Ultrasonic transducer, focused transducer and focused transducer manufacturing method

Abstract

The invention provides an ultrasonic transducer, a focused transducer and a focused transducer manufacturing method and relates to the technical field of ultrasonic detection. The ultrasonic transducer comprises a tube sleeve; at least two piezoelectric components are dispersedly disposed in the tube sleeve; the piezoelectric component comprises a piezoelectric vibrator and a matching layer, wherein the matching layer is located on the same end of the tube sleeve, and the frequency of the piezoelectric vibrator is not the same. The focused transducer comprises the above-mentioned ultrasonic transducer, and the matching layer forms a concave spherical surface in the tube sleeve. The focused transducer manufacturing method includes the following steps of heating and softening insulating filler, pressing the piezoelectric component with a part of a convex spherical surface until the piezoelectric component is recessed in the insulating filler and forms a concave spherical surface, coolingand solidifying the insulating filler, and then taking out the part of the convex spherical surface. With the piezoelectric vibrator in the piezoelectric component of different frequency, the frequency of the obtained corresponding ultrasonic wave is also different, and thus, the ultrasonic transducer is widened to obtain ultrasonic frequency bandwidth, and application range and practicality thereof are increased.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection, in particular to an ultrasonic transducer, a focusing transducer and a manufacturing method of the focusing transducer. Background technique [0002] Medical ultrasound imaging technology is one of the important clinical image diagnostic methods at present. It uses ultrasound as a carrier to detect the interior of organisms, and combines digital signals, image processing and computer technologies to extract effective echo signals from ultrasound echoes. Imaging organs to probe human or animal physiology and diagnostic information. [0003] In the process of ultrasonic testing, the transmission and reception of ultrasonic waves are realized through ultrasonic transducers. Piezoelectric transducers are generally used in ultrasonic testing. Piezoelectric transducers can be regarded as a three-port electromechanical, etc. Efficient circuit network, the core component of which is a piezo...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an ultrasonic transducer, a focusing transducer and a manufacturing method of the focusing transducer, so as to solve the problem that the frequency band range of the ultrasonic waves obtained in the ultrasonic transducers existing in the prior art is relatively small, resulting in the The technical problem that the transducer has a small application range and poor practicability

Images