KR20200035522A - Apparatus for operating lens - Google Patents

Abstract

According to the present invention, provided is a lens driving apparatus which comprises: an optical system module reflecting light of an object incident from the outside in an optical axis direction; n carriers disposed on a lower part of the optical system module with respect to the optical axis and having a lens which is mounted therein wherein n is a natural number of 1 or more; a housing accommodating the n carriers; a magnet provided on one side of the n carriers; and a coil arranged in a direction facing the magnet. The efficiency of work on optical axis alignment or the like can be increased.

Description

Lens driving device {APPARATUS FOR OPERATING LENS}

The present invention relates to a lens driving device, and more particularly, to a lens driving device that improves driving efficiency of a zoom lens or the like through improvement of a physical structure.

In accordance with the development of hardware technology and changes in user environment, various and complex functions in addition to the basic functions for communication are integrated in portable terminals (mobile terminals).

A typical example is a camera module that implements functions such as auto focus (AF) and image stabilization (OIS). Recently, voice recognition, fingerprint recognition, and iris recognition for authentication and security, etc. Functions and the like are also installed in the portable terminal.

In addition, in recent years, it is also attempted to mount a zoom lens that can vary the size of a subject by variously adjusting a focal length through a zoom-in function and a zoom-out function.

The light of the object passing through the zoom lens is generated as image data through subsequent processing after flowing into an imaging device such as a charged-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) like other lenses.

In the case of a zoom lens, since a plurality of lenses or groups of lenses are arranged coaxially in the direction of the optical axis, which is a direction in which light is generally introduced, the length of the lens is extended in the direction of the optical axis, and various focal lengths are obtained. For adjustment, it has a characteristic that the movement displacement moving relative to the optical axis direction is relatively large.

In a device such as a conventional actuator, a zoom lens is fitted to a shaft that linearly guides the movement of the zoom lens (barrel or carrier equipped with the zoom lens) in the optical axis, and the zoom lens is moved along the shaft in this state. Is applied.

However, in such a structure, linear movement of the zoom lens may be induced to some extent, but since it is implemented as a physical structure that is fitted with the shaft, unnecessary frictional force occurs during linear movement, resulting in low power efficiency and precisely controlling the linear movement of the zoom lens. It is difficult to do this, and there is a problem that the overall driving performance is not high, such as unnecessary noise.

On the other hand, in order to implement functions such as extended zoom-in or zoom-out, one or more AF lenses and zoom lenses are provided in the actuator, and a structure using a combination of mutual positional relationships may be applied.

In this case, since the light of the subject passes through a plurality of lenses and flows into the image pickup device, it can be said that the precise optical axis alignment of each lens is very important. Problems that have a profound effect on them.

However, in the case of the conventional device, since the physical play between the shaft and the zoom lens cannot be fundamentally avoided, the tilt phenomenon of the zoom lens is likely to occur, and as mentioned above, the moving distance in the optical axis direction of the zoom lens is relatively large compared to AF, etc. The tilt phenomenon of the zoom lens may further degrade the precision of image processing.

There are several methods to implement AF and zoom, but as a representative method, a current of a specific size and direction is applied to a coil to generate electromagnetic force accordingly, and this electromagnetic force provides a driving force to a magnet provided in a carrier (lens mounted). Thus, the method of moving the carrier in the optical axis direction is applied.

The optical axis alignment test is performed based on the magnitude and direction of the current applied to the lens driving device (camera actuator). Each carrier provided inside the lens driving device moves as much as the intended size and distance based on the optical axis direction. It includes the process of precisely checking.

In the conventional lens driving device, when no current is applied to the coil, the force does not act between the coil and the magnet, so the carrier is not bound to a specific force, so it can be said that the free movement is possible.

Therefore, when performing the optical axis alignment test, it is necessary to perform a process of determining where the current carrier is and setting a movement code value at the corresponding location. Furthermore, when a plurality of carriers are provided in the lens driving apparatus, it is necessary to repeat this process for all carriers, so it takes a considerable amount of time for such an initial operation.

On the other hand, when a plurality of zoom lenses are provided in the lens driving device, the portable terminal becomes thick as much as it is installed in the direction in which it is erected from the main board of the portable terminal, that is, in the thickness direction of the portable terminal, like a conventional lens There is a problem in that it is difficult to optimize the essential characteristics of the device slimming aimed at the terminal.

