Backprojection transparency viewer
US6246450A · kind A · utility
16Cited by
14References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Jul 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/903
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A viewbox comprising: a faceplate adapted for mounting a transparency thereon; a light modulator comprising a plurality of light valves which modulates light to form a light pattern; and a projector which projects the modulated light pattern onto the back of the faceplate, such that the faceplate is back-lighted with a scaled version of the light pattern, wherein each light-valve of said plurality of light-valves corresponds to a pixel in the light pattern and wherein neighboring pixels have an overlap of at least 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.