KR20170111035A - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

This embodiment includes a housing; A bobbin located inside the housing; A first driver positioned in the bobbin; A second driver positioned in the housing and facing the first driver; A support member coupled to the housing and the bobbin; And a damper applied to the support member, wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion, And a lens driving device disposed in the connection portion.

Description

[0001] LENS DRIVING DEVICE, CAMERA MODULE, AND OPTICAL APPARATUS [0002]

The present embodiment relates to a lens driving device, a camera module, and an optical device.

The following description provides background information for the present embodiment and does not describe the prior art.

As the spread of various portable terminals is widely popularized and the wireless Internet service is commercialized, the demands of consumers related to portable terminals are diversified, and various kinds of additional devices are installed in portable terminals.

Among them, there is a camera module which photographs a subject as a photograph or a moving picture. Meanwhile, in recent years, a camera module having an auto focus function has been used. Furthermore, a camera module having an autofocus feedback function is being developed.

However, in the conventional camera module having the autofocus feedback function, if an impact corresponding to the resonance frequency of the elastic member that joins the bobbin and the housing is applied, the elastic member resonates.

In order to solve the above-described problem, it is desirable to provide a lens driving apparatus which detects the position of a lens and performs feedback control of autofocus.

Further, it is an object of the present invention to provide a structure in which a damping force can be easily designed and controlled in a closed-loop type lens driving apparatus.

Furthermore, it is desirable to provide a camera module and an optical device including the lens driving device.

The lens driving apparatus according to the present embodiment includes: a housing; A bobbin located inside the housing; A first driver positioned in the bobbin; A second driver positioned in the housing and facing the first driver; A support member coupled to the housing and the bobbin; And a damper applied to the support member, wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion, And may be located at the connection portion.

The damper may include a first damper integrally applied to the connection portion and the inner portion.

Wherein the connection portion includes an outer extension extending from the outer portion, an inner extension extending from the inner portion, and a connection extension connecting the outer extension and the inner extension, And a second extending portion extending obliquely from the first extending portion, wherein the inner side includes first and second engaging portions which are engaged with the bobbin and are spaced apart from each other, and a body connecting the first and second engaging portions, And a protrusion extending outwardly from the body and at least a part of which is located between the connection extensions.

Wherein the connection extension portion further includes a third extension portion extending obliquely from the second extension portion and a fourth extension portion extending obliquely from the third extension portion, .

The first damper may be applied to at least one of a first position that is integrally applied to the first extending portion and the protruding portion, and a second position that is integrally applied to the second extending portion and the protruding portion.

The first damper may include a third position integrally applied to the outer extension portion and the body portion, a fourth position integrally applied to the inner extension portion and the body portion, and a fourth position integrally formed with the connection extension portion and the body portion, And the fifth position, which is integrally applied.

The damper may include a second damper integrally applied to the connection portion and the outer portion.

The second damper may be applied to each of a plurality of spaced apart locations.

Wherein the connection portion includes an outer extension extending from the outer portion, an inner extension extending from the inner portion, and a connection extension connecting the outer extension and the inner extension, And a second extension extending obliquely from the first extension, and the damper may include a third damper integrally applied to the first extension and the second extension.

The lens driving apparatus may further include: a sensing magnet disposed on one side of the bobbin; A compensating magnet located on the other side of the bobbin; And a sensor unit disposed in the housing and sensing the sensing magnet.

The support member includes an upper support member coupled to an upper portion of the housing and the upper portion of the bobbin, and a lower support member coupled to a lower portion of the housing and a lower portion of the bobbin. .

The camera module according to the present embodiment includes: a housing; A bobbin located inside the housing; A first driver positioned in the bobbin; A second driver positioned in the housing and facing the first driver; A support member coupled to the housing and the bobbin; And a damper applied to the support member, wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion, And may be located at the connection portion.

The optical device according to the present embodiment includes: a housing; A bobbin located inside the housing; A first driver positioned in the bobbin; A second driver positioned in the housing and facing the first driver; A support member coupled to the housing and the bobbin; And a damper applied to the support member, wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion, And may be located at the connection portion.

With the present invention, it is easy to adjust the damping force in design. In more detail, the damping gel application position can be set according to the design damping force.

1 is a perspective view of a lens driving apparatus according to the present embodiment.
2 is an exploded perspective view of the lens driving apparatus according to the present embodiment.
3 is a bottom view showing a part of the lens driving apparatus according to the present embodiment.
4 is a bottom view showing a part of a lens driving apparatus according to a modification.
5 is a perspective view of the housing of the lens driving apparatus according to the present embodiment.
6 is a perspective view showing a part of the lens driving apparatus according to the present embodiment.
7 is a bottom perspective view showing a part of the lens driving apparatus according to the present embodiment.
8 is a cross-sectional view taken along line AA of FIG.
9 is a plan view showing a part of the lens driving apparatus according to the present embodiment.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to the other component, It is to be understood that another element may be "connected "," coupled ", or "connected" between elements.

The "optical axis direction" used below is defined as the optical axis direction of the lens module in a state of being coupled to the lens driving device. On the other hand, the " optical axis direction " can be used in combination with the up-and-down direction, the z-

The "autofocus function" used below is to focus the subject by adjusting the distance from the image sensor by moving the lens module in the direction of the optical axis according to the distance of the subject so that a clear image of the subject can be obtained with the image sensor Function. On the other hand, "autofocus" can be mixed with "AF (Auto Focus)".

Hereinafter, any one of the driving coil part 220 and the driving magnet part 320 may be referred to as a 'first driving part' and the other as a 'second driving part'.

Hereinafter, any one of the driving magnet unit 320, the sensing magnet unit 710, and the compensation magnet unit 720 will be referred to as a "first magnet unit", another one as a "second magnet unit"Quot; third magnet portion ".

Hereinafter, the configuration of the optical device according to the present embodiment will be described.

The optical apparatus according to the present embodiment may be applied to a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants) ), Navigation, and the like, but is not limited thereto, and any device for capturing an image or a photograph is possible.

