WO2023089334A1 - Appareil doté d'un connecteur flexible - Google Patents

Appareil doté d'un connecteur flexible Download PDF

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Publication number
WO2023089334A1
WO2023089334A1 PCT/GB2022/052939 GB2022052939W WO2023089334A1 WO 2023089334 A1 WO2023089334 A1 WO 2023089334A1 GB 2022052939 W GB2022052939 W GB 2022052939W WO 2023089334 A1 WO2023089334 A1 WO 2023089334A1
Authority
WO
WIPO (PCT)
Prior art keywords
bend
flexible connector
movable part
locating feature
shaper
Prior art date
Application number
PCT/GB2022/052939
Other languages
English (en)
Inventor
Oliver HART
Alexander Johnson
Nicolas HEIJNE
Stephen Matthew BUNTING
Samuel ARMSTRONG
Robin Eddington
Andrew Benjamin Simpson Brown
James Howarth
Original Assignee
Cambridge Mechatronics Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cambridge Mechatronics Limited filed Critical Cambridge Mechatronics Limited
Publication of WO2023089334A1 publication Critical patent/WO2023089334A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element

Definitions

  • the present application relates to an apparatus comprising: a support structure; a movable part; an actuator assembly configured to move the movable part relative to the support structure; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector; and a locating feature configured to locate the bend relative to the movable part and/or a bend shaper configured to engage the bend so as to help shape the bend.
  • the apparatus is a camera assembly
  • the movable part comprises an image sensor
  • the flexible connector is for making electrical connections to the image sensor
  • the actuator assembly is for providing optical image stabilisation (OIS) by, for example, tilting the movable part.
  • the apparatus also comprises a lens assembly configured to focus an image onto the image sensor.
  • Such a camera assembly may be applied in a variety of devices including handheld devices such as mobile phones.
  • Such a camera assembly may be used, for example, to provide a camera capable of providing optical image stabilisation (OIS).
  • OIS optical image stabilisation
  • OIS may be provided by having an actuator assembly configured to rotate an image sensor (or a camera module comprising the image sensor) about an axis perpendicular to the light-sensitive surface/region of the image sensor (herein also referred to as the 'primary sensor axis').
  • This method of providing OIS is herein also referred to as 'sensor-rotation OIS'.
  • OIS may be provided by having the actuator assembly configured to tilt the image sensor (or the camera module comprising the image sensor) about a first and/or second axes (herein also referred to 'tilt axes') which are perpendicular to each other and perpendicular to a primary axis.
  • the primary axis is defined with reference to the support structure of the camera assembly.
  • the primary axis is also an axis which aligns with the primary sensor axis when the image sensor is not tilted.
  • the primary axis may be the longitudinal axis of the camera assembly. This method of providing OIS is herein also referred to as 'sensor-tilt OIS'.
  • W02011/104518A discloses an actuator assembly capable of providing such sensor-rotation OIS and sensor-tilt OIS.
  • a camera assembly may comprise a flexible connector mechanically and electrically connected at one end to the movable part (e.g. the image sensor, or the camera module comprising the image sensor).
  • the flexible connector may be folded so as to reduce its contribution to the footprint of the camera assembly and/or so as to reduce its effect of resisting desirable movement of the movable part.
  • the flexible connector may provide resistance to the image sensor being rotated about the primary sensor axis and/or the image sensor being tilted about the first and/or second tilt axes.
  • an apparatus comprising: a support structure; a movable part; an actuator assembly configured to move the movable part relative to the support structure; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel (e.g. parallel) to a major surface of the flexible connector; and a locating feature configured to locate the bend relative to the movable part.
  • a component suitable for a camera assembly comprising: a movable part; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector; and a locating feature attached to a part of the flexible connector such that the bend is formed by a bend portion of the flexible connector between the movable part and the locating feature, wherein the locating feature is configured to locate the part of the flexible connector relative to the movable part.
  • the locating feature may help define, control, and/or fix the path length of the bend, i.e. the length of the path followed by the flexible connector as it extends from the movable part and follows the bend.
  • the following optional features may apply to the first and second aspects of the present invention.
  • the bend comprises a U-shaped bend with at least one offset.
  • the bend may be a singleoffset U-bend or a double-offset U-bend.
  • the offset bend may help keep the apparatus and/or component compact. For example, where the offset bend may help minimise by how much the flexible connector adds to the Z-height of the apparatus (or an apparatus comprising the component).
  • the locating feature engages the (e.g. lateral) side of the movable part from which the flexible connector extends (e.g. the side of the movable part that the flexible connector is connected to), so as to locate the bend relative to the movable part.
  • the apparatus and/or the component comprises a bend shaper configured to (e.g. directly) engage the bend so as to help shape the bend, and/or help define or maintain the shape of the bend.
  • the bend shaper may define a minimum bend angle so as to prevent overbending damage e.g. to the electrical tracks of the flexible connector.
  • the bend shaper may ensure that the bend lies as intended after assembly which e.g. helps prevent the bend from clashing with parts of the support structure during movement of the movable part relative to the support structure.
  • the bend follows the contour of a (e.g. curved) part of the bend shaper.
  • the locating feature may be configured to mechanically engage with the movable part.
  • the locating feature is configured to mechanically engage with the movable part laterally of the flexible connector.
  • the locating feature is attached to a part of the flexible connector such that the bend is formed by a bend portion of the flexible connector extending between the movable part and the locating feature, wherein the locating feature is configured to locate the part of the flexible connector relative to the movable part.
  • the locating feature may protrude from a major surface of the flexible connector that forms an inside of the bend.
  • the locating feature may protrude from only the major surface of the flexible connector that forms an inside of the bend.
  • the locating feature may further protrude from a major surface of the flexible connector that forms an outside of the bend.
