Class 356/4.05 - Of focal point search

Subclass of Class 356 - Optics: measuring and testing
Definition: Subject matter that includes a way to mechanically, or otherwise,
No. of patents: 37
Last issue date: 01/31/2012

Number	Title	Issue Date
8107056	Hybrid optical distance sensor Methods and systems for a hybrid optical device for high dynamic range high resolution remote sensing of object distance, object motion displacement, object three dimensional structure, object spatial profile, and measurement of liquid levels, and different matter i...	01/31/2012
8004659	Vision measuring machine and focusing method thereof A vision measuring machine includes a stage for supporting a workpiece, an image capturing device movable relative to the stage, and a laser ranging module directed towards the stage. The laser ranging module is capable of emitting a laser beam to the workpiece to f...	08/23/2011
7746448	Measuring apparatus A measuring apparatus (1) for contactless detection of a distance between a surface (7) of a measurement object (8) and the measuring apparatus (1), and for simultaneous contactless visual detection of the surface (7), has a measur...	06/29/2010
7397540	Phase diversity ranging sensor A system to determine the distance to an object includes one or more aberrating elements to introduce aberration into light from the object. Image data is obtained at two different focus conditions, and used to determine the object distance. ...	07/08/2008
7348538	Methods and systems for detecting proximity of an object Methods and systems for detecting a proximity of an object are provided. The method includes receiving a first beam of radiation from a first field of view directed onto a first detector and a second beam of radiation from a second field of view directed onto a seco...	03/25/2008
7227647	Method for measuring surface properties and co-ordinate measuring device A method and apparatus for measuring surface properties of a workpiece in an extremely precise manner by means of a co-ordinate measuring device (10), independently from the material properties of the workpiece. A molded probe element is used which can be dis...	06/05/2007
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 bank of M parallel sample/hold circuit unit cells individual ones of whi...	04/17/2007
7193690	Laser scanner and method for optically scanning an environment A laser scanner for optically scanning and measuring an environment comprises a light transmitter having a predetermined transmission power for emitting a light beam. The emitted light beam is reflected at a measurement point in the environment. The reflected light ...	03/20/2007
7193731	Optical displacement sensor Optical displacement sensor may possess light-emitting element(s) for projecting light onto distance measurement target(s), and light-receiving element(s) capable of receiving light reflected from distance measurement target(s) and disposed such that light-receiving...	03/20/2007
7132634	Distance measuring apparatus using passive AF sensor A distance measurement object is imaged by a pair of line sensors of an AF sensor, and sensor data showing the sensor images is generated. A CPU generates AF data showing the contrast of sensor images with the sensor data being sequentially acquired by the CPU for e...	11/07/2006
7119886	Lithographic apparatus, device manufacturing method, and angular encoder In a lithographic projection apparatus, a measuring system configured to measure the position of the projection system relative to a reference frame includes sensors rigidly mounted in relation to counterpart sensors of a measuring system measuring the substrate tab...	10/10/2006
7106424	Compact laser altimeter system A laser-based altimeter for use on-board an aircraft comprises: a first housing including a hollow cavity and an exit aperture, and a second housing including a hollow cavity and an entrance aperture. A laser source and a plurality of first optical elements are fixe...	09/12/2006
7084385	Range discriminating optical sensor having a wide angle lens with a fixed focal length A range discriminating optical sensor for use in a vehicle safety system is provided. The range discriminating sensor is designed to create a small depth of field such that objects at a range outside of the depth of field are eliminated from the image. Generally, th...	08/01/2006
7075634	Surveying system An automatic surveying system is provided that comprises a surveying device, a collinear-line calculating processor, a sighting direction control processor, and an object-point searching processor. The collinear line calculating processor obtains a collinear line fo...	07/11/2006
6856381	Method for carrying out the non-contact measurement of geometries of objects Method for carrying out the non-contact measurement of geometries such as surfaces of objects, with a coordinate measuring machine with a laser beam that is projected onto a measuring point of the object via an optical system, and in which the light that is reflecte...	02/15/2005
6822732	Surveying instrument having an auto-collimating function and a distance measuring function A surveying instrument includes a surveying instrument body which is rotatable about vertical and horizontal axes and has a telescope optical system for collimating the surveying instrument relative to a survey point; a collimator optical system for projecting first...	11/23/2004
6624402	Surveying instrument, surveying instrument having AF function, surveying instrument having PF mechanism, and surveying instrument having multiple-focus function A surveying instrument having an AF apparatus, provided with a focusing lens and a collimation telescope, includes a focus detector for detecting a focus state through the collimation telescope, and a controller for moving the focusing lens of the collima...	09/23/2003
6621559	Electronic leveling apparatus and method of controlling focusing operation of the electronic leveling apparatus The present invention intends to provide an electronic leveling apparatus or the like in which a pattern image of a staff received on a photoelectric converting unit is converted into an electric signal, a peak of contrast is detected based on the obtaine...	09/16/2003
