Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.

Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.

Abstract: A film including a resin layer comprising a structured major surface opposite a second major surface, the structured major surface including a plurality of features; a barrier layer on the structured major surface; and a first adhesive layer on the barrier layer.

Abstract: A method of manufacturing a conversion element is disclosed. A precursor material is selected from one or more of lutetium, aluminum and a rare-earth element. The precursor material is mixed with a binder and a solvent to obtain a slurry. A green body is formed from the slurry and the green body is sintered to obtain the conversion element. The sintering is performed at a temperature of more than 1720° C.

Abstract: A hazardous location light source module includes a metal base carrier having a light-module support surface on its upper side and a mounting stem on its lower side. The light-module support surface supports a light-module substrate mounting one or more light-emitting devices. The mounting stem is configured for mounting the light source module to a modular hazardous location light source assembly. A wiring port extending through the mounting stem to the base carrier upper side receives electrical wiring that connects electrically to the light-emitting device(s). A main-lens support surface on the base carrier upper side supports a light-transmitting main lens that comprises chemically strengthened glass and has a maximum dimension to maximum thickness ratio of not less than approximately 40:1. The main lens is permanently secured to the base carrier by virtue of a base carrier periphery being deformed into a lip that folds over to capture the main lens.

Abstract: A lighting apparatus includes a light source, a driver and a manual switch. The light source includes multiple LED modules. The driver includes a converter circuit and a control circuit. The converter circuit converts an external power source to a driving current supplied to the light source. The manual switch includes a socket and a plug for a user to insert the plug into the socket for selecting a working parameter. The manual switch is connected to the driver and the control circuit of the driver controls the light source according to the working parameter.

Abstract: A light guide plate having a main body with a first surface and a second surface opposite the first surface; a first transparent material layer arranged on the first surface and having a plurality of portions recessed towards the first surface, and a second transparent material layer arranged on the second surface and having a plurality of ribbed structures, the difference between the refractive indexes of both of the first and second transparent layers, and the refractive index of the main body, being less than a desired threshold.

Abstract: The process relates to the manufacture of a plurality of glazings of complex shape from a rectangular sheet of float glass of large dimensions. The process includes at a first station for cutting the glass sheet, scoring at least one cutting line corresponding to at least one ready-to-shape edge of the glazings; a first breaking operation; at a second cutting station, scoring at least one cutting line corresponding to at least one other ready-to-shape edge of the glazings, and a second breaking operation.

Abstract: A backlight unit includes a light source; a light guide plate; and an optical member on the light guide plate. The optical member includes first insulating patterns into which light from the light guide plate is incident to the optical member; a first insulating layer which covers the first insulating patterns; second insulating patterns into which light from the first insulating layer is incident; and a second insulating layer which covers the second insulating patterns. The light guide plate includes a light incident side surface, pairs of insulating patterns each include one first insulating pattern and one second insulating pattern, and in a top plan view, for each pair of insulating patterns, the first insulating pattern is closer to the light incident side surface than the second insulating pattern.

Abstract: A light shield includes a main portion and an overlap portion that is substantially perpendicular to the main portion. The main portion includes a first scored area and a base platform disposed below the first scored area. The first scored area includes a plurality of score lines that define one or more detachable panels. The overlap portion includes a second scored area and another base platform. The second scored area includes another plurality of score lines that define one or more detachable overlap panels. Further, the light shield includes a flange that extends substantially perpendicular to and along a length of a base platform of the light shield's main portion. A first interlocking arm extends from a first end of the flange and a second interlocking arm extends from a second end of the flange that is opposite to the first end.

Abstract: An illuminating device may include a light source, an optical unit configured to adjust direction of light from the light source, a reflector, a light pipe, and an exciter. The light pipe may receive light having a first wavelength from the optical unit and direct the light having the first wavelength onto the exciter. The exciter may convert the light having the first wavelength into light having the second wavelength and reflects the light having the second wavelength to the reflector. A circumferential wall of the light pipe is configured to reflect the light having the first wavelength and to transmit the light having the second wavelength.