  • the locating feature may comprise at least one extension configured to locate the locating feature relative to the movable part, wherein the extension protrudes from a main body of the locating feature such that a distance between a tip of the extension and a joint between the main body and the flexible connector is greater than a distance between an exterior of the main body and the joint.
  • the extension is located outside the footprint of the flexible connector as viewed along an axis perpendicular to a major surface of the flexible connector.
  • the locating feature may be located inside the footprint of the flexible connector as viewed along an axis perpendicular to a major surface of the flexible connector.
  • the flexible connector extends from the movable part, the flexible connector is divided into a plurality of legs after the bend.
  • the bend may be formed around the bend shaper such that the bend shaper is adjacent to a major surface of the flexible connector that forms an inside of the bend. Additionally or alternatively, the bend may be formed against the bend shaper such that the bend shaper is adjacent to a major surface of the flexible connector that forms an outside of the bend.
  • the flexible connector is attached to the bend shaper.
  • the apparatus and/or the component may comprise an adhesive for adhering the flexible connector to the bend shaper.
  • the locating feature is attached to the movable part.
  • the bend shaper may be formed of a hardened adhesive.
  • the locating feature and the bend shaper (which may also be referred to as the bend guide) may be integral, i.e. integrally formed.
  • the locating feature and bend shaper may be separate components. Where this the case, the locating feature and bend shaper may be attached to each other.
  • the actuator assembly is configured to rotate the movable part about a first and/or second axes relative to the support structure, wherein the first and second axes are perpendicular to each other and perpendicular to a primary axis defined with reference to the support structure.
  • the flexible connector may be configured to allow the rotation of the movable part about a first and/or second axes relative to the support structure.
  • the primary axis may be the longitudinal axis of the apparatus.
  • the actuator assembly is configured to rotate the movable part about the primary axis relative to the support structure.
  • the flexible connector may be configured to allow the rotation of the movable part about the primary axis relative to the support structure.
  • the movable part comprises an electronic component and the flexible connector is for making electrical connections to the electronic component.
  • the electronic component may, for example, be an image sensor, a display, an emitter, or a part thereof.
  • the electronic component comprises an upward-facing light-sensitive (or radiationsensitive) or light-emitting (or radiation-emitting) side
  • the flexible connector passes (directly) underneath the movable part, e.g. across the lateral extent of the movable part, after the bend, as the flexible connector extends from the movable part.
  • the apparatus may be a camera assembly.
  • the electronic component may be an image sensor
  • the apparatus may further comprise a lens assembly, e.g. positioned above the image sensor with respect to a primary axis.
  • the lens assembly may be configured to focus an image onto the image sensor.
  • the actuator assembly may be configured to move the movable part relative to the support structure so as to provide optical image stabilisation (OIS).
  • OIS optical image stabilisation
  • the primary axis may be parallel to the optical axis of the lens assembly.
  • the flexible connector comprises: a first portion connected at one end to the movable part passes between the movable part and the support structure, below the image sensor with respect to the primary axis; and a second portion extending from the first portion and located outside the footprint of the movable part as viewed along the primary axis.
  • the first portion comprises one or more bends, each about an axis substantially parallel to the primary axis.
  • the lens assembly is comprised in the movable part.
  • the actuator assembly comprises one or more shape memory alloy (SMA) wires operatively connected (e.g. mechanically and electrically connected) between the support structure and the movable part.
  • SMA shape memory alloy
  • the actuator assembly may comprise eight SMA wires divided in two groups of four SMA wires, wherein: two SMA wires are located on each of four sides around the primary axis, the four sides extending in a loop around the primary axis; the two SMA wires on each of the four sides are inclined with respect to the primary axis; the SMA wires of each of the two groups of four SMA wires are arranged with a two-fold rotational symmetry about the primary axis; and one of the two groups of four SMA wires provides a force on the movable part with a component in a first direction along the primary axis and the other of the two groups of four SMA wires provides a force on the movable part with a component in a second direction along the primary axis, opposite to the first direction along the primary axis.
  • W02011/104518A shows an example of such an actuator assembly.
  • the movable part may be movable relative to the support structure across a range of movement in two orthogonal directions perpendicular to the primary axis; and the actuator assembly may comprise four SMA wires, wherein none of the SMA wires are collinear and the SMA wires are capable of being selectively driven to move the movable part relative to the support structure to any position in said range of movement without applying any net torque to the movable part in the plane of the two orthogonal directions around the primary axis.
  • WO2013/175197A shows an example of such an actuator assembly.
  • the actuator assembly may comprise four SMA wires and a biasing element arranged to resist translation of the movable part in a plane perpendicular to the primary axis.
  • W02020/074899A shows an example of such an actuator assembly.
  • a bearing arrangement may support the movable part on the support structure, e.g. a pivot bearing.
  • the first portion of the flexible connector e.g. its plurality of legs
  • an apparatus comprising: a support structure; a movable part; an actuator assembly configured to move the movable part relative to the support structure; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector; and a bend shaper configured to engage the bend so as to help shape the bend.
  • the apparatus of the third aspect of the present invention comprises a locating feature configured to locate the bend relative to the movable part.
  • the bend of the third aspect of the present invention may also comprise a U-shaped bend with at least one offset.
  • the bend may be a single-offset U-bend or a double-offset U-bend.
  • the locating feature of the third aspect of the present invention may engage the (e.g. lateral) side of the movable part from which the flexible connector extends (e.g. the side of the movable part that the flexible connector is connected to), so as to locate the bend relative to the movable part.
  • the bend shaper of the third aspect of the present invention may be configured to (e.g. directly) engage the bend so as to help shape the bend, and/or help define or maintain the shape of the bend.
