| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of an ultraviolet absorbable plastic lens by which a composition for a plastic lens containing an ultraviolet absorbent and a photopolymerization initiator having absorption characteristic in a visible light region can be uniformly photopolymerized. SOLUTION: As a light source for photopolymerization, light sources 11, 12 having spectral energy distribution in which energy concentrates in 400 to 450 nm wavelength region, are used. A metal halide lamp in which gallium halide, for example, is added is used as the light source. COPYRIGHT: (C)2004,JPO&NCIPI
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