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. 10, 2026
Filed:
Jan. 02, 2024
Fujifilm Corporation, Tokyo, JP;
Yukito Saitoh, Minamiashigara, JP;
Yujiro Yanai, Minamiashigara, JP;
Hiroshi Sato, Minamiashigara, JP;
Takashi Yonemoto, Minamiashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Provided is a spectroscope excellent in measurement efficiency. A spectroscope that separates incident light to be measured including a spectroscopic unit that reflects and separates incident light and a detection unit that detects light reflected from the spectroscopic unit, in which the spectroscopic unit includes a first cholesteric liquid crystal layer obtained by fixing a cholesteric liquid crystalline phase and a second cholesteric liquid crystal layer obtained by fixing a cholesteric liquid crystalline phase, the first cholesteric liquid crystal layer and the second cholesteric liquid crystal layer have a liquid crystal alignment pattern in which an orientation of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, a rotation direction of the optical axis in the liquid crystal alignment pattern of the first cholesteric liquid crystal layer is opposite to a rotation direction of the optical axis in the liquid crystal alignment pattern of the second cholesteric liquid crystal layer, and a twisted direction of the liquid crystal compound in a thickness direction of the first cholesteric liquid crystal layer is opposite to a twisted direction of the liquid crystal compound in a thickness direction of the second cholesteric liquid crystal layer.