Vol. 50, Issue 4, pp. 551-566

Vol. 50 Issue 4 pp. 551-566

Simulation research of bionic image intensifier based on the retina structure of elephant-nose fish

Hongxia Zhang, Qingwen Jin, Peng Li, Dagong Jia, Tiegen Liu

Keywords

geometric optical design, micro-optical devices, image analysis, low-light night vision, bionic image intensifier

Abstract

Enhancing image brightness under low light conditions is crucial. The traditional night vision technology depends on the development of photoelectric materials and accurate image processing algorithms. Inspired by the structure of elephant-nose fish, we construct a bionic image intensifier (BII) model. The BII is a planar array based on the concentrating principle of the compound parabolic concentrator (CPC). This solution is based on pure optical design and independent. Through light tracing, the simulation results show that the brightness of the image is improved and good image uniformity is obtained. Quantitative analysis of the geometric concentration ratio (GCR) and the image uniformity is used to optimize CPC structure parameters. At the same time, we also discuss the influence of CPC structural parameters on image continuity, uniformity and geometric concentration ratio. The optimization results are as follows: the input port diameter is 50 μm, the output port diameter is 10 μm, the height is 90 μm, the GCR is 5.61, and the image uniformity is 95.30%. The comprehensive performance of the BII achieves the best.

Vol. 50
Issue 4
Article No: 04
pp. 551-566

2.03 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology