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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 20 — Jul. 10, 2008
  • pp: 3658–3668

Mechanical modeling of fluid-driven polymer lenses

Qingda Yang, Paul Kobrin, Charles Seabury, Sridhar Narayanaswamy, and William Christian  »View Author Affiliations


Applied Optics, Vol. 47, Issue 20, pp. 3658-3668 (2008)
http://dx.doi.org/10.1364/AO.47.003658


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Abstract

A finite-element model (FEM) is employed to study the pressure response of deformable elastic membranes used as tunable optical elements. The model is capable of determining in situ both the modulus and the prestrain from a measurement of peak deflection versus pressure. Given accurate values for modulus and prestrain, it is shown that the two parameters of a standard optical shape function (radius of curvature and conic constant) can be accurately predicted. The effects of prestrain in polydimethylsiloxane (PDMS) membranes are investigated in detail. It was found that prestrain reduces the sensitivity of the membrane shape to the details of the edge clamping. It also reduces the variation of the conic constant with changes in curvature. Thus the ability to control the prestrain as well as thickness and modulus is important to developing robust optical designs based on fluid-driven polymer lenses.

© 2008 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(310.6805) Thin films : Theory and design

ToC Category:
Lenses

History
Original Manuscript: March 13, 2008
Revised Manuscript: June 4, 2008
Manuscript Accepted: June 10, 2008
Published: July 9, 2008

Virtual Issues
Vol. 3, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Qingda Yang, Paul Kobrin, Charles Seabury, Sridhar Narayanaswamy, and William Christian, "Mechanical modeling of fluid-driven polymer lenses," Appl. Opt. 47, 3658-3668 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-20-3658

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