The optical apparatus according to the present embodiment includes a main body (not shown), a display unit (not shown) disposed on one side of the main body and displaying information, And a camera (not shown).

Hereinafter, the configuration of the camera module according to the present embodiment will be described.

The camera module may further include a lens driving device 10, a lens module (not shown), an infrared filter (not shown), a printed circuit board (not shown), an image sensor (not shown) have.

The lens module may include one or more lenses (not shown). The lens module may include a lens and a lens barrel (not shown). However, one configuration of the lens module is not limited to the lens barrel, and any structure can be used as long as it can support one or more lenses. The lens module may be coupled to the lens driving device 10 and move together with a part of the lens driving device 10. [ The lens module may be coupled to the inside of the lens driving apparatus 10. [ The lens module can be screwed with the lens driving device 10. [ The lens module can be coupled to the lens driving device 10 by an adhesive (not shown). On the other hand, the light having passed through the lens module can be irradiated to the image sensor.

The infrared filter may be located in the through hole 510 of the base 500. Alternatively, the infrared filter may be located in a holder member (not shown) provided separately from the base 500. The infrared filter can prevent the light of the infrared region from being incident on the image sensor. The infrared filter may include an infrared absorption filter (Blue filter). The infrared filter may include an IR cut filter. The infrared filter may be located between the lens module and the image sensor. The infrared filter may be formed of a film material or a glass material. The infrared filter may be formed by coating an infrared ray blocking coating material on a plate-shaped optical filter such as a cover glass for protecting an image pickup surface and a cover glass. However, the present invention is not limited thereto.

The printed circuit board can support the lens driving device 10. An image sensor may be mounted on the printed circuit board. As an example, an image sensor may be disposed on an upper surface of a printed circuit board, and a sensor holder (not shown) may be disposed on an upper surface of the printed circuit board. On the upper side of the sensor holder, the lens driving device 10 is located. Alternatively, the lens driving device 10 may be located outside the upper surface of the printed circuit board, and the image sensor may be positioned inside the upper surface of the printed circuit board. With this structure, the light passing through the lens module housed inside the lens driving device 10 can be irradiated to the image sensor mounted on the printed circuit board. The printed circuit board can supply power to the lens driving apparatus 10. [ On the other hand, a control unit for controlling the lens driving apparatus 10 may be disposed on the printed circuit board.

The image sensor may be mounted on a printed circuit board. The image sensor may be positioned such that the optical axis and the lens module are aligned. Thereby, the image sensor can acquire light passing through the lens module. The image sensor can output the irradiated light as an image. The image sensor can be, for example, a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD and a CID. However, the type of image sensor is not limited thereto.

The control unit may be mounted on a printed circuit board. The control unit can control the direction, intensity, and amplitude of the current supplied to each of the components constituting the lens driving apparatus 10. [ The control unit controls the lens driving unit 10 to perform the autofocus function of the camera module. That is, the control unit can control the lens driving unit 10 to move the lens module in the optical axis direction. Furthermore, the control unit may perform feedback control of the autofocus function. More specifically, the control unit can receive the position of the lens module sensed by the sensing unit 700 and control the power or current applied to the driving coil unit 220, thereby providing a more precise autofocus function.

Hereinafter, the configuration of the lens driving apparatus according to the present embodiment will be described with reference to the drawings.

FIG. 1 is a perspective view of the lens driving apparatus according to the present embodiment, FIG. 2 is an exploded perspective view of the lens driving apparatus according to the present embodiment, FIG. 3 is a bottom view showing a part of the lens driving apparatus according to the present embodiment 5 is a perspective view of the housing of the lens driving apparatus according to the present embodiment, and FIG. 6 is a sectional view of a portion of the lens driving apparatus according to the present embodiment FIG. 7 is a bottom perspective view showing a part of the lens driving apparatus according to the present embodiment, FIG. 8 is a sectional view seen from AA in FIG. 1, and FIG. 9 is a perspective view showing a lens driving apparatus according to the present embodiment Fig.

1 to 9, a lens driving apparatus 10 according to the present embodiment includes a cover member 100, a mover 200, a stator 300, a base 500, a support member 600, And a sensing unit 700. However, in the lens driving apparatus 10 according to the present embodiment, any one of the cover member 100, the mover 200, the housing 300, the base 500, the supporting member 600, and the sensing unit 700 The above can be omitted. In particular, the sensing unit 700 can be omitted in the configuration for the autofocus feedback function.

The cover member 100 can form an appearance of the lens driving apparatus 10. [ The cover member 100 may be in the form of a hexahedron having an open bottom. However, the present invention is not limited thereto.

The cover member 100 may be formed of, for example, a metal material. More specifically, the cover member 100 may be formed of a metal plate. In this case, the cover member 100 may block electromagnetic interference (EMI). Because of this feature of the cover member 100, the cover member 100 can be referred to as an EMI shield can. The cover member 100 can prevent the airflow generated from the outside of the lens driving apparatus 10 from flowing into the inside of the cover member 100. In addition, the cover member 100 can prevent the radio waves generated inside the cover member 100 from being emitted to the outside of the cover member 100. However, the material of the cover member 100 is not limited thereto.

The cover member 100 may include an upper plate 101 and a side plate 102. The cover member 100 may include an upper plate 101 and a side plate 102 extending downward from the outer side of the upper plate 101. [ The lower end of the side plate 102 of the cover member 100 can be mounted on the base 500. [ The cover member 100 may be mounted on the base 500 in such a manner that its inner surface is in close contact with a part or all of the side surface of the base 500. The mover 200, the stator 300, and the supporting member 600 may be positioned in the inner space formed by the cover member 100 and the base 500. With such a structure, the cover member 100 can protect the internal components from an external impact and have a function of preventing external contaminants from penetrating. However, the lower end of the side plate 102 of the cover member 100 may be directly coupled to the printed circuit board located below the base 500. [

The cover member 100 may include an opening 110 formed in the top plate 101 to expose the lens module. The opening 110 may be formed in a shape corresponding to the lens module. The size of the opening 110 may be larger than the diameter of the lens module so that the lens module can be assembled through the opening 110. On the other hand, the light introduced through the opening 110 can pass through the lens module. At this time, the light passing through the lens module can be acquired as an image from the image sensor.

