Plural Patents (Class 313/487)
  • Patent number: 10665576
    Abstract: Provided is an optically transparent plate having a structure where an LED die is directly mounted on an optically transparent substrate, and light extraction efficiency is improved. The optically transparent plate comprises, an optically transparent substrate, a wiring pattern placed on either of a surface on the upper side and a surface on the underside of the optically transparent substrate, or on both of the surfaces, and the LED die bonded to the wiring pattern. A reflective layer is placed on the other side, of the surface of the optically transparent substrate on which the LED die is mounted. At least a part of the wiring pattern and at least a part of the reflective layer comprise a conductive material obtained by sintering conductive particles.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: May 26, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Reiki Tada, Akihiko Hanya
  • Patent number: 10630056
    Abstract: An emissive Solid State Imager (SSI) comprised of a spatial array of digitally addressable multicolor micro pixels. The imager efficiently produces white light by means of a photonic layer excited by a nanophosphors nanoparticle structure in a pixel element comprising an optical confinement cavity which may include a micro lens array for directional modulation of the emitted light or an RGB filter for color output. The light generated is emitted via a plurality of vertical optical waveguides that extract and collimate the light.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 21, 2020
    Assignee: Ostendo Technologies, Inc.
    Inventor: Hussein S. El-Ghoroury
  • Patent number: 10485183
    Abstract: A lighting fixture for facilitating plant growth and a light emitting component. The fixture includes a single light emission source LED device which provides at least two emission peaks in the wavelength range of 300-800 nm and at least one of the emission peaks has Full Width of Half Maximum (FWHM) at least 50 nm or higher. The emission peaks of the LED match well with a plant photosynthesis response spectrum and is therefore particularly suitable for high efficiency artificial lighting.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: November 26, 2019
    Assignee: VALOYA OY
    Inventor: Lars Aikala
  • Patent number: 10345238
    Abstract: The white light spotlight for luminescence (e.g.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: July 9, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Patent number: 10196278
    Abstract: Provided is an aluminate fluorescent material having a composition represented by the formula X1aMgbMncAldOa+b+c+1.5d, in which X1 is at least one element selected from the group consisting of Ba, Sr; and Ca, a, b, c, and d satisfy 0.5?a?1.0, 0.0?b<0.4, 0.3?c?0.7, 8.5?d?13.0, and 9.0?b+c+d?14.0.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 5, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Kazuya Nishimata, Shoji Hosokawa, Tomokazu Yoshida
  • Patent number: 10066162
    Abstract: A phosphor blend is described wherein the blend consists of a red-emitting rare earth phosphor, a green-emitting rare earth phosphor, and a blue-emitting rare earth phosphor wherein the 50% size of the phosphors is between about 12 to 15 ?m. The phosphor blend is incorporated into a fluorescent lamp having an increased efficacy. A dual layer coating may be used to provide an additional increase in efficacy.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: September 4, 2018
    Assignee: LEDVANCE LLC
    Inventors: Arunava Dutta, Paul Salvi, Carissa Mercer
  • Patent number: 10008641
    Abstract: Disclosed are a phosphor composition and a light emitting apparatus including the same. The phosphor composition has a compositional formula of AzCxO12:RE, wherein the z is 0?z?3, the x is 0?x?5, the A includes at least one selected from the group consisting of Y, Sc, Gd and Lu, the C includes at least one selected from the group consisting of B, Al and Ga, and the RE includes at least one selected from the group consisting of Eu, Ce, Sm, Yb, Dy, Gd, Tm and Lu. The light emitting apparatus includes the phosphor composition.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: June 26, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Ji Wook Moon, Hyun Goo Kang, Ji Hye Kim, Sun Young Park, Ki Ho Hong
  • Patent number: 9995867
