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7002771 |
Method and apparatus for sensing position of a tape head in a tape drive
A method for sensing position that comprises generating light, eclipsing the light according to position, sensing the amount of light not eclipsed, and inferring position according to the sensed...
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7003241 |
Image recording device and an image recording system
A multi-beam image recording device is capable of recording high-quality high-resolution images without positional errors by exposing test patterns for measuring positional errors of beam spots of...
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6999838 |
System and method for improving laser power and stabilization using high duty cycle radio frequency injection
A system and method of stabilizing laser output levels includes a laser ( 10 ), an injection circuit for injecting a radio frequency waveform, and a control circuit for energizing and stabilizing...
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6998594 |
Method for maintaining light characteristics from a multi-chip LED package
The present invention provides a method, system and structure for maintaining light characteristics from a multi-chip LED package. This may be done by selecting a desired light output and...
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6998603 |
Image forming apparatus, optical writing device, and controlling method thereof
An image forming apparatus is disclosed that is capable of making it simple to initialize a laser system thereof. The image forming apparatus includes a first photo detector that detects a part of...
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6992274 |
Laser processing method and apparatus
There is disclosed a laser processing method including moving a mask and a work with respect to each other while emitting a pulse laser a plurality of times, and moving the mask and the work with...
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6989520 |
Emission control apparatus with settable target intensity and image forming apparatus using same
There is provided an emission control apparatus with which it is capable of variably controlling the intensity of a light beam to be set, in a stable manner and at a low cost without increasing the...
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6987876 |
System and methods for determining the settings of multiple light sources in a vision system
Systems and methods where a lighting configuration of a vision system is determined using a controllable lighting system and at least one image evaluation tool. The lighting configuration is usable...
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6979953 |
Auto-operated dip switching mechanism
An auto-operated dip switching mechanism includes a strong-light detector, a strong-light signal circuit, and a switching control circuit. The strong-light detector is mounted to a front end of a...
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6974941 |
Method and apparatus for measuring performance of a lamp
A light source testing system includes a light source to form an image, an image capturing apparatus capturing the image by a plurality of pixels, and an image processing apparatus calculating a...
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6969843 |
Light standard for microscopy
The disclosed light standard system provides flat field illumination through the use of an integrating light chamber which is in communication with a microprocessor. The light chamber has at least...
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6969865 |
Systems and methods for detection and measurement of elements in a medium
Systems and associated methods are provided for improving detection and measurement of elements in a medium, particularly the measurement of gaseous bubbles in liquid medium, such as blood injected...
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6967320 |
Methods for maintaining laser performance at extreme temperatures
This disclosure concerns methods for calibrating optical emitters. For example, one calibration method is employed in connection with an optical transceiver that includes a laser. A range of...
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6963059 |
Method and system for optimizing illumination power and integration time in an optical sensing device
There is described an optical sensing device, a method for controlling operation of an optical sensing device comprising a light source for illuminating a surface portion with radiation, a...
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6956640 |
Light energy detecting apparatus for exposure condition control in semiconductor manufacturing apparatus
A light energy inspecting apparatus provides an optimum exposure condition in photolithographic apparatus by sensing the energy levels of light passing through the aperture of a diaphragm. The...
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6943332 |
Laser microscope and irradiating method
A laser microscope includes a pulse laser which generates irradiation light having a pulse string, a laser scanner which irradiates a specimen by scanning the irradiation light on the specimen, a...
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6943333 |
Light arrangement for vision system including a light controller with an external device
A lighting arrangement for use in vision systems and imaging applications. The arrangement illuminates the object to be imaged with a supplied light of a specified illumination. The intensity, hue,...
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6936805 |
Device and method for fixing an optical wavelength in a wavelength division multiplexing system
A filter device for transmitting an optical signal using multiple wavelengths is disclosed. The filter device includes a fixation unit fixed to a substrate, a rotation unit having a filter...
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6933486 |
Illumination management system
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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6933485 |
Stabilizing power and wavelength of output radiation from a stabilized radiation source in optical communications systems
A stabilized radiation source includes a distributed feedback laser, a back lens for coupling a portion of the output radiation into first and second optical paths, optical detectors for detecting...
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6934014 |
Device with at least one light source, comprising several individual light sources
A device with at least one light source, comprising several individual light sources ( 3, 3′ ) and an optical arrangement. At least two individual light sources ( 3, 3′ ) comprise a...
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6927377 |
Wavelength locking channel monitor
Prior art wavelength lockers used in tunable laser systems can provide information to ensure that the laser is locked onto a channel, but do not provide information as to which specific channel the...
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6927378 |
Apparatus and method for monitoring of cathode ray tube panel manufacturing to reduce CRT cost and improve performance and yield
A monitoring apparatus and method for measuring light output gradient of a faceplate panel includes a top plate having a center detector and a plurality of corner detectors mounted along a major...
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6919548 |
control system to automatically control vehicle headlamps
An automatic vehicle headlamp dimming system which includes an optical system and an imaging processing system. The optical system is configured to discriminate between headlamps and tail lamps,...
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6897424 |
Controlling a laser to stop output in accordance with detection of output lights corresponding to channels
A parallel optical module is constructed to include a plurality of photodetectors (MD 1 , MD 2 ) which detect output lights of a plurality of arbitrary channels of a laser light source ( 3 ) having...
