Title:
Controlled lighting methods and apparatus
Document Type and Number:
Kind Code:
A1

Abstract:
Described herein are lighting units of a variety of types and configurations, including linear lighting units suitable for lighting large spaces, such as building exteriors and interiors. Also provided herein are methods and systems for powering lighting units, controlling lighting units, authoring displays for lighting units, and addressing control data for lighting units.
Representative Image:
Inventors:
Morgan, Frederick M. (Quincy, MA, US)
Dowling, Kevin J. (Westford, MA, US)
Lys, Ihor A. (Milton, MA, US)
Roberge, Brian (West Roxbury, MA, US)
Chemel, Brian (Salem, MA, US)
Hyer, Jeff (Newburyport, MA, US)
Blackwell, Michael K. (Milton, MA, US)
Warwick, John (Cambridge, MA, US)
Application Number:
10/360594
Publication Date:
08/19/2004
Filing Date:
02/06/2003
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Assignee:
Color Kinetics, Inc. (Boston, MA)
Primary Class:
International Classes:
(IPC1-7): H05B037/00
Attorney, Agent or Firm:
Wolf, Greenfield & Sacks, P.C.,Joseph Teja, Jr. (Federal Reserve Plaza, Boston, MA, 02210, US)
Claims:
1. A method of providing a lighting system, comprising: providing a substantially linear circuit board; disposing a plurality of light sources along the circuit board; disposing the circuit board and the light sources in a substantially linear housing; providing a light-transmissive cover for the housing; and providing a connection facility of the housing that allows a first unit of the lighting system to connect end to end with a second unit of the lighting system without a gap between the housings.

2. A method of claim 1, wherein the light sources are LEDs.

3. A method of claim 1, wherein the processor and the LEDs are on the same circuit board.

4. A method of claim 1, wherein the connection facility is a hole that allows cables to exit the housing at a location other than the end of the housing.

5. A method of claim 1, wherein the processor is an application specific integrated circuit (ASIC).

6. A method of claim 5, wherein the ASIC is configured to receive and transmit a data stream.

7. A method of claim 6, wherein the ASIC responds to data addressed to it, modifies at least one bit of the data stream, and transmits the modified data stream.

8. A method of claim 1, further comprising disposing a plurality of lighting systems in a serial configuration and controlling all of them by a stream of data to respective ASICs of each of them, wherein each lighting system responds to the first unmodified bit of data in the stream, modifies that bit of data, and transmits the stream to the next ASIC.

9. A method of claim 1, wherein the housing is configured to resemble at least one of a fluorescent light and a neon light.

10. A method of claim 1 wherein the housing is curved.

11. A method of claim 1, wherein the housing is configured in a bent configuration.

12. A method of claim 1, wherein the housing is configured in a branched configuration.

13. A method of claim 1, wherein the housing is configured in a T configuration.

14. A method of claim 1, further comprising providing a communication facility of the lighting system, wherein the lighting system responds to data from a source exterior to the lighting system.

15. A method of claim 14, wherein the data is from a signal source exterior to the lighting system.

16. A method of claim 15, wherein the signal source is a wireless signal source.

17. A method of claim 15, wherein the signal source includes a sensor for sensing an environmental condition, and the control of the lighting system is in response to the environmental condition.

18. A method of claim 15, wherein the signal source generates a signal based on a scripted lighting program for the lighting system.

19. A method of claim 1, wherein the control of the lighting system is based on assignment of lighting system units as objects in an object-oriented computer program.

20. A method of claim 19, wherein the computer program is an authoring system.

21. A method of claim 20, wherein the authoring system relates attributes in a virtual system to real world attributes of lighting systems.

22. A method of claim 21, wherein the real world attributes include positions of lighting units of the lighting system.

23. A method of claim 20, wherein the computer program is a computer game.

24. A method of claim 20, wherein the computer program is a music program.

25. A method of claim 1, wherein the lighting system includes a power supply.

26. A method of claim 25, wherein the power supply is a power-factor-controlled power supply.

27. A method of claim 25, wherein the power supply is a two-stage power supply.

28. A method of claim 27, wherein power factor correction includes an energy storage capacitor and a DC-DC converter.

29. A method of claim 28, wherein the power factor correction and energy storage capacitor are separated from the DC-DC converter by a high voltage bus.

30. A method of claim 1, further comprising disposing at least one such lighting unit on a building.

31. A method of claim 30, wherein the lighting units are disposed in an array on a building.

32. A method of claim 31, wherein the array is configured to facilitate displaying at least one of a number, a word, a letter, a logo, a brand, and a symbol.

33. A method of claim 31, wherein the array is configured to display a light show with time-based effects.

34. A method of claim 1, further comprising disposing a lighting unit on at least one of a vehicle, an automobile, a boat, a mast, a sail, an airplane, a wing, a fountain, and a waterfall.

35. A method of claim 1, further comprising disposing a lighting unit on at least one of a deck, a stairway, a door, a window, a roofline, a gazebo, a jungle gym, a swing set, a slide, a tree house, a club house, a garage, a shed, a pool, a spa, furniture, an umbrella, a counter, a cabinet, a pond, a walkway, a tree, a fence, a light pole, and a statue.

36. A method of claim 1, wherein the lighting unit is configured to be recessed in an alcove.

37. A lighting system, comprising: a substantially linear circuit board; a plurality of light sources along the circuit board, wherein the circuit board and the light sources are disposed in a substantially linear housing; a light-transmissive cover for the housing; and a connection facility of the housing that allows a first unit of the lighting system to connect end to end with a second unit of the lighting system without a gap between the housings.

38. A system of claim 37, wherein the light sources are LEDs.

39. A system of claim 37, wherein the processor and the LEDs are on the same circuit board.

40. A system of claim 37, wherein the connection facility is a hole that allows cables to exit the housing at a location other than the end of the housing.

41. A system of claim 37, wherein the processor is an application specific integrated circuit (ASIC).

42. A system of claim 41, wherein the ASIC is configured to receive and transmit a data stream.

43. A system of claim 41, wherein the ASIC responds to data addressed to it, modifies at least one bit of the data stream, and transmits the modified data stream.

44. A system of claim 37, further comprising a plurality of lighting systems in a serial configuration that are controlled by a stream of data to respective ASICs of each of them, wherein each lighting system responds to the first unmodified bit of data in the stream, modifies that bit of data, and transmits the stream to the next ASIC.

45. A system of claim 37, wherein the housing is configured to resemble a fluorescent light.

46. A system of claim 37, wherein the housing is curved.

47. A system of claim 37, wherein the housing is configured in a bent configuration.

48. A system of claim 37, wherein the housing is configured in a branched configuration.

49. A system of claim 37, wherein the housing is configured in a T configuration.

50. A system of claim 37, further comprising a communication facility of the lighting system, wherein the lighting system responds to data from a source exterior to the lighting system.

51. A system of claim 50, wherein the data is from a signal source exterior to the lighting system.

52. A system of claim 51, wherein the signal source is a wireless signal source.

53. A system of claim 51, wherein the signal source includes a sensor for sensing an environmental condition, and the control of the lighting system is in response to the environmental condition.

54. A system of claim 51, wherein the signal source generates a signal based on a scripted lighting program for the lighting system.

55. A system of claim 37, wherein the control of the lighting system is based on assignment of lighting system units as objects in an object-oriented computer program.

56. A system of claim 55, wherein the computer program is an authoring system.

57. A system of claim 56, wherein the authoring system relates attributes in a virtual system to real world attributes of lighting systems.

58. A system of claim 57, wherein the real world attributes include positions of lighting units of the lighting system.

59. A system of claim 55, wherein the computer program is a computer game.

60. A system of claim 55, wherein the computer program is a music program.

61. A system of claim 37, wherein the lighting system includes a power supply.

62. A system of claim 61, wherein the power supply is a power-factor-controlled power supply.

63. A system of claim 61, wherein the power supply is a two-stage power supply.

64. A system of claim 61, wherein power factor correction includes an energy storage capacitor and a DC-DC converter

65. A system of claim 61, wherein the power factor correction and energy storage capacitor are separated from the DC-DC converter by a bus.

66. A system of claim 37, further comprising at least one such lighting unit on a building.

67. A system of claim 66, wherein the lighting units are disposed in an array on a building.

68. A system of claim 66, wherein the array is configured to facilitate displaying at least one of a number, a word, a letter, a logo, a brand, and a symbol.

69. A system of claim 67, wherein the array is configured to display a light show with time-based effects.

70. A system of claim 37, further comprising a lighting unit on at least one of a vehicle, an automobile, a boat, a mast, a sail, an airplane, a wing, a fountain, and a waterfall.

71. A system of claim 37, further comprising a lighting unit on at least one of a deck, a stairway, a door, a window, a roofline, a gazebo, a jungle gym, a swing set, a slide, a tree house, a club house, a garage, a shed, a pool, a spa, furniture, an umbrella, a counter, a cabinet, a pond, a walkway, a tree, a fence, a light pole, and a statue.

