Development of focusing mechanism for space camera

Zi-qing JIANG; Jian-jun JIA

doi:10.3788/OPE.20182612.2956

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Development of focusing mechanism for space camera

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-07-05

- Development of focusing mechanism for space camera
- Optics and Precision Engineering Vol. 26, Issue 12, Pages: 2956-2962(2018)
- 作者机构：
  
  1.中国科学院大学, 北京 100049
  2.中国科学院上海技术物理研究所, 上海 200083
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182612.2956
  CLC： V443.5;TH703
- Received：09 May 2018，
  
  Accepted：14 June 2018，
  
  Published：25 December 2018
- 稿件说明：
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Zi-qing JIANG, Jian-jun JIA. Development of focusing mechanism for space camera[J]. Optics and precision engineering, 2018, 26(12): 2956-2962.
DOI：

Zi-qing JIANG, Jian-jun JIA. Development of focusing mechanism for space camera[J]. Optics and precision engineering, 2018, 26(12): 2956-2962. DOI： 10.3788/OPE.20182612.2956.

摘要

高分辨率空间相机受发射段恶劣的力学环境以及空间复杂的温度环境影响，光学系统会产生微小的离焦量。为保证相机成像质量，本文设计了一种由蜗轮蜗杆与凸轮滑块机构组成的新型高精度调焦机构来修正离焦量。该设计通过蜗轮蜗杆实现第一级减速，并且使驱动器旋转轴与光轴正交，使机构更紧凑。通过凸轮滑块机构进一步进行减速，同时将旋转运动转化为直线运动，并通过直线导轨保证滑块的直线运动精度。该机构体积小、精度高，并且能实现断电自锁。机构运动副上溅射固体润滑涂层，防止发生真空冷焊。结合机构自身的特点，分析了机构调焦的分辨率与误差。对该机构开展了力学与热真空循环试验，试验前后对机构的精度指标进行了对比测试。试验与测试结果表明：该机构环境试验后性能参数正常，其调焦位移误差优于5.8

m，线性度优于0.3%，偏摆角优于14″。在热光试验中通过调整焦面，成像质量有显著的提升。该调焦机构能够满足光学系统的精度与环境适应性要求。

Abstract

A small amount of defocus is generated in the optical system of high-resolution space cameras owing to the harsh mechanical environment of the launch section and the complex temperature environment of the orbit. To ensure the image quality of the camera and correct the defocus

a new high-precision focusing mechanism

consisting of a worm gear and a cam slider

was designed. The first stage of deceleration was achieved through the worm gear in this design. The drive's rotary axis was orthogonal to the optical axis

hence

the mechanism was more compact. Further deceleration was performed by the cam slider mechanism

and the rotary motion was converted into a linear motion; the linear motion accuracy of the slider was provided by a linear guide. The mechanism is small

has high precision

and is capable of self-locking in the case of a power failure. The mechanism motion pair was coated with a solid lubricant to prevent vacuum cold welding. According to the characteristics of the mechanism

the resolution and error of the focusing mechanism were analyzed. Mechanical and thermal vacuum cycle tests were carried out on the mechanism. Various precision indicators of the mechanism were compared and tested before and after the experiments. The results show that the mechanism performance is normal after the environmental test

the focus shift error is better than 5.8

the linearity is better than 0.3%

and the yaw angle is better than 14″. In the thermo-optical test

the focal plane was adjusted by the focusing mechanism

and the image quality was significantly improved. The focusing mechanism can meet the accuracy and environmental adaptability requirements of the optical system.

关键词

Keywords

references

安源, 齐迎春.空间相机直线调焦机构的设计[J].光学精密工程, 2009, 17(3):609-614.

AN Y, QI Y CH. Design of straight-line focusing mechanism for space camera[J]. Opt. Precision Eng., 2009, 17(3):609-614.(in Chinese)

陈洪达, 陈永和, 史婷婷, 等.空间相机调焦机构误差分析[J].光学精密工程, 2013, 21(2):1349-1356.

