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Ultrasonic Lens Cleaning

Ultrasonic lens cleaning solutions utilize Audiowell's proprietary materials and algorithms that enable camera systems to quickly detect and use tiny vibrations to remove contaminants such as dirt, water and ice. Ultrasonic cleaning has many advantages over traditional cleaning methods, including high cleaning quality, speed, less damage, and full automation.
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Working Principles

Adopting Ultrasonic Lens Cleaning (ULC) technology, it uses tiny vibrations generated by ultrasonic waves to remove water, dirt and other contaminants from the surface of the lens cap. The product is suitable for electronic mirrors, car surveillance, mobile phone cameras and other types of small lenses.

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Vibration due to piezoelectric effect
When the electric field is applied to the piezoelectric transducer, it will produce mechanical deformation, and its strain is proportional to the electric field strength, which is called the inverse piezoelectric effect, the stronger the applied electric field strength, the greater the amplitude of vibration.

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Bimodal cleaning
Bimodal cleaning is a more advanced ULC method that employs two different standing waves in successive cleaning cycles. This method helps to eliminate cleaning blind spots that can occur in single-mode cleaning and ensures more comprehensive cleaning coverage.Bimodal cleaning is cleaner than single mode cleaning and more cost-effective than SAW. 【
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Features

- High cleaning quality with low dirt residues

- Fast cleaning speed

- Less damage to parts

- Automatic


Transducer dimensions
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Specifications
ItemSpecifications
Transducer dimensions

Outer diameter:21mm
Inner diameter:15mm
Thickness:1.5mm

Frequency

40KHz~3.5MH

Communication method

IIC、UART

Voltage

12V

Dewatering efficiency

0.022ml/s

Current

100mA~2A

Slip water efficiency

8.3mm/s

Melting ice time

7.9mm³/s

Applications

- Car Camera

- Robot Camera

- Industrial Equipment Camera

- Security Camera

- Other Small Cameras

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Related Components


- Configurable DSP for ultrasonic lens cleaning
DSP.jpg

ArchitectureDSP

Input signal

I2C

Vs (min) 

3V

Vs (max) 

3.6V

Vout

3.3V (2 x PWM signals)

Iq (typ) 

7mA

Bandwidth (typ) 

5MHz

Shutdown current (ISD)

1.2µA

Operating temperature

-40°C to +125°C



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