Lens driving device, camera device, and optical apparatus

Abstract

This embodiment relates to a lens driving device including a base, a first holder disposed within the base, a second holder disposed within the first holder, a bobbin disposed within the second holder, a first driving unit that moves the first holder in the z-axis direction along the optical axis, a second driving unit that moves the second holder in the y-axis direction perpendicular to the z-axis direction, a third driving unit that moves the bobbin in the x-axis direction perpendicular to the z-axis direction and the y-axis direction, and the first to third driving units each include a coil and a magnet.

Description

Technical Field

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

Background Art

[0002] A camera device is a device that captures a subject in a photograph or video, and is mounted on an optical device such as a smartphone, a drone, a vehicle, etc.

[0003] An autofocus function in which the focus is automatically adjusted according to the distance of the subject is applied to the camera device. In addition, an anti-shake function for preventing the phenomenon that the focus shakes due to the user's hand shake is applied.

[0004] By the way, in order to arrange components such as a magnet and a coil for performing the autofocus function and the anti-shake function, a size larger than the thickness of the smartphone in the optical axis direction is required, and there is a problem that the camera device mounted on the smartphone protrudes more than other parts of the smartphone.

[0005] (Patent Document 1) Korean Patent Publication No. 10-2015-0118005

Summary of the Invention

Problems to be Solved by the Invention

[0006] This embodiment attempts to provide a camera device that has an autofocus function and an anti-shake function, and in which the size in the optical axis direction is minimized.

Means for Solving the Problems

[0007] The lens driving device according to this embodiment includes a base, a first holder disposed within the base, a second holder disposed within the first holder, a bobbin disposed within the second holder, a first driving unit that moves the first holder in the z-axis direction along the optical axis, a second driving unit that moves the second holder in the y-axis direction perpendicular to the z-axis direction, a third driving unit that moves the bobbin in the x-axis direction perpendicular to the z-axis direction and the y-axis direction, the first to third driving units each include a coil and a magnet, the first driving unit includes a coil coupled to one of the base and the first holder and a magnet coupled to the other of the base and the first holder, the second driving unit includes a coil coupled to one of the base and the second holder and a magnet coupled to the other of the base and the second holder, and the third driving unit can include a coil coupled to one of the base and the bobbin and a magnet coupled to the other of the base and the bobbin.

[0008] The first holder and the second holder may be separated.

[0009] The first side wall of the first holder and the first side wall of the second holder may overlap in the x-axis direction and be disposed on one side of the bobbin.

[0010] It may include a first ball disposed between the second side wall of the first holder and the second side wall of the base.

[0011] It may include a second ball disposed between the first side wall of the first holder and the first side wall of the second holder.

[0012] It may include a third ball disposed between the second side wall of the second holder and the bobbin.

[0013] The lens driving device according to this embodiment includes a fixed part, a first moving part that moves in the z-axis direction along the optical axis with respect to the fixed part, a second moving part that moves in the y-axis direction perpendicular to the z-axis direction, and a third moving part that moves in the x-axis direction perpendicular to the z-axis direction and the y-axis direction. It can include a first ball disposed between the second side wall of the first moving part and the second side wall of the fixed part, a second ball disposed between the first side wall of the first moving part and the first side wall of the second moving part, and a third ball disposed between the second side wall of the second moving part and the third moving part.

[0014] The lens driving device according to this embodiment includes a base, a first holder that moves in the z-axis direction along the optical axis with respect to the base, a second holder that moves in the y-axis direction perpendicular to the z-axis direction, and a bobbin that moves in the x-axis direction perpendicular to the z-axis direction and the y-axis direction. It includes a first ball disposed between the second side wall of the first holder and the second side wall of the base, a second ball disposed between the first side wall of the first holder and the first side wall of the second holder, and a third ball disposed between the second side wall of the second holder and the bobbin. The first holder and the second holder can be separated.

[0015] The lens driving device according to this embodiment includes a base, a first holder disposed within the base, a second holder disposed within the first holder, a third holder disposed within the second holder, a first driving part that moves the first holder in a direction along the optical axis, a second driving part that moves the second holder in a first direction perpendicular to the optical axis, a third driving part that moves the third holder in a second direction perpendicular to both the optical axis and the first direction, a first ball disposed between the base and the first holder, a second ball disposed between the first holder and the second holder, and a third ball disposed between the second holder and the third holder. The third ball can be disposed between the second holder and the third holder in the first direction.

[0016] The second ball can be disposed between the first holder and the second holder in the second direction.

[0017] The first driving part includes a first magnet disposed on the first holder and a first coil that interacts with the first magnet. The second driving part includes a second magnet disposed on the second holder and a second coil that interacts with the second magnet. The third driving part can include a third magnet disposed on the third holder and a third coil that interacts with the third magnet.

[0018] The lens driving device includes a substrate disposed on the base. The substrate includes a first part and a third part disposed on opposite sides of each other, and a second part connecting the first part and the third part. The first coil is disposed on the first part of the substrate, the second coil is disposed on the second part of the substrate, and the third coil can be disposed on the third part of the substrate.

[0019] The lens driving device can include a first yoke disposed on the first part of the substrate at a position corresponding to the first magnet, a second yoke disposed on the second part of the substrate at a position corresponding to the second magnet, and a third yoke disposed on the third part of the substrate at a position corresponding to the third magnet.

[0020] The third ball can be disposed between the inner surface of the second holder and the outer surface of the third holder.

[0021] The entire region from the lower end to the upper end of the third ball can overlap the second holder and the third holder in the first direction.

[0022] When viewed from the outside of the third holder, the third ball can overlap the third magnet in the horizontal direction.

[0023] The first holder includes a hole, and the second magnet is disposed in the hole of the first holder and can overlap the first holder in the first direction.

[0024] The second holder includes a hole, and the third magnet is disposed in the hole of the second holder and can overlap the second holder in the second direction.

[0025] The base includes a first side portion and a second side portion disposed on opposite sides of each other, and a third side portion and a fourth side portion disposed on opposite sides of each other. The second coil is disposed at a position corresponding to the third side portion of the base, and the distance between the optical axis and the fourth side portion of the base may be closer than the distance between the optical axis and the third side portion of the base.

[0026] The second holder can include a portion disposed between the first holder and the third holder in the second direction.

[0027] In the direction along the optical axis, the first holder can be non-overlapping with the second holder and the third holder.

[0028] The camera device according to this embodiment can 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.

[0029] The optical device according to this embodiment can include a main body, the camera device according to claim 14 disposed on the main body, and a display disposed on the main body and outputting any one or more of the images and images captured by the camera device.

Advantages of the Invention

[0030] Through this embodiment, an autofocus function and an anti-shake function can be performed in a camera device having a size minimized in the optical axis direction.

[0031] That is, according to this embodiment, although it is a camera device that does not protrude from the smartphone, both the autofocus function and the anti-shake function can be performed.

[0032] Furthermore, through this embodiment, it is possible to provide a camera device with a minimized size even in the horizontal and vertical directions perpendicular to the optical axis.

