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Dielectric-elastomer-based fabrication method for varifocal microlens array.

Lihui Wang, Tomohiko Hayakawa, Masatoshi Ishikawa

|December 17, 2017

Summary

This summary is machine-generated.

We developed a tunable varifocal microlens array using dielectric elastomers. This solid-state lens offers robust performance for applications like machine vision.

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Polymeric Microneedle Array Fabrication by Photolithography

Polymeric Microneedle Array Fabrication by Photolithography

Published on: November 17, 2015

Area of Science:

Optics and Photonics
Materials Science
Microfabrication

Background:

Traditional lenses face limitations due to thermal expansion, gravity, and vibrations.
Liquid-filled lenses are susceptible to environmental factors, impacting performance and robustness.

Purpose of the Study:

To present a novel method for fabricating a robust varifocal microlens array.
To demonstrate the tunable focal length capabilities of dielectric elastomer-based lenses.

Main Methods:

Fabrication of a microlens array using a dielectric elastomer (DE) sandwiched between two electrodes.
Application of controllable operating voltage to induce Maxwell force and deform the DE material.
Achieving tunable lens profiles through controlled curvature deformation.

Main Results:

The varifocal microlens array demonstrated a tunable focal length ranging from 950 mm to infinity.
The solid-based DE lens exhibited superior robustness compared to liquid-filled lenses against environmental factors.
The developed microlens array is suitable for integration into machine vision systems.

Conclusions:

Dielectric elastomer-based microlens arrays offer a robust and tunable alternative to conventional lenses.
The Maxwell force-induced deformation provides precise control over focal length.
This technology holds significant potential for advanced optical systems, particularly in machine vision.