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ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT

Subclass of:

356 - Optics: measuring and testing

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
356139100 Photodetection of inclination from level or vertical 18
356139090 Wheel alignment with photodetection 18
356152100 With photodetection remote from measured angle 11
356139040 Automatic following or aligning while indicating measurement 9
356140000 Apex of angle at observing or detecting station 9
356139030 Relative attitude indication along 3 axes with photodetection 6
356153000 Alignment of axes nominally coaxial 6
356139000 Plural scales or different portions of same scale simultaneously observable 3
20110128530ROTATION AND DIFFERENTIAL ANGLE OPTICAL SENSOR WITH INTEGRAL BEARING RACES - A sensor may simultaneously sense the angular position of a first rotatable member relative to a frame of reference and the angular position of a second rotatable member relative to the first rotatable member. The sensor may include a first and a second disk, each of which have an annular pattern which alternates between two different levels of optical transparency. The first disk may be coupled to the first rotatable member; and the second disk may be coupled to the second rotatable member. The first and the second disks may each have an integral annular race configured to support ball bearings.06-02-2011
20110128529ROTATION AND DIFFERENTIAL ANGLE OPTICAL SENSOR WITH NON-TRANSITION PATTERN SAMPLING - A sensor may simultaneously sense the angular position of a first rotatable member relative to a frame of reference and the angular position of a second rotatable member relative to the first rotatable member. The sensor may include a first and second disk, each having an annular pattern which alternates between two different levels of optical transparency. One disk may be coupled to the first rotatable member, the other disk may be coupled to the second rotatable member. A signal processing system may determine both angular positions based on sampling a consolidation of the first and the second annular patterns at locations that are not at a transition in the consolidated pattern.06-02-2011
20110128531ROTATION AND DIFFERENTIAL ANGLE OPTICAL SENSOR WITH SHORT OPTICAL SENSING ARRAY - A sensor may simultaneously sense the angular position of a first rotatable member relative to a frame of reference and the angular position of a second rotatable member relative to the first rotatable member up to a maximum displacement angle. The sensor may include a first and a second disk, each of which have an annular pattern which alternates between two different levels of optical transparency. The first disk may be coupled to the first rotatable member; and the second disk may be coupled to the second rotatable member. A lighting system may direct light toward the first and the second disks with an orientation that causes an annular illumination pattern to be cast upon an optical sensing array which corresponds to a composite of a portion of the first and the second annular patterns and which spans an angle that is less than or equal to the maximum displacement angle. An optical sensing array may provide signals indicative of the annular illumination pattern. The optical sensing array may have a length which is not substantially greater than the width of the annular illumination pattern cast upon the optical sensing array.06-02-2011
356139010 Star/Sun/Satellite position indication with photodetection 2
20100208245APPARATUS AND METHOD FOR A LIGHT DIRECTION SENSOR - The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that as light passes through the slit pattern it casts a diffraction pattern onto the image sensor. The method operates by receiving a beam of light onto a patterned mask, wherein the patterned mask as a plurality of a slit segments. Then, diffusing the beam of light onto an image sensor and determining the direction of the light source.08-19-2010
20100208244FLASH LADAR SYSTEM - The present invention pertains in general to a single, integrated flash LADAR system and method. The system includes data processing hardware and software, a passive two-dimensional camera, a three-dimensional camera, a light source, and a common optical path. One or more star trackers can also be included. In addition, auxiliary components, such as an inertial measurement unit and a global positioning system receiver can be included. The system can be closely integrated with a critical algorithm suite that operates in multiple modes, in real-time to enable landing, docking, and navigation functions, such as Guidance, Navigation, and Control (GNC), Altimetry, Velocimetry, Terrain Relative Navigation (TRN), Hazard Detection and Avoidance (HDA), and dust penetration.08-19-2010
356154000 With screen 2
20090109426SELF-COMPENSATING LASER TRACKER - A self-compensating laser tracker may include a frame assembly including a laser, and at least two-embedded, non-moveable, reflecting members; and a rotatable mirror. The laser and the mirror are arranged such that a laser beam emitted from the laser may be reflected by the mirror. One of the at least two reflecting members may be a cube corner retroreflector and a second of the at least two reflecting members may be a frame assembly mirror. The cube corner retroreflector and the frame assembly mirror may be fixed in position on the frame assembly relative to the rotatable payload and relative to each other, and are structured to reflect the laser beam in a frontsight mode and a backsight mode.04-30-2009
20090231574METHOD AND SYSTEM FOR ANGLE MEASUREMENT - An angle measurement device includes a light source configured to emit light along an optical path and a patterned member positioned along the optical path and configured to rotate about an axis of rotation. The patterned member includes a periodic optical variation. Light passing through the patterned member provides a spatially modulated optical waveform. The angle measurement device also includes an imaging device positioned along the optical path and including a plurality of photosensitive elements disposed in an array configuration. The imaging device is configured to receive the spatially modulated optical waveform and provide a signal associated with light intensity at each of the plurality of photosensitive elements. The angle measurement device further includes an angle determination unit coupled to the imaging device and configured to compute a rotation angle of the patterned member based on a reference waveform and the provided signal.09-17-2009
