Multilayer film having a continuous and disperse phase
US6141149A · kind A · utility
37Cited by
82References
20Claims
0Family size
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Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- 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.