透射凸二次非球面检验方法的研究

透射凸二次非球面具有自消球差的能力。只要像距、物距、材料的折射率及二次曲面系数之间满足一定的条件 ,则物点与像点就具有消球差的成像关系。研究了二次非球面系数e2 值与成像放大率 β 的关系 ,目的在于为透射凸二次非球面的检验找到普遍适用的范围。实例计算和实际的应用表明 ,对于中小口径的凸非球面来说 ,透射补偿法是比较实用的检验方法 ,特别是此种方法可以检验一些凸的扁球面。

Study on testing of refractive convex conic aspheric surface

Refractive convex conic aspheric surface has selfaplanatic capability, as long as the object and image distances, refraction index of material and th e conic constant satisfy certain condition, then, object point and image point h ave aplanatic imaging relationship. The relationships between e 2 and β are discussed in details, aiming at finding the generally available range on testing the refractive convex conic surfaces. The example calculation with the m ethod compensating reflection inside the aspheres is compared.