Entries
DocumentTitleDate
20130083317IMAGE ACQUISITION APPARATUS, IMAGE ACQUISITION METHOD, AND MICROSCOPE - An image acquisition apparatus includes an image-forming optical system configured to form an image of an observation area in a plane of a subject, an image sensor including a light receiving surface configured to capture an image of the observation area formed by the image-forming optical system, and a rotation unit configured to rotate at least one of the subject and the image sensor within a plane perpendicular to an optical axis of the image-forming optical system. By driving of the rotation unit, the image acquisition apparatus changes a relative position of the observation area and the light receiving surface within the plane perpendicular to the optical axis of the image-forming optical system, to capture an image of an area in the observation area not captured at a time of image capturing before driving of the rotation unit.04-04-2013
20130044315MASKLESS EXPOSURE APPARATUS AND SPOT BEAM POSITION MEASUREMENT METHOD USING THE SAME - A maskless exposure apparatus which precisely and rapidly measures positions of spot beams of a plurality of optical systems by calculating positions of respective BMSs using a plurality of FMs engraved on an FBA on a movable table. The centers of the respective BMSs are aligned with the centers of random FMs of the plurality of FMs. Thereafter, positions of spot beams irradiated from the plurality of optical systems are quickly and precisely measured using the positions of the respective BMSs and the positions of the FMs measured by the BMSs, thereby more quickly generating mask data to execute maskless exposures.02-21-2013
20110194103DEVICE AND METHOD FOR MEASURING AND ALIGNING A FIRST COMPONENT AND A SECOND COMPONENT IN RELATION TO EACH OTHER - The invention relates to a device (08-11-2011
20090122301Light angle detection device, method for fabrication thereof and electronic device employing same - A light angle detection device according to an embodiment of the present invention includes a first light receiving lens, a first light sensing element, a second light receiving lens, and a second light sensing element. The first and second light receiving lenses and the first and second light sensing elements are disposed such that a first straight line passing through the center of the light receiving surface of the first light sensing element and the vertex of the first light receiving lens, a second straight line passing through the center of the light receiving surface of the second light sensing element and the vertex of the second light receiving lens, and a third straight line passing through the center of the light receiving surface of the first light sensing element and the center of the light receiving surface of the second light sensing element form an isosceles triangle.05-14-2009
20130033704LIGHT SOURCE TRACKING IN OPTICAL METROLOGY SYSTEM - The present invention may include loading a diagnostic sample onto a sample stage, focusing light from an illumination source disposed on a multi-axis stage onto the diagnostic sample, collecting a portion of light reflected from a surface of the diagnostic sample utilizing a detector, wherein the illumination source and the detector are optically direct-coupled via an optical system, acquiring a set of diagnostic parameters indicative of illumination source position drift from the diagnostic sample, determining a magnitude of the illumination source position drift by comparing the acquired set of diagnostic parameters to an initial set of parameters obtained from the diagnostic sample at a previously measured alignment condition, determining a direction of the illumination source position drift; and providing illumination source position adjustment parameters configured to correct the determined magnitude and direction of the illumination source position drift to the multi-axis actuation control system of the multi-axis stage.02-07-2013
20130155396OPTICAL MEASURING SENSOR - An optical detector may include an aperture, at least two photodetectors, and a measuring arrangement to quantify light detected at the photodetectors after passing through the aperture without the need for a lens. The aperture may be positioned between a light source and the two photodetectors to allow light from a light source to pass through the aperture to the photodetectors. The photodetectors may include PIN junction photodiodes and may be electrically isolated from each other, positioned next to each other in a side-by-side configuration, and then aligned with the aperture so that a proportion of the quantified light detected at the photodetectors changes as an angle of light from the light source incident to the aperture changes. Optical detectors and methods are provided.06-20-2013
20130070238MICRO-RADIAN CLASS LINE OF SIGHT AND CENTRATION STABILIZATION SYSTEM - This document discusses apparatus and methods for aligning and centering an articulated laser projection system. In an example, a laser projection system can include an alignment stabilization system configured to align an optical path to a reference and a centration stabilization system configured to center the optical path within an aperture. The alignment stabilization system can have an alignment stabilization processing path configured to receive alignment information from an alignment sensor, and the centration stabilization system can have a centration stabilization processing path configured to receive centration information from a centration sensor.03-21-2013
20120188534Angle-Measuring Device - An angle-measuring device includes a first group of components and a second group of components that are rotatable relative to each other about an axis. The first group includes a carrier element for enclosing a shaft and on which a graduation disk is secured, a connecting element, and a device for affixing the connecting element relative to the carrier element. The second group includes a sensor element for scanning the graduation disk. The carrier element and the connecting element are arranged such that the connecting element is able to be brought into operative connection with the carrier element so that torque is transmittable with positive locking between the connecting element and the carrier element about the axis. The connecting element is able to be brought into a positive-locking position by axial displacement by the device for affixing the connecting element, and is able to be prestressed radially against the shaft.07-26-2012
