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2396 results about "Color mixing" patented technology
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There are two types of color mixing: additive and subtractive. In both cases, mixing is typically described in terms of three colors and three secondary colors (colors made by mixing two of the three primary colors in equal amounts).
Light emitting diode package with diffuser and method of manufacturing the same
ActiveUS7501656B2Reduce thicknessIncrease freedomSolid-state devicesSemiconductor devicesEngineeringSealant
The invention relates to an LED package for facilitating color mixing using a diffuser and a manufacturing method of the same. The LED package includes a substrate with an electrode formed thereon, and an LED chip mounted on the substrate. The LED package also includes an encapsulant applied around the light emitting diode chip, containing a diffuser. The LED package further includes a lens part disposed on the light emitting diode chip and the encapsulant to radiate light in a wide angle. The LED package allows light from the light emitting diode chip to be emitted out of the package without distortion. The invention allows light to exit through the encapsulant containing the diffuser and the lens part, achieving uniform diffusion and emission of light from the LED chip, thereby increasing a radiating angle and obtaining a uniform light source.
Owner:SAMSUNG ELECTRONICS CO LTD
Backlight unit and liquid crystal display device using the same
InactiveUS20060002146A1Efficient mixingLittle color changeOptical light guidesNon-linear opticsLiquid-crystal displayLight guide
Light emitted in side surface directions from side-emitting red, green, and blue LEDs which are arranged on an LED array substrate is introduced into a light guide from side surfaces of a groove-shaped recessed portion, and propagates in the light guide. Thus, the three colors are mixed. The light further propagates in the light guide while being reflected at both side end surfaces of the light guide by the function of a reflective sheet and the like. Thus, color mixing progresses. Further, the light is reflected upward by diffuse reflective means provided on the lower surface of the light guide, and emitted as backlight light to the outside through a diffuse sheet.
Owner:NEC LCD TECH CORP
Signal processing apparatus for solid-state imaging device, signal processing method, and imaging system
InactiveUS20070146511A1Television system detailsTelevision system scanning detailsTransducerComputer science
A signal processing apparatus corrects color mixture between pixel cells in a solid-state imaging device in which the pixel cells including photoelectric transducers are two-dimensionally arranged in an array and in which color filters having primary color components for generating luminance components and other color components are arranged over the pixel cells. The signal processing apparatus includes correction processing means for performing the correction to the signal from a target pixel by using the signals from multiple neighboring pixels adjacent to the target pixel in the solid-state imaging device and correction parameters independently set for the signals.
Owner:SONY CORP
Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems
ActiveUS7088059B2Easy to controlReduce the differenceElectrical apparatusElectroluminescent light sourcesControl signalLighting system
A control circuit for a lighting system allows analog control over a first range of illumination intensities in which the intensity of the illumination source varies in proportion to the voltage level of the control signal. The circuit provides for improved dimming and color mixing capability by allowing pulse width or frequency modulation control in addition to analog control over a second range of illumination intensities.
Owner:BOCA FLASHER
Optical devices for controlled color mixing
The present invention provides a multicolor LED assembly packaged with improved and controlled color mixing to create a more uniform color mixture. The assembly includes at least one lens overlying an encapsulant which encapsulates a plurality of LED dies. The lens includes a top surface and a bottom surface with the contour of the bottom surface designed to redirect light from each of the LED dies in different directions towards the top surface of the lens. The contoured shaped of the bottom surface of the lens redirects light from each of the plurality of LED dies such that illuminance and luminous intensity distributions of the plurality of LED dies substantially overlap, wherein the deviation from complete overlap is less than a predetermined amount which is substantially imperceptible to the average human eye.
Owner:LIGHTING SCI GROUP
Rippled mixers for uniformity and color mixing
Various embodiments described herein comprise mixers comprising a light pipe having input and output ends and a central region therebetween. An optical path extends in a longitudinal direction from the input end through the central region to the output end. The central region of the light pipe comprises one or more rippled reflective sidewalls having a plurality of elongate ridges and valleys and sloping surfaces therebetween. Light from the input end propagating along the optical path reflects from the sloping surfaces and is redirected at a different azimuthal direction toward the output end thereby mixing the light at the output end. Illuminance and / or color mixing can therefore be provided.
