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Dual-channel high-speed functional photoacoustic microscopy with ultra-wide field of view. [PDF]
Light Sci ApplNguyen VT +9 more
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Integrating music information retrieval into performers' reflective practice: an interdisciplinary approach to performance learning. [PDF]
Front PsycholKim YJ, Song MK.
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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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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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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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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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Nonspherical acoustic lens study
The Journal of the Acoustical Society of America, 1976A successful short focal length radar lens design technique was adapted to the problem of nonspherical thin underwater acoustic lens development and construction. The motivation was furnished by the many sonar requirements for small size lenses capable of operation in a scanning mode.
Kevin T. Corbett +2 more
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Planar Acoustic Microscope Lens
1982The 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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The Journal of the Acoustical Society of America, 1994
An acoustic lens system is constructed so that at least one surface of acoustic lenses constituting the acoustic lens system is an aspherical surface, which has such a shape that curvature moderates progressively in separating from the axis of the acoustic lens system, and an acoustic beam stop is provided therein.
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An acoustic lens system is constructed so that at least one surface of acoustic lenses constituting the acoustic lens system is an aspherical surface, which has such a shape that curvature moderates progressively in separating from the axis of the acoustic lens system, and an acoustic beam stop is provided therein.
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The Journal of the Acoustical Society of America, 1984
A lens structure is disclosed for a transducer that is utilized to transmit pulses of alternating pressure waves into the body of a patient and produce signals in response to reflections from the body. The lens is comprised of a first lens element having a concave face facing the crystals and a second lens element filling the space between.
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A lens structure is disclosed for a transducer that is utilized to transmit pulses of alternating pressure waves into the body of a patient and produce signals in response to reflections from the body. The lens is comprised of a first lens element having a concave face facing the crystals and a second lens element filling the space between.
openaire +1 more source