Projection monitor
US5467154A · kind A · utility
100Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Feb 10, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/74
- 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.