Extending the depth-of-field of incoherent imaging system through wave-front coding by using composite phase masks

2011 ◽  
Author(s):  
Hui Zhao ◽  
Hongwei Yi ◽  
Yingcai Li
Keyword(s):  
Wave Front ◽  
Imaging System ◽  
Depth Of Field ◽  
Incoherent Imaging

A Binary Phase only Pupil Masks for Extending the Depth of Field of a Microscopy

2013 ◽  
Vol 333-335 ◽  
pp. 1591-1596
Author(s):  
Xin Yi Wang ◽  
Zhong Bao Xu ◽  
Zou Shuang
Keyword(s):  
Transfer Function ◽  
Wave Front ◽  
Modulation Transfer Function ◽  
Imaging System ◽  
Depth Of Field ◽  
Modulation Transfer ◽  
Field Range ◽  
Microscopic Imaging ◽  
Annular Ring ◽  
Binary Phase

A binary phase only pupil mask with phase rings is placed on the plane of the aperture to modulate the wave front of the traditional microscopic imaging system, the modulation transfer function curves, obtained by the annular ring aperture applied to the pupil of the imaging system, do not change much within the required depth of field range, therefore, the loss of systems imaging information is avoided,meanwhile the depth of the field is enlarged. The Zemax simulated result shows that it is able to make the depth of field of microscopic imaging system extend 10 times to adopt this method.

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

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

Imaging

2019 ◽  
pp. 382-434
Author(s):  
B. D. Guenther
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Noise Intensity ◽  
Imaging System ◽  
Optical Transfer Function ◽  
Modulation Transfer ◽  
Optical Aperture ◽  
System Properties ◽  
Incoherent Imaging ◽  
Optical Transfer

Treating an imaging system as a linear system and use llinear system properties to d iscuss both coherent and incoherent imaging. Use a one dimensional pin hole camera to study the theory of incoherent imaging. Two different criteria, Rayleigh and Sparrow, are used to define the resolution limits of the camera. From the simple theory define the optical transfer function and the modulation transfer function as appropriate characterizations of complex imaging systems. A review of the human imaging system emphasizes tits idfferences with man made cameras. Coherent imaging is based on Abbe’s theory of microscopy. A simple 4f imaging system can be used to understand how spatial resolution is limited by the optical aperture and by controlling the aperture, we can enhance the edges of an image or remove noise intensity noise on a plane wave. Apodizing the aperture allows astronomers to locate planents orbiting distant stars.

Extension Ratio of the Depth of Field for Wavefront Coding Imaging System

2008 ◽  
Vol 28 (5) ◽  
pp. 870-875 ◽  
Author(s):  
潘超 Pan Chao ◽  
陈家璧 Chen Jiabi ◽  
张荣福 Zhang Rongfu ◽  
庄松林 Zhuang Songlin
Keyword(s):  
Imaging System ◽  
Depth Of Field ◽  
Extension Ratio ◽  
Wavefront Coding
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