Speckle-free display system using coherent light
US5313479A · kind A · utility
145Cited by
1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speckle-free display system using coherent light is disclosed. The light is directed through a spinning diffusing element to illuminate a spatial light modulator. The spinning element is operable to move the interference patterns around the screen at a speed where it is undetectable to the human eye. The diffusing element is more than likely comprised of ground glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.