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随着计算机技术和高精数控工艺的出现和发展，非球面透镜的设计与加工变得比较容易。因而在各种复杂的光学系统中采用非球面透镜己不是特殊的情况，本文从理论和实验上初步讨论了非球面透镜的纵向球差，并与折射本领基本相同的球面透镜进行了比较。结果表明，非球面透镜明显优于球面透镜。
With the advent and development of computer technology and high-precision numerical control process, the design and processing of aspherical lens becomes easier. Therefore, it is no special case to use aspherical lenses in various complicated optical systems. This paper theoretically and experimentally discussed the longitudinal spherical aberration of aspherical lenses and compared them with the spherical lenses with the same refractive power. The results show that aspherical lenses are significantly better than spherical lenses.