OPTICAL ELEMENT MADE OF PLASTIC AND OPTICAL PICKUP DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a plastic-made optical element capable of easily maintaining excellent pickup characteristics by manufacturing a lens capable of maintaining highly accurate optical characteristics for a long time, and an optical pickup apparatus.

SOLUTION: This plastic-made optical element is molded by adding an additive for reducing a refractive index by decomposing corresponding to irradiation of light to a resin composition with the refractive index increased with time corresponding to irradiation of light. The optical pickup apparatus using the plastic-made optical element is manufactured.

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