72. A system of claim 37, wherein the lighting unit is configured to be recessed in an alcove.

73. A lighting system, comprising: a linear platform, the platform comprising a circuit board, wherein the circuit board comprises at least one circuit; an illumination source, wherein the illumination source is associated with the platform, wherein the illumination source comprises a row of LEDs; and a conductor, including at least one power conductor and at least one data conductor.

74. A lighting system of claim 73, wherein the LEDs include mullti-colored LEDs.

75. A lighting system of claim 73, wherein the illumination source is mounted on the circuit board.

76. A lighting system of claim 73, wherein the illumination source is associated with the at least one circuit.

77. A lighting system of claim 73, wherein the conductor is at least one of a wire, a bus, a conductor, and a plurality of conductors, wherein the plurality of conductors comprise at least one data conductor and at least one power conductor.

78. A lighting system of claim 73, wherein the conductor is electrically associated with the through an insulation displacement system.

79. A plurality of lighting systems according to claim 73, wherein the plurality of lighting systems are electrically associated.

80. A lighting system of claim 79, wherein the electrical association comprises at least one conductor, wherein the conductor is associated with each of the plurality of lighting systems through an insulation displacement system.

81. A lighting system of claim 73, wherein the plurality of lighting systems is associated with an optic.

82. A lighting system of claim 81, wherein the association with the optic comprises an optical association.

83. A lighting system of claim 81, wherein the association with the optic comprises a mechanical association.

84. A lighting system of claim 81, wherein the optic comprises an extruded material.

85. A lighting system of claim 84, wherein the material comprises polycarbonate.

86. A lighting system of claim 85, wherein the polycarbonate is translucent.

87. A lighting system of claim 81, wherein the optic further comprises a guide feature and the platform is mechanically associated with the guide feature.

88. A lighting system of claim 87, wherein the guide feature is on an interior surface of the optic; wherein the plurality of lighting systems are mechanically associated with the guide feature.

89. A lighting system comprising: an LED illumination system; and an extruded optic, wherein the optic comprises platform guides for holding a platform containing light sources.

90. A lighting system of claim 89, wherein the optic is at least one of an extruded optic, a polycarbonate optic, a double lobe optic, an upper and lower lobe, a translucent optic, and a transparent optic.

91. A lighting system of claim 89, wherein the illumination system includes at least one of an LED, an LED color controllable system, two LEDs, two rows of LEDs, two rows of multicolored LEDs, and LEDs associated with a platform.

92. A lighting system of claim 89, further comprising an addressable controller for the lighting system.

93. A lighting system of claim 89, wherein the LED illumination system is optically associated with the optic.

94. A lighting system of claim 89, wherein a plurality of LED illumination systems are associated with the optic.

95. A lighting system of claim 94, wherein the plurality of LED illumination systems are independently controlled.

96. A lighting system of claim 94, wherein the plurality of LED illumination systems are multi-colored illumination systems.

97. A lighting system of claim 94, wherein the optical association provides substantially uniform illumination of at least a portion of the optic.

98. A lighting system of claim 97, wherein the portion is at least a portion of the upper lobe.

99. A lighting system of claim 97, wherein the at least a portion of the optic is the upper lobe.

100. A lighting system of claim 89, wherein the LED illumination system projects a substantial portion of light within a beam angle.

101. A lighting system of claim 100, wherein the beam angle is formed by the light emitted by the two rows of LEDs.

102. A lighting system of claim 100, wherein the beam angle is aligned to project light onto the interior surface of the optic.

103. A lighting system of claim 102, wherein the alignment is optimized to generate substantially uniform illumination of the upper lobe of the optic.

104. A lighting system of claim 89, further comprising a ridged member.

105. A lighting system of claim 104, wherein the ridged member comprises at least one of a metal, a plastic, and a ceramic.

106. A lighting system of claim 104, wherein the ridged member is mechanically associated with the optic.

107. A lighting system of claim 106, wherein the ridged member is associated with the lower lobe to provide rigidity to the lighting system.

108. A lighting system of claim 104, wherein the ridged member is adapted to couple to an attachment device.

109. A lighting system of claim 108, wherein the attachment device is adapted to attach the lighting system to another system.

110. A lighting system of claim 109, wherein the other system comprises at least one of a wall, a building, and an exterior of the building.

111. A lighting system of claim 89, wherein the lighting system comprises at least one end cap.

112. A lighting system of claim 111, wherein the lighting system comprises a first end cap associated with a first end of the optic and a second end cap associated with the second end of the optic.

113. A lighting system of claim 112, wherein the first and second end caps are hermetically sealed to the optic to form a water resistant lighting assembly.

114. A lighting system of claim 113, wherein the end cap comprises platform guides on an interior surface, and the platform is associated with the platform guides.

115. A lighting system of claim 113, wherein at least one of the first and second end caps comprises a gas exchange port.

116. A lighting system of claim 113, wherein at least one of the first and second end caps further comprises an expansion facility.

117. A lighting system of claim 116, wherein the expansion facility is adapted to capture the ridged member and allow for expansion differences between the ridged member and at least one of the optic and the end cap.

118. A lighting system of claim 111, wherein the end cap is comprises a cable sealing portion.

119. A lighting system of claim 118, wherein the cable sealing portion is adapted to pass wires to the interior of the lighting system.

120. A lighting system of claim 118, wherein the cable sealing portion is hermetically sealed.

121. A lighting system of claim 118, wherein the cable sealing system further comprises a wire strain relief system.

122. A lighting system of claim 111, wherein the end cap comprises at least one of a transparent material, a polycarbonate material, and a translucent material.

123. A lighting system of claim 111, wherein the end cap comprises substantially the same material as the optic.

124. A lighting system of claim 90, wherein the lighting system is adapted to provide substantially uniform illumination of the upper lobe and at least an upper portion of the end caps such that a second lighting system can be aligned with the lighting system to form a substantially uniform interconnection of illumination.

125. A method of providing a self-healing lighting system, comprising: providing a plurality of lighting units in a system, each having a plurality of light sources; providing at least one processor associated with at least some of the lighting units for controlling the lighting units; providing a network facility for addressing data to each of the lighting units; providing a diagnostic facility for identifying a problem with a lighting unit; providing a healing facility for modifying the actions of at least one processor to automatically correct the problem identified by the diagnostic facility.

126. A method of powering a lighting unit, comprising: providing a two-stage power-factor-controlled power supply for the lighting unit; providing an energy storage capacitor; providing a DC-DC converter; and separating the energy storage capacitor and the DC-DC converter by a high voltage bus.

127. A method of claim 126, further comprising: locating at least a portion of the power supply on board the lighting unit.

Description:

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] This patent application claims the benefit under 35 U.S.C. §119(e) of the following U.S. Provisional Applications:

[0002] Serial No. 60/354,692, filed Feb. 6, 2002, entitled “LED Based Lighting Systems”;

[0003] Serial No. 60/401,964, filed Aug. 8, 2002, entitled “LED Based Lighting Systems”;

[0004] Serial No. 60/401,965, filed Aug. 8, 2002, entitled “Methods and Apparatus for Controlling Addressable Systems;” and

[0005] Serial No. 60/415,897, filed Oct. 3, 2002, entitled “Methods and Apparatus for Illuminating Environments”.

[0006] This application also claims the benefit under 35 U.S.C. §120 as a continuation-in-part (CIP) of the following U.S. Non-provisional applications:

[0007] Ser. No. 09/870,193, filed May 30, 2001, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;”

[0008] Ser. No. 10/045,604, filed Oct. 23, 2001, entitled “Systems and Methods for Digital Entertainment;”

[0009] Ser. No. 10/158,579, filed May 30, 2002, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;”

[0010] Ser. No. 10/163,164, filed Jun. 5, 2002, entitled “Systems and Method of Generating Control Signals;” and

[0011] Ser. No. 10/325,635, filed Dec. 19, 2002, entitled “Controlled Lighting Methods and Apparatus.”

[0012] Each of the foregoing applications is hereby incorporated herein by reference.

FIELD OF THE INVENTION

[0013] This invention relates to the field of lighting, and more particularly to the field of processor-controlled lighting.

BACKGROUND

[0014] With the advent of digital lighting technologies, it is becoming increasingly popular to create lighting networks of light-emitting diode (LED) based lighting devices, as described in U.S. Pat. Nos. 6,016,038, 6,150,774 and 6,166,496, each of which are incorporated herein by reference. Fantastic lighting effects can be created with these systems and the lighting effects can be coordinated through a network to make, for example, a rainbow chase down a hallway or corridor. These lighting systems are generally controlled through a network, although there are many non-networked applications, wherein a data stream containing packets of information is communicated to the lighting devices. Each of the lighting devices may see all of the packets of information but only respond to packets that are addressed to the particular device. Once a properly addressed packet of information arrives, the lighting device may read and execute the commands. This arrangement demands that each of the lighting devices have an address and these addresses need to be unique with respect to the other lighting devices on the network. The addresses are normally set by setting switches on each of the lighting devices during installation. Settings switches tends to be time consuming and error prone.

