Lens driving device, camera module, and optical apparatus

Abstract

The present invention relates to a lens driving device including a first housing, a second housing disposed in the first housing, a coil holder disposed in the second housing, an iris disposed on the coil holder, a plate disposed on the first housing, first to fourth coils disposed on the plate, a first magnet disposed on the second housing and facing the first coil, a second magnet disposed on the coil holder and facing the second coil, a third magnet disposed on the coil holder and facing the third coil, and a fourth magnet disposed on the iris and facing the fourth coil, wherein the first to fourth coils are spaced apart from each other, the first and third coils are disposed to face each other, and the second and fourth coils are disposed to face each other, and wherein the fourth coil has a shape different from a shape of the second coil.

Description

[0001] This application is a divisional application of Chinese patent application No. 201880051607.9, filed on February 7, 2020, entitled "Lens Driving Device, Camera Module, and Optical Equipment". The international filing date of the parent application is August 7, 2018, and the international application number is PCT / KR2018 / 008966, with a priority date of August 7, 2017. Technical Field

[0002] This embodiment relates to a lens driving device, a camera module, and optical equipment. Background Technology

[0003] This section provides background information related to the present invention, which is not necessarily prior art.

[0004] With the widespread use of various mobile terminals and the commercialization of wireless internet services, consumer demand for mobile terminals has become more diversified, allowing for the installation of various types of peripheral devices on mobile terminals.

[0005] Camera modules are one of the representative items that capture objects in pictures or videos. Recently, camera modules with the following functions have emerged: autofocus, which automatically adjusts the focus in response to the distance from the object; and OIS (Optical Image Sensor) function, which moves the lens module in a direction perpendicular to the optical axis or tilts the lens module to counteract vibrations (movements) caused by external forces on the image sensor.

[0006] Meanwhile, the aperture is a device that adjusts the amount of light passing through the lens module by adjusting the size of the opening.

[0007] The disadvantage of conventional camera modules is that the structure of the camera module is complex because the autofocus, OIS (optical image stabilization) and aperture drive functions are performed by separate drive components. Summary of the Invention

[0008] Technical topics

[0009] This embodiment provides a compact lens drive device, camera module, and optical device configured to perform autofocus, OIS, and aperture drive functions using a single drive component.

[0010] Technical solution

[0011] A lens driving device according to an exemplary embodiment of the present invention includes: a first housing; a second housing disposed inside the first housing; a coil holder disposed inside the second housing; an aperture disposed on or at the coil holder; a first coil, a second coil, a third coil, and a fourth coil disposed on the first housing; a first magnet disposed on the second housing and positioned opposite the first coil; a second magnet disposed on the coil holder and positioned opposite the second coil; a third magnet disposed on the coil holder and positioned opposite the third coil; and a fourth magnet disposed on the aperture and positioned opposite the fourth coil, wherein the first coil, the second coil, the third coil, and the fourth coil are spaced apart from each other; the first coil and the third coil are positioned opposite each other, wherein the first magnet and the third magnet are located between the first coil and the third coil; and the second coil and the fourth coil are positioned opposite each other, wherein the second magnet and the fourth magnet are located between the second coil and the fourth coil.

[0012] The first housing may include: a first corner, a second corner, a third corner, and a fourth corner spaced apart from each other; a first connecting portion connecting the first corner and the second corner; a second connecting portion connecting the second corner and the third corner; a third connecting portion connecting the third corner and the fourth corner; and a fourth connecting portion connecting the fourth corner and the first corner, wherein a first coil may be disposed on the first connecting portion, a second coil may be disposed on the second connecting portion, a third coil may be disposed on the third connecting portion, and a fourth coil may be disposed on the fourth connecting portion.

[0013] The lens driving device may further include a plate in which a first coil, a second coil, a third coil, and a fourth coil are disposed internally; wherein the plate may be disposed on the first connecting part, the second connecting part, the third connecting part, and the fourth connecting part.

[0014] The plate may include: a first plate disposed on a first connecting portion and having a first coil disposed therein; a second plate disposed on a second connecting portion and having a second coil disposed therein; a third plate disposed on a third connecting portion and having a third coil disposed therein; and a fourth plate disposed on a fourth connecting portion and having a fourth coil disposed therein.

[0015] The lens driving device may also include one or more magnetic sensors disposed inside the plate and spaced apart from the first coil, second coil, third coil and fourth coil, to detect the magnetic force of at least one of the first magnet, second magnet, third magnet and fourth magnet.

[0016] The second housing can move along the optical axis via the electromagnetic interaction between the first magnet and the first coil. The coil frame can move along a first direction perpendicular to the optical axis, or tilt along the first direction perpendicular to the optical axis, via the electromagnetic interaction between the second magnet and the second coil. The coil frame can move along a second direction perpendicular to both the optical axis and the first direction, or tilt along the second direction perpendicular to both the optical axis and the first direction, via the electromagnetic interaction between the third magnet and the third coil. The aperture can include: a stator, which includes a first guide and a second guide; a mover, which is disposed on the stator and has a fourth magnet; a connecting rod, which is rotatably connected to the mover on one side; and a rotor, which is rotatably connected to the other side of the connecting rod and rotatably connected to the stator at its center. The rotor comprises: a first blade disposed on one side of the rotor; and a second blade disposed on the other side of the rotor. The first blade may include: a first connecting rod rotatably connected to one side of the rotor and movable along a first guide; and a first blocking plate disposed on the other side of the first connecting rod and having a first groove. The second blade may include: a second connecting rod rotatably connected to one side of the rotor and movable along a second guide; and a second blocking plate disposed on the other side of the second connecting rod and having a second groove. At least a portion of the second groove and the first groove may overlap in the optical axis direction, and the area of ​​the hole formed by the first groove and the second groove may be adjusted by the electromagnetic interaction between the fourth magnet and the fourth coil.

[0017] The lens drive device may further include: one or more first ball bearings between the first housing and the second housing; a movable member between the second housing and the coil frame; one or more second ball bearings between the movable member and the coil frame; and one or more third ball bearings between the second housing and the movable member.

[0018] The lens driving device may also include a cover, which internally houses a first housing, a second housing, a coil holder, an aperture, a first coil, a second coil, a third coil, a fourth coil, a first magnet, a second magnet, a third magnet, and a fourth magnet.

[0019] A camera module according to an exemplary embodiment of the present invention may include: a lens driving device; a lens module disposed on the lens driving device and including a plurality of lenses; a main board disposed below the lens driving device; and an image sensor mounted on the main board and disposed on the optical axis of the lens module, wherein the lens driving device may include: a first housing; a second housing disposed inside the first housing; a coil holder disposed inside the second housing; an aperture disposed on or at the coil holder; a first coil, a second coil, a third coil, and a fourth coil disposed on the first housing; and a first magnet disposed on the second housing. The first, second, third, and fourth coils are positioned opposite to the first coil; the second, third, and fourth coils are positioned on the coil frame and opposite to the second coil; the third, third, and fourth coils are positioned opposite to each other; the first and third coils are positioned opposite to each other, with the first and third magnets positioned between the first and third coils; and the second and fourth coils are positioned opposite to each other, with the second and fourth magnets positioned between the second and fourth coils.

