Patent ID: 7498575

Claim:
Radiation absorption optical analysis device, comprising: a housing with at least one radiation-permeable housing element, at least a first radiation source in the housing, a first reflector assigned to the first radiation source in the housing, a second radiation source in the housing, a second reflector assigned to the second radiation source in the housing, at least a first detector in the housing, a second detector and an external reflector located outside the housing, an absorption space formed between the external reflector and the radiation-permeable housing element, and a measurement beam reflector in the housing, wherein measurement beams emitted by the first radiation source, after reflection by the first reflector, passing out of the housing to the external reflector, the emitted measurement beams being reflected by the external reflector to the measurement beam reflector in the housing after passing through the absorption space, and from the measurement beam reflector are directly directed onto the first detector and the second detector, and wherein reference beams emitted by the second radiation source are reflected by the second reflector and are directly directed onto the first detector and the second detector.