Design of high ratio middle infrared continuous zoom optical system

	Design of high ratio middle infrared continuous zoom optical system
	FanZheyuan; CaoJianzhong; YangHongtao; QuEnshi; WuDengshan; Fan Zheyuan
	2011
会议名称	International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications
会议录名称	Proceedings of SPIE - The International Society for Optical Engineering
页码	81931R
会议日期	May 24, 2011 - May 24, 2011
会议地点	Beijing, China
出版地	P.O. Box 10, Bellingham, WA 98227-0044, United States
会议主办者	Chinese Society of Astronautics (CAS)
出版者	SPIE
产权排序	1
摘要	In recent years, the demand for infrared zoom systems is increasing in proportion with the development of infrared technology and its applications. To meet this demand a variety of zoom lenses have been designed. Infrared cameras operating in the 3-5μm spectral band are used in a wide variety of applications such as targeting, rescue, guidance and surveillance systems as well as other equipment. This paper using cool 320x240 detector with staring focal plane array and secondary imaging, a mid-wave optical system using mechanical-compensated with large-aperture and a zoom range of 10:1 is designed. The Pixel Dimensions of the detector is 30μm, and the wavelength between 3.7μm ∼4.8μm.The system adopts negative group variable times and positive group of compensation which can realize 33mm∼330mm continuous zoom and FOV =20.61°∼2.08°,it consists of 7 lenses including 3 aspheric surface. The length of the system is 262mm with the reflection mirror multipass optical path. The results show that the modulation transfer function(MTF)are above 0.4 within the whole focal range at spatial frequency of 17 lp/mm, and Root Mean Square (RMS) value of spot diameter were smaller than the Pixel Dimensions. After the image quality being optimized, the narcissus analysis is done and 100% cold shield efficiency is obtained. Finallythe monotonic and smooth Cam curve is given. The curve shows that the imaging plane is stable and the cam is easy to process. The system has advantages of simple structure, high image quality and short zoom path etc.
关键词	Continuous Zoom Secondary Imaging Cold Shield Efficiency Cam Curves
作者部门	飞行器光学成像与测量技术研究室
收录类别	EI ; CPCI
语种	英语
ISSN号	0277-786X
文献类型	会议论文
条目标识符	http://ir.opt.ac.cn/handle/181661/19983
专题	飞行器光学成像与测量技术研究室
通讯作者	Fan Zheyuan
推荐引用方式 GB/T 7714	FanZheyuan,CaoJianzhong,YangHongtao,et al. Design of high ratio middle infrared continuous zoom optical system[C]. P.O. Box 10, Bellingham, WA 98227-0044, United States:SPIE,2011:81931R.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Design of high ratio（933KB）			限制开放	--	请求全文