Abstract: An illumination aperture diaphragm 100A which is used in a light source device to simultaneously observe a subject image formed by reflected illumination light in the visible light region and a fluorescence image from a fluorescent substance in a subject has a filter region 1 formed in a flat plate-like base material 3 and an aperture region 2 formed inside the filter region 1. The filter region 1 transmits light in the wavelength region of excitation light for allowing the subject to emit fluorescent light and reduces or blocks the transmission of the light in the visible light region that forms the subject image. An illumination aperture diaphragm 200A may include a plurality of diaphragm blade members 20A which are each provided partially or entirely with a filter portion 21, so that a filter region 1 is formed of the plurality of diaphragm blade members 20A and an aperture region 2 is formed inside the filter region 1.

Abstract: An optoelectronic module for emitting monochromatic radiation in the visible wavelength range is specified. The module has a plurality of light emitting diode chips which generate UV radiation. The UV radiation is converted into light in the visible range, for example, into green light, by a wavelength converter. The coupling-out of light from the module is optimized by the use of two selectively reflecting and transmitting filters. This module can be used as a light source in a projection apparatus.

Abstract: An optical sensing apparatus with anti-dust structure, for sensing a rotation device which has a rotation surface rotating along a rotation direction, includes a base, an optical sensor, and a stop block. The stop block is located beside the optical sensor and disposed with the optical sensor on the base in accordance with the order of the rotation direction. A distance between a stagnation surface of the stop block and the rotation surface is shorter than a distance between a sensing surface of the optical apparatus and the rotation surface. When an air flow passes between the stagnation surface and the rotation surface, dust within the air flow could be partially deposited on the stagnation surface so as to reduce the deposition amount of the dust on the sensing surface. A filter apparatus with the optical sensing apparatus and a projector with the filter apparatus are also disclosed.

Abstract: A display device includes a display member that displays an image, and a window member arranged on an upper surface of the display member. The window member includes a base member and a color layer, and the color layer is arranged on a lower surface of the base member and partially overlaps the display member. A part of the window member overlaps the display member, and the part of the window member receives a portion of the image from the display member as a received image and transmits the portion of the image therethrough as a transmitted image.

Abstract: The invention relates to a variable-spectrum solar simulator for characterising photovoltaic systems. The simulator can be used to obtain a spectrum adjusted to the solar spectrum, both for a standard spectrum or a real spectrum adjusted to local irradiation conditions. The simulator also allows the spatial-angular characteristics of the sun to be reproduced.

Abstract: A plant growing system of the present invention includes: a first light source for irradiating red light to a plant; a second light source for irradiating far-red light to the plant; a control part that controls irradiation operations of the first light source and the second light source; and a time setting part that sets a time zone in which the control part operates the irradiation of the first light source and the second light source. The time setting part is designed such that the first light source starts red light irradiation before sunset; and the second light source starts far-red light irradiation after the red light irradiation.

Abstract: A lighting device includes a support member provided with a wiring portion. The lighting device further includes an LED light source placed on the wiring portion, and an insulating layer. The insulating layer is provided on the wiring portion except a region at which the LED light source is placed. The LED light source is covered by a light-transmitting resin portion. A fluorescent substance is dispersed in the light-transmitting resin portion. The fluorescent substance is a sulfide-based fluorescent material.

Abstract: A light bulb shaped lamp according to the present invention includes: a hollow globe having an opening; a plurality of light-emitting modules housed in the globe, each of the light-emitting modules having a semiconductor light-emitting device that is a light source; and a stem extending from the opening of the globe to an inside of the globe, the stem supporting the light-emitting modules, in which the stem penetrates at least one of the light-emitting modules, and the light-emitting modules are spaced a predetermined distance apart along an axis of the stem.

Abstract: An awareness ribbon novelty lamp assembly provides an illuminated awareness novelty in low light conditions. The lamp assembly includes a three-dimensional, awareness ribbon construction and a cap assembly. The awareness ribbon construction is constructed from a light-penetrative material and defines an awareness ribbon shape. The upper end of the ribbon construction includes an assembly-receiving aperture intermediate anterior and posterior ribbon portions. The cap assembly includes an aperture-closing construction and a light assembly. The light assembly is receivable in the assembly-receiving aperture, and the closing construction caps the assembly-receiving aperture. The light assembly provides illumination internally to the awareness ribbon construction for enabling onlookers to readily visualize the ribbon construction.

Abstract: Techniques are disclosed for transmitting electromagnetic radiation such as ultra-violet, violet, blue, blue and yellow, and/or blue and green electromagnetic radiation, from LED devices fabricated on bulk semipolar or nonpolar materials and using phosphors. The substrate may include polar gallium nitride.