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6897431 |
Method for measuring optoelectronic characteristics of organic light emitting diode
A method for measuring optoelectronic characterstics of an organic light emitting diode. A computer, a power supply and a cavity are provided. The cavity has a tooling, on which at least one...
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6891142 |
Photoelectric sensor unit including automatic control circuit for reducing fluctuation in light emission
A photoelectric sensor unit comprises a light emitting section for emitting light to a detection area, a light receiving section for receiving light from the detection area, and a signal processing...
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6880957 |
Lighting apparatus with electronic shadow compensation
An electronic lighting apparatus with at least one multiple position adjustable lighting pod. Each lighting pod includes at least one variable intensity light source and a proximity sensor for...
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6870148 |
LED with controlled capacitive discharge for photo sensing
A method and apparatus determining an intensity of light flux. First, a photodiode or LED is charged by reverse-biasing to a fixed voltage. The fixed voltage is a sum of a threshold voltage and a...
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6870147 |
Light stability testing device
A light stability testing device for conducting an accurate light stability test that permits an accurate ultraviolet irradiation and an accurate visible light irradiation, the device comprising an...
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6862137 |
Method for adjusting a lamp relative to an illuminating beam path of a microscope and a microscope suitable for carrying out the method
The invention relates to a method for automatic lamp adjustment in a microscope without beam homogenizers in the illuminating beam path and a microscope equipped for the application of the method....
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6855919 |
High-frequency current generating circuit and control device for controlling light intensity of laser diode
In a laser-driving device including a high-frequency current generating circuit generating a high-frequency current superimposed on a control current output from a light intensity control circuit...
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6828538 |
Illumination detection method for LED printbars
A system to monitor light emitting diodes (LEDs) in a printbar is described. The system integrates photodetectors into a printer or into the printbar itself such that as the printbar ages, the...
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6825930 |
Multispectral imaging system
The invention features a multi-spectral microscopy system for illuminating a sample with light of a selectable spectral content and generating an image of the sample in response to the...
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6825486 |
System for mapping wafers using predictive dynamic lighting
A wafer mapping system includes an imaging array, at least one lighting module and a controller coupled to the imaging array and the lighting module. The controller is adapted to receive...
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6822210 |
Data recording apparatus including light intensity control device
A data recording apparatus includes a laser diode applying light to a recording medium to record data, a front monitor diode detecting the intensity of light emitted from the laser diode, a switch...
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6818064 |
Photoresist dispense arrangement by compensation for substrate reflectivity
In the manufacture of a semiconductor device, an arrangement for forming a layer on a semiconductor substrate compensates for variations in wafer substrate reflectivity. The arrangement includes...
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6806485 |
Ambient light detector for off-the-glass rain sensor
An optical moisture detector for determining a value corresponding to ambient light conditions and comparing that value to a predetermined value. The detector includes an optical moisture sensor...
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6801598 |
Radiation sensing apparatus
A radiation sensing apparatus which includes a sensing unit for sensing a subject image to be obtained by irradiating a radiation from a radiation source to a subject, the sensing unit being...
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6787748 |
High speed sampling circuit
A light intensity control apparatus for use in an information recording and reading system includes a light source driving device for driving a light source so as to generate a light having the...
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6784410 |
Image input system, image input apparatus, image input method, program, and storage medium
It is an object of this invention to provide an image input system, image input apparatus, and image input method which can greatly reduce the time before actual image reading is started, and which...
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6781105 |
Optical information recording employing improved recording power control scheme
A disk apparatus performs optical recording onto an optical disk with a record mark by using a light beam modulated in a manner of multi-pulse series, includes. A detection pulse generating part...
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6774348 |
Method and apparatus for monitoring the power of a multi-wavelength optical signal
Methods and apparatus for monitoring the power level of a multi-wavelength optical signal are provided. Also provided are methods and apparatus for adjusting the power level of selected optical...
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6765224 |
Machine vision method and system for the inspection of a material
A machine vision method and system for inspecting a material. The system comprises a light source arranged to illuminate the material and an imaging device configured to acquire image data...
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6758607 |
Optical communication module and optical communication module product
A package contains therein a semiconductor laser element for emitting light and a semiconductor circuit element for driving the semiconductor laser element and is provided with an optical fiber...
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6756601 |
High speed optocoupler
Apparatus and method for increasing the bandwidth of an optocoupler includes cascode coupling the optocoupler driver transistor with a buffer so as to reduce voltage variations across the driver...
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6744034 |
Micro-electromechanical apparatus and method with position sensor compensation
Micro-electromechanical apparatus and method with position sensor compensation to compensate for sensor drift. A preferred embodiment comprises modifying the intensity of a light source used in...
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6737628 |
Method for adjusting illumination parameters of a laser imagesetter
A method for adjusting variable illumination parameters of a laser imagesetter including laser power, focus adjustment, scan rate, and/or feed rate during the illumination of a photosensitive...
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6737630 |
Low EMI multiplexed dual display
A mirror assembly having an electrically adjustably reflectivity provides for the simultaneous display of a vehicle heading and an external temperature. The mirror assembly includes a reflective...
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6734411 |
Method and apparatus for controlling power levels of optical signals in optical fiber interconnects
In the method and apparatus for providing an optical fiber interconnect, a transmitter transmits an optical signal through an optical fiber. The transmitter does not transmit to a controller,...
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