Graded-refractive-index optical plastic material and method for its production

摘要

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer (a) which has substantially no C-H bond and at least one material (b) which has substantially no C-H bond and differs from the fluoropolymer (a) in refractive index by at least 0.001, wherein the material (b) is distributed in the fluoropolymer (a) so as to have a concentration gradient in a specific direction, and the optical plastic material has a glass transition temperature which is substantially uniform throughout it.