  • the bend shaper may define a minimum bend angle so as to prevent overbending damage e.g. to the electrical tracks of the flexible connector.
  • the bend shaper may ensure that the bend lies as intended after assembly which e.g. helps prevent the bend from clashing with parts of the support structure during movement of the movable part relative to the support structure.
  • the bend may follow the contour of a (e.g. curved) part of the bend shaper.
  • the locating feature and the bend shaper may be integral, i.e. integrally formed.
  • the flexible connector extends from the movable part, the flexible connector is divided into a plurality of legs after the bend.
  • the actuator assembly may be configured to rotate the movable part about a first and/or second axes (herein also referred to as first and second tilt axes) relative to the support structure, wherein the first and second axes are perpendicular to each other and perpendicular to a primary axis defined with reference to the support structure.
  • the flexible connector may be configured to allow the rotation of the movable part about a first and/or second axes relative to the support structure.
  • the primary axis may be the longitudinal axis of the apparatus.
  • the actuator assembly may be configured to rotate the movable part about the primary axis relative to the support structure.
  • the flexible connector may be configured to allow the rotation of the movable part about the primary axis relative to the support structure.
  • the movable part may comprise an electronic component and the flexible connector may be for making electrical connections to the electronic component.
  • the electronic component may, for example, be an image sensor, a display, an emitter, or a part thereof.
  • the electronic component may comprise an upward-facing light-sensitive (or radiationsensitive) or light-emitting (or radiation-emitting) side
  • the flexible connector may pass (directly) underneath the movable part, e.g. across the lateral extent of the movable part, after the bend, as the flexible connector extends from the movable part.
  • the apparatus of the third aspect of the present invention may be a camera assembly.
  • the electronic component may be an image sensor
  • the apparatus may further comprise a lens assembly, e.g. positioned above the image sensor with respect to a primary axis.
  • the lens assembly may be configured to focus an image onto the image sensor.
  • the actuator assembly may be configured to move the movable part relative to the support structure so as to provide optical image stabilisation (OIS).
  • OIS optical image stabilisation
  • the primary axis may be parallel to the optical axis of the lens assembly.
  • the flexible connector may comprise: a first portion connected at one end to the movable part that passes between the movable part and the support structure, below the image sensor with respect to the primary axis; and a second portion extending from the first portion and located outside the footprint of the movable part as viewed along the primary axis.
  • the first portion may comprise one or more bends, each about an axis substantially parallel to the primary axis.
  • the lens assembly may be comprised in the movable part.
  • the actuator assembly may comprise one or more SMA wires operatively connected (e.g. mechanically and electrically connected) between the support structure and the movable part.
  • the actuator assembly may comprise eight SMA wires divided in two groups of four SMA wires, wherein: two SMA wires are located on each of four sides around the primary axis, the four sides extending in a loop around the primary axis; the two SMA wires on each of the four sides are inclined with respect to the primary axis; the SMA wires of each of the two groups of four SMA wires are arranged with a two-fold rotational symmetry about the primary axis; and one of the two groups of four SMA wires provides a force on the movable part with a component in a first direction along the primary axis and the other of the two groups of four SMA wires provides a force on the movable part with a component in a second direction along the primary axis, opposite to the first direction along the primary axis.
  • the movable part may be movable relative to the support structure across a range of movement in two orthogonal directions perpendicular to the primary axis; and the actuator assembly may comprise four SMA wires, wherein none of the SMA wires are collinear and the SMA wires are capable of being selectively driven to move the movable part relative to the support structure to any position in said range of movement without applying any net torque to the movable part in the plane of the two orthogonal directions around the primary axis.
  • the actuator assembly may comprise four SMA wires and a biasing element arranged to resist translation of the movable part in a plane perpendicular to the primary axis.
  • a camera assembly comprising: a support structure; the component mentioned above, wherein the movable part comprises an image sensor and the flexible connector is for making electrical connections to the image sensor; a lens assembly positioned above the image sensor with respect to a primary axis, wherein the primary axis is defined with reference to the support structure and passes through the image sensor; and an actuator assembly configured to move the movable part relative to the support structure.
  • Fig. 1 is schematic diagram of a camera assembly incorporating an actuator assembly
  • Fig. 2 is a side view of a flexible connector attached to a movable part
  • Fig. 3 is a bottom perspective view of what is shown in Fig. 2;
  • Fig. 4 is a bottom perspective view of a flexible connector attached to a movable part
  • Fig. 5 is a top perspective view of a flexible connector
  • Fig. 6 is a side view of a flexible connector attached to a movable part
  • Fig. 7 is a top perspective view of an unfolded flexible connector attached to a movable part
  • Fig. 8 is a side view of a flexible connector attached to a movable part
  • Fig. 9 is a top perspective view of an unfolded flexible connector attached to a movable part
  • Fig. 10 is a top perspective view of an unfolded flexible connector attached to a movable part
  • Fig. 11 is a side view of the flexible connector shown in Fig. 10;
  • Fig. 12 is a side view of a flexible connector attached to a movable part
  • Fig. 13 is a side view of a flexible connector attached to a movable part
  • Fig. 14 is a perspective view of the flexible connector shown in Fig. 13;
  • Fig. 15 is a perspective view of the flexible connector shown in Fig. 13;
  • Fig. 16 is a perspective view of the flexible connector shown in Fig. 13;
  • Fig. 17 is a bottom perspective view of a flexible connector bent around a bend shaper
  • Fig. 18 is a bottom perspective view of the bend shaper of Fig. 17;
  • Fig. 19 is a side view of a step in a method of forming a bend in the flexible connector of Fig.
