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提出了一种记录多方向全息相位光栅的新光路，详细介绍了此光路的调整方法。采用四光路同时曝光，提高了光栅的衍射效率。给出了有实用价值的实验结果和理论分析要点。
A new optical path for recording multi-directional holographic phase grating is proposed. The adjustment method of this optical path is introduced in detail. The use of four optical exposure at the same time, improve the grating diffraction efficiency. The experimental results and theoretical analysis points are given with practical value.