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:
Oct. 13, 2020
Filed:
Jan. 15, 2019
Applicant:
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Inventors:
Takeshi Masuda, Sakai, JP;
Takeshi Ishida, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); F21V 8/00 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0053 (2013.01); G02B 6/0055 (2013.01); G02B 6/0056 (2013.01); G02F 1/133502 (2013.01); G02F 1/133528 (2013.01); G02B 6/0065 (2013.01); G02F 2001/133541 (2013.01);
Abstract
A lighting device includes a light source having a light exit surface, an optical member covering the light exit surface and applying an optical action to light exiting the light source, and a prism sheet coveting the optical member from an opposite side from the light source, and the prism sheet includes prism portions and a light reflecting portion that covers a part of a surface of the prism portions opposite from the optical member.