[0020] An optical device according to an exemplary embodiment of the present invention may include: a frame; a display disposed on one surface of the frame; and a camera module disposed inside the frame for electrical connection to the display. The camera module may include: a lens module disposed on a lens driving device to include a plurality of lenses; a main board disposed below the lens driving device; and an image sensor mounted on the main board and disposed on the optical axis of the lens module. The lens driving device may include: a first housing; a second housing disposed inside the first housing; a coil holder disposed inside the second housing; an aperture disposed on or at the coil holder; and a first coil and a second coil disposed on the first housing. The device comprises a first coil, a second coil, and a fourth coil; a first magnet disposed on a second housing and positioned opposite the first coil; a second magnet disposed on a coil holder and positioned opposite the second coil; a third magnet disposed on a coil holder and positioned opposite the third coil; and a fourth magnet disposed on an aperture and positioned opposite the fourth coil, wherein the first, second, third, and fourth coils are spaced apart from each other; the first and third coils are positioned opposite each other, wherein the first and third magnets are located between the first and third coils; and the second and fourth coils are positioned opposite each other, wherein the second and fourth magnets are located between the second and fourth coils.

[0021] A lens driving device according to an exemplary embodiment of the present invention may include: a first housing; a second housing disposed in the first housing; a coil holder disposed in the second housing; an aperture disposed on the coil holder; a plate disposed on the first housing; a first coil to a fourth coil disposed on the plate; a first magnet disposed on the second housing and facing the first coil; a second magnet disposed on the coil holder and facing the second coil; a third magnet disposed on the coil holder and facing the third coil; and a fourth magnet disposed on the aperture and facing the fourth coil, wherein the first coil to the fourth coil are spaced apart from each other, the first coil and the third coil are arranged opposite each other, and the second coil and the fourth coil are arranged opposite each other, and wherein the fourth coil has a shape different from that of the second coil.

[0022] A lens driving device according to an exemplary embodiment of the present invention may include: a first housing; a second housing disposed in the first housing; a coil holder disposed in the second housing; an aperture disposed on the coil holder; a plate disposed on the first housing; a first coil to a fourth coil disposed on the plate; a first magnet disposed on the second housing and facing the first coil; a second magnet disposed on the coil holder and facing the second coil; a third magnet disposed on the coil holder and facing the third coil; and a fourth magnet disposed on the aperture and facing the fourth coil, wherein the first coil to the fourth coil are spaced apart from each other, the first coil and the third coil are arranged opposite each other, and the second coil and the fourth coil are arranged opposite each other, and wherein, when viewed from the inside, the horizontal width of the fourth coil is shorter than the horizontal width of the second coil.

[0023] A camera module according to an exemplary embodiment of the present invention may include: a printed circuit board (PCB); an image sensor disposed on the printed circuit board; a lens driving device disposed above the printed circuit board according to the above description; and a lens coupled to the coil holder of the lens driving device.

[0024] An optical device according to an exemplary embodiment of the present invention may include: a frame; a display disposed on one surface of the frame; and a camera module disposed on the frame and electrically connected to the display, as described above.

[0025] A lens driving device according to an exemplary embodiment of the present invention may include: a first housing; a cover disposed on the first housing; a second housing disposed in the first housing; a coil holder disposed in the second housing; and an aperture disposed on the coil holder.

[0026] A lens driving device according to an exemplary embodiment of the present invention may include: a first housing; a cover disposed on the first housing, the cover including an upper plate and a plurality of side plates; a second housing disposed in the first housing; a coil holder disposed in the second housing; an aperture disposed on the coil holder; a plate disposed on the first housing; a first coil to a fourth coil disposed on the plate; a first magnet disposed on the second housing and facing the first coil; a second magnet disposed on the coil holder and facing the second coil; a third magnet disposed on the coil holder and facing the third coil; and a fourth magnet disposed on the aperture and facing the fourth coil, wherein the second housing is configured to move along an optical axis direction via the first magnet and the first coil, and wherein the coil holder and the aperture are configured to move together with the second housing when the second housing moves along the optical axis direction.

[0027] Beneficial effects

[0028] According to an exemplary embodiment, the lens driving device can perform all autofocus, OIS, and aperture driving functions in response to electromagnetic interactions between a coil disposed on a first housing and magnets disposed on a second housing, a coil holder, and an aperture, respectively, to achieve a compact structure. Furthermore, embodiments of the present invention provide a camera module including a lens driving device and an optical device including the camera module. Attached Figure Description

[0029] Figure 1 This is a conceptual cross-sectional view illustrating a camera module according to an exemplary embodiment of the present invention.

[0030] Figure 2 This is a conceptual exploded perspective view illustrating a camera module according to an exemplary embodiment of the present invention.

[0031] Figure 3 (a) is a perspective view conceptually illustrating a first housing according to an exemplary embodiment of the present invention. Figure 3 (b) The above is a plan view of the plate according to an exemplary embodiment of the present invention, viewed from the inside, and in Figure 3 (b) The following is a plan view of the plate according to an exemplary embodiment of the present invention, viewed from the outside.

[0032] Figure 4 This is a conceptual plan view illustrating a first housing, a second housing, a coil frame, an aperture, a coil, and a magnet according to an exemplary embodiment of the present invention.

[0033] Figure 5This is a conceptual plan view illustrating the aperture according to an exemplary embodiment of the present invention. Detailed Implementation

[0034] Some exemplary embodiments of the invention will be described in detail with reference to the accompanying drawings. When describing the reference numerals for each element, the same reference numerals will be assigned to the same element, even if they are indicated differently in other drawings, where possible. Furthermore, well-known features or functions may be omitted or simplified to avoid obscuring the described embodiments.

[0035] In describing elements in exemplary embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms may be used only to distinguish one element from another, and the nature, order, or sequence is not limited by these terms. When an element is referred to as “accessed,” “coupled to,” or “connected to” another element, it should be understood that the element may be directly accessed, connected to, or coupled to other elements, or there may be intermediate elements between the element and other elements.

[0036] The term "optical axis" as used below can be defined as the optical axis of the lens module coupled to the lens drive. The "optical axis direction" can be parallel to the z-axis. The term "first direction" as used below can be defined as perpendicular to the optical axis. The "first direction" can be parallel to the x-axis. The term "second direction" as used below can be defined as perpendicular to both the optical axis direction and the first direction. The "second direction" can be defined as parallel to the y-axis.

[0037] However, it should be noted that the "optical axis", "first direction" and "second direction" are not limited to being perpendicular to each other. For example, the "optical axis" and "first direction" can be set at an angle other than 90°, and the "second direction" can also be set at an angle other than 90° relative to the "optical axis" and "first direction".

[0038] The term "autofocus function" as used below can be defined as follows: adjusting the distance to the image sensor by moving the lens module along the optical axis according to the distance to the object to match the focus of the object, so as to allow a sharp image of the object to be obtained from the image sensor. Meanwhile, "autofocus function" can be used interchangeably with "AF (autofocus) function".

[0039] The term "shake correction function" as used below can be defined as the function of moving the lens module or tilting the lens module in a direction perpendicular to the optical axis (a first direction or a second direction) to counteract vibrations (movements) caused by external forces on the image sensor. Furthermore, the "shake correction function" can be used interchangeably with the "OIS (Optical Image Stabilization)" function.

[0040] The configuration of an "optical device" according to an exemplary embodiment of the present invention will be described below. The optical device may be a handheld telephone, mobile phone, smartphone, portable smart device, digital camera, notebook computer (laptop computer), digital broadcast terminal, PDA (personal digital assistant), PMP (portable multimedia player), and navigation device. However, the invention is not limited thereto, and any device capable of capturing images or photographs can be an optical device.

[0041] An "optical device" according to an exemplary embodiment of the present invention may include a frame as an external component, a display panel disposed on one surface of the frame for displaying information, and a camera module disposed inside the frame. The camera module can capture images or photographs and can be electrically connected to the display panel. Images captured by the camera module can be reproduced by the display panel.

