Light-emitting device and projection system
US9897899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2015 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Jul 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B33/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure discloses a light-emitting device and a projection system, comprising: a light source, configured to emit excitation light; a beam-splitting-combining plate disposed in an outgoing light path of the excitation light, and including a beam-splitting portion configured to split the excitation light into a first excitation light and a second excitation light along different propagation paths; a first wavelength conversion device including a first wavelength converting layer configured to absorb the first excitation light to generate first excited light; and a second wavelength conversion device configured to reflect the second excitation light back to the beam-splitting-combining plate. The beam-splitting-combining plate further includes a beam-combining portion disposed around the beam-splitting portion, and the beam-combining portion is configured to combine the first excited light and the second excitation light respectively reflected to the beam-splitting-combining plate into one beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.