Lens driving device and camera module and optical apparatus comprising the same

Abstract

The present disclosure relates to a lens driving apparatus and a camera module and an optical device including the same. One embodiment includes a housing including an upper surface, a lower surface, an inner surface, and an outer surface located on a side opposite the inner surface; a bobbin accommodated in the housing; a first coil provided at an outer surface of the bobbin; a first magnet provided at an outer surface of the housing; a second magnet provided in the housing to be spaced apart from the first magnet; and a first position sensor provided at an outer surface of the bobbin, wherein a first portion of the housing is located between the second magnet and the inner surface of the housing.

Description

[0001] This application is a divisional application of PCT patent application No. 201680055365.1 (based on its previously filed divisional application: 202110785916.2), filed on July 25, 2016, entitled "Lens Driving Device and Camera Module and Optical Device Including the Device". Technical Field

[0002] The embodiments relate to a lens moving device, and to a camera module and optical device, each including the lens moving device. Background Technology

[0003] The technology of voice coil motors (VCMs) used in existing conventional camera modules is difficult to apply to miniature, low-power camera modules, so research related to the above situation has been actively carried out.

[0004] When a camera module is configured to be installed in a small electronic product such as a smartphone, the camera module may frequently receive vibrations during use and may be subjected to minute vibrations due to, for example, the shaking of the user's hand. In view of this fact, there is a need to develop technology that can be used to additionally install a device to prevent hand shakiness in the camera module. Summary of the Invention

[0005] Technical issues

[0006] The embodiment provides a lens moving device that can suppress lens defocusing caused by changes in ambient temperature and easily perform calibration for autofocus feedback drive.

[0007] Solution

[0008] A lens moving device according to one embodiment includes: a housing including an upper surface, a lower surface, an inner peripheral surface, and an outer peripheral surface positioned opposite to the inner peripheral surface; a coil holder disposed in the housing; a first coil disposed on the outer peripheral surface of the coil holder; a first magnet disposed on the outer peripheral surface of the housing; a second magnet disposed on the housing spaced apart from the first magnet; and a first position sensor disposed on the outer peripheral surface of the coil holder, wherein a first portion of the housing is located between the second magnet and the inner peripheral surface of the housing.

[0009] The housing may have a first magnet base on its upper part, a second magnet mounted on the first magnet base, and a first part of the housing may be located between the second magnet mounted on the first magnet base and the inner circumferential surface of the housing.

[0010] The second magnet, mounted on the first magnet base, can be exposed from the outer peripheral surface of the housing.

[0011] The second magnet, mounted on the first magnet base, can be exposed from the outer peripheral surface and the top surface of the housing.

[0012] The second part of the housing may be located between the second magnet mounted on the first magnet base and the outer peripheral surface of the housing, and the thickness of the first part of the housing may be greater than the thickness of the second part of the housing.

[0013] The first magnet base can be recessed from the outer peripheral surface and the upper surface of the housing.

[0014] The third part of the housing can be located between the second magnet mounted on the first magnet base and the upper surface of the housing, and the thickness of the first part of the housing can be greater than the thickness of the third part of the housing.

[0015] The second magnet, mounted on the first magnet base, can be exposed from the upper surface of the housing.

[0016] The lens moving device may also include an adhesive member disposed between the first magnet base and the second magnet.

[0017] As the temperature rises, the first part of the housing can expand, and the distance between the second magnet and the first position sensor can thus increase.

[0018] According to another embodiment, a lens moving device includes: a housing including a cavity and a plurality of first sides; a coil holder disposed in the cavity of the housing; a first coil disposed on an outer peripheral surface of the coil holder; a first magnet disposed on the plurality of first sides of the housing; a second magnet disposed on one of the plurality of first sides spaced apart from the first magnet; and a first position sensor disposed on the outer peripheral surface of the coil holder, wherein the intersection of a first curve and a second curve is located in the third quadrant of an xy coordinate system, wherein the first curve is a curve representing the output value of the first position sensor corresponding to the strength of the magnetic field detected by the first position sensor at a first temperature, and the second curve is a curve representing the output value of the first position sensor corresponding to the strength of the magnetic field detected by the first position sensor at a second temperature.

[0019] The first temperature can be 25°C, and the second temperature can be higher than 25°C but lower than 65°C.

[0020] The output range of the first position sensor within the movable travel range of the coil frame can be included in a first region, wherein the first region is a region that includes values ​​equal to or higher than a first reference value, the first reference value being the output of the first position sensor at the intersection.

[0021] The output range of the first position sensor within the movable travel range of the coil frame can be included in a first region, wherein the first region is a region above a first reference value, the first reference value being the output of the first position sensor at the intersection.

[0022] The output range of the first position sensor within the movable travel range of the coil frame can be a portion of the first region located in the first quadrant.

[0023] The output value of the first position sensor can decrease as the temperature increases.

[0024] The intersection point can be separated from the origin of the xy coordinate system and the x-axis and y-axis.

[0025] A camera module according to one embodiment includes: a lens barrel; a lens moving device for moving the lens barrel; and an image sensor for converting an image incident through the lens moving device into an electrical signal.

[0026] An optical device according to one embodiment includes: a display module including a plurality of pixels that change color in response to an electrical signal; a camera module for converting an image incident through a lens into an electrical signal; and a controller for performing motion control of the display module and the camera module.

[0027] Beneficial effects

[0028] The implementation method can suppress lens defocusing caused by changes in ambient temperature and easily perform calibration for autofocus feedback drive. Attached Figure Description

[0029] Figure 1 This is a perspective view showing a lens moving device according to one embodiment;

[0030] Figure 2 yes Figure 1 An exploded perspective view of the lens moving device shown in the figure;

[0031] Figure 3 It is shown Figure 1 The image shows an assembled perspective view of the lens moving device, in which the cover component has been removed;

[0032] Figure 4 yes Figure 2 An exploded perspective view of the coil frame, first coil, first magnet, second magnet, first position sensor, and sensor board shown in the figure;

[0033] Figure 5A shows Figure 4 The plan view of the coil frame and the second magnet shown in the figure;

[0034] Figure 5B shows... Figure 4An exploded perspective view of the sensor board and the first position sensor shown in the figure;

[0035] Figure 5C shows... Figure 4 The rear perspective view of the embodiment of the sensor board shown in the figure;

[0036] Figure 6 yes Figure 1 The top perspective view of the casing is shown in the figure;

[0037] Figure 7 yes Figure 2 An exploded perspective view of the bottom of the housing, the first magnet, and the second magnet is shown in the figure;

[0038] Figure 8 It is along Figure 3 The cross-sectional view obtained from line I-I' in the diagram;

[0039] Figure 9 It is shown Figure 2 The diagram shows a planar perspective view of the connection state of the coil frame, housing, upper elastic member, first position sensor, sensor plate, and multiple support members.

[0040] Figure 10 It is shown Figure 2 The bottom perspective view shows the connection state of the coil frame, housing, lower elastic member and multiple support members.

[0041] Figure 11 It is shown Figure 2 The figure shows an assembled perspective view of the upper elastic member, lower elastic member, first position sensor, sensor plate, base, support member and circuit board.

[0042] Figure 12 It is shown Figure 1 An exploded perspective view of the base, second coil, and circuit board is shown in the figure.

[0043] Figure 13 The output of the autofocus position sensor is shown based on the movement of the movable unit;

[0044] Figure 14 This shows the change in the output of the autofocus sensor based on ambient temperature;

[0045] Figure 15 An example is shown of how the output of a first position sensor mounted on a housing and coil holder changes due to variations in ambient temperature.

[0046] Figure 16 A first embodiment is shown, illustrating the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0047] Figure 17 Showing changes based on ambient temperature Figure 16 The relative positional relationships between the first position sensor, the second magnet, the first magnet, and the first coil are shown in the diagram.

[0048] Figure 18 A second embodiment is shown, illustrating the relative positional relationship between the first position sensor, the second magnet, and the first coil;

[0049] Figure 19 A third embodiment illustrates the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0050] Figure 20 Another embodiment is shown, illustrating the variation in the output of a first position sensor mounted on a housing according to changes in ambient temperature;

[0051] Figure 21 A fourth embodiment illustrates the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0052] Figure 22 Showing the changes according to temperature Figure 21 The relative positional relationships between the first position sensor, the second magnet, the first magnet, and the first coil are shown in the diagram.

[0053] Figure 23 A fifth embodiment illustrates the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0054] Figure 24 A sixth embodiment illustrates the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0055] Figure 25 A seventh embodiment illustrates the relative positional relationship between a first position sensor, a second magnet, and a first coil;

[0056] Figure 26 An eighth embodiment illustrates the relative positional relationships between a first position sensor, a second magnet, and a first coil;

[0057] Figure 27 This is an exploded perspective view of the camera module according to the implementation method;

[0058] Figure 28 This is a perspective view showing a portable terminal according to one embodiment; and

[0059] Figure 29 It is shown Figure 28The image shows a view of the configuration of the portable terminal. Detailed Implementation

[0060] These embodiments will become clear in the following description by reference to the accompanying drawings. In the following description of the embodiments, it will be understood that when an element such as a layer (film), region, pattern, or structure is referred to as being "above" or "below" another element, the element may be located "directly" above or below the other element, or it may be formed "indirectly," and intermediary elements may also be present. Furthermore, it will be understood that the criteria for "above" or "below" are determined based on the accompanying drawings.

[0061] In the accompanying drawings, for clarity and convenience of description, the dimensions of layers are enlarged, omitted, or shown schematically. Furthermore, the actual dimensions of each component are not fully represented. Wherever possible, the same reference numerals will be used in all drawings to indicate the same or similar parts.

[0062] In the following description, the lens moving device according to the embodiment will be described with reference to the accompanying drawings. For ease of description, although a Cartesian coordinate system (x, y, z) is used to describe the lens moving device, other coordinate systems may also be used, and the embodiment is not limited to this. In the corresponding drawings, the X-axis and Y-axis represent directions perpendicular to the optical axis, i.e., the Z-axis, and the direction of the optical axis (Z-axis) may be referred to as the "first direction," the direction of the X-axis may be referred to as the "second direction," and the direction of the Y-axis may be referred to as the "third direction."

[0063] A "shake correction device" applied to a miniature camera module in a mobile device such as a smartphone or tablet can be a device configured to prevent the outline of the captured image from becoming blurred due to vibrations caused by the user's hand shaking when capturing a still image.

[0064] Furthermore, an "autofocus device" is a device that automatically focuses an image of an object onto the surface of an image sensor. Shake correction devices and autofocus devices can be constructed in various ways, and the lens moving device according to an embodiment can move an optical module consisting of at least one lens in a first direction parallel to the optical axis, or move the optical module relative to a plane defined by a second direction and a third direction perpendicular to the first direction, thereby performing shake correction movement and / or autofocus.

[0065] Figure 1 This is a schematic perspective view showing a lens moving device according to one embodiment, and Figure 2 yes Figure 1 An exploded perspective view of the lens moving device is shown in the figure.

[0066] Reference Figure 1 and Figure 2 The lens moving device according to the embodiment may include a cover member 300, an upper elastic member 150, a sensor plate 180, a first position sensor 170, a first coil 120, a coil frame 110, a housing 140, a first magnet 130, a second magnet 190, a lower elastic member 160, a plurality of support members 220, a circuit board 250, and a base 210.