Brief Description of the Drawings

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Figure 1

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Figure 26

Embodiments for Carrying Out the Invention

[0055] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

[0056] However, the technical idea of the present invention is not limited to some of the described embodiments, and can be realized in various different forms. Within the scope of the technical idea of the present invention, one or more of the components among the embodiments can be selectively combined or replaced and used.

[0057] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) can be interpreted in a meaning generally understood by those with ordinary knowledge in the technical field to which the present invention pertains, unless they are clearly defined and described specifically. Terms generally used like those defined in a dictionary can be interpreted in consideration of their meaning in the context of the related art.

[0058] Also, the terms used in the embodiments of the present invention are for the purpose of explaining the embodiments and are not intended to limit the present invention.

[0059] In this specification, the singular form can also include the plural form unless otherwise specifically mentioned in the text. When it is described as "at least one (or one or more) of A, B, and C", it can include one or more of all possible combinations of A, B, and C.

[0060] In addition, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. can be used. These terms are only for distinguishing the components from other components, and the essence, order, or sequence of the components are not limited by these terms.

[0061] And when a component is described as "connected", "coupled", or "joined" to another component, that component can include not only the case where it is directly "connected", "coupled", or "joined" to the other component, but also the case where it is "connected", "coupled", or "joined" by another component between that component and the other component.

[0062] Also, when described as being formed or arranged "above (on top of)" or "below (beneath)" each component, "above (on top of)" or "below (beneath)" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or arranged between the two components. Further, when expressed as "above (on top of)" or "below (beneath)", it can include not only the upward direction but also the downward direction with respect to one component.

[0063] The "optical axis (Optical Axis, refer to OA in Fig. 18 etc.) direction" used hereinafter is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0064] The "vertical direction" used hereinafter can be a direction parallel to or the same as the optical axis direction. The vertical direction can correspond to the "z-axis direction". The "horizontal direction" used hereinafter can be a direction perpendicular to the vertical direction. That is, the horizontal direction can be a direction perpendicular to the optical axis. Therefore, the horizontal direction can include the "x-axis direction" and the "y-axis direction".

[0065] The "auto focus (AF) function" used hereinafter is defined as a function that automatically focuses on a subject by moving the lens in the optical axis direction according to the distance of the subject to adjust the distance from the image sensor so that a clear image of the subject can be obtained on the image sensor. Also, the "closed-loop auto focus (CLAF) control" is defined as a control that senses the distance between the image sensor and the lens and performs feedback control on the position of the lens in real time in order to improve the accuracy of focus adjustment.

[0066] The "handshake correction (OIS, optical image stabilization) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to cancel out the handshake in order to prevent the phenomenon of the image or video shaking due to the user's handshake. Also, the "handshake correction feedback (CLAF, closed-loop auto focus) control" is defined as a control that senses the position of the lens with respect to the image sensor and performs feedback control on the position of the lens in real time in order to improve the accuracy of handshake correction.

[0067]

[0068] Hereinafter, the configuration of the lens driving device according to the present embodiment will be described with reference to the drawings.

[0069] FIG. 1 is a perspective view of a lens driving device according to the present embodiment, FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1, FIG. 4 is a cross-sectional view showing the lens driving device according to the present embodiment cut in a direction perpendicular to the optical axis, FIG. 5 is a cross-sectional perspective view showing the arrangement structure of the first ball of the lens driving device according to the present embodiment, FIG. 6 is a cross-sectional perspective view showing the arrangement structure of the second ball of the lens driving device according to the present embodiment, FIG. 7 is a cross-sectional perspective view showing the arrangement structure of the third ball of the lens driving device according to the present embodiment, FIG. 8 is an exploded perspective view of the lens driving device according to the present embodiment, FIG. 9 is an exploded perspective view of the lens driving device seen from a direction different from FIG. 8, FIG. 10 is a perspective view of the lens driving device according to the present embodiment with the cover omitted, FIG. 11 is a perspective view showing the fixed part of the lens driving device according to the present embodiment, FIG. 12 is a perspective view showing the state of the lens driving device in FIG. 11 seen from a direction different from FIG. 11, FIG. 13 is a perspective view showing the moving part of the lens driving device according to the present embodiment, FIG. 14 is a perspective view showing the first holder of the lens driving device according to the present embodiment, FIG. 15 is a perspective view showing the second moving part and the third moving part of the lens driving device according to the present embodiment, FIG. 16 is a perspective view showing the second holder of the lens driving device according to the present embodiment, and FIG. 17 is a perspective view showing the third moving part of the lens driving device according to the present embodiment.

[0070] The lens driving device 10 may be a voice coil motor (VCM). The lens driving device 10 may be a lens driving motor. The lens driving device 10 may be a lens driving actuator. The lens driving device 10 can include an AF module. The lens driving device 10 can include an OIS module.

[0071] The lens driving device 10 can include a fixed part 100. The fixed part 100 can be a part that is relatively fixed when the moving part moves. The moving part can move relative to the fixed part 100.

[0072] The lens driving device 10 can include a base 110. The fixed part 100 can include the base 110. The base 110 can be disposed under the first holder 210. The base 110 can be disposed under the second holder 310. The base 110 can be disposed under the third holder 410. The base 110 can be coupled to the cover 140. The first holder 210, the second holder 310, and the third holder 410 can be disposed on the base 110. The first holder 210, the second holder 310, and the third holder 410 can be disposed on the lower plate 111 of the base 110.

[0073] The base 110 can include a lower plate 111. The base 110 can include side plates 112. The side plates 112 of the base 110 may be the'side portions'. The side plates 112 of the base 110 can extend from the upper surface of the lower plate 111. The side plates 112 of the base 110 can include a plurality of side plates. The side plates 112 of the base 110 can include four side plates. The base 110 can include a first side portion and a second side portion disposed opposite to each other, and a third side portion and a fourth side portion disposed opposite to each other. At this time, the second coil 610 can be disposed at a position corresponding to the third side portion of the base 110. The distance between the optical axis and the fourth side portion of the base 110 may be closer than the distance between the optical axis and the third side portion of the base 110. That is, the optical axis can be disposed offset toward the fourth side portion of the base 110 from the central axis of the base 110.

[0074] The base 110 can include a groove 113. The groove 113 may be the 'first ball receiving groove'. The first ball 810 can be disposed in the groove 113. The groove 113 can be in direct contact with the first ball 810. The groove 113 can be disposed in the optical axis direction. The groove 113 can include a plurality of grooves. The groove 113 can include two grooves. The two grooves can be disposed parallel to each other. The groove 113 can include a first groove that contacts the first ball 810 at two points and a second groove that contacts the first ball 810 at one point. As a modification, both the first groove and the second groove may contact the first ball 810 at two points.

[0075] The lens driving device 10 can include a substrate 120. The fixing portion 100 can include the substrate 120. The substrate 120 can be disposed on the base 110. The substrate 120 can be disposed on the side plate 112 of the base 110. The substrate 120 can be disposed on the outer surface of the side plate 112 of the base 110. The substrate 120 may be a circuit board. The substrate 120 may be a printed circuit board. The substrate 120 can include an FPCB (Flexible printed circuit board). The substrate 120 can be disposed parallel to the optical axis. The substrate 120 may be bent. The substrate 120 may be bent multiple times. The substrate 120 may be bent twice.

