A simple device for measuring laser interference fringe visual acuity of retina-brain system of the human eye is introduced.
本文介绍了一种测定人眼激光视网膜干涉条纹视力的简易装置。
The error caused by rotary tracking mirror device and cat eye reflector in the laser tracking measure system are discussed, and its effect to the measuring result is analyzed.
论述了在激光跟踪测量系统中由跟踪转镜机构和猫眼逆反射器产生的光学误差，并分析了它们对测量结果产生的影响。
This kind of device employs advanced laser scanning measuring technique, which can measure automatically the coal storage in the open coal yard without necessity of shaping coal pile beforehand.
它采用先进的激光扫描测量技术，可以在不对煤堆进行事先整形的情况下自动测量出大型露天煤场的存煤量。
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