Near field diffraction of cylindrical convex gratings

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dc.contributor.authorTorcal Milla, Francisco José
dc.contributor.authorSánchez Brea, Luis Miguel
dc.contributor.authorBernabeu Martínez, Eusebio
dc.date.accessioned2023-06-19T14:59:07Z
dc.date.available2023-06-19T14:59:07Z
dc.date.issued2015
dc.description© 2015 IOP Publishing Ltd. The authors thank Jose Maria Herrera-Fernandez for his help with graphics. This work has been supported by the project DPI2011-27851 of the Ministry of Science and Innovation of Spain and the project Fagor Automation-UCM Ref. 92/2014.
dc.description.abstractWe analyze the field produced by a cylindrical convex diffraction grating at the Fresnel regime for several kinds of light sources, including a monochromatic quasipunctual source, finite size, and polychromatic sources. These results can help one understand the functioning of rotary optical encoder technology. A decrease in the self-image contrast is produced for finite nonpunctual sources. In addition, the polychromaticity of the source affects the smoothness of the self-images, making them quasicontinuous from a certain distance from the grating forward. Finally, we experimentally validate the obtained analytical predictions.
dc.description.departmentDepto. de Óptica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN), España
dc.description.sponsorshipProject Fagor Automation-UCM
dc.description.sponsorshipUniversidad Complutense de Madrid (UCM)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35521
dc.identifier.doi10.1088/2040-8978/17/3/035601
dc.identifier.issn2040-8978
dc.identifier.officialurlhttp://dx.doi.org/10.1088/2040-8978/17/3/035601
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/35041
dc.issue.number3
dc.journal.titleJournal of optics
dc.language.isoeng
dc.publisherIOP Publishing
dc.relation.projectIDDPI2011-27851
dc.relation.projectID92/2014
dc.rights.accessRightsopen access
dc.subject.cdu535
dc.subject.keywordRotary encoder
dc.subject.ucmÓptica (Física)
dc.subject.unesco2209.19 Óptica Física
dc.titleNear field diffraction of cylindrical convex gratings
dc.typejournal article
dc.volume.number17
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