KR102522630B1 - Lens moving unit and camera module including the same - Google Patents

Abstract

The present invention provides a wide barrel accommodating at least one lens and having a first wide angle, a telebarrel disposed spaced apart from the wide barrel at a predetermined interval and accommodating at least one lens and having a second wide angle, and the wide barrel and the telebarrel. A lens barrel assembly including an assembly base accommodating a barrel, wherein the wide barrel and the tele barrel are tiltable at a predetermined angle.

Description

Lens moving unit and camera module including the same}

The embodiment relates to a lens driving device and a camera module including the same.

Since it is difficult to apply the technology of a voice coil motor (VCM) used in a conventional camera module to a camera module for ultra-small size and low power consumption, related research has been actively conducted.

In general, a digital camera device employs an optical zoom method for driving a subject to zoom in or zoom out using a tele lens and a wide lens.

However, since the size of the camera module mounted on small electronic products such as smart phones is small, it was not possible to adopt an optical zoom method using a tele lens and a wide lens like a general digital camera device.

Therefore, it was inevitable to adopt a digital zoom method for enlarging an object inside a camera device without actually driving a lens.

Due to this, unlike photos taken with a general digital camera device employing an optical zoom method, there is a problem in that noise is severe and pixels are broken compared to photos taken with digital zoom.

In addition, an attempt was made to adopt an optical zoom method by using a dual camera module in a camera module mounted on a small electronic product such as a smartphone, but the two cameras are spaced apart from each other at a predetermined interval, resulting in image shift (Image shift) occurred and there was a problem that the resolution was lowered.

Unlike the conventional lens driving device according to the embodiment, an object to be solved is to provide a lens driving device employing an optical zoom method in which noise is not generated and pixels are not broken, and a camera module including the same.

In addition, the lens driving device according to the embodiment solves the problem of providing a lens driving device and a camera module including the same that do not cause the problem of deterioration in resolution due to the two cameras being spaced apart from each other by a predetermined distance due to the use of a dual camera module. do what you want to do.

A lens driving device according to an embodiment includes a wide barrel accommodating at least one lens and having a first wide angle, a telebarrel disposed spaced apart from the wide barrel by a predetermined distance, accommodating at least one lens and having a second wide angle, and A lens barrel assembly including an assembly base accommodating the wide barrel and the telebarrel, wherein the wide barrel and the telebarrel are tiltable at a predetermined angle is provided as a means for solving the problem.

In addition, the assembly base provides a lens barrel assembly including a wide actuator for tilting the wide barrel and a tele actuator for tilting the telebarrel as a means for solving the problem.

In addition, as a means for solving the problem, providing a lens barrel assembly in which the wide actuator is disposed on the lower surface of the wide barrel and the teleactuator is disposed on the lower surface of the telebarrel.

In addition, the wide actuator may include a first wide actuator disposed above the lower surface of the wide barrel, a second wide actuator disposed on the left side of the lower surface of the wide barrel, and a third wide actuator disposed below the lower surface of the wide barrel. As a means to solve the problem, providing a lens barrel assembly including an actuator and a fourth wide actuator disposed on the right side of the lower surface of the wide barrel is provided.

Further, the teleactuators may include a first teleactuator disposed on the lower surface of the telebarrel, a second teleactuator disposed on the left side of the lower surface of the telebarrel, and a third teleactuator disposed on the lower surface of the lower surface of the telebarrel. To solve the problem, providing a lens barrel assembly including an actuator and a fourth teleactuator disposed on the right side of the lower surface of the telebarrel is provided.

In addition, as a means to solve the problem, providing a lens barrel assembly is provided so that the volume of the wide actuator and the teleactuator is variable according to voltage.

In addition, as a means for solving the problem, providing a lens barrel assembly in which the wide actuator and the tele actuator are piezo actuators is provided.

In addition, a first lens driving unit including a bobbin in which a lens barrel assembly is installed, a first coil is installed on an outer circumferential surface, and a housing supporting magnets disposed around the bobbin, the bobbin and the first lens A base disposed at a predetermined distance from the driving unit, a support member supplying power to the first coil, a second coil disposed to face the magnet of the first lens driving unit, and the second lens driving unit for the base. A second lens driving unit having a circuit board including a detection sensor for detecting the position of, a wide barrel accommodating at least one or more lenses and having a first wide angle, disposed spaced apart from the wide barrel at a predetermined interval, and having at least one or more lenses. A lens driving device including a telebarrel accommodating a lens and having a second wide angle and an assembly base accommodating the wide barrel and the telebarrel, wherein the wide barrel and the telebarrel are tiltable at a predetermined angle. as a means of solving the problem.

