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首页> 外文期刊>Optical and quantum electronics >Liquid progressive multifocal lenses based on asymmetrical freeform surface structure using non-uniform thickness membranes
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Liquid progressive multifocal lenses based on asymmetrical freeform surface structure using non-uniform thickness membranes

机译：基于非均匀自由曲面表面结构且使用非均匀厚度膜的液体渐进多焦点镜片

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摘要

For a liquid progressive multifocal lens with an elastic membrane deformed by liquid pressure, to realize a reasonably power distribution, an asymmetric deformation characteristics of membrane surface is needed. Based on the asymmetric freeform surface structure, this paper proposed liquid progressive multifocal lenses focused by liquid with non-uniform thickness membranes and different boundary constraints. The structure and mathematical model of power distribution for the lens are introduced. The membrane deformation and the corresponding power distribution of the lenses with asymmetric freeform surface are predicted and compared under uniform pressure load and different boundary constraints. A membrane deformation testing system is constructed to analyze the power distribution of fabricated lenses through measuring the surface sag using laser displacement sensor and corresponding optical power distribution can be calculated. Experimental results show that the liquid lenses can realize as liquid progressive multifocal lenses after liquid accommodation, meanwhile, the trends of power distribution of the lenses generally agree well with simulations.
机译：为了使弹性膜因压力而变形的液体渐进多焦点镜片，为了实现合理的功率分布，需要膜表面的非对称变形特性。基于不对称自由曲面的结构，提出了一种液体渐进多焦点透镜，其聚焦膜厚度不均匀，边界约束不同。介绍了镜片度数分布的结构和数学模型。在均匀压力载荷和不同边界约束下，预测并比较了具有不对称自由曲面的透镜的膜变形和相应的功率分布。构建膜变形测试系统，通过使用激光位移传感器测量表面下垂来分析制成的镜片的功率分布，并可以计算出相应的光功率分布。实验结果表明，液体晶状体经过液体容纳后可以实现为液体渐进多焦点晶状体，同时，镜片的光焦度分布趋势总体上与模拟吻合良好。

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