Optical lens with variable focal length

Details Optical lens with variable focal length Optical lens with variable focal length

2011-01-04

2011-01-04

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S665000, C351S168000

Reexamination Certificate

active

07864440

ABSTRACT:
The invention concerns an optical lens comprising a cavity formed by two transparent windows and a peripheral frame positioned in between, said cavity containing first and second liquids, non miscible, forming an interface, said interface being movable by electrowetting on a wall of said peripheral frame by application of a voltage between first and second electrodes, wherein said wall has a non symmetrical revolution surface, the geometrical shape of which is calculated such that said interface is of a predetermined shape, for example substantially spherical, for at least one value of said voltage.

REFERENCES:
patent: 4477158 (1984-10-01), Pollock et al.
patent: 2004/0218283 (2004-11-01), Nagaoka et al.
patent: 2004/0227063 (2004-11-01), Viinikanoja
patent: 91/17463 (1991-11-01), None
patent: 96/38744 (1996-12-01), None
patent: 00/58763 (2000-10-01), None
patent: 2004/049927 (2004-06-01), None
patent: 2005/003842 (2005-01-01), None
patent: 2005/088388 (2005-09-01), None
patent: 2006/027522 (2006-03-01), None
patent: 2006/092804 (2006-09-01), None
International Search Report w/translation from PCT/EP2007/062774 dated Feb. 21, 2008 (3 pages).

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