Phosphor On Envelope Wall Patents (Class 313/485)
  • Patent number: 10701776
    Abstract: The present disclosure provides methods for generating tunable white light with controllable circadian energy performance. The methods use a plurality of LED strings to generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Different light emitting modes can be selected that utilize different combinations of the plurality of LED strings in order to tune the generated white light. One or more of the LED strings can have ultraviolet or violet LEDs.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 30, 2020
    Assignee: EcoSense Lighting, Inc.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Patent number: 10677399
    Abstract: The present disclosure provides methods for generating white light. The methods use a plurality of LED strings to generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 9, 2020
    Assignee: ECOSENSE LIGHTING INC.
    Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
  • Patent number: 10669479
    Abstract: A light-emitting device 1 includes: a solid-state light-emitting element 10 that radiates a laser beam L; and a wavelength converter 50 including a plurality of types of phosphors which receive the laser beam L and radiate light. The phosphors 50 included in the wavelength converter are substantially composed of a Ce3+-activated phosphor. Then, output light of the light-emitting device 1 has a light component across a wavelength range of at least 420 nm or more and less than 700 nm. The light-emitting device 1 is capable of radiating light with high color rendering properties over a wide wavelength range.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: June 2, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shozo Oshio, Takeshi Abe
  • Patent number: 10600633
    Abstract: The present design includes a gas discharge lamp having a base, a closed top cylindrical envelope fixedly mounted to the base, the closed top cylindrical envelope comprising an integrally formed partition defining a pair of openings on opposite sides of the partition, and two electrodes positioned proximate the base, each electrode on an opposite side of the partition. Sides of the partition contact the closed top cylindrical envelope and the partition includes a notch formed proximate an upper edge of the partition thereby establishing an exclusive gas passageway between the pair of openings.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: March 24, 2020
    Assignee: Jelight Company, Inc.
    Inventor: Marinko Jelic
  • Patent number: 10529900
    Abstract: A solid state lighting device includes at least one electrically activated solid state light emitter configured to stimulate emissions of first through third lumiphoric materials having peak wavelengths in ranges of from 485 nm to 530 nm, from 575 nm to 595 nm, and from 605 nm to 640 nm, respectively (or subranges thereof defined herein), with the third peak having a full width half maximum value of less than 60 nm. The resulting device generates aggregated emissions having a suitably high color rendering index (e.g., CRI Ra) value (e.g., at least 70), and also having a spectral power distribution with a Melanopic/Photopic ratio within a specified target range as a function of correlated color temperature, thereby providing increased perceived brightness.
    Type: Grant
    Filed: May 5, 2018
    Date of Patent: January 7, 2020
    Assignee: IDEAL Industries Lighting LLC
    Inventors: Fan Zhang, Ryan Gresback, James Ibbetson, Bernd Keller, Antony Paul Van De Ven
  • Patent number: 10438776
    Abstract: An electrode assembly for use in a dielectric barrier discharge plasma source comprises a base metal plate, an enamel layer on a surface of the base metal plate and embedded electrodes embedded in the enamel layer. The electrode assembly may be made by depositing a one or more layers of powdered glass over a surface of the base metal plate, fusing the powdered glass the one or more layers each in a separate heating step for the relevant layer. To form the embedded electrodes, a pattern of electrode material is provided over the powdered glass of the one or more layers after fusing the one or more layers. Subsequently one or more further layers of powdered glass are deposited over the electrodes and the layer(s) below it, and the powdered glass in each of the one or more further layers is fused in a separate heating step.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 8, 2019
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Marcel Simor, André Schilt
  • Patent number: 10236422
    Abstract: Green emitting phosphors have the empirical composition RE1?wAwMxEy, where RE may be one or more Rare Earth elements (for example, Eu or Gd), A may be one or more elements selected from the group Mg, Ca, Sr, or Ba, M may be one or more elements selected from the group Al, Ga, B, In, Sc, Lu or Y, E may be one or more elements selected from the group S, Se, O, or Te, w is greater than or equal to zero, or greater than or equal to 0.01, or greater than or equal to 0.05, and less than or equal to about 0.8, 2?x?4, and 4?y?7.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: March 19, 2019
    Assignee: EIE MATERIALS, INC.
