Matches 1 - 50 out of 109 1 2 3 >


Match Document Document Title
9019481 Colored noise reduction method and device for optical remote airflow measurement apparatus  
An object of the present invention is to provide an optical remote airflow measurement apparatus with which even colored noise corresponding to an external environment of the apparatus can be...
9019479 Imaging apparatus and image processing method  
Disclosed is an imaging apparatus for generating data of a phase image based on an interference pattern acquired by a shearing interferometer, including: a differential phase data calculating unit...
9013685 Production process for an interface unit and a group of such interface units  
A process for producing an interface unit and also a group of such interface units are specified. The interface unit exhibits a first reference surface for beaming in radiation, a second reference...
8982334 Method of operating a SMI sensor and corresponding sensor device  
The present invention refers to a method of operating a self-mixing interference sensor and a corresponding self-mixing interference sensor device. In the method the laser (1) of the device is...
8913247 Device and method for interferometric vibration measurement of an object  
A device for interferometric vibration measurement, having a radiation source for generating an original beam, a first beam splitter for dividing it into measuring and reference beams, a detector...
8909804 Interferometric precise timing distribution with a precision phase detector  
A method distributing data in a network is provided. The method comprises measuring the path lengths between a reference clock and a plurality of remote destinations and sending a timing signal...
8810796 Light processing system and method  
A portion of a first portion of light (13, 90, 90′) from a source of light (11) is masked by a mask (138), and the resulting masked first portion of light (90″) is combined using a beam splitter...
8797514 Localized dynamic light scattering system with doppler velocity measuring capability  
A localized dynamic light scattering measurement system includes a beam displacer for splitting an incident beam having two orthogonal linearly polarized beam components with slightly different...
8717547 Production process for an interface unit and a group of such interface units  
A process for producing an interface unit and also a group of such interface units are specified. The interface unit exhibits a first reference surface for beaming in radiation, a second reference...
8703035 Imprint apparatus and method of manufacturing article  
An imprint apparatus includes a detector and an adjusting device. A second mark formed on a substrate includes a grating pattern having grating pitches in first and second directions which are...
8687173 Compact fiber optic geometry for a counter chirp FMCW coherent laser radar  
A system and method for determining a measured distance between a measuring device (20A) and an object (21), the system including a first laser source (13) for producing a first light beam (13A)...
8687174 Unit pixel, photo-detection device and method of measuring a distance using the same  
A unit pixel included in a photo-detection device, the unit pixel including a floating diffusion region in a semiconductor substrate, a ring-shaped collection gate over the semiconductor...
8659748 Scanning non-scanning LIDAR  
An all fiber optic laser based scanning system for real time terrain mapping under degraded visual conditions is disclosed. A laser output is modulated to achieve a desired pulse width and pulse...
8619266 Optical position-measuring device  
An optical position-measuring device includes a light source, a measuring reflector movable in space, a detection unit and a light-beam deflection unit that can align at least one beam of rays,...
8605150 Single image DC-removal method for increasing the precision of two-dimensional fourier transform profilometry  
An image processing system includes an object illuminated by a pre-determined first spectrum of light and an array of fringe lines, an imaging device configured to capture an image of the object...
8582085 Chirped coherent laser radar with multiple simultaneous measurements  
A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of...
8520191 Slit aperture for diffraction range finding system  
A method and system for forming a focused image on an image plane of a diffraction range finder with a variable pitch diffraction grating. Diffracted light is propagated through a lens and slit...
8427649 Range imaging lidar  
Light scattered by a portion of a fluid medium illuminated by a beam of substantially monochromatic light is received within a field-of-view nominally along an axis oriented in a different...
8209134 Methods for modeling the structural health of a civil structure based on electronic distance measurements  
Methods are disclosed wherein the structural health of a civil structure, such as, but not limited to, a bridge or the like is measured by electronic distance measurement (EDM) from a plurality of...
8199330 Tracking-type laser interferometer  
A tracking-type laser interferometer in which a pattern emission control unit controls a changing mechanism such that light is emitted along a predetermined pattern when judged by a first judgment...
8169599 Device and method for measuring parts  
A device and method for measuring moving material includes a processor and operating software associated therewith; a light source for emitting at least two polarized light beams in a manner...
7920272 Chirped coherent laser radar system and method  
A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of...
7895015 Method for measuring the structural health of a civil structure  
Methods are disclosed wherein the structural health of a civil structure, such as, but not limited to, a bridge or the like is measured by electronic distance measurement from a plurality of...
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...
7856334 Method for calibrating a laser-based spherical coordinate measurement system by a mechanical harmonic oscillator  
A method is disclosed whereby a laser-based spherical coordinate measurement system is dynamically calibrated. A mechanical oscillator, such as, but not limited to, a Foucault pendulum is used to...
RE41877 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...
7808618 Methods and apparatus for providing a semiconductor optical flexured mass accelerometer  
Methods and apparatus are provided for integrating various optical components onto a planar substrate using a single semiconductor material system to produce an accelerometer. A light beam is...
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...
7460242 Systems and methods for high-precision length measurement  
Provided are systems and methods for performing high-precision length measurement. One such system includes: an optical receiver, configure to receive a reflected optical pulse from a target; an...
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...
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...
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...
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)...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
5872628 Noise pair velocity and range echo location system  
An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high...
5798826 Optical displacement sensor  
A optical displacement sensor comprises optical output detecting unit for detecting an optical output from the semiconductor laser, which changes in accordance with the phase of return light...
5737069 Position detecting apparatus of optical interferometry  
A position detecting apparatus utilizing optical interferometry changes the wavelength of a light beam from the light source. The variation in the wavelength causes an increment and decrement Cx,...
5724130 Technique for the measurement and calibration of angular position  
The present invention relates to apparatus and methods for the precision measurement and calibration of a body such as a precision rotary table. It consists of at least one, or preferably a...

Matches 1 - 50 out of 109 1 2 3 >