  • Fig. 20 is a side view of another step in the method of forming a bend in the flexible connector of Fig. 13;
  • Fig. 21 is a side view of another step in the method of forming a bend in the flexible connector of Fig. 13;
  • Fig. 22 is a side view of a flexible connector attached to a movable part
  • Fig. 23 is a side view of a flexible connector attached to a movable part
  • Fig. 24 is a side view of a step in a method of forming a bend in the flexible connector of Fig.
  • Fig. 25 is a side view of another step in the method of forming a bend in a flexible connector of Fig. 23. Detailed Description
  • Fig. 1 is a schematic diagram of a camera assembly 1.
  • the camera assembly 1 includes a movable camera module 100, a support structure 3, and an actuator assembly 2.
  • the support structure 3 includes a base 5.
  • the camera module 100 comprises an image sensor 6 and a lens assembly 4.
  • the camera assembly 1 also includes an actuator assembly 2 configured to move the camera module 100 relative to the support structure 3.
  • the actuator assembly 2 may be an SMA (shape memory alloy) actuator assembly comprising SMA wires, a voice coil motor (VCM) actuator assembly, or any other suitable type of actuator assembly.
  • SMA shape memory alloy
  • VCM voice coil motor
  • the lens assembly 4 is positioned above the image sensor 6 with respect to a primary axis P of the camera assembly 1.
  • the image sensor 6 is disposed in front of a front side of the base 5, i.e., the image sensor 6 is interposed between the lens assembly 4 and the base 5.
  • the primary axis P is defined with reference to the support structure 3 and is substantially perpendicular to the major surfaces of the base 5. As shown in Fig. 1, the primary axis P aligns with an optical axis O of the lens assembly 4 when the lens assembly 4 is not tilted, i.e. rotated about a first and/or second axes (herein also referred to as the 'first and/or second tilt axes'), wherein the first and second axes are perpendicular to each other and to the primary axis.
  • a first and/or second axes herein also referred to as the 'first and/or second tilt axes'
  • the camera assembly 1 includes an integrated circuit (IC) 7, which implements a control circuit, and also a gyroscope sensor (not shown).
  • IC integrated circuit
  • the support structure 3 also includes a can 8 which protrudes forwardly from the base 5 to encase and protect the other components of the camera assembly 1.
  • the lens assembly 4 includes a lens carriage 9 in the form of a cylindrical body supporting two lenses 10 arranged along the optical axis O. In general, any number of one or more lenses 10 may be included.
  • the camera assembly 1 may be comprised in a camera, which may be referred to as a miniature camera.
  • the lens assembly 4 is arranged to focus an image onto the image sensor 5.
  • the image sensor 6 captures the image and may be of any suitable type, for example, a charge-coupled device (CCD) or a complementary metal-oxide- semiconductor (CMOS) device.
  • CCD charge-coupled device
  • CMOS complementary metal-oxide- semiconductor
  • the lenses 10 are supported on the lens carriage 9. Although all the lenses 10 are fixed to the lens carriage 9 in this example, the lens carriage 9 may include an actuator assembly (not shown) configured to move at least one of the lenses 10 along the optical axis O relative to the image sensor 6, for example to provide autofocussing (AF) or zoom.
  • an actuator assembly is herein also referred to as an 'AF actuator assembly'.
  • the actuator assembly 2 is configured to rotate the camera module 100 about the first and/or second tilt axes.
  • the actuator assembly 2 is also configured to rotate the camera module 100 about an axis S (herein also referred to as the 'primary sensor axis') which is perpendicular to the lightsensitive surface/region of the image sensor 6 and passes through the centre of the image sensor 5.
  • Such rotations can be used to provide optical image stabilisation (OIS). Examples of actuator assemblies capable of providing some or all of these rotations are described in WO 2011/104518 Al, WO 2013/175197 Al, and WO 2020/074899 Al which are incorporated herein by reference.
  • the primary sensor axis S is always aligned with the optical axis O as the position of the lens assembly 4 is fixed laterally in relation to the image sensor 6, but this may not be the case in alternative embodiments - for example, where the lens assembly 4 is configured to move laterally relative to the image sensor 6 for OIS or sensor-shift stabilisation. As shown in Fig. 1, the primary sensor axis S aligns with the primary axis P and the optical axis O, when the camera module 100 is untilted and laterally centred.
  • the camera assembly 1 comprises a flexible connector 20 for making electrical connections to the image sensor 6, and optionally other components of the camera module 100 such as the AF actuator assembly (if one is provided).
  • the flexible connector 20 may be a flexible circuit such as a flexible printed circuit (FPC), a flat flexible cable (FFC) or a rigid flex printed circuit (RFPC).
  • the flexible connector 20 may be described as a flat flexible connector.
  • the flexible connector has two major surfaces. These surfaces are planar when the flexible connector is laid flat, i.e. unfolded.
  • the flexible connector 20 has a first portion that is connected at one end to a base 60 of the camera module 100 on which the image sensor 6 is mounted.
  • the first portion passes between the camera module 100 and the support structure 3, below the camera module 100 with respect to the primary axis P.
  • the flexible connector 20 also has a second portion extending from the first portion, and located outside the footprint of the camera module 100 as viewed along the primary axis P.
  • the first portion of the flexible connector 20 passes between the camera module 100 and the support structure 3, below the image sensor 6 with respect to the primary axis P.
  • the major surfaces of the first portion are substantially perpendicular to the primary axis P. For example, normal(s) to the major surfaces of the first portion are at a shallow angle e.g. of less than 45 degrees to the primary axis P.
  • the first portion of the flexible connector 20 extends from the camera module 100 to the second portion, the first portion slopes downward, i.e. slopes away from the base 60 of the camera module 100 (which includes the image sensor 6).
  • the flexible connector 20 extends from a lateral side of the base 60 in a first direction and then bends around to extend in a second direction which is opposite to the first direction.
