Rear projection screen with pin-hole concentrator array
US9250508B1 · kind B1 · utility
5Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2014 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Nov 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3033
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rear projection screen includes an array of pin-hole apertures to pass display light incident from a first side of the rear projection screen through to a viewing side of the rear projection screen opposite the first side. An array of concentrator structures surrounds the pin-hole apertures and defines concentrating optical pathways. The concentrating optical pathways each have an input aperture for collecting the display light and an output defined by a corresponding one of the pin-hole apertures to emit the display light. The input apertures are larger than the pin-hole apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.