Transparent ultrasonic transducer with beam shaping and method of assembling same

Abstract

A transparent ultrasonic transducer apparatus for multi-mode optical imaging on a target object is provided. The device comprises a transparent piezoelectric transducer, one or more wires and an optical lens. A transparent piezoelectric transducer having a first acoustic impedance is configured to receive acoustic waves from a target. The transparent piezoelectric transducer has a first surface and a second surface. The first surface and the second surface are coated with transparent conductive coatings. An optical lens is in contact with and optically coupled to the first surface of the transparent piezoelectric transducer. The optical lens is made of a material having a second acoustic impedance, and the first acoustic impedance and the second acoustic impedance are substantially similar to each other to minimize acoustic impedance mismatch, thereby improving sensitivity of the device. 提供了一种用于在目标物上进行多模式光学成像的透明超声换能器装置。该装置包括透明压电换能器、一根或多根导线以及光学透镜。具有第一声阻抗的透明压电换能器被配置为接收来自目标物的声波。透明压电换能器具有第一表面和第二表面。第一表面和第二表面涂覆有透明导电涂层。光学透镜与透明压电换能器的第一表面接触并光学耦合到该第一表面。光学透镜由具有第二声阻抗的材料制成，并且第一声阻抗和第二声阻抗基本上是相似的，以最小化声阻抗失配，从而提高装置的灵敏度。