Abstract: A planar illumination device includes a light source unit, including a substantially planar emitting surface, configured to emit light to illuminate a substantially planar object, and a frame, formed in a frame shape enclosing the light source unit, disposed on an outer circumferential side of the light source unit, configured to hold the light source unit. The frame includes a reflecting part configured to reflect the light, and an absorbing part, formed integral with at least a part of an outer circumferential surface of the reflecting part, configured to absorb the light. The reflecting part and the absorbing part include joint interface therebetween that is inclined to a direction vertical to the emitting surface.

Abstract: A light assembly that includes an elongated housing, a reflective parabolic cylindrical surface within the elongated housing having a focal line and an elongated cover coupled to the elongated housing. The light assembly also includes a plurality of light sources spaced apart longitudinally and emitting light toward the parabolic cylindrical surface. The parabolic cylindrical surface reflects light from the light sources out of the housing through the cover.

Abstract: An illumination module includes a color conversion cavity with a first interior surface having a first wavelength converting material and a second interior surface having a second wavelength converting material. A first LED is configured to receive a first current and to emit light that preferentially illuminates the first interior surface. A second LED is configured to receive a second current and emit light that preferentially illuminates the second interior surface. The first current and the second current are selectable to achieve a range of correlated color temperature (CCT) of light output by the LED based illumination device.

Abstract: A light-emitting device combining a first luminous flux control member having a total reflection surface and emitting light from an emission surface in a narrow angle range centered mainly on an optical axis, and a second luminous flux control member arranged to surround the total reflection surface of the first luminous flux control member. The second luminous flux control member (102) of the light-emitting device is provided with a second incidence surface (126a) and a second emitting surface (126b). Of the light emitted from the light-emitting element (200), the light incident to the second incidence surface (126a) is within a range of angles ? larger than a largest angle to the optical axis of the light incident to the first luminous flux control member (101).

Abstract: Disclosed are a light emitting device and a lighting apparatus having the same. The light emitting device includes a plurality of lead frames, a first body having reflectance, disposed on top surfaces of the lead frames and having an open region at a predetermined region of the top surfaces of the lead frames, a second body having transmittance, having a first opening corresponding to the open region of the first body, and disposed on a top surface of the first body, a light emitting chip on at least one of the lead frames exposed in the first opening of the second body, and a first resin layer disposed in the first opening of the second body to cover the light emitting chip.

Abstract: This disclosure discloses an illumination apparatus. The illumination apparatus comprises an inner cover comprising a top surface having a first length; a pedestal on which the inner cover is disposed comprising a top surface having a second length; and a holder supporting the pedestal; wherein the first length is greater than the second length.

Abstract: A lighting device to receive solar light by a color conversion optic and convert the solar light into a powering light, increasing the efficiency of electrical power generation using a photovoltaic system. The electrical power may be stored by a battery, from which it may be drawn to drive a lighting element to emit illuminating light. The illuminating light may be received and converted by the color conversion optic into a converted light, providing illumination in a desired wavelength range. The color conversion optic may be positionable adjacent to the photovoltaic system or the lighting element to convert light. A controller may be included to control the color conversion operation. The controller may be connected to a sensor or a timer.

Abstract: A light emitting device includes a substrate; a light emitting element disposed on the substrate; and a wavelength conversion member disposed on or above the substrate, the wavelength conversion member covering the light emitting element spacing apart therefrom, and having a level difference at an outer peripheral portion of a lower end of the wavelength conversion member, the lower end being joined to the substrate via a light transmitting member. In addition, the light emitting device includes a light blocking member disposed on the substrate and disposed between the light emitting element and the light transmitting member. Further, the wavelength conversion member is configured so that the lower end thereof extends from a top of the light transmitting member to a side of the light transmitting member.

Abstract: one spectrum correction filter that changes a spectral characteristic of emission light from the light source, at least one neutral density filter disposed on the same optical axis of the spectrum correction filter, wherein the at least one spectrum correction filter and/or the at least one neutral density filter is tilted so that a travel direction of reflection light reflected from the at least one spectrum correction filter is deviated from the optical axis.

