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Dynamic Response of Elastomer-Based Liquid-Filled Variable Focus Lens.

Lihui Wang1,2, Masatoshi Ishikawa3,4

  • 1Guangdong Institute of Semiconductor Industrial Technology, Guangdong Academy of Sciences, No.363 Changxing Rd., Tianhe, Guangzhou 510-650, China. wanglihui@gdisit.com.

Sensors (Basel, Switzerland)
|October 27, 2019
PubMed
Summary
This summary is machine-generated.

This study explores factors influencing the dynamic response of liquid-filled variable focus lenses. Smaller aperture sizes demonstrate superior dynamic performance, crucial for lens applications.

Keywords:
aperture sizesdynamic responseliquid-filled variable focus lensnatural frequency

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Mechanical Engineering

Background:

  • Variable focus lenses dynamically alter focal length by changing refractive surface curvature and media.
  • Lens performance is critically evaluated by its dynamic response.
  • Optimizing dynamic response is essential for advanced optical systems.

Purpose of the Study:

  • Investigate key factors impacting the dynamic response of large-aperture liquid-filled variable focus lenses.
  • Analyze the relationship between physical properties of the deformable surface and dynamic performance.
  • Experimentally validate theoretical findings on prototype lenses.

Main Methods:

  • Theoretical analysis of a circular disk model representing the deformable lens surface.
  • Experimental testing of elastomer-based liquid-filled variable focus lens prototypes.
  • Evaluation of dynamic response across different aperture sizes (20 mm and 30 mm).

Main Results:

  • Theoretical analysis indicates that disk diameter, thickness, and stiffness significantly influence dynamic response by affecting the first natural frequency.
  • Experimental results show that a smaller aperture size (20 mm) yields an excellent dynamic response.
  • Aperture size is identified as a critical parameter for optimizing lens dynamic performance.

Conclusions:

  • The physical characteristics of the deformable surface are paramount in determining the dynamic response of liquid-filled variable focus lenses.
  • Smaller aperture sizes are advantageous for achieving high dynamic response in these lenses.
  • Findings provide valuable insights for designing high-performance variable focus optical systems.