Including Selected Wavelength Modifier (e.g., Filter) Patents (Class 362/293)
  • Publication number: 20150029723
    Abstract: The disclosure provides a light-emitting diode (LED) package structure, including: a lead frame; at least two light-emitting diode chips having different light-emitting wavelengths disposed on the lead frame; an encapsulant disposed over the lead frame and covering the light-emitting diode chips, wherein the encapsulant has a first concave portion; and an optical glue disposed in the first concave portion, wherein the optical glue has a plurality of scattering particles to uniformly mix the lights of different wavelengths emitted by the light-emitting diode chips.
    Type: Application
    Filed: April 11, 2014
    Publication date: January 29, 2015
    Applicant: LEXTAR ELECTRONICS CORPORATION
    Inventors: Shih-Ju Lo, Cheng-Ping Chang, Hui-Kai Hsu, I-Chun Lee, Wen-Kai Shao
  • Publication number: 20150023021
    Abstract: Disclosed is an LED lighting engine adopting an icicle type diffusion unit. The LED lighting source having a surface light source characteristic and an icicle type diffusion unit corresponding to the surface light source are integrally formed through coupling therebetween to provide a shield type structure having waterproof and dustproof functions. Also, the LED lighting engine may improve lighting efficiency and reduce manufacturing costs when compared to an existing lighting device, and may also be applied in various ways. Also, the LED lighting engine may satisfy quality and pricing standards for LED lighting which are the main variables visible to the eyes of a user. In addition, the LED lighting engine may be simply replaced with conventional LED lighting in a one-on-one ratio (size) which greatly influences market competitiveness. Also, the LED lighting engine may be simply and freely adjusted in terms of light uniformity and light diffusion angle.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 22, 2015
    Inventors: Dong Hoon Hyun, Myeung Jae Noh
  • Publication number: 20150022999
    Abstract: A lighting device in which a heat sink and a cover are formed by co-extrusion and a manufacturing method for the same are provided. The heat sink and the cover may be co-extruded. A shape control portion may be formed at the heat sink to control a shape of a seating portion to seat a circuit substrate during extrusion of the heat sink. In addition, a light characteristic control portion may be provided between a light emitting diode (LED) and the cover to control characteristic of light generated from the LED.
    Type: Application
    Filed: March 27, 2013
    Publication date: January 22, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byeong Hyeon Yu, Wook Pyo Lee, Ariyoshi Tetsuo, Ji Hoon Yun, Cheon Ho Park
  • Publication number: 20150022998
    Abstract: A white light illumination system may comprise: a phosphor package; a first radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 250 nm to about 410 nm; and a second radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 410 nm to about 540 nm; wherein the phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources, and wherein the phosphor package comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm.
    Type: Application
    Filed: May 29, 2014
    Publication date: January 22, 2015
    Applicant: Intematix Corporation
    Inventors: Dejie Tao, Yi-Qun Li, Gang Wang
  • Patent number: 8931922
    Abstract: A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 13, 2015
    Assignee: OSRAM Sylvania Inc.
    Inventors: Nathan Zink, Madis Raukas, Matthew A. Stough, Yi Zheng, Alan Lenef
  • Patent number: 8931923
    Abstract: A light emitting diode (LED) down lamp with a replaceable color temperature filter uses a plurality of blue LEDs as a light source and includes a color temperature filter and a fixing ring. The color temperature filter is installed across the top of the down lamp to apart cover the LEDs with a distance, and then fixed by the fixing ring. Therefore, the color temperature filter can be replaced flexibly with other one in different color temperature one by removing or assembling the fixing ring to change the light projected from the LEDs into different color tone for fitting studio, stage or indoor space applications. Such lamp achieves the effects of enhancing the illumination function of a single down lamp, reducing the inventory cost and improving the practicality.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: January 13, 2015
    Inventors: Huai-Ling Liu, Yung-Hong Wang
  • Publication number: 20150009673
    Abstract: An illumination device includes a base, a light-emitting module, a first layer, and a second layer. The light-emitting module is disposed on the base for generating a progressive-type light-emitting intensity. The first layer encapsulates the light-emitting module. The second layer encloses the first layer. The second layer has a progressive-type thickness corresponding to the progressive-type light-emitting intensity, and both the progressive-type light-emitting intensity and the progressive-type thickness are decreased or increased gradually, thus the progressive-type light-emitting intensity can be transformed into the uniform light-emitting intensity of the second light through the progressive-type thickness of the second layer.
