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Medical Imaging Systems Using Bio-Inspired Fluidic Lenses

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Abstract

We developed fluidic lens technologies for medical imaging. Fluidic lens produces adjustable focal distance via a change in the lens shape, similar to the crystalline lens in human eyes. Previous publications on fluidic lenses by our and other groups have shown that this tuning mechanism is highly efficient, producing about 5 times of the tuning range compared to systems made of conventional optics. For instance, within the capsular bag of human eye, crystalline lens produces 10–12 diopters of tuning range while a fixed-shape lens that moves along the optic axis can only produce a tuning range of 2 diopters, as demonstrated in cataract surgery. This unique property of fluidic lens proves to be highly valuable in surgical imaging where the space is constricted while the requirements for image quality and dynamic range are particularly stringent.

© 2011 Optical Society of America

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