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7412159 |
Image pickup apparatus and defocus amount correction value calculation method
An image pickup apparatus, in which a light is projected toward a physical object by projection means, and based on the reflected light by the physical object of the light, a defocus amount is...
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7324218 |
Method and device for distance measurement
The present invention relates to a device ( 10 ) for distance measurement, with at least one transmitting branch ( 14 ) with a transmission source ( 22, 24 ) for a measurement signal for emitting a...
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7130027 |
Reflection-photometric analytical system
This invention generally relates to a reflection-photometric analytical system having a measuring head comprising a source of radiation and a radiation detector for the reflection-photometric...
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6897421 |
Optical inspection system having an internal rangefinder
An optical inspection system comprises an optical system for providing an image of an object being inspected. The optical system comprises a plurality of lenses arranged along a normal optical...
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6897422 |
Measuring configuration and method for measuring a critical dimension of at least one feature on a semiconductor wafer
A scanning electron microscope is integrated in a common measuring configuration with at least one device for the angle-dependent measuring of the scattering or diffraction of light. This measuring...
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6850325 |
Temperature compensated optical system based on a diffractive optical element
The present invention relates to an apparatus for the determination of a condition or state of an object based on quasi-elastic interaction between the object and light transmitted to the object,...
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6844562 |
Distance measuring sensor and method for manufacturing the same
A distance measuring sensor includes a case subassembly having inside a light emitting element and a light receiving element, and a lens case subassembly having a projection lens projecting a light...
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6833909 |
Device for optical distance measurement of distance over a large measuring range
The invention relates to a device for optical distance measurement, having a emitter unit ( 12 ) having a light source ( 17, 18 ) emitting modulated optical beam ( 13, 20, 22 ) to a target object (...
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6812479 |
Sample positioning method for surface optical diagnostics using video imaging
Disclosed is a position system and method for correcting the position of a workpiece during a manufacturing process. The system includes a light generating means for projecting a light beam onto...
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6768540 |
Phase difference detection method, phase difference detection apparatus, range finding apparatus and imaging apparatus
A phase difference detection apparatus for detecting a phase difference between images formed on a pair of optical sensor arrays in which the possibility of unproductive compensation is reduced by...
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6763140 |
Method and apparatus for focusing a micro-imaging system onto a tilted or uneven sample to acquire images of the sample
A mesh is created from selected focus points having locations on a surface of interest of a sample being micro-imaged. The mesh and associated focus settings of the focus points are used to define...
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6697146 |
Range finder for finding range by image realization
A range-finder, capable of finding a range by image realization, having two distantly arranged imaging devices. The first pattern having a predetermined size and the first positional information is...
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6472652 |
Distance measuring apparatus
Reflected light of each light beam projected toward an object at a distance to be measured is detected to provide a far signal and a near signal, and the far signal is compared with a preset clamp...
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6433858 |
Autofocusing apparatus of a sighting telescope
An autofocusing apparatus of a telescope for automatically focusing on an object viewed within a field of view of the telescope through a distance-measuring zone arranged in the field of view,...
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6433857 |
Optical traingulation displacement sensor using a diffraction grating
Disclosed herewith is an optical triangulation displacement sensor using a diffraction grating. The optical triangulation displacement sensor includes a light source element, a condenser, a...
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6295124 |
Rangefinder apparatus
In the rangefinder apparatus in accordance with the present invention, an infrared emitting diode (IRED) having four light-emitting areas projects a first correction beam when only a first...
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6122039 |
Method and apparatus to detect and report object displacement utilizing optical triangulation principles
A object displacement measuring system and utilizing optical triangulation techniques is constructed to determine the displacement of an object between a near and far sensing limits. In...
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6104476 |
Distance measuring apparatus and computer readable storage medium
A distance measuring apparatus having skimming function which suppresses electric consumption when a charge storing period is shortened by an electronic shutter function. For this purpose, at an...
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6084658 |
Distance measuring apparatus
A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed...
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6046795 |
Distance measuring instrument
A measuring instrument is formed of an image pickup device having a pair of image-forming lenses and photosensor arrays; and an arithmetic device using two images of a measured object photographed...
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5999249 |
Position detecting element and range sensor
A position detecting element that enables a position to be detected at high speed and high precision, and a range sensor using the same. The position detecting element is provided with a PIN...
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5969820 |
Surface position detecting system and exposure apparatus using the same
A surface position detecting system for detecting a position of a surface of an object disposed opposed to an exposure system, with respect to a direction of an optical system of the exposure...
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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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5939705 |
Image information detection system and optical equipment using the system
The difference in brightness between the brightest area and the darkest area of the object of distance measurement can be speedily detected, as described above, and it can be determined before...
