Lens driving device, camera device, and optical instrument

Abstract

The present embodiment relates to a lens driving device comprising: a base part; a first carrier disposed in the base portion; the second bearing part is arranged in the first bearing part; the first coil and the first magnet are used for enabling the first bearing part to move in the optical axis direction; a second coil and a second magnet for moving the second carrier in a first direction perpendicular to the optical axis direction; a third coil and a third magnet for moving the second carrier in a second direction perpendicular to the optical axis direction and the first direction; and a spherical member disposed between the first carrier and the second carrier, in which the second coil includes two coils that are individually controlled, and the spherical member is in contact with one of the first carrier and the second carrier at three or more points.

Description

Technical Field

[0001] This embodiment relates to a lens driving device, a camera device, and an optical device. Background Technology

[0002] A camera device is a device that captures images or videos of objects and is installed in optical devices such as smartphones, drones, and vehicles.

[0003] The camera device has optical image stabilization features to prevent focus fluctuations caused by user hand tremors.

[0004] However, conventional camera devices include a guide member, an OIS-x guide sphere positioned above the guide member to guide the lens in the x-axis direction, and an OIS-y guide sphere positioned below the guide member to guide the lens in the y-axis direction. The aforementioned guide member and the two-stage stacked OIS guide spheres increase the optical axis length of the lens drive mechanism and the weight of the AF moving part of the lens drive mechanism, which limits AF operation.

[0005] (Patent Document 1) KR 10-2279920 B1. Summary of the Invention

[0006] Technical issues

[0007] This embodiment provides a lens driving device that combines an OIS-x guiding ball for guiding the lens in the x-axis direction and an OIS-y guiding ball for guiding the lens in the y-axis direction, while omitting the guiding components.

[0008] In addition, to prevent crosstalk, i.e., unexpected movement during x-axis and y-axis driving, this embodiment provides a lens driving device that individually controls two OIS-x coils, two OIS-y coils, two OIS-x sensors, and two OIS-y sensors.

[0009] Furthermore, this embodiment provides a lens driving device in which one side of the OIS guide ball is open such that it contacts at three or more points, and the other side of the OIS guide ball is open such that it contacts at one or two points.

[0010] Technical solution

[0011] According to this embodiment, the lens driving device includes: a base; a first carrier disposed within the base; a second carrier disposed within the first carrier; a first coil and a first magnet configured to move the first carrier along an optical axis; a second coil and a second magnet configured to move the second carrier along a first direction perpendicular to the optical axis; a third coil and a third magnet configured to move the second carrier along a second direction perpendicular to both the optical axis and the first direction; and a spherical member disposed between the first carrier and the second carrier, wherein the second coil may include two separately controlled coils, and the spherical member may contact one of the first carrier and the second carrier at three or more points.

[0012] The spherical member can contact the other of the first and second carriers at a single point.

[0013] Four spherical members can be provided, and each of the four spherical members can contact one of the first and second carrier members at three or more points.

[0014] The spherical component can contact the first carrier component at four points.

[0015] The lens driving device may further include a second sensor configured to detect a second magnet, wherein the second sensor may include a second-first sensor and a second-second sensor, and the two coils may include a second-first coil controlled by the detection value of the second-first sensor and a second-second coil controlled by the detection value of the second-second sensor.

[0016] The lens driving device may further include a second-first sensor and a second-second sensor for detecting the second magnet, wherein the two coils may include a second-first coil and a second-second coil, the second-first sensor may be disposed within the second-first coil, and the second-second sensor may be disposed within the second-second coil.

[0017] The third coil may include two separately controlled coils.

[0018] The lens driving device may further include a third sensor configured to detect a third magnet, wherein the third sensor may include a third-first sensor and a third-second sensor, and the third coil may include a third-first coil controlled by the detection value of the third-first sensor and a third-second coil controlled by the detection value of the third-second sensor.

[0019] The spherical component can be fixed to one of the first and second carriers using an adhesive.

[0020] According to this embodiment, the lens driving device may include: a base; a first carrier disposed within the base; a second carrier disposed within the first carrier; a first coil and a first magnet configured to move the first carrier along the optical axis; a second coil and a second magnet configured to move the second carrier along a first direction perpendicular to the optical axis; and a third coil and a third magnet configured to move the second carrier along a second direction perpendicular to both the optical axis and the first direction. The second coil may include two separately controlled coils, and one of the first and second carriers may include a hemispherical protrusion that contacts a groove of the other of the first and second carriers.

[0021] The camera device according to this embodiment may include: a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0022] According to this embodiment, the optical device may include: a main body; a camera device disposed on the main body; and a display disposed on the main body and configured to output at least one of an image and a video captured by the camera device.

[0023] Beneficial effects

[0024] In this embodiment, the guiding component is omitted, and the OIS-x guiding spherical member guiding the lens in the x-axis direction and the OIS-y guiding spherical member guiding the lens in the y-axis direction are integrated into one unit, thereby minimizing the length of the lens driving device in the optical axis direction.

[0025] In addition, the weight of the AF moving part is reduced, thereby reducing the power consumption used for AF operation.

[0026] Furthermore, production costs can be reduced. The OIS stroke can be increased. Alternatively, the same stroke can be achieved with a smaller lens drive.

[0027] Furthermore, crosstalk, which is an unexpected movement that occurs during x-axis and y-axis operation, can be prevented by individually controlling the two OIS-x coils and two OIS-y coils based on the detection values ​​detected by the two OIS-x sensors and two OIS-y sensors.

[0028] In addition, because the impact is dispersed by the contact structure of the three or more points of the OIS guide ball, it can prevent the OIS guide ball from hitting the injection molded product and damaging the injection molded product. Attached Figure Description

[0029] Figure 1 This is a perspective view of the lens driving device according to this embodiment.

[0030] Figure 2 yes Figure 1 AA cross-sectional view.

[0031] Figure 3 yes Figure 1 BB cross-section diagram.

[0032] Figure 4 This is a top cross-sectional view perpendicular to the optical axis of the lens driving device according to this embodiment.

[0033] Figure 5 This is an exploded perspective view of the lens driving device according to this embodiment.

[0034] Figure 6 This is a perspective view illustrating the moving part and related components of the lens driving device according to this embodiment.

[0035] Figure 7 This is a cross-sectional view of the guide ball member of the lens driving device according to this embodiment.

[0036] Figure 8 This is a perspective view illustrating the AF moving part and related components of the lens driving device according to this embodiment.

[0037] Figure 9 From and Figure 8 A three-dimensional image viewed from different directions.

[0038] Figure 10 yes Figure 8 Top view and enlarged view of the parts.

[0039] Figure 11 This is a perspective view of the OIS moving part and related components of the lens driving device according to this embodiment.

[0040] Figure 12 It is as seen from below. Figure 11 A bottom view and a magnified view of a part.

[0041] Figure 13 This is a perspective view of the magnet, coil, sensor, and yoke of the lens driving device according to this embodiment.

[0042] Figure 14 This is a bottom view of the magnet, coil, sensor, and yoke of the lens driving device according to this embodiment.

[0043] Figure 15This is a perspective view illustrating the polarity of the magnet in the lens driving device according to this embodiment.

[0044] Figure 16 This is a perspective view of the OIS-x magnet and OIS-y magnet of the lens drive device according to a modified example.

[0045] Figure 17 This is a diagram illustrating the AF operation of the lens driving device according to this embodiment.

[0046] Figure 18 This is a diagram illustrating the OIS operation of the lens driving device according to this embodiment.

[0047] Figure 19 This is an exploded perspective view of the camera device according to this embodiment.

[0048] Figure 20 This is a perspective view of the optical device according to this embodiment.

[0049] Figure 21 This is a perspective view of the optical device based on the modified example. Detailed Implementation

[0050] The preferred embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0051] However, the technical concept of this disclosure is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical concept of this disclosure, one or more components between embodiments can be selectively combined or replaced and used.