[0015] Lighting systems for theatres, entertainment, retail and architectural venues such as casinos, theme parks, stores, malls, etcetera, require elaborate lighting instruments and, in addition, networks to control the lights. One of the designers' most onerous tasks comes after all the lights are in place: configuration. This involves going to each instrument or light fixture and determining and setting the network address of each unit through the use of switches or dials and then determining the setup and corresponding element on a lighting board or computer. Two people usually accomplish this and, depending on the distance, use walkie-talkies and enter into a lot of back and forth discussion during the process. With sufficient planning and coordination this address selection and setting can be done a priori but still requires substantial time and effort

[0016] This task can take many hours depending on the locations. For example, a new amusement park ride may use hundreds of lighting fixtures, each of which is controlled over a network and are neither line-of-sight to each other or to any single point. Each one must be identified and a correspondence made between the light and its setting on the lighting control board. Mix-ups and confusion are common during this process.

[0017] Currently, networked lighting devices have their addresses set through a series of physical switches such as dials, dipswitches or buttons. These devices have to be individually set to particular addresses and this process can be cumbersome. It would be useful to avoid this process or make the system more user friendly.

[0018] There are several other problems associated with these lighting systems. While many such lighting systems are used for indirect lighting, general illumination and the like, some such systems are used for direct view applications. That is, the viewer is directly viewing the light emitted from the lighting system (e.g. accent lighting on a building where the light is intended to outline the perimeter of the building.) Generally, these lighting systems have gaps in light emission towards the ends of the system and alignment of one lighting system next to another produces gaps where there is little or no light produced. There are many installations that require long lines of lighting systems placed in a row or other pattern in an attempt to produce a continuous light line. The gaps in light tend to detract from such applications.

[0019] Another problem associated with these systems is that when the LEDs are directly viewed they appear to be discrete light emitters until there is sufficient distance between the light and the viewer. Even when the viewer is relatively far away from the lighting system, the lighting system does not tend to produce very bright or brilliant lighting effects.

[0020] Another problem associated with these lighting systems is that the communication and power is fed through the ends of the housing and into junction boxes at the beginning and end of every light. The three lines, power ground, data, are run through each end and then passed through the length of the fixture. Each lighting element in the housing would tap into the three lines for power and data. Mounting of the lights is very expensive because it is done through junction boxes. Every light required two junction boxes to be mounted on the wall or other mounting surface and wires and conduit needs to be run between boxes to allow two lighting units to be connected together.

SUMMARY

[0021] One embodiment of the invention is directed to a device that is configured to set the address of an illumination device. For example, many lighting installations have hundreds of LED based lighting devices and these lighting devices may be connected through a network. Lighting control information may be sent over the network and each of the lighting devices may be waiting for addressed instructions. The data may be in the form of a data stream where lighting control information is communicated to all of the lighting devices. The data stream may be broken up into packets where each packet includes an address. Another example of data format is when the position of the data within the data stream indicates its address (e.g. DMX protocol). When a lighting device receives a data packet that is addressed to it the lighting device may read and execute the instructions. This technique is taught in U.S. Pat. No. 6,016,038. Rather than setting dip switches on every lighting device it would be much easier and faster to attach a lighting device to a programming device according to the principles of the invention and load an address into the lighting device. This may take the form of generating an address and then sending the address to the lighting device.

[0022] A method of setting the address of a lighting system according to the principles of the invention may include plugging the programming device into the lighting system. The programming device may also power the lighting system. Upon attachment of the programming device the lighting device may power up. A knob on the user interface of the programming device may be rotated to select a program, program parameter, or address mode. After the program has been selected, a parameter may then be selected and set. After the address mode has been selected, an address may be selected and set. The programming device may also automatically increment the address to provide quick setting of many lighting systems in an installation.

[0023] The lighting device can also be programmed to log the activities such as address setting, program selection, parameter setting or other settings. This may be useful in retrieving information at a later time. For example, many lighting devices have a unique identifier (e.g. a serial number) and this serial number could be retrieved along with the address settings and changes to the address setting. This information may be retrievable from a central computer operating the lighting network for example. This information could be used to locate the particular lighting device on the network by the serial number. This may be useful in the event the lighting device has to be changed for example. When the lighting device is removed from the network, the central controller, or master controller, may be monitoring the network and realize the lighting device has been removed. When the next lighting device is attached to the system, at a similar location with respect to other lighting devices, the central system or master device may automatically set the address. Other information may also be retrieved from the lighting device such as date of manufacture, calibration information, color settings or other information. The lighting network may also use this information. For example, a network may retrieve information from a lighting device; subsequently the lighting device may malfunction and be replaced. The new lighting device may be of a newer version and as a result it may be much brighter than the original device. The network system could compare the information gathered from the original lighting device and compare it to the information gathered from the replacement device and then adjust the replacement device accordingly.

[0024] Another embodiment relates to lighting methods and systems that include providing a substantially linear circuit board, disposing a plurality of light sources along the circuit board, disposing the circuit board and the light sources in a substantially linear housing, providing a light-transmissive cover for the housing and providing a connection facility of the housing that allows a first unit of the lighting system to connect end to end with a second unit of the lighting system without a gap between the housings. In embodiments the light sources are LEDs. In embodiments the processor and the LEDs are on the same circuit board. In embodiments the connection facility is a hole that allows cables to exit the housing at a location other than the end of the housing. In embodiments the processor is an application specific integrated circuit (ASIC). In embodiments the ASIC is configured to receive and transmit a data stream. In embodiments the ASIC responds to data addressed to it, modifies at least one bit of the data stream, and transmits the modified data stream.

[0025] The methods and systems disclosed herein may further comprise disposing a plurality of lighting systems in a serial configuration and controlling all of them by a stream of data to respective ASICs of each of them, wherein each lighting system responds to the first unmodified bit of data in the stream, modifies that bit of data, and transmits the stream to the next ASIC.

[0026] In embodiments the lighting system may have a housing configured to resemble a fluorescent light. The housing may be linear, curved, bent, branched, or in a “T” or “V” shape, among other shapes.

[0027] The methods and systems may further include providing a communication facility of the lighting system, wherein the lighting system responds to data from a source exterior to the lighting system. The data may come from a signal source exterior to the lighting system. The signal source may be a wireless signal source. In embodiments the signal source includes a sensor for sensing an environmental condition, and the control of the lighting system is in response to the environmental condition. In embodiments the signal source generates a signal based on a scripted lighting program for the lighting system.

[0028] In embodiments the control of the lighting system is based on assignment of lighting system units as objects in an object-oriented computer program. In embodiments the computer program is an authoring system. In embodiments the authoring system relates attributes in a virtual system to real world attributes of lighting systems. In embodiments the real world attributes include positions of lighting units of the lighting system. In embodiments the computer program is a computer game. In other embodiments the computer program is a music program.

[0029] In embodiments of the methods and systems provided herein, the lighting system includes a power supply. In embodiments the power supply is a power-factor-controlled power supply. In embodiments the power supply is a two-stage power supply. In embodiments the power factor correction includes an energy storage capacitor and a DC-DC converter. In embodiments the PFC and energy storage capacitor are separated from the DC-DC converter by a bus.

[0030] In embodiments of the methods and systems provided herein, the lighting systems further include disposing at least one such lighting unit on a building. In embodiments the lighting units are disposed in an array on a building. In embodiments the array is configured to facilitate displaying at least one of a number, a word, a letter, a logo, a brand, and a symbol. In embodiments the array is configured to display a light show with time-based effects.

[0031] In embodiments of the methods and systems provided herein, the lighting systems can be disposed on a vehicle, an automobile, a boat, a mast, a sail, an airplane, a wing, a fountain, a waterfall or similar item. In other embodiments, lighting units can be disposed on a deck, a stairway, a door, a window, a roofline, a gazebo, a jungle gym, a swing set, a slide, a tree house, a club house, a garage, a shed, a pool, a spa, furniture, an umbrella, a counter, a cabinet, a pond, a walkway, a tree, a fence, a light pole, a statue or other object.

[0032] In embodiments the lighting units described herein are configured to be recessed into an alcove or similar facility.

[0033] Methods and systems disclosed herein include lighting systems that include a platform, circuit board wherein the circuit board comprises at least one circuit; an illumination source, LED, plurality of LEDs; multi-colored LEDs, wherein the illumination source is associated with the platform, wherein the illumination source is mounted on the circuit board; wherein the illumination source is associated with the at least one circuit, wire, bus, conductor, or plurality of conductors, wherein the foregoing comprises at least one data conductor and at least one power conductor, wherein the wire is electrically associated with the circuit through an insulation displacement system.

[0034] Methods and systems disclosed herein include a plurality of lighting systems wherein the plurality of lighting systems are electrically associated; wherein the electrical association comprises at least one conductor wherein the conductor is associated with each of the plurality of lighting systems through an insulation displacement system.

