Design Of Fourier Transform Lens

With the progress of times, optical information processing as a new information processing approach has been fully developed. Fourier transform lens has also been fully developed for optical information processing system as a main component. Today, Fourier transform lens have appeared many different types, and greatly promote its range of applications.In this paper, The system of Digital Holographic-optical reproduction is designed, which is based on EALCD, CCD and Fourier transform lens, and making full use of the advantages of digital holographic reproduction and traditional holographic reproduction. According to the actual needs in this system, the specific parameters of lens are determined. The different type of Fourier transform lens is four-approximate symmetric and double separated structure, and designed by ZEMAX of auto designed software. Besides, the process of optimization, tolerance analysis and image quality evaluation is briefly described. These Fourier transform lens has many advantages, such as simple and compact structure, high-quality imaging, has a large aperture and field and so on.