Title:
超音波照射装置
Document Type and Number:
Japanese Patent JP4356100
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To sweep an ultrasonic wave in an object at various irradiation intensities and angles. SOLUTION: When an input electrical signal is applied to a first input interdigital electrode 2, a first acoustic wave is excited on a piezoelectric substrate 1. The non-leaking component of the first acoustic wave is detected by an output interdigital electrode 4 as a delayed electrical signal. The delayed electrical signal is amplified by an amplifier 5 and a part of the amplified signal is applied again to the first input interdigital electrode 2, the remaining part is inputted to a second input interdigital electrode 3, a second acoustic wave is excited on the piezoelectric substrate 1, and the object is irradiated with the leaking component as the vertical wave of intensity, corresponding to a voltage changed by a voltage controller 6 via the other end face of the piezoelectric substrate 1.
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Inventors:
Koji Toda
Application Number:
JP2000120670A
Publication Date:
November 04, 2009
Filing Date:
April 21, 2000
Export Citation:
Assignee:
Koji Toda
International Classes:
A61B18/00; H04R17/00; H01L41/08; H01L41/09; H04R3/00
Domestic Patent References:
| JP7322395A |