UV LAMP AND METHOD FOR IRRADIATING A SURFACE, A LIQUID OR A GAS WITH UV RADIATION

摘要

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.

主权项

1. A UV lamp for operating radiation with wavelengths in the ultraviolet spectral range, the UV lamp comprising:
an optical path in which a filter material of doped quartz glass is provided,
wherein the doped quartz glass includes at least 99 wt. % of SiO2 and Al2O3, the Al2O3 portion being in the range of 2 wt. % to 4 wt. %,wherein the filter material has an edge wavelength at a wavelength below 190 nm, andwherein the filter material has a spectral transmission of 80% mm−1 or higher at a wavelength of 210 nm.