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6127783 |
LED luminaire with electronically adjusted color balance
A white light emitting luminaire includes a plurality of LEDs in each of the colors red, green, and blue with a separate power supply for each color and a photodiode arranged to measure the light...
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6121993 |
Apparatus for forming an image by a plurality of light emitting elements
An apparatus for forming an image comprises a plurality of light emitting elements each emitting light having substanitially the same peak wavelength as those of others; a conveyor to convey a...
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6122408 |
Light normalization method for machine vision
A method for normalizing the lighting changes in an input image made up of an X and Y array of pixels having various illuminating intensities, wherein the lighting changes having an additive effect...
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6118113 |
Focusing mirror control system and method for adjusting same
The present invention is a system and method to quickly and accurately measure the luminance and luminance distribution of a light on the surface of an object so that the position of the focusing...
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6114682 |
Apparatus and method for controlling light intensity
A light intensity control apparatus includes an optical beam splitter which splits light into monitor light and principal light; a polarization beam splitter which splits the monitor light into two...
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6107620 |
Photosensor using side surface light
A photosensor includes a light emitting device, a light receiving device for receiving a side beam from said light emitting device, and a light diffusing member disposed between a side surface of...
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6100515 |
Scanning exposure method and apparatus in which a mask and a substrate are moved at different scan velocities and exposure parameters are varied
An exposure apparatus for transferring a pattern formed on a mask to a photosensitive substrate is provided with an illumination optical system for illuminating a local area on the mask with a...
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6095417 |
Apparatus and method for reading bar codes on a moving web
An apparatus (10) and method for reading bar codes (12) on a moving web (14) has a LED light source (16) that transmits a beam of light (18o) through the advancing web (14). A scanner (20) is...
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6097025 |
Light detection device having an optical-path switching mechanism
A high-throughput light detection instrument and method are described. In some embodiments, switch mechanisms and optical relay structures permit different light sources and/or detectors to be...
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6097020 |
Laser control system having a diffraction grating for use in laser processing machine utilizing laser-induced plasma detecting system
In a laser processing machine, a laser control system includes a photo detector (21) detecting intensity of light generated by laser-induced plasma produced by applying laser beams on an object,...
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6078347 |
Laser scan based recording apparatus
In a laser scan based recording apparatus, laser light from a measuring laser diode is directed to one reflecting surface of a polygonal mirror. The reflected light is detected with a measuring...
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6075233 |
Image reading apparatus with a current controller having a bipolar transistor
An image reading apparatus includes an LED array which generates light of variable luminance in accordance with a supplied current for irradiating a document paper, an image sensor for receiving...
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6067370 |
Cytological system illumination integrity checking apparatus and method
A method for checking cytological system illumination including the steps of checking global illumination variation, static field uniformity, dynamic field uniformity, specimen thickness variation,...
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6057537 |
Optical scanner feedback system having a reflected cylinder lens
An optical scanner feedback system. The feedback system provides a feedback signal representative of a laser beam focused along an optical path onto a scanning surface. The feedback system includes...
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6054702 |
Light-intensity regulating system for a centripetal opposed pendulous accelerometer orientation sensor
The COPA accelerometer utilizes a sensing body having a non-zero product of inertia to sense acceleration when spun or oscillated about the y'-axis of an x'-y'-z' Cartesian coordinate system. The...
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6050387 |
Device and method for identifying bank note
A device and method for identifying a bank note with simple construction offering easy adjustment and a reliable performance independent of the environment under which it works. The device enables...
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6049073 |
Control circuit for a stabilized laser
A stabilized laser is comprised of a laser for generating radiation responsive to a control signal. A control circuit connected to the laser provides the control signal and an injection circuit...
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6043477 |
Apparatus and method for operating devices
An apparatus for operating devices such as image, light and/or sound equipment, electromechanical equipment and so on, has at least one laser source for generating a continuous operating laser beam...
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6043476 |
Film scanner with an adjustable light source for scanning positive or negative films
The present invention provides a film scanner with an adjustable light module whose chromaticity can be adjusted according to the positive or negative film to be scanned. The film scanner comprises...
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6031177 |
Shadowing timer for a photovoltaic solar cell array and photovoltaic power source comprising same
A photovoltaic power source includes a shadowing timer comprising at least one shadowing member (i.e. vane element) secured proximal to an array of photovoltaic solar cells electrically connected...
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6025584 |
Image reading apparatus having a light source controller
An image reading apparatus includes a transfer mechanism for successively transferring a plurality of document sheets along a transfer path, an instant-on type light source for irradiating each...
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6024020 |
Fluorescence dot area meter for measuring the halftone dot area on a printing plate
A fluorescence dot area meter for accurately measuring halftone dot area on a printing plate having an emulsion containing one or more fluorescent compounds. The fluorescent dot area meter...
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6013911 |
Lamp illumination control system and method
The present invention is a system and method to quickly and accurately measure the luminance and luminance distribution of a light on the surface of an object so that the position of the lamp can...
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6011250 |
Light intensity controlling device
A light intensity controlling device has a beam splitter which splits light fluxes emitted from a plurality of independently controlled semiconductor lasers, guided by optical fibers, into monitor...
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6005350 |
Electroluminescent driving apparatus with photodetector
An EL driving apparatus is composed of a display portion, a photodiode as changing means for changing a reference voltage for controlling an increased voltage based on ambient brightness and a...
