Results 131 to 140 of about 13,611 (164)
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Electrically steered acoustic lens
The Journal of the Acoustical Society of America, 1999This invention is a composite acoustic lens that can be steered internally through electrical control. It can collect and direct acoustic energy from a plane wave to focus it on a transducer. It can also take the nearly omnidirectional output from a standard acoustic transducer and direct its energy in a plane wave.
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Synthesis of a fresnel acoustic lens for acoustic brightness thermometry
Acoustical Physics, 2007The applicability of different types of Fresnel acoustic lenses as antenna array systems in acoustic brightness thermometry of biological tissues is theoretically and numerically analyzed. On the basis of the technical feasibility criterion formulated for these systems, the wavelength suitable for the use in acoustic thermographs with arrays in the ...
E. V. Krotov +2 more
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Laser and acoustic lens for lithotripsy
The Journal of the Acoustical Society of America, 2003An acoustic focusing device whose acoustic waves are generated by laser radiation through an optical fiber. The acoustic energy is capable of efficient destruction of renal and biliary calculi and deliverable to the site of the calculi via an endoscopic procedure.
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Review of acoustic lens developments
The Journal of the Acoustical Society of America, 1977Use of acoustic lenses in underwater applications spans many decades. Lord Rayleigh describes an acoustic lens as early as 1879. Some well-documented experimental lenses were developed by Williams in the 1940's at General Electric. This work with lenses and reflectors led to the development of the U. S.
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Acoustic Field in a Luneberg Lens
The Journal of the Acoustical Society of America, 1968A wave solution is presented for plane acoustic radiation incident on a particular spherical, omnidirectional, perfectly focusing fluid lens.
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The Journal of the Acoustical Society of America, 1981
A cabinet for improving the sound output of an amplifier including an upright housing with a speaker mounted on the front, the front having one or more baffle openings, a device herein called a sound lens inserted in the baffle opening, the vibration of the speaker serving to induce vibration of the sound lens by condensation and rarefaction, by the ...
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A cabinet for improving the sound output of an amplifier including an upright housing with a speaker mounted on the front, the front having one or more baffle openings, a device herein called a sound lens inserted in the baffle opening, the vibration of the speaker serving to induce vibration of the sound lens by condensation and rarefaction, by the ...
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The Journal of the Acoustical Society of America, 1996
Lothar Hartmann, Gerhard Buchhotz
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Lothar Hartmann, Gerhard Buchhotz
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A review of acoustic Luneburg lens: Physics and applications
Mechanical Systems and Signal Processing, 2023Haihong Huang +2 more
exaly
Acoustic beam splitter based on acoustic metamaterial Luneburg lens
Physics Letters, Section A: General, Atomic and Solid State Physics, 2023Zhaoyong Sun, Liuxian Zhao, Qimin Liu
exaly
Frequency response of an underwater acoustic focusing composite lens
Applied Acoustics, 2021Shen Wang, Lisha Peng, Songling Huang
exaly