Diffusion film comprising transparent substrate and diffusion layer
US7190525B2 · kind B2 · utility
13Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2002 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Apr 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3033
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffusion film includes a transparent substrate and a diffusion layer. The diffusion layer shows a specific scattered light profile measured by a goniophotometer. In the scattered light profile, a ratio of an intensity of scattered light at an angle of 30° to an intensity of transmitted light at an angle of 0° is 0.01 to 0.2%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.