论文部分内容阅读
制造非球面的复杂性直到目前仍然阻碍着非球面在各种光学仪器中的广泛应用,因此非球面的再生产成为非常迫切的任务为了在平面基片和球面基片上得到非球面复制品,过去曾试行过一种用以复制绕射光栅的方法,结果成功地得到相当精确的非球面复制品,误差不超过两个干涉光波带,标准样品采用聚酯树酯,非球面度达10微米。但是,聚酯树酯在聚合作用后体积收缩率大(8-10％),从而使标准
Aspheric complexity has until now been still hampered by the widespread use of aspheric surfaces in a variety of optical instruments and aspheric reproduction has therefore become a very urgent task. In order to obtain aspherical replicas on planar and spherical substrates, A trial of a method for copying diffraction gratings resulted in the successful production of fairly accurate aspheric replicas with an error of no more than two interference light bands and a standard sample of polyester resin with asphericity of up to 10 microns. However, polyester resins have a large volume shrinkage (8-10%) after polymerization, so that the standard