Optical film and method of adjusting wavelength dispersion characteristics of the same
US9448349B2 · kind B2 · utility
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Key dates
| Filing date | May 8, 2014 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | May 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film including at least one retardation film and at least one isotropic layer made of an isotropic material, wherein the difference in average refractive between the retardation film and the isotropic layer is at least 0.1 or more is provided. A method of adjusting wavelength dispersion characteristics of an optical film including stacking an isotropic layer onto a retardation film, and a method for preparing optical films having a variety of wavelength dispersion characteristics by coating the retardation film with the isotropic layer are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.