Projection device and associated electro-optic monochrome display device with phosphor layer and interference filters
US4882617A · kind A · utility
66Cited by
9References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1987 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Dec 17, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection device features at least one monochrome display device including electro-optic means defining a pattern for display, a monochrome luminescent layer, a first interference filter for reflecting the luminescent emission forward toward a display screen, and a second interference filter for obtaining a limited transmission angle for the desired spectral output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.