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Proceedings Paper

Design and fabrication of tunable aspherical lens for spherical compound eye
Author(s): Zhenxian Zhan; Zhaolou Cao; Keyi Wang; Fang Guo
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Paper Abstract

A structural design of spherical compound eye is proposed. Aspherical lenses are fabricated on a spherical shell substrate and serve as channel lenses of the spherical compound eye. Each channel lens incepts lights of certain field of view (FOV) and focuses on a planar photodetector. The spherical compound eye can achieve a large FOV with merits of compact configuration, free assemblage and high capacity usage ratio. However, in this design the focal lengths of different channel lenses are nonuniform. To fabricate tunable channel lens, a method of fabricating tunable aspherical lenses based on shape manipulation by electrostatic field is proposed. The channel lens is fabricated by dropping Ultra- Violet (UV) curable polymer onto a double-concave glass substrate lens. An electrostatic field is employed to manipulate the shape of the liquid lens. The lens shape can be distorted from initial spherical to aspherical. The focal length of the aspherical lens varies as its shape being manipulated. When the in-situ measured focal length and focal spot images satisfy the requirement of a certain channel lens, the liquid aspherical lens can be cured to solid lens and can be used as the channel lens. The experiment results shows that by manipulating the shape of the liquid lens and controlling the liquid volume, the focal length of the lens can be manipulated between 5.5mm and 46.9mm, and keep small optical aberration. These indicate that the aspherical lenses fabricated by this method are tunable and are suitable as channel lenses for the spherical compound eye designed. And it is useful for fabricating spherical compound eye with large FOV.

Paper Details

Date Published: 6 October 2010
PDF: 7 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76552M (6 October 2010); doi: 10.1117/12.865153
Show Author Affiliations
Zhenxian Zhan, Univ. of Science and Technology of China (China)
Zhaolou Cao, Univ. of Science and Technology of China (China)
Keyi Wang, Univ. of Science and Technology of China (China)
Fang Guo, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Yoshiharu Namba; David D. Walker; Shengyi Li, Editor(s)

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