[0052] Furthermore, unless explicitly and specifically defined and described, the terms (including technical and scientific terms) used in this embodiment may be interpreted as meanings that are generally understood by one of ordinary skill in the art to which the first embodiment pertains, and commonly used terms, such as those defined in a dictionary, may be interpreted in the context of the relevant art.

[0053] Furthermore, the terminology used in this embodiment is used to describe the implementation and is not intended to limit this disclosure.

[0054] In this specification, unless otherwise specifically stated in the phrase, the singular may also include the plural, and when the singular is described as “at least one (or one or more) of A, B, C”, it may include one or more of all combinations that can be combined by A, B, C.

[0055] Furthermore, when describing the components of the first embodiment, terms such as first, second, A, B, (A), (B), etc., may be used. These terms are intended only to distinguish the components from other components and are not intended to limit the nature, order, or sequence of the components.

[0056] In addition, when a component is described as being “connected,” “linked,” or “approaching” another component, it can include not only cases where the component is directly “connected,” “linked,” or “approaching” another component, but also cases where the component is “connected,” “linked,” or “approaching” another component through which the component is connected, linked, or “approached” another component.

[0057] Additionally, when described as being formed or positioned "above" or "below" each component, "above" and "below" include not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or positioned between the two components. Furthermore, when expressed as "above" or "below," it can include the meaning of a downward or upward direction based on a component.

[0058] The term "optical axis direction" as used below is defined as the optical axis direction of the lens and / or image sensor connected to the lens drive device (see [link to image sensor]). Figure 17 (OA in the text).

[0059] The term "vertical direction" as used below can be parallel to or the same as the optical axis. The vertical direction can correspond to the "z-axis direction." The term "horizontal direction" as used below can be perpendicular to the vertical direction. In other words, the horizontal direction can be perpendicular to the optical axis. Therefore, the horizontal direction can include both the "x-axis direction" and the "y-axis direction."

[0060] In the following text, one of the "x-axis direction" and the "y-axis direction" may be referred to as the "first direction," and the other may be referred to as the "second direction." Alternatively, in the following text, one of the "x-axis direction" and the "y-axis direction" may be referred to as the "first axis direction," and the other may be referred to as the "second axis direction."

[0061] The "Autofocus (AF) function" used below is defined as automatically focusing on an object by adjusting the distance between the lens and the image sensor according to the distance of the object along the optical axis, thereby enabling a clear video of the object to be obtained on the image sensor. Additionally, the "Closed-Loop Autofocus (CLAF) control" is defined as detecting the distance between the image sensor and the lens and providing real-time feedback control of the lens position to improve the accuracy of focus adjustment.

[0062] The "Optical Image Stabilization (OIS) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to compensate for hand tremors, thereby preventing image or video from shaking due to user hand tremors. Furthermore, the "Optical Image Stabilization Feedback (OISF) control" is defined as a function that detects the position of the lens relative to the image sensor and provides real-time feedback to control the position of the lens, thereby improving the accuracy of optical image stabilization.

[0063] In the following text, one of “AF carrier 210” and “OIS carrier 310” may be referred to as “first carrier” and the other may be referred to as “second carrier”.

[0064] In the following text, one of "AF magnet 410", "OIS-x magnet 510" and "OIS-y magnet 610" may be referred to as the "first magnet", another may be referred to as the "second magnet", and the last one may be referred to as the "third magnet". Furthermore, the distinguishing configurations of the "first magnet" may be referred to as "first-first magnet", "first-second magnet", etc., the distinguishing configurations of the "second magnet" may be referred to as "second-first magnet", "second-second magnet", etc., and the distinguishing configurations of the "third magnet" may be referred to as "third-first magnet", "third-second magnet", etc.

[0065] In the following text, one of "AF coil 420", "OIS-x coil 520" and "OIS-y coil 620" may be referred to as the "first coil", another may be referred to as the "second coil", and the last one may be referred to as the "third coil". Furthermore, the distinguishing configurations of the "first coil" may be referred to as "first-first coil", "first-second coil", etc., the distinguishing configurations of the "second coil" may be referred to as "second-first coil", "second-second coil", etc., and the distinguishing configurations of the "third coil" may be referred to as "third-first coil", "third-second coil", etc.

[0066] In the following text, one of "AF sensor 430", "OIS-x sensor 530" and "OIS-y sensor 630" may be referred to as the "first sensor", another may be referred to as the "second sensor", and the remaining one may be referred to as the "third sensor". Furthermore, the distinguishing configurations of the "first sensor" may be referred to as "first-first sensor", "first-second sensor", etc., the distinguishing configurations of the "second sensor" may be referred to as "second-first sensor", "second-second sensor", etc., and the distinguishing configurations of the "third sensor" may be referred to as "third-first sensor", "third-second sensor", etc.

[0067] In the following text, one of the "AF yoke 440", "OIS-x yoke 540" and "OIS-y yoke 640" can be referred to as the "first yoke", another can be referred to as the "second yoke", and the last one can be referred to as the "third yoke". Furthermore, the distinguishing configurations of the "first yoke" can be referred to as "first-first yoke", "first-second yoke", etc., the distinguishing configurations of the "second yoke" can be referred to as "second-first yoke", "second-second yoke", etc., and the distinguishing configurations of the "third yoke" can be referred to as "third-first yoke", "third-second yoke", etc.

[0068] In the following text, one of the “AF guiding ball 710” and the “OIS guiding ball 720” may be referred to as the “first ball” and the other may be referred to as the “second ball”. Furthermore, each of the “AF guiding ball 710” and the “OIS guiding ball 720” may be referred to as a “ball”.

[0069] In the following description, the configuration of the lens driving device according to this embodiment will be described with reference to the accompanying drawings.

[0070] Figure 1 This is a perspective view of the lens driving device according to this embodiment. Figure 2 yes Figure 1 AA cross-sectional view. Figure 3 yes Figure 1 BB cross-section diagram. Figure 4 This is a top cross-sectional view perpendicular to the optical axis of the lens driving device according to this embodiment. Figure 5 This is an exploded perspective view of the lens driving device according to this embodiment. Figure 6 This is a perspective view illustrating the fixed part and related components of the lens driving device according to this embodiment. Figure 7 This is a cross-sectional view of the guide ball member of the lens driving device according to this embodiment. Figure 8 This is a perspective view illustrating the AF moving part and related components of the lens driving device according to this embodiment. Figure 9 From and Figure 8 A three-dimensional image viewed from different directions. Figure 10 yes Figure 8 Top view and enlarged view of the parts. Figure 11 This is a perspective view of the OIS moving part and related components of the lens driving device according to this embodiment. Figure 12 It is as seen from below. Figure 11 A bottom view and a magnified view of a part. Figure 13 This is a perspective view of the magnet, coil, sensor, and yoke of the lens driving device according to this embodiment. Figure 14This is a bottom view of the magnet, coil, sensor, and yoke of the lens driving device according to this embodiment. Figure 15 This is a perspective view illustrating the polarity of the magnet in the lens driving device according to this embodiment. Figure 16 This is a perspective view of the OIS-x magnet and OIS-y magnet of the lens drive device according to a modified example.

[0071] The lens drive device 10 can be a voice coil motor (VCM). The lens drive device 10 can be a lens drive motor. The lens drive device 10 can be a lens drive actuator. The lens drive device 10 may include an AF module. The lens drive device 10 may include an OIS module.

[0072] The lens driving device 10 may include a fixed portion 100. The fixed portion 100 may be a portion that is relatively fixed when the moving portion moves. The moving portion may move relative to the fixed portion 100.

[0073] The lens driving device 10 may include a base 110. The fixing portion 100 may include the base 110. The base 110 may house the AF carrier 210. The base 110 may house the OIS carrier 310. The base 110 may be coupled to a cover member. The base 110 may be coupled to a substrate 120. The base 110 may be disposed within the substrate 120.