[0067] The lens moving device according to the embodiment may further include a second coil 230, which interacts with the first magnet 130 to perform hand tremor correction.

[0068] The lens moving device according to the embodiment may further include a second position sensor 240 for detecting the strength of the magnetic field of the first magnet 130 for hand shaking correction.

[0069] First, the cover component 300 will be described.

[0070] The cover member 300, together with the base 210, defines an accommodating space such that the upper elastic member 150, the coil frame 110, the first coil 120, the housing 140, the second magnet 190, the first magnet 130, the lower elastic member 160, the support member 220, the second coil 230, and the circuit board 250 are accommodated in the accommodating space.

[0071] The cover member 300 may be in the form of a box, having an open bottom and including a top end and side walls. The bottom of the cover member 300 may be attached to the top of the base 210. The top end of the cover member 300 may have a polygonal shape, such as a square or an octagon.

[0072] The cover member 300 may have a hole formed in its upper end to expose a lens (not shown) connected to the coil holder 110 to external light. Furthermore, the hole in the cover member 300 may be provided with a window formed of a light-transmitting material to prevent impurities such as dust or moisture from entering the camera module.

[0073] Although the material of the cover member 300 can be a non-magnetic material such as SUS to prevent the cover member 300 from being attracted by the first magnet 130, the cover member 300 can also be formed of a magnetic material and can act as a yoke.

[0074] Figure 3 It shows the removal Figure 1 A three-dimensional view of the assembled lens moving device after the cover component 300, and... Figure 4 yes Figure 2The exploded perspective view shows the coil frame 110, the first coil 120, the second magnet 190, the first magnets 130-1 to 130-4, the first position sensor 170, and the sensor plate 180.

[0075] Next, the coil holder 110 will be described.

[0076] Reference Figure 3 and Figure 4 The coil holder 110 is placed inside the housing 140 and is movable in the optical axis direction or in a first direction parallel to the optical axis, such as the Z-axis direction, by the electromagnetic interaction between the first coil 120 and the first magnet 130.

[0077] Although the lens can be directly mounted on the coil holder, this disclosure is not limited thereto.

[0078] Although not shown, the coil holder 110 may include a lens barrel (not shown) in which at least one lens is mounted. The lens barrel may be connected to the inside of the coil holder 110 in various ways.

[0079] The coil holder 110 can be configured to have a hole for mounting a lens or lens barrel. The hole can be circular, elliptical, or polygonal in shape, but is not limited to these.

[0080] The coil holder 110 may include a first protrusion 111 and a second protrusion 112.

[0081] The first protrusion 111 of the coil holder 110 may include a guide 111a and a first stop 111b.

[0082] The guide portion 111a of the coil holder 110 can be used to guide the position to which the upper elastic member 150 is installed. For example, as Figure 3 As exemplarily shown, the guide portion 111a of the coil frame 110 can guide the path along which the first frame connector 153 of the upper elastic member 150 extends.

[0083] For example, multiple guide portions 111a may protrude along a second direction and a third direction perpendicular to the first direction. Furthermore, the guide portions 111a may be arranged in a centrally symmetrical pattern with respect to a plane defined by the x-axis and y-axis, as shown in the figure, or, unlike the embodiment shown in the figures, may be arranged in a non-centrally symmetrical pattern without obstructing other components.

[0084] The second protrusion 112 of the coil holder 110 can be formed to protrude along a second direction and a third direction perpendicular to the first direction. In addition, the second protrusion 112 of the coil holder 110 can have an upper surface 112a, which has a shape for mounting the first inner frame 151 thereon.

[0085] The first stop 111b of the first protrusion 111 of the coil holder 110 and the second protrusion 112 of the coil holder 110 can be used to prevent the bottom surface of the body of the coil holder 110 from directly colliding with the upper surface of the circuit board 250 and the base 210, even if the coil holder 110 moves beyond a specified range due to external vibration, for example, when it moves in a first direction parallel to the optical axis and in a direction parallel to the first direction for autofocusing.

[0086] The coil holder 110 may have a support groove 114 disposed between the inner peripheral surface 110a and the outer peripheral surface of the coil holder 110 to allow the sensor plate 180 to be inserted into the coil holder 110 in a first direction. For example, the support groove 114 in the coil holder 110 may be disposed between the inner peripheral surface 110a of the coil holder 110 and a first protrusion 111 and a second protrusion 112 to enable the sensor plate 180 to be inserted in the first direction. Furthermore, the support groove 114 of the coil holder 110 may be configured to have an annular shape defined between the inner peripheral surface 110a and the outer peripheral surface of the coil holder 110.

[0087] The coil holder 110 may have a receiving recess 116 in which a first position sensor 170, which is disposed, connected, or mounted on a sensor plate 180, is received or disposed.

[0088] For example, the receiving recess 116 of the coil holder 110 may be provided in the space between the first protrusion 111 and the second protrusion 112 of the coil holder 110 to allow the first position sensor 170 mounted on the sensor plate 180 to be inserted in the first direction.

[0089] The coil holder 110 may have a support protrusion 117 formed on the lower surface of the coil holder 110 (see...). Figure 8 ), to be connected and fixed to the lower elastic member 160.

[0090] When the lower surfaces of the first protrusion 111 and the second protrusion 112 of the coil holder 110 are in contact with the bottom surface 146a of the first mounting groove 146, the autofocus function can be controlled in a manner similar to the unidirectional control in a conventional voice coil motor (VCM). Specifically, the coil holder 100 can be raised when current is supplied to the first coil 120 and lowered when the current supply to the first coil 120 is cut off, thereby performing the autofocus function.

[0091] However, when the lower surfaces of the first protrusion 111 and the second protrusion 112 of the coil holder 110 are spaced a predetermined distance from the bottom surface 146a of the first mounting groove 146, the initial position of the coil holder 110 is set, the autofocus function can be controlled according to the direction of the current, as in the bidirectional control of a conventional voice coil motor. Specifically, the autofocus function can also be achieved by moving the coil holder 110 in a vertical direction parallel to the optical axis. For example, when a positive current is applied, the coil holder 110 can be moved upward, and when a reverse current is applied, the coil holder 110 can be moved downward.

[0092] Next, the first coil 120 will be described.

[0093] The first coil 120 is disposed on the outer peripheral surface 110b of the coil holder 110. The first coil 120 can be positioned so as not to overlap with the first position sensor 170 in a second direction or a third direction perpendicular to the first direction.

[0094] To ensure that the first coil 120 and the first position sensor 170 do not interfere with or overlap each other in the second or third direction, the first coil 120 and the first position sensor 170 may be located on the outer peripheral surface of the coil holder 110 so as to be spaced apart from each other. For example, the first coil 120 may be located on the lower side or lower part of the outer peripheral surface of the coil holder 110, and the first position sensor 170 may be located on the upper side of the first coil 120.

[0095] like Figure 4 As exemplarily shown, the first coil 120 may be wound around the outer peripheral surface of the coil holder 110 in the direction along which the first coil 120 rotates about the optical axis.

[0096] like Figure 8 As exemplarily shown, the first coil 120 may be assembled, disposed or fixed in a groove 118 formed in the outer peripheral surface of the coil holder 110.

[0097] exist Figure 4 Although the first coil 120 may be located directly on the outer peripheral surface of the coil holder 110, this disclosure is not limited thereto. In another example, the first coil 120 may be wound around the coil holder 110 via a coil loop, or it may be configured as an angled annular coil assembly. In this case, the coil loop may be connected to the coil holder 110 in the same manner as the sensor plate 180 is fitted into the support slot 114 in the coil holder 110.

[0098] like Figure 2As shown, the first coil 120 can be configured to have an octagonal shape. This is because the shape of the first coil 120 is configured to correspond to the shape of the outer peripheral surface of the octagonal coil frame 110 shown in FIG. 5A.

[0099] At least four sides of the first coil 120 can be configured to have a linear shape, and the corners between the four sides can also be configured to have a linear shape. However, the aforementioned sides and corners can also be configured to have an arc shape.

[0100] When current is supplied to the first coil 120, electromagnetic force is generated through the electromagnetic interaction between the first coil 120 and the magnet 130, thereby moving the coil frame 110 in the first direction or in a direction parallel to the first direction using electromagnetic force.

[0101] The first coil 120 can be configured to correspond to the first magnet 130. When the first magnet 130 is composed of a single body such that the surfaces of the first magnet 130 facing the first coil 120 have the same polarity, the surfaces of the first coil 120 facing the first magnet 130 can also be configured to have the same polarity.

[0102] If the first magnet 130 is divided into two or four segments by a plane perpendicular to the optical axis, such that the surface of the first magnet 130 facing the first coil 120 is correspondingly divided into two or more surfaces, then the first coil 120 can also be divided into several coil segments corresponding to the number of segments of the first magnet.

[0103] Next, the first position sensor 170 and the sensor board 180 will be described.

[0104] The first position sensor 170 can be set, connected, or mounted on the coil holder 110 so that it can move together with the coil holder 110.

[0105] When the coil holder 110 moves along the first direction, the first position sensor 170 can move along with the coil holder 110. The first position sensor 170 can detect the sum of the magnetic field strengths of the second magnet 190 and the first magnet 130 based on the movement of the coil holder 110, and can generate an output signal based on the detected result. The displacement of the coil holder 110 in the optical axis direction or the first direction can be controlled using the output signal from the first position sensor 170.

[0106] The first position sensor 170 can be electrically connected to the sensor board 180. The first position sensor 170 can take the form of a driver that includes a Hall sensor, or it can take the form of a separate position detection sensor such as a Hall sensor.

[0107] The first position sensor 170 can be set, connected or mounted on the coil frame 110 in various forms, and can receive current in various ways depending on the setting, connection or mounting method of the first position sensor 170.

[0108] The first position sensor 170 can be set, connected, or mounted on the outer peripheral surface of the coil holder 110.

[0109] For example, the first position sensor 170 may be disposed, connected, or mounted on the sensor plate 180, and the sensor plate 180 may be disposed or connected to the outer peripheral surface of the coil holder 110. In other words, the first position sensor 170 may be indirectly disposed, connected, or mounted on the coil holder 110 via the sensor plate 180.

[0110] The first position sensor 170 may be electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160. For example, the first position sensor 170 may be electrically connected to the upper elastic member 150.

[0111] Figure 5A shows Figure 4 The diagram shows a plan view of the coil frame 110 and the first magnets 130 (130-1, 130-2, 130-3, and 130-4). Figure 5B is a plan view showing... Figure 4 An exploded perspective view of the sensor plate 180 and the first position sensor 170 shown. Figure 5C is an exploded perspective view of the sensor plate 180 and the first position sensor 170 shown. Figure 4 The rear perspective view of the sensor board 180 according to the embodiment is shown.

[0112] Reference Figure 4 As shown in Figure 5A, the sensor plate 180 can be mounted on the coil holder 110 and can be moved together with the coil holder 110 along the optical axis or in a direction parallel to the optical axis.

[0113] For example, the sensor board 180 can be connected to the coil frame 110 by being mounted or disposed in the support slot 114 in the coil frame 110. It is sufficient for the sensor board 180 to simply be mounted on the coil frame 110. Although Figure 4 A sensor plate 180 with an annular shape is shown, but the present disclosure is not limited thereto.

[0114] The first position sensor 170 can be attached to and supported by the front surface of the sensor plate 180 using adhesive components such as epoxy resin or double-sided tape.

