Abstract
For single non-uniform surface compound eyes cannot achieve zoom imaging, resulting in poor imaging and other issues, a new type of aspherical artificial compound eye structure with variable focal length is proposed in this paper. The structure divides the surface compound eye into three fan-shaped areas, and different focal lengths of the micro-lens in different area make the artificial compound eye zoom in a certain range. The focal length and size of the micro-lens are determined by the area and the location of the micro-lens. The optimization of aspherical array of the micro-lens is calculated and the spherical aberration in each area is reduced to one percent of the initial value. Through simulation analysis, the designed artificial compound eye structure can realize the focal length adjustment, and effectively reduce the problem of the poor imaging quality of the curved compound eye edge. As a result, the aspherical artificial compound eye sample with the number of eyes of n=61 and the diameter of the base of 8.66mm was prepared using the molding method. The mutual relationship between the eyes of the child was calibrated and a mathematical model for the simultaneous identification of multiple sub eyes was established. An artificial compound eye positioning experimental system with the error value less than 10% was set up through a number of micro-lens capture target point settlement coordinates.
Highlights
The continuous improvement of the new artificial eye compound structure in the imaging field of view and image quality has made it highly potential for multi-aperture imaging, battlefield intelligence gathering, satellite remote sensing image acquisition, target detection and tracking.1 The structure of multiple sub-eyes arrays, which is unique to compound eyes, and multiple sub-eyes simultaneously capture target points have a strong ability to centrally process neural information.2–5,8 it is very suitable for high-speed moving target recognition, positioning, and accurate target recognition
The artificial compound eye imaging system continuously makes improvements based on the principle of simultaneous detection of target point information by multiple sub-eyes of insect compound eyes in nature
According to the trace results, it can be found that the incident ray corresponding to each sub eye can be focused on the light detection target surface, but due to the spherical structure of the surface structure of the micro lenses at all levels, a larger spherical aberration exists in the compound eye model, which affects the overall imaging effects, and has a greater impact on target tracking and multi-target positioning in later use of compound eye, the optimization of aspheric array of the micro lenses at all levels was performed to improve the overall imaging quality of the compound eye
Summary
The continuous improvement of the new artificial eye compound structure in the imaging field of view and image quality has made it highly potential for multi-aperture imaging, battlefield intelligence gathering, satellite remote sensing image acquisition, target detection and tracking. The structure of multiple sub-eyes arrays, which is unique to compound eyes, and multiple sub-eyes simultaneously capture target points have a strong ability to centrally process neural information. it is very suitable for high-speed moving target recognition, positioning, and accurate target recognition. The structure of multiple sub-eyes arrays, which is unique to compound eyes, and multiple sub-eyes simultaneously capture target points have a strong ability to centrally process neural information.. The structure of multiple sub-eyes arrays, which is unique to compound eyes, and multiple sub-eyes simultaneously capture target points have a strong ability to centrally process neural information.2–5,8 It is very suitable for high-speed moving target recognition, positioning, and accurate target recognition. The artificial compound eye imaging system continuously makes improvements based on the principle of simultaneous detection of target point information by multiple sub-eyes of insect compound eyes in nature.. By calibrating the position of each sub-eye in the three-dimensional model of the compound eye of the zoom lens, the three-dimensional coordinates of the target point are obtained by solving the over-qualified equations using the least-squares method. The artificial compound eye was prepared by the moulding process, and a compound eye imaging and positioning experiment system was set up to test the imaging performance and target accuracy of the system
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