The movable element 200 may include a bobbin 210 and a driving coil part 220. The mover 200 may include a bobbin 210 to which the lens module is coupled. The mover 200 may include a bobbin 210 positioned inside the housing 310. The movable element 200 may include a driving coil part 220 located on the bobbin 210. [ The mover 200 may include a driving coil part 220 opposed to the driving magnet part 320. The mover 200 can move integrally with the lens module through an electromagnetic interaction with the stator 300.

The bobbin 210 may be located inside the housing 310. In the bobbin 210, the driving coil part 220 can be located. To the bobbin 210, a support member 600 may be coupled. An upper support member 610 may be coupled to the upper portion of the bobbin 210. A lower support member 620 may be coupled to a lower portion of the bobbin 210. In the bobbin 210, the sensing magnet unit 710 may be positioned. The sensing magnet 710 may be positioned on one side of the bobbin 210 and the compensating magnet 720 may be on the other side of the bobbin 210. The bobbin 210 may be coupled to a lens module. The outer circumferential surface of the lens module may be coupled to the inner circumferential surface of the bobbin 210. The bobbin 210 can move in the direction of the optical axis with respect to the housing 310.

The bobbin 210 may include a lens coupling portion 211, a coil portion coupling portion 212 and an upper coupling portion 213 and a lower coupling portion (not shown).

The bobbin 210 may include a lens coupling portion 211 formed inside. The lens coupling unit 211 may be coupled with a lens module. A screw thread having a shape corresponding to the thread formed on the outer circumferential surface of the lens module may be formed on the inner circumferential surface of the lens coupling portion 211. [ That is, the lens coupling portion 211 can be screwed to the lens module. Between the lens module and the bobbin 210, an adhesive may be interposed. At this time, the adhesive may be an ultraviolet (UV) or an epoxy which is cured by heat. That is, the lens module and the bobbin 210 may be bonded by ultraviolet curing epoxy and / or thermosetting epoxy.

The bobbin 210 may include a coil part coupling part 212 in which the driving coil part 220 is wound or mounted. The coil part coupling part 212 may be integrally formed with the outer surface of the bobbin 210. [ In addition, the coil-portion coupling portions 212 may be formed continuously along the outer surface of the bobbin 210 or spaced apart from each other at a predetermined interval. The coil part coupling part 212 may be formed such that a part of the outer surface of the bobbin 210 corresponds to the shape of the driving coil part 220. [ At this time, the driving coil part 220 can be directly wound on the coil part coupling part 212. As a modification, the coil portion coupling portion 212 may be formed as an upper side or a lower side opening type. At this time, the driving coil part 220 may be inserted into the coil part coupling part 212 through a portion opened in a previously wound state.

The bobbin 210 may include an upper engagement portion 213 coupled with the upper support member 610. The upper engagement portion 213 can be engaged with the inner side portion 612 of the upper support member 610. As an example, the projection (not shown) of the upper coupling portion 213 can be inserted and coupled to a groove or a hole (not shown) of the inner side portion 612. At this time, the projections of the upper coupling portion 213 are inserted into the holes of the inner side portion 612 and are thermally fused to fix the upper side support member 610.

The bobbin 210 may include a lower coupling portion 214 coupled with the lower support member 620. The lower engaging portion 214 can be engaged with the inner side portion 622 of the lower supporting member 620. [ As an example, the protrusion (not shown) of the lower coupling portion 214 may be inserted and coupled to a groove or a hole (not shown) of the inner side portion 622. At this time, the protrusion of the lower coupling part 214 is inserted into the hole of the inner side part 622 and is thermally fused to fix the lower side support member 620.

The bobbin 210 may include a sensing magnet receiving portion 215 in which the sensing magnet portion 710 is received. The sensing magnet accommodating portion 215 may be formed on one side of the bobbin 210. The sensing magnet accommodating portion 215 can accommodate the sensing magnet portion 710. The sensing magnet accommodating portion 215 may be recessed inward from the coil portion engaging portion 212.

The bobbin 210 may include a compensating magnet receiving portion 216 in which the compensating magnet portion 720 is received. The compensating magnet accommodating portion 216 may be formed on the other side of the bobbin 210. The compensation magnet accommodating portion 216 can accommodate the compensation magnet portion 720. The compensation magnet receiving portion 216 may be formed by being recessed inward from the coil portion coupling portion 212. The compensation magnet receiving portion 216 may be positioned symmetrically with respect to the center of the sensing magnet receiving portion 215 and the bobbin 210. In this case, if the magnetism of the sensing magnet portion 710 accommodated in the sensing magnet accommodating portion 215 and the compensating magnet portion 720 accommodated in the compensating magnet accommodating portion 216 are symmetrical, the sensing magnet portion 710 and compensation Electromagnetic balance can be achieved between the magnet portions 720. As a result, the influence of the sensing magnet unit 710 on the electromagnetic interaction between the driving coil unit 220 and the driving magnet unit 320 can be minimized.

The driving coil part 220 may be located on the bobbin 210. [ The driving coil section 220 can be opposed to the driving magnet section 320. The driving coil part 220 can move the bobbin 210 with respect to the housing 310 through an electromagnetic interaction with the driving magnet part 320. The driving coil part 220 may overlap with the sensing magnet part 710 in a direction perpendicular to the optical axis. The driving coil part 220 may be located outside the sensing magnet part 710.

The driving coil portion 220 may include at least one coil. The driving coil portion 220 may be a single coil and may be wound on the outer surface of the bobbin 210 by being guided by the coil portion coupling portion 212. As a modification, the driving coil section 220 may be disposed on the outer surface of the bobbin 210 so that four coils are independently provided and two neighboring coils form a 90 ° angle with each other.

