Patent ID: 7261845

Claim:
A process for producing a plastic lens which comprises: mixing the following components (A) to (D) to form a mixed fluid: (A) a lens material monomer comprising diethylene glycol bisallylcarbonate, (B) an organic peroxide-based polymerization initiator, (C) a cobalt fluid comprising a cobalt compound represented by at least one of CoO·Al 2 O 3 and Co·Al 2 O 4 in a dispersant, and (D) at least one ultraviolet light absorbent selected from 2-hydroxy-4-octyloxybenzophenone, 2,2′,4,4′-tetrahydroxy-4-octyloxybenzophenone and 2,2′,4′-trihydroxy-4-octyloxybenzophenone; and degassing the mixed fluid to remove the entire amount or a portion of the dispersant, casting the fluid obtained by the degassing into a mold and polymerizing the fluid to obtain a plastic lens.