[0074] The base 110 may include a groove 111. The groove 111 may be an "AF guide ball receiving groove." The AF guide ball 710 may be disposed in the groove 111. The groove 111 may directly contact the AF guide ball 710. The groove 111 may be arranged along the optical axis. The groove 111 may guide the AF guide ball 710 to move along the optical axis. The groove 111 may include multiple grooves. The groove 111 may include two grooves. These two grooves may be arranged parallel to each other.

[0075] The lens driving device 10 may include a substrate 120. The fixing portion 100 may include the substrate 120. The substrate 120 may be disposed on the base 110. The substrate 120 may be disposed on the base 110. The substrate 120 may be disposed on the exterior of the base 110. The substrate 120 may be disposed on the outer surface of the base 110. As a modified example, the substrate 120 may be disposed on the cover member. The substrate 120 may be disposed on the side plate of the cover member. Coils 420, 520, and 620 may be disposed on the substrate 120. Sensors 430, 530, and 630 may be disposed on the substrate 120. The substrate 120 may be electrically connected to the coils 420, 520, and 620. The substrate 120 may be electrically connected to the sensors 430, 530, and 630. The substrate 120 may be a circuit board. The substrate 120 may be a printed circuit board. The substrate 120 may be an FPCB.

[0076] Substrate 120 may include a first substrate. AF coil 420 may be disposed on the first substrate. AF sensor 430 may be disposed on the first substrate. Substrate 120 may include a second substrate. OIS-y coil 620 may be disposed on the second substrate. OIS-y sensor 630 may be disposed on the second substrate. Substrate 120 may include a third substrate. OIS-x coil 520 may be disposed on the third substrate. OIS-x sensor 530 may be disposed on the third substrate. The first substrate and the second substrate may be disposed on opposite sides. The third substrate may be connected to the first substrate and the second substrate. The first substrate to the third substrate may be integrally formed.

[0077] The lens drive unit 10 may include a cover member (not shown). The fixing portion 100 may include the cover member. The cover member may be disposed on the base 110. The cover member may be disposed on the base 110. The cover member may be coupled to the base 110. The cover member may be fixed to the base 110. The cover member may house the AF carrier 210. The cover member may house the OIS carrier 310. The cover member may be a shielding member. The cover member may be a shielding cover.

[0078] The cover member may include a top plate. The top plate may be disposed on a movable part. The upward movement of the movable part may be limited by contact between the movable part and the top plate. The upward movement of the AF support member 210 may be limited by contact between the AF support member 210 and the top plate. The upward movement of the OIS support member 310 may be limited by contact between the OIS support member 310 and the top plate.

[0079] The cover member may include side plates. Side plates may extend from the top plate. Side plates may be disposed on the base 110. Side plates may be disposed on a stepped portion projecting from the lower end portion of the outer surface of the base 110. Side plates may include multiple side plates. Side plates may include four side plates. Side plates may include a first and a second side plate disposed opposite to each other, and a third and a fourth side plate disposed opposite to each other.

[0080] The lens driving device 10 may include a movable part. The movable part may be a movable body. The movable part may be mounted on the fixed part 100. The movable part may be located within the fixed part 100. The movable part may be mounted on the fixed part 100. The movable part may be movably mounted on the fixed part 100. The movable part may move relative to the fixed part 100 via a driving part. The movable part may move during AF operation. The movable part may move during OIS operation. A lens may be coupled to the movable part.

[0081] The lens driving device 10 may include an AF moving part 200. The moving part may include an AF moving part 200. The AF moving part 200 may be an AF moving body. The AF moving part 200 may be disposed on the fixed part 100. The AF moving part 200 may be disposed within the fixed part 100. The AF moving part 200 may be disposed on the fixed part 100. The AF moving part 200 may be disposed outside the OIS moving part 300. The AF moving part 200 may be disposed between the fixed part 100 and the OIS moving part 300. The AF moving part 200 may be movably disposed on the fixed part 100. The AF moving part 200 may be moved relative to the fixed part 100 along the optical axis direction via the AF driving part 400. The AF moving part 200 may move during AF driving.

[0082] The lens driving device 10 may include an AF carrier 210. The AF moving part 200 may include the AF carrier 210. The AF carrier 210 may be a "housing". The AF carrier 210 may be an "AF holder". The AF carrier 210 may be disposed within the base 110. The AF carrier 210 may be disposed on the base 110. The AF carrier 210 may be disposed within a cover member. The AF carrier 210 may be disposed on the exterior of the OIS carrier 310. The AF carrier 210 may be disposed between the base 110 and the OIS carrier 310. The AF carrier 210 may be configured to be movable along the optical axis.

[0083] The AF carrier 210 may include a groove 211. The groove 211 may be an "AF guide ball receiving groove." The AF guide ball 710 may be disposed in the groove 211. The groove 211 may directly contact the AF guide ball 710. The groove 211 may be arranged along the optical axis. The groove 211 can guide the AF guide ball 710 to move along the optical axis. The groove 211 may include multiple grooves. The groove 211 may include two grooves. These two grooves may be arranged parallel to each other.

[0084] The AF carrier 210 may include a groove 212. The groove 212 may be an "OIS guide ball receiving groove". The groove 212 may be formed on the lower plate of the AF carrier 210. The groove 212 may be formed on the upper surface of the AF carrier 210. The groove 212 may be concavely formed on the upper surface of the AF carrier 210. An OIS guide ball 720 may be disposed in the groove 212. The OIS guide ball 720 may contact the groove 212. The groove 212 may contact the OIS guide ball 720 at four points. As a modified example, the groove 212 may contact the OIS guide ball 720 at three points. The groove 212 may contact the OIS guide ball 720 at five or more points. The OIS guide ball 720 may rotate on the groove 212. However, the OIS guide ball 720 may not slide on the groove 212.

[0085] In the following text, "groove 211" or "groove 212" may be referred to as "the first groove" and the other may be referred to as "the second groove".

[0086] The lens drive unit 10 may include a cover 220. The AF moving part 200 may include a cover 220. The cover 220 may be connected to the AF carrier 210. The cover 220 may prevent the OIS carrier 310 from separating upwards. The OIS carrier 310 may be disposed between the AF carrier 210 and the cover 220 in the optical axis direction.

[0087] The lens driving device 10 may include an OIS moving part 300. The OIS moving part 300 may be an OIS moving body. The OIS moving part 300 may be disposed on the fixed part 100. The OIS moving part 300 may be disposed within the fixed part 100. The OIS moving part 300 may be disposed on the fixed part 100. The OIS moving part 300 may be disposed within the AF moving part 200. The OIS moving part 300 may be disposed on the AF moving part 200. The OIS moving part 300 may be movably disposed. The OIS moving part 300 may move relative to the fixed part 100 in a direction perpendicular to the optical axis via the OIS driving part. When the OIS is driven, the OIS moving part 300 may move. The OIS moving part 300 may move along the x-axis direction via the OIS-x driving part 500. The OIS moving part 300 may move along the y-axis direction via the OIS-y driving part 600.

[0088] The lens drive device 10 may include an OIS carrier 310. The OIS moving part 300 may include an OIS carrier 310. The OIS carrier 310 may be a "coil holder". The OIS carrier 310 may be an "OIS retainer". The OIS carrier 310 may be disposed on the base 110. The OIS carrier 310 may be disposed on the base 110. The OIS carrier 310 may be disposed within the AF carrier 210. The OIS carrier 310 may be disposed on the AF carrier 210. The OIS carrier 310 may be disposed within the cover member. The OIS carrier 310 may be disposed between the base 110 and the cover member.

[0089] OIS carrier 310 may include a groove 311. Groove 311 may be an "OIS guide ball receiving groove". Groove 311 may be formed on the lower surface of OIS carrier 310. Groove 311 may be concavely formed on the lower surface of OIS carrier 310. Alternatively, groove 311 may be formed by a rib projecting in a square ring shape on the lower surface of OIS carrier 310. OIS guide ball 720 may be disposed in groove 311. OIS guide ball 720 may contact groove 311. Groove 311 may contact OIS guide ball 720 at one point. Alternatively, groove 311 may contact OIS guide ball 720 at two points.

