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公开(公告)号：US20170369359A1
公开(公告)日：2017-12-28
申请号：US15634634
申请日：2017-06-27
发明人： Hardy BAIERL , Stephan GRIMM , Kay SCHUSTER , Jan DELLITH , Andreas LANGNER , Gerhard SCHOETZ , Walter LEHMANN , Thomas KAYSER
CPC分类号： C03C3/06 , C03B19/066 , C03B20/00 , C03B32/00 , C03B2201/12 , C03B2201/20 , C03B2201/34 , C03B2201/36 , C03C2201/32 , C03C2201/3488 , C03C2203/52 , H01S3/17
摘要： A method for producing rare earth metal-doped quartz glass includes the steps of (a) providing a blank of the rare earth metal-doped quartz glass, and (b) homogenizing the blank by softening the blank zone by zone in a heating zone and by twisting the softened zone along a rotation axis. Some rare earth metals, however, show a discoloration of the quartz glass, which hints at an unforeseeable and undesired change in the chemical composition or possibly at an inhomogeneous distribution of the dopants. To avoid this drawback and to provide a modified method which ensures the production of rare earth metal-doped quartz glass with reproducible properties, during homogenization according to method step (b), the blank is softened under the action of an oxidizingly acting or a neutral plasma.
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公开(公告)号：US20190062198A1
公开(公告)日：2019-02-28
申请号：US16061122
申请日：2016-12-16
IPC分类号： C03C3/06 , C03B20/00 , C03B37/027 , C03B19/06 , C03C25/1065 , C03B37/012 , C03C13/04 , G02B6/02
CPC分类号： C03C3/06 , C03B19/066 , C03B19/108 , C03B19/1095 , C03B20/00 , C03B37/01211 , C03B37/027 , C03B2201/03 , C03B2201/04 , C03C1/026 , C03C13/045 , C03C25/1065 , C03C2201/11 , C03C2201/23 , C03C2201/32 , C03C2203/10 , C03C2213/00 , G02B6/02042 , G02B6/02395
摘要： One aspect relates to a light guide comprising a jacket and one or more cores, wherein the jacket surrounds the cores. Each core has a refractive index profile perpendicular to the maximum extension of the core, wherein at least one refractive index nK of each refractive index profile is greater than the refractive index nM1 of the jacket. The jacket is made of silicon dioxide and has an OH content of less than 10 ppm, a chlorine content of less than 60 ppm, and an aluminium content of less than 200 ppb. One aspect also relates to a silicon dioxide granulate I, characterized by a chlorine content of less than 200 ppm and an aluminium content of less than 200 ppb, in each case based on the total weight of the silicon dioxide granulate I.
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3.发明申请METHOD FOR PRODUCING SYNTHETIC QUARTZ GLASS OF SIO2 GRANULATE AND SIO2 GRANULATE SUITED THEREFOR 审中-公开生产SIO2颗粒和SIO2颗粒的合成石英玻璃的方法公开(公告)号：US20160090319A1
公开(公告)日：2016-03-31
申请号：US14864103
申请日：2015-09-24
发明人： Achim HOFMANN , Thomas KAYSER , Matthias OTTER , Bodo KÜHN
CPC分类号： C03B19/066 , C03B19/108 , C03B19/1095 , C03B2201/02 , C03C3/06 , C03C11/00 , C03C12/00 , C03C2201/02
摘要： A method for producing synthetic quartz glass by fusion of SiO2 granulate involves synthesizing amorphous SiO2 primary particles, granulating the amorphous SiO2 primary particles to form an open-pore SiO2 granulate, sintering the open-pore SiO2 granulate by heating in a sintering atmosphere at a sintering temperature and for a sintering period to form a densified SiO2 granulate, and melting the densified SiO2 granulate at a melting temperature to form the synthetic quartz glass. To provide an inexpensive production of low-bubble transparent components of quartz glass despite the use of still open-pore SiO2 granulate, the sintering atmosphere, sintering temperature and sintering duration are adjusted such that the densified SiO2 granulate still comprises open pores but manifests a material-specific infrared transmission T1700 at a wavelength of 1700 nm. This transmission is in the range of 50-95% of the infrared transmission T1700 of quartz glass granules of the same material.
