Abstract: The invention relates to a lens, comprising a container (100) defining a volume (V) which is filled with a transparent liquid (2), wherein the container (10) comprises a transparent and elastically deformable membrane (20) and a rigid member (30), wherein the membrane (20) and the rigid member (30) delimit said volume (V), and a lens shaping element (200) that contacts the membrane (20) and defines an area (21) of said membrane (20), which area (21) has an adjustable curvature for adjusting the focal length of the lens (1). According to the invention, the lens (1) is configured to compensate a thermal expansion of the liquid (2) and/or a change of the refractive index of the liquid (2) due to an increased temperature of the liquid (2) in order to reduce an unwanted thermally induced change of the focal length of the lens (1).

Abstract: The invention relates to an optical device (1) for enhancing the resolution of an image or for reducing speckle noise.

Abstract: The invention relates to an arrangement for a tunable lens, which comprises a deformable lens shaping element (1) with a central axis (2) and a radial axis (5) and with a perimetrical edge (3) that extends about the central axis (2) and wherein the perimetrical edge (3) is designed to interact and mechanically deform a membrane of the tunable lens in order to change at least one optical property of the tunable lens. The arrangement further comprises a moveable adjustment element (13), which is mechanically coupled to the lens shaping element (1) by a bearing, wherein the bearing limits an axial translational degree of freedom (7), such that an axial force is transmittable between the lens shaping element (1) and the adjustment element (13) parallel to the central axis (2) and wherein the bearing provides a radial rotational degree of freedom (12) for a relative rotation between the lens shaping element (1) and the adjustment element (13) about the radial axis (5).

Abstract: The invention relates to a lens, comprising a container (100) defining a volume (V) which is filled with a transparent liquid (2), wherein the container (10) comprises a transparent and elastically deformable membrane (20) and a rigid member (30), wherein the membrane (20) and the rigid member (30) delimit said volume (V), and a lens shaping element (200) that contacts the membrane (20) and defines an area (21) of said membrane (20), which area (21) has an adjustable curvature for adjusting the focal length of the lens (1). According to the invention, the lens (1) is configured to compensate a thermal expansion of the liquid (2) and/or a change of the refractive index of the liquid (2) due to an increased temperature of the liquid (2) in order to reduce an unwanted thermally induced change of the focal length of the lens (1).

Abstract: The invention relates to a tunable optical component (100) comprising a liquid chamber (101), a flexible membrane (1), a shaping element (3), and an actuator (2), wherein the liquid chamber (101) is filled with a liquid (102), the membrane (1) delimits the liquid chamber (101), the membrane (1) is attached to the shaping element (3), the shaping element (3) has a ring shape, wherein the shaping element (3) surrounds an optically active area (10) of the membrane (1), the actuator (2) comprises multiple piezo units (20), the piezo unit (20) is coupled to a counterpart (203) in a releasable force-fitting manner, the piezo unit (20) is arranged to move the counterpart (203), and wherein the relative movement of the counterpart (203) and the piezo unit (20) results in a movement of the liquid (102), which causes a change of an optical property of the optically active area (10).

Abstract: The invention relates to an optical device (1), comprising: at least a first lens (100) having an adjustable focal length, wherein the first lens (100) comprises a container (2) comprising at least one reservoir volume (90) and a lens volume (91) which are in flow communication via a channel (92) and filled with a transparent fluid (F), and wherein the container (2) comprises a stretchable transparent membrane (21) and a transparent lens shaper (22) that is immersed in the fluid (F) and connected to the membrane (21), so that the lens shaper (22) defines a curvature-adjustable area (23) of the membrane (21), and wherein the container (2) comprises a transparent back wall (30) facing the membrane (21), wherein the fluid (F) is arranged between the membrane (20) and the back wall (30). According to the present invention, the at least one reservoir volume (90) is covered by a wall (21), wherein a plunger (94) for interacting with an actuator part (e.g.

Abstract: The present invention relates to a method for producing at least one optical component (1), comprising the steps of: a) Providing at least one cavity (2), wherein the at least one cavity (2) is delimited on a first side by a surface (3a) of a first membrane portion (3), wherein a shape of the first membrane portion (3) is adjustable; b) Filling a material (4) into the at least one cavity (2) for forming at least one optical component (1), such that the material (4) contacts a surface (3a) of the first membrane portion (3); c) Adjusting the shape of the first membrane portion (3); d) Curing the material (4) filled into the at least one cavity (2) so that the material (4) forms a first interface (e.g. a first optical surface) (1a) of the at least one optical component (1), which first interface (1a) comprises a shape defined by a shape of the surface (3a) of the first membrane portion (3).

