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7586079 Low power glare sensor  
The invention may be embodied as a glare detection system or as a method of detecting glare. In a system according to the invention, there may be a light receiving surface, a first input channel, a...
7045974 LED optical energy detection and feedback system  
A system for the throughput detection and feedback of optical energy for making sure of white balance of the LED array in a flat fluorescent light source when the LED array in emitting light by...
6974940 Anti-glare rearview mirror assembly and reflectance control method of same  
An anti-glare rearview mirror assembly and a reflectance control method thereof are disclosed. The assembly includes an electrochromic rearview mirrors, two rearward light sensors, and a...
6875971 Wafer edge exposure apparatus, and wafer edge exposure method  
A wafer edge exposure apparatus is provided with an optical section for radiating exposure light onto the edge of a semiconductor wafer. The optical section is provided with a focus sensor for...
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...
6831262 Method of determining characteristic correction data for correcting output signal from image sensor  
There is disclosed a method of determining characteristic correction data from reference data values picked up through an image sensor by scanning a reference original a plurality of times per one...
6665097 Image reading apparatus  
When sequentially reading a plurality of documents in an image reading apparatus using, for example, an automatic document feeder, the temperature inside the apparatus rises and the refractive...
6525303 Control systems and methods for synchronizing diffuse illumination with a camera  
A light pattern controller generates a pattern of continuous wave, modulated and/or pulsed light onto a face of a collimating element. The light beam is collimated by the collimating element and...
6350977 Pattern distortion detecting method and apparatus and recording medium for pattern distortion detection  
Sampling points are generated selectively in a prescribed portion other than the pattern edge portion of a layout pattern used in a semiconductor manufacturing process based on an input that is...
6008484 Observer tracking directional display and observer tracking illumination system  
Observer tracking is provided in an autostereoscopic 3D display, for instance of the type including an LCD panel 2 behind a parallax barrier. An infrared sensor such as a position sensitive...
5710662 Automatic focus detection device for microscopes  
An automatic focus detection device for microscopes includes an optical system for forming an image of a sample; an image sensor for photoelectrically converting an optical image derived from the...
5672862 Optical apparatus having image shake preventing function  
An optical apparatus or a control device to be used for a light flux deflecting apparatus is arranged to include at least two light flux deflecting portions and a control portion which control the...
5652424 Focus state detection device and method  
A focus state detection device includes a field mask aperture having a shape created from the overlapping portions of two areas. The first area is formed by the outermost perimeter of the...
5552594 Focus detecting system using a beam splitter to form an image at nominal best focus, slightly in front of best focus and slightly behind best focus  
A focus detecting system for detecting focus state of an image forming optical system relative to an object, includes a beam splitter assembly for forming at least three coplanar two-dimensional...
5506399 Focus detection device  
A focus detection device is provided that can quickly detect small displacements with high precision in the optical image on arrays of photosensitive elements. The device includes a pair of arrays...
5420438 Focus detecting apparatus including movement of detecting zones  
A focus detecting apparatus is provided including an image reforming optical system which splits a bundle of rays incident upon a detecting zone, which is provided on a predetermined focal surface,...
5276550 Optical microscope with variable magnification  
An optical microscope including a revolver for mounting a plurality of objective lenses having different magnifications, a stage for holding a specimen to be inspected and being movable in a plane...
5233431 Image pickup device  
An image pickup device which, in placing a phase type optical low pass filter in front of a taking lens, is able to cope with the varying focal distances of the taking lens only by a single piece...
4989827 Distance distribution measuring method and apparatus varying spacing between an image pickup and the optical axis  
A distance distribution measuring method includes the steps of disposing an image pickup on the optic axis of a projection optical system, forming on the image pickup the images of objects existing...
4988856 Automatic focusing apparatus of a camera for photographing moving objects  
An automatic focusing apparatus of a camera according to the present invention includes: a focus detector which detects repeatedly focus conditions of a photographic lens and outputs successively...
4972243 Photoelectric conversion apparatus with shielded cell  
A photoelectric conversion apparatus has a plurality of photoelectric conversion cells. Each cell includes a semiconductor transistor having a control electrode area which in turn includes a...
4965443 Focus detection apparatus using neural network means  
An optical image transmitted through a photographing lens is incident on a light-receiving unit of a two-dimensional matrix. An output from the light-receiving unit is input to a first arithmetic...
4942418 Focus condition detecting device  
An automatic focusing divice for a camera is disclosed. The automatic focusing device has sensing means for sensing light intensity distributions within narrow and wide areas of a field of view of...
4939357 Optical system for a focal point detecting device  
A condenser lens disposed behind a film equivalent plane, a pair of light splitting elements disposed behind the condenser lens, and a focal point detecting apparatus. The radius of curvature of a...
4914282 Focus detection system employing multiple area light distribution sensors  
A focus detection system for detecting a focus state of an object lens, includes an optical device for forming first and second light distributions corresponding to first and second images having...
