Reflectorless distance measurements to synthetic materials are subjected to errors result from their partial transparency. The final reflection of the beam is from the background behind the synthetic. This paper examines the influence of the background setback on the accuracy of the measured distances for synthetics of various properties. The tests demonstrated a variable dependence of the measured distances on the setback of the background. For materials with a lower transparency, the errors were systematically decreasing as the background was being moved away. For the materials with a higher transparency, the errors initially increased and then they got systematically smaller.

中文翻译：

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半透明合成目标背后的背景挫折对无反射器距离测量精度的影响

到合成材料的无反射器距离测量会因其部分透明性而产生误差。光束的最终反射来自合成物后面的背景。本文研究了背景挫折对各种性质的合成物的测量距离精度的影响。测试表明，所测得的距离与背景的倒退存在可变的相关性。对于透明度较低的材料，随着背景的移开，误差会系统地减少。对于具有较高透明度的材料，误差最初会增加，然后系统地减小。