Figure 3
From: Creation of an anti-imaging system using binary optics
The simulated APSF, PSF, positive PSF and negative PSF in the focal region of a lens with NA = 0.8. (a) The APSF generated by the lens and a binary optical element consisting of zero and pi phases. (b) The PSF generated by the lens. (c) The positive PSF, consisting of positive electromagnetic waves, generated by the zero-phase region of the binary optical element. (d) The negative PSF, consisting of negative electromagnetic waves, generated by the pi-phase region of the binary optical element.
