子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | INTERFEROMETRIC TRACKING DEVICE | US12057912 | 2008-03-28 | US20100002242A1 | 2010-01-07 | Richard A. Hutchin |
| An interferometric tracking device is disclosed. A first grating is optically coupled to a second grading such that the second grating is rotationally offset from the first grating. Imaging optics are adapted to image light passing through the first and second gratings onto a focal plane array. A plurality of wedge plates are optically disposed between the imaging optics and the second grating, such that the wedge plates generate a plurality of spots on the FPA when light from a point source is incident upon the first grating. | ||||||
| 102 | TRACKING DETERMINATION BASED ON INTENSITY ANGULAR GRADIENT OF A WAVE | US12424090 | 2009-04-15 | US20090259432A1 | 2009-10-15 | Matthew G. Liberty; Joseph S. Tanen |
| Handheld device, base station, computer readable medium and method for detecting a position of a handheld device. The method includes measuring intensities of at least one beam emitted by a base station; calculating relative intensities based on the measured intensities; and determining the position of the handheld device based on the measured intensities and the calculated relative intensities. | ||||||
| 103 | Apparatus and method for detecting the location, intensity and initiation time of an energy pulse | US10110651 | 2001-10-09 | US06841766B2 | 2005-01-11 | Leo R. Gauthier, Jr.; John M. Klimek; Angela L. Wesner-Barrios |
| A plurality of energy couplers (12) receives signals from an energy pulse, each of the energy couplers (12) having a defined field of view, the field of views of at least some of the energy couplers being overlapping. A transducer (14) converts the signals received from the energy pulse to voltage or current output signals that are then amplified. A threshold circuit (18) triggers when the amplitude of a signal caused by the energy pulse exceeds a predetermined level, and signal processing instrumentation (24) then calculates the source location and/or the intensity and/or the initiation time of the energy pulse based on the timing of the output signals associated with individual energy couplers (12). | ||||||
| 104 | Light detection apparatus | US09868493 | 2001-06-18 | US06590222B1 | 2003-07-08 | David Lindsey Bisset; Michael David Aldred; Stephen John Wiseman |
| Light detection apparatus for determining the location of a body within a predetermined area comprises at least two light detecting devices (10,10′,10″), supported on the body and capable of receiving light at points which are spaced about a central axis (8). The apparatus further includes means for supplying information representative of the level of light detected by each light detecting device (10, 10′, 10″). Information received from the light detection apparatus is compared with information previously received from the light detection apparatus and stored in a memory so as to identify when the light detected by the light detection apparatus is the same or substantially the same as light previously detected by the light detection apparatus. When used on an autonomous vehicle, this can allow the vehicle to determine when it has returned to a similar position in an area. The received light signals can be filtered or processed to derive information representative of different types of light (natural, incandescent) or colours of light. | ||||||
| 105 | Rotating shutter system for hostile laser source location technique | US07253099 | 1988-09-26 | US06281927B1 | 2001-08-28 | William F. Otto; Vernon H. Ayre; John K. Dempsey; Richard D. Milton |
| A hostile laser source location technique employs a television camera in conjunction with a rotating shutter to pinpoint the location of a hostile laser source without placing the pilot/operator at risk for eye damage. For an attack scenario the pilot/operator could then make changes in his tactics to negate the source or to continue his attack run. The shutter made of high optical density material (e.g., OD-4), except for an open aperture, provides optics protection for the camera system from both damage and dazzle. A detector is used to detect the laser pulse (flash) which immediately signals the proper frame to be frozen on a monitor. The laser source appears as a bright spot and is easily pinpointed. | ||||||
| 106 | Spatial interferometry | US09202947 | 1999-04-16 | US06188481B1 | 2001-02-13 | Balbir Kumar |
| An interferometer comprises a non-uniform beam splitter (34) which splits an incoming beam (30) of energy into two beams (36, 38). The two beams (36, 38) are taken from parts of the incoming beam (30) which overlap. The two beams (36, 38) are fed spacially separated energy feeds (44, 46) and then fed to a comparator to produce sum and difference channels (54, 58). The sum and difference channels (54, 58) are guided to a means for detecting a difference in phase (60) between the sum and difference channels (54, 58). | ||||||
| 107 | Wide field of view coherent light detector and locator | US899062 | 1997-07-23 | US5838441A | 1998-11-17 | Duane Satorius; Timothy Eugene Dimmick |
| The present invention is a wide field of view electro-optic detector and locator of coherent light of unknown wavelength that includes a collecting optic that collimates incoming optical radiation, a common-path electro-optic polarization interferometer placed at an exit pupil plane, an imaging optic, a detector array placed one focal length away from said imaging optic, an image processor that processes the incoming signal in a manner that is independent of the phase of the modulation signal, and an output device. The preferred collecting optic includes a first lens, a field lens, and a collimating lens. The preferred interferometer includes a first polarizer, a liquid crystal variable phase modulator, a fixed phase retarder, and a second polarizer. | ||||||