    Type: Application
    Filed: April 14, 2014
    Publication date: January 8, 2015
    Applicants: LITE-ON OPTO TECHNOLOGY (CHANGZHOU) CO., LTD., LITE-ON TECHNOLOGY CORPORATION
    Inventors: CHIA-HAO WU, CHUN-CHANG WU
  • Patent number: 8926110
    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.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 6, 2015
    Assignee: Panasonic Coporation
    Inventors: Ayako Tsukitani, Sayaka Yamaguchi, Takashi Saito
  • Patent number: 8926136
    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.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: January 6, 2015
    Assignee: Texas Instruments Incorporated
    Inventor: Terry A. Bartlett
  • Patent number: 8926156
    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).
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: January 6, 2015
    Assignee: Enplas Corporation
    Inventors: Akinobu Seki, Hiroshi Takatori, Kyouhei Yamada, Masato Nakamura, Masayo Takizawa, Noriyuki Kawahara
  • Patent number: 8919998
    Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
  • Patent number: 8919976
    Abstract: A light source device can include a solid-state light source configured to emit blue light as excitation light and a phosphor section which is excited by the excitation light from the solid-state light source and which emits fluorescent light longer in wavelength than the light emitted from the solid-state light source. In the light source device, a wavelength selective member configured to transmit the excitation light from the solid-state light source and to reflect the fluorescent light from the phosphor section can be provided between the phosphor section and the solid-state light source. The size of the wavelength selective member can be less than the size of the phosphor section which can be greater than the size of the excitation light spot irradiated with the solid-state light source.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: December 30, 2014
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Atsushi Nagasaki, Takashi Sugiyama, Yasuyuki Kawakami
  • Patent number: 8919977
    Abstract: A lamp comprises a thin layer of phosphor (105,113) which is irradiated (46), for example by ultraviolet radiation, by a source which typically comprises a laser diode and a condenser (101,111). This causes the phosphor (105,113) to emit visible light with a Lambertion-type emission pattern. An optical system such as a reflector (102,115) concentrates the light from the phosphor (105,113). The phosphor (105,113) is thermally connected to a heatsink (103,116), of example by a plate (114) of sapphire glass, so as to dissipate the heat produced by the phosphor (105,113). The phosphor (105) may be mounted on a plane reflector (104) disposed on or comprising the heatsink (103) and facing a curved reflector (102) and the radiation source. Alternatively, the optical system may have an optical axis and the phosphor (113) may be substantially flat and inclined with the respect to the optical axis.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: December 30, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: David James Montgomery, James Rowland Suckling, Katsuhiko Kishimoto
  • Patent number: 8919997
    Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
  • Publication number: 20140376244
    Abstract: A light emitting apparatus includes LED chips and a light condenser condensing the light emitted from the LED chips. The light condenser has a first opening functioning as an incident part through which the light emitted from the LED chips enters, a side surface function as a reflector that reflects the light having entered through the first opening, and a second opening functioning as an emission part that emits the light reflected by the side surface. A phosphor layer, which converts the wavelength of the light emitted from the LED chips and emits the wavelength-converted light, is formed in the first opening. The light condenser is arranged such that the phosphor layer is located on the light emission surfaces of the LED chips.
