随着机器视觉技术在先进制造系统、机器人系统、智能监控、航天**等领域的广泛应用, 仿生视觉系统的小型化、灵巧化成为研究的重要方向之一。针对传统机器视觉系统变焦结构复杂、易磨损、寿命低等缺点, 在分析液体透镜原理和成像特点的基础上, 设计并搭建了一种基于液体透镜的仿人眼光学系统, 系统的主要技术指标为: 焦距范围18.5 mm~22.5 mm, 镜头变倍比为1.22, 视场角为38°×24°。设计结果符合各项指标, 像质在不同焦距处均满足使用要求, 可实现实时对焦。整个光学系统尺寸为36 mm×55 mm×30 mm, 结构紧凑, 实用性强。

With the wide applications of machine vision technology in the fields of advanced manufacturing system, robot system, intelligent monitoring and aerospace military industry, the miniaturization and dexterization of bionic vision system has become one of the important research directions. Aiming at the shortcomings of traditional machine vision system, such as complex zoom structure, easy wear and low life, a bionic optical system with liquid lens was designed and built on the basis of the principle and imaging characteristics of liquid lens. The main technical parameters of the system are as follows: the focal length range is 18.5 mm~22.5 mm, the lens zoom ratio is 1.22, and the field angle is 38 °×24 °. The design results accord with each index, and the image quality can meet the requirements at different focal lengths, which can realize real-time focusing. The size of the whole optical system is 36 mm×55 mm×30 mm, which has a compact structure and strong practicability.