title: Asymmetric phase masks for extended depth of field.
abstract: We present a family of asymmetric phase masks that extends the depth of field of an optical system. To verify our proposal, we compute several modulation transfer functions with focus errors, and we report numerical simulations of the images that can be achieved by use of our proposed procedure.
authors.affiliation: Instituto Nacional de Astrofísica, Optica y Electrónica, Apartado Postal 216, Puebla 72000, Puebla, Mexico. betina@inaoep.mx
authors.forename: Albertina
authors.initials: A
authors.lastname: Castro
authors.forename: Jorge
authors.initials: J
authors.lastname: Ojeda-Castañeda