FIELD: measuring technique.
SUBSTANCE: device additionally comprises two lenses, first and second current-voltage converters whose inputs are connected with the output of the source of optical radiation and output of the receiver of optical radiation, first and second code-voltage converters whose inputs are connected with the first and second information outputs of the computer, and differentiation amplifier whose first and second inputs are connected with the outputs of the first current-voltage converter and first code-voltage converter, respectively.
EFFECT: enhanced reliability.
8 dwg
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