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Design of a long focal length mid-wavelength infrared optical system
Duan Jing1; Zhang Zhanpeng1; Liu Kai1; Shan Qiusha1; Jiang Kai1; Yan Peipei1,2; Duan, J (reprint author), Chinese Acad Sci, Xian Inst Opt & Precis Mech, Photoelect Track & Measurement Technol Res Dept, Xian 710119, Shaanxi, Peoples R China.
2018
Conference Name4th Seminar on Novel Optoelectronic Detection Technology and Application
Source PublicationFOURTH SEMINAR ON NOVEL OPTOELECTRONIC DETECTION TECHNOLOGY AND APPLICATION
Volume10697
Conference Date2017-10-24
Conference PlaceNanjing, PEOPLES R CHINA
Publication PlaceBELLINGHAM
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Contribution Rank1
Abstract

Based on a 640x512 cooled staring focal plane array(FPA) detector, pixel size 15 mu mx15 mu m, a long focal length mid-wavelength infrared optical system was designed. In this paper, the working wavelength is 3 mu m similar to 5 mu m, the temperature range is -30 degrees C similar to+50 degrees C, this system can realize 1000mm focal length, the F-number is 4, the full field of view is 0.70 degrees, satisfy 100% cold shield efficiency. A re-imaging refractive system was adopted in this designed optical system consists of a main objective group and a projection group. First of all, the structural selection and the initial parameter calculation were introduced. Secondly, on the basis of variety of the temperature, a focusing len was presented in this system to adjust to produce a clear image. Last but not the least, to improve image quality and environment adaptability, the analysis of temperature change and ghost image were described particularly. The design results prove that at the spatial frequency of 33 lp/mm, the axis MTF of the optical system is greater than 0.35, the system can offer a high resolution and excellent images, and it has the advantages of good adaptability, simple structure, easy to adjust, and high transmittance.

KeywordLong Focal Length Optical Design Infrared Technology Refractive Structure
Subject AreaEngineering, Electrical & Electronic
Department光电测量技术实验室
DOI10.1117/12.2314992
Indexed ByEI
ISBN978-1-5106-1948-7
Language英语
ISSN0277-786X
EI Accession Number20182805539968
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30385
Collection光电测量技术实验室
Corresponding AuthorDuan, J (reprint author), Chinese Acad Sci, Xian Inst Opt & Precis Mech, Photoelect Track & Measurement Technol Res Dept, Xian 710119, Shaanxi, Peoples R China.
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Photoelect Track & Measurement Technol Res Dept, Xian 710119, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Duan Jing,Zhang Zhanpeng,Liu Kai,et al. Design of a long focal length mid-wavelength infrared optical system[C]. BELLINGHAM:SPIE-INT SOC OPTICAL ENGINEERING,2018.
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