Illumination system, projection apparatus and method for driving illumination system
US10732495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2018 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jun 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2066
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination system includes a coherent light source, a first light-combining device, an optical wavelength conversion module, and a first auxiliary light source. The coherent light source emits a coherent light beam. The first light-combining device is disposed on a transmission path of the coherent light beam. The light wavelength conversion module is disposed on a transmission path of the coherent light beam transmitted from the first light-combining device and converts the coherent light beam into a first converted light beam, and reflects the first converted light beam back to the first light-combining device. The first auxiliary light source emits a first auxiliary light beam which is transmitted to the first light-combining device. The first light-combining device combines the first auxiliary light beam and the first converted light beam. A projection apparatus and a method for driving the illumination system are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.