The driving coil section 220 may include a pair of lead wires (not shown) for power supply. At this time, a pair of lead wires of the driving coil part 220 may be electrically connected to the first lower side support unit 624 and the second lower side support unit 625, which are the constituent elements of the lower side support member 620. One end of the driving coil part 220 may be electrically connected to the substrate 740 through the first lower supporting unit 624. [ The other end of the driving coil part 220 may be electrically connected to the substrate 740 through the second lower supporting unit 625. Alternatively, the driving coil part 220 may be supplied with power through the upper supporting member 610. On the other hand, when power is supplied to the driving coil unit 220, an electromagnetic field may be formed around the driving coil unit 220. The driving magnet portion 320 may be disposed on the bobbin 210 and the driving coil portion 220 may be disposed on the housing 310. [ In other words, the driving coil part 220 and the driving magnet part 320 can be disposed in different positions.

The stator 300 may be located outside the mover 200. The stator 300 may be supported by a base 500 positioned on the lower side. The stator 300 may be located in the inner space of the cover member 100. The stator 300 can move the mover 200 through electromagnetic interaction.

The stator 300 may include a housing 310 located outside the bobbin 210. The stator 300 may include a driving magnet part 320 positioned opposite to the driving coil part 220 and fixed to the housing 310.

The housing 310 may be located outside the bobbin 210. The bobbin 210 may be positioned inside the housing 310. The housing 310 may be provided with a drive magnet unit 320. A support member 600 may be coupled to the housing 310. An upper support member 610 may be coupled to the upper portion of the housing 310. The lower support member 620 may be coupled to the lower portion of the housing 310.

The housing 310 may be formed in a shape corresponding to the inner surface of the cover member 100. The housing 310 may be formed of an insulating material. The housing 310 can be formed as an injection molded article in consideration of productivity. The housing 310 may be fixed on the base 500. Alternatively, the housing 310 may be omitted and the drive magnet portion 320 may be directly fixed to the cover member 100. An upper support member 610 may be coupled to the upper portion of the housing 310 and a lower support member 620 may be coupled to the lower portion of the housing 310.

The housing 310 may include first to fourth corner portions 305, 306, 307, and 308 spaced from each other. The housing 310 may include a first corner portion 305 positioned between the first and second side portions 301 and 302. The housing 310 may include a second corner portion 306 positioned between the second and third side portions 302, 303. The housing 310 may include a third corner portion 307 positioned between the third and fourth side portions 303 and 304. The housing 310 may include a fourth corner portion 308 positioned between the fourth and first side portions 304 and 301.

The housing 310 includes a first side 301 and a first corner 305 positioned between the first side 301 and a second side 302 adjacent to the first side 301, And may be located at the first corner portion 305.

The upper and lower sides of the housing 310 are opened to accommodate the bobbin 210 movably in the optical axis direction. The housing 310 may include an inner space 311 on the inner side. The bobbin 210 may be movably positioned in the inner space 311. That is, the inner space 311 may be formed in a shape corresponding to the bobbin 210. The outer peripheral surface of the inner space 311 may be spaced apart from the outer peripheral surface of the bobbin 210.

The housing 310 may include a magnet coupling portion 312 formed on the side surface thereof to correspond to the driving magnet portion 320 and accommodating the driving magnet portion 320. The magnet coupling portion 312 can receive and fix the driving magnet portion 320. The magnet coupling portion 312 may be formed through the side surface of the housing 310. Alternatively, the magnet coupling portion 312 may be formed on the inner circumferential surface of the housing 310.

The magnet coupling portion 312 may include first to fourth coupling holes 331, 332, 333, and 334 that are spaced apart from each other. The first magnet 321 may be coupled to the first coupling hole 331. The second magnet 322 may be coupled to the second coupling hole 332. The third magnet 323 may be coupled to the third coupling hole 333. The fourth magnet 324 may be coupled to the fourth coupling hole 334. The first coupling hole 331 may be located on the first side 301 of the housing 310. The second coupling hole 332 may be located on the second side 302 of the housing 310. The third coupling hole 333 may be located on the third side portion 303 of the housing 310. The fourth engagement hole 334 may be located on the fourth side surface 304 of the housing 310. The first coupling hole 331 may be located closer to the fourth corner 308 than the first corner 305. The second coupling hole 332 may be positioned closer to the second corner portion 306 than the first corner portion 305. The third coupling hole 333 may be positioned closer to the second corner portion 306 than the third corner portion 307. [ The fourth coupling hole 334 may be located closer to the fourth corner 308 than the third corner 307. [ That is, the magnet coupling portion 312 may be biased toward the second corner portion 306 and the fourth corner portion 308.

The housing 310 may include an upper engagement portion 313 coupled with the upper support member 610. The upper engagement portion 313 can be engaged with the outer side portion 611 of the upper support member 610. As an example, the projections of the upper engagement portion 313 can be inserted into the grooves or holes (not shown) of the outer side portion 611 and coupled. At this time, the protrusion of the upper coupling part 313 may be thermally fused while being inserted into the hole of the outer side part 611 to fix the upper side support member 610.

The housing 310 may include a lower engagement portion (not shown) coupled with the lower support member 620. The lower coupling portion can engage with the outer side portion 621 of the lower support member 620. As one example, the protrusion of the lower coupling portion can be inserted into the groove or hole (not shown) of the outer side portion 621 and coupled. At this time, the projections of the lower coupling part are thermally fused while being inserted into the holes of the outer side part 621, so that the lower side support member 620 can be fixed. Alternatively, the outer side portion 621 of the lower support member 620 may be fixed by being inserted between and pressed between the lower surface of the housing 310 and the upper surface of the base 500.

The housing 310 may have a sensor substrate receiving portion 315 formed therein. The sensor substrate receiving portion 315 may be formed in the housing 310. The sensor substrate accommodating portion 315 can accommodate at least a part of the substrate 740. The sensor substrate receiving portion 315 may include a first receiving groove 316 that is recessed outward from the inner side surface of the first corner portion 305 of the housing 310. The sensor substrate receiving portion 315 may include a second receiving groove 317 which is recessed inward from the outer side surface of the first side portion 301 of the housing 310. The sensor substrate receiving portion 315 may include a third receiving groove 318 which is recessed upward from the lower surface of the first side portion 301 of the housing 310.