In addition, the assembly base provides a lens driving device including a wide actuator for tilting the wide barrel and a tele actuator for tilting the telebarrel as a means for solving the problem.

In addition, as a means for solving the problem, providing a lens driving device in which the wide actuator is disposed on the lower surface of the wide barrel and the teleactuator is disposed on the lower surface of the telebarrel.

In addition, as a means for solving the problem, providing a lens driving device provided such that the volume of the wide actuator and the teleactuator is variable according to voltage is provided.

In addition, a bobbin having an image sensor, a printed circuit board on which the image sensor is mounted, and a lens barrel assembly are installed inside, and a first coil is installed on an outer circumferential surface, and a housing supporting a magnet disposed around the bobbin. A first lens driving unit, a base spaced apart from the bobbin and the first lens driving unit by a predetermined distance, a support member supplying power to the first coil, and a first lens driving unit facing the magnet of the first lens driving unit. A second lens driving unit having a circuit board including 2 coils and a detection sensor for detecting a position of the second lens driving unit relative to the base, a wide barrel accommodating at least one lens and having a first wide angle; It includes a telebarrel disposed at a predetermined distance from the wide barrel, accommodating at least one lens and having a second wide angle, and an assembly base accommodating the wide barrel and the telebarrel, wherein the wide barrel and the telebarrel have a predetermined As a solution to the problem, providing a camera module including a lens driving device provided to be angularly tiltable is provided.

In addition, the assembly base provides a camera module including a wide actuator for tilting the wide barrel and a tele actuator for tilting the telebarrel as a means for solving the problem.

Unlike the conventional lens driving device according to the embodiment, an effect of the present invention is to provide a lens driving device employing an optical zoom method in which noise is not generated and pixels are not broken, and a camera module including the same.

In addition, the present invention provides a lens driving device and a camera module including the lens driving device that does not cause a problem of deterioration in resolution due to two cameras being spaced apart from each other by a predetermined distance due to the use of a dual camera module in the lens driving device according to the embodiment. as an effect of

1 is a perspective view schematically illustrating a lens driving device according to an exemplary embodiment.
2 is an exploded perspective view illustrating a lens driving device according to an exemplary embodiment.
FIG. 3 is a perspective view of a lens driving device according to an embodiment in which the cover member illustrated in FIGS. 1 and 2 is removed.
4 illustrates a principle of deterioration of resolution in the lens driving device using the dual camera module of the lens driving device according to the embodiment.
5 illustrates a configuration for preventing deterioration of resolution in a lens driving device using a dual camera module of a lens driving device according to an embodiment.
6 illustrates an exploded view and a perspective view of a lens barrel assembly of a lens driving device according to an exemplary embodiment.
7 illustrates an assembly base of a lens driving device according to an exemplary embodiment.
8 illustrates a base of a lens driving device according to an exemplary embodiment.

Hereinafter, examples will be described in order to explain the present invention in detail, and will be described in detail with reference to the accompanying drawings to help understanding of the present invention. However, embodiments according to the present invention can be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

In the description of the embodiment according to the present invention, in the case of being described as being formed on the "upper (above)" or "under (on or under)" of each element, the upper (upper) or lower (lower) (on or under) includes both elements formed by directly contacting each other or by placing one or more other elements between the two elements (indirectly). In addition, when expressed as “up (up)” or “down (down) (on or under)”, it may include the meaning of not only the upward direction but also the downward direction based on one element.

In addition, relational terms such as "first" and "second", "upper/upper/upper" and "lower/lower/lower" used below refer to any physical or logical relationship or It may be used only to distinguish one entity or element from another, without necessarily requiring or implying an order.

In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of explanation. Also, the size of each component does not fully reflect the actual size.

Hereinafter, with reference to the accompanying drawings, a lens driving device according to an embodiment will be described as follows. For convenience of description, the lens driving device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but it may be described using another coordinate system, and the embodiment is not limited thereto. In each figure, the x-axis and the y-axis mean directions perpendicular to the z-axis, which is the optical axis direction, and the z-axis direction, which is the optical axis direction, is referred to as a 'first direction', and the x-axis direction is referred to as a 'second direction', and y The axial direction may be referred to as a 'third direction'.

