Switchable transparent screens for image projection system
US6577355B1 · kind B1 · utility
23Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Mar 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F19/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image projection system comprises an image projector, such as a film or television projector and a projection screen. The projection screen is fabricated of a substantially transparent material, such as glass or plastic. The screen of transparent material has one or more areas or portions formed therein which areas or portions may be made to be translucent upon the application of a stimulus. Once in a translucent condition, the projected image can be received and viewed on the translucent portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.