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4 - Spatial Coherent and Incoherent Optical Systems

Published online by Cambridge University Press:  22 December 2022

Yaping Zhang  and
Ting-Chung Poon
Yaping Zhang
Affiliation:
Kunming University of Science and Technology, China
Ting-Chung Poon
Affiliation:
Virginia Polytechnic Institute and State University
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Summary

To have some basic understanding of optical coherence, we discuss temporal coherence and spatial coherence quantitatively in the beginning of the Chapter. We then concentrate on spatial coherent image processing, followed by spatially incoherent image processing. While spatial coherent imaging systems lead to the concept of coherent point spread function and coherent transfer function, spatially incoherent imaging system introduces intensity point spread function and optical transfer function. Scanning image processing is also covered in the chapter, illustrating an important aspect in that a mask in front of the photodetector can change the coherence properties of the optical system. Finally, two-pupil synthesis of optical transfer functions is discussed, illustrating bipolar processing in incoherent imaging systems.

Keywords

temporal coherencespatial coherencespatially coherent image processingpupil functioncoherent point spread functioncoherent transfer functionspatially incoherent image processingintensity point spread functionoptical transfer functionscanning image processingtwo-pupil sysnthesis of optical transfer functions
Type
Chapter
Information
Modern Information Optics with MATLAB , pp. 119 - 150
Publisher: Cambridge University Press
Print publication year: 2023

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References

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Lohmann, A. W. and Rhodes, W. T. (1978). “Two-pupil synthesis of optical transfer functions,” Applied Optics 17, pp.1141–1150.CrossRefGoogle Scholar
Poon, T.-C. (2007) Optical Scanning Holography with MATLAB®. Springer, New York.CrossRefGoogle Scholar
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Zhang, Y., Poon, T.-C., Tsang, P. W. M., Wang, R., and Wang, L. (2019). “Review on feature extraction for 3-D incoherent image processing using optical scanning holography,” IEEE Transactions on Industrial Informatics 15 (11), pp. 6146–6154.CrossRefGoogle Scholar

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