| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical lens having small distribution of refractive index and small aberration of the lens (the deviation of focal length) in the inside part of of the lens. <P>SOLUTION: The optical lens is obtained by forming an α-olefin monomer norbornene based monomer addition copolymer containing a structural unit (I) originating from a 2-30C α-olefin and a structural unit (II) originating a norbornene based monomer having an aromatic ring in a molecule and ≥83 mol% endo-body. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