[0090] The OIS carrier 310 may include a lateral stop. The lateral stop can limit the lateral travel of the OIS carrier 310. In other words, when the OIS carrier 310 moves to its maximum value, the lateral stop of the OIS carrier 310 can contact at least one of the AF carrier 210 and the base 110. The lateral stop may be formed on the outer surface of the OIS carrier 310. The lateral stop may project outwardly from one side of the OIS carrier 310.

[0091] OIS carrier 310 may include a mounting portion. The mounting portion may be a "magnet mounting portion." Magnets 510 and 610 may be disposed within the mounting portion. The mounting portion may, for example, be formed as a recess.

[0092] The lens driving device 10 may include a driving section. The driving section can move the moving section relative to the fixed section 100. The driving section may include an AF driving section 400. The driving section may include an OIS driving section. The driving section may include an OIS-x driving section 500. The driving section may include an OIS-y driving section 600. The driving section may include a coil and a magnet.

[0093] The lens driving device 10 may include an AF driving section 400. The AF driving section 400 can move the AF moving section 200 along the optical axis. The AF driving section 400 can move the AF carrier 210 along the optical axis. The AF driving section 400 can move the AF carrier 210 along the optical axis by electromagnetic force. The AF driving section 400 may include a coil and a magnet.

[0094] The lens driving device 10 may include an AF magnet 410 and an AF coil 420 for moving the AF moving part 200 along the optical axis. The lens driving device 10 may include an AF magnet 410 and an AF coil 420 for moving the AF carrier 210 along the optical axis.

[0095] In this embodiment, the AF carrier 210 and the OIS carrier 310 can move together along the optical axis through the interaction between the AF coil 420 and the AF magnet 410.

[0096] The lens driving device 10 may include an AF magnet 410. The AF driving part 400 may include an AF magnet 410. The AF magnet 410 may be an "AF magnet". The AF magnet 410 may be a permanent magnet. The AF magnet 410 may be disposed in the AF moving part 200. The AF magnet 410 may be disposed in the AF carrier 210. The AF magnet 410 may be disposed in the cover member. The AF magnet 410 may be disposed in the base 110. The AF magnet 410 may be disposed on the base 110. The AF magnet 410 may be fixed to the AF carrier 210. The AF magnet 410 may be connected to the AF carrier 210. The AF magnet 410 may be bonded to the AF carrier 210 by adhesive.

[0097] The AF magnet 410 can interact with the AF coil 420. The AF magnet 410 can interact electromagnetically with the AF coil 420. The AF magnet 410 can be positioned corresponding to the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can be opposite to the AF coil 420. The AF magnet 410 can overlap with the AF coil 420 in a direction perpendicular to the optical axis.

[0098] The AF magnet 410 can be a bipolar magnet. For example, the upper portion of the AF magnet 410 can be a north pole, and the lower portion of the AF magnet 410 can be a south pole. As a modified example, the AF magnet 410 can be a quadrupole magnet. The AF magnet 410 can include a quadrupole magnetized magnet. The AF magnet 410 can include a first magnet portion and a second magnet portion, the first magnet portion including a north pole and a south pole, and the second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion can be arranged vertically. The first magnet portion and the second magnet portion are spaced apart from each other in the vertical direction, and a neutral portion is arranged between the first magnet portion and the second magnet portion.

[0099] The lens driving device 10 may include an AF coil 420. The AF driving portion 400 may include an AF coil 420. The AF coil 420 may interact with an AF magnet 410. The AF coil 420 may face the AF magnet 410. The AF coil 420 may be opposite to the AF magnet 410. The AF coil 420 may be positioned at a location corresponding to the AF magnet 410. The AF coil 420 may overlap with the AF magnet 410 in a direction perpendicular to the optical axis. The AF coil 420 may be disposed on a substrate 120. The AF coil 420 may be disposed on a base 110. The AF coil 420 may be disposed on a fixing portion 100. The AF coil 420 may be disposed on a cover member.

[0100] The lens driving device 10 may include an AF sensor 430. The AF driving section 400 may also include an AF sensor 430. The AF sensor 430 may be a Hall sensor. The AF sensor 430 may be disposed on the substrate 120. The AF sensor 430 may detect an AF magnet 410. The AF sensor 430 may detect the movement of the AF magnet 410. The amount or position of the movement of the AF magnet 410 detected by the AF sensor 430 may be used for feedback in autofocus operation.

[0101] The AF sensor 430 may be a driver IC. The driver IC may include a sensing section. The sensing section may include a Hall element (Hall IC). The driver IC may be electrically connected to the AF coil 420. The driver IC may supply current to the AF coil 420.

[0102] The lens driving device 10 may include an AF yoke 440. The AF driving portion 400 may include an AF yoke 440. The AF yoke 440 may be disposed on the substrate 120. The AF yoke 440 may be disposed on the outer surface of the substrate 120. The yoke 440 may be disposed on the base 110. The yoke 440 may be disposed on the side plate of the cover member. An attractive force may be applied between the AF magnet 410 and the AF yoke 440. The AF guiding ball 710 may be pressed between the base 110 and the AF support member 210 by the attractive force between the AF magnet 410 and the AF yoke 440.

[0103] The lens driving device 10 may include an OIS driving section. The OIS driving section can move the OIS moving section 300 in a direction perpendicular to the optical axis. The OIS driving section can also move the OIS carrier 310 in a direction perpendicular to the optical axis. The OIS driving section can move the OIS carrier 310 in a direction perpendicular to the optical axis using electromagnetic force.

[0104] The lens driving device 10 may include an OIS-x driving section 500. The OIS-x driving section 500 can move the OIS carrier 310 along the x-axis direction perpendicular to the optical axis. The OIS-x driving section can move the OIS carrier 310 along the x-axis direction perpendicular to the optical axis using electromagnetic force. The OIS-x driving section 500 may include a coil and a magnet.

[0105] The lens driving device 10 may include an OIS-x magnet 510 and an OIS-x coil 520 that move the OIS moving part 300 along the x-axis direction perpendicular to the optical axis. The lens driving device 10 may include an OIS-x magnet 510 and an OIS-x coil 520 that move the OIS carrier 310 along the x-axis direction perpendicular to the optical axis.

[0106] In this embodiment, the OIS-x magnet 510 and the OIS-x coil 520 can move the OIS moving part 300 along a first direction perpendicular to the optical axis. This first direction can be the x-axis direction. Through the interaction between the OIS-x coil 520 and the OIS-x magnet 510, the OIS carrier 310 can move along the x-axis direction perpendicular to the optical axis. The OIS-x magnet 510 and the OIS carrier 310 can move integrally along the x-axis direction.

[0107] The lens driving device 10 may include an OIS-x magnet 510. The OIS driving section may include an OIS-x magnet 510. The OIS-x magnet 510 may be an "OIS-x magnet". The OIS-x magnet 510 may be a permanent magnet. The OIS-x magnet 510 may be disposed on the OIS moving section 300. The OIS-x magnet 510 may be spaced apart from the AF magnet 410. The OIS-x magnet 510 may be disposed on the OIS carrier 310. The OIS-x magnet 510 may be disposed on the outer surface of the OIS carrier 310. The OIS-x magnet 510 may be fixed to the OIS carrier 310. The OIS-x magnet 510 may be coupled to the OIS carrier 310. The OIS-x magnet 510 may be bonded to the OIS-x carrier 310 with adhesive. The OIS-x magnet 510 may be disposed within the cover member.

