Patents by Inventor Gerhard Schotz
Gerhard Schotz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11512017Abstract: In known methods for producing a glass component, a void-containing intermediate product containing doped or non-doped SiO2 is inserted into a sheath tube composed of glass, which has a longitudinal axis and an inner bore, and is thermally treated therein. In order to subject the intermediate product to a thermal and/or reactive treatment that is reproducible and uniform in its effect from this starting point, it is proposed in one embodiment that into the sheath tube's inner bore a first gas-permeable gas diffuser is inserted which is displaceable along the sheath tube's longitudinal axis and is pressed against the intermediate product during the thermal treatment.Type: GrantFiled: February 28, 2020Date of Patent: November 29, 2022Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Jacqueline Plass, Dörte Schönfeld, Clemens Schmitt, Alexander Laaz, Andreas Langner, Gerhard Schötz, Walter Lehmann, Michael Hünermann, Stefan Weidlich, Jürgen Schäfer
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Patent number: 10851008Abstract: A method for producing a component with portions of a rare earth metal-doped quartz glass, an intermediate product containing voids and consisting of a SiO2 raw material doped with rare earth metal is introduced into a sinter mold the interior of which is bordered by a carbonaceous mold wall, and is melted therein into the component by gas pressure sintering at a maximum temperature above 1500° C. A shield is arranged between the mold wall and the intermediate product. In order to indicate a modified gas pressure sintering method that ensures the production of rare earth metal-doped quartz glass with reproducible properties, a bulk material of amorphous SiO2 particles with a layer thickness of at least 2 mm is used as the shield, the softening temperature thereof being at least 20° C.Type: GrantFiled: March 28, 2018Date of Patent: December 1, 2020Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Walter Lehmann, Mario Such, Thomas Kayser, Andreas Langner, Gerhard Schötz
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Publication number: 20200277217Abstract: In known methods for producing a glass component, a void-containing intermediate product containing doped or non-doped SiO2 is inserted into a sheath tube composed of glass, which has a longitudinal axis and an inner bore, and is thermally treated therein. In order to subject the intermediate product to a thermal and/or reactive treatment that is reproducible and uniform in its effect from this starting point, it is proposed in one embodiment that into the sheath tube's inner bore a first gas-permeable gas diffuser is inserted which is displaceable along the sheath tube's longitudinal axis and is pressed against the intermediate product during the thermal treatment.Type: ApplicationFiled: February 28, 2020Publication date: September 3, 2020Applicant: Heraeus Quarzglas GmbH & Co. KGInventors: Jacqueline Plass, Dörte Schönfeld, Clemens Schmitt, Alexander Laaz, Andreas Langner, Gerhard Schötz, Walter Lehmann, Michael Hünermann, Stefan Weidlich, Jürgen Schäfer
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Patent number: 10183886Abstract: A quartz glass tube as a semi-finished product for an optical component that has an inner bore extending along a tube center axis for the acceptance of a core rod and a tube wall limited by an inner casing surface and an outer casing surface is already known; within said tube wall an inner region made of a first quartz glass and an outer region made of a second quartz glass with a different index of refraction surrounding the inner region contact one another at a contact surface which runs around the center axis. In order to provide a quartz glass on this basis that facilitates the production of optical components for special applications such as laser-activated optical components in wand or fiber form, the invention states that the contact surface has a non-round course in the radial cross-section and the inner casing surface has a circular course.Type: GrantFiled: January 17, 2013Date of Patent: January 22, 2019Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Gerhard Schötz, Karsten Bräuer, Richard Schmidt, Peter Bauer, Andreas Schultheis, Clemens Schmitt, Andreas Langner
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Publication number: 20180282196Abstract: A method for producing a component with portions of a rare earth metal-doped quartz glass, an intermediate product containing voids and consisting of a SiO2 raw material doped with rare earth metal is introduced into a sinter mold the interior of which is bordered by a carbonaceous mold wall, and is melted therein into the component by gas pressure sintering at a maximum temperature above 1500° C. A shield is arranged between the mold wall and the intermediate product. In order to indicate a modified gas pressure sintering method that ensures the production of rare earth metal-doped quartz glass with reproducible properties, a bulk material of amorphous SiO2 particles with a layer thickness of at least 2 mm is used as the shield, the softening temperature thereof being at least 20° C.Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Applicant: Heraeus Quarzglas GmbH & Co. KGInventors: Walter Lehmann, Mario Such, Thomas Kayser, Andreas Langner, Gerhard Schötz
