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Planar Acoustic Microscope Lens
, 1982 The concept of a planar acoustic microscope lens to be used in the standard geometry of a scanning acoustic microscope (I) has been discussed previously (2,3). In this paper we wish to look a little more closely at the focussing mechanism of this lens and to consider some further extensions of the concept.
Farnell, G. W., Jen, C. K.
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Acoustic Transducers and Lens Design for Acoustic Microscopy
, 1987 The transducer-lens system is one major component in the performance of an acoustic microscope. The design criteria for the various types of applications of an acoustic microscope are different. For surface imaging applications, it is desired to have a small spot size and low sidelobe level.
Chou, C.-H., Khuri-Yakub, B.
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Lens design for acoustic microscopy
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1988Design criteria for acoustic microscope lenses are examined with respect to their intended application. Aside from buffer rod material and F-number, the factors influencing the lens design are the critical angle for surface wave excitation, lens illumination, and leak rate of the surface wave on the sample.
C H, Chou, B T, Khuri-Yakub, G S, Kino
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The Journal of the Acoustical Society of America, 1978
The theory of an acoustical lens is presented and the construction of such a lens is described. In the present work three experiments are described, in which images of acoustical objects are formed. With the acosutical lens the intermediate step of the conventional acoustical holography of transfering the acoustical hologram to an optical system is ...
C. G. Stephanis, G. D. Hampsas
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The theory of an acoustical lens is presented and the construction of such a lens is described. In the present work three experiments are described, in which images of acoustical objects are formed. With the acosutical lens the intermediate step of the conventional acoustical holography of transfering the acoustical hologram to an optical system is ...
C. G. Stephanis, G. D. Hampsas
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2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
Fisheye lens and Luneburg lens are lenses with different refractive index distributions. Combination of two of them in an acoustic wave will pave way for special features in acoustic wave and simplify methods of focusing or defocusing acoustic energy.
Muhyiddeen Yahya +3 more
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Fisheye lens and Luneburg lens are lenses with different refractive index distributions. Combination of two of them in an acoustic wave will pave way for special features in acoustic wave and simplify methods of focusing or defocusing acoustic energy.
Muhyiddeen Yahya +3 more
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The Journal of the Acoustical Society of America, 1989
An acoustic lens arrangement having at least one transducer for the generation and/or for the reception of a plane acoustic wavefield. The arrangement includes a focusing surface for focusing the acoustic wavefield in an object region and at least one medium for the low-loss transmission of the acoustic wavefield between a transducer, the focusing ...
Abdullah Atalar, Hayrettin Koeymen
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An acoustic lens arrangement having at least one transducer for the generation and/or for the reception of a plane acoustic wavefield. The arrangement includes a focusing surface for focusing the acoustic wavefield in an object region and at least one medium for the low-loss transmission of the acoustic wavefield between a transducer, the focusing ...
Abdullah Atalar, Hayrettin Koeymen
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Underwater imaging with a moving acoustic lens
IEEE Transactions on Image Processing, 1998The acoustic lens is a high-resolution, forward-looking sonar for three dimensional (3-D) underwater imaging. We discuss processing the lens data for recreating and visualizing the scene. Acoustical imaging, compared to optical imaging, is sparse and low resolution.
Behzad Kamgar-Parsi +2 more
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Liquid acoustic lens for photoacoustic tomography
Optics Letters, 2013Recently, intensive research has been conducted to accelerate the development of photoacoustic (PA) imaging modality for biomedical applications. The use of acoustic lenses to collect ultrasound signals is of great interest. This Letter presents the design and fabrication of a liquid acoustic diverging lens, which can enlarge the acceptance angle of an
Chaolong, Song, Lei, Xi, Huabei, Jiang
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An Acoustic Lens as a Directional Microphone
The Journal of the Acoustical Society of America, 1953An acoustic lens combined with a conical horn can be used to obtain a highly directional microphone without some of the disadvantages of the parabolic microphone. The directional characteristics can be calculated satisfactorily if one assumes that the horn provides uniform flooding of the lens aperture.
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