Pérez-López Sergio, Fuster José Miguel, Candelas Pilar, Tarrazó-Serrano Daniel, Castiñeira-Ibáñez Sergio, Rubio Constanza
Centro de Tecnologías Físicas, Universitat Politècnica de València, 46022 València, Spain.
Sensors (Basel). 2020 Jan 28;20(3):705. doi: 10.3390/s20030705.
In this work, we present a bifocal Fresnel zone plate (BiFZP) capable of generating focusing profiles with two different foci. The performance of the BiFZP is demonstrated in the ultrasound domain, with a very good agreement between the experimental measurements and the finite element method (FEM) simulations. This lens becomes an appealing alternative to other dual-focusing lenses, in which the foci location can only be set at a limited range of positions, such as M-bonacci zone plates. Moreover, the variation of the operating frequency has also been analyzed, providing an additional dynamic control parameter in this type of lenses.
在这项工作中，我们展示了一种能够生成具有两个不同焦点的聚焦轮廓的双焦点菲涅耳波带片（BiFZP）。BiFZP的性能在超声领域得到了验证，实验测量结果与有限元方法（FEM）模拟结果非常吻合。与其他双聚焦透镜相比，这种透镜成为一种有吸引力的替代方案，其他双聚焦透镜的焦点位置只能设置在有限的位置范围内，例如M-博纳西波带片。此外，还分析了工作频率的变化，为这类透镜提供了一个额外的动态控制参数。
