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9020202 Method for finding distance information from a linear sensor array  
A method for determining a position using digital pixel data includes receiving pixel data from a position sensor device at a controller, sorting the received pixel data into pixel banks using the...
8941818 Optical rangefinder and imaging apparatus with chiral optical arrangement  
An optical rangefinder having a photosensor adapted to transform the image projected thereon into an electronic image, an imaging system for projecting an image of an object on the photosensor, an...
8928874 Method for identifying abnormal spectral profiles measured by a chromatic confocal range sensor  
A method for operating a chromatic range sensor (CRS) system to identify abnormal spectral profiles arising from light reflected from more than one portion of a workpiece surface is provided. The...
8792006 Method and system for detecting error of auto focus calibration  
Provided is a method and a system for detecting an error focus calibration, wherein a first DFOV value is measured in a state before the collimator lens is interposed between the resolution chart...
8773645 Distance measuring device and imaging device  
A distance measuring device including a polarizing element disposed on a plane conjugate with a pupil of an objective lens, an optical rotatory plate rotating a polarizing axis of light which has...
8717432 Geographical data collecting device  
The present invention provides a geographical data collecting device, which comprises a distance measuring unit 5 for projecting a distance measuring light and for measuring a distance to an...
8507834 System and method for autofocusing an optical system through image spectral analysis  
A system and method of autofocusing an optical system uses transforms of images or portions of images formed by the optical system. A detector is used to capture images at different positions...
8351120 Optical device having extented depth of field and fabrication method thereof  
A method for designing an optical device which includes a lens and a microlens array is disclosed. A point spread function (PSF) of the lens including rotationally symmetrical aberration...
8305485 Digital camera with coded aperture rangefinder  
Method of using an image capture device to identify range information for objects in a scene includes providing an image capture device at least one image sensor, a coded aperture, a first optical...
8212997 Chromatic confocal point sensor optical pen with extended measuring range  
A chromatic confocal point sensor optical pen comprises a multi-stage optical configuration providing an enhanced range-to-resolution ratio. The optical configuration comprises at least first and...
8134691 Lens configuration for a thermally compensated chromatic confocal point sensor  
A chromatically dispersive lens configuration including thermal compensation may be utilized in chromatic confocal point sensor optical pens for chromatic range sensing. The lens configuration may...
7990522 Dynamic compensation of chromatic point sensor intensity profile data selection  
In a chromatic point sensor, distance measurements are based on a distance-indicating subset of intensity profile data, which is selected in a manner that varies with a determined peak position...
7813529 Optical 3-d surface tomography using depth from focus of partially overlapping 2-d images  
A system and method of reconstructing a three-dimensional image of an object is provided. The system includes a single camera including a pinhole lens and having a surface defining an image plane....
7812932 Universal laser range evaluation and verification system  
A test station for testing a laser range finder is disclosed. The test station may be a mobile test station. The test station may include an optical system having a first portion which aligns an...
7700903 Method and apparatus for the auto-focussing infinity corrected microscopes  
The invention is directed at a method and apparatus for auto-focusing an infinity corrected microscope. Light beams are directed and then converged towards a specimen of interest and at least one...
7589825 Ranging apparatus  
This invention relates to a ranging apparatus capable of ranging simultaneously to a three dimensional scene. An illumination means (22) illuminates a scene with a two dimensional array of spots...
7535554 Displacement measuring method, displacement measuring instrument, displacement measuring target and civil structure  
A target having a reflective part for a laser beam is located at the measuring object position of a bridge girder in such a way that the reflective part includes with respect to the displacement...
7484854 Projector and pattern image display method  
An appropriate adjustment can be made on the basis of a gradation amplitude obtained from a photographing image even when the zoom position of a zoom lens is changed. According to exemplary...
7477400 Range and speed finder  
A range/speed finder can be incorporated into a personal electronic device. In one example, a personal electronic device includes an automatic focus system adapted to focus an image of an object...
7421195 Apparatus for acquiring focussing information and method of acquiring focusing information  
A storage unit is configured to store beforehand a table that shows a relation between spread parameters and command values supplied to a control unit to acquire a focused image of an object, and...
7327441 Distance measuring system  
A distance measuring system, comprising a laser light source for projecting a pulsed laser beam to an object to be measured, a photodetection element for receiving an external light reflected by...
7307699 Light wave distance measuring method and light wave distance measuring system  
A light wave distance measuring method, using a light wave distance measuring system with a focusing function, comprising a step of comparing a reference distance to an object to be measured...
7230685 Apparatus, method, and program for generating range-image-data  
First image data including a first pixel value according to the intensity of background light is obtained by means of only exposure. Second image data including a second pixel value according to...
7206062 Readout integrated circuit (ROIC) for laser detection and ranging (LADAR) system and method for using same  
Disclosed is a LADAR system and a method for operating same. The LADAR system includes circuitry for generating the electrical signal with an optical signal detector using N discrete samples; a...
7177013 Ranging apparatus, ranging method, and ranging program  
A ranging apparatus which determines distances to objects by using planar positions of the objects in images which are obtained by cameras which take the images, plural distortion correction...