Abstract: The present invention relates to an optical device (1), comprising: a container (2) forming a fluidic lens, the container (2) comprising a transparent and elastically expandable membrane (10), a transparent optical element (20) facing the membrane (10), and a wall member (3), wherein the optical element (20) and the membrane (10) are connected to the wall member, and wherein said container encloses a volume (V) that is filled with a fluid (F), a lens shaping part (11) that is in contact with said membrane (10) for defining a curvature adjustable area (10c) of the membrane (10), which area (10c) faces said optical element (20), and a circumferential lens barrel (50) extending in an axial direction, which lens barrel (50) surrounds an opening (50c) in which at least one rigid lens (51) is arranged that is held by the lens barrel (50), and a voice coil motor (5) that is designed to move the lens shaping part (11) along an axial direction (z) with respect to said container (2), so as to adjust a curvature of said

Abstract: An example head-mounted display device includes a light projector, an optical assembly arranged to direct light from a light projector to a user, and an actuator module. The optical assembly includes a variable focus lens assembly including a rigid refractive component, a shaper ring defining an aperture, and a flexible lens membrane between the shaper ring and the rigid refractive component and covering the aperture. The refractive component, the shaper ring, and the lens membrane are arranged along an axis. The refractive component and the lens membrane define a chamber containing a volume of fluid. The actuator module is configured to adjust an optical power of the variable focus lens by moving the shaper ring relative to the refractive component along the axis, such that a curvature of the lens membrane in the aperture is modified.

Abstract: The present invention relates to an optical device (1), comprising: a container (2) forming a fluidic lens, the container (2) comprising a transparent and elastically expandable membrane (10), a transparent optical element (20) facing the membrane (10), and a wall member (3), wherein the optical element (20) and the membrane (10) are connected to the wall member, and wherein said container encloses a volume (V) that is filled with a fluid (F), a lens shaping part (11) that is in contact with said membrane (10) for defining a curvature adjustable area (10c) of the membrane (10), which area (10c) faces said optical element (20), and a circumferential lens barrel (50) extending in an axial direction, which lens barrel (50) surrounds an opening (50c) in which at least one rigid lens (51) is arranged that is held by the lens barrel (50), and a voice coil motor (5) that is designed to move the lens shaping part (11) along an axial direction (z) with respect to said container (2), so as to adjust a curvature of said

Abstract: Tunable optical device comprising an actuator, a transmission element, a mount and an optical component, wherein the optical component comprises a window member and a ring member, wherein an optical property of the optical component is adjustable by altering the position of the ring member with respect to the window member. The actuator is arranged to generate an actuation force along an axial direction, the transmission element is arranged to transmit the actuation force from the actuator to the optical component, the transmitted actuation force alters the position of the ring member with respect to the window member. The transmission element comprises a bridge portion and a meander portion, wherein the bridge portion couples the ring member to the actuator and the window member is attached to the mount, or the bridge portion couples the window member to the actuator and the ring member is attached to the mount.

Abstract: The invention relates to an optical device (1), comprising: at least a first lens 100) having an adjustable focal length, wherein the first lens (100) comprises a container (2) that defines a volume (V) which is filled with a transparent fluid (F), and wherein the container (2) comprises a front wall (20), which front wall (20) comprises a transparent membrane (21) that is flexible and stretchable and a transparent lens shaper (22) that is immersed in the fluid (F) and connected to the membrane (21), so that the lens shaper (22) defines a curvature-adjustable area (23) of the membrane (21), and wherein the container (2) comprises a back wall (30) facing the front wall (20), wherein the fluid (F) is arranged between the front wall (20) and the back wall (30), and wherein the back wall (30) forms a lens.

Abstract: Tunable optical device comprising an optical element, an actuator and a transmission unit, wherein the transmission unit comprises a first fiber, the first fiber is arranged to transmit a tensile force from the actuator to the optical element, and the tensile force result in a change of an optical property of the optical element.

Abstract: An example head-mounted display device includes a light projector, an optical assembly arranged to direct light from a light projector to a user, and an actuator module. The optical assembly includes a variable focus lens assembly including a rigid refractive component, a shaper ring defining an aperture, and a flexible lens membrane between the shaper ring and the rigid refractive component and covering the aperture. The refractive component, the shaper ring, and the lens membrane are arranged along an axis. The refractive component and the lens membrane define a chamber containing a volume of fluid. The actuator module is configured to adjust an optical power of the variable focus lens by moving the shaper ring relative to the refractive component along the axis, such that a curvature of the lens membrane in the aperture is modified.

