FIELD: optics.
SUBSTANCE: invention relates to the field of optoelectronic instrument making and concerns the laser sensor module. Module comprises a laser, a detector, an electric drive and an optical device. Laser sensor module is configured to control the distance between the laser sensor module and the focusing area and to provide two modes of the laser sensor module. In the first and second modes, the focusing area is at different distances. Detector is configured to detect an interference signal of optical wave self-mixing in the laser resonator. Interference signal of self-mixing in the first mode is used to detect object movement for control by means of gestures for a device with a human-machine interface. Signal of interference of self-mixing in second mode is used to determine density or size of particles.
EFFECT: technical result consists in possibility of simultaneous determination of two different physical parameters by means of interference of self-mixing.
17 cl, 11 dwg
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