WO2019109734A1 - 光学组件、摄像模组和具有摄像模组的智能设备 - Google Patents
光学组件、摄像模组和具有摄像模组的智能设备 Download PDFInfo
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- WO2019109734A1 WO2019109734A1 PCT/CN2018/110474 CN2018110474W WO2019109734A1 WO 2019109734 A1 WO2019109734 A1 WO 2019109734A1 CN 2018110474 W CN2018110474 W CN 2018110474W WO 2019109734 A1 WO2019109734 A1 WO 2019109734A1
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- Prior art keywords
- fixing
- fixing portion
- ground
- fixed
- outer frame
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- 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
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- 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
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- 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
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- 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
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
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- 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
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0015—Movement of one or more optical elements for control of motion blur by displacing one or more optical elements normal to the optical axis
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- 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
- G03B2205/0076—Driving means for the movement of one or more optical element using shape memory alloys
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- 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
- G03B2217/00—Details of cameras or camera bodies; Accessories therefor
- G03B2217/002—Details of arrangement of components in or on camera body
Definitions
- the present application relates to an optical component, a camera module having the optical component, and a smart device having the camera module.
- the camera module on the existing smart device basically adopts the motor mechanism to drive the longitudinal movement of the lens to realize the auto focus, but the motor carrier needs a certain motion stroke to drive the lens for the longitudinal movement, so the longitudinal direction of the lens needs to be in the smart device.
- the movement leaves room for reservation.
- the motor carrier needs a certain driving force of the magnet driving coil to drive the lens to realize the longitudinal movement.
- the magnet occupies a large volume inside the motor, and for the thrust to reach a certain value, the volume of the magnet is hard to be reduced again. Therefore, it is necessary to improve the motor structure and reduce the motor without reducing the volume of the magnet. The volume, which in turn reduces the size of the camera module.
- the shape memory alloy (SMA) wire can be heated to eliminate deformation at lower temperatures and restore its original shape before deformation, so that the SMA wire can be used instead of the motor to drive the lens for motion.
- the SMA wire has a smaller volume, which can effectively reduce the overall size of the module and facilitate the miniaturization of the module.
- the present application is directed to a camera module and a smart device having the same, which are expected to have a small volume and enable autofocus and optical image stabilization under the driving of the SMA wire.
- an optical assembly comprising: a lens module having an outer frame, the outer frame including four sides divided by an angular range, the lens module including a first support portion on each side of the outer frame And a second support portion, the first support portion and the second support portion of each side are located at a set of diagonal regions of the outer frame; and the fixing device is disposed at another set of diagonal regions of the outer frame of the lens module, fixed
- the device has a first power fixing portion corresponding to the first supporting portion and a first ground fixing portion, and a second power fixing portion corresponding to the second supporting portion on a fixing surface respectively corresponding to each side of the outer frame And a second ground fixing portion.
- the optical assembly further includes a base disposed under the lens module for supporting the lens module and fixing the fixing device.
- first support portion and the second support portion are integrally formed on the outer frame of the lens module.
- the positions of the first support portion, the second support portion, the first power fixing portion, the first ground fixing portion, the second power fixing portion, and the second ground fixing portion are set such that: Forming a first connection between a first support position on the support portion and a fixed position on the first power supply fixing portion and a second support position on the first support portion and a fixed position on the first ground wire fixing portion a first set of lines connected to the second line, a third support position on the second support portion and a fixed position on the second power supply fixing portion, and a fourth support position and a second ground line on the second support portion
- a second set of wires including a third wire and a fourth wire are formed between the fixed positions on the fixing portion, and the first group of wires and the second group of wires intersect but are not in contact with each other.
- the positions of the first support portion, the second support portion, the first power fixing portion, the first ground fixing portion, the second power fixing portion, and the second ground fixing portion are set such that: The connection and the second connection are parallel to each other, and the third connection and the fourth connection are parallel to each other.
- the first support location and the second support location are spaced apart from the corresponding sides of the outer frame by a distance different from the third support location and the fourth support location from the corresponding side of the outer frame the distance.
- the fixing position on the first power fixing portion and the fixing position on the first ground fixing portion are separated from the fixing surface by a distance different from the second power fixing portion on each fixing surface of the fixing device.
- the fixed position and the fixed position on the second ground fixing portion are separated from the fixed surface by a distance.
- At least the first support portion of the first support portion and the second support portion is a winding portion, and the winding structure of the winding portion is disposed at a position corresponding to the first support position and the second support position.
- the winding portion has a winding structure parallel to the optical axis.
- the winding portion has a winding structure that is perpendicular to the optical axis.
- first support portion and the second support portion are both winding portions and are formed by two portions on the same shaft member parallel to the optical axis, the shaft members being disposed to extend outward from corresponding sides of the outer frame In the support.
- the winding portion has a T-shaped or work-shaped winding structure.
- At least the first support portion of the first support portion and the second support portion is a movable end fixing portion.
- the movable end fixing portion includes a first movable end fixed position and a second movable end fixed position, and the first movable end fixed position and the second movable end fixed position respectively correspond to the first support position and the second support position .
- the interior of the movable end fixing portion further includes a conductive member disposed between the first movable end fixed position and the second movable end fixed position.
- the fixing device includes: a first power fixing end and a first ground fixing end, and the first power fixing portion and the first ground fixing portion are respectively disposed at the first power fixing end and the first ground fixing end And/or the second power fixing end and the second ground fixing end, the second power fixing portion and the second ground fixing portion are respectively disposed on the second power fixing end and the second ground fixing end.
- the first power fixed end and the second power fixed end are different power fixed ends.
- the first ground fixed end and the second ground fixed end are the same ground fixed end.
- the first ground fixed end and the second ground fixed end are different ground fixed ends.
- the same ground fixed end is located between the first power fixed end and the second power fixed end.
- the fixing device includes: a first fixing member, the first power fixing portion and the first ground fixing portion are electrically insulated from each other in the first fixing member, and/or the second fixing member, the second power source The fixing portion and the second ground fixing portion are fixed to each other in the second fixing member in electrical insulation.
- first support portion, the second support portion, the first power source fixing portion, the first ground wire fixing portion, the second power source fixing portion, and the second ground wire fixing portion corresponding to each side of the outer frame
- the first support portion, the second support portion, the first power source fixing portion, the first ground wire fixing portion, the second power source fixing portion, and the second ground wire fixing portion are disposed symmetrically with respect to the adjacent side faces.
- the distance between the first support portion on each side of the outer frame and the first power supply fixing portion and the first ground wire fixing portion on the corresponding fixing surface of the fixing device is different from each of the outer frames
- the second support portion on the side is spaced apart from the second power supply fixing portion and the second ground wire fixing portion on the corresponding fixing surface of the fixing device by the same distance.
- the distance between the first support portion on each side of the outer frame and the first power supply fixing portion and the first ground wire fixing portion on the corresponding fixing surface of the fixing device is different from each of the outer frames
- the distance between the second support portion on the side surface and the second power supply fixing portion and the second ground wire fixing portion on the corresponding fixing surface of the fixing device is different.
- Another aspect of the present application provides a camera module including the optical component of any of the above embodiments.
- the camera module further includes: an SMA wire disposed around the outer frame of the camera module for driving the camera module to move in multiple directions.
- the SMA wires each include a first SMA wire and a second SMA wire, the movable ends of the first SMA wire and the second SMA wire being respectively by the first support portion and the second support portion Supporting, the two fixed ends of the first SMA wire are respectively fixed to the first power fixing portion and the first ground fixing portion, and the two fixed ends of the second SMA wire are respectively fixed to the second power fixing portion and the second ground fixing unit.
- a smart device including the camera module in any of the above embodiments.
- the optical component, the camera module and the smart device provided according to the present application have a small volume and can easily realize autofocus and optical image stabilization.
- FIG. 1A shows a perspective view of an optical assembly in accordance with an exemplary embodiment of the present application when an SMA wire is provided;
- FIG. 1B illustrates a perspective view of an optical assembly in accordance with another exemplary embodiment of the present application when an SMA wire is provided;
- FIG. 1B illustrates a perspective view of an optical assembly in accordance with another exemplary embodiment of the present application when an SMA wire is provided;
- FIG 2 is a partial enlarged view of the fixing device in the embodiment shown in Figure 1A;
- FIG. 3A is a schematic view showing a winding portion in the embodiment shown in FIG. 1A;
- FIG. 3B is a schematic view showing a winding portion in the embodiment shown in FIG. 1B;
- FIG. 4A shows a schematic view of a winding shape in accordance with an exemplary embodiment of the present application
- FIG. 4B shows a schematic view of a winding shape according to another exemplary embodiment of the present application.
- FIG. 5 illustrates a top view of an optical assembly in accordance with an exemplary embodiment of the present application when an SMA wire is provided;
- FIG. 6A illustrates a perspective view of an optical assembly in accordance with yet another exemplary embodiment of the present application when an SMA wire is provided;
- Figure 6B is a partial enlarged view of the movable end fixing member of the embodiment shown in Figure 6A;
- FIG. 6C is a schematic view showing the internal structure of the movable end fixing member in the embodiment shown in FIG. 6A;
- FIG. 7 illustrates a perspective view of an optical assembly in accordance with still another exemplary embodiment of the present application when an SMA wire is provided;
- FIG. 8 illustrates a perspective view of an optical assembly in accordance with still another exemplary embodiment of the present application when an SMA wire is provided;
- FIG. 9A illustrates a perspective view of an optical assembly in accordance with still another exemplary embodiment of the present application when an SMA wire is provided;
- Figure 9B shows a side view of one side according to the embodiment shown in Figure 9A;
- Fig. 10 schematically shows a perspective view of an optical component according to an embodiment of the present application when an SMA wire is wound.
- first, second, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature.
- first subject discussed below may also be referred to as a second subject, without departing from the teachings of the present application.
- FIG. 1A illustrates a perspective view of an optical assembly in accordance with an exemplary embodiment of the present application when an SMA wire is provided.
- an optical assembly includes a lens module 10, a base 20, and a fixture 30.
- the SMA wire 40 is also mounted to the optical assembly before the optical assembly is assembled to the smart device.
- the lens module 10 includes a lens 11 and a rectangular outer frame 12 that surrounds the lens 11.
- the rectangular outer frame 12 has four sides. In the perspective view shown in Fig. 1A, the structural arrangement of the two sides of the outer frame 12 can be seen. It should be understood that similar structural arrangements are also present on the other two sides of the outer frame 12, not shown in Figure 1A.
- Each side surface of the outer frame 12 includes two winding portions, that is, a first winding portion 13 and a second winding portion 14, and the first winding portion 13 and the second winding portion 14 of each side surface are both Located in a set of diagonal regions 12A of the outer frame 12.
- the first winding portion 13 and the second winding portion 14 may be integrally formed on the outer frame 12 of the lens module 10.
- the base 20 is disposed below the lens module 10 for supporting the lens module 10.
- the lens module 10 is disposed substantially centrally on the base 20. When driven, the lens module 10 is movable along the optical axis of the lens 11 under the support of the base 20 and in a plane perpendicular to the optical axis.
- the driving and driving movement thereof will be described in detail in connection with the structure of the optical component of the present application.