CHEN H D, CHEN Y H, SHI T T, et al..Error analysis for focusing mechanism of space camera[J]. Opt. Precision Eng., 2013, 21(2):1349-1356. (in Chinese)

范洪杰, 董吉洪, 李威, 等.一种空间相机调焦机构的设计与分析[J].长春理工大学学报:自然科学版, 2016, 39(3):1-4.

FAN H J, DONG J H, LI W, et al..Design and analysis of focusing mechanism for space camera[J]. Journal of Changchun University of Science and Technology:Natural Science Edition, 2016, 39(3):1-4. (in Chinese)

郭权锋, 董吉洪, 李威, 等.长焦距空间相机调焦机构设计[J].光机电信息, 2010, 27(11):105-109.

GUO Q F, DONG J H, LI W, et al..Focusing mechanism design for long focal length space camera[J]. OME Information 2010, 27(11):105-109. (in Chinese)

贾学志, 王栋, 张雷, 等.轻型空间相机调焦机构的优化设计与精度试验[J].光学精密工程, 2011, 19(8):1824-1830.

JIA X ZH, WANG D, ZHANG L, et al..Optimizing design and precision experiment of focusing mechanism in lightweight space camera[J]. Opt. Precision Eng., 2011, 19(8):1824-1830. (in Chinese)

贾学志, 张雷, 安源, 等.空间光学遥感器精密调焦机构设计与试验[J].机械工程学报, 2016, 52(13):26-30.

JIA X ZH, ZHANG L, AN Y, et al..Design and experiment research on precision focusing mechanism of space remote sensor[J]. Journal of Mechanical Engineering, 2016, 52(13):26-30. (in Chinese)

王书新, 李景林, 刘磊, 等.大尺寸焦平面空间相机调焦机构的精度分析[J].光学精密工程, 2010, 18(10):2239-2243.

WANG SH X, LI J L, LIU L, et al..Accuracy analysis of focusing mechanism in space camera with long-focal-plane[J]. Opt. Precision Eng., 2010, 18(10):2239-2243. (in Chinese)

王智, 张立平, 李朝辉, 等.传输型立体测绘相机的调焦机构设计[J].光学精密工程, 2009, 17(5):1051-1056.

WANG ZH, ZHANG L P, LI CH H, et al.. Design of focusing mechanism of space tridimensional mapping camera[J]. Opt. Precision Eng., 2009, 17(5):1051-1056. (in Chinese)

苏东风, 贾继强, 刘波, 等.航空相机偏心凸轮调焦机构中的滚子运动轨迹[J].电子测量与仪器学报, 2015, 29(10):1472-1477.

SU D F, JIA J Q, LIU B, et al..The trajectory of roller in offset cam focusing mechanism for aerial camera[J]. Journal of Electronic Measurement and Instrumentation, 2015, 29(10):1472-1477. (in Chinese)

杨会生, 张银鹤, 柴方茂, 等.离轴三反空间相机调焦机构设计[J].光学精密工程, 2013, 21(4):948-953.

YANG H SH, ZHANG Y H, CHAI F M, et al..Design of focusing mechanism for off-axis TMA space camera[J]. Opt. Precision Eng., 2013, 21(4):948-953. (in Chinese)

杨会生, 李志来, 樊延超, 等.空间相机均力输出式调焦机构[J].光学精密工程, 2016, 24(4):796-803.

YANG H SH, LI ZH L, FAN Y CH, et al..Focusing mechanism with equal output forces for space camera[J]. Opt. Precision Eng., 2016, 24(4):796-803. (in Chinese)

徐灏, 邱宣怀, 巩云鹏, 等.机械设计手册(第三卷)[M].北京:机械工业出版社, 1992.

XU H, QIU X H, GONG Y P, et al..Machine Design Handbook(Volumn 3)[M]. Beijing:Machinery Industry Press, 1992. (in Chinese)

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