公开(公告)号：US20190341531A1

公开(公告)日：2019-11-07

申请号：US15972152

申请日：2018-05-05

Applicant: Cree, Inc.

Inventor： Fan Zhang ,  Ryan Gresback ,  James Ibbetson ,  Bernd Keller ,  Antony Paul Van de Ven

IPC: H01L33/50 ,  H01L33/08

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.

公开(公告)号：US20180252374A1

公开(公告)日：2018-09-06

申请号：US15972176

申请日：2018-05-06

Applicant: Cree, Inc.

Inventor： Bernd P. Keller ,  Theodore D. Lowes ,  Michael Leung ,  Benjamin A. Jacobson ,  Eric Tarsa ,  James Ibbetson ,  Claudio Girotto

IPC: F21S8/00 ,  F21V23/00

CPC classification number: F21S8/006 ,  F21S8/026 ,  F21S19/005 ,  F21V23/003 ,  F21Y2101/00 ,  F21Y2105/16 ,  F21Y2113/13 ,  F21Y2115/10 ,  H05B33/086 ,  H05B33/0872

Abstract: A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.

公开(公告)号：US09823408B2

公开(公告)日：2017-11-21

申请号：US14866373

申请日：2015-09-25

Applicant: Cree, Inc.

Inventor： Zongjie Yuan ,  Kurt S. Wilcox ,  Eric J. Tarsa ,  Fabian Jean-Daniel Rol ,  James Ibbetson ,  Bernd P. Keller ,  Nicholas W. Medendorp, Jr.

IPC: F21V8/00 ,  F21K9/23 ,  F21K9/61 ,  F21Y101/00 ,  F21Y115/10

CPC classification number: G02B6/0046 ,  F21K9/23 ,  F21K9/61 ,  F21Y2101/00 ,  F21Y2115/10 ,  G02B6/0021 ,  G02B6/0028 ,  G02B6/0031 ,  G02B6/0035 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0041 ,  G02B6/0043 ,  G02B6/0058 ,  G02B6/0061 ,  G02B6/0088 ,  G02B6/009

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof. The body of material has a first side, a second side opposite the first side, and a plurality of interior bores extending between the first and second sides each adapted to receive a light emitting diode. Extraction features are disposed on the second side and the extraction features direct light out of at least the first side and at least one extraction feature forms a taper disposed at an outer portion of the body.

公开(公告)号：US09105817B2

公开(公告)日：2015-08-11

申请号：US14209652

申请日：2014-03-13

Applicant: CREE, INC.

Inventor： Michael S Leung ,  Eric J Tarsa ,  James Ibbetson

IPC: H01L27/15 ,  H01L33/50 ,  H01L21/56 ,  H01L23/00

CPC classification number: H01L33/504 ,  H01L21/565 ,  H01L24/96 ,  H01L27/15 ,  H01L33/50 ,  H01L2224/2518 ,  H01L2924/12041 ,  H01L2924/181 ,  H01L2924/1815 ,  H01L2933/0041 ,  H01L2924/00

Abstract: A method and apparatus for coating a plurality of semiconductor devices that is particularly adapted to coating LEDs with a coating material containing conversion particles. One method according to the invention comprises providing a mold with a formation cavity. A plurality of semiconductor devices are mounted within the mold formation cavity and a curable coating material is injected or otherwise introduced into the mold to fill the mold formation cavity and at least partially cover the semiconductor devices. The coating material is cured so that the semiconductor devices are at least partially embedded in the cured coating material. The cured coating material with the embedded semiconductor devices is removed from the formation cavity. The semiconductor devices are separated so that each is at least partially covered by a layer of the cured coating material. One embodiment of an apparatus according to the invention for coating a plurality of semiconductor devices comprises a mold housing having a formation cavity arranged to hold semiconductor devices. The formation cavity is also arranged so that a curable coating material can be injected into and fills the formation cavity to at least partially covering the semiconductor devices.

公开(公告)号：US09076940B2

公开(公告)日：2015-07-07

申请号：US13971547

申请日：2013-08-20

Applicant: CREE, INC.

Inventor： Thomas Yuan ,  Bernd Keller ,  James Ibbetson ,  Eric Tarsa ,  Gerald Negley

IPC: H01L33/00 ,  H01L33/60 ,  H05B33/08 ,  H01L25/075 ,  H01L33/58

CPC classification number: H01L33/60 ,  H01L25/0753 ,  H01L33/58 ,  H01L2224/48247 ,  H01L2224/73265 ,  H01L2924/01019 ,  H01L2924/181 ,  H05B33/0821 ,  H05B33/0857 ,  H01L2224/48091 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

公开(公告)号：US08884510B2

公开(公告)日：2014-11-11

申请号：US14177931

申请日：2014-02-11

Applicant: Cree, Inc.

Inventor： James Ibbetson ,  Peter S. Andrews

IPC: H01L33/50 ,  F21K99/00 ,  H05B33/10

CPC classification number: H01L33/50 ,  F21K9/64 ,  H01L33/501 ,  H01L33/508 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2933/0041 ,  H05B33/10 ,  H01L2924/00014

Abstract: An LED includes a chip having a light emitting surface, and a coating of phosphor-containing material on the light emitting surface. The phosphor-containing material comprises at least two quantities of different phosphor particles and are arranged in a densely packed layer within the coating at the light emitting surface. The densely packed layer of phosphor particles does not extend all the way through the coating.