Therefore, even if a plurality of zoom lenses are provided in the lens driving device, it can be said that it is necessary to improve the physical structure of the lens driving device and the structure of the electromagnetic field arrangement accordingly so that the final product, a portable terminal, can be thinly implemented.

The present invention was devised to solve the above-mentioned problems in the background as described above, and by implementing a structure to induce a carrier mounted with a lens to move to a specific position in a resting period when current is not supplied to the coil. It is an object of the present invention to provide a lens driving device in which a physical structure is implemented so as to improve the efficiency of work on the alignment of the optical axis and to prevent the thickness of the driving device itself from being increased even when a zoom lens is mounted.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by embodiments of the present invention. In addition, the objects and advantages of the present invention can be realized by a combination of the configuration and the configuration shown in the claims.

Lens drive of the present invention for achieving the above object is an optical system module for reflecting the light of the subject incident from the outside in the optical axis direction; N (n is a natural number greater than or equal to 1) carriers disposed on a lower portion of the optical system module with respect to the optical axis and on which the lens is mounted; A housing accommodating the n carriers; A magnet provided on one side of the n carriers; And it may be configured to include a coil disposed in the direction facing the magnet.

Here, the n (n is a natural number greater than or equal to 2) carriers of the present invention include: an upper carrier positioned on the basis of the optical axis direction among the two carriers adjacent to each other in the n carriers; And a lower carrier positioned lower than the upper carrier based on an optical axis direction, in which case the magnet provided on the upper carrier is provided on the left or right side of the upper carrier, and the magnet provided on the lower carrier is the It may be provided in the opposite direction of the magnet provided in the upper carrier.

In addition, the lens driving apparatus of the present invention is a ball disposed between the housing and the n carriers; And a yoke which is disposed to face the magnet with the ball interposed therebetween and generates an attractive force on the magnet.

Here, in the yoke of the present invention, the face width, which is the width of the direction facing the magnet, is made differentially based on the vertical direction of the optical axis, and in this case, the face width is larger than the upper portion based on the optical axis direction. It is desirable to configure.

More preferably, the lens driving device of the present invention is coupled to a coupling space formed on a side surface of the housing, and a target carrier, which is a carrier positioned below the coupling space based on an optical axis among the n carriers, moves upwards based on an optical axis direction. It may further include a stopper that restricts movement.

In this case, the coupling space of the present invention is preferably formed in a space larger than the size of the target carrier so that the target carrier can be installed inside the housing through the coupling space, and the stopper coupled to the coupling space is It is preferable to configure the size to correspond to the coupling space.

According to a preferred embodiment of the present invention, a lens having a relatively large movement distance in the optical axis direction, such as a zoom lens, is provided through an optical module that refracts (reflects) a path of light and a structure in which one or more carriers are positioned below it. Even if a plurality of devices are installed, the thickness of the device can be prevented from increasing.

In addition, according to another embodiment of the present invention, the width of the yoke generating the attraction force on the magnet provided in the carrier is configured differentially based on the vertical direction of the optical axis, or the width of the lower portion is relative to the width of the upper portion. By configuring it to be large, when a current is not applied to the coil, the position of the carrier can be induced to a specific position, so that processes such as optical axis alignment can be more efficiently implemented.

Furthermore, the present invention is provided with a structure such as a magnet and a coil for driving the movement of the carrier in the lateral direction rather than in the thickness direction of the device, and further provided to be alternated in different lateral directions for each carrier, thereby minimizing the influence of magnetic force on the coils. Independent driving for each carrier can be realized more effectively, and the thickness of the device can be further reduced.

The following drawings attached to this specification are intended to illustrate preferred embodiments of the present invention, and serve to more effectively understand the technical spirit of the present invention together with the detailed description of the invention described below. It should not be interpreted as being limited to the matter.
1 is a view showing the overall configuration of a lens driving apparatus according to the present invention,
2 is a view showing the internal configuration of a lens driving apparatus according to the present invention,
3 is a view showing a detailed configuration related to driving of the carrier according to the present invention;
4 and 5 is a view showing the arrangement relationship of a plurality of carriers and a driving unit according to the present invention,
6 is a view showing the configuration of the rear and yoke of the lens driving apparatus according to an embodiment of the present invention,
7 is a view showing a coupling relationship of a stopper according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to ordinary or lexical meanings, and the inventor appropriately explains the concept of terms to explain his or her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Therefore, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention and does not represent all of the technical spirit of the present invention, and various equivalents that can replace them at the time of this application It should be understood that there may be water and variations.

