Design and verification of a robust secondary mirror adjustable supporting mechanism for airborne optical remote sensing instruments

Po-Hsuan Huang; Yu-Cheng Cheng; Shenq-Tsong Chang

doi:10.1117/12.893202

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24 September 2011 Design and verification of a robust secondary mirror adjustable supporting mechanism for airborne optical remote sensing instruments

Po-Hsuan Huang, Yu-Cheng Cheng, Shenq-Tsong Chang

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Proceedings Volume 8125, Optomechanics 2011: Innovations and Solutions; 812511 (2011) https://doi.org/10.1117/12.893202
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

This work presents a developing design of adjustable supporting mechanism of secondary mirror for airborne Cassegrain optical remote sensing instruments. Several datum surfaces and shims have been designed in this mechanism, shims and one of structural parts can be released and are properly grinded to the desired thickness. The proposed mechanism has been verified by an experimental model. The reassembled accuracy is 5 arcsecond and ±3 μm for orientation and position respectively. Furthermore, their adjustable accuracy can achieve 5 arcsecond and ±3 μm respectively, depending on grinding and measurement precision. The accuracy can drive the optical system performance to design specification. After verification, we confirm the proposed design of adjustable supporting mechanism can be applied to airborne Cassegrain optical systems, and has good potential in spaceborne applications.

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Po-Hsuan Huang, Yu-Cheng Cheng, and Shenq-Tsong Chang "Design and verification of a robust secondary mirror adjustable supporting mechanism for airborne optical remote sensing instruments", Proc. SPIE 8125, Optomechanics 2011: Innovations and Solutions, 812511 (24 September 2011); https://doi.org/10.1117/12.893202

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