    Type: Application
    Filed: September 11, 2014
    Publication date: December 25, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yasuaki TSUTSUMI, Naoki SONE
  • Publication number: 20140376229
    Abstract: An outdoor luminaire comprising a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a phosphor layer disposed forward of the LED chip in its emission direction is provided. The phosphor layer comprises a phosphor of the formula: Lu3Al5O12:Ce3+ which is activated with up to 1 mol % of Ce relative to Lu, the phosphor being dispersed in a resin. In scotopic and mesopic vision conditions, the luminaire produces illumination affording brighter lighting, higher visual perception and brightness over a broader area.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Toshihiro Tsumori, Toshihiko Tsukatani, Kazuhiro Wataya, Takehisa Minowa
  • Patent number: 8915605
    Abstract: A light source module includes a receiving container, a light source disposed in the receiving container and a filter filtering the light produced from the light source. A backlight unit includes a plurality of light source modules. The plurality of light source modules include a first light source module with a filter and a second light source module alternately disposed with the first light source module. The filter includes a substrate, a transparent layer disposed on the first metal layer and a second metal layer disposed on the transparent layer. The filter transilluminating light of specific area is disposed on the light source module. Thus, the backlight unit having high color reproducibility may be manufactured.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: December 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Kwang Song, Dong-Hwan Kim
  • Publication number: 20140369030
    Abstract: A solid-state light source with LEDs contained in a light recycling cavity emits both light and heat from heat extracting light emitting elements which form the light recycling cavity. Eliminating appended heat sinks makes these light sources ultra lightweight. The light sources can be attached and supported by suspended ceilings without affecting the seismic properties of the ceiling. The heat extracting light emitting elements are combined with a reflector to make directional light sources, which can be attached to ceilings with small magnets. Because the heat extracting light emitting elements transfer the heat from the light source to the illuminated area there is no requirement for disturbing or penetrating the ceiling barrier to a heat sink on the plenum side of the ceiling. This enables a contiguous acoustic ceiling. Further, the light sources are made from non flammable materials and therefore do not affect the fire rating of the ceiling.
    Type: Application
    Filed: March 11, 2014
    Publication date: December 18, 2014
    Applicant: Goldeneye, Inc.
    Inventors: William R. Livesay, Scott M. Zimmerman, Richard L. Ross, Eduardo DeAnda
  • Publication number: 20140369048
    Abstract: An illuminator and a method for fabricating the illuminator are disclosed. The illuminator comprises at least a light source and a discriminator. The light source comprises one or more luminescent layers that substantially convert the energy of a primary electromagnetic radiation to an output radiation. The discriminator comprises one or more layers that substantially transmit the primary electromagnetic radiation to the one or more luminescent layers and reflect at least a portion of the output radiation from the one or more luminescent layers to the viewing hemisphere. A method for applying the illuminator to an object is also disclosed.
    Type: Application
    Filed: August 11, 2014
    Publication date: December 18, 2014
    Inventors: Satish Agrawal, Robert Winskowicz, Edward Kingsley
  • Patent number: 8911115
    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.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: December 16, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventors: Daisuke Ogawa, Kentarou Oohashi, Kazuyoshi Yamada, Katsumi Kimura
  • Publication number: 20140362580
    Abstract: An apparatus for generating light may be comprised of a light source with a lens interposed in a light path from the light source. The lens may be comprised of two or more sections wherein at least one section may be comprised of smart glass. Electrical circuitry may be configured to control a transparency state of the smart glass lens sections. Another embodiment may have two reflectors wherein one of the reflectors may be interposed between the light source and the other reflector and may be comprised of smart glass with a transparent state and a reflective state so that two different reflection patterns may be created. A method for illumination wherein at least one area's illumination is controlled by a section of smart glass is also disclosed.
