Grating is placed in image space of objective lens, and used as the shearing part. Light wave from reference object and measured object interfered at the image space.
它在成像物镜的像方空间放置光栅，利用光栅的衍射原理，使来自参考物和被测物的光波在像面发生干涉。
This paper discussed a method analyzing the two-step rainbow hologram. Based on the diffraction theorem of light wave, the imaging formulas of object image and slit image were derived in detail.
本文讨论了一种分析二步法彩虹全息的方法，用光波衍射理论详细推导出物体象与狭缝象的成象公式。
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