Color wheel for projector
US10634901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Dec 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/204
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.