Embedded pupil function recovery for fourier ptychographic imaging devices
First Claim
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1. A Fourier ptychographic imaging system employing embedded pupil function recovery, comprising:
- a variable illuminator configured to illuminate a sample at a plurality of oblique illumination incidence angles;
an objective lens configured to filter light issuing from the sample based on its numerical aperture;
a radiation detector configured to receive light filtered by the objective lens and capture a plurality of intensity images corresponding to the plurality of oblique illumination incidence angles; and
a processor configured to iteratively and simultaneously update a pupil function and a separate sample spectrum, wherein the sample spectrum is updated iteratively for each illumination incidence angle at overlapping regions in the Fourier domain with Fourier transformed intensity image data, wherein the overlapping regions correspond to the plurality of illumination incidence angles and the numerical aperture of the objective lens.
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Abstract
Certain aspects pertain to Fourier ptychographic imaging systems, devices, and methods that implement an embedded pupil function recovery.
108 Citations
19 Claims
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1. A Fourier ptychographic imaging system employing embedded pupil function recovery, comprising:
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a variable illuminator configured to illuminate a sample at a plurality of oblique illumination incidence angles; an objective lens configured to filter light issuing from the sample based on its numerical aperture; a radiation detector configured to receive light filtered by the objective lens and capture a plurality of intensity images corresponding to the plurality of oblique illumination incidence angles; and a processor configured to iteratively and simultaneously update a pupil function and a separate sample spectrum, wherein the sample spectrum is updated iteratively for each illumination incidence angle at overlapping regions in the Fourier domain with Fourier transformed intensity image data, wherein the overlapping regions correspond to the plurality of illumination incidence angles and the numerical aperture of the objective lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of Fourier ptychographic imaging employing embedded pupil function recovery, the method comprising:
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illuminating a sample from a plurality of incidence angles using a variable illuminator; filtering light issuing from the sample using an optical element; capturing a plurality of variably-illuminated intensity image distributions of the sample using a radiation detector; simultaneously updating a pupil function and a separate sample spectrum, wherein the sample spectrum is updated in overlapping regions with Fourier transformed variably-illuminated intensity images measurements, wherein the overlapping regions corresponds to the plurality of incidence angles and the numerical aperture of the lens; and inverse Fourier transforming the recovered sample spectrum to recover an image having a higher resolution than the intensity images. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification