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:
Apr. 13, 2021
Filed:
Dec. 27, 2016
Applicants:
Tamura Corporation, Tokyo, JP;
Koha Co., Ltd., Tokyo, JP;
Inventors:
Mikihiko Uwani, Tokyo, JP;
Akira Ito, Tokyo, JP;
Hiroyuki Sawano, Tokyo, JP;
Kentaro Tone, Tokyo, JP;
Hiroaki Sano, Tokyo, JP;
Daisuke Inomata, Tokyo, JP;
Kazuyuki Iizuka, Tokyo, JP;
Assignees:
Tamura Corporation, Tokyo, JP;
Koha Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S 41/16 (2018.01); C30B 29/28 (2006.01); F21S 41/176 (2018.01); F21V 9/38 (2018.01); F21V 13/14 (2006.01); F21K 9/64 (2016.01); H01S 5/00 (2006.01); H01S 5/323 (2006.01); F21S 41/365 (2018.01); F21Y 115/30 (2016.01);
U.S. Cl.
CPC ...
C30B 29/28 (2013.01); F21K 9/64 (2016.08); F21S 41/16 (2018.01); F21S 41/176 (2018.01); F21V 9/38 (2018.02); F21V 13/14 (2013.01); H01S 5/005 (2013.01); H01S 5/32341 (2013.01); F21S 41/365 (2018.01); F21Y 2115/30 (2016.08);
Abstract
A light emitting device includes a laser diode that emits a blue light, and a wavelength conversion part that absorbs a part of light emitted from the laser diode and converts a wavelength thereof. The wavelength conversion part includes a YAG-based single crystal phosphor. Irradiance of light emitted from the laser diode and irradiated on the wavelength conversion part is not less than 80 W/mm.