20090237650Optical unit and measuring instrument - An optical unit includes: an objective lens; an imaging lens that is arranged in the optical axis of the objective lens and images a light beam output from the objective lens; a plurality of afocal optical systems that are arranged between the objective lens and the imaging lens and have different afocal magnifications; and a switch that shifts either one of the afocal optical systems to be aligned with the optical axis of the objective lens.09-24-2009
20100026994REFLECTION OPTICAL SENSOR FOR DETERMINING THE ANGULAR POSITION OF A ROTATING ELEMENT - The optical device for determining the angular position of a rotating element comprises: a concave mirror (02-04-2010
20110279813ALIGNMENT METHOD FOR AN IMAGE READING APPARATUS - Provided is an alignment method for an image reading apparatus including: a light source unit illuminating an original on an original table; a photoelectric conversion element for converting an optical image into an electric signal; and an imaging optical system for imaging, onto the photoelectric conversion element, a light beam from the illuminated original. The imaging optical system includes: a first optical element, arranged inside a first lens barrel, and having an optical surface that is rotationally symmetric about an optical axis; and a second optical element, arranged on an optical path between the first lens barrel and the photoelectric conversion element, and having an optical surface rotationally asymmetric about the optical axis. The alignment method includes aligning at least one of an attaching angle and an attaching position of the second optical element in a sub scanning direction relative to the first lens barrel.11-17-2011
20100201970CABLE FLEET ANGLE SENSOR - A method and system for monitoring a fleet-angle of a cable. An embodiment may monitor the fleet-angle of a cable being spooled or unspooled in multiple radial directions and without use of a mechanical monitoring apparatus. The method and system may employ a fleet angle sensor device having a bell-shaped aperture across which propagate one or more collimated light beams that may be used to detect excessive fleet-angle of the cable. The light beams may be generated by a fleet-angle sensor disposed in the fleet angle sensor device proximate to the aperture. Various light-beam patterns within the aperture may provide different advantages when determining deviations of the cable from the aperture center axis.08-12-2010
20100118296JETSTACK PLATE TO PLATE ALIGNMENT - An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment.05-13-2010
20110170088Sensors, Systems and Methods for Position Sensing - Various systems and methods for estimating the position of a radiation source in three-dimensional space, together with sensors for use in such systems are described. In some embodiments, the systems include a plurality of radiation sensors. The three-dimensional position of the radiation source is estimated relative to each sensor using an aperture that casts shadows on a radiation detector as a function of the incident angle of the incoming radiation. In some embodiments, the ratio of a reference radiation intensity to a measured radiation intensity is used to estimate direction of the radiation source relative to the sensor. When the angular position of the radiation source is estimated relative to two sensors, the position of the radiation source in three dimensions can be triangulated based on the known relative positions of the two sensors.07-14-2011
20120293792OPTICAL ANGULAR POSITION DETECTION APPARATUS AND METHOD - An annular position detection method provides a plurality of light emitters on a first imaginary circle centered on an axis, the emitters directing individual, well-defined, overlapping light beams to a pair of light detectors positioned on a second imaginary circle centered on that axis. The detectors include pairs of diametrically opposite photosensors producing outputs depending upon the areas thereof exposed to light from the emitters. A light blocker is rotatably mounted on the axis so that the blocker blocks light to different extents of the photosensors depending upon its orientation about the axis. The outputs from all of the photosensors are processed to produce a position signal that varies with the angular position of the blocker and the relative intensities of the emitters are adjusted so that the position signal is substantially linear at all operative angles of the blocker. Apparatus for practicing the method is also disclosed.11-22-2012
20090033921PIPING ALIGNMENT TOOL - A piping alignment tool suitable for locating where an extension of an existing pipe must pass through obstructions such as walls. The tool has a tubular shape with oppositely disposed ends. Each end is formed to have multiple coaxial sets of different-sized pipe threads that allow the tool to be threaded onto a pipe having one of the pipe thread sizes formed on the tool. The tool is also equipped to generate light beams from each end, so that the light beam can be emitted from an end of the tool opposite a pipe onto which the tool has been threaded. By threading the tool onto a pipe and emitting a light beam from the end of the tool opposite the pipe, the location of an obstruction beyond the existing pipe is illuminated by the emitted light beam.02-05-2009
20080278714RUDDER ANGLE DETECTING DEVICE OF STEERING GEAR - The inner cylindrical body is mounted on the top surface of the rudder-stock; the outer cylindrical body is put on the inner cylindrical body exteriorly; the gudgeon pin provided on the top reverse surface of the outer cylindrical body is inserted into the gudgeon provided on the top surface of the inner cylindrical body; the pin protruded on the top surface of the outer cylindrical body is inserted into the chest fixated to the supports; the rotational movement checking device, that obstructs the pin to rotate, and at the same time, permits it to be displaced in the radial direction, is provided inside the chest; the scale is provided on the outer circumferential surface of the inner cylindrical body; and, the rudder angle detecting optical sensors facing the scale are mounted on the inner circumferential surface of the outer cylindrical body.11-13-2008
