To provide: an optical film having high birefringence, that is, a large phase-difference in a surface direction of a film and in a depth direction thereof, the optical film being useful as a retardation film; an optical member having the optical film; and a method of manufacturing the optical film.
The optical film is the random copolymer with the chain olefin and norbornenes as the polymerization components. At the diad part and the triad part where the units of the norbornenes are connected, the solid regularity of the diad part is controlled and the copolymer is constituted by the copolymer containing the triad part at a specific rate. In the solid arrangement of the diad part of the copolymer, the rate of the meso type to the racemo type (former/latter in mole ratio) is 0.5 to 20, and the triad part may be contained by 1 to 30 mole% to the unit of whole norbornenes in the copolymer.
ISHIKAWA SAE
TEI TAKAHIRO
| JP2004107442A | 2004-04-08 | |||
| JP2006276672A | 2006-10-12 | |||
| JP2007010863A | 2007-01-18 |
| WO2007060723A1 | 2007-05-31 | |||
| WO2006057309A1 | 2006-06-01 | |||
| WO2006030797A1 | 2006-03-23 |
Hiroshi Sanaka