Method of making a louver device for a light guide screen
US7477814B2 · kind B2 · utility
1Cited by
9References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of making a louver device for a light guide screen. More specifically, in a specific embodiment, a transparent layer is provided. A plurality of similarly angled surfaces are established within the transparent layer. The angled surfaces are coated with a light-reflective material such that the coated surfaces define a plurality of light paths through the transparent layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.