Design of large aperture focal plane shutter

Jia-wen Hu; Wen-li Ma; Jin-long Huang

doi:10.1117/12.971475

15 October 2012 Design of large aperture focal plane shutter

Jia-wen Hu, Wen-li Ma, Jin-long Huang

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 84150M (2012) https://doi.org/10.1117/12.971475
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

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.

Citation Download Citation

Jia-wen Hu, Wen-li Ma, and Jin-long Huang "Design of large aperture focal plane shutter", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150M (15 October 2012); https://doi.org/10.1117/12.971475

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