Polymeric optical film
US7099083B2 · kind B2 · utility
13Cited by
88References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film includes a layer of simultaneous biaxially stretched polyolefin film that is substantially non-absorbing and non-scattering for at least one polarization state of visible light. The layer has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal. The layer has an in-plane retardance of 100 nm or less and an absolute value of an out-of-plane retardance being 55 nm or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.