    Abstract: The present disclosure provides a light source, a backlight module and a display apparatus. The light source includes: a light emitting diode chip; and a fluorescent powder layer arranged to face towards the light emitting diode chip and configured to receive a first light emitted from the light emitting diode chip and to emit a second light with a wavelength different from that of the first light, wherein the light emitting diode chip and the fluorescent powder layer are moveable with respect to each other such that quantity of fluorescent powder in the fluorescent powder layer excited by the light emitted from the light emitting diode chip increases or decreases. In the above solution, the light emitting diode chip and the fluorescent powder layer are movable with respect to each other, so as to adjust color temperature of backlight conveniently.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: June 12, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zezhou Yang, Qing Liu
  • Patent number: 9987499
    Abstract: The invention relates to an UV radiation device, comprising an LED comprising a nitridic material which is arranged to emit first UV radiation in a wavelength range of 200 nm-300 nm and a luminescent material doped with at least one of the following activators selected out of the group Eu2+, Ce3+, Pr3+, Nd3+, Gd3+, Tm3+, Sb3+, Tl+, Pb2+ and Bi3+, wherein the luminescent material is configured to convert at least a part of the primary UV radiation into secondary UV radiation, the primary UV radiation and the secondary UV radiation having a different spectral distribution.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: June 5, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Daiyu Hayashi, Jianghong Yu, Georg Greuel, Thomas Jüstel, Cornelis Reinder Reinder Ronda
  • Patent number: 9982191
    Abstract: Phosphate particulates of at least one rare-earth metal (Ln), with Ln being at least one rare-earth metal selected from among cerium and terbium and optionally lanthanum are in the form of a suspension in a liquid phase of primary isotropic monocrystalline monazite particles having an average size of at least 25 nm and agglomerated into secondary particles having an average size of at most 400 nm; useful luminophores are produced from such phosphate particulates.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: May 29, 2018
    Assignee: Rhodia Operations
    Inventors: Valérie Buissette, Thierry Le-Mercier, Laurent Thiers
  • Patent number: 9978725
    Abstract: Provided is an LED lamp using a nano-scale LED electrode assembly. The LED lamp using the nano-scale LED electrode assembly may solve limitations in which, when a nano-scale LED device according to the related art stands up and is three-dimensionally coupled to an electrode, it is difficult to allow the nano-scale LED device to stand up, and when the nano-scale LED devices are coupled to one-to-one correspond to electrodes different from each other, product quality is deteriorated. Thus, the nano-scale LED device having a nano unit may be connected to the two electrodes different from each other without causing defects, and light extraction efficiency may be improved due to the directivity of the nano-scale LED devices connected to the electrodes.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: May 22, 2018
    Assignee: PSI CO., LTD.
    Inventor: Young Rag Do
  • Patent number: 9966507
    Abstract: Embodiments of the invention include a wavelength-converting material defined by AE3?x1?y+zRE3?x2+y?z[Si9?wAlw(N1?yCy)[4](N16?z?wOz+w)[2]]Eux1,Cex2, where AE=Ca, Sr, Ba; RE=Y, Lu, La, Sc; 0?x1?0.18; 0?x2?0.2; x1+x2>0; 0?y?1; 0?z?3; 0?w?3.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 8, 2018
    Assignee: Lumileds Holding B.V.
    Inventor: Peter Schmidt
  • Patent number: 9927097
    Abstract: Disclosed herein is a device which inactivates microorganisms. The device includes a light emitter and at least one light-converting material arranged to convert at least a portion of light from the light emitter. Any light emitted from the light emitter and converted light emitted from the at least one light-converting material mixes to form a combined light, the combined light having a proportion of spectral energy measured in an approximately 380 nm to approximately 420 nm range of greater than approximately 20 percent. In another embodiment, the device includes a light emitter configured to emit light with wavelengths in a range of 380 to 420 nm, and at least one light-converting material including at least one optical brightener and configured to emit a second light. The first light exiting the device and the second light exiting the device mix to form a combined light, the combined light being white.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 27, 2018
    Assignee: Vital Vio Inc.
