此激光平行光管具有以前平行光管的优点，且可以与数字相移干涉仪对接，直接进行波前误差的高精度测量。
The laser collimator not only has the advantages of existing ones, but also can be used to measure wavefront error with high accuracy interferometer.
该仪器使用可变光栏黑体和反射式平行光管模拟不同大小、距离的目标，并创新性地采用激光测量的方法测量微小的绕动角。
The instrument USES an adjustable diaphragm blackbody radiator and a reflecting collimator to simulate objects with various size, range and radiation characters.
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