Abstract: This disclosure provides systems, methods, and apparatuses for a multi-beam light engine. In one aspect, a light source is coupled with an optical film such that light emitted from the light source passes through the optical film. The optical film can be a composite film including one or more sections, each of which is configured to operate differently on the input beam emitted from the light source. The optical film can be configured to produce one or more output beams of differing color, direction, and/or beam width.

Abstract: LED based lamps and bulbs are disclosed that comprise a pedestal having a plurality of LEDs, wherein the pedestal at least partially comprises a thermally conductive material. A heat sink structure is included with the pedestal thermally coupled to the heat sink structure. A remote phosphor is arranged in relation to the LEDs so that at least some light from the LEDs passes through the remote phosphor and is converted to a different wavelength of light. Some lamp or bulb embodiments can emit a white light combination of light from the LEDs and the remote phosphor. These can include LEDs emitting blue light with the remote phosphor having a material that absorbs blue light and emits yellow or green light. A diffuser can be included to diffuse the emitting light into the desired pattern, such as omnidirectional.

Abstract: A display device for increasing brightness of an image generation, including a color cluster system, is provided. The system includes a first color LED cluster having at least a first LED of a first wavelength within a first color range and a second LED of a second different wavelength within the first color range. The light from the first LED may be combined at least partially with light from the second LED The system further comprises a second color LED cluster having at least a first LED of a first wavelength within a second color range and a second LED of a second different wavelength within the second color range. In the second color LED cluster, the light from the first LED may be combined at least partially with light from the second LED.

Abstract: A layered dimmer formed of different layers. The front layer may be a scattering layer, and the back layer may be a reflective layer. The light beam is scattered prior to reflecting, to avoid reflection back to form hotspots.

Abstract: A hands-free filter assembly suitable for use with a loupe light is described. The hands-free filter assembly includes a filter that moves between an in-use position, where it is filtering light from the loupe light, and a non-use position, where it is not filtering light from the loupe light. The filter can be moved between the in-use position and the non-position without manual manipulation.

Abstract: A lighting device achieves power saving and a moderate illumination brightness distribution without having local dark portions. A lighting device 12 includes a light source 17, a chassis 14 and an optical member 15a. The optical member 15a includes a light source overlapping portion DA that overlaps a light source installation area LA where the light source 17 is arranged. A light reflecting portion 50 is formed on at least the light source overlapping portion DA. The optical member 50 has maximum light reflectance Rmax and minimum light reflectance Rmin, and the maximum light reflectance Rmax is 40% or higher in the light source overlapping portion DA and an entire half-value width H having light reflectance of (Rmax+Rmin)/2 occupies 25% to 80% in a transmission area TA of the optical member 15a through which the light from the light source transmits.

Abstract: Described herein is a LED PAPI having an array of light emitting diodes (LEDs), the array of LEDs comprising a first set of LEDs emitting a first color and a second set of LEDs emitting a second color. Light from the array of LEDs passes through a pair of apertures separated by a precision ground blade. The precision ground blade has a first edge that is closest to the array of LEDs and a second edge opposite the first edge. The first and second edges have different thicknesses. After passing through the apertures, the light passes through a first lens and a second lens.

Abstract: In various embodiments, a lighting device is provided. The lighting device may include an air channel, which extends in an axial direction and which has at least one first opening in the region of a first axial end of the air channel and which has at least one second opening in the region of a second axial end of the air channel; at least one radiation arrangement, which emits electromagnetic radiation and which is arranged on an outer side of the air channel such that it emits the electromagnetic radiation in a direction away from the air channel; and at least one conversion element, which comprises phosphors and which is arranged around the air channel and the radiation arrangement at a predefined distance from the radiation arrangement such that the electromagnetic radiation impinges on the conversion element and excites the phosphors in the conversion element for emitting conversion radiation.

Abstract: Techniques, devices and materials for light source devices that convert excitation light into different light via wavelength conversion materials. One example of a light source includes an excitation light source; a wavelength conversion material that absorbs light from the excitation light source and emits a longer wavelength light; and a layer of a transparent material that has plural optical structures in contact to or in close proximity to the wavelength conversion material to receive the emitted light from the wavelength conversion material and to modify the received light to produce output light with a desired spatial pattern associated with the plural optical structures.

Abstract: An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).

Abstract: A light converting device includes a wide production conversion material and a narrow production conversion material to convert the source light into a first and second interim light, respectively. The conversion materials may be included in, or applied to, an enclosure. The first and second interim light may be included in a converted light. The converted light may be included with the source light to create a white light. The wide production conversion material may have wide absorption and scatter characteristics. The narrow production conversion material may have narrow absorption and scatter characteristics to substantially reduce inefficiencies caused by double conversion of light.

