Abstract: An assembly and a method for measuring a gas concentration by means of absorption spectroscopy, in particular for capnometric measurement of the proportion of CO2 in breathing air in which IR light from a thermal light source is guided through a measuring cell with a gas mixture to be analyzed, and the concentration of the gas to be measured that is contained in the gas mixture is determined by measuring an attenuation of the light introduced into the measuring cell caused by absorption by the gas to be measured. The thermal light source is designed as an encapsulated micro-incandescent lamp with a light-generating coil.

Abstract: An assembly and a method for measuring a gas concentration by means of absorption spectroscopy, in particular for capnometric measurement of the proportion of CO2 in breathing air in which IR light from a thermal light source is guided through a measuring cell with a gas mixture to be analyzed, and the concentration of the gas to be measured that is contained in the gas mixture is determined by measuring an attenuation of the light introduced into the measuring cell caused by absorption by the gas to be measured. The thermal light source is designed as an encapsulated micro-incandescent lamp with a light-generating coil.

Abstract: A method of referencing in optical absorption spectroscopy using broadband light sources for determining the concentration of substances in gaseous or fluid media through and to a device for measuring the concentration of substances in gaseous or fluid media within the measurement path of a measurement cell using absorption spectroscopy of light emitted from broadband light sources via light guiding optics.

Abstract: A method of referencing in optical absorption spectroscopy using broadband light sources for determining the concentration of substances in gaseous or fluid media through and to a device for measuring the concentration of substances in gaseous or fluid media within the measurement path of a measurement cell using absorption spectroscopy of light emitted from broadband light sources via light guiding optics.

Abstract: The present invention relates to a device for determining the concentration of substances in fluid media.

Abstract: The invention relates to a spatial filter measuring arrangement (1) and a spatial filter measuring device (2) comprising at least one sensor (4, 5; 41I-41IV; 51) and a spatial filter, wherein electromagnetic radiation, in particular light, that is emitted or reflected by a measurement object (13), is imaged onto the sensor (4, 5; 41I-41IV; 51, 52) by means of the spatial filter. The invention further relates to a method for spatial filter measurement. The spatial filter measuring arrangement according to the invention is further developed in that the spatial filter is designed as a micro-mirror array which has mirror elements (21-21??) which can be moved about respective angular positions.

Abstract: The invention relates to a spatial filter measuring arrangement (1) and a spatial filter measuring device (2) comprising at least one sensor (4, 5; 41I-41IV; 51) and a spatial filter, wherein electromagnetic radiation, in particular light, that is emitted or reflected by a measurement object (13), is imaged onto the sensor (4, 5; 41I-41IV; 51, 52) by means of the spatial filter. The invention further relates to a method for spatial filter measurement. The spatial filter measuring arrangement according to the invention is further developed in that the spatial filter is designed as a micro-mirror array which has mirror elements (21-21??) which can be moved about respective angular positions.

Abstract: The invention relates to a method and to a device for using partially non-stabilized broadband light sources to accurately measure partially broadband-absorbing substances using referencing measuring cells. In order to create a low-cost, high-resolution, and at the same time fast spectrographic device for measuring concentrations of substances in fluid or gaseous media that is also suitable for harsh environments, the light radiated by the broadband light sources (1) through light guiding optical systems is fed through the measuring section of the self-referencing measuring cell (20, 30, 40) or only partially through a measuring cell (10) to a measurement detector (photoreceptor 11) and partially through a reference path (optical waveguide 8) to a reference detector (photoreceptor 15), and a mode coupler (5, 9, 14) is associated with each optical waveguide (2, 4, 7, 8) in order to homogenize the radiation characteristic of the broadband light sources (1), which varies over time and space.