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:
Nov. 07, 2023
Filed:
Jul. 31, 2022
Applicant:
Nichia Corporation, Anan, JP;
Inventor:
Keiji Emura, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); F21V 7/10 (2006.01); F21V 13/04 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0068 (2013.01); F21V 7/10 (2013.01); F21V 13/04 (2013.01); G02B 6/0055 (2013.01); F21V 2200/20 (2015.01);
Abstract
A planar light source includes a light source, a light guide member, and a sectioning member. The light guide member has a light source placement part in which the light source is disposed and a section defining part having a groove surrounding the light source placement part. The sectioning member has light reflectivity and is disposed in the section defining part. A first portion in the section defining part that is furthest from a center of the light source in a plan view has a transmittance higher than a transmittance of a second portion in the section defining part that is closest from the center of the light source in the plan view.