Abstract translation: LED包括具有发光表面的芯片和在发光表面上的含磷光体材料的涂层。 含荧光体的材料包含至少两种不同的荧光体颗粒，并且布置在发光表面的涂层内的密集堆积层中。 荧光体颗粒的密集堆积层不会一直延伸穿过涂层。

公开(公告)号：US20140211476A1

公开(公告)日：2014-07-31

申请号：US13839949

申请日：2013-03-15

Applicant: Cree, Inc.

Inventor： Zongjie Yuan ,  Kurt S. Wilcox ,  Eric J. Tarsa ,  Fabian Jean-Daniel Rol ,  James Ibbetson ,  Bernd P. Keller

IPC: G02B6/30 ,  F21K99/00 ,  G02B6/34 ,  G02B6/24 ,  G02B6/32

CPC classification number: G02B6/0046 ,  F21K9/23 ,  F21K9/61 ,  F21Y2101/00 ,  F21Y2115/10 ,  G02B6/0021 ,  G02B6/0028 ,  G02B6/0031 ,  G02B6/0035 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0041 ,  G02B6/0043 ,  G02B6/0058 ,  G02B6/0061 ,  G02B6/0088 ,  G02B6/009

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof and including a first side, a second side opposite the first side, a central bore extending between the first and second sides and adapted to receive a light emitting diode, and extraction features on the second side. A light diverter extends into the central bore for diverting light into and generally along the width of the body of material. The extraction features direct light out of the first side and wherein at least one extraction feature has an extraction surface dimension transverse to the thickness that is between about 5% and about 75% the overall thickness of the body of material.

Abstract translation: 光波导包括具有基本上大于其总厚度的宽度的透光材料体，并且包括第一侧，与第一侧相对的第二侧，在第一和第二侧之间延伸的适于接收光的中心孔 发光二极管，第二面提取特征。 光转向器延伸到中心孔中，用于将光转向并且通常沿着材料主体的宽度。 提取功能将光从第一侧引导出来，并且其中至少一个提取特征具有横向于厚度的提取表面尺寸，该材料的材料体的总厚度为约5％至约75％。

公开(公告)号：US20130341653A1

公开(公告)日：2013-12-26

申请号：US13971547

申请日：2013-08-20

Applicant: Cree, Inc.

Inventor： THOMAS YUAN ,  Bernd Keller ,  James Ibbetson ,  Eric Tarsa ,  Gerald Negley

IPC: H01L33/60

CPC classification number: H01L33/60 ,  H01L25/0753 ,  H01L33/58 ,  H01L2224/48247 ,  H01L2224/73265 ,  H01L2924/01019 ,  H01L2924/181 ,  H05B33/0821 ,  H05B33/0857 ,  H01L2224/48091 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

Abstract translation: 一种LED组件，包括安装在基座的平坦表面上的LED芯片的阵列，所述LED芯片能够响应于电信号而发光。 LED芯片包括以不同颜色的光发射的各个组，其中每个组以串联电路互连。 LED芯片中包含一个镜头。 其他实施例可以包括散热结构，其包括与底座一体并且被布置成散发来自LED芯片的热量。

公开(公告)号：US10436969B2

公开(公告)日：2019-10-08

申请号：US13840563

申请日：2013-03-15

Applicant: Cree, Inc.

Inventor： Zongjie Yuan ,  Kurt S. Wilcox ,  Eric J. Tarsa ,  Fabian Jean-Daniel Rol ,  James Ibbetson ,  Bernd P. Keller ,  Nicholas W. Medendorp, Jr.

IPC: G02B6/00 ,  F21V8/00 ,  F21K9/23 ,  F21K9/61 ,  F21Y101/00 ,  F21Y115/10

Abstract: An optical waveguide includes a body of optically transmissive material having a width substantially greater than an overall thickness thereof. The body of material has a first side, a second side opposite the first side, and a plurality of interior bores extending between the first and second sides each adapted to receive a light emitting diode. Extraction features are disposed on the second side and the extraction features direct light out of at least the first side and at least one extraction feature forms a taper disposed at an outer portion of the body.

公开(公告)号：US10416377B2

公开(公告)日：2019-09-17

申请号：US15450578

申请日：2017-03-06

Applicant: Cree, Inc.

Inventor： Claudio Girotto ,  Eric Tarsa ,  Nathan Ray Snell ,  James Ibbetson ,  Mark Youmans ,  Theodore D. Lowes ,  Bernd Keller ,  Ethan Creasman ,  Randall Levy Bernard ,  William L. Dungan

IPC: F21V8/00 ,  F21V23/04 ,  G02B6/12 ,  G02B6/122 ,  F21S6/00 ,  F21Y115/10

Abstract: A luminaire includes a first waveguide having a first primary light emitting surface directed in a first direction and a first secondary light emitting surface directed in a second direction. A second waveguide having a second primary light emitting surface directed in the second direction and a second secondary light emitting surface directed in the first direction. A first plurality of LEDs are optically coupled to the first waveguide and a second plurality of LEDs are optically coupled to the second waveguide. The first and second waveguides are independently operable. The first and second plurality of LEDs may comprise LED groups where each of the LED groups are independently controllable. The light emission pattern and light properties of the emitted light are controllable.