The perspective version of the multipass matrix system for use in diode laser spectrometers is worked out with the purpose of atmospheric monitoring at different altitudes. The new matrix system owing to its vibrostability allows making measurements in conditions of the high vibration on board of aircraft and helicopter. In this modification all best properties of the known matrix four-objective system, which was taken for the basis, are kept. One of the important properties of the multipass system is that all even images in the image matrix are absolutely immovable at vibrations of the system. In the image matrix, containing odd number of rows, last row includes images of even numbers, so output light beam is insensitive to vibrations and can be concentrated on the detector sensing area of the rather small size. Under the stationary conditions the light pass number can reach 1000 for high-reflective mirror coatings.
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