Optical device and directional display
US6124920A · kind A · utility
33Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/398
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device includes a plurality of picture elements the phase and/or amplitude transmission of which vary in the lateral direction of the optical device reducing the level of diffraction caused by the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.