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:
Dec. 02, 2025
Filed:
Sep. 29, 2022
Applicant:
Visera Technologies Company Limited, Hsin-Chu, TW;
Inventors:
Assignee:
VISERA TECHNOLOGIES COMPANY LIMITED, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G03F 7/00 (2006.01); G03F 7/16 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1857 (2013.01); G03F 7/001 (2013.01); G03F 7/167 (2013.01);
Abstract
A method forming a grating device includes: providing a substrate; entering the substrate into a process chamber; and depositing a grating material on the substrate to form a grating material layer on the substrate. A refractive index of the grating material gradually changes during depositing the grating material in the process chamber. The grating material layer includes a varying refractive index.