Polarizer for visible light
    3.
    发明授权
    Polarizer for visible light 失效
    偏光镜为可见光

    公开(公告)号:US5087985A

    公开(公告)日:1992-02-11

    申请号:US465196

    申请日:1990-02-13

    IPC分类号: G02B1/08 G02B5/30

    CPC分类号: G02B1/08 G02B5/30 G02B5/3033

    摘要: The present invention concerns a polarizer for visible light, comprising a polyvinyl alcohol-based polarizing element wherein not less than 60% of dichromophore is iodine, and a protective film. The said polarizing element has at least three absorption bands in an ultraviolet region of 210 nm to 400 nm and also has a UA value of not smaller than 4.0 which value represents ultraviolet absorption characteristics. Consequently, the polarizer of the invention possesses both superior polarization characteristics and high heat and humidity resistance. The polarizer of the invention having these characteristics is used for liquid crystal display and is suitable particularly for such uses as display in watches and electronic calculators, terminal dispaly in personal computers and word processor, picture display in portable television sets, and display in automobiles and aircraft.