Patent ID: 9658154
Date: 2017-05-23
CPC Classifications: G01J,G01N

Claim:
1. A spectrometer for gas analysis in tunnel air monitoring, the spectrometer having an entry aperture for coupling in electromagnetic radiation to be spectroscoped; having a refractive or diffractive optical element which is arranged such that electromagnetic radiation which is coupled in through the entry aperture is incident on the refractive or diffractive optical element to be spectrally split there; and having at least two individual detectors which are located in the optical paths thereof for the detection of different spectral ranges of the split electromagnetic radiation, wherein the at least two individual detectors are arranged next to one another in the direction of the spectral splitting of the electromagnetic radiation; and wherein one of the at least two individual detectors is arranged such that electromagnetic radiation from an ultraviolet wavelength range between 190 nm and 250 nm is deflected onto it by the refractive or diffractive optical element and another one of the at least two individual detectors is arranged such that electromagnetic radiation from a blue wavelength range between 410 nm and 460 nm is deflected onto it by the refractive or diffractive optical element; with electromagnetic radiation from the intermediate wavelength range between the said ultraviolet wavelength range and the said blue wavelength range not being detected.