    Inventors: Jorel Lalicki, Robert Barron, James W Peterson
  • Patent number: 9865450
    Abstract: In different embodiments, a low-pressure discharge lamp (1) is provided. The low-pressure discharge lamp has a discharge vessel (2) and a coating structure (7). The coating structure is formed on an inner face of the discharge vessel (2). The coating structure (7) has first fluorescent particles (34) which have at least one fluorescent substance that emits red light and the average particle size of which ranges from 0.5 ?m to 1.9 ?m, second fluorescent particles (36) which have at least one fluorescent substance that emits green light and the average particle size of which ranges from 0.6 ?m to 2.8 ?m or from 1 ?m to 4 ?m, and third fluorescent particles (38) which have at least one fluorescent substance that emits blue light and the average particle size of which ranges from 1 ?m to 4 ?m.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: January 9, 2018
    Assignee: LEDVANCE GmbH
    Inventors: Armin Konrad, Renate Hirrle, Markus Schönheits, Alexander Bothe, Frauke Philipp, Thomas Huckenbeck
  • Patent number: 9763430
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: September 19, 2017
    Assignee: National University of Singapore
    Inventors: Zhiyuan Gong, Jiangyan He, Bensheng Ju, Toong Jin Lam, Yanfei Xu, Tie Yan
  • Patent number: 9732943
    Abstract: The lighting device (11) has at least one light generation device (12) for generating a primary light (P), a first luminophore (16) for converting the wavelength of the primary light (P) to a first secondary light (S1), and a second luminophore (20) for converting the wavelength of the primary light (P) to a second secondary light (S2), the first luminophore (16) being located on a movable support (15), which is provided in order to alternatively move the first luminophore into and out of a beam path of the primary light (P), and the second luminophore being located on a stationary support (21). The invention also relates to a method for generating wavelength-converted secondary light from primary light with alternating irradiation of a first luminophore located on a movable support and of a second luminophore located on a stationary support by the primary light.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: August 15, 2017
    Assignee: OSRAM GmbH
    Inventors: Oliver Mehl, Holger Laabs, Josef Kroell
  • Patent number: 9716212
    Abstract: A light emitting device including a light emitting element that has a peak light emission wavelength of from 400 nm to 455 nm, a first fluorescent material that has a peak fluorescence wavelength in the range of from 650 nm to 670 nm, and a second fluorescent material that has a peak fluorescence wavelength in the range of from 520 nm to 550 nm, wherein the light emitting device exhibits a light emission spectrum with an average light emission strength of 30% or less in the range of from 600 nm to 620 nm, when the maximum light emission strength in the range of from 520 nm to 550 nm is taken as 100%.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 25, 2017
    Assignee: NICHIA CORPORATION
    Inventor: Shoji Hosokawa
  • Patent number: 9698313
    Abstract: A light emitting assembly comprising a solid state device coupleable with a power supply constructed and arranged to power the solid state device to emit from the solid state device a first, relatively shorter wavelength radiation, and a down-converting luminophoric medium arranged in receiving relationship to said first, relatively shorter wavelength radiation, and which in exposure to said first, relatively shorter wavelength radiation, is excited to responsively emit second, relatively longer wavelength radiation. In a specific embodiment, monochromatic blue or UV light output from a light-emitting diode is down-converted to white light by packaging the diode with fluorescent organic and/or inorganic fluorescers and phosphors in a polymeric matrix.
    Type: Grant
    Filed: June 1, 2008
    Date of Patent: July 4, 2017
    Assignee: CREE, INC.