    Type: Application
    Filed: August 6, 2014
    Publication date: December 11, 2014
    Inventor: Karl S. Jonsson
  • Patent number: 8905587
    Abstract: Described in this application for patent is a novel method and apparatus for modifying a searchlight from a visible-light source to an infrared source. This selective filtering is accomplished by means of a partially filtered cover about the light source which may be moved between first and second positions. In a first position, light projected by the light source passes through an unfiltered section of the lamp cover. In a second position, light projected by the light source passes through a filtered section of the lamp cover.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: December 9, 2014
    Assignee: The Boeing Company
    Inventor: Anton M. Bouckaert
  • Patent number: 8905588
    Abstract: An optical device includes a light source with at least two radiation sources, and at least two layers of wavelength-modifying materials excited by the radiation sources that emit radiation in at least two predetermined wavelengths. Embodiments include a first plurality of n radiation sources configured to emit radiation at a first wavelength. The first plurality of radiation sources are in proximity to a second plurality of m of radiation sources configured to emit radiation at a second wavelength, the second wavelength being shorter than the first wavelength. The ratio between m and n is predetermined. The disclosed optical device also comprises at least two wavelength converting layers such that a first wavelength converting layer is configured to absorb a portion of radiation emitted by the second radiation sources, and a second wavelength converting layer configured to absorb a portion of radiation emitted by the second radiation sources.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: December 9, 2014
    Assignee: Sorra, Inc.
    Inventors: Michael Krames, Troy Trottier, Frank Steranka, William Houck, Arpan Chakraborty
  • Publication number: 20140355270
    Abstract: LED light bulbs include openings in base or cover portions, and optional forced flow elements, for convective cooling. Thermally conductive optically transmissive material may be used for cooling, optionally including fins. A LED light engine may be fabricated from a substrate via planar fabrication techniques and shaped to form a substantially rigid upright support structure. Mechanical, electrical, and thermal connections may be made between a LED light engine and a LED light bulb.
    Type: Application
    Filed: August 12, 2014
    Publication date: December 4, 2014
    Inventors: George R. Brandes, Julio A. Garceran
  • Publication number: 20140347861
    Abstract: A planar lighting device includes a circuit substrate, a plurality of light sources disposed on the circuit substrate, a reflection layer disposed on the circuit substrate, the reflection layer including a first region having a plurality of openings where the respective light sources are located, and a second region connected to the first region, wherein the second region is bent in a direction from the first region, a hole pattern having a plurality of holes provided in the second region of the reflection layer, wherein at least two holes of the hole pattern are different in size, and an optical sheet disposed on the light sources.
    Type: Application
    Filed: August 8, 2014
    Publication date: November 27, 2014
    Inventors: Yongjin KIM, Munheon HONG, Chilkeun PARK, Sangcheon KIM, Mangeun Kim
  • Publication number: 20140347860
    Abstract: Disclosed is a method for producing a high-luminance monochromatic light based on optical wavelength conversion, which is used in a light source comprising an excitation light source, and comprises the steps of: setting a first wavelength conversion material and a second wavelength conversion material; using an excitation beam to excite the first wavelength conversion material and the second wavelength conversion material, wherein the first wavelength conversion material absorbs the excitation light to produce a first excited light; the second wavelength conversion material absorbs a first waveband portion of the first excited light to produce a second excited light, where the energy of the absorbed first waveband portion is more than 50% of the total energy of the first excited light; mixing the second excited light and the unabsorbed portion of the first excited light together to form the high-luminance monochromatic light.
    Type: Application
    Filed: February 29, 2012
    Publication date: November 27, 2014
    Applicant: APPOTRONICS (CHINA) CORPORATION
    Inventors: Yi Yang, Yi Li
  • Patent number: 8894244
    Abstract: A transmission type optical element (10) comprises a surface relief micro-grating (5, 9) for guiding light (13) propagating through the optical element. According to the present invention, at least a portion (5) of the thickness of the optical element (10) is formed of a colored material (4) so as to make the optical element colored.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: November 25, 2014
    Assignee: Nanocomp Oy Ltd
    Inventor: Valtteri Kalima
  • Patent number: 8896317
    Abstract: A method of determining the dominant output wavelength of an LED, includes determining an electrical characteristic of the LED which is dependent on the voltage-capacitance characteristics, and analyzing the characteristic to determine the dominant output wavelength.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: November 25, 2014
    Assignee: NXP B.V.