    Inventors: Robert Nordsell, Evan Thomas, Yong Bok Go, Kristen Baroudi, Jonathan Melman, Yuming Xie
  • Patent number: 10224466
    Abstract: Embodiments of the invention include a semiconductor light emitting device, a first wavelength converting member disposed on a top surface of the semiconductor light emitting device, and a second wavelength converting member disposed on a side surface of the semiconductor light emitting device. The first and second wavelength converting members include different wavelength converting materials.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 5, 2019
    Assignee: Lumileds LLC
    Inventors: Kenneth Vampola, Han Ho Choi
  • Patent number: 10190046
    Abstract: A luminescent material mixture has a first luminescent material and a second luminescent material, wherein, under excitation with blue light, an emission spectrum of the first luminescent material has a relative intensity maximum in a yellowish-green region of the spectrum at a wavelength of greater than or equal to 540 nm and less than or equal to 560 nm and an emission spectrum of the second luminescent material has a relative intensity maximum in an orange-red region of the spectrum at a wavelength of greater than or equal to 600 nm and less than or equal to 620 nm.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: January 29, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Rebecca Römer, Barbara Huckenbeck, Stefan Lange, Hailing Cui
  • Patent number: 10168464
    Abstract: A backlight unit (lighting device) 12 includes LEDs (light source) 17, a light guide plate 19 including a light entry end surface 19b on at least a part of an outer peripheral end surface and a light output plate surface 19a on a plate surface, and a wavelength conversion sheet (wavelength conversion member) 20 disposed so as to overlap the light output plate surface 19a of the light guide plate 19 and containing a phosphor for wavelength-converting the light from the LEDs 17. Light from the LED 17 enters through the light entry end surface 19b and exits through the light output plate surface 19a. The wavelength conversion sheet 20 includes an increased phosphor portion 27 on at least a part of outer peripheral side portions 20OP thereof and the increased phosphor portion 27 has a phosphor content per unit area that is greater than that in a central portion 20IP.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: January 1, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Harada, Keitaro Matsui
  • Patent number: 10158057
    Abstract: Packaged chip-on-board (COB) LED arrays are provided where a color conversion medium is distributed within a glass containment plate, rather than silicone, to reduce the operating temperature of the color conversion medium and avoid damage while increasing light output. A lighting device is provided comprising a chip-on-board (COB) light emitting diode (LED) light source, a light source encapsulant, a distributed color conversion medium, and a glass containment plate. The COB LED light source comprises a thermal heat sink framework and at least one LED and defines a light source encapsulant cavity in which the light source encapsulant is distributed over the LED. The glass containment plate is positioned over the light source encapsulant cavity and contains the distributed color conversion medium. The light source encapsulant is distributed over the LED at a thickness that is sufficient to encapsulate the LED and define encapsulant thermal conduction paths.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 18, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Timothy James Orsley, William Richard Trutna, Nicholas Francis Borrelli, Lisa Ann Lamberson, Robert Michael Morena
  • Patent number: 10151868
    Abstract: A backlight module includes a light source, a light guide plate and a light-adjusting member. A light source chromaticity is measured from light generated by the light source. The light guide plate has a light-incident surface and a light-emitting surface. Light generated by the light source enters the light guide plate and emits out from the light-emitting surface. With the light-adjusting member, a first light guide plate chromaticity is measured from the light-emitting surface. There is a first difference value between the first light guide plate chromaticity and the light source chromaticity. Without the light-adjusting member, a second light guide plate chromaticity is measured from the light-emitting surface. There is a second difference value between the second light guide plate chromaticity and the light source chromaticity. The first difference value is different from the second difference value.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 11, 2018
    Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics Corporation
    Inventors: Jui-Lin Chen, Chao-Min Su, Jing-Siang Jhang, Hung-Pin Cheng, Wei-Hsiang Chiu, Bo-Lan Fang, Wei Yi, Kuan-Tun Chen, Li-Hui Chen, Wei-Chung Lu
  • Patent number: 10139546
    Abstract: A display device is disclosed. The display device includes a display panel, a light guide plate located in a rear of the display panel, a light assembly located on a side of the light guide plate and providing the light guide plate with light, and a light absorbing portion formed on a back surface or a front surface of the light guide plate and absorbing the light provided by the light assembly in a predetermined wavelength range.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 27, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Geunhwan Kim, Sujin Sim, Woosuk Lee, Juyoung Joung, Minho Kim
  • Patent number: 10120110
    Abstract: A wavelength conversion sheet includes a phosphor, and one or more barrier films that seal the phosphor. At least one of the barrier films includes a coating layer having an optical function. The coating layer is provided to a surface of the barrier film.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: November 6, 2018
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Osamu Tokinoya, Ikuno Higashi
  • Patent number: 10120123
    Abstract: According to one embodiment, a container case accommodating an optical member includes a bottom wall, sidewalls provided to stand along side edges of the bottom wall, and flanges extending from the sidewalls. The container case is formed of a reflective sheet or reflective film.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: November 6, 2018
    Assignee: Japan Display Inc.