20080291434Optoelectric Angle-Measuring Device - An optoelectric angle-measuring device according to the invention has a code carrier having a position code (C11-27-2008
20080266552Method and apparatus for assessing head pose of a vehicle driver - The head pose of a motor vehicle driver with respect to a vehicle frame of reference is assessed with a relative motion sensor positioned rearward of the driver's head, such as in or on the headrest of the driver's seat. The relative motion sensor detects changes in the position of the driver's head, and the detected changes are used to determine the driver's head pose, and specifically, whether the head pose is forward-looking (i.e., with the driver paying attention to the forward field-of-view) or non-forward-looking. The determined head pose is assumed to be initially forward-looking, and is thereafter biased toward forward-looking whenever driver behavior characteristic of a forward-looking head pose is recognized.10-30-2008
20130120744AUTOMATIC ANGLE ADJUSTMENT UNIT FOR USE IN OBJECT DETECTION DEVICE - An automatic angle adjustment unit (05-16-2013
20080316471DETERMINING AZIMUTH ANGLE OF INCIDENT BEAM TO WAFER - A method, system and computer program product for determining an Azimuth angle of an incident beam to a wafer are disclosed. A method comprises: using the incident beam to make a first set of measurements of calibration targets of a first set of grating angles that are different than one another; analyzing the first set of measurements to determine an reference grating angle which corresponds to a grating line to which the incident beam has a practically zero Azimuth angle; and determining the Azimuth angle of the incident beam to the wafer using the determined reference grating angle.12-25-2008
20090219518OPTIMIZING USE AND PERFORMANCE OF OPTICAL SYSTEMS IMPLEMENTED WITH TELECENTRIC ON-AXIS DARK FIELD ILLUMINATION - Systems and methods are provided for imaging a planar specular object such as a semiconductor wafer. In one embodiment, an imaging system for imaging a defect on a planar specular object includes a telecentric lens having a sufficiently aspherical surface such that the telecentric lens is substantially corrected for an optical aberration. The imaging system also includes a telecentric stop including an aperture therein to block light reflected from the planar specular object while allowing light reflected from the defect to pass through the aperture. The imaging system further includes a lens group having a system stop positioned between the telecentric stop and the lens group. The lens group is substantially corrected for the optical aberration independent of the telecentric lens.09-03-2009
20100149524Method and Device for Determining the Position of a Sensor - The present invention relates to a method and a device for determining the spatial position of a sensor, in which a rough position information initially is determined by rough detection of the position of the sensor, and then the more accurate position of the sensor is obtained by measuring at least three reflectors mounted on the sensor with a laser tracker, wherein the search region of the laser of the laser tracker is limited for the reflectors with reference to the rough position information.06-17-2010
20100165331METHOD FOR OBTAINING INCIDENT ANGLE - A method for obtaining an incident angle θ07-01-2010
20100182595THREE DIMENSIONAL LIGHT MEASURING APPARATUS - A three dimensional light measuring apparatus, and more particularly, to a light measuring apparatus that three dimensionally measures the light emitted from an optical object without moving the optical object or the light measuring apparatus using a hemispherical scattering unit having a scattering layer is provided. The three dimensional light measuring apparatus includes a scattering unit including a scattering layer, a light sensing unit separated from the emission surface of the scattering unit by a predetermined distance to sense light emitted through the scattering unit, to convert the sensed light into an electrical signal, and to output the electrical signal, and a baffle that surrounds an edge of the incidence surface of the scattering unit to prevent external light from being radiated onto the incidence surface of the scattering unit, that forms a space so that the light emitted from the object is incident on the incidence surface of the scattering unit, and whose surface facing the incidence surface of the scattering unit is blackened to prevent the incident light from being reflected. The light measuring apparatus in which the hemispherical scattering unit having the scattering layer is used is provided so that it is possible to three dimensionally measure the light emitted from the optical object without rotating the optical object or the light measuring apparatus.07-22-2010
20100238430 LIGHT ANGLE SELECTING LIGHT DETECTOR DEVICE - This invention relates to a light angle selecting light detector device comprising a detector unit which is arranged to receive light selected by a selector unit. The device comprising at least one set of light passing areas. Each set of light passing areas consists of a first light passing area having a first size, which first light passing area is located on a first surface, and a second light passing area having a second size, which second light passing area is located on a second surface. The first light passing area and the second light passing area are arranged with a lateral displacement and form a light path from the first surface to the second surface for light having an incident angle between a maximum angle and a minimum angle.09-23-2010
20110128527PARTICLE-MOVING TYPE ORIENTATION SENSOR - A particle-moving type orientation sensor including a housing, at least one light emitter, two light receivers, and a plurality of particles. The housing has an accommodating space having four zones, which are circularly arranged. A first opening is formed on the housing and connecting to a first zone. Two second openings are formed on the housing and respectively connecting to a second zone and a fourth zone. The light emitter emits light into the accommodating space through the first opening. The light receivers respectively receive light from the accommodating space through the second openings. The particles are arranged in the accommodating space. While the particle-moving type orientation sensor is tilting, the light emitter is partially blocked by the particles, and one of the light receivers is partially blocked by the particles, the light receivers respectively receive light with predetermined intensities and output electric signals with predetermined strengths.06-02-2011
