POLARIZING DIFFRACTION ELEMENT AND PHOTOREACTIVE POLYMER LIQUID CRYSTAL FOR POLARIZING DIFFRACTION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a thermally stable polarizing diffraction element by subjecting a photoreactive polymer liquid crystal thin film to photoirradiation with polarized light interference or to photoirradiation with polarized light, then inducing periodic molecular alignment by heat treatment.

SOLUTION: The polarizing diffraction element including a polymer layer having a periodically changed and immobilized molecluar alignment structure is characterized by that the polymer layer is composed of a side chain type polymer liquid crystal and has a structure periodically molecular aligned with the liquid crystalline mesogen of a polymer side chain.

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