Owner:SYNOPSYS INC
Dimmable LED light fixture having adjustable color temperature
ActiveUS20130063035A1Easy to controlSimulation is accurateElectrical apparatusElectroluminescent light sourcesDc currentEngineering
Electronic circuitry for color-mixing in an LED light fixture during AC power dimming is disclosed to achieve adjustable color temperature. According to one embodiment, a dimmable LED light fixture has first, second, and third LED light sources, the first and second LED light sources producing white light, the third LED light source producing colored light, the LED driver configured to power the LED light sources by providing a single-channel variable-DC current source having two output terminals, and a current regulator for maintaining the current in the third LED light source path substantially constant as the LED driver output current is decreased when the AC power is reduced by the dimmer module, thereby altering the color of the light produced by the combination of the LED light sources.
Owner:ABL IP HLDG
Array layout for color mixing
Lamps, luminaries or solid state lighting components are disclosed having multiple discrete light sources whose light combines to provide the desired emission characteristics. The discrete light sources are arranged in an array pursuant to certain guidelines to promote mixing of light from light sources emitting different colors of light. One embodiment solid state lighting component comprises a light emitting diode (LED) component having an array of LED chips having a first group of LED chips and one or more additional groups of LED chips. The array is arranged so that no two LED chips from said first group are directly next to one another in the array, that less than fifty percent (50%) of the LED chips in the first group of LEDs is on the perimeter of the array, and at least three LED chips from the one or more additional groups is adjacent each of the LED chips in the first group.
Owner:CREELED INC
White light emitting apparatus and line illuminator using the same in image reading apparatus
InactiveUS20100320928A1Low costReduce the number of productsMechanical apparatusElectroluminescent light sourcesOptical axisColor mixing
A white light emitting apparatus includes a light source section in which a first white LED that emits white light whose chromaticity deviates to a blue side from a predetermined white region of a CIE chromaticity diagram and a second white LED that emits white light whose chromaticity deviates to a yellow side from the predetermined white region are adjacently disposed so as to emit light with optical axes in substantially the same direction, and a current regulator that independently drives the blue LED chip in the first and second white LEDs, respectively. A color mixture of lights emitted from the first and second white LEDs is adjusted to a chromaticity of the predetermined white region using the current regulator.
Owner:CANON COMPONENTS INC
Method for obtaining a better color rendering with a photoluminescence plate
InactiveUS20080093615A1Good colorMore uniformNon-electric lightingLight source combinationsSolar lightPhotoluminescence
The present invention is a method for obtaining a better color rendering with a photoluminescence plate, and the better color rendering is obtained by using UV radiating on the photoluminescence plate stacked with a red photoluminescence plate, a green photoluminescence plate and a blue photoluminescence plate. Therefore, the color rendering is above 90% and close to the solar light. The photoluminescence plate can be made from directly coated with photoluminescence layers of three colors or with fully mixed fluorescent materials of three colors. Consequently, a white light relied on the present invention is more uniform than the conventional techniques with a color mixing performance based on tricolor LEDs.
Owner:CHANG GUNG UNIVERSITY
Lighting Control System
InactiveUS20120001567A1Low costElectric light circuit arrangementEnergy saving control techniquesLight equipmentSmart lighting
Intelligent illumination device are disclosed that use components in an LED light to perform one or more of a wide variety of desirable lighting functions for very low cost. The LEDs that produce light can be periodically turned off momentarily, for example, for a duration that the human eye cannot perceive, in order for the light to receive commands optically. The optically transmitted commands can be sent to the light, for example, using a remove control device. The illumination device can use the LEDs that are currently off to receive the data and then configure the light accordingly, or to measure light. Such light can be ambient light for a photosensor function, or light from other LEDs in the illumination device to adjust the color mix.
Owner:LUTRON TECH CO LLC
Multicolor LED assembly with improved color mixing
InactiveUS20070013057A1Improve color mixingSemiconductor/solid-state device detailsSolid-state devicesEngineeringColor mixing
In accordance with the invention, a multicolor LED assembly with improved color mixing comprises an assembly of closely-packed LED dice of different colors packaged for high temperature operation and arranged to minimize same-color adjacency to promote color mixing. The assembly of dice is encapsulated in a dispersive medium such as a transparent medium with entrained dispersive particles. The packaged assembly preferably includes a layer having light dispersing particles deposited directly on the LED.