[0115] The outer peripheral surface of the coil holder 110 may include a first side surface S1 and a second side surface S2. The first side surface S1 corresponds to a first side portion 141 of the housing 140, on which the first magnet 130 is disposed. The second side surface S2 is located between the first side surfaces S1 so as to be interconnected with the first side surfaces S1.

[0116] The first position sensor 170 can be disposed on any of the first side surfaces S1 of the coil holder 110. For example, the recess 116 in the coil holder 110 can be disposed in any of the first side surfaces S1 of the coil holder 110, and the first position sensor 170 can be located in the recess 116 in the coil holder 110.

[0117] Referring to FIG5B, the first position sensor 170 may be disposed, connected or mounted to the upper, middle or lower part of the outer peripheral surface of the sensor plate 180 in various ways.

[0118] For example, the first position sensor 170 can be disposed on any one of the upper, middle, and lower parts of the outer peripheral surface of the sensor plate 180, so that the coil holder 110 is positioned or oriented along a first direction in the space between the second magnet 190 and the first magnet 130 at its initial position. The first position sensor 170 can receive current from the outside through the circuitry of the sensor plate 180.

[0119] The first position sensor 170 can be positioned, coupled, or mounted on the upper part of the outer peripheral surface of the sensor plate 180 in such a way that it is located along a first direction from the initial position of the coil frame 110 or arranged in the space between the second magnet 190 and the first magnet 130.

[0120] The first position sensor 170 can be disposed on the upper part A1 of the outer peripheral surface of the sensor plate 180 so as to be positioned as far away from the first coil 120 as possible, so that the first position sensor 170 is not affected by the magnetic field generated by the first coil 120, thereby preventing the first position sensor 170 from malfunctioning or erroneous.

[0121] As shown in FIG5B, for example, sensor plate 180 may have a mounting recess 183 formed in the upper part of the outer peripheral surface of sensor plate 180, and the first position sensor 170 may be disposed, coupled or mounted in the mounting recess 183 in sensor plate 180.

[0122] To allow for more efficient injection of epoxy resin or the like used to assemble the first position sensor 170, an inclined surface (not shown) may be provided at at least one surface of the mounting recess 183 of the sensor plate 180. Although additional epoxy resin or the like may not be injected into the mounting recess 183 in the sensor plate 180, injecting epoxy resin or the like into the mounting recess 183 can increase the force used to set, connect, or mount the first position sensor 170.

[0123] The sensor board 180 may include a body 182, elastic member contacts 184-1 to 184-4, and circuit patterns L1 to L4.

[0124] When the support groove 114 in the coil frame 110 has the same shape as the outer peripheral surface of the coil frame 1100, the body 182 of the sensor plate 180 assembled in the support groove 114 of the coil frame 110 can have a shape that allows it to be assembled into and fixed in the groove 114.

[0125] Although Figure 3 As shown in Figure 5A, the support groove 114 in the coil holder 110 and the body 182 of the sensor plate 180 may have a circular shape when viewed in a plan view, but this disclosure is not limited thereto. In another embodiment, the support groove 114 in the coil holder 110 and the body 182 of the sensor plate 180 may have a polygonal shape when viewed in a plan view.

[0126] Referring to FIG5B, the body 182 of the sensor plate 180 may include a first section 182a and a second section 182b. The first position sensor 170 is set, connected or mounted on the first section 182a, and the second section 182b extends from the first section 182a and is assembled into the support groove 114 in the coil frame 110.

[0127] Although the sensor plate 180 may have an opening 181 in its portion facing the first section 182a for easy mounting into the support slot 114 in the coil holder 110, this disclosure is not limited to any particular structure of the sensor plate 180.

[0128] The elastic member contact portions 184-1 to 184-4 of the sensor plate 180 may protrude from the body 182 of the sensor plate 180, for example, along the optical axis or a first direction, and the contact portions may contact the first inner frame 151 along the optical axis or the first direction.

[0129] The elastic member contact portions 184-1 to 184-4 of the sensor plate 180 can be connected to the first inner frame 151 of the upper elastic member 150.

[0130] The circuit patterns L1 to L4 of the sensor board 180 can be formed on the body 182 of the sensor board 180, and the first position sensor 170 and the elastic member contact portions 184-1 to 184-4 can be electrically connected to each other.

[0131] The first position sensor 170 can be implemented as a Hall sensor, for example, but it can also be implemented as any sensor as long as it can detect electric field strength. If the first position sensor 170 is implemented as a Hall sensor, the Hall sensor may include multiple pins.

[0132] For example, multiple pins may include input pins P11 and P12 and output pins P21 and P22. The signals output through output pins P21 and P22 can be current-type or voltage-type signals.

[0133] The input pins P11 and P12 and the output pins P21 and P22 of the first position sensor 170 can be electrically connected to the corresponding elastic member contacts 184-1 to 184-4 via circuit patterns L1 to L4.

[0134] For example, referring to FIG5C, the first line L1 of the circuit pattern can conductively connect the first pin P11 to the fourth elastic member contact 184-4, and the second line L2 of the circuit pattern can conductively connect the second input pin P12 to the third elastic member contact 184-3. Furthermore, the third line L3 of the circuit pattern can conductively connect the first output pin P21 to the first elastic member contact 184-1, and the fourth line L4 of the circuit pattern can conductively connect the second output pin P22 to the second elastic member contact 184-2.

[0135] In one embodiment, the first line L1 to the fourth line L4 can be formed to be visible to the naked eye. In another embodiment, the first line L1 to the fourth line L4 can be formed in the body 182 of the sensor board 180 to be invisible to the naked eye.

[0136] Next, the housing 140 will be described.

[0137] The housing 140 can support the second magnet 190 for detection and the first magnet 130 for driving, and the housing 140 can accommodate the coil holder 110 therein so that the coil holder 110 is allowed to move in a first direction parallel to the optical axis.

[0138] The housing 140 may typically have a hollow cylindrical shape. For example, the housing 140 may have a polygonal (e.g., square or octagonal) or circular hole 201. For example, the housing 140 may include an upper surface, a lower surface, an inner peripheral surface, and an outer peripheral surface, and the coil holder 110 may be disposed in a space defined in the housing 140.

[0139] Figure 6 yes Figure 2 The top perspective view of the housing 140 shown. Figure 7 yes Figure 2 An exploded perspective view of the bottom of the housing 140, the second magnet 190, and the first magnet 130 shown. Figure 8 It is along Figure 3 The cross-sectional view obtained from line I-I' in the diagram. Figure 9 yes Figure 2 The top perspective view shows the connection state of the coil frame 110, housing 140, upper elastic member 150, first position sensor 170, sensor plate 180 and support member 220. Figure 10 yes Figure 2 The bottom perspective view shows the connection state of the coil frame 110, housing 140, lower elastic member 160 and support member 220.

[0140] The housing 140 may have a first mounting groove 146 formed at a position on the housing 140 corresponding to the first protrusion 111 and the second protrusion 112 of the coil holder 110.

[0141] The housing 140 may include a third protrusion 148 corresponding to the space defined between the first protrusion 111 and the second protrusion 112, and having a first width W1.

[0142] The third protrusion 148 of the housing 140, opposite the coil holder 110, may have a surface with the same shape as the side portion of the coil holder 110. Here, in the location as in... Figure 4 The first width W1 between the first protrusion 111 and the second protrusion 112 of the coil holder 110 shown is as follows: Figure 4 A predetermined difference may exist between the second width W2 of the third protrusion 148 of the housing 140 shown. Therefore, rotation of the third protrusion 148 between the first protrusion 111 and the second protrusion 112 of the coil holder 110 can be restricted. Thus, the third protrusion 148 of the housing 140 can prevent rotation of the coil holder 110, even if the coil holder 110 is subjected to a force along the direction of rotation of the coil holder 110 about the optical axis, rather than in the direction of rotation of the optical axis.

[0143] For example, such as Figure 6 and Figure 7As exemplarily shown, the upper edge of the outer periphery of the housing 140 may have a square planar shape, while the lower edge of the inner periphery may have an octagonal planar shape. The housing 140 may include a plurality of sides. For example, the housing 140 may include four first sides 141 and four second sides 142, and the width of each of the first sides 141 may be greater than the width of each of the second sides 142.

[0144] The first side 141 of the housing 140 may correspond to the portion on which the first magnet 130 is mounted. Each of the second side 142 of the housing 140 may be disposed between two adjacent first side 141s and may correspond to the portion on which the support member 220 is provided. Each of the first side 141s of the housing 140 may connect two adjacent second side 142s of the housing 140 and may have a flat surface of a predetermined depth.

[0145] Each of the first side portions 141 of the housing 140 may have a surface area equal to or greater than the surface area of ​​the first magnet 130 corresponding to the first side portion 141.

[0146] The housing 140 may have a first magnet seat 141b for accommodating the second magnet 190 and a second magnet seat 141a for accommodating the first magnets 130-1 to 130-4.

[0147] For example, the housing 140 may have a first magnet seat 141b and a second magnet seat 141a, the first magnet seat 141b being formed in the upper end of the exterior of the first side portion 141, and the second magnet seat 141a being formed in the lower end of the interior of the first side portion 141.

[0148] The first magnet base 141b can be located above the second magnet base 141a.

[0149] For example, the first magnet base 141b may be spaced apart from the second magnet base 141a, and a detailed description thereof will be given later.

[0150] The second magnet 190 can be assembled and fixed to the first magnet base 141b, and each of the first magnets 130-1 to 130-4 can be fixed to the second magnet base 141a, which is disposed on a corresponding first side of the first side 141 of the housing 140.

[0151] The second magnet base 141a of the housing 140 can be configured to have a recess with a size corresponding to that of the first magnet 130, and the second magnet base 141a can be configured to have at least three surfaces facing the first magnet 130, namely, the two lateral side surfaces and the top surface of the first magnet 130.

[0152] An opening may be formed in the bottom surface of the second magnet base 141a of the housing 140, that is, the surface opposite to the second coil 230 which will be described later, and the bottom surface of the first magnet 130 placed on the second magnet base 141a may directly face the second coil 230.

[0153] The first magnet 130 and the second magnet 190 can be fixed to the first magnet base 141b and the second magnet base 141a of the housing 140 using an adhesive, but are not limited to an adhesive, and can also use an adhesive component, such as a piece of double-sided tape.

[0154] Alternatively, the first magnet holder 141b and the second magnet holder 141a of the housing 140 can be configured as mounting holes instead of being configured as shown in Figure 6 and Figure 7 The recess shown in the diagram, the mounting hole allows the first magnet 130 and the second magnet 190 to be partially fitted into or partially exposed from the first magnet base 141b and the second magnet base 141a.

[0155] For example, the second magnet 190 may be located above one of the first magnets 130-1, 130-2, 130-3, and 130-4 (e.g., 130-1). The second magnet 190 may be spaced apart from the first magnet (e.g., 130-1). A first side portion of the housing 140 may be partially disposed between the second magnet 190 and the first magnet (e.g., 130-1).

[0156] The first side portion 141 of the housing 140 can be oriented parallel to the side surface of the cover member 300. Furthermore, the first side portion 141 of the housing 140 can be larger than the second side portion 142. The second side portion 142 of the housing 140 can be provided with a path through which the support member 220 extends. A first through hole 147 can be formed in the upper part of the second side portion 142 of the housing 140. The support member 220 can be connected to the upper elastic member 150 through the first through hole 147.

