title: Three-dimensional superresolution by three-zone complex pupil filters.
abstract: Complex pupil filters are introduced to improve the three-dimensional resolving power of an optical imaging system. Through the design of the essential parameters of such filters, the transmittance and radius of the first zone, three-dimensional superresolution is realized. The Strehl ratio and the transverse and axial gains of such filters are analyzed in detail. A series of simulation examples of such filters are also presented that prove that three-dimensional superresolution can be realized. The advantage of such filters is that it is easy to realize three-dimensional superresolution, and the disadvantage is that the sidelobes of the axial intensity distribution are too high. But this can be overcome by the application of a confocal system.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Graduate School of the Chinese Academy of Sciences, Shanghai 201800, China. maojinyun@hotmail.com
authors.forename: Maojin
authors.initials: M
authors.lastname: Yun
authors.forename: Liren
authors.initials: L
authors.lastname: Liu
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Sun
authors.forename: De'an
authors.initials: D
authors.lastname: Liu
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; 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*; D009716:Numerical Analysis, Computer-Assisted; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted