Abstract: The present invention relates to an electrowetting-based variable-focus lens comprising an enclosure with at least two components, an arrangement of first and second immiscible liquids (5, 6) contained in said enclosure, wherein the liquids have different refractive indices and are in contact over a moveable refractive optical interface, a first electrode associated with one of said liquids, the electrode comprising a film (21, 22; 23, 24) of conducting material extending from a region internal to the enclosure to a region external to the enclosure, wherein the conducting material forms a bonding element between said components of the enclosure.

Abstract: The invention relates to a variable-focus lens comprising two opposing walls (21, 22) which are orthogonal to the axis of the lens and which define a space containing an isolating liquid (31) on the first wall (22) and a conductive liquid (32) which covers the isolating liquid and which comes into contact with the second wall (21). The surface (24) of the first wall (22) has high wettability for the isolating liquid and low wettability for the conductive liquid, while the surface (23) of the second wall (21) has high wettability for the conductive liquid and low wettability for the isolating liquid.

Abstract: A lens assembly of variable focal length comprises two transparent plates (24, 38) at least partially facing each other and parallel to one another and delimiting, at least in part, an internal volume (15) containing two non-miscible liquids having different optical indices. The lens comprises an elastic element (36) capable of deforming in response to a change in pressure of the liquids, in such a way as to substantially maintain the optical properties of the lens assembly, e.g., in order to maintain the parallelism of the two transparent plates.

Abstract: The invention relates to a variable-focus lens (60) for focusing light rays in light paths passing through the lens along an optical axis (?). The lens comprises an arrangement of first and second immiscible liquids (67, 68) that have different refractive indices and are in contact over a moveable refractive optical interface (69), a volume of gas (72) in contact with one of said liquids, and a retention measure (70, 74) for keeping the volume of gas away from the light paths of the light rays passing through the lens for focusing.

Abstract: The present invention relates to a method of manufacturing an electrowetting-based variable-focus lens, comprising: (a) providing an enclosure having a cavity (17) and at least one channel (27, 28; 59) communicating at one end with the cavity and at the other end emerging at the exterior surface of the lens; (b) filling the cavity with first and second liquids (44, 47) that are immiscible and of different refractive indices via the channel; and (c) hermetically scaling the channel.

Abstract: The invention relates to a variable-focus lens comprising two opposing walls (21, 22) which are which define a space containing an isolating liquid (31) on the first wall (22) and a conductive liquid (32) which covers the isolating liquid and which comes into contact with the second wall (21). The surface (24) of the first wall (22) has high wettability for the isolating liquid and low wettability for the conductive liquid, while the surface (23) of the second wall (21) has high wettability for the conductive liquid and low wettability for the isolating liquid.

Abstract: A variable focus lens comprises a chamber containing a conductive liquid (5) and an insulating liquid (4) of different refractive indices, the surface of contact between the two liquids forming a deformable refractive surface (6) whose periphery is caused to move along the walls of a housing under the effect of an electric voltage (V). The housing comprises an upper portion (16) inclined relative to a plane perpendicular to the optical axis (?) of the lens, a lower portion (34, 48, 52) more inclined than the upper portion and a zone of junction (B?) between the upper and lower portions, playing the role of a stop for the deformable refractive interface.

Abstract: The invention relates to a variable-focus lens (60) for focussing light rays in light paths passing through the lens along an optical axis (?). The lens comprises an arrangement of first and second immiscible liquids (67, 68) that have different refractive indices and are in contact over a moveable refractive optical interface (69), a volume of gas (72) in contact with one of said liquids, and a retention measure (70, 74) for keeping the volume of gas away from the light paths of the light rays passing through the lens for focussing.

Abstract: A variable focus lens comprises a chamber containing a conductive liquid (5) and an insulating liquid (4) of different refractive indices, the surface of contact between the two liquids forming a deformable refractive surface (6) whose periphery is caused to move along the walls of a housing under the effect of an electric voltage (V). The housing comprises an upper portion (16) inclined relative to a plane perpendicular to the optical axis (?) of the lens, a lower portion (34, 48, 52) more inclined than the upper portion and a zone of junction (B?) between the upper and lower portions, playing the role of a stop for the deformable refractive interface.

Abstract: A lens assembly of variable focal length comprises two transparent plates (24, 38) at least partially facing each other and parallel to one another and delimiting, at least in part, an internal volume (15) containing two non-miscible liquids having different optical indices. The lens comprises an elastic element (36) capable of deforming in response to a change in pressure of the liquids, in such a way as to substantially maintain the optical properties of the lens assembly, e.g., in order to maintain the parallelism of the two transparent plates.

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.

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.