Double cam focusing mechanism of space camera with wide field and long-focal-plane

LIU Lei; CAO Guo-hua

doi:10.3788/OPE.20122009.1939

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Double cam focusing mechanism of space camera with wide field and long-focal-plane

Article | 更新时间：2020-08-12

- Double cam focusing mechanism of space camera with wide field and long-focal-plane
- Optics and Precision Engineering Vol. 20, Issue 9, Pages: 1939-1944(2012)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 长春理工大学机电工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122009.1939
  CLC： V447.3;V443.5
- Received：16 February 2012，
  
  Revised：18 March 2012，
  
  Published：10 September 2012
- 稿件说明：
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刘磊, 曹国华. 大视场长焦面光学遥感器双凸轮式焦面调焦机构[J]. 光学精密工程, 2012,20(9): 1939-1944

LIU Lei, CAO Guo-hua. Double cam focusing mechanism of space camera with wide field and long-focal-plane[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1939-1944
刘磊, 曹国华. 大视场长焦面光学遥感器双凸轮式焦面调焦机构[J]. 光学精密工程, 2012,20(9): 1939-1944 DOI： 10.3788/OPE.20122009.1939.

LIU Lei, CAO Guo-hua. Double cam focusing mechanism of space camera with wide field and long-focal-plane[J]. Editorial Office of Optics and Precision Engineering, 2012,20(9): 1939-1944 DOI： 10.3788/OPE.20122009.1939.

摘要

为保证焦面长度大于600 mm 的大视场空间光学遥感器在空间环境下的成像质量

设计了一套在2 mm调焦范围内焦面组件倾斜小于7、定位精度优于0.01 mm的焦面调焦机构。针对系统对调焦精度、力学环境、真空环境的要求

该调焦机构采用双凸轮驱动技术来满足调焦精度要求;采用失电制动器自锁技术

使相机经发射等力学环境冲击后像面位置仍保持稳定。此外

采用高刚度导轨和轴承使调焦机构具有较高的动态刚度。设计分析及实验证明

该套焦面调焦机构具有较高的调焦精度和可靠性

能够在复杂的空间环境下完成调焦任务

提高遥感器的成像质量。

Abstract

A focusing mechanism with a tilt of focusing plane assembly less than 7 "

positioning accuracy better than 0.01 mm in the 2 mm focusing range was designed to ensure the best image quality for a wide field space camera with a focal plane length more than 600 mm. To meet the requirements of the focusing mechanism for focusing accuracy

mechanical environments and the vacuum environments

the dual-cam drive technology was used to complete the accurate focusing

and the loss of power brake self-locking technology allowed the camera to be a stable image plane position under the impact of mechanical environments. Furthermore

the high stiffness rail and bearings were used in the focusing mechanism to obtain a high dynamic stiffness. The design analysis and experimental results show that the dual focal plane cam-driven focusing mechanism has high focusing precision and high reliability and is able to complete the focuing and improve the image quality of space cameras in the complex space environments.

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references

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