Abstract
Summary: We propose in this paper a new plastic rodโlens with low chromatic aberration. Since a plastic rodโlens has a parabolic refractive index distribution, it usually also shows a distribution of Abbe number. This Abbe number distribution is thought to cause the chromatic aberration of the plastic rodโlens array. We have studied novel materials for a new plastic rodโlens with low chromatic aberration and have provided new transparent polymer blends consisting of two polymers with different refractive indices and with almost equal Abbe numbers by using a fabrication process based on photopolymerization of methacrylate monomer(s) in the presence of other methacrylic polymers. The process can give new transparent polymer blends which cannot be formed using conventional techniques for polymer blend formation. In this work, tricyclo[5,2,1,0^2,6^]decaโ8โyl methacrylate is used as a high refractive index monomer and tertโbutyl methacrylate is used as a low refractive index one. By using polymer blends including these monomer units, we have created a plastic rodโlens with lower chromatic aberration.
Molecular structures of comonomers in the study.
magnified imageMolecular structures of comonomers in the study.