Illumination device, projection system and operation methods thereof
US11442346B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Nov 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination device, a projection system and operation methods thereof are provided. The illumination device includes a controller, a light source device, a phosphor wheel, a cooling device, and a temperature sensor. The light source device is configured to generate an illumination beam according to a light source control signal. The phosphor wheel is configured to convert the illumination beam into a conversion beam, adjust a rotation speed of the phosphor wheel according to a phosphor wheel control signal, and generate a rotation speed status signal. The temperature sensor is configured to sense a temperature value of the phosphor wheel to generate a temperature status signal. The cooling device is configured to adjust a cooling capacity according to a cooling control signal. The controller generates the cooling control signal according to the temperature status signal, the rotation speed status signal, and the light source control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.