Influence of Focal Shift on Image Quality

Yu Fa Zhang; Xiao Quan Sun

doi:10.4028/www.scientific.net/AMM.602-605.3485

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 602-605Influence of Focal Shift on Image Quality

Influence of Focal Shift on Image Quality

Abstract:

Optical detectors consist of optical lenses and sensors, which lead to great influence on image quality. The modulation transfer function (MTF) was selected as the image performance index. The influence of focal shift on MTF in optical system was studied and image quality was simulated in this article. The results show that when the focal shift quantity increases, the MTF of detector decreases accordingly, and the high-frequency messages lost gradually. The conclusion is useful for design evaluate optical imaging system.

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Periodical:

Applied Mechanics and Materials (Volumes 602-605)

Pages:

3485-3488

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.602-605.3485

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Online since:

August 2014

Authors:

Yu Fa Zhang*, Xiao Quan Sun

Keywords:

Focal Shift, Image Quality, Modulation Transfer Function

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* - Corresponding Author

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