[0035] In embodiments the plurality of lighting systems is associated with an optic; wherein the association with the optic comprises an optical association; wherein the association with the optic comprises a mechanical association.

[0036] In embodiments the optic comprises an extruded material; wherein the material comprises polycarbonate; wherein the polycarbonate is translucent; wherein the optic further comprises a guide feature and the platform is mechanically associated with the guide feature; wherein the guide feature is on an interior surface of the optic; and wherein the plurality of lighting systems are mechanically associated with the guide feature

[0037] Methods and systems disclosed herein include a lighting system that includes one or more of various configurations of LEDs, including an LED, an LED color controllable system, two LEDs, two rows of LEDs, two rows of multicolored LEDs, or LEDs associated with a platform; an addressable controller; an optic, such as an extruded optic, polycarbonate optic, double lobe optic, upper and lower lobe, translucent, transparent, wherein the optic comprises platform guides.

[0038] In embodiments the LED illumination system is optically associated with the optic, wherein a plurality of LED illumination systems are associated with the optic, wherein the plurality of LED illumination systems are independently controlled; wherein the plurality of LED illumination systems are multi-colored illumination systems. In embodiments the optical association provides substantially uniform illumination of at least a portion of the optic, wherein the portion is at least a portion of the upper lobe, wherein the at least a portion of the optic is the upper lobe, wherein the LED illumination system projects a substantial portion of light within a beam angle, wherein the beam angle is formed by the light emitted by the two rows of LEDs, wherein the beam angle is aligned to project light onto the interior surface of the optic, wherein the alignment is optimized to generate substantially uniform illumination of the upper lobe of the optic.

[0039] Other embodiments include a ridged member, wherein the ridged member comprises metal, plastic, or ceramic. In embodiments the ridged member is mechanically associated with the optic and associated with the lower lobe to provide rigidity to the lighting system. In embodiments the ridged member is adapted to couple to an attachment device wherein the attachment device is adapted to attach the lighting system to another system, wherein the other system comprises a wall, building, exterior of building. In embodiments the methods and systems include at least one end cap, a first end cap associated with a first end of the optic and a second end cap associated with the second end of the optic, wherein the first and second end caps are hermetically sealed to the optic to form a water resistant lighting assembly. In embodiments the end cap comprises platform guides on an interior surface, and the platform is associated with the platform guides, wherein at least one of the first and second end caps comprises a gas exchange port (add a method of exchanging gas from the interior of the lighting system to provide a substantially dry atmosphere in the lighting system). In embodiments at least one of the first and second end caps further comprises an expansion facility, wherein the expansion facility is adapted to capture the ridged member and allow for expansion differences between the ridged member and at least one of the optic and the end cap. In embodiments the end cap comprises a cable sealing portion wherein the cable sealing portion is adapted to pass wires to the interior of the lighting system, wherein the cable sealing portion is hermetically sealed and wherein the cable sealing system further comprises a wire strain relief system. In embodiments the end caps comprise transparent material, translucent material, substantially the same material as the optic, or polycarbonate material, and the lighting system is adapted to provide substantially uniform illumination of the upper lobe and at least an upper portion of the end caps such that a second lighting system can be aligned with the lighting system to form a substantially uniform interconnection of illumination.

[0040] Methods and system provided herein also include providing a self-healing lighting system, which may include providing a plurality of lighting units in a system, each having a plurality of light sources; providing at least one processor associated with at least some of the lighting units for controlling the lighting units; providing a network facility for addressing data to each of the lighting units; providing a diagnostic facility for identifying a problem with a lighting unit; and providing a healing facility for modifying the actions of at least one processor to automatically correct the problem identified by the diagnostic facility.

[0041] As used herein for purposes of the present disclosure, the term “LED” should be understood to include any light emitting diode or other type of carrier injection/junction-based system that is capable of generating radiation in response to an electric signal. Thus, the term LED includes, but is not limited to, various semiconductor-based structures that emit light in response to current, light emitting polymers, light-emitting strips, electro-luminescent strips, and the like.

[0042] In particular, the term LED refers to light emitting diodes of all types (including semi-conductor and organic light emitting diodes) that may be configured to generate radiation in one or more of the infrared spectrum, ultraviolet spectrum, and various portions of the visible spectrum (generally including radiation wavelengths from approximately 400 nanometers to approximately 700 nanometers). Some examples of LEDs include, but are not limited to, various types of infrared LEDs, ultraviolet LEDs, red LEDs, blue LEDs, green LEDs, yellow LEDs, amber LEDs, orange LEDs, and white LEDs (discussed further below). It also should be appreciated that LEDs may be configured to generate radiation having various bandwidths for a given spectrum (e.g., narrow bandwidth, broad bandwidth).

[0043] It should be noted that LED(s) in systems according to the present invention might be any color including white, ultraviolet, infrared or other colors within the electromagnetic spectrum. As used herein, the term “LED” should be further understood to include, without limitation, light emitting diodes of all types, light emitting polymers, semiconductor dies that produce light in response to current, organic LEDs, electro-luminescent strips, and other such systems. In an embodiment, an “LED” may refer to a single light emitting diode having multiple semiconductor dies that are individually controlled. It should also be understood that the term “LED” does not restrict the package type of the LED. The term “LED” includes packaged LEDs, non-packaged LEDs, surface mount LEDs, chip on board LEDs and LEDs of all other configurations. The term “LED” also includes LEDs packaged or associated with material (e.g. a phosphor) wherein the material may convert energy from the LED to a different wavelength.

[0044] For example, one implementation of an LED configured to generate essentially white light (e.g., a white LED) may include a number of dies which respectively emit different spectrums of luminescence that, in combination, mix to form essentially white light. In another implementation, a white light LED may be associated with a phosphor material that converts luminescence having a first spectrum to a different second spectrum. In one example of this implementation, luminescence having a relatively short wavelength and narrow bandwidth spectrum “pumps” the phosphor material, which in turn radiates longer wavelength radiation having a somewhat broader spectrum.

[0045] It should also be understood that the term LED does not limit the physical and/or electrical package type of an LED. For example, as discussed above, an LED may refer to a single light emitting device having multiple dies that are configured to respectively emit different spectrums of radiation (e.g., that may or may not be individually controllable). Also, an LED may be associated with a phosphor that is considered as an integral part of the LED (e.g., some types of white LEDs). In general, the term LED may refer to packaged LEDs, non-packaged LEDs, surface mount LEDs, chip-on-board LEDs, radial package LEDs, power package LEDs, LEDs including some type of encasement and/or optical element (e.g., a diffusing lens), etc.

[0046] The term “light source” should be understood to refer to any one or more of a variety of radiation sources, including, but not limited to, LED-based sources as defined above, incandescent sources (e.g., filament lamps, halogen lamps), fluorescent sources, phosphorescent sources, high-intensity discharge sources (e.g., sodium vapor, mercury vapor, and metal halide lamps), lasers, other types of luminescent sources, electro-lumiscent sources, pyro-luminescent sources (e.g., flames), candle-luminescent sources (e.g., gas mantles, carbon arc radiation sources), photo-luminescent sources (e.g., gaseous discharge sources), cathode luminescent sources using electronic satiation, galvano-luminescent sources, crystallo-luminescent sources, kine-luminescent sources, thermo-luminescent sources, triboluminescent sources, sonoluminescent sources, radioluminescent sources, and luminescent polymers.

[0047] A given light source may be configured to generate electromagnetic radiation within the visible spectrum, outside the visible spectrum, or a combination of both. Hence, the terms “light” and “radiation” are used interchangeably herein. Additionally, a light source may include as an integral component one or more filters (e.g., color filters), lenses, or other optical components. Also, it should be understood that light sources may be configured for a variety of applications, including, but not limited to, indication and/or illumination. An “illumination source” is a light source that is particularly configured to generate radiation having a sufficient intensity to effectively illuminate an interior or exterior space.

[0048] An LED system is one type of illumination source. As used herein “illumination source” should be understood to include all illumination sources, including LED systems, as well as incandescent sources, including filament lamps, pyro-luminescent sources, such as flames, candle-luminescent sources, such as gas mantles and carbon arch radiation sources, as well as photo-luminescent sources, including gaseous discharges, fluorescent sources, phosphorescence sources, lasers, electro-luminescent sources, such as electro-luminescent lamps, light emitting diodes, and cathode luminescent sources using electronic satiation, as well as miscellaneous luminescent sources including galvano-luminescent sources, crystallo-luminescent sources, kine-luminescent sources, thermo-luminescent sources, triboluminescent sources, sonoluminescent sources, and radioluminescent sources. Illumination sources may also include luminescent polymers capable of producing primary colors.

[0049] The term “illuminate” should be understood to refer to the production of a frequency of radiation by an illumination source. The term “color” should be understood to refer to any frequency of radiation within a spectrum; that is, a “color,” as used herein, should be understood to encompass frequencies not only of the visible spectrum, but also frequencies in the infrared and ultraviolet areas of the spectrum, and in other areas of the electromagnetic spectrum.

