Rear-projection display device
US9804482B2 · kind B2 · utility
0Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | Sep 26, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Sep 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rear-projection display device comprises a mobile light source supplying a light beam of at least one wavelength, a holographic mirror reflecting only said at least one wavelength, an absorbent screen and a transmissive diffuser, the absorbent screen being placed on the rear face of the holographic mirror, the elements being arranged such that the beam from the light source is reflected on the holographic mirror in order to sweep the surface of the transmissive diffuser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.