Abstract: A circularly polarizing plate comprises a linearly polarizing membrane and a quarter wave plate. The quarter wave plate comprises an optically anisotropic layer A and an optically anisotropic layer B. The quarter wave plate has such an optical characteristic that a retardation value essentially is a quarter of a wavelength when the retardation value is measured at the wavelength of 450 nm, 550 nm and 650 nm. One of the optically anisotropic layers A and B is a layer made from liquid crystal molecules, and the other is a polymer film or a layer made from liquid crystal molecules.
Type:
Grant
Filed:
April 10, 2002
Date of Patent:
July 15, 2003
Assignee:
Fuji Photo Film Co., Ltd.
Inventors:
Kohei Arakawa, Ken Kawata, Mitsuyoshi Ichihashi