[0050] The term “spectrum” should be understood to refer to any one or more frequencies (or wavelengths) of radiation produced by one or more light sources. Accordingly, the term “spectrum” refers to frequencies (or wavelengths) not only in the visible range, but also frequencies (or wavelengths) in the infrared, ultraviolet, and other areas of the overall electromagnetic spectrum. Also, a given spectrum may have a relatively narrow bandwidth (essentially few frequency or wavelength components) or a relatively wide bandwidth (several frequency or wavelength components having various relative strengths). It should also be appreciated that a given spectrum may be the result of a mixing of two or more other spectrums (e.g., mixing radiation respectively emitted from multiple light sources).

[0051] For purposes of this disclosure, the term “color” is used interchangeably with the term “spectrum.” However, the term “color” generally is used to refer primarily to a property of radiation that is perceivable by an observer (although this usage is not intended to limit the scope of this term). Accordingly, the terms “different colors” implicitly refer to different spectrums having different wavelength components and/or bandwidths. It also should be appreciated that the term “color” may be used in connection with both white and non-white light.

[0052] The term “color temperature” generally is used herein in connection with white light, although this usage is not intended to limit the scope of this term. Color temperature essentially refers to a particular color content or shade (e.g., reddish, bluish) of white light. The color temperature of a given radiation sample conventionally is characterized according to the temperature in degrees Kelvin (K) of a black body radiator that radiates essentially the same spectrum as the radiation sample in question. The color temperature of white light generally falls within a range of from approximately 700 degrees K (generally considered the first visible to the human eye) to over 10,000 degrees K.

[0053] Lower color temperatures generally indicate white light having a more significant red component or a “warmer feel,” while higher color temperatures generally indicate white light having a more significant blue component or a “cooler feel.” By way of example, a wood burning fire has a color temperature of approximately 1,800 degrees K, a conventional incandescent bulb has a color temperature of approximately 2848 degrees K, early morning daylight has a color temperature of approximately 3,000 degrees K, and overcast midday skies have a color temperature of approximately 10,000 degrees K. A color image viewed under white light having a color temperature of approximately 3,000 degree K has a relatively reddish tone, whereas the same color image viewed under white light having a color temperature of approximately 10,000 degrees K has a relatively bluish tone.

[0054] The terms “lighting unit” and “lighting fixture” are used interchangeably herein to refer to an apparatus including one or more light sources of same or different types. A given lighting unit may have any one of a variety of mounting arrangements for the light source(s), enclosure/housing arrangements and shapes, and/or electrical and mechanical connection configurations. Additionally, a given lighting unit optionally may be associated with (e.g., include, be coupled to and/or packaged together with) various other components (e.g., control circuitry) relating to the operation of the light source(s). An “LED-based lighting unit” refers to a lighting unit that includes one or more LED-based light sources as discussed above, alone or in combination with other non LED-based light sources.

[0055] The terms “processor” or “controller” are used herein interchangeably to describe various apparatus relating to the operation of one or more light sources. A processor or controller can be implemented in numerous ways, such as with dedicated hardware, using one or more microprocessors that are programmed using software (e.g., microcode or firmware) to perform the various functions discussed herein, or as a combination of dedicated hardware to perform some functions and programmed microprocessors and associated circuitry to perform other functions.

[0056] In various implementations, a processor or controller may be associated with one or more storage media (generically referred to herein as “memory,” e.g., volatile and non-volatile computer memory such as RAM, PROM, EPROM, and EEPROM, floppy disks, compact disks, optical disks, magnetic tape, etc.). In some implementations, the storage media may be encoded with one or more programs that, when executed on one or more processors and/or controllers, perform at least some of the functions discussed herein. Various storage media may be fixed within a processor or controller or may be transportable, such that the one or more programs stored thereon can be loaded into a processor or controller so as to implement various aspects of the present invention discussed herein. The terms “program” or “computer program” are used herein in a generic sense to refer to any type of computer code (e.g., software or microcode) that can be employed to program one or more processors or controllers, including by retrieval of stored sequences of instructions.

[0057] The term “addressable” is used herein to refer to a device (e.g., a light source in general, a lighting unit or fixture, a controller or processor associated with one or more light sources or lighting units, other non-lighting related devices, etc.) that is configured to receive information (e.g., data) intended for multiple devices, including itself, and to selectively respond to particular information intended for it. The term “addressable” often is used in connection with a networked environment (or a “network,” discussed further below), in which multiple devices are coupled together via some communications medium or media.

[0058] In one implementation, one or more devices coupled to a network may serve as a controller for one or more other devices coupled to the network (e.g., in a master/slave relationship). In another implementation, a networked environment may include one or more dedicated controllers that are configured to control one or more of the devices coupled to the network. Generally, multiple devices coupled to the network each may have access to data that is present on the communications medium or media; however, a given device may be “addressable” in that it is configured to selectively exchange data with (i.e., receive data from and/or transmit data to) the network, based, for example, on one or more particular identifiers (e.g., “addresses”) assigned to it.

[0059] The term “network” as used herein refers to any interconnection of two or more devices (including controllers or processors) that facilitates the transport of information (e.g. for device control, data storage, data exchange, etc.) between any two or more devices and/or among multiple devices coupled to the network. As should be readily appreciated, various implementations of networks suitable for interconnecting multiple devices may include any of a variety of network topologies and employ any of a variety of communication protocols. Additionally, in various networks according to the present invention, any one connection between two devices may represent a dedicated connection between the two systems, or alternatively a non-dedicated connection. In addition to carrying information intended for the two devices, such a non-dedicated connection may carry information not necessarily intended for either of the two devices (e.g., an open network connection). Furthermore, it should be readily appreciated that various networks of devices as discussed herein may employ one or more wireless, wire/cable, and/or fiber optic links to facilitate information transport throughout the network.

[0060] The lighting systems described herein may also include a user interface used to change and or select the lighting effects displayed by the lighting system. The communication between the user interface and the processor may be accomplished through wired or wireless transmission. The term “user interface” as used herein refers to an interface between a human user or operator and one or more devices that enables communication between the user and the device(s). Examples of user interfaces that may be employed in various implementations of the present invention include, but are not limited to, switches, human-machine interfaces, operator interfaces, potentiometers, buttons, dials, sliders, a mouse, keyboard, keypad, various types of game controllers (e.g., joysticks), track balls, display screens, various types of graphical user interfaces (GUIs), touch screens, microphones and other types of sensors that may receive some form of human-generated stimulus and generate a signal in response thereto.

[0061] The following patents and patent applications are hereby incorporated herein by reference:

[0062] U.S. Pat. No. 6,016,038, issued Jan. 18, 2000, entitled “Multicolored LED Lighting Method and Apparatus;”

[0063] U.S. Pat. No. 6,211,626, issued Apr. 3, 2001 to Lys et al, entitled “Illumination Components;”

[0064] U.S. patent application Ser. No. 09/870,193, filed May 30, 2001, entitled “Methods and Apparatus for Controlling Devices in a Networked Lighting System;”

[0065] U.S. patent application Ser. No. 09/344,699, filed Jun. 25, 1999, entitled “Method for Software Driven Generation of Multiple Simultaneous High Speed Pulse Width Modulated Signals;”

[0066] U.S. patent application Ser. No. 09/805,368, filed Mar. 13, 2001, entitled “Light-Emitting Diode Based Products;”

[0067] U.S. patent application Ser. No. 09/663,969, filed Sep. 19, 2000, entitled “Universal Lighting Network Methods and Systems;”

[0068] U.S. patent application Ser. No. 09/716,819, filed Nov. 20, 2000, entitled “Systems and Methods for Generating and Modulating Illumination Conditions;”

[0069] U.S. patent application Ser. No. 09/675,419, filed Sep. 29, 2000, entitled “Systems and Methods for Calibrating Light Output by Light-Emitting Diodes;”

[0070] U.S. patent application Ser. No. 09/870,418, filed May 30, 2001, entitled “A Method and Apparatus for Authoring and Playing Back Lighting Sequences;” and

[0071] U.S. patent application Ser. No. 10/045,629, filed Oct. 25, 2001, entitled “Methods and Apparatus for Controlling Illumination.”

BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The foregoing and other objects and advantages of the invention will be appreciated more fully from the following further description thereof, with reference to the accompanying drawings, wherein:

[0073] FIG. 1 illustrates one example of a lighting unit that may serve as a device in a lighting environment according to one embodiment of the present invention.

[0074] FIG. 2 depicts a lighting system with a plurality of lighting units and a central controller.

[0075] FIG. 3 is a schematic diagram for a programming device for programming a lighting unit in accordance with the principles of the invention.

[0076] FIG. 4 depicts various configurations of lighting units in accordance with the invention.

[0077] FIG. 5 shows a configuration made of various lighting units.

[0078] FIG. 6 shows a pyramid configuration consisting of linear lighting units.

[0079] FIG. 7 shows a number of linear lighting units disposed in a two-dimensional array.

[0080] FIG. 8 shows the array of FIG. 7 with certain lighting units in the “on” position and others in an “off” position.

