Analysis of focusing accuracy for multispectral CCD camera based on satellite

Shiliang Lv; Jinguo Liu

doi:10.1117/12.2207291

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8 October 2015 Analysis of focusing accuracy for multispectral CCD camera based on satellite

Shiliang Lv, Jinguo Liu

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Proceedings Volume 9677, AOPC 2015: Optical Test, Measurement, and Equipment; 96772S (2015) https://doi.org/10.1117/12.2207291
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

As a key technology to improve the imaging quality of remote multispectral CCD camera, the performance of a focusing system for multispectral CCD camera was presented in detail in this paper. Firstly, the focusing precision required was calculated in the optical system. The method of direct adjusting multispectral CCD focal plane was proposed, which was suitable for this multispectral CCD camera optical system. Secondly, we developed a focusing system which has the advantages of lower constructional complexity, easier hardware implementation and high focusing sensitivity. Finally, experimental test was constructed to evaluate the focusing precision performance of the focusing system. The result of focusing precision test is 3.62μm(3σ) in a focusing range of ±2.5mm. The experimental result shows that the focusing system we proposed is reasonable, and reliability as well as stable, which meet the focusing precision requirements for multispectral CCD camera.

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Shiliang Lv and Jinguo Liu "Analysis of focusing accuracy for multispectral CCD camera based on satellite", Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96772S (8 October 2015); https://doi.org/10.1117/12.2207291

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