Holographic projection screen and method of production
US6288805A · kind A · utility
3Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1996 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Feb 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/0256
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic projection screen for large screen projection and back projection with a liquid crystal projector. The screen includes at least one layer made of a photosensitive material in which at least one index grating may be recorded by an interference of an optical recording wave with an optical object wave. The thickness of the layer is equal to or greater than n.sub.0.LAMBDA..sup.2 /2.pi., where n.sub.0 is the average index of the photosensitive material, .LAMBDA. is the average spacing of the index grating and .lambda. is the recording wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.