1 is a view showing the overall configuration of a module lens driving device (hereinafter referred to as a 'driving device') 1000 according to an exemplary embodiment of the present invention, and FIG. 2 shows the driving device 1000 of the present invention. It is a diagram showing an internal unit and a structure.

As shown in FIG. 1, the driving apparatus 1000 of the present invention includes n (n is a natural number of 1 or more) carriers 100 (100-1, 100-2, 100-3) on which a lens (not shown) is mounted. ), The n carriers 100 correspond to a configuration that linearly moves in the optical axis (Z axis) direction when a driving force is transmitted.

The driving unit that provides the driving force for moving the n carriers 100 in the optical axis direction can be implemented through various configurations such as a piezoelectric element and a motor, but coils and magnets are used to improve power consumption, low noise, space utilization, reaction speed or precision. It is preferably implemented using electromagnetic force generated between.

The driving apparatus 1000 of the present invention may be composed of only one or more carriers 100 that linearly move a lens or a carrier (lens mounted) provided therein in the optical axis direction (Z-axis direction), but according to an embodiment, the subject light Of course, the optical system module 400 for changing or refracting in the n-carrier 100 direction, that is, the direction of each lens provided in the n-carrier 100 may be implemented together.

When the optical system module 400 is provided together, the light (LIGHT) of the subject is introduced into the driving apparatus 1000 of the present invention through the opening 51 formed in the case 50 through the Z1 path, and the inside The flow of the incoming light is changed to the Z-axis (refraction or reflection, etc.) by the optical system module 400 of the present invention and passes through each lens provided in the carrier 100 and enters an imaging device such as a CCD (not shown). do.

The optical system module 400 for changing the path of light includes an optical system 401 that may be formed of a selected one of a mirror or a prism, or a combination thereof. The optical system 401 may be implemented by various members capable of changing the light entering from the external direction in the optical axis direction, but is preferably implemented by a glass material to improve optical performance.

The drive unit 1000 of the present invention, which includes the optical system module 400, is configured to refract a path of light so that light flows in the direction of the lens, so the lens itself can be installed in the longitudinal direction without installing in the thickness direction of the mobile terminal. Since it does not increase the thickness of the portable terminal, it can be optimized for miniaturization or slimness of the portable terminal.

The optical system 401 of the optical system module 400 is installed in the direction of the opening 51 of the case 50 through which the light flows into the driving device 1000 based on the example shown in FIG. 1, that is, the direction toward the Y axis. .

According to an embodiment, the optical system module 400 physically supports the optical system 401 while physically supporting the optical system 401 or a magnet provided in an object on which the optical system 401 is mounted, through a method of applying a magnetic force by a coil, or the like. It may be configured to rotate the optical system 401.

As described above, when the optical system 401 moves or rotates clockwise or counterclockwise relative to the YZ plane, the light of the subject reflected (refracted) through the optical system 401 moves in the + Y direction or the -Y direction, Since it is incident on the imaging device or the lens, Y-axis direction correction for hand shake can be implemented through driving of this mechanism.

Although three carriers 100 are shown in the drawing (100-1, 100-2, 100-3), this is only an example, and according to embodiments, a larger number of carriers 100 may be provided. Of course, it may be provided in a single number in some cases.

On the other hand, representative configurations for moving the lens-mounted carrier 100 in the optical axis direction include AF and ZOOM. In order to increase the efficiency of the description, in the drawings of the present invention, the optical system module 400 is based on the vertical direction of the optical axis. ) The carrier (100-1) located at the top of the carriers (100) located below is an AF carrier for implementing AF, and the two carriers (100-2, 100-3) located below are implemented to zoom It will be described as an example for a zoom carrier for.

