| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical film which has high toughness and can control the phase difference and its wavelength dispersion generating in the film. SOLUTION: The norbornene resin-based optical film consists of a copolymer having a structural unit expressed by general formula (1) and a structural unit expressed by general formula (2). In the formulae, m represents an integer 1, p represents 0 or an integer 1, each of X and Y independently represents -CH=CH or -CH2 -CH2 - and each of R<1> to R<8> represents a hydrogen atom, halogen atom, hydrocarbon group or the like. |