- the fixture 30 is disposed in another set of diagonal regions 12B of the outer frame 12 of the lens module 10.
- the fixture 30 is fixed to the base 20.
- the fixing device 30 has fixing faces respectively corresponding to each side of the outer frame 12, that is, the fixing device 30 has four fixing faces respectively corresponding to the four side faces of the outer frame 12.
- the figure shows that the two fixing faces located at each of the diagonal regions 12B are integrally formed in an L shape, alternatively, the two fixing faces located at each of the diagonal regions 12B may be completely separated or partially Detached.
- the fixing device 30 includes a first power fixing end 31, a ground fixing end 32, and a second power fixing end 33 on a fixing surface corresponding to each side of the outer frame 12, respectively.
- the first power source fixing portion 311 corresponding to the first winding portion 13 is disposed on the first power source fixing end 31, and the second power source fixing portion 331 corresponding to the second winding portion 14 is disposed on the second power source fixing end 33.
- the first ground wire fixing portion 321 corresponding to the first winding portion 13 and the second ground wire fixing portion 322 corresponding to the second winding portion 14 are both provided on the ground wire fixing end 32.
- the fixing device 30 including the first power fixing end 31, the ground fixing end 22, and the second power fixing end 33 is fixed to the base 20, and the first power fixing end 31, the ground fixing end 22 and the second power fixing end 33 are Each of them has an electrical connection with the base 20.
- the first power fixed end 31, the ground fixed end 32, and the second power fixed end 33 are spaced apart from each other to form electrical isolation therebetween, and the first power fixed end 31 and the second power fixed end 33 are respectively powered .
- the power fixing portion and the ground fixing portion described above may be a fixed point on the fixed end of the power source and the fixed end of the ground wire or a fixing member at a fixed point.
- first ground wire fixing portion 321 corresponding to the first winding portion 13 and the second ground wire fixing portion 322 corresponding to the second winding portion 14 are all disposed at the same ground line in FIG. 1A Fixed end 32, but both can also be placed on different ground fixed ends.
- FIG. 2 is a partial enlarged view of the fixing device 30 in the embodiment shown in FIG. 1A, which corresponds to a fixed surface of the fixing device 30.
- the ground fixed end 32 is located between the first power fixed end 31 and the second power fixed end 33, so that the first ground fixing portion 321 corresponding to the first winding portion 13 and The second ground wire fixing portions 322 corresponding to the two winding portions 14 may be sharedly disposed on the same ground wire fixing end 32.
- the first power source fixed end 31, the ground wire fixed end 32, and the second power source fixed end 33 are separated from each other by a certain distance to ensure electrical isolation from each other.
- the fixing device 30 may also include two ground fixing ends on which the first ground fixing portion 321 corresponding to the first winding portion 13 and the second corresponding to the second winding portion 14 are respectively disposed Ground wire fixing portion 322. It should be understood that the power supply fixed end and the ground fixed end may also be arranged and provided in other ways than illustrated.
- each SMA wire 40 disposed on the outside of the lens module 10 and the fixture 30.
- each SMA wire 40 has two fixed ends and one movable end.
- the two fixed ends of each SMA wire 40 (at both ends) are respectively fixed to a set of power fixing portions and a ground fixing portion, and one movable end (at the intermediate portion) is wound around the corresponding power fixing portion and The winding portion of the ground wire fixing portion.
- the first winding portion 13, the first power fixing portion 311, and the first ground fixing portion 321 are disposed such that the two ends are respectively fixed to the first power fixing portion 311 and the first ground fixing portion 321, and the movable end is disposed.
- the two line segments formed on the first winding portion 13 after the winding of the SMA wire 40 are substantially parallel.
- the first winding portion 13 has positions at which they are respectively in contact with two substantially parallel SMA line segments, which are referred to as a first winding position and a second winding position, respectively.
- first wire between the first winding position on the first winding portion 13 and the fixed position on the first power fixing portion 311 and the second winding position on the first winding portion 13 and The second lines between the fixed positions on the ground fixing portion 321 are parallel to each other.
- the second winding portion 14, the second power fixing portion 331 and the second ground fixing portion 322 are disposed such that the two ends are respectively fixed to the second power fixing portion 331 and the second ground fixing portion 322, and the movable end winding
- the two line segments formed on the second winding portion 14 after the winding of the SMA wire 40 are substantially parallel; that is, the third winding position on the second winding portion 14 and the fixing on the second power supply fixing portion 331
- the third line between the positions and the second line between the fourth winding position on the second winding portion 14 and the fixed position on the second ground fixing portion 322 are parallel to each other.
- the winding portion and the fixing portion are further disposed such that the first and second connecting lines that are parallel to each other intersect with the third and fourth connecting lines that are parallel to each other but are not in contact with each other, thereby being fixed and wound around
- the two SMA wires of the two sets of winding portions and the fixing portion are formed to intersect but not in contact with each other.
- the first winding position and the second winding position of the first winding portion 13 are the same or approximately the same as the distance from the corresponding side of the outer frame 12.
- the third winding position and the fourth winding position of the second winding portion 14 are also the same or approximately the same as the distance from the corresponding side surface of the outer frame 12. a distance between the first winding position and the second winding position of the first winding portion 13 and the corresponding side surface of the outer frame 12 and a third winding position and a fourth winding position of the second winding portion 14 and the outer frame The distance of the corresponding side of 12 is different.
- the fixed position on the first power source fixing portion 311 and the fixed position on the first ground wire fixing portion 321 are the same or approximately the same distance from the fixing surface.
- the fixed position on the second power source fixing portion 331 and the fixed position on the second ground wire fixing portion 322 are the same or approximately the same distance from the fixed surface.
- the fixed position on the first power source fixing portion 311 and the fixed position on the first ground wire fixing portion 321 are spaced apart from the fixed surface and the fixed position on the second power source fixing portion 331 and the second ground wire fixing portion 322
- the fixed position on the upper surface is different from the fixed surface.
- the winding position and/or the fixing position are set to be different from the side surface or the fixing surface by a distance such that the two SMA wires fixed and wound around the two sets of the winding portion and the fixing portion are formed to intersect but not in contact with each other.
- the lens 11 can be moved along the optical axis in the case where different SMA wires are driven by the power supply, And moving in a plane perpendicular to the optical axis.
- the first winding portion 13 and the second winding portion 14 are disposed perpendicular to the optical axis of the lens 11, and have a winding structure parallel to the optical axis.
- the winding portion itself may not be perpendicular to the optical axis, but the plane formed by the first connecting line and the second connecting line after winding may be parallel to the optical axis, that is, the first winding described later.
- the structure 131 and the second winding structure 141 are perpendicular to the optical axis.
- the outer frame 12 shown in the drawings is rectangular, the outer frame may be any suitable shape other than a rectangle as long as the position and structure of the winding portion and the fixing portion are set such that the SMA wire It can be formed to be wound in a quadrangular shape (preferably, a rectangular shape), and the four sides of the quadrilateral respectively correspond to the side faces of the outer frame in four directions, and thereby the lens module can be driven to move in the manner described below.
- the outer frame may also be curved, the curved outer surface is provided with a winder, and the winder can form a quadrilateral, preferably rectangular, with the power fixed end and the ground fixed end provided at the fixing device; for example, the fixing device can It is a circular arc type.
- the fixed end of the power supply and the fixed end of the ground wire are arranged on the outer surface of the circular arc, and the shape and size of the fixed end of the power supply and the fixed end of the ground wire are correspondingly changed, so that a rectangular-like quadrangular shape can be formed together with the winder.
- the outer frame of the lens module may have four sides divided by an angular range, and the winding portion and the corresponding fixing portion on each side may be provided to be capable of forming the above-described quadrilateral.
- the four sides divided by the angular range should be understood to mean that the center position of the outer frame is divided into four quadrants by the center point (center), and the angular range of each quadrant corresponds to one side.
- the four sides thus divided correspond to the four sides of the rectangle; for the outer frame of the circle, the four sides thus divided correspond to the four-segment quarter arc. That is, the outer frame of the lens module may be of any shape as long as the winding portion provided on each side divided by the angle and the corresponding fixing portion on the fixing device cooperate to form a desired quadrilateral structure.
- the base in the above embodiments is also not essential to the optical assembly of the present application.
- the bottom of the fixture may extend laterally out of a support to replace the base.
- FIG. 3A shows a schematic view of the winding portion in the embodiment shown in FIG. 1A.
- the first winding portion 13 and the second winding portion 14 extend perpendicularly from the side surface of the outer frame 12, thereby being perpendicular to the optical axis of the lens 11.
- a first winding structure 131 and a second winding structure 141 which are parallel to the optical axis are respectively provided.
- the first winding structure 131 and the second winding structure 141 are groove structures respectively provided on the first winding portion 13 and the second winding portion 14 for winding the SMA wire.
- the first winding structure 131 and the second winding structure 141 are respectively disposed at different distances from the side surface of the outer frame 12, whereby the fixing portion on the fixing device 30 is disposed at the same distance from the fixed surface. At this time, the two SMA wires 40 fixed and wound as described above are not in contact with each other.
- the first winding portion 13 and the second winding portion 14 shown in FIG. 3A have substantially the same length, and the first winding structure 131 and the second winding structure 141 are formed at a distance from the first winding portion 13 and Different positions of the head or distal end of the second winding portion 14.
- the structure of the winding portion is not limited thereto, and for example, the first winding portion 13 and the second winding portion 14 having different lengths may be used, and the first winding structure 131 and the second winding structure 141 are respectively formed at At the same position from the head or the distal end portion of the first winding portion and the second winding portion, as long as the first winding structure and the second winding structure are respectively formed at different distances from the side of the outer frame 12, can.
- the first winding structure 131 and the second winding structure 141 may also be formed at the same distance from the side surface of the outer frame 12, and the corresponding fixing portions on the fixing device are formed on the corresponding fixing surface. Separated by different distances.
- FIG. 1B illustrates a perspective view of an optical assembly in accordance with another exemplary embodiment of the present application when an SMA wire is provided.
- the main difference of the embodiment shown in Fig. 1B is the structure of the winding portion as compared with the embodiment shown in Fig. 1A.
- the first winding portion 15 and the second winding portion 16 in Fig. 1B have a structure similar to an L shape, the body having the winding structure being disposed parallel to the optical axis of the lens 11, and having a winding perpendicular to the optical axis Line structures 151 and 161.
- the heights of the power supply fixing end and the corresponding ground wire fixing end may be set to be different from each other, that is, the fixed position on the first power source fixing portion and the first ground wire fixing portion.
- the fixed position is different from the corresponding side of the outer frame, and the fixed position on the second power fixing portion and the fixed position on the second ground fixing portion are different from the corresponding side of the outer frame.
- the overall height of the fixed end of the power supply and the fixed end of the ground wire may be different, or the fixed positions on the fixed end of the power supply and the fixed end of the ground wire may be set at different heights.
- the shape and structure of the winding portion itself may not be perpendicular or parallel to the optical axis as long as the winding structure thereon is parallel or perpendicular to the optical axis as described in the above embodiment.
- the winding structure can be disposed at an angle with the optical axis according to actual needs, and the presence of the angle makes the SMA have higher consistency when contracting.