摘要翻译： 通过SiO 2颗粒熔融制造合成石英玻璃的方法包括合成无定形SiO 2一次颗粒，造粒无定形SiO 2一次颗粒以形成开孔SiO 2颗粒，通过在烧结气氛中加热烧结开孔SiO 2颗粒 温度和烧结时间以形成致密化的SiO 2颗粒，并且在熔融温度下熔化致密的SiO 2颗粒以形成合成石英玻璃。 尽管使用仍然是开孔的SiO 2颗粒，为了提供石英玻璃的低气泡透明组分的廉价生产，调节烧结气氛，烧结温度和烧结持续时间，使得致密的SiO 2颗粒仍然包括开孔，但表现出一种材料 特定的红外透射T1700，波长为1700nm。 该透射率在相同材料的石英玻璃颗粒的红外透射率T1700的50-95％的范围内。
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4.发明申请公开(公告)号：US20190077672A1
公开(公告)日：2019-03-14
申请号：US16062234
申请日：2016-12-16
发明人： Matthias OTTER , Walter LEHMANN , Michael HÜNERMANN , Nils Christian NIELSEN , Nigel Robert WHIPPEY , Boris GROMANN , Abdoul-Gafar KPEBANE , Thomas KAYSER
摘要： One aspect is a process for the preparation of a quartz glass body including providing a silicon dioxide granulate wherein the provision includes providing silicon dioxide powder, and processing the silicon dioxide powder to obtain a silicon dioxide granulate. The silicon dioxide granulate has a larger particle diameter than the silicon dioxide powder. The processing includes processing the silicon dioxide powder to obtain a silicon dioxide granulate I, wherein the silicon dioxide granulate I has a first carbon content wC(1), treating the silicon dioxide granulate I with a reactant to obtain a silicon dioxide granulate II with a further carbon content wC(2), wherein the further carbon content wC(2) is less than the first carbon content wC(1), making a glass melt out of the silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt.
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公开(公告)号：US20190062194A1
公开(公告)日：2019-02-28
申请号：US16062248
申请日：2016-12-16
发明人： Matthias OTTER , Walter LEHMANN , Michael HÜNERMANN , Nils Christian NIELSEN , Nigel Robert WHIPPEY , Boris GROMANN , Abdoul-Gafar KPEBANE , Thomas KAYSER
IPC分类号： C03B20/00 , C03B17/04 , C03B37/012 , C03B37/027 , C03C3/06 , C01B33/12 , H01J61/30 , H01J9/24 , G02B6/02
摘要： The invention relates to a process for the preparation of a quartz glass body comprising the process steps i.) Providing a silicon dioxide granulate, ii.) Making a glass melt out of the silicon dioxide granulate and iii) Making a quartz glass body out of at least part of the glass melt, wherein the provision comprises the steps I. Providing a silicon dioxide powder with at least two particles made from a silicon-chlorine compound, II. Bringing the silicon dioxide powder into contact with steam to obtain a treated silicon dioxide powder and III. Granulating the treated silicon dioxide powder to obtain a silicon dioxide granulate, and wherein the chorine content of the silicon dioxide powder is greater than the chlorine content of the silicon dioxide granulate. The invention further relates to a quartz glass body which is obtainable by this process. The invention further relates to a process for providing a silicon dioxide granulate. The invention further relates to a light guide, an illuminant and a formed body, which are each obtainable by further processing of the quartz glass body.
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公开(公告)号：US20190055150A1
公开(公告)日：2019-02-21
申请号：US16061185
申请日：2016-12-16
摘要： One aspect relates to a process for the preparation of a quartz glass body, including providing a silicon dioxide granulate composed of a pyrogenic silicon dioxide powder, making a glass melt out of the silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt. The quartz glass body has an OH content of less than 10 ppm, a chlorine content of less than 60 ppm and an aluminium content of less than 200 ppb. One aspect also relates to a quartz glass body which is obtainable by this process. Furthermore, one aspect relates to a formed body and a structure, each of which is obtainable by further processing of the quartz glass body.
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公开(公告)号：US20180370838A1
公开(公告)日：2018-12-27
申请号：US16062280
申请日：2016-12-16
发明人： Matthias OTTER , Walter LEHMANN , Michael HÜNERMANN , Nils Christian NIELSEN , Nigel Robert WHIPPEY , Boris GROMANN , Abdoul-Gafar KPEBANE , Thomas KAYSER
摘要： One aspect relates to a process for the preparation of a quartz glass body, including provision of a silicon dioxide granulate, making a glass melt from the silicon dioxide granulate and making a quartz glass body from at least part of the glass melt. The provision includes making a silicon dioxide powder with at least two particles prepared from a silicon-chlorine compound, bringing the silicon dioxide powder into contact with ammonia to obtain a treated silicon dioxide powder, and granulating the treated silicon dioxide powder to obtain a silicon dioxide granulate. The chlorine content of the silicon dioxide powder is greater than the chlorine content of the silicon dioxide granulate. One aspect relates further to a quartz glass body which is obtainable by this process. One aspect also relates to a process for the preparation of a silicon dioxide granulate.
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