Abstract: A light emitting device includes a light source and a light diverging unit including a first light diverging part and a second light diverging part including a bottom surface and a first light emitting surface connected by a side surface. The bottom surface defines a first receiving space for receiving the light source, the first light emitting surface defines a second receiving space communicating with the first receiving space, and the second receiving space comprises a first connecting surface. The second light diverging part is inserted into the second receiving space, and comprises a second light emitting surface and a second connecting surface. The second connecting surface fully contacts the first connecting surface, the second light emitting surface smoothly connects to the first light emitting surface. A refraction index of the first light diverging part is smaller than that of the second light diverging part.

Abstract: An energy-generating transparent (EGT) structure is provided, in addition to a method for generating energy from light incident to an EGT structure. The EGT structure is made up of a window pane with an interior surface adjacent a reflective structure. The method accepts light incident to an exterior surface of the window pane, and transmits light in the visible spectrum through the window pane and reflective structure. However, light in the near-infrared (NIR) spectrum is reflected back from the reflective structure into the window pane, so that reflected NIR, spectrum light is supplied to an edge of the window pane. For example, reflected NIR spectrum light is supplied to the window pane edge if the light has an angle greater than or equal to an angle TIR occurring between the window pane exterior surface and air. This reflected NIR spectrum light can be converted to electrical or thermal energy.

Abstract: An optical device and a detection apparatus, with which a measurement sample over a wide concentration range can be detected even if the concentration of a measurement target is relatively low are to be provided. An optical device emits a light for detecting and/or identifying a measurement sample when a light from a light source is incident thereon. This optical device includes multiple metal nanostructures formed on a dielectric body, a first organic molecular film which is formed on the dielectric body between two adjacent metal nanostructures among the multiple metal nanostructures, and a second organic molecular film which is different from the first organic molecular film and is formed on the multiple metal nanostructures. The first organic molecular film and the second organic molecular film attach (capture) a measurement sample 1.

Abstract: A light adjusting sheet includes a base and a first light adjusting structure layer. The base includes a first surface and a second surface opposite to the first surface. The first light adjusting structure layer is disposed on the first surface of the base, and the first light adjusting structure layer includes a plurality of light adjusting structures. Each light adjusting structure includes a major axis, a minor axis and a thickness, wherein the major axis of the light adjusting structure is in parallel with an extending direction. A ratio of a length of the minor axis to a length of the major axis is between 0.093 and 0.6, and the thickness is between 2 mm to 6 mm. A backlight module using the light adjusting sheet can achieve high brightness and large viewing angle.

Abstract: An improved method to produce artificial light for plant cultivation, an illumination device with a semiconductor light emission solution and device suited for plant cultivation in a greenhouse and/or dark growth chamber environment are described. The best mode is considered to be a lighting device with LEDs that produces an emission spectrum similar to the photosynthetically active radiation (PAR) spectrum in a dark growth chamber. The methods and arrangements allow more precise spectral tuning of the emission spectrum for lights used in plant (310, 311) cultivation. Therefore unexpected improvements in the photomorphogenetic control of plant growth, and further improvements in plant production, especially in dark growth chambers, such as basements, are realized.

Abstract: A lighting device for emitting light in selective directions including a light source structure member, a plurality of lighting devices attached to the light source structure member, a controller, a power supply, and an optic carried by the light source structure member and including a plurality of facets. Each light source of the plurality of light sources may be positioned such that light emitted thereby is emitted through a facet of the plurality of facets of the first optic. Each facet of the plurality of facets may be configured to redirect light in a direction that is unique from the other facets of the plurality of facets. Additionally, the controller may be configured to selectively operate each light source of the plurality of light sources. Multiple pairs, or combinations, of light source structure members and optics may be included.

