摘要
本文将传统的朗契检验的物理原理和同相位探测技术结合起来，解决了用其它干涉测量方法所难以解决的大量值波差或非球面波面的检测，并提供了一个简单而有效的检测方法。在该方法中，横向移动朗契光栅，使得朗契图的辐射光通量随时间作周期性变化，运用同相位探测技术来求取朗契图所表示的波象差的两个斜率面，利用Ｚｅｒｎｉｋｅ多项式拟合算法由这两个斜率面复原出波象差，并结合实验装置实测了大象差系统的波象差。
The combination of the conventional Ronchi test and synchronous phase detection methodin communication theory measures a large wavefront aberration or an aspheric wavefront,which isdifficult to be measured in other interferometric methods. In a common setup for the Ronchi test,moving the Ronchi grating sideways causes the irradiance of the Ronchigram to vary periodically withtime. This enables us to use the synchronous phase detection method in the Ronchi test to receive twoslope plane representing wavefront aberration in Ronchigram. We restore the wavefront aberrationwith Zernike polynomial fitting algorithm and associate the experimental facility to actually measurethe large wavefront aberration system.
出处
《光子学报》
EI
CAS
CSCD
1996年第12期1125-1130,共6页
Acta Photonica Sinica
关键词
朗契检验
同相位探测
光学系统
象质
Ronchi test
Synchronous phase detection method
Zernike polynomial fitting algorithm.
