针对某一特殊应用设计了一款菲涅尔准直透镜,利用菲涅尔透镜的基面弯曲和单向点列半径的像差控制,实现了一维方向的高精度准直。分析比较了平面菲涅尔透镜与球基面菲涅尔透镜的像差状况,得出了两种结构透镜在本项目应用中校正像差的差异,提出了在类似菲涅尔透镜的应用中像差校正的方案及面型选择的思路。

A Fresnel lens which is designed for a special application is described. By taking advantage of a curved-base face of Fresnel lens, and controlling the X spot radius aberration of the system, the one-dimeasional accurate collimator is achieved. Aberrations of both plane and the curve Fresnel lens are calculated and analyzed. Differences of aberration correction ability, in this special application, between the two kinds of structure lens are compared, which gives a reasonable propose to the method of aberration controlling and the face shape choice mentality in the similar Fresnel lens application.