However, this is only an example, and a carrier for implementing AF may not be present in the driving device 1000, and a plurality of carriers for implementing AF (100-1, 100-2, 100-3) Of course, it can be configured to be implemented in a form located at the middle or bottom of the center or to be implemented in an integrated form with the zoom function.

In this regard, since the carrier 100 may be provided in various numbers according to embodiments, in order to exemplify the driving device 1000 in which the AF function and the zoom function are combined, the driving device 1000 of the present invention is described in the following description. The number n of the carriers 100 is exemplified by a natural number of 2 or more.

In addition, in the following description, a vertical direction of a lens mounted on the carrier 100, that is, an axis corresponding to a path through which light enters the lens is defined as an optical axis (Z-axis), and two axes on a plane perpendicular to the optical axis (Z-axis). Define the axis as X axis and Y axis.

The housing 200 of the present invention is configured to provide a physical space in which these carriers 100 move in the optical axis direction. If the carrier 100 is a moving object, the housing 200 is fixed to the fixed body. It corresponds.

As illustrated in FIG. 1, the housing 200 of the present invention may be implemented as one object that accommodates all of n (n is a natural number of 2 or more) carriers 100-1, 100-2, 100-3. .

In addition, in order to increase the efficiency of the assembly process, etc., each carrier (100-1, 100-2, 100-3) is also implemented as a separate housing, so that each carrier and the housing can be combined with each other and implemented as a single independent module. In this case, the drive device 1000 of the present invention may be implemented in a form that these independent modules are mutually coupled up and down based on the optical axis direction.

As shown in FIG. 2, the carrier 100 of the present invention is arranged side by side in plural based on the vertical direction of the optical axis under the optical system module 400, and a lens mounting space 110 in which a lens is mounted in the center portion is formed.

The carrier 100 corresponding to the moving body is provided with a magnet 300 as shown in FIG. 2 and the like, and the coil 200 disposed in a direction facing the magnet 300 is provided in the housing 200 corresponding to the fixed body. It is equipped.

As described above, when power of an appropriate size and direction is applied to the coil 500 through control of an external control signal or an internal position detection signal, a corresponding magnetic force is generated in the magnet 300 to generate the magnet 300. The provided carrier 100 moves up and down based on the optical axis direction.

According to the present invention, n (n is a natural number greater than or equal to 2) carriers 100 are upper carriers positioned on the basis of the optical axis direction among two carriers adjacent to each other in n carriers 100 and mutually adjacent to the n carriers Among the two carriers, it may be divided into a lower carrier positioned below the higher carrier based on the optical axis direction.

As an example based on FIG. 2, if the carrier of reference number 100-1 is the upper carrier, the carrier of reference number 100-2 is the lower carrier, and if the carrier of reference number 100-2 is the upper carrier, then reference number 100-3 The carrier of becomes a subcarrier.

As described above, a carrier positioned above the mutually adjacent carriers based on the top and bottom of the optical axis may be referred to as an upper carrier, and a carrier positioned below the mutually adjacent carrier may be referred to as a lower carrier. In the following description, the carrier 100-2 is illustrated as an upper carrier and the carrier 100-3 is illustrated as a lower carrier.

The present invention may have a form in which a plurality of carriers 100 are included in the driving apparatus 1000, in which case each carrier 100 corresponds to its own magnet 300 and its own magnet 300. The magnets 300 and coils 500 for each carrier 100 have a maximum distance from the magnets and coils corresponding to other carriers so as to be more stably guaranteed to be independently driven by the magnetic force of the coil 500. It is preferred to be placed.

That is, the magnet 300 of the upper carrier 100-2 is to be provided on one side of the left or right side in the center portion based on the optical axis of the upper carrier 100-2, and the lower carrier 100-3 The magnet 300 of is configured to be provided in the opposite direction to the magnet 300 provided on the upper carrier (100-2).

As described above, the coil 500 that generates driving force to each carrier 100-2, 100-3 is disposed in a direction facing the magnet 300 of the corresponding carrier 100-2, 100-3, so that The coil 500 facing the magnet 300 of the carrier 100-2 and the coil 500 facing the magnet 300 of the lower carrier 100-3 are also arranged in different directions.