    Inventors: Tetsuro Ochi, Hiroyuki Sakakura
  • Patent number: 10029116
    Abstract: This application is directed to a method of treating a patient with acne by applying a photodynamic agent to skin having acne lesions, waiting at least 12 hours, and then exposing the skin to which the photodynamic agent has been applied to light that causes an activation reaction.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 24, 2018
    Assignee: DUSA PHARMACEUTICALS, INC.
    Inventor: Scott Lundahl
  • Patent number: 9991237
    Abstract: A light emitting device includes a base, a first light emitting element, a second light emitting element, and a sealing member. The first light emitting element has an active layer of a nitride semiconductor and has a first emission peak wavelength in a blue region. The second light emitting element has an active layer of a nitride semiconductor and has a second emission peak wavelength longer than the first emission peak wavelength of the first light emitting element. The sealing member includes a first region and a second region. The first region contains a phosphor to be excited by light from the first light emitting element. The first region is provided on an element mounting surface. A first upper surface of the first light emitting element is located in the first region. The second region does not substantially contain the phosphor and is provided on the first region.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: June 5, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Shimpei Sasaoka, Kazuto Okamoto
  • Patent number: 9980347
    Abstract: The invention relates to a lighting system for lighting a space (R) which lighting system has means (4) for producing space illumination over a large area, and means (5) for producing concentrated local lighting. Furthermore the lighting system has a presence detector (6) for detecting the presence of at least one person (P) in the space (R) and a control device (8) for controlling the means (4) for producing the space illumination and the means (5) for producing the local lighting. To this end the control device (8) is configured to control the space illumination over a large area automatically as a function of the daylight or as a function of the daytime and to control the local lighting automatically as a function of the presence of at least one person (P) in the space (R). Because the space illumination is controlled automatically as a function of the daylight or of the daytime, the illumination can be prevented from being reduced so much that a lighting mood is produced which has a negative effect.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: May 22, 2018
    Assignee: ZUMTOBEL LIGHTING GMBH
    Inventors: Manfred Petschulat, Sebastian Schubnell
  • Patent number: 9969932
    Abstract: The invention provides a lighting device (1) comprising (a) a light source (10) configured to generate light source light (11), and (b) a light converter (100) configured to convert at least part of the light source light (11) into visible converter light (111), wherein the light converter (100) comprises a matrix (120) containing an organic luminescent material (140) of the benzoxanthene derivative type. The lighting device may further comprise a further luminescent material (130).
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: May 15, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Johan Lub, Rifat Ata Mustafa Hikmet, Dirk Veldman
  • Patent number: 9759855
    Abstract: Hybrid nanoparticles and transparent light guides using the hybrid nanoparticles are disclosed. In some examples, a hybrid nanoparticle may include an organic blue-light emitting material, and an inorganic material bonded to the organic blue-light emitting material.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: September 12, 2017
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Hidekazu Hayama
  • Patent number: 9684483
    Abstract: A device and method of providing a versatile illuminated panel for walls, product displays, and other surfaces is described. Panels are constructed from a variable number of rectangular illuminated tiles, where the tiles mate edge-to-edge so as to create a nearly seamless visual panel effect. Illumination within each tile is uniform to also create a nearly seamless visual panel effect. End-users may create panels of varying sizes and shapes by using different quantities of a standard tile. The software within the invention automatically determines the number and arrangement of tiles within each assembled panel. Each tile comprises a plurality of illuminators, an optical means to distribute light from the illuminators uniformly across the tile, and at least one communication interface. In one embodiment the tiles are linked into a communications tree-structure; and the location of each tile within the tree constitutes its logical address.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: June 20, 2017
    Assignee: Lellan, Inc.