[0042] The configuration of a "camera module" according to an exemplary embodiment of the present invention will now be described with reference to the accompanying drawings. Figure 1 This is a conceptual cross-sectional view illustrating a camera module according to an exemplary embodiment of the present invention. Figure 2 This is a conceptual exploded perspective view illustrating a camera module according to an exemplary embodiment of the present invention. Figure 3 (a) is a perspective view conceptually illustrating a first housing according to an exemplary embodiment of the present invention. Figure 3 (b) The above is a plan view of the plate according to an exemplary embodiment of the present invention, viewed from the inside, and in Figure 3 (b) The following is a plan view of the plate according to an exemplary embodiment of the present invention, viewed from the outside. Figure 4 This is a conceptual plan view illustrating a first housing, a second housing, a coil frame, an aperture, a coil, and a magnet according to an exemplary embodiment of the present invention. Figure 5 This is a conceptual plan view illustrating the aperture according to an exemplary embodiment of the present invention.

[0043] The camera module (1000) may include a cover (100), a first housing (200), a coil (210), a plate (220), a magnetic sensor (230), a yoke (240), a second housing (300), a first ball bearing (310), a coil holder (400), a lens module (410), a moving member (500), a second ball bearing (510), a third ball bearing (520), a magnet (600), an aperture (700), a base (800), a mainboard (900), an image sensor (910), an IR (infrared) cutoff filter (not shown), and a controller (not shown).

[0044] The cover (100), first housing (200), coil (210), plate (220), magnetic sensor (230), yoke (240), second housing (300), first ball bearing (310), coil frame (400), lens module (410), moving component (500), second ball bearing (510), third ball bearing (520), magnet (600), aperture (700) and base (800) may be constituent elements of the "lens drive device".

[0045] The cover (100) can be an external component of the "camera module (1000)" and the "lens driving device". The interior of the cover (100) can house a first housing (200), a coil (210), a plate (220), a magnetic sensor (230), a yoke (240), a second housing (300), a first ball bearing (310), a coil holder (400), a lens module (410), a moving component (500), a second ball bearing (510), a third ball bearing (520), a magnet (600), an aperture (700), and a base (800). A main board (900) and an image sensor (910) can be disposed beneath the cover (100).

[0046] The cover (100) may include a metallic material. The cover (100) may prevent electromagnetic waves from being introduced from the outside or from being released from the inside to the outside. Therefore, the cover (100) may be referred to as a "protective shield". However, the material of the cover (100) is not limited to this, and the material of the cover (100) may include, for example, a plastic material.

[0047] The cover (100) may be in the shape of a square plate and may include an upper plate with a hole formed in the center aligned with the optical axis and four side plates extending downward from each side of the upper plate. The cover (100) may be formed by the upper plate and the side plates of the cover (100) having holes aligned with the optical axis on the upper surface, and may have an internal space with an open lower surface. External light reflected by an object may pass through the hole in the upper plate at the cover (100).

[0048] The cover (100) may be supported by the main board (900). The lower surface of the side plate at the cover (100) may be coupled to the upper surface of the main board (900). The portion coupled between the cover (100) and the main board (900) may be coated with an adhesive. However, in a variant (not shown), the cover (100) may be supported by a base (800). In this case, the coupling relationship between the cover (100) and the main board (900) of this exemplary embodiment can be logically applied to the coupling relationship between the cover (100) and the base (800).

[0049] The first housing (200) can be disposed inside the cover (100). The interior of the first housing (200) can house a second housing (300), a first ball bearing (310), a coil holder (400), a lens module (410), a moving component (500), a second ball bearing (510), a third ball bearing (520), a magnet (600), and an aperture (700). The first housing (200) can also house a coil (210), a plate (220), a magnetic sensor (230), and a yoke (240). A base (800) and a main board (900) can be disposed below the first housing (200).

[0050] The first housing (200) may include a plastic material. The first housing (200) may be injection molded plastic. However, the material of the first housing (200) is not limited to this.

[0051] The first housing (200) may include: a first corner (C1), a second corner (C2), a third corner (C3) and a fourth corner (C4) spaced apart from each other; a first connecting portion (201) connecting the first corner (C1) and the second corner (C2); a second connecting portion (202) connecting the second corner (C2) and the third corner (C3); a third connecting portion (203) connecting the third corner (C3) and the fourth corner (C4); and a fourth connecting portion (204) connecting the fourth corner (C4) and the first corner (C1).

[0052] The first corner (C1) and the third corner (C3) can be arranged symmetrically about the optical axis. The second corner (C2) and the fourth corner (C4) can be spaced apart from the first corner (C1) and the third corner (C3) and can be arranged symmetrically about the optical axis. The first corner (C1) can be located between the first connecting portion (201) and the second connecting portion (202). The second corner (C2) can be located between the second connecting portion (202) and the third connecting portion (203). The third corner (C3) can be located between the third connecting portion (203) and the fourth connecting portion (204). The fourth corner (C4) can be located between the fourth connecting portion (204) and the first connecting portion (201).

[0053] The first connecting part (201) and the third connecting part (203) can be arranged symmetrically about the optical axis. The first connecting part (201) and the third connecting part (203) can be arranged to correspond (face each other, overlap) in the "second direction".

[0054] The second connecting portion (202) and the fourth connecting portion (204) may be located between the first connecting portion (201) and the third connecting portion (203), and may be arranged symmetrically about the optical axis. The second connecting portion (202) and the fourth connecting portion (204) may be arranged to correspond (face each other, overlap) in the "first direction".

[0055] The first connecting part (201) and the third connecting part (203) can be arranged parallel to each other. The second connecting part (202) and the fourth connecting part (204) can be arranged parallel to each other. The first connecting part (201) and the third connecting part (203) can be arranged perpendicular to the second connecting part (202) and the fourth connecting part (204).

[0056] The first connecting part (201) may be provided with a first coil (211), a first plate (221), a first magnetic sensor (231), and a first yoke (241). The second connecting part (202) may be provided with a second coil (212), a second plate (222), a second magnetic sensor (232), and a second yoke (242). The third connecting part (203) may be provided with a third coil (213), a third plate (223), a third magnetic sensor (233), and a third yoke (243). The fourth connecting part (204) may be provided with a fourth coil (214), a fourth plate (224), a fourth magnetic sensor (234), and a fourth yoke (244).

[0057] The connection of the housing (200) can be a support member for the actuator support coil (210), plate (220), magnetic sensor (230) and yoke (240).

[0058] A plurality of coils (210) may be formed. Coils (210) may be disposed on a first housing (200). Coils (210) may be disposed on a plate (220). Coils (210) may be electrically connected to the plate (220). Each of the plurality of coils (210) may be configured to correspond (face-to-face, overlap) with each of the magnets (600) in a "first direction" and a "second direction". When power is applied to a coil (210), the coil (210) may electromagnetically interact with the magnets (600). Therefore, autofocus, OIS, and aperture (700) driving functions can be realized.

[0059] The multiple coils (210) may include a first coil (211), a second coil (212), a third coil (213), and a fourth coil (214).

[0060] The first coil (211) may be a coil block wound with conductive wire or a patterned coil formed on a plate. The first coil (211) may be disposed on the first connecting portion (201) of the first housing (200). The first coil (211) may be disposed on the first plate (221). The first coil (211) may be disposed in a "second direction" corresponding to (facing, overlapping) the first magnet (610). The first coil (211) may interact electromagnetically with the first magnet (610).

[0061] The second coil (212) can be a coil block wound with conductive wire or a patterned coil formed on a plate. The second coil (212) can be disposed on the second connecting portion (202) of the first housing (200). The second coil (212) can be disposed on the second plate (222). The second coil (212) can be disposed in a "first direction" corresponding to (facing, overlapping) the second magnet (620). The second coil (212) can interact electromagnetically with the second magnet (620).

