Ultrasound scanners are widely used for medical diagnostics. A piezo electric element in the Ultrasound Probe of the scanner is projecting a sound beam into a the human body and scanning the reflection. The Shin-Etsu Polymer Silicone Rubber acoustic lens is giving the Ultrasound probes optimum performance due to the specific sound transmission characteristic of the moulded lens. The design and shape of the lens is dedicated to the application and used signal frequency.
A thin polyimide backing film is protecting the electronic sound sensor for environmental influences. Optional Copper film can be equiped for EMI protection.
Ultra-Sound lenses properties
| Parameter | Unit | Value |
|---|---|---|
| Hardness | Shore A | 70 |
| Density | Kg/dm^3 | 1.38 |
| Sound speed | m/s | 1010 |
| Acoustic impedance | kg/m^2.s | 1.41 |
| Acoustic attenuation at 3.5 MHz | dB/mm | 2.3 |
| PI backing film thickness | µm | 7.5/ 12.5/ 15/ 25 |
| Cu film thickness for EMI protection | µm | > 9 |
