Transparent-ultrasonic-sensor-based optical-ultrasonic integrated endoscopic probe, endoscope apparatus, and catheter apparatus

A transparent-ultrasonic-sensor-based optical-ultrasonic integrated endoscopic probe, comprising:

• an optical fiber laser unit emitting light;
• a transparent ultrasonic sensor arranged between an object to be measured and the optical fiber laser unit to transmit, therethrough, the light emitted from the optical fiber laser unit, coaxially aligned with the light emitted from the optical fiber laser unit, radiating ultrasonic waves at the object, and receiving reflected ultrasonic waves;
• a camera acquiring an image of the object through the transparent ultrasonic sensor;
• and
• an optical lens arranged between the transparent ultrasonic sensor and the optical fiber laser unit, and adjusting characteristics of light from the optical fiber laser unit,
• wherein the transparent ultrasonic sensor includes:
• a matching unit performing optical impedance matching and made of a transparent material;
• a piezoelectric unit located behind the matching unit, radiating the ultrasonic waves and made of the transparent material;
• and
• a correcting lens unit located behind the piezoelectric unit, adjusting a focus of light passing through the matching unit and made of a transparent material.