Research And Design Of Optical System Based On Wide-angle Lens

In the era of highly developing information,People constantly pursue the acquisition of real-time information in the whole airspace and the whole time domain,the conventional view of field has been unable to meet people's needs.The larger view of field of the optical lens mean the larger range of imaging,and we will catch more information,then there was the wide-lens have large view of field.Wide-angle spatial information can been obtained using rotation/stepping scanning technology and multi-lens stitching technology,comprehensive consideration can be given to the use of volume,weight,power consumption and real-time information acquisition,the research technology of single wide-angle lens has great application prospect.In order to solve the problems of wide Angle lens,such as large distortion,large aberration and large space volume,this paper studies the reverse telephoto structure and the imaging theory of diffraction optical elements.Based on these two theories,three kinds of wide-angle lens been designed by using optical design software.In the process of researching and designing,the method of image quality evaluation and method of analysis in the design process are also studying and introduced in this paper.Research methods:(1)In this paper,the disadvantages of the dual-gauss structure design about wide-angle lens is been analyzed.The feasibility of designing a wide-angle lens with reverse telephoto structure and the points needing attention in the design process are analyzing by using gauss optics theory.(2)The optical imaging principle of binary diffraction element is been studied by comparing the lens phase transformation with the wave optical.On this basis,the binary diffraction element is been used to replace the refractive lens in the hybrid optical system.(3)With CEDEV and ZEMAX as the main optical design software,the macro language related to analysis and optimization was been written for design analysis.Based on the theory of aberration,ZEMAX software was been used as the main tool for image quality evaluation.TRACEPRO software was been used to introduce ghost analysis and other methods.Research results:(1)Based on the reverse telephoto structure,a low distortion camera lens with large view of field was been designed by using ZEMAX,CODEV and other software.(2)A wide Angle zoom lens for mobile phone is been designed by optical design software through the combination of two small aberration lens systems.(3)Based on the principle of optical imaging of binary diffractive elements,a hybrid wide-angle lens is been designed by optical design software.(4)In the process of studying the wide-angle lens,the macro of focal length based on CODEV software was been written to solve the problem of slow calculation in corresponding processing by ZEMAX software.In this paper,a macro corresponding to the Angle of field based on the image height of the wide Angle lens was written by ZEMAX software to solve the problem that the Angle of field could not track in the analysis of the wide Angle lens.