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13909 results about "Light filter" patented technology
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RGBZ (red, green, blue, z-depth) filter system usable with sensor systems, including sensor systems with synthetic mirror enhanced three-dimensional imaging
InactiveUS7375803B1Provide informationTelevision system detailsOptical rangefindersPhysicsOptical path
For use with an imaging system, in one aspect, the present invention implements a filter system that provides a precise narrow band pass for IR-NIR wavelengths, while also providing individual dye-type filters that can be disposed above individual RGB pixels to create dedicated red, green, and blue pixel responses. An interference dichotic filter provides a non-critical first pass band that adequately encompassed RGB wavelengths, and provides a more critical IR-NIR pass band for Z-pixels. The individual dye-type filters have individual R, G, B pass band shapes that fall within the interference filter. Preferably a dye-type NIR-IR filter is also in a common optical path with the other filters to contribute to the overall filtering. In a second aspect, the invention provides an RGB-Z system with dynamically updated image renderings to better enable a viewer of the image to acquire a sense of depth.
Owner:MICROSOFT TECH LICENSING LLC
Apparatus, system and method for optically analyzing a substrate
InactiveUS20060184040A1Quality improvementDiagnostics using lightScattering properties measurementsLength waveLight filter
An apparatus for optically analyzing a substrate. The apparatus includes: (a) a light source for directing light onto the substrate; (b) optics for creating an optical path from light reflected from the substrate; and (c) a multiple wavelength imaging optical subsystem positioned in the optical path. The multiple wavelength imaging optical subsystem includes: (i) one or more filters which are capable of one or both of: (1) being alternatively or sequentially interposed in the optical path to extract one or more of wavelengths or wavelength bands of interest; or (2) having their wavelength selectivity adjusted to extract one or more wavelengths or wavelength bands of interest; and (ii) one or more imaging devices positioned to image the extracted wavelengths or wavelength bands of interest from the one or more filters; (d) an imaging device positioned in the optical path. Also a method is included, making use of the apparatus for analysis of a substrate.
Owner:INNEROPTIC TECH
Nanocrystal doped matrixes
ActiveUS20060068154A1Different propertyHigh refractive indexMaterial nanotechnologyMirrorsNanometreRefractive index matching
The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.
Owner:SAMSUNG ELECTRONICS CO LTD
Image processing system to control vehicle headlamps or other vehicle equipment
InactiveUS6631316B2Reduce complexityLow costTelevision system detailsDigital data processing detailsImaging processingComputer graphics (images)
An imaging system of the invention includes an image array sensor including a plurality of pixels. Each of the pixels generate a signal indicative of the amount of light received on the pixel. The imaging system further includes an analog to digital converter for quantizing the signals from the pixels into a digital value. The system further includes a memory including a plurality of allocated storage locations for storing the digital values from the analog to digital converter. The number of allocated storage locations in the memory is less than the number of pixels in the image array sensor. According to another embodiment, an imaging device includes an image sensor having a plurality pixels arranged in an array; and a multi-layer interference filter disposed over said pixel array, said multi-layer interference filter being patterned so as to provide filters of different colors to neighboring pixels or groups of pixels.
Owner:GENTEX CORP
Doorbell communication systems and methods
ActiveUS9060104B2Accurate analysisTelevision system detailsColor television detailsDoorbellCommunications system
Owner:SKYBELL TECH IP LLC
Seal for electrochromic devices
An improved seal member is provided as a part of an electrochromic device to bond two glass elements together in a spaced-apart relationship. In one embodiment the seal member provides improved adhesion to a reflector / electrode on the third surface of an electrochromic mirror, or to a layer of metal on the second or third surface for an electrochromic light filter. This seal member comprises a mixture of an organic resin sealing system and an adhesion promoter, where the adhesion promotor comprises a first and a second region, where the first region interacts with the reflector / electrode or the metal layer, and a second region that interacts with the organic resin sealing system, and may even chemically react with the organic resin sealing system. In another embodiment the seal member is provided with a coefficient of thermal expansion that is closer to glass than a standard epoxy sealing system.
