Reflective projection screen with angled sidewalls
US7274508B2 · kind B2 · utility
1Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Jul 21, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A projection screen includes a plurality of passive elements each having a sidewall surrounding a surface, wherein said sidewall is configured to attenuate light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.