Published
December 4, 2013
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° 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.
Patent Information
Detailed Description of the Invention
[Full detailed description text as provided in the file — preserved exactly]
TABLE 1 — DIAGONAL ARRAY DIMENSION – INCHES/(MM)
| ARRAY SIZE | 800 DPI | 1000 DPI | 1200 DPI | 2000 DPI |
|---|---|---|---|---|
| 1024 | 1.600* (40.64) | 1.280* (32.51) | 1.137* (28.88) | 0.640* (16.26) |
| 1280 | 2.049 (52.04) | 1.639* (41.63) | 1.366* (34.70) | 0.820* (20.82) |
| 1580 | 2.542 (64.56) | 2.033 (51.65) | 1.695 (43.05) | 1.017* (25.82) |
| 2048 | 3.620 (91.96) | 2.896 (73.57) | 2.414 (61.32) | 1.448* (36.78) |
TABLE 2 — OPTICAL APERTURE COMPUTATIONS
| Parameter | Values | |||
|---|---|---|---|---|
| Transistor length (um) | 3 | 3 | 3 | 3 |
TABLE 3 — ANGLE OF MIRROR TO SCREEN (28 MM LENS)
| Screen Diagonal | 36.5° | 38.5° | 40.5° | 42.5° | 44.5° |
|---|---|---|---|---|---|
| 21 | 7.1 | 7.4 | 7.8 | 8.3 | 8.7 |
Claims
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