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81697 results about "Light beam" patented technology

A light beam or beam of light is a directional projection of light energy radiating from a light source. Sunlight forms a light beam (a sunbeam) when filtered through media such as clouds, foliage, or windows. To artificially produce a light beam, a lamp and a parabolic reflector is used in many lighting devices such as spotlights, car headlights, PAR Cans and LED housings. Light from certain types of laser has the smallest possible beam divergence.

Near to Eye Display System and Appliance

A near-to-eye display system for forming an image as an illuminated region on a retina of at least one eye of a user is disclosed. The system includes a source of modulated light, a proximal optic positionable adjacent an eye of the user to receive the modulated light. The proximal optic has a plurality of groups of optically redirecting regions. The optically redirecting regions are configured to direct a plurality of beams of the modulated light into a pupil of the eye to form a contiguous illuminated portion of the retina of the eye. A first group of the optically redirecting regions is configured to receive modulated light from the source and redirect beams of the modulated light into the pupil of the eye for illumination of a first portion of the retina. A second group of the optically redirecting regions is configured to receive modulated light from the source and redirect beams of the modulated light into the pupil of the eye for illumination of a second portion of the retina.
Owner:CHAUM DAVID +2

Metrology Method and Apparatus, Lithographic Apparatus, Device Manufacturing Method and Substrate

A metrology apparatus is arranged to illuminate a plurality of targets with an off-axis illumination mode. Images of the targets are obtained using only one first order diffracted beam. Where the target is a composite grating, overlay measurements can be obtained from the intensities of the images of the different gratings. Overlay measurements can be corrected for errors caused by variations in the position of the gratings in an image field.
Owner:ASML NETHERLANDS BV

Code symbol reading system employing dynamically-elongated laser scanning beams for improved levels of performance

A laser scanning bar code symbol reading system for scanning and reading poor quality and damaged bar code symbols in flexible operating conditions. The system includes a housing having a light transmission window; a dynamically-elongated laser beam production module, including a multi-cavity visible laser diode (VLD), for producing a dynamically-elongated laser beam having (i) a direction of propagation extending along a z reference direction, (ii) a height dimension being indicated by the y reference direction, and (iii) a width dimension being indicated by the x reference direction, where x, y and z directions are orthogonal to each other. Each dynamically-elongated laser beam is characterized by an elongation ratio (ER) that is defined as Y / X where, for any point within the working range of the laser scanning bar code symbol reading system, extending along the z direction, (i) Y indicates the beam height of the dynamically-elongated laser beam measured in the Y reference direction, (ii) X indicates the beam width of the dynamically-elongated laser beam measured in the X reference direction, and (iii) the beam height (Y) and the laser beam width (X) are measured at 1 / e2 intensity clip level. A laser scanning mechanism is provided for scanning the dynamically-elongated laser beam out the light transmission window and across a scanning field defined external to the housing, in which a bar code symbol is present for scanning by the dynamically-elongated laser scanning beam.
Owner:METROLOGIC INSTR

Catadioptric projection objective with geometric beam splitting

A catadioptric projection objective is used to project a pattern arranged in an object plane of the projection objective into an image plane of the projection objective with the formation of at least one real intermediate image and has an image-side numerical aperture NA>0.7. The projection objective comprises an optical axis and at least one catadioptric objective part that comprises a concave mirror and a first folding mirror. There are a first beam section running from the object plane to the concave mirror and a second beam section running from the concave mirror to the image plane. The first folding mirror is arranged with reference to the concave mirror in such a way that one of the beam sections is folded at the first folding mirror and the other beam section passes the first folding mirror without vignetting, the first beam section and the second beam section crossing one another in a cross-over region.
Owner:CARL ZEISS SMT GMBH

Navigation and control system for autonomous vehicles

A navigation and control system including a sensor configured to locate objects in a predetermined field of view from a vehicle. The sensor has an emitter configured to repeatedly scan a beam into a two-dimensional sector of a plane defined with respect to a first predetermined axis of the vehicle, and a detector configured to detect a reflection of the emitted beam from one of the objects. The sensor includes a panning mechanism configured to pan the plane in which the beam is scanned about a second predetermined axis to produce a three dimensional field of view. The navigation and control system includes a processor configured to determine the existence and location of the objects in the three dimensional field of view based on a position of the vehicle and a time between an emittance of the beam and a reception of the reflection of the emitted beam from one of the objects.
Owner:SAMSUNG ELECTRONICS CO LTD

Three-dimensional imaging and display system

A three-dimensional imaging and display system is provided in which user input is optically detected in an imaging volume by measuring the path length of an amplitude modulated scanning beam as a function of the phase shift thereof. Visual image user feedback concerning the detected user input is presented.
Owner:APPLE INC

