The phase film is a kind of special film coated the Shimite roofprism of binoculars.
望远镜斯密特屋脊棱镜表面镀上相位膜,可提高望远镜的观察效果。
2
The automatic test of Corner Cube Reflector (CCR), RoofPrism and Right-angle Prism is achieved by calculating the wavefront got from the digital phase-shifting interferometer.