    Inventors: Radu Surdeanu, Viet Nguyen Hoang, Benoit Bataillou, Pascal Bancken, David Van Steenwinckel
  • Patent number: 8894243
    Abstract: An optical filter which minimizes color shift, increases brightness and improves visibility and an organic light-emitting display having the same. The optical filter includes a micro pattern film disposed on an organic light-emitting panel. The micro pattern film includes a base material and a micro pattern engraved from the surface of the base material that adjoins the organic light-emitting panel. The micro pattern has a plurality of engraved shapes with a non-circular cross-section which has a depth greater than a width.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 25, 2014
    Assignee: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Eun Young Cho, Eui Soo Kim
  • Publication number: 20140334143
    Abstract: A novel light-emitting device or light-emitting panel in which reflected external light is reduced is provided. A novel display panel in which reflected external light is reduced is provided. The present inventors have conceived a light-emitting device including a light-emitting module that emits light with a spectrum having a peak at one wavelength in a visible light region and an absorption layer that absorbs part of light with wavelengths shorter than the one wavelength and part of light with wavelengths longer than the one wavelength more easily than light with the one wavelength.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tetsuji Ishitani, Masaru Nakano
  • Publication number: 20140334127
    Abstract: The present application is directed to an illumination device comprising a recycling cavity defined by recycling surfaces and a light emission surface; a light source within the cavity. A spectrum modifying layer is on a portion of the recycling surface, the spectrum modifying layer producing a spectral response different from the spectral response of the recycling surface. In some embodiments, the spectrum modifying layer shifts the spectral properties of the light being emitted from the light emission area from the spectral properties of the light source. In some embodiments, the spectrum modifying layer selectively absorbs a portion of light along the light source spectrum. In some embodiments, the spectrum modifying layer re-emits light at a wavelength longer than the wavelength it absorbed.
    Type: Application
    Filed: December 7, 2012
    Publication date: November 13, 2014
    Inventors: Ellen O. Aeling, Michael A. Meis, John T. Simpson, Joseph A. Hoffman, Paul E. Humpal
  • Patent number: 8882299
    Abstract: Disclosed is a wavelength conversion member that is provided with: a light transmissive member including a light input plane into which excitation light is inputted, and a light output plane from which wavelength converted light is outputted; and a semiconductor fine particle phosphor, which is dispersed in the light transmissive member, and which absorbs the excitation light, converts the wavelength, and emits light. The dispersion concentration of the semiconductor fine particle phosphor in the direction parallel to the light traveling direction, i.e., the direction connecting the light input plane and the light output plane, is lower than the dispersion concentration of the semiconductor fine particle phosphor in the direction orthogonal to the light traveling direction.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Junichi Kinomoto, Tatsuya Ryowa
  • Patent number: 8882300
    Abstract: A color filter comprises a first filter element and a second filter element. The first filter element includes a plurality of arrayed filter regions allowing a first spectral component of incident light to pass and reflecting other spectral components of the incident light. The second filter element includes a plurality of arrayed filter regions allowing a second spectral component of the incident light to pass and reflecting other spectral components of the incident light. The center of the filter regions of the second filter element is deviated from the center of the filter regions of the first filter element so that the light reflected from the first filter element can pass through the second filter element. Thereby is enhanced the energy efficiency of the color filter. An edge-type backlight module using the abovementioned color filter is also disclosed.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: November 11, 2014
    Assignee: National Tsing Hua University
    Inventors: Cheng-Huan Chen, Po-Hung Yao
  • Publication number: 20140321122
    Abstract: An LED-based lighting device may comprise a substrate having a top surface with a plurality of light emitting diodes (LEDs) disposed on the top surface of the substrate. The LEDs can be arranged in a plurality of concentric rings on the substrate with each LED having a major length being oriented along the circumference of the concentric rings. An electrical driver board can be electrically connected to the plurality of LEDs. A heat sink can be thermally connected to the substrate and the plurality of LEDs. The electrical driver board can be disposed at least partially within the heat sink. A reflector assembly can be disposed on the heat sink such that the focal plane is disposed generally adjacent to the plurality of LEDs. The light assembly can generate a luminous flux greater than 650 lumens.
