50mm标准照相物镜折/衍混合设计

Hybrid Diffractive/refractive Design of a 50mm- Focal- Length Camera Lenses

在高斯物镜的基础上,通过移去一片负镜片,同时采用折衍混合消色差设计的方法,利用ZEMAX光学设计软件优化设计了一个工作在可见光波段,焦距50mm、视场2w=47°、F/#为1:4的标准折/衍混合型照相物镜.设计结果表明,该镜头工作在可见光波段时,像差得到了较好地改善平衡,具有好的成像性能,是一个实用的照相镜头.

An hybrid diffractive-refractive camera lens is designed in ZEMAX .In the design of lenses, we remove a negative element of the double-Gauss, the chromatic abberation is balanced by adding a binary diffractive surface and the other monochromatic aberrations are reduced and balanced by some sphere surfaces and a conic aspheric surface. The focal distance of the lenses is 50mm, the full field of views is 47° and F/# is 1：4. It is shown that the aberrations of the system are reduced and balanced perfectly, and the hybrid diffractive-refractive camera lenses could work perfectly in the visible wavelength, and can be used in camera.