Image display apparatus, and disguising device
US8243230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Mar 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display apparatus including a display device for displaying an image by emission of display light in a first direction; a scattering layer disposed in front of the display device, for scattering at least a portion of ambient light; a transparent plate-shaped light source, arranged parallel to the scattering layer and being optically coupled to the scattering layer. The plate-shaped light source may be a passive light source, in which case at least one light source is arranged along an edge of the plate-shaped light source. When the display device is ON, the scattering layer and the plate-shaped light source are transparent. When the display device is OFF, the scattering layer is scattering and the plate-shaped light source is ON.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.