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    WDM optical filter and glass substrate for use in a WDM optical filter
    1.
    发明公开
    WDM optical filter and glass substrate for use in a WDM optical filter 有权
    WDM Optischer Filter和Glassubstratfürdie Verwendung in einem WDM optischen Filter

    公开(公告)号：EP1074519A2

    公开(公告)日：2001-02-07

    申请号：EP00116170.2

    申请日：2000-08-01

    申请人： HOYA CORPORATION ,  HOYA CORPORATION USA

    发明人： Johnson, Robert W. ,  Yanagita, Hiroaki ,  Hashimoto, Kazuaki

    IPC分类号： C03C3/078 ,  C03C3/083 ,  G02B6/34

    CPC分类号： G02B5/285 ,  C03C3/078 ,  C03C3/083 ,  G02B5/288 ,  G02B6/29367 ,  G02B6/2938 ,  G02B7/008

    摘要： A glass substrate is for use in a WDM optical filter which has an optical multilayer coated on the glass substrate and is formed by glass which has a composition related to the optical multilayer so as to assure stable multiplexing/demultiplexing operation in the optical filter. The glass includes SiO 2 as a glass network-former and has an average linear thermal expansion coefficient between 100 x 10 -7 /K and 130 x 10 -7 /K within a temperature range between -30 °C and +70 °C. The glass may include TiO 2 , Al 2 O 3 , and R 2 O(R: alkali metal element) in addition to SiO 2 and may have a hardness suitable for the optical multilayer.

    摘要翻译： 玻璃基板用于WDM滤光器，其具有涂覆在玻璃基板上的光学多层膜，并且由具有与光学多层相关的组成的玻璃形成，从而确保滤光器中的稳定的多路复用/解复用操作。 该玻璃包括SiO 2作为玻璃网络形成剂，并且在-30℃至+ 70℃的温度范围内具有100×10 -7 / K至130×10 -7 / K的平均线性热膨胀系数 除了SiO2之外，玻璃可以包括TiO 2，Al 2 O 3和R 2 O（R：碱金属元素），并且可以具有适合于光学多层的硬度。