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Patent number: 9901653Abstract: A UV lamp including a filter material of doped quartz glass is provided that effects a transparency as high as possible for operating radiation in the ultraviolet spectral range above 210 nm together with low transparency in the wavelength range below about 190 nm. The filter material of doped quartz glass includes at least 99 wt. % of SiO2 and Al2O3, wherein the Al2O3 portion is in the range of 2 wt. % to 4 wt. The filter material has an edge wavelength at a wavelength below 190 nm and a spectral transmission of 80% mm?1 or higher at a wavelength of 210 nm.Type: GrantFiled: September 29, 2016Date of Patent: February 27, 2018Assignees: Heraeus Quarzglas GmbH & Co. KG, Heraeus Noblelight GmbHInventors: Mark Stamminger, Christoph Söller, Franz-Josef Schilling, Erich Arnold, Gerhard Schötz, Mario Such, Andreas Langner, Björn Roos, Klaus Zoltner
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Publication number: 20170095583Abstract: A UV lamp including a filter material of doped quartz glass is provided that effects a transparency as high as possible for operating radiation in the ultraviolet spectral range above 210 nm together with low transparency in the wavelength range below about 190 nm. The filter material of doped quartz glass includes at least 99 wt. % of SiO2 and Al2O3, wherein the Al2O3 portion is in the range of 2 wt. % to 4 wt. The filter material has an edge wavelength at a wavelength below 190 nm and a spectral transmission of 80% mm?1 or higher at a wavelength of 210 nm.Type: ApplicationFiled: September 29, 2016Publication date: April 6, 2017Inventors: Mark STAMMINGER, Christoph SÖLLER, Franz-Josef SCHILLING, Erich ARNOLD, Gerhard SCHÖTZ, Mario SUCH, Andreas LANGNER, Björn ROOS, Klaus ZOLTNER
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Publication number: 20150218036Abstract: The invention relates to a plasma deposition process for producing an optical preform, which is characterized by a cladding glass layer having a non-round internal cross-section together with high fluorine doping and axially and radially specified dopant distribution, which in the simplest case is as uniform as possible. For this purpose, a two-stage method is proposed, wherein a substrate body having a non-round cross-section is first reshaped into a coated substrate body having a circular cross-section in that a POD filling layer made of quartz glass having the nominal fluorine concentration is deposited onto a present filling surface and rounded by grinding, and then in the second stage of the method a POD sheathing glass layer made of fluorine-doped quartz glass and having a circular-ring-shaped cross-section is deposited.Type: ApplicationFiled: August 8, 2013Publication date: August 6, 2015Inventors: Gerhard Schötz, Karsten Bräuer, Richard Schmidt, Peter Bauer, Andreas Schultheis, Paul Bödiger, Andreas Langner
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Publication number: 20150017440Abstract: A quartz glass tube as a semi-finished product for an optical component that has an inner bore extending along a tube centre axis for the acceptance of a core rod and a tube wall limited by an inner casing surface and an outer casing surface is already known; within said tube wall an inner region made of a first quartz glass and an outer region made of a second quartz glass with a different index of refraction surrounding the inner region contact one another at a contact surface which runs around the centre axis. In order to provide a quartz glass on this basis that facilitates the production of optical components for special applications such as laser-activated optical components in wand or fibre form, the invention states that the contact surface has a non-round course in the radial cross-section and the inner casing surface has a circular course.Type: ApplicationFiled: January 17, 2013Publication date: January 15, 2015Inventors: Gerhard Schötz, Karsten Bräuer, Richard Schmidt, Peter Bauer, Andreas Schultheis, Clemens Schmitt, Andreas Langner