[0108] The OIS-x magnet 510 can interact with the OIS-x coil 520. The OIS-x magnet 510 can interact electromagnetically with the OIS-x coil 520. The OIS-x magnet 510 can be positioned corresponding to the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 can be opposite to the OIS-x coil 520. The OIS-x magnet 510 can overlap with the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x magnet 510 can overlap with the OIS-x coil 520 in the x-axis direction. The OIS-x magnet 510 can move along the x-axis direction perpendicular to the optical axis. The OIS-x magnet 510 can move along the push-pull direction with the OIS-x coil 520 through interaction with it.

[0109] The OIS-x magnet 510 may include multiple magnets. The OIS-x magnet 510 may include two magnets. The OIS-x magnet 510 may include a first magnet 511 and a second magnet 512.

[0110] The first magnet 511 can interact with the first coil 521. The first magnet 511 can interact electromagnetically with the first coil 521. The first magnet 511 can be opposite to the first coil 521. The first magnet 511 can be arranged at a position corresponding to the first coil 521.

[0111] The second magnet 512 can interact with the second coil 522. The second magnet 512 can interact electromagnetically with the second coil 522. The second magnet 512 can be opposite to the second coil 522. The second magnet 512 can be positioned at a location corresponding to the second coil 522.

[0112] For example, the first magnet 511 can be the north pole. The second magnet 512 can be the south pole. The first magnet 511 and the second magnet 512 can form a single magnet. Alternatively, in Figure 16 In the modified example illustrated, the first magnet 511a can be a bipolar magnet having an outer surface as the south pole and an inner surface as the north pole. The second magnet 512a can also be a bipolar magnet having an outer surface as the south pole and an inner surface as the north pole. However, the polarity setting can be changed in this case.

[0113] The lens driving device 10 may include an OIS-x coil 520. The OIS driving section may include the OIS-x coil 520. The OIS-x coil 520 may interact with the OIS-x magnet 510. The OIS-x coil 520 may move the OIS-x magnet 510 along the x-axis direction, which is perpendicular to the optical axis. The OIS-x coil 520 may cause the OIS-x magnet 510 to move along the x-axis direction through its interaction with the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 may be opposite to the OIS-x magnet 510. The OIS-x coil 520 may be positioned at a location corresponding to the OIS-x magnet 510. The OIS-x coil 520 may overlap with the OIS-x magnet 510 in a direction perpendicular to the optical axis. The OIS-x coil 520 may be disposed on the substrate 120. The OIS-x coil 520 can be mounted on the base 110.

[0114] When current is applied to the OIS-x coil 520, the OIS-x magnet 510 can move away from or toward the OIS-x coil 520 along the x-axis.

[0115] The OIS-x coil 520 may include multiple coils. The OIS-x coil 520 may include two coils. The OIS-x coil 520 may include two coils controlled separately. The OIS-x coil 520 may include two electrically isolated coils. The OIS-x coil 520 may include a first coil 521 and a second coil 522. The OIS-x coil 520 may include a first coil 521 controlled by a detection value from a first sensor 531. The OIS-x coil 520 may include a second coil 522 controlled by a detection value from a second sensor 532.

[0116] The lens driving device 10 may include an OIS-x sensor 530. The OIS driving section may include the OIS-x sensor 530. The OIS-x sensor 530 may be disposed on the substrate 120. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 can detect an OIS-x magnet 510. The OIS-x sensor 530 can detect the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may overlap with the OIS-x magnet 510 in the x-axis direction. The OIS-x sensor 530 may be disposed within an OIS-x coil 520. The OIS-x sensor 530 may overlap with the OIS-x coil 520 in the optical axis direction. The OIS-x sensor 530 may overlap with the OIS-x coil 520 in the y-axis direction. The OIS-x sensor 530 may face the OIS-x magnet 510. The OIS-x sensor 530 may be disposed at a position corresponding to the OIS-x magnet 510. The OIS-x sensor 530 can detect the movement of the OIS-x magnet 510. The amount or position of the movement of the OIS-x magnet 510 detected by the OIS-x sensor 530 can be used for feedback of optical image stabilization drive in the x-axis direction.

[0117] The OIS-x sensor 530 may include multiple sensors. The OIS-x sensor 530 may include two sensors. The OIS-x sensor 530 may include a first sensor 531 and a second sensor 532.

[0118] The first sensor 531 can detect the first magnet 511. The first sensor 531 can be disposed within the first coil 521. The second sensor 532 can detect the second magnet 512. The sensor 532 can be disposed within the second coil 522.

[0119] The lens driving device 10 may include an OIS-x yoke 540. The OIS driving section may include the OIS-x yoke 540. The OIS-x yoke 540 can apply an attractive force to the OIS-x magnet 510. The OIS-x yoke 540 may face the OIS-x magnet 510. The OIS-x yoke 540 may be positioned at a location corresponding to the OIS-x magnet 510. The OIS-x yoke 540 may be mounted on the AF support member 210.

[0120] The OIS-x yoke 540 may include multiple yokes. The OIS-x yoke 540 may include two yokes. The OIS-x yoke 540 may include a first yoke 541 and a second yoke 542. The first yoke 541 may apply an attractive force to a first magnet 511. The second yoke 542 may apply an attractive force to a second magnet 512.

[0121] The lens driving device 10 may include an OIS-y driving section 600. The OIS driving section 600 can move the OIS carrier 310 along the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction. The OIS-y driving section 600 can move the OIS carrier 310 along the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction, using electromagnetic force. The OIS-y driving section 600 may include a coil and a magnet.

[0122] The lens driving device 10 may include an OIS-y magnet 610 and an OIS-y coil 620 that move the OIS moving part 300 along the y-axis direction, which is perpendicular to the optical axis and the x-axis direction. The lens driving device 10 may include an OIS-y magnet 610 and an OIS-y coil 620 that move the OIS carrier 310 along the y-axis direction, which is perpendicular to the optical axis and the x-axis direction.

[0123] In this embodiment, the OIS-y magnet 610 and the OIS-y coil 620 can move the OIS moving part 300 along a second direction perpendicular to both the optical axis and the first direction. This second direction can be the y-axis direction. Through the interaction of the OIS-y coil 620 and the OIS-y magnet 610, the OIS carrier 310 can move along the y-axis direction, which is perpendicular to both the optical axis and the x-axis. The OIS-y magnet 610 and the OIS carrier 310 can move integrally along the y-axis direction. The OIS-y magnet 610 can overlap with the AF magnet 410 in the second direction. The OIS-y magnet 610 can overlap with the AF magnet 410 in the y-axis direction.

[0124] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving section 600 may include an OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet". The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 610 may be disposed in the OIS moving section 300. The OIS-y magnet 610 may be spaced apart from the OIS-x magnet 510. The OIS-y magnet 610 may be spaced apart from the AF magnet 410. The OIS-y magnet 610 may be disposed in the OIS carrier 310. The OIS-y magnet 610 may be disposed on the outer surface of the OIS carrier 310. The OIS-y magnet 610 may be fixed to the OIS carrier 310. The OIS-y magnet 610 may be coupled to the OIS carrier 310. The OIS-y magnet 610 may be bonded to the OIS carrier 310 by adhesive. The OIS-y magnet 610 can be installed inside the cover component.

[0125] The OIS-y magnet 610 can interact with the OIS-y coil 620. The OIS-y magnet 610 can interact electromagnetically with the OIS-y coil 620. The OIS-y magnet 610 can be positioned corresponding to the OIS-y coil 620. The OIS-y magnet 610 can face the OIS-y coil 620. The OIS-y magnet 610 can be opposite to the OIS-y coil 620. The OIS-y magnet 610 can overlap with the OIS-y coil 620 in a direction perpendicular to the optical axis. The OIS-y magnet 610 can overlap with the OIS-y coil 620 in the y-axis direction. The OIS-y magnet 610 can move along the y-axis direction.

[0126] The OIS-y magnet 610 can move along the push-pull direction with the OIS-y coil 620 through interaction with the OIS-y coil 620.