Catadioptric projection objective with geometric beam splitting

A catadioptric projection objective for imaging a pattern arranged on the object plane of the projection objective, on the image plane of the projection objective, comprising: a first objective part for imaging an object field in a first real intermediate image; a second objective part for producing a second real intermediate image with the radiation coming from the first objective part; and a third objective part for imaging the second real intermediate image on the image plane; wherein at least one of the objective parts is a catadioptric objective part with a concave mirror, and at least one of the objective parts is a refractive objective part and a folding mirror is arranged within this refractive objective part in such a way that a field lens is arranged between the folding mirror and an intermediate image which is closest to the folding mirror.
Owner:CARL ZEISS SMT GMBH

Dimensioning system with multipath interference mitigation

ActiveUS20160109224A1Reducing multipath distortionReduce distortionUsing optical meansMultipath interferenceLight beam
A system and method for measuring an item's dimensions using a time-of-flight dimensioning system is disclosed. The system and method mitigate multipath distortion and improve the accuracy of the measurements, especially in a mobile environment. To mitigate the multipath distortion, an imager captures an image of an item of interest. This image is processed to determine an illumination region corresponding item-of-interest's size, shape, and position. Using this information, an adjustable aperture's size, shape, and position are controlled so the light beam used in the time-of-flight analysis substantially illuminates the illumination region without first being reflected.
Owner:HAND HELD PRODS

Systems and methods for imaging large field-of-view objects

InactiveUS7108421B2Quantity minimizationAvoiding corrupted and resulting artifacts in image reconstructionMaterial analysis using wave/particle radiationRadiation/particle handlingBeam sourceX-ray
An imaging apparatus and related method comprising a source that projects a beam of radiation in a first trajectory; a detector located a distance from the source and positioned to receive the beam of radiation in the first trajectory; an imaging area between the source and the detector, the radiation beam from the source passing through a portion of the imaging area before it is received at the detector; a detector positioner that translates the detector to a second position in a first direction that is substantially normal to the first trajectory; and a beam positioner that alters the trajectory of the radiation beam to direct the beam onto the detector located at the second position. The radiation source can be an x-ray cone-beam source, and the detector can be a two-dimensional flat-panel detector array. The invention can be used to image objects larger than the field-of-view of the detector by translating the detector array to multiple positions, and obtaining images at each position, resulting in an effectively large field-of-view using only a single detector array having a relatively small size. A beam positioner permits the trajectory of the beam to follow the path of the translating detector, which permits safer and more efficient dose utilization, as generally only the region of the target object that is within the field-of-view of the detector at any given time will be exposed to potentially harmful radiation.
Owner:MEDTRONIC NAVIGATION

Interactive directed light/sound system

An interactive directed beam system is provided. In one implementation, the system includes a projector, a computer and a camera. The camera is configured to view and capture information in an interactive area. The captured information may take various forms, such as, an image and / or audio data. The captured information is based on actions taken by an object, such as, a person within the interactive area. Such actions include, for example, natural movements of the person and interactions between the person and an image projected by the projector. The captured information from the camera is then sent to the computer for processing. The computer performs one or more processes to extract certain information, such as, the relative location of the person within the interactive area for use in controlling the projector. Based on the results generated by the processes, the computer directs the projector to adjust the projected image accordingly. The projected image can move anywhere within the confines of the interactive area.
Owner:MICROSOFT TECH LICENSING LLC

Device and method for in vitro determination of analyte concentrations within body fluids

A reagentless whole-blood analyte detection system that is capable of being deployed near a patient has a source capable of emitting a beam of radiation that includes a spectral band. The whole-blood system also has a detector in an optical path of the beam. The whole-blood system also has a housing that is configured to house the source and the detector. The whole-blood system also has a sample element that is situated in the optical path of the beam. The sample element has a sample cell and a sample cell wall that does not eliminate transmittance of the beam of radiation in the spectral band.
Owner:OPTISCAN BIOMEDICAL

Robot obstacle detection system

A robot obstacle detection system including a robot housing which navigates with respect to a surface and a sensor subsystem having a defined relationship with respect to the housing and aimed at the surface for detecting the surface. The sensor subsystem includes an optical emitter which emits a directed beam having a defined field of emission and a photon detector having a defined field of view which intersects the field of emission of the emitter at a region. A circuit in communication with a detector redirects the robot when the surface does not occupy the region to avoid obstacles. A similar system is employed to detect walls.
Owner:IROBOT CORP

Aperture matched polyrod antenna

InactiveUS20080252541A1Minimizes and reduces end reflection and phase variationMinimizing and reducing diameterAdditive manufacturing apparatusWaveguide type devicesGaussian beamLight beam
A dielectric polyrod having at least one tapered section, where a section exposed outside of the waveguide is tapered a long a curve that depends on the dielectric constant of the material used. The invention also relates to an aperture matched polyrod antenna which includes the same and an inductive tuning element used to achieve wideband impedance match and to create a Gaussian beam in the radiating near field of the antenna, suitable to mimic a small region plane wave.
Owner:ARIZONA STATE UNIVERSITY

