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:
Feb. 24, 2026
Filed:
Sep. 06, 2022
Applicant:
Coretronic Corporation, Hsin-Chu, TW;
Inventor:
Chia-Lun Tsai, Hsin-Chu, TW;
Assignee:
Coretronic Corporation, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G03B 21/204 (2013.01);
Abstract
A wheel includes a substrate and an optical layer. The substrate includes an inner substrate and multiple wave-shaped structures. The inner substrate has a first surface and a second surface opposite to the first surface. The optical layer is disposed on the first surface. An excitation beam is incident toward the optical layer. The wave-shaped structures are connected to and disposed around the inner substrate. A first portion of the wave-shaped structures connected to the inner substrate include at least a slope. A projection device is provided.