    Inventors: Bruce Baretz, Michael A. Tischler
  • Patent number: 9688910
    Abstract: A conversion element, a component and a method for producing the component are disclosed. In an embodiment the conversion element includes a phosphor configured to convert electromagnetic primary radiation into electromagnetic secondary radiation and a glass composition as matrix material in which the phosphor is embedded. The glass composition has the following chemical composition: at least one tellurium oxide with a proportion of 65 mole % as a minimum and 90 mole % as a maximum, R1O with a proportion of between 0 mole % and 20 mole %, at least one M12O with a proportion of between 5 mole % and 25 mole %, at least one R22O3 with a proportion of between 1 mole % and 3 mole %, M2O2 with a proportion of between 0 mole % and 2 mole %, and R32O5 with a proportion of between 0 mole % and 6 mole %.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 27, 2017
    Assignee: OSRAM GmbH
    Inventors: Angela Eberhardt, Christina Wille
  • Patent number: 9647181
    Abstract: Provided is a light emitting device in which with the general color rendering index Ra and the special color rendering index R9 maintained at high numeric values, the light emission efficiency is prevented from being reduced as much as possible, and the high color rendering and the high efficiency are achieved so as to be usable for general lighting usage. The device includes at least one light emitting element 6 emitting a light having a peak emission wavelength in a near-ultraviolet to blue region, and a phosphor layer 5 containing a green phosphor excited by a primary light emitted from the light emitting element 6 and emitting a light having a peak emission wavelength in a green region, a first red phosphor excited by the primary light and emitting a light having a peak emission wavelength in a red region, and a second red phosphor exited by the primary light and emitting a light having a peak emission wavelength different from that of the first red phosphor in the red region.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: May 9, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Shinya Ishizaki
  • Patent number: 9499096
    Abstract: A vehicle reading lamp is provided. The vehicle reading lamp includes an outer lens and a first surface and a second surface positioned behind the outer lens. A first photoluminescent structure is coupled to the first surface and a second photoluminescent structure is coupled to the second surface. A first light source is included for exciting the first photoluminescent structure and a second light source is included for exciting the second photoluminescent structure.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: November 22, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Stuart C. Salter, Mahendra Somasara Dassanayake
  • Patent number: 9444021
    Abstract: The folding along the disposed direction of wiring patterns is prevented. Concave-convex shapes in a plan view for preventing the folding of a device as step portions in a plan view are provided on opposing sides of two conductive regions. A front edge side 3a1 of a convex shape in a plan view of a Cu foil layer 3a, which is one of the two conductive regions, is disposed to enter into a concave portion (on the side of a bottom side 3b2) of a concave shape in a plan view of a Cu foil layer 3b, which is the other conductive region, to prevent the folding along the disposed direction of wiring patterns.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: September 13, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuhsuke Fujita, Kenichi Akamatsu
  • Patent number: 9435524
    Abstract: Liquid cooled LED systems are disclosed. Embodiments of the invention provide an LED lighting system in which the LED devices are cooled by circulating liquid or fluid. In example embodiments, a flow return member provides a way for a fluid medium to enter and exit an envelope containing the LED devices. An additional cooling mechanism, such as a radiator or thermoelectric cooler can be provided. The optically transmissive fluid medium can be, for example, oil or a fluorinated or halogenated liquid or gel, and can optionally provide index matching. The fluid medium can optionally include a phase change material in order to enhance cooling. In some embodiments, a pump is used to circulate the fluid medium. However, the optical envelope and/or the flow return member could also be oriented so that the fluid medium circulates by gravity and/or temperature difference.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: September 6, 2016
    Assignee: Cree, Inc.