  • the first direction and second direction are perpendicular to the primary axis P.
  • the lateral side from which the flexible connector 20 extends is substantially parallel to the primary axis P.
  • the flexible connector 20 extends from a central portion of the lateral side of the base 60.
  • the first portion comprises a bend 21 about an axis substantially parallel to a major surface of the flexible connector.
  • This bend 21 is a U-shaped bend 21 (which is herein also referred to as a U-bend 21) that directs the flexible connector 20 from extending from a lateral side of the base 60 to extending underneath the base 60.
  • the U-shaped bend 21 may be a U-shaped bend with one offset side, which is also known as a single-offset U-bend.
  • the lower side of the U-bend 21 may be offset.
  • the upper side of the U-bend 21 may be offset.
  • the U-shaped bend 21 may be a double-offset U-bend where both the lower and upper side of the U-bend are offset.
  • the U- bend 21 may help make the flexible connector 20 more compact, for example by allowing the flexible connector 20 to sit under the image sensor 6 such that the flexible connector 20 does not add so much to the XY footprint of the camera assembly 1.
  • the offset in the bend 21 may help minimise by how much the flexible connector 20 adds to the Z-height of the apparatus.
  • the flexible connector 20 As shown in Figs. 3 to 5, as the flexible connector 20 extends from the base 60 (or camera module 100), the flexible connector 20 is divided into a plurality of spaced-apart legs. As shown in Figs. 3 and 4, the flexible connector 20 may be divided into two legs. As shown in Fig. 5, the flexible connector 20 may be divided into four legs.
  • the plurality of legs comprises bends, each about an axis substantially parallel to the primary axis P.
  • these bends are hereinafter also referred to as 'XY-plane bends'.
  • the XY-plane bends help reduce the torsional stiffness of the flexible connector 20.
  • the first portion comprises one or more bends, each about an axis substantially parallel to the primary axis P.
  • the XY-plane bends could be described as saddle bends (e.g. 3-point or 4-point saddle bends), and/or crossover bends.
  • the stiffness of the flexible connector 20 may resist desirable movement of the camera module 100.
  • the flexible connector 20 may provide resistance to the camera module 100 (and thus the image sensor 6) being rotated about the primary sensor axis S.
  • the flexible connector 20 may also resist the camera module 100 (and thus the image sensor 6) being rotated about the first and/or second tilt axes. Both of these rotations are desirable for OIS.
  • the plurality of legs and XY-plane bends may help to make the flexible connector 20 more flexible and may help to reduce the effective stiffness of the flexible connector 20.
  • the plurality of legs and/or the XY-plane bends may reduce the resistance of the flexible connector 20 against the camera module 100 being rotated about the primary sensor axis S.
  • the plurality of legs and/or the XY-plane bends may reduce the resistance of the flexible connector 20 against the camera module 100 being rotated about the primary sensor axis S.
  • the position and the shape of the U-bend 21 it is desirable for the position and the shape of the U-bend 21 to be accurate to ensure that the profile of the flexible connector 20 lies as intended after assembly of the camera assembly 1 and/or to prevent the flexible connector 20 from undesirably clashing with other components in the camera assembly during OIS motion or during drop scenarios. Inaccurate positioning or shaping of the U- bend 21 can cause negative effects such as overstraining and/or overstressing of the flexible connector 20 during OIS motion or during drop scenarios.
  • Figs. 6 to 25 show flexible connectors 20 combined with features that help improve with accurate positioning and shaping of the U-bend 21 of the flexible connector 20.
  • a locating feature 22 configured to help locate the bend relative to the movable part 100 can be provided.
  • the locating feature 22 is configured to mechanically engage with the base 60 of the camera module 100 so as to locate the bend 21 relative to the base 60 (and the camera module 100). An edge of the locating feature 22 contacts an edge or a lateral side of the base 60. The locating feature 22 engages the lateral side of the base 60 from which the flexible connector extends, i.e. the side of the base 60 that the flexible connector is connected to. Alternatively, the locating feature 22 may engage with another surface of the camera module 100.
  • the locating feature 22 may set the exit of the static bend 21.
  • the locating feature 22 may be configured to set the position of a particular point along the flexible connector 20 relative to another feature (e.g. the image sensor 6).
  • the locating feature 22 may not define the shape of the bend 21, although it may to an extent influence the shape of the bend 21.
  • the position of the locating feature 22 along the flexible connector 20 may affect the minimum internal bend radius of the bend 21.
  • the locating feature 22 may be configured such that the minimum internal bend radius of the flexible connector 20 is maintained at least five and at most ten times (e.g. six times) the thickness of the flexible connector 20.
  • the locating feature 22 may have a length (along the longitudinal direction of the flexible connector 20) of at least 0.5mm and at most 2mm (e.g. 1mm).
  • the locating feature 22 is attached to part of the flexible connector 20 such that the bend 21 is formed by a bend portion of the flexible connector 20 extending between the base 60 and the locating feature 22.
  • the bend portion of the flexible connector 20 is a length of the flexible connector 20 that is shaped to form the bend 21.
  • the bend portion may be defined between the base 60 and the locating feature 22.
  • the locating feature 22 may or may not be attached to the flexible connector 20.
  • the locating feature 22 may be attached to the movable part 100.
  • the locating feature 22 may be attached to the part of the movable part 100 that it engages with to help locate the bend 21.
  • the locating feature 22 is provided at a fixed distance along the length of the flexible connector 20.
  • the locating feature 22 may be formed integrally with the flexible connector 20.
  • the locating feature 22 is provided at the opposite end of the bend 21 from the end of the flexible connector 20 that is connected to the movable part.
  • the locating feature 22 may be narrower than a width of the flexible connector 20 under the image sensor 6.
  • Fig. 7 shows the flexible connector 20 in an unfolded state. When folded, the outermost legs of the flexible connector 20 span across a greater width than the locating feature 22.
  • the locating feature 22 may be located inside the footprint of the flexible connector 20 as viewed along an axis perpendicular to a major surface of the flexible connector 20.
  • the locating feature 22 is configured to set as a constant the path length of the flexible connector 20 extending from the end connected to the movable part 100 to the portion of the flexible connector 20 exiting the bend 21. This helps to control the size and/or position of the bend 21. Additionally, the locating feature 22 may be configured to set as a constant the path length of the flexible connector 20 extending from the portion of the flexible connector 20 exiting the bend 21 to the end of the flexible connector 20 that is opposite the end of the flexible connector 20 connected to the movable part 100.
  • the locating feature 22 protrudes from a major surface of the flexible connector 20 that forms an inside of the bend 21.
  • the locating feature 22 is configured to locate relative to the movable part (e.g. by mechanical engagement) without requiring the flexible connector 20 itself to contact the base 60 directly.
  • the locating features 22 of Figs. 6 to 12 may further protrude from a major surface of the flexible connector 20 that forms an outside of the bend 21. Moreover, as shown in Figs. 7 and 10, the locating features 22 of Figs. 6 to 12 may be configured to surround the flexible connector 20 at a position along the length of the flexible connector 20.
  • the locating features 22 of Figs. 6 to 12 may protrude from only the major surface of the flexible connector that forms the inside of the bend 21.
  • the locating feature 22 comprises at least one extension 26 (or extended region).
  • the extension 26 is configured to locate the locating feature 22 relative to the movable part.
  • the extension 26 protrudes from a main body 25 of the locating feature 22 such that a distance between a tip 29 of the extension 26 and a joint 28 between the main body 25 and the flexible connector 22 is greater than a distance between an exterior of the main body 25 and the joint 28.
  • the extensions 26 form part of the locating feature 22.
  • the extensions 26 are arranged to ensure that the point of contact between the locating feature 22 and the movable part once the flexible connector 20 is folded are not near to the region where the flexible connector 20 exits from the locating feature 22.
  • the extension 26 is located outside the footprint of the flexible connector 20 as viewed along an axis perpendicular to a major surface of the flexible connector 20.
  • the locating feature 22 is configured to mechanically engage with the movable part laterally of the flexible connector 20.
  • the locating feature 22 attached to the flexible connector 20, the flexible connector 20, the base 60, and the locating feature 22 may be formed as a single component.
  • the component may be formed as a single rigid-flex printed circuit board component wherein the base 60 and locating feature 22 are rigid (e.g. circuit) boards and the flexible connector 20 is a flexible circuit board.
  • the component may be comprised in a camera assembly 1.
  • the component may be an intermediate component that is manufactured during a process of manufacturing the camera assembly 1. The component may be transported before being combined with other parts of the camera assembly 1 to manufacture the camera assembly 1.
  • a bend shaper 32 configured to engage the bend 21 so as to help define or shape the bend 21, and/or help maintain the shape of the bend 21 can be provided.
  • the bend shaper 32 may be provided in addition to the locating feature 22. As shown in Figs. 13 to 22, the locating feature 22 and the bend shaper 32 may be integrally formed. As shown in Fig. 12, the locating feature 22 and the bend shaper 32 may be separate components. Where this the case, the locating feature 22 and bend shaper 32 may directly or indirectly engage each other, and/or the locating feature 22 and bend shaper 32 may be fixed relative to each other (e.g. attached to each other).
  • the bend shaper 32 may define a minimum bend angle of the bend 21 so as to prevent overbending damage e.g. to the electrical tracks of the flexible connector 20.
  • the bend shaper 32 is configured such that the bend 21 follows the contour of at least part of the bend shaper 32 (e.g. a curved part of the bend shaper 32).
  • the bend shaper 32 is configured such that a major surface of the flexible connector 20 is adjacent to the bend shaper 32.
  • a surface of the bend shaper 32 defines the shape of at least part of the bend 21. This can help to reduce variability in the shape and/or size of the bend 21.
  • the bend 21 may be formed around the bend shaper 32 such that the bend shaper 32 is adjacent to a major surface of the flexible connector 20 that forms an inside of the bend 21.
  • the flexible connector 20 is folded around the outside of the bend shaper 32.
  • the bend shaper 32 may not significantly add to the volume taken up by the flexible connector 20.
  • the bend 21 may be formed against the bend shaper 32 such that the bend shaper 32 is adjacent to a major surface of the flexible connector that forms an outside of the bend 21.
  • the bend shaper 32 may be an inner bend shaper configured to help shape the bend 21 by engaging the inside of the bend 21, or may be an outer bend shaper configured to help shape the bend 21 by engaging the outside of the bend 21. Both an inner and an outer bend shaper may be provided in certain embodiments.
  • the bend shaper 32 may be formed of a rigid material. Moreover, the bend shaper 32 and the flexible connector may be fixed (e.g. glued) together such that the bend 21 is a static bend. An adhesive may be provided for adhering the flexible connector 20 to the bend shaper 32 and/or the locating feature 22.
  • the bend shaper 32 and the locating feature 22 may be provided as separate members.
  • the bend shaper 32 may simply define the shape of the bend 21.
  • the bend shaper 32 may be glued to the inner surface of the bend 21 and define the minimum radius and shape of the bend 21.
  • the location of the bend 21 may be set by the interaction/engagement between the locating feature 22 and the movable part 100.
  • the bend shaper 32 may have one or more locating features 33 configured to extend from the sides of the bend shaper 32 into one or more pockets 101 in the movable part 100.
  • the bend shaper 32 may have one or more locating features 34 configured to extend from the locating feature 22 under the base 60.
