中文摘要：

着重分析了微离轴干涉理论，通过自（互）相关理论确定了微离轴干涉中物参角的大小，由此推得干涉条纹的最佳空间频率．通过与传统干涉法的实验结果对比发现，微离轴干涉成像重建精度高．此外，不同直径的细胞应合理选用不同倍率的物镜，有助于提高后期相位重建的准确度，为进一步提高干涉测量的速度和准确度提供了新方法．

英文摘要：

Slightly-off-axis interferometry theory is introduced and the angle between the object and sample path is calculated via the auto-correlation （cross-correlation） theory. According to this special angle, the optimized fringe spacing is introduced. The slightly-off-axis interference system is compared with on-axis and off-axis interferometry, which is good for high resolution. It is conclu- ded that the biological cells with different size should choose the proper micro objective. As a re- suit, it is convenient for the experiment operating and the enhancement of the phase reconstruction accuracy. The above results shed more lights on novel interferometry.