[0081] FIG. 9 shows a time-based effect taking place on a lighting configuration.

[0082] FIG. 10 illustrates an example of a general process flow diagram for determining lighting unit identifiers according to one embodiment of the present invention.

[0083] FIG. 11 illustrates a portion of a lighting unit controller including a power-sensing module according to one embodiment of the present invention.

[0084] FIG. 12 shows an example of a circuit implementation of a lighting unit controller including a power-sensing module according to one embodiment of the invention.

[0085] FIG. 13 illustrates a binary tree structure representing possible identifiers for multiple lighting units of the system of FIG. 2 , according to one embodiment of the present invention.

[0086] FIG. 14 illustrates a flow chart of an identifier determination/learning algorithm according to one embodiment of the present invention.

[0087] FIG. 15 illustrates a process flow diagram according to one embodiment of the present invention for determining lighting unit identifiers by observing an illumination state of the lighting units.

[0088] FIG. 16 illustrates a process flow diagram for determining/compiling mapping information based on physical locations of lighting units according to one embodiment of the present invention.

[0089] FIG. 17 illustrates an exemplary graphics user interface to facilitate system configuration according to one embodiment of the present invention.

[0090] FIG. 18 illustrates a process flow diagram for communicating with a lighting system according to one embodiment of the present invention.

[0091] FIG. 19 is a diagram showing a networked lighting system according to one embodiment of the invention.

[0092] FIG. 20 is a diagram showing an example of a controller in the lighting sytem of FIG. 19 , according to one embodiment of the invention.

[0093] FIG. 21 is a diagram showing a networked lighting system according to another embodiment of the invention.

[0094] FIG. 22 is a diagram illustrating one example of a data protocol that may be used in the networked lighting system of FIG. 21 , according to one embodiment of the invention.

[0095] FIG. 22A is a diagram illustrating a one-dimensional array of lighting units to demonstrate a “self-healing” concept.

[0096] FIG. 22B is a diagram illustrating a two-dimensional array of lighting units to demonstrate a “self-healing” concept.

[0097] FIG. 23 is a flow diagram that depicts a series of steps that can be used to locate positions of lights using a video camera.

[0098] FIG. 24 is a schematic diagram showing elements for generating a lighting control signal using a configuration facility and a graphical representation facility.

[0099] FIG. 25 is a schematic diagram showing elements for generating a lighting control signal from an animation facility and light management facility.

[0100] FIG. 26 illustrates a configuration file for data relating to light systems in an environment.

[0101] FIG. 27 illustrates a virtual representation of an environment using a computer screen.

[0102] FIG. 28 is a representation of an environment with light systems that project light onto portions of the environment.

[0103] FIG. 29 is a schematic diagram showing the propagation of an effect through a light system.

[0104] FIG. 30 is a flow diagram showing steps for using an image capture device to determine the positions of a plurality of light systems in an environment.

[0105] FIG. 31 is a flow diagram showing steps for interacting with a graphical user interface to generate a lighting effect in an environment.

[0106] FIG. 32 is a schematic diagram depicting light systems that transmit data that is generated by a network transmitter.

[0107] FIG. 33 is a flow diagram showing steps for generating a control signal for a light system using an object-oriented programming technique.

[0108] FIG. 34 is a flow diagram for executing a thread to generate a lighting signal for a real world light system based on data from a computer application.

[0109] FIG. 35 is a flow chart that provides steps for a method of providing for coordinated illumination.

[0110] FIG. 36 is another flow chart with steps for providing coordinated illumination.

[0111] FIG. 37 shows a configuration file for attributes of a lighting unit.

[0112] FIG. 38 shows steps for creating a configuration file for lighting units.

[0113] FIG. 39 shows a system for using an array of lights in conjunction with a configuration file.

[0114] FIG. 40 shows a flow chart with steps for programming a system to coordinate lights with a game.

[0115] FIG. 41 shows a typical low voltage switching power supply.

[0116] FIG. 42 shows a block diagram of a typical low voltage power supply with a line filter.

[0117] FIG. 43 shows another power supply arrangement with an integrated PFC and DC-DC converter.

[0118] FIG. 44 is a more detailed breakdown of the power supply of FIG. 43 with the line filter.

[0119] FIG. 45 continues FIG. 44 to the output stage of the power supply.

[0120] FIG. 46 is an alternative embodiment of a power supply.

[0121] FIG. 47 is an alternative embodiment to the block diagram of the single-stage element of FIG. 43 .

[0122] FIG. 48 is a block diagram of a typical LED Illumination power and data supply system for a lighting unit.

[0123] FIG. 49 is an embodiment of a power-factor-corrected power supply.

[0124] FIG. 50 shows another embodiment of a two-stage design of a power supply.

[0125] FIG. 51 shows another embodiment of a power-factor-correct power supply.

[0126] FIG. 52 illustrates a configuration of a lighting unit according to the present invention.

[0127] FIG. 53 illustrates a process flow diagram according to the present invention.

[0128] FIG. 54 illustrates a lighting system according to the principles of the present invention.

[0129] FIG. 55 illustrates a lighting system according to the principles of the present invention.

[0130] FIG. 56 illustrates a lighting system according to the principles of the present invention.

[0131] FIG. 57 illustrates a bracket according to the principles of the present invention.

[0132] FIG. 58 illustrates a lighting system according to the principles of the present invention.

[0133] FIG. 59 illustrates a lighting system including an optic according to the principles of the present invention.

[0134] FIG. 60 illustrates a circuit assembly according to the principles of the present invention.

[0135] FIG. 61 illustrates an optic with end cap according to the principles of the present invention.

[0136] FIG. 62 illustrates an end cap with a purge vent according to the principles of the present invention.

[0137] FIG. 63 illustrates a lighting system assembly according to the principles of the present invention.

[0138] FIG. 64 illustrates an end cap and expansion system according to the principles of the present invention.

[0139] FIG. 65 illustrates a wiring system according to the principles of the present invention.

[0140] FIG. 66 illustrates a circuit assembly according to the principles of the present invention.

[0141] FIG. 67 depicts an array of linear lighting units that can display different effects.

[0142] FIG. 68 depicts a building with a configuration of lights.

[0143] FIG. 69 depicts an array of linear lighting units substantially covering a building exterior.

[0144] FIG. 70 depicts display of a word on an array of linear lighting units on the exterior of a building.

[0145] FIG. 71 depicts an array of lighting units of different configurations for producing a varied display on the exterior of a building.

[0146] FIG. 72 depicts a stairway and deck lit by linear lighting units.

[0147] FIG. 73 depicts a house lit by a configuration of linear lighting units.

[0148] FIG. 74 depicts a substantially cylindrical configuration of lighting units for producing a display.

[0149] FIG. 75 depicts a corridor with lighting units in a configuration substantially covering the ceiling and walls of the corridor.

[0150] FIG. 76 depicts a configuration of lighting units in a dome shape.

[0151] FIG. 77 depicts a configuration of lighting units disposed on a sail boat.

DETAILED DESCRIPTION

[0152] The description below pertains to several illustrative embodiments of the invention. Although many variations of the invention may be envisioned by one skilled in the art, such variations and improvements are intended to fall within the compass of this disclosure. Thus, the scope of the invention is not to be limited in any way by the disclosure below.

[0153] Various embodiments of the present invention are described below, including certain embodiments relating particularly to LED-based light sources. It should be appreciated, however, that the present invention is not limited to any particular manner of implementation, and that the various embodiments discussed explicitly herein are primarily for purposes of illustration. For example, the various concepts discussed herein may be suitably implemented in a variety of environments involving LED-based light sources, other types of light sources not including LEDs, environments that involve both LEDs and other types of light sources in combination, and environments that involve non-lighting-related devices alone or in combination with various types of light sources.

[0154] FIG. 1 illustrates one example of a lighting unit 100 that may serve as a device in a lighting environment according to one embodiment of the present invention. Some examples of LED-based lighting units similar to those that are described below in connection with FIG. 1 may be found, for example, in U.S. Pat. No. 6,016,038, issued Jan. 18, 2000 to Mueller et al., entitled “Multicolored LED Lighting Method and Apparatus,” and U.S. Pat. No. 6,211,626, issued Apr. 3, 2001 to Lys et al, entitled “Illumination Components,” which patents are both hereby incorporated herein by reference.

[0155] In various embodiments of the present invention, the lighting unit 100 shown in FIG. 1 may be used alone or together with other similar lighting units in a system of lighting units (e.g., as discussed further below in connection with FIG. 2 ). Used alone or in combination with other lighting units, the lighting unit 100 may be employed in a variety of applications including, but not limited to, interior or exterior space illumination in general, direct or indirect illumination of objects or spaces, theatrical or other entertainment-based/special effects illumination, decorative illumination, safety-oriented illumination, vehicular illumination, illumination of displays and/or merchandise (e.g. for advertising and/or in retail/consumer environments), combined illumination and communication systems, etc., as well as for various indication and informational purposes.