[0062] The third coil (213) may be a coil block wound with conductive wire or a patterned coil formed on a plate. The third coil (213) may be disposed on the third connecting part (203) of the first housing (200). The third coil (213) may be disposed on the third plate (223). The third coil (213) may be disposed in a "second direction" corresponding to (facing, overlapping) the third magnet (630). The third coil (213) may interact electromagnetically with the third magnet (630).

[0063] The fourth coil (214) may be a coil block wound with conductive wire or a patterned coil formed on a plate. The fourth coil (214) may be disposed on the fourth connecting portion (204) of the first housing (200). The fourth coil (214) may be disposed on the fourth plate (224). The fourth coil (214) may be disposed in a "first direction" corresponding to (facing, overlapping) the fourth magnet (640). The fourth coil (214) may interact electromagnetically with the fourth magnet (640).

[0064] The first coil (211) and the third coil (213) can face each other across the first magnet (610) and the third magnet (630). The second coil (212) and the fourth coil (214) can face each other across the second magnet (620) and the fourth magnet (640).

[0065] The first coil (211), the second coil (212), the third coil (213), and the fourth coil (214) can be similarly arranged along each side of a square. Furthermore, the first coil (211) can face the first magnet (610), the second coil (212) can face the second magnet (620), the third coil (213) can face the third magnet (630), and the fourth coil (214) can face the fourth magnet (640).

[0066] The above arrangement can be one in which each of the plurality of coils (210) advantageously interacts electromagnetically with an opposing magnet among the plurality of magnets (600), and can simultaneously be an arrangement that minimizes electromagnetic interference between adjacent magnets (600) and adjacent coils (210). Therefore, the camera module (1000) according to the exemplary embodiment can perform precise autofocus, OIS, and aperture (700) actuation.

[0067] A plate (220) may be disposed on a first housing (200). The plate (220) may be provided with a coil (210), a magnetic sensor (230), and a yoke (240). The plate (220) may be electrically connected to the coil (210) and may supply power to the coil (210). The plate (220) may be electrically connected to the magnetic sensor (230) and may receive the detection signal from the magnetic sensor (230). The plate (220) may be electrically connected to a main board (900) to receive power and various control signals from the main board (900) and to transmit the detection signal from the magnetic sensor (230).

[0068] The plate (220) may include a first plate (221), a second plate (222), a third plate (223), a fourth plate (224), a first connecting plate (225), a second connecting plate (226), a third connecting plate (227), and a fourth connecting plate (228).

[0069] The first board (221) can be a PCB (printed circuit board). The first board (221) can be disposed on the first connecting part (201) of the housing (200). The inner surface of the first board (221) can be provided with a first coil (211) and a first magnetic sensor (231). The outer surface of the first board (221) can be provided with a first yoke (241).

[0070] The second board (222) can be a PCB (printed circuit board). The second board (222) can be disposed on the second connecting part (202) of the housing (200). The inner surface of the second board (222) can be provided with a second coil (212) and a second magnetic sensor (232). The outer surface of the second board (222) can be provided with a second yoke (242).

[0071] The third board (223) can be a PCB (printed circuit board). The third board (223) can be disposed on the third connecting part (203) of the housing (200). The inner surface of the third board (223) can be provided with a third coil (213) and a third magnetic sensor (233). The outer surface of the third board (223) can be provided with a third yoke (243).

[0072] The fourth board (224) can be a PCB (printed circuit board). The fourth board (224) can be disposed on the fourth connecting part (204) of the housing (200). The inner surface of the fourth board (224) can be provided with a fourth coil (214) and a fourth magnetic sensor (234). The outer surface of the fourth board (224) can be provided with a fourth yoke (244).

[0073] The first connecting plate (225) can be an FPCB (flexible printed circuit board). The first connecting plate (225) can electrically connect the first plate (221) and the second plate (222). In a variation (not shown), the first connecting plate (225) can be changed to various conductive lines (e.g., wiring).

[0074] The second connecting plate (226) can be an FPCB (flexible printed circuit board). The second connecting plate (226) can electrically connect the second plate (222) to the third plate (223). In a variation (not shown), the second connecting plate (226) can be changed to various conductive lines (e.g., wiring).

[0075] The third connecting plate (227) can be an FPCB (flexible printed circuit board). The third connecting plate (227) can electrically connect the third plate (223) to the fourth plate (224). In a variation (not shown), the third connecting plate (227) can be changed to various conductive lines (e.g., wiring).

[0076] The fourth connecting board (228) can be an FPCB (flexible printed circuit board). The fourth connecting board (228) can electrically connect the fourth board (224) to the first board (221). In a variation (not shown), the fourth connecting board (228) can be changed to various conductive lines (e.g., wiring).

[0077] There may be more than one magnetic sensor (230). The magnetic sensor (230) may be disposed on a plate (220). The magnetic sensor (230) may be electrically connected to the plate (220). The magnetic sensor (230) may be configured to correspond to (face or overlap) the magnet (600). The magnetic sensor (230) may be configured to correspond to (face or overlap) the magnet (600) in both a "first direction" and a "second direction".

[0078] One or more magnetic sensors (230) can detect the magnetic force of at least one of a plurality of magnets (600). The magnetic sensors (230) can detect the magnetic force of the magnets (600) and output a detection signal. The motherboard (900) can process the magnetic signals from the magnetic sensors (230) and identify the position of the magnets (600), and can perform precise autofocus, OIS, and aperture (500) actuation (feedback control) based on the above processing and identification.

[0079] One or more magnetic sensors (230) may include a first magnetic sensor (231), a second magnetic sensor (232), a third magnetic sensor (233), and a fourth magnetic sensor (234).

[0080] The first magnetic sensor (231) can be a Hall sensor. The first magnetic sensor (231) can be disposed on the first connecting portion (201) of the first housing (200). The first magnetic sensor (231) can be spaced apart from the first coil (211) and can be disposed on the first plate (221). The first magnetic sensor (231) can correspond to (face or overlap) the first magnet (610) in a "second direction". The first magnetic sensor (231) can detect the magnetic force of the first magnet (610) and can output a first detection signal in response.

[0081] The second magnetic sensor (232) can be a Hall sensor. The second magnetic sensor (232) can be disposed on the second connecting portion (202) of the first housing (200). The second magnetic sensor (232) can be spaced apart from the second coil (212) and can be disposed on the second plate (222). The second magnetic sensor (232) can correspond to (face or overlap) the second magnet (620) in a "first direction". The second magnetic sensor (232) can detect the magnetic force of the second magnet (620) and can output a second detection signal in response.

[0082] The third magnetic sensor (233) can be a Hall sensor. The third magnetic sensor (233) can be disposed on the third connecting portion (203) of the first housing (200). The third magnetic sensor (233) can be spaced apart from the third coil (213) and can be disposed on the third plate (223). The third magnetic sensor (233) can correspond to (face or overlap) the third magnet (630) in a "second direction". The third magnetic sensor (233) can detect the magnetic force of the third magnet (630) and can output a third detection signal in response.

[0083] The fourth magnetic sensor (234) can be a Hall sensor. The fourth magnetic sensor (234) can be disposed on the fourth connecting portion (204) of the first housing (200). The fourth magnetic sensor (234) can be spaced apart from the fourth coil (214) and can be disposed on the fourth plate (224). The fourth magnetic sensor (234) can correspond to (face or overlap) the fourth magnet (640) in a "first direction". The fourth magnetic sensor (234) can detect the magnetic force of the fourth magnet (640) and can output a fourth detection signal in response.

