convex-concave lens

基本解释

We fabricated a large computer-generated holography on a concave lens surface to test the convex secondary mirrors surface.
在凹透镜表面上制作出了用于凸非球面检测的曲面全息图。
Jinke Technology can produce flat convex ZnSe lens, flat concave ZnSe lens, double-side convex ZnSe lens, double-side concave ZnSe lens and other ZnSe or Ge lens.
劲科科技可以生产加工多种规格的平凸硒化锌透镜、平凹硒化锌透镜、双凸硒化锌透镜、双凹硒化锌透镜等各种硒化锌、锗透镜。
Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；