In this way, the combination of the magnet 300 and the coil 500 that moves each carrier 100 is arranged in a different direction from the combination of the magnet and the coil of this other carrier, thereby allowing the magnet vs. Coil, magnet vs. Magnet, coil vs. The interaction between the coils is minimized for each carrier 100, so that independent driving of the corresponding carrier 100 can be induced to be more stable.

Further, as shown in the drawings, the magnet 300 and the coil 500 of the present invention are arranged on the left and right sides (X-axis direction) side, not front and rear (Y-axis direction), based on the center portion of the optical axis direction of the carrier 100 Thus, the thickness (Y-axis direction) of the driving apparatus 1000 of the present invention can be minimized, so that when mounted on a portable terminal or the like, slimness of the portable terminal can be realized.

3 is a view showing a detailed configuration related to driving of the carrier 100 according to the present invention, and corresponds to a cross-sectional view of the driving device 1000 of the present invention cut along an XY plane perpendicular to an optical axis (Z axis). The carrier 100 illustrated in FIG. 3 illustrates the third positioned carrier 100-3 among n carriers 100 illustrated in FIGS. 1 and 2.

 The n carriers (100-1, 100-2, 100-3) are only slightly different from each other in overall shape or physical structure, depending on the coupling position and function, specifications of the mounted lens, etc., and all are based on the optical axis (Z axis) direction. As an internal configuration for implementing this as a linearly moving configuration, description of the internal configuration of the first and second positioned carriers 100-1 and 100-2 will be omitted.

3, the carriers 100 and 100-3 linearly move in the optical axis direction (Z-axis direction) with respect to the housing 200 corresponding to the fixture in the inner space of the housing 200.

A magnet 300 is provided on one side of the carriers 100 and 100-3, and a coil 500 facing the magnet 300 is provided on the housing 200, and an appropriate size and direction according to an external control signal, etc. When the power of is applied to the coil 500 mounted on the FPCB (circuit board) 600, the corresponding magnetic force is generated in the coil 500 and the carriers 100 and 100 equipped with the magnet 300 by the generated magnetic force -3) is linearly moved in the optical axis direction.

The position of the carriers 100 and 100-3, specifically the position of the magnet 300 provided in the carriers 100 and 100-3, so that the movement of the carriers 100 and 100-3 in the optical axis direction can be more precisely implemented A hall sensor for detecting a hall effect using a hall effect or a driving driver with a built-in hall sensor 510 (see FIG. 4) may be further provided.

The driving driver 510 utilizes the characteristics (magnitude and direction) of the signal output from the Hall sensor and the power applied to the coil 500 as a feedback control to more accurately carrier (100, 100-3), that is, carrier ( 100, 100-3), the position of the lens can be controlled.

As illustrated in FIG. 3, a ball 800 may be disposed between the housing 200 and the carriers 100 and 100-3, through which the housing 200 and the carriers 100 and 100- 3) can maintain a spaced apart interval.

In addition, the carrier (100, 100-3) of the present invention is based on the housing 200 with a minimum frictional force due to rolling, moving and point-contact of the ball 800 Since it moves in the optical axis direction, noise can be reduced, driving force can be minimized, and driving precision can be improved.

The ball (as shown in Figure 3) to maintain the separation between the housing 200 and the carrier (100, 100-3) a suitable distance and to ensure that the linear movement of the carrier (100, 100-3) is more effectively guided 800) is preferably provided in a form in which a predetermined portion is accommodated in the guide rails (120, 210) formed on one or more of the carrier (100, 100-3) or the housing (200).

In the drawing, the guide rails 120 and 210 are shown in a form in which the groove portion extends in the Z-axis direction, but some of them are configured to guide the shape of the groove portion or the ball 800 in which the ball 800 is accommodated, depending on the embodiment. Of course, it may be implemented in various shapes.

In addition, in order to increase the driving force and the efficiency of linear movement, the first guide rail 120, which is a guide rail provided on the carriers 100 and 100-3, and the second guide rail 210, which is a guide rail provided on the housing 200, One of the cross-section may be composed of a V-shaped rail, and the other guide rail may have a cross-section of U-shaped rail.

The yoke 700 of the present invention is a configuration that is disposed to face the magnet 300 with the ball 800 interposed therebetween, and generates a manpower on the magnet 300 provided in the carriers 100 and 100-3 to generate a magnet. The carriers 100 and 100-3 provided with the 300 are not separated from the housing 200, and the point of contact between the carriers 100 and 100-3 and the ball 800, as well as the housing 200 and The point contact with the ball 800 can be effectively maintained.

