Characteristics of Modulation Transfer Function of Pixel Coupling Between Array Fiber Image Bundles and Array CCD

Xu, 何煦 He; Li, 袁 理 Yuan; Chunqi, 靳淳琪 Jin; Xiaohui, 张晓辉 Zhang

doi:10.3788/aos201737.0506002

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“…Bing-Hua Su [13] conducted a study on the equivalent evaluation of the MTF for a fiber-optic panel image transmission system and confirmed that the image transmission process of a fiber-optic panel is an integral sampling process. He Xu of the Changchun Institute of Optics studied the MTF of linear fiber bundles [14] and established a one-dimensional coupled discrete sampling model for the MTF [15]. Most of the existing research on the coupled-MTF of fiber-optic imaging bundles is based on the one-dimensional arrangement of physical models, and He Xu studied the coupled-MTF characteristics between square-arranged fiber bundles and area array CCD [16].…”

Section: Introductionmentioning

confidence: 99%

Research on the Coupled Modulation Transfer Function of the Discrete Sampling System with Hexagonal Fiber-Optic Imaging Bundles

Han

et al. 2022

Applied Sciences

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In this study, we developed a numerical model of the coupled modulation transfer function (coupled-MTF) based on the discrete sampling system from the perspective of optical system imaging quality evaluation for coupled two-dimensional discrete sampling characteristics of the hexagonally aligned fiber-optic imaging bundles and CCD image elements. The results show that when the spatial frequency of the input target signal deviates from the Nyquist frequency by 1%, an increase in the number of fibers leads to a faster convergence of the oscillation of the coupled-MTF, and the coupled-MTF converges to a stable value when the number of fibers reaches 1000 × 1000. The deviation of the spatial frequency of the input target signal from the Nyquist frequency is within 1%, and the oscillatory convergence of the coupled-MTF accelerates with increasing deviation. The coupled-MTF oscillates with the deviation period of the wave peak of the input target signal from the initial position of the fiber center, and the theoretical oscillation spatial period is twice the fiber diameter. This study produces important guidelines for the selection of the number of fibers, input spatial frequency, and initial position deviation of the hexagonally arranged fiber imaging bundles.

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Section: Introductionmentioning

confidence: 99%

Research on the Coupled Modulation Transfer Function of the Discrete Sampling System with Hexagonal Fiber-Optic Imaging Bundles

Han

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

Characteristics of Modulation Transfer Function of Pixel Coupling Between Array Fiber Image Bundles and Array CCD

Cited by 1 publication

References 0 publications

Research on the Coupled Modulation Transfer Function of the Discrete Sampling System with Hexagonal Fiber-Optic Imaging Bundles

Research on the Coupled Modulation Transfer Function of the Discrete Sampling System with Hexagonal Fiber-Optic Imaging Bundles

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