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1. 发明授权

US12060293B2 Process for the preparation of synthetic quartz glass 有权
公开(公告)号：US12060293B2
公开(公告)日：2024-08-13
申请号：US17553270
申请日：2021-12-16
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Martin Thürer , Walter Lehmann , Martin Trommer
IPC分类号： C03B19/14 , C03C3/06
CPC分类号： C03B19/1423 , C03C3/06 , C03B2207/36
摘要： Described is a method of producing synthetic fused silica in which the synthetic flame used in the method has a ratio of the Full Width at Half Maximum (FWHMvert) vertical luminous intensity to the Full Width at Half Maximum (FWHMhori) horizontal luminous intensity greater than 10 in a targetless state, the luminous intensities being measured in candela/mm2.

2. 发明申请

US20220357506A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220357506A1
公开(公告)日：2022-11-10
申请号：US17619980
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG
发明人： Manuel Rosenberger , Martin Trommer , Steffen Weimann , Michael Hünermann , Kay Schuster
IPC分类号： G02B6/02 , G02B6/032 , C03B37/012 , C03B37/027
摘要： Methods are known for producing an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; providing a number of tubular anti-resonant element preforms; arranging the anti-resonant element preforms at target positions of the interior of the cladding tube wall, thereby forming a primary preform which has a hollow core region and an inner jacket region; and further processing the primary preform in order to form a secondary preform, including a process of elongating the primary preform in order to directly form the hollow-core fiber or to form the secondary preform. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved in that a primary preform with an outer diameter ranging from 20 to 70 mm is used for the elongation process.

3. 发明授权

US11492285B2 Preparation of quartz glass bodies from silicon dioxide granulate 有权
公开(公告)号：US11492285B2
公开(公告)日：2022-11-08
申请号：US16061558
申请日：2016-12-16
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Matthias Otter , Walter Lehmann , Michael Hünermann , Nils Christian Nielsen , Mirko Wittrin , Markus Wilde
IPC分类号： C03C1/02 , C03C3/06 , C03B20/00 , C03B17/04 , C03B19/10 , C03B37/012 , C03B37/027
摘要： One aspect relates to a process for the preparation of a quartz glass body including, providing a silicon dioxide granulate obtainable from a silicon dioxide powder, wherein the silicon dioxide granulate has a larger particle size than the silicon dioxide powder, making a 5 glass melt out of silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt. The melting crucible has at least one inlet and at least one outlet. A least part of the glass melt is removed via the melting crucible outlet. One aspect further relates to a quartz glass body which is obtainable by this process. One aspect further relates to a light guide, an illuminant and a formed body, which are each obtainable by further processing 10 of the quartz glass body.

4. 发明授权

US11485669B2 Quartz glass component of high thermal stability, semifinished product therefor, and method for producing the same 有权
公开(公告)号：US11485669B2
公开(公告)日：2022-11-01
申请号：US16030179
申请日：2018-07-09
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Christian Schenk , Nadine Tscholitsch , Thomas Baier
IPC分类号： C03B32/02 , C03B20/00 , C03B19/06 , C03C17/00
摘要： In a known method for producing a quartz glass component, a crystal formation layer containing a crystallization promoter is produced on a coating surface of a base body of quartz glass. Starting therefrom, to provide a method for producing a quartz glass component of improved thermal strength and long-term stability which displays a comparatively small deformation particularly also in the case of rapid heating-up processes, it is suggested according to one aspect that a porous crystal formation layer containing amorphous SiO2 particles is produced with a mean thickness in the range of 0.1 to 5 mm, and that a substance which contains cesium and/or rubidium is used as the crystallization promoter.

5. 发明申请

US20220267193A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220267193A1
公开(公告)日：2022-08-25
申请号：US17625175
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG
发明人： Manuel Rosenberger , Michael Hünermann , Martin Trommer , Kay Schuster , Steffen Weimann
IPC分类号： C03B37/027 , G02B6/032
摘要： Methods are known for producing an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; providing a number of tubular anti-resonant element preforms; arranging the anti-resonant element preforms at target positions of the interior of the cladding tube wall, thereby forming a primary preform which has a hollow core region and an inner jacket region; and elongating the primary preform in order to form the hollow-core fiber or further processing the primary preform in order to form a secondary preform. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved in that while carrying out a process according to step (c), components of the primary preform made of quartz glass and/or parts surrounding the primary preform made of quartz glass are heated and softened together, wherein the quartz glass of at least one of the preform components and/or the quartz glass of at least one of the parts surrounding the preform contains at least one dopant which decreases or increases the viscosity of quartz glass.

6. 发明申请

US20220242773A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220242773A1
公开(公告)日：2022-08-04
申请号：US17625952
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG
发明人： Manuel Rosenberger , Michael Hünermann , Martin Trommer , Kay Schuster , Steffen Weimann , Oliver Ganz
IPC分类号： C03B37/012 , C03B37/027
摘要： Methods are known for producing an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; providing a number of tubular anti-resonant element preforms; arranging the anti-resonant element preforms at target positions of the interior of the cladding tube wall, thereby forming a primary preform which has a hollow core region and an inner jacket region; and elongating the primary preform in order to form the hollow-core fiber or further processing the primary preform in order to form a secondary preform. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved by providing anti-resonant element preforms which have at least one respective ARE outer tube and/or at least one respective ARE inner tube, wherein the ARE outer tube and/or the ARE inner tube is produced using a vertical drawing method without molding tools.

7. 发明申请

US20220227656A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220227656A1
公开(公告)日：2022-07-21
申请号：US17617779
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG , HERAEUS QUARTZ NORTH AMERICA LLC
发明人： Manuel Rosenberger , Jan Vydra , Kai Huei Chang , Qiulin Ma
IPC分类号： C03B37/012 , C03B37/027
摘要： Methods are known for producing an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; forming a number of precursors for anti-resonant elements at target positions of the cladding tube wall; and elongating the primary preform in order to form the hollow-core fiber or further processing the primary preform in order to form a secondary preform from which the hollow-core fiber is drawn. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved in that the formation of the anti-resonant element precursors includes the formation of elongated pressure chambers, each of which adjoins a wall that can be deformed under pressure and heat in the region of the target positions of the anti-resonant elements and which cause a section of the deformable wall to protrude in the direction of the cladding tube inner bore under the effect of pressure and heat, thereby forming an anti-resonant element or a precursor for same, while carrying out a process according to step (c).

8. 发明申请

US20220153626A1 DOPED FUSED SILICA COMPONENT FOR USE IN A PLASMA-ASSISTED MANUFACTURING PROCESS AND METHOD FOR PRODUCING THE COMPONENT 有权
公开(公告)号：US20220153626A1
公开(公告)日：2022-05-19
申请号：US17438698
申请日：2020-02-27
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Mark STAMMINGER , Mario SUCH
IPC分类号： C03C3/06 , C03B19/06
摘要： Doped quartz glass components for use in a plasma-assisted manufacturing process contain at least one dopant which is capable of reacting with fluorine to form a fluoride compound, and the fluoride compound has a boiling point higher than that of SiF4. The doped quartz glass component has high dry-etch resistance and low particle formation, and has uniform etch removal when used in a plasma-assisted manufacturing process. The doped quartz glass has a microhomogeneity defined by (a) a surface roughness with an Ra value of less than 20 nm after the surface has been subjected to a dry-etching procedure as specified in the description, or (b) a dopant distribution with a lateral concentration profile in which maxima of the dopant concentration are at an average distance apart of less than 30 μm.

9. 发明授权

US11053152B2 Spray granulation of silicon dioxide in the preparation of quartz glass 有权
公开(公告)号：US11053152B2
公开(公告)日：2021-07-06
申请号：US16062366
申请日：2016-12-16
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Matthias Otter , Mirko Wittrin , Markus Wilde
IPC分类号： C03B17/04 , C03B20/00 , C01B33/18 , G02B6/02 , C03C3/06 , C03B19/10 , F26B3/12 , C03B37/012 , C03C1/02
摘要： One aspect relates to a process for the preparation of a quartz glass body. The process includes providing a silicon dioxide granulate, making a glass melt out of the silicon dioxide granulate, and making a quartz glass body out of at least a part of the glass melt. In one aspect, providing a silicon dioxide granulate includes providing of a silicon dioxide powder and processing of the powder to obtain a silicon dioxide granulate including the spray drying of a silicon dioxide slurry using a nozzle. The nozzle has a contact surface to the slurry made of glass, plastic or a combination thereof. Furthermore, one aspect relates to a quartz glass body obtainable by this process. Furthermore, one aspect relates to the preparation of a silicon dioxide granulate. One aspect also relates to a light guide, an illuminant, and a formed body, made from processing of the quartz glass body.

10. 发明申请

US20210009461A1 PURIFICATION OF QUARTZ POWDERS BY REMOVAL OF MICROPARTICLES OF REFRACTORY MATERIALS 有权
公开(公告)号：US20210009461A1
公开(公告)日：2021-01-14
申请号：US16925944
申请日：2020-07-10
申请人： Heraeus Quarzglas GmbH & Co. KG , Heraeus Conamic UK Limited
发明人： Ian George Sayce , Michael Schindler , Fabian Schildt , Eduard Visnow
IPC分类号： C03C3/06 , C22B59/00 , C22B60/02 , C22B3/22 , B03B5/62 , C01B33/12 , C03C1/02
摘要： Described is a process for the refinement of a quartz powder, comprising the step of separating microparticles of refractory minerals, in particular minerals containing rare earth metal compounds, from the quartz powder by an elutriation step.

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