图1所示的斜方棱镜,按以前的旧工艺,对要求并不高的1’30”平行差,还需要进行两次光胶修改,工艺流程冗长,操作繁难,机械损伤严重,合格率很低。为适应大量生产的需要,我们改进了加工方法。改进后,采用蜡胶代替原来的火漆和光胶胶盘,使斜方棱镜的产量和加工质量得到了极为显著的 The rhomboid prism shown in FIG. 1, according to the previous old process, needs a two-time optical glue modification to the poorly-required 1’30 "parallel difference. The process is lengthy, the operation is complicated, the mechanical damage is serious, and the pass rate Very low.In order to meet the needs of mass production, we improved the processing method.After the improvement, the use of wax instead of the original fire-lacquer and light plastic plate, the rhombic prism production and processing quality has been extremely significant