Design of swing type switching mechanism for focusing lens group in visible light television system with double focal lengths

doi:10.19650/j.cnki.cjsi.j1702479

CIOMP OpenIR

	Design of swing type switching mechanism for focusing lens group in visible light television system with double focal lengths
	Xu, Xinhang; Zhang, Fei; Xia, Wenbo
	2018
发表期刊	Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument
ISSN	2543087
卷号	39 期号:1 页码:84-91
摘要	To realize the focusing of visible light television system with double focal lengths, a swing type switching mechanism for focusing lens group with high repeatability precision and small volume is designed. Firstly, the main specifications of the switching mechanism for focusing lens group are put forward on the basis of optical system design result and function requirements of visible light television. Then, according to the specifications, the support plate for the focusing lens groups, step motor and servo control system are designed or chosen in detail. After completing the fine manufacturing, assembling and adjusting of the switching mechanism for focusing lens group and visible light television system, the switching time, repeatability precision of the switching mechanism and the imaging effect of the visible light television in two focal lengths are tested and verified, respectively. The results show that the switching mechanism for focusing lens group developed by adopting step motor driven, gear transmission torque increasing, photoelectric switch feedback, mechanical stopping precise positioning, spring tension maintaining and etc. has the advantages of small outline dimension (128 mm140 mm135 mm), short switching time (0.9 s), high repeatability precision (azimuth and pitch angles less than 20"). The switching mechanism for focusing lens group has excellent application effect in visible light television system, which provides a new choice for the switching lens group in the development of high performance, low cost visible light television system with variable focal length. 2018, Science Press. All right reserved.
关键词	Light Focusing Lenses Mechanisms Optical systems Specifications Stepping motors Switching Television systems
DOI	10.19650/j.cnki.cjsi.j1702479
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60626
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Xu, Xinhang,Zhang, Fei,Xia, Wenbo. Design of swing type switching mechanism for focusing lens group in visible light television system with double focal lengths[J]. Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument,2018,39(1):84-91.
APA	Xu, Xinhang,Zhang, Fei,&Xia, Wenbo.(2018).Design of swing type switching mechanism for focusing lens group in visible light television system with double focal lengths.Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument,39(1),84-91.
MLA	Xu, Xinhang,et al."Design of swing type switching mechanism for focusing lens group in visible light television system with double focal lengths".Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument 39.1(2018):84-91.

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