SIA OpenIR  > 光电信息技术研究室
Calculating model for equivalent thermal defocus amount in infrared imaging system
Zhang CS(张程硕); Shi ZL(史泽林); Xu BS(徐保树); Feng B(冯斌)
Department光电信息技术研究室
Source PublicationInfrared Physics and Technology
ISSN1350-4495
2016
Volume74Pages:72-80
Indexed BySCI ; EI
EI Accession number20160301810257
WOS IDWOS:000370091600010
Contribution Rank1
Funding OrganizationKey Laboratory of Opto-Electronic Information Processing Foundation of Chinese Academy of Sciences (Grant No. CXJJ-15S110).
KeywordInfrared Imaging System Thermal Effect Wave Aberration Defocus Athermalization
AbstractThe main effect of temperature change on infrared imaging system is the focus shift of infrared lenses. This paper analyzes the equivalent influence on imaging between the temperature change and the defocus at room temperature. In order to quantify the equivalence, we define an equivalent thermal defocus amount (ETDA). The ETDA describes the distance of the photosensitive surface shifting at room temperature, which has the same effect on imaging as the temperature changes. To model the ETDA, the expression of the focal shift as a function of temperature is obtained by solving partial differential equations for the thermal effect on light path firstly with some approximations. Then point spread functions of the thermal effect and defocus at room temperature are modeled based on wave aberration. The calculating model of ETDA is finally established by making their PSFs equal under the condition that the cutoff frequency of infrared imaging systems is much smaller than that of infrared lens. The experimental results indicate that defocus of ETDA at room temperature has the same influence on imaging as the thermal effect. Prospectively, experiments at high/low temperature can be replaced by experiments at room temperature with ETDA.
Language英语
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectInstruments & Instrumentation ; Optics ; Physics, Applied
WOS KeywordATHERMALIZATION
WOS Research AreaInstruments & Instrumentation ; Optics ; Physics
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/17608
Collection光电信息技术研究室
Corresponding AuthorZhang CS(张程硕)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, Liaoning, China
2.University of Chinese Academy of Sciences, Beijing, China
3.Key Laboratory of Opto-electronic Information Processing, Chinese Academy of Sciences, Shenyang, Liaoning, China
Recommended Citation
GB/T 7714
Zhang CS,Shi ZL,Xu BS,et al. Calculating model for equivalent thermal defocus amount in infrared imaging system[J]. Infrared Physics and Technology,2016,74:72-80.
APA Zhang CS,Shi ZL,Xu BS,&Feng B.(2016).Calculating model for equivalent thermal defocus amount in infrared imaging system.Infrared Physics and Technology,74,72-80.
MLA Zhang CS,et al."Calculating model for equivalent thermal defocus amount in infrared imaging system".Infrared Physics and Technology 74(2016):72-80.
Files in This Item: Download All
File Name/Size DocType Version Access License
Calculating model fo(3558KB)期刊论文作者接受稿开放获取ODC PDDLView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang CS(张程硕)]'s Articles
[Shi ZL(史泽林)]'s Articles
[Xu BS(徐保树)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang CS(张程硕)]'s Articles
[Shi ZL(史泽林)]'s Articles
[Xu BS(徐保树)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang CS(张程硕)]'s Articles
[Shi ZL(史泽林)]'s Articles
[Xu BS(徐保树)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Calculating model for equivalent thermal defocus amount in infrared imaging system.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.