OPTICAL MATERIAL AND OPTICAL ELEMENT, DIFFRACTION OPTICAL ELEMENT, AND STACKED TYPE DIFFRACTION OPTICAL ELEMENT MOLDED THEREOF

摘要

Use of an organic optical material whose Abbe's number (vd) and secondary dispersion (thetag,F) satisfy the relationship thetag,F<=-2vdx10^-3+0.59 provides an optical material which causes reduced optical scattering, the optical material having excellent optical scattering characteristics and secondary dispersion characteristics equivalent to those of a compound in which fine particles of conductive metal oxides such as ITO are dispersed in an organic resin.