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:
Jul. 18, 2023
Filed:
May. 31, 2022
Applicant:
Nichia Corporation, Anan, JP;
Inventor:
Tadaaki Miyata, Yokohama, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/026 (2006.01); H01S 5/02257 (2021.01); H01S 5/062 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0264 (2013.01); H01S 5/02257 (2021.01); H01S 5/06236 (2013.01);
Abstract
A light source device includes: a laser diode including an emission end surface for emitting laser light and a rear end surface opposite to the emission end surface; a reflecting member that reflects a portion of the laser light emitted from the emission end surface of the laser diode; a photodetector configured to detect light that is reflected at the reflecting member; and a light-shielding member disposed between the rear end surface of the laser diode and the photodetector, the light-shielding member configured to shield at least a portion of light emitted from the rear end surface of the laser diode.