Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques

In the optical quality measuring process of an optical system, including diamond-turning components, the use of a laser light source can produce an undesirable speckle effect in a Shack-Hartmann (SH) CCD sensor. This speckle noise can deteriorate the precision and accuracy of the wavefront sensor me...

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Detalles Bibliográficos
Autores: Quiroga Mellado, Juan Antonio, Vargas Balbuena, Javier, González Fernández, Luis M., Belenguer Dávila, Tomás
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/43969
Acceso en línea:https://hdl.handle.net/20.500.14352/43969
Access Level:acceso abierto
Palabra clave:535
Wave-Front Reconstruction
Sensor
Aberrations
Eye
Óptica (Física)
2209.19 Óptica Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/43969
network_acronym_str ES
network_name_str España
repository_id_str
spelling Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniquesQuiroga Mellado, Juan AntonioVargas Balbuena, JavierGonzález Fernández, Luis M.Belenguer Dávila, Tomás535Wave-Front ReconstructionSensorAberrationsEyeÓptica (Física)2209.19 Óptica FísicaIn the optical quality measuring process of an optical system, including diamond-turning components, the use of a laser light source can produce an undesirable speckle effect in a Shack-Hartmann (SH) CCD sensor. This speckle noise can deteriorate the precision and accuracy of the wavefront sensor measurement. Here we present a SH centroid detection method founded on computer-based techniques and capable of measurement in the presence of strong speckle noise. The method extends the dynamic range imaging capabilities of the SH sensor through the use of a set of different CCD integration times. The resultant extended range spot map is normalized to accurately obtain the spot centroids. The proposed method has been applied to measure the optical quality of the main optical system (MOS) of the mid-infrared instrument telescope smulator. The wavefront at the exit of this optical system is affected by speckle noise when it is illuminated by a laser source and by air turbulence because it has a long back focal length (3017 mm). Using the proposed technique, the MOS wavefront error was measured and satisfactory results were obtained.The Optical Society of AmericaUniversidad Complutense de Madrid20102010-05-0120102010-05-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/43969reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/439692026-06-02T12:44:21Z
dc.title.none.fl_str_mv Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
title Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
spellingShingle Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
Quiroga Mellado, Juan Antonio
535
Wave-Front Reconstruction
Sensor
Aberrations
Eye
Óptica (Física)
2209.19 Óptica Física
title_short Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
title_full Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
title_fullStr Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
title_full_unstemmed Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
title_sort Shack-Hartmann centroid detection method based on high dynamic range imaging and normalization techniques
dc.creator.none.fl_str_mv Quiroga Mellado, Juan Antonio
Vargas Balbuena, Javier
González Fernández, Luis M.
Belenguer Dávila, Tomás
author Quiroga Mellado, Juan Antonio
author_facet Quiroga Mellado, Juan Antonio
Vargas Balbuena, Javier
González Fernández, Luis M.
Belenguer Dávila, Tomás
author_role author
author2 Vargas Balbuena, Javier
González Fernández, Luis M.
Belenguer Dávila, Tomás
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 535
Wave-Front Reconstruction
Sensor
Aberrations
Eye
Óptica (Física)
2209.19 Óptica Física
topic 535
Wave-Front Reconstruction
Sensor
Aberrations
Eye
Óptica (Física)
2209.19 Óptica Física
description In the optical quality measuring process of an optical system, including diamond-turning components, the use of a laser light source can produce an undesirable speckle effect in a Shack-Hartmann (SH) CCD sensor. This speckle noise can deteriorate the precision and accuracy of the wavefront sensor measurement. Here we present a SH centroid detection method founded on computer-based techniques and capable of measurement in the presence of strong speckle noise. The method extends the dynamic range imaging capabilities of the SH sensor through the use of a set of different CCD integration times. The resultant extended range spot map is normalized to accurately obtain the spot centroids. The proposed method has been applied to measure the optical quality of the main optical system (MOS) of the mid-infrared instrument telescope smulator. The wavefront at the exit of this optical system is affected by speckle noise when it is illuminated by a laser source and by air turbulence because it has a long back focal length (3017 mm). Using the proposed technique, the MOS wavefront error was measured and satisfactory results were obtained.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-05-01
2010
2010-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/43969
url https://hdl.handle.net/20.500.14352/43969
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The Optical Society of America
publisher.none.fl_str_mv The Optical Society of America
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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