High depth of focus by combining annular lenses

In some technological applications, optical systems that produce a high depth of focus and superresolving transversal responses are required. In this paper we present a pupil design consisting in a phase pupil with binary amplitude, that added to a conventional optical system, can accomplish these g...

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Autores principales: Ledesma, S., Escalera, J.C., Campos, J., Mazzaferri, J., Yzuel, M.J.
Formato: JOUR
Materias:
Apodization
Depth of focus
Phase modulation
Resolution
Focusing
Image analysis
Lenses
Optical resolving power
Problem solving
Annular lenses
Best image plane (BIP)
Optical systems
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00304018_v266_n1_p6_Ledesma
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00304018_v266_n1_p6_Ledesma
record_format dspace
spelling todo:paper_00304018_v266_n1_p6_Ledesma2023-10-03T14:40:12Z High depth of focus by combining annular lenses Ledesma, S. Escalera, J.C. Campos, J. Mazzaferri, J. Yzuel, M.J. Apodization Depth of focus Phase modulation Resolution Focusing Image analysis Lenses Optical resolving power Phase modulation Problem solving Annular lenses Apodization Best image plane (BIP) Depth of focus Optical systems In some technological applications, optical systems that produce a high depth of focus and superresolving transversal responses are required. In this paper we present a pupil design consisting in a phase pupil with binary amplitude, that added to a conventional optical system, can accomplish these goals. The pupil function is characterized by a complex amplitude that consists basically in combining two annular lenses with different focal length. Meanwhile the central portion of the pupil has an amplitude equal to 0, the external portion is modulated with two quadratic phases each one covering an annular zone. One of the phases corresponds to a convergent lens and the other to a divergent lens. The effect on the incident wavefront is to redirect the light in front of and behind the best image plane (BIP) producing a widened focus. The evolution of the transverse gain for the extended focus is also studied. Experimental results are given, and they confirm the extended focus and the superresolving behavior of the proposed pupil function. © 2006 Elsevier B.V. All rights reserved. Fil:Ledesma, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mazzaferri, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00304018_v266_n1_p6_Ledesma
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Apodization
Depth of focus
Phase modulation
Resolution
Focusing
Image analysis
Lenses
Optical resolving power
Phase modulation
Problem solving
Annular lenses
Apodization
Best image plane (BIP)
Depth of focus
Optical systems
spellingShingle Apodization
Depth of focus
Phase modulation
Resolution
Focusing
Image analysis
Lenses
Optical resolving power
Phase modulation
Problem solving
Annular lenses
Apodization
Best image plane (BIP)
Depth of focus
Optical systems
Ledesma, S.
Escalera, J.C.
Campos, J.
Mazzaferri, J.
Yzuel, M.J.
High depth of focus by combining annular lenses
topic_facet Apodization
Depth of focus
Phase modulation
Resolution
Focusing
Image analysis
Lenses
Optical resolving power
Phase modulation
Problem solving
Annular lenses
Apodization
Best image plane (BIP)
Depth of focus
Optical systems
description In some technological applications, optical systems that produce a high depth of focus and superresolving transversal responses are required. In this paper we present a pupil design consisting in a phase pupil with binary amplitude, that added to a conventional optical system, can accomplish these goals. The pupil function is characterized by a complex amplitude that consists basically in combining two annular lenses with different focal length. Meanwhile the central portion of the pupil has an amplitude equal to 0, the external portion is modulated with two quadratic phases each one covering an annular zone. One of the phases corresponds to a convergent lens and the other to a divergent lens. The effect on the incident wavefront is to redirect the light in front of and behind the best image plane (BIP) producing a widened focus. The evolution of the transverse gain for the extended focus is also studied. Experimental results are given, and they confirm the extended focus and the superresolving behavior of the proposed pupil function. © 2006 Elsevier B.V. All rights reserved.
format JOUR
author Ledesma, S.
Escalera, J.C.
Campos, J.
Mazzaferri, J.
Yzuel, M.J.
author_facet Ledesma, S.
Escalera, J.C.
Campos, J.
Mazzaferri, J.
Yzuel, M.J.
author_sort Ledesma, S.
title High depth of focus by combining annular lenses
title_short High depth of focus by combining annular lenses
title_full High depth of focus by combining annular lenses
title_fullStr High depth of focus by combining annular lenses
title_full_unstemmed High depth of focus by combining annular lenses
title_sort high depth of focus by combining annular lenses
url http://hdl.handle.net/20.500.12110/paper_00304018_v266_n1_p6_Ledesma
work_keys_str_mv AT ledesmas highdepthoffocusbycombiningannularlenses
AT escalerajc highdepthoffocusbycombiningannularlenses
AT camposj highdepthoffocusbycombiningannularlenses
AT mazzaferrij highdepthoffocusbycombiningannularlenses
AT yzuelmj highdepthoffocusbycombiningannularlenses
_version_ 1807319644657156096

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