Adjustable hybrid diffractive/refractive achromatic lens

Pouria Valley, Nickolaos Savidis, James T Schwiegerling, Mohammad Reza Dodge, Gholam Peyman, Nasser N Peyghambarian

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We demonstrate a variable focal length achromatic lens that consists of a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac voltage input. The focusing power of the diffractive lens is adjusted by electrically modifying the sub-zones and re-establishing phase wrapping points. The refractive lens includes a fluid chamber with a flat glass surface and an opposing elastic polydimethylsiloxane (PDMS) membrane surface. Inserting fluid volume through a pump system into the clear aperture region alters the membrane curvature and adjusts the refractive lens' focal position. Primary chromatic aberration is remarkably reduced through the coupling of the fluidic and diffractive lenses at selected focal lengths. Potential applications include miniature color imaging systems, medical and ophthalmic devices, or any design that utilizes variable focal length achromats.

Original languageEnglish (US)
Pages (from-to)7468-7479
Number of pages12
JournalOptics Express
Volume19
Issue number8
DOIs
StatePublished - Apr 11 2011

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lenses
fluidics
liquid crystals
membranes
fluids
low voltage
aberration
chambers
apertures
curvature
pumps
color
glass

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Adjustable hybrid diffractive/refractive achromatic lens. / Valley, Pouria; Savidis, Nickolaos; Schwiegerling, James T; Dodge, Mohammad Reza; Peyman, Gholam; Peyghambarian, Nasser N.

In: Optics Express, Vol. 19, No. 8, 11.04.2011, p. 7468-7479.

Research output: Contribution to journalArticle

Valley, Pouria ; Savidis, Nickolaos ; Schwiegerling, James T ; Dodge, Mohammad Reza ; Peyman, Gholam ; Peyghambarian, Nasser N. / Adjustable hybrid diffractive/refractive achromatic lens. In: Optics Express. 2011 ; Vol. 19, No. 8. pp. 7468-7479.
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