title: Extension ratio of depth of field by wavefront coding method.
abstract: 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.
authors: Optical Electronic Information Engineering College, University of Shanghai for Science and Technology, 200093 Shanghai, China. panchao6350665@126.com
authors: Chao
authors: C
authors: Pan
authors: Jiabi
authors: J
authors: Chen
authors: Rongfu
authors: R
authors: Zgang
authors: Sonlin
authors: S
authors: Zhuang
mesh_terms: 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