Title

Variable-focus liquid lens

Authors

Authors

H. W. Ren;S. T. Wu

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

MICROLENS ARRAY; FOCAL LENGTH; Optics

Abstract

A variable-focus liquid lens using a transparent flat cell is demonstrated. The top substrate has an aperture which is sealed with a thin elastic membrane on the outer surface and the bottom aperture is sealed on the inner surface of the bottom substrate. By applying a pressure to the outer membrane inward causes the liquid to redistribute and swell the inner membrane outward which, in turn, forms a plano-convex lens. To prove principles, a water lens with 5 mm aperture was fabricated. The resolution is better than 25 1p/mm and the response time is similar to 40 ms. Potential applications of such a lens for real-time active imaging are emphasized. (C) 2007 Optical Society of America

Journal Title

Optics Express

Volume

15

Issue/Number

10

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

5931

Last Page

5936

WOS Identifier

WOS:000246474300005

ISSN

1094-4087

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