Holographic full color data retrieval and projection system
US5011244A · kind A · utility
40Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1988 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Dec 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic full-color, data retrieval and projection system includes a holographic information storage plate that includes a plurality of reflective holograms, each designed to diffract light over a certain spectral bandwidth, and a holographic screen character plate, which includes a plurality of screen hologram character shapes that reflect diffracted light in a uniform, well-defined cone of diffuse light directed toward the viewer, producing images having high screen gain and high brightness, yet with lower power consumption than heretofore obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.