| 摘要 |
PROBLEM TO BE SOLVED: To provide a spectacle lens that enables industrial injection molding and production, and has a high refractive index, low Abbe number, low birefringence, and high transparency. SOLUTION: The spectacle lens includes a resin composition containing: a polycarbonate resin (A), which is the polycarbonate resin containing a structure unit derived from 2,2-bis (4-hydroxyphenyl) propane of≥90 mol%, wherein refractive indices in a light d-line (wavelength of 587.6 nm) of the resin are 1.582-1.588, Abbe numbers of the resin are≥30 and≤35, and a weight average molecular weight is 15,000-35,000; and a styrene resin (B), which is the styrene resin provided by copolymerization of styrene with maleic anhydride, containing a structure unit derived from maleic anhydride of 3-18 mol%, wherein refractive indices in a light d-line (wavelength 587.6 nm) of the resin are 1.582-1.588, Abbe numbers of the resin are≥30 and≤35, and a weight average molecular weight is 40,000-400,000, wherein the weight ratio (A/B) of the polycarbonate resin (A) to the styrene resin (B) is in the range of 40/60-70/30, the thickness in an optical axis direction per one piece is 0.01-30 mm, and the volume is 0.0001-25.0 cm<SP>3</SP>. COPYRIGHT: (C)2009,JPO&INPIT |