[0084] Multiple yokes (240) may be formed. The yokes (240) may be disposed on a plate (220). The yokes (240) may be configured to correspond (face-to-face, overlap) with the coil (210) and the magnet (600). Each of the multiple yokes (240) may correspond (face-to-face, overlap) with each of the multiple coils (210) and each of the multiple magnets (600) in a "first direction" and a "second direction". The yokes (240) may concentrate or gather the electromagnetic force of the coil (210) and the magnetic force of the magnet (600) to enable the smooth execution of the electromagnetic interaction between the coil (210) and the magnet.

[0085] Multiple yokes (240) may include a first yoke (241), a second yoke (242), a third yoke (243), and a fourth yoke (244).

[0086] The first yoke (241) can be a plated magnetic material. The first yoke (241) can be disposed on the first connecting part (201) of the first housing (200). The first yoke (241) can be disposed on the first plate (221). The first yoke (241) can correspond (face to, overlap) with the first coil (211) and the first magnet (610) in the "second direction". The first yoke (241) can concentrate or gather the electromagnetic force of the first coil (211) and the magnetic force of the first magnet (610).

[0087] The second yoke (242) can be a plated magnetic material. The second yoke (242) can be disposed on the second connecting part (202) of the first housing (200). The second yoke (242) can be disposed on the second plate (222). The second yoke (242) can correspond (face to, overlap with) the second coil (212) and the second magnet (620) in the "first direction". The second yoke (242) can concentrate or gather the electromagnetic force of the second coil (212) and the magnetic force of the second magnet (620).

[0088] The third yoke (243) can be a plated magnetic material. The third yoke (243) can be disposed on the third connecting part (203) of the first housing (200). The third yoke (243) can be disposed on the third plate (223). The third yoke (243) can correspond (face to, overlap with) the third coil (213) and the third magnet (630) in the "second direction". The third yoke (243) can concentrate or gather the electromagnetic force of the third coil (213) and the magnetic force of the third magnet (630).

[0089] The fourth yoke (244) can be a plated magnetic material. The fourth yoke (244) can be disposed on the fourth connecting part (204) of the first housing (200). The fourth yoke (244) can be disposed on the fourth plate (224). The fourth yoke (244) can correspond (face to, overlap with) the fourth coil (214) and the fourth magnet (640) in the "first direction". The fourth yoke (244) can concentrate or gather the electromagnetic force of the fourth coil (214) and the magnetic force of the fourth magnet (640).

[0090] The second housing (300) can be disposed inside the first housing (200). The second housing (300) can be provided with a coil frame (400), a lens module (410), a moving component (500), a second ball bearing (510), a third ball bearing (520), a magnet (600), and an aperture (700).

[0091] The second housing (300) may have a base (800) and a plate (900) disposed below it.

[0092] The second housing (300) can be in the shape of a square plate and can have a lower plate and four side plates extending upward from each side of the lower plate, the lower plate having a hole aligned with the optical axis at its center. The second housing (300) can be formed by the lower plate and the side plates of the second housing (300) having holes aligned with the optical axis on their lower surfaces, and can have an open internal space on its upper surface. Light that has passed through the lens module (410) can pass through the hole in the lower plate of the second housing (300).

[0093] Multiple first ball bearings (310) may be disposed between the second housing (300) and the first housing (200). The second housing (300) may be movable along the "optical axis direction" via the first ball bearings (310). That is, the second housing (300) may be movably connected to the first housing (200) along the "optical axis direction".

[0094] The second housing (300) may be provided with a first magnet (610). The side plate of the second housing (300) that is provided in the "second direction" corresponding to the first connecting part (201) (facing the ground, overlapping each other) may be provided with the first magnet (610). When power is applied to the first coil (211) to allow the first coil (211) and the first magnet (610) to interact electromagnetically, a driving force for moving the second housing (300) along the "optical axis direction" can be generated.

[0095] When the second housing (300) moves along the optical axis, the lens module (410) can move together with the second housing (300) along the optical axis. This process enables the AF (autofocus) function.

[0096] The second housing (300) may include a plastic material. The second housing (300) may be injection molded plastic. However, the material of the second housing (300) is not limited to this.

[0097] The coil holder (400) can be disposed inside the second housing (300). A lens module (410) can be disposed inside the coil holder (400). An aperture (500) can be disposed inside or above the coil holder (400). A movable member (500), a second ball bearing (510), and a third ball bearing (520) can be disposed below the coil holder (400).

[0098] The coil holder (400) can be hollow in shape with a hole aligned with the optical axis. Light that has passed through the hole in the upper plate of the cover (100) can pass through the hole in the coil holder (400).

[0099] Multiple second ball bearings (510) may be positioned between the coil carrier (400) and the movable member (500). The coil carrier (400) may be moved in a "first direction" or tilted in a "first direction" via the second ball bearings (510). That is, the coil carrier (400) may be connected to the movable member (500) to allow movement or tilting in a "first direction".

[0100] The coil holder (400) may be provided with a second magnet (620) and a third magnet (630). The second magnet (620) may be provided on the side surface of the coil holder (400) that corresponds to (faces to ground, overlaps with ground) the second connecting portion (202) of the housing (200) in the "first direction". The third magnet (630) may be provided on the side surface of the coil holder (400) that corresponds to (faces to ground, overlaps with ground) the third connecting portion (203) of the housing (200) in the "second direction".

[0101] When power is applied to the second coil (212) to allow the second coil (212) and the second magnet (620) to interact electromagnetically, a driving force can be generated that moves the coil frame (400) in the "first direction" or tilts the coil frame (400) in the "first direction".

[0102] When power is applied to the third coil (213) to allow the third coil (213) and the third magnet (630) to interact electromagnetically, a driving force can be generated that moves the coil frame (400) in the "second direction" or tilts the coil frame (400) in the "second direction".

[0103] When the coil holder (400) moves or tilts along the "first direction", the lens module (410) can move or tilt together with the coil holder (400) along the "first direction". Through this process, OIS function (OIS(x)) based on the "first direction (x-axis)" can be realized.

[0104] When the coil holder (400) moves or tilts along the "second direction", the lens module (410) can move or tilt together with the coil holder (400) along the "second direction". Through this process, OIS function based on the "second direction (y-axis)" (OIS(y)) can be realized.

[0105] The coil holder (400) may include a plastic material. The coil holder (400) may be injection molded plastic. However, the material of the coil holder (400) is not limited to this.

[0106] The lens module (410) may be located inside the coil holder (400). The lens module (410) may include multiple lenses and lens barrels. However, one element of the lens module (410) is not limited to the lens barrel, and any retainer structure capable of supporting one or more lenses may be sufficient. Light that has passed through the lens module may illuminate the image sensor (910).

[0107] The movable component (500) can be disposed below the coil holder (400). The movable component (500) can be disposed above the lower plate of the second housing. The movable component (500) can be positioned between the second housing (300) and the coil holder (400).

[0108] The movable member (500) can be in the shape of a square plate with a hole formed in the center aligned with the optical axis. Light that has passed through the hole in the coil holder (400) can pass through the hole in the movable member (500).

[0109] The movable component (500) may include a plastic material. The movable component (500) may be injection molded plastic. However, the material of the movable component (500) is not limited to this.

[0110] Multiple second ball bearings (510) may be located between the movable member (500) and the coil holder (400). The coil holder (400) may be moved or tilted in a "first direction" via the second ball bearings (510). That is, the coil holder (400) may be movably or tiltably connected to the movable member (500) in the "first direction".

