Focusing lens with electrowetting based macro switch

Details Focusing lens with electrowetting based macro switch Focusing lens with electrowetting based macro switch

2005-03-23

2009-11-03

Perkey, W B (Department: 2862)

Photography

Having variable focal length of camera objective

C359S665000, C359S666000

Reexamination Certificate

active

07613388

ABSTRACT:
The present invention provides a discretely adjustable lens (300) that is controllable by means of electrostatic or electrowetting forces. The lens provides two accurately reproducible and freely designable lens states that are defined by interfaces between one out of two fluids (120,121) and at least one lens face (155). Changing place of the fluids by means of electrostatic or electrowetting forces provides for switching between the lens states. The lens may, for example, provide a macro lens option in a camera lens arrangement.

REFERENCES:
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patent: 2002/0090168 (2002-07-01), Bartels
patent: 2003/0012483 (2003-01-01), Ticknor et al.
patent: 2004/0170422 (2004-09-01), Chauhan
patent: 2000356751 (2000-12-01), None
patent: WO 2003069380 (2003-08-01), None
patent: WO 2004027490 (2004-04-01), None
patent: WO 2004102251 (2004-11-01), None

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