Fig. 1. Schematic of the field distribution principle of optical imaging system under arbitrary aperture diaphragm

Fig. 2. Comparison between simulation result of spatial distribution of Airy spot's light intensity formedby D=20 mm circular aperture diffraction and theoretical value

Fig. 3. Experimental apparatus diagram

Fig. 4. Simulation and experimental results of light intensity distribution of semicircular diaphragm at different locations in the image space