Abstract: According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.

Abstract: A light source comprises a blue emitting LED operable to generate blue excitation light and a light emitting surface comprising a light transmissive substrate and a phosphor. The LED is configured to irradiate the light emitting surface with excitation light such that the phosphor emits light of a second wavelength and wherein light emitted by the source comprises a combination of blue light from the LED and the second wavelength light from the phosphor. The light emitting surface is interchangeable thereby enabling the source to generate different selected colors of light using the same LED. The phosphor can be provided as a layer on the substrate or incorporated within the light transmissive substrate. The light emitting surface can be configured as a waveguide or as a light transmissive window.

Abstract: Assemblies compliant with night vision imaging system (NVIS) standards are described. Versions of the assemblies incorporate filtering material into an encapsulant for a light-emitting diode (LED) die, avoiding any necessity of using external filtering agents. Alternatively or additionally, filtering material may be incorporated into a housing of an encapsulated LED.

Abstract: A system including a housing configured to receive a light emitted from an illumination source, a reflective filter system within the housing configured to direct a certain wavelength of the light emitted from the illumination source towards a target, and a baffle system configured to remove scattered light from the light emitted from the illumination source prior to the certain wavelength of light illuminating the target. A method and another system are also disclosed.

Abstract: A phosphor sheet having a laminated structure including a first barrier material, a first barrier material, a first color conversion layer, a second color conversion layer, and a second barrier layer and a display unit and an illuminating device including display unit is provided. A diffusion plate and a display unit including a diffusion plate are also provided.

Abstract: A luminaire including a luminaire housing and a transparent or translucent cover. The illuminants and associated electric or electronic components can be arranged in the luminaire housing and the cover is detachably connected to the luminaire housing. A filter for spectrally filtering the light emitted by the illuminants is assigned to the cover. The spectral filtering is adapted to filter light in at least a certain spectral range, in which a certain animal is more sensitive than a human being.

Abstract: A backlight unit including a light guide plate, a light source comprising a plurality of color light emitting diodes, and an optical member comprising a diffusion sheet on the light guide plate, wherein the diffusion sheet comprises a plurality of color patterns that are located outside of an area that overlaps with an active area, where each of the color light emitting diodes is positioned in an area adjacent to the color pattern of a different color, and a liquid crystal display including the same are disclosed.

Abstract: An illuminated sign includes a plurality of straight fin heat sinks framed together; a plurality of LED plates framed together, each LED plate comprising a plurality of LEDs arranged in rows on a front surface, and a plate heat sink on a rear surface, the plate heat sinks being in contact with the straight fin heat sinks; and an LCD panel mounted in front of the LED plates by framing.

Abstract: In embodiments of imaging structure color conversion, an imaging structure includes a silicon backplane with a driver pad array. An embedded light source is formed on the driver pad array in an emitter material layer, and the embedded light source emits light in a first color. A conductive material layer over the embedded light source forms a p-n junction between the emitter material layer and the conductive material layer. A color conversion layer can then convert a portion of the first color to at least a second color. Further, micro lens optics can be implemented to direct the light that is emitted through the color conversion layer.

Abstract: An illumination apparatus including a first light emitting device, a first phosphor layer, a second light emitting device and a second phosphor layer and a beam combining element is provided. The first light emitting device is capable of providing a first light beam and the first phosphor layer is disposed on the transmission path of the first light beam. The second light emitting device is disposed opposite to the first light emitting device and for providing a second light beam, wherein the second phosphor layer is disposed on the transmission path of the second light beam. The beam combining element is disposed between the first phosphor layer and the second phosphor layer. In addition, the invention also provides a projection apparatus.

Abstract: A light emitting module includes: a semiconductor light emitting element; a plate-shaped light wavelength conversion ceramic that is provided so as to face the light emitting surface of the semiconductor light emitting element and that is configured to convert the wavelength of the light, which has been emitted by the semiconductor light emitting element; and a reflective film that is formed on the surface of the light wavelength conversion ceramic and that is configured to shield part of the light, which has been transmitted through the light wavelength conversion ceramic. The light wavelength conversion ceramic is composed on an inorganic material.

Abstract: An illumination device includes a wavelength conversion material layer with a first surface, which includes a wavelength conversion material and a scattering material; a light guide device located adjacent the wavelength conversion material layer on a side facing its first surface for directing an excitation light onto the first surface of the wavelength conversion material layer, and for directing a mixed light emitted from the first surface, which includes converted light and remaining excitation light not absorbed by the wavelength conversion material layer, into a light exit port. In this illumination device, the light guide device can collect the excitation light reflected by the wavelength conversion material layer effectively, which insures that adding scattering materials into the wavelength conversion material layer doesn't have a significant impact on the luminous efficiency of the illumination device, and resolves the conflict between color uniformity and luminous efficiency of the device.

