Abstract: Various embodiments disclosed herein include an optical module. The optical module may include a deformable lens and an actuator configured to be deflectable to cause a change in the shape of the deformable lens to alter light passing through the optical module. In various examples, the optical module may include a stop structure configured to mechanically stop the actuator from deflecting beyond a threshold deflection in at least one direction. In some cases, the stop structure may be used for calibration purposes. Additionally, or alternatively, the stop structure may be configured to define an aperture stop that limits an amount of light that passes through the optical module. Furthermore, in some embodiments, the stop structure may be configured to hide the actuator when the optical module is viewed in plan.

Abstract: An optical device for the stabilization of images, including a first deformable membrane and a second deformable membranes, a support to which a respective peripheral anchoring area of each of said membranes is connected, and a constant volume of fluid enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. The optical device also includes: a first actuation device of a region of the first membrane located between the peripheral anchoring area and a central part of the first membrane; and a second actuation device of a region of the second membrane located between the peripheral anchoring area and a central part of the second membrane. A control means of the first and second actuation devices is configured, from a rest position where the first and second actuation devices are inactive, to have multiple operating modes to apply respective actuation voltage to the first actuation device or the second actuation device.

Abstract: An optical device with variable aperture, including a deformable membrane having a central optical area, a support to which a peripheral anchoring area of said membrane is connected, a first cavity filled with a constant volume of a first transparent fluid in a determined range of wavelengths, said cavity being delimited at least in part by a first face of said membrane and a wall of the support. The optical device also includes at least one actuation device of a region of the membrane located between the peripheral anchoring area and the central optical area of the membrane, configured to bend said region of the membrane by application of electrical actuation voltage so as to displace some of the volume of the first fluid towards the center or towards the periphery of the first cavity, said displacement of fluid being intended to deform the central area of the membrane.

Abstract: An optical device with a deformable membrane (2) including an anchor area (2.3) on a support (1) entrapping a liquid or gas fluid, a central area (2.1) reversibly deformable from a rest position, actuating means for moving the fluid (4) biasing the membrane (2) into an intermediate area between the anchor area (2.3) and the central area (2.1), the actuating means include a piezoelectric continuous crown accommodating several actuators (5.1), this crown surrounding the central area (2.1), the actuating means (5) being anchored to the membrane (2) in at least the intermediate area (2.2), the actuating means (5) and the membrane (2) to which they are anchored, forming at least one piezoelectric bimorph (B), the actuating means (5) radially contracting or extending upon actuation so as to generate a movement of said fluid (4) from the intermediate area (2.2) to the central area (2.1) of the membrane (2) or vice versa, aiming at deforming the central area (2.1) with respect to its rest position.

Abstract: An optical device has a deformable membrane and a support to which a peripheral anchoring area of said membrane is connected. The optical device further includes a cavity filled with a constant volume of fluid, the cavity being delimited by the membrane, a base extending substantially parallel to the membrane and a wall of the support extending between the base and the membrane. The optical device further includes an actuation device of an area of the membrane located between the peripheral anchoring area and a central part of the membrane, configured to bend by application of electrical actuation voltage so as to move some of the volume of fluid located in a flow region located between the actuation area of the membrane and the base of the cavity. The optical device also includes a heating element adapted to locally heat the fluid in the flow region.

Abstract: The invention relates to an autofocus camera (1) comprising: —an image sensor (10), —an optical block (20) comprising a plurality of lenses with fixed focal length, —an optical device (30) with variable focal length comprising: •a deformable membrane (301), •a support (302) to which a peripheral anchoring area (301c) of said membrane is connected, •a cavity (303) filled with a constant volume of fluid, said cavity being delimited at least in part by said membrane (301) and a support wall (302), •an actuation device (304) of a region (301b) of the membrane located between the peripheral anchoring area (301c) and a central part (301a) of the membrane, configured to bend by application of electrical actuation voltage so as to displace some of the fluid volume towards the center or towards the periphery of the cavity (303), wherein at least one region distinct from the central part (301a) and of the actuation region (301b) of the membrane is stressed mechanically permanently so as to cause permanent deformation o

Abstract: An optical device with variable aperture, including a deformable membrane having a central optical area, a support to which a peripheral anchoring area of said membrane is connected, a first cavity filled with a constant volume of a first transparent fluid in a determined range of wavelengths, said cavity being delimited at least in part by a first face of said membrane and a wall of the support. The optical device also includes at least one actuation device of a region of the membrane located between the peripheral anchoring area and the central optical area of the membrane, configured to bend said region of the membrane by application of electrical actuation voltage so as to displace some of the volume of the first fluid towards the center or towards the periphery of the first cavity, said displacement of fluid being intended to deform the central area of the membrane.