    Type: Application
    Filed: May 19, 2014
    Publication date: October 30, 2014
    Inventor: James L. Ecker
  • Publication number: 20140313728
    Abstract: An arrangement for generating light comprising a light emitting diode, comprising a conversion element, is proposed, wherein the conversion element is arranged above the light emitting diode and is provided for at least partly changing the wavelength of the electromagnetic radiation emitted by the light emitting diode, wherein the conversion element is designed in such a way that the light impinging on the conversion element from outside in a first color range is reflected, wherein the conversion element is surrounded by an edge region, wherein the edge region is designed in such a way that light impinging on the edge region in a second color range is reflected, wherein the second color range at least partly has a color range complementary to the first color range.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Ion Stoll, Ulrich Streppel
  • Publication number: 20140307442
    Abstract: A light emitting device includes a light emitting diode (LED) module and a rotatable wavelength converting structure. The LED module includes a substrate and a plurality of LED chips. The LED chips are disposed on the substrate, and each of the LED chips has a light emitting surface. The rotatable wavelength converting structure is disposed on the LED module and has a plurality of wavelength converting blocks with at least two different colors. Each of the LED chips at least corresponds to one wavelength converting block. The wavelength converting blocks are disposed on the light emitting surfaces of the LED chips. The rotatable wavelength converting structure rotates relative to the LED module so as to change the wavelength converting blocks that the LED chips correspond to.
    Type: Application
    Filed: July 25, 2013
    Publication date: October 16, 2014
    Applicant: GENESIS PHOTONICS INC.
    Inventor: Shao-Ying Ting
  • Patent number: 8858030
    Abstract: A laser light source for emitting coherent electromagnetic radiation has a vertical far-field radiation profile, having a series of semiconductor layers for generating the coherent electromagnetic radiation. An active region is located on a substrate. The coherent electromagnetic radiation is emitted during operation in an emission direction at least from a main emission region of a radiation output surface, and the radiation output surface is formed by a side surface of the sequence of semiconductor layers. A filter element suppresses coherent electromagnetic radiation in the vertical far-field radiation profile. The radiation was generated during operation and emitted by an auxiliary emission region of the radiation output surface. The auxiliary emission region is vertically offset from and spatially separated from the main emission region.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: October 14, 2014
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Adrian Avramescu, Alfred Lell, Soenke Tautz, Andreas Breidenassel
  • Patent number: 8851693
    Abstract: A stimulated lighting device for stimulatable light emission including a luminescent sheet including light stimulatable particles which emit secondary light upon receiving primary light. The lighting device includes a source configured to generate and direct the primary light obliquely onto the luminescent sheet, at least one reflector configured to reflect at least a part of the primary light and a part of the secondary light onto the luminescent sheet and configured to reflect at least a part of scattered primary light and a part of the secondary light from the luminescent sheet toward the light exit, and a light exit configured to emanate light as a combination of the primary light and the secondary light.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 7, 2014
    Assignee: Research Triangle Institute
    Inventors: Michael Kasper Lamvik, James Lynn Davis
  • Publication number: 20140293234
    Abstract: A light module includes a first light source. The first light source includes a first light-emitting element and a first lens element. The first light-emitting element includes a first light-emitting chip for emitting a first light beam and a wavelength conversion material located on the first light-emitting chip for transferring parts of the first light beam to a second light beam. The first lens element faces the first light-emitting element and is located on a transmission path of the first light beam and a transmission path of the second light beam, and the first lens element includes an optical filter for filtering off the first light beam and being passed by the second light beam.
