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| Number | Title | Issue Date |
| 7643135 | Telescope based calibration of a three dimensional optical scanner An embodiment of the invention includes using a set of telescopes to calibrate a three dimensional optical scanner. Three separate calibrations are disclosed for a survey grade calibration: (1) angular calibration, implemented using at least one anti-podal pair of t... | 01/05/2010 |
| 7411660 | Laser straight ruler and method for measuring distance and projecting line using the straight ruler A laser straight ruler having a main body and a beam scanner installed on the main body. A laser beam is scanned to form a beam spot on an object. A position sensing device receives a laser beam reflected by the object and senses a position of the beam spot. A signa... | 08/12/2008 |
| 7332707 | Aisle width sensor for mobile storage systems The disclosure relates to aisle width sensor for a mobile storage system for determining the width between adjacent movable storage units, particularly when creating an aisle therebetween. The sensor includes a first bracket which is slidable with respect to a secon... | 02/19/2008 |
| 7263297 | Method and device for the control of the power radiated onto a transmission telescope in free-space laser telecommunications systems A variable beam divergence FSO optical transmitter is described, as well as a method for altering the transmission power being radiated in a telescope for laser on air telecommunications systems. The method calls for the transmission of a very wide angle of the lase... | 08/28/2007 |
| 7196656 | Apparatus for estimating direction of arrival of signal An apparatus for estimating direction of arrival of signal is provided that has excellent performance in terms of angular resolution and the number of signals that can be identified. In an array sensor comprising a plurality of sensor elements, the two outermost sen... | 03/27/2007 |
| 7106430 | Airborne search and rescue scanner An airborne search and rescue scanner is provided to locate a missing person wearing a reflector for reflecting laser energy emitted from a scanner in a high speed aircraft. The scanner and reflector combination enable scanning of a large search area in a relatively... | 09/12/2006 |
| 6952255 | System and method for integrated multi-use optical alignment An optical alignment system for use in a semiconductor processing system is provided. The optical alignment system includes a wafer chuck that has an alignment feature integrated into the top surface of the wafer chuck. In addition, a beam-forming system, which is c... | 10/04/2005 |
| 6922483 | Methods for measuring DMD low frequency spatial uniformity Methods for measuring the low spatial reflectivity uniformity of a DMD spatial light modulator. These methods are unique since they compensate for the non-uniformities introduced by the tilt angle of the DMD mirrors in addition to the normal system non-uniformities ... | 07/26/2005 |
| 6920394 | Method and apparatus for determining the elevation of an underground structure A survey device for determining an elevation of a subterranean architectural feature includes a distance sensor operable to generate a first signal indicative of a line-of-sight distance from the survey device to the subterranean architectural feature. The device al... | 07/19/2005 |
| 6809806 | Apparatus and method for verifying the beam axis of front-looking land vehicle transceiver antenna Apparatus and method for measuring the angle of elevation of the beam axis (90) of a front-looking radar antenna (68). A first fixture (140) has an indicator (120) for indicating angle of elevation and a first laser (148) aimed in ... | 10/26/2004 |
| 6795612 | Device and method for measuring angle of slant surface of an optical component The invention is a device for measuring angle of slant surface of an optical component and a method used therein. The slant surface of the optical component faces exactly toward the slant surface of a standard GRIN Lens and the optical component is spaced from the s... | 09/21/2004 |
| 6661525 | Method for monitoring the length of constant-wire-length bonds and apparatus therefor On a circuit-board intended for constant-wire-length (CWL) bonding, one or more special "test" pairs of bonding pads are provided along with, in each case, a series of markings adjacent the pads. In use, the board is populated with CWL bonds (this include... | 12/09/2003 |
| 6480271 | Traversing laser locating system A system for visually pointing out locations on a three-dimensional structure such as an airframe of an aircraft includes a laser head that traverses an elongate track erected to pass through or adjacent to the structure. The laser head is traversed and s... | 11/12/2002 |
| 6104478 | System for uninterrupted light beam deflection A system for uninterrupted deflection of a light beam exiting from a radiation source can be offset via a laterally movable lever mechanism. A preferred radiation source is an optical guide in the form of an optical fiber (1), through which a laser light ... | 08/15/2000 |
| 5621565 | Protraction device for a measuring microscope A protraction device for a measuring microscope comprises a reticle aligned on an optical path of the microscope at an intermediate image plane thereof and adapted for rotation about a central axis, and an angle encoder operably coupled to the reticle suc... | 04/15/1997 |
| 5452077 | Transient-free method of determining satellite attitude A method of spacecraft attitude determination is proposed which calculates the bias between the usual two-cell and four-cell earth sensor measurements. During period of sun or moon interference, when the two-cell mode is selected, this bias is added to or... | 09/19/1995 |
| 5337241 | Spacecraft attitude sensor having an optical apparatus for increasing applications thereof A spacecraft attitude sensor which determines roll/pitch angles of a spacecraft, is disclosed. Two light ray detectors are provided in a manner to be canted by a predetermined angle with each other. Each of the two light ray detectors defines a "field of ... | 08/09/1994 |
