Texas Instruments Incorporated
UTLRASONIC LENS CLEANER

Abstract:

An apparatus includes a lens, a transducer and a driver, where the lens has a first side, a second side, and a lens radius, and the transducer has a transducer outer radius. The transducer is coupled to the first side of the lens, and the transducer outer radius is less than the lens radius. The driver has output terminals coupled to the transducer and is configured to provide an oscillating drive signal at a non-zero frequency to vibrate the lens. An o-ring is positioned between a clamp and the second side of the lens, where the o-ring has a nominal radius that is less than or equal to a nominal radius of the transducer.