Compact lighting device
US6246521A · kind A · utility
1Cited by
99References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | May 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact illumination device intended especially for illuminating an active matrix in a monochromatic or trichromatic display device. This device includes a source and collimating device in order to deliver a lighting direction from the source along a direction (Dy) and two optical components (M.sub.1) and (M.sub.2) which anamorphose the lighting in a direction parallel to the direction (Dy) and in a direction (Dz) perpendicular to the direction (Dy), respectively. These components may typically be of the holographic grating type operating in transmission or in reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.