Lens with adjustable focal length

Details Lens with adjustable focal length Lens with adjustable focal length

2006-09-20

2009-10-20

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

Fluid

Reexamination Certificate

active

07605984

ABSTRACT:
A lens device with an adjustable focal length is provided. The lens device includes a non-conductive liquid droplet, which is surrounded by air or immiscible liquids. The non-conductive liquid droplet is placed on a bottom plate. The bottom plate includes a set of first electrodes. The set of first electrodes is disposed in such a way that the set of first electrodes are capable of being selectively biased to respectively create a first voltage potential difference between the liquid droplet and each of the set of first electrodes. With the first voltage potential differences, a dielectric force is induced, and the profile of the non-conductive liquid droplet is adjustable. Thus, the focal length of the lens is adjustable.

REFERENCES:
patent: 5808593 (1998-09-01), Sheridon
patent: 2003/0006140 (2003-01-01), Vacca et al.
patent: 2003/0183525 (2003-10-01), Elrod et al.
patent: 2006/0042950 (2006-03-01), Sarrut
patent: 2008/0124252 (2008-05-01), Marchand et al.
patent: 2008/0310031 (2008-12-01), Mohr et al.
patent: WO-2006/084653 (2006-08-01), None
Cheng at al., Variable focus dielectric liquid droplet lens Express, vol. 14, No. 9, May 1, 2006.

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