Fluoropolymer for chromatic aberration-free lens and chromatic aberration-free lens

摘要

A material having properties required for a chromatic aberration-free lens and excellent in moldability and impact resistance, which material is an amorphous fluoropolymer containing a carbon atom chain as a main chain and containing a fluorinated atom-bonded carbon atom as a carbon atom of the main chain, wherein vd75, θgF0.50, and ΔθgF0.03, where vd represents an Abbe number, θgF represents a relative partial dispersion of a g-F line, and ΔθgF represents a deviation from a standard line of the relative partial dispersion of the g-F line.