- Fig. 3B shows a schematic view of the winding portion in the embodiment shown in Fig. 1B.
- the main bodies of the first winding portion 15 and the second winding portion 16 are parallel to the optical axis of the lens 11, and the first winding portion 15 and the second winding portion 16 have extensions from the main body thereof.
- the first winding portion 15 and the second winding portion 16 parallel to the optical axis may be coupled to the side of the outer frame 12 by an additional connector.
- a first winding structure 151 and a second winding structure 161 perpendicular to the optical axis are respectively disposed.
- the first winding structure 151 and the second winding structure 161 are respectively disposed at different distances from the side of the outer frame 12, whereby the fixing portion on the fixing device 30 is disposed at the same distance from the fixed surface. At this time, the two SMA wires 40 fixed and wound as described above are not in contact with each other.
- the first winding structure and the second winding structure may also be formed at the same distance from the side of the outer frame 12, and the corresponding fixing portions on the fixing device are formed differently from the corresponding fixing surfaces. distance.
- the winding structures shown in Figs. 3A and 3B are all of an I-shape, that is, a structure in which both ends are wider and the middle has a certain recessed distance with respect to both ends.
- the recess formed by the recessed distance serves to accommodate the SMA wire and restricts the SMA wire from undesired movement during driving.
- a T-shaped winding structure may be employed to prevent the SMA wire from falling off during driving.
- a mushroom-like structure may be added to the winding structure for limiting the position of the SMA wire and preventing the SMA wire from falling off the winder.
- the structure may also be similar to screwing the screw hole. Or insert a positioning pin into the positioning hole. There is an annular gap between the screw hole and the screw, and the annular gap is used to install the SMA wire. Since the head of the screw is relatively large, the limit effect on the SMA wire is enhanced.
- FIG. 4A and 4B illustrate two winding shapes in accordance with an exemplary embodiment of the present application. Specifically, FIG. 4A shows a schematic view in which the SMA wire 40 is wound in a U-shaped structure, and FIG. 4B shows a schematic view in which the SMA wire is wound in an O/ ⁇ -shaped structure.
- each SMA wire is formed into a U-shaped or O/ ⁇ -shaped double-layered wire structure after winding, and the double-layered wire structure has a better structure than the existing single-wire structure.
- the structural strength of the SMA wire is enhanced by a double-layered wire structure, and the SMA wire can carry a heavier lens, such as a glass lens, or a lens with more lenses than the current lens, further improving the quality of the entire module. .
- FIG. 5 illustrates a top view of an optical assembly in accordance with an exemplary embodiment of the present application when an SMA wire is provided. Next, the movement of the optical component according to the present application in various directions by the SMA wire will be described with reference to FIG.
- the optical assembly according to the present application provides SMA wires on each side.
- SMA wires on each side.
- the winding portions 13, 14 provided in the diagonal region 12A of the outer frame 12, and the fixing means 30 provided in the diagonal region 12B are shown in FIG.
- the winding portion shown in FIG. 5 is parallel to the optical axis, it should be understood that the winding portion may also be perpendicular to the optical axis.
- the four sides of the outer frame of the optical component are numbered counterclockwise as shown in FIG. 5 as the first side 1, the second side 2, the third side 3, and the fourth side 4, respectively.
- the plane perpendicular to the optical axis is represented by a Cartesian coordinate system, and the x and y axes are shown in FIG.
- the direction perpendicular to the xy plane can be regarded as the z-axis
- the direction perpendicular to the plane upward is the z+ direction
- the direction perpendicular to the plane downward is the z-direction.
- the four sides are divided into two groups, and the opposite two sides are a group.
- the first side 1 and the third side 3 are a group for controlling the movement of the lens 11 in the x direction.
- the second side 2 and the fourth side 4 are a group for controlling the movement of the lens 11 in the y direction.
- the fixing device 30 is fixed to the base 20, and therefore, the fixing device 30 and the fixing portion thereon remain in position during the movement of the lens 11.
- current is applied to the two SMA wires of the third side, and the SMA wire of the third side is raised by a predetermined amount of temperature after being energized, thereby contracting by a predetermined amount. Since both ends of the SMA wire are fixed to the fixture 30, the positions of both ends of the SMA wire remain unchanged.
- the SMA line of the fourth side exerts a force in the y+ direction and drives the lens to move in the y+ direction
- the SMA line of the second side is stretched as the lens module moves in the y+ direction.
- the SMA wire of the fourth side is cooled, so that the lens module is stably maintained at the desired position and the corresponding focus or zoom function is achieved.
- the edge of the lens module supported on the base is at an appropriate distance from the fixing device, so that the lens module can be moved by an appropriate distance in the x and y directions under the driving of the SMA wire, thereby realizing Optical anti-shake function.
- the two SMA wires of each side may be disposed to be substantially symmetrical with respect to the intersection positions of the two, thereby being applied substantially
- the force applied to the winding portion is also substantially the same, whereby the axial component of the force applied by the two is substantially offset.
- the winding portion and the fixing portion are disposed such that the two SMA wires of each side cross but do not contact. That is, one of the two SMA wires on each side corresponds to the upper fixed portion and the lower winding portion, and the other corresponds to the lower fixed portion and the upper winding portion. Thus, the intersection relationship of the two SMA wires is formed.
- an SMA wire on the fixed portion of the two SMA wires on each side is applied with current. That is, a total of four fixed portions of the SMA wire are applied with current, and the energized SMA wire is heated and thereby contracted by a predetermined amount of length.
- the movable end that is wound around the winding portion collectively applies a force in the z+ direction to the winding portion, and the lens 11 is moved by a predetermined distance in the z+ direction.
- the SMA wire of the fourth side is cooled, so that the lens module is stably maintained at the desired position and the corresponding focus or zoom function is achieved.
- the SMA lines of the adjacent sides may be arranged to be substantially symmetrical with respect to the boundary line of the adjacent sides, so that substantially the same current is applied. In the case, the force applied to the winding portion is substantially canceled by the components in the x direction and the y direction.
- FIG. 6A illustrates a perspective view of a camera module in accordance with still another exemplary embodiment of the present application when an SMA wire is provided.
- a movable end fixing portion is provided on the outer frame 12 of the lens module 10 instead of the winding portion.
- a first movable end fixing portion 17 and a second movable end fixing portion 18 are provided to clamp and fix the U-shaped structure of the SMA wire, thereby avoiding The SMA wire rubs against the winder as the lens moves.
- Fig. 6B is a partial enlarged view of the movable end fixing member in the embodiment shown in Fig. 6A;
- Fig. 6C is a view showing the internal structure of the movable end fixing member in the embodiment shown in Fig. 6A.
- each of the two parallel SMA line segments formed corresponding to the U-shaped winding structure is fixed to the movable end fixing portion at at least one point near the winding structure.
- the first winding position and the second winding position of the winding portion described above may be the first fixed position and the second fixed position of the movable end fixing portion.
- the SMA wire may alternatively be a split structure at the U-shaped structure, that is, The part of the SMA wire fixed by the fixed end of the movable end can be removed.
- a structure is equivalent to dividing one SMA wire in the embodiment of FIGS. 1A to 4 into two SMA wires, and both SMA wires have one end connected to the movable end fixing portion and the other two SMA wires. One end is respectively connected to the power fixing portion and the ground fixing portion corresponding to the movable end fixing portion.
- the two SMA wires are connected between the two ends of the movable end fixing portion to be electrically connected by a common conductive element. Since the resistance of the ordinary conductive element is smaller than the resistance of the SMA wire, the ordinary conductive element is passed.
- the electrical connection can reduce the voltage divided by the SMA wire fixed at the fixed end of the movable end, reduce the power loss, and improve the power utilization.
- both the first SMA wire and the second SMA wire are two wires, and both ends of the first SMA wire are respectively fixed to the movable end and the fixed end, and the second SMA wire is also the same.
- the two SMA wires can be installed simultaneously and a slightly larger length is reserved. At the fixed end of the movable end, the required line length can be intercepted according to actual needs.
- the position of the movable end fixing portion in contact with the SMA wire may be a metal structure capable of being electrically conductive, so that the wire sandwiched inside the movable end fixing portion can be directly short-circuited, and the current flows directly from the movable end fixing portion, thereby realizing two SMA wires. The electrical connection between them forms a loop that allows the SMA wire to function properly.
- the two SMA wires fixed to the same movable end fixing portion may be separated from each other by a distance of about one wire diameter, so that two The SMA wire is better able to move in sync.
- the two SMA wires fixed to the same movable end fixing portion may also be spaced apart from each other by a greater distance so as not to contact each other to avoid friction between each other.
- the two movable end fixing portions on the same side have different sizes such that the movable end fixing position on one movable end fixing portion is spaced apart from the side surface and the movable end on the other movable end fixing portion.
- the fixed position is separated from the side by a different distance.
- FIG. 7 illustrates a perspective view of a camera module in accordance with still another exemplary embodiment of the present application when an SMA wire is provided. Similar to the embodiment shown in Fig. 6A, in the embodiment of Fig. 7, a movable end fixing portion is also employed instead of the winding portion. In contrast to the embodiment of Fig. 6A, in the embodiment of Fig. 7, similar fixing members are also employed on the fixture 30. As shown in FIG. 7, the fixing device 30 no longer includes a power fixing end and a ground fixing end that are electrically isolated from each other, but a first fixing member 34 and a second fixing member 35 are provided on the fixing device. The first power source fixing portion 311 and the first ground wire fixing portion 312 are fixed to each other in the first fixing member 34 in electrical insulation.
- the second power source fixing portion 331 and the second ground wire fixing portion 322 are fixed to each other in the second fixing member 35 in electrical insulation. That is, both ends of each SMA wire whose movable end is fixed to the movable end fixing portion are fixed by the same insulating fixing member, and the distance between the ends of the wire fixed by the fixing member may be equal to or larger than the diameter of the wire, and the SMA wire The two ends are respectively led out and electrically connected to the circuit board instead of directly connecting to the circuit board through the fixed end.
- the SMA wire can be fixed to the fixing device by glue bonding between the SMA wire and the fixing device, or the electrical connection between the SMA wire and the circuit board can be realized through the conductive component by the built-in conductive component inside the fixing device, or through other The way is to realize the electrical connection between the SMA wire and the circuit board.
- the two SMA wires that intersect are of equal or approximately equal length to avoid mutual friction of the SMA wires during movement of the lens.
- the route in which the SMA wire located above the fixed end extends downward is not limited to the case shown in the drawing.
- the two SMA wires that are crossed may also have different lengths.
- the two SMA wires that intersect may also have different lengths.
- the SMA wire drawn through the fixing member on the fixing device can be directly extended downward and electrically connected to the wiring board.
- the SMA wire which is led out by the fixing member on the fixing device is connected to the circuit board. Since the SMA wire has heat shrinkage characteristics, the SMA wire needs to be reserved during installation. A certain length to prevent the line from breaking. Alternatively, the SMA wire can also terminate in a fixture and be electrically connected by conventional wire or insert molding.
- FIG. 9A is a perspective view showing a camera module according to still another exemplary embodiment of the present application when an SMA wire is provided; and FIG. 9B is a side view showing a side view according to the embodiment shown in FIG. 9A.
