Shengqiang Zhang received his bachelor degree in physics at Beijing Institute of Techonoly in 2022 and is now a graduate researcher in Integrated Circuit Engineering, Beijing Institute of Technology. His research interests are flexible photodetectors and biomimic vision.
Zhuoran Wang received his PhD in the department of Mining and Materials Engineering from the McGill University, QC, Canada in 2017. In 2019 he joined the Institute of Photonic Sciences (ICFO), Barcelona, as a postdoctoral/Marie-Curie research fellow. He is currently a professor at the School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing. His current research focuses on flexible and infrared optoelectronic sensors for biomimic vision.
Fig. 1.
(Color online) (a) Schematics of feline and conventional vision during the daytime and (b) nighttime. (c) Schematics of the feline vision in the daytime with a VP for light adaptation. The yellow plane represents the tangential plane, and the blue plane represents the sagittal plane. (d) Optical simulation of the cross-sectional focal spot according to object distance. The horizontal cross section represents the tangential plane, and (e) the vertical cross section represents the sagittal plane. (f) Ray tracing simulation for various object distances with small circular pupils and (g) VPs, the cross-shaped object is located at 150, 200, and 250 mm. (h) Simulation for camouflage breaking with small CPs and VPs. The center of the random texture is located at 200 mm, and the background random texture is located at 400 mm. (i) Photograph of the fabricated hemispherical silicon photodetector array combined with patterned silver reflectors (HPA-AgR). The inset shows an individual photodiode pixel with a circuit diagram. (j) Exploded structure of the device with a detailed thickness of each component. (k) Schematic illustration showing the artificial feline eye–inspired vision system. (l) The tested image with the ground truth (GT) image and noisy GT of letters (i.e., F, O, C, U, and S) obtained with a small CP and VP. (m) Optical simulation results for the dataset with small CP and VP for each label. (n) The calculated accuracy rates for the Fashion-MNIST dataset from image simulations, both with and without noise. Copyright 2024, American Association for the Advancement of Science[10].
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