Cheng Yang, Cao Jie, Meng Lingtong, Wang Zihan, Zhang Kaiyu, Ning Yan, Hao Qun
Appl Opt. 2018 Mar 1;57(7):1679-1688. doi: 10.1364/AO.57.001679.
We propose a self-adaption focal length adjustment method of a compound and human hybrid eye with a non-uniform microlens array model (NUMLA) to reduce defocus aberration by using the liquid lens. The models are deduced and verified through simulations. The method can self-adaptively adjust the focal length according to object distance and image distance. The results show that (1) the RMS spot radii of the traditional uniform microlens array at different rings are 21 μm, 187 μm, 304 μm, 526 μm, and 803 μm. However, those of the NUMLA are 21 μm, 47 μm, 98 μm, 178 μm, and 287 μm, which indicates that the NUMLA can reduce the defocus aberration. (2) When the object distance and the image distance vary, the defocus aberration can be significantly reduced through the adjustment of the focal length, which validates the effectiveness of the proposed method. (3) The volumes of the liquid lens in the cavity at the peripheral rings are larger than that at the central rings. The results are beneficial for providing a simple solution to reduce the defocus aberration of the compound and human hybrid eye.
我们提出了一种基于非均匀微透镜阵列模型（NUMLA）的复合人眼混合自适应焦距调整方法，以通过使用液体透镜来减少离焦像差。通过模拟推导并验证了这些模型。该方法可以根据物距和像距自适应地调整焦距。结果表明：（1）传统均匀微透镜阵列在不同环处的均方根光斑半径分别为21μm、187μm、304μm、526μm和803μm。然而，NUMLA的均方根光斑半径分别为21μm、47μm、98μm、178μm和287μm，这表明NUMLA可以减少离焦像差。（2）当物距和像距变化时，通过调整焦距可以显著减少离焦像差，这验证了所提方法的有效性。（3）外围环腔中液体透镜的体积大于中心环腔中液体透镜的体积。这些结果有助于提供一种减少复合人眼混合离焦像差的简单解决方案。
