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. 15, 2024
Filed:
Jan. 09, 2023
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Yukito Saitoh, Minamiashigara, JP;
Akiko Watano, Minamiashigara, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13363 (2006.01); G02F 1/1335 (2006.01); G02F 1/137 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13363 (2013.01); G02F 1/133541 (2021.01); G02F 1/133553 (2013.01); G02F 1/13718 (2013.01);
Abstract
An optical element includes a cholesteric liquid crystal layer obtained by cholesterically aligning a liquid crystal compound, in which the cholesteric liquid crystal layer has a region where a refractive index nx in a slow axis direction and a refractive index ny in a fast axis direction in a plane satisfy nx>ny, a helical axis of the cholesteric alignment is parallel to a thickness direction of the cholesteric liquid crystal layer, and a helical pitch in the cholesteric alignment gradually changes in the thickness direction of the cholesteric liquid crystal layer.