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7391162 |
Luminaire with LED(s) and method for operating the luminaire
The invention relates to a luminaire with at least one LED and a method for operating the luminaire. The luminaire has a sensor for detecting at least a part of the light emitted by the LED and...
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7329998 |
Lighting system including photonic emission and detection using light-emitting elements
The present invention provides a system and method for generating light using light-emitting elements and detecting the intensity and spectral power distribution of light using the same...
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7318658 |
High power LED color bulb with infrared remote function
A high power LED color bulb with infrared remote function has a reflector having front and rear openings and a light guide hole, a light guide bar received inside light guide hole, an LED module...
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7214950 |
Transition radiation apparatus
In one embodiment of the present invention, thermal deformation or bending of membranes in a transition radiation emitting structure can be reduced by providing flex regions in the membranes or the...
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7212287 |
Providing optical feedback on light color
Optical feedback for controlling color of light from a light source is provided. Incident optical energy of the light is detected as a function of discrete steps of wavelength. For each discrete...
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7164110 |
Diode-based light sensors and methods
The present invention provides an illumination management system that includes a first LED that outputs a first signal when exposed to a first spectrum of light, the first signal indicating an...
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7045975 |
Apparatus and methods for providing emergency safety lighting
The present invention transforms existing electrical wall outlets into an emergency lighting system for homes, hospitals, hotels, nursing homes and businesses. The lighting device, designed as a...
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6952082 |
Microwave excited ultraviolet lamp system with single electrical interconnection
A microwave excited ultraviolet lamp system having a single electrical cable that supplies operating voltages from a power supply to a lamp head. The single electrical cable may provide high...
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6828733 |
Remote lamp control apparatus
A remote lamp control system for controlling the off/on status and dimming of the illumination in a high infrared and EMI noise environment is disclosed. The transmitted control signal is an...
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6779896 |
Electronic circuit for operating a HID lamp, and image projector
An electronic circuit for operating a High Intensity Discharge (HID) lamp, in particular a Ultra High Pressure (UHP) lamp, such as those preferably used in image projectors. The circuit comprises a...
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6765339 |
Infrared lamp and procedure for heating material to be processed
An infrared lamp with a closed-off enveloping tube which encloses an emission source joined with contacts for a power supply in the form of a carbon ribbon which, extending in a direction of a long...
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6710546 |
Remote control test apparatus
A remote control system for testing the ready status of lighting fixtures such as emergency exit signs and for operating such fixtures as by controlling the off/on status and dimming of the...
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6617560 |
Lighting control circuit including LED for detecting exposure to radiation
The present invention provides a lighting control circuit having an LED that outputs a first signal in response to being exposed to radiation, a detection circuit coupled to the LED. The detection...
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6593700 |
Ornamental display lamp assembly
An ornamental display lamp assembly is constructed to include a base holding a light source, an artificial plant fixedly mounted on the base, a plurality of first fiber optics embedded in the...
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6586891 |
High-intensity discharge lamp and high-intensity discharge lamp operating apparatus
A high-intensity discharge lamp includes an arc tube including a pair of electrodes opposed to each other therein; and a trigger wire made of a conductive material provided in an outer...
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6577067 |
Switching system using laser induced discharge
A switching system using laser induced discharge is provided which is capable of reliable switching with a simple structure, multiple switching for a number of circuits, good synchronization and no...
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6392343 |
Metal halide lamp
The invention relates to a metal halide lamp having an outer bulb containing besides a discharge vessel a UV enhancer (UVE). The UVE has a ceramic wall and, according to the invention, is provided...
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6252355 |
Methods and apparatus for controlling the intensity and/or efficiency of a fluorescent lamp
Methods and apparatus for controlling the brightness level of a lamp in a backlit LCD display include primary and secondary controllers. The primary controller establishes the arc drive to the lamp...
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6191531 |
Device for influencing a lighting installation as a function of ambient light
The invention relates to a device for influencing a lighting installation, and more particularly, includes a lighting installation of a motor vehicle, depending on ambient light. The device...
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6153985 |
LED driving circuitry with light intensity feedback to control output light intensity of an LED
An LED indicator system with at least one LED, and driving circuitry for driving the at least one LED. A power supply supplies a drive current to the at least one LED. A photodetector detects a...
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6118426 |
Transducers and indicators having printed displays
A process for creating an electronically addressable display includes multiple printing operations, similar to a multi-color process in conventional screen printing. In some of the process steps,...
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6084231 |
Closed-loop, daylight-sensing, automatic window-covering system insensitive to radiant spectrum produced by gaseous-discharge lamps
A system for automatic regulation of daylight admitted by a window in the presence of artificial illumination produced by a high-efficiency (e.g., fluorescent-type) electric lamp. A preferred...
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5973458 |
Sequential feedback control system for an electronic ballast
A sequential feedback control system for an electronic ballast provides feedback control during soft start and dimming operations. The system includes a feedback control portion that generates a...
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5744913 |
Fluorescent lamp apparatus with integral dimming control
Dimmable fluorescent lamp apparatus includes a dimming control element housed in an integral adapter having a base which installs directly on an existing incandescent or other lighting fixture. The...
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5648656 |
System to optimize artificial lighting levels with increasing daylight level
An artificial lighting system comprises a daylight sensor for sensing a level of daylight, artificial light source means for providing a level of artificial light, daylight control means for...
