【摘要】 GC 2 11光学传递函数分析仪是北京理工大学光电工程系自行研制的一台能对折轴、潜望等复杂光学系统进行测量的大型精密测量仪。其测量采用了刀口扫描和狭缝扫描两种方式。但实际应用时 ,用刀口扫描方式得到的光学传递函数值总是小于理论值。通过分析计算 ,得出在相同条件下 ,刀口扫描法比狭缝扫描法抗干扰能力差的结论 ,弄清了长期以来刀口扫描测试数值偏小的问题。更多还原

【Abstract】 GC 211 optical transfer function analysis instrument, which was made in the Department of Optoelectronic Engineering, Beijing Institute of Technology, is a large precise instrument for measuring the OTF of complex optical system like periscope etc It can utilize two measuring methods, knife edge scanning and slit scanning But in the process of application, the OTF calculating results through knife edge scanning were always lower than the theoretical results Through analysis and numerical calculation, a conclusion that the anti jamming ability of knife edge scanning is inferior to that of slit scanning under the same condition was reached The problem that the measurement data are often smaller than the actual ones with the knife edge scanning method is clarified更多还原