Patent
Lens with variable focus
Bruno Berge,Jerome Peseux +1 more
- 07 Oct 1998
291
TL;DR: In this paper, a variable focus lens with variable focus is presented, where a drop of a second liquid is provided on a first surface zone of the chamber wall, and means for positioning said drop in inoperative position on said zone, comprising electrical means for applying a voltage stress between the conductive liquid and an electrode arranged on the wall second surface, and centering means for maintaining the centering and controlling the shape of the drop edge while a voltage is being applied by electrowetting.
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Abstract: The invention concerns a lens with variable focus comprising a chamber (12) filled with a first liquid (13), a drop of a second liquid (11) being provided on a first surface zone of the chamber wall, wherein the chamber wall is made of an insulating material, the first liquid is conductive, the second liquid insulating, the first and second liquid are immiscible, with different optical indices and substantially of the same density. Means are provided for positioning said drop in inoperative position on said zone, comprising electrical means for applying a voltage stress between the conductive liquid and an electrode (16) arranged on said wall second surface, and centering means for maintaining the centering and controlling the shape of the drop edge while a voltage is being applied by electrowetting.
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Citations
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References
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Bruno Berge
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TL;DR: In this article, it was shown that the effective solid-liquid interfacial energy is −1/2 (ee 0 /e)V 2, and hydrophobic insulator surfaces become reversibly hydrophilic.
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Patent
Electrocapillary color display sheet
Nicholas K. Sheridon
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TL;DR: In this paper, an electrocapillary color display sheet is disclosed which utilizes three spaced apart and parallel sheets in which the medial sheet has a plurality of sets of at least two reservoirs.
114
Patent
Control element having liquid layer attainable to geometrically uneven state in response to electrical signal
Tadao Kohashi,Toshiharu Kurosawa +1 more
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TL;DR: In this article, a support member of a solid material, a liquid material in intimate contact with and supported by the support member and an electrical means for creating an electric field having an electric vector in a direction parallel to the interface between the two materials to cause an electroosmotic movement of a portion of the liquid material and a resulting patterned unevenness of the configuration of the fluid.
37
Patent
Variable focus lens device
Tomonari Horikiri,Hiroyuki Kitayama,Oyama Junji,Kyoji Yano,宏之 北山,智成 堀切,淳史 大山,亨治 矢野 +7 more
- 02 Jun 1999
TL;DR: In this paper, a variable focus lens device was proposed to provide a variable-focus lens device in which the surface form of the lens can be stably maintained by suppressing the changes in the lens surface form against the external force having an effect on the liquid lens.
34
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