Pinhole Zone Plate Lens for Ultrasound Focusing

[EN] The focusing capabilities of a pinhole zone plate lens are presented and compared with those of a conventional Fresnel zone plate lens. The focusing properties are examined both experimentally and numerically. The results confirm that a pinhole zone plate lens can be an alternative to a Fresnel...

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Detalhes bibliográficos
Autores: Rubio Michavila, Constanza|||0000-0002-4395-7473, Fuster Escuder, José Miguel|||0000-0001-7778-8834, Castiñeira-Ibáñez, Sergio|||0000-0001-6414-3906, Uris Martínez, Antonio|||0000-0002-2005-2305, Belmar Ibáñez, Francisco|||0000-0003-4412-0007, Candelas Valiente, Pilar|||0000-0002-9924-7673
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/94541
Acesso em linha:https://riunet.upv.es/handle/10251/94541
Access Level:acceso abierto
Palavra-chave:ultrasonic lens
Fresnel lens
pinhole
MATEMATICA APLICADA
FISICA APLICADA
TEORIA DE LA SEÑAL Y COMUNICACIONES
Descrição
Resumo:[EN] The focusing capabilities of a pinhole zone plate lens are presented and compared with those of a conventional Fresnel zone plate lens. The focusing properties are examined both experimentally and numerically. The results confirm that a pinhole zone plate lens can be an alternative to a Fresnel lens. A smooth filtering effect is created in pinhole zone plate lenses, giving rise to a reduction of the side lobes around the principal focus associated with the conventional Fresnel zone plate lens. The manufacturing technique of the pinhole zone plate lens allows the designing and constructing of lenses for different focal lengths quickly and economically and without the need to drill new plates.

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