Owner:LIGHTING SCI GROUP
Dynamic color or white light phosphor converted LED illumination system
InactiveUS20090026913A1Discharge tube luminescnet screensStatic indicating devicesPhosphorOptical power
A color tunable light emitting device includes multiple light emitting components such as light emitting diodes (LEDs) or laser diodes (LDs) with substantially the same emission characteristics, and multiple phosphors materials with different excitation and emission wavelengths, each excited by one of the light emitting components. The light emitting components are powered by an electrical circuit which allows separate control of the optical power output of the different light emitting components. The light from the light emitting components is arranged to impinge and excite a corresponding phosphor material such that the phosphors are excited and emit light at their characteristic wavelengths. By separately adjusting the power to each LED / LD, the amount of light emitted by each phosphor, and hence, through color mixing, the color of the light emitted, is varied.
Owner:LUMINATION
Color control system for color changing lights
InactiveUS20070064419A1Reduce system complexitySimplify the selection processDischarge tube incandescent screensElectric discharge tubesDriver circuitControl system
A system and method for color changing lighting comprising a pre-programmed controller along with driver circuit, a single or combination of LEDs and an OFF / ON switch which is used for making selection of mode of operation as well as switching the system ON / OFF. Brightness is changed using pulse width modulation. The LED's are selectively activated by programmed variable pulse to generate desired color mixing effect. The resulting illumination may be controlled by a computer / micro-controller program to provide pre-designed complex patterns of light in virtually any environment.
Owner:GANDHI SAMIR
Color mixing illumination light unit and system using same
An illumination light unit includes at least two light sources that generate light at different wavelengths. The illumination light unit also includes a reflecting cavity having one or more reflectors and a controlled transmission mirror disposed at an output of the reflecting cavity. The controlled transmission mirror includes an input coupling element, an output coupling element and a first multilayer reflector disposed between the input and output coupling elements. At least some of the light from the light sources is reflected within the reflecting cavity by the one or more reflectors and is mixed. Light passes out of the reflecting cavity through the controlled transmission mirror. The illumination light unit may be used for illumination purposes, or as part of a backlight for illuminating a display.
Owner:3M INNOVATIVE PROPERTIES CO
Double collimator LED color mixing system
ActiveUS20090121238A1Eliminating color fringingRemove colorPoint-like light sourceDiffusing elementsLight equipmentEffect light
The present invention is directed to a lighting apparatus. In one embodiment the lighting apparatus includes a plurality of light emitting diode (LED) chips. A first optic is coupled to the plurality of LED chips. A diffuser is coupled to the first optic. In addition, a second optic is coupled to the diffuser.
Owner:DIALIGHT CORP
Method and apparatus for providing panoramic view with high speed image matching and mild mixed color blending
ActiveUS20070159524A1Improves speed of colorImprove image stitching speedTelevision system detailsImage analysisSource imageImage matching
An apparatus and method of providing a panoramic image, the method including: preparing images of a plurality of levels, which are made by scaling each of two source images at several rates; computing a Sum of Square Difference (SSD) between two corresponding images in each of the plurality of levels of the two source images to form an image stitched together; and when stitching the two images, the overlapping area is divided into a plurality of parts and each part is assigned a weight which is linearly applied respectively to the divided part of each source image for blending color. The apparatus includes stitching units to stitch source images together at the plurality of levels and blending units to color blend the source images in the overlapped area.
Owner:SAMSUNG ELECTRONICS CO LTD
Networked architectural lighting with customizable color accents
ActiveUS20070285921A1Uniform brightnessLight source combinationsPoint-like light sourceMicrocontrollerCycle control
The present invention provides systems and apparatuses for dynamically controlling the operational modes of a single luminaire or a group of networked luminaires configured to deliver an illumination pattern having a decorative colored glow surrounding a central region of substantially uniform brightness. A control module for the luminaire is configured to drive three dimmable fluorescent ballasts, as well as a LED module. A variety of operational modes including different schemes for color mixing and color cycle control can be selected by a user and implemented by a microcontroller. A group of luminaires is connected in a standard communication protocol-based master-slave configuration, where the slave units respond to commands received from the master unit, and the last slave unit automatically engages terminating and biasing resistors for proper operation of the network.
