CLOSE-BONDED DIFFRACTIVE OPTICAL ELEMENT, OPTICAL MATERIAL USED THEREFOR, RESIN PRECURSOR, AND RESIN PRECURSOR COMPOSITION

摘要

A close-contact multi-layer type diffractive optical element having a homogeneous low-refractive-index and high-dispersion resin layer is produced with satisfactory workability. Among two optical members constituting a diffractive plane, a low-refractive-index and high-dispersion member is formed, using a resin precursor composition containing bifunctional fluorine-containing (meth)acrylate and bifunctional (meth)acrylate having a fluorene structure.