An 'image stabilization device' applied to a small camera module of a mobile device such as a smartphone or tablet PC prevents the outline of the captured image from being formed clearly due to vibration caused by the user's hand shake when capturing a still image. It may refer to a device configured to

Also, an 'auto focusing device' is a device that automatically focuses an image of a subject on an image sensor surface. Such an image stabilization device and auto focusing device may be configured in various ways. A lens driving device according to an embodiment moves an optical module composed of at least one lens in a first direction parallel to an optical axis, or in a first direction. The image stabilization operation and/or the auto focusing operation may be performed by moving with respect to the plane formed by the second and third directions perpendicular to the .

1 shows a schematic perspective view of a lens driving device according to an embodiment, and FIG. 2 shows an exploded perspective view of the lens driving device illustrated in FIG. 1 .

Referring to FIG. 1 , a lens driving device according to an embodiment may include a first lens driving unit (not shown), a second lens driving unit (not shown), and a cover member 300 . Here, the first lens driving unit (not shown) may serve as the aforementioned auto focusing device, and the second lens driving unit (not shown) may serve as the aforementioned image stabilization device.

The cover member 300 may be provided in a substantially box shape and may cover the first and second lens driving units (not shown).

As shown in FIG. 2 , the lens driving device according to the embodiment may include a movable part. At this time, the movable unit may perform functions of auto focusing of the lens and hand shake correction. The movable unit may include the bobbin 110, the first coil 120, the first magnet 130, the housing 140, the upper elastic member 150, and the lower elastic member 160.

The bobbin 110 has a first coil 120 disposed inside the first magnet 130 on an outer circumferential surface thereof, and the first coil 120 is provided for electromagnetic interaction between the first magnet 130 and the first coil 120. It may be installed in the inner space of the housing 140 to be reciprocally movable in the first direction. A first coil 120 is installed on the outer circumferential surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130 .

In addition, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160 and moves in a first direction to perform an auto focusing function.

The bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed. The lens barrel may be coupled to the inside of the bobbin 110 in various ways.

For example, a female screw thread may be formed on an inner circumferential surface of the bobbin 110 and a male screw thread corresponding to the screw thread may be formed on an outer circumferential surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing of the female screw thread. However, this is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screw coupling without forming a thread on the inner circumferential surface of the bobbin 110 . Alternatively, the one or more lenses may be integrally formed with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be composed of one sheet, or two or more lenses may form an optical system.

The auto focusing function is controlled according to the direction of the current, and the auto focusing function may be implemented by moving the bobbin 110 in the first direction. For example, when a forward current is applied, the bobbin 110 may move upward from an initial position, and when a reverse current is applied, the bobbin 110 may move downward from an initial position. Alternatively, the moving distance in one direction from the initial position may be increased or decreased by adjusting the amount of one-way current.

A plurality of upper support protrusions and lower support protrusions may protrude from the upper and lower surfaces of the bobbin 110 . The upper support protrusion may be provided in a cylindrical shape or a prismatic shape, and may couple and fix the upper elastic member 150 . The lower support protrusion may be provided in a cylindrical shape or a prismatic shape like the upper support protrusion described above, and may couple and fix the lower elastic member 160 .

The upper elastic member 150 may be provided on the upper side of the bobbin 110, and the lower elastic member 160 may be provided on the lower side of the bobbin 110. In this case, a through hole corresponding to the upper support protrusion may be formed in the upper elastic member 150 , and a through hole corresponding to the lower support protrusion may be formed in the lower elastic member 160 . Each of the support protrusions and the through hole may be fixedly coupled by thermal fusion or an adhesive member such as epoxy.

The housing 140 may have a hollow pillar shape supporting the first magnet 130 and may be formed in a substantially rectangular shape. The first magnet 130 and the support member 220 may be coupled to each other and disposed on the side surface of the housing 140 .

In addition, as described above, the bobbin 110 guided by the elastic members 150 and 160 and moving in the first direction may be disposed inside the housing 140 . In the embodiment, the first magnet 130 may be disposed at a corner of the housing 140, and the support member 220 may be disposed at a side surface of the housing 140.

The upper elastic member 150 and the lower elastic member 160 may elastically support the upward and/or downward movement of the bobbin 110 in the first direction. The upper elastic member 150 and the lower elastic member 160 may be provided as leaf springs.