- FIGS. 9A and 9B differs from the embodiment shown in FIG. 1A in that the first winding portion and the second winding portion are formed by two portions on the same shaft member 19 parallel to the optical axis, forming The shaft members of the first winding portion and the second winding portion are disposed in a support member 191 that extends outward from a corresponding side surface of the outer frame.
- the shaft member 19 and the support member 191 can be integrally formed with the lens and the outer frame 12 of the camera module by an injection molding process, thereby simplifying the manufacturing process.
- winding portion and the movable end fixing portion in the above embodiment may also be implemented as other supporting members as long as the supporting action of the movable end of the SMA wire can be provided, and the lens is driven when the SMA wire is forced by the contraction.
- the module can move as the SMA wire shrinks.
- the support position corresponds to the winding position in the embodiment described above. Therefore, in some embodiments, the first connection between the first support position on the first support portion and the fixed position on the first power supply fixing portion and the second support position on the first support portion and the first ground a second line between the fixed positions on the wire fixing portion is parallel to each other, and a third line between the third support position on the second support portion and a fixed position on the second power source fixing portion and the second support portion.
- the fourth connecting position between the fourth supporting position and the fixed position on the second ground fixing portion is parallel to each other, and the first connecting line and the second connecting line parallel to each other are parallel to the third connecting line and the fourth connecting line Lines cross but not in contact with each other.
- the first support location and the second support location are spaced apart from the corresponding sides of the outer frame by a distance
- FIG. 10 schematically shows a perspective view of an optical component according to an embodiment of the present application when an SMA wire is wound. Specifically, FIG. 10 shows that two SMA wires 40 are respectively provided on the four sides of the outer frame 12, and the fixed ends of each of the SMA wires are fixed to the fixing device 30, and the movable ends are supported on the support portions 13, 14.
- the present application also provides an embodiment of a camera module having SMA wires.
- the camera module may include: a lens module having an outer frame, a base disposed under the lens module and supporting the lens module, and an SMA wire disposed in a quadrilateral shape surrounding the outer frame of the lens module, wherein the quadrilateral
- the four sides respectively correspond to the sides of the outer frame in four directions, and on each side of the outer frame, the SMA lines each include a first SMA line and a second SMA line, wherein the first SMA line and the second SMA line are set Cross each other but not in contact.
- the structure and position of the fixing device and the support portion (including the winding portion and the movable end fixing portion) in the above embodiment may not be specifically limited, as long as the SMA disposed on the side of the outer frame of the lens module is present.
- the purpose of the present application is achieved by the quadrilateral being disposed around the outer frame of the lens module, and the two SMA wires on each side of the quadrilateral can cross each other but not in contact to enable the lens to be moved in a desired direction under different driving.
- the quadrilateral described above is rectangular.
- the first SMA wire and the second SMA wire each have a fixed end and a movable end, and the fixed end is disposed at a position corresponding to one end of each side of the outer frame, the movable The end is supported at the other end of each side of the outer frame.
- the fixed end is fixed relative to the base, and the movable end is fixed relative to the outer frame.
- the movable end drives the lens module to move relative to the base.
- At least one of the first SMA wire and the second SMA wire is folded to have two fixed ends and one movable end, at least one of the first SMA wire and the second SMA wire
- the two fixed ends are disposed in a fixed and adjacent position relative to the base.
- the folded SMA wires at both ends are formed to be substantially parallel to each other.
- the movable end of at least one of the first SMA wire and the second SMA wire is supported on an outer frame of the lens module.
- the movable end may be supported on the outer frame of the lens module by winding or fixing, and the manner in which the movable end is supported on the outer frame is not limited to winding and fixing.
- At least one of the first SMA wire and the second SMA wire is folded into two SMA wire segments, the two SMA wire segments being parallel to each other and having the same length. In various embodiments, the two SMA segments can also have different lengths.
- the SMA lines on adjacent sides of the outer frame are symmetrically disposed such that the support or support on the outer frame is applied with substantially the same current applied to achieve optical image stabilization.
- the applied force is substantially offset by the components in the x and y directions.
- the first SMA wire and the second SMA wire are disposed symmetrically to each other and have the same length so that substantially the same current is applied during focusing, The forces exerted by the bearings or supports on the frame are also substantially the same, whereby the axial component of the force applied by the two is substantially offset.