[0076] The substrate 120 can include a first portion and a third portion disposed on opposite sides of each other, and a second portion connecting the first portion and the third portion. At this time, the first coil 510 can be disposed on the first portion of the substrate 120. The second coil 610 can be disposed on the second portion of the substrate 120. The third coil 710 can be disposed on the third portion of the substrate 120.

[0077] The substrate 120 can include a body portion. Coils 510, 610, and 710 can be disposed on the body portion. The substrate 120 can include a terminal portion 121. The terminal portion 121 can extend downward from the body portion. The terminal portion 121 can be formed at the lower end of the substrate 120. The terminal portion 121 can protrude under the base 110. The terminal portion 121 can include terminals. The terminal portion 121 can include a plurality of terminals. The plurality of terminals of the substrate 120 can be electrically connected to the driver IC 530. The plurality of terminals of the substrate 120 can be electrically connected to the sensors 630 and 730. The plurality of terminals of the substrate 120 can be electrically connected to the second coil 610 and the third coil 710. The terminal portion 121 can be coupled to the printed circuit board 50.

[0078] The lens driving device 10 can include a yoke 130. The fixed part 100 can include the yoke 130. The yoke 130 may be a 'drawing member'. The yoke 130 can be formed of metal. An attractive force can be generated between the yoke 130 and the magnets 520, 620, 720. Due to the attractive force between the yoke 130 and the magnets 520, 620, 720, the balls 810, 820, 830 can be pressurized. The yoke 130 can be disposed on the substrate 120. The yoke 130 can be disposed on the outer surface of the substrate 120.

[0079] The yoke 130 can include a plurality of yokes. The yoke 130 can include three yokes. The yoke 130 can include first to third yokes 131, 132, 133. The first to third yokes 131, 132, 133 may be spaced apart from each other.

[0080] The yoke 130 can include a first yoke 131. The first yoke 131 may be an 'AF yoke'. The first yoke 131 can be disposed on the first part of the substrate 120. The first yoke 131 can be disposed on the outer surface of the first part of the substrate 120. The first yoke 131 can be disposed at a position corresponding to the first magnet 520. An attractive force can be generated between the first yoke 131 and the first magnet 520. Due to the attractive force between the first yoke 131 and the first magnet 520, the first ball 810 can be pressurized. Due to the attractive force between the first yoke 131 and the first magnet 520, the first ball 810 can be pressurized between the first holder 210 and the base 110.

[0081] The yoke 130 can include a second yoke 132. The second yoke 132 may be an 'OIS-x yoke'. The second yoke 132 can be disposed on a second portion of the substrate 120. The second yoke 132 can be disposed on an outer surface of the second portion of the substrate 120. The second yoke 132 can be disposed at a position corresponding to the second magnet 620. An attractive force can be generated between the second yoke 132 and the second magnet 620. Due to the attractive force between the second yoke 132 and the second magnet 620, the second ball 820 can be pressurized. Due to the attractive force between the second yoke 132 and the second magnet 620, the second ball 820 can be pressurized between the second holder 310 and the first holder 210.

[0082] The yoke 130 can include a third yoke 133. The third yoke 133 may be an 'OIS-y yoke'. The third yoke 133 can be disposed on a second portion of the substrate 120. The third yoke 133 can be disposed on an outer surface of the second portion of the substrate 120. The third yoke 133 can be disposed at a position corresponding to the third magnet 720. An attractive force can be generated between the third yoke 133 and the third magnet 720. Due to the attractive force between the third yoke 133 and the third magnet 720, the third ball 830 can be pressurized. Due to the attractive force between the third yoke 133 and the third magnet 720, the third ball 830 can be pressurized between the third holder 410 and the second holder 310.

[0083] The lens driving device 10 can include a cover 140. The fixed portion 100 can include a cover 140. The cover 140 may be disposed on the base 110. The cover 140 may be coupled to the base 110. The cover 140 may be fixed to the base 110. The cover 140 can accommodate the first holder 210 therein. The cover 140 can accommodate the second holder 310 therein. The cover 140 can accommodate the third holder 410 therein. The cover 140 may be a shielding member. The cover 140 may be a shielding can.

[0084] The cover 140 may include an upper plate 141. The upper plate 141 may be disposed on the moving part. The upward movement of the moving part may be restricted by the moving part coming into contact with the upper plate 141. The upper plate 141 may include holes through which light passes.

[0085] The cover 140 may include side plates 142. The side plates 142 may extend from the upper plate 141. The side plates 142 may be disposed on the base 110. The side plates 142 may be disposed on a step portion that protrudes from the lower end of the outer surface of the base 110. The side plates 142 may include a plurality of side plates. The side plates 142 may include four side plates. The side plates 142 may include a first side plate and a second side plate disposed opposite to each other, and a third side plate and a fourth side plate disposed opposite to each other.

[0086] The lens driving device 10 may include a moving part. The moving part may be disposed on the fixed part 100. The moving part may be disposed within the fixed part 100. The moving part may be disposed on the fixed part 100. The moving part may be movably disposed on the fixed part 100. The moving part may move with respect to the fixed part 100 by a driving part. The moving part may move during AF driving. The moving part may move during OIS driving. A lens may be coupled to the moving part.

[0087] The lens driving device 10 may include a first moving part 200. The first moving part 200 may be an 'AF moving part'. The first moving part 200 may be disposed on the fixed part 100. The first moving part 200 may be disposed within the fixed part 100. The first moving part 200 may be disposed on the fixed part 100. The first moving part 200 may be disposed between the fixed part 100 and the second moving part 300. The first moving part 200 may be disposed between the fixed part 100 and the third moving part 400. The first moving part 200 may be movably disposed on the fixed part 100. The first moving part 200 may move in the optical axis direction with respect to the fixed part 100 by the first driving part 500. The first moving part 200 may move during AF driving.

[0088] The lens driving device 10 can include a first holder 210. The first moving part 200 can include the first holder 210. The first holder 210 may be an 'AF holder'. The first holder 210 may be an 'AF carrier'. The first holder 210 can be arranged within the base 110. The first holder 210 can be arranged on the base 110. The first holder 210 can be arranged within the cover 140. The first holder 210 can be arranged between the base 110 and the second holder 310. The first holder 210 can be arranged between the base 110 and the third holder 410. The first holder 210 can be arranged to be movable in the optical axis direction.

[0089] In the optical axis direction, the first holder 210 can be arranged not to overlap with both the second holder 310 and the third holder 410. The first holder 210 can overlap with the second holder 310 and the third holder 410 in a direction perpendicular to the optical axis. As a modification, a stopper may be formed on the first holder 210. At this time, the stopper of the first holder 210 can overlap with any one or more of the second holder 310 and the third holder 410 in the optical axis direction.

