Phase-space representation of partially coherent imaging systems using the Cohen class distribution.
We develop a phase-space representation (termed phase-space imager) suitable for analysis and design of imaging systems that use large illumination apertures (partially coherent illumination). The representation, developed from the transmission cross-coefficient model, falls in the general Cohen class of distributions and elegantly captures the bilinear nature of image formation in partially coherent systems. It uses only the requisite number of dimensions and leads to an efficient algorithm for calculating images. Computed partially coherent images of a double slit and a two-dimensional sinusoidal spoke are presented.
Mehta
Shalin B
SB
Optical Bioimaging Laboratory, Division of Bioengineering, National University of Singapore, Block-E3A, #7-10,7 Engineering Drive 1, Singapore 118431. shalin.mehta@gmail.com
Sheppard
Colin J R
CJ
D000465:Algorithms; D001185:Artificial Intelligence; D004867:Equipment Design; D005583:Fourier Analysis; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008027:Light; D015233:Models, Statistical; D055095:Optics and Photonics; D015203:Reproducibility of Results; D013997:Time Factors