Photonics Scanning Pentaprism System for the Integrated Inspection of Large-Aperture Telescopes

doi:10.3390/s23156650

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	Photonics Scanning Pentaprism System for the Integrated Inspection of Large-Aperture Telescopes
	Q. An, H. Zhang, K. Wang, X. Liu and H. Li
	2023
发表期刊	Sensors
ISSN	14248220
卷号	23 期号:15
摘要	To improve their spatial resolution and detection capabilities, future ground-based optical telescopes will have a size of 30 m, and the aperture of space telescopes will be increased to 10 m. Such large optical systems necessitate the development of large integrated testing equipment. In this study, spectrum and system alignment measurements and wavefront quality checking were performed using the sub-aperture detection method and a fiber-connected Photonics Scanning Pentaprism (PSP). First, the system was aligned using an optical truss, ensuring that the optical axis was properly positioned. Second, using a sub-aperture light beam though the entrance pupil, light spots were formed on the focal plane and transmitted to the spectrometer via fibers to obtain the corresponding spectral components. Then, by taking measurements at different system positions, a full-aperture spectrum response could be reached. Lastly, by photon-integrated interference on the focal plane, intensity interference fringes could be projected at the entrance pupil of the system. And the wavefront quality of the system could be verified by observing the fringe deformation. The measurement accuracy of the optical axis of the system is better than 2 mrad. The spectral measurement accuracy was better than 5%, and the wavefront measurement accuracy surpassed 0.1 wavelengths (1 wavelength = 633 nm). This study effectively enhanced the detection and in situ calibration capabilities of large telescope systems, ensuring that the performance requirements can be met in the design of future telescopes. © 2023 by the authors.
DOI	10.3390/s23156650
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收录类别	sci ; ei
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67319
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. An, H. Zhang, K. Wang, X. Liu and H. Li. Photonics Scanning Pentaprism System for the Integrated Inspection of Large-Aperture Telescopes[J]. Sensors,2023,23(15).
APA	Q. An, H. Zhang, K. Wang, X. Liu and H. Li.(2023).Photonics Scanning Pentaprism System for the Integrated Inspection of Large-Aperture Telescopes.Sensors,23(15).
MLA	Q. An, H. Zhang, K. Wang, X. Liu and H. Li."Photonics Scanning Pentaprism System for the Integrated Inspection of Large-Aperture Telescopes".Sensors 23.15(2023).

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