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:
Mar. 19, 2024
Filed:
Jul. 08, 2021
Yokogawa Electric Corporation, Musashino, JP;
Yokogawa Test & Measurement Corporation, Hachioji, JP;
Katsushi Ota, Musashino, JP;
Tsukasa Kokubo, Hachioji, JP;
YOKOGAWA ELECTRIC CORPORATION, Tokyo, JP;
YOKOGAWA TEST & MEASUREMENT CORPORATION, Tokyo, JP;
Abstract
A light source device includes a semiconductor laser that has a first end surface and a second end surface parallel to each other and forming a first resonator, and an optical system that is disposed on an optical path of laser light emitted from the semiconductor laser, that forms a second resonator with the second end surface of the semiconductor laser, and that has a reflection characteristic in which a reflectance with respect to light having a previously specified wavelength width centered at a specified center wavelength of the semiconductor laser is higher than the reflectance of the first end surface.