[0111] Multiple third ball bearings (520) may be located between the movable member (500) and the second housing (300). The movable member (500) may move or tilt in a "second direction" via the third ball bearings (520). That is, the movable member (500) may be movably or tiltably connected to the second housing (300) in the "second direction". The coil holder (400) may move or tilt in the "second direction" via the movable member (500).

[0112] A plurality of magnets (600) may be formed. Each of the plurality of magnets (600) may be distributed and disposed on the second housing (300), the coil frame (400), and the aperture (700). Each of the plurality of magnets (600) may be disposed in a "first direction" or in a "second direction" corresponding to each of the plurality of coils (210) (facing each other, overlapping each other).

[0113] A magnet (600) can interact electromagnetically with a coil (210) to provide driving force to a second housing (300) and a coil holder (400). The second housing (300) can move along the "optical axis" via the electromagnetic interaction between the magnet (600) and the coil (210) to perform an AF function. The coil holder (400) can move or tilt along a "first direction (x-axis)" via the electromagnetic interaction between the magnet (600) and the coil (210) to perform an OIS function based on the "first direction (x-axis)". The coil holder (400) can move or tilt along a "second direction (y-axis)" via the electromagnetic interaction between the magnet (600) and the coil (210) to perform an OIS function based on the "second direction (y-axis)" (OIS(y)).

[0114] The plurality of magnets (600) may include a first magnet (610), a second magnet (620), a third magnet (630) and a fourth magnet (600).

[0115] The first magnet (610) and the third magnet (630) can be arranged symmetrically about the optical axis. The first magnet (610) and the third magnet (630) can be arranged parallel about a first direction. The first magnet (610) and the third magnet (630) can be arranged correspondingly (facing each other, overlapping each other) on their inner surfaces in a second direction.

[0116] The second magnet (620) and the fourth magnet (640) may be spaced apart from the first magnet (610) and the third magnet (630). The second magnet (620) and the fourth magnet (640) may be arranged symmetrically about the optical axis. The second magnet (620) and the fourth magnet (640) may be arranged parallel about a second direction. The second magnet (620) and the fourth magnet (640) may be arranged correspondingly (facing each other, overlapping each other) on their respective inner surfaces in a first direction.

[0117] The first magnet (610) can be disposed in a "second direction" corresponding to the first coil (211) (facing ground, overlapping ground). The first magnet (610) can be in the shape of a plate magnet disposed on its outer surface in a "second direction" corresponding to the inner surface of the first coil (211) (facing ground, overlapping ground). The first magnet (610) can interact electromagnetically with the first coil (211) to perform AF (autofocus) function. The first magnet (610) can be formed in the side plate of the second housing (300) disposed in a "second direction" corresponding to the first connecting part (201) (facing ground, overlapping ground).

[0118] The second magnet (620) can be disposed in a "first direction" corresponding to the second coil (212) (facing ground, overlapping ground). The second magnet (620) can be in the shape of a plate magnet disposed on its outer surface in a "first direction" corresponding to the inner surface of the first coil (211) (facing ground, overlapping ground). The second magnet (620) can interact electromagnetically with the second coil (212) to perform OIS (OIS(x)) based on the "first direction (x-axis)". The second magnet (620) can be disposed on the side surface of the coil holder (400) in a "first direction" corresponding to the second connecting part (202) (facing ground, overlapping ground).

[0119] The third magnet (630) can be disposed in the "second direction" corresponding to the third coil (213) (facing ground, overlapping ground). The third magnet (630) can be a plate magnet disposed on the outer surface in the "second direction" corresponding to the inner surface of the third coil (213) (facing ground, overlapping ground). The third magnet (630) can interact electromagnetically with the third coil (213) to perform OIS (OIS(y)) based on the "second direction". The third magnet (630) can be formed on the side surface of the coil holder (400) disposed in the "second direction" corresponding to the third connecting part (203) (facing ground, overlapping ground).

[0120] The fourth magnet (640) can be disposed in a "first direction" corresponding to the fourth coil (214) (facing ground, overlapping ground). The fourth magnet (640) can be a plate magnet disposed on its outer surface in a "second direction" corresponding to the inner surface of the fourth coil (214) (facing ground, overlapping ground). The fourth magnet (640) can drive the aperture (700) by electromagnetically interacting with the fourth coil (214).

[0121] The aperture (700) can be set on or at the coil holder (400). When the aperture (700) is set at the coil holder (400) (not shown), the aperture (700) can be positioned between multiple lenses of the lens module (410). The aperture (700) can be provided with a fourth magnet (640).

[0122] The aperture (700) may include: a stator (710) including a first guide (711) and a second guide (712); a mover (720) disposed on the stator (710) and provided with a fourth magnet (640); a connecting rod (730) rotatably connected to the mover (720) on one side; a rotor (740) rotatably connected to the other side of the connecting rod (730) and rotatably connected to the stator (710) at the center; a first blade (750) disposed on one side of the rotor (740); and a second blade (760) disposed on the other side of the rotor (740).

[0123] The mover (720) can move in a “first direction” in response to the electromagnetic interaction between the fourth coil (214) and the fourth magnet (640). To facilitate the movement of the mover (720), a plurality of fourth ball bearings (not shown) may be positioned between the stator (710) and the mover (720).

[0124] The driving force can be transmitted to the rotor (740) via the connecting rod (730) through the movement of the mover (720) in the "first direction". The rotor (740) can rotate in the forward or backward direction, and the first blade (750) and the second blade (760) can move in the "second direction" through the rotation of the rotor (740).

[0125] The first blade (750) may include: a first connecting rod (751) rotatably connected to one side of the rotor (740) and movable along the first guide (711); and a first baffle plate (752) disposed on the other side of the first connecting rod (751) and having a first groove (752-1).

[0126] The second blade (760) may include: a second connecting rod (762) rotatably connected to the other side of the rotor (740) on one side and movable along the second guide (712); and a second baffle plate (762) disposed on the other side of the second connecting rod (762) and having a second groove (762-1).

[0127] At least a portion of the first groove (752-1) and the second groove (762-1) may overlap in the optical axis direction, and the first groove (752-1) and the second groove (762-1) may form a hole (770). The area of ​​the hole (770) formed by the first groove (752-1) and the second groove (762-1) can be adjusted by moving the first blade (750) and the second blade (750) along a "second direction". That is, the area of ​​the hole (770) formed by the first groove (752-1) and the second groove (762-1) can be adjusted by the electromagnetic interaction between the fourth coil (214) and the fourth magnet (640).

[0128] The aperture (700) can adjust the amount of light shining on the image sensor (910).

[0129] The base (800) can be mounted on the main board (900). The base (800) can be positioned below the first housing (200), the second housing (300), the coil holder (400), and the moving member (500). The upper surface of the base (800) can contact the lower surface of the first housing (200) and the lower surface of the lower plate of the second housing (300). That is, the base (800) can be a component that supports and fixes the first housing (200), the second housing (300), the coil holder (400), and the moving member (500).

[0130] The base (800) can be a square plate with a hole formed in the center along the optical axis. Light that has passed through the hole (770) of the aperture (700) and the lens module (410) can pass through the hole in the base (800). The light that has passed through the hole in the base (800) can illuminate the image sensor (910).