- the first SMA wire and the second SMA wire are arranged to have at least a portion that is symmetrical to each other.
- the active ends of the first SMA wire and the second SMA wire are at different distances from each side.
- the fixed ends of the first SMA wire and the second SMA wire are at different distances from each side.
- the lens module has a first support portion and a second support portion on each side of the outer frame, the first support portion and the second support portion supporting the first SMA wire and the second SMA wire, respectively.
- At least the first support portion of the first support portion and the second support portion is a winding portion, and the first SMA wire is wound around the winding portion.
- the winding portion is disposed perpendicular to the optical axis of the lens module and has a winding structure parallel to the optical axis such that the first SMA wire is wound on the winding structure parallel to the optical axis. In one embodiment, the winding portion is disposed parallel to the optical axis of the lens module and has a winding structure perpendicular to the optical axis such that the first SMA wire is wound on the winding structure perpendicular to the optical axis. In one embodiment, the winding portion has a T-shaped or work-shaped winding structure, and the first SMA wire is wound around the T-shaped or work-shaped winding structure of the winding portion.
- the first support portion of the first support portion and the second support portion is a movable end fixing portion, and the first SMA wire is fixed to the movable end fixing portion.
- the first SMA wire comprises two separate SMA wire segments, the interior of the movable end fixing portion further comprising a conductive element disposed between the two separate SMA wire segments. Since the resistivity of a common conductive component is greater than the resistivity of the SMA, the SMA wire can divide more voltage and improve power utilization.
- the first SMA wire may also include the entire SMA wire instead of the separate two SMA wire segments; in this case, no additional conductive elements need to be used in the movable end fixing portion.
- one winding portion may be replaced with a movable end fixing portion, and the other winding portion may hold a winding portion of the winding portion or other structure shown in FIG. 1A.
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Abstract
一种光学组件、具有该光学组件的摄像模组、以及具有该摄像模组的智能设备。光学组件包括:镜头模块(10),具有外框架(12),外框架(12)包括按照角度范围划分的四个侧面,镜头模块(10)在外框架(12)的每个侧面上均包括第一支承部(13)和第二支承部(14),每个侧面的第一支承部(13)和第二支承部(14)均位于外框架(12)的一组对角区域(12A);以及固定装置(30),设置在镜头模块(10)的外框架(12)的另一组对角区域(12B),固定装置(30)在分别与外框架(12)的每个侧面对应的固定面上均具有与第一支承部(13)对应的第一电源固定部(311)和第一地线固定部(321)、以及与第二支承部(14)对应的第二电源固定部(331)和第二地线固定部(322)。
Description
相关申请的交叉引用
本申请要求于2017年12月8日向中国国家知识产权局提交的第201711299057.6号中国专利申请和第201721700067.1号中国专利申请的优先权,上述申请的全部内容通过引用并入本文。
本申请涉及光学组件、具有光学组件的摄像模组和具有摄像模组的智能设备。
现有的智能设备上的摄像模组基本上都是通过马达机构带动镜头纵向运动来实现自动对焦,但是马达载体带动镜头进行纵向运动需要一定的运动行程,因此在智能设备中需要为镜头的纵向运动留出预留空间。以智能手机为例,随着智能手机越做越薄,手机中能够留给摄像模组的可利用空间越来越小,而马达载体需要磁石驱动线圈产生一定的推力才能够带动镜头实现纵向运动,其中,磁石在马达内部占据较大的体积,而且为了推力能够达到一定值,磁石的体积很难再减小,因此,需要在不减小磁石体积的前提下,改善马达结构,减小马达的体积,进而减小手机摄像模组的体积。
形状记忆合金(SMA)线能够升温后能够消除在较低温度下发生的形变,恢复其变形前的原始形状,因而可通过SMA线代替马达驱动镜头进行运动。SMA线相对于传统的马达而言具有更小的体积,能够有效降低模组的整体尺寸,利于模组的小型化发展。
发明内容
本申请旨在提出一种摄像模组和具有该摄像模组的智能设备,期 望具有较小的体积并能够在SMA线的驱动下实现自动对焦和光学防抖。
根据本申请的一个方面,提供了一种光学组件,包括:镜头模块,具有外框架,外框架包括按照角度范围划分的四个侧面,镜头模块在外框架的每个侧面上均包括第一支承部和第二支承部,每个侧面的第一支承部和第二支承部均位于外框架的一组对角区域;以及固定装置,设置在镜头模块的外框架的另一组对角区域,固定装置在分别与外框架的每个侧面对应的固定面上均具有与第一支承部对应的第一电源固定部和第一地线固定部、以及与第二支承部对应的第二电源固定部和第二地线固定部。
在一个实施方式中,光学组件还包括:底座,设置在镜头模块的下方,用于支撑镜头模块,并固定固定装置。
在一个实施方式中,第一支承部和第二支承部一体地形成在镜头模块的外框架上。
在一个实施方式中,第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部、第二地线固定部的位置被设置为使得:第一支承部上的第一支承位置与第一电源固定部上的固定位置之间和第一支承部上的第二支承位置与第一地线固定部上的固定位置之间形成包括第一连线和第二连线的第一组连线,第二支承部上的第三支承位置与第二电源固定部上的固定位置之间和第二支承部上的第四支承位置与第二地线固定部上的固定位置之间形成包括第三连线和第四连线的第二组连线,第一组连线和第二组连线交叉但彼此不接触。
在一个实施方式中,第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部、第二地线固定部的位置被设置为使得:第一连线和第二连线相互平行,第三连线和第四连线相互平行。
在一个实施方式中,在外框架的每个侧面上,第一支承位置和第二支承位置与外框架的对应侧面相隔的距离不同于第三支承位置和第四支承位置与外框架的对应侧面相隔的距离。
在一个实施方式中,在固定装置的每个固定面上,第一电源固定部上的固定位置和第一地线固定部上的固定位置与固定面相隔的距离 不同于第二电源固定部上的固定位置和第二地线固定部上的固定位置与固定面相隔的距离。
在一个实施方式中,第一支承部和第二支承部中的至少第一支承部是绕线部,绕线部的绕线结构设置在第一支承位置和第二支承位置对应的位置处。
在一个实施方式中,绕线部具有平行于光轴的绕线结构。
在一个实施方式中,绕线部具有垂直于光轴的绕线结构。
在一个实施方式中,第一支承部和第二支承部都是绕线部,并由平行于光轴的同一轴部件上两个部分形成,轴部件设置在从外框架的对应侧面向外延伸的支撑件中。
在一个实施方式中,绕线部具有T形或工形的绕线结构。
在一个实施方式中,第一支承部和第二支承部中的至少第一支承部是活动端固定部。
在一个实施方式中,活动端固定部包括第一活动端固定位置和第二活动端固定位置,第一活动端固定位置和第二活动端固定位置分别对应于第一支承位置和第二支承位置。
在一个实施方式中,活动端固定部的内部还包括导电元件,导电元件设置在第一活动端固定位置和第二活动端固定位置之间。
在一个实施方式中,固定装置包括:第一电源固定端和第一地线固定端,第一电源固定部和第一地线固定部分别设置在第一电源固定端和第一地线固定端上;和/或第二电源固定端和第二地线固定端,第二电源固定部和第二地线固定部分别设置在第二电源固定端和第二地线固定端上。
在一个实施方式中,第一电源固定端和第二电源固定端是不同的电源固定端。
在一个实施方式中,第一地线固定端和第二地线固定端是同一地线固定端。
在一个实施方式中,第一地线固定端和第二地线固定端是不同的地线固定端。
在一个实施方式中,同一地线固定端位于第一电源固定端和第二 电源固定端之间。
在一个实施方式中,固定装置包括:第一固定件,第一电源固定部和第一地线固定部彼此电绝缘地固定在第一固定件中,和/或第二固定件,第二电源固定部和第二地线固定部彼此电绝缘地固定在第二固定件中。
在一个实施方式中,对应于外框架的每个侧面的第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部和第二地线固定部与对应于相邻侧面的第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部和第二地线固定部对称设置。
在一个实施方式中,外框架的每个侧面上的第一支承部与固定装置的对应固定面上的第一电源固定部和第一地线固定部之间相隔的距离与外框架的每个侧面上的第二支承部与固定装置的对应固定面上的第二电源固定部和第二地线固定部之间相隔的距离相同。
在一个实施方式中,外框架的每个侧面上的第一支承部与固定装置的对应固定面上的第一电源固定部和第一地线固定部之间相隔的距离与外框架的每个侧面上的第二支承部与固定装置的对应固定面上的第二电源固定部和第二地线固定部之间相隔的距离不同。
本申请的另一方面提供了一种摄像模组,包括上述任一实施方式中的光学组件。
在一个实施方式中,摄像模组还包括:SMA线,围绕摄像模组的外框架设置,用于驱动摄像模组在多个方向上移动。
在一个实施方式中,在外框架的每个侧面,SMA线均包括第一SMA线和第二SMA线,第一SMA线和第二SMA线的活动端分别由第一支承部和第二支承部支承,第一SMA线的两个固定端分别固定于第一电源固定部和第一地线固定部,第二SMA线的两个固定端分别固定于第二电源固定部和第二地线固定部。
根据本申请的又一方面,提供了一种智能设备,包括上述任一实施方式中的摄像模组。
根据本申请提供的光学组件、摄像模组和智能设备,具有较小的 体积,并能方便地实现自动对焦和光学防抖。
在参考附图中示出示例性实施例。本文中公开的实施例和附图应被视作说明性的,而非限制性的。
图1A示出了根据本申请一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图1B示出了根据本申请另一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图2是图1A所示的实施方式中的固定装置的局部放大图;
