OPTICAL REFRACTIVE INDEX MODULATING POLYMER, OPTICAL REFRACTIVE INDEX MODULATING POLYMER COMPOSITION AND REFRACTIVE INDEX CONTROLLING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling the refractive index of a polymeric optical molded material for optical use that does not require complicated steps such as preliminary oxidation, can change the refractive index efficiently, and is excellent in transparency when optical devices are fabricated.;SOLUTION: This optical refractive index modulating polymer is a polymer from monomers including, as an indispensable component, an acrylic-vinyl monomer represented by CH₂=C(R¹)C(=O)O-R²=CH₂ (wherein R¹ is a hydrogen atom or methyl group; R² is a saturated or unsaturated 1-20C hydrocarbon group that may have a hetero atom or halogen atom in a molecule), and has radically-polymerizable side-chain vinyl groups remaining in a molecule. According to the method for controlling the refractive index, the polymer or a composition comprising the polymer is irradiated with UV or other type of rays to cause density change by the reaction of the above vinyl groups so that the refractive index increase (Δn) before and after the irradiation is ≥0.005.;COPYRIGHT: (C)2005,JPO&NCIPI