Optical film with co-continuous phases
US6590705B1 · kind B1 · utility
37Cited by
110References
44Claims
0Family size
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Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249955
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.