Patent ID: 8541948
Filing Date: 2013-09-24
Classification: H05B

Abstract:
1. An operating device for operating at least one Hg low-pressure discharge lamp which has a first and a second electrode coil, the operating device comprising: an input for connecting a supply voltage; an output for connecting the at least one Hg low-pressure discharge lamp; a unit for providing a variable that is correlated with the Hg vapor pressure in the Hg low-pressure discharge lamp; a microcontroller which is coupled to said unit for providing the variable that is correlated with the Hg vapor pressure and to the output of the operating device, and is configured to provide at the output a signal for operating the at least one Hg low-pressure discharge lamp, wherein the signal is comprises at least one lamp operating parameter which is dependent on the variable that is correlated with the Hg vapor pressure, wherein the unit for providing a variable that is correlated with the Hg vapor pressure in the at least one Hg low-pressure discharge lamp comprises at least one unit for capturing emission spectra of at least specifiable spectral ranges, wherein the unit for capturing emission spectra comprises at least one light receiving unit which is arranged in the beam path of the at least one Hg low-pressure discharge lamp.