| 摘要 |
PURPOSE:To obtain a lens superior in abrasion resistance hy radically polymerizing a mixture of contg. a styrene type monomer, a specified cross-linkable monomer, and a UV absorber to obtain a lens base, and coating its surface with its surface with a hard coat layer contg. a specified silane compd. and a reflection preventive layer made of an inorganic substance in this order. CONSTITUTION:The lens base 1 is prepared by radically polymerizing a mixture contg. 9-80pts.wt. sytrene type monomer represented by formula I (X is halogen except F, or H; Y is halogen except F; and R is H or CH3; (m) is 1-5; and (n) is 0-3), 20-80pts.wt. cross-linkable monomer represented by formula II, and 0.01-1.0pt.wt. UV absorber, such as benzotriazole. On both surface of the less base 1 are formed a hard coat layer 2 contg. as an essential component a compd. represented by formula III (R' is an org. group having an epoxy group or gamma-methacryloxypropyl; R<2> is H or 1-4C org. group; Z is halogen except F, or alkoxy; and k+l is 0-2), and further, a polyfunctional epoxy compd. and a UV absorber having been hardened, and a reflection preventing layer 3 having SiO2 or ZrO2 or the like vapor deposited. |
