Castro Albertina, Ojeda-Castañeda Jorge
Instituto Nacional de Astrofísica, Optica y Electrónica, Apartado Postal 216, Puebla 72000, Puebla, Mexico.
Appl Opt. 2004 Jun 10;43(17):3474-9. doi: 10.1364/ao.43.003474.
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.