Abstract:
PROBLEM TO BE SOLVED: To provide a production method for quartz glass by which a quartz glass material whose optical properties does not change or changes little in long-term use can be formed. SOLUTION: The production method produces a quartz glass material which exhibits high resistance to radiation-induced density change when irradiated with ultraviolet rays having a wavelength of around 193 nm and an energy density almost the same as the processing energy density of an optical system for microlithography. The method minimizes the amount of peroxo-group defects in the quartz glass material and suppresses the generation of closely adjacent hydroxy groups, i.e. an essential cause of radiation-induced density decrease. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract in simplified Chinese:本发明提供一种借由熔合SiO2粒子产制不透明合成石英玻璃的已知方法,其包含以下方法步骤:合成非晶SiO2初始颗粒;粒化该等非晶SiO2初始颗粒以便形成开孔SiO2粒子;借由在烧结氛围中在烧结温度下并持续一定烧结时间段加热来烧结该开孔SiO2粒子以便形成经致密化之SiO2粒子;及在熔融温度下熔融该经致密化之SiO2粒子以便形成该合成石英玻璃。以此起始,为指示一种尽管使用仍开孔SiO2粒子,但准许低价产制石英玻璃之低气泡透明组件的方法,根据本发明建议,在根据方法步骤(c)之烧结期间,调整烧结氛围、烧结温度及烧结持续时间,使得该经致密化之SiO2粒子一方面仍包含开孔,且另一方面在波长1700nm下显示材料特异性红外线透射T1700,该透射在相同材料之石英玻璃小颗粒之红外线透射T1700之50-95%范围内。
Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Quarzglaskörpers beinhaltend die Verfahrensschritte i.) Bereitstellen eines Siliziumdioxidgranulats, ii.) Bilden einer Glasschmelze aus dem Siliziumdioxidgranulat in einem Schmelztiegel und iii.) Bilden eines Quarzglaskörpers aus zumindest einem Teil der Glasschmelze, wobei der Schmelztiegel in einem Ofen enthalten ist und aus mindestens einem Material beinhaltend Wolfram oder Molybdän oder eine Kombination davon besteht. Die Erfindung betrifft weiterhin einen Quarzglaskörper, der durch dieses Verfahren erhältlich ist. Weiterhin betrifft die Erfindung einen Lichtleiter, ein Leuchtmittel und einen Formkörper, die jeweils durch Weiterverarbeiten des Quarzglaskörpers erhältlich sind.
Abstract:
Embodiments of the invention relate to a hydrogen-resistant optical fiber with a core having a central axis. The core may include only silica, or only silica and fluorine, while a cladding region surrounding the core may be made of silica and fluorine, along with at least one of germanium, phosphorus, and titanium.
Abstract:
A method for forming high purity silica articles. The high purity silica articles can be particularly suitable for forming packaging such as packaging for pharmaceutical applications. The method for forming high purity silica articles can comprise, in one embodiment, (a) forming a fused quartz melt from a SiO 2 raw material; (b) forming a quartz tube from the fused quartz melt; (c) treating the quartz tube with an acid composition; (d) heat treating the quartz tube subsequent to treating with the acid composition; and (e) optionally treating the quartz article with an acid composition subsequent to the heat treating operation. The method can enhance the purity of silica glass articles and products made therefrom.