Lensless Imaging and Sensing

High-resolution optical microscopy has traditionally relied on high-magnification and high-numerical aperture objective lenses. In contrast, lensless microscopy can provide high-resolution images without the use of any focusing lenses, offering the advantages of a large field of view, high resolutio...

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Published inAnnual review of biomedical engineering Vol. 18; p. 77
Main Authors Ozcan, Aydogan, McLeod, Euan
Format Journal Article
LanguageEnglish
Published United States 11.07.2016
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Abstract High-resolution optical microscopy has traditionally relied on high-magnification and high-numerical aperture objective lenses. In contrast, lensless microscopy can provide high-resolution images without the use of any focusing lenses, offering the advantages of a large field of view, high resolution, cost-effectiveness, portability, and depth-resolved three-dimensional (3D) imaging. Here we review various approaches to lensless imaging, as well as its applications in biosensing, diagnostics, and cytometry. These approaches include shadow imaging, fluorescence, holography, superresolution 3D imaging, iterative phase recovery, and color imaging. These approaches share a reliance on computational techniques, which are typically necessary to reconstruct meaningful images from the raw data captured by digital image sensors. When these approaches are combined with physical innovations in sample preparation and fabrication, lensless imaging can be used to image and sense cells, viruses, nanoparticles, and biomolecules. We conclude by discussing several ways in which lensless imaging and sensing might develop in the near future.
AbstractList High-resolution optical microscopy has traditionally relied on high-magnification and high-numerical aperture objective lenses. In contrast, lensless microscopy can provide high-resolution images without the use of any focusing lenses, offering the advantages of a large field of view, high resolution, cost-effectiveness, portability, and depth-resolved three-dimensional (3D) imaging. Here we review various approaches to lensless imaging, as well as its applications in biosensing, diagnostics, and cytometry. These approaches include shadow imaging, fluorescence, holography, superresolution 3D imaging, iterative phase recovery, and color imaging. These approaches share a reliance on computational techniques, which are typically necessary to reconstruct meaningful images from the raw data captured by digital image sensors. When these approaches are combined with physical innovations in sample preparation and fabrication, lensless imaging can be used to image and sense cells, viruses, nanoparticles, and biomolecules. We conclude by discussing several ways in which lensless imaging and sensing might develop in the near future.
Author Ozcan, Aydogan
McLeod, Euan
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  givenname: Aydogan
  surname: Ozcan
  fullname: Ozcan, Aydogan
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  organization: California NanoSystems Institute, University of California, Los Angeles, California 90095; email: ozcan@ucla.edu
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  givenname: Euan
  surname: McLeod
  fullname: McLeod, Euan
  email: euanmc@optics.arizona.edu
  organization: College of Optical Sciences, University of Arizona, Tucson, Arizona 85721; email: euanmc@optics.arizona.edu
BackLink https://www.ncbi.nlm.nih.gov/pubmed/27420569$$D View this record in MEDLINE/PubMed
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Keywords holography
lab-on-chip
microscopy
3D imaging
phase recovery
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Snippet High-resolution optical microscopy has traditionally relied on high-magnification and high-numerical aperture objective lenses. In contrast, lensless...
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StartPage 77
SubjectTerms Colorimetry - instrumentation
Equipment Design
Holography - instrumentation
Image Enhancement - instrumentation
Lenses
Microscopy - instrumentation
Optical Imaging - instrumentation
Signal Processing, Computer-Assisted - instrumentation
Title Lensless Imaging and Sensing
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