| 摘要 |
PROBLEM TO BE SOLVED: To realize a retardation film having significant wavelength dispersion and temperature compensation effect to transmitted light and a controlled opti cal axis direction and a method for manufacturing the same by exposing and orienting in a molecular level a film of a mixture of a photosensitive polymer and a low molecular weight compound. SOLUTION: The film of the mixture of the photosensitive polymer and the low molecular weight compound is formed. The retardation film having the significant wavelength dispersion and the temperature compensation effect toward the transmitted light is obtained by exposing the film using a device consisting of an ultraviolet lamp and a power source or an optical element transforming natural light to polarized light (e.g. a Glan-Taylor prism) and enhancing a photoreaction of photosensitive groups aligned in a specified direction. The optical axis is oriented with arbitrary inclination by carrying out the irradiation from a direction inclined with respect to the film surface. As a result, the retardation film having the significant wavelength dispersion and the temperature compensation effect toward the transmitted light and the optic axis set to a desired direction is provided. |
