通常光学干涉仪是基于双(多)光束干涉原理,而全息干涉仪是基于两次曝光的全息图再现时的衍射干涉效应,都应用了光波干涉原理.它们的测量是以波长为尺度的,因此对于强变化位相体本身的位相变化是无能为力的.本文提出一种不同于位相相干的方法,即非相干光的编码板照相剪切干涉法. Usually optical interferometer is based on the principle of double (multiple) beam interference, and holographic interferometer is based on the diffraction interference effect of double exposure hologram reproduction, have applied the principle of light wave interference. Their measurement is based on the wavelength scale, So it is powerless to change the phase of the strong phase itself.This paper presents a method different from the phase coherence method, namely the incoherent light coding plate photographic shear interferometry.