Abstract: A lighting apparatus includes a wavelength converting apparatus. The wavelength converting apparatus includes a hollow tube and a wavelength converting material. The hollow tube has an accommodating chamber. The wavelength converting material is positioned in the accommodating chamber.

Abstract: A lighting component having an optic is provided. The optic includes a body formed from a plurality of partial elliptical bodies. Each partial elliptical body is substantially elliptical about a source focal point and a common focal point. Each source focal point for the partial elliptical bodies is disparately located and each common focal point for the plurality of partial elliptical bodies is collocated. The body of the optic has a common outlet proximate the common focal point and a plurality of source inlets where each source inlet of the plurality of source inlets is proximate the source focal point for a corresponding one of the plurality of partial elliptical tubes.

Abstract: A light conversion assembly 100, a lamp and a luminaire is provided. The light conversion assembly 100 comprises a first layer 108 and a second layer 106. The first layer 108 comprises first luminescent material. The first luminescent material comprises particles showing quantum confinement and have at least in one dimension a size in the nanometer range. The first layer is arranged to receive light 110 from a light source emitting light of a first spectral distribution in a violet or blue spectral range. The first spectral distribution has a first peak wavelength. The first layer 108 is configured to convert substantially all the received light 110 towards light 104 of a second spectral distribution in the blue spectral range, independently of the position of first spectral distribution in the violet or blue spectral range. The second spectral distribution has a second peak wavelength which is a longer wavelength than the first peak wavelength. The second layer 106 comprises a second luminescent material.

Abstract: Disclosed is a phosphor wheel including a substrate, a first phosphor region on the substrate, and a second phosphor region on the substrate. The first phosphor region and the second phosphor region are concentric patterns without any space between their interface. Moreover, the second phosphor region is set to around the first phosphor region.

Abstract: A light guide plate configured to guide light which is incident on an incidence surface of a plate-shaped member so as to be emitted from an emission surface includes: a light amount adjusting unit configured to adjust the amount of light emitted from an excessive light amount region of the emission surface, wherein the light amount adjusting unit is provided on one of the incidence surface and the emission surface, corresponding to the excessive light amount region.

Abstract: A method 200 of manufacturing a (part of) color ring is provided. The color ring converts a color of light emitted by a light emitter into at least one other color. The method (200) comprising the steps of: i) pressing (102) a first ring body of a first granulated precursor comprising a first luminescent material for converting the color of the light of the light emitter into a first one of the at least one other color, and ii) sintering (104) the first ring body for obtaining a first ceramic ring. The color ring comprises at least a segment of the first ceramic ring.

Abstract: Light modules for converting the wavelength of light are described herein along with methods for using and making such modules and devices incorporating such modules.

Abstract: There is provided a luminescent light emitting device including a mirror layer, a luminescent material plate that is formed on one surface side of the mirror layer, and a conductive thin wire film in which a conductive thin wire is disposed and that lies on the other surface side of the mirror layer, in that luminescent light that is emitted by the luminescent material plate is emitted to the front that is one surface side of the luminescent material plate by the mirror layer, and damage done to the luminescent material plate is detected by a disconnection of the conductive thin wire.

Abstract: An alumina-based ceramic wavelength converter is described having a surface layer containing a second phase of alumina, preferably as alumina crystallites. The surface layer is formed as a result of the sintering process used to form the bulk ceramic which is itself substantially transparent. The ceramic wavelength converter is combined with a light emitting diode to form a light emitting device. Preferably, the ceramic wavelength converter is comprised of an alumina-based phosphor represented by a general formula A3B5O12:Ce, wherein A is Y, Sc, La, Gd, Lu, or Tb and B is Al, Ga or Sc.

Abstract: Thin film wavelength converters and methods for making the same are disclosed. In some embodiments, the thin film converters include a first thin film layer of first wavelength conversion material, a conductive layer, and a second thin film layer of a second wavelength conversion material. In one embodiment, a photoresist mask is applied to the conductive layer to form a pattern of by which the second wavelength conversion material may be applied by electrophoretic deposition to the exposed regions of the surface of the conductive layer.