4 and 5 are a plurality of carriers according to the present invention (100-1, 100-2, 100-3) and the magnet (300) which is a driving unit for driving the carriers (100-1, 100-2, 100-3) It is a diagram showing the arrangement relationship of the coil 500.

 4 and 5, the plurality of carriers 100 according to the present invention are independently driven through respective individual controls by respective driving units (such as magnets and coils) and linearly move in the optical axis direction.

As described above, the plurality of carriers 100-1, 100-2 and 100-3 included in the driving apparatus 1000 of the present invention are arranged from top to bottom based on the optical axis, and each carrier ( Each magnet 300 and coil 500 for moving 100-1, 100-2, 100-3) are provided at alternating positions of left and right based on the X-axis direction as illustrated in FIGS. 4 and 5. It is desirable to construct.

Through this configuration, the influence of the magnetic force between the plurality of coils and the magnets on the other configuration can be minimized, so that the independent driving of each of the carriers 100 can be more stably implemented.

Furthermore, each of the magnet 300 and the coil 500 is configured to be disposed on the left or right side (X-axis direction) of the carrier 100 based on the center portion of the carrier 100 based on the optical axis (Z-axis). Thus, the thickness direction (Y-axis) of the driving device 1000 may not be increased, so that the thickness of the portable terminal on which the driving device 1000 is mounted, as well as the driving device 1000, can be implemented more thinly.

6 is a view showing the configuration of the rear surface and the yoke 700 of the driving apparatus 1000 according to an embodiment of the present invention.

The yoke 700 facing the magnets 300 provided on each carrier 100-1, 100-2, 100-3 as described above and generating an attractive force on each magnet 300 is shown in FIG. As described above, it is preferable to configure the size of the upper and lower parts to be made differentially based on the optical axis direction.

That is, the yoke 700 according to the present invention may be configured such that the facing width, which is the width in the direction facing the magnet 300, is made differentially based on the vertical direction of the optical axis (Z axis).

When the sizes of the upper and lower parts are made differently, a relatively different size of attraction is based on the optical axis in the vertical direction in relation to the magnets 300 provided in each carrier 100-1, 100-2, 100-3. This can happen.

Therefore, when power is applied to the coils 500 of each of the carriers 100-1, 100-2, and 100-3, the magnet 300 is positioned at a position corresponding to a relatively large portion of the attraction force among the yokes 700. That is, each carrier (100-1, 100-2, 100-3) provided with the magnet 300 can be induced to move, so the initial positioning of each carrier (100-1, 100-2, 100-3) And it is possible to more effectively implement the alignment of the optical axis, it is possible to omit the process of determining the initial position of the carrier 100 in the process of testing the optical axis alignment, etc. and setting the code value and the like.

FIG. 6 shows an example in which the size or width of the yoke increases as the direction of the optical axis goes downward based on the optical axis direction, but this is only an example, and the basic position of each carrier 100-1, 100-2, 100-3 ( Needless to say, the yoke areas 140, 240, and 340 having a relatively large size or width may vary depending on the setting of the position when no current is applied to the coil.

According to the embodiment, the facing width (width of the direction facing the magnet) of the yoke 700 is configured so that the lower part is larger than the upper part based on the optical axis direction so as to conform to the load direction by the own weight of the carrier 100 It is more preferable.

Reference numeral 600 shown in FIG. 6 is a circuit board implemented as an FPCB, and as illustrated in FIG. 6, the circuit board 600 is implemented in a single form, but each coil 500 is effectively implemented to interface with the outside. It is preferable to be configured to be bent or extended in a specific direction in which it is provided.

7 is a view showing a coupling relationship of the stopper 900 according to an exemplary embodiment of the present invention.

As shown in FIG. 7, the housing 200 of the present invention has a coupling space 230 formed on one side, and the stopper 900 of the present invention includes a housing in a form such as being fitted to the coupling space 230. 200).

