The Fourier transform characteristics of off-axis hololens was discussed, which was made by using a dot light source and an inclined parallel light.

利用一点光源和一束倾斜平行光拍摄了一种离轴全息透镜，并对其傅里叶变换特性进行了分析。

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In this paper, Based on diffracted wave diffusion theory another analysis method about the condition keeping reconstructed image separate from backdrop light for off axis hologram is given.

本文从衍射波扩散出发，提出了另一种分析离轴型全息图再现象与背景光分离条件的方法。

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However, off-axis fill has its own disadvantages, with perhaps the worst being that one now has to worry about the appearance of shadows from the fill light.

然而，离轴填充有其不足之处，也许最坏的就是一个现在要担心的样子填充光暗处。

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