METHOD FOR PRODUCING A LARGE QUARTZ-GLASS TUBE
    155.
    发明申请
    METHOD FOR PRODUCING A LARGE QUARTZ-GLASS TUBE 审中-公开
    用于生产大型石英玻璃管的方法

    公开(公告)号:US20160168005A1

    公开(公告)日:2016-06-16

    申请号:US14904308

    申请日:2014-07-08

    Abstract: A method for producing a large quartz-glass pipe is provided. In a first forming step, an intermediate cylinder made of quartz glass and having an intermediate-cylinder wall thickness and outside diameter is formed by using a forming tool and is then cooled. In a second shaping step, at least one length segment of the cooled intermediate cylinder is fed to a heating zone, heated to a softening temperature zone by zone therein, and, while rotating about the longitudinal axis of the intermediate cylinder, shaped into the large quartz-glass pipe having a final wall thickness and outside diameter. The quartz glass is synthetically produced and has an average hydroxyl group content of 10 ppm by weight or less. If the intermediate cylinder is divided into length segments of 1 cm, adjacent length segments have a difference of less than 2 ppm by weight in the average hydroxyl group content thereof.

    Abstract translation: 提供一种生产大型石英玻璃管的方法。 在第一成形步骤中,通过使用成形工具形成由石英玻璃制成并具有中间筒壁厚和外径的中间圆筒,然后冷却。 在第二成形步骤中,冷却的中间圆筒的至少一个长度段被供给到加热区,通过其中的区域被加热到软化温度区域,并且围绕中间圆柱体的纵向轴线旋转,成形为大的 具有最终壁厚和外径的石英玻璃管。 合成生产石英玻璃,其平均羟基含量为10重量ppm以下。 如果中间圆筒被分成1cm的长度段,则相邻长度段的平均羟基含量的差异小于2ppm。

    Synthesized silica glass for optical component
    158.
    发明授权
    Synthesized silica glass for optical component 有权
    用于光学部件的合成石英玻璃

    公开(公告)号:US08498056B2

    公开(公告)日:2013-07-30

    申请号:US13367780

    申请日:2012-02-07

    CPC classification number: C03B19/1453 C03B2201/04 G03F7/70966 Y02P40/57

    Abstract: The present invention provides a synthetic silica glass for an optical member in which not only a fast axis direction in an optical axis direction is controlled, and a birefringence in an off-axis direction is reduced, but a magnitude of a birefringence in the optical axis direction is controlled to an arbitrary value, such that an average value of a value BR cos2θxy defined from a birefringence BR and a fast axis direction θxy as measured from a parallel direction to the principal optical axis direction is defined as an average birefringence AveBR cos2θxy, and when a maximum value of a birefringence measured from a vertical direction to the principal optical axis direction of the optical member is defined as a maximum birefringence BRmax in an off-axis direction, the following expression (1-1) and expression (2-1) are established: −1.0≦AveBR cos2θxy

    Abstract translation: 本发明提供一种用于光学构件的合成石英玻璃,其不仅控制光轴方向上的快轴方向,并且减少偏轴双折射,而且在光轴上具有双折射的大小 方向被控制为任意值,使得从平行方向到主光轴方向测量的从双折射BR和快轴方向三角形定义的值BR cos2thetaxy的平均值被定义为平均双折射AveBR cos2thetaxy, 并且当将从光学构件的垂直方向到主光轴方向测量的双折射的最大值定义为离轴方向上的最大双折射BRmax时,下列表达式(1-1)和表达式(2- 1)建立:-1.0@AveBR cos2thetaxy <0.0(1-1)0.0 @ BRmax @ 1.0(2-1)。

    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method
    160.
    发明授权
    Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method 有权
    通过使用等离子体辅助沉积法从合成石英玻璃制造空白模具的方法和装置

    公开(公告)号:US08336337B2

    公开(公告)日:2012-12-25

    申请号:US10519016

    申请日:2003-07-07

    Abstract: The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a glass starting material and a carrier gas is fed to a multi-nozzle deposition burner. The glass starting material is introduced into a plasma zone by the deposition burner and is oxidized therein while forming SiO2 particles, and the SiO2 particles are deposited on a deposition surface while being directly vitrified. In order to increase the deposition efficiency, the invention provides that the deposition burner (1) focuses the media flow toward the plasma zone (4) by. A multi-nozzle plasma burner, which is suited for carrying out the method and which is provided with a media nozzle for feeding a media flow to the plasma zone, is characterized in that the media nozzle (7) is designed so that it is focussed toward the plasma zone (4). The focussing is effected by a tapering (6) of the media nozzle (7).

    Abstract translation: 本发明涉及一种通过使用等离子体辅助沉积方法从合成石英玻璃制造空白模具的方法,根据该方法,将含有玻璃原料和载气的无氢介质流进料到多喷嘴沉积 刻录机。 玻璃原料通过沉积燃烧器引入等离子体区域,并在其中被氧化,同时形成SiO 2颗粒,并且SiO 2颗粒沉积在沉积表面上同时被直接玻璃化。 为了提高沉积效率,本发明提供了沉积燃烧器(1)将介质流聚焦到等离子体区(4)。 适用于执行该方法并且具有用于将介质流供给到等离子体区域的介质喷嘴的多喷嘴等离子燃烧器的特征在于,介质喷嘴(7)被设计成使其聚焦 朝向等离子体区(4)。 聚焦由介质喷嘴(7)的锥形(6)实现。

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