Abstract: A white light emitting device including: a blue light emitting diode chip having a dominant wavelength of 443 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue light emitting diode chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, and the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram.

Abstract: A light emitting device is produced using one or more light emitting diodes within a light mixing cavity formed by surrounding sidewalls. The light emitting device includes a light adjustment member that is movable to alter the shape or color of the light produced by the light emitting device. For example, the light adjustment member may alter the exposure of the wavelength converting area to the light emitted that is emitted by the light emitting diode in the light mixing cavity. Alternatively, the height of a lens may be adjusted to change the width of the beam produced. Alternatively, a movable substrate with areas of different wavelength converting materials may adjustably cover the output port of the light mixing cavity to alter the color point of the light produced.

Abstract: An apparatus for optical examination of documents. The apparatus includes a light source, a plurality of panels which are exchangeable with each other, a viewing unit having a window formed by at least one of the plurality of exchangeable panels through which window light emitted from the light source exits for examination of documents by an observer. Further included is a coupling unit configured to supply the light emitted from the light source into the viewing unit. The light source and the viewing unit are coupled together by a light guide and the light guide is adapted to supply the light from the light source to the coupling unit. At least one of the plurality of exchangeable panels is a fluorescent panel including a fluorescent substance. The fluorescent panel is fluorescent in the yellow-red-infrared wavelength range when being illuminated with light in the ultraviolet-blue-green wavelength range.

Abstract: A light source is disclosed. The light source includes a primary excitation source configured to emit electromagnetic radiation at a first peak wavelength and a band of wavelengths around the first peak wavelength. A secondary emitter conversion element is optically coupled to the primary excitation source and is configured to absorb at least a portion the electromagnetic radiation at the first peak wavelength from the primary excitation source and emit electromagnetic radiation at a second peak wavelength and a band of wavelengths around the second peak wavelength. The second peak wavelength is longer than the first peak wavelength. A non-imaging optical coupler is optically coupled to the secondary emitter conversion element. An optical system includes the light source optically coupled to a transparent rod.

Abstract: A rainbow wheel that colors light that is passed therethrough. The wheel can be formed using a photolithographic process. Another supermagenta wheel can be used to increase the number of colors that can be obtained.

Abstract: In a light emitting device and system providing white light with various color temperatures are provided, a light emitting device includes a light emitting element (LED) that is operated by a driving bias and emits first light, and a phosphor layer including a phosphor that partially wavelength-converts first light and emits second light, thereby emitting white light using the first light and the second light, wherein the phosphor has a maximum conversion efficiency at a first level of the driving bias, and the LED has a maximum conversion efficiency at a second level of the driving bias, the first level being different from the first level.

Abstract: The degradation of directivity performance due to stray light with poor directivity entering and propagating through tapered light guiding members can be prevented, and thus the decrease in the degree of spectrum correspondence with sunlight can be prevented. A light shielding member 41 is placed in between adjacent tapered light guiding members 4. Specifically, the light shielding member 41 is attached to or coiled around the surface of a circumference wall of the tapered light guiding member 4, other than one end surface and the other end surface for allowing light to enter and exit. Further, the light shielding member 41 is placed so that stray light will not enter the tapered light guiding member 4 from the circumferential wall thereof, other than the one end surface and the other end surface.

Abstract: A two-dimensional wedge shaped UV and IR filter is formed by or substantially same size pieces of glass forming a two-dimensional wedge. The wedge reflects radiation in four different directions.

Abstract: Disclosed is a display device capable of achieving a decorative effect by utilizing a color filter at the front of a light-emitting display unit. Also disclosed is a meter device using the display device. Specifically disclosed is a display device comprising a light-emitting display unit and a color filter, which is arranged at the front of the light-emitting display unit. A light-emitting element for decoration is provided on the outside of the light-emitting display unit. The color filter is provided with a light-discharging surface for discharging the light from the light-emitting element for a decorative appearance in the forward direction.

Abstract: Spot illumination apparatus and methods are described. According to one implementation a spot luminaire includes a light source for emitting a beam of light and a projection lens configured to project the beam of light towards a distant target. A first field stop, through which the beam of light passes, is positioned between the light source and the projection lens. A filter apparatus is positioned proximate the first field stop and is adapted for selectively moving at least one variable density filter across the beam of light. A relay lens group is positioned between the first field stop and the projection lens. The relay lens group is configured to prevent the at least one variable density filter from being imaged by the projection lens. Methods for providing stage lighting are also described.