Owner:GENTEX CORP
Nanocrystal doped matrixes
ActiveUS7645397B2Good miscibilityInhibit aggregationMaterial nanotechnologyIndividual molecule manipulationAnti-reflective coatingQuantum efficiency
Owner:SAMSUNG ELECTRONICS CO LTD
Method and apparatus for a downhole spectrometer based on electronically tunable optical filters
ActiveUS20050099618A1High resolution spectroscopyEasy to analyze and useRadiation pyrometrySurveyGas oil ratioAPI gravity
The present invention provides an apparatus and method for high resolution spectroscopy (approximately 10 picometer wavelength resolution) using a tunable optical filter (TOF) for analyzing a formation fluid sample downhole and at the surface to determine formation fluid parameters. The analysis comprises determination of gas oil ratio, API gravity and various other fluid parameters which can be estimated after developing correlations to a training set of samples using a neural network or a chemometric equation.
Owner:BAKER HUGHES INC
Integrated narrowband optical filter based on embedded subwavelength resonant grating structures
InactiveUS6035089ACost effectiveMinimal reflectionOptical filtersOptical resonator shape and constructionGratingWavelength
A resonant grating structure in a waveguide and methods of tuning the performance of the grating structure are described. An apparatus includes a waveguide; and a subwavelength resonant grating structure embedded in the waveguide. The systems and methods provide advantages including narrowband filtering capabilities, minimal sideband reflections, spatial control, high packing density, and tunability.
Owner:LOCKHEED MARTIN ENERGY SYST INC
Systems for and methods of three dimensional viewing
InactiveUS7190518B1Low costGreat easeColor television detailsSteroscopic systemsParallaxDisplay device
The present invention relates in general to systems for and methods of three-dimensional viewing of displays and projections. One embodiment two layers (50, 90) are uniform polarizing filters and a birefringent layer with individually switchable elements (60) is sandwiched between them. Together these layers (50, 60, 90) constitute a parallax layer (40). This parallax layer (40) is located at a certain distance from a display (10). This placement, and the existence of opaque areas on the parallax layer (40) which permits to a viewer see a three-dimensional image. The individual elements (601–615) of the birefringent layer (60) are controlled by a control element (80), which is in communication with a head-tracking sensor (85). This allows the individual elements (601–615) of the birefringent layer (60) to be selectively turned on and off according to the position of the viewer's head.
Owner:DISPLAY VECTORS LLC +1
Gaming machine with layered displays
InactiveUS20070004513A1Facilitate player inputFacilitate gaming machine interactionApparatus for meter-controlled dispensingVideo gamesDisplay deviceCommon line
The present invention provides a gaming machine that includes multiple display devices arranged in a common line of sight. An intermediate display device or light filter may be included between the exterior display device and the interior display device. A touchscreen may also be added outside the exterior display device to facilitate player input and gaming machine interaction. The common line of sight arrangement permits a person to view video output on all the display devices simultaneously or without substantially changing their position or line of sight. The interior display device may include a digital display device that includes a curved surface.
Owner:IGT
Four-channel color filter array pattern
ActiveUS20100302423A1Good colorReduce colorTelevision system detailsTelevision system scanning detailsColor imageDiagonal
An image sensor for capturing a color image comprising a two dimensional array of light-sensitive pixels including panchromatic pixels and color pixels having at least two different color responses, the pixels being arranged in a repeating pattern having a square minimal repeating unit having at least three rows and three columns, the color pixels being arranged along one of the diagonals of the minimal repeating unit, and all other pixels being panchromatic pixels.
Owner:OMNIVISION TECH INC
Optical imaging device
ActiveUS20070046778A1Reduce decreaseReduce lightSurgeryDiagnostics using spectroscopyOptical fluorescenceLight guide
An optical imaging device of the present invention comprises: a light source device; a light guide and illumination lens, provided in an insertion section that can be inserted into a body cavity, for constituting an illumination light path for guiding an illumination light from the light source device to a subject; an objective lens for receiving return lights from the subject; an image capturing section for acquiring a visible light band image from the return light; an excitation light cut filter and image capturing section for acquiring a fluorescent image from the return lights; and an illumination light filter, provided on the illumination light path, for decreasing light in a band overlapping with the band of light of which image is captured by the image capturing section from the illumination light incident on.
