Phase retarder film
US5926313A · kind A · utility
5Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
As a phase retarder film in which at least one oblique evaporation layer of an inorganic dielectric having positive refractive index anisotropy and having its principal optic axis tilted 20 degrees to 70 degrees from the direction of the normal to the film is formed on at least one surface of a transparent polymer film with an intermediate layer between, a large area film is easily and inexpensivly obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.