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根据解析理论新的精确公式进行设计并用单点金刚石超精切削加工制备，研制出一种优化的非球凹面短程透镜．透镜含光滑无奇点圆边，与平面连接的边缘曲率半径为无限大．样品制备在４５×２０×２．５ｍｍ３的ＬｉＮｂＯ３衬底上，每片有两个孔径８ｍｍ、焦距８ｍｍ的无球差非球面短程透镜，利用６７０ｎｍ波长的半导体激光器端面耦合入样品一端，在另一端测得焦点光斑半宽度为２．９μｍ．
According to the new accurate formula of analytical theory, the design and the use of single point diamond superfinishing machining preparation, developed an optimized aspherical concave short-range lens. The lens contains a smooth, non-singular round edge and the radius of curvature of the edge connected to the plane is infinite. Samples were prepared on a 45 × 20 × 2.5mm3 LiNbO3 substrate, each having two 8mm aperture, a focal length of 8mm spherical aspheric short-range lens, the use of 670nm wavelength semiconductor laser end face into the sample one end, the other end The half width of the spotlight was measured to be 2.9 μm.