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| Number | Title | Issue Date |
| 4971443 | Optical position detecting method and apparatus therefor A method of and an apparatus for optically detecting the position of an object having a surface including first and second reflecting regions each having a different reflectance coefficient. First a ratio of reflectance of the first reflecting region to t... | 11/20/1990 |
| 4968146 | Optical depth measuring device to be mounted on drilling power tool An optical depth measuring device for use with a drilling power tool for drilling a bore in a workpiece and comprising a radiation source for projecting an optical pattern onto a surface of the workpiece, a radiation receiver for receiving an image reflec... | 11/06/1990 |
| 4963731 | Optical level measurement system To provide rapid level measurements with improved reliability, the present invention provides an apparatus and method for optically determining the level of a material through a technique for measuring the ratio of digital signals acumulated during an ind... | 10/16/1990 |
| 4961155 | XYZ coordinates measuring system An XYZ coordinates measuring system has a slit light source for projecting a slit light beam onto the surface of a work to be measured with a predetermined angle. Furthermore a television camera takes a light line formed on the surface of the work by the ... | 10/02/1990 |
| 4936676 | Surface position sensor A surface position sensor utilizing a beam of energy reflected from the surface through an optical receiver to a detector wherein an energy blocking member having a receiver aperture permits only energy substantially parallel to the optic axis of the opti... | 06/26/1990 |
| 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 directs two coplanar beams of modulated light onto the surf... | 12/19/1989 |
| 4880307 | Method of detecting the position of an object In a position detection system when a preselected parameter magnitude of a signal produced in response to a received reflected laser beam, is excessively high, the power of the laser is reduced until such a satisfactory level is reached. On the other hand... | 11/14/1989 |
| 4871252 | Method and apparatus for object positioning Method and apparatus for positioning a three-dimensional object at a preselected position within a workstation. An optical system in the apparatus creates a 3-dimensional image of the object at the selected preselected position. An imaging device in the a... | 10/03/1989 |
| 4823014 | Position detecting device usable with an object having a surface A position detecting device, usable in a projection exposure apparatus for optically projecting a pattern of a reticle upon a wafer by use of a projection lens system, for detecting the position of the wafer with respect to an imaging plane of the project... | 04/18/1989 |
| 4791482 | Object locating system The invention projects a known geometry light source onto the surface of an object. A camera with a known distance and angular orientation with respect to the light source is used to capture the light source image on the object. The normal to the surface ... | 12/13/1988 |
| 4789243 | Orientation determining system for a device This invention discloses a system which automatically determines not only a distance from an object surface, but also an orientation of the device with respect to the object surface. This invention also discloses an arrangement of three or more position s... | 12/06/1988 |
| 4782239 | Optical position measuring apparatus Apparatus for measuring the distance to an object comprising projection means for projecting a radiation beam onto the object including a radiation generating means and a first optical system, and detection means for detecting the radiation beam reflected... | 11/01/1988 |
| 4769700 | Robot tractors Disclosed is an electro-optical and microcomputer based method and apparatus for automatically guiding tractors and other farm machinery for the purpose of automatic crop planting, tending and harvesting. A target is preferably located at one boundary of ... | 09/06/1988 |
| 4762578 | Non-contact sensing and controlling of spacing between a depositing tip and each selected depositing location on a substrate The invention involves non-contact sensing of a selected location on a substrate at which material is to be deposited, and positioning of a material depositing tip a preferred distance from this location on the substrate according to such sensing and in p... | 08/09/1988 |
| 4733969 | Laser probe for determining distance A laser based optically triggered sensor system is described which can function as a coordinate measuring machine (CMM) probe. With the sensor, a CMM can find the exact location of the surface of a test object without physically having to touch the object... | 03/29/1988 |
| 4723845 | Optical apparatus for the detection of position An optical apparatus for detecting the position of an object by projecting a light image onto the object through a transparent plate and detecting the reflected light from the object through the transparent plate is disclosed. The projection optical syste... | 02/09/1988 |
| 4705395 | Triangulation data integrity Disclosed is an improved electro-optical triangulation distance sensing method and apparatus incorporating a reference detector to detect light returned from an object surface and so control light power, integration time (or other characteristic) of the p... | 11/10/1987 |
| 4702605 | Rocker arm sensor An arrangement for scanning the measurement field of view of a three-dimensional measurement system, in which the measurement system is pivoted through a relatively small motion to scan a relatively large area of volume. The measurement system is rotated ... | 10/27/1987 |
| 4652749 | Optical coordinate measuring system with dual path reflecting means An arrangement for scanning the measurement field of view of an optical measurement system, in which one or more reflecting surfaces are placed within the optical path(s) of an optical measurement system. The reflecting surface is rotated and/or translate... | 03/24/1987 |
