Fig. 1. Schematic diagram of wavefront coding system

Fig. 2. Structure diagrams of optical systems. (a) Initial structure; (b) optimized structure

Fig. 3. MTF curves of the optical system under different defocusing states

Fig. 4. MTF curves of wavefront coding with various phase masks. (a) 1×10^-5; (b) 1×10^-4; (c) 3×10^-4; (d) 1×10^-3

Fig. 5. Integral curves of MTF under different defocusing states

Fig. 6. Curves of Euclidean distance under different defocusing states

Fig. 7. Curves of cosine similarity under different defocusing states

Fig. 8. PSF of wavefront coding system. (a) 3D graph; (b) 2D graph

Fig. 9. Defocus diagrams of optical system. (a)(b)(c) Conventional system; (d)(e)(f) wavefront coding system

Fig. 10. Restored images of wavefront coding system. (a) 0× defocus; (b) 10× defocus; (c) 20× defocus