Methods and apparatus using multistage ultrasonic lens cleaning for improved water removal

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10596604
APP PUB NO 20180085793A1
SERIAL NO

15492286

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Abstract

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Methods and apparatus for using two stage ultrasonic lens cleaning for water removal are disclosed. An apparatus can expel fluid from a droplet on an optical surface using an ultrasonic transducer mechanically coupled to the optical surface and having first and second resonant frequency bands. A signal generator can generate a first signal including a first frequency to be coupled with the ultrasonic transducer mechanically coupled to the surface, and can generate a second signal including a second frequency to be coupled with the ultrasonic transducer mechanically coupled to the surface. Switching circuitry can activate the ultrasonic transducer at the first frequency to reduce the droplet from a first size to a second size, and to activate the ultrasonic transducer at the second frequency to reduce the droplet from the second size to a third size.

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Patent Owner(s)

  • AGILENT TECHNOLOGIES TEXAS INSTRUMENTS INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fedigan, Stephen John Plano, US 37 408
Magee, David Patrick Allen, US 104 662

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