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Proceedings Paper

Design of large aperture focal plane shutter
Author(s): Jia-wen Hu; Wen-li Ma; Jin-long Huang
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Paper Abstract

To satisfy the requirement of large telescope, a large aperture focal plane shutter with aperture size of φ200mm was researched and designed to realize, which could be started and stopped in a relative short time with precise position, and also the blades could open and close at the same time at any orientation. Timing-belts and stepper motors were adopted as the drive mechanism. Velocity and position of the stepper motors were controlled by the PWM pulse generated by DSP. Exponential curve is applied to control the velocity of the stepper motors to make the shutter start and stop in a short time. The closing/open time of shutter is 0.2s, which meets the performance requirements of large telescope properly.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150M (15 October 2012); doi: 10.1117/12.971475
Show Author Affiliations
Jia-wen Hu, Institute of Optics and Electronics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Wen-li Ma, Institute of Optics and Electronics (China)
Jin-long Huang, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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