20130135612Process and Device for Measuring the Rotation Angle of Two Objects Rotating in Relation to Each Other - The disclosure relates to a process for measuring the rotation angle of two objects rotating in relation to each other, with a transmitter assigned to one of the objects, and with an element which influences the direction of polarization, where the transmitter and the element rotate relative to each other, and where the luminous intensity passing through, or reflected by, the element is measured by a receiver and then evaluated as a signal dependent on the rotation angle, and where the receiver groups of receiver elements sensitive to polarization, and where the polarization planes of the receiver elements in each group are rotated in relation to each other, and where the reception signals of at least two of the receiver elements are evaluated independent of each other in a monitoring mode. The disclosure also relates to an apparatus for implementing the process.05-30-2013
20110128528ROTATION AND DIFFERENTIAL ANGLE OPTICAL SENSOR WHICH DOES NOT REQUIRE KEYED INSTALLATION - A sensor may simultaneously sense the angular position of a first rotatable member relative to a frame of reference and the angular position of a second rotatable member relative to the first rotatable member up to a maximum displacement angle. The sensor may include a first and a second disk, each of which have an annular pattern which alternates between two different levels of optical transparency. The first disk may be coupled by a first coupling to the first rotatable member; and the second disk may be coupled by a second coupling to the second rotatable member. The first and the second annular patterns may be configured such that the angular displacement of the second rotatable member relative to the first rotatable member angle is accurately indicated by the sensor up to the maximum displacement angle, regardless of how the first annular pattern is aligned with respect to the second annular pattern at the time the couplings are coupled to their respective rotatable members.06-02-2011
20110085160SPECTRAL DETECTOR WITH ANGULAR RESOLUTION USING REFRACTIVE AND REFLECTIVE STRUCTURES - A detector for receiving light impinging at a reception point and for measuring, for a plurality of angles of incidence, at least one property of the light. The detector includes a plurality of light sensors, each of which is associated with an acceptance interval (which defines the angle of incidence which a light beam must have to reach the light sensor) and at least two acceptance intervals are different from one another. The detector further includes an optical conductor for conducting a light beam from the reception point to a particular light sensor, but only if the angle of incidence of the light beam belongs to the acceptance interval associated with the particular light sensor.04-14-2011
20120229799STRUCTURAL UNIT OF A ROTARY ENCODER, AND METHOD FOR PRODUCING THIS STRUCTURAL UNIT - A structural unit for a rotary encoder. The structural unit including a graduation carrier fastened to a mount that includes a recess and a positioning element fastened to the graduation carrier by a first material connection. The positioning element is disposed in the recess, and the recess is dimensioned such that the recess positions the positioning element in a radial direction without play. The structural unit further including a second material connection is provided between the graduation carrier and the mount.09-13-2012
20120147360Systems And Methods For The Angular Orientation And Detection of Containers In Labelling Machines - Systems and methods for the angular orientation and detection of containers being processed in labeling machines are provided.06-14-2012
20110188031DISTRIBUTED JAMMER SYSTEM - According to some embodiments of the invention a laser directed infrared countermeasures system (hereinafter: “LDIRCM system”) is mountable on a platform. According to some embodiments of the invention, a LDIRCM system may include a plurality of sector units. Each sector unit may include at least one laser unit and a laser guidance module. The laser unit may be adapted to generate a laser beam or laser energy that is intended for jamming a guidance system of a threat. The laser unit may be coupled to the laser guidance module. The laser guidance module may be adapted to steer at least a laser beam generated by the laser unit towards a threat.08-04-2011
20100020313Tilt inspection apparatus and method of inspecting tilt - A tilt inspection apparatus which detects tilt of an object to be observed with respect to a placement surface on which the object is placed, including: a light source which irradiates light or projects an image onto the object to be observed; a light shield plate which has a first slit extended in a first direction and a second slit extended in a second direction normal to the first direction, and is disposed between the light source and the object to be observed; and a carriage mechanism which supports the light shield plate so as to be rotatable in the in-plane direction of the light shield plate, and fixes the light shield plate while aligning the first slit normal to the placement surface is provided.01-28-2010
20090046278Real Time Telecentricity Measurement - Systems and methods are provided for measuring and correcting for a given telecentricity in lithographic apparatus. A radiation beam is partitioned into a plurality of beams, each of which is modulated using an array of individually controllable elements and projected onto a portion of a substrate through a projection system. A set of alignment beams are transmitted simultaneously on paths similar to those traversed by the plurality of radiation beams, and a corresponding set of sensors respectively measures an angle and a position of the set of alignment beams proximate an entrance of the projection system. An assembly of telecentricity control mirrors (TCMs) adjusts appropriate ones of the plurality of radiations beams in response to the measurement to correct for induced any detected telecentricity.02-19-2009
