Light emitting device and backlight module
US9140904B2 · kind B2 · utility
1Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Nov 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0057
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light emitting device includes a laser light source, a converging lens, and a diverging lens. The laser light source is configured to emit combined red, green, and blue laser beams. The combined red, green, and blue laser beams appear to be collimated white light beams. The converging lens is configured to receive the collimated white light beams. The diverging lens faces the converging lens and is configured to diverge the collimated white light beams exiting from the converging lens. A distance between the diverging lens and the converging lens is larger than the focal length of the converging lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.