Lensless imaging through multiple phase patterns illumination
نویسندگان
چکیده
منابع مشابه
Lensless coherent imaging by phase retrieval with an illumination pattern constraint.
It is often possible to reduce the requirements on an imaging system by placing greater demands either on an illumination system or on post-detection processing of the data collected by the system. An extreme example of this is a system with no receiver optics whatsoever. By illuminating an object or scene with coherent light having a shaped illumination pattern, the receiver can be a simple de...
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One can decrease the complexity of imaging optics by increasing the demands on the illumination system or on post-detection computations. A lens-less coherent imaging system employing a shaped illumination pattern and phase retrieval is described. 2005 Optical Society of America OCIS codes: (110.0110) Imaging systems; (100.5070) Phase retrieval; (100.0100) Image processing; (100.3010) Image re...
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1Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 2Institute for Medical Engineering Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 3Singapore-MIT Alliance for Research and Technology (SMART) Centre, One Create Way, Singapore 117543, Singapore *Corresponding author: sinhayan@mi...
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We performed near-diffraction limited two-photon fluorescence (TPF) imaging through a lensless, multicore-fiber (MCF) endoscope utilizing digital phase conjugation. The phase conjugation technique is compatible with commercially available MCFs with high core density. We demonstrate focusing of ultrashort pulses through an MCF and show that the method allows for resolution that is not limited by...
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A method which is useful for obtaining superresolved imaging in a digital lensless Fourier holographic configuration is presented. By placing a diffraction grating between the input object and the CCD recording device, additional high-order spatial-frequency content of the object spectrum is directed towards the CCD. Unlike other similar methods, the recovery of the different band pass images i...
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ژورنال
عنوان ژورنال: Journal of Biomedical Optics
سال: 2017
ISSN: 1083-3668
DOI: 10.1117/1.jbo.22.11.110502