Abstract: A method is provided for influencing an energy state of a radiation source. In order to provide a method that in a simple manner influences the energy state of a radiation source in a high-pressure metal vapour lamp, for the increase or decrease of the energy of the radiation source at least one energy sink is introduced into the direction of propagation of the electromagnetic radiation the radiation sources.

Abstract: In order to be able to check reliably glass protecting tubes for spiral-wound filaments of an infrared radiator heat source with respect to damages due to breaking, a device and method are provided for checking the integrity of a glass protecting tube, in particular made of quartz glass, is proposed with the invention for the spiral-wound filament of an infrared radiator heat source, whereby an analysis light beam is introduced into and passed through the material of the quartz protecting tube and whereby the analysis light beam coming out of the quartz protecting tube is detected and its intensity and/or wave length and/or phase is analyzed and whereby it is ascertained by means of the analysis if the quartz protecting tube is damaged or intact.

Abstract: In order to be able to check reliably glass protecting tubes for spiral-wound filaments of an infrared radiator heat source with respect to damages due to breaking, a device and method are provided for checking the integrity of a glass protecting tube, in particular made of quartz glass, is proposed with the invention for the spiral-wound filament of an infrared radiator heat source, whereby an analysis light beam is introduced into and passed through the material of the quartz protecting tube and whereby the analysis light beam coming out of the quartz protecting tube is detected and its intensity and/or wave length and/or phase is analyzed and whereby it is ascertained by means of the analysis if the quartz protecting tube is damaged or intact.

Abstract: An apparatus for curing, by drying and/or hardening, layers or coatings, such as printing colors or inks, laminations, etc., that are continuously successively applied to a member. The lowermost, pigment-containing layers are subjected to a thermal treatment via IR radiation, and the uppermost or cover layer, which forms a lamination, is exposed to UV radiation. The air above that region of the coated member that is subjected to the UV radiation is withdrawn and is blown onto that region of the member that is subjected to IR radiation.

Abstract: During operation of ionized vapor discharge lamps and the partial load range, the lamp current is reduced from the rated value, the drop in voltage is measured during and after the reduction of the lamp current, and when the period of constant voltage that follows the drop in voltage is reached, the lamp current is increased accompanied by simultaneous determination of the increase in voltage. The lamp current is thereupon controlled in such a way that during the partial load range operation of the lamp, the voltage value is slightly greater than that of the voltage of the period of constant voltage.