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:
Jun. 04, 2024
Filed:
Sep. 29, 2021
Applicant:
Nichia Corporation, Anan, JP;
Inventor:
Keiji Emura, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0051 (2013.01); G02B 6/0003 (2013.01); G02B 6/0055 (2013.01);
Abstract
A light-emitting device includes a light-emitting element, a light guide member surrounding the light-emitting element, a diffuser plate located on the light-emitting element and on the light guide member, and a metal pattern located at an upper surface of the diffuser plate. The diffuser plate contacts the light-emitting element and diffuses light emitted from the light-emitting element. A proportion of a region of the upper surface of the diffuser plate where the metal pattern is not located increases as a distance from the light-emitting element increases.