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. 14, 2025
Filed:
Mar. 21, 2024
Cellid, Inc., Tokyo, JP;
Tatsuo Inabata, Tokyo, JP;
Susumu Tateoka, Tokyo, JP;
Toshiaki Shozu, Tokyo, JP;
Satoshi Shiraga, Tokyo, JP;
Cellid, Inc., Tokyo, JP;
Abstract
A projection substrate including: an incident region that includes a diffraction grating in which a plurality of first grooves are formed with a first period; a splitting region that includes a diffraction grating in which a plurality of second grooves are formed with a second period; and an emission region that includes a diffraction grating in which a plurality of third grooves are formed with a third period, wherein the incident region guides an incident projection light toward the splitting region, the splitting region includes a plurality of first divided regions, each having the second grooves with different depths, and guides a part of the projection light entering from the incident region toward the emission region, and the emission region guides at least a part of the projection light entering from the splitting region and emits that part of the projection light as an image light from a second surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile