Gas concentration measuring device, has radiation guiding device with main optics unit that includes cylinder-like optic unit such that radiation source is formed in radiation spot running along preferred direction

摘要

The device has a radiation source (1) for producing radiation. A measuring cell hits the radiation on a radiation detector, where the radiation is guided by a radiation guiding device. The guiding device has a main optics unit (2) with a cylinder-like optic unit (4) such that the source is formed in a radiation spot (5) running along a preferred direction. Parallel reflection surfaces (7, 7`) extend perpendicular to the preferred direction. The radiation is totally-reflected between the optic unit and the detector. The detector extends perpendicular to a bending level of the optic unit.