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Proceedings Paper

Miniaturized unified imaging system using bio-inspired fluidic lens
Author(s): Frank S. Tsai; Sung Hwan Cho; Wen Qiao; Nam-Hyong Kim; Yu-Hwa Lo
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Paper Abstract

Miniaturized imaging systems have become ubiquitous as they are found in an ever-increasing number of devices, such as cellular phones, personal digital assistants, and web cameras. Until now, the design and fabrication methodology of such systems have not been significantly different from conventional cameras. The only established method to achieve focusing is by varying the lens distance. On the other hand, the variable-shape crystalline lens found in animal eyes offers inspiration for a more natural way of achieving an optical system with high functionality. Learning from the working concepts of the optics in the animal kingdom, we developed bio-inspired fluidic lenses for a miniature universal imager with auto-focusing, macro, and super-macro capabilities. Because of the enormous dynamic range of fluidic lenses, the miniature camera can even function as a microscope. To compensate for the image quality difference between the central vision and peripheral vision and the shape difference between a solid-state image sensor and a curved retina, we adopted a hybrid design consisting of fluidic lenses for tunability and fixed lenses for aberration and color dispersion correction. A design of the world's smallest surgical camera with 3X optical zoom capabilities is also demonstrated using the approach of hybrid lenses.

Paper Details

Date Published: 11 September 2008
PDF: 10 pages
Proc. SPIE 7061, Novel Optical Systems Design and Optimization XI, 70610N (11 September 2008); doi: 10.1117/12.801922
Show Author Affiliations
Frank S. Tsai, Univ. of California, San Diego (United States)
Sung Hwan Cho, Univ. of California, San Diego (United States)
Wen Qiao, Univ. of California, San Diego (United States)
Zhejiang Univ. (China)
Nam-Hyong Kim, Cymer, Inc. (United States)
Yu-Hwa Lo, Univ. of California, San Diego (United States)

Published in SPIE Proceedings Vol. 7061:
Novel Optical Systems Design and Optimization XI
R. John Koshel; James D. Moore Jr.; David H. Krevor; G. Groot Gregory, Editor(s)

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