[0157] In addition, to prevent the housing 140 from directly contacting Figure 1 The inner side of the cover member 300 shown collided, and the housing 140 may be provided with a second stop 144 at its upper end.

[0158] The housing 140 may include at least one first upper support protrusion 143, which is formed on the upper surface of the housing 140 and is used for connection of the upper elastic member 150.

[0159] For example, a first upper support protrusion 143 of the housing 140 may be formed on the upper surface of the housing 140 corresponding to the second side portion 142 of the housing 140. As shown, the first upper support protrusion 143 of the housing 140 may have a hemispherical shape, or it may have a cylindrical shape or a prism shape, but is not limited thereto.

[0160] The housing 140 may have a second lower support protrusion 145, which is formed on the lower surface of the housing 140 for connection and fixation of the lower elastic member 160.

[0161] To define the path of the channel for supporting member 220 and to ensure that the space is filled with gel-type silicone as a damper, housing 140 may have a first recess 142a formed in the second side portion 142. In other words, the first recess 142a of housing 140 may be filled with damping silicone.

[0162] The housing 140 may have a plurality of third stops 149 protruding from the side 141 of the housing 140. The third stops 149 are used to prevent the housing 140 from colliding with the cover member 300 when the housing 140 moves in the second and third directions.

[0163] To prevent the bottom surface of housing 140 from colliding with base 210 and / or circuit board 250, which will be described below, housing 140 may also have a fourth stop (not shown) protruding from the bottom surface of housing 140. With this configuration, housing 140 can be spaced apart from base 210 disposed below it and from cover member 300 disposed above it, such that housing 140 can be held in a predetermined position in the optical axis direction without interference between them. In this way, housing 140 can perform displacement operations in a plane perpendicular to the optical axis along a second and a third direction—that is, the front-back direction and the lateral direction.

[0164] Next, the second magnet 190 and the first magnet 130 will be described.

[0165] The first magnet 130 can be arranged on the second magnet base 141a of the housing 140 to overlap with the first coil 120 in a direction perpendicular to the optical axis.

[0166] In another embodiment, the first magnet 130 and the second magnet 190 may be disposed on the outside or inside of the first side 141 of the housing 140, or on the inside or outside of the second side 142 of the housing 140.

[0167] In another embodiment, the second magnet 190 may be housed inside the first side portion 141 of the housing 140, and the first magnet 130 may be housed outside the first side portion 141 of the housing 140.

[0168] The first magnet 130 may have a form corresponding to the first side 141 of the housing 140, that is, an approximately cuboid form. The surface of the first magnet 130 facing the first coil 120 may have a radius of curvature corresponding to the radius of curvature of the first coil 120.

[0169] The first magnet 130 can be constructed as a single body. In an embodiment, referring to FIG5A, the first magnet 130 can be oriented such that the surface of the first magnet 130 facing the first coil 120 is the S pole 132 and the opposite surface is the N pole 134, but is not limited thereto, and the opposite configuration is also possible.

[0170] At least two first magnets 130 may be provided, and in this embodiment, four first magnets 130 may be installed. The first magnets 130 may have an approximately rectangular shape as shown in FIG. 5A, or they may have a triangular or rhomboid shape.

[0171] While the surface of the first magnet 130 facing the first coil 120 may be linear, this disclosure is not limited thereto. When the corresponding surface of the first coil 120 is curved, the surface of the first magnet 130 facing the first coil 120 may be curved to have a radius of curvature corresponding to the surface of the first coil 120.

[0172] This configuration allows the distance between the first magnet 130 and the first coil 120 to remain constant. In one embodiment, the four first sides 141 of the housing 140 may be respectively provided with the first magnets 130-1, 130-2, 130-3, and 130-4, but are not limited thereto. In some designs, only one of the first magnet 130 and the first coil 120 may have a flat surface, while the other may have a curved surface. Optionally, both the first coil 120 and the first magnet 130 facing each other may have curved surfaces. In this case, the surface of the first coil 120 may have the same radius of curvature as the surface of the first magnet 130.

[0173] When the first magnet 130 has a rectangular flat surface as shown in FIG. 5A, a pair of magnets among the plurality of first magnets 130 can be arranged parallel to each other in a second direction, and other pairs of magnets can be arranged parallel to each other in a third direction. With the aid of this arrangement, the movement of the housing 140 for shaky correction can be controlled, as will be described below.

[0174] Next, the upper elastic member 150, the lower elastic member 160, and the support member 220 will be described.

[0175] The upper elastic member 150 and the lower elastic member 160 elastically support the coil holder 110. The support member 220 can support the housing 140 so that it is movable relative to the base 210 in a direction perpendicular to the optical axis, and at least one of the upper elastic member 150 and the lower elastic member 160 can be electrically connected to the circuit board 250.

[0176] The upper elastic member 150 can be connected to the upper end (or upper surface) of the coil frame 110 and the upper end (or upper surface) of the housing 140, and the lower elastic member 160 can be connected to the lower end (or lower surface) of the coil frame 110 and the lower end (or lower surface) of the housing 140.

[0177] Figure 11 It is shown in Figure 2 The figure shows an assembled perspective view of the upper elastic member 150, the lower elastic member 160, the first position sensor 170, the sensor plate 180, the base 210, the support member 220, and the circuit board 250.

[0178] The upper elastic member 150 may include a plurality of upper elastic members 150-1 to 150-4, which are electrically separated from and spaced apart from each other.

[0179] The elastic member contact portions 184-1 to 184-4 of the sensor plate 180 can be electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160.

[0180] For example, although Figure 11 Electrical contact between the elastic member contact portions 184-1 to 184-4 and the upper elastic members 150-1 to 150-4 is shown, but the present disclosure is not limited thereto. In another embodiment, the elastic member contact portions 184-1 to 184-4 may be in electrical contact with the lower elastic member 160, or may be in electrical contact with both the upper elastic member 150 and the lower elastic member 160.

[0181] Each of the contact portions 184-1 to 184-4 of the elastic members electrically connected to the first position sensor 170 can be electrically connected to a corresponding one of the upper elastic members 150-1 to 150-4. Each of the upper elastic members 150-1 to 150-4 can be electrically connected to a corresponding one of the support members 220-1 to 220-4.

[0182] Each of the first upper elastic member 150-1 and the third upper elastic member 150-3 150a may include a first inner frame 151, a first outer frame 152a and a first frame connector 153.

[0183] Each of the second upper elastic member 150-2 and the fourth upper elastic member 150-4 150b may include a first inner frame 151, a first outer frame 152b and a first frame connector 153.

[0184] The first inner frame 151 of the first upper elastic member 150-1 to the fourth upper elastic member 150-4 can be connected to the coil frame 110 and one of the corresponding elastic member contact portions 184-1 to 184-4.

[0185] like Figure 4 As shown, when the upper surface 112a of the second protrusion 112 of the coil holder 110 is flat, the first inner frame 151 of the upper elastic member 150 can be placed on the upper surface 112a of the second protrusion 112 of the coil holder 110 and can be fixed to the upper surface 112a using an adhesive member.

[0186] The first outer frames 152a and 152b can be connected to the housing 140 and to the support member 220. The first frame connector 153 of each of the upper elastic members 150-1 to 150-4 can connect the first inner frame 151 to the first outer frames 152a and 152b.

[0187] Although the first outer frame 152b can be formed by bisecting the first outer frame 152a, this disclosure is not limited thereto. In another embodiment, the first outer frame 152a can be bisected into a shape having the same shape as the first outer frame 152b.

[0188] The first frame connector 153 can be bent at least once to form a predetermined pattern. The upward and / or downward movement of the coil holder 110 in a first direction parallel to the optical axis can be elastically supported by the positional variation and slight deformation of the first frame connector 153.

[0189] Figure 11 The first outer frame 152a or 152b of the upper elastic member 150 shown can be connected and fixed to the housing 140 via the first upper support protrusion 143. In this embodiment, each of the first outer frames 152a and 152b may be formed with a second second through hole 157, the second second through hole 157 having a shape and position corresponding to the shape and position of the first upper support protrusion 143. Here, the first upper support protrusion 143 and the second second through hole 157 can be fixed to each other by heat fusion or by using an adhesive such as epoxy resin.

[0190] Through the conductive connection between the elastic member contact portions 184-1 to 184-4 of the sensor plate 180 and the first upper elastic member 150-1 to the fourth upper elastic member 150-4, the four pins P11 to P22 of the first position sensor 170 can be conductively connected to the first upper elastic member 150-1 to the fourth upper elastic member 150-4.

[0191] The corresponding first upper elastic member 150-1 to fourth upper elastic member 150-4 can be connected to the circuit board 250 via support members 220-1 to 220-4. That is, the first upper elastic member 150-1 can be electrically connected to the circuit board 250 via at least one of the first first support member 220-1a and the second first support member 220-1b, and the second upper elastic member 150-2 can be electrically connected to the circuit board 250 via the second support member 220-2. The third upper elastic member 150-3 can be electrically connected to the circuit board 250 via at least one of the first third support member 220-3a and the second third support member 220-3b, and the fourth upper elastic member 150-4 can be electrically connected to the circuit board 250 via the fourth support member 220-4.

[0192] The first position sensor 170 can receive drive signals, such as first and second electrical currents with different polarities, from the circuit board 250 via two of the first upper elastic members 150-1 to the fourth upper elastic members 150-4 (e.g., 150-1 and 150-2) and support members connected to the upper elastic members (e.g., 220-1 and 220-2). The first position sensor 170 can output its output signal to the circuit board 250 via the remaining two of the first upper elastic members 150-1 to the fourth upper elastic members 150-4 (e.g., 150-3 and 150-4) and support members connected to the upper elastic members (e.g., 220-3 and 220-4).

[0193] Meanwhile, the lower elastic member 160 may include a first lower elastic member 160-1 and a second lower elastic member 160-2, which are electrically separated from and spaced apart from each other. The first coil 120 can be connected to the support members 220-5 and 220-6 through the first lower elastic member 160-1 and the second lower elastic member 160-2.

[0194] Each of the first lower elastic member 160-1 and the second lower elastic member 160-2 may include at least one second inner frame 161-1 or 161-2, at least one second outer frame 162-1 or 162-2, and at least one second frame connector 163-1 or 163-2.

[0195] The second inner frame 161-1 and the second inner frame 161-2 can be connected to the coil holder 110, and the second outer frame 162-1 and the second outer frame 162-2 can be connected to the housing 140. A first second frame connector 163-1 can connect the second inner frame 161-1 and the second outer frame 162-1 to each other, a second second frame connector 163-2 can connect the second inner frame 161-2 and the second outer frame 162-2 to each other, and a third second frame connector 163-3 can connect the second inner frame 161-2 and the second outer frame 162-2 to each other.

[0196] The first lower elastic member 160-1 may further include a first coil frame 164-1, and the second lower elastic member 160-2 may further include a second coil frame 164-2.

[0197] Reference Figure 11 Each of the first coil frame 164-1 and the second coil frame 164-2 of the lower elastic member 160 can be connected to a corresponding one of the two ends of the first coil 120 via a conductive connection member such as solder. The first lower elastic member 160-1 and the second lower elastic member 160-2 can receive drive signals (e.g., drive current) from the circuit board 250 and can transmit first and second electrical currents of different polarities to the first coil 120.

[0198] Each of the first lower elastic member 160-1 and the second lower elastic member 160-2 may further include a fourth second frame connector 163-4. The fourth second frame connector 163-4 can connect the coil frame 164 to the second inner frame 161-2.