The first receiving groove 316 may be recessed outward from the inner surface of the first corner portion 305 of the housing 310. The second receiving groove 317 may be recessed inward from the outer side surface of the first side portion 301 of the housing 310. The first receiving groove 316 and the second receiving groove 317 can communicate with each other. The third receiving groove 318 may be recessed upward from the lower surface of the first side portion 301 of the housing 310. The first to third receiving grooves 318 can communicate with each other. The first to third receiving grooves 318 can accommodate at least a part of the substrate 740 and the sensor portion 730.

The drive magnet unit 320 may be located in the housing 310. The drive magnet section 320 can be opposed to the drive coil section 220. The driving magnet unit 320 may be fixed to the magnet unit engaging part 312 of the housing 310. The drive magnet part 320 may be adhered to the housing 310 with an adhesive. The driving magnet unit 320 can move the driving coil unit 220 through an electromagnetic interaction with the driving coil unit 220. The driving magnet portion 320 may not overlap the body portion 742 of the substrate 740 in a direction perpendicular to the optical axis.

The drive magnet unit 320 may include at least one magnet. The drive magnet unit 320 may include first to fourth magnets 321, 322, 323, and 324. The driving magnet unit 320 includes a first magnet 321 located on the first side face 301, a second magnet 322 located on the second side face 302 and a second magnet 322 located on the third side face 303 And a fourth magnet 324 located on the fourth side surface 304. The fourth magnet 324 may be a magnet.

The first to fourth magnets 321, 322, 323, and 324 may be spaced apart from each other. The first to fourth magnets 321, 322, 323, and 324 may be disposed in the housing 310 such that two neighboring magnets are 90 ° apart from each other. The first magnet 321 may be coupled to the first coupling hole 331 of the housing 310. The second magnet 322 may be coupled to the second engagement hole 332 of the housing 310. The third magnet 323 may be coupled to the third coupling hole 333 of the housing 310. The fourth magnet 324 may be coupled to the fourth coupling hole 334 of the housing 310. The first magnet 321 may be disposed symmetrically with respect to the center of the third magnet 323 and the housing 310. The second magnet 322 may be disposed symmetrically with respect to the center of the fourth magnet 324 and the housing 310.

The center of the first magnet 321 may be located closer to the fourth corner 308 than the first corner 305 of the housing 310. That is, the center of the first magnet 321 can be biased toward the fourth corner 308 side. The center of the second magnet 322 may be located closer to the second corner portion 306 than the first corner portion 305 of the housing 310. That is, the center of the second magnet 322 can be biased toward the second corner portion 306 side. The center of the third magnet 323 may be located closer to the second corner portion 306 than the third corner portion 307 of the housing 310. That is, the center of the third magnet 323 can be biased toward the second corner portion 306 side. The center of the fourth magnet 324 may be located closer to the fourth corner 308 than the third corner 307 of the housing 310. That is, the center of the fourth magnet 324 can be biased toward the fourth corner 308 side. In this case, electromagnetic interference between the first to fourth magnets 321, 322, 333, 334 and the sensing unit 700 can be minimized. That is, in this embodiment, the arrangement space of the sensing unit 700 can be ensured through the shape and arrangement structure of the drive magnet unit 320. [

The base 500 may be positioned below the bobbin 210. The base 500 may be positioned below the housing 310. The base 500 can support the stator 300. A printed circuit board may be positioned below the base 500. The base 500 can function as a sensor holder for protecting an image sensor mounted on a printed circuit board.

The base 500 may include a through hole 510, a terminal receiving portion 540, and a foreign matter collecting portion (not shown).

The base 500 may include a through hole 510 formed at a position corresponding to the lens coupling portion 211 of the bobbin 210. Meanwhile, an infrared ray filter may be coupled to the through hole 510 of the base 500. However, an infrared filter may be coupled to a separate sensor holder disposed under the base 500.

The base 500 may include a terminal accommodating portion 540 in which at least a portion of the terminal portion 743 of the substrate 740 is accommodated. The terminal accommodating portion 540 can accommodate at least a part of the terminal portion 743 of the substrate 740. The terminal accommodating portion 540 may be recessed inward from the outer surface of the base 500. The terminal portion 743 accommodated in the terminal accommodating portion 540 may be disposed such that the terminal is exposed to the outside.

The base 500 may include a foreign matter collecting unit for collecting foreign matter introduced into the cover member 100. The foreign matter collecting unit is located on the upper surface of the base 500 and can collect foreign substances on the inner space formed by the cover member 100 and the base 500 including the adhesive material.

The support member 600 may be coupled to the bobbin 210 and the housing 310. The support member 600 may include an elastic member. The support member 600 can movably support the bobbin 210 with respect to the housing 310. The support member 600 can movably support the bobbin 210 with respect to the base 500.

The support member 600 includes an upper support member 610 coupled to the upper portion of the housing 310 and the upper portion of the bobbin 210 and a lower support member 610 coupled to the lower portion of the housing 310 and the lower portion of the bobbin 210. [ 620 < / RTI > The damper may be located in the lower support member 620.

The support member 600 may include an upper support member 610 coupled to the upper portion of the bobbin 210 and the upper portion of the housing 310. The upper support member 610 may be coupled to the upper portion of the bobbin 210 and the upper portion of the housing 310. The upper support member 610 can elastically support the bobbin 210 with respect to the housing 310.

The upper support member 610 may include an outer portion 611, a medial portion 612, and a connection portion 613 as an example. The upper support member 610 includes an outer portion 611 coupled with the housing 310, a medial portion 612 coupled with the bobbin 210, and a connection portion 612 elastically connecting the outer portion 611 and the medial portion 612 613).

