High purity glass bodies formed by zero shrinkage casting
    223.
    发明申请
    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:US20030159464A1

    公开(公告)日:2003-08-28

    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 producing optical quality glass having a selected refractive
index
    225.
    发明授权
    Method of producing optical quality glass having a selected refractive index 失效
    制备具有选定折射率的光学品质玻璃的方法

    公开(公告)号:US6158244A

    公开(公告)日:2000-12-12

    申请号:US39450

    申请日:1998-03-16

    Abstract: Optical quality glass having a selected refractive index is produced by a two stage drying process. A gel is produced using sol-gel chemistry techniques and first dried by controlled evaporation until the gel volume reaches a pre-selected value. This pre-selected volume determines the density and refractive index of the finally dried gel. The gel is refilled with solvent in a saturated vapor environment, and then dried again by supercritical extraction of the solvent to form a glass. The glass has a refractive index less than the full density of glass, and the range of achievable refractive indices depends on the composition of the glass. Glasses having different refractive indices chosen from an uninterrupted range of values can be produced from a single precursor solution.

    Abstract translation: 具有选择的折射率的光学品质的玻璃是通过两阶段干燥方法制造的。 使用溶胶 - 凝胶化学技术制备凝胶,并首先通过受控蒸发干燥直到凝胶体积达到预先选择的值。 该预选择的体积确定最终干燥的凝胶的密度和折射率。 在饱和蒸汽环境中用溶剂重新填充凝胶,然后通过超临界萃取溶剂再次干燥以形成玻璃。 玻璃的折射率小于玻璃的全密度,可实现折射率的范围取决于玻璃的组成。 可以从单一前体溶液产生具有从不间断值范围选择的折射率不同的玻璃。

    Fluorescence-suppressed quartz glass, and electric lamp with this quartz
glass
    226.
    发明授权
    Fluorescence-suppressed quartz glass, and electric lamp with this quartz glass 失效
    荧光抑制石英玻璃,和这种石英玻璃的电灯

    公开(公告)号:US5808411A

    公开(公告)日:1998-09-15

    申请号:US759439

    申请日:1996-12-05

    Abstract: To inhibit, or at least sharply attenuate, fluorescence of a quartz-glass velope (10) surrounding a light source (11), such as a halogen incandescent lamp, a high-pressure discharge lamp, or the like, when the quartz glass is subjected to ultraviolet (UV) radiation from the light source, and has been doped with a UV radiation absorbing material, typically a cerium, or cerium-titanium doping, the quartz-glass envelope is additionally doped with barium and boron. The barium/boron in the doping is, preferably, present in quantities of between about 0.008 and 1.25%, by weight, with reference to the undoped quartz glass. Barium metaborate can be used, optionally together with praseodymium to attenuate the fluorescence. Preferably, barium and boron form a combined doping substance with cerium, in form of a cerium aluminate and metaborate, added to the starting material for the quartz glass, and before the quartz glass is fused from quartz sand or pulverized quartz crystal.

    Abstract translation: 为了抑制或至少急剧衰减围绕光源(11)的石英玻璃外壳(10)的荧光,例如卤素白炽灯,高压放电灯等,当石英玻璃是 经受来自光源的紫外(UV)辐射,并且已经掺杂有紫外线吸收材料,通常为铈或铈 - 钛掺杂,石英玻璃外壳另外掺杂有钡和硼。 相对于未掺杂的石英玻璃,掺杂中的钡/硼优选以约0.008和1.25重量%的量存在。 可以使用偏硼酸钡,任选地与镨一起减弱荧光。 优选地,钡和硼与被添加到石英玻璃的起始材料中以及石英玻璃从石英砂或粉碎的石英晶体熔融之前形成具有铈铝酸盐和偏硼酸铈形式的铈的组合掺杂物质。

    Quartz glass with reduced ultraviolet radiation transmissivity, and
electrical discharge lamp using such glass
    227.
    发明授权
    Quartz glass with reduced ultraviolet radiation transmissivity, and electrical discharge lamp using such glass 失效
    具有降低的紫外线透射率的石英玻璃和使用这种玻璃的放电灯