[0199] At least one of the first to fourth second frame connectors 163-1 and 163-4 can be bent once or multiple times to define a predetermined pattern. In particular, the coil holder 110 can be elastically supported for upward and / or downward movement in a first direction parallel to the optical axis by means of positional variations and minor deformations of the first and third second frame connectors 163-1 and 163-3.

[0200] In one embodiment, each of the first lower elastic member 160-1 and the second lower elastic member 160-2 may further include a bend 165. The bend 165 may be bent toward the upper elastic member 150 in a first direction at the second second frame connector 163-2.

[0201] The upper elastic member 160 may further include a fifth upper elastic member 150-5 and a sixth upper elastic member 150-6. The first upper elastic member 150-1 to the sixth upper elastic member 150-6 may be electrically separated and spaced apart from each other.

[0202] Each of the fifth upper elastic member 150-5 and the sixth upper elastic member 150-6 may include a connecting frame 154 and an outer frame 155.

[0203] The connecting frame 154 can be connected to the bending portion 165 and can extend in the first direction. The outer frame 155 can be bent at the connecting frame 154 in a direction perpendicular to the first direction and can be connected to the housing 155. The outer frame 155 can be connected to the support members 220-5 and 220-6. In other words, the fifth upper elastic member 150-5 can be connected to the fifth support member 220-5, and the sixth upper elastic member 150-6 can be connected to the sixth support member 220-6. Here, the bending portion 165 of each of the first lower elastic member 160-1 and the second lower elastic member 160-2 can be integrally formed with the connecting frame 154 of the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6 and the outer frame 155. Each of the first lower elastic member 160-1 and the second lower elastic member 160-2, as well as the fifth upper elastic member 150-5 and the sixth upper elastic member 150-6, can include portions 165 and 154 that are bent in the first direction.

[0204] The first lower elastic member 160-1 and the second lower elastic member 160-2 can receive power from the circuit board 250 via the fifth upper elastic member 150-5 and the sixth upper elastic member 150-6 connected to the support members 220-5 and 220-6, and can transmit power to the first coil 120. Specifically, the first lower elastic member 160-1 can be connected to the circuit board 250 via the sixth upper elastic member 150-6 and the sixth support member 220-6, and the second lower elastic member 160-2 can be connected to the circuit board 250 via the fifth upper elastic member 150-5 and the fifth support member 220-5.

[0205] Although each of the upper elastic member 150 and the lower elastic member 160 in this embodiment is divided into two or more parts, in another embodiment, each of the upper elastic member 150 and the lower elastic member 160 may not be divided.

[0206] The second support protrusion 117 of the coil frame 110 can connect and fix the second inner frame 161-1 or 161-2 of the lower elastic member 160 to the coil frame 110. The second lower support protrusion 145 of the housing 140 can connect and fix the second outer frame 162-1 or 162-2 of the lower elastic member 160 to the housing 140.

[0207] Each of the second inner frames 161-1 and 161-2 of the first lower elastic member 160-1 and the second lower elastic member 160-2 may be provided with a third through hole 161a, which is formed at a position corresponding to the first lower support protrusion 117 of the coil frame 110 so as to have a shape corresponding to the first lower support protrusion 117 of the coil frame 110. Here, the first lower support protrusion 117 of the coil frame 110 and the third through hole 161a can be fixed to each other by heat fusion or by using an adhesive member such as epoxy resin.

[0208] Each of the second outer frames 162-1 and 162-2 of the first lower elastic member 160-1 and the second lower elastic member 160-2 may be provided with a fourth through hole 162a at a position corresponding to the second lower support protrusion 145 of the housing 140. Here, the second lower support protrusion 145 and the fourth through hole 162a of the housing 140 may be fixed to each other by heat fusion or by using an adhesive member such as epoxy resin.

[0209] Although each of the upper elastic member 150 and the lower elastic member 160 may be made of a leaf spring, this disclosure is not limited to the materials used for the upper elastic member 150 and the lower elastic members 160.

[0210] Power can be supplied to the first position sensor 170 via two upper elastic members (e.g., 150-1 and 150-2) that are electrically separated from each other. The signal output from the first position sensor 170 can be transmitted to the circuit board 250 via two other upper elastic members (e.g., 150-3 and 150-4) that are electrically separated from each other. Power can also be supplied to the first coil 120 via two lower elastic members 160-1 and 160-2 that are electrically separated from each other. However, this disclosure is not limited thereto.

[0211] In another embodiment, the functions of the upper elastic members 150-1 to 150-4 and the lower elastic members 160-1 to 160-4 can be interchanged. Specifically, in yet another embodiment, the lower elastic members may include four lower elastic members that are electrically separated from each other. Here, power can be supplied to the first coil 120 via two upper elastic members, power can be supplied to the first position sensor 170 via two lower elastic members, and the signal output from the first position sensor 170 can be transmitted to the circuit board 250 via the other two lower elastic members that are electrically separated from each other. Although this arrangement is not shown in the drawings, it will be apparent from the drawings.

[0212] To suppress vibration or oscillation of the coil frame 110 caused by shock or vibration, a damper may be provided in at least one of the spaces between the upper elastic member 150 and the coil frame, between the upper elastic member 150 and the housing 140, between the lower elastic member 160 and the coil frame 110, and between the lower elastic member 160 and the housing 140. The damper may be made of a sol-gel type material such as epoxy resin.

[0213] Next, the support member 220 will be described.

[0214] Multiple support members 220-1 to 220-6 may be provided at the respective second side 142. For example, two support members may be provided at each of the four second side 142.

[0215] In another embodiment, only one support member may be provided at each of two of the four second sides 142 of the housing 140, and two support members may be provided at each of the other two sides 142.

[0216] In another embodiment, the support member 220 may be provided in the form of a leaf spring on the first side of the housing 140.

[0217] As described above, the support member 220 can form the path through which the power required for the first position sensor 170 and the first coil 120 is transmitted, and can also form the path through which the signal output from the first position sensor 170 is provided to the circuit board 250.

[0218] The support member 220 can be implemented as a component for elastic support, such as a leaf spring, a coil spring, a suspension wire, etc. In another embodiment, the support member 220 can be integrally formed with the upper elastic member.

[0219] Next, the base 210, the circuit board 250, and the second coil 230 will be described.

[0220] The base 210 may have holes corresponding to the holes in the coil holder 110 and / or the holes in the housing 140, and may have a shape corresponding to the shape of the cover member 300, such as a square shape.

[0221] Figure 12 Is Figure 1 An exploded perspective view of the base 210, the second coil 230, and the circuit board 250 shown in the figure.

[0222] The base 210 may have a stepped portion 211 to which adhesive can be applied when the cover member 300 is fixed to the base 210 using adhesive. Here, the stepped portion 211 can guide the cover member 300 to be attached to the upper side of the stepped portion 211 and can be attached to the end of the cover member 300 in a surface contact manner.

[0223] The stepped portion 211 of the base 210 and the end of the cover member 300 can be attached to or fixed to each other, for example, with an adhesive.

[0224] The base 210 may have a support portion 255 of a corresponding size on its surface facing the terminal 251 of the circuit board 250. The support portion 255 of the base 210 may be formed on the outer surface of the base 210 without the step portion 211, and may support the terminal rib 253 of the circuit board 250.

[0225] The second recess 212 may be formed in each corner of the base 210. When the cover member 300 has a protrusion formed at each corner, the protrusion of the cover member 300 may be fitted into the second recess 212 in the base 210.

[0226] Furthermore, mounting recesses 215-1 and 215-2 may be formed in the upper surface of the base 210, allowing the second position sensor 240 to be disposed in each of the mounting recesses 215-1 and 215-2. In an embodiment, the base 210 may be provided with two mounting recesses 215-1 and 215-2, wherein the second position sensor 240 may be disposed to detect the degree of upward movement of the housing 140 in a second direction and a third direction. For example, although the angle between the imaginary line—which connects the center of the mounting recesses 215-1 and 215-2 to the center of the base 1210—is limited to 90°, this disclosure is not limited thereto.

[0227] The mounting recesses 215-1 and 215-2 in the base 210 can be located at or near the center of the corresponding second coil 230, or the center of the second coil 230 can coincide with the center of the second position sensor 240.

[0228] The second coil 230 can be disposed above the circuit board 250, and the second position sensor 240 can be disposed below the circuit board 250. The second position sensor 240 can detect the displacement of the housing 140 relative to the base 210 in a direction perpendicular to the optical axis (i.e., the z-axis) (X-axis or y-axis direction).

[0229] The second position sensor 240 may include two sensors 240a and 240b, which are disposed at the base 210 to detect the displacement of the housing 140 in a direction perpendicular to the optical axis.

[0230] The circuit board 250 may be disposed on the upper surface of the base 210 and may have holes corresponding to the holes in the coil holder 110, the housing 140, and / or the base 210. The outer peripheral surface of the circuit board 250 may have a shape that coincides with or corresponds to the upper surface of the base 210, such as a square.

[0231] The circuit board 250 may include at least one terminal rib 253, which is bent at its upper surface and provided with a plurality of terminals or pins 251 for receiving electrical signals from the outside.

[0232] exist Figure 12 In this embodiment, the second coil 230 is implemented on a circuit component 231 separate from the circuit board 250, but is not limited thereto. In another embodiment, the second coil 230 may take the form of a toroidal coil assembly, an FP coil, or a circuit pattern formed on the circuit board 250.

[0233] The second coil 230 may have a through-hole 230a formed in the circuit member 231. The support member 220 may extend through the through-hole 230a to be electrically connected to the circuit board 250.

[0234] The second coil 230 is located above the circuit board 250 so as to be opposite the first magnet 130 fixed to the housing 140.

[0235] Although four second coils 230 may be mounted on the four sides of the circuit board 250, this disclosure is not limited thereto, and only two second coils may be mounted in the second direction and the third direction respectively, or four or more second coils may be mounted.

[0236] The housing 140 can be moved upward in a second direction and / or a third direction by the interaction of the first magnet 130 and the second coil 230 arranged opposite each other as described above, thereby performing hand shaking correction.

[0237] The second position sensor 240 can be implemented as a Hall sensor, or any other sensor can be used as long as it can detect the strength of the magnetic field. For example, the second position sensor 240 can take the form of an actuator that includes a Hall sensor, or it can be implemented as a standalone position detection sensor such as, for example, a Hall sensor.

[0238] Multiple terminals 251 can be mounted on the terminal ribs 253 of the circuit board 250. For example, the circuit board 250 can receive external power through the multiple terminals 251 mounted on the terminal ribs 253, and can supply power to the first coil 120 and the second coil 230, as well as the first position sensor 170 and the second position sensor 240. The circuit board 250 can output signals received from the first position sensor 170 and the second position sensor 240.

[0239] In embodiments, although the circuit board 250 may be implemented as a flexible printed circuit board (FPCB), this disclosure is not limited thereto. The terminals 251 of the circuit board 250 may be formed directly on the surface of the base 210, for example, via a surface electrode process.

[0240] The circuit board 250 may have through holes 250a1 and 250a2, through which a support member 220 extends. The support member 220 may be electrically connected to a corresponding circuit pattern formed on the bottom surface of the circuit board 250 via soldering or the like. In another embodiment, the circuit board 250 may not have through holes 250a1 and 250a2, and the support member 220 may be electrically connected to a corresponding circuit pattern formed on the upper surface of the circuit board 250 via soldering or the like.

