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7615730 |
Device and method for measuring wavelength of an optical signal
A wavelength meter, an associated method, and system are generally described. In one example, an apparatus includes a photodiode to receive an optical signal and to generate a photocurrent upon...
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7605363 |
Optical pickup unit including a receiving portion
An optical pickup unit comprising: a circuit connected to a light emitting device emitting light; and a counterpart circuit connected to the circuit, the circuit being soldered to the counterpart...
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7605360 |
Power supply system for green laser indicating pen
A power supply system for a green laser indicating pen, comprises a computer having an USB receptacle which is connected to a current source in the computer; a USB plug being connected to the USB...
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7548352 |
Illumination device, document reading device, adjusting device, and image forming apparatus
An illumination device for a reading device which irradiates light over a predetermined illumination width including a reading area having a predetermined reading width extending in a main scanning...
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7547868 |
Optical near-field generating apparatus and method and information recording and reproducing apparatus
An optical near-field generating apparatus includes a conductive scatterer causing an optical near-field based on a surface plasmon to be generated by being illuminated by incident light, and a...
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7442950 |
Light emitting device
The invention has a monitoring portion which detects change of ambient temperature and degradation with time, provided with a plurality of monitoring pixels and a monitoring line. Each of the...
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7439533 |
Optical module and optical communication device
An optical module includes a light emitting element, a connector part that supports one end of an optical fiber and optically couples the optical fiber to the light emitting element, and a...
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7365368 |
Surface-emitting type wafer and method for manufacturing the same, and burn-in method for surface-emitting type wafers
To simplify the burn-in process and reduce its cost for a surface-emitting type wafer and its manufacturing method, and for a burn-in method for a surface-emitting type wafer. A surface-emitting...
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7355155 |
Light emitting apparatus for medical applications
A light emitting apparatus is disclosed for medical applications including photo-dynamic-therapy (PDT), photobiostimulation (photobiomodulation), photo-sterilization, and photo-curing. The light...
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7323704 |
Chip type led
A chip type LED which is capable of laterally emitting light from the light emitting diode chip and having a relatively small thickness is provided. The chip type LED includes an insulating...
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7115888 |
LED driving semiconductor circuit and LED driving apparatus including the same
A LED driving semiconductor circuit of the present invention includes a first input terminal connected to a light-emitting diode, a switching device block having a first FET and a first switching...
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7109664 |
LED light with blaze-like radiance effect
This invention concerns a LED light which emits blaze-like radiance comprising a negative prop stand, with one end extending to a negative receiver which can connect to the negative power supply, a...
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7095267 |
MOSFET drive circuit, programmable power supply and semiconductor test apparatus
In a programmable power supply used in a semiconductor test apparatus, high-speed switching of a large current in a current rage or an output relay is enabled. In a MOSFET drive circuit 22 of a...
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6979582 |
Vertical-cavity surface emitting laser diode and method for producing the same
The present invention provides a vertical-cavity surface emitting laser (VCSEL) diode and a method for producing the same. In this method, an n-type and a p-type ohmic contact electrodes are...
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6707021 |
Transparent medium processing device
The transparent medium processing device comprises: a light control section 2 for performing variable control for the status of the laser beam emitted from the light source section 1 , and a...
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6597018 |
Semiconductor light emitter and flat panel display lighting system
A flat panel display lighting system 20 includes: semiconductor light-emitting device 10 ; board 21 ; and light guide plate 22 . The device 10 includes an inverted T-shaped substrate 1 ...
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6483100 |
Photonic device
Silicon possesses an indirect band-gap, which limits its use in some photonic applications. A phonon generator is included in a silicon-based device, which promotes electron-hole recombination and...
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6410904 |
Multi-beam emitting device
A semiconductor laser device includes a metal case. The metal case includes a brass stem and a cap that covers an upper portion of the stem and has a laser emitting hole therein. The stem is...
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6400099 |
Accelerated illuminate response system for light emitting diodes
An accelerated illuminate response system controls a light emitting diode (“LED”), for instance, in an optical sensor system that monitors ink droplets on a print media in an inkjet printing...
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6153980 |
LED array having an active shunt arrangement
A device, e.g., a luminaire, that includes a plurality of LEDs connected in series, and an active shunt arrangement for sensing a failure of one or more of the LEDs and for shunting current that...
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6054716 |
Semiconductor light emitting device having a protecting device
A semiconductor light emitting device incorporates therein with (a) a light emitting portion formed by semiconductor overlying layers including a first conductivity layer and a second conductivity...
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5963308 |
Distance measuring apparatus
In a distance measuring apparatus for measuring the distance to an object on the basis of reflected light obtained as a result of projecting light toward the object, in the case of an active...
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5953133 |
Scanning apparatus
A scanning apparatus for scanning and reading a luminescent pattern of a sample in a flat-plate shape, having a placing member for placing the sample as an object for reading; a light condensing...
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5834773 |
Method and apparatus for testing the function of microstructure elements
The invention relates to a method as well as to apparatus for testing the function of microstructure elements, wherein the microstructure element is driven for testing the emission and/or...
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5717220 |
Lane monitor for monitoring dressing on the surface of bowling lanes
Time consuming analyzing of the dressing levels on bowling lanes is eliminated through the use of an apparatus that includes a path of travel (48) for a sample strip, a light source (50) on one...