The upper support member 610 may be coupled to the upper portion of the bobbin 210 and the upper portion of the housing 310. The inner side portion 612 of the upper side support member 610 is coupled to the upper side coupling portion 213 of the bobbin 210 and the outer side portion 611 of the upper side support member 610 is coupled to the upper side coupling portion 313 of the housing 310, Lt; / RTI >

The support member 600 may include a lower support member 620 coupled to a lower portion of the bobbin 210 and a lower portion of the housing 310. The lower support member 620 may be coupled to the housing 310 and the bobbin 210. The lower support member 620 may be coupled to the lower portion of the bobbin 210 and the lower portion of the housing 310. The lower support member 620 can elastically support the bobbin 210 with respect to the housing 310.

The lower support member 620 may include an outer portion 621, a medial portion 622, and a connection portion 623 as an example. The lower support member 620 includes an outer side portion 621 coupled with the housing 310, an inner side portion 622 coupled with the bobbin 210, and a connecting portion 622 elastically connecting the outer side portion 621 and the inner side portion 622 623).

The lower support member 620 may be coupled to the lower portion of the bobbin 210 and the lower portion of the housing 310. The lower coupling portion 214 of the bobbin 210 is coupled to the inner side portion 622 of the lower support member 620 and the lower coupling portion of the housing 310 is coupled to the outer side portion 621 of the lower support member 620 have. However, the outer side portion 621 of the lower side support member 620 can be pressed and fixed between the lower surface of the housing 310 and the upper surface of the base 500.

The lower support members 620 may be provided in pairs to supply power to the driving coil unit 220. The lower support member 620 may include a first lower support unit 624 that electrically connects the one end of the drive coil section 220 to the substrate 740. The lower support member 620 may include a second lower support unit 625 that is spaced apart from the first lower support unit 624 and electrically connects the other end of the drive coil section 220 to the substrate 740 have.

The connection portion 623 of the lower support member 620 may include an outer extension 631 extending from the outer portion 621. The connection portion 623 may include an inner extension 632 extending from the inner portion 622. The connection portion 623 may include a connection extension portion 633 connecting the outer extension portion 631 and the inner extension portion 632. At this time, the connection extension part 633 may include a first extension part 634 and a second extension part 635 which is bent and extended from the first extension part 634.

The outer extension 631 may be extended at an angle of three or more as shown in Fig. The obliquely extending portion of the outer extension 631 may be sequentially extended from the outer portion 621 at an obtuse angle, an acute angle, and a right angle as shown in Fig. At this time, the obliquely extended portion of the outer extension 631 may be rounded.

The inner extension part 632 can connect the inner part 622 and the connection extension part 633 with each other as shown in FIG. However, the shape of the inner extension 632 is not limited thereto.

The connection extension part 633 may have an M shape as shown in FIG. More specifically, the extension portion 633 includes a first extension portion 634 extending obliquely from the inner extension portion 632, a second extension portion 635 extending obliquely from the first extension portion 634, A third extending portion 636 extending obliquely from the second extending portion 635 and a fourth extending portion 637 extending obliquely from the third extending portion 636 and connected to the outer extending portion 631 . At this time, the first extension part 634 and the second extension part 635 can be extended roundly. Therefore, it may be described that there is a separate round between the first extension 634 and the second extension 635. [ In addition, a description of the rounded portion may be applied between the second extended portion 635 to the fourth extended portion 637 as well. On the other hand, when the connection extension part 633 is extended as many times as described above, there is an advantage that the length of the connection part 623 can be sufficiently secured even in a limited space between the outer side part 621 and the inner side part 622. For reference, when the length of the connection portion 623 is secured, even if the width of the connection portion 623 is designed to be wide, the elasticity required for the connection portion 623 can be secured. The use of a wide width of the connection portion 623 at this time has the advantages of minimizing the occurrence of breakage or deformation and insensitivity to the occurrence of errors and the like. Therefore, the support of the camera module for an optical device The member 600 can be considered as a great advantage.

The inner side portion 622 of the lower support member 620 may include first and second engaging portions 641 and 642 which are engaged with the bobbin 210 and are spaced apart from each other. The inner side portion 622 may include a body portion 643 connecting the first and second engaging portions 641 and 642. The medial portion 622 may include a protrusion 644 that extends outward from the body portion 643 and at least a portion is located between the connection extensions 633.

The sensing unit 700 may sense and provide positional information of the lens module for the autofocus feedback function. The sensing unit 700 may include a sensing magnet unit 710, a compensation magnet unit 720, a sensor unit 730, and a substrate 740. The sensing magnet 710 may be located at one side of the bobbin 210. [ The compensation magnet 720 may be located on the other side of the bobbin 210. The sensor unit 730 is located in the housing 310 and can sense the sensing magnet 710.

The sensing magnet 710 may be located on the bobbin 210. [ The sensing magnet unit 710 can be sensed by the sensor unit 730. The sensing magnet portion 710 may be positioned to face the first corner portion 305 of the housing 310. The sensing magnet 710 may be positioned on a first imaginary line (L1 in Fig. 9) that is a virtual straight line connecting the first corner portion 305 and the third corner portion 307. [ The sensing magnet unit 710 may have magnetism corresponding to the compensation magnet unit 720. The sensing magnet 710 may be located on one side of the bobbin 210. [ The sensing magnet unit 710 may overlap with the driving coil unit 220 in a direction perpendicular to the optical axis. The sensing magnet unit 710 may be located inside the driving coil unit 220.

The sensing magnet unit 710 may be disposed in consideration of a relative position with respect to the sensor unit 730 so as to use only a section where the hole output is positive by four poles.

The compensation magnet section 720 may have magnetism corresponding to the sensing magnet section 710. [ The compensation magnet section 720 may be located on the other side of the bobbin 210. [ The compensation magnet unit 720 may be positioned on the first virtual line L1 which is a virtual straight line connecting the first corner unit 305 and the third corner unit 307. [ The compensation magnet unit 720 may be positioned symmetrically with respect to the center of the sensing magnet unit 710 and the bobbin 210. Thus, electromagnetic balancing can be performed between the sensing magnet unit 710 and the compensation magnet unit 720. As a result, the influence of the sensing magnet unit 710 on the electromagnetic interaction between the driving coil unit 220 and the driving magnet unit 320 can be minimized.