    Inventors: Dean Ekkaia, Frank Halasz, Richard Alfons Wimmer
  • Patent number: 9644817
    Abstract: A light converter, and lights and displays incorporating the light converter are disclosed together with methods of making the light converter. The light converter has a substrate having a first layer of phosphor particles disposed on an area of one surface of the substrate. The first layer has a thickness of about 1 monolayer of phosphor particles, and the phosphor particles in the first layer form a uniform and dense layer. The thickness of the substrate can be between about 25 ?m and about 500 ?m in embodiments intended to be flexible and between about 0.5 mm and 2 mm in embodiments that can be formed into rigid shapes. The screen weight of the phosphor particles is between about 0.5 mg/cm2 and about 40 mg/cm2. The substrate can include a base layer and an adhesive layer.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 9, 2017
    Inventor: Hisham Menkara
  • Patent number: 9620486
    Abstract: A light-emitting diode module for emitting white light includes a first light emitting diode chip for generating radiation in the blue spectral range having a first peak wavelength, a second light emitting diode chip for generating radiation in the blue spectral range having a second peak wavelength, a third light emitting diode chip for generating radiation in the red spectral range having a third peak wavelength, a first and a second phosphors disposed downstream of the first and the second light emitting diode chips, respectively. The first light emitting diode chip with the first phosphor generates a first mixed radiation and the second light emitting diode chip with the second phosphor generates a second mixed radiation. The first phosphor exhibits a first absorption maximum at a wavelength greater than the first peak wavelength. The second phosphor exhibits a second absorption maximum at a wavelength less than the second peak wavelength.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 11, 2017
    Assignee: OSRAM GMBH
    Inventors: Reiner Windisch, Krister Bergenek
  • Patent number: 9620659
    Abstract: A preparation method of a glass film, a photoelectric device and a packaging method thereof, and a display device are provided, and the preparation method of a glass film includes: forming a sacrificial layer on a base substrate; forming a glass frit film on the sacrificial layer; solidifying the glass frit film; and removing the sacrificial layer, so as to obtain a glass film. The method can bring an individual glass film, which is helpful to a narrow-bezel design of a photoelectric device.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 11, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Dan Wang
  • Patent number: 9580650
    Abstract: A method of manufacturing Ce:YAG polycrystalline phosphor with the formula (Y1-x-mAxCem)3(Al1-yBy)5O12; 0?x?1, 0?y?1, 0?m?0.05; wherein A is one of Lu, Tb, Pr, La and Gd; and wherein B is one of Ga, Ti, Mn, Cr and Zr.
    Type: Grant
    Filed: December 25, 2014
    Date of Patent: February 28, 2017
    Inventors: Dun-Hua Cao, Yong-Jun Dong, Yue-Shan Liang
  • Patent number: 9541271
    Abstract: A bulb head structure and an LED bulb comprising the same are provided. The bulb head structure includes a hollow-shaped member which is a hollow cup-shaped structure, and an outer surface of an end is disposed with a lampholder connecting part, an inner insulating member, a substrate, two flexible electrode members which are respectively disposed at side edge and one end of the substrate, and a conduction member. The inner insulating member and the substrate are disposed in the hollow-shaped member, the inner insulating member is adjacent to one end of the hollow-shaped member, and the substrate and the conduction member are respectively disposed at two sides of the inner insulating member. Wherein, one flexible electrode member contacts with the hollow-shaped member and the other flexible electrode member contacts with the conduction member to enable the substrate electrically connecting to the hollow-shaped member and the conduction member respectively.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: January 10, 2017
    Assignee: KUNSHAN NANO NEW MATERIAL TECHNOLOGY CO., LTD
    Inventor: Hung-Tu Lu
  • Patent number: 9416941