As shown in FIG. 2 , the upper elastic member 150 may be provided in two pieces separated from each other. Through this two-part structure, the divided parts of the upper elastic member 150 may receive currents of different polarities or different power sources. Also, as a modified embodiment, the lower elastic member 160 may have a two-part structure and the upper elastic member 150 may have an integral structure.

Meanwhile, the upper elastic member 150, the lower elastic member 160, the bobbin 110, and the housing 140 may be assembled through thermal fusion and/or bonding using an adhesive. At this time, for example, the fixing operation may be completed by bonding using an adhesive after heat fusion fixation.

The base 210 is disposed below the bobbin 110 and may be provided in a substantially rectangular shape, the printed circuit board 250 may be seated, and the lower side of the support member 220 may be fixed. In addition, a support member 220 seating groove 214 into which the support member 220 can be inserted may be formed concavely on the upper surface of the base 210 . An adhesive is applied to the seating groove 214 of the support member 220 to fix the support member 220 so as not to move.

A support groove having a corresponding size may be formed on a surface of the base 210 facing the portion where the terminal surface 253 of the printed circuit board 250 is formed. This support groove is formed concavely inward from the outer circumferential surface of the base 210 to a certain depth, so that the portion where the terminal surface 253 is formed does not protrude outward or the amount of protrusion can be adjusted.

The support member 220 is disposed on the side of the housing 140, has an upper side coupled to the housing 140 and a lower side coupled to the base 210, and the bobbin 110 and the housing 140 are It can be supported to be movable in the second and third directions perpendicular to the first direction, and can also be electrically connected to the first coil 120 .

Since each of the support members 220 according to the embodiment is disposed on the rectangular outer surface of the housing 140, a total of four may be installed symmetrically with each other. However, it is not limited to this, and it is also possible to consist of eight, two for each straight plane. Also, the support member 220 may be electrically connected to the upper elastic member 150 or electrically connected to a straight surface of the upper elastic member 150 .

In addition, since the support member 220 is formed as a separate member from the upper elastic member 150, the support member 220 and the upper elastic member 150 may be electrically connected through conductive adhesive or solder. Accordingly, the upper elastic member 150 may apply current to the first coil 120 through the electrically connected support member 220 .

Meanwhile, in FIG. 2 , the plate-shaped support member 220 is illustrated as an embodiment, but is not limited thereto. That is, the support member may be provided in the form of a wire.

The second coil 230 may perform hand shake correction by moving the housing 140 in the second and/or third directions through electromagnetic interaction with the first magnet 130 .

Here, the second and third directions may include directions substantially close to the x-axis and y-axis directions as well as the x-axis and y-axis directions. That is, when viewed from the driving side of the embodiment, the housing 140 may move parallel to the x-axis and y-axis, but may also move slightly inclined to the x-axis and y-axis when moving while being supported by the support member 220 there is.

In addition, the first magnet 130 needs to be installed at a position corresponding to the second coil 230.

The second coil 230 may be disposed to face the first magnet 130 fixed to the housing 140 . In one embodiment, the second coil 230 may be disposed outside the first magnet 130 . Alternatively, the second coil 230 may be installed on the lower side of the first magnet 130 at a predetermined distance apart.

According to the embodiment, a total of four second coils 230 may be installed at four corners of the circuit member 231, but is not limited thereto, one for the second direction and one for the third direction. It is possible that only two lights are installed, and four or more lights may be installed.

In the case of the embodiment, a circuit pattern is formed on the circuit member 231 in the shape of the second coil 230, and an additional second coil may be disposed above the circuit member 231, but is not limited thereto, and the circuit pattern is not limited thereto. Without forming a circuit pattern in the shape of the second coil 230 on the member 231 , only a separate second coil 230 may be disposed above the circuit member 231 .

Alternatively, it is also possible to configure the second coil 230 by winding a wire in a donut shape or to form the second coil 230 in an FP coil shape and electrically connect it to the printed circuit board 250.

The second coil 230 may be disposed above the base 210 and below the housing 140 . At this time, the circuit member 231 including the second coil 230 may be installed on the upper surface of the printed circuit board 250 disposed above the base 210 .

However, it is not limited thereto, and the second coil 230 may be disposed in close contact with the base 210 or may be disposed apart from each other by a certain distance, and may be formed on a separate substrate to attach the substrate to the printed circuit board 250. Stacked connections are also possible.