The sensor unit 730 can sense the sensing magnet unit 710. The sensor unit 730 may be positioned on the first virtual line L1 that is a virtual straight line connecting the first corner unit 305 and the third corner unit 307. [ That is, the sensor unit 730, the sensing magnet unit 710, and the compensating magnet unit 720 may all be located on the first imaginary line L1. The sensor unit 730 can be mounted on the substrate 740. The sensor portion 730 can be mounted on the extension portion 741 of the substrate 740. The sensor unit 730 may include a hall sensor (Hall IC) for sensing the magnetic field of the magnet.

The Hall sensor is fixed to the housing 310 and the sensing magnet unit 710 is fixed to the bobbin 210. When the sensing magnet unit 710 moves together with the bobbin 210, the magnetic flux density sensed by the Hall element in the Hall sensor changes according to the relative position of the Hall sensor and the sensing magnet unit 710. The Hall sensor can sense the position of the lens module using the output voltage of the hall sensor proportional to the magnetic flux density value that varies depending on the relative positions of the hall sensor and the sensing magnet unit 710. [

The sensor portion 730 may be mounted on the substrate 740. At least a portion of the substrate 740 may be received in the sensor substrate receiving portion 315 formed in the housing 310. The substrate 740 may be electrically connected to one end of the driving coil part 220 by the first lower supporting unit 624. [ The substrate 740 can be electrically connected to the other end of the driving coil part 220 by the second lower supporting unit 625. [ That is, the substrate 740 can supply power to the driving coil unit 220 through the lower supporting member 620. [

The substrate 740 may include a body portion 742 received in the second receiving groove 317 of the housing 310. The substrate 740 may include a terminal portion 743 extending downward from the body portion 742. The substrate 740 may include an extension portion 741 that is bent from the body portion 742 and received in the first receiving groove 316 of the housing 310 and in which the sensor portion 730 is mounted. The substrate 740 may be an FPCB (Flexible Printed Circuit Board). However, the present invention is not limited thereto.

The substrate 740 can be inserted into the sensor substrate receiving portion 315 of the housing 310 from below. The substrate 740 may be fixed by an adhesive (not shown) while being inserted into the sensor substrate receiving portion 315 of the housing 310. The body portion 742 is positioned on the outer side of the housing 310 and the extended portion 741 is positioned on the inner side of the housing 310 in the process of inserting the substrate 740 into the sensor substrate receiving portion 315 of the housing 310 As shown in FIG. The sensor portion 730 mounted on the inner surface of the extension portion 741 can be easily connected to the inner side of the body portion 742. [ It is possible to detect the sensing magnet unit 710 disposed at the high output.

The extension portion 741 may be bent from the body portion 742 and received in the first receiving groove 316 of the housing 310. The sensor portion 730 can be mounted on the extension portion 741. The body portion 742 can be received in the second receiving groove 317 of the housing 310. [ The body portion 742 may not overlap with the drive magnet portion 320 in a direction perpendicular to the optical axis. The terminal portion 743 may extend downward from the body portion 742. [ The terminal portion 743 can be exposed to the outside.

The lens driving apparatus 10 according to the present embodiment may include a bobbin subassembly. In the bobbin subassembly, the sensing magnet portion 710 and the compensating magnet portion 720 are fixed at two opposite corners of the assembly of the bobbin 210 and the driving coil portion 220. The space between the driving coil part 220 and the bobbin 210 is secured and the sensing magnet 710 and the compensating magnet part 720 are inserted into the pocket shape so that the same size as that of the general lens driving device 10 The reliability of the bonding of the sensing magnet portion 710 and the compensation magnet portion 720 can be secured. The reason why the sensing magnet 710 and the compensation magnet 720 are inserted together is that the influence of the magnetic field interference with the driving magnet 320 is symmetrical. Accordingly, when the magnetic field interference is small, only one sensing magnet unit 710 can be assembled.

The lens driving apparatus 10 according to the present embodiment may include a cover can assembly. In the cover can assembly, the assembly of the substrate 740 is fixedly inserted into the gap between the housing 310 and the cover member 100. With this structure, in this embodiment, the autofocus feedback function can be realized at the same size as that of the general AF lens driving apparatus by arranging the hall sensor at the corner portion. In this embodiment, the drive magnet unit 320 is disposed so as to be free from the sensing magnet unit 710 and the compensation magnet unit 720, so that the sensing magnet unit 710, the compensation magnet unit 720, It is possible to minimize the tilt generated by the influence of the magnetic field interference between the first and second portions 320.

The lens driving apparatus 10 according to the present embodiment may include a damper (not shown). The damper can be applied to the connection portion 623 of the lower support member 620 and the bobbin 210. Alternatively, the damper may be applied to the fixing frame of the connection portion 623 of the lower support member 620 and the lower support member 620. The damper may comprise an epoxy which is cured by ultraviolet radiation. On the other hand, in this embodiment, the process standardization design is possible by applying the damper on the lower side of the lower support member 620 so as to be similar to the general AF lens drive device.

The damper can be applied to the lower support member 620. The damper may include a damping gel. The damper may be located at the connecting portion 623. In this embodiment, the connection portion 623 may be referred to as a " movable portion ". In the present embodiment, the outer side portion 621 and the inner side portion 622 may be collectively referred to as a 'fixed frame'. According to this embodiment, it is easy to adjust the damping force in design by applying a damper between the movable portion of the lower support member 620 and the frame. According to this embodiment, the damper can be applied to a position between most of the movable part and the frame, and the damping gel application position can be set according to the damping force required by design.

