Illumination system having edge-illuminated waveguide and separate components for extracting and directing light
US6106128A · kind A · utility
8Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Sep 11, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination system has separate components for extracting and directing light from a waveguide. The system eliminates the need to provide a light directing array (LDA) that is optically and physically coupled to the waveguide. It is more reliable and robust than previous illumination systems and virtually eliminates the failures associated illumination systems having laminated LDAs. Manufacturing costs are reduced and system performance and reliability are improved. The illumination system is inexpensive to construct, and operates in an efficient, reliable manner, affording extended service at low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.