[0241] The circuit board 250 may also have a through hole 250b, which is connected to the upper support protrusion 217 of the base 210. For example... Figure 11 As shown, the upper support protrusion 217 of the base 210 and the through hole 250b of the circuit board 250 can be connected to each other and can be fixed to each other by an adhesive member such as epoxy resin.

[0242] Figure 13 The output of the autofocus position sensor is shown based on the movement of the movable unit.

[0243] The horizontal axis (x-axis) represents the distance the movable unit moves, and the vertical axis (y-axis) represents the output of the autofocus position sensor. The unit for the horizontal axis can be mm, and the unit for the vertical axis can be mV.

[0244] G1 represents the output of the autofocus position sensor when only the drive magnet is present and there is no detection magnet, while G2 represents the output of the autofocus position sensor when both a drive magnet and a detection magnet spaced apart from the drive magnet are present. In the case of G2, the distance between the drive magnet and the detection magnet can be 0.03 mm.

[0245] Reference Figure 13 It will be noted that, due to magnetic flux saturation at the upper part of the G1 curve, the linearity of the autofocus position sensor output relative to the movement distance of the movable unit is poor. Meanwhile, it will be noted that, since the distance between the detection magnet and the drive magnet is constant, and the autofocus sensor is positioned in the space between the detection magnet and the drive magnet, the G2 curve exhibits good linearity over a wide range.

[0246] Figure 14 This shows the change in the output of the autofocus sensor based on ambient temperature.

[0247] exist Figure 14 In this system, the horizontal axis represents the strength of the magnetic field, the magnitude of the current, or the amount of displacement, and the vertical axis represents the output of the autofocus position sensor. For example, in an xy coordinate system with the origin (0,0) as the reference point, the x-axis represents the strength of the magnetic field, and the y-axis represents the output of the autofocus position sensor. Here, reference point 15 could be a point where the output of the autofocus position sensor is zero. For example, the ambient temperature could be the temperature experienced by the position sensor due to heat generated when using a mobile phone or camera module.

[0248] In the attached diagram, f1 represents the output of the autofocus position sensor when the ambient temperature is 25°C, and f2 represents the output of the autofocus position sensor when the ambient temperature is 65°C.

[0249] Reference Figure 14 The output of the autofocus position sensor is proportional to the strength of the magnetic field and decreases as the ambient temperature increases. For example, under conditions of a magnetic flux of 50 mT, an input current of 5 mA for the autofocus position sensor, and an ambient temperature ranging from 25°C to 125°C, the output of the autofocus position sensor can decrease by -0.06% / °C.

[0250] like Figure 14 As shown, note that the slope of the curve representing the output of the autofocus position sensor based on the strength of the magnetic field decreases as the ambient temperature increases. For example, when the ambient temperature is above 25°C but below 65°C, the curve representing the output of the autofocus position sensor based on the strength of the magnetic field may have a slope that is higher than f2 but lower than f1.

[0251] Because the output of the autofocus position sensor varies with ambient temperature, the lens mounted on the lens moving device may become out of focus when autofocus feedback is applied. For example, due to autofocus feedback, the lens mounted on the lens moving device may have a first focal point at 25°C, but a second focal point different from the first focal point at 65°C. This is because the output of the autofocus sensor at 65°C is lower than the output of the autofocus position sensor at 25°C, and the lens mounted on the lens moving device is displaced by autofocus feedback based on the reduced output of the autofocus position sensor.

[0252] The focal length of the lens mounted on the lens moving device and the output of the autofocus position sensor are affected by changes in ambient temperature. For example, when the temperature of the movable unit or the ambient temperature rises, the lens mounted on the lens moving device may expand, and therefore the focal length of the lens may increase.

[0253] By taking into account both the changes in the output of the autofocus sensor due to changes in ambient temperature and the changes in the focal length of the lens due to changes in ambient temperature, lens defocusing caused by changes in ambient temperature can be suppressed.

[0254] For example, by automatically controlling the changes in the output of the autofocus position sensor to compensate for changes in the focal length of the lens caused by changes in ambient temperature, defocusing of the lens mounted on the lens moving device caused by changes in ambient temperature can be suppressed.

[0255] The lens moving device may be equipped with a first lens, the focal length of which increases with increasing ambient temperature. When the first lens is mounted on the lens moving device, in... Figure 14 The first region within the first quadrant of the xy-coordinate plane shown can be selected as the region for using a voice coil motor (VCM). Here, the first quadrant can be a region where both the x and y coordinates are positive, and the third quadrant can be a region where both the x and y coordinates are negative. In other words, the output range of the autofocus position sensor used for autofocus feedback drive is controlled within the first region 11.

[0256] The reason for choosing quadrant 11 as the region for using a voice coil motor (VCM) is as follows.

[0257] First, since the outputs of the autofocus position sensor in the first quadrant and the autofocus position sensor in the third quadrant move in opposite directions according to changes in ambient temperature, the accuracy and reliability of the autofocus drive may be reduced if both the first and third quadrants are used as the control area for the autofocus drive.

[0258] Secondly, due to the first and second reasons below, the focus of the first lens mounted on the lens moving device is automatically corrected during autofocus feedback actuation. The first reason is the decrease in the output of the autofocus position sensor in the first quadrant caused by increased ambient temperature, resulting in displacement of the first lens due to autofocus feedback actuation. The second reason is the increase in the focal length of the first lens caused by increased ambient temperature.

[0259] The first region 11 excludes neither the origin (0,0) nor the coordinates on the x and y axes that define the first quadrant. This is to compensate for the change in the focal length of the first lens caused by the second reason.

[0260] However, when only the first region 11 in the first quadrant is selected as the region for using the voice coil motor (VCM), the linear portion of the magnetic field strength detected by the autofocus position sensor can be shortened, and calibration for autofocus feedback drive may not be easy. For example, calibration can be a series of procedures or processes performed to amplify the output of the position sensor in order to adjust the output to the voltage range used in a device with a lens moving mechanism.

[0261] For example, the output level of the first position sensor 170 is lower than the grayscale voltage corresponding to the digital code used to control the current of the first coil 120. Therefore, in order to reflect the output of the first position sensor 170 to the digital code used to control the autofocus feedback control of the current of the first coil 120, the output of the first position sensor 170 must be amplified to the range of the grayscale voltage. However, when the output range of the first position sensor 170 is limited to the first region 11, the calibration process using amplified output can be complex.

[0262] When a second lens with a focal length that decreases as ambient temperature increases is installed, the lens moving device can select a region in the third quadrant of the xy coordinate system as the region for using a voice coil motor (VCM).

[0263] To facilitate the calibration process, the implementation method will be... Figure 14 The intersection point 15 shown in the figure moved to Figure 15 The first intersection point 15a shown is or Figure 20 The second intersection point 15b is shown, and as... Figure 15 and Figure 20 The output range of the first position sensor 170 used for autofocus feedback drive is expanded.

[0264] Figure 15 An example is shown of the change in the output of the first position sensor 170 mounted on the housing 140 and coil holder 110 due to changes in ambient temperature.

[0265] exist Figure 15 In the diagram, the horizontal axis represents the strength of the magnetic field, the magnitude of the current applied to the first coil 120, or the amount of displacement, and the vertical axis represents the output of the first position sensor 170. For example, in an xy coordinate system with the origin (0,0) as the reference point, the x-axis represents the strength of the magnetic field, and the y-axis represents the output of the first position sensor 170.

[0266] The first graph (f1) indicates the output of the first position sensor 170 corresponding to the strength of the magnetic field detected by the first position sensor 170 when the ambient temperature is a first temperature, and the second graph (f2') indicates the output of the first position sensor 170 corresponding to the strength of the magnetic field detected by the first position sensor 170 when the ambient temperature is a second temperature. The first temperature can be between 15°C and 25°C, and the second temperature can be higher than 25°C but lower than 65°C. For example, in Figure 15 In this context, the first temperature can be 15℃, and the second temperature can be 65℃.

[0267] The reference point (0,0) can be the point where the output of the first position sensor 170 is zero. For example, the output of the first position sensor 170 corresponding to the strength of the magnetic field can be linear, and the slopes of the first curve (f1) and the second curve (f2) can be constant.

[0268] Reference Figure 15 In order to facilitate the calibration of the autofocus feedback drive, the first intersection point 15a between the first curve (f1) and the second curve (f2') can be located in the third quadrant, and the output of the first position sensor 170 used for the autofocus feedback drive can be controlled within the first region 13.

[0269] For example, the output range of the first position sensor 170 within the movable travel range of the coil holder 110 may fall within the first region 13. Although the first region 13 may be a region including values ​​equal to or higher than the first reference value, this disclosure is not limited thereto. For example, the first reference value may be the output of the first position sensor 170 at the first intersection 15a.

[0270] For example, Figure 15 The first region 13 may include a first intersection point 15a, which may be equal to or higher than the first reference value, and may be a region that spans between the first quadrant and the third quadrant.

[0271] Typically, although calibration varies depending on the amplified characteristic value amplified by the driver performing calibration processing, calibration can be controlled by adjusting the driver's offset and amplification. Since the driver's offset increases with the driver's amplification, the amplification of the position sensor's output, obtained based on the amplification setting, must fall within the voltage range used in the device equipped with the lens movement mechanism.

[0272] exist Figure 14 In the diagram, the intersection point 15 between f1 and f2 is the origin (0,0), and the first region 11 is located in the first quadrant. Meanwhile, in... Figure 15 In order to facilitate the calibration of autofocus feedback drive, the first intersection point 15a between f1 and f2' can be located in the third quadrant, and the first region 13 has a lower limit value at the first intersection point 15a in the third quadrant and an upper limit value in the first quadrant.

[0273] The position of the first intersection point 15a in the third quadrant can be determined by the ambient temperature and the degree of expansion of the shell 140 due to temperature changes. For example, when the ambient temperature and the degree of expansion of the shell 140 due to temperature changes increase, the first intersection point 15a may become farther away from the origin (0,0).

[0274] For example, when the bias drive current of the first position sensor 1700 is 1 [mA], the output of the first position sensor 170 at the first intersection 15a can be lower than -10mV.

[0275] The output range of the first position sensor 170, corresponding to the travel range of the autofocus movable unit, can be within the first region 13.

[0276] exist Figure 15 Throughout the entire first region 13, as the ambient temperature rises, the output of the first position sensor 170 can be reduced for the same magnetic field strength.

[0277] Even if the curve representing the output of the first position sensor 170 corresponding to temperature changes is as follows: Figure 15 As shown, the range of output values ​​of the first position sensor 170 used for actual autofocus feedback drive falls entirely within the first region 13. The first region 13 can be represented as the output of the position sensor relative to the entire travel of the movable unit (e.g., coil holder 110) during autofocus drive.

[0278] For example, the range of output values ​​of the first position sensor 170 used for autofocus feedback drive can be the same as that of the first region 13. The range of output values ​​of the first position sensor 170 used for autofocus feedback drive can include the output value at the first intersection 15a.

[0279] although Figure 14 The output value of the autofocus position sensor shown is only positive, but the output value of the first position sensor 170 can have both positive and negative values, and the positive output value of the first position sensor 170 can be greater than the absolute value of its negative output value. The range of the output value of the first position sensor 170 used for autofocus feedback drive can be from the lower limit of the first intersection point 15a to the upper limit of the first quadrant. For example, the first intersection point 15a can be positioned spaced apart from the origin (0,0), the x-axis, and the y-axis.