Abstract: A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength-conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region.

Abstract: High lumen output and brightness illumination modules using an excitation light source and wavelength conversion part with multi-channel heat dissipation are disclosed. The exciting light source is a light emitting diode or a laser diode emitting in the UV and/or blue region. The luminescent material in the wavelength conversion part absorbs the excitation light and emit longer wavelength light. The enhancement approaches for brightness and polarization is disclosed.

Abstract: A light source system comprising an illumination component, a color wheel and a light uniformization module is provided. The illumination component is disposed on a first axis to provide light beams. The color wheel defines a second axis to rotate thereabout, wherein the second axis is deflected from the first axis by an angle. The light beams provided from the illumination component are substantially focused at the first axis and onto the color wheel. The light uniformization module is disposed on the first axis after the color wheel to receive a portion of the light beams and uniformize the light beams to travel along the first axis.

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 light combination device includes a reflective element and a first color separating element. The reflective element guides first color light beams emitted from at least a first light source and a second light source to propagate in a first direction. The first light source and the second light source are differently positioned in a space. The first color separating element transmits the first color light beams and reflects second color light beams emitted from at least a third light source and a fourth light source. The third light source and the fourth light source are differently positioned in the space. The first color separating element has a coating curved surface, and a curvature of the coating curved surface is varied according to positions of the third light source and the fourth light source to guide the second color light beams to propagate in the first direction.

Abstract: An image generating device includes a light source, a light filtering element, a light conversion element, and an image generating element. The light source is for generating visible light. The light filtering element is disposed on a light path of the visible light. The light filtering element includes a plurality of light filtering blocks, and each of the light filtering blocks is for allowing light with wavelength within a predetermined range to pass through. The light conversion element is disposed on the light path. The light conversion element includes a first quantum dot layer for converting light with wavelength below a first wavelength to light with the first wavelength. The image generating element is for generating images according to light passed through the light filtering element and the light conversion element.

Abstract: A stage lighting fixture has a casing having a closed first end and an open second end; a light source housed inside the casing, close to the first end, to emit a light beam along an optical axis oriented longitudinally with respect to the casing; an objective optical system located along the optical axis, at the second end of the casing, and having a focus position; a circular-aperture diaphragm located along the optical axis, between the light source and the objective optical system, to intercept the beam; and an iris diaphragm located along the optical axis, between the light source and the objective optical system, and which can be set to the focus position.

Abstract: The present invention relates to a LED module which converts pump light from a LED chip (120) to light at another wavelength, which is emitted from the module. The conversion takes place in a portion of a luminescent material (124). The color purity of the LED module is enhanced by reducing any leakage of pump light using a reflector in combination with an absorber. In one embodiment, the absorber is integrated as one or several thin absorbing layers between the layers of a multi-layer reflection filter (126); this may yield an even higher reduction of pump light leakage from the module.

Abstract: An apparatus and a method for producing a pre-tilt angle in a liquid crystal panel are disclosed. The apparatus includes a sample stage for placing the liquid crystal panel, at least one ultraviolet (UV) light source for irradiating the liquid crystal panel so that a filler material in a liquid crystal layer rotated to a preset angle can be cured to form a pre-tilt angle, and A UV filtering sheet transmissive to UV rays with wavelengths of 320 nm to 380 nm disposed between the sample stage and the UV light source. By disposing the UV filtering sheet, the filler material in the liquid crystal layer can be quickly cured and a desirable pre-tilt angle can be formed. This shortens the time of UV irradiation, improves the efficiency of producing a pre-tilt angle in the liquid crystal panel and lowers the manufacturing cost of the liquid crystal panel.

Abstract: A display device comprising a light source and having an optical waveguide, a louver, an anisotropic scattering sheet, and a transmissive liquid crystal panel disposed along the path of light emitted from the light source. The light-restricting direction of the louver is tilted at an angle ? from the Y-axis direction. The value of the angle ? is set so that the arrangement direction of moiré created between the louver and the liquid crystal panel approaches the X-axis direction. A plurality of belt-shaped convex portions extending in the Y-axis direction are formed on the surface of the anisotropic scattering sheet, and are configured so that the scattering direction of the light has anisotropy. Specifically, scattering in the X-axis direction is increased, and scattering in the Y-axis direction is reduced. Moiré can thereby be reduced in a display device having increased directivity of the display.