  • Figs. 19 to 21 show a method for forming the bend 21 around any of the bend shapers 32 shown in Figs. 12 to 18. The method involves guiding the flexible connector 20 around the bend shaper 32 and clamping in place the flexible connector 20 while an adhesive provided between the bend shaper 32 and the flexible connector 20 is cured.
  • the first step involves engaging the bend shaper 32 and the flexible connector 20, and then inserting a plate or other tool 50 that guides the flexible connector 20 to wrap around a first portion of the bend shaper 32 so as to form the initial 90° bend (i.e. the offset portion of the U- bend 21).
  • the tool 50 presses the flexible connector 20 onto the surface of the bend shaper 32.
  • the tool 50 has a shaping surface 51 configured to define the shape of part of the bend 21.
  • a separate tool may be used to press the locating feature 22 into engagement with the movable part 100.
  • FIG. 20 shows the tool 52 once it has been rotated and is pressing the flexible connector 20 against the bend shaper 32.
  • Adhesive between the bend shaper 32 and the flexible connector 20 may be provided before the first step, during the first step and/or during subsequent steps.
  • the tools 50 and 52 press the flexible connector 20 against the bend shaper 32 until the flexible connector 20 is cured.
  • the external bend radius may be defined by the bend shaper 32.
  • the bend shaper 32 of Fig. 22 may be part of the movable part 100.
  • the bend shaper 32 of Fig. 22 may comprise a groove 56.
  • the bend 21 may be formed by pushing the flexible connector 21 into the bend shaper 32 to give a 90° form, i.e. form the offset portion of the U-bend 21.
  • Adhesive may be provided between the bend shaper 32 of Fig. 22 and the flexible connector 20.
  • the bend shaper 32 and the locating feature 22 are integrally formed but these may be separate components.
  • the bend shaper 32 may be formed of a hardened adhesive.
  • the bend 21 may be formed without a separate part such as the bend shaper 32 shown in Figs. 12 to 22, but using an adhesive 30 that is formed and cured in place.
  • such a bend shaper 32 may be formed by dispensing an adhesive 30 on a major surface of the flexible connector 20. Then, using a form tool 55 to form the target shape of the bend 21. Then, having the tool 55 hold the shape while the adhesive 30 hardens.
  • the adhesive 30 may be a low viscosity adhesive.
  • the adhesive may be provided on the major surface of the flexible connector 20 that forms the inside of the bend 21 (as shown in Figs. 23 to 25) or on the major surface of the flexible connector 20 that forms the outside of the bend 21.
  • the adhesive 30 may be cured in an oven.
  • the U-bend 21 may be pre-formed to some extent to help shape the bend 21 more accurately.
  • any apparatus comprising: a support structure; a movable part; an actuator assembly configured to move the movable part relative to the support structure; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector.
  • bend shapers 32 described in relation to Figs. 12 to 25 can be combined with any of the locating features described above in relation to Figs. 6 to 11.
  • the lens assembly 4 does not need to be part of the movable part 100, as moving the lens assembly 4 is not strictly required for OIS.
  • moving the camera module comprising an image sensor and a lens assembly
  • only the image sensor may be moved relative to the support structure and the lens assembly.
  • the actuator assembly 2 may be configured to rotate the movable part about the first and/or second tilt axes, and may not be configured to rotate the movable part about the primary sensor axis S.
  • the actuator assembly 2 may be configured to rotate the movable part about the primary sensor axis S, and may not be configured to rotate the movable part about the first and/or second tilt axes.
  • the apparatus may correspond to (part of) an illumination source which may be for use in a 3D sensing system such as described in W02020/030916 or in an augmented reality (AR) display system.
  • the movable part comprises an emitter or a display (or a part thereof)
  • the movable part may be moved to achieve wobulation, for example for the display of a super-resolution image (i.e. an image having a resolution higher than that of the intrinsic resolution of the emitter or display).
  • a high-resolution image is displayed (or projected) by displaying a number of lower-resolution images at different positions in rapid succession.
  • the image displayed at each position is a lower- resolution image formed of a subset of pixels of the high-resolution image.
  • the movable part may be moved between the positions in a repeated pattern at a high frequency, for example greater than 30 Hz, preferably greater than 60 Hz, further preferably greater than 120 Hz.
  • the succession of lower- resolution images is thus perceived by the human eye as one high-resolution image.
  • the display may be a display panel, for example a LCOS (liquid crystal on silicon) display, a MicroLED display, a digital micromirror device (DMD) or a laser beam scanning (LBS) system.
  • LCOS liquid crystal on silicon
  • MicroLED digital micromirror device
  • LBS laser beam scanning
  • the emitter may be configured to emit radiation (visible light or non-visible radiation, e.g. near infrared (NIR) light, short-wave infrared (SWIR) light).
  • the emitter may comprise one or more LEDs or lasers, for example VCSELs (vertical-cavity surface-emitting lasers) or edge-emitting lasers.
  • the emitter may comprise a VCSEL array.
  • the emitter may otherwise be referred to as an illumination source and/or may comprise an image projector.
  • the display may define a plane and the primary axis may be perpendicular to the plane defined by the display (when the movable part is untilted). In any case, the primary axis may be aligned with a general direction in which light is emitted from the display (when the movable part is untilted).
  • the movable part comprises an emitter
  • the emitter may define a plane and the primary axis may be perpendicular to the plane defined by the emitter (when the movable part is untilted).
  • the emitter may comprise a VCSEL array and the primary axis may be perpendicular to the plane of the VCSEL array (when the movable part is untilted). In any case, the primary axis may be aligned with a general direction in which radiation is emitted by the emitter (when the movable part is untilted).
