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. 28, 2020
Filed:
Dec. 10, 2018
Applicant:
Qisda Corporation, Taoyuan, TW;
Inventors:
Assignee:
Qisda Corporation, Taoyuan, TW;
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);
Abstract
A color wheel used in a projector includes X color blocks and Y filter blocks; therein, X is an integer equal to or larger than 3. The X color blocks are defined to be arranged in an annular direction by repeating (N-1) times; therein, N is an integer equal to or larger than 2. The light permeability characteristics of the X color blocks are distinct from one another. The X color blocks correspond to X light colors respectively. The X color blocks are substantially equal in area. The Y filter blocks are formed of the X color blocks. The Y filter blocks correspond to the X light colors. One of the Y filter blocks is formed by two color blocks of one of the X color blocks.