| 摘要 |
PURPOSE:To attain output of an ultrasonic wave of nearly uniform level from the entire region of an ultrasonic wave output face by bonding the ultrasonic wave vibrator with heating to one face in the lengthwise direction of a back plate and dividing minutely the ultrasonic wave vibrator through the dicing processing. CONSTITUTION:The ultrasonic wave vibrator 1 using a lead zirconate titanate as a raw material is supported to the back plate 4 made of plastic or rubber. Reinforced plates 20, 21 made of an elastic member having a small thermal coefficient are fixed to the side face in the lengthwise direction of the back plate 4. Then plural electrodes 20A, 21A leading out the signal for the use of the ultrasonic wave vibrator 1 as a transmission/reception vibrator are provided to the outer face of the reinforced plates 20, 21. The ultrasonic wave vibrator 1 is bonded with heat to the back plate 4 to which the reinforced plates are fixed and since the thermal distortion of the back plate 4 is suppressed by the action of the reinforced plate, the flat state of the ultrasonic wave vibrator 1 is maintained almost perfectly.
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