Lens unit and image taking apparatus

Details Lens unit and image taking apparatus Lens unit and image taking apparatus

2007-02-20

2007-02-20

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

Fluid

C348S345000, C348S349000

Reexamination Certificate

active

11209658

ABSTRACT:
Mutually non-mixable light-transmitting insulative liquid and conductive liquid having different refractive indices are accommodated in a light-transmitting liquid container forming a lens unit. The lens unit includes a first electrode which is in contact with the conductive liquid, one or more second electrodes which are insulated from the conductive liquid, and a correcting section which controls voltage to be applied between the first electrode and at least one of the second electrodes in accordance with a gravity direction, thereby changing a shape of an interface between the insulative liquid and the conductive liquid to correct distortion of the interface caused by the gravity.

REFERENCES:
patent: 6449081 (2002-09-01), Onuki et al.
patent: 2006/0193058 (2006-08-01), Ootsuka et al.
patent: 2000-347005 (2000-12-01), None
patent: 2001-519539 (2003-10-01), None
patent: WO 99/18456 (1999-04-01), None
Philips' Fluid Lenses, in Digital Photography Review (dpreview.com), Mar. 3, 2004.

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