Fig. 1. Experimental system of optical scanning holography, where dashed box shows a typical two-pupil optical heterodyne scanning imaging system

Fig. 2. Static Fresnel zone plate in OSH

Fig. 3. Holograms in conventional and spiral OSHs^[28]. (a) Real part of hologram in conventional OSH; (b) imaginary part of hologram in conventional OSH; (c) phase of hologram in conventional OSH; (d) real part of hologram in spiral OSH; (e) imaginary part of hologram in spiral OSH; (f) phase of hologram in spiral OSH

Fig. 4. OSH with spiral trajectory^[33]. (a) Raster scanning; (b) spiral scanning; (c) configuration for lensless holographic imaging of fluorescent beads

Fig. 5. Sectioning images of 3D fluorescent beads with two-layer structure reconstructed by (a)(b) conventional reconstruction method and (c)(d) inverse imaging ^[44]

Fig. 6. Comparison of holographic reconstruction results of 3D fluorescent beads^[53]. (a) Conventional reconstruction method; (b) extended-depth-of-field imaging; (c) map of reconstruction depth; (d) 3D representation of reconstruction depth