A digital knife-edgetest system is proposed based on the traditional Foucault tester. Quantitative evaluation for the wavefront of spherical optical elements was achieved by using this test system.
在传统刀口仪的基础上，提出一种数字化刀口仪，利用该刀口仪可实现球面光学元件表面面形的定量检验。
2
Axial compression test can use double knife-edge bearing to instead spherical hinge bearing;