【摘要】 根据高斯光学原理,以液体透镜为核心元件,研究了无移动镜组变焦系统的设计方法。从医用内窥镜的使用要求出发,设计了一种二元变焦内窥镜系统。该系统可通过气压或液压控制液体透镜表面曲率变化,实现1.5倍变倍比,在1.8 mm和2.7 mm焦距下都获得了良好的成像质量。更多还原

【Abstract】 Tunable-focus liquid lens is considered as a kind of novel device based on biological vision system,which has many advantages such as little volume and weight,easily to be integrated and active zooming.A method of designing zoom optical system without moving lens is demonstrated according the theory of Gaussian optics,in which the liquid lenses are used as core elements.And a bifocal zoom endoscope system is presented,in which the curvature of the liquid lens can he controlled by air pressure or hydraulic pressure.A zooming factor of 1.5 is realized.And the acceptable imaging quality is gotten at both focal length of 1.8 mm and 2.7 mm of the system.更多还原