[0090] The first holder 210 can include a hole 211. The hole 211 may be a'second holder avoidance hole'. The hole 211 can be formed on the side plate of the first holder 210. The hole 211 can penetrate the first holder 210 in a direction perpendicular to the optical axis. The hole 211 may be formed as a groove recessed from the upper surface or the lower surface of the first holder 210. A part of the second holder 310 can be arranged in the hole 211. The second magnet 620 can be arranged in the hole 211.

[0091] The first holder 210 can include a first groove 212. The first groove 212 may be a 'first ball receiving groove'. A first ball 810 can be disposed in the first groove 212. The first groove 212 can be in direct contact with the first ball 810. The first groove 212 can be disposed in the optical axis direction. The first groove 212 can include a plurality of grooves. The first groove 212 can include two grooves. The two grooves can be disposed parallel to each other. The first groove 212 can include a first groove that contacts the first ball 810 at two points and a second groove that contacts the first ball 810 at one point. As a modification, both the first groove and the second groove may contact the first ball 810 at two points.

[0092] The first holder 210 can include a second groove 213. The second groove 213 may be a 'second ball receiving groove'. A second ball 820 can be disposed in the second groove 213. The second groove 213 can be in direct contact with the second ball 820. The second groove 213 can be disposed in a direction perpendicular to the optical axis. The second groove 213 can include a plurality of grooves. The second groove 213 can include four grooves. The second groove 213 can include a first groove that contacts the second ball 820 at two points and a second groove that contacts the second ball 820 at one point. As a modification, both the first groove and the second groove may contact the second ball 820 at two points.

[0093] The first holder 210 can include a groove 214. The groove 214 may be a'magnet receiving groove'. The groove 214 can be formed on the outer surface of the first holder 210. A first magnet 520 can be disposed in the groove 214. The groove 214 can be formed in a shape corresponding to the first magnet 520.

[0094] The first holder 210 can include a groove 215. The groove 215 can be formed in a concave shape on the inner surface of the first holder 210. A third holder 410 can be disposed in the groove 215. A first magnet 520 can be disposed on the opposite side of the groove 215.

[0095] The lens driving device 10 can include a second moving part 300. The second moving part 300 may be an 'OIS-x moving part'. The second moving part 300 can be arranged on the fixed part 100. The second moving part 300 can be arranged within the fixed part 100. The second moving part 300 can be arranged on the fixed part 100. The second moving part 300 can be arranged within the first moving part 200. The second moving part 300 can be arranged between the fixed part 100 and the third moving part 400. The second moving part 300 can be arranged between the first moving part 200 and the third moving part 400. The second moving part 300 can be arranged movably. The second moving part 300 can be moved in the x-axis direction perpendicular to the optical axis with respect to the fixed part 100 and the first moving part 200 by the second driving part 600. The second moving part 300 can move during OIS driving.

[0096] The lens driving device 10 can include a second holder 310. The second moving part 300 can include the second holder 310. The second holder 310 may be an 'OIS-x holder'. The second holder 310 may be an 'OIS-x carrier'. The second holder 310 can be arranged within the first holder 210. The second holder 310 can be arranged within the base 110. The second holder 310 can be arranged on the base 110. The second holder 310 can be arranged within the cover 140. The second holder 310 can be arranged between the base 110 and the third holder 410. The second holder 310 can be arranged between the first holder 210 and the third holder 410. The second holder 310 can be arranged movably in the x-axis direction perpendicular to the optical axis. The second holder 310 can include a portion arranged between the first holder 210 and the third holder 410 in the second direction.

[0097] The second holder 310 can include a hole 311. The hole 311 may be a 'third holder avoidance hole'. The hole 311 can be formed in the side plate of the second holder 310. The hole 311 can penetrate the second holder 310 in a direction perpendicular to the optical axis. The hole 311 may be formed as a groove recessed from the upper surface of the second holder 310 or a groove recessed from the lower surface. A part of the third holder 410 can be disposed in the hole 311. A third magnet 720 can be disposed in the hole 311.

[0098] The second holder 310 can include a first groove 312. The first groove 312 may be a'second ball receiving groove'. A second ball 820 can be disposed in the first groove 312. The first groove 312 can be in direct contact with the second ball 820. The first groove 312 can be disposed in a direction perpendicular to the optical axis. The first groove 312 can include a plurality of grooves. The first groove 312 can include four grooves. The first groove 312 can include a first groove that contacts the second ball 820 at two points and a second groove that contacts the second ball 820 at one point. As a modification, both the first groove and the second groove may contact the second ball 820 at two points.

[0099] The second holder 310 can include a second groove 313. The second groove 313 may be a 'third ball receiving groove'. A third ball 830 can be disposed in the second groove 313. The second groove 313 can be in direct contact with the third ball 830. The second groove 313 can be disposed in a direction perpendicular to the optical axis. The second groove 313 can include a plurality of grooves. The second groove 313 can include four grooves. The second groove 313 can include a first groove that contacts the third ball 830 at two points and a second groove that contacts the third ball 830 at one point. As a modification, both the first groove and the second groove may contact the third ball 830 at two points.

[0100] The second holder 310 can include a groove 314. The groove 314 may be a'magnet receiving groove'. The groove 314 can be formed on the outer surface of the second holder 310. A second magnet 620 can be disposed in the groove 314. The groove 314 can be formed in a shape corresponding to the second magnet 620.

[0101] The lens driving device 10 can include a third moving part 400. The third moving part 400 may be an 'OIS-y moving part'. The third moving part 400 can be arranged on the fixed part 100. The third moving part 400 can be arranged within the fixed part 100. The third moving part 400 can be arranged on the fixed part 100. The third moving part 400 can be arranged within the first moving part 200. The third moving part 400 can be arranged within the second moving part 300. The third moving part 400 can be arranged to be movable. The third moving part 400 can be moved in the y-axis direction perpendicular to both the optical axis and the x-axis with respect to the fixed part 100, the first moving part 200, and the second moving part 300 by a third driving part 700. The third moving part 400 can move during OIS driving.

[0102] The lens driving device 10 can include a third holder 410. The third moving part 400 can include the third holder 410. The third holder 410 may be a 'bobbin'. The third holder 410 may be an 'OIS-y holder'. The third holder 410 may be an 'OIS-y carrier'. The third holder 410 can be arranged within the second holder 310. The third holder 410 can be arranged within the first holder 210. The third holder 410 can be arranged within the base 110. The third holder 410 can be arranged on the base 110. The third holder 410 can be arranged within the cover 140. The third holder 410 can be arranged to be movable in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0103] The third holder 410 can include a groove 411. The groove 411 may be a 'third ball receiving groove'. A third ball 830 can be arranged in the groove 411. The groove 411 can be in direct contact with the third ball 830. The groove 411 can be arranged in a direction perpendicular to the optical axis. The groove 411 can include a plurality of grooves. The groove 411 can include four grooves. The groove 411 can include a first groove that contacts the third ball 830 at two points and a second groove that contacts the third ball 830 at one point. As a modification, both the first groove and the second groove may contact the third ball 830 at two points.