    Inventor: Praneet Athalye
  • Patent number: 9351371
    Abstract: Provided is a light emitting device in which with the general color rendering index Ra and the special color rendering index R9 maintained at high numeric values, the light emission efficiency is prevented from being reduced as much as possible, and the high color rendering and the high efficiency are achieved so as to be usable for general lighting usage. The device includes at least one light emitting element 6 emitting a light having a peak emission wavelength in a near-ultraviolet to blue region, and a phosphor layer 5 containing a green phosphor excited by a primary light emitted from the light emitting element 6 and emitting a light having a peak emission wavelength in a green region, a first red phosphor excited by the primary light and emitting a light having a peak emission wavelength in a red region, and a second red phosphor exited by the primary light and emitting a light having a peak emission wavelength different from that of the first red phosphor in the red region.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: May 24, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Shinya Ishizaki
  • Patent number: 9313360
    Abstract: Certain methods and systems are described for encoding data in an image. According to an example, a set of metamers under a first set of conditions may be determined that vary under a second set of conditions. These may be used to generate a set of color mappings for a sampled color value, each color mapping being used for a different data value in the data. As such the data values may be detectable when the image is observed under the second set of conditions but not detectable when the image is observed under the first set of conditions.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 12, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Peter Morovic, Jan Morovic, Peter J. Klammer, James William Stasiak
  • Patent number: 9293662
    Abstract: [Problem] To provide a chip-on-board light emitting device and a method for manufacturing the same such that even though the light emitting device is a chip-on-board light emitting device, it is possible to improve color rendering thereof without excessively reducing the amount of light emission and without installing special circuit patterns or performing current control. [Solution] A chip-on-board light emitting device in which a plurality of LED elements are mounted directly on a package substrate includes a circuit pattern formed on the package substrate, the circuit pattern including a plurality of mounting sections on which the plurality of LED elements are mounted and an anode electrode and cathode electrode pair.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: March 22, 2016
    Assignee: DE L ASSOCIATES INC.
    Inventor: Yuji Imai
  • Patent number: 9219203
    Abstract: A light emitting device (1) of the present invention is a light emitting device including a light emitting section (3) provided on a substrate (2), light storing phosphors (7) being provided on or above at least a part of the substrate (2). It is therefore possible to provide a planar light emitting device having a light storage function.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: December 22, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Toshio Hata, Shinya Ishizaki, Makoto Matsuda
  • Patent number: 9166118
    Abstract: A light emitting apparatus with a combination of a plurality of LED chips and a phosphor layer is provided and can be configured to significantly reduce variations in chromaticity and luminance. The plurality of semiconductor light emitting devices (LED chips) are disposed with a gap therebetween, and the phosphor layer is formed on the upper surface thereof to bridge over the gaps between the LED chips. The phosphor layer may be uniform in thickness, but can be less in thickness over the gaps between the LED chips than on the upper surface of the LED chips. The phosphor layer can be continuously formed on the upper surface of the array of the chips with no phosphor layer present in between the chips. This configuration allows for reducing variations in luminance and chromaticity which may result from the gaps or the phosphor layer present in between the gaps.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: October 20, 2015
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Shuichi Ajiki, Yasuyuki Kawakami, Tsutomu Akagi, Mitsunori Harada
  • Patent number: 9142397
    Abstract: Described are methods and apparatus for providing fluorescent lamps having a two-layer phosphor coating that includes a base coating and a top coating that economically provides a high color rendering index (CRI) of at least 87 with improved brightness. In an embodiment, a low-pressure discharge lamp includes a light transmissive envelope having a basecoat phosphor layer disposed on an inner surface, wherein the basecoat phosphor layer includes less than ten percent weight of a rare earth phosphor. Also included is a topcoat phosphor layer on a surface of the base coat phosphor layer that includes a blend of at least red, green, green-blue and blue emitting rare earth phosphors, and a fill gas composition within the light transmissive envelope.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: September 22, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Fangming Du, Heidi M. Anderson, William Erwin Cohen, Stephen Lloyd Killion, Adam Jason Burns
  • Patent number: 9133392
    Abstract: A material, comprising a garnet having the composition represented by the formula A3-xB5O12:Dx and a barium-containing oxide. In the garnet A3-xB5O12:Dx, A is selected from lutetium, yttrium, gadolinium, terbium, scandium, another rare earth metal or mixtures thereof. B is selected from aluminum, scandium, gallium, indium, boron or mixtures thereof. D is at least one dopant selected from chromium, manganese and rare earth metals, particularly cerium, praseodymium or gadolinium. The dopant is present with x is 0?x?2.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: September 15, 2015
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Madis Raukas, Karl Krister Bergenek, George C. Wei, Nathan M. Zink, Stefan Lange
  • Patent number: 9130140
    Abstract: A light-emitting device includes a thermally conductive substrate, a wiring electrode formed on the thermally conductive substrate, a resist formed on the wiring electrode except a terminal thereof, and a light-emitting element that is disposed in an element mounting region of the thermally conductive substrate and electrically connected to the terminal of the wiring electrode. A heat dissipation hole is formed in a region of the resist outside the element mounting region so as to expose a surface of the thermally conductive substrate.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: September 8, 2015
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Yosuke Tsuchiya, Hiroyuki Tajima, Shota Shimonishi, Akira Sengoku
  • Patent number: 9125298
    Abstract: An electronic device may have a glass housing structures. The glass housing structures may be used to cover a display and other internal electronic device components. The glass housing structure may have multiple glass pieces that are joined using a glass fusing process. A peripheral glass member may be fused along the edge of a planar glass member to enhance the thickness of the edge. A rounded edge feature may be formed by machining the thickened edge. Raised fused glass features may surround openings in the planar glass member. Multiple planar glass members may be fused together to form a five-sided box in which electronic components may be mounted. Raised support structure ribs may be formed by fusing glass structures to a planar glass member. Opaque masking material and colored glass may be used to create portions of the glass housing structures that hide internal device components from view.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: September 1, 2015
    Assignee: Apple Inc.