6937321 Distance measuring method and image input device with distance measuring function  
A distance measuring technology capable of stably and accurately performing distance measurement of an object without any highly accurate focus control mechanism is provided. A distance measuring...
6700651 Ranging device  
A distance/defocus device has a plurality of areas in an observing frame, and time sequentially determines the distance to an object or an amount of defocus for each area by performing a...
6677568 Surveying instrument having a phase-difference detection type focus detecting device  
A surveying instrument includes a sighting telescope having an objective lens and an eyepiece; a Porro-prism erecting system; a semitransparent surface formed on a reflection surface of the...
6580385 Object detection system  
An object detection system, in particular for a motor vehicle, is described where the object detection system is a combination of at least three object detectors, each having a different detection...
6344893 Super-resolving imaging system  
A super-resolving imaging apparatus employs diffractive optical elements placed on the imaging lens. This element, and the use of a modified Scheimpflug arrangement allow the conversion of degrees...
6115111 Semiconductor laser based sensing device  
A system for determining a distance to a target object or a displacement of a target object monitors electrical characteristics of a semiconductor laser aimed at the object. Light emitted from the...
6108435 Method of detecting phase difference between a pair of images  
A method of detecting a phase difference between a pair of images of an object which are formed on a pair of optical sensor arrays through different optical paths, with presence of flare in one of...
5900975 Ghost image extinction in an active range sensor  
An apparatus is provided that includes a plate beamsplitter having a first surface coated with a partially reflective coating, and a second surface coated with an anti-reflective coating, and a...
5900927 Variable target autofocusing and range finder for measuring distance to a subject  
An image pickup frame is divided into a plurality of areas. A contrast at each area is measured. An area where a main subject is located is detected by comparing contrasts at areas. A distance to...
5790242 Chromatic optical ranging sensor  
A three dimensional sensor includes an illumination source that produces broadband, high intensity optical energy. This optical energy includes a number of individual wavelength components. The...
5703677 Single lens range imaging method and apparatus  
A single lens range sensor comprises a camera 27 having a pair of plano-convex lenses 28a and 28b, an optical mask 30, an imaging sensor 32, a digitizer 34 and a computer 36. The optical mask 30...
5534687 Focus detecting optical system with an off-axis light source and light projecting lens  
In order to provide a focus detecting optical system of the active type which is capable of effecting good focus detection and enables a space to be effectively used, the focus detecting optical...
5076687 Optical ranging apparatus  
An optical ranging apparatus is provided which resolves the depth of objects in an object field of a main lens. Light is directed by the main lens to a lenticular array consisting of an array of...
4993830 Depth and distance measuring system  
Apparatus for determining the relative distance or depth to an object. A light source projects light at an object whose distance is to be determined. A lenticular prismatic screen responds to...
4897536 Optical axis displacement sensor with cylindrical lens means  
Disclosed herewith is an optical axis displacement sensor, which has a convex lens having a hole on the optical axis, a light shielding plate having a hole on the optical axis and two parallel...
4884888 Method and device for contactless optical measurement of distance changes  
A method and device for contactless optical measurement of distance changes, in which two light beams (5, 6) are directed from a measuring table (1) through an optical system (9) in such a manner...
4825239 Distance detection method and apparatus  
A distance detection apparatus comprising: a distance detection unit for detecting information on a distance to an object, a controller for operating the detection means a plurality of times, and...
4743771 Z-axis height measurement system  
This invention concerns an optical system for use with a television camera for detecting the surface location of an object. A preferred optical image having a distinct, unique, recognizable...
4733609 Laser proximity sensor  
A laser proximity sensor for a projectile includes a laser diode having front and rear facets. The diode generates a main laser signal and directs a first portion thereof out of the front facet as...
4725722 Automatic focusing method and apparatus utilizing contrasts of projected pattern  
A method of auto-focusing suitable for fine patterns of LSIs and an apparatus therefor, particularly applied for checking the geometry of a circuit pattern of a semiconductor device formed on an...
4690549 Apparatus for detecting distance to an object  
An apparatus for detecting distance to an object is disclosed, which includes a taking or imaging lens for collecting a light from an object, a first lens device for forming the light from the...
4686360 Device for the automatic focussing of optical instruments with complementary measuring and detecting diaphragms  
For the automatic focussing of an optical instrument on an object, a measng diaphragm is inserted into the illuminating radiation path, which diaphragm is to be projected onto the object plane and...
4681432 Photo-electric converting device  
A photo-electric converting device includes storing parts which store electric charges obtained through a photo-electric conversion process respectively from reflected light received when light...
4674882 Precision optical displacement measuring instrument using servo controlled fiber optic sensor  
A displacement measuring instrument for measuring the displacement of a target including in combination a fiber optic lens assembly including means for maintaining said assembly in space relation...
4647193 Optical target ranging apparatus  
The range of a target is determined by imaging an illuminated spot on the target onto a detector surface by a focusing lens. The detector is positioned away from the focal point of the image of...

Matches 1 - 50 out of 83 1 2 >