一张剪切干涉图不足以描述一个波面.

A single shearing interferogram is not sufficient to describe a wavefront.

相移技术在干涉图处理中应用较为广泛.

Phase shifting technique has been widely applied in the interferogram processing.

干涉图中初相位因子随光程差改变缓慢变化或快速变化，对相位误差的影响也不全相同。

The original phase of the interferogram is changed slowly or rapidly with the optical path difference changed, and the phase error is different too.

讨论了降低干涉图P-V值的方法以及不同面形的近柱面在该装置下的可检性。

The method to reduce P-V value of the interferograms and the testability of all kinds of near-cylindrical surfaces under the testing set are discussed.

PZT移相时的线性好坏对干涉仪采集的移相干涉图的质量有着较大的影响。

The linearity of the PZT has a big influence on the quality of the interference pattern.