FIELD: electro-optics. SUBSTANCE: light-receiving unit of the device is made of light-emitting element array and of radiation sources array, which are connected optically together. Light-emitting elements are turned on and switched by means of electric signals commutator under control of command-gate unit. The commutator is connected with radiation sources array in series. The commutator is also connected with signal processing unit and with unit for controlling rejection mechanism. EFFECT: improved precision. 4 dwg
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