Abstract: An optical device for the stabilization of images, including a first deformable membrane and a second deformable membranes, a support to which a respective peripheral anchoring area of each of said membranes is connected, and a constant volume of fluid enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. The optical device also includes: a first actuation device of a region of the first membrane located between the peripheral anchoring area and a central part of the first membrane; and a second actuation device of a region of the second membrane located between the peripheral anchoring area and a central part of the second membrane. A control means of the first and second actuation devices is configured, from a rest position where the first and second actuation devices are inactive, to have multiple operating modes to apply respective actuation voltage to the first actuation device or the second actuation device.

Abstract: An optical device having variable focal length may include a deformable membrane, a support to which a peripheral anchoring area of said membrane is connected, and a cavity filled with a constant volume of fluid. The cavity being delimited by the membrane, a base opposite the membrane and a wall of the support extending between the base and the membrane. The optical device further includes an actuation device of a region of the membrane located between the peripheral anchoring area and a central part of the membrane, configured to bend said membrane by application of electrical actuation voltage so as to displace some of the volume of fluid. The membrane comprises a stiffening structure comprising cells which delimit, in the central part of said membrane, at least two deformable regions each constituting a diopter of a respective elementary optical system, each elementary optical system comprising said respective deformable region of the membrane, the fluid and the base of the cavity.

Abstract: An optical device with variable aperture, including a deformable membrane having a central optical area, a support to which a peripheral anchoring area of said membrane is connected, a first cavity filled with a constant volume of a first transparent fluid in a determined range of wavelengths, said cavity being delimited at least in part by a first face of said membrane and a wall of the support. The optical device also includes at least one actuation device of a region of the membrane located between the peripheral anchoring area and the central optical area of the membrane, configured to bend said region of the membrane by application of electrical actuation voltage so as to displace some of the volume of the first fluid towards the center or towards the periphery of the first cavity, said displacement of fluid being intended to deform the central area of the membrane.

Abstract: An optical device for the stabilization of images, including a first deformable membrane and a second deformable membranes, a support to which a respective peripheral anchoring area of each of said membranes is connected, and a constant volume of fluid enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. The optical device also includes: a first actuation device of a region of the first membrane located between the peripheral anchoring area and a central part of the first membrane; and a second actuation device of a region of the second membrane located between the peripheral anchoring area and a central part of the second membrane. A control means of the first and second actuation devices is configured, from a rest position where the first and second actuation devices are inactive, to have multiple operating modes to apply respective actuation voltage to the first actuation device or the second actuation device.

Abstract: An optical device with focal length variation including a first deformable membrane, a second deformable membrane, and a support to which a respective peripheral anchoring area of each of said membranes is connected. A constant volume of fluid is enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. An actuation device of a region of the first membrane located between the anchoring area and a central part of the first membrane, configured to deform by application of electrical actuation voltage in a single direction of deflection to displace at least a portion of the fluid volume, said displacement of fluid being likely to cause deformation of the central part of the first membrane based on application of an electrical actuation voltage to the actuation device.

Abstract: The invention relates to an autofocus camera (1) comprising:—an image sensor (10),—an optical block (20) comprising a plurality of lenses with fixed focal length,—an optical device (30) with variable focal length comprising:•a deformable membrane (301),•a support (302) to which a peripheral anchoring area (301c) of said membrane is connected,•a cavity (303) filled with a constant volume of fluid, said cavity being delimited at least in part by said membrane (301) and a support wall (302),•an actuation device (304) of a region (301b) of the membrane located between the peripheral anchoring area (301c) and a central part (301a) of the membrane, configured to bend by application of electrical actuation voltage so as to displace some of the fluid volume towards the centre or towards the periphery of the cavity (303), wherein at least one region distinct from the central part (301a) and of the actuation region (301b) of the membrane is stressed mechanically permanently so as to cause permanent deformation of the c

Abstract: An optical device has a deformable membrane and a support to which a peripheral anchoring area of said membrane is connected. The optical device further includes a cavity filled with a constant volume of fluid, the cavity being delimited by the membrane, a base extending substantially parallel to the membrane and a wall of the support extending between the base and the membrane. The optical device further includes an actuation device of an area of the membrane located between the peripheral anchoring area and a central part of the membrane, configured to bend by application of electrical actuation voltage so as to move some of the volume of fluid located in a flow region located between the actuation area of the membrane and the base of the cavity. The optical device also includes a heating element adapted to locally heat the fluid in the flow region and/or in a region of the cavity facing the central part of the membrane.

