People may find this interesting too: https://ocw.mit.edu/courses/mechanical-engineering/2-71-optics-spring-2009/video-lectures/lecture-19-the-4f-system-binary-

People may find this interesting too: https://ocw.mit.edu/courses/mechanical-engineering/2-71-optics-spring-2009/video-lectures/lecture-19-the-4f-system-binary-amplitude-pupil-masks/MIT2_71S09_lec19.pdf https://ocw.mit.edu/courses/mechanical-engineering/2-71-opti...