20120099100AUTOMATED WARM-UP AND STABILITY CHECK FOR LASER TRACKERS - A method for determining when a laser tracker is stable includes performing a plurality of first frontsight measurements and a plurality of first backsight measurements on a first target with the laser tracker, wherein the plurality of first frontsight measurements and the plurality of first backsight measurements are alternated in time, calculating a plurality of first two-face errors based on the plurality of first frontsight measurements and the plurality of first backsight measurements, determining at least one first stability metric based at least in part on the plurality of first two-face errors, the at least one first stability metric being a value defined by a rule, determining whether the laser tracker is stable based at least in part on the at least one first stability metric and a first termination criterion and generating an indication whether the laser tracker is stable or not stable.04-26-2012
20110075132ANGLE-CLEAVED OPTICAL FIBERS AND METHODS OF MAKING AND USING SAME - Optical fibers comprising a plurality of cleaved facets disposed at one end are disclosed. First and second facets of the plurality of cleaved facets are disposed at different angles. The optical fiber with the plurality of cleaved facets splits light from an optical component between an optical fiber core and a detector such that a portion of the light may be tapped off for monitoring. The first cleaved facet is disposed at a first angle such that a first portion of the light from an optical component is totally internally reflected into the fiber core. A second cleaved facet can be disposed at a second angle that is less than the first angle so that a second portion of light from the optical component refracts through the second facet to a detector. Methods of forming and using angle-cleaved optical fibers having a plurality of cleaved facets are also disclosed.03-31-2011
20120008136GEODESIC MEASUREMENT SYSTEM AND METHOD FOR IDENTIFYING A TARGET UNIT HAVING A GEODESIC MEASUREMENT DEVICE - A geodesic measurement system having a geodesic measurement device. A unique identification code is allocated to each of the target objects, such that the target objects can be differentiated from one another based on the identification code. The measurement device has a distance and angle measurement functionality for determining the position of the target objects. The measurement device is designed for emission of the beam such that the identification code of a target object that is searched for from the target object volume can be modulated to the beam as a code to be searched for. The target unit has an evaluation component connected to the detector for inspecting correspondence between the code modulated to the beam and the own identification code of the target unit and a transmission component for transmission of a reactive confirmation signal to the geodesic measurement device that takes place upon correspondence being determined.01-12-2012
20100128259DEVICE AND METHOD FOR MEASURING SIX DEGREES OF FREEDOM - A laser tracker system for measuring six degrees of freedom may include a main optics assembly structured to emit a first laser beam, a pattern projector assembly structured to emit a second laser beam shaped into a two-dimensional pattern, and a target. The target may include a retroreflector and a position sensor assembly. A center of symmetry of the retroreflector may be provided on a different plane than a plane of the position sensor assembly. A method of measuring orientation of a target may include illuminating the target with a laser beam comprising a two-dimensional pattern, recording a position of the two-dimensional pattern on a position sensor assembly to create a measured signature value of the two-dimensional pattern, and calculating an orientation of the target based on the measured signature value.05-27-2010
20120013895METHOD AND APPARATUS FOR MULTIPLE FIELD-ANGLE OPTICAL ALIGNMENT TESTING - Various embodiments provide an optical alignment apparatus that includes a mirror structure having a plurality of mirrors, the mirror structure being configured for mounting a lens. The plurality of mirrors are arranged so as to redirect a collimated beam of radiation into the lens at different angles so as to measure one or more alignment parameter of the lens.01-19-2012
20120026487OPTICAL ARRANGEMENT FOR TRACKING DETECTOR - A system and method of reducing turbulence sensitivity in a laser spot detector. Embodiments may include using beam splitters, reflectors, and beam deviators. The reflectors may be trihedral reflectors and the beam deviators may be segmented wedge plates having predetermined physical angles and angle directions in each wedge segment designed to produce opposing blurs for each segment of the aperture. A predetermined blur introduced into each line of sight eliminates the need for de-focus, thereby mitigating effects such as centroid shift caused by turbulence or dirty/damaged sensor apertures.02-02-2012
20120105833SYSTEM AND METHOD FOR TESTING LENS MODULE - A system for testing a lens module is provided. The lens module includes a barrel and a lens received in the barrel. The barrel includes a side surface which is parallel to the central axis thereof. The lens includes a smooth flat non-optical surface. The system includes an alignment device, a position detection device, and a processing device. The alignment device includes a leveling unit and an alignment block including an alignment surface for being in contact with and parallel to the side surface. The leveling unit adjusts the alignment surface to be perpendicular to a horizontal plane such that the side surface is perpendicular to the horizontal plane. The position detection device determines the three dimensional coordinates of three non-collinear points on the non-optical surface. The processing device determines whether the non-optical surface is parallel to the horizontal plane according to the coordinates of the three non-collinear points.05-03-2012