[0104] The third holder 410 may include a groove 414. The groove 414 may be a'magnet accommodation groove'. The groove 414 may be formed on the outer surface of the third holder 410. A third magnet 720 may be disposed in the groove 414. The groove 414 may be formed in a shape corresponding to the third magnet 720.

[0105] The lens driving device 10 may include a driving unit. The driving unit can move the moving part relative to the fixed part. The driving unit may include an AF driving unit. The driving unit may include an OIS driving unit. The driving unit may include a coil and a magnet.

[0106] The lens driving device 10 may include a first driving unit 500. The first driving unit 500 may be an 'AF driving unit'. The first driving unit 500 can move the first holder 210 in the optical axis direction. The first driving unit 500 can move the first holder 210 in the optical axis direction via electromagnetic force. The first driving unit 500 may include a coil and a magnet.

[0107] The lens driving device 10 may include a first coil 510. The first driving unit 500 may include the first coil 510. The first coil 510 may be an 'AF coil'. The first coil 510 can interact with the first magnet 520. The first coil 510 can move the first magnet 520 in the optical axis direction. The first coil 510 can move the first magnet 520 in the optical axis direction through the interaction with the first magnet 520. The first coil 510 can face the first magnet 520. The first coil 510 can be opposite to the first magnet 520. The first coil 510 may be disposed at a position corresponding to the first magnet 520. The first coil 510 can overlap the first magnet 520 in a direction perpendicular to the optical axis. The first coil 510 may be disposed on the substrate 120. The first coil 510 may be disposed on the base 110. The first coil 510 may be disposed on the fixed part 100.

[0108] The lens driving device 10 can include a first magnet 520. The first driving unit 500 can include the first magnet 520. The first magnet 520 may be an 'AF magnet'. The first magnet 520 can be arranged on the first holder 210. The first magnet 520 can be arranged on the outer surface of the first holder 210. The first magnet 520 may be fixed to the first holder 210. The first magnet 520 may be coupled to the first holder 210. The first magnet 520 may be adhered to the first holder 210 with an adhesive. The first magnet 520 can be arranged within the cover 140. The first magnet 520 can interact with the first coil 510. The first magnet 520 can interact electromagnetically with the first coil 510. The first magnet 520 can be arranged at a position corresponding to the first coil 510. The first magnet 520 can face the first coil 510. The first magnet 520 can oppose the first coil 510. The first magnet 520 can overlap the first coil 510 in a direction perpendicular to the optical axis.

[0109] The first magnet 520 may be a four-pole magnet. The first magnet 520 can include a four-pole magnetized magnet. The first magnet 520 can include a first magnet part including an N pole and an S pole, and a second magnet part including an N pole and an S pole. The first magnet part and the second magnet part can be arranged in the vertical direction. The first magnet part and the second magnet part can be arranged separately in the vertical direction, and a neutral part can be arranged between the first magnet part and the second magnet part.

[0110] The lens driving device 10 can include a driver IC 530. The first driving unit 500 can include the driver IC 530. The driver IC 530 may be an 'AF driver IC'. The driver IC 530 can be arranged on the substrate 120. The driver IC 530 can include a sensing unit that senses the first magnet 520. The sensing unit can include a Hall element (Hall IC). The sensing unit can include a Hall sensor. The driver IC 530 can be electrically connected to the first coil 510. The driver IC 530 can supply current to the first coil 510. The driver IC 530 can sense the movement of the first magnet 520. The amount of movement or position of the first magnet 520 sensed by the driver IC 530 can be used for feedback of autofocus driving.

[0111] The driver IC 530 can be arranged inside the first coil 510. The driver IC 530 can overlap with the neutral part of the first magnet 520 in a direction perpendicular to the optical axis. As a modification, the driver IC 530 may be arranged outside the first coil 510.

[0112] As a modification, the lens driving device 10 can include a Hall sensor. That is, the lens driving device 10 can include a Hall sensor instead of the driver IC 530.

[0113] The lens driving device 10 can include a second driving unit 600. The second driving unit 600 may be an 'OIS-x driving unit'. The second driving unit 600 can move the second holder 310 in a first direction perpendicular to the optical axis. The second driving unit 600 can move the second holder 310 in a first direction perpendicular to the optical axis via electromagnetic force. The second driving unit 600 can include a coil and a magnet.

[0114] The lens driving device 10 can include a second coil 610. The second driving unit 600 can include the second coil 610. The second coil 610 may be an 'OIS-x coil'. The second coil 610 can interact with the second magnet 620. The second coil 610 can move the second magnet 620 in the x-axis direction perpendicular to the optical axis. The second coil 610 can move the second magnet 620 in the x-axis direction through interaction with the second magnet 620. The second coil 610 can face the second magnet 620. The second coil 610 can be opposed to the second magnet 620. The second coil 610 can be arranged at a position corresponding to the second magnet 620. The second coil 610 can overlap the second magnet 620 in a direction perpendicular to the optical axis. The second coil 610 can be arranged on the substrate 120. The second coil 610 can be arranged on the base 110. The second coil 610 can be arranged on the fixing part 100.

[0115] The lens driving device 10 can include a second magnet 620. The second driving unit 600 can include the second magnet 620. The second magnet 620 may be an 'OIS-x magnet'. The second magnet 620 can be arranged on the second holder 310. The second magnet 620 can be arranged on the outer surface of the second holder 310. The second magnet 620 may be fixed to the second holder 310. The second magnet 620 may be coupled to the second holder 310. The second magnet 620 may be adhered to the second holder 310 with an adhesive. The second magnet 620 can be arranged in the cover 140. The second magnet 620 can interact with the second coil 610. The second magnet 620 can have an electromagnetic interaction with the second coil 610. The second magnet 620 can be arranged at a position corresponding to the second coil 610. The second magnet 620 can face the second coil 610. The second magnet 620 can be opposed to the second coil 610. The second magnet 620 can overlap the second coil 610 in a direction perpendicular to the optical axis.

[0116] The second magnet 620 can be disposed in the hole 211 of the first holder 210. The second magnet 620 can overlap the first holder 210 in the first direction. The second magnet 620 can overlap the first holder 210 in the optical axis direction.

[0117] The second magnet 610 may be a four-pole magnet. The second magnet 620 can include a four-pole magnetized magnet. The second magnet 620 can include a first magnet portion including an N pole and an S pole, and a second magnet portion including an N pole and an S pole. The first magnet portion and the second magnet portion can be disposed horizontally. The first magnet portion and the second magnet portion can be spaced apart horizontally, and a neutral portion can be disposed between the first magnet portion and the second magnet portion.

[0118] In this embodiment, even when the second magnet 620 moves due to the interaction between the second coil 610 and the second magnet 620, the distance between the second coil 610 and the second magnet 620 can be maintained constant.

[0119] The lens driving device 10 can include a sensor 630. The second driving unit 600 can include a sensor 630. The sensor 630 may be an 'OIS-x sensor'. The sensor 630 can be disposed on the substrate 120. The sensor 630 can include a Hall sensor. The sensor 630 can sense the second magnet 620. The sensor 630 can sense the magnetic force of the second magnet 620. The sensor 630 can be disposed in the second coil 610. The sensor 630 can overlap the second coil 610 in the optical axis direction. The sensor 630 can face the second magnet 620. The sensor 630 can be disposed at a position corresponding to the second magnet 620. The sensor 630 can sense the movement of the second magnet 620. The amount of movement or the position of the second magnet 620 sensed by the sensor 630 can be used for feedback of the shake correction drive in the x-axis direction.

