Cree Gmbh

Ideal Industries Lighting LLC

Cree Lighting Company

Koninklijke Philips Corporation N.v.

The United States of America As Represented by the Department of Energy

Creeled, Inc.

Cree Lighting USA LLC

Andrews, Peter S.

James Ibbetson

Bernd P Keller

Eric J Tarsa

Michael S Leung

Michael John Bergmann

David T Emerson

Gerald H Negley

Peter Scott Andrews

John Adam Edmond

Ashay Chitnis

Ting Li

Matthew Donofrio

Kevin Haberern

Sten Heikman

Brian Thibeault

David Beardsley Slater, Jr

Zongjie Yuan

Kurt S Wilcox

Nicholas William Medendorp, Jr

Theodore D Lowes

Benjamin A Jacobson

Charles M Swoboda

Thomas Goldthwaite Coleman

Kathleen Marie Doverspike

Amber Christine Abare

Antony Paul Van De Ven

Umesh Kumar Mishra

Norbert Hiller

Jayesh Bharathan

Primit A Parikh

Adam William Saxler

Arpan Chakraborty

Ronan P Le Toquin

Jeffrey Carl Britt

Shuji Nakamura

Steven P DenBaars

Christopher P Hussell

Ihor A Lys

Frederick Marshall Morgan

Kevin Dowling

Nathan R Snell

George R Brandes

William Laird Dungan

Randall Levy Bernard

Tao Tong

Mark Youmans

Ethan Timothy Creasman

Raymond Rosado

Jasper S Cabalu

Nicholas W Medendorp

Claudio Girotto

Amber Christine Salter

Max Batres

Zhimin Jamie Yao

Robert C Glass

Thomas Yuan

Fabian Jean-Daniel Rol

Michael O'Loughlin

Monica Hansen

Ronan Letoquin

Paul Thomas Fini

Daniel Carleton Driscoll

Fan Zhang

Howard Dean Nordby, Jr

Nalini Gupta

Ben Jacobson

Ryan Gresback

Michael Mack

Mark Raffetto

Maryanne Becerra

Yankun Fu

James Seruto

Ashish Ekbote

Ronan P LeToquin

Julio Garceran

Kenneth Lotito

David Clatterbuck

Amruteshwar Hiremath

Ashonita Chavan

Deborah Kircher

Tao Feng Gilbert

Charles Draper

Matthew Jacob-Mitos

Pablo Cantu-Alejandro

Kristi Wong

Thodore Lowes

Zhimin James Yao

Michael Leung

Howard Nordby

David Todd Emerson

Michael John O'loughlin

Zhinmin Jamie Yao

Antony Van De Ven

Fabien Jean-Daniel Rol

Jayesh Bharanthan

Li Ting

David B Slater

A lighting fixture appears as a skylight and is referred to as a skylight fixture. First and second light engines of the fixture provide different color points, peak light intensity angles, far-field light distribution characteristics, and/or circadian stimulus values. A skylight fixture may include a sky-resembling assembly and a plurality of sun-resembling assemblies, with dedicated optical assemblies and/or light sources. A lighting fixture may include multiple waveguides that different extraction feature patterns and/or may be sequentially arranged.

Lighting fixture and methods

A light fixture, e.g., as an artificial skylight, in which light within a region defined by x, y color coordinates (0.37, 0.34), (0.35, 0.38), (0.15, 0.20), and (0.20, 0.14) exits a first light engine, and light within a region defined by coordinates (0.29, 0.32), (0.32, 0.29), (0.41, 0.36), (0.48, 0.39), (0.48, 0.43), (0.40, 0.41), and (0.35, 0.38) exits a second light engine. Also, light fixtures in which a second light engine comprises a sidewall, and light exiting a first light engine passes through space defined by the sidewall; light fixtures in which first and second light engines are able to output light providing different CS values at a luminance; light fixtures in which light incident on a surface of the fixture and cumulative light exiting the fixture have different color points; light fixtures in which light distribution characteristics of light engines differ; and/or other features. The invention also relates to corresponding methods.