20120105832ANGLE MEASUREMENT FOR A WIDE FIELD-OF-VIEW (WFOV) SEMI-ACTIVE LASER (SAL) SEEKER - A SAL seeker focuses laser energy reflected off a target into a spot on the surface of a multi-segment non-imaging detector. A matched filter is responsive to the normalized detector response to estimate an angle measurement to the target. The matched filter is particularly well-suited for use in wide FOV systems as it unambiguously selects the angle measurement over the extended FOV whereas the conventional centroid calculation introduces ambiguity. The centroid calculation and angle selection may be used to improve the search and selection of the matched filter. Alternately, the matched filter may be used to disambiguate the angle selection based on the centroid calculation.05-03-2012
20090135411METHOD, APPARATUS, AND SYSTEM OF AIMING FIXTURES OR DEVICES - An apparatus, method, and system of aiming devices such as antennas, free-space optical communication transmitters and lighting fixtures. One aspect of the invention mounts a substantially collimated light source on a device or lighting fixture. The direction of the substantially collimated light source is fixed in a known relationship to the aiming direction of the fixture or device. By finding the substantially collimated light source either by direct viewing, in a mirror, or with a light sensor, the aiming direction of the fixture or device can be derived by using the known the relationship between the substantially collimated light source and the aiming direction of the fixture or device. Thus, the aiming direction of the fixture or device can be derived without operating the fixture or device and can be derived even at relatively remote locations from the fixture or device. The apparatus and method can be used on one fixture or a plurality of fixtures or devices. It can also be used on one fixture of an array of fixtures or devices to aim the entire array.05-28-2009
20120300197SCANNING MIRROR DEVICE - There is provided a scanning mirror device with a microsystem scanning mirror which is mounted rotatably about at least one axis, and a detection module which has a light source which emits a light beam, and a position detector, wherein the detection module directs the light beam onto the scanning mirror from behind, with the result that the light beam is reflected, at the back of the scanning mirror, to the position detector which measures the position of the reflected light beam, from which the rotation angle of the scanning mirror about the at least one axis can be deduced.11-29-2012
20100245806ANGLE MEASUREMENTS - Methods and devices for angle determination, and retroreflecting foils are presented. A retroreflecting foil (09-30-2010
20120170028Beam deflection sensor - An aluminum disc containing three lasers which will be projected along the ‘X’, ‘Y’, and ‘Z’ axes of a structural beam to which the device is attached. It will then relay this information to a computer which will calculate deflection in the beam. The computer will compare the deflection in the beam with the programmed maximum safe amount of deflection. Due to its construction and simplicity the device can be used quickly by a person not trained in the field. A simple suction cup on the front surface of the disc allows it to be easily attached to the beam simply by pressing it against a flat surface area of said beam. The invention is intended for use as an early warning device to prevent unexpected creep failure of structures, but has potential application as a measuring device in the Materials Testing industry.07-05-2012
20120176608SYSTEM AND METHOD FOR ANTENNA ALIGNMENT - According to various embodiments, a parabolic antenna may include a radome with an optically transparent window. The parabolic antenna may include a feedhorn socket configured to receive a feedhorn assembly. The feedhorn socket may also be configured to receive a spotting scope. According to various embodiments, the spotting scope may be mounted in place of the feedhorn assembly and used to optically align the parabolic antenna with respect to a distant target. The optically transparent window positioned in the radome may allow a user to see through the radome. Once aligned, the spotting scope may be removed from the feedhorn socket. A feedhorn assembly may then be secured in the feedhorn socket and a radio unit coupled thereto for radio frequency transmission.07-12-2012
20120075622ROTARY ENCODER AND OPTICAL APPARATUS - The rotary encoder includes a rotary scale in which a spiral pattern is formed, and a sensor unit including a light source and a first light-receiving part that detects light entering via the spiral pattern. A first reading area where the first light-receiving part reads the spiral pattern includes at least one cycle of the spiral pattern in a radial direction over an entire rotational angle range of the rotary scale. The first light-receiving part outputs sinusoidal signals corresponding to a radial cycle of the spiral pattern. The signal processor produces a first phase signal from two phase sinusoidal signals produced based on the sinusoidal signals output from the first light-receiving part, and produces, based on the first phase signal, a rotational angle signal showing a rotational angle of the rotary scale.03-29-2012
20110228261Method of Determining the Contact Angle of a Ball Bearing - To determine the contact angle of a ball bearing, one of two rings is rotated while the other ring is held stationary. The number of revolutions of the rotated ring and the number of revolutions accomplished in the same period by the balls, and therefore by the retaining cage, are detected. The revolutions of the balls are detected through an optical detecting device which projects a radiation through the bearing, in the gap between the outer and inner rings, whereby the radiation is intercepted directly by the balls and/or the cage. The contact angle is determined using the following parameters: the number of revolutions of the rotating ring, the number of revolutions of the balls or of the cage, the diameter of the balls, and the pitch diameter.09-22-2011
20110235025SOLAR CONCENTRATOR SYSTEMS - A solar concentrating system including a concentrator operative to track the Sun so as to concentrate incident sunlight on to a focal location, the concentrator including a support structure, and an array of concentrating reflectors mounted on the support structure, wherein at least one of the reflectors is formed with a reflective surface facing the Sun and configured as a concave surface such that the incident sunlight impinging on the reflective surface is reflected on to the focal location, the array of concentrating reflectors being mounted on the support structure in a Fresnel-like reflector arrangement thus defining the concentrator as a Fresnel reflector.09-29-2011
