Optical component containing a maximum of 200 wt.-ppm of chlorine
AssigneeHeraeus Quarzglas GmbH & Co. KG
InventorsGerhard Schötz, Jan Vydra
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Abstract
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.
Claims5
Optical component with a cylindrical core glass of synthetic quartz glass containing hydroxyl groups, a maximum 200 wt.-ppm of chlorine, and no doping in the form of a metal oxide, and with a cladding glass axially surrounding the core glass and consisting of doped quartz glass having a lower index of refraction than the core glass, characterized in that the core glass contains less than 5 wt.-ppm of hydroxyl groups, wherein the core glass contains at least 2000 wt.-ppm fluorine.
Dependencies are inferred from the claim text.