Phosphor wheel, light source module and projector
US11979690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3158
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application relates to the field of projection technology and discloses a phosphor wheel, a light source module, and a projector. A phosphor wheel includes a base, a first phosphor layer, and a second phosphor layer. The base includes an excitation light reflecting section and an excitation light transmitting section. The first phosphor layer is disposed on a surface of the excitation light reflecting section facing a direction of incident light and spreading along a circumferential direction of the base. The second phosphor layer is disposed on a surface of the excitation light transmitting section facing away from the direction of incident light and spreading along a circumferential direction of the base. The first phosphor layer and the second phosphor layer are offset to each other in a radial direction of the base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.