Zoom lenses design of joint transform correlator

摘要

In this paper, a zoom lens with magnification of 20x based on mechanical compensation of the implementation is designed with the program ZEMAX for the joint transform correlator(JTC), the working waveband of zoom lens is visible light. It's relative aperture is 1:4, and focal length is 12mm ～ 235mm. Detector is 1/2 inch CCD matrix with pixel size of 10×10 μm. It has high zoom ratio, the image size changes sequential with good quality in the stable image plane. The system meets the requirement of the field of view and the size of image depending on different distance target.