DocumentCode
145708
Title
Cylindrical acoustic Luneburg lens
Author
Kim, Seong-Ho
Author_Institution
Div. of Marine Eng., Mokpo Nat. Maritime Univ., Mokpo, South Korea
fYear
2014
fDate
25-28 Aug. 2014
Firstpage
364
Lastpage
366
Abstract
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.
Keywords
acoustic devices; acoustic imaging; acoustic materials; aluminium; gradient index optics; lenses; 2D acoustic Luneburg lens; Al; acoustic pressure; acoustic waves; aluminum columns; cylindrical acoustic Luneburg lens; lens diameter; medium density; size 60 cm; Acoustics; Aluminum; Electromagnetics; Lenses; Metamaterials;
fLanguage
English
Publisher
ieee
Conference_Titel
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location
Lyngby
Print_ISBN
978-1-4799-3450-8
Type
conf
DOI
10.1109/MetaMaterials.2014.6948561
Filename
6948561
Link To Document