Projection monitor
US5692820A · kind A · utility
80Cited by
26References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1995 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Jan 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0464
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rear projection monitor having a housing with reduced depth is disclosed. Images produced by liquid crystal active matrices are illuminated by a light source. The images are enlarged and projected by a projection lens having a large rear focus. A mirror reflects the projected images onto a viewing screen. The mirror is positioned between 36.degree. and 45.degree. in relation to the viewing screen. The back of the housing is adjacent to and slopes at the same angle as the mirror. The depth of the projection monitor is between 33% to 41% of the diameter of the viewing screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.