Portable front projection screen assemblies with flexible screens
US7489444B1 · kind B1 · utility
26Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Dec 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Portable projection screen assemblies include a case comprising a flexible projector screen held on a roller, the screen has a high ARR and a high-gain and can be adapted for use in uncontrolled indoor ambient lighting conditions. The case is configured with releasably matable first and second housing members and a slidably collapsible frame that slides open in a side-to-side orientation and unrolls the projector screen to at least one predetermined viewing configuration and closes together to encase the screen and frame therein. The projector screens may be particularly suitable for use with low-lumen projectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.