图3A示出了图1A所示的实施方式中的绕线部的示意图;
图3B示出了图1B所示的实施方式中的绕线部的示意图;
图4A示出了根据本申请一个示例性实施方式的绕线形状的示意图;
图4B示出了根据本申请另一个示例性实施方式的绕线形状的示意图;
图5示出了根据本申请一个示例性实施方式的光学组件在提供了SMA线时的俯视图;
图6A示出了根据本申请又一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图6B示出了图6A所示的实施方式的中的活动端固定件的局部放大图;
图6C示出了图6A所示的实施方式的中的活动端固定件的内部结构示意图;
图7示出了根据本申请再一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图8示出了根据本申请又一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图9A示出了根据本申请再一个示例性实施方式的光学组件在提供了SMA线时的立体图;
图9B示出了根据9A所示的实施方式在一个侧面的侧视图;
图10示意性地示出了根据本申请实施方式的光学组件在缠绕了SMA线时的透视图。
为了更好地理解本申请,将参考附图对本申请的各个方面做出更详细的说明。应理解,这些详细说明只是对本申请的示例性实施方式的描述,而非以任何方式限制本申请的范围。在说明书全文中,相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意,在本说明书中,第一、第二等的表述仅用于将一个特征与另一个特征区分开来,而不表示对特征的任何限制。因此,在不背离本申请的教导的情况下,下文中讨论的第一主体也可被称作第二主体。
在附图中,为了便于说明,已稍微夸大了物体的厚度、尺寸和形状。附图仅为示例而并非严格按比例绘制。
还应理解的是,用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”,当在本说明书中使用时表示存在所陈述的特征、整体、步骤、操作、元件和/或部件,但不排除存在或附加有一个或多个其它特征、整体、步骤、操作、元件、部件和/或它们的组合。此外,当诸如“...中的至少一个”的表述出现在所列特征的列表之后时,修饰整个所列特征,而不是修饰列表中的单独元件。此外,当描述本申请的实施方式时,使用“可以”表示“本申请的一个或多个实施方式”。并且,用语“示例性的”旨在指代示例或举例说明。
如在本文中使用的,用语“基本上”、“大约”以及类似的用语用作表近似的用语,而不用作表程度的用语,并且旨在说明将由本领域普通技术人员认识到的、测量值或计算值中的固有偏差。
除非另外限定,否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是,用语(例如在常用词典中定义的用语)应被解释 为具有与它们在相关技术的上下文中的含义一致的含义,并且将不被以理想化或过度正式意义解释,除非本文中明确如此限定。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
图1A示出了根据本申请一个示例性实施方式的光学组件在提供了SMA线时的立体图。
如图1A所示,根据本申请一个示例性实施方式的光学组件包括镜头模块10、底座20和固定装置30。在光学组件被装配到智能设备之前,还要将SMA线40安装到光学组件上。
镜头模块10包括镜头11和包围镜头11的矩形的外框架12。矩形的外框架12具有四个侧面。在图1A所示的立体图中,可以看到外框架12的两个侧面的结构设置。应当理解,在图1A中未示出的外框架12的另外两个侧面上,也具有类似的结构设置。
外框架12的每个侧面上均包括两个绕线部,即,第一绕线部13和第二绕线部14,每个侧面的第一绕线部13和第二绕线部14均位于外框架12的一组对角区域12A。第一绕线部13和第二绕线部14可一体地形成在镜头模块10的外框架12上。
底座20设置在镜头模块10的下方,用于支撑镜头模块10。镜头模块10在底座20上大致居中地设置。在受到驱动时,镜头模块10可在底座20的支撑下沿镜头11的光轴移动,以及在垂直于光轴的平面上移动。在下文中,将结合本申请的光学组件的结构对其驱动和在驱动下的移动进行详细描述。
固定装置30设置在镜头模块10的外框架12的另一组对角区域12B。固定装置30固定在底座20上。如图所示,固定装置30具有分别与外框架12的每个侧面对应的固定面,也就是,固定装置30具有与外框架12的四个侧面分别对应的四个固定面。在每个对角区域12B处具有两个固定面。尽管图中示出了位于每个对角区域12B处的两个固定面整体形成为L形,但是可选地,位于每个对角区域12B处的两个固定面也可以是完全分离或者部分分离的。
在分别与外框架12的每个侧面对应的固定面上,固定装置30包括第一电源固定端31、地线固定端32和第二电源固定端33。与第一绕线部13对应的第一电源固定部311设置在第一电源固定端31上,与第二绕线部14对应的第二电源固定部331设置在第二电源固定端33上。与第一绕线部13对应的第一地线固定部321和与第二绕线部14对应的第二地线固定部322均设置在地线固定端32上。包括第一电源固定端31、地线固定端22、第二电源固定端33的固定装置30固定于底座20,并且第一电源固定端31、地线固定端22和第二电源固定端33中的每个与底座20具有电连接。第一电源固定端31、地线固定端32和第二电源固定端33彼此是隔开的,从而彼此之间形成电隔离,并且第一电源固定端31和第二电源固定端33被分别供电。上述的电源固定部和地线固定部可以是电源固定端和地线固定端上的固定点或者是在固定点处的固定元件。
应当理解,尽管图1A中示出了与第一绕线部13对应的第一地线固定部321和与第二绕线部14对应的第二地线固定部322都设置在相同的地线固定端32上,但是二者也可分别设置在不同的地线固定端上。
图2是图1A所示的实施方式中的固定装置30的局部放大图,该局部放大图对应于固定装置30的一个固定面。从图2中可以看到,地线固定端32位于第一电源固定端31和第二电源固定端33之间,从而与第一绕线部13对应的第一地线固定部321和与第二绕线部14对应的第二地线固定部322可共享地设置在同一地线固定端32上。第一电源固定端31、地线固定端32和第二电源固定端33彼此相隔一定的距离,以确保相互之间的电隔离。如上所述,固定装置30也可包括两个地线固定端,在其上分别设置与第一绕线部13对应的第一地线固定部321和与第二绕线部14对应的第二地线固定部322。应当理解,电源固定端和地线固定端也可以不同于图示的其他方式设置和提供。
图1A和图2还示出了设置在镜头模块10和固定装置30的外侧的SMA线40。在示出的实施方式中,每根SMA线40具有两个固定端和一个活动端。每根SMA线40的两个固定端(位于两个端部)分 别固定于一组电源固定部和地线固定部,一个活动端(位于中间部)绕设在对应于该组电源固定部和地线固定部的绕线部上。
第一绕线部13、第一电源固定部311和第一地线固定部321被设置为使得:两端分别固定于第一电源固定部311和第一地线固定部321、活动端绕设在第一绕线部13上的SMA线40在绕线后形成的两个线段大致平行。第一绕线部13上具有将分别与两根大致平行的SMA线段接触的位置,分别称为第一绕线位置和第二绕线位置。也就是,第一绕线部13上的第一绕线位置与第一电源固定部311上的固定位置之间的第一连线和第一绕线部13上的第二绕线位置与第一地线固定部321上的固定位置之间的第二连线相互平行。第二绕线部14、第二电源固定部331和第二地线固定部322被设置为使得:两端分别固定于第二电源固定部331和第二地线固定部322、活动端绕设在第二绕线部14上的SMA线40在绕线后形成的两个线段大致平行;也就是,第二绕线部14上的第三绕线位置与第二电源固定部331上的固定位置之间的第三连线和第二绕线部14上的第四绕线位置与第二地线固定部322上的固定位置之间的第二连线相互平行。上述绕线部和固定部还被设置为使得相互平行的第一连线和第二连线与相互平行的第三连线和第四连线交叉但彼此不接触,从而固定和绕设在上述两组绕线部和固定部的两根SMA线形成为交叉但彼此不接触。
例如,在外框架12的每个侧面上,第一绕线部13的第一绕线位置和第二绕线位置与外框架12的该对应侧面的距离相同或近似相同。第二绕线部14的第三绕线位置和第四绕线位置与外框架12的该对应侧面的距离也相同或近似相同。第一绕线部13的第一绕线位置和第二绕线位置与外框架12的该对应侧面的距离与第二绕线部14的第三绕线位置和第四绕线位置与外框架12的该对应侧面的距离不同。
又例如,在固定装置30的每个固定面上,第一电源固定部311上的固定位置和所述第一地线固定部321上的固定位置与该固定面相隔的距离相同或近似相同。第二电源固定部331上的固定位置和第二地线固定部322上的固定位置与该固定面相隔的距离相同或近似相同。第一电源固定部311上的固定位置和所述第一地线固定部321上的固 定位置与该固定面相隔的距离与第二电源固定部331上的固定位置和第二地线固定部322上的固定位置与该固定面相隔的距离不同。
通过上述绕线位置和/或固定位置设置为与侧面或固定面相隔不同的距离,使得固定和绕设在两组绕线部和固定部的两根SMA线形成为交叉但彼此不接触。在固定和绕设在两组绕线部和固定部的两根SMA线形成为交叉但彼此不接触的情况下,在不同的SMA线被供电驱动的情况下,镜头11可实现沿光轴移动,以及在垂直于光轴的平面上移动。
在图1A示出的实施方式中,第一绕线部13和第二绕线部14垂直于透镜11的光轴设置,并具有平行于光轴的绕线结构。可选地,绕线部本身也可以不垂直于光轴,而是绕线后第一连线和第二连线所形成的平面要平行于光轴,即后文所述的第一绕线结构131和第二绕线结构141中心垂直于光轴。
应当理解,尽管在附图中示出的外框架12是矩形的,但是外框架也可以是矩形以外的其他任意的适当形状,只要绕线部和固定部的位置和结构被设置为使得SMA线能形成为呈四边形(优选地,呈矩形)缠绕,四边形的四条边分别对应于外框架在四个方向上的侧面,并且由此能够带动镜头模块按照下文描述的方式运动即可。例如,外框架也可以是弧形,弧形外表面设置绕线器,并且绕线器能够和设置于固定装置的电源固定端和地线固定端形成四边形,优选矩形;再例如,固定装置可以是圆弧型,在圆弧的外表面设置电源固定端和地线固定端,电源固定端和地线固定端的形状及尺寸相应变化,从而能够与绕线器共同形成类似矩形的四边形形状。
事实上,镜头模块的外框架可具有按照角度范围划分的四个侧面,每个侧面上的绕线部和对应的固定部被设置为能够形成上述四边形即可。按角度范围划分的四个侧面应当理解为,以外框架的中心位置为中心点(圆心)划分四个象限,每个象限的角度范围对应于一个侧面。例如,对于矩形的外框架,由此划分的四个侧面对应于矩形的四条边;对于圆形的外框架,由此划分的四个侧面对应于四段四分之一圆弧。也就是说,镜头模块的外框架可以是任意形状,只要按照角度划分的 每个侧面上设置的绕线部和固定装置上的对应的固定部配合形成所需的四边形结构即可。
也应当理解,上述实施方式中的底座对于本申请的光学组件来说也不是必须的。例如,固定装置的底部可横向延伸出一个支撑部来代替底座。
图3A示出了图1A所示的实施方式中的绕线部的示意图。如图3A所示,第一绕线部13和第二绕线部14从外框架12的侧面垂直延伸,由此垂直于透镜11的光轴。在第一绕线部13和第二绕线部14上,分别设置有平行于光轴的第一绕线结构131和第二绕线结构141。例如,第一绕线结构131和第二绕线结构141是分别设置在第一绕线部13和第二绕线部14上的凹槽结构,用以供SMA线缠绕。如图所示,第一绕线结构131和第二绕线结构141分别设置在与外框架12的侧面相隔不同距离处,由此,在固定装置30上的固定部设置在距固定面相同距离时,如上文所述固定并绕设的两根SMA线40交叉而不接触。图3A中示出的第一绕线部13和第二绕线部14具有大致相同的长度,而第一绕线结构131和第二绕线结构141分别形成在距第一绕线部13和第二绕线部14的头部或远端部的不同位置处。应当理解,绕线部的结构不限于此,例如,可使用具有不同长度的第一绕线部13和第二绕线部14,第一绕线结构131和第二绕线结构141分别形成在距第一绕线部和第二绕线部的头部或远端部的相同位置处,只要第一绕线结构和第二绕线结构分别形成在与外框架12的侧面相隔不同距离处即可。在不同的实施方式中,第一绕线结构131和第二绕线结构141也可形成在与外框架12的侧面相隔相同距离处,而固定装置上的对应固定部形成在与对应的固定面相隔不同距离。
图1B示出了根据本申请另一个示例性实施方式的光学组件在提供了SMA线时的立体图。与图1A所示的实施方式相比,图1B所示的实施方式的主要区别在于绕线部的结构。图1B中的第一绕线部15和第二绕线部16具有类似于L形的结构,具有绕线结构的主体平行于透镜11的光轴设置,并具有垂直于所述光轴的绕线结构151和161。
在上述实施方式中,为了便于安装SMA线,电源固定端和对应的 地线固定端的高度可设置为彼此不同,也即,第一电源固定部上的固定位置和第一地线固定部上的固定位置距离外框架的对应侧面的距离不同,第二电源固定部上的固定位置和第二地线固定部上的固定位置距离外框架的对应侧面的距离不同。此时,可以是电源固定端和地线固定端的整体高度不同,也可以是电源固定端和地线固定端上的固定位置设置在不同高度处。
应当理解,绕线部本身的形状和结构也可并不垂直或平行于光轴,只要其上的绕线结构如以上实施方式所述平行或垂直于光轴即可。进一步地,还可根据实际需要将绕线结构设置为与光轴之间成一夹角,通过夹角的存在,使得SMA在收缩时具有更高的一致性。