    Abstract: A light-extraction apparatus for an optical-film lighting set having a visible-light coating include a transparent sealed body, a wide AOR (0 degree to 90 degrees) optical film for reflecting ultraviolet lights and a visible light layer. The transparent sealed body is formed as a hollow shell body to accommodate an ultraviolet light source. A supporting member coated with the optical film and the visible light layer is constructed to a wall of the shell body or inside the shell body. The visible light layer is consisted of monolayered fluorescent or phosphorescent particles, and the particles are evenly distributed to coat on the interior wall of the shell body or the supporting member inside the shell body in a sparse scattering manner. A fixed area ratio of the coverage of the particles to that of the inter-particle spacing is then provided to the visible light layer for obtaining a higher illumination performance.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 16, 2016
    Inventor: Jenn-Wei Mii
  • Patent number: 9399731
    Abstract: A blue phosphor having an emission peak wavelength different from that of conventional blue phosphors, a method for producing the same, and a high-intensity luminescent device using the phosphor are provided. The phosphor of the present invention is represented by a general formula MeaRebAlcSidOeNf (Me may contain one or more elements selected from Mg, Ca, Sc, Y, and La as second elements, provided that Sr or Ba is contained as an essential first element, and Re may contain one or more elements selected from Mn, Ce, Tb, Yb, and Sm as second elements, provided that Eu is contained as an essential first element), where the composition ratio represented by a, b, c, d, e, and f has the following relations: a+b=1, 0.005<b<0.25, 1.60<c<2.60, 2.50<d<4.05, 3.05<e<5.00, and 2.75<f<4.40.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: July 26, 2016
    Assignee: DENKA COMPANY LIMITED
    Inventors: Go Takeda, Ryo Yoshimatsu, Naoto Hirosaki
  • Patent number: 9401462
    Abstract: A light emitting device comprising: a base; a light emitting element arranged on a surface of the base; a first resin layer arranged to surround a side portion of the light emitting element and to be spaced apart from the side portion; and a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer, wherein the first resin layer comprises a light transmissive resin and a first fluorescent material, wherein the second resin layer comprises a light transmissive resin and a second fluorescent material, and wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 26, 2016
    Assignee: NICHIA CORPORATION
    Inventor: Yuji Akazawa
  • Patent number: 9334442
    Abstract: The invention provides a a luminescent material comprising particles of UV-luminescent material having a coating, wherein the coating (a “multi-layer coating”) comprises a first coating layer and a second coating layer, wherein the first coating layer is between the luminescent material and the second coating layer, and wherein in a specific embodiment the second coating layer comprises an alkaline earth oxide, especially MgO. Further, the invention provides a lighting unit comprising such luminescent material.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: May 10, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Georg Greuel, Thomas Juestel, Jagoda Magdalena Kuc
  • Patent number: 9312435
    Abstract: An optoelectronic semiconductor device includes a first light source that emits green, white or white-green light and includes a semiconductor chip that emits in the blue spectral range, and a first conversion element attached directly to the semiconductor chip, a second light source that emits red light, having a semiconductor chip, that emits in a blue spectral range, and having a second conversion element attached directly to the semiconductor chip, and/or having a semiconductor chip that emits in a red spectral range, a third light source that emits blue light and has a semiconductor chip emitting in the blue spectral range, and a filler body having a matrix material into which a conversion agent is embedded, wherein the filler body is disposed downstream of the light sources collectively.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 12, 2016
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Christian Gärtner, Ales Markytan, Albert Schneider, Stephan Kaiser
  • Patent number: 9313858
    Abstract: A phosphor-enhanced light source and a luminaire is provided comprising a light exit window, a light emitter, a luminescent layer. The light emitter emits light of a first color distribution towards the light exit window. The luminescent layer comprises first second areas, forming a pattern. A first characteristic of the first area is similar to a second characteristic of the second area to obtain a first light emission by the first area into the ambient and a second light emission by the second area into the ambient. The respective light emissions are experienced as similar by the viewer if the light emitter is in operation. A first reflection characteristic of the first area is different from a second reflection characteristic of the second area to obtain a first ambient light reflection by the first area that is different from a second ambient light reflection by the second area.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 12, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Patent number: 9312451
