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7515257 |
Short-range/long-range integrated target (SLIT) for video guidance sensor rendezvous and docking
A laser target reflector assembly for mounting upon spacecraft having a long-range reflector array formed from a plurality of unfiltered light reflectors embedded in an array pattern upon a...
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7502100 |
Three-dimensional position measurement method and apparatus used for three-dimensional position measurement
In three-dimensional measurement where circular polarized light or elliptical polarized light is projected as measurement light, correct measurement results can be obtained irrespective of the...
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7440585 |
Autonomous vehicle and motion control therefor
There are provided an autonomous vehicle, and an apparatus and method for estimating the motion of the autonomous vehicle and detecting three-dimensional (3D) information of an object appearing in...
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7385684 |
Angular position sensor
A head tracking system combines a plurality of sources of radiant energy, a plurality of sensors and at least one reflective element. As the reflective element moves, various radiant energy beams...
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7359041 |
Method and system for optically tracking a target using a triangulation technique
An optical position-tracking system comprises a first light beam steering device for sweeping a first light beam through a first angular range to cause a reflection of the first light beam by a...
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7330246 |
Tilt meter based on the field transmission through a resonator
Described is a tilt meter for monitoring angle shift in an incident signal. The tilt meter includes a resonator for receiving an incident signal from a signal transmitter and outputting a resonated...
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7233887 |
Method of photomask correction and its optimization using localized frequency analysis
A method of level assist feature OPC layout is described using frequency model-based approach. Through low-pass spatial frequency filtering of a mask function, the local influence of zero...
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7212294 |
Method for determination of the level of two or more measurement points, and an arrangement for this purpose
A method and arrangement for determining the level of at least two measurement points with a light beam direct along a first direction and being deflected through 90° with respect to the first...
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7023537 |
System for monitoring the movements of construction work parts
The invention relates to a system for monitoring the movements, if any, of construction work parts. It comprises:
a plurality of measurement taking stations (S 1 , S 2 . . . ) able to sight...
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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...
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6756581 |
Deviation detecting device, rotary laser apparatus with the same, and position determining system with deviation detecting/correcting device
The present invention is directed to a deviation detecting device that detects a deviation angle of a rotary unit of a laser light projector relative to a projector body. The deviation detecting...
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6741341 |
Reentry vehicle interceptor with IR and variable FOV laser radar
A dual mode seeker for intercepting a reentry vehicle or other target is disclosed. In one embodiment, the seeker is configured with an onboard 3D ladar system coordinated with an onboard IR...
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6693272 |
Light path deviation detecting apparatus and confocal microscope
A light path deviation detecting apparatus has a diverging element for diverging a detection target light path into two light paths, and detects light receiving position on light receiving surfaces...
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6678059 |
Apparatus for measuring 6-degree-of-freedom motions of rigid body by using three-facet mirror
An apparatus for measuring six-degree-of-freedom motions by using three-facet reflector, the six-degree-of-freedom motions of an object being measured by using the laser beam proceeding from a...
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6587191 |
In-action boresight
A method for boresighting of a designation system, including a tracker responsive to a detector with reference to an indicator, including the step of directing a beam of light at a target, using a...
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6437859 |
Device for detecting optical position
A device for detecting optical position, comprising a photodetection unit 40 having a photodetection optical axis 37 and for outputting a photodetection signal corresponding to a light...
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6435008 |
Apparatus and method for determining porosity
The present invention is related to an apparatus and a non-destructive method for determining the porosity of an element, particularly a thin film, formed on a substrate, said substrate being...
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6396608 |
Method and device for calibrating the deviation of a received beam from its desired position in a terminal
Method for calibrating the deviation of a received beam in a terminal from its desired position. The received beam reaches a receiving sensor, and an acquisition beam an acquisition sensor of the...
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6262800 |
Dual mode semi-active laser/laser radar seeker
The invention provides a method and apparatus for guiding a weapon to a target using an optical seeker having dual semi-active laser (SAL) and laser radar (LADAR) modes of operation. The dual mode...
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6249338 |
Laser survey instrument
A laser survey instrument, which comprises at least a main unit for emitting a laser beam and an object reflector for reflecting the laser beam from the main unit toward the main unit, whereby said...
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6133988 |
Device for the measurement of distances or of the angle of incidence of a light beam
The device for the measurement of distances and of the angle of incidence of a light beam comprises an optical emitting system in order to project the light beam onto the object to be measured, and...
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6097481 |
Bang-bang laser spot tracker
A "bang-bang", i.e. digital tracking system for a remote laser designated target having position, rate and acceleration errors. The system is responsive to the sign of the error signal (up/down,...
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6046800 |
Position detection surveying device
The present invention relates to a position detection surveying device for detecting a position of a target, and more particularly to a position detection surveying device which is most suitable...
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5978076 |
Reference light generator
A reference light generator that is capable of switching the scan plane of a laser beam between the horizontal and the vertical simply by changing the installation position of the reference light...
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5669580 |
Sensor device for a missile
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...
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5475600 |
Mobile robot which utilizes inertial navigation to calculate shortest return distance
A mobile robot with a navigation system using inertia includes a cylindrical reflecting plate disposed on the periphery of a compass for indicating a fixed direction regardless of the flow of the...
