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Optical design of a 2× zoom lens for miniature imaging systems

机译:微型成像系统的2倍变焦镜头的光学设计

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摘要

The optical design of a compact 2x zoom lens in a lens barrel for miniature cameras is reported. The magnification in the optical system is achieved by means of changing positions of lens elements inside the lens barrel. Six lens elements are employed in the optical system, where up to four elements are actuated. Maximum travel distances for the moving parts are determined as 1.67 mm to reach a magnification of 2.06x, and the total track length for the telephoto zoom lens state is 9.16 mm at its most extended configuration. Manufacturability of the proposed system is also discussed using a tolerance analysis. The designed optical system is suitable for use with image sensors up to 13 MP, and it can be employed in an endoscopic camera, where the optical zoom and compact design are beneficial. It is also suitable for smartphone cameras with further enhancements and integration of voice-coil-motors and/or MEMS actuators.
机译:据报道,小型相机镜筒中有一个紧凑的2倍变焦镜头的光学设计。光学系统中的放大倍数是通过改变镜筒内部透镜元件的位置来实现的。光学系统中使用六个透镜元件,其中最多可驱动四个元件。活动部件的最大移动距离确定为1.67毫米,以达到2.06倍的放大倍率,并且在其最大扩展配置下,远摄变焦镜头状态的总光道长度为9.16毫米。还使用公差分析讨论了所提出系统的可制造性。设计的光学系统适用于高达13 MP的图像传感器,并且可用于内窥镜相机,因为光学变焦和紧凑型设计是有益的。它还适用于具有进一步增强功能并集成了音圈电机和/或MEMS执行器的智能手机相机。

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