[0120] The lens driving device 10 can include a third driving unit 700. The third driving unit 700 may be an 'OIS-y driving unit'. The third driving unit 700 can move the third holder 410 in a second direction perpendicular to both the optical axis and the first direction. The third driving unit 700 can move the third holder 410 in a second direction perpendicular to both the optical axis and the first direction via electromagnetic force. The third driving unit 700 can include a coil and a magnet.

[0121] The lens driving device 10 can include a third coil 710. The third driving unit 700 can include the third coil 710. The third coil 710 may be an 'OIS-y coil'. The third coil 710 can interact with a third magnet 720. The third coil 710 can be arranged on the opposite side of the first coil 510 with respect to the optical axis.

[0122] The third coil 710 can move the third magnet 720 in the y-axis direction perpendicular to both the optical axis and the x-axis. The third coil 710 can move the third magnet 720 in the y-axis direction through the interaction with the third magnet 720. The third coil 710 can face the third magnet 720. The third coil 710 can be arranged at a position corresponding to the third magnet 720. The third coil 710 can overlap the third magnet 720 in a direction perpendicular to the optical axis. The third coil 710 can be arranged on the substrate 120. The third coil 710 can be arranged on the base 110. The third coil 710 can be arranged on the fixing part 100.

[0123] The lens driving device 10 can include a third magnet 720. The third driving unit 700 can include the third magnet 720. The third magnet 720 may be an 'OIS-y magnet'. The third magnet 720 can be disposed in the third holder 410. The third magnet 720 can be disposed on the outer surface of the third holder 410. The third magnet 720 may be fixed to the third holder 410. The third magnet 720 may be coupled to the third holder 410. The third magnet 720 may be adhered to the third holder 410 with an adhesive. The third magnet 720 can be disposed within the cover 140. The third magnet 720 can interact with the third coil 710. The third magnet 720 can have an electromagnetic interaction with the third coil 710. The third magnet 720 can be disposed at a position corresponding to the third coil 710. The third magnet 720 can face the third coil 710. The third magnet 720 can oppose the third coil 710. The third magnet 720 can overlap the third coil 710 in a direction perpendicular to the optical axis.

[0124] The third magnet 720 can be disposed in the hole 311 of the second holder 310. The third magnet 720 can overlap the second holder 310 in the second direction. The third magnet 720 can overlap the second holder 310 in the optical axis direction.

[0125] The third magnet 720 may be a four-pole magnet. The third magnet 720 can include a four-pole magnetized magnet. The third magnet 720 can include a first magnet part including an N pole and an S pole, and a second magnet part including an N pole and an S pole. The first magnet part and the second magnet part can be disposed horizontally. The first magnet part and the second magnet part can be disposed horizontally and spaced apart, and a neutral part can be disposed between the first magnet part and the second magnet part.

[0126] In this embodiment, even when the third magnet 720 moves due to the interaction between the third coil 710 and the third magnet 720, the distance between the third coil 710 and the third magnet 720 can be maintained constant.

[0127] The lens driving device 10 can include a sensor 730. The third driving unit 700 can include a sensor 730. The sensor 730 may be an 'OIS-y sensor'. The sensor 730 can be disposed on the substrate 120. The sensor 730 can include a Hall sensor. The sensor 730 can sense the third magnet 720. The sensor 730 can sense the magnetic force of the third magnet 720. The sensor 730 can be disposed within the third coil 710. The sensor 730 can overlap with the third coil 710 in the optical axis direction. The sensor 730 can face the third magnet 720. The sensor 730 can be disposed at a position corresponding to the third magnet 720. The sensor 730 can sense the movement of the third magnet 720. The amount of movement or the position of the third magnet 720 sensed by the sensor 730 can be used for feedback of the shake correction drive in the y-axis direction.

[0128] The lens driving device 10 can include a guide member. The guide member can include a ball. The guide member can include a pin. The guide member can include a cylindrical member. The guide member can guide the movement of the moving part with respect to the fixed part 100 in a specific direction.

[0129] The lens driving device 10 can include the first ball 810. The first ball 810 may be an 'AF guide ball'. The first ball 810 can guide the movement of the first holder 210 relative to the base 110 in the optical axis direction. The first ball 810 can be disposed between the base 110 and the first holder 210. The first ball 810 can be disposed between the base 110 and the first holder 210 in the first direction. The first ball 810 can be disposed in the groove 113 of the base 110. The first ball 810 can be disposed in the first groove 212 of the first holder 210. The first ball 810 can include a first-1 ball that contacts the base 110 and the first holder 210 at four points, and a first-2 ball that contacts the base 110 and the first holder 210 at three points. The first ball 810 can be spherical. The first ball 810 can be formed of metal. Grease can be applied to the surface of the first ball 810.

[0130] The first ball 810 can include a plurality of balls. The first ball 810 can include six balls. Three first balls 810 can be disposed on one side of the first magnet 520, and the remaining three first balls 810 can be disposed on the other side of the first magnet 520.

[0131] The lens driving device 10 can include a second ball 820. The second ball 820 may be an 'OIS-x guide ball'. The second ball 820 can guide the movement of the second holder 310 relative to the first holder 210 in the x-axis direction. The second ball 820 can be disposed between the first holder 210 and the second holder 310. The second ball 820 can be disposed between the first holder 210 and the second holder 310 in the second direction. The entire region from the lower end to the upper end of the second ball 820 can overlap both the first holder 210 and the second holder 310 in the second direction. The entire region of the second ball 820 can overlap the first holder 210 and the second holder 310 in the second direction. The second ball 820 can be disposed between the inner surface of the first holder 210 and the outer surface of the second holder 310. When viewed from the outside of the second holder 310, the second ball 820 can overlap the second magnet 620 in the horizontal direction.

[0132] The second ball 820 can be disposed in the second groove 213 of the first holder 210. The second ball 820 can be disposed in the first groove 312 of the second holder 310. The second ball 820 can include a first-1 ball that contacts the first holder 210 and the second holder 310 at four points, and a first-2 ball that contacts the first holder 210 and the second holder 310 at three points. The second ball 820 can be spherical. The second ball 820 can be formed of metal. Grease can be applied to the surface of the second ball 820.

[0133] The second ball 820 can include a plurality of balls. The second ball 820 can include four balls. Two second balls 820 can be disposed on one side of the second magnet 620, and the remaining two second balls 820 can be disposed on the other side of the second magnet 620.

