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DOI: 10.17586/1023-5086-2023-90-06-80-91
Design of large aperture focal plane curtain shutter
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Publication in Journal of Optical Technology
Jiang Renkui, Liang Wei, Fan Yongkun , Zhang Fu, Zhang Yongchao. Design of large aperture focal plane curtain shutter (Проектирование широкоапертурного фокального шторного затвора) [на англ. языке] // Оптический журнал. 2023. Т. 90. № 6. С. 80–91. http://doi.org/10.17586/1023-5086-2023-90-06-80-91
Jiang Renkui, Liang Wei, Fan Yongkun, Zhang Fu, Zhang Yongchao. Design of large aperture focal plane curtain shutter (Проектирование широкоапертурного фокального шторного затвора) [in English] // Opticheskii Zhurnal. 2023. V. 90. № 6. P. 80–91. http://doi.org/10.17586/1023-5086-2023-90-06-80-91
Renkui Jiang, Wei Liang, Yongkun Fan, Fu Zhang, and Yongchao Zhang, "Design of a large aperture focal plane curtain shutter," Journal of Optical Technology. 90(6), 336-343 (2023)
Subject of study. A large aperture focal plane curtain shutter was designed, the aperture focal plane was up to 506 mm. Purpose of the work. According to the task requirements of the WideField Survey Telescope, the shutter should have the characteristics of large aperture focal plane, compact structure, fast response time, high exposure accuracy and uniformity. Method. The shutter used ball screws and rollers to drive and wind (or unwind) the curtain respectively, ensures that the curtain driving speed is similar to the winding (or unwinding) speed through the transmission system, and set a torsion spring to provide tension for the curtain and compensate for the slight difference between the driving speed and winding (or unwinding) speed. In order to select the best curtain material, six kinds of curtain materials were selected, and each material was evaluated by life, wrinkling and pollutants. Polyvinyl chloride fabric was selected as the shutter curtain material. Main results. Compared with the traditional rollerdriven curtain shutter, the shutter of the WideField Survey Telescope had higher exposure accuracy and uniformity; the curtain does not need to open, and the shutter exposure width can be larger and more reliable. The experimental results showed that the exposure accuracy of the shutter of the WideField Survey Telescope was 0.48%, and the exposure uniformity was 0.28%. Practical significance. It meets the technical requirements of the WideField Survey Telescope, and is also suitable for other large aperture groundbased telescopes.
astronomical telescope, The Wide-Field Survey Telescope, curtain shutter, exposure accuracy, exposure uniformity
OCIS codes: 110.0110, 220.0220
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