[0156] Additionally, one or more lighting units similar to that described in connection with FIG. 1 may be implemented in a variety of products including, but not limited to, various forms of light modules or bulbs having various shapes and electrical/mechanical coupling arrangements (including replacement or “retrofit” modules or bulbs adapted for use in conventional sockets or fixtures), as well as a variety of consumer and/or household products (e.g., night lights, toys, games or game components, entertainment components or systems, utensils, appliances, kitchen aids, cleaning products, etc.).

[0157] In one embodiment, the lighting unit 100 shown in FIG. 1 may include one or more light sources 104 A, 104 B, 104 C, and 104 D wherein one or more of the light sources may be an LED-based light source that includes one or more light emitting diodes (LEDs). In one aspect of this embodiment, any two or more of the light sources 104 A, 104 B, 104 C and 104 D may be adapted to generate radiation of different colors (e.g. red, green, and blue, respectively). Although FIG. 1 shows four light sources 104 A, 104 B, 104 C, and 104 D, it should be appreciated that the lighting unit is not limited in this respect, as different numbers and various types of light sources (all LED-based light sources, LED-based and non-LED-based light sources in combination, etc.) adapted to generate radiation of a variety of different colors, including essentially white light, may be employed in the lighting unit 100 , as discussed further below.

[0158] As shown in FIG. 1 , the lighting unit 100 also may include a processor 102 that is configured to output one or more control signals to drive the light sources 104 A, 104 B, 104 C and 104 D so as to generate various intensities of light from the light sources. For example, in one implementation, the processor 102 may be configured to output at least one control signal for each light source so as to independently control the intensity of light generated by each light source. Some examples of control signals that may be generated by the processor to control the light sources include, but are not limited to, pulse modulated signals, pulse width modulated signals (PWM), pulse amplitude modulated signals (PAM), pulse displacement modulated signals, analog control signals (e.g., current control signals, voltage control signals), combinations and/or modulations of the foregoing signals, or other control signals. In one aspect, the processor 102 may control other dedicated circuitry (not shown in FIG. 1 ), which in turn controls the light sources so as to vary their respective intensities.

[0159] Lighting systems in accordance with this specification can operate LEDs in an efficient manner. Typical LED performance characteristics depend on the amount of current drawn by the LED. The optimal efficacy may be obtained at a lower current than the level where maximum brightness occurs. LEDs are typically driven well above their most efficient operating current to increase the brightness delivered by the LED while maintaining a reasonable life expectancy. As a result, increased efficacy can be provided when the maximum current value of the PWM signal may be variable. For example, if the desired light output is less than the maximum required output the current maximum and/or the PWM signal width may be reduced. This may result in pulse amplitude modulation (PAM), for example; however, the width and amplitude of the current used to drive the LED may be varied to optimize the LED performance. In an embodiment, a lighting system may also be adapted to provide only amplitude control of the current through the LED. While many of the embodiments provided herein describe the use of PWM and PAM to drive the LEDs, one skilled in the art would appreciate that there are many techniques to accomplish the LED control described herein and, as such, the scope of the present invention is not limited by any one control technique. In embodiments, it is possible to use other techniques, such as pulse frequency modulation (PFM), or pulse displacement modulation (PDM), such as in combination with either or both of PWM and PAM.

[0160] Pulse width modulation (PWM) involves supplying a substantially constant current to the LEDs for particular periods of time. The shorter the time, or pulse-width, the less brightness an observer will observe in the resulting light. The human eye integrates the light it receives over a period of time and, even though the current through the LED may generate the same light level regardless of pulse duration, the eye will perceive short pulses as “dimmer” than longer pulses. The PWM technique is considered on of the preferred techniques for driving LEDs, although the present invention is not limited to such control techniques. When two or more colored LEDs are provided in a lighting system, the colors may be mixed and many variations of colors can be generated by changing the intensity, or perceived intensity, of the LEDs. In an embodiment, three colors of LEDs are presented (e.g., red, green and blue) and each of the colors is driven with PWM to vary its apparent intensity. This system allows for the generation of millions of colors (e.g., 16.7 million colors when 8-bit control is used on each of the PWM channels).

[0161] In an embodiment the LEDs are modulated with PWM as well as modulating the amplitude of the current driving the LEDs (Pulse Amplitude Modulation, or PAM). LED efficiency increases to a maximum followed by decreasing efficiency. Typically, LEDs are driven at a current level beyond its maximum efficiency to attain greater brightness while maintaining acceptable life expectancy. The objective is typically to maximize the light output from the LED while maintaining an acceptable lifetime. In an embodiment, the LEDs may be driven with a lower current maximum when lower intensities are desired. PWM may still be used, but the maximum current intensity may also be varied depending on the desired light output. For example, to decrease the intensity of the light output from a maximum operational point, the amplitude of the current may be decreased until the maximum efficiency is achieved. If further reductions in the LED brightness are desired the PWM activation may be reduced to reduce the apparent brightness.

[0162] In one embodiment of the lighting unit 100 , one or more of the light sources 104 A, 104 B, 104 C and 104 D shown in FIG. 1 may include a group of multiple LEDs or other types of light sources (e.g., various parallel and/or serial connections of LEDs or other types of light sources) that are controlled together by the processor 102 . Additionally, it should be appreciated that one or more of the light sources 104 A, 104 B, 104 C and 104 D may include one or more LEDs that are adapted to generate radiation having any of a variety of spectra (i.e., wavelengths or wavelength bands), including, but not limited to, various visible colors (including essentially white light), various color temperatures of white light, ultraviolet, or infrared.

[0163] In another aspect of the lighting unit 100 shown in FIG. 1 , the lighting unit 100 may be constructed and arranged to produce a wide range of variable color radiation. For example, the lighting unit 100 may be particularly arranged such that the processor-controlled variable intensity light generated by two or more of the light sources combines to produce a mixed colored light (including essentially white light having a variety of color temperatures). In particular, the color (or color temperature) of the mixed colored light may be varied by varying one or more of the respective intensities of the light sources (e.g., in response to one or more control signals output by the processor 102 ). Furthermore, the processor 102 may be particularly configured (e.g., programmed) to provide control signals to one or more of the light sources so as to generate a variety of static or time-varying (dynamic) multi-color (or multi-color temperature) lighting effects.

[0164] As shown in FIG. 1 , the lighting unit 100 also may include a memory 114 to store various information. For example, the memory 114 may be employed to store one or more lighting programs for execution by the processor 102 (e.g., to generate one or more control signals for the light sources), as well as various types of data useful for generating variable color radiation (e.g., calibration information, discussed further below). The memory 114 also may store one or more particular identifiers (e.g., a serial number, an address, etc.) that may be used either locally or on a system level to identify the lighting unit 100 . In various embodiments, such identifiers may be pre-programmed by a manufacturer, for example, and may be either alterable or non-alterable thereafter (e.g., via some type of user interface located on the lighting unit, via one or more data or control signals received by the lighting unit, etc.). Alternatively, such identifiers may be determined at the time of initial use of the lighting unit in the field, and again may be alterable or non-alterable thereafter.

[0165] One issue that may arise in connection with controlling multiple light sources in the lighting unit 100 of FIG. 1 , and controlling multiple lighting unit 100 in a lighting system (e.g., as discussed below in connection with FIG. 2 ), relates to potentially perceptible differences in light output between substantially similar light sources. For example, given two virtually identical light sources being driven by respective identical control signals, the actual intensity of light output by each light source may be perceptibly different. Such a difference in light output may be attributed to various factors including, for example, slight manufacturing differences between the light sources, normal wear and tear over time of the light sources that may differently alter the respective spectrums of the generated radiation, etc. For purposes of the present discussion, light sources for which a particular relationship between a control signal and resulting intensity are not known are referred to as “uncalibrated” light sources.

[0166] The use of one or more uncalibrated light sources in the lighting unit 100 shown in FIG. 1 may result in generation of light having an unpredictable, or “uncalibrated,” color or color temperature. For example, consider a first lighting unit including a first uncalibrated red light source and a first uncalibrated blue light source, each controlled by a corresponding control signal having an adjustable parameter in a range of from zero to 255 (0-255). For purposes of this example, if the red control signal is set to zero, blue light is generated, whereas if the blue control signal is set to zero, red light is generated. However, if both control signals are varied from non-zero values, a variety of perceptibly different colors may be produced (e.g., in this example, at very least, many different shades of purple are possible). In particular, perhaps a particular desired color (e.g., lavender) is given by a red control signal having a value of 125 and a blue control signal having a value of 200.

[0167] Now consider a second lighting unit including a second uncalibrated red light source substantially similar to the first uncalibrated red light source of the first lighting unit, and a second uncalibrated blue light source substantially similar to the first uncalibrated blue light source of the first lighting unit. As discussed above, even if both of the uncalibrated red light sources are driven by respective identical control signals, the actual intensity of light output by each red light source may be perceptibly different. Similarly, even if both of the uncalibrated blue light sources are driven by respective identical control signals, the actual intensity of light output by each blue light source may be perceptibly different.

