High contrast rear projection screen for use with a diverging illumination source
US9013790B1 · kind B1 · utility
9Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2014 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Jun 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/567
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection screen includes a transparent substrate having a front side and a backside, a dark film disposed across the front side of the transparent substrate, an array of holes disposed through the dark film, a diffusing layer disposed between the transparent substrate and the dark film, and an array of lenses disposed across the backside of the transparent substrate. The array of lenses are aligned to focus display light incident through the array of lenses towards the array of holes and the diffusing layer diffuses the display light for emission out the array of holes as diffuse display light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.