一种新颖的简易凸透镜自动测焦设计方法

摘要

提出一种凸透镜自动测焦的设计方法.该方法直接从凸透镜焦距定义出发,应用凸透镜汇聚平行光于焦点测量其焦距,平行光采用激光器→扩束-准直镜获得.巧妙运用光敏电阻阵列设计解决调"共轴"问题,恰当设计测量过程轻松给出焦距测试结果.设计集光机电技术于一体,各部分技能又都很基础,具有广泛的实用性,整体设计方案可拓性也很强,具有较高的教学价值.%A novel design method of auto-measuring the focus of a convex lens is presented.The design is based on the definition of the focal length of the convex lens,using convex lens to focus the parallel light obtained through the extender and collimator lens extending laser on focus.In this design,tuning "coaxial" is cleverly solved by the photosensitive resistor array,and the focal length is easily given by the appropriate design of measurement process.In addition,this design bases on the opto-mechatronics integration,all parts of the skills are very basic and practical,and the overall design program is also very strong extension.So,this design also has a high teaching value.