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5698841 |
Optical apparatus having a focus detecting device with decentration position detection
An optical apparatus provided with a light receiving device for receiving light distributions from light beams passed through different portions of a pupil of a main imaging lens, a focus state...
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5679946 |
Photo-taking lens temperature compensation system
A system that is mounted in a camera capable of focal point detection and that performs correction of the focal point detection data in accordance with the temperature, wherein the temperature...
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5675140 |
Autofocus control device with a light source
An optical positioning device using astigmatic optical elements. A laser diode emits astigmatic, elliptically shaped light which is not corrected. A first lens condenses the light and transmits the...
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5675141 |
Method and apparatus for automatically detecting focusing point and image processing method and apparatus using the same
A second object is disposed so that the image of the second object is formed within a picture area obtained by picking up an image of a first object, formed by a microscope, by an area sensor but...
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5670773 |
Process for the space localization of the focal point of a laser beam of a machining machine and equipment for performing this process
In order to localize in space a focal point of a laser beam (14) of a machining machine with respect to a work table (18) thereof, the table is fixed an equipment (22) comprising a square target...
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5663555 |
Photo-electric converter with parallel connection elements and dual signal read out means
An image information processing apparatus comprising a parallel connection circuit for parallelly connecting a plurality of photo-electric conversion elements, a combined signal read circuit for...
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5663554 |
Weak lens focus adjusting mechanism based upon thickness of scanned material and imagesetter using same
An adjustable focusing apparatus in a scanning device is used in imagesetters, scanners, and platemaking devices to focus a scanning beam on an element to be scanned. Precise focusing is achieved...
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5661548 |
Projection exposure method and apparatus including a changing system for changing the reference image-formation position used to generate a focus signal
In a stage slit type focus position detecting system, an opening pattern unit (11A) on a reticle (10) is illuminated with exposure light (IL1) from a light source system (1), and light passing...
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5655838 |
Radiation thermometer with a focusing system
A radiation thermometer assembly comprises a housing to a front end of which is movably mounted an objective lens housing. An eye piece is mounted to the radiation thermometer housing and is...
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5642201 |
Electrographic copying machine
An electrographic copying machine in which an image projected on an original glass stand by a film projector is read out by a scanner and copied is provided with a color scanner including a CCD for...
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5640240 |
Probe for surface measurement
A surface-measuring apparatus comprising a probe and means for moving the probe towards and away from a surface under examination and for monitoring such movement, the probe comprising a plurality...
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5619031 |
Variable magnification apparatus for reticle projection system
A magnifying lens system is fixed to the lower end of a vertically adjustable support plate to overlie a workpiece, and to project an image thereof upwardly through a beamsplitter to the image...
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5589940 |
Apparatus for measuring the curvature of a surface using moveable reflecting and focusing elements
A curvature measuring device (10) for measuring the curvature of an object (14) without contacting object (14) includes a moveable frame (20) and a reflector (28) for reflecting light incident...
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5587846 |
Lens moving apparatus
A lens holding frame holding a lens in a lens barrel is arranged, and a contact member extending therebelow is in friction coupling with a driving axis. By applying driving pulses having such a...
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5578812 |
Camera having superimposed information display device
There is disclosed a focus detecting device adapted for use in a camera or the like and provided with; a phototaking optical system for forming an image of the object on a reference plane; a focus...
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5574555 |
Lens inspection method and apparatus
A lens inspection device has an objective lens composed by front and rear lenses, a two-dimensional image sensor and an image forming lens for forming a point image of light passing through the...
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5572011 |
Focus detecting method and distance measuring method with a plurality of light fluxes and a contrast operation
In an image pick-up device including an image forming lens, a focal condition of the image forming lens is detected by means of a focus detecting optical system including a condenser lens arranged...
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5570181 |
Method of detecting impurities in molten resin utilizing scattering light and the shadows of the impurities
A method of detecting impurities in a molten resin. The molten resin is massed through a passage having a window through which light can pass. Light is emitted from a light source through the...
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5570433 |
Apparatus and method for defocusing images
The present invention discloses an image defocusing apparatus for defocusing an image formed on a screen by modeling an object in a boundary box by updating pixel values on the image to approximate...
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5561289 |
Device for detecting line of sight
In a device for detecting the line of sight of the observer, when the detection of the line of sight is identified as having failed, the detection is effected again with a variation in the output...
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5528330 |
Focus detecting apparatus
A focus detecting apparatus comprises charge accumulation type photoelectric converting devices provided correspondingly to at least three focus detection areas set in a photographing image field...
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5521374 |
Focused laser beam measurement system and method of beam location
A laser beam measurement device comprises a pinhole aperture spaced to one side of a power meter for measuring the power level of the laser beam. The positioning system of the laser system causes...
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5521695 |
Range estimation apparatus and method
A range or distance estimating apparatus and method estimates the range to various points within a scene by imaging the scene through an optical mask and a lens onto a CCD, and then digitally...
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5502313 |
Exposure apparatus and method having a measuring unit for measuring distances between a mask surface and a projection optical system
An exposure apparatus includes a projection optical system for projecting a pattern on a mask onto a photosensitive substrate and a measuring unit for measuring distances between the mask and the...
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5448295 |
Video camera
A video camera having an imaging device providing a video signal comprises; lens means for focusing an object leading to the imaging device, signal processor or processing outputs of the imaging...