Abstract: A transmissive display device includes: a light source which outputs light; a display part which receives the light from the light source and generates display light representing an image; a deflecting element which changes a direction of the display light emitted from the display part; and a transmissive reflector which reflects, towards a user, light of a wavelength included in the display light emitted from the display part, and transmits light of other wavelengths. An angle formed by a straight line, which extends between an upper edge of an incident area of the display light on the transmissive reflector and a lower portion of an eyebox which is defined as a visible range of the reflected light from the transmissive reflector, with respect to a horizontal line is smaller than a difference between an emission angle and an incident angle of the display light at the transmissive reflector.

Abstract: A lamp unit with a relay lens that allows two different focus points. Two different optical altering elements are hence simultaneously in focus. The elements can be taken in and out of focus to allow different effects.

Abstract: LED lighting systems operate their LED above a junction temperature of 85° C. and space apart from the LED, components of the LED lighting system that reduce an expected lifetime of the LED lighting system to less than 25,000 hours as a result of operating the LED above the junction temperature of 85° C. Accordingly, the LED itself may be driven hotter than is conventionally the case, without impacting its lifetime. By allowing the LED to operate hotter, reduced heat sinking may be needed for the LED itself, which can decrease the cost, size and/or complexity of the thermal management system for the LED lighting system and/or can allow a thermal budget for the LED lighting system to be used elsewhere. Related structures are also described.

Abstract: A light bulb includes a base for mechanically mounting the light bulb and for receiving electrical power, a light guide, and a light source that directs output light into the light guide. The light source includes a light emitting device that emits light, and a variable spectrum adjuster that is variably positionable relative the light path of light emitted by the light emitting device. The spectrum adjuster includes a region of continuously-variable spectrum-adjusting material, usable for adjusting the spectrum of light passing through the spectrum adjuster. In some embodiments, the spectrum adjusting material is a color-attenuating material, such as a filtering material. In other embodiments, the spectrum-adjusting material is a wavelength-shifting material, such as a phosphor, or another suitable type of material that shifts the wavelength of light incident.

Abstract: A light source includes a light emitting device that emits light, and a spectrum adjuster that is positionable relative a light path of the light emitted by the light emitting device. The spectrum adjuster includes a region of continuously-variable spectrum adjusting material, usable for adjusting the spectrum of light passing through the spectrum adjuster. The variable spectrum adjusting material may be color-attenuating material, such as a filtering material, or may be wavelength-shifting material, such as a phosphor. The light source has adjustable spectrum of its output light depending upon the relative positioning of the light emitting device and the spectrum adjuster.

Abstract: A color filter and a liquid crystal display device with the color filter that includes a substrate; and a color layer formed on the substrate and constituting color pixels of a plurality of colors, wherein the color layer is formed through a curing of a color composition comprising at least acrylic resin and a coloring agent, wherein the acrylic resin contains a copolymer formed of a first vinyl monomer having a benzyl group and a second vinyl monomer having a carboxyl group, the first vinyl monomer having a function of regulating a retardation of a color layer, the copolymer having a weight average molecular weight of 3000 to 11000 and an acid value of solid matter falling within the range of 30 to 85.

Abstract: Gobo wheel assembly has multiple gobo devices on a rotatable wheel. A central sun gear can rotate all the gobos. The gobos can be inserted and released from the wheel assembly.

Abstract: Disclosed is a color composition for a color filter, which includes at least acrylic resin and a coloring agent. The acrylic resin contains a copolymer formed of a first vinyl monomer having a benzyl group and a second vinyl monomer having a carboxyl group, the copolymer having a weight average molecular weight of 3,000 to 11,000, and an acid value of solid matter of the copolymer being confined to 30 to 85.

Abstract: A front cover for a vehicle lighting fixture is attached to the front opening part of the vehicle lighting fixture having a lamp body and a light source installed in the lamp body. A part of the surface of the front cover opposed to the light source includes a heating element having a three-dimensional curved surface. The heating element includes a mesh pattern having intersections of a large number of grids formed of conductive metallic filaments and a first electrode and a second electrode formed at both opposed ends of the mesh pattern. The projection shape of the outline of the entire mesh pattern is formed in a rectangular shape having the longitudinal direction, for example, between the first electrode and the second electrode.