[0134] The lens driving device 10 can include a third ball 830. The third ball 830 may be an 'OIS-y guide ball'. The third ball 830 can guide the movement of the third holder 410 with respect to the second holder 310 in the y-axis direction. The third ball 830 can be disposed between the second holder 310 and the third holder 410. The third ball 830 can be disposed between the second holder 310 and the third holder 410 in a first direction. The entire region from the lower end to the upper end of the third ball 830 can overlap both the second holder 310 and the third holder 410 in the first direction. The third ball 830 can be disposed between the inner surface of the second holder 310 and the outer surface of the third holder 410. When viewed from the outside of the third holder 410, the third ball 830 can overlap the third magnet 720 in the horizontal direction. Here, the horizontal direction can be any direction perpendicular to the optical axis. When viewed from above, at least a part of the third ball 830 can overlap the third magnet 720 in a second direction.

[0135] A part of the third ball 830 can overlap the second holder 310 in the first direction. Another part of the third ball 830 can overlap the third holder 410 in the first direction. A part of the third ball 830 can overlap the upper side of the second holder 310 in the first direction. Another part of the third ball 830 can overlap the upper side of the third holder 410 in the first direction. A part of the third ball 830 can overlap the lower side of the second holder 310 in the first direction. Another part of the third ball 830 can overlap the lower side of the third holder 410 in the first direction.

[0136] The third ball 830 can be disposed in the second groove 313 of the second holder 310. The third ball 830 can be disposed in the groove 411 of the third holder 410. The third ball 830 can include a first-1 ball that contacts the second holder 310 and the third holder 410 at four points, and a first-2 ball that contacts the second holder 310 and the third holder 410 at three points. The third ball 830 can be spherical. The third ball 830 can be formed of metal. Grease can be applied to the surface of the third ball 830.

[0137] The third ball 830 can include a plurality of balls. The third ball 830 can include four balls. Two third balls 830 can be arranged on one side of the third magnet 630, and the remaining two third balls 830 can be arranged on the other side of the third magnet 630.

[0138]

[0139] Hereinafter, the auto focus (AF) drive of the lens driving device according to this embodiment will be described with reference to the drawings.

[0140] FIGS. 18 to 20 are diagrams for explaining the auto focus drive of the lens driving device according to this embodiment. FIG. 18 is a cross-sectional view showing the state of the moving part in the initial state where no current is applied to the first coil. FIG. 19 is a cross-sectional view showing the state where a forward current is applied to the first coil and the moving part moves upward in the optical axis direction. FIG. 20 is a cross-sectional view showing the state where a reverse current is applied to the first coil and the moving part moves downward in the optical axis direction.

[0141] The moving part can be arranged at a position separated from both the upper plate 141 of the cover 140 and the base 110 in the initial position where no current is applied to the first coil 510. At this time, the moving part can be the first moving part 200. Also, the moving part can include the first to third moving parts 200, 300, 400.

[0142] When a forward current is applied to the first coil 510, due to the electromagnetic interaction between the first coil 510 and the first magnet 520, the first magnet 520 can move upward in the optical axis direction (see A in FIG. 19). At this time, together with the first magnet 520, the first holder 210 can move upward in the optical axis direction. Further, together with the first holder 210, the second holder 310, the third holder 410, and the lens can move upward in the optical axis direction. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0143] When a reverse current is applied to the first coil 510, due to the electromagnetic interaction between the first coil 510 and the first magnet 520, the first magnet 520 can move downward in the optical axis direction (see B in FIG. 20). At this time, together with the first magnet 520, the first holder 210 can move downward in the optical axis direction. Further, together with the first holder 210, the second holder 310, the third holder 410, and the lens can move downward in the optical axis direction. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0144] On the other hand, during the movement process of the first magnet 520, the sensing part of the driver IC 530 can sense the magnetic field strength of the first magnet 520 and sense the movement amount and position of the first magnet 520. The movement amount and position of the first magnet 520 sensed by the driver IC 530 can be used for autofocus feedback control.

[0145]

[0146] Hereinafter, the shake correction (OIS, optical image stabilization) drive of the lens driving device according to this embodiment will be described with reference to the drawings.

[0147] Figs. 21 to 23 are diagrams for explaining the shake correction drive of the lens driving device according to this embodiment. Fig. 21 is a cross-sectional view showing the state of the moving part in the initial state where no current is applied to the second coil and the third coil. Fig. 22 is a cross-sectional view showing the state where current is applied to the second coil and the second moving part and the third moving part move in the x-axis direction perpendicular to the optical axis. Fig. 23 is a cross-sectional view showing the state where current is applied to the third coil and the third moving part moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0148] As shown in Fig. 21, the moving part can be arranged at the initial position where no current is applied to the second coil 610 and the third coil 710. At this time, the moving part can be the second moving part 300 and the third moving part 400. Also, the moving part can include the first to third moving parts 200, 300, 400.

[0149] When current is applied to the second coil 610, due to the electromagnetic interaction between the second coil 610 and the second magnet 620, the second magnet 620 can move in the x-axis direction perpendicular to the optical axis (see A in Fig. 22). At this time, together with the second magnet 620, the second holder 310 can move in the x-axis direction. Further, together with the second holder 310, the third holder 410 and the lens can move in the x-axis direction. More specifically, when a forward current is applied to the second coil 610, the second magnet 620, the second holder 310, the third holder 410 and the lens can move in one direction on the x-axis. Also, when a reverse current is applied to the second coil 610, the second magnet 620, the second holder 310, the third holder 410 and the lens can move in the other direction on the x-axis.

[0150] When a current is applied to the third coil 710, due to the electromagnetic interaction between the third coil 710 and the third magnet 720, the third magnet 720 can move in the y-axis direction perpendicular to the optical axis (see B in FIG. 23). At this time, together with the third magnet 720, the third holder 410 can move in the y-axis direction. Further, together with the third holder 410, the lens can move in the y-axis direction. More specifically, when a forward current is applied to the third coil 710, the third magnet 720, the third holder 410, and the lens can move in one direction on the y-axis. Also, when a reverse current is applied to the third coil 710, the third magnet 720, the third holder 410, and the lens can move in the other direction on the y-axis.

[0151] On the other hand, the sensor 630 can sense the intensity of the magnetic field of the second magnet 620 and sense the amount of movement and position of the second magnet 620. The amount of movement and position of the second magnet 620 sensed by the sensor 630 can be used for shake correction feedback control in the x-axis direction. The sensor 730 can sense the intensity of the magnetic field of the third magnet 720 and sense the amount of movement and position of the third magnet 720. The amount of movement and position of the third magnet 720 sensed by the sensor 730 can be used for shake correction feedback control in the y-axis direction.

[0152]

[0153] Hereinafter, the camera device according to this embodiment will be described with reference to the drawings.

[0154] FIG. 24 is an exploded perspective view of the camera device according to this embodiment.

[0155] The camera device 10A can include a camera module.

[0156] The camera device 10A can include a lens module 20. The lens module 20 can include at least one lens. The lens can be disposed at a position corresponding to the image sensor 60. The lens module 20 can include a lens and a barrel. The lens module 20 can be coupled to the holder 210 of the lens driving device 10. The lens module 20 may be coupled to the holder 210 by screwing and / or an adhesive. The lens module 20 can move integrally with the holder 210.

