公开(公告)号：US20050000250A1

公开(公告)日：2005-01-06

申请号：US10493774

申请日：2002-10-09

申请人： Oliver Humbach ,  Frank Gansicke ,  Dirk Kruber ,  Marcus Dietrich ,  Ralph Sattmann

发明人： Oliver Humbach ,  Frank Gansicke ,  Dirk Kruber ,  Marcus Dietrich ,  Ralph Sattmann

IPC分类号： C03B8/04 ,  C03B19/14 ,  C03B20/00 ,  C03B37/014 ,  C03B19/01 ,  C03B19/06 ,  C03B37/018

CPC分类号： C03B37/0142 ,  C03B19/1423 ,  C03B2207/36 ,  C03B2207/62 ,  C03B2207/66

摘要： In a known method for producing a quartz glass tube by means of flame hydrolysis of a silicon-containing start component, SiO2-containing particles are produced, said particles are deposited on a carrier, forming a soot tube having a porous soot wall with a predetermined radial soot density profile, and the soot tube is treated in a chlorine-containing atmosphere and is then vitrified. To modify said method in such a way that a predetermined radial refractive index distribution is obtained also after dehydration treatment in a chlorine-containing atmosphere, it is suggested according to the invention that the density should be adjusted in such a way that in an inner region of the soot wall it is increased to at least 25% of the density of quartz glass, in an outer region of the soot wall the density is reduced, and in a transition region adjoining the inner region, the density decreases towards the outer region, with the proviso that the transition region extends over at least 75% of the thickness of the soot wall. The inventive tubular semi-finished product is characterized by a soot wall having, in an inner region, a density which is increased to at least 25% of the density of the quartz glass, a reduced density in an outer region, and, in a transition region adjoining the inner region, a density which decreases towards the outer region, said transition region extending over at least 75% of the thickness of the soot wall

摘要翻译： 在通过含硅起始组分的火焰水解生产石英玻璃管的已知方法中，产生含SiO 2的颗粒，所述颗粒沉积在载体上，形成具有预定的多孔烟灰壁的烟灰管 径向烟灰密度分布，烟灰管在含氯气氛中处理，然后玻璃化。 为了改变所述方法，使得在含氯气氛中脱水处理之后也获得预定的径向折射率分布，根据本发明，建议密度应以如下方式进行调整：在内部区域 的烟灰壁增加到石英玻璃的至少25％的密度，在烟灰壁的外部区域中密度降低，并且在与内部区域相邻的过渡区域中，密度朝着外部区域减小， 条件是过渡区域延伸至烟灰壁厚度的至少75％。 本发明的管状半成品的特征在于烟灰壁在内部区域具有增加至至少石英玻璃密度的25％的密度，外部区域的密度降低 过渡区域与内部区域相邻，朝向外部区域减小的密度，所述过渡区域延伸至烟炱壁厚度的至少75％