scholarly journals Design and demonstration of a far-field imaging system with a one-dimensional form factor

2016 ◽  
Vol 24 (20) ◽  
pp. 22899
Author(s):  
Jordan B. Burch ◽  
James R. Leger
Keyword(s):  
Form Factor ◽  
Imaging System ◽  
Far Field ◽  
One Dimensional ◽  
Field Imaging

Ultra-Wide Band Near-Field Imaging System

2007 ◽  
Author(s):  
Anatoliy O. Boryssenko ◽  
Christophe Craeye ◽  
Daniel H. Schaubert
Keyword(s):  
Imaging System ◽  
Near Field ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Near Field Imaging ◽  
Field Imaging

scholarly journals Imaging with Local Speckle Intensity Correlations: Theory and Practice

2021 ◽  
Vol 40 (3) ◽  
pp. 1-22
Author(s):  
Marina Alterman ◽  
Chen Bar ◽  
Ioannis Gkioulekas ◽  
Anat Levin
Keyword(s):  
Near Field ◽  
Biological Tissues ◽  
Computational Imaging ◽  
Theory And Practice ◽  
Fluorescent Imaging ◽  
Light Sources ◽  
Far Field ◽  
Scattering Layer ◽  
Speckle Patterns ◽  
Field Imaging

Recent advances in computational imaging have significantly expanded our ability to image through scattering layers such as biological tissues by exploiting the auto-correlation properties of captured speckle intensity patterns. However, most experimental demonstrations of this capability focus on the far-field imaging setting, where obscured light sources are very far from the scattering layer. By contrast, medical imaging applications such as fluorescent imaging operate in the near-field imaging setting, where sources are inside the scattering layer. We provide a theoretical and experimental study of the similarities and differences between the two settings, highlighting the increased challenges posed by the near-field setting. We then draw insights from this analysis to develop a new algorithm for imaging through scattering that is tailored to the near-field setting by taking advantage of unique properties of speckle patterns formed under this setting, such as their local support. We present a theoretical analysis of the advantages of our algorithm and perform real experiments in both far-field and near-field configurations, showing an order-of magnitude expansion in both the range and the density of the obscured patterns that can be recovered.

Superresolution in far-field imaging

2002 ◽  
Vol 19 (3) ◽  
pp. 436 ◽  
Author(s):  
I. Leizerson ◽  
S. G. Lipson ◽  
V. Sarafis
Keyword(s):  
Far Field ◽  
Field Imaging

An extended depth-of-field imaging system with a non-rotationally symmetric phase mask

2018 ◽  
Vol 89 (10) ◽  
pp. 103101 ◽  
Author(s):  
Hongbo Xie ◽  
Lirong He ◽  
Lei Yang ◽  
Chensheng Mao ◽  
Meng Zhu ◽  
...  
Keyword(s):  
Imaging System ◽  
Phase Mask ◽  
Depth Of Field ◽  
Rotationally Symmetric ◽  
Extended Depth Of Field ◽  
Field Imaging ◽  
Symmetric Phase

Alleviating image artifacts in wavefront coding extended depth of field imaging system

2019 ◽  
Vol 436 ◽  
pp. 232-238
Author(s):  
Xutao Mo ◽  
Tao Zhang ◽  
Bin Wang ◽  
Xianshan Huang ◽  
Cuifang Kuang ◽  
...  
Keyword(s):  
Imaging System ◽  
Depth Of Field ◽  
Image Artifacts ◽  
Wavefront Coding ◽  
Extended Depth Of Field ◽  
Field Imaging

scholarly journals Far-field imaging device: planar hyperlens with magnification using multi-layer metamaterial

2008 ◽  
Vol 16 (25) ◽  
pp. 21142 ◽  
Author(s):  
Wei Wang ◽  
Hui Xing ◽  
Liang Fang ◽  
Yao Liu ◽  
Junxian Ma ◽  
...  
Keyword(s):  
Far Field ◽  
Imaging Device ◽  
Field Imaging

scholarly journals Simultaneous near-field and far-field imaging of the11.9‐nmNi-likeSnsoft-x-ray laser

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
F. Staub ◽  
M. Braud ◽  
J. E. Balmer ◽  
J. Nilsen ◽  
S. Bajt
Keyword(s):  
Near Field ◽  
Far Field ◽  
X Ray ◽  
Field Imaging
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