Study on Focal-Length Function or Positive Compensating Zoom Lens

Jin Chunshui

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Study on Focal-Length Function or Positive Compensating Zoom Lens

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- Study on Focal-Length Function or Positive Compensating Zoom Lens
- Optics and Precision Engineering Vol. 4, Issue 4, Pages: 11-15(1996)
- 作者机构：
  
  中国科学院长春光学精密机械研究所长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：27 December 1995，
  
  Published Online：15 August 1996，
  
  Published：15 August 1996
- 稿件说明：
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金春水. 正组补偿变焦距镜头的焦距输出函数[J]. 光学精密工程, 1996,(4): 11-15

Jin Chunshui. Study on Focal-Length Function or Positive Compensating Zoom Lens[J]. Editorial Office of Optics and Precision Engineering, 1996,(4): 11-15
金春水. 正组补偿变焦距镜头的焦距输出函数[J]. 光学精密工程, 1996,(4): 11-15 DOI：

Jin Chunshui. Study on Focal-Length Function or Positive Compensating Zoom Lens[J]. Editorial Office of Optics and Precision Engineering, 1996,(4): 11-15 DOI：

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.

Abstract

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.

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