| 5258822 | System for detecting the position of a moving body A position detection system for a moving body comprising means for rotatively scanning the light beam projected from a light beam generator mounted on the moving body in a substantially horizontal plane, and vibrating to vertically vibrate the rotatively ... | 11/02/1993 |
| 5255066 | Measuring device for track building machines The measuring device for track building machines comprises an optical receiver device having two lenses (1, 2) aligned in one axis (3) and in each case at least one associated sensor strip (4, 5). The projections of light sources (A, B, C) disposed outsid... | 10/19/1993 |
| 5220397 | Method and apparatus for angle measurement based on the internal reflection effect A new method of angle measurement is based on the internal reflection effect at an air/glass boundary. The method uses a differential detection scheme to largely reduce the inherent non-linearity of the reflectance versus the angle of incidence in interna... | 06/15/1993 |
| 5198868 | Laser surveying system having a function of marking reference points In laser surveying system has a laser measuring unit which is operable independently of a laser projector, a laser spot pattern is first determined by using the laser measuring unit and projected onto the working face of an object structure by driving the... | 03/30/1993 |
| 5159401 | Elevation-angle sensing, celestial navigation and surveying The invention features an elevation-sensing system comprising an elevation-sensing instrument which includes a sighting device having an optical axis for aiming at an object and an electronic elevation-angle sensor attached to the sighting device and havi... | 10/27/1992 |
| 5118184 | Transit for establishing 90 degree angles A transit includes two identical transit elements oriented at 90° with respect to each other. Each transit element includes an objective end and a viewing end and be focused on a distant point. The transit is mounted on top of an intersection of two elem... | 06/02/1992 |
| 4996483 | Spinning angle optical calibration apparatus An optical calibration apparatus is provided for calibrating and reproducing spinning angles in cross-polarization, nuclear magnetic resonance spectroscopy. An illuminated magnifying apparatus enables optical setting an accurate reproducing of spinning "m... | 02/26/1991 |
| 4958927 | Optical angle measuring instrument A manually-rotatable switch knob is provided on the alhidade of a sextant that is connected to a switching pin of hardened steel arranged eccentrically to the mounting of the knob. The switching pin engages the drum-screw mounting and, under the action of... | 09/25/1990 |
| 4752126 | Surveying instrument A surveying instrument in which the azimuth angle setting device is incorporated has a collimating telescope which is rotatable around at least a vertical axis. The azimuth angle setting device comprises horizontal angle detection means for producing an e... | 06/21/1988 |
| 4725738 | Device for detecting changes in the relative position of separately mounted machines An apparatus is proposed for detecting changes in the mutual position of two mutually spaced and separately mounted machines or parts thereof in relation to a given initial position in a rectangular spatial coordinate system. A high degree of functional c... | 02/16/1988 |
| 4674873 | Satellite locator apparatus The satellite locator means comprises a dual optical instrument which provides a portable, multiple eyepiece unit containing a plurality of lenses and mirrors. The outer housing has a handle to insure the steadiness and accuracy of the readings when the u... | 06/23/1987 |
| 4605304 | Angle-measuring instrument with a coarse-fine drive arrangement The invention is directed to an angle-measuring instrument such as a theodolite, tacheometer or the like having a coarse-fine drive arrangement for presetting a circle part of a graduated circle to a predetermined read-out value. In a preferred embodiment... | 08/12/1986 |
| 4413906 | Passive optical rangefinder/sextant having search capability Uniquely integrating a search mirror and a deflection mirror with a passive ptical rangefinder and a remote sextant, enhances the operation of both devices. The improved rangefinder/sextant provides day/night 360° azimuthal and at least -5° to about 60°... | 11/08/1983 |
| 4339198 | Geodetic instrument The combination with a sextant embodying an index mirror rotatable about a predetermined axis to bring a sighted object into juxtaposition with the line of sight of the optical system at the center of the horizontal mirror of an arcuate informational grat... | 07/13/1982 |
| 4281928 | Optical transit square with focusable crossing telescopes A precision optical square instrument for use in optical tooling to accurately determine lines and planes at right angles to each other, such as horizontal and vertical lines and planes. The instrument employs focusable telescopes mounted at right angles ... | 08/04/1981 |
| 4155648 | Optical pipe end-squareness gauge An optical gauging apparatus is provided for determining the deviation of a pipe end from squareness with respect to the pipe axis. A viewing scope is placed centrally in the pipe end to be measured so as to be directed at right angles thereto, and a grad... | 05/22/1979 |
| 4131366 | Direction indicating device A device for indicating the direction to a remote object comprises at least one disc-like unit consisting of a plurality of elongated light guides, arranged in parallel, mechanically interconnected but optically insulated from each other. The end surfaces... | 12/26/1978 |
| 3968570 | Electronic sextant An improved sextant which provides a very accurate angular measurement of the position of a celestial body relative to the horizon. The sextant is a typical prior art sextant having a horizon glass and an index mirror, and wherein the sextant is sighted b... | 07/13/1976 |
