High purity glass bodies formed by zero shrinkage casting
    141.
    发明授权
    High purity glass bodies formed by zero shrinkage casting 失效
    通过零收缩铸造形成的高纯度玻璃体

    公开(公告)号:US06832493B2

    公开(公告)日:2004-12-21

    申请号:US10086231

    申请日:2002-02-27

    CPC classification number: C03B19/06 C03C3/06 C03C2201/42 C03C2203/34

    Abstract: The present invention relates to a method for forming an optical device. The method includes providing a glass aggregate. Typically, the glass aggregate is a mixture of fine glass soot particles and coarser ground or milled glass powder. The glass particles are mixed with a liquid to form a slurry which is cast in a mold to form a porous pre-form. Subsequently, the porous pre-form is consolidated into a glass object by heating the pre-form at a relatively high temperature. The method of the present invention produces optical components having substantially no striae. As a result, scattering is substantially reduced when EUV light is reflected from a component produced from the optical blank.

    Abstract translation: 本发明涉及一种形成光学元件的方法。 该方法包括提供玻璃聚集体。 通常,玻璃聚集体是细玻璃烟灰颗粒和较粗糙的研磨或研磨玻璃粉末的混合物。 将玻璃颗粒与液体混合以形成在模具中铸造以形成多孔预成型体的浆料。 随后,通过在相对高的温度下加热预成型件将多孔预成型件固结成玻璃制品。 本发明的方法产生基本上没有条纹的光学部件。 结果,当EUV光从由光学坯料产生的组分反射时,散射显着降低。

    Method of manufacturing quartz glass for a lamp vessel
    145.
    发明授权
    Method of manufacturing quartz glass for a lamp vessel 失效
    制造灯泡石英玻璃的方法

    公开(公告)号:US5851253A

    公开(公告)日:1998-12-22

    申请号:US734008

    申请日:1996-10-18

    CPC classification number: H01K1/32 C03C3/06 C03C2201/36 C03C2201/42

    Abstract: The electric incandescent lamp has a quartz glass lamp vessel (1) or envelope (4') around the lamp vessel, which has a red coloured dope in the area at the side of the incandescent body (3). The quartz glass with red dope contains samarium.sup.II oxide, aluminium oxide, titanium dioxide, and silicon dioxide, the analysis of the glass in its oxidized form being Sm.sub.2 O.sub.3 1 to 3% by weight, Al.sub.2 O.sub.3 up to 3% by weight, TiO.sub.2, rest SiO.sub.2, the molar ratio Al/Sm being at least about 2 and the molar ratio Sm/Ti being from 2 to 8.

    Abstract translation: 电白炽灯具有在灯泡周围的石英玻璃灯容器(1)或外壳(4'),其在白炽体(3)一侧的区域中具有红色涂料。 具有红色涂料的石英玻璃含有钐II氧化物,氧化铝,二氧化钛和二氧化硅,其氧化形式的玻璃分析为1至3重量%的Sm 2 O 3,3重量%的Al 2 O 3,TiO 2,其余为SiO 2 ,摩尔比Al / Sm为至少约2,摩尔比Sm / Ti为2至8。

    Sol-gel method for making ultra-low expansion glass
    149.
    发明授权
    Sol-gel method for making ultra-low expansion glass 失效
    制造超低膨胀玻璃的溶胶 - 凝胶法

    公开(公告)号:US4786618A

    公开(公告)日:1988-11-22

    申请号:US55632

    申请日:1987-05-29

    Inventor: Robert D. Shoup

    Abstract: Ultra-low thermal expansion TiO.sub.2 --SiO.sub.2 glasses are prepared using a sol-gel process wherein a stable alkali silicate solution comprising colloidal TiO.sub.2 and having a pH above 9 is gelled to form a semisolid silicate gel, the gel comprising homogeneously dispersed colloidal TiO.sub.2 but being essentially free of agglomerated TiO.sub.2 particles, washing the gel with aqueous media to remove alkali therefrom, and finally drying and consolidating the gel to a clear, void-free TiO.sub.2 --SiO.sub.2 glass which is substantially free of compositional inhomogeneities and has a thermal expansion coefficient below that of pure fused silica.

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