CLOSE-BONDED DIFFRACTIVE OPTICAL ELEMENT, OPTICAL MATERIAL USED THEREFOR, RESIN PRECURSOR, AND RESIN PRECURSOR COMPOSITION
申请人:NIKON CORPORATION
公开号:EP1830205A1
公开(公告)日:2007-09-05
To obtain a close-contact multi-layer type diffractive optical element having a homogeneous high-refractive-index and low-dispersion resin layer, an acrylate-terminated oligomer, obtained by allowing excess bifunctional acrylate to react with bifunctional thiol, is used as a resin precursor for the high-refractive-index and low-dispersion resin layer.
为了获得具有均匀的高折射率和低色散树脂层的紧密接触多层型衍射光学元件,使用了丙烯酸酯封端低聚物作为高折射率和低色散树脂层的树脂前体,该低聚物是通过让过量的双官能丙烯酸酯与双官能硫醇反应而获得的。