落射照明傅里叶叠层成像中的传递函数分析。
Transfer function analysis in epi-illumination Fourier ptychography.
作者信息
Pacheco Shaun, Salahieh Basel, Milster Tom, Rodriguez Jeffrey J, Liang Rongguang
出版信息
Opt Lett. 2015 Nov 15;40(22):5343-6. doi: 10.1364/OL.40.005343.
Abstract
This Letter explores Fourier ptychography (FP) using epi-illumination. The approach effectively modifies the FP transfer function to be coherent-like out to the incoherent limit of twice the numerical aperture over the wavelength 2NA/λ. Images reconstructed using this approach are shown to have higher contrast at finer details compared with images using incoherent illumination, indicating that the FP transfer function is superior in high spatial frequency regions.
摘要
本信函探讨了使用落射照明的傅里叶叠层成像术（FP）。该方法有效地将FP传递函数修改为在波长2NA/λ的两倍数值孔径的非相干极限范围内类似相干的函数。与使用非相干照明的图像相比，使用该方法重建的图像在更精细的细节上具有更高的对比度，这表明FP传递函数在高空间频率区域更具优势。
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