Method for controlling configuration of laser induced breakdown and ablation

In one aspect the invention provides a method for laser induced breakdown of a material with a pulsed laser beam where the material is characterized by a relationship of fluence breakdown threshold (Fth) versus laser beam pulse width (T) that exhibits an abrupt, rapid, and distinct change or at least a clearly detectable and distinct change in slope at a predetermined laser pulse width value. The method comprises generating a beam of laser pulses in which each pulse has a pulse width equal to or less than the predetermined laser pulse width value. The beam is focused to a point at or beneath the surface of a material where laser induced breakdown is desired.The beam may be used in combination with a mask in the beam path. The beam or mask may be moved in the x, y, and Z directions to produce desired features. The technique can produce features smaller than the spot size and Rayleigh range due to enhanced damage threshold accuracy in the short pulse regime.
Owner:AMO DEVMENT

Laser-produced porous surface

A method of forming an implant having a porous tissue ingrowth structure and a bearing support structure. The method includes depositing a first layer of a metal powder onto a substrate, scanning a laser beam over the powder so as to sinter the metal powder at predetermined locations, depositing at least one layer of the metal powder onto the first layer and repeating the scanning of the laser beam.
Owner:UNIV OF LIVERPOOL +1

Encapsulant with scatterer to tailor spatial emission pattern and color uniformity in light emitting diodes

A light emitting device having an encapsulant with scattering features to tailor the spatial emission pattern and color temperature uniformity of the output profile. The encapsulant is formed with materials having light scattering properties. The concentration of these light scatterers is varied spatially within the encapsulant and / or on the surface of the encapsulant. The regions having a high density of scatterers are arranged in the encapsulant to interact with light entering the encapsulant over a desired range of source emission angles. By increasing the probability that light from a particular range of emission angles will experience at least one scattering event, both the intensity and color temperature profiles of the output light beam can be tuned.
Owner:CREELED INC

Scanning endoscope

A scanning endoscope, amenable to both rigid and flexible forms, scans a beam of light across a field-of-view, collects light scattered from the scanned beam, detects the scattered light, and produces an image. The endoscope may comprise one or more bodies housing a controller, light sources, and detectors; and a separable tip housing the scanning mechanism. The light sources may include laser emitters that combine their outputs into a polychromatic beam. Light may be emitted in ultraviolet or infrared wavelengths to produce a hyperspectral image. The detectors may be housed distally or at a proximal location with gathered light being transmitted thereto via optical fibers. A plurality of scanning elements may be combined to produce a stereoscopic image or other imaging modalities. The endoscope may include a lubricant delivery system to ease passage through body cavities and reduce trauma to the patient. The imaging components are especially compact, being comprised in some embodiments of a MEMS scanner and optical fibers, lending themselves to interstitial placement between other tip features such as working channels, irrigation ports, etc.
Owner:MICROVISION

Method of and apparatus for real-time continual nanometer scale position measurement by beam probing as by laser beams and the like of atomic and other undulating surfaces such as gratings or the like relatively moving with respect to the probing beams

InactiveUS6639686B1Improved position sensing responseImprove operationNanoopticsInstrumental componentsGratingLight beam
An improved method of and apparatus for real-time continual nanometer scale position measurement by beam probing as by laser beams and the like, both fixed and oscillating or scanning, over an atomic and other undulating surface such as gratings or the like, relatively moving with respect to the probing beams; and providing, where desired, increased detection speeds, improved positioning sensing response, freedom from or relaxed requirements of strict control on probing oscillation amplitude, and multi-dimensional position measurement with focused beam probes and the like.
Owner:NANOWAVE

Overlay Measurement Apparatus, Lithographic Apparatus and Device Manufacturing Method Using Such Overlay Measurement Apparatus

An overlay measurement apparatus has a polarized light source for illuminating a sample with a polarized light beam and an optical system to capture light that is scattered by the sample. The optical system includes a polarizer for transmitting an orthogonal polarization component that is orthogonal to a polarization direction of the polarized light beam. A detector measures intensity of the orthogonal polarization component. A processing unitise connected to the detector, and is arranged to process the orthogonal polarization component for overlay metrology measurement using asymmetry data derived from the orthogonal polarization component.
Owner:ASML NETHERLANDS BV

Device and method for in vitro determination of analyte concentrations within body fluids

A reagentless whole-blood analyte detection system that is capable of being deployed near a patient has a source capable of emitting a beam of radiation that includes a spectral band. The whole-blood system also has a detector in an optical path of the beam. The whole-blood system also has a housing that is configured to house the source and the detector. The whole-blood system also has a sample element that is situated in the optical path of the beam. The sample element has a sample cell and a sample cell wall that does not eliminate transmittance of the beam of radiation in the spectral band.
Owner:OPTISCAN BIOMEDICAL
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