Ultrasonic transducer
OwnerFrank Joseph Pompeiinventor
Life of this patent
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Abstract
Ultrasonic transducers that are capable of generating increased levels of ultrasound, as well as receiving ultrasonic waves with increased sensitivity. The ultrasonic transducers include a back cover, a protective front cover, a backplate, and a vibrator film layer disposed between the backplate and the protective front cover. The backplate includes a plurality of grooves formed on a surface thereof facing the vibrator film layer. Each groove includes upper edges having cross-sectional contours that gradually tend toward the deepest part of the groove to allow a larger area of the backplate to be closer to the vibrator film layer, thereby increasing the resulting electric field, and, consequently, increasing the output power and sensitivity of the ultrasonic transducer.
Claims10
A backplate for an ultrasonic transducer, comprising:
- a first surface having a surface area configured to face a vibrator film of the ultrasonic transducer;
- and
- a plurality of depressions formed in the surface area,
- wherein the plurality of depressions have walls with steep angle portions extending toward deepest parts of the respective depressions and shallow angle portions extending toward upper edges of the respective depressions, the shallow angle portions being configured to increase an amount of the surface area near the vibrator film.
Dependencies are inferred from the claim text.