Abstract: A wavelength conversion device comprising a plurality of regions. Each region for absorbing radiant energy and emitting light having a characteristic dependent upon which region of the device emits the light.

Abstract: The invention provides a lighting device comprising a housing. The housing comprises visible-light sources (10) arranged to generate visible light (11), UV-lightsources (12) arranged to generate UV-light (13), a light exit window (14) positioned to allow transmission of the visible light (11), a photochromic layer (16) positioned upstream of the light exit window (14) and downstream of the visible light sources (10), the photochromic layer (16) comprising at least one area with UV-photochromic material (15), the UV-photochromic material (15) having a first color state and a second color state, and a control unit (40) connected to the UV-light sources (12) for controlling the UV-light sources (12), wherein the UV-light sources are arranged to illuminate the photochromic layer (16). The invention makes it possible to obtain dynamic light effects.

Abstract: A transparent sheet usable in the state where one of surfaces thereof is adjacent to a light emitting body, wherein the other surface of the sheet is divided into a plurality of tiny areas ? having such a size that a maximum circle among circles inscribed thereto has a diameter of 0.5 ?m or greater and 3 ?m or less with no gap; the tiny areas ? include a plurality of tiny areas ?1 randomly selected from the plurality of tiny areas ?, and the remaining plurality of tiny areas ?2; the tiny areas ?1 each include an area ?1a along a border with the corresponding tiny area ?2, and the remaining area ?1b; the tiny areas ?2 each include an area ?2a along a border with the corresponding tiny area ?1, and the remaining area ?2b; the height of the tiny areas ?1b is d/2; the height of the tiny areas ?1a is between zero to d/2; the depth of the tiny areas ?2a is d/2; the depth of the tiny areas ?2b is between zero to d/2; and d is in the range of 0.2 ?m or greater and 3.0 ?m or less.

Abstract: A stage light fitting for making light effects has a light source adapted to generate a light beam extending along an axis; a main optical assembly; and at least one filter for shaping the light beam; wherein the filter is arranged between the light source and the main optical assembly, is adapted to selectively intercept the light beam, and has a multi-faceted face defined by a plurality of adjacent cavities.

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 surface of a transparent substrate 5 which is adjacent to a light emitting body has a surface structure 13 that is defined by dividing the surface into a plurality of linear segments of width w which are inclined so as to extend in a specific direction in a plane of the surface and dividing the linear segments into minute regions aligned along the longitudinal direction of the linear segments such that the largest inscribed circle of the minute regions has a diameter from 0.2 ?m to 1.5 ?m. Each of the minute regions is formed by a raised or recessed portion formed in the surface of the transparent substrate 5. The proportion of the raised portions and the proportion of the recessed portions, P and 1?P, are determined such that P is in the range of 0.4 to 0.98.

Abstract: An illumination system includes a wavelength-transforming device, a solid-state light-emitting element and a filter wheel. The wavelength-transforming device comprises a segment and a wavelength-transforming element disposed on the segment. The solid-state light-emitting element emits first color light in first waveband region to the wavelength-transforming device. The filter wheel is disposed on one side of the wavelength-transforming device for filtering lights via rotating. The first color light is excited as second color light in second waveband region by the wavelength-transforming device, so that the second color light is outputted with the rest of the first color light. The first and second color lights are transmitted through the filter wheel, such that three primary color lights are sequentially projected.

Abstract: [Object] To provide an illumination apparatus capable of suppressing a chromaticity fluctuation due to a view angle and an incident angle. [Solving Means] In an illumination apparatus for a display apparatus that includes a blue-color light-emitting diode (10) as a light source and a phosphor sheet (21) including a phosphor that obtains white light by converting a color of blue light from the blue-color light-emitting diode (10), diffusion plates (22, 23) are respectively provided opposed to a light-emitting-side surface and a light-incident-side surface of the phosphor sheet (21). The diffusion plate (22) opposed to the light-emitting-side surface of the phosphor sheet (21) suppresses a fluctuation of white-color chromaticity due to a view angle, and the diffusion plate (23) opposed to the light-incident-side surface of the phosphor sheet (21) suppresses a fluctuation of white-color chromaticity due to an incident angle.