20130114071DEVICE AND METHOD FOR DETERMINING THE ORIENTATION OF TWO SHAFTS CONNECTED VIA TWO UNIVERSAL JOINTS AND A THIRD SHAFT WITH A PIVOT JOINT - A device for measuring and optionally correcting the angular offset of two shafts which are connected to one another by way of two universal joints and a third shaft calls for the measurement heads of an optoelectronic alignment device to be adjustably arranged on the shafts by means of at least one pivot joint on one of the clamping devices, with an adjustment capacity. A pertinent method contains matching of the orientation of the measurement heads of the optoelectronic alignment device on the shafts in at least two measurement positions by adjusting the pivot joint.05-09-2013
20130120745OBJECT DETECTION DEVICE PROVIDED WITH ANGLE ADJUSTMENT MECHANISM - A horizontal adjustment-engagement member (05-16-2013
20130128263Angle measurement by use of multiple oriented light sources - Embodiments of the present invention may provide a relative angular motion measurement system that includes a remote device used to control operations of a host device. The remote may include a plurality of light sources with predetermined light distribution patterns and angles of orientation with respect to a major axis of the remote. The host device may include a sensor and a controller. The sensor may detect light emitted from the remote (via the light sources) and generate output signals that may be interpreted by the controller. The controller may interpret the output signals from the sensor to estimate received intensity from each light source and calculate the orientation of the remote device based on data representing the light sources' light distribution patterns with fixed angles of orientation.05-23-2013
20100309459ANGLE SENSOR, SYSTEM AND METHOD EMPLOYING GUIDED-MODE RESONANCE - An angle sensor, system and method employ a guided-mode resonance. The angle sensor includes a guided-mode resonance (GMR) grating and a resonance processor. The resonance processor determines an angle of incidence of a signal incident on the GMR grating. The resonance processor uses a guided-mode resonance response of the GMR grating to the signal to determine the angle of incidence. The angle sensing system includes the GMR grating, the resonance processor and further includes an optical source that produces the signal. The method includes providing a GMR grating, detecting a guided-mode resonance produced in the GMR grating when subjected to an incident signal, and determining an angle of incidence of the incident signal from one or both of a number of and a spectral distance between guided-mode resonances present in a response of the GMR grating to the incident signal.12-09-2010
20130155397Rotation Angle Detecting Apparatus And Surveying Instrument - A rotation angle detecting apparatus comprises a bearing holder, a rotation shaft rotatably supported by said bearing holder, a shaft portion space formed in said rotation shaft, a bearing holder space formed in said bearing holder, a first condenser lens in said shaft portion space and having an optical axis that coincides with a center line of said rotation shaft, a second condenser lens in said bearing holder space and on an extension of a center line of said rotation shaft, an angle detection pattern at a focal position of one of said first and said second condenser lens, and an image sensor at a focal position of the other of said condenser lens, wherein said image sensor detects a projection image of said angle detection pattern projected onto said image sensor, and a displacement of said projection image involved by the rotation of said rotation shaft is detected.06-20-2013
20130155398PROJECTION ALIGNER - A projection aligner comprises a projection optical system for radiating a luminous flux including ultraviolet rays onto a photomask, and projecting said luminous flux which has passed through the photomask onto a substrate to which photoresist is applied; a substrate table for mounting the substrate, and a light blocking means for covering the peripheral portion of the substrate to block luminous flux. The light blocking means (06-20-2013
20120287421ATTITUDE CORRECTION APPARATUS INCLUDING OPPOSING LASER EMITTERS - An attitude correction apparatus includes a pair of opposing laser emitters that face each other. Each of the laser emitters includes a laser oscillator to generate a laser beam, a condenser lens to emit the laser beam toward the head suspension, and galvanomirrors to adjust the directivity of an optical axis of the laser beam from a standby state toward a spot on the head suspension. The condenser lens of each laser emitter is positioned so that the directivity of the optical axis of the laser beam in the standby state disagrees with an optical path that passes through the condenser lens and laser oscillator of the other laser emitter.11-15-2012
20120026486NON-CONTACTING ALIGNING METHOD FOR PLANES IN THREE-DIMENSIONAL ENVIRONMENT - A non-contacting aligning method for planes in a three-dimensional environment is disclosed. The method includes: projecting a light beam in a predetermined incident angle onto a transparent first object and an opaque second object that are facing each other; and calculating a distance between the first and second objects basing on the tangent trigonometric function of the incident angle of the light beam.02-02-2012
20120057150HEAD TRACKING SYSTEM - A head tracking system for determining a head position of a user may include a light source configured to emit light onto a rectangular position sensitive device supported by a support structure such as headphones. The light emitted by the light source may generate a light spot on the position sensitive device. A head position determining module may determine the head position using the position of the light spot on the position sensitive device. The support structure may be configured to support the position sensitive device such that a head rotation results in rotation of the position sensitive device and a displacement of the light spot toward a corner of the rectangular position sensitive device.03-08-2012

Patent applications in class ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT

Patent applications in all subclasses ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT