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:
Apr. 12, 2022
Filed:
Oct. 08, 2020
Coretronic Corporation, Hsin-Chu, TW;
Po-Hung Lin, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A projector includes a light source, an optical element, a wheel-type optical assembly, a light valve, and a projection lens. The wheel-type optical assembly includes a frame, a driving unit, a rotating wheel, an optical sensing element, and a light shielding structure. The driving unit is arranged on the frame and connected to the rotating wheel. The driving unit drives the rotating wheel to rotate about a rotation axis. The optical sensing element arranged on the frame senses a rotation speed of the rotating wheel. The light shielding structure connected to the frame surrounds the optical sensing element. An orthographic projection of the light shielding structure on a reference plane partially overlaps an orthographic projection of the rotation axis on the reference plane. A normal line of the reference plane is parallel to a shortest connection line between an optical axis of the optical element and the rotation axis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile