Optical component containing a maximum of 200 wt.-ppm of chlorine
    95.
    发明授权
    Optical component containing a maximum of 200 wt.-ppm of chlorine 有权
    含有最多200重量ppm氯的光学元件

    公开(公告)号:US06289161B1

    公开(公告)日:2001-09-11

    申请号:US09198883

    申请日:1998-11-23

    Abstract: In a known optical component a cylindrical glass core of synthetic quartz glass contains hydroxyl groups, a maximum 200 wt.-ppm of chlorine, and no dopant in the form of a metal oxide. The glass core is axially enveloped by a glass mantle of doped quartz glass which has a lower refractive index than the glass core. Setting out from this, in order to offer an optical component of quartz glass for broad-band transmission, especially for broad-band spectroscopy, which is characterized by low attenuation over a broad range of wavelengths, it is proposed by the invention that the core glass contain less than 5 wt.-ppm of hydroxyl groups.

    Abstract translation: 在已知的光学组件中,合成石英玻璃的圆柱形玻璃芯包含羟基,最大为200重量ppm的氯,并且不含金属氧化物形式的掺杂剂。 玻璃芯由掺杂石英玻璃的玻璃罩轴向包围,折射率比玻璃芯低。 从此出发,为了提供用于宽带传输的石英玻璃的光学部件,特别是对于在宽波长范围内具有低衰减特征的宽带光谱,本发明提出了核心 玻璃含有小于5重量ppm的羟基。

    Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass
    96.
    发明授权
    Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass 失效
    真空紫外透射硅氧氟硅光刻玻璃

    公开(公告)号:US06242136B1

    公开(公告)日:2001-06-05

    申请号:US09397573

    申请日:1999-09-16

    Abstract: High purity silicon oxyfluoride glass suitable for use as a photomask substrates for photolithography applications in the VUV wavelength region below 190 nm is disclosed. The inventive silicon oxyfluoride glass is transmissive at wavelengths around 157 nm, making it particularly useful as a photomask substrate at the 157 nm wavelength region. The inventive photomask substrate is a “dry,” silicon oxyfluoride glass which exhibits very high transmittance in the vacuum ultraviolet (VUV) wavelength region while maintaining the excellent thermal and physical properties generally associated with high purity fused silica. In addition to containing fluorine and having little or no OH content, the inventive silicon oxyfluoride glass suitable for use as a photomask substrate at 157 nm is also characterized by having less than 1×1017 molecules/cm3 of molecular hydrogen and low chlorine levels.

    Abstract translation: 公开了适用于在低于190nm的VUV波长区域中用于光刻应用的光掩模基板的高纯度氟氧化硅玻璃。 本发明的氟氧化硅玻璃在157nm波长下是透射的,使其特别适用于157nm波长区域的光掩模衬底。 本发明的光掩模基材是“真空”的氟氧化硅玻璃,其在真空紫外(VUV)波长区域中表现出非常高的透射率,同时保持通常与高纯度熔融石英相关的优异的热和物理性能。 除了含氟并且具有很少或不含OH含量之外,本发明的适合用作157nm的光掩模衬底的氟氧化硅玻璃的特征还在于具有小于1×10 17分子/ cm 3的分子氢和低氯水平。

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