Opto-magnetic recording medium
    4.
    发明授权
    Opto-magnetic recording medium 失效
    光磁记录介质

    公开(公告)号:US4579777A

    公开(公告)日:1986-04-01

    申请号:US753041

    申请日:1985-07-02

    摘要: An opto-magnetic recording medium comprises a light-transmitting substrate, a first protective layer comprising a metal film provided in contact with the substrate and transmitting therethrough almost all of a light entering through the substrate, a second protective layer formed of a dielectric material provided on the first protective layer, and a magnetic recording layer provided on the second protective layer and having information recorded or reproduced thereon by the light transmitted through the substrate and the first and second protective layers.

    摘要翻译: 光磁记录介质包括透光基板,第一保护层,其包括设置成与基板接触的金属膜,并且透射通过基板的几乎全部的光,提供由介电材料形成的第二保护层 在第一保护层上设置的磁记录层和设置在第二保护层上的磁记录层,并且通过透过基板和第一和第二保护层的光记录或再现信息。

    Achromatized beam splitter of low polarization
    8.
    发明授权
    Achromatized beam splitter of low polarization 失效
    低极化的消色差分束器

    公开(公告)号:US4415233A

    公开(公告)日:1983-11-15

    申请号:US339659

    申请日:1982-01-15

    IPC分类号: G02B5/04 G02B27/10 G02B5/28

    CPC分类号: G02B27/142 G02B27/144

    摘要: An achromatized beam splitter of a low polarization comprising a transparent first prism, a transparent second prism and a thin film group provided between the first prism and the second prism. The thin film group comprises, in succession from the first prism to the second prism, a first dielectric material thin film layer provided on the inclined surface of the first prism which first layer is a mixture of titanium oxide and zirconium oxide, a metal thin film layer provided on the first dielectric material thin film layer which metal layer consists of silver, and a second dielectric material thin film layer provided on the metal thin film layer which second layer is a mixture of titanium oxide and zirconium oxide. The second dielectric material thin film layer has a film thickness substantially equal to that of the first dielectric material thin film layer.

    摘要翻译: 一种低偏振度的消色差分束器,包括透明第一棱镜,透明第二棱镜和设置在第一棱镜和第二棱镜之间的薄膜组。 薄膜组从第一棱镜到第二棱镜连续地包括设置在第一棱镜的倾斜表面上的第一介电材料薄膜层,第一层是氧化钛和氧化锆的混合物,金属薄膜 设置在该金属层由银组成的第一介电材料薄膜层上的第二介电材料薄膜层和设置在金属薄膜层上的第二介电材料薄膜层,该第二层是氧化钛和氧化锆的混合物。 第二介质材料薄膜层的膜厚基本上等于第一介电材料薄膜层的膜厚度。