Owner:ABL IP HLDG
Array layout for color mixing
Solid state lighting components are disclosed having multiple discrete light sources whose light combines to provide the desired emission characteristics. One embodiment of an LED component according to the present invention comprises a rectangular submount. A first group of blue shifted yellow (BSY) LED chips, a second group of BSY LED chips and a group of red LED chips are mounted on the submount. A plurality of contacts is arranged along one of the edges of the submount and accessible from one side of the component for applying electrical signals to the groups of LED chips.
Owner:CREELED INC
Total internal reflection lens for color mixing
ActiveUS20100091491A1Simple processSimple manufacturing processLight source combinationsPoint-like light sourceCamera lensTotal internal reflection
A total-internal-reflection (TIR) lens for color mixing includes a body member having an outer surface and an interior open channel extending longitudinally through the body member. The body member and the interior open channel are substantially symmetric with respect to an optical axis, and the outer surface is shaped to provide total internal reflection. The body member has a first end surface region at a first end of the open channel for accommodating a light source and a second end surface region opposite the first end region. The second end surface region includes a plurality of refractive surface regions positioned around the second end region of the open channel. The lens is configured to provide projected light substantially centered with respect to the optical axis when the light source is positioned off the optical axis. In a specific embodiment, a lighting apparatus for providing centered white light includes such a lens and a plurality of light sources.
Owner:LEDENGIN
Light emitting diode current control method and system
InactiveUS20060220571A1Electrical apparatusElectroluminescent light sourcesEngineeringLight-emitting diode
A method of accurately controlling at least one of an intensity, brightness, dimming or color mixing of a LED, the method comprising monitoring an actual current flowing through the LED, selecting a specific current based on at least one of a desired illumination intensity, a desired brightness, a desired dimming, or a desired color mixing, comparing said actual current and said specific current, and if a difference exists between said actual current and said specific current, adjusting said actual current to agree with said specific current.
Owner:NEXXUS LIGHTING
Tuning of emitter with multiple LEDs to a single color bin
ActiveUS8598793B2Uniform colorEase of mass productionElectrical apparatusElectroluminescent light sourcesActive feedbackTotal internal reflection
The color of an LED-based lamp can be tuned to a desired color or color temperature. The lamp can include two or more independently addressable groups of LEDs associated with different colors or color temperatures and a total-internal-reflection (TIR) color-mixing lens to produce light of a uniform color by mixing the light from the different groups of LEDs. The color of the output light is tuned by controllably dividing an input current among the groups of LEDs. Tuning can be performed once, e.g., during manufacture, and the lamp does not require active feedback components for maintaining color temperature.
Owner:LEDENGIN
Year-round decorative lights with multiple strings of series-coupled bipolar bicolor LEDs for selectable holiday color schemes
InactiveUS7175302B2Reduce in quantityNon-electric lightingLighting support devicesEffect lightEngineering
A decorative lighting apparatus includes a decorative light strand having first, second, and third wires, each with a plurality of lamps coupled in series therealong, and a return wire coupled to ends of the first, the second, and the third wires. Each lamp of the plurality of lamps has a first light-emitting diode (LED) device coupled in parallel and in reverse orientation with a second LED device. The first, the second, and the third wires are positioned together such that each lamp of the first, the second, and the third pluralities are positioned adjacent to each other but sufficiently separated such that little or no color mixing occurs between the lamps. The apparatus also includes a controller adapted to control the plurality of lamps to provide different user-selectable color schemes in various simultaneously-illuminated combinations of color.
