Soraa, Inc.

Philips Lumileds Lighting Company LLC

Lumileds Lighting U.s., LLC

Korrus, Inc.

Lumileds LLC

Ecosense Lighting, Inc.

Sorra, Inc.

Troy A Trottier

Michael Ragan Krames

Aurelien J F David

Frank Michael Steranka

Gerd O Mueller

Regina B Mueller-Mach

Christopher Haydn Lowery

Arpan Chakraborty

Michael David Camras

John Julian Uebbing

Robert C Taber

Wayne L Snyder

Douglas W Pocius

Rafael Ignacio Aldaz

Gloria E Hofler

Kevin Huang

William D Houck, Ii

William Houck

Nathan Fredrick Gardner

Yu-Chen Shen

James Chinmo Kim

Jonathan J Wierer, Jr

Matthijs Hendrik Keuper

Seshasayee S Ankireddi

Rajarshi Saha

Rohit Modi

An optical device includes a light source with at least two radiation sources, and at least two layers of wavelength-modifying materials excited by the radiation sources that emit radiation in at least two predetermined wavelengths. Embodiments include a first plurality of n radiation sources configured to emit radiation at a first wavelength. The first plurality of radiation sources are in proximity to a second plurality of m of radiation sources configured to emit radiation at a second wavelength, the second wavelength being shorter than the first wavelength. The ratio between m and n is predetermined. The disclosed optical device also comprises at least two wavelength converting layers such that a first wavelength converting layer is configured to absorb a portion of radiation emitted by the second radiation sources, and a second wavelength converting layer configured to absorb a portion of radiation emitted by the second radiation sources.

System and method for providing color light sources in proximity to predetermined wavelength conversion structures

LED lamp systems having improved light quality are disclosed. The lamps emit more than 500 lm and more than 2% of the power in the spectral power distribution is emitted within a wavelength range from about 390 nm to about 430 nm.

LED lamps with improved quality of light

An LED pump light with multiple phosphors is described. LEDs emitting radiation at violet and/or ultraviolet wavelengths are used to pump phosphor materials that emit other colors. The LEDs operating in different wavelength ranges are arranged to reduce light re-absorption and improve light output efficiency.

System and method for selected pump LEDs with multiple phosphors

Small LED sources with high brightness and high efficiency apparatus including the small LED sources and methods of using the small LED sources are disclosed.

Small LED source with high brightness and high efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

Light emitting devices with optical elements and bonding layers

Techniques for fabricating and using arrays of violet-emitting LEDs coated with densely-packed-luminescent-material layers together with apparatus and method embodiments thereto are disclosed.

Dense-luminescent-materials-coated violet LEDs

Growing community of inventors

Fremont, CA, United States of America

Troy A Trottier