SLAAEP3 December   2025 ULC1001

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Acronyms
  5. 2 Introduction
  6. 3 Impedance Response
    1. 3.1 Piezo Only
    2. 3.2 Lens Cover
    3. 3.3 Lens Cover System (LCS)
  7. 4 Equivalent Circuit Model of LCS
  8. 5 LC Filter for LCS
  9. 6 Water Cleaning
  10. 7 Power Consumption
  11. 8 Reliability
  12. 9 Other Tests
    1. 9.1 De-ice
    2. 9.2 Mud Cleaning
    3. 9.3 Optical Interference
    4. 9.4 Waterproof Capability
  13. 10Resources

2 Introduction

The Ultrasonic Lens Cleaning (ULC) system is an electro-mechanical design to automatically detect and clean water, ice, or other contaminants from cover lenses in automotive, security, and industrial camera systems. The mechanical portion of the technology is called the Lens Cover System (LCS). Figure 2-1 illustrates the components of a ring piezo-based LCS, which consists of a housing cap, flexible seal, thin film, lens, glue, ring transducer, and housing base. A transducer glued to the lens and the thin film make up the Lens Cover. The Lens Cover is mounted inside a housing (cap + seal + base) to create the LCS.

Illustration of Flat Lens Cover System (LCS)Figure 2-1 Illustration of Flat Lens Cover System (LCS)

TI has designed and prototyped a ring piezo-based LCS: LCS-FL-RNG15. In the document, the tests and characterization results of the prototype are presented to show the performance of the LCS.

Attention:

TI has conducted a limited number of characterizations and tests on the LCS-FL-RNG15 prototype. The complete testing and validation requirements must be established by the end customers.