[0131] The motherboard (900) can be a PCB (printed circuit board). The motherboard (900) can be disposed below the cover (100), the first housing (200), the coil (210), the board (220), the magnetic sensor (230), the yoke (240), the second housing (300), the first ball bearing (310), the coil holder (400), the lens module (410), the moving member (500), the second ball bearing (510), the third ball bearing (520), the magnet (600), the aperture (700), and the base (800). The motherboard (900) can be provided with an image sensor (910) aligned with the optical axis. The motherboard (900) can be mounted with the image sensor (910). For example, the image sensor (910) can be disposed on the inner upper surface of the motherboard (900), and the cover (100) and the base (800) can be disposed on the outer upper surface of the motherboard (900). With this structure, light that has passed through the lens module (410), the aperture hole (770), and the hole in the base (800) can illuminate the image sensor. The motherboard (900) can supply power to the camera module (1000) (e.g., to the coil). The motherboard (900) may be equipped with a controller to control the camera module (1000).

[0132] The image sensor (910) can output an image signal as a reflection of the illuminated light. The image signal output by the image sensor can be transmitted to the display unit (display panel) of the optical device via the motherboard (910). The image sensor (910) can be a CCD (charge-coupled device), MOS (metal-oxide-semiconductor), CPD, or CID. However, the types of image sensors (910) are not limited to these.

[0133] An IR cutoff filter can block light in the infrared region to prevent it from incident on the image sensor (910). The IR cutoff filter can, for example, be positioned between the lens module (410) and the image sensor (910). The IR cutoff filter can be disposed on a separately formed retainer member (not shown) located away from the base (800). However, the IR cutoff filter can be mounted on a hole formed in the central portion of the base (800). The IR cutoff filter can, for example, be formed of a film material or a glass material. An IR cutoff filter can, for example, be formed by coating an IR-blocking coating material onto a plate-shaped optical filter, such as a cover glass or a cover glass used to protect the surface of an image pickup device.

[0134] The controller can be mounted on the motherboard (900). However, the location of the controller is not limited to this. The controller can be located externally to the camera module (1000). The controller can control the direction, intensity, and amplitude of the current supplied to each component forming the camera module (1000). The controller can control the camera module (1000) to perform AF function, OIS function, and aperture (700) drive.

[0135] Although this disclosure has been described using all the constituent elements combined in one embodiment or operating in one embodiment of exemplary embodiments forming this disclosure, this disclosure is not limited thereto. That is, all elements can be operated by allowing one or more elements to be selectively combined, provided they are within the scope of the objectives of this invention. Furthermore, terms such as “comprising,” “having,” and / or “including” as used herein mean, unless otherwise stated, that an associated element is embedded such that the mentioned element is not excluded but may be additionally included. Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant field and the context of this disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0136] The above description is merely intended to illustrate the technical concept of the present invention, and therefore, those skilled in the art should understand that various variations and modifications can be made to the above examples without departing from the scope of protection of the present invention. The exemplary embodiments disclosed in this invention are not intended to limit the technical concept of the invention, but rather to explain the invention, and therefore, the technical concept of the invention is not limited to the exemplary embodiments. The scope of protection of the present invention should be interpreted by the appended claims, and all technical concepts within the equivalent scope should be interpreted as being included within the scope of the claims of the present invention.

[0137] This technology can also be configured as follows.

[0138] (1) A lens driving device, comprising:

[0139] First shell;

[0140] A second housing disposed within the first housing;

[0141] The coil frame is disposed in the second housing;

[0142] An aperture is set on the coil frame;

[0143] A plate disposed on the first housing;

[0144] The first to fourth coils are disposed on the plate;

[0145] A first magnet is disposed on the second housing and faces the first coil;

[0146] A second magnet is disposed on the coil frame and faces the second coil;

[0147] A third magnet, which is disposed on the coil frame and faces the third coil; and

[0148] A fourth magnet is disposed on the aperture and faces the fourth coil.

[0149] The first to fourth coils are spaced apart from each other, the first and third coils are arranged opposite each other, and the second and fourth coils are arranged opposite each other.

[0150] The second housing is configured to move along the optical axis via the first magnet and the first coil.

[0151] The coil frame is configured to move along a first direction perpendicular to the optical axis via the second magnet and the second coil.

[0152] The coil frame is configured to move along a second direction perpendicular to both the optical axis and the first direction via the third magnet and the third coil.

[0153] The aperture includes a first blade and a second blade, and

[0154] The area of ​​the hole defined by the first blade and the second blade is configured to be adjusted by the fourth magnet and the fourth coil.

[0155] (2) The lens driving device according to (1), wherein the first coil and the third coil are arranged to be opposite each other based on the optical axis.

[0156] (3) The lens driving device according to (2), wherein the second coil and the fourth coil are arranged to be opposite each other based on the optical axis.

[0157] (4) The lens driving device according to (1), wherein the first coil, the first magnet, the third magnet and the third coil overlap.

[0158] (5) The lens driving device according to (4), wherein the second coil, the second magnet, the fourth magnet and the fourth coil overlap.

[0159] (6) The lens driving device according to (1), wherein the plate includes a first plate to a fourth plate and a connecting plate connecting the first plate to the fourth plate.

[0160] The first coil is disposed on the first plate.

[0161] The second coil is disposed on the second plate.

[0162] The third coil is disposed on the third plate, and

[0163] The fourth coil is disposed on the fourth plate.

[0164] (7) The lens driving device according to (4), wherein the plate includes a first plate to a fourth plate, wherein the lens driving device includes:

[0165] A first sensor is disposed on the first plate and senses the first magnet;

[0166] A second sensor is disposed on the second plate and senses the second magnet;

[0167] A third sensor, which is disposed on the third plate and senses the third magnet; and

[0168] A fourth sensor is disposed on the fourth plate and senses the fourth magnet.

[0169] (8) The lens driving device according to (1), wherein the first housing comprises:

[0170] The first, second, third, and fourth angles are spaced apart from each other;

[0171] A first connecting portion that connects the first corner and the second corner;

[0172] A second connecting portion that connects the second corner and the third corner;

[0173] The third connecting portion connecting the third corner and the fourth corner; and

[0174] The fourth connecting portion connects the fourth corner and the first corner.

[0175] The first coil is disposed on the first connecting part, the second coil is disposed on the second connecting part, the third coil is disposed on the third connecting part, and the fourth coil is disposed on the fourth connecting part.

[0176] (9) The lens driving device according to (8), wherein the first coil to the fourth coil are disposed on the inner surface of the plate.

[0177] (10) The lens driving device according to (9), wherein the plate is disposed on the first connecting part, the second connecting part, the third connecting part and the fourth connecting part.

[0178] (11) The lens driving device according to (1), wherein the aperture is configured to adjust the amount of light passing through the aperture by means of the fourth magnet and the fourth coil.

[0179] (12) The lens driving device according to (1), wherein the aperture comprises: a stator including a first guide and a second guide; a mover disposed on the stator and provided with the fourth magnet; a connecting rod rotatably connected to the mover on one side; and a rotor rotatably connected to the other side of the connecting rod and rotatably connected to the stator at its center.

[0180] The first blade is disposed on one side of the rotor, and

[0181] The second blade is located on the other side of the rotor.

[0182] (13) The lens driving device according to (12), wherein the first blade includes: a first connecting rod rotatably connected to one side of the rotor and movable along the first guide; and a first blocking plate disposed on the other side of the first connecting rod and forming a first groove.

[0183] The second blade includes: a second connecting rod rotatably connected to one side of the rotor and movable along the second guide; and a second baffle plate disposed on the other side of the second connecting rod and having a second groove formed therein.

[0184] At least a portion of the second groove overlaps with the first groove in the optical axis direction.

[0185] (14) The lens driving device according to (13), wherein the hole defined by the first blade and the second blade is a hole formed by the first groove and the second groove.

[0186] (15) The lens driving device according to (1) includes one or more first ball bearings disposed between the first housing and the second housing.

