Plastic GRIN rod lenses have been fabricated by photocopolymerization of ternary monomer systems. To select the monomer appropriate to photocopolymerization, we developed a computer program to predict the physical constants of the homopolymer from the chemical structure. Furthermore, according to the model of the gradient-index formation, methyl methacrylate (MMA)–acrylonitrile–vinyl benzoate (VB) monomer system and MMA–benzyl acrylate–VB monomer system were chosen as suitable systems. In both monomer systems, plastic GRIN rods with good lens functions up to the periphery were successfully obtained.
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Koike et al. (1984) studied this question.
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