Armstrong, Nikaido, Marmelstein & Kubovcik
Highly-refractive plastic lens
 A plastic lens formed from a copolymer of three components. A first component which is a vinyl monomer having a nucleus-halogen-substituted aromatic ring. A second component which is selected from at least one member of the group consisting of aliphatic diacrylate, dimethacrylate, triacrylate, and trimethacrylate. A third component is chosen from mono-acrylate or mono-methacrylate having a nucleus-halogen substituted aromatic ring. The components are present in the weight ratio of 20/15/0 to 85/80/60 weight percent, respectively. 
Toray Industries, Inc.
G G
G02B G02B
inventional inventional
Sadayuki Tadanori Masami
Sakamoto Fukuda Saito