FIELD: physics.
SUBSTANCE: before trajectory parameters of mirrored light beam are recorded, synchronous detection is carried out with automatic amplitude control. Device presents synchronous detector and accommodates integrated photosensors. Light source is modulated. Besides, light source can be light-emitting diode cluster with pulses of optimal parameters.
EFFECT: reduced data loss, as well as higher measurement reliability and accuracy.
6 cl, 4 dwg
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