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6005243 |
Synchronous adjustment method, apparatus, and computer program product in a multiple beam optical system
A method, system and computer-based product adjusts a synchronous operation of beams in scanning direction of a multiple beam optical system. Alternatively emitted, a standard beam and one of...
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5985496 |
Exposure method and apparatus
An exposure apparatus for exposing a photomask pattern onto a photosensitive substrate via a plurality of optical systems includes a source of illumination for irradiating the photomask pattern...
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5986252 |
Laser monitor apparatus and a laser apparatus
In a laser beam processing apparatus, a laser monitor comprises a photo sensor, a laser power measuring circuit, an A-D converter, a monitor control unit, a comparison decision unit, a display...
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5977717 |
Logic lighting control system
A lighting control system comprises a photosensor (12), a comparative circuit (16) and a logic switching circuit (26). The photosensor (12) produces an output (VP) which is a function of the light...
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5977533 |
Pulse width modulated optical sensor interface circuit having an emitter control circuit
An apparatus for accurately positioning a leading edge of a label or detecting a notch in label stock, having, a photosensor with a light emitting element and a light receiving element, and an...
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5973771 |
Pupil imaging reticle for photo steppers
The invention relates to the evaluation of the pupil illumination profile in a projection lithography system using an imaging reticle featuring a plurality of holes of few microns in diameter. The...
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5969335 |
Laser control system for use in laser processing machine utilizing laser-induced plasma detecting system
In a laser processing machine, a laser control system includes a photo detector (21) detecting intensity of light generated by laser-induced plasma produced by applying laser beams on an object,...
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5965869 |
Method of leading in APC control and image forming apparatus using the same
In an APC control lead-in method in an image forming apparatus having a plurality of laser light sources, a laser beam emitted by at least one of the plurality of laser light sources is scanned by...
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5965868 |
Laser light quantity control device
A laser light quantity control device includes a semiconductor laser element having a plurality of light emitting portions and a light quantity detector for detecting light quantities of the...
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5962982 |
Remote positionable photocell device for use with an exterior landscape lighting assembly
A photocell device for use with an exterior landscape lighting assembly. The lighting assembly includes a transformer having an input line connected to an electrical power source. The transformer...
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5962841 |
Detecting mechanism having selectable sensitivity levels for detecting at least three levels of transmissivity
A detecting mechanism has a sensor for detecting different levels of transmissivity to provide an output signal representative of the transmissivity level detected. The detecting mechanism is...
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5959725 |
Large area energy beam intensity profiler
A large area energy beam intensity profiler and method of profiling are disclosed. The profiler includes intensity detectors which generate electrical signals corresponding to the intensity of the...
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5959655 |
Light beam scanning apparatus which controls power and spot shape of light beam
A light beam scanning apparatus in which laser power and spot shape of an emitted laser beam are controlled, has a laser control signal generating part for changing a picture signal to a laser...
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5939707 |
Circuit for lateral photoeffect position sensor
A circuit provides a normalized position signal in response to a position of an illuminated spot on a lateral effect photosensor. The photosensor provides a concurrent pair of analog signals. The...
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5929430 |
Coupled opto-electronic oscillator
A coupled opto-electronic oscillator that directly couples a laser oscillation with an electronic oscillation to simultaneously achieve a stable RF oscillation at a high frequency and ultra-short...
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5925887 |
Projection exposure apparatus including an optical characteristic detector for detecting a change in optical characteristic of a projection optical system and device manufacturing method using the same
A projection exposure apparatus including a projection optical system for projecting a pattern of a reticle onto a substrate, an optical characteristic detecting device for detecting a change in...
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5923427 |
Optical triangulation distance sensing system and method using a position sensitive detector and an automatic power controlled light source
A distance sensing system employs an optical triangulation system and a position sensitive device (PSD). The PSD generates a pair of current signals when a target reflects light from a light source...
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5917193 |
Method and apparatus for detecting leaks in a container
The invention concerns a method and device for checking tightness of containers, housings and similar test objects (15). The test object (15) is subjected to a pressurized test gas. If a leak (28)...
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5917179 |
Brillouin opto-electronic oscillators
Opto-electronic oscillators having at least one Brillouin feedback loop based on the Brillouin selective sideband amplification to provide a sufficient gain for the oscillator to start and sustain...
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5914484 |
Circuit for adjusting luminous energy of light-emitting element and optical device using same
Luminous energy of a light-emitting element in an optical device is adjusted to a desired level by a light adjusting circuit including a light-receiving element adapted to detect the level of...
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5912454 |
System and method for detecting a relative change in light intensity
A system having a sensor, a feedback loop comprising a controllable load and an integrator, and a comparator. The light filter is matched to the sensor to allow enough light to be sensed while...
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5910653 |
Shelf tag with ambient light detector
The present invention relates to an electronic shelf display device which includes an optical device and an ambient light detector circuitry. The electronic shelf display device includes an...
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5903247 |
Servo controlled liquid crystal windows
An apparatus for controlling the opacity of a liquid-crystal window, having a light emitter positioned adjacent to one side of the liquid-crystal window, a light detector positioned adjacent to the...
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5902994 |
Apparatus for calibrating a linear image sensor
Apparatus for calibrating a linear image sensor, includes a fluorescent light source, at least as long as the image sensor; a fixture for holding the light source parallel to the image sensor and...
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5902993 |
Image scanner for image inputting in computers, facsimiles word processor, and the like
It is an object of the invention to present an image scanner of high performance, high reliability, and low cost, capable of realizing high image quality of reading image and suited to small size,...
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