[0127] The OIS-y magnet 610 may include multiple magnets. The OIS-y magnet 610 may include two magnets. The OIS-y magnet 610 may include a first magnet 611 and a second magnet 612.

[0128] The first magnet 611 can interact with the first coil 621. The first magnet 611 can interact electromagnetically with the first coil 621. The first magnet 611 can face the first coil 621. The first magnet 611 can be positioned at a location corresponding to the first coil 621.

[0129] The second magnet 612 can interact with the second coil 622. The second magnet 612 can interact electromagnetically with the second coil 622. The second magnet 612 can face the second coil 622. The second magnet 612 can be positioned at a location corresponding to the second coil 622.

[0130] For example, the first magnet 611 can be the north pole. The second magnet 612 can be the south pole. The first magnet 611 and the second magnet 612 can form a single magnet. Alternatively, in Figure 16 In the modified example illustrated, the first magnet 611a can be a bipolar magnet having an outer surface as the south pole and an inner surface as the north pole. The second magnet 612a can also be a bipolar magnet having an outer surface as the south pole and an inner surface as the north pole. However, the polarity setting can be changed in this case.

[0131] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving section 600 may also include an OIS-y coil 620. The OIS-y coil 620 may interact with an OIS-y magnet 610. The OIS-y coil 620 may be positioned on the opposite side of the AF coil 420 relative to the optical axis. The OIS-y coil 620 may move the OIS-y magnet 610 along the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction. The OIS-y coil 620 may cause the OIS-y magnet 610 to move along the y-axis direction through its interaction with the OIS-y magnet 610. The OIS-y coil 620 may face the OIS-y magnet 610. The OIS-y coil 620 may be opposite the OIS-y magnet 610. The OIS-y coil 620 may be positioned at a location corresponding to the OIS-y magnet 610. The OIS-y coil 620 can overlap with the OIS-y magnet 610 in a direction perpendicular to the optical axis. The OIS-y coil 620 can be disposed on the substrate 120.

[0132] When current is applied to the OIS-y coil 620, the OIS-y magnet 610 can move away from or toward the OIS-y coil 620 along the y-axis.

[0133] The OIS-y coil 620 may include multiple coils. The OIS-y coil 620 may include two coils. The OIS-y coil 620 may include two coils controlled separately. The OIS-y coil 620 may include two electrically isolated coils. The OIS-y coil 620 may include a first coil 621 and a second coil 622. The OIS-y coil 620 may include a first coil 621 controlled by a detection value from a first sensor 631. The OIS-y coil 620 may include a second coil 622 controlled by a detection value from a second sensor 632.

[0134] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving section 600 may also include an OIS-y sensor 630. The OIS-y sensor 630 may be disposed on the substrate 120. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 can detect an OIS-y magnet 610. The OIS-y sensor 630 can detect the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may overlap with the OIS-y magnet 610 in the optical axis direction. The OIS-y sensor 630 may be disposed within an OIS-y coil 620. The OIS-y magnet 630 may overlap with the OIS-y coil 620 in the optical axis direction. The OIS-y sensor 630 may face the OIS-y magnet 610. The OIS-y sensor 630 can be positioned at a location corresponding to the OIS-y magnet 610. The OIS-y sensor 630 can detect the movement of the OIS-y magnet 610. The amount of movement or position of the OIS-y magnet 610 detected by the OIS-y sensor 630 can be used for feedback in the optical image stabilization drive in the y-axis direction.

[0135] The OIS-y sensor 630 may include multiple sensors. The OIS-y sensor 630 may include two sensors. The OIS-y sensor 630 may include a first sensor 631 and a second sensor 632.

[0136] The first sensor 631 can detect the first magnet 611. The first sensor 631 can be disposed within the first coil 621. The second sensor 632 can detect the second magnet 612. The sensor 632 can be disposed within the second coil 622.

[0137] The lens driving device 10 may include an OIS-y yoke 640. The OIS driving section may include the OIS-y yoke 640. The OIS-y yoke 640 can apply an attractive force to the OIS-y magnet 610. The OIS-y coil 640 may face the OIS-y magnet 610. The OIS-y yoke 640 may be positioned corresponding to the OIS-y magnet 610. The OIS-y coil 640 may be mounted on the AF carrier 210.

[0138] The OIS-y yoke 640 may include multiple yokes. The OIS-y yoke 640 may include two yokes. The OIS-y yoke 640 may include a first yoke 641 and a second yoke 642. The first yoke 641 may apply an attractive force to a first magnet 611. The second yoke 642 may apply an attractive force to a second magnet 612.

[0139] The lens driving device 10 may include a guiding member. The guiding member can guide the moving part to move relative to the fixed part in a specific direction.

[0140] The lens driving device 10 may include an AF guiding ball 710. The guiding member may include the AF guiding ball 710. The AF guiding ball 710 can guide the movement of the AF moving portion 200 relative to the fixed portion 100 along the optical axis. The AF guiding ball 710 can guide the movement of the AF carrier 210 relative to the base 110 along the optical axis. The AF guiding ball 710 may be disposed between the fixed portion 100 and the AF moving portion 200. The AF guiding ball 710 may be disposed between the base 110 and the AF carrier 210. The AF guiding ball 710 may be disposed between the base 110 and the AF carrier 210 along the y-axis direction. Alternatively, the AF guiding ball 710 may be disposed between the base 110 and the AF carrier 210 in the x-direction. The AF guiding ball 710 may be disposed in a groove 111 of the base 110. The AF guide ball 710 can be disposed in the groove 211 of the AF support member 210. The AF guide ball 710 can be disposed between the groove 111 of the base 110 and the groove 211 of the AF support member 210. The AF guide ball 710 can be spherical. The AF guide ball 710 can be formed of metal. Grease can be applied to the surface of the AF guide ball 710.

[0141] The AF guide ball 710 can move along a guide rail formed between the base 110 and the AF support member 210. The guide rail can be formed by grooves 111 and 211. The AF guide ball 710 can move along the guide rail formed between the base 110 and the AF support member 210 in the optical axis direction. The guide rail can be formed in the optical axis direction. A protrusion of the AF support member 210 can be provided on the upper side of the guide rail. This prevents the AF guide ball 710 from separating upward from the guide rail.

[0142] The AF guiding ball 710 may include a first ball having a first diameter and a second ball having a second diameter smaller than the first diameter. In other words, the diameter of the second ball may be smaller than the diameter of the first ball. The AF guiding ball 710 may include balls with different diameters.

[0143] The lens driving device 10 may include an OIS guide ball 720. The OIS guide ball 720 can guide the movement of the OIS carrier 310 relative to the AF carrier 210 in a direction perpendicular to the optical axis. The OIS guide ball 720 may be disposed between the AF moving portion 200 and the OIS moving portion 300. The OIS guide ball 720 may be disposed between the AF carrier 210 and the OIS carrier 310. The OIS guide ball 720 may be disposed in the optical axis direction between the AF carrier 210 and the OIS carrier 310. The OIS guide ball 720 may be disposed in the groove 212 of the AF carrier 210. The OIS guide ball 720 may be disposed in the groove 311 of the OIS carrier 310. The OIS guide ball 720 may be disposed between the groove 212 of the AF carrier 210 and the groove 311 of the OIS carrier 310.

[0144] The OIS guide spherical member 720 can guide the OIS moving portion 300 to move along the x-axis and y-axis directions. The OIS guide spherical member 720 can guide the movement of the OIS moving portion 300 along the x-axis and y-axis directions. The OIS guide spherical member 720 can guide the OIS carrier 310 to move relative to the AF carrier 210 along the x-axis and y-axis directions perpendicular to the optical axis. In other words, the OIS guide spherical member 720 can guide the movement of the OIS carrier 310 along both the x-axis and y-axis directions. In other words, the OIS guide spherical member 720 can guide movement along both the x-axis and y-axis directions. For reference, compared to a comparative example where the spherical members guiding the x-axis and y-axis directions are separately provided, the size of the lens driving device 10 in this embodiment, where the spherical members guiding the x-axis and y-axis directions are integrally provided, can be minimized. In particular, the height of the lens driving device 10 in the optical axis direction can be reduced. As a result, the height protruding from the smartphone, i.e., the shoulder height, can be minimized.

