正组补偿变焦距镜头的焦距输出函数  

Study on Focal-Length Function or Positive Compensating Zoom Lens

作　　者：金春水[1] 

机构地区：[1]中国科学院长春光学精密机械研究所

出　　处：《光学精密工程》1996年第4期11-15,共5页Optics and Precision Engineering

摘　　要：用于精密跟踪测量的变焦距镜头不同于普通的变焦距镜头，要求其在变信过程中实时输出高精度的系统焦距值。本文从几何光学理论出发，并结合实际变焦距镜头的参数，讨论了二组元大变倍比正组补偿交焦距镜头的焦距输出函数，可避免对变焦距镜头实际焦距的逐点标定工作．The zoom lens used in capturing and tracing is different from 11ormal zoom lens. It mustoutput the focal-length accurately while verying its focal-length. Ths paper studies the focal length function of the two-component, large zoom ratio, positive compensating zoom lens byusing the actural zoom lens system parameter and gives a method of determining the focallength function. By useing this method, we can avoid the work of point-to--point calibratingfor zoom lens.

关 键 词：正组补偿变焦距镜头 变焦距系统 焦距函数 电视测量系统 图像处理 精密加工 

分 类 号：TN942.21[电子电信—信号与信息处理]