Multiscale Wide-field High-resolution Photoelectric Imaging System Based On Double-Gaussian Lens

With the development of photoelectric imaging technology,the application fields of photoelectric imaging equipment are gradually increasing,but traditional photoelectric imaging systems cannot fully meet the new requirements.Therefore,modern photoelectric imaging systems need to have higher performance:higher(high resolution),farther(far distance),wider(wide imaging area).Traditional photoelectric imaging systems usually increase the resolution and increase the working distance by increasing the relative aperture,increasing the focal length,and increasing the complexity of the optical system.The traditional photoelectric imaging method has the problem of mutual restriction of wide field of view and high resolution.Therefore,the traditional optical system cannot fully meet the application requirements.Aiming at the problem of traditional photoelectric imaging system,based on the design idea of multi-scale optical system,this paper adopts a joint design method of large-scale double-Gaussian optical system and small-scale secondary optical system.Increase the collection of target information,and the secondary optical system further corrects the system aberration and improves the resolution to achieve a wide field of view and high-resolution imaging.In this paper,through the analysis of multi-scale theory,the idea of joint design of optical systems of different scales is established,and then the simulation of the double-Gaussian structure,the secondary optical system,and the integrated optical system of both,and finally the arrangement of the array of secondary optical systems The main contents are as follows:(1)Multi-scale imaging theory uses optical system performance saturation to characterize the system information transfer efficiency to quantify the imaging performance of the optical system,to illustrate that the imaging method of this system can improve the realization of wide-field high-resolution imaging;The design principle of the system is to allocate the aberrations of the primary objective optical system and the secondary optical system to clarify the aberration correction directions of the double-Gaussian-like optical system and the secondary optical system.(2)Using Gaussian optics and traditional aberration theory,design and simulate the concentric spherical lens,further improve the design based on the concentric spherical lens to obtain a double Gaussian structure,and through the imaging quality,economic benefits and processing of the two main objective compare with the difficulty of installation and adjustment to determine the selection of the main objective lens as a double-Gaussian structure.(3)Through the analysis of the role and characteristics of the secondary optical system,the initial structure of the secondary optical system is determined and optimized.Then the joint optimization design of the secondary optical system and the double-Gaussian structure is carried out,and the overall optical system is improved based on the principle of telecentricity,and the problem of image stitching is solved to a certain extent.(4)Aiming at the imaging method of this system,a calculation method of multi-aperture array is designed to determine the parameters such as the radius of curvature of the array in the array,the position of the secondary optical system,and the number of lenses of the secondary optical system.For the characteristics of the image,a high-speed image stitching algorithm is adopted to realize the sub-image stitching and the feasibility of the multi-aperture arrangement has been verified.The multiscale wide-field high-resolution photoelectric imaging system based on the double-Gaussian structure designed in this paper has a diffuse spot radius of less than 2.3 ?m and is close to the Airy spot size;the maximum curvature of the field curvature is less than ± 40?m,and the maximum distortion ratio does not exceed 0.05%.The telecentricity is less than 0.05,the number of micro cameras is 504,and the total pixels are about 2.05 billion pixels.The system provides new ideas for the development of wide-field high-resolution imaging,and has great application prospects in border protection,key area protection,aerial surveying and mapping,and marine search and rescue.