Linear electrowetting-based actuator

Details Linear electrowetting-based actuator Linear electrowetting-based actuator

2011-01-04

2011-01-04

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Fluid

Reexamination Certificate

active

07864439

ABSTRACT:
Disclosed is an electrowetting-based apparatus comprising, in some embodiments, a plurality of immiscible fluids. The boundary between the fluids is made substantially planar with the application of select voltages to electrodes distributed around the cell containing the fluids. The electrodes are also adapted to alter the orientation of the substantially-planar fluid boundary, thereby allowing the fluid boundary to be steered in a determined direction. Light impinging on the boundary may therefore be refracted and redirected in a determined direction. Similarly, a reflective surface may be held in suspension at the fluid boundary, thereby providing a mirror with which to redirect impinging light. The electrowetting cell disclosed herein may be used as an optical switch, actuator, lens, concentrator, or like device.

REFERENCES:
patent: 4963471 (1990-10-01), Trout et al.
patent: 6844953 (2005-01-01), Reboa
patent: 2005/0113912 (2005-05-01), Feenstra et al.
patent: 2007/0139751 (2007-06-01), Kuiper et al.
patent: WO 2004051323 (2004-06-01), None

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