The damper may include a first damper 810 integrally formed with the connection portion 623 and the inner side portion 622. The first damper has a first position 801 that is integrally applied to the first extended portion 634 and the protruding portion 644 and a second position 801 that is integrally applied to the second extended portion 635 and the protruding portion 644. [ (802). ≪ / RTI > The first damper has a third position 803 which is integrally applied to the outer extension 631 and the body portion 643, a fourth position which is integrally applied to the inner extension 632 and the body portion 643 And a fifth position 805 which is integrally applied to the connection extension part 633 and the body part 643. [

The damper may include a second damper (not shown) integrally applied to the connection portion 623 and the outer portion 621. The second damper can be applied to the sixth position 806, which is integrally applied to the connecting portion 623 and the outer portion 621. The second damper may be applied to each of a plurality of locations spaced apart from each other.

The damper may include, as a variant, a third damper integrally applied to the first extension portion 634 and the second extension portion 635 as shown in Fig. The third damper may be applied to the seventh position 807 which is integrally applied to the first extension 634 and the second extension 635. [

Hereinafter, the operation of the camera module according to the present embodiment will be described.

More specifically, the autofocus function of the camera module according to the present embodiment will be described. When the power is supplied to the driving coil part 220, the driving coil part 220 moves relative to the driving magnet part 320 by electromagnetic interaction between the driving coil part 220 and the driving magnet part 320 . At this time, the bobbin 210 to which the driving coil part 220 is coupled moves integrally with the driving coil part 220. That is, the bobbin 210, to which the lens module is coupled, moves in the direction of the optical axis with respect to the housing 310. This movement of the bobbin 210 results in moving the lens module closer to the image sensor or moving away from the image sensor. Thus, in the present embodiment, by supplying power to the driving coil part 220, .

On the other hand, in the camera module according to the present embodiment, autofocus feedback is applied for more accurate realization of the autofocus function. The sensor unit 730 disposed in the housing 310 senses the magnetic field of the sensing magnet unit 710 fixed to the bobbin 210. Therefore, when the bobbin 210 moves relative to the housing 310, the distance between the sensor unit 730 and the sensing magnet unit 710 changes. Therefore, the amount of the magnetic field sensed by the sensor unit 730 is Change. The sensor unit 730 senses the movement amount of the bobbin 210 in the optical axis direction or the position of the bobbin 210 in this manner and transmits the sensed value to the control unit. The control unit determines whether to perform an additional movement with respect to the bobbin 210 through the received sensing value. Since such a process is generated in real time, the autofocus function of the camera module according to the present embodiment can be performed more precisely through autofocus feedback.

In the foregoing, the present embodiment has been described as an AF model capable of performing an autofocus function. However, in the modification of this embodiment, the housing 310 and the base 500 are spaced apart from each other, and the side support member movably supports the housing 310 with respect to the base 500, and the OIS coil And may be positioned so as to face the additional drive magnet unit 320. That is, in the modification of this embodiment, the shake correction function can be performed together with the autofocus function.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: cover member 200: movable member
300: stator 500: base
600: support member 700: sensing unit

Claims (13)

housing;
A bobbin located inside the housing;
A first driver positioned in the bobbin;
A second driver positioned in the housing and facing the first driver;
A support member coupled to the housing and the bobbin; And
And a damper applied to the support member,
Wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion,
And the damper is located at the connection portion.
The method according to claim 1,
Wherein the damper includes a first damper integrally applied to the connecting portion and the inner portion.
3. The method of claim 2,
Wherein the connection portion includes an outer extension extending from the outer portion, an inner extension extending from the inner portion, and a connection extension connecting the outer extension and the inner extension,
Wherein the connection extension comprises a first extension and a second extension extending obliquely from the first extension,
Wherein the inner side portion includes first and second engaging portions that are engaged with the bobbin and are spaced apart from each other, a body portion that connects the first and second engaging portions, and at least a portion extending outward from the body portion, And the projecting portion is located between the projecting portions.
The method of claim 3,
The connection extension portion may further include a third extension portion extending obliquely from the second extension portion and a fourth extension portion extending obliquely from the third extension portion,
Wherein the first to fourth extensions are rounded at least in part.
The method of claim 3,
Wherein the first damper is applied to at least one of a first position that is integrally applied to the first extended portion and the projected portion and a second position that is integrally applied to the second extended portion and the projected portion, .
The method of claim 3,
The first damper may include a third position integrally applied to the outer extension portion and the body portion, a fourth position integrally applied to the inner extension portion and the body portion, and a fourth position integrally formed with the connection extension portion and the body portion, And the fifth position, which is integrally applied.
The method according to claim 1,
Wherein the damper includes a second damper integrally applied to the connection portion and the outer portion.
8. The method of claim 7,
Wherein the second damper is applied to each of a plurality of positions spaced apart from each other.
The method according to claim 1,
Wherein the connection portion includes an outer extension extending from the outer portion, an inner extension extending from the inner portion, and a connection extension connecting the outer extension and the inner extension,
Wherein the connection extension comprises a first extension and a second extension extending obliquely from the first extension,
Wherein the damper includes a third damper integrally applied to the first extending portion and the second extending portion.
The method according to claim 1,
A sensing magnet disposed on one side of the bobbin;
A compensating magnet located on the other side of the bobbin; And
And a sensor unit disposed in the housing and sensing the sensing magnet.
The method according to claim 1,
The support member includes an upper support member coupled to an upper portion of the housing and an upper portion of the bobbin, and a lower support member coupled to a lower portion of the housing and a lower portion of the bobbin,
And the damper is located on the lower support member.
housing;
A bobbin located inside the housing;
A first driver positioned in the bobbin;
A second driver positioned in the housing and facing the first driver;
A support member coupled to the housing and the bobbin; And
And a damper applied to the support member,
Wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion,
Wherein the damper is located at the connecting portion.
housing;
A bobbin located inside the housing;
A first driver positioned in the bobbin;
A second driver positioned in the housing and facing the first driver;
A support member coupled to the housing and the bobbin; And
And a damper applied to the support member,
Wherein the support member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, and a connection portion connecting the outer portion and the inner portion,
Wherein the damper is located at the connecting portion.

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