Fig. 1. Optical set-up for different cell-phone microscopes

Fig. 2. Mobile phone microscope optical structure and sample images

Fig. 3. Mobile-optical-polarization imaging device prototype and sample images

Fig. 4. The designed cell-phone based microscope structural diagram and sample images

Fig. 5. Schematic diagram and prototype of mobile phone microscope using a 3 mm ball lens^[24]

Fig. 6. Lens-free on-chip holographic microscope optical setup and prototype ^[28]