The printed circuit board 250 is coupled to the upper surface of the base 210, and as shown in FIG. 2, a through hole or groove is formed at a corresponding position so that the support member 220 seating groove 214 can be exposed. can be formed

A bent terminal surface 253 on which the terminal 251 is installed may be formed on the printed circuit board 250 . In the embodiment, a printed circuit board 250 having two bent terminal faces 253 is shown. A plurality of terminals 251 are disposed on the terminal surface 253 to receive external power and supply current to the first coil 120 and the second coil. The number of terminals formed on the terminal surface 253 may be increased or decreased according to the types of components that need to be controlled. Also, the printed circuit board 250 may include one or more than three terminal surfaces 253 .

The cover member 300 may be provided in a substantially box shape, accommodate the movable part, the second coil 230, and a part of the printed circuit board 250, and may be combined with the base 210. The cover member 300 protects the movable part, the second coil 230, the printed circuit board 250, etc. accommodated therein from being damaged, and in particular, the first magnet 130, the first The leakage of the electromagnetic field generated by the coil 120, the second coil 230, and the like to the outside can be restricted so that the electromagnetic field can be focused.

3 is an exploded perspective view showing a base 210, a printed circuit board 250, and a second coil 230 according to an embodiment. The lens driving device may further include a position sensor (240).

The position sensor 240 is disposed at the center of the second coil 230 and can detect the movement of the housing 140 . At this time, the position sensor 240 can basically detect the movement of the housing 140 in the first direction, and in some cases may be provided to detect the movement of the housing 140 in the second and third directions. .

The position sensor 240 may be provided with a hall sensor or the like, and any other sensor capable of detecting a change in magnetic force may be used. As shown in FIG. 3, a total of two position sensors 240 may be installed at the corners of the base 210 disposed below the printed circuit board 250, and the mounted position sensors 240 ) may be inserted into the position sensor seating groove 215 formed in the base 210. A lower surface of the printed circuit board 240 may be an opposite surface to the surface on which the second coil 230 is disposed.

Meanwhile, the position sensor 240 may be disposed at a predetermined distance from the lower side of the second coil 230 with the printed circuit board 250 interposed therebetween. That is, the position sensor 240 is not directly connected to the second coil 230, and the second coil 230 is located on the upper surface of the printed circuit board 250, and the position sensor on the lower surface ( 240) may be installed.

Meanwhile, the lens driving device according to the above-described embodiment may be used in various fields, for example, a camera module. For example, the camera module can be applied to mobile devices such as mobile phones.

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110 and an image sensor (not shown). In this case, the lens barrel may include at least one lens that transmits an image to the image sensor.

In addition, the camera module may further include an infrared cut filter (not shown). The infrared cut filter serves to block light in the infrared region from being incident on the image sensor.

In this case, in the base 210 illustrated in FIG. 2 , an infrared cut filter may be installed at a position corresponding to the image sensor and may be coupled to a holder member (not shown). Also, the holder member may support the lower side of the base 210 .

A separate terminal member may be installed on the base 210 to conduct electricity with the printed circuit board 250, or the terminal may be integrally formed using a surface electrode or the like.

Meanwhile, the base 210 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed downward along a side surface of the base 210 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed below the base 210 to perform its role.

As described above, one lens barrel 190 may be provided to perform its role, but two or more lens barrels 190 may be provided as needed.

Hereinafter, for convenience of description, a case in which two lens barrels 190 are provided is assumed, and a lens driving device according to an embodiment will be described with respect to a dual camera module.

4 illustrates a principle of deterioration of resolution in the lens driving device using the dual camera module of the lens driving device according to the embodiment.

Referring to FIG. 4 , the lens barrel assembly 197 may include a wide part 198 providing a wide angle and a tele part 199 providing a narrow wide angle.

The wide part 198 may include a wide barrel 1981 accommodating a plurality of lenses to collect light at a wide angle and a wide base 1983 provided to support the wide barrel 1981 .

The tele part 199 may include a tele barrel 1991 for accommodating a plurality of lenses and collecting light at a narrow wide angle, and a tele base 1993 provided to support the tele barrel 1991.

Although the wide base 1983 and the telebase 1993 of the embodiment are shown in a plate shape having a predetermined height, the shapes of the wide base 1983 and the telebase 1993 can be modified according to the user's needs, and the wide base (1983) and the telebase (1993) are provided to support the wide barrel (1981) and the telebarrel (1991), respectively, and the scope of the present invention is not limited thereto.

