Stacked microvoided light diffuser
US7132136B2 · kind B2 · utility
30Cited by
18References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jan 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249978
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a light diffuser comprising a polymeric film wherein the film comprises a plurality of layers having void geometry in which the x/y/z size or frequency varies by at least 28% between at least two layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.