Variable refractive surface

Details Variable refractive surface Variable refractive surface

2004-05-10

2008-03-11

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S665000

Reexamination Certificate

active

07342725

ABSTRACT:
An optical element (200; 300) for providing a variable refractive surface. The element comprises a chamber (215) defined by at least one side wall (270), with an optical axis (90) extending through the chamber (215). The chamber (215) contains a first fluid (220) and a second fluid (230) in contact over a meniscus (225) extending transverse the optical axis (90). The perimeter of the meniscus (225) is constrained by said side wall (270). The fluids (220, 230) are substantially immiscible and have different indices of refraction. A first electrowetting electrode (242; 243) is arranged to act on at least a portion of the meniscus perimeter constrained by said side wall (270). A second electrowetting electrode (280) extends through the meniscus (225).

REFERENCES:
patent: 6369954 (2002-04-01), Berge et al.
patent: 2002/0159156 (2002-10-01), Wohlstadter et al.
patent: 2004/0174610 (2004-09-01), Aizenberg et al.
patent: 1168055 (2002-01-01), None
patent: 1293807 (2003-03-01), None

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