Abstract: An optical device with a deformable membrane (2) including an anchor area (2.3) on a support (1) entrapping a liquid or gas fluid, a central area (2.1) reversibly deformable from a rest position, actuating means for moving the fluid (4) biasing the membrane (2) into an intermediate area between the anchor area (2.3) and the central area (2.1), the actuating means include a piezoelectric continuous crown accommodating several actuators (5.1), this crown surrounding the central area (2.1), the actuating means (5) being anchored to the membrane (2) in at least the intermediate area (2.2), the actuating means (5) and the membrane (2) to which they are anchored, forming at least one piezoelectric bimorph (B), the actuating means (5) radially contracting or extending upon actuation so as to generate a movement of said fluid (4) from the intermediate area (2.2) to the central area (2.1) of the membrane (2) or vice versa, aiming at deforming the central area (2.1) with respect to its rest position.

Abstract: An optical device having variable focal length may include a deformable membrane, a support to which a peripheral anchoring area of said membrane is connected, and a cavity filled with a constant volume of fluid. The cavity being delimited by the membrane, a base opposite the membrane and a wall of the support extending between the base and the membrane. The optical device further includes an actuation device of a region of the membrane located between the peripheral anchoring area and a central part of the membrane, configured to bend said membrane by application of electrical actuation voltage so as to displace some of the volume of fluid. The membrane comprises a stiffening structure comprising cells which delimit, in the central part of said membrane, at least two deformable regions each constituting a dioptre of a respective elementary optical system, each elementary optical system comprising said respective deformable region of the membrane, the fluid and the base of the cavity.

Abstract: An optical device for the stabilization of images, including a first deformable membrane and a second deformable membranes, a support to which a respective peripheral anchoring area of each of said membranes is connected, and a constant volume of fluid enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. The optical device also includes: a first actuation device of a region of the first membrane located between the peripheral anchoring area and a central part of the first membrane; and a second actuation device of a region of the second membrane located between the peripheral anchoring area and a central part of the second membrane. A control means of the first and second actuation devices is configured, from a rest position where the first and second actuation devices are inactive, to have multiple operating modes to apply respective actuation voltage to the first actuation device or the second actuation device.

Abstract: An optical device with focal length variation including a first deformable membrane, a second deformable membrane, and a support to which a respective peripheral anchoring area of each of said membranes is connected. A constant volume of fluid is enclosed between the first and the second membrane, said fluid producing mechanical coupling of said first and second membranes. An actuation device of a region of the first membrane located between the anchoring area and a central part of the first membrane, configured to deform by application of electrical actuation voltage in a single direction of deflection to displace at least a portion of the fluid volume, said displacement of fluid being likely to cause deformation of the central part of the first membrane based on application of an electrical actuation voltage to the actuation device.

Abstract: An optical device with a deformable membrane including an anchor area on a support entrapping a liquid or gas fluid, a central area reversibly deformable from a rest position, actuating means for moving the fluid biasing the membrane into an intermediate area between the anchor area and the central area, the actuating means include a piezoelectric continuous crown accommodating several actuators, this crown surrounding the central area, the actuating means being anchored to the membrane in the intermediate area, the actuating means and the membrane to which they are anchored, forming at least one piezoelectric bimorph, the actuating means radially contracting or extending upon actuation to generate a movement of said fluid from the intermediate area to the central area of the membrane or vice versa, aiming at deforming the central area with respect to its rest position.

Abstract: An optical device with variable aperture, including a deformable membrane having a central optical area, a support to which a peripheral anchoring area of said membrane is connected, a first cavity filled with a constant volume of a first transparent fluid in a determined range of wavelengths, said cavity being delimited at least in part by a first face of said membrane and a wall of the support. The optical device also includes at least one actuation device of a region of the membrane located between the peripheral anchoring area and the central optical area of the membrane, configured to bend said region of the membrane by application of electrical actuation voltage so as to displace some of the volume of the first fluid towards the center or towards the periphery of the first cavity, said displacement of fluid being intended to deform the central area of the membrane.