    Abstract: The efficiency and color contrast of a lighting device may be improved by using wavelength shifting material, such as a phosphor, to absorb less desired wavelengths and transmit more desired wavelengths. A double-notch reflective filter may pass desired wavelengths such as red and green, while returning or reflecting less desired wavelengths (blue and yellow) away from an optical exit back toward wavelength shifting material and re-emitted as light of more desirable wavelengths.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 12, 2016
    Assignee: EXPRESS IMAGING SYSTEMS, LLC
    Inventors: William G. Reed, John O. Renn
  • Patent number: 9279549
    Abstract: A light-emitting module includes a light-emitting element, a first wavelength converter and a second wavelength converter. The first wavelength converter is located in an optical pathway of emitted light, and converts a portion of the emitted light to light in a first visible wavelength band. The second wavelength converter is located in the optical pathway on an opposite side of the first wavelength converter relative to the light-emitting element, and converts at least a portion of light passing unconverted through the first wavelength converter to light in a second visible wavelength band, differing from the first visible wavelength band. The light-emitting module also includes a light-absorbing substance, absorbing light in at least a wavelength band from 570 nm to 590 nm, which is present in the optical pathway between the light-emitting element and the second wavelength converter, the second wavelength converter not containing the light-absorbing substance.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 8, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Kenji Sugiura
  • Patent number: 9269559
    Abstract: Phosphor-containing coating compositions and methods capable of changing the lumen maintenance characteristics of phosphor-containing coatings and fluorescent lamps that utilize such coatings. Lumen maintenance of a fluorescent lamp can be modified by forming a phosphor-containing coating to contain at least a first phosphor that depreciates during operation of the fluorescent lamp, and forming the phosphor-containing coating to further contain an additive composition in a sufficient amount and sufficiently uniformly distributed in the phosphor-containing coating to inhibit depreciation of the first phosphor during operation of the fluorescent lamp.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: February 23, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jon Bennett Jansma, William Winder Beers, William Erwin Cohen, Fangming Du
  • Patent number: 9252339
    Abstract: Disclosed are a red light-emitting nitride material, a light-emitting part and a light-emitting device comprising the same. The General Formula of the light-emitting material is: Ma(Al,B)bSicNdOe:Eum, Rn, wherein M is at least one of the alkaline earth metal elements Mg, Ca, Sr, Ba and Zn; R is at least one of the rare earth elements Y, La, Ce, Gd and Lu; and 0.9?a<1.1, 0.9?b?1, 1?c?1.5, 2.5<d<5, 0<e<0.1, 0<m<0.05, 0<n<0.1 and 1<c/b<1.5. The light-emitting material can be effectively excited by a radiation light having a wavelength below 500 nm, and then emits a visible red light having a wide spectrum from 500 nm to 780 nm. The light-emitting material of the present disclosure has the characteristics of high light-emitting efficiency, good temperature properties and a wide half-width etc., and the material can be used alone or in combination with other light-emitting materials for making high performance light-emitting devices.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: February 2, 2016
    Assignee: GRIREM ADVANCED MATERIALS CO., LTD.
    Inventors: Yunsheng Hu, Tao He, Huaqiang He, Weidong Zhuang, Ronghui Liu, Yuanhong Liu, Nan Li
  • Patent number: 9182621
    Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit tight of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: November 10, 2015
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Shimon Weiss, Michael C. Schlamp, A. Paul Alivisatos
  • Patent number: 9175819
    Abstract: A light-emitting device includes a light-emitting component. The light-emitting component includes a circuit board, a light-emitting diode which is mounted on and electrically connected to the circuit board, a wavelength-converting shell which covers the light-emitting diode, and a heat conductive layer which is formed on the wavelength-converting shell and which includes graphene.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: November 3, 2015
    Assignee: Genesis Photonics Inc.
