Silica glass and optical material
    1.
    发明授权
    Silica glass and optical material 失效
    二氧化硅玻璃和光学材料

    公开(公告)号:US07585800B2

    公开(公告)日:2009-09-08

    申请号:US11962936

    申请日:2007-12-21

    IPC分类号: C03C3/06 C03B20/00 H05B33/10

    摘要: It is to obtain a silica glass suitable as a material for an optical material constituting an optical system to be used for EUVL, which has a low coefficient of thermal expansion from 0 to 100° C., and on which formation of concave defects is suppressed in a polishing step to achieve a high level of flatness.A silica glass containing from 0.1 to 10 mass % of Sn calculated as SnO2 and from 3 to 10 mass % of Ti calculated as TiO2, which has a homogeneity of the coefficient of thermal expansion from 0 to 100° C. to the temperature of from 50 to 200 ppb/° C., a coefficient of thermal expansion from 0 to 100° C. of 0±250 ppb/° C., and a Vickers hardness of at most 650.

    摘要翻译: 获得适合作为构成用于EUVL的光学系统的光学材料的石英玻璃,其具有0至100℃的低热膨胀系数,并且其中凹陷缺陷的形成被抑制 在抛光步骤中达到高水平的平整度。 含有0.1〜10质量%的以SnO 2计的Sn和3〜10质量%的作为TiO 2计算的Ti的二氧化硅玻璃,其具有0〜100℃的热膨胀系数的均匀性 50至200ppb /℃,0至100ppb /℃的0至100℃的热膨胀系数,以及至多650的维氏硬度。

    SILICA GLASS AND OPTICAL MATERIAL
    2.
    发明申请
    SILICA GLASS AND OPTICAL MATERIAL 失效
    二氧化硅玻璃和光学材料

    公开(公告)号:US20080103038A1

    公开(公告)日:2008-05-01

    申请号:US11962936

    申请日:2007-12-21

    IPC分类号: C03C3/06 C03C3/076

    摘要: It is to obtain a silica glass suitable as a material for an optical material constituting an optical system to be used for EUVL, which has a low coefficient of thermal expansion from 0 to 100° C., and on which formation of concave defects is suppressed in a polishing step to achieve a high level of flatness. A silica glass containing from 0.1 to 10 mass % of Sn calculated as SnO2 and from 3 to 10 mass % of Ti calculated as TiO2, which has a homogeneity of the coefficient of thermal expansion from 0 to 100° C. to the temperature of from 50 to 200 ppb/° C., a coefficient of thermal expansion from 0 to 100° C. of 0±250 ppb/° C., and a Vickers hardness of at most 650.

    摘要翻译: 获得适合作为构成用于EUVL的光学系统的光学材料的石英玻璃,其具有0至100℃的低热膨胀系数,并且其中凹陷缺陷的形成被抑制 在抛光步骤中达到高水平的平整度。 含有0.1〜10质量%的以SnO 2 2计的Sn和3〜10质量%的TiO 2计算的二氧化硅玻璃,其Ti均匀度为 热膨胀系数为0〜100℃,温度为50〜200ppb /℃,0〜100℃的热膨胀系数为0±250ppb /℃,Vickers 硬度至多650。