Abstract: A device is provided with a semiconductor gain medium (1) having an inclined or curved stripe structure, a Volume Bragg Grating element (3) constituting a resonator with the semiconductor gain medium (1), and a wavelength conversion element (5) which outputs a harmonic wave (H) of a fundamental wave (A) from the resonator. Preferably, the semiconductor gain medium (1) is a frequency incoherent and broadband semiconductor gain medium, the wavelength conversion element (5) is a periodic polarization type nonlinear wavelength conversion element, and the Volume Bragg Grating element (3) and the periodic polarization type nonlinear wavelength conversion element (5) have a grating period having a chirped structure.

Abstract: A lighting device and a display apparatus are disclosed. The lighting device includes at least one light source installed on a substrate, spaced apart a predetermined distance from each other, and a filter member provided over the at least one light source having a variable thickness. Light emitted from the at least one light source transmits through the filter member. The display apparatus includes a panel that displays an image, a front cover that supports a front edge portion of the panel, and a lighting device mounted in an open portion formed at the front cover, the lighting device being exposed outside.

Abstract: A backlight unit which is a lighting device is provided with: a diffusion plate; a chassis having rising sections which are provided at the outer periphery of the main flat surface thereof and supporting the diffusion plate; light-emitting modules disposed at the main flat surface and the rising sections of the chassis and applying light to the diffusion plate; and reflecting sheets disposed at the main flat surface and the rising sections of the chassis and reflecting the light, which is emitted from the light-emitting modules, toward the diffusion plate. The reflecting sheets have formed thereon sloped sections for reflecting, toward the diffusion plate, the light emitted from the light-emitting modules disposed at the rising sections.

Abstract: The invention relates to a filter device for an illumination system, especially for the correction of the illumination of the illuminating pupil, including a light source, with the illumination system being passed through by a bundle of illuminating rays from the light source to an object plane, with the bundle of illuminating rays impinging upon the filter device, including at least one filter element which can be introduced into the beam path of the bundle of illuminating rays, with the filter element including an actuating device, so that the filter element can be brought with the help of the actuating device into the bundle of illuminating rays.

Abstract: A color wheel comprises: a rotatable disc having a light reflective face and a region of photoluminescence material deposited on the light reflective face. The region of photoluminescence material comprises a substantially uniform thickness layer of a mixture of particles of the photoluminescence material that is deposited on the light reflective face of the disc by screen printing. The photoluminescence materials can comprise blue light or UV excitable photoluminescence materials such as phosphor materials or quantum dots. Color modulated light sources and a method of manufacturing a color wheel are also disclosed.

Abstract: A lighting apparatus having a light source and at least a medium layer is provided. The light source emits a first light beam with a first main wavelength and a second main wavelength, wherein the first main wavelength is less than the second main wavelength. The medium layer is allocated corresponding to the light source. The medium layer has a transmittance not less than 60% and a toner mixed therein. After the first light beam passes through the medium layer, a peak attenuation of the first main wavelength is larger than that of the second main wavelength.

Abstract: A system for creating illumination art includes a directional light source unit, prisms, and suspensions/supports for suspending or supporting the prisms between the light source and a surface onto which light from the light source is projected, such that the crystals appear to float in the image projected onto the surface. The light source may be an incandescent or LED source, and the prisms may be Swarovski® Strass® lead crystals. The prisms, suspensions/supports, light source unit, and/or other elements of the system may be provided in kit form.

Abstract: A display device includes a light source, a first light emitting portion, a second light emitting portion, a light modulating portion and a light focusing portion. The first light emitting portion is disposed in a display area and emits a light that is provided by the light source and has a first luminous state. The second light emitting portion is disposed adjacent to the first light emitting portion in the display area and emits a light that is provided by the light source and has a second luminous state different from the first luminous state. The light modulating portion modulates a state of the light emitted from the light source into the first luminous state. The light focusing portion focuses the light modulated by the light modulating portion on the first light emitting portion.

Abstract: Provided is a lighting device capable of correcting loss of color balance of illumination light that tends to occur among a plurality of light source modules and providing uniform illumination light of the same color. A lighting device 1 including a plurality of light source modules 2A to 2D corrects the color of light emitted from each light source module to emit uniform illumination light of the same color.

Abstract: A color mixer for producing a colored beam of light in combination with a light source. The color mixer includes a plurality of color media configured to pass a light beam such that the color media may be repositioned relative to one another to produce a color mixing effect resulting in many available combinations of color and hue.

