Comparative study of wavefront coding imaging with rotational and non-rotational symmetric phase masks

Jiangfei Hu; Feng Xu; Xiaonan Zhao; Chinhua Wang

doi:10.1117/12.2035098

23 August 2013 Comparative study of wavefront coding imaging with rotational and non-rotational symmetric phase masks

Jiangfei Hu, Feng Xu, Xiaonan Zhao, Chinhua Wang

Proceedings Volume 8911, International Symposium on Photoelectronic Detection and Imaging 2013: Micro/Nano Optical Imaging Technologies and Applications; 89110Z (2013) https://doi.org/10.1117/12.2035098
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Wavefront coding enables conventional optical imaging systems to operate over an extended depth of field/focus by modifying the light field using a specially designed phase mask. Different phase masks can be used to alter the transmitted wavefront of the optical system which may result in different performances in terms of the capability of the depth-of-focus extension, aberration suppression and the process of imaging acquirement. In this paper, we present a comparative study on the performances of two major different categories of the phase mask, i.e., rotational symmetric and asymmetric type phase masks. Three different types of phase masks that are of cubic, quartic, and logarithmic phase profile are investigated. Fabrication and metrology of a cubic mask is conducted and a full cycle of imaging process including the image coding and decoding is performed.

Citation Download Citation

Jiangfei Hu, Feng Xu, Xiaonan Zhao, and Chinhua Wang "Comparative study of wavefront coding imaging with rotational and non-rotational symmetric phase masks", Proc. SPIE 8911, International Symposium on Photoelectronic Detection and Imaging 2013: Micro/Nano Optical Imaging Technologies and Applications, 89110Z (23 August 2013); https://doi.org/10.1117/12.2035098

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KEYWORDS

Imaging systems

Point spread functions

Modulation transfer functions

Wavefronts

Image processing

Optical imaging

Image filtering

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