Lei Zhu, Xiaopeng Shao. Research Progress on Scattering Imaging Technology[J]. Acta Optica Sinica, 2020, 40(1): 0111005
- Acta Optica Sinica
- Vol. 40, Issue 1, 0111005 (2020)
Fig. 1. Schematic of digital optical phase conjugation
![Schematics of wavefront optimization [14]. (a) Before wavefront optimization;(b) after wavefront optimization](/richHtml/gxxb/2020/40/1/0111005/img_2.jpg)
Fig. 2. Schematics of wavefront optimization [14]. (a) Before wavefront optimization;(b) after wavefront optimization
![Focusing results after wavefront optimization[14]. (a) Speckle before focusing; (b) focusing on single point; (c) focusing on multiple points; (d) optimized wavefront phase](/Images/icon/loading.gif){kind=icon}
Fig. 3. Focusing results after wavefront optimization[14]. (a) Speckle before focusing; (b) focusing on single point; (c) focusing on multiple points; (d) optimized wavefront phase
Fig. 4. Schematics of focusing beyond diffraction-limit [15]. (a) Focusing optical system with conventional lens; (b) focusing optical system with random scattering media
Fig. 5. Experimental results of focusing beyond diffraction-limit[15]. (a) Focal spot of focusing optical system with conventional lens; (b) speckle of focusing optical system with random scattering media before optical modulation; (c) focal spot beyond diffraction-limit; (d) optimized wavefront phase
Fig. 6. Imaging beyond diffraction-limit using random scattering lens[39]. (a) Imaging using conventional microscope; (b) imaging beyond diffraction-limit; (c) comparison of center tangents of first spots on left of Figs. 6 (a) and (b)
Fig. 7. Experimental schematic of measuring optical transmission matrix based on four-step phase shift[18]
Fig. 8. Experimental results of focusing via phase conjugation[18]. (a) Speckle before focusing; (b) result of focusing on single point; (c) result of focusing on multiple points
Fig. 9. Experimental results of optical memory effect[21]
Fig. 10. Schematic of non-invasive imaging based on optical memory effect [22]
Fig. 11. Experimental results of scattering imaging based on optical memory effect[22]. (a) Speckle; (b) autocorrelation of speckle; (c) original object; (d) reconstructed object
Fig. 12. Schematic of single-frame imaging based on speckle autocorrelation [23]. (a) Schematic of imaging model; (b) speckle; (c) speckle autocorrelation; (d) reconstructed objects
Fig. 13. Experimental results of single-frame imaging based on speckle autocorrelation[23]. (a) Imaging setup; (b) speckle; (c)-(g) first column shows speckle autocorrelation, second column shows reconstructed objects, and third column shows original objects
Fig. 14. Reconstructed results obtained by bi-spectral analysis[62]. (a) Speckles; (b) Fourier amplitudes; (c) Fourier phases; (d) reconstructed objects; (e) original objects
Fig. 15. Experimental results of scattering imaging based on shower-curtain effect[64]. (a) Original object; (b) object is far away from thin scatter; (c) object is close to thin scatter; (d) principle of scattering imaging system based on shower-curtain effect; (e) process of object reconstruction
Fig. 16. Experimental results of scattering imaging based on deconvolution[75]. (a) Schematic of experimental setup; (b) original object; (c) speckle; (d) point spread function of imaging system; (e) reconstructed result
Fig. 17. Schematic of scattering imaging based on phase diversity[78]
Fig. 18. Experimental results of scattering imaging based on phase diversity[78]. (a) Original object; (b) speckle with diversity; (c) first column shows estimated random phases, second column shows estimated local point spread functions, and third column shows reconstructed objects
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