Optical information-recording medium, optical information recording apparatus and optical information reproducing apparatus including optical information-recording medium and method for manufacturing polarization changing layer

A method for manufacturing a polarization-changing layer which includes a base plate and a phase difference-generating layer for generating a phase difference in the incident light, wherein molecules in said phase difference-generating layer are arranged along a circle on said base plate, said method comprising the following steps of:

• applying a phase difference material providing said phase difference-generating layer onto said base plate;
• and
• irradiating a linearly polarized light to said phase difference material in the state of rotating said substrate;
• whereby said phase difference material is disposed in a predetermined direction with respect to said linearly polarized light.

A method for manufacturing a polarization-changing layer which includes a base plate having an orientation layer on the surface and a phase difference-generating layer for generating a phase difference in the incident light, wherein molecules in said phase difference-generating layer are arranged along a circle on said base plate, said method comprising the following steps of:

• rubbing said orientation layer;
• applying a phase difference material providing said phase difference-generating layer onto said base plate;
• and
• rotating said base plate.