Stigmatic singlet with a user-defined apodization pupil function

2021 ◽  
Author(s):  
Rafael Gonzalez Acuña
Keyword(s):  
Pupil Function

scholarly journals Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4011
Author(s):  
Chuanwei Yao ◽  
Yibing Shen
Keyword(s):  
Imaging System ◽  
Optical Design ◽  
Computational Imaging ◽  
Large Field ◽  
Wavefront Aberration ◽  
Imaging Method ◽  
Image Deconvolution ◽  
Pupil Function ◽  
Wavefront Coding ◽  
Blurred Images

The image deconvolution technique can recover potential sharp images from blurred images affected by aberrations. Obtaining the point spread function (PSF) of the imaging system accurately is a prerequisite for robust deconvolution. In this paper, a computational imaging method based on wavefront coding is proposed to reconstruct the wavefront aberration of a photographic system. Firstly, a group of images affected by local aberration is obtained by applying wavefront coding on the optical system’s spectral plane. Then, the PSF is recovered accurately by pupil function synthesis, and finally, the aberration-affected images are recovered by image deconvolution. After aberration correction, the image’s coefficient of variation and mean relative deviation are improved by 60% and 30%, respectively, and the image can reach the limit of resolution of the sensor, as proved by the resolution test board. Meanwhile, the method’s robust anti-noise capability is confirmed through simulation experiments. Through the conversion of the complexity of optical design to a post-processing algorithm, this method offers an economical and efficient strategy for obtaining high-resolution and high-quality images using a simple large-field lens.

scholarly journals Embedded pupil function recovery for Fourier ptychographic microscopy: erratum

2015 ◽  
Vol 23 (26) ◽  
pp. 33027 ◽  
Author(s):  
Xiaoze Ou ◽  
Guoan Zheng ◽  
Changhuei Yang
Keyword(s):  
Pupil Function ◽  
Function Recovery

scholarly journals Confocal surface plasmon microscopy with pupil function engineering

2012 ◽  
Vol 20 (7) ◽  
pp. 7388 ◽  
Author(s):  
Bei Zhang ◽  
Suejit Pechprasarn ◽  
Jing Zhang ◽  
Michael G. Somekh
Keyword(s):  
Surface Plasmon ◽  
Pupil Function ◽  
Surface Plasmon Microscopy

Influence of pupil function in pseudophakia

2019 ◽  
Author(s):  
Elsa S. Fonseca ◽  
Paulo T. Fiadeiro ◽  
Renato Gomes ◽  
Angel S. Trancon ◽  
António Baptista ◽  
...  
Keyword(s):  
Pupil Function

The interaction between pupil function and cardiovascular regulation in patients with acute schizophrenia

2008 ◽  
Vol 119 (10) ◽  
pp. 2209-2213 ◽  
Author(s):  
Karl-Jürgen Bär ◽  
Michael Karl Boettger ◽  
Steffen Schulz ◽  
Christina Harzendorf ◽  
Marcus Willy Agelink ◽  
...  
Keyword(s):  
Cardiovascular Regulation ◽  
Acute Schizophrenia ◽  
Pupil Function
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