    Inventors: Peter N. Russell-Clarke, Michael K. Pilliod, Jonathan P. Ive
  • Patent number: 9117650
    Abstract: A coating system for a fluorescent lamp, and fluorescent lamps provided therewith. The coating system includes a phosphor-containing coating containing a mixture of phosphors that contain less than 10% weight rare earth phosphors. The phosphor-containing coating emits visible light having a color rendering index of at least 87 when excited by UV radiation.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 25, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Fangming Du, Brett R. Bradley, William Erwin Cohen, Nathaniel Jon Farkas, Clark David Nelson
  • Patent number: 9011717
    Abstract: Phosphor compositions, white phosphor compositions, methods of making white phosphor compositions, tinted white phosphor compositions, methods of making tinted white phosphor compositions, LEDs, methods of making LEDs, light bulb structures, paints including phosphor compositions, polymer compositions including phosphor compositions, ceramics including phosphor compositions, and the like are provided.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 21, 2015
    Assignee: University of Georgia Research Foundation, Inc.
    Inventors: William M. Yen, Zhiyi He, Sergei Basun, Xiao-jun Wang, Gennaro J. Gama
  • Patent number: 8994261
    Abstract: A lamp having improved color quality scale is provided. The lamp has a light-transmissive envelope and a phosphor layer comprising a first phosphor and a second phosphor wherein the first phosphor has an emission band with a maximum between 590 nm and 670 nm and the second phosphor has an emission band with a maximum between 520 nm and 570 nm. The light generated by the phosphor layer, when the lamp is energized, has delta chroma values for fifteen color samples of the color quality scale within select parameters. The delta chroma values are measured in the CIE LAB color space.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: March 31, 2015
    Assignee: General Electric Company
    Inventors: William W. Beers, Laszlo Balazs, Istvan Bakk
  • Patent number: 8987984
    Abstract: A fluorescent lamp includes a phosphor composition comprising: Y2O3:Eu3+ (YEO); at least one of LaPO4:Ce3+, Tb3+ (LAP), MgAl11O19:Ce3+, Tb3+ (CAT) or GdMgB5O10:Ce3+, Tb3+ (CBT); a special BAMn phosphor, (Ba,Sr,Ca)(Mg1-xMnx)Al10O17:Eu2+, with a specific amount of Mn (x) as disclosed herein, and optionally halophosphor, with the proviso that there is no BaMgAl10O17:Eu2+ (BAM).
