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:
Sep. 23, 2025
Filed:
Apr. 26, 2022
Nichia Corporation, Anan, JP;
Tadaaki Miyata, Yokohama, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light emitting device includes: laser diodes (LDs); a planar lightwave circuit (PLC) including optical waveguides; and a lens. The optical waveguides include: a first optical waveguide to receive first light emitted from a first LD and to emit the first light from a first light-exiting end; and a second optical waveguide to receive second light emitted from a second LD and to emit the second light from a second light-exiting end. The first light-exiting end causes refraction such that the first light exits in a first direction. The second light-exiting end causes refraction such that the second light exits in a second direction. A distance from the first light-exiting end to the lens along the first direction is shorter than a distance from the second light-exiting end to the lens along the second direction.