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| Number | Title | Issue Date |
| 7872733 | Tracking type laser interferometer and method for resetting the same A tracking type laser interferometer that detects displacement of a retroreflector 300 being an object to be measured by utilizing interference of a laser beam 102 irradiated onto the retroreflector 300 and reflected by the retroreflector 300... | 01/18/2011 |
| 7619719 | Phase noise compensation for interferometric absolute rangefinders The invention relates to a method for interferometric absolute distance measuring by a frequency modulation electromagnetic radiation on at least one measurable target and for subsequently receiving a retransmitted radiation with a heterodyne mixture, wherein the ra... | 11/17/2009 |
| 7408650 | Optical-axis deflection type laser interferometer, calibration method thereof, correcting method thereof, and measuring method thereof An optical-axis deflection type laser interferometer includes a reference ball serving as a measurement reference, a retroreflecting means disposed at an object to be measured, a laser interferometer length measuring apparatus outputting a measurement value between ... | 08/05/2008 |
| 7360708 | Information processing method and system using terminal apparatus An information processing method using a terminal apparatus, including: applying light with a concentric ring-like interference fringe pattern on one of subjects by using a pointer provided in the terminal apparatus; detecting the interference fringe pattern by usin... | 04/22/2008 |
| 7354168 | Facet mirror having a number of mirror facets A facet mirror (10) is provided with a number of mirror facets (11), in which the mirror facets (11) respectively have a spherical or conical facet body (17) with a reflecting surface (12). The side of the facet body (17) av... | 04/08/2008 |
| 7327446 | Self-compensating laser tracker An apparatus and method for compensating a coordinate measurement machine is provided, which may be a laser-based coordinate measurement machine, laser tracker, or other coordinate measurement device. In one exemplary method, such compensation comprises self-compens... | 02/05/2008 |
| 7317513 | Absolute distance measuring device An external cavity laser has an external cavity that is formed between a target surface and a laser diode facet located farthest from the target surface. A chromatic dispersive element is disposed in the external cavity, and focuses light from the laser diode such t... | 01/08/2008 |
| 7283214 | Self-mixing laser range sensor A laser range finder includes a laser and a photosensitive element. The laser projects a beam onto a target surface. A backscattered portion of the laser beam returns to the laser from the target surface and enters the laser emitting cavity. Variations in laser outp... | 10/16/2007 |
| 7277811 | Calibration apparatus and process The invention discloses differing embodiments of calibration apparatus, and methods of use. In one embodiment, the calibration apparatus may be used to calibrate a tool, positioning system, robot, machine, or device. The calibration apparatus may include a first mem... | 10/02/2007 |
| 7275725 | Vacuum-suction tool stand When a vacuum-suction tool stand (1) is to be stuck to a table (2), a valve (16) is rotated to a position so that a knob (163) comes to the right side thereof viewed from the front to establish communication between an air suction hole ( | 10/02/2007 |
| 7268892 | Method and device for the verification and identification of a measuring device The invention concerns a method and a reference object for the verification and identification of a measuring device for measuring the spatial position of one or several points situated in the measuring volume (9) of the measuring device, whereby the measurin... | 09/11/2007 |
| 7248374 | Spherically mounted light source with angle measuring device, tracking system, and method for determining coordinates A device for use in conjunction with a coordinate measuring device, a three-dimensional coordinate measuring system and a method of measuring three-dimensional coordinates are described. The device includes a light source mounted substantially within the center of a... | 07/24/2007 |
| 7233399 | Feedback control of an interferometer The invention proposes a method for feedback control, in which a portion of a data signal is split and rectified and the signal intensity is detected with slow speed electronics for improving the control of a delay line interferometer (DLI) used in optical data tran... | 06/19/2007 |
| 7215413 | Chirped synthetic wave laser radar apparatus and methods Chirped synthetic wave laser radar apparatus and methods are disclosed. In one embodiment, a system includes a laser source, a controller operatively coupled to the laser source and adapted to frequency-modulate first and second laser outputs, and an optical assembl... | 05/08/2007 |
| 7193196 | Methods and systems for evaluating optical systems Systems and method for determining, based on a gray scale image, focus of an imaging system. A method of this invention includes the steps of: a) acquiring a gray scale image of a test target, b) binarizing the acquired gray scale image, c) analyzing the binarized a... | 03/20/2007 |
| 7190465 | Laser measurement system What is disclosed is a 3-D laser measurement system, including a mirror continuously rotatable about a rotation axis which extends, e.g., in parallel or coaxial with a measuring beam emitted by an optical emitter and impinging on the mirror. ... | 03/13/2007 |
| 7167300 | Modular, high energy, widely-tunable ultrafast fiber source A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable amplifier components. System compactness is ensured by employing eff... | 01/23/2007 |
| 7167325 | Flexured athermalized pseudokinematic mount A method for designing a base includes (1) selecting a location of a first center of expansion of a child part (CEchild) relative to a parent part; (2) determining a location of a second center of expansion of a bond joint (CEbond) bonding the ... | 01/23/2007 |
| 7139078 | High resolution analysis system A high resolution sub-surface imaging and analysis system includes at least one repetitive, broad spectral width, optical signal generator. It further includes an optical processing system which provides a probe and a reference beam, applies the probe beam to the ta... | 11/21/2006 |
| 7129508 | Compact VCSEL sensor with multiple sensing capabilities The invention includes also a sensor tat includes at least one laser, at least one detector, and at least one lens system that includes a sensor surface having three individual surfaces that are virtually the same, and an object surface having two individual surface... | 10/31/2006 |
