1.前言在微小质量、光压力、万有引力常数等的测定中测量微小力的变化的时候,使用着一种光学的测定方法一把力矩变为镜面的转动,即产生角位移。在角位移测量中,通常使用自动准直平行光管,然而,市场上所出售的自动准直平行光管,其最小格值,目视的为2微弧度 1. INTRODUCTION When measuring changes in small forces in the measurement of minute mass, light pressure, gravitational constant, etc., an optical measuring method is used to turn a moment into a mirror-like rotation, that is, to produce angular displacement. Automated collimating collimators are commonly used in angular displacement measurements, however, the auto collimator collimators on the market, with a minimum grid of 2 microradians