Owner:OLYMPUS CORP
Spectral imaging system for remote and noninvasive detection of target substances using spectral filter arrays and image capture arrays
ActiveUS20160069743A1Reliable identificationEnhance the imageMedical imagingRadiation pyrometryProgram instructionSpectral imaging
An approach to noninvasively and remotely detect the presence, location, and / or quantity of a target substance in a scene via a spectral imaging system comprising a spectral filter array and image capture array. For a chosen target substance, a spectral filter array is provided that is sensitive to selected wavelengths characterizing the electromagnetic spectrum of the target substance. Elements of the image capture array are optically aligned with elements of the spectral filter array to simultaneously capture spectrally filtered images. These filtered images identify the spectrum of the target substance. Program instructions analyze the acquired images to compute information about the target substance throughout the scene. A color-coded output image may be displayed on a smartphone or computing device to indicate spatial and quantitative information about the detected target substance. The system desirably includes a library of interchangeable spectral filter arrays, each sensitive to one or more target substances.
Owner:INNOPIX
Electrically controlled optical shield for eye protection against bright light
InactiveUS7970172B1Reduce decreaseLower Level RequirementsAntiglare equipmentPedestrian/occupant safety arrangementPupilElectron
An active device provides protection from the sun or other bright light source for improved vision, using a variable opacity medium that is electronically controlled to cast a shadow on an eye of a user and / or to otherwise reduce the amount of the light incident on the eye, thereby reducing glare. Miniature cameras monitor the user's eye movements and the scene in front of the user. If a bright light is detected, one or more dark spots is created in the variable opacity medium that acts as a shade or light filter for a pupil of the eye. The variable opacity medium, cameras, and associated electronics can be used in connection with eyeglasses (including sunglasses), as part of a device worn by the user (such as a helmet), a windshield, mirror, or other optical element having a view port through which light can be seen by the user.
Owner:HENDRICKSON JAMES ANTHONY
Endoscope assembly with a polarizing filter
An endoscope includes an imaging device, a first polarizing filter disposed in front of the imaging device, a light source, and a second polarizing filter disposed in front of the light source. The planes of polarization of the first and second polarizing filters are at a substantially 90° angle.
Owner:PSIP LLC
Symmetric filter patterns for enhanced performance of single and concurrent driver assistance applications
InactiveUS20080043099A1Avoid saturationReduce intensityVehicle headlampsRoad vehicles traffic controlDriver/operatorReal time analysis
A system mounted on a vehicle for performing vehicle control applications and driver warning applications, the system including a camera configured to acquire a plurality of images of the environment in front of the camera. The camera includes a filter wherein the filter is installed at the focal plane of the camera and wherein designated portions of the filter transmit selective light wavelength. The preferred filter has a checkerboard pattern. The system further including an image processor capable of analyzing in real time a plurality of respective image sequences acquired from at least one of the portions of the filter and is capable of detecting yellow lane markings on a concrete road surface.
Owner:MOBILEYE TECH
Unitary molded lens filter for touch screen interface
InactiveUS6900795B1Easy to cleanEasy to manufactureTelevision system detailsMaterial analysis by optical meansCamera lensGlass fiber
A durable unitary lens filter is provided for use with a touch sensitive display device for associated control process equipment. A front cover secures the unitary lens filter to the machine. The lens assembly includes a mounting bezel that supports an intermediate lens securing an integral rear lens filter through which a responsive display shows process information to an operator. The front cover captivates the integral bezel to secure the lens to the associated process device. The lens is molded from a semi-rigid material composition including glass fibers. An internal retainer compressibly captivates the bezel against the front cover. The bezel periphery extends substantially beyond the outermost peripheral edge of the rear lens so that forces thereto are transferred and dissipated to the machine housing.
