Optimized sinusoidal phase mask to extend the depth of field of an incoherent imaging system

2010 ◽  
Vol 35 (2) ◽  
pp. 267 ◽  
Author(s):  
Hui Zhao ◽  
Yingcai Li
Keyword(s):  
Imaging System ◽  
Phase Mask ◽  
Depth Of Field ◽  
Incoherent Imaging

Cubic sinusoidal phase mask: Another choice to extend the depth of field of incoherent imaging system

2010 ◽  
Vol 42 (4) ◽  
pp. 561-569 ◽  
Author(s):  
Hui Zhao ◽  
Yingcai Li ◽  
Huajun Feng ◽  
Zhihai Xu ◽  
Qi Li
Keyword(s):  
Imaging System ◽  
Phase Mask ◽  
Depth Of Field ◽  
Incoherent 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

Optimized non-integer order phase mask to extend the depth of field of an imaging system

2016 ◽  
Vol 374 ◽  
pp. 92-96 ◽  
Author(s):  
Jiang Liu ◽  
Erlong Miao ◽  
Yongxin Sui ◽  
Huaijiang Yang
Keyword(s):  
Imaging System ◽  
Phase Mask ◽  
Depth Of Field ◽  
Integer Order

scholarly journals Investigation of extended depth-of-field f/8 camera with optimized cubic phase mask and digital restoration

2020 ◽  
Vol 238 ◽  
pp. 03008
Author(s):  
Po-Sheng Chiu ◽  
Kurt Vonmetz ◽  
Federico Canini ◽  
H. Paul Urbach
Keyword(s):  
Mean Squared Error ◽  
Imaging System ◽  
Optimal Solution ◽  
Phase Mask ◽  
Depth Of Field ◽  
Cubic Phase ◽  
Modulation Transfer ◽  
Original Design ◽  
Digital Restoration ◽  
Extended Depth Of Field

An investigation of extended depth-of-field camera with optimized phase mask and digital restoration is presented. The goal of this paper is to implement the wavefront coding technique without affecting much of the original design, and the design has taken the complexity of imaging system into consideration. The optimized strength of cubic phase mask (CPM) is based on the analytical optimal solution for the task-based imaging system [J. Opt. Soc. Am. A 25, 1064 (2008)]. The noisy intermediate images of CPM system with highest spatial frequency of interest can be effectively restored by vector-based Richardson-Lucy algorithm. Restoration from the system with generalized CPM produces precise image position than the system with CPM does. In general, the CPM system procures modulation transfer function higher than 0.195 in the whole depth-of-field, and the mean squared error of the restored images are less than 5 %.

Phase mask coded with the superposition of four Zernike polynomials for extending the depth of field in an imaging system

2014 ◽  
Vol 53 (18) ◽  
pp. 4033 ◽  
Author(s):  
Omar Palillero-Sandoval ◽  
J. Félix Aguilar ◽  
L. R. Berriel-Valdos
Keyword(s):  
Imaging System ◽  
Phase Mask ◽  
Depth Of Field ◽  
Zernike Polynomials

Inverse sinusoidal phase mask to extend the depth of field of incoherent imaging systems

Optik ◽  
2016 ◽  
Vol 127 (20) ◽  
pp. 9105-9110 ◽  
Author(s):  
Liang Zhou ◽  
Zhaohui Liu ◽  
Wenji She ◽  
Qiusha Shan
Keyword(s):  
Imaging Systems ◽  
Phase Mask ◽  
Depth Of Field ◽  
Incoherent Imaging
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