[0187] (16) The lens driving device according to (1) includes:

[0188] A movable component disposed between the second housing and the coil frame;

[0189] One or more second ball bearings disposed between the moving member and the coil frame; and

[0190] One or more third ball bearings are disposed between the second housing and the moving member.

[0191] (17) A lens driving device, comprising:

[0192] First shell;

[0193] A second housing disposed within the first housing;

[0194] The coil frame is disposed in the second housing;

[0195] An aperture is set on the coil frame;

[0196] A plate disposed on the first housing;

[0197] The first to fourth coils are disposed on the plate;

[0198] A first magnet is disposed on the second housing and faces the first coil;

[0199] A second magnet is disposed on the coil frame and faces the second coil;

[0200] A third magnet, which is disposed on the coil frame and faces the third coil; and

[0201] A fourth magnet is disposed on the aperture and faces the fourth coil.

[0202] The first to fourth coils are spaced apart from each other, the first and third coils are arranged opposite each other, and the second and fourth coils are arranged opposite each other.

[0203] The second housing is configured to move along the optical axis via the first magnet and the first coil.

[0204] The coil frame is configured to move along a first direction perpendicular to the optical axis via the second magnet and the second coil.

[0205] The coil frame is configured to move along a second direction perpendicular to both the optical axis and the first direction via the third magnet and the third coil.

[0206] The aperture includes a first blade and a second blade, the first blade including a first groove, and the second blade including a second groove.

[0207] The area of ​​the hole formed by the first slot and the second slot is configured to be adjusted by the fourth magnet and the fourth coil.

[0208] (18) The lens driving device according to (17), wherein the first coil and the third coil are arranged to be opposite each other based on the optical axis, and

[0209] The second coil and the fourth coil are configured to be opposite each other based on the optical axis.

[0210] (19) A camera module, comprising:

[0211] Printed circuit board (PCB);

[0212] An image sensor is mounted on the printed circuit board;

[0213] A lens driving device according to any one of (1) to (18) disposed above the printed circuit board; and

[0214] The lens is coupled to the coil frame of the lens drive device.

[0215] (20) An optical device, comprising:

[0216] frame;

[0217] A display mounted on one surface of the frame; and

[0218] The camera module according to (19) is mounted on the frame and electrically connected to the display.

Claims

1. A lens driving device, comprising: First shell; A coil frame disposed in the first housing; A second housing disposed between the first housing and the coil frame; The first blade and the second blade are disposed on the coil frame; A second magnet is disposed on the coil frame; The second coil facing the second magnet; as well as A fourth magnet and a fourth coil are configured to adjust the area of ​​the aperture defined by the first and second blades via electromagnetic interaction. The second coil and the fourth coil are arranged opposite each other. Wherein, the horizontal width of the fourth magnet is shorter than the horizontal width of the second magnet, and The second coil and the fourth coil have different shapes and sizes.

2. The lens driving apparatus according to claim 1, wherein The second magnet is mounted on the coil frame, and The fourth magnet is configured to move together with the coil frame.

3. The lens driving apparatus according to claim 1 or 2, wherein The vertical length of the fourth coil is greater than the vertical length of the second coil.

4. The lens driving device according to claim 3, comprising: A plate disposed on the first housing; The first and third coils are mounted on the plate; A first magnet disposed on the second housing and facing the first coil; and A third magnet disposed on the coil frame and facing the third coil. The first coil and the third coil are arranged opposite to each other, and The fourth coil has a shape that is different from that of the second coil.

5. The lens driving apparatus according to claim 3, wherein The shortest distance between the optical axis and the fourth magnet is shorter than the shortest distance between the optical axis and the second magnet.

6. The lens driving device of claim 3, further comprising a fourth sensor, the fourth sensor being disposed facing the fourth magnet and configured to sense, together with the fourth magnet, the region of the aperture defined by the first blade and the second blade.

7. The lens driving device according to claim 3, wherein, The horizontal width of the fourth coil is shorter than the vertical length of the fourth coil.

8. The lens driving apparatus according to claim 4, wherein The shape of the first coil is the same as that of the third coil.

9. The lens driving device according to claim 4, comprising: A first sensor is disposed on the plate and configured to sense the first magnet; A second sensor is disposed on the plate and configured to sense the second magnet; A third sensor is disposed on the plate and configured to sense the third magnet; as well as A fourth sensor is disposed on the plate and configured to sense the fourth magnet.

10. The lens driving apparatus according to claim 9, wherein The first sensor is positioned outside the first coil.

11. The lens driving apparatus according to claim 9, wherein The second sensor is disposed in the second coil.

12. The lens driving apparatus according to claim 4, wherein The second housing is configured to move along the optical axis via the first magnet and the first coil. The coil frame is configured to move along a first direction perpendicular to the optical axis via the second magnet and the second coil. The coil frame is configured to move along a second direction perpendicular to both the optical axis and the first direction via the third magnet and the third coil.

13. The lens driving apparatus according to claim 4, wherein The first coil, the first magnet, the third magnet, and the third coil overlap.

14. The lens driving apparatus according to claim 1, wherein The second coil, the second magnet, the fourth magnet, and the fourth coil overlap.

15. The lens driving apparatus according to claim 4, wherein The first coil to the fourth coil are disposed on the inner surface of the plate.

16. The lens driving apparatus according to claim 1, wherein The first blade and the second blade are configured to move in opposite directions when the fourth magnet moves.

17. The lens driving device according to claim 1, comprising one or more first ball bearings disposed between the first housing and the second housing.

18. The lens driving device according to claim 1, comprising: A movable component disposed between the second housing and the coil frame; One or more second ball bearings are disposed between the moving member and the coil frame; as well as One or more third ball bearings are disposed between the second housing and the moving member.

19. A lens driving device, comprising: First shell; A coil frame disposed in the first housing; A second housing disposed between the first housing and the coil frame; The first blade and the second blade are disposed on the coil frame; A plate disposed on the first housing; The first coil, second coil, third coil, and fourth coil are disposed on the plate; A first magnet is disposed on the second housing and faces the first coil; A second magnet is disposed on the coil frame and faces the second coil; A third magnet is disposed on the coil frame and faces the third coil; as well as A fourth magnet is configured to adjust the area of ​​the aperture defined by the first and second blades through electromagnetic interaction with the fourth coil. The first coil and the third coil are arranged opposite each other. The second coil and the fourth coil are arranged opposite each other. Wherein, the horizontal width of the fourth coil is shorter than the horizontal width of the second coil, and The vertical length of the fourth coil is greater than that of the second coil.

20. The lens driving apparatus according to claim 19, wherein The shortest distance between the optical axis and the fourth magnet is shorter than the shortest distance between the optical axis and the second magnet.

21. The lens driving apparatus according to claim 19, wherein The horizontal width of the fourth coil is shorter than the vertical length of the fourth coil.

22. The lens driving apparatus according to claim 19, wherein The shape of the first coil is the same as that of the third coil.

23. The lens driving device according to claim 19, comprising: A first sensor is disposed on the plate and configured to sense the first magnet; A second sensor is disposed on the plate and configured to sense the second magnet; A third sensor is disposed on the plate and configured to sense the third magnet; as well as A fourth sensor is disposed on the plate and configured to sense the fourth magnet.

24. A camera module, comprising: Printed circuit board (PCB); An image sensor is mounted on the printed circuit board; The lens driving device according to claim 1 or 19 is disposed above the printed circuit board; as well as The lens is coupled to the coil frame of the lens drive device.

25. An optical device, comprising: frame; A display mounted on one surface of the frame; as well as The camera module of claim 24 is disposed on the frame and electrically connected with the display.

Images