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. 21, 2025
Filed:
Dec. 16, 2019
Jasco Corporation, Tokyo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Takashi Fukuda, Ibaraki, JP;
Akira Emoto, Ibaraki, JP;
Yoshihito Narita, Tokyo, JP;
Hiroshi Hayakawa, Tokyo, JP;
Yuichi Miyoshi, Tokyo, JP;
JASCO CORPORATION, Tokyo, JP;
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Tokyo, JP;
Abstract
A reflective polarized-light separating diffraction-element including a substrate, a reflection surface formed on a surface of the substrate, and a lattice structured body assembly that is provided on the reflection surface and exhibits a form birefringence (Δn*). The lattice structured body assembly includes lattice structured bodies of a plurality of patterns having lattice structures of different azimuths, and these lattice structured bodies of a plurality of patterns are aligned in a predetermined direction on the reflection surface so that the azimuths of the lattice structures change in a structurally periodic manner.