Back-coupled illumination system with light recycling
US5839823A · kind A · utility
104Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1996 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Mar 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The light output of a back-coupled illumination system is improved by recycling reflected and misdirected light rays. A reflector at the light source and an array of microprisms having reflective elements therebetween efficiently redirect errant light rays to increase the total available light output and improve efficiency. Both specular and diffuse reflective materials may be used in combination to enhance light output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.