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. 05, 2022
Filed:
Oct. 01, 2020
Nichia Corporation, Anan, JP;
Tadaaki Miyata, Yokohama, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light source device includes: a laser diode configured to emit laser light; a substrate directly or indirectly supporting the laser diode; a glass cap secured to the substrate and covering the laser diode, the glass cap comprising a front glass wall configured to transmit the laser light that is emitted from the laser diode, the front glass wall having an incident surface on which the laser light is incident and an emission surface from which the laser light exits; and a photodetector directly or indirectly supported by the substrate and located outside of the glass cap. The photodetector is configured to detect light reflected at the front glass wall and is transmitted through the glass cap.