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. 21, 2023
Filed:
Feb. 01, 2021
Coretronic Corporation, Hsin-Chu, TW;
Chia-Lun Tsai, Hsin-Chu, TW;
Chi-Tang Hsieh, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A rotation-type optical module includes a driving element, a turntable, an optical material, a balancing ring, and a first weight substance. The driving element includes a body and a rotating shaft body. The turntable is sleeved on the rotating shaft body and includes a first surface and a second surface. The optical material is disposed on the first surface of the turntable. The balancing ring is disposed between the driving element and the turntable and includes a third surface and a fourth surface, and the third surface and the second surface face each other. The balancing ring includes an outer retaining wall and at least one inner retaining wall which protrude from the fourth surface, and the first weight substance abuts between the outer retaining wall and the at least one inner retaining wall. A projection apparatus including the foregoing rotation-type optical module is further provided.