Back lighting device
US5947578A · kind A · utility
69Cited by
18References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A back lighting device includes a light waveguide having generally planar upper and lower surfaces, a light module having a lamp member encapsulated between the upper and lower surfaces, a specular reflective material applied about the waveguide lower surface, and a light extracting material applied about the waveguide upper surface. The waveguide can be mounted in a user specific frame to allow high volume usage of a common waveguide element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.