Dual-wavelength Fourier ptychography using a single LED.
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DOI: 10.1364/ol.43.003526
Abstract: We propose dual-wavelength Fourier ptychography for topographic measurement. To extend the axial measurement range, a single light-emitting diode (LED) and two appropriate bandpass filters are employed. This provides a speckle-free phase image, and reduces the… read more here.
Keywords: fourier ptychography; dual wavelength; wavelength fourier;