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. 11, 2025
Filed:
Aug. 05, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kouki Ichihashi, Osaka, JP;
Abstract
An optical resonator of wavelength beam combining type, includes: a laser diode array having a plurality of laser elements arranged along a predetermined direction and configured to emit light beams having wavelengths different from one another; a diffraction grating that diffracts the light beam emitted from each of the laser elements at a diffraction angle corresponding to the wavelength of the light beam; an output coupler that reflects a part of the light beam diffracted by the diffraction grating toward each of the laser elements; and an optical system provided between the laser diode array and the diffraction grating and configured to align the light beams emitted from the laser elements with one another; wherein the optical system includes a first lens element having a negative power only in the predetermined direction and a second lens element having a positive power only in the predetermined direction.