Optical System Design of Space Camera with Large F number and Long Focal Length

Xuyang, 李旭阳 Li; Yingcai, 李英才 Li; Zhen, 马臻 Ma; Hongwei, 易红伟 Yi; Guangjun, 冯广军 Feng

doi:10.3788/aos20103007.2093

Cited by 3 publications

(2 citation statements)

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“…Sketch maps of (a) imaging on continuously scanning and (b) imaging on step scanning and staring [8,[10][11] 。图 5 光学系统布局…”

Section: -mentioning

confidence: 99%

Key Technique of Photoelectric Reconnaissance System for Stratospheric Airship

Fudong¹,

Zhe²,

Feng³

et al. 2014

激光与光电子学进展

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Stratospheric airship works in stratosphere about 20 km above ground. It can cruise or belocated in the air, and has become a good platform for reconnaissance, surveillance or track. Photoelectric system is an important equipment on the stratospheric airship. The advantage of remote sensing on stratospheric platform is introduced, especially on detectable distance. The components and principle are introduced according to the typical existing photoelectric systems. Furthermore, the key technique of photoelectric system for stratospheric airship is analyzed, and the design method is explained. This paper can be referenced for the design of such systems in the future.

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“…Sketch maps of (a) imaging on continuously scanning and (b) imaging on step scanning and staring [8,[10][11] 。图 5 光学系统布局…”

Section: -mentioning

confidence: 99%

Key Technique of Photoelectric Reconnaissance System for Stratospheric Airship

Fudong¹,

Zhe²,

Feng³

et al. 2014

激光与光电子学进展

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“…性，在工程上使用并不普遍。将图像检测法引入桥梁检测领域是近年来的重点研究方向 [7][8] ，常用的有近距离采集图像法和远程视频检测两种方法。近距离检测需要将摄像头通过工程车或爬升机器人带到拉索表面进行图像采集 [5] ，检测速度较慢，效率低，且牵引机的轮子会损伤拉索表面。远程视频检测需要有高分辨率的摄远物镜来获取拉索表面裂纹图像，目前只有法国司态结构监测公司的 Scansites 远程检测系统在实际工程中使用(http://www.sites-china.com.cn)，但是成本较高。近年来国内对于摄远成像光学系统的设计研究比较多，但主要偏向于航空航天领域中反射式或红外光学系统的研究 [9][10][11][12][13]…”

Section: -unclassified

Optical System Design of High Definition Video Telephoto Objective and Its Imaging Experiment

Xingyu¹,

Daoyin²,

Yue³

et al. 2014

激光与光电子学进展

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In order to satisfy the remote detection requirements for the surface defects on the cables of cable stayed bridges, an opto-mechanical system of a high definition video telephoto objective is designed and manufactured. According to the objective definition requirement of 4 mm at the distance of 300 m, the imaging definition of 234 cycle/mm with a focal length of 320 mm is determined. A proper initial configuration is chosen, and then some optimization procedures are carried out with the optics design program OSLO, including the focus zooming, glass exchanging, lens reduction, etc. Finally an optical configuration of the telephoto objective is obtained with the relative aperture of 1/5.7, the field angle of 2 ω =1.379°, and the definition of 250 cycle/mm. The opto-mechanical structures are designed rationally and the experimental objective is manufactured. The definition testifies that its actual objective definition reaches 4 mm at the distance of 300 m. The site imaging experiment results at the location of a cable stayed bridge show that this system satisfies the remote detection requirements for the surface defects on the real engineering structures.

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