[0280] In another embodiment, the range of the output value of the first position sensor 170 within the movable travel range of the coil frame 110 may not include the first intersection point 15a. For example, the range of the output value of the first position sensor 170 within the movable travel range of the coil frame 110 may fall within a first region. Here, the first region may include a range larger than the range of the output value of the first position sensor 170 at the first intersection point 15a.

[0281] In another embodiment, the range of the output value of the first position sensor 170 within the movable travel range of the coil frame 110 can be a portion of the first region 13 in the first quadrant.

[0282] The reason is that the deviation in the output value of the first position sensor 170 caused by temperature changes is... Figure 15 The area near the first intersection point 15a is small, so it cannot adequately compensate for the focal length change of the first lens caused by temperature changes. Therefore, by setting the portion of the first region 13 in the first quadrant as the output range of the first position sensor 170 within the movable travel range of the coil frame 110, the deviation of the output value of the first sensor 170 caused by temperature changes increases in this portion, which can adequately compensate for the focal length change of the first lens caused by temperature changes.

[0283] When the range of the output value of the first position sensor 170 used for autofocus feedback drive does not include the first intersection point 15a, the first intersection point 15a may be the intersection point between the extensions of the curves representing the output of the first position sensor 170 according to temperature changes.

[0284] The area using a voice coil motor (VCM) falls into Figure 15 The reason for the first area 13 is to make it easy to execute. Figure 14 The two tasks described herein and the autofocus feedback-driven calibration.

[0285] In order to make the output range of the first position sensor 170 used for autofocus feedback drive fall within the first region 13, this embodiment may have the following structure: the first magnet 130 and the second magnet 190 are spaced apart from the housing 140, the first position sensor 170 is disposed in the space between the first magnet 130 used for driving and the second magnet 190 used for detection, and the distance between the second magnet 190 and the first position sensor 170 and the distance between the first magnet 130 and the second magnet 190 change according to the change of ambient temperature.

[0286] The first position sensor 170 can detect the sum of the magnetic field strength of the first magnet 130 and the magnetic field strength of the second magnet 190.

[0287] Figure 16 A first embodiment showing the relative positional relationship between a first position sensor 170, a second magnet 190, a first magnet 130, and a first coil 120.

[0288] Reference Figure 16 The first coil 120 can be disposed on the lower side of the outer peripheral surface of the coil holder 110, and the first position sensor 170 can be disposed on the outer peripheral surface of the coil holder 110 above the first coil 120 and spaced apart from the first coil 120.

[0289] The first magnet 130 can be mounted on the housing 140 so as to face the first coil 120.

[0290] When the coil holder 110 is in the initial position, the movable unit, such as the first magnet 130, can be configured to face or be aligned with the first coil 120 in a direction perpendicular to the first direction.

[0291] The first magnet 130 may be a unipolar magnetized magnet with different polarities on its inner and outer sides. The boundary plane between the S and N poles of the first magnet 130 may be parallel to the direction along which the first magnet 130 and the first coil 120 face each other. For example, the boundary plane between the S and N poles of the first magnet 130 may be oriented parallel to a first direction parallel to the optical axis.

[0292] For example, although the first magnet 130 may be disposed on the housing 140 such that the surface of the first magnet 130 facing the first coil 120 is the S pole and its opposite surface is the N pole, this disclosure is not limited thereto, and the opposite arrangement is also possible.

[0293] The second magnet 190 may be disposed on the housing 140 or mounted on the housing 140 to be positioned above the first magnet 130. The second magnet 190 may be a unipolar magnet having an N pole and a S pole.

[0294] The boundary plane between the S pole and N pole of the second magnet 190 disposed on the housing 140 may be parallel to the boundary plane between the S pole and N pole of the first magnet 130, but is not limited thereto. Although the second magnet 190 may be disposed on the housing 140, the surface of the second magnet 190 facing the outer peripheral surface of the coil frame 110 is the N pole and its opposite surface is the S pole, but this disclosure is not limited thereto.

[0295] Although the second magnet 190 may have a smaller size than the first magnet 130, this disclosure is not limited thereto.

[0296] The second magnet 190 may be positioned above the first magnet 130 and spaced apart from it. For example, the second magnet 190 may at least partially overlap with the first magnet 130 in a first direction, but is not limited thereto.

[0297] For example, housing 140 may include an inner peripheral surface 22, an outer peripheral surface 21 positioned opposite to the inner peripheral surface 22, an upper surface 23, and a lower surface 24.

[0298] The first portion Q1 of the housing 140 may be located between the second magnet 190 and the inner peripheral surface 22 of the housing 140. The upper part of the second magnet 190 may protrude from the upper surface 23 of the housing 140, and one side surface of the second magnet 190 may protrude from the outer peripheral surface 21 of the housing 140. For example, the outer peripheral surface 21 of the housing 140 may be the outer peripheral surface of the first side portion 141 of the housing 140.

[0299] For example, the upper ends of the N pole and the upper ends of the S pole of the second magnet 190 can be exposed from the upper surface 23 of the housing 140, and one side surface of the S pole of the second magnet 190 can be exposed from the outer peripheral surface 21 of the housing 140.

[0300] The first magnet base 141b may be disposed in the upper end of the housing 140 to have a recessed shape including a bottom surface and a side surface, and may have a first opening and a second opening, the first opening being at the upper surface 230 of the housing 140 and the second opening being at the outer peripheral surface 21 of the housing 140.

[0301] The first portion Q1 of the housing 140 may be disposed between the second magnet 190 mounted on the housing 140 and the inner peripheral surface 22 of the housing 140. For example, the first portion Q1 of the housing 140 may be disposed between the first magnet seat 141b and the inner peripheral surface 22 of the housing 140.

[0302] When the coil holder 110 is in the initial position, the first position sensor 170 can be disposed on the outer peripheral surface of the coil holder 110 to be positioned in a first direction in or aligned with the space between the first magnet 130 and the second magnet 190.

[0303] For example, due to the electromagnetic interaction between the first coil 120 and the first magnet 130, the movable unit of the lens moving device can move from the initial position along the +z axis or the -z axis.

[0304] The movable unit may be an autofocus movable unit. The autofocus movable unit may include a coil holder 110 and components mounted on and moving with the coil holder 110. For example, the autofocus movable unit may include at least a coil holder 110 and a lens (not shown) mounted on the coil holder 110. In some embodiments, the movable unit may also include at least one of a first coil 120 and a first position sensor 170.

[0305] The initial position can be the initial position of the movable unit when no power is supplied to the first coil 120, or the initial position can be the position in which the movable unit is positioned when the upper elastic member 150 and the lower elastic member 160 undergo elastic deformation solely by the weight of the movable unit. In the initial position, the movable unit, such as the coil holder 110, can be spaced apart from the stationary unit, such as the housing 140, by means of the upper elastic member 150 and the lower elastic member 160.

[0306] For example, at the initial position, the first position sensor 170 may not overlap with the second magnet 190 or the first magnet 130 in a direction perpendicular to the first direction, but is not limited thereto.

[0307] In another embodiment, the first position sensor 170 in the initial position may partially overlap with the second magnet 190 or the first magnet 130 in a direction perpendicular to the first direction.

[0308] The detection section 170s (Hall element) of the first position sensor 170 can be positioned to face the outer peripheral surface of the coil frame 110. For example, the detection section 170s of the first position sensor 170 can be configured to detect the strength of the magnetic field in which magnetic field lines extend from the inner peripheral surface of the coil frame 110 to the outer peripheral surface.

[0309] For example, at the initial position, the detection part 170s of the first position sensor 170 can be disposed on the outer peripheral surface of the coil frame 110 to be positioned in or aligned with the space between the first magnet 130 and the second magnet 190 in a first direction.

[0310] For example, at the initial position, the detection part 170s of the first position sensor 170 may not overlap with the second magnet 190 or the first magnet 130 in a direction perpendicular to the first direction.

[0311] like Figure 16 As shown, an adhesive member 195 may be disposed between the second magnet 190 and the housing 140 to secure the second magnet 190 to the housing 140. For example, the adhesive member 195 may be disposed between the second magnet 190 and the first magnet base 141b. For example, the adhesive member 195 may be disposed between the first magnet base 141b and the side and bottom surfaces of the magnet 190.

[0312] exist Figure 16 In this configuration, when the ambient temperature is a first temperature (e.g., 25°C), the thickness of the adhesive member 195 can be t1, and the thickness of the first portion Q1 of the housing 140 can be t2. The distance between one end of the second magnet 190 and one end of the first position sensor 170 can be d1.

[0313] Figure 17 Showing changes based on ambient temperature Figure 16 The relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120 is shown.

[0314] Reference Figure 17 When the ambient temperature is a second temperature (e.g., 65°C), the adhesive member 195 and the housing 140 may expand. Specifically, when the ambient temperature rises to the second temperature (e.g., 65°C), the thickness of the adhesive member 195 may be t1' (>t1), the thickness of the first portion Q1' of the housing 140 may be t2' (>t2), and the distance between one end of the second magnet 190 and one end of the first position sensor 170 may be d2 (>d1). For example, when the ambient temperature rises from 25°C, the expansion of the housing 140 may be from 5 μm to 10 μm.

[0315] As the ambient temperature rises, the distance between the second magnet 190 and the first position sensor 170, as well as the distance between the second magnet 190 and the first magnet 130, increases. Therefore, this embodiment has the effect of reducing the output of the first position sensor 170. Figure 15 As shown, there is an effect that moves the position of the first intersection point 15a to the third quadrant.

[0316] Figure 18 A second embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120. Figure 17In the accompanying drawings, the same reference numerals indicate the same parts, and the description of the same parts is simplified or omitted.

[0317] Reference Figure 18 The second magnet 190 can be spaced apart from both the inner and outer peripheral surfaces 21 of the housing 140.

[0318] The first part Q11 of the housing 140 is located between the second magnet 190 and the inner peripheral surface 22 of the housing 140, and the second part Q2 of the housing 140 is located between the second magnet 190 and the outer peripheral surface 21 of the housing 140.

[0319] Only the upper part of the second magnet 190 can be exposed from the upper surface 23 of the housing 140.

[0320] For example, the upper ends of the N pole and the S pole of the second magnet 190 can be exposed from the upper surface 23 of the housing 140.

[0321] The first magnet base 141b may include an opening at the upper surface 23 of the housing 140 and may be disposed in the upper surface 23 of the housing 140 so as to be spaced apart from both the outer peripheral surface 21 and the inner peripheral surface 22 of the housing 140.

[0322] The first part Q11 of the housing 140 may be located between the first magnet base 141b and the inner peripheral surface 22 of the housing 140, and the second part Q2 of the housing 140 may be located between the first magnet base 141b and the outer peripheral surface 21 of the housing 140.

[0323] The thickness t3 of the first part Q11 of the housing 140 is greater than the thickness t4 of the second part Q2 of the housing 140 (t3>t4).

[0324] Because the thickness t3 of the first portion Q11 of the housing 140 is greater than the thickness t4 of the second portion Q2, the first portion Q11 may expand more than the second portion Q23 as the ambient temperature increases. Since the first portion Q1 expands more than the second portion Q2, the distance between the second magnet 190 and the first position sensor 170 may increase. Furthermore, the distance between the first magnet 130 and the second magnet 190 may increase as the ambient temperature increases. Therefore, this embodiment can have the following characteristics: Figure 15 The effect shown is to reduce the output of the first position sensor 170 and move the position of the first intersection point 15a into the third quadrant.

