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:
Mar. 09, 2021
Filed:
Oct. 05, 2018
Applicant:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Inventors:
Yoshiyuki Yahagi, Tokyo, JP;
Kouichi Tanaka, Tokyo, JP;
Saki Abe, Tokyo, JP;
Yuki Aikawa, Tokyo, JP;
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/12 (2006.01); G02C 7/10 (2006.01); G02B 5/30 (2006.01); B32B 7/02 (2019.01);
U.S. Cl.
CPC ...
G02C 7/12 (2013.01); B32B 7/02 (2013.01); G02B 5/30 (2013.01); G02C 7/10 (2013.01);
Abstract
An optical film for eyewear includes a light control layer and at least one light reflection layer laminated in this order from an outer side with respect to a viewer. The light reflection layer includes a cholesteric liquid crystal layer that reflects left-handed circularly polarized light or right-handed circularly polarized light in a visible light range, and the light control layer is a quarter wave plate.