467results about How to "Wide color gamut" patented technology

A lighting device comprising first and second groups of solid state light emitters, which emit light having dominant wavelength in ranges of from 430 nm to 480 nm and from 600 nm to 630 nm, respectively, and a first group of lumiphors which emit light having dominant wavelength in the range of from 555 nm to 585 nm. If current is supplied to a power line, a combination of (1) light exiting the lighting device which was emitted by the first group of emitters, and (2) light exiting the lighting device which was emitted by the first group of lumiphors would, in an absence of any additional light, produce a sub-mixture of light having x, y color coordinates within an area on a 1931 CIE Chromaticity Diagram defined by points having coordinates (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), (0.36, 0.38). Also provided is a method of lighting.

A color display device for displaying an n-primary color image wherein n is greater than three, the device including an array of sub-pixel (801) configured to have at least one repeating unit having one sub-pixel representing each of the n primary colors, wherein repeating unit (906) is configured to optimize at least one of the n-primary color image.

A lamp comprising a solid state light emitter, the lamp being an A lamp and providing a wall plug efficiency of at least 90 lumens per watt. Also, a lamp comprising a solid state light emitter and a power supply, the emitter being mounted on a heat dissipation element, the dissipation element being spaced from the power supply. Also, a lamp, comprising a solid state light emitter and a heat dissipation element that has a heat dissipation chamber, whereby an ambient medium can enter the chamber, pass through the chamber, and exit. Also, a lamp, comprising a light emissive housing at least one solid state lighting emitter and a first heat dissipation element. Also, a lamp comprising a heat sink comprising a heat dissipation chamber. Also, a lamp comprising first and second heat dissipation elements. Also, a lamp comprising means for creating flow of ambient fluid.

A sign comprising a surface having a display, and a plurality of sources of visible light. The sources of visible light are oriented to illuminate at least a portion of the display, and include solid state light emitters and/or luminescent materials. Line segments drawn on a Chromaticity Diagram connecting coordinates of some of the illumination color hues define a shape which encompasses coordinates of the display color hue(s). Also, a sign comprising a surface having a display having a surface area of at least 4 square meters, and at least 100 sources of visible light including solid state light emitters and/or luminescent materials. Also, a sign comprising a white light source and at least one additional source of light. Also, methods of illuminating signs.

There is provided a lighting device that comprises at least one 600-630 nm solid state light emitter and at least one light source emitting light within an area on a 1931 CIE Chromaticity Diagram defined by a first set of points having x, y coordinates of (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), (0.36, 0.38), or a second set of points having x, y coordinates of (0.29, 0.36), (0.32, 0.35), (0.41, 0.43), (0.44, 0.49), (0.38, 0.53). Some embodiments further comprise at least a first power line. Also provided are methods that comprise illuminating at least one light source to emit light within one of the areas defined above, and illuminating at least one 600-630 nm emitter.

Some embodiments of the invention provide a device, system and method for displaying a color image. According to some exemplary embodiments of the invention a device for displaying a color image may include an illumination source including a plurality of light-producing elements able to produce light of each of m different wavelength spectra, wherein m is equal to or greater than three. The device may also include an array of attenuating elements able to spatially selectively attenuate the light produced by the illumination source according to an attenuation pattern corresponding to a gray-level representation of the color image, and an array of color sub-pixel filter elements able to receive selectively attenuated light from the array of attenuating elements, each sub-pixel filter element able to transmit light of one of n different primary colors, wherein n is equal to or greater than four.

A lamp comprising a solid state light emitter, the lamp being an A lamp and providing a wall plug efficiency of at least 90 lumens per watt. Also, a lamp comprising a solid state light emitter and a power supply, the emitter being mounted on a heat dissipation element, the dissipation element being spaced from the power supply. Also, a lamp, comprising a solid state light emitter and a heat dissipation element that has a heat dissipation chamber, whereby an ambient medium can enter the chamber, pass through the chamber, and exit. Also, a lamp, comprising a light emissive housing at least one solid state lighting emitter and a first heat dissipation element.

