OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical information recording medium which can make the permissible value of the undulation of an optical recording medium greater and can make the incident lens system compact. SOLUTION: The optical information recording medium into which a hologram by fine ruggedness is built into a single mode plane type optical waveguide, is provided with a light reflecting structure 3-1 having periodicity of a period A in the longitudinal direction of a waveguide end face 3-4 at the waveguide end face 3-4.