Abstract: A sheet of the present invention is a sheet which is to be used such that light from a light emitting body impinges on one of surfaces of the sheet and outgoes from the other surface. The other surface of the sheet includes a plurality of minute regions 13, a largest inscribed circle of the minute regions 13 having a diameter from 0.2 ?m to 2 ?m. Each of the plurality of minute regions 13 is adjoined by and surrounded by some other ones of the plurality of minute regions 13. The plurality of minute regions 13 include a plurality of minute regions 13a which are randomly selected from the plurality of minute regions 13 so as to constitute 20% to 80% of the minute regions 13 and a plurality of minute regions 13b which constitute the remaining portion of the minute regions 13. Light transmitted through the plurality of minute regions 13a and light transmitted through the plurality of minute regions 13b have a phase difference of ?.

Abstract: A high efficiency lighting system (100) is described that has a small etendue. This can be used, for example, for backlighting a display device such as a liquid crystal display (LCD), projection displays, as well as for general lighting purposes. A portion of the light from a light emitting device die (101) falls onto a fluorescent material (105,106), such as phosphor. Dichroic mirrors (107,109) prevent the light generated by the fluorescent material to return to the light-emitting device. The mirrors may also provide collimation of the generated light and the remainder of the light from the light-emitting device. In this way a high efficiency system is realized because little or no generated light is absorbed and the generated light does not have to travel through a fluorescent material layer and thus has a high chance to go in the desired direction.

Abstract: A rainbow wheel that colors light that is passed therethrough. The wheel can be formed using a photolithographic process. Another supermagenta wheel can be used to increase the number of colors that can be obtained.

Abstract: The present teachings relate to semiconductor-based lighting systems and fixtures which process electromagnetic energy from light emitting diodes or the like. A disclosed exemplary system includes at least one occluded remote phosphor and produces substantially white light of desired characteristics. The remote phosphor extends over at least a portion of a surface of a macro optic at an occluded location such that none of the remote phosphor is directly visible through an optical aperture. The phosphor is responsive to electromagnetic energy from a semiconductor device to emit visible light for the emission through the optical aperture.

Abstract: An opto-electronic device package structure for multicolor light is disclosed. The package structure comprises a transparent carrier, a circuit layer on the transparent carrier, an opto-electronic device emitting the light of the first wavelength and is electrically connecting with the circuit layer on the transparent carrier, a first wavelength conversion structure on the lateral side of the opto-electronic device, a reflective layer on the first wavelength conversion structure, and a transparent material for package on the reflective layer and on the opto-electronic device.

Abstract: A method for performing a color gamut based white balancing of a digital image, the method includes: determining at least one filtering parameter based upon a relationship between candidates and color gamuts that are associated with different illumination conditions; wherein each candidate represents a pixel area; selecting selected candidates by filtering the candidates; wherein the filtering is responsive to at least one filtering parameter; calculating at least one white balance compensation parameter in response to pixel information of the selected pixel areas; and providing a compensated digital image by applying at least one white balance compensated parameter.

Abstract: A lighting device includes a base, a light source, an optical color wheel, and a lens. The base has a plurality of fins for heat dissipation. The light source is disposed in the base, and the optical color wheel is disposed above the light source and in contact with the base. The lens is movably disposed on the base. The Light from the light source passes through the optical color wheel to form colored light. The colored light passes through the lens to form a light beam. Heat generated by the light source and the optical color wheel is dissipated by the fins.

Abstract: A stage light fixture is provided with a main body extending along a longitudinal axis; with a light source arranged inside the main body at a closed end of the main body and adapted to emit a light beam substantially along the axis; with an objective lens arranged at an open end of the main body opposite to the closed end along the axis; and with light beam adjusting means arranged between the light source and the objective lens for intercepting the light beam, which are movable along the axis of the main body.

Abstract: An illuminator and a method for fabricating the illuminator are disclosed. The illuminator comprises at least a light source and a discriminator. The light source comprises one or more luminescent layers that substantially convert the energy of a primary electromagnetic radiation to an output radiation. The discriminator comprises one or more layers that substantially transmit the primary electromagnetic radiation to the one or more luminescent layers and reflect at least a portion of the output radiation from the one or more luminescent layers to the viewing hemisphere. A method for applying the illuminator to an object is also disclosed.

Abstract: A stage lighting fixture having : a light source for emitting a light beam along an optical axis; a reflector coupled to the light source; at least one dichroic filter for selectively intercepting the light beam; and at least one heat-shield assembly located between the light source and the dichroic filter, and having a heat-shield filter, in turn having a first portion with first beam filtering properties, and a second portion with second beam filtering properties.