A color signal processing method includes calculating a mixing ratio for source primary colors of a color reproducing device through which an input color signal having standard primary colors is reproduced, mixing the source primary colors according to the calculated mixing ratio to obtain reconstructed primary colors, and transforming the input color signal to match a color gamut of the reconstructed primary colors and outputting the transformed color signal. Thus, the color gamut of the color reproducing device can be freely adjusted within a reproduction range thereof according to the input color signal.

The invention provides a lighting unit comprising a source of blue light, a source of green light, a first source of red light comprising a first red luminescent material, configured to provide red light with a broad band spectral light distribution, and a second source of red light comprising a second red luminescent material, configured to provide red light with a spectral light distribution comprising one or more red emission lines. Especially, the first red luminescent material comprises (Mg,Ca,Sr)AlSiN₃:Eu and/or (Ba,Sr,Ca)₂Si_5-xAl_xO_xN_8-x:Eu, and the second red luminescent material comprises K₂SiF₆:Mn.

The first color gamut conversion unit 102 limits, in a visually natural manner, an output signal to a signal within a range of the DCI color gamut through well-known color gamut conversion processing when there is a color region exceeding the DCI color gamut, the output signal being obtained through the imaging by the imaging unit 101 and represented by the primaries (R, G, and B) determined by a color filter of an image sensor of the camera. It is to be noted that a color gamut conversion technique may be any technique which can limit a color gamut such as gamut conversion processing (Non Patent Literature: “Fundamentals of Color Reproduction Engineering”, Corona Publishing Co., Ltd., pp. 178-180).

There is provided an image processing apparatus capable of preventing colors from changing while being displayed when images are combined. The image processing apparatus according to an embodiment includes a video graphic processor 12 that combines a plurality of image signals to generate a combined image signal and an HDMI Tx 14 that transmits, when the combined image signal is transmitted, an identification flag of one of a first color space standard and a second color space standard having a color gamut wider than a color gamut of the first color space standard as the color space standard of the combined image signal and a host CPU 13 decides the first or second color space standard so as to prevent change in color while being displayed.

A device to produce a color image, the device including a color filtering arrangement to produce at least four colors, each color produced by a filter on a color filtering mechanism having a relative segment size, wherein the relative segment sizes of at least two of the primary colors differ.

A portable electronic device includes a portable electronic device housing having a surface and a primary, light-emissive display. A display skin covers a portion of the surface of the portable electronic device housing. The display skin provides a secondary, light-reflective display. The display skin includes an optically active layer comprising electrooptical material. A first electrode layer is disposed on a first side of the optically active layer proximal the surface of the portable electronic device housing. A second electrode layer disposed on a second side of the optically active layer distal of the surface of the portable electronic device housing. Electronic circuitry selectively activates the optically active layer such that images including portions of a document are selectively displayed by the display skin. The display skin is capable of maintaining a display of a selectively displayed portion of the document while the primary display is in an unpowered state.

The invention discloses a laser light source and a projection display device. Red light emitting efficiency is improved, and accordingly the advantage of improving overall brightness of the laser light source is achieved. The laser light source comprises an excitation light source body, a fluorescent wheel, a color filtering wheel and a control unit. The fluorescent wheel comprises a reflection portion and a transmission portion allowing the excitation light source body to transmit, and a fluorescent body capable of emitting yellow light after being excited by the excitation light source body and a fluorescent body capable of emitting green light after being excited by the excitation light source body are attached to the surface of the reflection portion. The color filtering wheel comprises a transparent portion, a red color filtering portion and a green color filtering portion. The control unit controls the fluorescent wheel and the color filtering wheel to rotate synchronously, the transparent portion of the color filtering wheel corresponds to the transmission portion of the fluorescent wheel and a part of the fluorescent body capable of emitting the yellow light after being excited by the excitation light source body, the red color filtering portion of the color filtering wheel corresponds to the other part of the fluorescent body capable of emitting the yellow light after being excited by the excitation light source body, and the green color filtering portion of the color filtering wheel corresponds to the a fluorescent body capable of emitting the green light after being excited by the excitation light source body.