[0157] The camera device 10A can include a filter 30. The filter 30 can serve to block light in a specific frequency band in the light passing through the lens module 20 from entering the image sensor 60. The filter 30 can be disposed parallel to the x-y plane. The filter 30 can be disposed between the lens module 20 and the image sensor 60. The filter 30 can be disposed on the sensor base 40. As a modification, the filter 30 may be disposed on the base 110. The filter 30 can include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0158] The camera device 10A can include a sensor base 40. The sensor base 40 can be disposed between the lens driving device 10 and the printed circuit board 50. The sensor base 40 can include a protrusion 41 on which the filter 30 is disposed. An opening can be formed in the portion of the sensor base 40 where the filter 30 is disposed so that the light passing through the filter 30 can enter the image sensor 60. The adhesive member can couple or adhere the base 310 of the lens driving device 10 to the sensor base 40. The adhesive member can additionally serve to prevent foreign matter from flowing into the lens driving device 10. The adhesive member can include any one or more of epoxy, a thermosetting adhesive, and an ultraviolet curable adhesive.

[0159] The camera device 10A can include a printed circuit board (PCB). The printed circuit board 50 may be a substrate or a circuit board. The lens driving device 10 may be arranged on the printed circuit board 50. A sensor base 40 may be arranged between the printed circuit board 50 and the lens driving device 10. The printed circuit board 50 can be electrically connected to the lens driving device 10. An image sensor 60 may be arranged on the printed circuit board 50. The printed circuit board 50 may be provided with various circuits, elements, control units, etc. for converting the image formed on the image sensor 60 into an electrical signal and transmitting it to an external device.

[0160] The camera device 10A can include an image sensor 60. The image sensor 60 may be configured such that light passing through the lens and the filter 30 is incident and an image is formed. The image sensor 60 can be mounted on the printed circuit board 50. The image sensor 60 can be electrically connected to the printed circuit board 50. As an example, the image sensor 60 may be coupled to the printed circuit board 50 by surface mounting technology (SMT). As another example, the image sensor 60 may be coupled to the printed circuit board 50 by flip chip technology. The image sensor 60 can be arranged such that its optical axis coincides with that of the lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens can be aligned. The image sensor 60 can convert the light irradiated on the effective image area of the image sensor 60 into an electrical signal. The image sensor 60 may be any one of a CCD (charge coupled device), MOS (metal oxide semi-conductor), CPD, and CID.

[0161] The camera device 10A can include a motion sensor 70. The motion sensor 70 can be mounted on the printed circuit board 50. The motion sensor 70 can be electrically connected to the control unit 80 via a circuit pattern provided on the printed circuit board 50. The motion sensor 70 can output rotational angular velocity information due to the movement of the camera device 10A. The motion sensor 70 can include a two-axis or three-axis gyro sensor, or an angular velocity sensor.

[0162] The camera device 10A can include a control unit 80. The control unit 80 can be arranged on the printed circuit board 50. The control unit 80 can be electrically connected to the coil 330 of the lens driving device 10. The control unit 80 can individually control the direction, intensity, amplitude, etc. of the current supplied to the coil 330. The control unit 80 can control the lens driving device 10 to perform an autofocus function and / or an anti-shake function. Further, the control unit 80 can perform autofocus feedback control and / or anti-shake feedback control on the lens driving device 10.

[0163] The camera device 10A can include a connector 90. The connector 90 can be electrically connected to the printed circuit board 50. The connector 90 can include a port for electrically connecting to an external device.

[0164]

[0165] Hereinafter, the optical device according to this embodiment will be described with reference to the drawings.

[0166] FIG. 25 is a perspective view of the optical device according to this embodiment, and FIG. 26 is a perspective view of the optical device according to a modified example.

[0167] The optical device 1 can include any one or more of a mobile phone, a mobile terminal device, a mobile terminal, a smart phone, a smart pad, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal device, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and a navigation device. The optical device 1 can include any device for taking videos or photos.

[0168] The optical device 1 can include a main body 20. The optical device 1 can include a camera device 10A. The camera device 10A can be arranged on the main body 20. The camera device 10A can photograph a subject. The optical device 1 can include a display. The display can be arranged on the main body 20. The display can output any one or more of the video and image photographed by the camera device 10A. The display can be arranged on the first surface of the main body 20. The camera device 10A can be arranged on any one or more of the first surface of the main body 20 and the second surface opposite to the first surface. As shown in FIG. 22, in the camera device 10A, triple cameras can be arranged in the vertical direction. As shown in FIG. 23, in the camera device 10A-1, triple cameras can be arranged in the horizontal direction.

[0169]

[0170] As described above, the embodiments of the present invention have been described with reference to the accompanying drawings. However, those of ordinary skill in the technical field to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea and essential features. Therefore, it should be understood that the embodiments described above are illustrative in all aspects and not restrictive.

Claims

1. A base, a first holder disposed within the base, a second holder disposed within the first holder, a bobbin disposed within the second holder, a first driving unit that moves the first holder in the z-axis direction along the optical axis, a second driving unit that moves the second holder in the y-axis direction perpendicular to the z-axis direction, a third driving unit that moves the bobbin in the x-axis direction perpendicular to the z-axis direction and the y-axis direction, wherein the first to third driving units each include a coil and a magnet, the first driving unit includes a coil coupled to one of the base and the first holder, and a magnet coupled to the other of the base and the first holder, the second driving unit includes a coil coupled to one of the base and the second holder, and a magnet coupled to the other of the base and the second holder, the third driving unit includes a coil coupled to one of the base and the bobbin, and a magnet coupled to the other of the base and the bobbin, a lens driving device.

2. The lens driving device according to claim 1, wherein the first holder and the second holder are separated.

3. The lens driving device according to claim 1, wherein a first side wall of the first holder and a first side wall of the second holder overlap in the x-axis direction and are disposed on one side of the bobbin.

4. The lens driving device according to claim 1, including a first ball disposed between a second side wall of the first holder and a second side wall of the base.

5. The lens driving device according to claim 1, including a second ball disposed between a first side wall of the first holder and a first side wall of the second holder.

6. The lens driving device according to claim 1, including a third ball disposed between a second side wall of the second holder and the bobbin.

7. The lens driving device according to claim 6, wherein the third ball is disposed between the second holder and the bobbin in the x-axis direction.

8. The lens driving device according to claim 5, wherein the second ball is disposed between the first holder and the second holder in the y-axis direction.

9. The first holder includes a hole, the magnet of the second driving unit is disposed in the hole of the first holder and overlaps the first holder in the x-axis direction, the lens driving device according to claim 1.

10. A base, A first holder disposed within the base; A second holder disposed within the first holder; A third holder disposed within the second holder; A first driving unit configured to move the first holder in a direction along the optical axis; A second driving unit configured to move the second holder in a first direction perpendicular to the optical axis; A third driving unit configured to move the third holder in a second direction perpendicular to both the optical axis and the first direction; A first ball disposed between the base and the first holder; A second ball disposed between the first holder and the second holder; A third ball disposed between the second holder and the third holder, wherein the third ball is disposed between the second holder and the third holder in the first direction, the lens driving device.

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