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Waveguide for a bulk-type medium, vibrator using same to transmit shear waves to a bulk-type medium, and method using the vibrator to transmit shear waves to a bulk-type medium

  • US 9,527,111 B2
  • Filed: 10/05/2012
  • Issued: 12/27/2016
  • Est. Priority Date: 10/07/2011
  • Status: Active Grant
First Claim
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1. A waveguide comprising:

  • a vibrating portion which has a plate shape, a width w2 and a thickness t2, and is vibrated by a vibrating unit;

    a transmitting portion which transmits shear waves generated by the vibrating unit to a bulk-type medium, and has a plate shape, a width w2 and a thickness t3 that is thicker than the thickness t2 of the vibrating portion;

    a connecting portion which contacts both the vibrating portion and the transmitting portion and has a thickness varying from a portion contacting the vibrating portion to a portion contacting the transmitting portion; and

    a vibrating unit which generates a shear wave in the vibration portion in a direction parallel to the plane of the vibration portion,wherein the width w2 is larger than the thickness t2 of the vibrating portion and the thickness t3 of the transmitting portion.

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