Rear projection display screen and device
US9989841B2 · kind B2 · utility
0Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2015 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Nov 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/604
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention involves a rear projection display screen, including at least one assembly including: a film having a surface facing the back of the screen including ridges defining prisms; and an element of controllable refraction index, coating the ridged surface of said film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.