Abstract: An optical assembly includes a light source and an optical element. The light source generates light where the color of the light varies based on the direction the light is emitted from the light source. The optical element is positioned transverse to the optical axis and is configured to mix the light. The color of the light mixed by the optical element is substantially independent of the direction at which the light emanates from the optical element.

Abstract: A light source device includes: a first light source configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller configured to control driving timing for turning on and off each of the first light source and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light.

Abstract: A color filter preventing the occurrence of cross-talk between colors while improving light extraction efficiency, a method of manufacturing the color filter, and a light-emitting device are provided. The color filter includes: a plurality of color filter layers for a plurality of colors arranged on a substrate, a plurality of projections arranged in contact with the color filter layers, the projections of which parts on a side closer to the color filter layers are connected to one another; and a reflecting mirror film formed so as to be laid over a side surface of each of the plurality of projections.

Abstract: A lighting apparatus according to an exemplary embodiment includes a light source including a light emitting element, a reflection portion main body that is formed of an incombustible resin and is provided at an emission side of the light source, and a reflection layer that is formed of resin substantially not containing halogen or phosphorus and is provided on a surface of the reflection portion main body.

Abstract: A first device is provided. The first device may include a first light source comprising one or more organic light emitting devices and a gobo that is optically coupled to the first light source. The gobo may allow differential transmission of light emitted by different parts of the first light source so as to create a fixed variation in the light emitted by the first device.

Abstract: An improved filter wheel is disclosed, through embodiments, that comprises a plurality of reflector support structures formed as a unitized structure with a circular base member. In some embodiments, the filter wheel further comprises a plurality of light sources mounted on the filter wheel.

Abstract: A headlamp in an automobile, which is rotatable about a yaw axis when negotiating a bend, has a controller for controlling the rotary movement. In order to improve the illumination of a roadway lying in front of an automobile, the controller may take into account a driving profile.

Abstract: An electronic device capable of displaying a light pattern in a section of a surface by turning on a light source includes: the light source; a first light-transmissive colored layer provided on the surface and having reflectance and transmittance that peak in a wavelength range of light of a first color; and a second light-transmissive colored layer provided on a path of light that is emitted from the light source and reaches the first light-transmissive colored layer, the second light-transmissive colored layer having transmittance that peaks in a wavelength range of light of a second color different from the first color. The second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source reaches when the light source is turned on.

Abstract: A laryngoscope adaptor cap for use with existing government issue military flashlights designed for use in night time battlefield conditions. A filter disc filters out visible light and a light seal design prevents leakage of visible light from an assembled laryngoscope. The adaptor cap is crush resistant, impact resistant, has a high melting temperature, is disposable and allows the attachment of conventional laryngoscope paddles. It allows for night time endotracheal intubation in conjunction with military issue night vision goggles in the absence of visible light.

Abstract: A lighting device (100, 200, 300, 400) is disclosed. The device comprises a plurality of light sources (111, 119, 120, 211, 219, 220) providing light in different wavelengths, a collimating means (104, 204) having a receiving end (103, 203, 407) and an output end (114, 214, 409), wherein said light sources are arranged at said receiving end. The collimating means comprises a set of wavelength selective filters (109, 110, 115, 116, 117, 118, 215, 217) arranged as sub-collimators (106, 107, 108, 206, 207, 208) to each of said plurality of light sources such that, for each light source, said sub-collimator collimates the light from its light source, and said wavelength selective filter of said each light source is translucent for light from adjacent light sources of different wavelength, wherein said wavelength selective filters are high pass or low pass filters.

Abstract: In a time-multiplexed structured (coded) light camera, the coded light patterns are formed by means of an array of laser sources, and binarizations of the light patterns are performed by computing the dark and bright frames from the code patterns themselves.

