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Proceedings Paper

Experimental study on imaging spectrometer focusing formula in orbit
Author(s): Hong-tao Ma; Hui Jin
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Paper Abstract

Experimental verification for a focusing mechanism of imaging spectrometer is studied. The mechanism uses stepper motor driven precision harmonic drive. Wave generator is composed of elliptical cam and a flexible bearing. The output end is connected with the ball screw rotary motion into linear motion, which drives the focusing lens linear guide reciprocating motion. In view of the practical application of the mechanism in the imaging spectrometer, the thermal optical experimental imaging spectrometer has been focusing the formula. Data show that the focus formula ensures linear relationship between the focal plane position and temperature. The linear relationship shows that the imaging spectrometer onboard the variation with temperature and automatic focusing is very important.

Paper Details

Date Published: 9 March 2015
PDF: 5 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944657 (9 March 2015); doi: 10.1117/12.2182752
Show Author Affiliations
Hong-tao Ma, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Hui Jin, Changchun Institute of Optics,Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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