Owner:YEAR ROUND CREATIONS
Networked architectural lighting with customizable color accents
The present invention provides systems and apparatuses for dynamically controlling the operational modes of a single luminaire or a group of networked luminaires configured to deliver an illumination pattern having a decorative colored glow surrounding a central region of substantially uniform brightness. A control module for the luminaire is configured to drive three dimmable fluorescent ballasts, as well as a LED module. A variety of operational modes including different schemes for color mixing and color cycle control can be selected by a user and implemented by a microcontroller. A group of luminaires is connected in a standard communication protocol-based master-slave configuration, where the slave units respond to commands received from the master unit, and the last slave unit automatically engages terminating and biasing resistors for proper operation of the network.
Owner:ABL IP HLDG
Manufacturing method of image forming apparatus, manufacturing apparatus of image forming apparatus, image forming apparatus, manufacturing method of panel apparatus, and manufacturing apparatus of panel apparatus
InactiveUS6254449B1Tube/lamp vessels exhaustionTube/lamp vessels closingManufactured apparatusImage formation
To obtain a stable image forming apparatus of a high quality without a luminance fluctuation and a color mixture due to a positional deviation, the following construction is disclosed. A method of manufacturing an image display apparatus in which a first substrate on which fluorescent body exciting means is arranged and a second substrate on which a fluorescent body that emits light by the fluorescent body exciting means is arranged are arranged so as to face each other and are adhered through joining members at their peripheries, wherein a seal bonding step of adhering the first and second substrates through a joining members and a step of performing a position matching of the first and second substrates are executed in a vacuum.
Owner:CANON KK
Illumination module for color display
ActiveUS7239449B2Increasing the thicknessImprove input efficiencyTelevision system detailsProjectorsLed arrayOptical axis
The invention relates to an illumination module for color display, preferably for use in data or video projectors as well as rear projection television sets, in which the light from at least three luminescent diodes (LEDs) or LED arrays of the base colors red, green and blue is collimated at a point provided for connection to a display unit and ranged on an optical axis of the illumination module. An LED or an LED array of a base color with a beam path (Lr) oriented in the direction of the display unit is arranged on the optical axis of the illumination module. For the purpose of color mixing, the LEDs and LED arrays of the other base colors are attached in such a way tat their beam paths (Lg, Lb) are laterally input in sequence under input angles (α, β) of <90 degrees into the beam path (Lr) of the first base color.
Owner:SYPRO OPTICS
Apparatus for visible light communication indicating communication quality using RGB color mixing and method thereof
InactiveUS20110026918A1Reception quality of dataRapidly and stably transmit dataClose-range type systemsTransmission monitoringCommunication qualityTarget signal
A visible light communication apparatus of the present invention includes: a target signal receiver filtering only a signal having a target wavelength from a visible light received signal received from a transmitting terminal; a signal generator judging a reception quality of the visible light received signal by using characteristics of the signal having the target wavelength and generating a visible signal by using at least one light source having a wavelength different from the target wavelength in accordance with the reception quality; and an optical signal transmitter transmitting the signal having the target wavelength for transmitting data together with the visible signal and changing a light emitting color of a visible light transmitted signal.
Owner:ELECTRONICS & TELECOMM RES INST
Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems
ActiveUS20060017402A1Easy to controlReduce the differenceElectrical apparatusElectroluminescent light sourcesControl signalLighting system
A control circuit for a lighting system allows analog control over a first range of illumination intensities in which the intensity of the illumination source varies in proportion to the voltage level of the control signal. The circuit provides for improved dimming and color mixing capability by allowing pulse width or frequency modulation control in addition to analog control over a second range of illumination intensities.
Owner:BOCA FLASHER
Display device
InactiveUS20070200488A1InhibitionWithout lowering light utilization efficiencyDischarge tube luminescnet screensElectroluminescent light sourcesDisplay deviceLight emitting device
The present invention provides an organic light emitting display device which suppresses occurrence of color mixing without lowering light use efficiency.The organic light emitting display device has a plurality of light emitting devices each disposed in a region surrounded with a lattice (cross)-like bank, and stripe-shaped pixels of an identical color are arranged side by side and displayed due to the emission of the light emitting devices. In the light emitting device, the height of the bank between identical color pixels is formed lower than the height of the bank between different color pixels, thereby suppressing wet spread between adjacent different color pixels to each other upon formation of identical color pixel formation.
Owner:PANASONIC LIQUID CRYSTAL DISPLAY CO LTD +1
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