Design of a complex filter for depth of focus extension - Archive ouverte HAL Access content directly
Journal Articles Optics Letters Year : 2009

Design of a complex filter for depth of focus extension

(1, 2) , (2) , (1) , (1)
1
2

Abstract

Different methods such as axilens and binary-phase filter have been investigated to improve the depth of focus. A method is proposed to calculate an amplitude-phase pupil filter and obtain the desired distribution of intensity along the optical axis. It produces a narrow spot with a uniform intensity level over a large depth of focus, comparable to the performance obtainable with binary-phase filters. This filter is of particular interest for applications where very low intensity fluctuations along the focus range are required.
Fichier principal
Vignette du fichier
R49.pdf (196.64 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-00746928 , version 1 (30-10-2012)

Identifiers

  • HAL Id : hal-00746928 , version 1

Cite

Frédéric Diaz, François Goudail, Brigitte Loiseau, Jean-Pierre Huignard. Design of a complex filter for depth of focus extension. Optics Letters, 2009, 34 (8), pp.1171-1173. ⟨hal-00746928⟩
78 View
312 Download

Share

Gmail Facebook Twitter LinkedIn More