实验结果表明，半径较大的体全息透镜具有较好的深度分辨率，成像效果较为清晰。
The experimental results show that bigger size of the volume holographic lens can obtain better depth resolution, and thus the results of imaging are better.
利用局域体全息的耦合波理论，计算了该透镜衍射光的振幅分布和衍射效率。
On the basis of the coupled-wave theory of local volume holography, the amplitude distribution and the diffraction efficiency of the diffracted beams are calculated.
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