| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a molded product having a thin platy matrix composed of a cured material of a photopolymerizable composition, and a plurality of columnar structures disposed in the matrix and having a refractive index different from the matrix, the arrangement period of the columnar structures being controlled to be <5 μm. <P>SOLUTION: The molded product in which the arrangement period of the columnar structures is ≤4 μm is provided. More specifically, the photopolymerizable composition contains a photopolymerization initiator having an absorbance A<SB POS="POST">λ</SB>of a wavelength of parallel light irradiated in polymerization of ≥0.1; in the case of 0.1≤A<SB POS="POST">λ</SB><0.2, the molecular weight of a polyfunctional monomer contained in the photopolymerization composition is ≤200, and in the case of 0.2≤A<SB POS="POST">λ</SB><1.0, the molecular weight of the polyfunctional monomer is ≤250, and in the case of A<SB POS="POST">λ</SB>≥1.0, the molecular weight of the polyfunctional monomer is not especially limited. <P>COPYRIGHT: (C)2012,JPO&INPIT |