Abstract: There is provided a light emitting module including: a circuit board; at least one light source part disposed on the circuit board; a wavelength conversion part coupled with the circuit board, the wavelength conversion part covering alight emitting surface of the light source part and converting a wavelength of light; and a coupling part coupling the wavelength conversion part to the circuit board.

Abstract: The invention relates to a lamp for motor vehicles that at least comprises a first incandescent filament that is intended to produce a light beam having a light/dark cutoff line, the incandescent filament having associated with it for this purpose a shielding cap to restrict the light emitted to a given angular range. The shielding cap (4) has at least one opening that is intended to produce a light beam above the light/dark cutoff line, with at least part of this light beam, which light beam passes through the said opening, not passing through and/or passing through a color filter.

Abstract: The invention is directed to a multispectral illumination device for a microscope or for a reader. According to the invention, the illumination device comprises at least three receptacle positions for lighting modules and at least one receptacle position for coupling modules, the mechanical devices for connecting the lighting modules or coupling modules at the receptacle positions to the illumination device being designed in such a way that the lighting modules or coupling modules can be easily changed. Further, the receptacle positions are arranged in such a way that, with suitable selection of the lighting modules and coupling modules, all individual spectra of the lighting modules in a total spectrum are available simultaneously at the output of the illumination device.

Abstract: The present invention relates to an illumination device, comprising a white LED, a red LED and a color filter. A hight color rendering index (CRI, Ra) and a high value of R9 (for strong red) can be obtained. One application is medical lighting, for example for surgical lights.

Abstract: An illumination system and a projection device comprising the same are provided. The projection device further comprises an imaging system. The illumination system comprises a first light source, a dichroic element and a wheel plate. The dichroic element comprises a first dichroic portion and a second dichroic portion. The first light source provides a first wave band light, which is reflected to the wheel plate by the first dichroic portion. When being projected onto a wave band transforming area of the wheel plate, the first wave band light will be transformed into a second wave band light by the wave band transforming area and then emits through the first dichroic portion and the second dichroic portion. When being projected onto a reflecting area of the wheel plate, the first wave band light will be reflected by the reflecting area to emit through the second dichroic portion.

Abstract: A light source device includes a light source unit emitting light of a first wavelength and a wavelength converting element converting light of the first wavelength into light of a second wavelength. An external mirror transmits light of the second wavelength toward an emission destination and reflects light of the first wavelength to resonate between the light source unit and the external mirror. A wavelength separating section transmits light converted from the first wavelength to the second wavelength while traveling from the external mirror to the light source unit and reflects light of the first wavelength in order to separate the different wavelength light. A turnback section reflects light of the second wavelength separated by the wavelength separating section toward the emission destination. In addition, the wavelength separating section reflects light of the first wavelength from the light source unit to travel toward the wavelength converting element.

Abstract: A two-dimensional wedge shaped UV and IR filter is formed by or substantially same size pieces of glass forming a two-dimensional wedge. The wedge reflects radiation in four different directions.

Abstract: Optical elements having components made from high refractive index materials (RI?1.6) and lamp assemblies incorporating such elements. Various optical elements, such as total internal reflection lenses, can be fabricated from materials having a higher index of refraction than materials typically used in such elements. The compact optical elements have at least one internal reflection surface that directs radiant energy (e.g., light) from a receiving end to a transmitting end. By using a high refractive index material, a lens can be fabricated that directs a greater portion of the light emitted from a source into the lens toward the transmitting end of the lens. Thus, less of the light spills out of the lens at a surface where emission is not intended, reducing the number of lossy bounces needed to direct the light in a particular direction.

Abstract: An apparatus for providing a multicolored illuminator is disclosed. In one embodiment, the apparatus comprises a first sheet comprising a plurality of columnar illuminators stacked side by side, and a plurality of colored light sources placed along an edge of the first sheet. The plurality of columnar illuminators diffuse light generated by the plurality of colored light sources. The light emanates in a predetermined pattern.

Abstract: A light assembly that includes a base, a housing extending from the base having a partial paraboloidal cross-sectional surface, a light-shifting element disposed within the housing, and a plurality of light sources coupled to the housing. The light sources generate light. The light assembly also includes an angular portion reflecting light from the light sources toward the parabolic cross-sectional surface so that the light reflected from the parabolic surface is directed toward the light-shifting element and light reflected from the light-shifting element is directed out of the housing after reflecting from the housing.

Abstract: A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).