Illumination system and projection apparatus
US9228719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Oct 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2066
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination system including a plurality of first light emitting elements, a wavelength-converting unit, a first reflector and a second reflector is provided. The first light emitting elements respectively emit a plurality of exciting beams. The wavelength-converting unit is disposed on transmission paths of the exciting beams and converts the exciting beams into a first color light beam. The first reflector is disposed on the transmission paths of the exciting beams, and disposed between the first light emitting elements and the wavelength-converting unit. The first reflector has a hole. The exciting beams from the first light emitting elements are reflected by the first reflector. The second reflector reflects the exciting beams, reflected by the first reflector, to the wavelength-converting unit. The exciting beam reflected by the second reflector is transmitted to the wavelength-converting unit through the hole. A projection apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.