Abstract: A window substrate for a display device includes a base substrate including a display region and a non-display region disposed adjacent to at least one portion of the display region, a light shielding layer on the base substrate and facing at least one portion of the non-display region, the light shielding layer having at least one opening, and a filter layer on the base substrate and facing the opening, the filter layer being adapted to transmit a portion of a light passing through the opening.

Abstract: Optical interference multilayer coatings of alternating first layers and second layers are provided. The first layers comprise alumina and have a refractive index that is about 1.38 to about 1.55 at 550 nm, while the second layers having a higher refractive index than the first layers. The first layers may be formed via chemical vapor deposition from an alumina precursor. Lamps comprising a light source and a light-transmissive envelope having a surface and at least partially enclosing the light source are also provided. At least a portion of the surface of the light-transmissive envelope is provided with an optical interference multilayer coating. Methods of forming an optical interference multilayer coating are also provided via chemical vapor deposition from an alumina precursor.

Abstract: A lighting device (100, 200, 300, 400) is disclosed. The device comprises a plurality of light sources (111, 119, 120, 211, 219, 220) providing light in different wavelengths, a collimating means (104, 204) having a receiving end (103, 203, 407) and an output end (114, 214, 409), wherein said light sources are arranged at said receiving end.

Abstract: The invention relates to a lighting arrangement (1) for illuminating an area under mesopic conditions. The lighting arrangement has one or more LEDs (6) emitting substantially monochromatic light in a first wavelength region. The lighting arrangement further has one or more LEDs emitting (8) substantially-monochromatic light in a second wavelength region. Aforementioned combination of LEDs is such that, in use, the light provided by the lighting arrangement has an S/P-ratio greater than 2.

Abstract: A light emitting device that has excellent color rendering performance is provided. The light emitting device comprises, a light emitting element, a red phosphor formed from a nitride phosphor that emits light when excited by the light from the light emitting element, a green phosphor formed from a halosilicate that emits light when excited by the light from the light emitting element and a YAG phosphor emitting light when excited by the light from the light emitting element.

Abstract: A tunable light source for interrogating at least one resonant waveguide grating (RWG) biosensor having a resonance linewidth. The tunable light source includes a broadband light source that emits a light beam having a first spectral bandwidth greater than the RWG biosensor resonance linewidth. The broadband light source may be substantially spatially incoherent. A tunable optical filter having a tunable spectral linewidth is arranged to receive and filter the light beam to cause the light beam to have a second spectral bandwidth substantially the same as the RWG biosensor resonance linewidth. Label-independent optical readers that employ the tunable light source are also disclosed.

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: Provided is a light projection structure (10), including: a reflective member (11) including a reflective surface (11a), the reflective surface (11a) being formed as a concave surface having a focal point (f) positioned near its apex (t); and a light emitting member (12) disposed at the focal point (f) and its vicinity, for emitting light when excited by excitation light.

Abstract: A light emitting unit may include a housing having a bottom portion parallel to an xz plane and an opened top opposite to the bottom portion, a light emitting chip on the bottom portion and generating light, and a lens which overlaps the opened top of the housing. The lens may have a convex structure with respect to the xz plane when viewed from a cross section parallel to an xy plane and a concave structure with respect to the xz plane when viewed from a cross section parallel to a yz plane.

Abstract: According to one embodiment, an optical element is provided with a paraelectric crystal, first and second pressers between which the paraelectric crystal is sandwiched, and fasteners. The paraelectric crystal has a periodic structure in which polarities are periodically inverted along a polarity period direction. The fasteners fix the first and second pressers to each other so that a predetermined pressure is applied in a direction intersecting with the polarity period direction, to the paraelectric crystal through the first and second pressers.

Abstract: In a head lamp 1, relative positions of a laser light guide path in a tapered light guide section 20 and a parabolic mirror 5 are fixed. An optical fiber 10 and the tapered light guide section 20 are each provided so as to have a receiving end part where laser light is received and an emitting end part where laser light is emitted. The emitting end part of the optical fiber 10 is located near the receiving end part of the tapered light guide section 20.

