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. 20, 2022
Filed:
Dec. 20, 2018
Applicant:
Olympus Corporation, Hachioji, JP;
Inventor:
Kazuhiro Hayashi, Tokyo, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 21/06 (2006.01); F21V 14/08 (2006.01); F21V 11/02 (2006.01); G02B 21/26 (2006.01);
U.S. Cl.
CPC ...
G02B 21/06 (2013.01); F21V 11/02 (2013.01); F21V 14/08 (2013.01); G02B 21/26 (2013.01);
Abstract
An illumination apparatus includes a surface light source that emits illumination light and a micro louver film that limits components of a divergence of the illumination light that are parallel to a light emission plane of the surface light source. The illumination apparatus satisfies the following conditional expression:20°≤≤60°  (1)