6361956	Biospecific, two photon excitation, fluorescence detection and device A method for measuring the end point and for monitoring the real time kinetics of a bioaffinity reaction in biological fluids and suspensions, employing microparticles as bioaffinity binding solid phase, biospecific reagent labelled with a fluorescent lab...	03/26/2002
6342397	Homogeneous biospecific assay using a solid phase, two-photon excitation and confocal fluorescence detection A homogeneous biospecific assay method for an analyte in solution or in a biological suspension, in which a biospecific reagent competitively binding an analyte and a ligand labeled with a fluorescent molecule, is reacted with and bound to a solid phase, ...	01/29/2002
6128071	Range data recordation Detailed depth information in a three dimensional scene is recorded by a camera with a single lens system (100). In one embodiment, a lens (100) is movably attached to a camera housing (302) such that a motor (304) can move the lens (100) in the direction...	10/03/2000
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 laser is reflected from a surface of the object back into ...	09/05/2000
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 individual wavelength components are impinged in a spot on a ...	08/04/1998
5512760	Optical height detector with coaxial irradiation and image axes and plural detectors spaced along the image axis The height of a surface (25) along an axis (4) is determined by measuring the axial position of an irradiated spot (31) formed on the surface at the intersection of the surface and the axis. Radiation reflected by the surface and collected by a lens (8) f...	04/30/1996
5460758	Method and apparatus for production of a three-dimensional object A three-dimensional object is modelled by solidifying superposed layers in such a manner that on an already solidified layer a following layer of initially liquid or powdery material is solidified by light action or the like in correspondence with the for...	10/24/1995
5202740	Method of and device for determining the position of a surface A light beam (21) is focused proximate to a (partly) reflecting surface (13, 14). The radiation reflected in the surface is split into two sub-beams and imaged on a radiation-sensitive detection system (50). The distance between the radiation spots formed...	04/13/1993
4843228	Method and apparatus for noncontact automatic focusing Method and apparatus, employing a polarized He-Ne laser beam as a measuring beam, for changing the angle of incidence of the measuring beam upon an object in connection with a system capable of performing precision automatic focusing of the measuring beam...	06/27/1989
4798437	Method and apparatus for processing analog optical wave signals Discrete segments of an analog optical wave signal are collected in individual waveguides of a waveguide array. In the waveguide array, the optical signal is processed to provide an analysis of the signal or to control the signal. The signal can be analyz...	01/17/1989
4652122	Gust detection system Air turbulence ahead of an aircraft is determined by scanning the beam of a variable focal distance laser airspeed unit close-in to the aircraft to determine aircraft airspeed and angle of attack, and scanning the beam at distances farther out from the ai...	03/24/1987
4633074	Method and apparatus for focusing a beam of light on an object Focusing of a light beam on an object is effected by two mutually complementary techniques: in the first technique the beam spot on the object is reproduced on several measuring diaphragms arranged at different distances from the image plane and the light...	12/30/1986
4567362	Process and apparatus for the focusing of a beam of light on an object A laser beam impacts an object through a focusing lens. The beam spot produced on the object is reproduced by means of an optical assembly of three measuring diaphragms in the form of a stripe of a width varying as a function of the state of focusing, wit...	01/28/1986
4527893	Method and apparatus for optically measuring the distance to a workpiece The point of focus of an image is swept through a measurement zone in the image space of a lens system by sweeping a plurality of convex specular surfaces through the object space of the lens system to vary the object space. The specular surfaces are form...	07/09/1985
4336997	Change of distance measuring apparatus Change of distance measuring apparatus features a light transmitter - receiver unit 23 which is used to sense the distance A to the surface of a measurement object 35 and more particularly to sense changes in the distance A occurring due to changes in thi...	06/29/1982
4269491	Distance information judging circuit for focus detecting apparatus A distance information judging circuit for focus detecting apparatus comprises memory means for storing a distance information signal obtained from the focus detecting apparatus for each scan of an optical system,, and coincidence signal generating means ...	05/26/1981
4060325	Automatic focusing system employing two variable frequency oscillators In an automatic focusing system having an objective spaced an adjustable distance from an image plane, two variable frequency oscillators, each controlled by a separate photoconductor element, produce two variable-frequency signals that have substantially...	11/29/1977
4040739	Method and device for generating a signal dependent on the distance of an object in an object space A light beam passes through a physical pattern of opaque and transparent areas and is projected into space to an image plane. Upon an object appearing at the image plane the pattern is reflected back to the physical pattern as a second pattern image. The ...	08/09/1977
4010479	Focusing apparatus for optical systems Focusing apparatus for use in optical systems, such as photographing cameras, is disclosed. The focusing apparatus of the invention comprises an electronic system for developing, through either a single or two separate channels, pulse trains, the number o...	03/01/1977

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Class 356/4.05 - Of focal point search