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5329210 |
High-speed driver for an LED communication system or the like
A high-speed driver for LED data communications systems. A differentiator provides a turn-on and a turn-off pulse of current to the LED. The amount of charge delivered during turn-off is adjusted...
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5019746 |
Prefabricated wire leadframe for optoelectronic devices
A light-emitting diode lamp comprises a cathode wire having a cup lined with a metal foil formed in its head end, an anode wire parallel to the cathode wire and having a flattened head end lined...
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5017794 |
Apparatus and method for varying the timing of a control signal
A system and method for transmitting an identification signal include a triggering device for periodically generating an enabling pulse signal at random times, whereby the periodic generation of...
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5007717 |
Real time analyzer for pulsed laser systems
A technique for the simultaneous measurement, in real time, of the changes in mode size, pulse length, and power of a wavetrain of laser pulses delivered by mode-locked or other pulsed laser...
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4955683 |
Apparatus and a method for coupling an optically operative device with an optical fiber
This invention relates to an optical module for coupling an optically operative device with an optical fiber. Near the optically operative device, the module includes a fiber saddle on which the...
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4952820 |
Reduction of intermodulation distortion in light emitting diodes
A low distortion light source comprising a light emitting diode and a compensating diode connected in parallel with respect to a D.C. bias current and in anti-series with respect to an A.C. signal...
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4829533 |
Frequency and output regulation in laser diodes
The present invention is a regulator circuit for combined regulation of the emitted wavelength from a laser diode, and its output. According to the invention, a fraction of the radiation from the...
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4810937 |
Multicolor optical device
A multicolor optical device having at least three optically stable states includes a plurality of pairs of associated light sensors and light sources for emitting light of respectively different...
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4744672 |
Semiconductor arrangement
In a semiconductor arrangement including at least one semiconductor element composed of a semiconductor material which generates recombination radiation when current flows through the semiconductor...
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4737653 |
Image sensor with auxiliary light source
An image sensor comprising at least one first light emitting element for irradiating an original with light, at least one photoconductive element for sensing the light via the original and at least...
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4716399 |
Optomechanical control apparatus
A control apparatus for use in a fly-by-wire flight control system. The apparatus comprises a support structure, a tube (22) mounted to the support structure for rotation about the tube lengthwise...
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4687957 |
Fiber optic transceiver
A half-duplex transceiver circuit is disclosed in which a single diode acts as both the light emitter and the light detector. The diode is connected in parallel with a junction in an associated...
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4686425 |
Multicolor display device
A multicolor display device having seven illuminated optically stable states includes three triads of associated electro-optical components. In each triad, a light sensor is electrically coupled...
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4678269 |
Concentric light source to fiber coupling system
Increased light energy is introduced into the end of a fiber in a fiber optic light transmission system by this invention, thus providing further distances between repeater stations along long...
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4675575 |
Light-emitting diode assemblies and systems therefore
A light string system is provided having a plurality of mono-color or bi-color light-emitting diodes electrically connected thereto. Each light-emitting diode has a generally elongated, hollow...
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4633155 |
Numerical control system
A numerical control system in which data signals are exchanged between a computer processing device MPU and each function block through an address bus ABUS and a data bus DBUS. Parallel electric...
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4607950 |
Mark detection apparatus for a micro-roll film
A mark detecting apparatus for a micro-roll film including one photoelectric element for detecting marks of different sizes provided on one edge portion of a micro-roll film for respective frames...
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4598198 |
Automatic power control for modulated LED photoelectric devices
A pulsed light emitting diode used as the light source in a photoelectric scanner is operated from a secondary power source which automatically adjusts the power to the LED approximately inversely...
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4518255 |
Temperature tracking range finder
The disclosed apparatus is a temperature tracking narrow band optical range finder which includes a prior art GaAs laser diode for emitting a laser energy pulse to a target and an improved GaAs...
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4419011 |
Automatic range finder
An automatic range finder for measuring the distance to an object on the basis of the triangulation principle, including a light-emitting diode (16) for projecting the emitted light toward an...
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4399448 |
High sensitivity photon feedback photodetectors
Large current gains and high degrees of sensitivity to impinging primary photons are realized in photon feedback photodetectors embodying the invention. A photocurrent generated by an internal...
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4362360 |
Socket for a detachable plug and socket connection for coupling an optical fiber and detector arrangement to a light source
The invention relates to a socket for a plug and socket connection for coupling an optical fiber used in optical telecommunication systems. The socket comprises a light detector for converting the...
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4346329 |
Aiming post light
An aiming post light for artillery and mortar operations at night wherein an ordinary GI flashlight may be used, without modification, as a post light when mounted on a support and wherein its...
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4310217 |
Active coupler between an optical bus line and one of the subscribers and bus line comprising such active couplers
An active optical coupler between an optical bus line and subscribers. The optical coupler couples an emitting optical conductor and a receiving optical conductor and includes a diversion device...
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4309605 |
Photo-reflective sensor
A photo-reflective sensor comprising a light-emitting element and a light-detecting element adapted to receive the light from the light-emitting element after the light has been reflected from an...
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