图3B示出了图1B所示的实施方式中的绕线部的示意图。如图3B所示,第一绕线部15和第二绕线部16的主体平行于透镜11的光轴,并且第一绕线部15和第二绕线部16具有从其主体延伸到外框架12的侧面的连接结构。可选地,平行于光轴的第一绕线部15和第二绕线部16可通过额外的连接件连接至外框架12的侧面。在外框架12的侧面上,分别设置有垂直于光轴的第一绕线结构151和第二绕线结构161。如图所示,第一绕线结构151和第二绕线结构161分别设置在与外框架12的侧面相隔不同距离处,由此,在固定装置30上的固定部设置在距固定面相同距离时,如上文所述固定并绕设的两根SMA线40交叉而不接触。在不同的实施方式中,第一绕线结构和第二绕线结构也可形成在与外框架12的侧面相隔相同距离处,而固定装置上的对应固定部形成在与对应的固定面相隔不同距离。
图3A和3B示出的绕线结构均为工字型,即,两端较宽、中间相对于两端具有一定的凹陷距离的结构。凹陷距离构成的凹部用于容纳SMA线,并限制SMA线在驱动期间产生不期望的移动。可选地,也可采用T型的绕线结构,防止SMA线在驱动期间脱落即可。进一步地,还可在绕线结构上增加一类似蘑菇头的结构,用于限制SMA线的位置,防止SMA线从绕线器脱落,此种结构也可以是类似于向螺孔中拧螺钉,或者是向定位孔中***定位销。拧到最后螺孔和螺钉之间会存在一环形间隙,环形间隙用于安装SMA线。由于螺钉的头部比较 大,从而增强对SMA线的限位效果。
图4A和4B示出了根据本申请示例性实施方式的两种绕线形状。具体地,图4A示出了SMA线40以U形结构绕设的示意图,图4B示出了SMA线以O/α形结构绕设的示意图。
在示出的实施方式中,每根SMA线在绕线后形成为U形或O/α形的双层线结构,相对于已有的单线结构来说,双层线结构具有更好的结构强度,更高的稳定性,更小的姿势差以及更高的对焦精度等。通过双层线结构增强了SMA线的结构强度,还能够使SMA线承载更重的镜头,比如玻璃镜头,或相比于现在的镜头,具有更多镜片的镜头,进一步提高整个模组的品质。
图5示出了根据本申请一个示例性实施方式的光学组件在提供了SMA线时的俯视图。接下来,结合图5对根据本申请的光学组件在SMA线的带动下在各个方向上的移动进行描述。
如图5所示,根据本申请的光学组件在每个侧面均提供了SMA线。尽管在图5中未示出,但是根据上文的描述应当理解,在每个侧面均具有两根相互交叉但彼此不接触的SMA线,而不是仅一根SMA线。图5中示出了设置于外框架12的对角区域12A的绕线部13、14,以及设置于对角区域12B的固定装置30。尽管图5示出的绕线部平行于光轴,应当理解,绕线部也可垂直于光轴。为了便于描述,将光学组件的外框架的四个侧面如图5所示逆时针地分别编号为第一侧面1、第二侧面2、第三侧面3和第四侧面4。同时,如图5所示,将垂直于光轴的平面用直角坐标系表示,图5中示出了x和y轴。基于图5所示的坐标系,可将垂直于xy平面的方向视为z轴,垂直于该平面向上的方向为z+方向,垂直于该平面向下的方向为z-方向。
如图5所示,四个侧面被分为两组,相对的两个侧面为一组。具体地,第一侧面1和第三侧面3为一组,用于控制镜头11在x方向的运动。第二侧面2和第四侧面4为一组,用于控制镜头11在y方向的运动。
如上所述,在本申请的摄像模组中,固定装置30固定于底座20,因此,固定装置30及其上的固定部在镜头11的运动过程中保持位置 不变。当需要驱动镜头向x+方向移动时,对第三侧面的两根SMA线施加电流,第三侧面的SMA线在通电后升高预定量的温度,由此收缩预定量的长度。因为SMA线的两端固定于固定装置30,因此SMA线的两端的位置是保持不变的。在两根SMA线长度收缩时,绕设在绕线部的活动端共同对绕线部施加向x+方向的力,使镜头11向x+方向移动预定的距离。在第三侧面的SMA线施加向x+方向的力并带动镜头向x+方向移动的情况下,第一侧面的SMA线随着镜头模块向x+方向的移动而被拉伸。当镜头模块到达预期位置并保持稳定状态后,对第三侧面的SMA线进行降温,从而使镜头模块稳定地保持在预期位置并实现相应的对焦或变焦功能。
类似地,当需要驱动镜头模块向x-方向移动时,对第一侧面的SMA线施加电流,使第一侧面的SMA线收缩而带动镜头向x-方向移动。此时,第三侧面的SMA线随着镜头模块向x-方向的移动而被拉伸。
当需要驱动镜头向y+方向移动时,对第四侧面的两根SMA线施加电流,第四侧面的SMA线在通电后升高预定量的温度,由此收缩预定量的长度。因为SMA线的两端固定于固定装置30,因此SMA线的两端的位置是保持不变的。在两根SMA线长度收缩时,绕设在绕线部的活动端共同对绕线部施加向y+方向的力,使镜头11向y+方向移动预定的距离。在第四侧面的SMA线施加向y+方向的力并带动镜头向y+方向移动的情况下,第二侧面的SMA线随着镜头模块向y+方向的移动而被拉伸。当镜头模块到达预期位置并保持稳定状态后,对第四侧面的SMA线进行降温,从而使镜头模块稳定地保持在预期位置并实现相应的对焦或变焦功能。
类似地,当需要驱动镜头模块向y-方向移动时,对第二侧面的SMA线施加电流,使第二侧面的SMA线收缩而带动镜头向y-方向移动。此时,第四侧面的SMA线随着镜头模块向y-方向的移动而被拉伸。
应当理解,尽管图5中未示出,支撑在底座上镜头模块的边缘与固定装置相距适量的距离,以使镜头模块在SMA线的驱动下能够在x 和y方向移动适当的距离,从而实现光学防抖的功能。
为了使镜头模块在向x方向和y方向移动时在光轴的轴向位置保持不变,每个侧面的两根SMA线可设置为相对于二者的交叉位置大致对称,从而在被施加大致相同的电流的情况下,对绕线部施加的力也大致相同,由此二者施加的力的轴向分量大致抵消。
以上描述了绕线部和固定部被设置为使每个侧面的两根SMA线交叉但不接触。也就是说,每个侧面的两根SMA线中的一根对应于靠上的固定部和靠下的绕线部设置,另一根对应于靠下的固定部和靠上的绕线部设置,由此形成两根SMA线的交叉关系。
当需要驱动镜头在z+方向上移动时,每个侧面的两根SMA线中固定部靠上的一根SMA线被施加电流。也就是,一共四根固定部靠上的SMA线被施加电流,通电的SMA线升温并由此收缩预定量的长度。在四根SMA线长度收缩时,绕设在绕线部的活动端共同对绕线部施加向z+方向的力,使镜头11向z+方向移动预定的距离。当镜头模块到达预期位置并保持稳定状态后,对第四侧面的SMA线进行降温,从而使镜头模块稳定地保持在预期位置并实现相应的对焦或变焦功能。
类似地,当需要驱动镜头模块向z-方向移动时,对每个侧面的两个SMA线中固定部靠下的一根SMA线施加电流,使通电的SMA线收缩而共同带动镜头向z-方向移动。由此,可实现镜头的自动对焦功能。
为了使镜头模块在向z方向移动时在x方向和y方向的位置保持不变,相邻侧面的SMA线可设置为相对于相邻侧面的交界线大致对称,从而在被施加大致相同的电流的情况下,对绕线部施加的力在x方向和y方向的分量大致抵消。
图6A示出了根据本申请又一个示例性实施方式的摄像模组在提供了SMA线时的立体图。与图1A所示的实施方式的区别在于,在镜头模块10的外框架12上设置了活动端固定部来代替绕线部。如图6A所示,在镜头模块10的外框架上,提供了第一活动端固定部17和第二活动端固定部18,将SMA线的U形结构夹持并固定住,由此可避免SMA线在镜头移动时与绕线器产生摩擦。
图6B示出了图6A所示的实施方式的中的活动端固定件的局部放大图;图6C示出了图6A所示的实施方式的中的活动端固定件的内部结构示意图。
在使用活动端固定部替代绕线部的情况下,相当于U形绕线结构形成的两段平行的SMA线段中的每一个SMA线段在绕线结构附近的至少一个点固定于活动端固定部。在这种情况下,上文所述的绕线部的第一绕线位置和第二绕线位置可以是活动端固定部的第一固定位置和第二固定位置。
此时,由于被活动端固定部固定在内部的SMA线通电发生的形变对于镜头的运动没有直接或积极的作用,因此,可选地,SMA线在U形结构处可以为分体结构,即,可去除SMA线被活动端固定部固定在内的部分。事实上,这样的结构相当于将图1A至图4的实施方式中的一根SMA线分成两根SMA线提供,两根SMA线均有一端连接于活动端固定部,两根SMA线的另一端分别连接于与该活动端固定部对应的电源固定部和地线固定部。
在这种情况下,两根SMA线连接于活动端固定部的两个端部之间可由普通的导电元件实现电连接,由于普通导电元件的电阻小于SMA线的电阻,因而,通过普通导电元件实现电连接能够减小被固定在活动端固定原件处的SMA线所分到的电压,减小电能损耗,提高电能利用率。
本实施例中,相当于是第一SMA线和第二SMA线均是两根线,且第一SMA线的两端分别被固定于活动端和固定端,第二SMA线也是如此。
在一个实施例中,两根SMA线可同时安装,并预留稍大的长度。在活动端固定部,可根据实际需要截取需要的线长。活动端固定部内部与SMA线接触的位置可以是能够导电的金属结构,从而使夹在活动端固定部内部的线可直接被短路,电流直接从活动端固定部流动,从而实现两根SMA线之间的电连接,形成回路,使SMA线能够正常工作。
在图6A所示的将U形结构通过活动端固定部固定的方案中,固 定于同一活动端固定部的两根SMA线之间可以彼此之间只相距大约一个线径的距离,使得两根SMA线能够更好地同步运动。可选地,固定于同一活动端固定部的两根SMA线之间也可以彼此相距更大的距离,使得彼此之间互不接触,避免相互之间的摩擦。
如图6A所示,同一侧面的两个活动端固定部具有不同的大小,从而使得一个活动端固定部上的活动端固定位置与该侧面相隔的距离和另一个活动端固定部上的活动端固定位置与该侧面相隔的距离不同。
图7示出了根据本申请再一个示例性实施方式的摄像模组在提供了SMA线时的立体图。与图6A所示的实施方式类似,图7的实施方式中,也采用了活动端固定部来代替绕线部。与图6A的实施方式不同的是,图7的实施方式中,在固定装置30上也采用了类似的固定部件。如图7所示,固定装置30不再包括彼此电隔离的电源固定端和地线固定端,而是在固定装置上设置第一固定件34和第二固定件35。第一电源固定部311和第一地线固定部312彼此电绝缘地固定在第一固定件34中。第二电源固定部331和第二地线固定部322彼此电绝缘地固定在第二固定件35中。也就是,活动端固定于活动端固定部的每根SMA线的两端通过同一绝缘的固定件进行固定,由该固定件固定的线两端的间距可等于或大于线的直径,并将SMA线的两端分别向外引出,并与线路板实现电连接,以代替通过固定端直接与线路板电连接的方式。SMA线与固定装置间可通过胶水粘接使SMA线被固定于固定装置,也可通过在固定装置内部内置导电元件,通过导电元件实现SMA线与线路板之间的电连接,也可通过其他方式实现SMA线与线路板之间的电连接。
在图7所示的实施方式中,交叉的两根SMA线具有相等或近似相等的长度,以避免镜头运动时SMA线的相互摩擦。当固定端通过SMA线直接与线路板实现电连接时,位于固定端上方的SMA线向下延伸的路线不限于图中示出情况。
作为一种选择,交叉的两根SMA线也可以具有不同的长度。如图8所示,交叉的两根SMA线也可以具有不同的长度。在这种情况下,通过固定装置上的固定件引出的SMA线可以直接向下延伸,并与线 路板实现电连接。
在图7和图8所示的实施方式中,通过固定装置上的固定件向外引出的SMA线与线路板相连接,由于SMA线有受热收缩的特性,因此SMA线在安装时需要预留一定的长度,以防止线会断掉。作为一种选择,SMA线也可止于固定件,并且通过常规的导线或insert molding实现电连接。
图9A示出了根据本申请再一个示例性实施方式的摄像模组在提供了SMA线时的立体图;以及图9B示出了根据9A所示的实施方式在一个侧面的侧视图。
图9A和图9B所示的实施方式与图1A所示的实施方式的区别在于,第一绕线部和第二绕线部由平行于光轴的同一轴部件19上两个部分形成,形成第一绕线部和第二绕线部的轴部件设置在从外框架的对应侧面向外延伸的支撑件191中。当第一绕线部和第二绕线部以这种方式形成时,轴部件19和支撑件191可通过注塑工艺与摄像模组的镜头和外框架12一体形成,从而简化了制造工艺。
应当理解,上述实施方式中的绕线部和活动端固定部也可实施为其他支承部件,只要能够对SMA线的活动端提供支承作用、并且在SMA线因收缩而施加力的情况下带动镜头模块随SMA线的收缩而移动即可。
在使用对SMA的活动端具有支承作用并且可在SMA线收缩时被SMA带动而移动的支承部的情况下,支承位置对应于上文描述的实施方式中的绕线位置。因此,在一些实施方式中,第一支承部上的第一支承位置与第一电源固定部上的固定位置之间的第一连线和第一支承部上的第二支承位置与第一地线固定部上的固定位置之间的第二连线相互平行,第二支承部上的第三支承位置与第二电源固定部上的固定位置之间的第三连线和第二支承部上的第四支承位置与第二地线固定部上的固定位置之间的第四连线相互平行,相互平行的第一连线和第二连线与相互平行的第三连线和第四连线交叉但彼此不接触。在一些实施方式中,在外框架的每个侧面上,第一支承位置和第二支承位置与外框架的对应侧面相隔的距离不同于第三支承位置和第四支承位置 与外框架的对应侧面相隔的距离。
图10示意性地示出了根据本申请实施方式的光学组件在缠绕了SMA线时的透视图。具体地,图10示出了在外框架12的四个侧面上分别提供有两根SMA线40,每根SMA线的固定端固定在固定装置30上,活动端支承在支承部13、14上。
根据以上描述的、并在附图中示出的结构,本申请还提供了具有SMA线的摄像模组实施方式。
根据一个实施方式,摄像模组可包括:具有外框架的镜头模块、设置在镜头模块的下方并用于支撑镜头模块的底座、以及呈四边形围绕镜头模块的外框架设置的SMA线,其中,四边形的四条边分别对应于外框架在四个方向上的侧面,在外框架的每个侧面上,SMA线均包括第一SMA线和第二SMA线,其中,第一SMA线和第二SMA线被设置为彼此交叉但不接触。在此实施方式中,对于上述实施方式中的固定装置和支承部(包括绕线部和活动端固定部)的结构和位置可以不做具体限制,只要设置在镜头模块的外框架侧面的SMA呈四边形围绕镜头模块的外框架设置、并且在四边形的每条边的两根SMA线能够彼此交叉但不接触从而能够在不同的驱动下带动镜头向需要的方向移动,即可实现本申请的目的。
