Proposal of human eye's crystalline lens-like variable focusing lens

The variable focusing lens is designed and fabricated like the human eye's crystalline lens. The lens consists of glass diaphragm, microchannels and working fluid. The chamber between a glass diaphragm and a substrate is filled with the working fluid. Refractive index matching oil such as silic...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 1999, Vol.78 (1), p.48-53
Main Authors: Ahn, Si-Hong, Kim, Yong-Kweon
Format: Article
Language:English
Subjects:
Focal plane
Glass diaphragm
Lens
Opto-fluidics
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Summary:The variable focusing lens is designed and fabricated like the human eye's crystalline lens. The lens consists of glass diaphragm, microchannels and working fluid. The chamber between a glass diaphragm and a substrate is filled with the working fluid. Refractive index matching oil such as silicone oil can be used as working fluid, which is pumped into or out of the chamber through the microchannel. The curvature of the lens can change due to the oil pressure built by micropump outside. The change of curvature of the lens produces the focal plane shift. In addition, both convex lens and concave lens can be realized by pressurized working oil. Commercial micropump is used for the test of a fabricated variable focusing lens. The designed variable focusing lens has a square diaphragm with side length of 10 mm. Thickness of the glass diaphragm is 40 μm.
ISSN:0924-4247
1873-3069
DOI:10.1016/S0924-4247(99)00203-4