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5448051 |
Automatic focusing apparatus for moving objects
An automatic focusing apparatus comprises an object speed calculating device for calculating a moving speed of object image plane, based on a defocus amount detected by a focus detecting device and...
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5442397 |
Image sensing apparatus
An image sensing apparatus operating with adaptive selection of a first tracing algorithm in which an object image is traced by moving a detecting area capable of being movably set on an image...
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5442167 |
Method and apparatus for automatic image focusing
An apparatus and method is presented wherein the lens system or assembly is fixed in its location along an optical axis between an object and its image. The focusing of the object, which may vary...
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5410420 |
Drum scanner focusing system
A focusing system for the optical head of a rotary drum scanner establishes focus quickly and automatically by iteratively scanning a line of a document on the drum and repeatedly adjusting the...
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5408083 |
Method of measuring the best focus position having a plurality of measuring mark images and a plurality of focus positions
Disclosed is a method of calculating the best focus position of a projection optical system by arranging a photosensitive substrate in the best focus position of a projection optical system,...
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5404013 |
Infrared imaging system having an automatic focusing control
An infrared imaging system comprises an optical system for forming an image of a target on an infrared detection array and an automatic focusing mechanism, wherein an output image signal of the...
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5396057 |
Method for optimum focusing of electro-optical sensors for testing purposes with a haar matrix transform
A method of optimizing the optical focus of an electro-optical sensor in preparation for accurately measuring an optical parameter thereof of the type including, but not limited to, dynamic range,...
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5391866 |
Position recovery apparatus for inner focus lens
A feed screw (3) is coupled to a stepping motor (2) and a moving member (4) is provided along the feed screw (3). The moving member (4) includes a rack (7) that is meshed with the feed screw (3)....
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5388907 |
Measuring apparatus provided with an automatic focussing device
A radiation thermometer includes a temperature sensor for detecting an intensity of infrared radiation of light, a measuring optical system for introducing light from an object to the temperature...
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5376804 |
Optical analysis system and positioning apparatus thereof
An optical analysis or processing system for use, for example, in the analysis of microscopic spots of material by their effect on a very fine polarized beam of light (e.g., FPIA). For multiple...
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5362958 |
Reading apparatus with position calculation and focus adjustment and curved surface adjustment
In an image reading apparatus, a spot-light position calculator calculates a distance between a document original and a solid state imaging device using the output signals of a light sensing...
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5359383 |
Automatic focusing system with phase difference detecting unit employing correlation operating circuit
A phase difference detection unit for an automatic focusing system of a camera or the like. The phase difference detecting unit includes a pair of linear image pickup devices which receive a pair...
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5329109 |
Photoelectric converting device having a plurality of monitoring means for detecting point of focus with high precision for focusing area lying over a plurality of blocks
A photoelectric converting device includes plurality of charge storage type photoelectric converting elements which are divided into a plurality of groups. A plurality of monitoring sections are...
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5327070 |
Power supply circuit for driving a light emitting element
In a step-up circuit for causing the emission of light of a distance measuring light emitting element, the step-up circuit outputs a step-up voltage from one terminal of a step-up capacitor. A...
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5311354 |
Telescope
In a telescope according to the present invention, defocus amount of an optical system constituting the telescope is calculated; whether or not the defocus amount is within a predetermined in-focus...
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5301066 |
Lens barrel
A lens barrel of the present invention directly detects the lens-to-lens spacing between a focusing lens and another lens, whose position relative to the focusing lens exerts the largest influence...
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5286963 |
Projection exposure apparatus and method, a semiconductor device manufacturing system and method, and a semiconductor device manufactured by illuminating an original having a circuit pattern when the original and a wafer are in a focused state
A projection exposure method and apparatus, in which high precision focus detection is assured even when the manner of illumination is changed. The projection exposure apparatus includes an...
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5286964 |
System for detecting, correcting and measuring depth movement of a target
A system and method for detecting, measuring and correcting for movements of a target in a medical analytic or surgical system utilizes generally the principles of confocal microscopy. A pinhole...
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5283681 |
Scanning optical equipment
A scanning optical equipment provided with the means to detect scanning beam spot at more than two points of the scanned surface and the means to enable direct observation of the state of focussing...
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5281796 |
Lens unit wherein focal lens movement is selectively inhibited during zooming
An optical equipment comprises: a first lens for focusing and compensation for magnification variation; a second lens for magnification variation; position detection means for detecting positions...
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5274223 |
Vari-focal lens control system with lens driving and magnification lens driving means
A control system for vari-focal lens can keep a vari-focal lens in focus during magnification change, and can conduct quick focusing even if a distance measurement is not possible in a phase...
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5266790 |
Focusing technique suitable for use with an unpatterned specular substrate
A microlithographic stepper, employing a Half-Field Dyson projection optical system, achieves focusing of an image of a first-layer reticle pattern on a completely unpatterned reflective wafer...
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5245172 |
Voice coil focusing system having an image receptor mounted on a pivotally-rotatable frame
An apparatus for focusing an image onto an image receptor is disclosed. The apparatus includes a stationary lens, a rotatable frame that is rigidly connected to the image receptor, and a base. The...
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5243375 |
Automatic focus adjusting device for adjusting the focus of the main object to be photographed
An automatic focus adjusting device detects focus condition respectively of a plurality of areas of a scene to be photographed to calculate respective focus adjusting data, and automatically...
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5235458 |
Binocular
A binocular comprising a housing and a pair of first and second optical systems positioned on each side of a central line. Each optical system includes an object lens and ocular lens arranged at a...
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