圆柱形声学鲁讷堡透镜

2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI:10.1109/METAMATERIALS.2014.6948561

S. Kim

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引用次数: 9

摘要

我们通过改变透镜内部介质的密度，研制了一种二维声学吕讷堡透镜。透镜呈圆柱形，由大约700根半径小于2厘米的铝柱组成。它有15层，镜头直径为60cm。该透镜也将入射声波聚焦在透镜另一侧的边缘，频率范围为1500 ~ 2500赫兹。使入射波的声压提高3 ~ 5倍。

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Cylindrical acoustic Luneburg lens

We developed a two-dimensional acoustic Luneburg lens by changing the density of the medium inside the lens. The lens has a cylindrical shape and composes of about seven hundred aluminum columns with various radii of less than 2cm. It has 15 layers and the diameter of the lens is 60cm. The lens focuses the incoming acoustic waves on the edge of the opposite side of the lens as well in the frequency range of 1, 500Hz ~ 2, 500Hz. It increases the acoustic pressure of the incoming wave by 3 ~ 5 times.

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2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics

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