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventors: William Erwin Cohen, Fangming Du, William Beers, Jon Bennett Jansma
  • Patent number: 8981639
    Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: March 17, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masatsugu Masuda, Kenji Terashima
  • Publication number: 20150061491
    Abstract: A mercury-free low-pressure lamp having a bulb is provided. The bulb includes an emissive material and one or more phosphors. The emissive material includes at least one of an alkali metal or an alkaline earth metal, wherein when the bulb is in a non-operational state, the emissive material condenses into a liquid or solid, and when the bulb is in an operational state the emissive material forms an emitter, the emitter in combination with one or more gases generate photons when excited by an electrical discharge. The one or more phosphors are configured to convert at least a portion of the photons to other visible wavelengths.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Applicant: Elwha LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare, Tony S. Pan, Thomas A. Weaver, Lowell L. Wood, JR.
  • Patent number: 8941292
    Abstract: Disclosed herein are low pressure discharge lamps having enhanced chroma and color preference. improved color quality scale, especially at elevated color temperatures, is provided. The light generated by the light-emitting elements of the lamp, when the lamp is energized, has Color Preference Scale values, as well as delta chroma values for fifteen color samples of the Color Quality Scale, within select parameters.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: January 27, 2015
    Assignee: General Electric Company
    Inventors: Katalin Tóth, István Károly Deme, Attila Kulcsár, Gáza István Szeghy
  • Patent number: 8866372
    Abstract: Mercury vapor discharge fluorescent lamps are provided. The lamp can include a lamp envelope enclosing a discharge space and having an inner surface. First and second electrodes can be positioned on the lamp, such as on opposite ends of the lamp envelope. An ionizable medium that includes mercury and an inert gas can be within said lamp envelope. A phosphor layer can be on the inner surface of the lamp envelope. The phosphor layer generally includes a phosphor blend of a calcium halophosphor, a blue phosphor having an emission peak at about 440 nm to about 490 nm, a blue-green phosphor having an emission peak at about 475 nm to about 530 nm, and a red phosphor having an emission peak at about 600 nm to about 650 nm.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: October 21, 2014
    Assignee: General Electric Company
    Inventors: William Winder Beers, Jon Bennett Jansma, Fangming Du, William Erwin Cohen, Alok Mani Srivastava, Samuel Joseph Camardello, Holly Ann Comanzo
  • Publication number: 20140306598
    Abstract: A coating system for a fluorescent lamp, and fluorescent lamps provided therewith. The coating system includes a phosphor-containing coating containing a mixture of phosphors that contain less than 10% weight rare earth phosphors. The phosphor-containing coating emits visible light having a color rendering index of at least 87 when excited by UV radiation.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Fangming DU, Brett R. BRADLEY, William Erwin COHEN, Nathaniel Jon FARKAS, Clark David NELSON
  • Publication number: 20140239806
    Abstract: A mercury-free low-pressure lamp having a bulb is provided. The bulb includes an emissive material and one or more phosphors. The emissive material includes at least one of an alkali metal or an alkaline earth metal, wherein when the bulb is in a non-operational state, the emissive material condenses into a liquid or solid, and when the bulb is in an operational state the emissive material forms an emitter, the emitter in combination with one or more gases generate photons when excited by an electrical discharge. The one or more phosphors are configured to convert at least a portion of the photons to other visible wavelengths.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: Elwha LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare, Tony S. Pan, Thomas Allan Weaver, Lowell L. Wood,, Jr.
  • Patent number: 8791630
    Abstract: A light emitting section emits fluorescence upon receiving exciting light emitted from a laser element. The light emitting section includes a plurality of fluorescent material particles made from a single type of fluorescent material or several types of fluorescent materials, the plurality of fluorescent material particles being accumulated on a metal substrate to form a layer of the plurality of fluorescent material particles. Each of the plurality of fluorescent material particles has a surface coated with a coating layer. The coating layer forms an uneven shape of a surface of the light emitting section.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: July 29, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yosuke Maemura, Yoshiyuki Takahira
  • Patent number: 8771547
    Abstract: Disclosed herein is a novel family of oxycarbonitride phosphor compositions and light emitting devices incorporating the same. Within the sextant system of M—Al—Si—O—N—C—Ln and quintuplet system of M—Si—O—N—C—Ln (M=alkaline earth element, Ln=rare earth element), the phosphors are composed of either one single crystalline phase or two crystalline phases with high chemical and thermal stability. In certain embodiments, the disclosed phosphor of silicon oxycarbonitrides emits green light at wavelength between 530-550 nm. In further embodiments, the disclosed phosphor compositions emit blue-green to yellow light in a wavelength range of 450-650 nm under near-UV and blue light excitation.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 8, 2014
    Assignee: Lightscape Materials, Inc.