Abstract: Provided is a diffuser for a backlight and display device having the same. The display device may include a case, a display screen provided in the case, and a backlight provided behind the display screen. The backlight may include a first light panel, a second light panel provided adjacent the first light panel, and a diffuser provided over a boundary between the first and second light panels to diffuse light between the first and second light panels. The diffuser may have light blocking regions arranged in a prescribed pattern to diffuse the light.

Abstract: An optical converter for producing colored or white light from blue excitation light is provided. The converter has good scattering properties to be able to produce nearly white light from the scattered blue light components and the scattered, converted yellow light components. The optical converter includes material including one or more of a YAG ceramic, a LuAG ceramic, and a magnesium-aluminum ceramic exhibiting strong scattering.

Abstract: Implementations disclosed herein include optical sheets comprising one or more regions including one or more optical elements. Each of the one or more optical elements includes a plurality of microstructures. The one or more optical elements can be configured to tailor the radiation pattern output from a source of illumination. The one or more optical element can be further configured to impart a visual appearance to the optical sheet that is different from a standard lenticular or prismatic sheet. In various implementations, the one or more regions can be demarcated from each other or the surrounding by borders. The borders of the one or more regions can be configured to form one or more letters, one or more symbols or logos for identification and/or security purposes. Various implementations of the optical sheet can include nano-particles in addition to the optical elements to enhance the aesthetic quality of the optical film.

Abstract: A wavelength conversion structure for a light source including a solid-state light-emitting device. The wavelength conversion structure includes one or more apertures formed therein. The apertures may permit color steering of the light downstream of the conversion structure without a substantial reduction in the output of secondary light produced during a conversion process.

Abstract: In an optical substrate (1), a concave-convex structure (12) including a plurality of independent convex portions (131 to 134) and concave portions (14) provided between the convex portions (131 to 134) is provided in a surface. The average interval Pave between the adjacent convex portions (131 to 134) in the concave-convex structure (12) satisfies 50 nm?Pave?1500 nm, and the convex portion (133) having a convex portion height hn satisfying 0.6 h?hn?0 h for the average convex portion height Have is present with a probability Z satisfying 1/10000?Z?1/5. When the optical substrate (1) is used in a semiconductor light-emitting element, dislocations in a semiconductor layer are dispersed to reduce the dislocation density, and thus internal quantum efficiency IQE is improved, and a waveguide mode is removed by light scattering and thus the light the extraction efficiency LEE is increased, with the result that the efficiency of light emission of the semiconductor light-emitting element is enhanced.

Abstract: The present invention discloses a light redirecting film. The light redirecting film comprises a support substrate and an optical substrate. The support substrate comprises a unitary body, wherein the unitary body has a first surface and a second surface opposite to the first surface. The optical substrate has a third surface and a fourth surface opposite to the third surface, wherein the fourth surface is a structured surface, and the second surface of the unitary body faces the third surface of the optical substrate. A plurality of particles are disposed in a region below the first surface of the unitary body, wherein the thickness of the region is smaller than the thickness of the unitary body.

Abstract: Certain example implementations of the disclosed technology include a light emitting device. The light emitting device may include an enclosure with four sides and a top edge surface associated with each of the four sides. The enclosure may be capable of mounting on a grid frame of a suspended ceiling such that a portion of the top edge surfaces contacts a portion of the grid frame. The light emitting device may further include a light modifying element characterized by a substrate with four or more edges, a back surface disposed on the top edge surface of each of the four sides of the enclosure, and a front surface. In certain example embodiments the substrate may further comprise two or more edge trusses. A periphery of the light-emitting front surface may be capable of contacting the grid frame after the light emitting device is mounted to the grid frame.