Light fixtures and methods

Light emitting diodes are disclosed that utilize multiple conversion materials in the conversion process in order to achieve the desired emission color point. Different embodiments of the present invention can comprise different phosphor types in separate layers on, above or around one or a plurality of LED chips to achieve the desired light conversion. The LEDs can then emit a desired combination of light from the LED chips and conversion material. In some embodiments, conversion materials can be applied as layers of different phosphor types in order of longest emission wavelength phosphor first, followed by shorter emission phosphors in sequence as opposed to applying in a homogeneously mixed phosphor converter. The conversion material layers can be applied as a blanket over the LED chips and the area surrounding the chip, such as the surface of a submount holding the LED chips.

Multi-layer conversion material for down conversion in solid state lighting

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.

Skylight fixture emulating natural exterior light

Circadian light fixtures, and other devices

Skylight Fixture

A light emitting diode (LED) is disclosed comprising a plurality of semiconductor layers with a first contact on the bottom surface of the semiconductor layers and a second contact on the top surface of the semiconductor layer. A coating is included that comprises a cured binder and a conversion material that at least partially covers the semiconductor layers, wherein the second contact extends through the coating and is exposed on the same plane as the top surface of the coating. An electrical signal applied to the first and second contacts is conducted through the coating to the semiconductor layers causing the LED to emit light. In other embodiments first and second contacts are accessible from one side of the LED. A coating is included that comprises a cured binder and a conversion material. The coating at least partially covers the semiconductor layers, with the first and second contacts extending through the coating and exposed on the same plane as a surface of the coating. An electrical signal applied to the first and second contacts is conducted through the coating to the semiconductor layers causing the LED to emit light.

Molded chip fabrication method and apparatus

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.

Solid state lighting device providing spectral power distribution with enhanced perceived brightness

Methods for fabricating a semiconductor devices, and in particular light emitting diodes (LEDS) comprising providing a plurality of semiconductor devices on a substrate and forming a contact on at least some of the semiconductor devices. A containment structure is formed on at least some of the semiconductor devices having a contact with each containment structure defining a deposition area excluding the contact. A coating material is deposited then within the deposition area, with the coating material not covering the contact. A light emitting diode (LED) chip wafer comprising a plurality of LEDs on a substrate wafer with at least some of the LEDs having a contact. A plurality of containment structures are included, each of which is associated with a respective one of the plurality of LEDs. Each of the containment structures at least partially on its respective one of the LEDs and defining a deposition area on its respective one of the LEDs. The deposition area excludes the contact. A coating is included in each of the deposition areas.

Coating method utilizing phosphor containment structure and devices fabricated using same

A light fixture, e.g., as an artificial skylight, in which light within a region defined by x, y color coordinates (0.37, 0.34), (0.35, 0.38), (0.15, 0.20), and (0.20, 0.14) exits a first light engine, and light within a region defined by coordinates (0.29, 0.32), (0.32, 0.29), (0.41, 0.36), (0.48, 0.39), (0.48, 0.43), (0.40, 0.41), and (0.35, 0.38) exits a second light engine. Also, light fixtures in which a second light engine comprises a sidewall, and light exiting a first light engine passes through space defined by the sidewall; light fixtures in which first and second light engines are able to output light providing different CS values at a luminance; light fixtures wherein light incident on a surface of the fixture and cumulative light exiting the fixture have different color points; light fixtures wherein light distribution characteristics of light engines differ; and/or other features. The invention also relates to corresponding methods.

Skylight fixture

This disclosure relates to light emitting devices and methods of manufacture thereof, including side and/or multi-surface light emitting devices. Embodiments according to the present disclosure include the use of a functional layer, which can comprise a stand-off distance with one or more portions of the light emitter to improve the functional layer's stability during further device processing. The functional layer can further comprise winged portions allowing for the coating of the lower side portions of the light emitter to further interact with emitted light and a reflective layer coating on the functional layer to further improve light extraction and light emission uniformity. Methods of manufacture including methods utilizing virtual wafer structures are also disclosed.

Chip with integrated phosphor

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.

Optical waveguide and luminaire incorporating same

Growing community of inventors

Santa Barbara, CA, United States of America

James Ibbetson