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5633565 |
Electronic flasher circuit
An electrical flasher circuit has improved operating characteristics, in particular by providing continuous illumination for a long period of time from a fully charged solar battery. The circuit...
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5585697 |
PAR lamp having an integral photoelectric circuit arrangement
A reflector lamp assembly having an integral photo-sensor and sensing circuit arrangement associated therewith provides for sensing the ambient light conditions at a point adjacent the top surface...
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5585696 |
High current density glow discharge switch
The present invention is directed to a high current density glow discharge switch which is capable of preventing confinement of an electron current to the vicinity of the center of a flat electrode...
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5563474 |
Electrodeless low-pressure discharge lamp
An electrodeless low-pressure discharge lamp includes a translucent discharge-vessel of a glass that contains at least 5 weight % sodium, encloses a discharge-space and includes a mercury...
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5554912 |
Adaptive instrument display brightness control system
An adaptive instrument display brightness control system that automatically controls the instrument display brightness of a vehicle based on a vehicle operator's changes to the display brightness...
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5548188 |
Apparatus and method for controlling illumination of lamp
An apparatus and a method for controlling an illumination of a lamp. The apparatus comprises an illumination detecting circuit for detecting an ambient illumination, a human body detecting circuit...
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5459373 |
Mini-fluorescent lamp with automatic on/off
A circuit to reduce the amount of time for automatic turn-on of a fluorescent lamp as compared with a thermocouple by using a diode bridge, silicon controlled rectifier, a transistor, and a CdS...
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5455487 |
Moveable desktop light controller
A device for controlling power to an electrical load. The device has two components: a portable desktop detector unit and a wall-mounted receiver unit. The desktop detector detects the presence of...
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5428265 |
Processor controlled fluorescent lamp dimmer for aircraft liquid crystal display instruments
A processor controlled fluorescent lamp dimmer circuit is shown for use in an aircraft display system utilizing a fluorescent lamp in the backlight system of individual LCD display devices. By use...
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5418432 |
Variable color luminaire
A variable color luminaire is arranged for controlling a plurality of light sources of different emission colors to be at predetermined dimming levels by means of dimmers, performing a comparison...
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5416385 |
Means for compact spatial optical integration
An apparatus and method of controlling the light intensity in a light source of variable emission affected by a drive signal. Spatial optical integration based upon light summation is incorporated...
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5414254 |
Optical switch with tamper indicating feature for discouraging the use of an external light source to defeat the intended operation of the optical switch
An optical switch, or detector, is provided with a light source and a light sensitive component. The light source, which can be an infrared light emitting diode, and the light sensitive component,...
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5399941 |
Optical pseudospark switch
Disclosed is a high-voltage, high-current, multichannel, optically-trigge switch with the potential for improved lifetime of operation. Triggering of the switch is accomplished by ultraviolet...
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5198772 |
Removable discharge initiating means for cold cathode discharge ionization gauge
A cold cathode gauge including a glow lamp or the like disposed within the vacuum space of the gauge for initiating the gauge discharge, the lamp emitting UV or blue light directly at at least the...
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5177409 |
Controllable electronic ballast
In an electronic ballast for fluorescent lamps, means are provided by which the lamps are powered at their normal level whenever power line voltage is initially connected to the ballast. However,...
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5157333 |
Discharge initiating means for cold cathode discharge ionization gauge
A cold cathode gauge including a glow lamp or the like disposed within the vacuum space of the gauge for initiating the gauge discharge, the lamp emitting UV or blue light directly at least at the...
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5136212 |
Electron emitting device, electron generator employing said electron emitting device, and method for driving said generator
An electron emitting device, comprising: a first electrode provided on a substrate; a first layer provided on said electrode and capable of undergoing transition from an electrically high...
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5075603 |
Cold-cathode discharge lamp device
A cold-cathode discharge lamp device including a cold-cathode discharge lamp unit and a supplemental light source for emitting light toward a discharge space between a pair of cold-electrodes of...
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5032766 |
Special effects generator
A device for use as an electronic generator for generating a highly realistic flickering light is disclosed which has adjustable brightness, flicker rate, and flicker level to accurately simulate a...
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4996606 |
Light emitting device and original reading apparatus having the device
An image reading apparatus comprises a light emitting device for illuminating an original including information to be read; image sensor for inputting an optical information and converting it into...
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4990831 |
Spark gap switch system with condensable dielectric gas
A spark gap switch system is disclosed which is capable of operating at a high pulse rate comprising an insulated switch housing having a purging gas entrance port and a gas exit port, a pair of...
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4987344 |
Arc discharge lamp with internal starter
A high intensity discharge lamp (e.g., a metal halide) containing an arc tube having first and second electrodes respectively sealed at opposite ends thereof. An outer envelope surrounds the arc...
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4978893 |
Laser-triggered vacuum switch
A laser-triggered vacuum switch has a material such as a alkali metal halide on the cathode electrode for thermally activated field emission of electrons and ions upon interaction with a laser...
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4970434 |
Dielectric liquid pulsed-power switch
This disclosure identifies dielectric liquids for use as opening and closing switching media in pulsed power technology, and describes a dielectric-liquid-pulsed-power switch empolying flashlamps.
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4970433 |
Apparatus and method for tuned unsteady flow purging of high pulse rate spark gaps
A spark gap switch apparatus is disclosed which is capable of operating at a high pulse rate which comprises an insulated housing; a pair of spaced apart electrodes each having one end thereof...
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