| 4589773 | Position detecting system A position detecting system suitable for the position control of the surface of a workpiece mounted in an electron beam exposure system is disclosed which includes an electrically-driven light source, a first optical system for focusing a light beam from ... | 05/20/1986 |
| 4548504 | Device for determining the real or the virtual distance of a source of light from a measuring plane The invention relates to a device for determining the real or the virtual distance of a source of light from a measuring plane. Such devices are preferably employed in position detectors in which light produced by a light source is caused to impinge on th... | 10/22/1985 |
| 4541721 | Optical checking apparatus and method of using same Apparatus for optically checking both the gap between two adjacent parts such as the hood-to-fender fit of a vehicle and the surface flushness of the parts employs a hand-held fixture which is adapted to engage edges of the part in order to orient the fix... | 09/17/1985 |
| 4498776 | Electro-optical method and apparatus for measuring the fit of adjacent surfaces To measure the flushness and the gap width between adjacent spaced panels, a pair of light sources project beams of light onto the respective panels adjacent the gap at oblique angles to the panels to provide on each panel an illuminated region extending ... | 02/12/1985 |
| 4479717 | Apparatus for measuring the position of an object A source of light (F1, 34) directs a light beam (35) towards an object. A photoelectrical measuring system (39) includes three measurement detectors (40, 41, 42) having respective reception fields (44, 45, 46). These fields overlap partially, and all of t... | 10/30/1984 |
| 4461576 | Optical measuring system An optical gauge having a laser or other such light source, the beam from which is cyclically directed upon a photo-detector by a rotating plane mirror, the time at which or during which in each revolution of the plane mirror the beam impinges upon the ph... | 07/24/1984 |
| 4402608 | Room scanning system using multiple camera and projector sensors An arrangement for obtaining three-dimensional position data on surfaces defining a room, and objects enclosed by that room. The room is scanned with a master and slave sensors to determine the three-dimensional profiles of surfaces that are visible to th... | 09/06/1983 |
| 4373816 | Scanning beam optical position determining apparatus and method A method and apparatus for determining the location of a target surface by projecting a periodically scanning pattern of light onto the target surface, and comparing the time of projection of a predetermined point of the pattern along a predetermined path... | 02/15/1983 |
| 4329060 | Non-contacting workpiece gauging system A system for finding the position of a workpiece surface relative to a reference through non-contact gauging. The system uses a radiant energy beam projected such that an illuminated spot moves along the workpiece surface with movement of that surface rel... | 05/11/1982 |
| 4326804 | Apparatus and method for optical clearance determination Clearance determination is made between an edge of a translating member, e.g., a rotating blade member, and a relatively stationary second member, e.g., a shroud. In one form, an optical probe is provided for directing light from a light source to the edg... | 04/27/1982 |
| 4269512 | Electro-optical position-monitoring apparatus with tracking detector An electro-optical position-monitoring system including a tracking detector whose position is interpretable to indicate the spatial location of a monitored object. In one embodiment, the detector includes a beam-splitting prism, and in the other includes ... | 05/26/1981 |
| 4198164 | Proximity sensor and method and apparatus for continuously measuring rail gauge A method and apparatus for railroad track surveying for accurately determining track gauge includes a pair of electro-optical sensors which are situated completely above the rail head level. A collimated light source in each sensor projects a narrow light... | 04/15/1980 |
| 4181430 | Method and apparatus for optical method of measuring rail displacement For optically measuring rail displacement, a light projector with a slit plate, a reflection mirror for light projection, a reflection mirror for light reception and a light receptor with a slit plate are installed at specified distances from one another ... | 01/01/1980 |
| 4171160 | Distance measuring instrument A distance measuring instrument comprising a source of coherent light and a receiver is disclosed which may be used to measure the one dimensional position of an object surface. Coherent light is directed at a predetermined angle onto the object surface a... | 10/16/1979 |
| 4146926 | Process and apparatus for optically exploring the surface of a body In order to determine the positions in space of certain points on the surface of a body, a laser beam is trained upon a selected punctiform area of that surface and two sets of reflected light rays, traveling along divergent paths, are intercepted and foc... | 03/27/1979 |
| 4136957 | Recognition device for recognizing the shape and the position of an object A recognition device for recognizing the shape and the position of an object includes means for applying a bundle of parallel light beams having a specific cross-section to a space containing the object, means for transducing the light informations from t... | 01/30/1979 |
| 4113389 | Optical measurement system A microscope-projector system is employed to image and view a transition of light and dark areas on an object. The position of the shadow corresponds to the vertical position of a portion of the object, and an adjustable device is employed for adjusting t... | 09/12/1978 |
| 4105925 | Optical object locator In order to determine the position and orientation of an object on a conveyor, two planes of light intersect at a single transverse line on the conveyor surface, the planes of light each being at an acute angle to the conveyor. A linear diode array aligne... | 08/08/1978 |
| 3994589 | Apparatus for determining the position of a surface This invention is directed to an electro-optical apparatus for determining the position of an opaque surface without contact with the surface. It includes a light beam system which projects a well defined beam having a rectangular cross-section, obliquely... | 11/30/1976 |