Abstract: A lighting unit emits light with an intensity in the wavelength from 430 to 510 nm that is maximum at 460 nm and minimum in the range from 490 to 500 nm, an intensity in the wavelength from 510 to 600 nm that is maximum in the range from 530 to 545 nm and minimum in the range from 570 to 580 nm, and an intensity in the wavelength of 600 nm or greater that is maximum in the range from 620 to 640. The lighting unit illuminates meat with light having a feeling of contrast index (FCI) of 135 to 145 and the illuminated meat has a metric hue angle from 54 to 56 and a color shift Duv from 0 to 5.

Abstract: A headlamp is provided, which has lower power consumption, a longer service life and a more compact size and yet is capable of easily projecting visible light and near infrared light in desired light distribution patterns. The headlamp includes a wavelength converting member and an excitation light source. The wavelength converting member includes a visible light fluorescent material which is excited by excitation light emitted from the excitation light source to emit visible light, and a near infrared fluorescent material which is excited by the excitation light emitted from the excitation light source to emit near infrared light. The visible light and the excitation light are mixed together to generate white light. The excitation light source is a semiconductor solid-state element.

Abstract: A radiation-emitting component with a semiconductor body is intended for emitting electromagnetic radiation from its front side. The component also includes a reflective optical element. This optical element is intended to direct some of the radiation emitted by the semiconductor body, which impinges directly on the reflective optical element, into an outer region of a target zone. A refractive optical element is intended to focus the reflected fraction of the radiation into the outer region of the target zone and to focus the remaining fraction of the radiation into an inner region of the target zone.

Abstract: Provided are a lens apparatus and a machine vision system including the lens apparatus. The lens apparatus includes: a first lens group and a second lens group which are designed to use a wavelength of light of a first single color as a reference wavelength and disposed on opposite sides of an aperture; and a converter lens group which is disposed at an object side of the first lens group, wherein the converter lens group performs selectively at least one of a first conversion for converting a magnification, and a second conversion for converting the reference wavelength.

Abstract: In accordance with an example embodiment of the present invention, an apparatus comprises a light source capable of illuminating a target scene and an adjustable light filter coupled with the light source, the adjustable light filter adapted to display a filter image, the filter image created to spatially filter the illumination based at least in part on at least one parameter.

Abstract: A semiconductor light emitting apparatus includes a solid-state light emitting device and a wavelength converter that converts primary light emitted by the solid-state light emitting device into secondary light at a loner-wavelength. The wavelength converter is an inorganic compact that includes a transparent wavelength conversion layer containing phosphor having a garnet crystal structure. The phosphor contains a constituent element group composed of at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Y, La, Gd, Tb, and Lu. Part of the constituent element group is substituted by Ce3+ and the amount of Ce3+ is 1 atomic % less of the entire constituent element group. As a result, a high-power and highly reliable semiconductor light emitting apparatus suitable as a point light source is provided. In addition, such a semiconductor light emitting apparatus is manufactured through a simple application of traditionally used practical technicians.

Abstract: The disclosure provides a dominant wavelength stabilized white light emitting device and a method for stabilizing dominant wavelength of a white-light light emitting device. The light emitting device includes light-emitting diode chips, a phosphor resin layer disposed above the diode chip, and an optical filter disposed above the resin with a gap interposed between the phosphor resin layer and the optical filter. The phosphor resin layer contains a phosphor that is excited by light of the first wavelengths to emit light of second wavelengths. The optical filter reflects light of wavelength shorter than the peak wavelength and transmitting light of the second wavelengths with a modulated transmittance in a range of the first wavelengths.

Abstract: A back lighting unit is disclosed in which lower and upper surfaces of a light transmitting plate function as incident and exit surfaces of light, respectively, and a phosphor film structure for wavelength-converting the light is provided at a position which the light is incident on or exits from. The disclosed back lighting unit includes a light emitting means including a light emitting diode disposed to emit light upwards; a light transmitting plate disposed over the light emitting diode, the light transmitting plate having a lower surface allowing light to be incident thereon and an upper surface allowing light to exit therefrom; and a phosphor film structure including a particulate phosphor and formed on at least one of the lower and upper surfaces of the light transmitting plate.

Abstract: A light source wavelength modulator includes a substrate made of a material with a high light transmittance and a thermal conduction effect, a wavelength modulation layer formed on the substrate and made of a wavelength modulation material, and patternized or multilayered, and further having a spacer between the wavelength modulation layer and its corresponding light source for achieving the best light source wavelength modulation, such that a portion of light spectrum of an original solar light or LED having no response or poor response to the light receiver is converted into a range of the best application efficiency for improving the utility efficiency of the light source. The white light emitted from the LED is gone through a wavelength modulation to enhance the light emitting color rendering, conversion efficiency and using life.