Optical multilayer film, polarizing plate and optical product
US7285323B2 · kind B2 · utility
18Cited by
17References
10Claims
0Family size
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Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Jun 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical multilayer film comprising a hard coat layer and a low refractive index layer comprising aerogel, which layers are laminated, in this order, directly or with another intervening layer on one surface of a base film comprising a transparent resin, wherein the refractive index nH of the hard coat layer and the refractive index nL of the low refractive index layer satisfy the following three formulae [1], [2] and [3],1.25≦nL≦1.37 Formula [1]nH≧1.53 Formula [2](nH)1/2−0.2<nL<(nH)1/2+0.2. Formula [3.]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.