PURPOSE: A coupling pad and a ray acoustic system are provided to improve measurement reliability by sensing a sound wave from an object in an ultrasonic sensor through a sound wave transmitting unit of the coupling pad.CONSTITUTION: A coupling pad(100) includes a sound wave transmitting unit(110) for transmitting a sound wave and a light guide(120). The light guide is formed in the sound wave transmitting unit. The light guide includes an optical fiber or lens. A laser generating unit radiates laser to the light guide. An ultrasonic sensor unit senses the sound wave transmitted from the sound wave transmitting unit.COPYRIGHT KIPO 2012본 발명은 커플링 패드 및 광 음향 시스템에 관한 것이다.즉, 본 발명의 커플링 패드는 음파를 전달하는 음파 전달부와 상기 음파 전달부에 형성되며, 광이 통과되는 광통로를 포함하여 구성된다.
