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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 5 — Mar. 10, 2014
  • pp: 6133–6146

Opto-mechanical analysis of nonlinear elastomer membrane deformation under hydraulic pressure for variable-focus liquid-filled microlenses

Seung Tae Choi, Byeong Soo Son, Gye Won Seo, Si-Young Park, and Kyung-Sick Lee  »View Author Affiliations

Optics Express, Vol. 22, Issue 5, pp. 6133-6146 (2014)

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Nonlinear large deformation of a transparent elastomer membrane under hydraulic pressure was analyzed to investigate its optical performance for a variable-focus liquid-filled membrane microlens. In most membrane microlenses, actuators control the hydraulic pressure of optical fluid so that the elastomer membrane together with the internal optical fluid changes its shape, which alters the light path of the microlens to adapt its optical power. A fluid-structure interaction simulation was performed to estimate the transient behavior of the microlens under the operation of electroactive polymer actuators, demonstrating that the viscosity of the optical fluid successfully stabilizes the fluctuations within a fairly short period of time during dynamic operations. Axisymmetric nonlinear plate theory was used to calculate the deformation profile of the membrane under hydrostatic pressure, with which optical characteristics of the membrane microlens were estimated. The effects of gravitation and viscoelastic behavior of the elastomer membrane on the optical performance of the membrane microlens were also evaluated with finite element analysis.

© 2014 Optical Society of America

OCIS Codes
(220.1000) Optical design and fabrication : Aberration compensation
(230.3990) Optical devices : Micro-optical devices
(220.1080) Optical design and fabrication : Active or adaptive optics

ToC Category:
Optical Devices

Original Manuscript: December 30, 2013
Revised Manuscript: March 2, 2014
Manuscript Accepted: March 3, 2014
Published: March 7, 2014

Seung Tae Choi, Byeong Soo Son, Gye Won Seo, Si-Young Park, and Kyung-Sick Lee, "Opto-mechanical analysis of nonlinear elastomer membrane deformation under hydraulic pressure for variable-focus liquid-filled microlenses," Opt. Express 22, 6133-6146 (2014)

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