| 摘要 |
PROBLEM TO BE SOLVED: To provide spectacle lenses with antireflection films having the appearance equal to the appearance of conventional spectacle lenses and antireflection function and further, having an electromagnetic wave shielding function. SOLUTION: The spectacle lens 1A with the antireflection films is constituted by providing the spectacle lens 2 having a refractive index of 1.55 to 1.75 with a reflection preventive film 9 composing a layer 3 consisting of SiO2 of an optical film thickness 46 to 60 nm as the first layer of the layer nearest the spectacle lens face, a layer 4 consisting of an ITO film of an optical film thickness 65 to 79 nm as a second layer, a layer 5 consisting of SiO2 of an optical film thickness 18 to 22 nm as a third layer, a layer 6 consisting of a material contg. at least one among TiO2 , ZrO2 , Ta2 O5 of an optical film thickness 200 to 254 nm as a fourth layer and a layer 7 consisting of SiO2 of an optical film thickness 105 to 126 nm as a fifth layer. The spectacle lens 2 may be provided with a hard-coating layer 8. |