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5920382 |
Distance-measuring apparatus
A distance-measuring apparatus includes light-sensitive devices formed of optical sensor arrays disposed on image-forming surfaces of right and left image-forming lenses, respectively. The...
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5905567 |
Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device
An apparatus for optimizing sub-pixel resolution in a triangulation based target distance measuring device at a desired stand-off distance has a laser light source projecting a light beam along a...
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5905576 |
Optical displacement measurement device and optical displacement measurement system
A laser diode 11 irradiates an object 3 with beam light modulated in an appropriate cycle. A position detection element 21 outputs a pair of position signals responsive to the position of a light...
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5900611 |
Laser scanner with integral distance measurement system
The present invention relates to a scanner for reading coded symbologies. The invention uses a coherent, visible light source for illuminating the coded symbol during a scan and a detecting means...
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5883379 |
Device and method capable of converting a position signal into a frequency signal using a photoelectric position sensitive detector
A device and method capable of converting a position signal into a frequency signal using a photoelectric position sensitive detector is provided. The device capable of converting a position signal...
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5870178 |
Distance measuring apparatus
Disclosed is a distance measuring apparatus for measuring the distance to an object on the basis of reflected light obtained as a result of projecting light onto an object, in which different...
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5814808 |
Optical displacement measuring system using a triangulation including a processing of position signals in a time sharing manner
An optical displacement measuring system using a triangulation comprises a light projecting unit for emitting to an object a light beam which is amplitude-modulated by a reference signal having a...
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5808726 |
Distance measurement apparatus
This invention has as its object to provide a distance measurement apparatus which can relatively easily control the clock generation timing and can prevent dark currents generated by accumulation...
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5806020 |
Laser based speed and accident reconstruction measuring apparatus and method
An apparatus is disclosed for determining, in a first speed mode of operation, speed and range of a moving object and, in a second survey mode of operation, determining direct distances to an...
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5751406 |
Range finding apparatus
A range finding apparatus includes; M photoprojectors (M: greater than one) provided in one-to-one correspondence with M range-finding axes radially extending within a virtual plane for forwardly...
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5742524 |
Distance measuring device
In order to improve the accuracy and reliability of a distance measurement device of the light-projecting type, the device is provided with a reference voltage generator for generating a reference...
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5739912 |
Object profile measuring method and apparatus
A method and apparatus for object profiling is disclosed wherein a laser beam generated by a laser diode 102 is directed to the object surface 101, the apparatus scans the surface 101 and receives...
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5719663 |
Range finder apparatus
An active type range finder apparatus comprises a light projecting element having a base, a lead frame disposed on the base, at least one light emitting member disposed on the lead frame for...
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5696705 |
System and method for reconstruction of the position of objects utilizing a signal transmitting and receiving distance determining device
A system and method for data entry and retroactive reconstruction of the relative position of features and objects, in particular with respect to scenes such as transitory occurrences, utilizing a...
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RE35652 |
Object distance detecting apparatus
An object distance detecting apparatus having a light projecting device for projecting a pulse light toward an object to be photographed and a primary semiconductor position detecting device for...
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5644385 |
Distance measuring device using position sensitive light detector
A distance measuring device includes a light emitting element which emits light toward an object to be distance measured. A distance to the object is computed based on photo-currents outputted from...
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5640005 |
Active trigonometrical distance measuring apparatus with delay circuits
An inexpensive and easily adjustable distance measuring apparatus judges whether an object is located at a far distance or at a near distance relative to a certain set distance. The distance...
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5596386 |
Projection and reception type focus detecting apparatus
A projection and reception type focus detecting apparatus, which is capable of making the range measurement in plural regions, includes a light source for illuminating an object with a beam of...
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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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5572012 |
Distance measuring device for camera using integration of reflected light
A distance measuring device for a camera projects a pulsed light beam toward a subject and converts the reflected light from the subject to a voltage which is integrated by an integrating circuit....
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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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5550628 |
Distance measuring device
A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed...
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5534991 |
Active distance measuring apparatus
An active type distance measuring apparatus is provided with sensors for a plurality of distance measuring fields, and, in performing multi-point distance measuring, obtains distance information in...
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5496994 |
Range detection optical system with light emitter behind projection lens focal point and light receiver behind receiving lens focal point
Provided is an active range detection optical system which can measure a distance with high accuracy independent of the position of an object over the far-to-near range. The range detection optical...
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5483336 |
Self correcting stereoscopic auto-rangefinder
A stereoscopic rangefinder is disclosed for determining the distance of a target object by measuring the angle of parallax of light scattered by the target. The rangefinder includes two arrays of...
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5471050 |
Photoelectric conversion method and apparatus thereof
In the photoelectric conversion method and apparatus applicable to displacement sensors irradiating light to objects and sensing the distances to the objects, distance-determining type...
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