In this letter, we propose an adaptive liquid lens with tunable aperture. The proposed lens has one tunable Polydimethylsiloxane (PDMS) surface and one tunable aperture. The curvature of the PDMS surface and the tunable aperture can be controlled by one actuator. When the dyed liquid is pumped into the lens chamber, the PDMS surface becomes convex and the aperture shrinks simultaneously. The proposed lens can reduce aberrations in high power tuning range due to the tunable aperture. Besides, the proposed lens can keep depth of field (DOF) stable in the middle and short focal length. The experiment shows the minimum of positive focal length, aperture and angular resolution are measured to be 42 mm, 2.5 mm, and 52”93, respectively.

中文翻译：

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具有可调光圈的自适应液体镜头

在这封信中，我们提出了一种具有可调光圈的自适应液体镜头。建议的镜头具有一个可调聚二甲基硅氧烷 (PDMS) 表面和一个可调光圈。PDMS 表面的曲率和可调孔径可以由一个执行器控制。当染色液被泵入透镜腔时，PDMS 表面变得凸出，孔径同时收缩。由于可调光圈，所提出的镜头可以减少高功率调谐范围内的像差。此外，所提出的镜头可以在中短焦距下保持景深（DOF）稳定。实验表明，测得的正焦距、光圈和角分辨率的最小值分别为 42 mm、2.5 mm 和 52”93。