[0145] The OIS guiding ball 720 may include multiple balls. The OIS guiding ball 720 may include four balls. The OIS guiding ball 720 may include first to fourth balls 721, 722, 723, and 724. Each of the first to fourth balls 721, 722, 723, and 724 may contact one of the AF carrier 210 and the OIS carrier 310 at three or more points.

[0146] The OIS guiding ball 720 may contact one of the AF carrier 210 and the OIS carrier 310 at three or more points. The OIS guiding ball 720 may contact the other of the AF carrier 210 and the OIS carrier 310 at one point. Alternatively, the OIS guiding ball 720 may contact the other of the AF carrier 210 and the OIS carrier 310 at two points. The OIS guiding ball 720 may contact the other of the AF carrier 210 and the OIS carrier 310 at one point in the initial position where no current is applied to the coil, and may contact the other of the AF carrier 210 and the OIS carrier 310 at two points when current is applied to the coil and the coil moves to its maximum along the x-axis or y-axis direction.

[0147] The OIS guide ball 720 can contact the AF carrier 210 at four points. Alternatively, the OIS guide ball 720 can contact the OIS carrier 310 at one or two points. As a modified example, the OIS guide ball 720 can contact the OIS carrier 210 at four points. Alternatively, the OIS guide ball 720 can contact the AF carrier 210 at one or two points. The OIS guide ball 720 can move in a rolling manner. The OIS guide ball 720 can rotate.

[0148] As a modification example, the OIS guide ball 720 can be fixed to the AF carrier 210 or the OIS carrier 310 using adhesive. The OIS guide ball 720 can slide relative to the other of the AF carrier 210 and the OIS carrier 310.

[0149] As a modification example, one of the AF carrier 210 and the OIS carrier 310 may include a hemispherical protrusion that contacts a groove in the other of the AF carrier 210 and the OIS carrier 310. In this case, the protrusion can slide along the groove.

[0150] The lens driving device 10 may include a spherical element pressing member. The spherical element pressing member can press the spherical element to prevent separation. The spherical element pressing member can press the spherical element onto a relevant object. The spherical element pressing member may include a yoke, magnets, and an attractive force acting on the yoke. The spherical elements 710 and 720 can be pressed by the attractive force between magnets 410, 510, 610 and yokes 440, 540, 640. The AF guiding spherical element 710 can be pressed by the attractive force between the AF yoke 410 and the AF magnet 440. The OIS guiding spherical element 720 can be pressed by the attractive force between the OIS-x magnet 510 and the OIS-x yoke 540, and the attractive force between the OIS-y magnet 610 and the OIS-y yoke 640.

[0151] The autofocus (AF) operation of the lens driving device according to this embodiment will be described below.

[0152] Figure 17 This is a diagram illustrating the AF operation of the lens driving device according to this embodiment.

[0153] In the initial position where no current is applied to the AF coil 420, the movable portion can be positioned at a certain distance from both the top plate and the base 110 of the cover member. At this time, the movable portion may include the AF movable portion 200. The movable portion may include the AF support member 210. The movable portion may include the OIS movable portion 300. The movable portion may include a lens. Furthermore, the movable portion may include the AF support member 210, the OIS support member 310, and the lens.

[0154] When current is applied to the AF coil 420, the AF moving part (see...) Figure 17 A) can move upwards or downwards along the optical axis (see Figure 17 B).

[0155] When a positive current is applied to the AF coil 420, the AF magnet 410 can move upward along the optical axis due to the electromagnetic interaction between the AF coil 420 and the AF magnet 410. At this time, the AF support member 210 can also move upward along the optical axis together with the AF magnet 410. Furthermore, the OIS support member 310 and the lens can also move upward along the optical axis together with the AF support member 210. Therefore, the distance between the lens and the image sensor 60 can be changed, allowing adjustment of the focus of the image formed on the image sensor 60 through the lens.

[0156] When a reverse current is applied to the AF coil 420, the AF magnet 410 can move downwards along the optical axis due to the electromagnetic interaction between the AF coil 420 and the AF magnet 410. At this time, the AF support 210 can move downwards along the optical axis together with the AF magnet 410. Furthermore, the OIS support 310 and the lens can move downwards along the optical axis together with the AF support 210. Therefore, the distance between the lens and the image sensor 60 can be changed, allowing adjustment of the focus of the image formed on the image sensor 60 through the lens.

[0157] The optical image stabilization (OIS) operation of the lens driving device according to this embodiment will be described below.

[0158] Figure 18 This is a diagram illustrating the OIS operation of the lens driving device according to this embodiment.

[0159] When no current is applied to the OIS-x coil 520 and the OIS-y coil 620, the moving part can be set in its initial position. At this time, the moving part may include the OIS moving part 300. The moving part may include the OIS carrier 310. The moving part may include a lens.

[0160] When current is applied to the OIS-x coil 520, the moving part (see...) Figure 18 A) can move along the x-axis (see Figure 18 B).

[0161] When current is applied to the OIS-x coil 520, due to the electromagnetic interaction between the OIS-x coil 520 and the OIS-x magnet 510, the OIS-x magnet 510 can move along the x-axis direction, which is perpendicular to the optical axis. At this time, the OIS carrier 310 can move along the x-axis direction together with the OIS-x magnet 510. Furthermore, the lens can move along the x-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x magnet 510, the OIS carrier 310, and the lens can move in one direction along the x-axis. Conversely, when a reverse current is applied to the OIS-x coil 520, the OIS-x magnet 510, the OIS carrier 310, and the lens can move in the other direction along the x-axis.

[0162] When current is applied to the OIS-y coil 620, the moving part (see...) Figure 18 A) can move along the y-axis (see Figure 18 (C).

[0163] When current is applied to the OIS-y coil 620, due to the electromagnetic interaction between the OIS-y coil 620 and the OIS-y magnet 610, the OIS-y magnet 610 can move along the y-axis direction, which is perpendicular to the optical axis. At this time, the OIS carrier 310 can move along the y-axis direction together with the OIS-y magnet 610. Furthermore, the lens can move along the y-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS carrier 310, and the lens can move in one direction along the y-axis. Conversely, when a reverse current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS carrier 310, and the lens can move in the other direction along the y-axis.

[0164] Simultaneously, the OIS-x sensor 530 can detect the motion or position of the OIS-x magnet 510 by detecting the strength of its magnetic field. The motion or position detected by the OIS-x sensor 530 can be used for optical image stabilization feedback control in the x-axis direction. The OIS-y sensor 630 can detect the motion or position of the OIS-y magnet 610 by detecting the strength of its magnetic field. The motion or position detected by the OIS-y sensor 630 can be used for image stabilization feedback control in the y-axis direction.

[0165] Furthermore, in this embodiment, crosstalk can be prevented by controlling the first coil 521 of the OIS-x coil 520 with the detection value of the first sensor 531 of the OIS-x sensor 530 and the second coil 522 of the OIS-x coil 520 with the detection value of the second sensor 532 of the OIS-x sensor 530. More specifically, when current is applied to the OIS-x coil 520, the phenomenon of movement or rotation of the moving part along the y-axis direction can be prevented.

[0166] Furthermore, in this embodiment, by controlling the first coil 621 of the OIS-y coil 620 based on the detection value of the first sensor 631 of the OIS-y sensor 630 and controlling the second coil 622 of the OIS-y coil 620 based on the detection value of the second sensor 632 of the OIS-y sensor 630, crosstalk can be prevented. More specifically, when current is applied to the OIS-y coil 620, the phenomenon of movement or rotation of the moving part along the x-axis direction can be prevented.

