Light-emitting apparatus and a related projection system
US9778553B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2014 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Mar 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light-emitting apparatus and a related projection system. The light-emitting apparatus comprises an excitation light source generating an excitation light and a first supplemental laser source generating a first light; a wavelength conversion apparatus comprising a first wavelength conversion layer for absorbing the excitation light to generate a converted light without absorbing the first light; the wavelength conversion layer receiving at one side thereof the excitation light and the first light and emits at same side at least a portion of the first light; a light guide apparatus comprising a smaller first area and a larger second area, the first light and the excitation light respectively entering the first and second areas via a first optical path, and being respectively guided by the first and second areas to the wavelength conversion apparatus; the second area also guiding the converted light and the reflected first light to a second optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.