Wavelength converter and green light source and projection apparatus using the same
US8201947B2 · kind B2 · utility
0Cited by
4References
14Claims
0Family size
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Inventors
Key dates
| Filing date | Dec 3, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Dec 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wavelength converter includes a supporting substrate and a ferroelectric substrate, the ferroelectric substrate includes at least one waveguide facing the supporting substrate and at least one wavelength-filtering pattern positioned between the waveguide and the supporting substrate, the waveguide includes a plurality of inverted domains and non-inverted domains configured to convert an infrared light into a green light, and the infrared light emitted from the semiconductor laser enters the waveguide of the wavelength converter. For example, the wavelength-filtering pattern includes a Bragg grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.