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Proceedings Paper

Modulating transfer function used for fiber endoscope testing
Author(s): Meirong Lin; Fang Fang; Yu Guo; Yue Zhang; Xianghong Zhong; Baozheng Zhang
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Paper Abstract

The modulation transfer function (MTF) has been used to evaluate the image quality of the optical system. There are no papers discussing the MTF of the endoscope system. This paper discusses the image quality of the fiber endoscope system by MTF. We found that the defocus error and the discrete pixel structure of the image fiber bundle are the two main factors of influencing the system resolution. The theoretical MTF values of the fiber endoscope system at the different working distances were calculated. The highest spatial frequencies that can be distinguished by the system at the different working distances were gotten through the MTF. The theoretical results were compared with the system resolutions that were measured experimentally. We found that the agreement between theory and experiment was excellent. Finally, we suggest that the system resolutions are determined by different factors in different cases.

Paper Details

Date Published: 20 September 2002
PDF: 9 pages
Proc. SPIE 4927, Optical Design and Testing, (20 September 2002); doi: 10.1117/12.471662
Show Author Affiliations
Meirong Lin, Nankai Univ. (China)
Fang Fang, Nankai Univ. (China)
Yu Guo, Nankai Univ. (China)
Yue Zhang, Nankai Univ. (China)
Xianghong Zhong, Nankai Univ. (China)
Baozheng Zhang, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 4927:
Optical Design and Testing
Zhicheng Weng; Jose M. Sasian; Yongtian Wang, Editor(s)

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