  • a component for a camera assembly comprising: a movable part; a flat flexible connector for making electrical connections to the movable part, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector; and a locating feature attached to part of the flexible connector such that the bend is formed by a bend portion of the flexible connector between the movable part and the locating feature, wherein the locating feature is configured to locate the part of the flexible connector relative to the movable part.
  • the locating feature comprises at least one extension configured to locate the locating feature relative to the movable part, wherein the extension protrudes from a main body of the locating feature such that a distance between a tip of the extension and a joint between the main body and the flexible connector is greater than a distance between an exterior of the main body and the joint.
  • a camera assembly comprising: a support structure; the component of any preceding item, wherein the movable part comprises an image sensor and the flexible connector is for making electrical connections to the image sensor; a lens assembly positioned above the image sensor with respect to a primary axis, wherein the primary axis is defined with reference to the support structure and passes through the image sensor; and an actuator assembly configured to move the movable part relative to the support structure.
  • a camera assembly comprising: a support structure; a movable part comprising an image sensor; a lens assembly positioned above the image sensor with respect to a primary axis, wherein the primary axis is defined with reference to the support structure and passes through the image sensor; an actuator assembly configured to move the movable part relative to the support structure; a flexible connector for making electrical connections to the image sensor, wherein the flexible connector is connected at one end to the movable part and comprises a bend about an axis substantially parallel to a major surface of the flexible connector; and a bend shaper configured to shape the bend.
  • the flexible connector comprises: a first portion connected at one end to the movable part passes between the movable part and the support structure, below the image sensor with respect to the primary axis; and a second portion extending from the first portion and located outside the footprint of the movable part as viewed along the primary axis.
  • the first portion comprises one or more bends, each about an axis substantially parallel to the primary axis.
  • SMA shape memory alloy
  • the actuator assembly comprises eight SMA wires divided in two groups of four SMA wires, and wherein: two SMA wires are located on each of four sides around the primary axis, the four sides extending in a loop around the primary axis; the two SMA wires on each of the four sides are inclined with respect to the primary axis; the SMA wires of each of the two groups of four SMA wires are arranged with a 2-fold rotational symmetry about the primary axis; and one of the two groups of four SMA wires provides a force on the movable part with a component in a first direction along the primary axis and the other of the two groups of four SMA wires provides a force on the movable part with a component in a second direction along the primary axis, opposite to the first direction along the primary axis.
  • the movable part is movable relative to the support structure across a range of movement in two orthogonal directions perpendicular to the primary axis; and the actuator assembly comprises four SMA wires, wherein none of the SMA wires are collinear and the SMA wires are capable of being selectively driven to move the movable part relative to the support structure to any position in said range of movement without applying any net torque to the movable part in the plane of the two orthogonal directions around the primary axis.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)

Abstract

L'invention concerne un appareil comprenant : une structure de support; une partie mobile; un ensemble actionneur configuré pour déplacer la partie mobile par rapport à la structure de support; un connecteur flexible plat destiné à établir des connexions électriques avec la partie mobile, le connecteur flexible étant relié à une extrémité à la partie mobile et présentant une courbure autour d'un axe sensiblement parallèle à une surface principale du connecteur flexible; et un élément de positionnement configuré pour positionner la courbure par rapport à la partie mobile
PCT/GB2022/052939 2021-11-18 2022-11-18 Appareil doté d'un connecteur flexible WO2023089334A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB2116679.8A GB202116679D0 (en) 2021-11-18 2021-11-18 Component for camera assembly
GB2116679.8 2021-11-18

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WO2023089334A1 true WO2023089334A1 (fr) 2023-05-25

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011104518A1 (fr) 2010-02-26 2011-09-01 Cambridge Mechatronics Limited Appareil d'actionnement à alliage à mémoire de forme
US20130182325A1 (en) * 2010-04-30 2013-07-18 Nidec Sankyo Corporation Optical unit with shake correcting function
WO2013175197A1 (fr) 2012-05-25 2013-11-28 Cambridge Mechatronics Limited Appareil d'actionnement à alliage à mémoire de forme
US20180284476A1 (en) * 2017-03-30 2018-10-04 Nidec Sankyo Corporation Optical unit with shake correction function
WO2020030916A1 (fr) 2018-08-07 2020-02-13 Cambridge Mechatronics Limited Détection 3d améliorée
WO2020074899A1 (fr) 2018-10-10 2020-04-16 Cambridge Mechatronics Limited Actionneurs en amf pour stabilisation d'image optique
US20210278689A1 (en) * 2020-03-04 2021-09-09 Nidec Sankyo Corporation Optical unit with shake correction function

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011104518A1 (fr) 2010-02-26 2011-09-01 Cambridge Mechatronics Limited Appareil d'actionnement à alliage à mémoire de forme
US20130002933A1 (en) * 2010-02-26 2013-01-03 Cambridge Mechatronics Limited Sma actuation apparatus
US20130182325A1 (en) * 2010-04-30 2013-07-18 Nidec Sankyo Corporation Optical unit with shake correcting function
WO2013175197A1 (fr) 2012-05-25 2013-11-28 Cambridge Mechatronics Limited Appareil d'actionnement à alliage à mémoire de forme
US20180284476A1 (en) * 2017-03-30 2018-10-04 Nidec Sankyo Corporation Optical unit with shake correction function
WO2020030916A1 (fr) 2018-08-07 2020-02-13 Cambridge Mechatronics Limited Détection 3d améliorée
WO2020074899A1 (fr) 2018-10-10 2020-04-16 Cambridge Mechatronics Limited Actionneurs en amf pour stabilisation d'image optique
US20210278689A1 (en) * 2020-03-04 2021-09-09 Nidec Sankyo Corporation Optical unit with shake correction function

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