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.:
Date of Patent:
Jun. 30, 2020
Filed:
Apr. 17, 2017
Applicant:
Soraa, Inc., Fremont, CA (US);
Inventors:
Aurelien J. F. David, San Francisco, CA (US);
Arpan Chakraborty, Fremont, CA (US);
Michael Ragan Krames, Los Altos, CA (US);
Troy Trottier, Fremont, CA (US);
Assignee:
ECOSENSE LIGHTING, INC., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/16 (2006.01); H01L 33/50 (2010.01); C09K 11/08 (2006.01); C09K 11/77 (2006.01); H01L 33/54 (2010.01); C09K 11/56 (2006.01); H01L 33/08 (2010.01); H01L 33/32 (2010.01); H01L 33/48 (2010.01); H01L 25/075 (2006.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); C09K 11/0883 (2013.01); C09K 11/565 (2013.01); C09K 11/7721 (2013.01); C09K 11/7734 (2013.01); C09K 11/7739 (2013.01); C09K 11/7774 (2013.01); H01L 33/08 (2013.01); H01L 33/32 (2013.01); H01L 33/486 (2013.01); H01L 33/54 (2013.01); H01L 25/0753 (2013.01); H01L 33/50 (2013.01); H01L 2924/0002 (2013.01); Y02B 20/181 (2013.01);
Abstract
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.