    Type: Application
    Filed: December 30, 2013
    Publication date: October 2, 2014
    Applicant: Young Optics Inc.
    Inventors: Yu-Hsiu LIN, Hung-You CHENG, Yu-Po CHEN, S-WEI CHEN
  • Publication number: 20140293608
    Abstract: LED lighting device in which color-mixed light according to a mixture of a blue optical emission spectrum according to the emission from an LED element, a red optical emission spectrum according to the emission from a red phosphor, and a green optical emission spectrum according to the emission from a green phosphor is emitted, wherein in the spectrum for the emitted color-mixed light, letting the relative spectral area for the principal-wavelength peak of the blue optical emission spectrum be AB and the peak emission intensity be IB, letting the relative spectral area of the green optical emission spectrum be AG and the peak emission intensity be IG, and letting the relative spectral area of the red optical emission spectrum be AR and the peak emission intensity be IR, then IB<IG, IB<IR, AB?AG, AB?AR, and AB/(AR+AG)?0.4.
    Type: Application
    Filed: March 29, 2014
    Publication date: October 2, 2014
    Applicant: ASAHI RUBBER INC.
    Inventor: Takashi Kanahira
  • Publication number: 20140293609
    Abstract: A coated phosphor includes a sulfide phosphor coated with silicon dioxide film. The silicon dioxide film includes a metal oxide powder. The metal oxide powder includes a zinc oxide powder such that less than 20 parts by mass of the zinc oxide powder relative to 100 parts by mass of the sulfide phosphor is blended therein.
    Type: Application
    Filed: December 5, 2012
    Publication date: October 2, 2014
    Inventors: Masahide Daimon, Takehiro Yamasuge, Tsuneo Kusunoki
  • Patent number: 8847481
    Abstract: A lighting device including a photoluminescent plate may be provided that includes a light source and a photoluminescent plate disposed over the light source. The photoluminescent plate includes a base layer and a first phosphor layer. The base layer transmits light and has a first roughness on one surface thereof. The first phosphor layer is disposed on the one surface of the base layer and includes a first phosphor.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: September 30, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Jong Chan Park, Young Jin Kim
  • Publication number: 20140285997
    Abstract: The present disclosure provides a (Ba1?z,Srz)3MgSi2O8:Eu2+ based phosphor with high emission quantum efficiency. Specifically, the present disclosure provides a blue light emitting phosphor including: a (Ba1?z,Srz)3MgSi2O8 based crystal where z satisfies 0?z<1 and a (Ba1?z,Srz)MgSiO4 based crystal where z satisfies 0?z<1 as a host crystal; and Eu2+ as a luminescent center.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: Mitsuru NITTA, Seigo SHIRAISHI, Osamu INOUE, Kojiro OKUYAMA, Yoshihisa NAGASAKI, Takashi OHBAYASHI
  • Publication number: 20140285996
    Abstract: A lighting apparatus for emitting white light including a semiconductor light source emitting radiation with a peak emission between from about 250 nm to about 500 nm and a first phosphor having a peak emission between about 550 and 615 nm, wherein an overall emission spectrum of the lighting apparatus has a depression between about 550 and 615 nm, whereby the red-green color contrast is increased versus a reference illuminant.