As described above, when a subject is photographed using the lens barrel assembly 197 including the wide part 198 and the tele part 199, resolution can be increased.

However, the wide barrel 1981 of the wide part 198 and the telebarrel 1991 of the tele part 199 of this embodiment are structures for photographing a subject in a fixed state.

The wide angle of the wide barrel 1981 may be provided as a first wide angle (A), and the wide angle of the telebarrel 1991 may be provided as a second wide angle (B).

The first wide angle (A) may be larger than the second wide angle (B).

In addition, the wide barrel 1981 and the telebarrel 1991 may be arranged to be spaced apart by a predetermined distance. In this case, the first optical axis X1 of the wide barrel 1981 and the second optical axis of the telebarrel 1991 The optical axes X2 may be provided to be parallel to each other.

As shown in the figure, the first optical axis (X1) of the wide barrel (1981) of the lens driving device according to the embodiment is biased in a first direction from the center of the subject by a predetermined distance, and the second optical axis ( X2) causes a phenomenon that is biased by a predetermined interval from the center of the subject in the second direction opposite to the first direction.

The first optical axis X1 and the second optical axis X2 are biased from the center of the subject by a predetermined distance, resulting in reduced resolution of the subject.

Therefore, an embodiment for solving this problem will be described with reference to FIGS. 5 to 7 below.

5 illustrates a configuration for preventing deterioration of resolution in a lens driving device using a dual camera module of a lens driving device according to an embodiment.

Referring to FIG. 5 , the lens barrel assembly 197 may include a wide part 198 providing a wide angle and a tele part 199 providing a narrow wide angle.

The wide part 198 may include a wide barrel 1981 accommodating a plurality of lenses to collect light at a wide angle and a wide base 1983 provided to support the wide barrel 1981 .

The tele part 199 may include a tele barrel 1991 for accommodating a plurality of lenses and collecting light at a narrow wide angle, and a tele base 1993 provided to support the tele barrel 1991.

Although the wide base 1983 and the telebase 1993 of the embodiment are shown in a plate shape having a predetermined height, the shapes of the wide base 1983 and the telebase 1993 can be modified according to the user's needs, and the wide base (1983) and the telebase (1993) are provided to support the wide barrel (1981) and the telebarrel (1991), respectively, and the scope of the present invention is not limited thereto.

The wide angle of the wide barrel 1981 may be provided as a first wide angle (A), and the wide angle of the telebarrel 1991 may be provided as a second wide angle (B).

The first wide angle (A) may be larger than the second wide angle (B).

However, unlike the lens barrel assembly 197 described in FIG. 4, in the lens barrel assembly 197 of this embodiment, the wide barrel 1981 of the wide part 198 and the tele barrel 1991 of the tele part 199 have a predetermined angle. It may be provided to be tilted.

More specifically, assuming that the subject is disposed between the wide barrel 1981 and the telebarrel 1991, the wide barrel 1981 may be tilted at a predetermined angle toward the subject, that is, in the direction of the telebarrel 1991. The telebarrel 1991 may also be tilted at a predetermined angle toward the subject, that is, in the direction of the wide barrel 1981.

When the wide barrel 1981 and the telebarrel 1991 are tilted toward each other, the first optical axis X1 of the wide barrel 1981 and the second optical axis X2 of the telebarrel 1991 may also be tilted.

That is, the first optical axis (X1) of the existing wide barrel (1981) becomes a new third optical axis (X1') as shown, and the second optical axis (X2) of the telebarrel (1991) is also tilted to form a new fourth optical axis ( X2').

Accordingly, the third optical axis X1' and the fourth optical axis X2' may be located at the center of the subject, respectively. As a result, an effect of increasing the resolution occurs.

Hereinafter, a lens barrel assembly for tilting the wide barrel 1981 and the tele barrel 1991 will be described in detail with reference to FIGS. 6 and 7 .

6 is an exploded view and a perspective view of a lens barrel assembly of a lens driving device according to an embodiment, and FIG. 7 is an assembly base of the lens driving device according to an embodiment.

6 and 7, the lens barrel assembly 197 includes a cover 1971 forming an upper surface, a wide part 198 for photographing a subject with a wide angle, and a tele part for photographing a subject with a narrow wide angle ( 199), and an assembly base 1972 supporting lower surfaces of the wide part 198 and the tele part 199 and tilting the wide part 198 and the tele part 199.