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5313409 |
Arrangement for performing position determination
An arrangement for one-man surveying, including a measuring station (1) and a target unit (2). A sighting-marker arrangement is provided which can be indicated by an indicator arrangement (7) on...
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5202742 |
Laser radar for a vehicle lateral guidance system
A laser radar apparatus for producing a pulse modulated transmitted light beam and receiving reflected light beams from road mounted retroreflectors. In the preferred embodiment, a floodlight beam...
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5166745 |
Rapid re-targeting, space-based, boresight alignment system and method for neutral particle beams
Apparatus and method are disclosed enabling to register vectors respectively representative of directed energy pointing direction and targeted object pointing direction to allow rapid re-targeting...
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5026156 |
Method and system for pulse interval modulation
A system and method for pulse interval modulating signals in accordance with a code wherein the code resides in the spacing between adjacent pulses. The invention has particular utility in...
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4886353 |
Measuring device employing laser interferometry
A measuring device employing laser interferometry, and featuring a device for tracking a mobile target; which tracking device is located between a light source and a semireflecting mirror, for the...
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4790651 |
Tracking laser interferometer
A system for tracking a randomly moving object using a laser beam and first and second beam steering assemblies. The steering assemblies pivot, respectively, about substantially perpendicular and...
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4764982 |
Secure communication system
A secure communication system uses narrow beam laser transmissions from a relay station high above the surface of the earth and another station which may be a submerged submarine. Position...
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4701050 |
Semiconductor exposure apparatus and alignment method therefor
A semiconductor focusing exposure apparatus in which an opposite face of a mask to a face to be illuminated by exposure light is illuminated with alignment light so that the light reflected from...
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4668089 |
Exposure apparatus and method of aligning exposure mask with workpiece
An exposure apparatus comprises a light source, a mask plate having an exposure pattern area section and an alignment/reflection area section, a projection lens, a movable stage for holding a...
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4600305 |
Dynamic energy centroid locator and processor (declp)
The laser source energy and the target source energy goes through a common ptical path to a beam splitter. The energy from the target source is filtered, allowing only the laser information to pass...
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4558949 |
Horizontal position detecting device
Disclosed is a horizontal position detecting device for maintaining the surface of a body to be inspected vertically to the optical axis of a main objective lens. The device includes an...
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4425037 |
Apparatus for projecting a series of images onto dies of a semiconductor wafer
The apparatus forms one-to-one reticle images on a wafer. The apparatus includes means for holding a reticle containing an image pattern corresponding to the size of the desired wafer pattern. An...
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4287412 |
Photoelectric direction finder
A photoelectric direction finder in which the modulating and spatial filtering functions produced by the reticles are separated from the deviation measurement function resulting from a four...
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4123651 |
Apparatus and method for speckle tracking
A laser radar system and method for tracking speckle generated by the interaction of a beam of coherent electromagnetic radiation with a target to enhance the signal to noise ratio of a return...
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4097007 |
Missile guidance system utilizing polarization
A missile guidance system in which a projectile or missile is fired toward predetermined target with the missile being tracked on its flight toward the target by radar, processing the radar...
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4090068 |
Process for the automatic adjustment of semiconductor wafers
In a method for the automatic adjustment of semiconductor wafers, adjustment marks are arranged on the surface of the wafer to be adjusted. Light is emitted through a transparent body with an...
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4065211 |
Precision X-ray diffraction system incorporating a laser aligner
An X-ray diffraction system for crystal analysis employing laser alignment o reduce errors inherent in the mechanical operation of the goniometer apparatus.
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3943359 |
Apparatus for relatively positioning a plurality of objects by the use of a scanning optoelectric microscope
A positioning apparatus comprising marks for position detection which are respectively formed on a plurality of objects, means to cause optical images of the position detecting marks from the...
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3885877 |
Electro-optical fine alignment process
Consistent optical signals are produced for an electro-optical fine alignment system by the use of an overcoating. The overcoating is reflective at the alignment wave lengths so that the coating...
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3865483 |
ALIGNMENT ILLUMINATION SYSTEM
The illumination optics for a dual channel electrooptical alignment system include crossed cylinder lenses to provide beams of light having elliptical cross sections and polarizers to pass only...
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3861807 |
POSITION LOCATING AND MAINTAINING METHOD AND MEANS
A locating technique employs a beam of concentrically patterned, varying intensity light to position one object, for example a hospital patient, with respect to a second object, such as a radiation...
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3804496 |
TWO DIMENSIONAL EYE TRACKER AND METHOD FOR TRACKING AN EYE
An eye tracker for continuously tracking orientation of the optic axis of an eye in which the eye is flooded with light so that Purkinje images are formed. Two of the Purkinje images are deflected...
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3796497 |
OPTICAL ALIGNMENT METHOD AND APPARATUS
An electro-optical mask and wafer alignment system employs alignment patterns on the mask and wafer whose images can be selectively passed through a spatial filter. Each pattern comprises at least...
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3762821 |
LENS ASSEMBLY
A method and apparatus are disclosed for assembling lenses using a computer-controlled autocollimator and lens manipulator. A lens element is first inserted into the manipulator and positioned at...
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