一种新型摆杆式可变光栏
A new type of sway-bar iris diaphragm
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 .
可变光栏