Abstract: Disclosed are an optical device, an optical element, and an image display device that can achieve an improved absorption efficiency of excitation light. The optical device includes: a light-emitting element; a carrier generation layer on which light from the light-emitting element is incident and in which carriers are generated; a plasmon excitation layer that excites a plasmon, stacked on the upper side of the carrier generation layer and has a plasma frequency higher than a frequency of light generated when the carrier generation layer is excited by the light from the light-emitting element; and an exit layer that converts light or a surface plasmon generated on a surface of the plasmon excitation layer into light having a predetermined exit angle and from which the light having the predetermined exit angle exits. The optical device further includes a polarization conversion layer on the lower side of the carrier generation layer.

Abstract: A light mixing chamber includes a housing having a channel formed therein, with the channel exposed to an exterior of the housing. A chamber is formed in the housing, and an aperture formed in the housing connects the chamber to the channel. The chamber may house an LED, with an optical member being retained within the channel. A light guide plate may be positioned on an exterior of the housing outside the channel.

Abstract: A phosphor device of an illumination system is provided. The illumination system emits a first waveband light and has an optical path. The phosphor device includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. After the first waveband light is received by the first phosphor agent, the first waveband light is converted into a third waveband light, and the third waveband light is directed to the optical path, so that the third waveband light is separated into at least two color lights along the optical path.

Abstract: A phosphor body (1) for converting pump light into converted light, the extent of said phosphor body being greater in a direction of extent (3) than in a direction perpendicular thereto, and which phosphor body is adapted to emit converted light in the direction of extent (3) as a result of illumination with pump light. The phosphor body (1) comprises at least two phosphor body subvolumes (2a,b,c,d), which are configured in such a way that the converted light emitted in each case by said phosphor body subvolumes differs in terms of the spectral properties. The phosphor body subvolumes are arranged successively in a direction oriented perpendicular to the direction of extent.

Abstract: A wavelength conversion element includes a phosphor layer including phosphor particles configured to be excited by light from a light source and a matrix located among the phosphor particles; and a column-shaped structural body including at least two kinds of column-shaped bodies periodically arranged and in contact with the phosphor layer. The column-shaped bodies have different heights and/or different thicknesses. The column-shaped structural body is a photonic crystal.

Abstract: Discussed are a light guide plate and an apparatus and method for manufacturing the same. The light guide plate manufacturing apparatus includes a stage supporting a substrate for manufacturing the light guide plate, a screen disposed on the substrate supported by the stage, an applying part applying an etching ink onto the screen, and a squeegee pressurizing the screen with the etching ink applied thereon to form a pattern corresponding to a screen pattern in the substrate. The screen pattern corresponding to the pattern to be formed in the substrate is formed in the screen. The etching ink is used for etching the substrate to form the pattern in the substrate. The light guide plate can prevent loss of light due to the pattern, and enhance efficiency of light (emitted from a light source) supplied to a display panel.

Abstract: To provide a substrate for optics for enabling the color shift caused by diffraction of light to be reduced, a substrate for optics (12) is provided with a fine-structure layer including dots (31) comprised of a plurality of convex portions or concave portions extending in the direction of from a main surface of a substrate to outside the surface, the fine-structure layer has a plurality of dot lines in which a plurality of dots is arranged with a pitch (Py) in the first direction inside the main surface of the substrate, while having a plurality of dot lines in which a plurality of dots is arranged with a pitch (Px) in the second direction orthogonal to the first direction inside the main surface of the substrate, and both of the pitch Py and the pitch Px are inconstant intervals and are of nano-order.

Abstract: A light extraction substrate which can realize a superior light extraction efficiency when applied to an organic light-emitting device, and an organic light-emitting device having the same. The light extraction substrate includes a base substrate and a matrix layer. One surface of the matrix layer adjoins to the base substrate, and the other surface of the matrix layer adjoins to an organic light-emitting diode. The light extraction substrate also includes a rod array disposed inside the matrix layer. The rod array includes at least one rod which is arranged in a direction normal to the one surface of the matrix layer. The rod array and a cathode of the organic light-emitting diode form an antenna structure which guides light generated from the organic light-emitting diode to be emitted in the normal direction.

