Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 103, Issue 3, Pages 1834-1841Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.25404
Keywords
nanolayers; coextrusion; biomimetic; gradient refractive index
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The recognition that eye lenses in nature often employ a gradient refractive index to enhance the focusing power and to correct aberrations has motivated us to construct a synthetic lens using the layered concept encountered in biological lenses. The result is a highly flexible technology for the fabrication of gradient-refractive index lenses that is based on a method of polymer forced assembly. Polymeric nanolayered films with incremental differences in the refractive index are assembled according to a prescribed design and molded into the desired shape. The exceptional flexibility of the process lies in the wide range of lens shapes and index profiles that can be realized. A lens with any refractive index distribution can be achieved within the refractive index range of available coextrudable optical materials. (c) 2006 Wiley Periodicals, Inc.
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