    Inventors: Yuanqiang Li, Michael Dennis Romanelli, Yongchi Tian
  • Patent number: 8773009
    Abstract: An illumination apparatus includes an LED light source including one or more LEDs. A spectrum of lights emitted from the LED light source has a first peak wavelength in a wavelength band ranging from 380 nm to 470 nm and a second peak wavelength in a wavelength band ranging from 500 nm to 700 nm, and a half width of the first peak wavelength is set to be equal to or less than 20 nm.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Shinichi Aoki, Makoto Yamada, Masaki Ishiwata
  • Patent number: 8747697
    Abstract: Provided herein are phosphor compositions that include a YAG phosphor that is substituted with gallium, such as YaCebAlcGadOz, wherein a, b, c, d and z are positive numbers. Also provided are solid state light emitting devices that include a YAG phosphor that is substituted with gallium.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: June 10, 2014
    Assignee: Cree, Inc.
    Inventors: David Clatterbuck, Brian Thomas Collins
  • Patent number: 8729788
    Abstract: A light-emitting device includes a light-emitting element for emitting primary light, and a wavelength conversion unit for absorbing part of the primary light and emitting secondary light having a wavelength longer than that of the primary light, wherein the wavelength conversion unit includes plural kinds of phosphors having light absorption characteristics different from each other, and then at least one kind of phosphor among the plural kinds of phosphors has an absorption characteristic that can absorb the secondary light emitted from at least another kind of phosphor among the plural kinds of phosphors.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: May 20, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masatsugu Masuda, Masaaki Katoh, Tsukasa Inoguchi
  • Patent number: 8729786
    Abstract: The invention relates to an illuminant mixture for a discharge lamp (1) with a first and at least one second illuminant composition, said first illuminant composition having an emission spectrum in the green to yellow spectral range and having a first illuminant compound, devoid of Tb and designed to absorb the UV radiation emitted by an Hg source. The invention also relates to a discharge lamp (1) with a discharge vessel (2) and an illuminant layer (12) applied thereto, said layer containing the illuminant mixture according to the invention.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: May 20, 2014
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Frank Jermann, Armin Konrad, Martin Zachau
  • Patent number: 8723403
    Abstract: A light assembly with light-mixing function includes a case having an assembling room defined therein and an assembling opening at a top thereof, the assembling opening communicating with the assembling room, a light-mixing sheet sealing the assembling opening of the case, the light-mixing sheet having at least one array set defined thereon, the array set having a plurality of fillisters uniformly defined on the light-mixing sheet, a volume of mixed chemical compound is entered into each fillister, at least one light source electrically set on a bottom of the assembling room. Under this arrangement, when the light assembly with light-mixing function is turned on, a plurality of light beams from the light source is caged in the mixed chemical compounds of the fillisters; and the mixed chemical compound shifts a wavelength of each of the light beams which are caged in the mixed chemical compounds.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: May 13, 2014
    Assignee: National Central University
    Inventors: Ching-Cherng Sun, Yu-Yu Chang, Chih-Yu Chiu
  • Patent number: 8704438
    Abstract: Disclosed herein are lamps comprising a radiation source and a phosphor blend configured for conversion of radiation, the phosphor blend including at least two different rare earth phosphors, wherein the phosphor blend comprises at least one multimodal rare earth phosphor. Disclosed advantages may include greater lumen output than an identical lamp in which the phosphor blend, at the same loading, does not comprise at least one multimodal rare earth phosphor.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: April 22, 2014
    Assignee: General Electric Company
    Inventors: William Erwin Cohen, William Winder Beers, Fangming Du