Abstract: A computer implemented method for determining shape from differential motion with unknown reflectance includes deriving a general relation that relates spatial and temporal image derivatives to bidirectional reflectance distribution function BRDF derivatives, responsive to 3D points and relative camera poses from images and feature tracks of an object in motion under colocated and unknown directional light conditions, employing a rank deficiency in image sequences from the deriving for shape determinations, under predetermined multiple camera and lighting conditions, to eliminate BDRF terms; and recovering a surface depth for determining a shape of the object.

Abstract: A bulb structure and a light guide lamp cover thereof are provided. The bulb structure comprises a light source and a lamp body. The light source includes a circuit board and a plurality of light emitting elements disposed on the circuit board. The lamp body includes a light guide lamp cover disposed above the light source. The light guide lamp cover includes a light guide element and a holder. The light guide element covers a peripheral surface of the holder. The light guide element is moveably connected onto the holder through a fastening element and can move relative to the holder.

Abstract: A traffic signal system with dual light sources includes a signal displaying module, an ambient light module and a supplementary light module. The ambient light from environment is assembled by the ambient light module for generating a first light beam. A second light beam is provided by the supplementary light module disposed near the ground for easy maintaining and avoiding danger. The supplementary light module includes a sensor and a control circuit. The sensor senses the brightness of the first light beam passing through the signal displaying module and generates a photosensitive signal. The brightness of the second light beam is regulated by the control circuit according to the photosensitive signal. The brightness of the first light beam is supplied by regulating the brightness of the second light beam, so the signal displaying module has high-brightness light source and achieves the energy conservation.

Abstract: The present invention is an articulating hand power tool which in one embodiment includes a head portion including a head housing configured to articulate with a main housing, a bit holder rotatably positioned within the head housing, and a lighting assembly configured to emit a first elongated beam pattern from the head portion.

Abstract: A phosphor device of an illumination system emitting a first color light in a first waveband region includes a first region having n sub-regions and n single-powder phosphor agents, wherein n is ?2. The n single-powder phosphor agents are coated on the n sub-regions, respectively, for transforming the first color light in the first waveband region into n color lights in n waveband regions. The n sub-regions are arranged in a specific area ratio. The first color light in the first waveband region is cyclically transformed into a second color light in a second waveband region, a third color light in a third waveband region, . . . , and a (n+1)th color light in a (n+1)th waveband region in a specific time ratio according to the specific area ratio, such that the n color lights sequentially outputted in the specific time ratio are integrated as a specific color light.

Abstract: A display panel can display images or information on at least one surface side and transmit external light through a transmissive display element. The display panel includes a plurality of light-emitting elements that emit light to the one surface side and can be driven independently and a plurality of transmissive display elements that can be driven independently. Alternatively, a display panel transmits external light through a double-side light-emitting element and a transmissive display element. The display panel includes a plurality of double-side light-emitting elements that can be driven independently and a plurality of transmissive display elements that can be driven independently.

Abstract: A photoluminescent guide for an emergency lighting system includes a housing having a first end, a second end opposite the first end, and a longitudinal slot extending between the first end and the second end. A one-piece composite insert is disposed within the longitudinal slot. The one-piece composite insert includes a photoluminescent layer and a light-transmitting layer integrally secured to the photoluminescent layer. The one-piece composite insert is configured to receive light at the photoluminescent layer through the light-transmitting layer and to emit light from the photoluminescent layer through the light-transmitting layer.

Abstract: A lighting component having an optic is provided. The optic includes a body formed from a plurality of partial elliptical bodies. Each partial elliptical body is substantially elliptical about a source focal point and a common focal point. Each source focal point for the partial elliptical bodies is disparately located and each common focal point for the plurality of partial elliptical bodies is collocated. The body of the optic has a common outlet proximate the common focal point and a plurality of source inlets where each source inlet of the plurality of source inlets is proximate the source focal point for a corresponding one of the plurality of partial elliptical tubes.