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:
Aug. 02, 2022
Filed:
Jun. 29, 2017
Applicant:
Materion Precision Optics (Shanghai) Limited, Shanghai, CN;
Assignee:
MATERION PRECISION OPTICS (SHANGHAI) LIMITED, Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G02B 26/008 (2013.01); G03B 21/204 (2013.01); G03B 21/2066 (2013.01);
Abstract
A phosphor wheel () includes an annular disc () having phosphor segments () and an exposed annular sector (), a hub () coupled to the inner perimeter () of the annular disc, and a balancing piece () located between the hub and the exposed annular sector. The balancing piece minimizes the initial imbalance of the phosphor wheel about the center () of the disc due to the exposed annular sector by making up the difference in torque. A method for making a phosphor wheel, a projector comprising a phosphor wheel, and a method for minimizing imbalance in a phosphor wheel.