| CPC G01N 29/28 (2013.01) [G01N 29/2487 (2013.01); G10K 11/002 (2013.01)] | 11 Claims |
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1. A cover unit for ultrasonic transducers adapted to radiate high power ultrasound signals through amplification of received ultrasound, the cover unit comprising:
a body to which an ultrasound generator adapted to generate ultrasound is coupled;
first slits disposed at a lower portion of the body in the form of multiple rings having different radii and spaced apart from each other, the first slits having a first width;
second slits depressed from an upper surface of the body to communicate with the first slits and having a second width smaller than the first width;
third slits depressed from the upper surface of the body and each disposed between adjacent second slits, the third slits having a third width smaller than the first width;
a bottom formed under the first slits;
a first sidewall formed between adjacent first slits; and
a second sidewall formed between a second slit of the second slits and a third slit of the third slits.
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