Abstract: Tunable lens (1) comprising a fluidic volume (2), a flexible membrane (3) and a shaping element (4), wherein the membrane (3) delimits the fluidic volume (2) on one side, the shaping element (4) is attached to the membrane (3), the shaping element (4) surrounds an optically active region of the membrane, the shaping element (4) is arranged to alter optical properties of the tunable lens (1) by deflection, in top view the shaping element (4) has a non-circular contour (40), wherein the contour (40) extends within an imaginary circumcircle (10), and the amount of deflection of the shaping element (4) is proportional to a lateral distance of the contour (40) to the circumcircle (10).

Abstract: The invention relates to a lens, comprising a container (100) defining a volume (V) which is filled with a transparent liquid (2), wherein the container (10) comprises a transparent and elastically deformable membrane (20) and a rigid member (30), wherein the membrane (20) and the rigid member (30) delimit said volume (V), and a lens shaping element (200) that contacts the membrane (20) and defines an area (21) of said membrane (20), which area (21) has an adjustable curvature for adjusting the focal length of the lens (1). According to the invention, the lens (1) is configured to compensate a thermal expansion of the liquid (2) and/or a change of the refractive index of the liquid (2) due to an increased temperature of the liquid (2) in order to reduce an unwanted thermally induced change of the focal length of the lens (1).

Abstract: An optical device (1), comprising: a first refractive element (10) configured to refract incoming light (L), wherein the first refractive element (10) comprises a first refractive index (n1(T)) and a first surface S1(T) for receiving a wavefront (W) of said incoming light, a second refractive element (11) configured to refract light coming from the first refractive element (10), wherein the second refractive element (11) is arranged adjacent the first refractive element (10) such that a second surface (S2(T)) is formed between the first refractive element (10) and the second refractive element (11), via which second surface (S2(T)) light can pass from the first refractive element (10) to the second refractive element (11), and wherein the second refractive element (11) comprises a second refractive index (n2(T)) and a third surface (S3(T)) for transmitting light coming from the first refractive element (10) and passing through the second refractive element (11), and wherein the refractive indices (n1(T), n2(T

Abstract: The present invention relates to a lens (1) having an adjustable optical power, wherein the lens (1) comprises a container (2), wherein the container (2) comprises: a lens volume (V) filled with a transparent fluid (F1), a reservoir volume (R1) filled with the transparent fluid (F1) and connected to the lens volume (V), a frame structure (3) forming a lateral wall of the container (2), wherein the frame structure comprises a first recess (30) for accommodating at least a portion of the lens volume (V), and wherein the frame structure (3) comprises a second recess (31) for accommodating at least a portion of the reservoir volume (R1), an elastically deformable and transparent membrane (4) connected to the frame structure, a lens shaping element (5) connected to the membrane, wherein the lens shaping element (5) comprises a circumferential edge (50a) defining an area (4a) of the membrane (4) having an adjustable curvature, a transparent bottom wall (6) connected to the frame structure (3) so that the lens volum

Abstract: The present invention relates to An optical device (1), particularly for an ophthalmic device, comprising: a container (2) enclosing an internal space (3) of the container (2), wherein the internal space (3) is filled with a transparent liquid (L), and wherein the container (2) comprises a transparent bottom (21) and a transparent and elastically deformable membrane (22) opposing said bottom (21) such that the liquid (L) is arranged between the membrane (22) and the bottom (21), a deformable annular lens shaping element (4) connected to the membrane (22) so that a circumferential edge (41) of the lens shaping element (4) defines a central area (23) of the membrane (22) so that light can pass through the container (2) via the central area (23) and the bottom (21), wherein in a non-deformed state said edge (41) lies in a plane, and an adjustable spherical power and an adjustable cylindrical power, wherein for adapting the cylindrical power of the optical device (1), the lens shaping element (4) is configured to

Abstract: The invention relates to a lens (1) having an adjustable focal length, comprising: a container (2) enclosing an internal space (3) of the container (2), wherein the internal space (3) is filled with a transparent liquid (L), and wherein the container (2) comprises a circumferential lateral wall (20) surrounding said internal space (3), wherein the lateral wall (20) is connected to a transparent cover element (21) and to a transparent and elastically deformable membrane (22) such that the liquid (L) is arranged between the membrane (22) and the cover element (21), an annular lens shaper (4) connected to the membrane (22) so that an inner circumferential edge (40) of the lens shaper (4) defines a central area (23) of the membrane (22) and light passing said area (23) is refracted depending on a curvature of said area (23), and an actuator configured to move the lens shaper (4) towards or away from the cover element (21) to adjust said curvature of said area (23) of the lens (1) and therewith the focal length of