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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2484–2486

Circular dielectric liquid iris

C. Gary Tsai and J. Andrew Yeh  »View Author Affiliations

Optics Letters, Vol. 35, Issue 14, pp. 2484-2486 (2010)

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We demonstrate a liquid iris diaphragm using dielectric force, enabling its aperture to vary from 4 mm at the resting state to 1.5 mm at 160 V rms . The liquid iris is a packaged optical component comprised of transparent oil, opaque ink, and a set of driving electrodes on a glass substrate. The iris aperture shrinks with the dielectric force, which is exerted on the interface between the two nonconductive liquids. The transmittance was measured to exceed 85% with no antireflection coatings over the spectrum of visible light. The maximum electric power consumed is measured to be 5.7 mW .

© 2010 Optical Society of America

OCIS Codes
(110.1220) Imaging systems : Apertures
(230.4685) Optical devices : Optical microelectromechanical devices
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Imaging Systems

Original Manuscript: May 12, 2010
Revised Manuscript: June 14, 2010
Manuscript Accepted: June 15, 2010
Published: July 15, 2010

C. Gary Tsai and J. Andrew Yeh, "Circular dielectric liquid iris," Opt. Lett. 35, 2484-2486 (2010)

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