Diffusely reflecting polarizing element including a first birefringent phase and a second phase
US5825543A · kind A · utility
388Cited by
50References
58Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133545
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film with 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.