Variable focal lens

Details Variable focal lens Variable focal lens

2007-07-17

2007-07-17

Spector, David (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S665000

Reexamination Certificate

active

11314081

ABSTRACT:
A variable focus lens comprises a chamber containing a conductive liquid (5) and an insulating liquid (4) of different refractive indices, the surface of contact between the two liquids forming a deformable refractive surface (6) whose periphery is caused to move along the walls of a housing under the effect of an electric voltage (V). The housing comprises an upper portion (16) inclined relative to a plane perpendicular to the optical axis (Δ) of the lens, a lower portion (34, 48, 52) more inclined than the upper portion and a zone of junction (B′) between the upper and lower portions, playing the role of a stop for the deformable refractive interface.

REFERENCES:
patent: 6369954 (2002-04-01), Berge et al.
patent: 6823198 (2004-11-01), Kobayashi
patent: 7002737 (2006-02-01), Akiyama et al.
patent: 2005/0002113 (2005-01-01), Berge
patent: 1 166 157 (2003-07-01), None

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