Lens with variable focus

Details Lens with variable focus Lens with variable focus

2007-10-09

2007-10-09

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S665000, C359S291000, C349S200000

Reissue Patent

active

10819888

ABSTRACT:
A variable focus lens comprising a chamber (12) filled with a first liquid (13), a drop of a second liquid (11) being disposed at rest on a region of a first surface of an insulating wall of the chamber, the first and second liquids being non miscible, of different optical indexes and of substantially same density. The first liquid is conductive and the second liquid is insulating. The lens further comprises means for applying a voltage between the conductor liquid and an electrode (16) placed on the second surface of said wall; and centering means for maintaining the centering of the edge of the drop while the voltage is applied and for controlling the shape thereof.

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