Owner:WORD MACHINERY
Stacked OLED display having improved efficiency
ActiveUS6987355B2Incadescent screens/filtersDischarge tube luminescnet screensOptoelectronicsWhite light
An OLED device, having a pixel includes a plurality of individually addressable first white light emitting elements; a corresponding plurality of color filters located over the first white light emitting elements to filter the light emitted by the first white light emitting elements; and a second separately addressable white light emitting element located over the color filters for passing the filtered white light and emitting white light.
Owner:GLOBAL OLED TECH
Skin Imaging system with probe
ActiveUS20060092315A1Television system detailsDiagnostics using spectroscopyAngle of incidenceSkin test
A skin testing and imaging station and corresponding method for capturing, displaying and analyzing images of a person and for testing the skin using a variety of probes includes a digital camera, a light source capable of providing at least two different wavelengths of light, a plurality of probes for conducting skin tests, a touch-screen display and a computer for controlling the components of the station. The apparatus selectively captures and displays a plurality of digital images using different wavelengths of illuminating light, e.g., using a plurality of flashes and filters, some of which may be adjustable to adjust the angle of incidence of the illuminating light on the subject. In video mode, the camera displays a real time image on the display facilitating a user to position a probe for testing any specific area of the skin. Preferably, the apparatus is self-serve, allowing any person to capture, review and analyze the images and skin data. Verbal and / or graphic instructions to a user aid in use of the station. An intuitive graphic user interface with thumbnail images is employed. Focus control, zoom and synchronized side-by side comparison of images are available.
Owner:JOHNSON & JOHNSON CONSUMER COPANIES
Electro-optic device incorporating a discrete photovoltaic device and method and apparatus for making same
InactiveUS6433913B1Less powerStatic indicating devicesLaminationElectrical resistance and conductanceDisplay device
Improved electro-optic devices are provided which may be in the configuration of variable transmittance windows, variable transmittance eyeglasses, variable transmittance light filters and displays and other devices wherein the transmittance of light therethrough automatically varies as a function of light impinging thereon. The electro-optic devices include a self-erasing electro-optic medium, and the transmittance of light through such medium varies as a function of electrical signals applied thereto through the agency of at least one photovoltaic cell, enclosed within the electro-optic device, and obviating the necessity of providing external drive voltage or external bleeder resistors or external wiring. In addition, a method and apparatus are provided for making such electro-optic devices.
Owner:GENTEX CORP
Coaligned bar codes and validation means
InactiveUS20060022059A1Adding serialization capabilityCost effectiveCharacter and pattern recognitionRecord carriers used with machinesBarcodeLength wave
A security mark having multiple optically orthogonal coaligned bar codes is produced using a reflection hologram visible substantially at only a first wavelength that is layered over a wavelength sensitive filter, which blocks light transmission at the first wavelength but transmits light at a second wavelength, and having beneath it an additional bar code visible through the hologram and the wavelength sensitive filter at the second wavelength. A validation means reads multiple holographic bar codes with light at the first wavelength by illuminating the hologram separately from multiple directions, and further reads the bar code beneath the wavelength sensitive filter by illuminating the mark with light of the second wavelength. By suitable choice of multi-directional and multi-wavelength illumination, multiple coaligned bar codes may be read in the same physical location with no mutual interference.
Owner:INDONESIA STOCK EXCHANGE
Lighting devices, methods of lighting, light filters and methods of filtering light
ActiveUS20080259589A1Attractive white lightHigh color temperatureMechanical apparatusLight source combinationsEffect lightLight filter
A lighting device comprising a white light source, a filter which filters blue light from the white light, and a second light source which emits red light and / or reddish-orange light. In some embodiments, the white light source comprises a solid state light emitter. A method of lighting, comprising illuminating a white light source, illuminating a red and / or reddish-orange light source, the light sources being positioned and oriented such that the light mixes, and filtering blue light from the mixed light. A method of lighting, comprising illuminating a white light source, filtering blue light from the white light, and illuminating a red and / or reddish-orange light source. A light filter, comprising a first filter component which has a wall region and a window region, and a second filter component comprising two or more reflection regions. Also, methods of filtering.