4912497 Device for detecting the focal value for the focusing of optical apparatus  
A device for detecting the focal deviation value for focusing an optical apparatus includes a pair of optical lenses for receiving light from the focal object, which produces a pair of images that...
4904855 Method for detecting relative position of an image pair including contrast detection  
A method and system for finding an exact focus of a taking lens of a single lens camera or the like. The method detects the relative position between two images on the basis of light intensity...
4900911 Focus detecting system utilizing correction data on aberrations of the photographic lens  
A focus detecting system having a passive type automatic focusing function and an active type automatic focusing function. When the passive type automatic focusing function is used, focus detection...
4899041 Light sensor for detecting an object in a certain distance  
The light sensor has a light transmitter (10, 12) which radiates the light along an axis (x 0 ) of a transmitter system and two light receiving systems (12, 14) which pick up the light scattered...
4888490 Optical proximity apparatus and method using light sources being modulated at different frequencies  
Optical proximity apparatus, and a related method, for monitoring the proximity and angular orientation of a surface and for maintaining that surface in a desired relative position. The apparatus...
4883951 Method and system for detecting whether an optical system is in focus using an improved interpolation technique  
In a focus detection system in which light from an object is incident on at least two photosensor arrays via an optical system to form two images on the photosensor arrays, the relative...
4870263 Device for determining the contrast of a display screen as a function of the observation direction  
A device for determining the contrast of a display screen as a function of the observation direction. This device comprises a first convergent objective (12) for forming the image (19) of the...
4864117 Device with a discriminating priority system  
In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one diection to...
4862204 Focus detection device and method  
A focus detection device which repeatedly calculates correlations between first and second image signals representing light intensity distributions on first and second image sensor arrays by...
4859842 Multi-directional focus state detection apparatus  
A focus detection apparatus includes: a first optical device for forming light distributions, associated with an object image, whose relative positional relationship chnages along a first...
4857717 Automatic focusing device using a light sensor of center-split type  
An automatic focusing device for use in a video camera comprises a first and a second light-receiving element, a first and a second integration circuit integrating output signals of the first and...
4849782 Focus detecting device  
A focus detecting device having a field lens disposed near the predetermined imaging plane of an objective and a secondary imaging optical system disposed rearwardly of the field lens, whereby a...
4833315 Automatic focus detecting device in which two object images formed through different light paths are converted to photoelectric signals  
Method and apparatus for detecting a focus condition of an optical system forms two images of an object, the images propagating along two different optical paths. The two images are received with a...
4833313 Focus detecting apparatus having increased SNR by selectively varying or holding constant the number of signals from sensor arrays  
An apparatus for detecting the focus state of an optical system has optical apparatus for forming first and second light distributions of an object. The relative positional relationship of the...
4829332 Focus detecting optical system  
An optical system for use in a focus detecting apparatus has a photographing lens for forming an image of an object, a condenser lens disposed behind, with respect to the photographic lens, a plane...
4829170 Digital focus detecting device  
In a focus detection system for detecting the focus condition of an objective lens, there is disposed a pair of photosensor arrays for generating a plurality of image signals. The peak signal of...
4818865 Focus detecting system for camera utilizing correction data on the aberration of the photographic lens  
A focus detecting system having a passive type automatic focusing apparatus and an active type automatic focusing apparatus. When the passive type automatic focusing apparatus is used, focus...
4812869 Focus detecting apparatus  
First and second light distributions having their relative positional relation varying in conformity with the focus adjusted state of an objective optical system and based on an object are received...
4812640 Slit lens autofocus system  
An autofocus system employing a slave lens which is so shaped or configured as to produce a strip of radiation on a pair of detectors used in the autofocus system thus enabling an attractive and...
4810869 Automatic focusing control method for microscope  
An automatic focusing control method for microscope includes preliminarily determining and storing respective in-focus positions of an objective lens of the microscope for a plurality of points on...
4806746 Apparatus and process for focussing of an optical display system  
Process and apparatus for focussing of an optical display system in which the total of the light intensities for all the adjacent picture elements is added up and in passing through the focus area...
4805992 Astigmatism generator  
An astigmatism generator such as may be used in the pickup of an optical disk player which produces substantially no other aberrations yet which can be manufactured at a low cost. The astigmatism...
4801794 Data detection and optical focus error detection system for rotating optical media  
A magneto-optic optical disc system which uses the magneto-optic differential data detection channel, with addition only a low pass filter, to also detect focus error. The differential data...
4800410 Focus detecting apparatus for selecting the operating process in conformity with the contrast of an object  
A focus detecting apparatus in which light distributions having their relative positional relation varying in conformity with the focus adjusted state of an objective optical system and based on an...
4800261 Apparatus for detecting focusing state of objective lens  
Light intensity distributions of object images whose relative positions vary with a focusing state of an objective lens are formed by a lens assembly based on light fluxes transmitted through the...
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