The invention discloses a water-based dye ink and an application thereof. The water-based dye ink comprises the following components in percent by weight: 0.2 to 12 percent of water-soluble dye, 55 to 80 percent of modified acrylic resin emulsion, 0.01 to 1 percent of ultraviolet absorbent and balance of water, and different additives can be added. The dye ink can be applicable to the fields such as jet ink, cipher paint ink, textile printing ink, water-type printing ink, fountain pen ink and water ball pen ink, and has the advantages of water resistance, oil resistance, scratch resistance, illumination resistance, high temperature resistance, low temperature resistance, good color reducibility, duration and the like.

LED devices emitting white light comprise a blue-emitting LED, green-emitting quantum dots (QDs) and red-emitting K₂SiF₆:Mn⁴⁺ (KSF) phosphor. A backlight unit (BLU) for a liquid crystal display (LCD) comprises one or more blue-emitting LEDs and a polymer film containing green-emitting QDs and KSF phosphor. The QDs and/or KSF phosphor may be encapsulated in beads that provide protection from oxygen and/or moisture.

The invention discloses a modified polyurethane resin emulsion dye ink and an application thereof. The modified polyurethane resin emulsion dye ink comprises the following components based on weight ratio: 0.1-12% of solvent dye and/or water-soluble dye, 13.5-49.8% of polyurethane resin solid content, 0.01-1% of ultraviolet absorber and the balance of solvent, wherein various additives can be added in the dye ink. The dye ink disclosed in the invention can be used in the fields such as jet ink, cipher paint ink, textile printing ink, aqueous printing ink, fountain pen word ink, rolling maker ink, coating, leather finishing agent, surface finishing and the like, and has the advantages of good storage stability, excellent water resistance, chemical resistance and light resistance, favorable mechanical performance, high brightness, high and low temperature resistance, ageing resistance, good color reproducivity and transparency, easily-obtained raw materials, simple manufacture, easy detection, low cost and wide market application prospect.

An organic light emitting device (OLED) having increased light output efficiency and a wide color gamut, and a color display apparatus employing the OLED, includes: a substrate; a reflective electrode formed on the substrate; an organic light emitting layer formed on the reflective electrode; a semi-transparent or transparent electrode formed on the organic light emitting layer; and an optical path control layer formed on the semi-transparent or transparent electrode and formed of a light transmitting material. In the OLED, resonators are formed between the reflective electrode and the semi-transparent or transparent electrode, between the reflective electrode and the top surface of the optical path control layer, and between the top surface of the semi-transparent or transparent electrode and the top surface of the optical path control layer, respectively, therefore, as an optical mode output to the exterior of the optical path control layer, at least two multiple resonances are generated.

Disclosed is a color liquid display (LCD) employing a transmissive color liquid display panel. The display includes a complementary color light emitting diode, which is one of a cyan light emitting diode (21C), emitting cyan light, a yellow light emitting diode, emitting yellow light, and a magenta light emitting diode, emitting magenta light, in addition to light emitting diodes emitting three prime colors, as a light source. The display also includes a complementary color filter, having at least one of a cyan filter CFC having a transmission wavelength range corresponding to the cyan light, a yellow filter CFY having a transmission wavelength range corresponding to the yellow light and a magenta filter CFM having a transmission wavelength range corresponding to the magenta light, in addition to a tristimulus color filer, as a color filter (19).

Disclosed is a backlight device used for a color liquid crystal display (LCD) apparatus. The red light, green light and blue light, generated by a light source, made up by a red light emitting diode (21R), a green light emitting diode (21G) and a blue light emitting diode (21B), respectively, are mixed together to generate white light. The red light has a half-value width hwr such that 15 nm≦hwr≦30 nm, and the green light has a half-value width hwg such that 25 nm≦hwg≦50 nm. The blue light has a half-value width hwb such that 15 nm≦hwb≦30 nm. The white light illuminates a transmissive color liquid crystal display panel (10) from its back side. The transmissive color liquid crystal display panel includes a color filter (19) made up by a tristimulus filter for wavelength-selecting and transmitting red light, green light and blue light.