Abstract: An aperture adjusting device for adjusting an aperture through which light is transmitted. The aperture adjusting device includes: a chamber; a first fluid and a second fluid disposed within the chamber. The first fluid and second fluid are not mixed with each other. The first fluid transmits light and the second fluid blocks or absorbs light. A first electrode unit is disposed on an inner surface of the chamber, and includes one or more electrodes to which a voltage may be applied to form an electric field in the chamber. An aperture within the chamber through which light is transmitted is adjustable by adjusting an interfacial location between the first fluid and the second fluid by modifying the electric field.

Abstract: A projector comprises a light source unit 63, a display device, a cooling fan, a light source side optical system for guiding light from the light source unit 63 to the display device, a projection side optical system for projecting an image emitted from the display device on to a screen, and a projector control unit for controlling the light source unit 63 and the display device. In addition, this light source unit 63 has a plurality of fan-shaped segment areas on a circular transparent base material 130 which can be controlled to rotate, layers 131 of different phosphors which emit light of predetermined wavelength bands by receiving excitation light being disposed on at least two of the segment areas on the transparent base material 130, and comprises an excitation light source 72 which shines excitation light within a visible light wavelength band on to the phosphors.

Abstract: A vehicle light and a road illumination device can include a semiconductor light emitting device capable of forming a luminance distribution where the light with a maximum value can be arranged at or near a light distribution cutoff line, thereby improving its light utilization efficiency. The vehicle light can include a semiconductor light emitting device including a semiconductor light emitting element and a wavelength conversion layer having a thickness-decreased portion that is formed substantially at a center line of the semiconductor light emitting element and extending to one end thereof so that the thickness is reduced from the center portion toward the one end. A projection optical system for forming a cutoff line can be configured to project a plurality of light source images each including an image portion corresponding to the thickness-decreased portion at its upper area, and to arrange the image portions in at least one of a horizontal direction and an oblique direction.

Abstract: A blue LED 18 that is a semiconductor light-emitting device and that emits blue light as primary light having a peak wavelength in a visible region and a phosphor plate 30 that is a wavelength converter and that converts a portion of the blue light emitted from the blue LED 18 into yellow light as secondary light having a longer peak wavelength in the visible region than the peak wavelength and emits the yellow light in combination with a remainder of the blue light left unconverted. The phosphor plate 30 includes (a) a main body 39 extending across a light-emission path of the blue LED 18 and (b) a light-emitting part 42 composed of a plurality of columnar protrusions 44 on a part of the main body 39 in a direction in which the light exits.

Abstract: A projection type image display device using, in a projection optical system thereof, a flat mirror, which is easy to design and manufacture, as a projection mirror is provided. The projection optical system is a diagonal projection optical system and includes plural lenses. Among the plural lenses, the one disposed closest to the flat mirror has an effective area, along the vertical direction of an image, through which a light beam passes and which is off an optical axis of the other plurality of lenses, shared by the most lenses so as not to allow light reflected from the projection mirror to return to the projector body. A polarization converter using, for example, a quarter wavelength plate is provided at an output surface of a crossed prism to decrease reflectance differences between differently colored light and to thereby prevent the occurrence of color unevenness.

Abstract: A bulb-type lighting source employs a light-emitting element in a structure that facilitates heat dispersal. The lighting source includes a first heat sink member mounted in a bowl shaped case supporting a power supply circuit. A mounting substrate is positioned in surface contact with a surface of the heat sink member and is capable of supporting a light-emitting unit. A globe covers the light-emitting unit to permit light emission. A second heat sink member has a surface in contact with a perimeter of the mounting substrate and offset from the light-emitting unit to provide a second part in surface contact with the first heat member to facilitate the release of heat.

Abstract: In one embodiment, an illuminator configured to emit light into an optical fiber includes at least one pump light source configured to emit short-wavelength light. The illuminator further includes a white phosphor disposed to receive the short-wavelength light and to emit white light in response. The illuminator also includes a light collector configured to collect the short-wavelength light at the white phosphor such that a brightness of the white light is greater than a brightness of the short-wavelength light.

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 display device includes a light-emitting module and a color filter. The color filter transmits light provided from the light-emitting module and represents a color green which has a y-coordinate between about 0.565 and about 0.578 in CIE 1931 chromaticity diagram.