Design of high ratio middle infrared continuous zoom optical system
文献类型：会议论文
| 作者 | YangHongtao ; FanZheyuan
|
| 出版日期 | 2011 |
| 会议名称 | international symposium on photoelectronic detection and imaging 2011: advances in infrared imaging and applications |
| 会议日期 | may 24, 2011 - may 24, 2011 |
| 会议地点 | beijing, china |
| 关键词 | continuous zoom secondary imaging cold shield efficiency cam curves |
| 页码 | 81931r |
| 通讯作者 | fan zheyuan |
| 英文摘要 | 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. |
| 收录类别 | EI ; CPCI |
| 产权排序 | 1 |
| 会议主办者 | chinese society of astronautics (cas) |
| 会议录 | proceedings of spie - the international society for optical engineering
 |
| 会议录出版者 | spie |
| 会议录出版地 | p.o. box 10, bellingham, wa 98227-0044, united states |
| 语种 | 英语 |
| ISSN号 | 0277-786x |
| 源URL | [http://ir.opt.ac.cn/handle/181661/19983]  |
| 专题 | 西安光学精密机械研究所_动态光学成像研究室 |
| 推荐引用方式 GB/T 7714 | YangHongtao,FanZheyuan. Design of high ratio middle infrared continuous zoom optical system[C]. 见:international symposium on photoelectronic detection and imaging 2011: advances in infrared imaging and applications. beijing, china. may 24, 2011 - may 24, 2011. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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