Filterless chromatically variable light source
US5636303A · kind A · utility
50Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4202
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A chromatically variable light source includes a plurality of light emitting diodes which generate substantially monochromatic light at different wavelengths. The light source includes circuitry for selectively energizing one or more of the light emitting diodes and for controlling the intensity of the generated light. The light generated by the light emitting diodes is combined in a single light pipe and delivered to an output port for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.