Laser measurement system for physical parameters, eg linear paths angles etc - has oscillator circuit in receiver with detuned base frequency, and applies laser beam repeatedly to measurement path

摘要

The laser measurement system has a laser light source (4), a receiver (4-6) and an evaluation and display unit (30). The laser beam is repeatedly applied to the same measurement path so that light delay times are summed. The laser receiver circuit has a superimposed oscillator circuit (2) with a constant base frequency detuned so that its received and counted pulses along the time axis for the light delay are a measure of the physical paramter being measured. USE/ADVANTAGE - E.g. for measuring linear measurement paths, rotation angles and angles as well as presure, speed and acceleration etc.. Extremely high resolution is achieved over any measurement length.