在一个实施方式中,上述的四边形是矩形。
在一个实施方式中,在外框架的每个侧面上,第一SMA线和第二SMA线均具有固定端和活动端,固定端设置在与外框架的每个侧面的一端对应的位置处,活动端支承在外框架的每个侧面的另一端,固定端相对于底座是固定的,活动端相对于外框架是固定的,在SMA线发生形变时,活动端带动镜头模块相对于底座进行移动。上文已经详细介绍了在镜头模块的外框架侧面的SMA线在不同的驱动模式下分别进行何种收缩和移动以实现光学防抖和自动对焦的具体情形,因此在此不再重复描述。上文结合附图描述的各个实施方式中的全部技术特征在不具有冲突的情况下均适用于具有SMA线的摄像模组实施方式。
例如,在一个实施方式中,第一SMA线和第二SMA线中的至少一个是折叠的,从而具有两个固定端和一个活动端,第一SMA线和第 二SMA线中的至少一个的两个固定端相对于底座设置在固定且相邻的位置。由此,折叠的两端SMA线形成为彼此大致平行。
在一个实施方式中,第一SMA线和第二SMA线中的至少一个的活动端被支承在镜头模块的外框架上。如上文所述,活动端可以是通过缠绕或固定的方式支承在镜头模块的外框架上,并且活动端在外框架上的支承方式并不限于缠绕和固定。
在一个实施方式中,第一SMA线和第二SMA线中的至少一个被折叠为两个SMA线段,两个SMA线段彼此平行并具有相同的长度。在不同的实施方式中,两个SMA线段也可以具有不同的长度。
在一个实施方式中,外框架的相邻侧面上的SMA线是对称设置的,从而在为了实现光学防抖而被施加大致相同的电流的情况下,二者对外框架上的支承处或支承部施加的力在x方向和y方向的分量大致抵消。在一个实施方式中,在外框架的每个侧面上,第一SMA线和第二SMA线被设置为彼此对称并具有相同的长度,从而在对焦过程中被施加大致相同的电流的情况下,对外框架上的支承处或支承部施加的力也大致相同,由此二者施加的力的轴向分量大致抵消。在一个实施方式中,在外框架的每个侧面上,第一SMA线和第二SMA线被设置为具有彼此对称的至少一部分。
在一个实施方式中,在外框架的每个侧面上,第一SMA线和第二SMA线的活动端与每个侧面相距不同的距离。在一个实施方式中,在外框架的每个侧面上,第一SMA线和第二SMA线的固定端与每个侧面相距不同的距离。由此,确保每个侧面的两根SMA线在因收缩而移动的过程中,彼此之间不会发生摩擦而对镜头模块的位置造成不利的影响。
在一个实施方式中,镜头模块在外框架的每个侧面上均具有第一支承部和第二支承部,第一支承部和第二支承部分别支承第一SMA线和第二SMA线。
在一个实施方式中,第一支承部和第二支承部中的至少第一支承部是绕线部,第一SMA线缠绕在绕线部上。
在一个实施方式中,绕线部垂直于透镜模块的光轴设置,并具有 平行于光轴的绕线结构,从而第一SMA线平行于光轴缠绕在绕线结构上。在一个实施方式中,绕线部平行于透镜模块的光轴设置,并具有垂直于光轴的绕线结构,从而第一SMA线垂直于光轴缠绕在绕线结构上。在一个实施方式中,绕线部具有T形或工形的绕线结构,第一SMA线缠绕在绕线部的T形或工形的绕线结构上。
在一个实施方式中,第一支承部和第二支承部中的至少第一支承部是活动端固定部,第一SMA线固定在活动端固定部上。在一个实施方式中,第一SMA线包括两段分离的SMA线段,活动端固定部的内部还包括导电元件,导电元件设置在两段分离的SMA线段之间。由于普通导电元件的电阻率大于SMA的电阻率,因此SMA线能够分得更多的电压,提高电能利用率。在不同的实施方式中,第一SMA线也可包括整根SMA线,而不是分离的两段SMA线段;在这种情况下,活动端固定部中无需使用额外的导电元件。
应当理解,在不具有冲突的情况下,在以上任一个实施方式中描述的技术特征也全部或部分地可用于其他实施方式中。例如,在图1A所述的实施方式中,可将一个绕线部替换为活动端固定部,而另一个绕线部保持使用图1A所示的绕线部或其他结构的绕线部。
以上描述仅为本申请的较佳实施方式以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的保护范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离本申请构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
Claims (28)
- 一种光学组件,其特征在于,包括:镜头模块,具有外框架,所述外框架包括按照角度范围划分的四个侧面,所述镜头模块在所述外框架的每个侧面上均包括第一支承部和第二支承部,每个侧面的所述第一支承部和所述第二支承部均位于所述外框架的一组对角区域;以及固定装置,设置在所述镜头模块的所述外框架的另一组对角区域,所述固定装置在分别与所述外框架的每个侧面对应的固定面上均具有与所述第一支承部对应的第一电源固定部和第一地线固定部、以及与所述第二支承部对应的第二电源固定部和第二地线固定部。
- 如权利要求1所述的光学组件,其特征在于,还包括:底座,设置在所述镜头模块的下方,用于支撑所述镜头模块,并固定所述固定装置。
- 如权利要求1所述的光学组件,其特征在于,所述第一支承部和所述第二支承部一体地形成在所述镜头模块的所述外框架上。
- 如权利要求1所述的光学组件,其特征在于,所述第一支承部、所述第二支承部、所述第一电源固定部、所述第一地线固定部、所述第二电源固定部、所述第二地线固定部的位置被设置为使得:所述第一支承部上的第一支承位置与所述第一电源固定部上的固定位置之间和所述第一支承部上的第二支承位置与所述第一地线固定部上的固定位置之间形成包括第一连线和第二连线的第一组连线,所述第二支承部上的第三支承位置与所述第二电源固定部上的固定位置之间和所述第二支承部上的第四支承位置与所述第二地线固定部上的固定位置之间形成包括第三连线和第四连线的第二组连线,所述第一组连线和所述第二组连线交叉但彼此不接触。
- 如权利要求4所述的光学组件,其特征在于,所述第一支承部、所述第二支承部、所述第一电源固定部、所述第一地线固定部、所述第二电源固定部、所述第二地线固定部的位置被设置为使得:所述第一连线和所述第二连线相互平行,所述第三连线和所述第四连线相互平行。
- 如权利要求4所述的光学组件,其特征在于,在所述外框架的每个侧面上,所述第一支承位置和所述第二支承位置与所述外框架的对应侧面相隔的距离不同于所述第三支承位置和所述第四支承位置与所述外框架的对应侧面相隔的距离。
- 如权利要求1所述的光学组件,其特征在于,在所述固定装置的每个固定面上,所述第一电源固定部上的固定位置和所述第一地线固定部上的固定位置与所述固定面相隔的距离不同于所述第二电源固定部上的固定位置和所述第二地线固定部上的固定位置与所述固定面相隔的距离。
- 如权利要求1所述的光学组件,其特征在于,所述第一支承部和所述第二支承部中的至少所述第一支承部是绕线部,所述绕线部的绕线结构设置在所述第一支承位置和所述第二支承位置对应的位置处。
- 如权利要求8所述的光学组件,其特征在于,所述绕线部具有平行于所述光轴的绕线结构。
- 如权利要求8所述的光学组件,其特征在于,所述绕线部具有垂直于所述光轴的绕线结构。
- 如权利要求8所述的光学组件,其特征在于,所述第一支承部和所述第二支承部都是绕线部,并由平行于所述光轴的同一轴部件上两个部分形成,所述轴部件设置在从所述外框架的对应侧面向外延 伸的支撑件中。
- 如权利要求8所述的光学组件,其特征在于,所述绕线部具有T形或工形的绕线结构。
- 如权利要求1所述的光学组件,其特征在于,所述第一支承部和所述第二支承部中的至少所述第一支承部是活动端固定部。
- 如权利要求13所述的光学组件,其特征在于,所述活动端固定部包括第一活动端固定位置和第二活动端固定位置,所述第一活动端固定位置和所述第二活动端固定位置分别对应于所述第一支承位置和所述第二支承位置。
- 如权利要求14所述的光学组件,其特征在于,所述活动端固定部的内部还包括导电元件,所述导电元件设置在所述第一活动端固定位置和所述第二活动端固定位置之间。
- 如权利要求1所述的光学组件,其特征在于,所述固定装置包括:第一电源固定端和第一地线固定端,所述第一电源固定部和所述第一地线固定部分别设置在所述第一电源固定端和所述第一地线固定端上;和/或第二电源固定端和第二地线固定端,所述第二电源固定部和所述第二地线固定部分别设置在所述第二电源固定端和所述第二地线固定端上。
- 如权利要求16所述的光学组件,其特征在于,所述第一电源固定端和所述第二电源固定端是不同的电源固定端。
- 如权利要求17所述的光学组件,其特征在于,所述第一地线 固定端和所述第二地线固定端是同一地线固定端。
- 如权利要求17所述的光学组件,其特征在于,所述第一地线固定端和所述第二地线固定端是不同的地线固定端。
- 如权利要求18所述的光学组件,其特征在于,所述同一地线固定端位于所述第一电源固定端和所述第二电源固定端之间。
- 如权利要求1所述的光学组件,其特征在于,所述固定装置包括:第一固定件,所述第一电源固定部和所述第一地线固定部彼此电绝缘地固定在所述第一固定件中,和/或第二固定件,所述第二电源固定部和所述第二地线固定部彼此电绝缘地固定在所述第二固定件中。
- 如权利要求1所述的光学组件,其特征在于,对应于所述外框架的每个侧面的第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部和第二地线固定部与对应于相邻侧面的第一支承部、第二支承部、第一电源固定部、第一地线固定部、第二电源固定部和第二地线固定部对称设置。
- 如权利要求1所述的光学组件,其特征在于,所述外框架的每个侧面上的所述第一支承部与所述固定装置的对应固定面上的所述第一电源固定部和第一地线固定部之间相隔的距离与所述外框架的每个侧面上的所述第二支承部与所述固定装置的对应固定面上的所述第二电源固定部和第二地线固定部之间相隔的距离相同。
- 如权利要求1所述的光学组件,其特征在于,所述外框架的每个侧面上的所述第一支承部与所述固定装置的对应固定面上的所述第一电源固定部和第一地线固定部之间相隔的距离与所述外框架的每 个侧面上的所述第二支承部与所述固定装置的对应固定面上的所述第二电源固定部和第二地线固定部之间相隔的距离不同。
- 一种摄像模组,其特征在于,包括权利要求1至24中任一项所述的光学组件。
- 如权利要求25所述的摄像模组,其特征在于,还包括:SMA线,围绕所述摄像模组的所述外框架设置,用于驱动所述摄像模组在多个方向上移动。
- 如权利要求26所述的摄像模组,其特征在于,在所述外框架的每个侧面,所述SMA线均包括第一SMA线和第二SMA线,所述第一SMA线和所述第二SMA线的活动端分别由所述第一支承部和所述第二支承部支承,所述第一SMA线的两个固定端分别固定于所述第一电源固定部和所述第一地线固定部,所述第二SMA线的两个固定端分别固定于所述第二电源固定部和所述第二地线固定部。
- 一种智能设备,其特征在于,包括权利要求25至28中任一项所述的摄像模组。
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WO (1) | WO2019109734A1 (zh) |
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CN114258504A (zh) * | 2019-07-01 | 2022-03-29 | 华为技术有限公司 | 用于可调透镜的具有基于形状记忆合金的执行器的光学装置 |
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CN111868622B (zh) * | 2017-12-23 | 2021-12-14 | 华为技术有限公司 | 镜头位置调整设备、相机模块、信息设备和相机驱动方法 |
WO2019142005A1 (en) * | 2018-01-22 | 2019-07-25 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
CN209514186U (zh) * | 2018-01-25 | 2019-10-18 | 台湾东电化股份有限公司 | 光学元件驱动机构 |
TWI756009B (zh) * | 2021-01-05 | 2022-02-21 | 大陸商廣州立景創新科技有限公司 | 鏡頭定位裝置 |
WO2023223944A1 (ja) * | 2022-05-16 | 2023-11-23 | アルプスアルパイン株式会社 | モジュール駆動装置及び光学装置 |
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EP3722859A4 (en) | 2021-01-13 |
US20200310081A1 (en) | 2020-10-01 |
JP7007479B2 (ja) | 2022-01-24 |
US11531183B2 (en) | 2022-12-20 |
EP3722859A1 (en) | 2020-10-14 |
KR102393995B1 (ko) | 2022-05-03 |
JP2021504745A (ja) | 2021-02-15 |
KR20200097252A (ko) | 2020-08-18 |
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