Backprojection transparency viewer
US6309074A · kind A · utility
19Cited by
17References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of transparency viewing, including: placing a transparency at a viewing surface, forming a light pattern and projecting the light pattern to back-illuminate the transparency. Preferably, the light pattern is formed by spatially modulating a beam of light using a plurality of light valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.