The cover 1971 includes a wide hole 1971-1 providing a space for accommodating the front of the wide barrel 1981 and a tele hole 1971-2 providing a space for accommodating the front of the telebarrel 1993. can include

The wide part 198 may include a wide barrel 1981 in which a plurality of lenses are stacked to photograph a subject, and a wide base 1983 provided in a plate shape and supporting a lower surface of the wide barrel 1981 .

The tele unit 199 may include a tele barrel 1991 in which a plurality of lenses are stacked to photograph a subject, and a tele base 1993 provided in a plate shape and supporting a lower surface of the tele barrel 1991.

The assembly base 1972 may provide an accommodation space for accommodating the wide part 198 and the tele part 199.

More specifically, one side of the assembly 1972 may include a wide base accommodating part 1975 for accommodating the wide base 1983, and the other side of the assembly 1972 may include the tele base 1993. It may include a telebase receiving portion 1976 for accommodating.

In addition, a plurality of actuators 1973 provided to independently tilt the wide barrel 1981 and the tele barrel 1991 may be further included below the inner surface of the assembly 1972 .

The lower inner surface of the assembly base 1972 may include a plurality of actuator accommodating parts 1974 accommodating a plurality of actuators 1973 .

More specifically, the actuator 1973 may include a wide actuator 1973-1 for tilting the wide barrel 1981 and a tele actuator 1973-2 for tilting the telebarrel 1991.

The wide actuator (1973-1) is a first wide actuator (W-1) disposed in the upper center based on the lower surface of the wide barrel (1981), a second wide actuator (W-2) disposed in the center of the left side, and a lower A third wide actuator (W-3) disposed in the center and a fourth wide actuator (W-4) disposed in the center of the right side may be included.

The teleactuator (1973-2) is a first teleactuator (T-1) disposed in the upper center with respect to the lower surface of the telebarrel (1991), a second teleactuator (T-2) disposed in the center of the left side, and a lower A third teleactuator T-3 disposed in the center and a fourth teleactuator T-4 disposed in the center of the right side may be included.

The wide actuator 1973-1 and the teleactuator 1973-2 described above may be independently controllable.

The actuator 1973 may be provided as a piezo actuator.

A piezo actuator is a positioning element using the piezoelectric effect, and is an actuator capable of positioning from a range of nanometers to hundreds of microns.

This can change the volume of the actuator by applying a voltage using the piezoelectric effect.

However, this is an example, and the type of actuator 1973 may be provided differently according to the user's needs, and the scope of the present invention cannot be considered to be limited thereto.

Hereinafter, a principle of tilting the wide barrel 1981 and the tele barrel 1991 using the actuator 1973 will be described.

For example, to tilt the wide barrel 1981 toward the telebarrel 1991, the left side of the wide barrel 1981 must be raised. Therefore, if the volume of the first wide actuator (W-1) is increased by applying current to the first wide actuator (W-1) disposed in the center of the left part of the wide barrel (1981), the wide barrel (1981) is a telebarrel (1991). ) will be inclined towards

Conversely, to tilt the telebarrel 1991 toward the wide barrel 1981, the right side of the telebarrel 1991 must be raised. Therefore, if the volume of the fourth teleactuator T-1 is increased by applying current to the fourth teleactuator T-1 disposed at the center of the right side of the telebarrel 1991, the telebarrel 1991 is a wide barrel ( 1981) is leaning toward

In addition, the angle at which the wide barrel 1981 and the telebarrel 1991 are tilted can be controlled by current supplied to the actuator 1973.

Meanwhile, referring to FIG. 8 , the second coil 230 may include a fifth through hole 230a passing through a corner portion of the circuit member 231 . The support member 220 may be connected to the circuit board 250 through the fifth through hole 230a. Alternatively, when the second coil 230 is in the form of an FP coil, an Optical Image Stabilizer (OIS) coil 232 may be formed or disposed in a partial region of the FP coil. In addition, the fifth through hole 230a is not formed in the portion of the second coil 230 where the fifth through hole 230a is formed, and the support member 220 may be electrically soldered to this portion.

Although the above has been described with reference to the embodiments, these are merely examples and do not limit the present invention, and those skilled in the art to which the present invention belongs will not deviate from the essential characteristics of the present embodiment. It will be appreciated that various variations and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention as defined in the appended claims.

