Experimental study on imaging spectrometer focusing formula in orbit

Hong-tao Ma; Hui Jin

doi:10.1117/12.2182752

9 March 2015 Experimental study on imaging spectrometer focusing formula in orbit

Hong-tao Ma, Hui Jin

Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944657 (2015) https://doi.org/10.1117/12.2182752
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

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.

Citation Download Citation

Hong-tao Ma and Hui Jin "Experimental study on imaging spectrometer focusing formula in orbit", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944657 (9 March 2015); https://doi.org/10.1117/12.2182752

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