Extension ratio of depth of field by wavefront coding method.
An analysis of the depth of field (DOF) of the wavefront coding imaging system with a cubic phase mask is presented. A necessary condition on the base of that MTF of wavefront coding system is defocus-independent is described. Then the extension ratio of the DOF relative to that of traditional optical system is calculated. And the conclusion is also verified by the simulation results.
Pan
Chao
C
Optical Electronic Information Engineering College, University of Shanghai for Science and Technology, 200093 Shanghai, China. panchao6350665@126.com
Chen
Jiabi
J
Zgang
Rongfu
R
Zhuang
Sonlin
S
D000465:Algorithms; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity