There is provided a polycarbonate lens having improved transmittance of light with a wavelength of 400 nm. This lens is made of a polycarbonate derived from 1,1-bis(4-hydroxyphenyl)-1-phenylethane, specific viscosity found from a solution of 0.7 g of said polycarbonate in 100 ml of methylene chloride being 0.176 to 0.295, and transmittance of light with a wavelength of 400 nm passing through a 3 mm thick member molded from said polycarbonate being 80 % or more.
本发明提供了一种聚
碳酸酯镜片,其波长为 400 纳米的光的透射率有所提高。这种镜片由 1,1-双(
4-羟基苯基)-1-苯基
乙烷衍生的聚
碳酸酯制成,从 0.7 克所述聚
碳酸酯在 100 毫升
二氯甲烷中的溶液中测得的比粘度为 0.176 至 0.295,波长为 400 纳米的光通过由所述聚
碳酸酯模制的 3 毫米厚部件的透射率为 80%或以上。