| 7110121 | Rotation and translation measurement A position determining system (PDS)(100) or multiple parameters measurement system (MPMS)(300) particularly useful for translation and rotation measurement of objects having up to five degrees of freedom. A light source (122, 302) provides light... | 09/19/2006 |
| 7101053 | Multidirectional retroreflectors Multidirectional retroreflectors and methods of reflecting light beams from multiple directions are provided. The multidirectional retroreflectors utilize a four-mirror retroreflector with a common virtual reflection point. ... | 09/05/2006 |
| 7098668 | Digital measuring head A digital measuring head in a measuring apparatus measures a work by making a contact element abut to the work. The digital measuring head includes an arm supported rotatably around a support point arranged on a base; a finger having the contact element at a tip end... | 08/29/2006 |
| 7078672 | Method and system for optically tracking a target using interferometric technique An optical position-tracking system comprises an optical device for generating an incident light beam and a reference light beam from a light beam. Moreover, the optical position-tracking system further comprises a light beam steering device for sweeping the inciden... | 07/18/2006 |
| 6987560 | Inverse synthetic aperture radar-based covert system for human identification A method, apparatus, and computer readable medium are provided for creating a quantitative, three-dimensional representation of a surface of a human subject. Data representing a physical appearance of a human subject is gathered using inverse synthetic aperture rada... | 01/17/2006 |
| 6954681 | Board align image acquisition device with improved interface An electronics assembly system includes an image acquisition system that is coupled to a controller through an improved interface. The coupling facilitates advanced monitoring and control of the image acquisition system. Multiple image acquisition systems can be cou... | 10/11/2005 |
| 6937343 | Laser scanner with amplitude and phase detection A method for optical evaluation of a sample includes scanning a beam of coherent radiation over the sample, whereby the radiation is scattered from the sample, while directing a portion of the scanning beam toward a diffraction grating so that the portion of the bea... | 08/30/2005 |
| 6870605 | Method of measuring length and coordinates using laser tracking interferometric length measuring instruments A laser tracking interferometric length measuring instrument has a laser source and a tracking articulating optical lever provided on an optical path of an interferometric optical system. To track a retroreflector, the optical lever reflects a laser beam at the retr... | 03/22/2005 |
| 6856397 | System and method for automated fringe counting using image information A bulge testing system (10) for testing the material properties of a thin film window (14) using a Michelson interferometer (18) that generates an interference pattern (32) having fringes (34) and nodes (36) that move as the... | 02/15/2005 |
| 6819415 | Assembly for increasing the depth discrimination of an optical imaging system A method and arrangement are disclosed for increasing the depth contrast in microscope imaging. The method and implementation described can be designated as structured illumination for generating quasi-confocal optical sections. In implementing the method, a grating... | 11/16/2004 |
| 6697683 | Accurate positioner suitable for sequential agile tuning of pulse burst and CW lasers A positioning system including a sensor, a drive sequencer and an actuator. The sensor senses the actuator position and provides position signals to drive the sequencer which responsively computes and drives the actuator in open loop moves containing dwel... | 02/24/2004 |
| 6563569 | Laser tracking interferometric length measuring instrument and method of measuring length and coordinates using the same A laser tracking interferometric length measuring instrument has a laser source and a tracking articulating optical lever provided on an optical path of an interferometric optical system. To track a retroreflector, the optical lever reflects a laser beam ... | 05/13/2003 |
| 6490028 | Variable pitch grating for diffraction range finding system A means for overcoming perspective foreshortening in the receiver of a diffraction range finder by use of chirp diffraction grating 121. In a diffraction range finder, a diffraction grating with variations in pitch such that the displacement of higher-ord... | 12/03/2002 |
| 6483950 | Determining a depth A three-dimensional image is derived from two-dimensional images. At least one of the two-dimensional images has a predetermined number of pixels. Depth measurements are derived from the two-dimensional images. The number of derived depth measurements is ... | 11/19/2002 |
| 6438272 | Method and apparatus for three dimensional surface contouring using a digital video projection system A novel three dimensional surface contouring method has been developed based on the fall-field fringe projection technique. A digital video projection system is used to project digitally created fringe patterns onto the object. The fringe pattern distorte... | 08/20/2002 |
| 6181412 | Incoherent doppler laser detection and ranging system The invention relates to an incoherent Doppler laser detection and ranging system of the Lidar type comprising an emission laser and a receiver device including at least one telescope, an edge filter, and processor means responsive to the power PT | 01/30/2001 |
| 6147748 | Tracking system A tracking system is provided for tracking while determining the position of a point relative to a datum and includes a carriage (4) rotatably mounted on a frame (1) and which can rotate around a precision sphere (2). An interferometer (16) is mounted so ... | 11/14/2000 |
| 6133993 | Length and velocity measurement apparatus A length and velocity measurement apparatus based upon an interference pattern created between the amplitude modulation component of a transmitted signal, generated by an RF/microwave modulated continuous wave (CW) laser, and the amplitude modulation comp... | 10/17/2000 |
| 6118518 | Assembly comprising a pocket 3-D scanner An assembly comprising a 3-D scanner and suitable for capturing at least one of objects, or textures, or documents. The assembly preferably can be developed as a pocket page scanner having dimensions approximately the size of a chalkboard eraser. The asse... | 09/12/2000 |
| 5973770 | Method for measuring the relative proximity of and interacting with a plurality of media/molecular structures Apparatus for determining the level of fluid in a vessel comprises a fixed optical emitter for emitting light into the vessel, a light steering means for steering light emitted by the fixed optical emitter, the light steering means for steering the light ... | 10/26/1999 |
