Method of Compensating Wavelength Dependence of Birefringence of Optical Part, Optical Part, and Display Obtained with these

摘要

The present invention is to provide a method of compensating the wavelength dependence of birefringence of an optical part (B) which comprises using a film (a) made of a (co)polymer (alpha) obtained from at least one olefin selected among 4-methyl-1-pentene, 3-methyl-1-pentene, and 3-methyl-1-butene as a (co)monomer ingredient.