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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10955608 B1

PDFFull Text
Date of Patent:
Mar. 23, 2021

Filed:

Apr. 29, 2019

Circadian-friendly led light sources

Applicant:

Soraa, Inc., Fremont, CA (US);

Inventors:

Michael R. Krames, Mountain View, CA (US);

Aurelien J. F. David, San Francisco, CA (US);

Emil Radkov, Fremont, CA (US);

Willem Smitt, Fremont, CA (US);

Assignee:

ECOSENSE LIGHTING, INC., Los Angeles, CA (US);

Attorney:

FisherBroyles LLP

Primary Examiner:

Anne M Hines

Int. Cl.
CPC ...
G02B 6/00 (2006.01); F21V 8/00 (2006.01); G02F 1/13357 (2006.01); F21S 4/20 (2016.01); F21K 9/23 (2016.01); A61M 21/00 (2006.01); F21V 23/00 (2015.01); F21V 29/74 (2015.01); F21Y 105/10 (2016.01); F21Y 115/10 (2016.01); F21Y 113/13 (2016.01); F21Y 105/18 (2016.01); F21K 9/238 (2016.01); F21W 107/10 (2018.01); H05B 45/20 (2020.01); H05B 47/16 (2020.01); F21W 102/00 (2018.01);
U.S. Cl.
CPC ...
G02B 6/0073 (2013.01); A61M 21/00 (2013.01); F21K 9/23 (2016.08); F21S 4/20 (2016.01); G02F 1/133603 (2013.01); A61M 2021/0044 (2013.01); F21K 9/238 (2016.08); F21V 23/006 (2013.01); F21V 29/74 (2015.01); F21W 2102/00 (2018.01); F21W 2107/10 (2018.01); F21Y 2105/10 (2016.08); F21Y 2105/18 (2016.08); F21Y 2113/13 (2016.08); F21Y 2115/10 (2016.08); H05B 45/20 (2020.01); H05B 47/16 (2020.01);
Abstract

Methods and apparatus for providing circadian-friendly LED light sources are disclosed. A light source is formed to include a first LED emission (e.g., one or more LEDs emitting a first spectrum) and a second LED emission (e.g., one or more LEDs emitting a second spectrum) wherein the first and second LED emissions are combined in a first ratio and in a second ratio such that while changing from the first ratio to the second ratio the relative circadian stimulation is varied while maintaining a color rendering index above 80.

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