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:
Jan. 20, 2026
Filed:
Nov. 17, 2022
Fujifilm Corporation, Tokyo, JP;
Yukito Saitoh, Minamiashigara, JP;
Hiroshi Sato, Minamiashigara, JP;
Takashi Yonemoto, Minamiashigara, JP;
Jun Watanabe, Minamiashigara, JP;
Mitsuyoshi Ichihashi, Minamiashigara, JP;
Keisuke Kodama, Minamiashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A transmissive liquid crystal diffraction element includes a first optically-anisotropic layer and a second optically-anisotropic layer each of which has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, in which a rotation direction of the optical axis in the liquid crystal alignment pattern of the first optically-anisotropic layer and a rotation direction of the optical axis in the liquid crystal alignment pattern of the second optically-anisotropic layer are opposite to each other, and a single period of the liquid crystal alignment pattern in the first optically-anisotropic layer and a single period of the liquid crystal alignment pattern in the second optically-anisotropic layer are the same.