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Stray light characteristics of the diffractive telescope system
Liu, Dun1,2; Wang, Lihua1; Yang, Wei1; Wu, Shibin1; Fan, Bin1; Wu, Fan1
Source PublicationOptical Engineering
Volume57Issue:2Pages:025105
2018-02-01
Language英语
ISSN0091-3286
DOI10.1117/1.OE.57.2.025105
Indexed ByEi
EI Accession Number20181004882287
SubtypeJ
AbstractDiffractive telescope technology is an innovation solution in construction of large light-weight space telescope. However, the nondesign orders of diffractive optical elements (DOEs) may affect the imaging performance as stray light. To study the stray light characteristics of a diffractive telescope, a prototype was developed and its stray light analysis model was established. The stray light characteristics including ghost, point source transmittance, and veiling glare index (VGI) were analyzed. During the star imaging test of the prototype, the ghost images appeared around the star image as the exposure time of the charge-coupled device improving, consistent with the simulation results. The test result of VGI was 67.11%, slightly higher than the calculated value 57.88%. The study shows that the same order diffraction of the diffractive primary lens and correcting DOE is the main factor that causes ghost images. The stray light sources outside the field of view can illuminate the image plane through nondesign orders diffraction of the primary lens and contributes to more than 90% of the stray light flux on the image plane. In summary, it is expected that these works will provide some guidance for optimizing the imaging performance of diffractive telescopes. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
KeywordCharge coupled devices Density (optical) Diffraction Diffractive optical elements Glare Image enhancement Light sources Optical systems Space telescopes Stars
EI KeywordsCharge coupled devices ; Density (optical) ; Diffraction ; Diffractive optical elements ; Glare ; Image enhancement ; Light sources ; Optical systems ; Space telescopes ; Stars
EI Classification Number657.2 Extraterrestrial Physics and Stellar Phenomena ; 714.2 Semiconductor Devices and Integrated Circuits ; 741.1 Light/Optics ; 741.3 Optical Devices and Systems
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9321
Collection质量处(质检中心)
Affiliation1.Chinese Academy of Sciences, Institute of Optics and Electronics, Chengdu, China;
2.University of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Liu, Dun,Wang, Lihua,Yang, Wei,et al. Stray light characteristics of the diffractive telescope system[J]. Optical Engineering,2018,57(2):025105.
APA Liu, Dun,Wang, Lihua,Yang, Wei,Wu, Shibin,Fan, Bin,&Wu, Fan.(2018).Stray light characteristics of the diffractive telescope system.Optical Engineering,57(2),025105.
MLA Liu, Dun,et al."Stray light characteristics of the diffractive telescope system".Optical Engineering 57.2(2018):025105.
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