The stopper 900 serves as a physical guide for inducing movement of the carrier 100 after being coupled to the housing 200, as well as serving as a physical guide for inducing movement of the carrier 100. The target carrier 100-3, which is the carrier 100 (100-3 based on FIG. 7) positioned below the location where the 900 is mounted, is physically restricted from moving upwards beyond an appropriate range based on the optical axis direction. It is configured to perform functions together.

As described above, by implementing the structure of the stopper 900 to be fitted to the coupling space 230 formed in the housing 200 from the side of the housing 200, the upper movement of the target carrier 100-3 is restricted. Of course, it is possible to easily implement a stopper, and before the stopper 900 is coupled, the carrier 100 can be more easily mounted into the housing 200 through this coupling space 230.

The coupling space 230 is provided in the housing 200 through the space so that the carrier 100 provided inside the housing 200 can be installed inside the housing 200 through the coupling space 230. It is preferably formed into a space of at least the volume or size of the target carrier to be installed.

In addition, the upper movement of the top carrier (100-1) of the carrier 100 is limited to the upper movement of the top carrier (100-1) within a predetermined range, as well as the optical module 400 is easy to the housing 200 structure Alignment guides 850 may be provided to be coupled and formed with a coupling portion that guides the optical axis between the optical system module 400 and the housing 200 to be easily and accurately aligned.

In FIG. 7, such a coupling portion is illustrated in a protruding form, and in this case, a physical structure corresponding to the coupling portion of the protruding shape is formed on the lower surface of the optical system module 400. Needless to say, the coupling structure by concave and convex may be implemented in various forms depending on the embodiment.

Although the present invention has been described above by way of limited examples and drawings, the present invention is not limited by this and will be described below and the technical idea of the present invention by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equal scope of the claims.

In the above description of the present invention, the first, second, etc. modifiers are only a term of a tool concept used to relatively distinguish components from each other, and thus are used to indicate a specific order, priority, etc. It should be interpreted as not being a term.

The accompanying drawings and the like for the description of the present invention and the embodiments thereof may be shown in a somewhat exaggerated form to emphasize or emphasize the technical contents of the present invention, but the above-described contents and the matters illustrated in the drawings In view of this, it should be interpreted that it is obvious that various types of modification examples may be possible at the level of those skilled in the art.

1000: lens driving device of the present invention
50: case 51: opening
100 (100-1, 100-2, 100-3): Carrier
110: lens mounting space 120: first guide rail
200: housing 210: second guide rail
230: bonding space 300: magnet
400: optical system module 500: coil
510: Hall sensor (drive driver) 600: Circuit board (FPCB)
700: York 800: Ball
850: alignment guide 900: stopper

Claims (7)

An optical system module that reflects light of a subject incident from the outside in the optical axis direction;
An n (n is a natural number of 1 or more) carriers disposed on the lower portion of the optical system module based on an optical axis and on which a lens is mounted;
A housing accommodating the n carriers;
A magnet provided on one side of the n carriers; And
And a coil disposed in a direction facing the magnet. The method of claim 1, wherein the n (n is a natural number of 2 or more) carriers,
Among the two carriers adjacent to each other in the n carriers, an upper carrier positioned above the optical axis direction; And
And a lower carrier positioned lower than the upper carrier based on an optical axis direction,
The magnet provided on the upper carrier is provided on the left or right side of the upper carrier,
The lens driving device provided in the lower carrier is provided in the opposite direction of the magnet provided in the upper carrier. According to claim 2,
A ball disposed between the housing and the n carriers; And
The lens driving device is disposed to face the magnet with the ball interposed therebetween, and further comprising a yoke generating an attraction force to the magnet. According to claim 3, The yoke,
A lens driving device characterized in that the width of the face, which is the width of the direction facing the magnet, is made differentially based on the vertical direction of the optical axis. The method of claim 4, wherein the face width,
Lens driving device characterized in that the lower portion is larger than the upper portion based on the optical axis direction. According to claim 2,
Further comprising a stopper that is coupled to the coupling space formed on the side of the housing, the target carrier, which is a carrier positioned below the coupling space based on the optical axis among the n carriers, further includes a stopper for moving upwards based on the optical axis direction Lens driving device characterized in that. The method of claim 6, wherein the coupling space,
A lens driving device characterized in that the target carrier is formed in a space larger than the size of the target carrier so that it can be installed inside the housing through the coupling space.

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