Anti-glare device and method
US4473277A · kind A · utility
16Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1982 |
| Grant date | Sep 25, 1984 |
| Priority date | — |
| Expiry date | Jul 22, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/896
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An anti-glare device for a transmission screen includes a layer of transparent material having a front surface and a back surface. The front surface is provided with a saw-toothed profile, while the back surface is bonded to a circular polarizer. By mounting the anti-glare device a predetermined distance in front of a transmission screen, glare due to ambient light can be substantially eliminated without producing echo images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.