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Journal articles
Design of a complex filter for depth of focus extension
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.
Cited literature [10 references]
https://hal-iogs.archives-ouvertes.fr/hal-00746928
Contributor : Fatima Pereira <>
Submitted on : Tuesday, October 30, 2012 - 9:53:51 AM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM
Long-term archiving on: : Thursday, January 31, 2013 - 3:45:26 AM
Contributor : Fatima Pereira <>
Submitted on : Tuesday, October 30, 2012 - 9:53:51 AM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM
Long-term archiving on: : Thursday, January 31, 2013 - 3:45:26 AM
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R49.pdf
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