A Dynamic Foveated Optical Imaging System

Fig. 2. Electric field simulation result diagrams. (a) The center coordinate is (0,1); (b) the center coordinate is (0,-1); (c) the center coordinate is (-1,0); (d) the center coordinate is (1,0)

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Fig. 3. Interference fringe of liquid crystal lens. (a)-(d) The center coordinates of the liquid crystal lenses are (0,1), (0,-1), (-1,0), (1,0)

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Fig. 4. Response curve of liquid crystal with voltage

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Fig. 5. Wavefront diagram of liquid crystal lens with different centers

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Fig. 6. Schematic diagram of the dynamic foveated imaging experimental device

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Fig. 7. Dynamic imaging foveated experimental device diagram

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Fig. 8. Schematic diagram of liquid crystal lens scanning and area of interest

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Fig. 9. Results of the dynamic foveated imaging experiment. (a)-(d) The small foveated images corresponding to the center coordinates of the liquid crystal lens (0,1), (0,-1), (-1,0), and (1,0)

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Fig. 10. MTF curves of the region of interest and the low-resolution region of the dynamic foveated imaging system

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Table 1. Parameter table of moving position of different electric field centers

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Table 1. Parameter table of moving position of different electric field centers

Icon number		Fig. 2（a）	Fig. 2（b）	Fig. 2（c）	Fig. 2（d）
Central coordinate $(x_{0}, y_{0})$		（0，1）	（0，-1）	（-1，0）	（1，0）
Amplitude	$v_{1} / V_{r m s}$	3.25	3.25	4.53	1.97
	$v_{2} / V_{r m s}$	3.25	3.25	1.97	4.53
	$v_{3} / V_{r m s}$	4.53	1.97	3.25	3.25
	$v_{4} / V_{r m s}$	1.97	4.53	3.25	3.25
Phase	$φ_{1} = φ_{3}$	0 $°$	0 $°$	0 $°$	0 $°$
	$φ_{2} / (°)$	165	162.3	162.3	165
	$φ_{4} / (°)$	162.3	165	165	162.3