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. 30, 2014
Filed:
Oct. 24, 2013
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Shinya Niioka, Tokyo, JP;
Ken Sumiyoshi, Tokyo, JP;
Shin-Ichi Uehara, Tokyo, JP;
Masao Imai, Tokyo, JP;
Kenichi Takatori, Tokyo, JP;
Fujio Okumura, Tokyo, JP;
Assignee:
NLT Technologies, Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02B 3/08 (2006.01); F21V 13/02 (2006.01); F21V 33/00 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
F21V 13/02 (2013.01); G02B 3/08 (2013.01); G02F 2001/133607 (2013.01); F21V 33/0052 (2013.01); G02B 6/0053 (2013.01);
Abstract
An optical member including: a Fresnel lens sheet for deflecting and emitting deflected light, A louver for restricting a direction of light rays, where the louver restricts the traveling direction of incident light from the deflecting element to a direction that is parallel to the optical path of the incident light, and emits the restricted light. The Fresnel lens sheet is disposed so that a machined surface thereof faces the louver.