    Inventor: Kuan-Chieh Huang
  • Patent number: 9080105
    Abstract: A phosphor material is provided which having the chemical formula is (Ln1-x-y-zCex)3Al5O12-y-zCyNz, wherein Ln is one or more metals selected from Y, La, Pr, Nd, Eu, Gd, Tb, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni and Lu, and 0.01?x?0.3, 0?y?0.3, and 0.001?z?0.3. Before the sintering process with high temperature is performed, the different kinds of nitrogen source or the combination of nitrogen source and carbon source thereof is added into the synthesized phosphor to provide carbon atom (C) and nitrogen atom (N) that is doped into the phosphor material, in which the nitrogen source includes an organic and an inorganic nitrogen compound. The nitrogen source is added in addition to substitute oxygen atom and to perform doping process.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: July 14, 2015
    Assignee: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: Wei-Jen Liu, Pin-Chun Lin
  • Patent number: 9074136
    Abstract: Silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: M2aM3bSicO[a+3(b+x)/2+2c]:xCe3+, yM0, M2 is at least one selected from Ca, Sr, Ba, Mg and at least contains Ca, M3 is Sc, Sc and Y, M0 is one selected from metal nano particles of Ag, Au, Pt, Pd or Cu, wherein 2.8?a?3.2, 1.8?b?2.1, 2.9?c?3.3, 0.01?x?0.2 and 1×10?4?y?1×10?2. Compared to the luminescent materials in the prior art, the said luminescent materials have higher luminous efficiency and more stable performance and structure. The said methods have simple technique and low cost, therefore are appropriate to be used in industry.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: July 7, 2015
    Assignee: Ocean's King Lighting Science & Technology Co., Ltd.
    Inventors: Mingjie Zhou, Wenbo Ma, Qiurong Liao
  • Patent number: 9030088
    Abstract: A fluorescent lamp has an amalgam chamber that is in communication with the interior of the lamp through an exhaust tube. The amalgam chamber is constructed as a three-way junction with the exhaust tube and is formed at a supplementary angle of 180 degree or less with respect to the exhaust tube. The construction of the chamber utilizes the force of gravity to keep the amalgam away from the opening of the exhaust tube leading to the interior of the lamp. The amalgam chamber is capable of effectively retaining the amalgam within the chamber and preventing it from penetrating into the interior of the lamp regardless of mounting direction.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: May 12, 2015
    Inventor: John Yeh
  • Patent number: 9018830
    Abstract: A fluorescent lamp is provided including a phosphor blend comprising less than about 10% by weight rare earth phosphor, based on the total weight of the phosphor composition. This phosphor blend, when coated on a lamp, provides a lamp that exhibits high color rendering index (CRI), of at least 87, while simultaneously achieving low CCT, of less than about 4500K, i.e. of between about 3000K and 4500K. The phosphor system provided includes a non-rare earth strontium red broad band phosphor, a non-rare earth blue broad band halophosphor, and a rare earth-doped green-blue emitting phosphor, more specifically, a combination of SAR and blue-halo non-rare earth phosphors, and less than 20 wt % BAMn phosphor, based on the total weight of the phosphor system.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: April 28, 2015
    Assignee: General Electric Company
    Inventors: Fangming Du, William Winder Beers, Jon Bennett Jansma, William Erwin Cohen
  • Patent number: 8994260
    Abstract: Silicon substrate having (100) crystal orientation can be wet etched to form (111) sharp tip pyramids. The sharp tip pyramids can be used to fabricate electrodes for flat panel displays, such as a plasma display panel or a field emission display.
    Type: Grant
    Filed: October 5, 2013
    Date of Patent: March 31, 2015
    Inventors: Srinivas H. Kumar, Ananda H. Kumar, Tue Nguyen
  • Patent number: 8994288
    Abstract: A pulse-excited mercury-free lamp system, and method of sustaining the emission of light emission from such a lamp, is provided. The system includes a light-transmissive envelope having an inner surface and a phosphor layer coated thereon. A discharge-sustaining gaseous mixture of a noble gas, at a low pressure, and a metal halide, is retained inside the light-transmissive envelope. An electrical system provides a plurality of pulses to the discharge-sustaining gaseous mixture, resulting in a discharge, which causes the lamp system to emit light. The emission of light is maintained by turning the discharge on during a pulse width of each pulse in the plurality of pulses and by turning the discharge off during a remainder of each period in the plurality of pulses. Particularly in systems where the metal halide is indium-based, this maintains an efficient emission of light without the use of mercury.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: March 31, 2015
    Assignee: OSRAM SYLVANIA Inc.
