Projection screen
US5477380A · kind A · utility
21Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1994 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Jun 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection screen comprises a horizontal refracting linear Fresnel lens sheet, a vertical refracting linear Fresnel lens sheet and a light diffusing lenticular lens sheet, which are arranged from the beam-projection side starting with the horizontal refracting linear Fresnel lens sheet followed by the vertical refracting linear Fresnel lens sheet and ending with the light diffusing lenticular lens sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.