| 108 | Sensor device for a missile | US558832 | 1995-11-15 | US5669580A | 1997-09-23 | Werner Strauss |
| Described is a sensor device (10) for a missile (16) having a matrix detector (12) and an electronic evaluation circuit connected thereto. A ray source (20) is stationarily arranged on the missile (16). Provided between the ray source (20) and the matrix detector (12) which is stationarily provided on the missile (16) is a gyro optical device (22) which is cardanically mounted in the missile (16). The sensor device may be employed to determine the roll position and roll rate of a missile (16). | ||||||
| 109 | Passive means for single site radio location | US242699 | 1994-05-13 | US5444451A | 1995-08-22 | Richard L. Johnson; Q. Robert Black; Allan G. Sonsteby |
| The invention described herein relates generally to the field of direction finding and source location. The invention has broad application in areas requiring superresolution spectral analysis. The invention described in the context of any array processing problem in which the location of a transmitter is to be determined at a single receiving site based on passive measurements of the propagation waveform. The invention exploits the information received by a pair of sensors to extract intersensor delay and interpath delay times in the presence of multipath propagation. Two sensors are used in order to normalize the effects of signal modulation. Combining the sensor pairs in groups, the direction-of-arrival may be determined for each signal from the intersensor delay times thus derived. The invention additionally provides for the estimation of transmitter location by using the intersensor and interpath delay times. The invention is applicable in the context of array data processing to a number of areas including sonar, broadcast, communication, radar and satellite signal formats. | ||||||
| 110 | Laser warning device providing a direction of laser radiation | US107697 | 1993-12-06 | US5440116A | 1995-08-08 | Goran Bolander; Kurt Nissborg |
| A laser warning device for registering laser radiation from e.g. laser range finders or laser designators and providing a warning signal to make clear to the illuminated person that laser illumination has occurred or continues and establish the direction of incidence. A position sensitive detector or a position sensitive detector arrangement includes a detector surface that is protected from radiation that falls directly onto it, and a reflector. The reflector is designed to reflect towards the detector surface, while focusing towards the line of intersection between the detector surface and a plane that is perpendicular to the surface and in which the direction of incidence for the incoming radiation lies, the radiation that falls on the laser warning device and is parallel to the plane of the detector surface. The latter is defined as diverging not more than .+-.30.degree. from the plane. Further, the radiation may come from an arbitrary angle within the detector plane, up to 360.degree.. This leads to the arbitrary angle being determined by the position for the concentrated radiation energy. | ||||||
| 111 | Camera remote-controlling apparatus | US824335 | 1992-01-23 | US5235376A | 1993-08-10 | Akira Inoue; Masataka Ide; Hitoshi Maeno |
| In a camera remote-controlling apparatus, the incident angle based on a remote-controlling signal issued from a specific object to be photographed is detected by a signal receiving unit and the position of the object is operated and specified. The photographing optical system is driven to vary the focal length so that the specified object may enter the photographed picture. Further, distance measuring information for the object is detected by a distance measuring part, the photographing optical system is focused and, at the same time, light measuring information for the luminance of the same specified object is detected by, a light measuring part to control the exposure. | ||||||
| 112 | Precision angle sensor | US557421 | 1990-07-23 | US5110210A | 1992-05-05 | Theodore D. Fay; William F. Morgan; Stanley Schneider |
| Optical apparatus for measuring angles to a precision approaching the theoretical optical limit for a fixed aperture. Calculations and measurement of the angle are made on the basis of the displacement of a very detailed waveform on a multi-pixel detector from a known point on the detector. The angle this displacement represents is created by the angular displacement of a dispersive element attached to the object of interest. The beamline comprises an optical source, the dispersive element on the object, and a spectrometer which contains an echelle and the detector. The known point on the detector is established by aligning the beamline to a fiducial angle. | ||||||
| 113 | Tracker using angle-converting cones | US484375 | 1990-02-23 | US5023440A | 1991-06-11 | John D. Kuppenheimer, Jr. |
| An optical tracker includes a plurality of detectors (20, 22), each of which is associated with an etendue-preserving concentrator (27, 28) that directs radiation to it. The concentrators (27, 28) associated with complementary detectors (20, 22) are oriented at angles with respect to each other such that their complementary angle-sensitive regions overlap. As a consequence, the outputs of the detectors can be used to aim the tracker even though the concentrators direct radiation to the detectors in a non-imaging manner. | ||||||
| 114 | Integrated-optics implementation of an interferometric spectrum analyser | US254928 | 1988-10-07 | US4909627A | 1990-03-20 | Nicole Brousseau |