[0168] With the foregoing in mind, it should be appreciated that if multiple uncalibrated light sources are used in combination in lighting units to produce a mixed colored light as discussed above, the observed color (or color temperature) of light produced by different lighting units under identical control conditions may be perceivably different. Specifically, consider again the “lavender” example above; the “first lavender” produced by the first lighting unit with a red control signal of 125 and a blue control signal of 200 indeed may be perceptibly different than a “second lavender” produced by the second lighting unit with a red control signal of 125 and a blue control signal of 200. More generally, the first and second lighting units generate uncalibrated colors by virtue of their uncalibrated light sources.

[0169] In view of the foregoing, in one embodiment of the present invention, the lighting unit 100 includes calibration means to facilitate the generation of light having a calibrated (e.g., predictable, reproducible) color at any given time. In one aspect, the calibration means is configured to adjust the light output of at least some light sources of the lighting unit so as to compensate for perceptible differences between similar light sources used in different lighting units.

[0170] For example, in one embodiment, the processor 102 of the lighting unit 100 is configured to control one or more of the light sources 104 A, 104 B, 104 C and 104 D so as to output radiation at a calibrated intensity that substantially corresponds in a predetermined manner to a control signal for the light source(s). As a result of mixing radiation having different spectra and respective calibrated intensities, a calibrated color is produced. In one aspect of this embodiment, at least one calibration value for each light source is stored in the memory 114 , and the processor is programmed to apply the respective calibration values to the control signals for the corresponding light sources so as to generate the calibrated intensities.

[0171] In one aspect of this embodiment, one or more calibration values may be determined once (e.g., during a lighting unit manufacturing/testing phase) and stored in the memory 114 for use by the processor 102 . In another aspect, the processor 102 may be configured to derive one or more calibration values dynamically (e.g. from time to time) with the aid of one or more photosensors, for example. In various embodiments, the photosensor(s) may be one or more external components coupled to the lighting unit, or alternatively may be integrated as part of the lighting unit itself. A photosensor is one example of a signal source that may be integrated or otherwise associated with the lighting unit 100 , and monitored by the processor 102 in connection with the operation of the lighting unit. Other examples of such signal sources are discussed further below, in connection with the signal source 124 shown in FIG. 1 .

[0172] One exemplary method that may be implemented by the processor 102 to derive one or more calibration values includes applying a reference control signal to a light source, and measuring (e.g., via one or more photosensors) an intensity of radiation thus generated by the light source. The processor may be programmed to then make a comparison of the measured intensity and at least one reference value (e.g., representing an intensity that nominally would be expected in response to the reference control signal). Based on such a comparison, the processor may determine one or more calibration values for the light source. In particular, the processor may derive a calibration value such that, when applied to the reference control signal, the light source outputs radiation having an intensity that corresponds to the reference value (i.e., the “expected” intensity).

[0173] In various aspects, one calibration value may be derived for an entire range of control signal/output intensities for a given light source. Alternatively, multiple calibration values may be derived for a given light source (i.e., a number of calibration value “samples” may be obtained) that are respectively applied over different control signal/output intensity ranges, to approximate a nonlinear calibration function in a piecewise linear manner.

[0174] In another aspect, as also shown in FIG. 1 , the lighting unit 100 optionally may include one or more user interfaces 118 that are provided to facilitate any of a number of user-selectable settings or functions (e.g., generally controlling the light output of the lighting unit 100 , changing and/or selecting various pre-programmed lighting effects to be generated by the lighting unit, changing and/or selecting various parameters of selected lighting effects, setting particular identifiers such as addresses or serial numbers for the lighting unit, etc.). In various embodiments, the communication between the user interface 118 and the lighting unit may be accomplished through wire or cable, or wireless transmission.

[0175] In one implementation, the processor 102 of the lighting unit monitors the user interface 118 and controls one or more of the light sources 104 A, 104 B, 104 C and 104 D based at least in part on a user's operation of the interface. For example, the processor 102 may be configured to respond to operation of the user interface by originating one or more control signals for controlling one or more of the light sources. Alternatively, the processor 102 may be configured to respond by selecting one or more pre-programmed control signals stored in memory, modifying control signals generated by executing a lighting program, selecting and executing a new lighting program from memory, or otherwise affecting the radiation generated by one or more of the light sources.

[0176] In particular, in one implementation, the user interface 118 may constitute one or more switches (e.g., a standard wall switch) that interrupt power to the processor 102 . In one aspect of this implementation, the processor 102 is configured to monitor the power as controlled by the user interface, and in turn control one or more of the light sources 104 A, 104 B, 104 C and 104 D based at least in part on a duration of a power interruption caused by operation of the user interface. As discussed above, the processor may be particularly configured to respond to a predetermined duration of a power interruption by, for example, selecting one or more pre-programmed control signals stored in memory, modifying control signals generated by executing a lighting program, selecting and executing a new lighting program from memory, or otherwise affecting the radiation generated by one or more of the light sources.

[0177] LED based lighting systems may be preprogrammed with several lighting routines for use in a non-networked mode. For example, the switches on the lighting device may be set such that the lighting device produces a solid color, a program that slowly changes the color of the illumination throughout the visible spectrum over a few minutes, or a program designed to change the illumination characteristics quickly or even strobe the light. Generally, the switches used to set the address of the lighting system may also be used to set the system into a preprogrammed non-networked lighting control mode. Each lighting control programs may also have adjustable parameters that are adjusted by switch settings. All of these functions can also be set using a programming device according to the principles of the invention. For example, a user interface may be provided in the programming device to allow the selection of a program in the lighting system, adjust a parameter of a program in the lighting system, set a new program in the lighting system, or make another setting in the lighting system. By communicating to the lighting system through a programming device according to the principles of the invention, a program could be selected and an adjustable parameter could be set. The lighting device can then execute the program without the need of setting switches. Another problem with setting switches for such a program selection is that the switches do not provide an intuitive user interface. The user may have to look to a table in a manual to find the particular switch setting for a particular program, whereas a programming device according to the principles of the invention may contain a user interface screen. The user interface may display information relating to a program, a program parameter or other information relating to the illumination device. The programmer may read information from the illumination apparatus and provide this information of the user interface screen.

[0178] FIG. 1 also illustrates that the lighting unit 100 may be configured to receive one or more signals 122 from one or more other signal sources 124 . In one implementation, the processor 102 of the lighting unit may use the signal(s) 122 , either alone or in combination with other control signals (e.g., signals generated by executing a lighting program, one or more outputs from a user interface, etc.), so as to control one or more of the light sources 104 A, 104 B, 104 C and 104 D in a manner similar to that discussed above in connection with the user interface.

[0179] By way of example, a lighting unit 100 may also include sensors and or transducers and or other signal generators (collectively referred to hereinafter as sensors) that serve as signal sources 124 . The sensors may be associated with the processor 102 through wired or wireless transmission systems. Much like the user interface and network control systems, the sensor(s) may provide signals to the processor and the processor may respond by selecting new LED control signals from memory 114 , modifying LED control signals, generating control signals, or otherwise change the output of the LED(s).

[0180] Examples of the signal(s) 122 that may be received and processed by the processor 102 include, but are not limited to, one or more audio signals, video signals, power signals, various types of data signals, signals representing information obtained from a network (e.g., the Internet), signals representing some detectable/sensed condition, signals from lighting units, signals consisting of modulated light, etc. In various implementations, the signal source(s) 124 may be located remotely from the lighting unit 100 , or included as a component of the lighting unit. For example, in one embodiment, a signal from one lighting unit 100 could be sent over a network to another lighting unit 100 .

[0181] Some examples of a signal source 124 that may be employed in, or used in connection with, the lighting unit 100 of FIG. 1 include any of a variety of sensors or transducers that generate one or more signals 122 in response to some stimulus. Examples of such sensors include, but are not limited to, various types of environmental condition sensors, such as thermally sensitive (e.g., temperature, infrared) sensors, humidity sensors, motion sensors, photosensors/light sensors (e.g., sensors that are sensitive to one or more particular spectra of electromagnetic radiation), sound or vibration sensors or other pressure/force transducers (e.g., microphones, piezoelectric devices), and the like.

[0182] Additional examples of a signal source 124 include various metering/detection devices that monitor electrical signals or characteristics (e.g., voltage, current, power, resistance, capacitance, inductance, etc.) or chemical/biological characteristics (e.g., acidity, a presence of one or more particular chemical or biological agents, bacteria, etc.) and provide one or more signals 122 based on measured values of the signals or characteristics. Yet other examples of a signal source 124 include various types of scanners, image recognition systems, voice or other sound recognition systems, artificial intelligence and robotics systems, and the like. A signal source 124 could also be a lighting unit 100 , a processor 102 , or any one of many available signal generating devices, such as media players, MP3 players, computers, DVD players, CD players, television signal sources, camera signal sources, microphones, speakers, telephones, cellular phones, instant messenger devices, SMS devices, wireless devices, personal organizer devices, and many others.

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