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:
Apr. 21, 2020
Filed:
May. 02, 2018
Applicant:
Minebea Mitsumi Inc., Nagano, JP;
Inventor:
Kazumasa Adachi, Fukuroi, JP;
Assignee:
MINEBEA MITSUMI INC., Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0091 (2013.01);
Abstract
A planar lighting device according to an embodiment includes a light guide plate, a light source, and a stopper. The light guide plate includes a light entering end surface that light enters. In the light source, a light emitting surface that emits light faces the light entering end surface. The stopper includes a facing end surface facing, in the light entering end surface, an area that does not face the light emitting surface of the light source, and controls the light guide plate to move in a direction approaching the light source.