Non-paraxial region adaptive aberration compensation using the phase transfer function

The optical transfer function is crucial for imaging system design and characterization. However, practical optical systems often deviate from linear spatial invariance due to aberrations and field-of-view considerations, posing challenges for optical transfer function characterization and aberratio...

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Bibliographic Details
Published in:Optics letters 2023-10, Vol.48 (19), p.4989-4992
Main Authors: Tang, Xinlan, Kong, Lingbao, Song, Huixin
Format: Article
Language:English
Subjects:
Aberration
Compensation
Imaging
Optical transfer function
Phase modulation
Systems design
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Summary:The optical transfer function is crucial for imaging system design and characterization. However, practical optical systems often deviate from linear spatial invariance due to aberrations and field-of-view considerations, posing challenges for optical transfer function characterization and aberration compensation in non-paraxial region imaging. Partitioning the field-of-view into isoplanatic regions and measuring the optical transfer function for each region is a potential solution, but practical implementation is hindered by the lack of field-of-view information. This Letter introduces a compensation method for the phase modulation function based on spatial frequency domain division, specifically tailored for scenarios where high imaging quality is not essential. The proposed method addresses the challenge by filling the phase transfer function in an annular form corresponding to aberrations in different isoplanatic regions, offers a valuable solution for adaptive aberration compensation in non-paraxial region imaging, and presents a practical illustration of its effectiveness.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.498999