[0167] In the following description, the camera device according to this embodiment will be described with reference to the accompanying drawings.

[0168] Figure 19 This is an exploded perspective view of the camera device according to this embodiment.

[0169] The camera device 10A may include a camera module.

[0170] The camera device 10A may include a lens module 20. The lens module 20 may include at least one lens. The lens may be positioned corresponding to the image sensor 60. The lens module 20 may include a lens and a lens barrel. The lens module 20 may be coupled to the OIS carrier 310 of the lens drive device 10. The lens module 20 may be coupled to the OIS carrier 310 via threaded connection and / or adhesive. The lens module 20 may move integrally with the OIS carrier 310.

[0171] Camera device 10A may include a filter 30. The filter 30 can block light of a specific frequency band from passing through lens module 20 and incident on image sensor 60. The filter 30 may be arranged parallel to the xy plane. The filter 30 may be disposed between lens module 20 and image sensor 60. The filter 30 may be disposed on sensor base 40. As a modified example, filter 30 may be disposed on base 110. Filter 30 may include an infrared filter. The infrared filter can block light in the infrared region from incident on image sensor 60.

[0172] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens drive device 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 41 on which a filter 30 is disposed. An opening may be formed in the portion of the sensor base 40 on which the filter 30 is disposed, allowing light passing through the filter 30 to be incident on the image sensor 60. An adhesive member may be used to attach or adhere the base 110 of the lens drive device 10 to the sensor base 40. The adhesive member may also be used to prevent foreign matter from entering the interior of the lens drive device 10. The adhesive member may include at least one of epoxy resin, thermosetting adhesive, and UV-curable adhesive.

[0173] Camera device 10A may include a printed circuit board (PCB) 50. The PCB 50 may be a substrate or a circuit board. A lens driving device 10 may be disposed on the PCB 50. A sensor base 40 may be disposed between the PCB 50 and the lens driving device 10. The PCB 50 may be electrically connected to the lens driving device 10. An image sensor 60 may be disposed on the PCB 50. Various circuits, components, control parts, etc., may be disposed on the PCB 50 to convert the image formed on the image sensor 60 into an electrical signal and transmit the electrical signal to an external device.

[0174] Camera device 10A may include image sensor 60. Image sensor 60 may be configured to form an image using incident light passing through lens and filter 30. Image sensor 60 may be mounted on printed circuit board 50. Image sensor 60 may be electrically connected to printed circuit board 50. For example, image sensor 60 may be connected to printed circuit board 50 using surface mount technology (SMT). As another example, image sensor 60 may be connected to printed circuit board 50 using flip chip technology. Image sensor 60 may be configured such that its optical axis is aligned with the optical axis of the lens. In other words, the optical axis of image sensor 60 and the optical axis of lens may be aligned. Image sensor 60 may convert light incident on its effective image area into an electrical signal. Image sensor 60 may be any of CCD (charge-coupled device), MOS (metal-oxide-semiconductor), CPD, and CID.

[0175] The camera device 10A may include a motion sensor 70. The motion sensor 70 may be mounted on a printed circuit board 50. The motion sensor 70 may be electrically connected to a control section 80 via circuit patterns provided on the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information due to the movement of the camera device 10A. The motion sensor 70 may include a dual-axis or tri-axis gyroscope sensor or an angular velocity sensor.

[0176] The camera device 10A may include a control section 80. The control section 80 may be disposed on a printed circuit board 50. The control section 80 may be electrically connected to the coil 330 of the lens drive section 10. The control section 80 may independently control the direction, intensity, and amplitude of the current supplied to the coil 330. The control section 80 may control the lens drive section 10 to perform autofocus and / or optical image stabilization functions. Furthermore, the control section 80 may perform autofocus feedback control and / or optical image stabilization feedback control on the lens drive section 10.

[0177] The camera device 10A may include a connector 90. The connector 90 may be electrically connected to a printed circuit board 50. The connector 90 may include a port for electrical connection to an external device.

[0178] In the following description, the optical device according to this embodiment will be described with reference to the accompanying drawings.

[0179] Figure 20 This is a perspective view of the optical device according to this embodiment. Figure 21 This is a perspective view of an optical device based on a modified example.

[0180] Optical device 1 may include one or more of the following: mobile phone, cellular phone, portable terminal, mobile terminal, smartphone, smart board, portable smart device, digital camera, laptop computer, digital broadcasting terminal, PDA (personal digital assistant), PMP (portable multimedia player), and navigation device. Optical device 1 may include any device for capturing video or images.

[0181] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10A. The camera device 10A may be mounted on the main body 20. The camera device 10A can capture objects. The optical device 1 may include a display. The display may be mounted on the main body 20. The display may output one or more of the images and videos captured by the camera device 10A. The display may be mounted on a first surface of the main body 20. The camera device 10A may be mounted on one or more of the first surface and a second surface opposite to the first surface of the main body 20. Figure 20 As illustrated, the camera device 10A can have three cameras arranged vertically. Figure 21 As illustrated, the camera device 10A-1 can have three cameras arranged horizontally. As a modified example, the three cameras can be arranged such that the imaginary straight lines connecting the first optical axis, the second optical axis, and the third optical axis form a triangle.

[0182] Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that the present disclosure may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative rather than restrictive in all respects.

Claims

1. A lens driving device, comprising: Base; A first support member is disposed in the base; A second support member is disposed within the first support member; A first coil and a first magnet, the first coil and the first magnet being configured to move the first carrier along the optical axis; A second coil and a second magnet, the second coil and the second magnet being configured to move the second carrier along a first direction perpendicular to the optical axis; A third coil and a third magnet, the third coil and the third magnet being configured to move the second carrier member along a second direction perpendicular to the optical axis direction and the first direction; as well as A spherical component is disposed between the first support component and the second support component. The second coil comprises two separately controlled coils, and The spherical member contacts one of the first and second carrier members at three or more points.

2. The lens driving device according to claim 1, wherein, The spherical member contacts the other of the first and second carrier members at a point.

3. The lens driving device according to claim 1, wherein, The spherical component comprises four spherical components, and Each of the four spherical members is in contact with one of the first and second carrier members at three or more points.

4. The lens driving device according to claim 1, wherein, The spherical component contacts the first carrier component at four points.

5. The lens driving device according to claim 1, further comprising a second sensor configured to detect the second magnet. in, The second sensor includes a second-first sensor and a second-second sensor, and The two coils include a second-first coil controlled by the detection value of the second-first sensor and a second-second coil controlled by the detection value of the second-second sensor.

6. The lens driving device according to claim 1, comprising a second-first sensor and a second-second sensor for detecting the second magnet. in, The two coils include a second-first coil and a second-second coil. Wherein, the second-first sensor is disposed in the second-first coil, and The second-second sensor is disposed in the second-second coil.

7. The lens driving device according to claim 1, wherein, The third coil comprises two separately controlled coils.

8. The lens driving device according to claim 1, further comprising a third sensor configured to detect the third magnet. in, The third sensor includes a third-first sensor and a third-second sensor, and The third coil includes a third-first coil controlled by the detection value of the third-first sensor and a third-second coil controlled by the detection value of the third-second sensor.

9. The lens driving device according to claim 1, wherein, The spherical member is fixed to one of the first carrier and the second carrier with adhesive.

10. A lens driving device, comprising: Base; A first support member is disposed in the base; A second support member is disposed within the first support member; A first coil and a first magnet, the first coil and the first magnet being configured to move the first carrier along the optical axis; A second coil and a second magnet, the second coil and the second magnet being configured to move the second carrier along a first direction perpendicular to the optical axis; as well as A third coil and a third magnet, the third coil and the third magnet being configured to move the second carrier member along a second direction perpendicular to the optical axis and the first direction. The second coil comprises two separately controlled coils, and One of the first support member and the second support member includes a hemispherical protrusion that contacts a groove in the other of the first support member and the second support member.

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