    Inventor: Philip E. Moskowitz
  • Patent number: 8975810
    Abstract: Described herein is a mercury sample that has an isotopic composition that differs from the naturally occurring distribution of isotopes. In various configurations of an isotopically tailored mercury sample, the fraction of one or more isotopes is increased or decreased with respect to the natural fraction(s). A example of a lighting device comprises an envelope, a buffer gas enclosed within the envelope, a isotopically tailored sample of mercury vapor, and a current injection mechanism configured to excite the mercury vapor to emit light. In various configurations, the lighting device emits radiation at a wavelength of 254 nm and/or at a wavelength of 185 nm. In various configurations, the lighting device envelope includes a fluorescent coating that is excited by ultraviolet (UV) light emitted by the mercury vapor. In various configurations, the lighting device provides improved efficiency as compared to lamps employing mercury with a naturally occurring isotope distribution.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 10, 2015
    Assignee: Board of Regents, The University of Texas System
    Inventors: Mark G. Raizen, James E. Lawler
  • Publication number: 20150054399
    Abstract: Coating systems suitable for use in fluorescent lamps, particularly as scattering agents within a UV-reflecting coating for the purpose of improving fluorescent lamp luminosity. Such a coating system is provided on a transparent or translucent substrate and includes a phosphor coating and a scattering agent that scatters UV rays. The scattering agent includes an inorganic powder present in a separate UV-reflecting layer adjacent the phosphor coating and/or dispersed in the phosphor coating so that the scattered UV rays are absorbed by the phosphor coating and cause the phosphor coating to emit visible light. The inorganic powder exhibits low or no absorption to UV rays having wavelengths of 185 nm and 254 nm and is not reactive with mercury.
    Type: Application
    Filed: December 23, 2013
    Publication date: February 26, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Fangming DU, Alok Mani SRIVASTAVA, William Winder BEERS, William Erwin COHEN
  • Patent number: 8907551
    Abstract: A light emitting device package including a substrate; a light emitting device on the substrate; a first heatsink between the substrate and the light emitting device to transfer heat generated from the light emitting device; a second heatsink disposed below the first heatsink; and an electrode between the first heat sink and the light emitting device. Further, the substrate is disposed between the first and second heatsinks and is narrower at a position between the first and second heatsinks than at a position not between the first and second heatsinks, a material of the substrate is the same at the position between the first and second heatsinks as not between the first and second heatsinks, and the substrate at the position not between the first and second heatsinks surrounds the first and second heat sinks.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 9, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Bum Chul Cho
  • Publication number: 20140333197
    Abstract: Described herein is a mercury sample that has an isotopic composition that differs from the naturally occurring distribution of isotopes. In various configurations of an isotopically tailored mercury sample, the fraction of one or more isotopes is increased or decreased with respect to the natural fraction(s). A example of a lighting device comprises an envelope, a buffer gas enclosed within the envelope, a isotopically tailored sample of mercury vapor, and a current injection mechanism configured to excite the mercury vapor to emit light. In various configurations, the lighting device emits radiation at a wavelength of 254 nm and/or at a wavelength of 185 nm. In various configurations, the lighting device envelope includes a fluorescent coating that is excited by ultraviolet (UV) light emitted by the mercury vapor. In various configurations, the lighting device provides improved efficiency as compared to lamps employing mercury with a naturally occurring isotope distribution.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 13, 2014
    Applicant: Board of Regents, The University of Texas System
    Inventors: Mark G. Raizen, James E. Lawler
  • Patent number: 8884505
    Abstract: A light emitting device comprises a first conductive semiconductor layer, a plurality of light emitting cells separated on the first conductive semiconductor layer, a phosphor layer on at least one of the light emitting cells, and a plurality of second electrodes electrically connected to the light emitting cells.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: November 11, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Sang Youl Lee
  • Patent number: 8883528
    Abstract: A method of fabricating a light emitting device comprises: mounting a light emitting diode chip in a package; heating the light emitting diode chip package assembly to a pre-selected temperature; and dispensing a pre-selected volume of a mixture of at least one phosphor and a light transmissive thermosetting material (silicone, epoxy) on a surface of the chip. The pre-selected volume and temperature are selected such that the phosphor/material mixture flows over the entire light emitting surface of the chip before curing. In an alternative method, using a light transmissive UV curable material such as an epoxy, the phosphor/material mixture is irradiated with UV radiation after a pre-selected time to cure the material. The pre-selected volume and pre-selected time are selected such that the phosphor/material mixture flows over at least the light emitting surface of the chip before curing.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: November 11, 2014
    Assignee: Intematix Corporation
    Inventors: Yi-Qun Li, Yi Dong