Owner:IDEAL IND LIGHTING LLC
Optical manifold for light-emitting diodes
ActiveUS20060239006A1Easy to useImprove color uniformityMechanical apparatusLight source combinationsPhotoluminescencePhosphor
An optical manifold for efficiently combining a plurality of blue LED outputs to illuminate a phosphor for a single, substantially homogeneous output, in a small, cost-effective package. Embodiments are disclosed that use a single or multiple LEDs and a remote phosphor, and an intermediate wavelength-selective filter arranged so that backscattered photoluminescence is recycled to boost the luminance and flux of the output aperture. A further aperture mask is used to boost phosphor luminance with only modest loss of luminosity. Alternative non-recycling embodiments provide blue and yellow light in collimated beams, either separately or combined into white.
Owner:SEOUL SEMICONDUCTOR
Objective optical system for optical recording media and optical pickup device using it
InactiveUS20060077795A1Good optical performanceEfficiently focusRecord information storageOptical beam guiding meansOptical pickupDiffraction optics
An objective optical system for focusing light from a light source onto optical recording media includes an aperture control filter with a diffractive optical function formed as a glass plate with an aperture control structure on one side and a diffractive optical structure, such as a plastic diffractive optical element adhered to the glass plate on the other side, and an objective lens. The objective optical system focuses three light beams of three different wavelengths at three different numerical apertures onto desired positions of three different recording media with substrates of different thicknesses, such as a BD (or an AOD), a DVD, and a CD, that introduce different amounts of spherical aberration in the focused beams. The objective optical system provides compensating spherical aberration to the three light beams while keeping constant the distance between the aperture control filter with a diffractive optical function and the objective lens.
Owner:FUJI PHOTO OPTICAL CO LTD
Optical module with adhesively mounted filter
Owner:GOLD CHARM LTD
Image waveguide having a bend
An optical apparatus having a waveguide that includes a bend, a first segment and a second segment operatively coupled at the bend, the first and second segments each including a pair of reflective surfaces being substantially parallel and opposing each other. An in-coupling region receives light into the first segment of the waveguide, and an out-coupling region allows the light to exit the second segment of the waveguide. A light filtering region disposed near the bend between the first segment of the waveguide and the second segment of the waveguide will selectively filter light transmitted from the first segment of the waveguide to the second segment of the waveguide.
Owner:GOOGLE LLC
Energy conversion film and quantum dot film comprising quantum dot compound, energy conversion layer including the quantum dot film, and solar cell including the energy conversion layer
ActiveUS20060169971A1Improve energy efficiencyHigh solar efficiencyElectrolytic capacitorsFinal product manufactureHigh energySolar cell
An energy conversion film and a quantum dot film which contain a quantum dot compound, an energy conversion layer including the quantum dot film, and a solar cell including the energy conversion layer. The films act as cut-off filters blocking light of a particular energy level using the light absorption and emission effects of quantum dots and can convert high energy light to low energy light. The efficiency of a solar cell may be improved by providing the cell with a film that converts light above the spectrum-responsive region to light in the cell's spectrum-responsive region. The absorption wavelength region of the films can be broadened by providing the quantum dot compound in a variety of average particle sizes, for example, by providing a mixture of a first quantum dot compound having a first average particle size and a first quantum dot compound having a second average particle size.
Owner:SAMSUNG ELECTRONICS CO LTD
Filter design algorithm for multi-variate optical computing
Within a method of making an optical interference filter, sample spectra and measurements of a predetermined characteristic associated with respective spectra are provided. Upon selection of an initial number of filter layers and a thickness for each layer, a transmission spectrum is determined. Each sample spectrum is applied to a regression formula that relates interaction of light with the transmission spectrum to a regression value. A comparison relationship between the calculated regression values and the sample measurements is defined and optimized, wherein thickness of each layer is an optimization variable.
Owner:HALLIBURTON ENERGY SERVICES INC
LED device having improved contrast
ActiveUS20090051283A1Discharge tube luminescnet screensLamp detailsLight-emitting diodeOptical microcavity
A light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors. Additionally, a reflected-light absorbing layer is located over all of the light-emitting elements.
Owner:GLOBAL OLED TECH
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