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Miniaturized variable-focus objective employing a liquid-filled tunable aspherical lens

机译:采用充液式可调非球面透镜的小型可变焦物镜

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摘要

We discuss the design, realization, and characterization of a miniaturized focus-tunable camera objective featuring a gravity-neutral, liquid-tunable aspherical lens and compare its performance to an equivalent system optimized for a conventional tunable lens. In addition to the innovative component, the objective design features three fixed elements and an aperture, which are all assembled to form a 5×5×13 mm system. With an image sensor size of 3 mm, the objective provides a viewing angle of 40 deg. By tuning the lens in its gravity-neutral range, the object distance can be shifted from 5 mm to infinity, with image-side cutoff frequency remaining above 84 lp/mm across the entire range. Through ray-tracing simulations and experimental results, we demonstrate that for optical trains of identical complexity, tunable aspherical lenses provide substantially better imaging quality over the object distance range of interest, compared to conventional, spherical tunable lenses.
机译:我们讨论了一种具有重力中性,液体可调非球面透镜的小型聚焦可调摄像机物镜的设计,实现和特性,并将其性能与针对常规可调透镜优化的等效系统进行了比较。除了创新的组件外,物镜设计还具有三个固定元件和一个光圈,它们全部组装成一个5×5×13 mm的系统。物镜的尺寸为3 mm,物镜提供40度的视角。通过将镜头调整到其重力中性范围,可以将物距从5 mm移至无穷远,并且像方截止频率在整个范围内保持在84 lp / mm以上。通过光线跟踪模拟和实验结果,我们证明,与传统的球形可调透镜相比,对于复杂度相同的光学系统,可调非球面透镜在目标物距范围内可提供更好的成像质量。

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