| An improved interferometric spectrum analyser system with direction finding capabilities for an emitting source, the type having a holographic element to provide a laser beam source for the system. The laser beam from the source is focused on a light waveguide within which are arranged in asymetrical configuration with respect to the direction of the laser beam source a plurality of antenna signal transducers and a plurality of reference signal transducer, the antenna signal transducers and the reference signal transducers respectively being arranged in adjacent rows in such a manner as to provide acoustic signals propagating in the same direction within the transducer. A lens assembly is positioned with respect to the light waveguide so as to provide a one-dimensional Fourier transform signal on the X-axis of the waveguide by causing the mixing of the Fourier transform signal of the antenna signal and the Fourier transform signal of the reference signal. The analyser according to the present invention is more compact and less sensitive to vibration than currently available systems. | ||||||
| 115 | Apparatus for determining the position of an object in an arbitrary cross-section of a beam of radiation | US39761073 | 1973-09-14 | US3881105A | 1975-04-29 | DE LANG HENDRIK; DANDLIKER RENE |
| Two virtual or real spatially separated sources of coherent radiation polarized at right angles to one another and having a time-dependent complex-amplitude difference used in conjunction with a polarization-sensitivie detection system disposed in the vicinity of an object form an apparatus for determining the relative position of the object with respect to the radiation sources. Optical systems where the virtual sources of radiation are formed by passing coherent radiation having a rotating plane of polarization through a polarization dependent beam splitting device, and an electrical system where the radiation sources are two plane polarized aerials transmitting high frequency electromagnetic radiation modulated by low frequency signal sources oscillating in phase quadrature are shown.
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| 116 | Device for determining relative angular position between a spacecraft and a radiation emitting celestial body | US3744913D | 1972-02-24 | US3744913A | 1973-07-10 | FARTHING W; FRISBIE H |
| Signals indicative of the relative angular position between a spin stabilized spacecraft, probe, or sounding rocket and a radiation emitting celestial body are derived with a detector including four electrodes for deriving indications of the centroid the radiation image on the detector. During each spin of the satellite each electrode derives a signal having a first non-zero level while the detector is not illuminated by the radiation and a sound non-zero level while it is illuminated by the radiation. The first level is indicative of dark current, while the second level is dependent upon dark current, the angular position of the centroid of the image on the detector surface relative to the electrode, and the intensity of the radiation impinging on the detector. A processing network, including a negative feedback loop, responds to the signal to derive, during each spin of the spacecraft, a signal indicative of the dark current. The dark current indicating signal is combined, in the feedback loop, with the electrode output to derive an output signal having a substantially zero value while the dark current is being generated. The image of the body is formed on the detector surface with a pinhole.
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| 117 | Astronomic survey apparatus and method | US3713740D | 1967-09-20 | US3713740A | 1973-01-30 | LILLESTRAND R; CARROLL J |
| A passive star detection device comprising an optical system photodetector means and a transparent slit pattern for receiving the star radiation, and a computer for analyzing the received star radiation and calculating the azimuth and position of the device on the surface of the earth.
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| 118 | Alignment telescope | US3658426D | 1968-09-11 | US3658426A | 1972-04-25 | VYCE JOSEPH RICHARD |
| An electro-optical alignment telescope is disclosed which is adapted to detect lateral displacement of an object having a retroreflector mounted thereon by imaging an illuminated nose portion of a truncated prism on such reflector and imaging back the reflected light on the prism. Light reflected from the sides of the prism is detected and measured to provide information on the amount and direction of lateral displacement.
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| 119 | Interferometric daylight star tracker | US3626192D | 1969-08-15 | US3626192A | 1971-12-07 | HELD DANIEL N |
| A star tracker having an aperture for receiving and diffracting starlight and daylight. Interference fringes are formed form the starlight because of its coherent nature. A phase shifter is positioned to intercept a portion of the diffracted light and phase shift the intercepted light in response to a signal causing the interference fringes to be modulated in accordance with the signal. Photodetectors sense the fringe modulation and provide modulated outputs which are demodulated to provide DC voltages corresponding to the intensity of the detected interference fringes. The DC voltages are subtracted and the remainder used to energize a servo to aim the star tracker at a star.
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| 120 | Optical reference apparatus utilizing a cluster of telescopes aimed at a selected group of stars | US3448272D | 1965-10-23 | US3448272A | 1969-06-03 | SLATER JOHN M |
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