Next Article in Journal
3D Reconstruction of Space Objects from Multi-Views by a Visible Sensor
Next Article in Special Issue
A Semi-Analytical Solution for the Thickness-Vibration of Centrally Partially-Electroded Circular AT-Cut Quartz Resonators
Previous Article in Journal
Motor Control Training for the Shoulder with Smart Garments
Previous Article in Special Issue
Novel Gas Sensor Arrays Based on High-Q SAM-Modified Piezotransduced Single-Crystal Silicon Bulk Acoustic Resonators
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(7), 1690; https://doi.org/10.3390/s17071690

Pinhole Zone Plate Lens for Ultrasound Focusing

1
Centro de Tecnologías Físicas, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
2
Departamento de Comunicaciones, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
3
Departamento de Ingeniería Electrónica, Universitat de València, Avd. de la Universitat s/n, 46100 Burjassot, Valencia, Spain
*
Author to whom correspondence should be addressed.
Received: 26 June 2017 / Revised: 14 July 2017 / Accepted: 20 July 2017 / Published: 22 July 2017
(This article belongs to the Special Issue Acoustic Wave Resonator-Based Sensors)
View Full-Text   |   Download PDF [4441 KB, uploaded 22 July 2017]   |  

Abstract

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. View Full-Text
Keywords: ultrasonic lens; Fresnel lens; pinhole ultrasonic lens; Fresnel lens; pinhole
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Rubio, C.; Fuster, J.M.; Castiñeira-Ibáñez, S.; Uris, A.; Belmar, F.; Candelas, P. Pinhole Zone Plate Lens for Ultrasound Focusing. Sensors 2017, 17, 1690.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top