Color display device in which the area of a spherical lens equals the area of a set of RGB sub-pixels
US5801794A · kind A · utility
22Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3108
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a color display device comprising a chromatic dispersive grating and an active matrix possibly of liquid crystal type. This device moreover comprises a matrix of spherical microlenses, the shape of the cross section of the microlenses being such that it makes it possible to compensate for the spreading of the R G B colored beams by virtue of the use of a dispersive grating, and hence to make best use of the circular aperture of projection objectives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.