Light source assemblies
US8550681B2 · kind B2 · utility
2Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2008 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Oct 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source assembly comprises a light pipe, a first color light source at a first tapered light collector, a second light source at a second tapered light collector, and at least a first dichroic filter operative to pass first color light and to reflect second color light toward a light output port. A light valve may be positioned to receive light from the light pipe. One or more light entrances to the light pipe may have a filter, e.g., a short wave pass filter, oriented in a plane generally parallel to the axial optical pathway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.