100: first lens driving unit 200: second lens driving unit
110: bobbin 120: first coil
130: first magnet 140: housing
160: lower elastic member 170: first detection sensor
180: second magnet 210: base
190: lens barrel 193: body
197: lens barrel assembly 198: wide part
199: Telebu 1971: Cover
1972: Assembly Base 1973: Actuator
1973-1: Wide Actuator 1973-2: Tele Actuator
1974: Actuator receiving part 1975: Wide base receiving part
1976: Telebase receiver

Claims (13)

a wide barrel accommodating at least one lens and having a first wide angle;
a telebarrel disposed at a predetermined distance from the wide barrel, accommodating at least one lens, and having a second wide angle smaller than the first wide angle; and
An assembly base accommodating the wide barrel and the telebarrel; includes,
The wide barrel and the telebarrel are each independently tiltable at a predetermined angle,
The assembly base,
a wide actuator tilting the wide barrel; and
A lens barrel assembly including a tele actuator for tilting the telebarrel independently with respect to the wide barrel. delete According to claim 1,
The lens barrel assembly of claim 1 , wherein the wide actuator is disposed on a lower surface of the wide barrel, and the tele actuator is disposed on a lower surface of the telebarrel. According to claim 1,
The wide actuator,
a first wide actuator disposed above the lower surface of the wide barrel;
a second wide actuator disposed on the left side of the lower surface of the wide barrel;
a third wide actuator disposed below the lower surface of the wide barrel; and
A lens barrel assembly including a fourth wide actuator disposed on the right side of the lower surface of the wide barrel. According to claim 1,
The teleactuator,
a first teleactuator disposed above the lower surface of the telebarrel;
a second teleactuator disposed on the left side of the lower surface of the telebarrel;
a third teleactuator disposed under the lower surface of the telebarrel; and
A lens barrel assembly including a fourth teleactuator disposed on the right side of the lower surface of the telebarrel. According to claim 1,
The lens barrel assembly wherein the wide actuator and the teleactuator have a volume variable according to a voltage. According to claim 1,
The lens barrel assembly wherein the wide actuator and the teleactuator are piezo actuators. a first lens driving unit including a bobbin having a lens barrel assembly installed therein, a first coil installed on an outer circumferential surface thereof, and a housing supporting magnets disposed around the bobbin;
A base spaced apart from the bobbin and the first lens driving unit by a predetermined distance, a support member supplying power to the first coil, a second coil disposed to face the magnet of the first lens driving unit, and the housing a second lens driving unit having a circuit board including a motion detection sensor;
a wide barrel accommodating at least one lens and having a first wide angle;
a telebarrel disposed at a predetermined distance from the wide barrel, accommodating at least one lens, and having a second wide angle smaller than the first wide angle; and
An assembly base accommodating the wide barrel and the telebarrel; includes,
The wide barrel and the telebarrel are each independently tiltable at a predetermined angle,
The assembly base,
a wide actuator tilting the wide barrel; and
A lens driving device comprising: a tele actuator for tilting the telebarrel independently with respect to the wide barrel. delete According to claim 8,
The wide actuator is disposed on a lower surface of the wide barrel, and the teleactuator is disposed on a lower surface of the telebarrel. According to claim 8,
The lens driving device wherein the wide actuator and the teleactuator have a volume variable according to a voltage. image sensor;
a printed circuit board on which the image sensor is mounted;
a first lens driving unit including a bobbin having a lens barrel assembly installed therein, a first coil installed on an outer circumferential surface thereof, and a housing supporting magnets disposed around the bobbin;
Movements of a base spaced apart from the bobbin and the first lens driving unit by a predetermined distance, a support member supplying power to the first coil, a second coil disposed to face the magnet of the first lens driving unit, and a housing a second lens driving unit having a circuit board including a detection sensor for detecting;
a wide barrel accommodating at least one lens and having a first wide angle;
a telebarrel disposed at a predetermined distance from the wide barrel, accommodating at least one lens, and having a second wide angle smaller than the first wide angle; and
An assembly base accommodating the wide barrel and the telebarrel; includes,
The wide barrel and the telebarrel each include a lens driving device provided to be capable of tilting at a predetermined angle independently,
The assembly base,
a wide actuator for tilting the wide barrel; and
A camera module comprising: a teleactuator for tilting the telebarrel independently with respect to the widebarrel. delete

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