    Type: Application
    Filed: June 4, 2014
    Publication date: September 25, 2014
    Applicant: GE LIGHTING SOLUTIONS LLC
    Inventors: Emil Vergilov Radkov, Ilona Elisabeth Hausmann, Derek Allen Publicover
  • Publication number: 20140285995
    Abstract: LED dies are suspended in an ink and printed on a first support substrate to form a light emitting layer having a light emitting surface emitting primary light, such as blue light. A mixture of a transparent binder, phosphor powder, and transparent glass beads is formed as an ink and printed over the light emitting surface. The mixture forms a wavelength conversion layer when cured. The beads are preferably sized so that the tops of the beads protrude completely through the conversion layer. Some of the primary light passes through the beads with virtually no attenuation or backscattering, and some of the primary light is converted by the phosphor to secondary light. The combination of the secondary light and the primary light passing though the beads may form white light. The overall color is highly controllable by controlling the percentage weight of the beads.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Inventors: William J. Ray, Reuben Rettke, Mark D. Lowenthal, Alexander Ray
  • Patent number: 8840267
    Abstract: An illumination device and a projection system using the same. The illumination device includes two or more color channels each including one or more light sources for generating a color light. At least one of the color channels includes light sources of a first type for generating a first (narrow band) light and light sources of a second type for generating a second light. The dominant wavelengths of the first and second lights are within 50 nm of each other, and the width of the combined spectrum (sum of normalized spectra of the first and second lights) is greater than the width of the spectrum of the first light by at least 10 nm. A wavelength-based light combiner is used to combine the color lights from the color channels into a combined light.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: September 23, 2014
    Assignee: Appotronics Corporation Limited
    Inventors: Yi Li, Quan Zhang, Yi Yang, Fei Hu
  • Patent number: 8840253
    Abstract: A light source apparatus includes: an excitation light source including a laser light source; a first wheel that is controlled to rotate, and includes, in a part of a surface thereof to be illuminated by excitation light emitted from the excitation light source, a phosphor layer to be excited by the excitation light; a dichroic mirror that guides fluorescence emitted from the phosphor layer of the first wheel and the excitation light to an illumination optical system; and a second wheel that is controlled to rotate, and includes a dichroic filter that transmits light having a desired wavelength component of each of the fluorescence and the excitation light output from the dichroic mirror.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 23, 2014
    Assignee: Panasonic Corporation
    Inventor: Hiroshi Kitano
  • Patent number: 8840275
    Abstract: A lighting assembly includes a light guide having opposed major surfaces between which light propagates by total internal reflection, a light input edge, and two light output regions of different optical characteristics and at least one of which is associated with a corresponding one of the major surfaces. The lighting assembly also includes a light source located adjacent the light input edge. The light source and the light guide variably positionable relative to one another to vary a location on the light input edge at which the light is input to the light guide such that the light is emitted from the light guide selectively apportioned between the light output regions so that a characteristic of the light output from the lighting assembly is modified based on the optical characteristics associated with the light output regions and the relative positioning of the light source and the light guide.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 23, 2014
    Assignee: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Fumitomo Hide, Alexey Titov, Ian Hardcastle
  • Publication number: 20140268794
    Abstract: The present disclosure relates to optical elements and coatings comprising rare-earth element (REE) compounds for light wavelength attenuation of light emitting diode (LED) elements and lamps. More particularly, the present disclosure relates to LED elements and lamps comprising wavelength attenuating elements comprising REE compounds having at least a portion of non-crystalline, non-hydrate form, methods of preparing such elements, and LED elements, LED arrays, LED packages, optical elements, lamps and systems made with same.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventor: CREE, INC.
  • Publication number: 20140268731
    Abstract: A low bay lighting system which may include a fixture housing and a plurality of light sources disposed on a mounting surface in the fixture housing. The low bay lighting system may also include a power supply and an optic that is configured for emission of glare-inducing wavelength light at non-glare-inducing angles. The non-glare-inducing angles may be measured from a horizontal axis running through a medial portion of the mounting surface of the fixture housing. One or more of the plurality of light sources may be configured to emit light having a wavelength range within an anti-glare wavelength range. The light emitted at glare-inducing angles may have a wavelength range substantially within the anti-glare wavelength range.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: LIGHTING SCIENCE GROUP CORPPORATION
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Mark Andrew Oostdyk, Addy S. Widjaja, Ran Zhou