    公开(公告)号:US5572091A

    公开(公告)日:1996-11-05

    申请号:US442831

    申请日:1995-05-17

    Abstract: Ultraviolet (UV) radiation in the UV-C and UV-B bands, which is particularly dangerous, is absorbed and filtered by quartz glass doped with between 0.065% and 3.25%, and preferably between 0.065% and 1.3% by weight, of cerium metal, or cerium as such. Preferably, the cerium is added to quartz sand and/or rock crystal, in form of a fine-grained powder of up to 2 0 .mu.m grain size, in form of cerium aluminate (CeAlO.sub.3), present in up to about 5% by weight, and preferably up to about 2%, and melted together in a single step. The quartz glass so obtained is particularly suitable for a metal halide discharge lamp, e.g. as an outer envelope (1), or as the discharge vessel (27) itself, or for halogen incandescent lamps, to form the quartz-glass light bulb or an envelope therefor. A small quantity of titanium oxide, up to about 0.05%, may be added as a further doping agent to the melt to further improve the UV absorption in the B and C bands.

    Abstract translation: 特别危险的UV-C和UV-B带中的紫外线(UV)辐射被掺入0.065%至3.25%,优选0.065%至1.3%重量的铈的石英玻璃吸收和过滤 金属或铈。 优选地,将铈以石灰砂和/或岩石晶体的形式加入石英砂和/或岩石晶体,其形式为以铝酸铈(CeAlO 3)的形式存在的至多约0%的晶粒尺寸的细粒粉末,其以至多约5%的比例存在, 重量,优选高达约2%,并在一个步骤中熔融在一起。 如此获得的石英玻璃特别适用于金属卤化物放电灯,例如, 作为外封套(1),或作为放电容器(27)本身,或用于卤素白炽灯,以形成石英玻璃灯泡或其封套。 可以将少量至多约0.05%的氧化钛作为另外的掺杂剂加入到熔体中以进一步提高B和C带中的UV吸收。

    Apparatus for producing and casting liquid silicon
    229.
    发明授权
    Apparatus for producing and casting liquid silicon 失效
    用于生产和浇铸液态硅的设备

    公开(公告)号:US4272488A

    公开(公告)日:1981-06-09

    申请号:US075644

    申请日:1979-09-14

    Abstract: The method and apparatus for producing liquid silicon of high purity and for casting silicon. Hydrogen and a hydrogenated silane in gaseous state are mixed, preferably with a source of a small amount of oxygen, in a heated chamber producing the liquid silicon, with the exhaust gases bubbling out of the melt under a baffle. The chamber for the melt of liquid silicon preferably is lined with silicon dioxide. The liquid silicon may be used in making high purity vitreous silica and may be used in making castings of silicon. In making castings, the liquid silicon is accumulated in a second chamber and is periodically drawn from the second chamber into a third chamber which contains the mold for the casting.

    Abstract translation: 用于生产高纯度硅和硅铸造液态硅的方法和装置。 氢气和气态的氢化硅烷在产生液体硅的加热室中混合,优选用少量氧气源,废气在挡板下方从熔体中冒出。 用于液体硅熔体的室优选用二氧化硅衬里。 液硅可用于制造高纯度二氧化硅玻璃,可用于制造硅铸件。 在制造铸件时,液态硅积聚在第二腔室中,并且从第二腔室周期性地拉入包含用于铸造的模具的第三腔室。

    Process for producing liquid silicon
    230.
    发明授权
    Process for producing liquid silicon 失效
    液硅生产工艺

    公开(公告)号:US4176166A

    公开(公告)日:1979-11-27

    申请号:US800191

    申请日:1977-05-25

    Abstract: The method and apparatus for producing liquid silicon of high purity and for casting silicon. Hydrogen and a hydrogenated silane in gaseous state are mixed, preferably with a source of a small amount of oxygen, in a heated chamber producing the liquid silicon, with the exhaust gases bubbling out of the melt under a baffle. The chamber for the melt of liquid silicon preferably is lined with silicon dioxide. The liquid silicon may be used in making high purity vitreous silica and may be used in making castings of silicon. In making castings, the liquid silicon is accumulated in a second chamber and is periodically drawn from the second chamber into a third chamber which contains the mold for the casting.

    Abstract translation: 用于生产高纯度硅和硅铸造液态硅的方法和装置。 氢气和气态的氢化硅烷在产生液体硅的加热室中混合,优选用少量氧气源,废气在挡板下方从熔体中冒出。 用于液体硅熔体的室优选用二氧化硅衬里。 液硅可用于制造高纯度二氧化硅玻璃,可用于制造硅铸件。 在制造铸件时,液态硅积聚在第二腔室中,并且从第二腔室周期性地拉入包含用于铸造的模具的第三腔室。

Patent Agency Ranking