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Publication number: 20100186453Abstract: In a known method for the production of a blank mold for optical fibers, a fluorine-doped SiO2 enveloping glass is produced on a core glass cylinder that rotates about its longitudinal axis, wherein a silicon-containing starting substance is fed to a plasma burner, said substance is then oxidized in a plasma flame assigned to the plasma burner to obtain SiO2 particles, the SiO2 particles are deposited by layers on the enveloping surface of the cylinder of the core glass cylinder in the presence of fluorine and sintered into the enveloping glass. The invention aims at providing an economical method, which builds upon the above-mentioned method, in order to produce a blank mold from which optical multi-mode fibers (52) can be obtained.Type: ApplicationFiled: March 24, 2010Publication date: July 29, 2010Applicant: Heraeus Quarzglas GmbH & Co. KGInventors: Gerhard Schötz, Karsten Bräuer, Michael Hünermann, Richard Schmidt, Heinz Fabian, Norbert Treber
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Patent number: 7716952Abstract: In a known method for the production of a blank mold for optical fibers, a fluorine-doped SiO2 enveloping glass is produced on a core glass cylinder that rotates about its longitudinal axis, wherein a silicon-containing starting substance is fed to a plasma burner, said substance is then oxidized in a plasma flame assigned to the plasma burner to obtain SiO2 particles, the SiO2 particles are deposited by layers on the enveloping surface of the cylinder of the core glass cylinder in the presence of fluorine and sintered into the enveloping glass. The invention aims at providing an economical method, which builds upon the above-mentioned method, in order to produce a blank mold from which optical multi-mode fibers (52) can be obtained.Type: GrantFiled: April 6, 2004Date of Patent: May 18, 2010Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Gerhard Schötz, Karsten Bräuer, Heinz Fabian, Norbert Treber
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Publication number: 20060213228Abstract: In a known method for the production of a blank mold for optical fibers, a fluorine-doped SiO2 enveloping glass is produced on a core glass cylinder that rotates about its longitudinal axis, wherein a silicon-containing starting substance is fed to a plasma burner, said substance is then oxidized in a plasma flame assigned to the plasma burner to obtain SiO2 particles, the SiO2 particles are deposited by layers on the enveloping surface of the cylinder of the core glass cylinder in the presence of fluorine and sintered into the enveloping glass. The invention aims at providing an economical method, which builds upon the above-mentioned method, in order to produce a blank mold from which optical multi-mode fibers (52) can be obtained.Type: ApplicationFiled: April 6, 2004Publication date: September 28, 2006Applicant: Heraeus Tenevo GmbHInventors: Gerhard Schotz, Karsten Brauer, Michael Hunermann, Richard Schmidt, Heinz Fabian, Norbert Treber
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Patent number: 6622527Abstract: A core glass for making a preform for an optical fiber particularly useful for the transmission of ultraviolet radiation and methods for making the core glass are disclosed. The core glass is obtained by the flame hydrolysis of a silicon compound, deposition of finely granular SiO2 on a substrate with direct vitrification and formation of a synthetic quartz glass. The quartz glass has a hydrogen content of less than 1×1018 molecules/cm3.Type: GrantFiled: May 23, 2002Date of Patent: September 23, 2003Assignee: Heraeus Quarzglas GmbHInventors: Gerhard Schötz, Jan Vydra
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Publication number: 20020170320Abstract: A core glass for making a preform for an optical fiber particularly useful for the transmission of ultraviolet radiation and methods for making the core glass are disclosed. The core glass is obtained by the flame hydrolysis of a silicon compound, deposition of finely granular SiO2 on a substrate with direct vitrification and formation of a synthetic quartz glass. The quartz glass has a hydrogen content of less than 1×1018 molecules/cm3.Type: ApplicationFiled: May 23, 2002Publication date: November 21, 2002Inventors: Gerhard Schotz, Jan Vydra
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Patent number: 6289161Abstract: In a known optical component a cylindrical glass core of synthetic quartz glass contains hydroxyl groups, a maximum 200 wt.-ppm of chlorine, and no dopant in the form of a metal oxide. The glass core is axially enveloped by a glass mantle of doped quartz glass which has a lower refractive index than the glass core. Setting out from this, in order to offer an optical component of quartz glass for broad-band transmission, especially for broad-band spectroscopy, which is characterized by low attenuation over a broad range of wavelengths, it is proposed by the invention that the core glass contain less than 5 wt.-ppm of hydroxyl groups.Type: GrantFiled: November 23, 1998Date of Patent: September 11, 2001Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Gerhard Schötz, Jan Vydra