Based on third-order aberration theory, a null testing system using compensator for an off-axis convex hyperboloid mirror is designed, it avoids that the aperture of auxiliary lens is overmuch larger when the Hindle test is applied.
从三级像差理论出发，设计出了离轴凸双曲面反射镜的Null补偿检验系统，克服了采用Hindle球检验口径过大的问题。
A new aperture compensator circuit for Colour TV sets
彩色电视机中一种新型的勾边电路
By means of null compensator testing, an off-axis aspherical mirror with a lager-aperture rectangle is tested successfully.
通过非球面的零位补偿法，完成了对矩形大口径离轴非球面镜的检测。
Testing of paraboloid mirror with super relative aperture using compensator
超大相对孔径抛物面反射镜的补偿检验
In the last part, the experiment of the new compensator is described. The resolving power in the centre of the image frame is 40 Iines/mm while the shutter ratio 1/5 and the relative aperture 1/10.
最后叙述了补偿器实验，在快门系数1/5，相对孔径D/f'为1/10时，画幅中心摄影分辩率为40对线/毫米。