Heraeus Quarzglas Gmbh & Co Kg

Heraeus Noblelight Gmbh

Singulus Technologies Ag

Björn Roos

Michael Hünermann

Nils-Peter Harder

Matthias Otter

Andreas Langner

Gerrit Scheich

Nils Christian Nielsen

Erich Arnold

Gerhard Schötz

Mario Such

Frank Wessely

Oliver Hohn

Franz-Josef Schilling

Andreas Schreiber

Mark Stamminger

Christoph Söller

Klaus Zoltner

Torsten Dippell

Thorsten Dullweber

Michael Siebert

One aspect relates to a process for the preparation of a quartz glass body. The process includes providing a silicon dioxide granulate from a pyrogenically produced silicon dioxide powder, making a glass melt out of silicon dioxide granulate, and making a quartz glass body out of at least part of the glass melt. The size of the quartz glass body is reduced to obtain a quartz glass grain. The quartz glass body is processed to make a preform and an opaque quartz glass body is made from the preform. One aspect further relates to an opaque quartz glass body which is obtainable by this process. One aspect further relates to a reactor and an arrangement, which are each obtainable by further processing of the opaque quartz glass body.

Preparation of an opaque quartz glass body

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 SiOand AlO, wherein the AlOportion 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% mmor higher at a wavelength of 210 nm.

UV lamp and method for irradiating a surface, a liquid or a gas with UV radiation

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Freigericht, Germany

Björn Roos