[0325] Figure 19 A third embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120. Figure 17In the accompanying drawings, the same reference numerals indicate the same parts, and the description of the same parts is simplified or omitted.

[0326] Reference Figure 19 The first part Q12 of the housing 140 is located between the second magnet 190 and the inner peripheral surface 22 of the housing 140, and the third part Q3 of the housing 140 is located between the second magnet 190 and the upper surface 23 of the housing 140.

[0327] Only one side surface of the second magnet 190 can be exposed from the outer peripheral surface 21 of the housing 140.

[0328] For example, the S pole of the second magnet 190 can be exposed from the outer peripheral surface 21 of the housing 140.

[0329] The first magnet base 141b can be recessed from the outer peripheral surface 21 of the housing 140.

[0330] The first magnet base 141b may include an opening at the outer peripheral surface 21 of the housing 140 and may be disposed in the outer peripheral surface 21 of the housing 140 so as to be spaced apart from both the upper surface 23 and the inner peripheral surface 22 of the housing 140.

[0331] The third part Q3 of the housing 140 may be located between the first magnet base 141b and the upper surface 23 of the housing 140, and the first part Q12 of the housing 140 may be located between the first magnet base 141b and the inner peripheral surface 22 of the housing 140 and between the third part Q3 of the housing 140 and the inner peripheral surface 22.

[0332] Although the thickness of the first portion Q12 of the housing 140 may be greater than the thickness of the third portion Q3, this disclosure is not limited thereto.

[0333] Because the first magnet base 141b has an opening at the outer peripheral surface 21 of the housing 140, and the first portion Q12 of the housing 140 exists between the first magnet base 141b and the inner peripheral surface 22 of the housing 140, the first portion Q12 of the housing 140 may expand as the ambient temperature increases, and the distance between the second magnet 190 and the first position sensor 170 may increase. Furthermore, the distance between the first magnet 130 and the second magnet 190 may increase as the ambient temperature increases. Therefore, this embodiment can have the following characteristics: Figure 15 The effect shown is to reduce the output of the first position sensor 170 and move the position of the first intersection point 15a into the third quadrant.

[0334] Figure 20 Another embodiment is shown showing the variation of the output of a first position sensor 170 mounted on housing 140 according to changes in ambient temperature. The horizontal and vertical axes are... Figure 15 The same applies to those in the above. Here, f1 represents the output of the first position sensor 170 at an ambient temperature of 25°C, and f2" represents the output of the first position sensor 170 at an ambient temperature of 65°C.

[0335] Figure 20 The area shown is occupied by a first position sensor 170 that uses a lens moving device equipped with a second lens having a focal length that decreases as the ambient temperature increases.

[0336] Reference Figure 20 To facilitate the calibration of the autofocus feedback drive, the second intersection point 15b between f1 and f2” can be located in the first quadrant, and the output value of the first position sensor 170 used for the autofocus feedback drive can be included in the second region 14.

[0337] Figure 20 The second region 14 may include the second intersection point 15b, and may be a region that spans between the first and third quadrants.

[0338] Figure 20 The output of the first position sensor 170 shown can have positive or negative values. For example, Figure 20 The absolute positive value of the output of the first position sensor 170 shown can be less than the absolute value of the negative value.

[0339] To facilitate autofocus feedback-driven calibration, the second intersection 15b may be located in the third quadrant, and the second region 14 may have an upper limit value at the second intersection 15b located in the first quadrant and a lower limit value located in the third quadrant.

[0340] For example, the second intersection point 15b can be positioned to be spaced apart from the origin (0,0), the x-axis, and the y-axis.

[0341] The position of the second intersection point 15b in the first quadrant can be determined by the ambient temperature and the degree of expansion of the shell 140 due to temperature changes. For example, when the ambient temperature and the degree of expansion of the shell 140 due to temperature changes increase, the second intersection point 15b may become farther away from the origin (0,0).

[0342] Given the same magnetic field strength, in Figure 20 The output of the first position sensor 170 in the entire second region 14 can increase as the ambient temperature rises.

[0343] The output range of the first position sensor 170 within the movable travel range of the coil holder 110 can be included within the second region 14. Specifically, the output range of the first position sensor 170 of the lens moving device with the second lens mounted according to the embodiment can be included within the second region 14. For example, the output value of the first position sensor 170 can be controlled within the second region 14.

[0344] The reason for this is that, due to the first and second reasons below, the focus of the second lens mounted on the lens moving device can be automatically corrected during autofocus feedback drive. The first reason is the increased output of the autofocus position sensor in the second region 14 in response to an increase in ambient temperature, resulting in a displacement of the second lens caused by autofocus feedback drive. The second reason is the decrease in the focal length of the second lens due to the increase in ambient temperature.

[0345] Since the second intersection point 15b between f1 and f2” is located in the first quadrant, calibration for autofocus feedback drive can be easily performed.

[0346] For example, the range of output values ​​of the first position sensor 170 used for autofocus feedback drive can be the same as that of the second region 14. The range of output values ​​of the first position sensor 170 used for autofocus feedback drive can include the output value at the second intersection 15b.

[0347] The output value of the first position sensor 170 used for autofocus feedback drive can be in the range from the upper limit of the second intersection point 15b to the lower limit of the third quadrant. For example, the second intersection point 15b can be positioned spaced apart from the origin (0,0), the x-axis, and the y-axis.

[0348] Optionally, the range of the output value of the first position sensor 170 used for autofocus feedback drive may not include the second intersection point 15b. For example, the range of the output value of the first position sensor 170 used for autofocus feedback drive may be the portion of the second region 14 located in the third quadrant.

[0349] The reason is that the deviation in the output value of the first position sensor 170 caused by temperature changes is... Figure 20 The area near the second intersection point 15b is small, so it cannot adequately compensate for the change in focal length of the second lens caused by temperature changes. Therefore, by setting a portion of the first quadrant of the second region 14 to fall within the output range of the first position sensor 170 for autofocus feedback drive, the deviation of the output value of the first sensor 170 caused by temperature changes increases in this portion, which can adequately compensate for the change in focal length of the first lens caused by temperature changes.

[0350] When the range of the output value of the first position sensor 170 does not include the second intersection point 15b, the second intersection point 15b may be the intersection point between the extensions of the curves representing the output of the first position sensor 170 according to the temperature change.

[0351] Figure 21 A fourth embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120. Figure 16 In the accompanying drawings, the same reference numerals indicate the same parts, and the description of the same parts is simplified or omitted.

[0352] Reference Figure 21 The first portion R1 of the housing 140 may be located between the second magnet 190 and the outer peripheral surface 21 of the housing 140. The upper part of the second magnet 190 may be exposed from the upper surface 23 of the housing 140, and one side surface of the second magnet 190 may be exposed from the inner peripheral surface 22 of the housing 140.

[0353] For example, the upper ends of the N pole and the upper ends of the S pole of the second magnet 190 can be exposed from the upper surface 23 of the housing 140, and one side surface of the N pole of the second magnet 190 can be exposed from the inner peripheral surface 22 of the housing 140.

[0354] The first magnet base 141b can be disposed in the upper end of the housing 140 and can include a first opening and a second opening, the first opening being located at the upper surface 23 of the housing 140 and the second opening being located at the inner peripheral surface 22 of the housing 140.

[0355] The first portion R1 of the housing 140 may be located between the second magnet 190 mounted on the housing 140 and the outer peripheral surface 21 of the housing 140. For example, the first portion R1 of the housing 140 may be located between the first magnet base 141b and the outer peripheral surface 21 of the housing 140.

[0356] like Figure 21 As shown, the adhesive member 195 can be located between the second magnet 190 and the first magnet base 141b in order to fix the second magnet 190 to the housing 140.

[0357] exist Figure 21 In the embodiment shown, when the ambient temperature is a first temperature (e.g., 25°C), the thickness of the adhesive member 195 can be t11, and the thickness of the first portion R1 of the housing 140 can be t12. The distance between one end of the second magnet 190 and the first position sensor 170 can be d3.

[0358] Figure 22 Showing the changes according to temperature Figure 21The relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120 is shown.

[0359] Reference Figure 22 When the ambient temperature is a second temperature (e.g., 65°C), the adhesive member 195 and the housing 140 may expand. Therefore, the thickness of the adhesive member 195 can be t11' (>t11), the thickness of the first portion R1' can be t12' (>t12), and the distance between one end of the second magnet 190 and the first position sensor 170 can be d4 ( <d3)。

[0360] When the ambient temperature rises, the distance between the second magnet 190 and the first position sensor 170 may decrease due to the expansion of the adhesive member 195 and the housing 140, and the distance between the first magnet 130 and the second magnet 190 may also decrease. Therefore, this embodiment can have the effect of increasing the output of the first position sensor 170. Figure 20 As shown, there is an effect that moves the position of the second intersection point 15b to the first quadrant.

[0361] Figure 23 A fifth embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120. Figure 18 In the accompanying drawings, the same reference numerals indicate the same parts, and the description of the same parts is simplified or omitted.

[0362] Reference Figure 23 The first part R11 of the housing 140 is located between the second magnet 190 and the outer peripheral surface 21 of the housing 140, and the second part R2 of the housing 140 is located between the second magnet 190 and the inner peripheral surface 22 of the housing 140.

[0363] Only the upper part of the second magnet 190 can be exposed from the upper surface 23 of the housing 140.

[0364] For example, the upper ends of the N pole and the S pole of the second magnet 190 can be exposed from the upper surface 23 of the housing 140.

[0365] Figure 23 The first magnet base 141b may include an opening at the upper surface 23 of the housing 140 and may be disposed in the upper surface 23 of the housing 140 so as to be spaced apart from both the outer peripheral surface 21 and the inner peripheral surface 22 of the housing 140.

[0366] The first part R11 of the housing 140 may be located between the first magnet base 141b and the outer peripheral surface 21 of the housing 140, and the second part R2 of the housing 140 may be located between the first magnet base 141b and the inner peripheral surface 21 of the housing 140.

[0367] The thickness of the first portion R11 of the housing 140 is greater than the thickness of the second portion R2 of the housing 140 (R11>R2). Figure 23 In this embodiment, because the thickness of the first portion R11 of the housing 140 is greater than the thickness of the second portion R2, the first portion R11 of the housing 140 can expand more than the second portion R2 as the ambient temperature rises, and the distance between the second magnet 190 and the first position sensor 170 may decrease. Therefore, this embodiment can have the following characteristics: Figure 20 The effect shown is to increase the output of the first position sensor 170 and cause the position of the second intersection point 15b to move into the first quadrant.

[0368] Figure 24 A sixth embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120. Figure 19 In the accompanying drawings, the same reference numerals indicate the same parts, and the description of the same parts is simplified or omitted.

[0369] Reference Figure 24 The first part R12 of the housing 140 is located between the second magnet 190 and the outer peripheral surface 21 of the housing 140, and the third part R3 of the housing 140 is located between the second magnet 190 and the upper surface 23 of the housing 140.

[0370] Only one side surface of the second magnet 190 can be exposed from the inner peripheral surface 22 of the housing 140.

[0371] For example, the N pole of the second magnet 190 may be exposed from the inner peripheral surface 22 of the housing 140.

[0372] Figure 24 The first magnet base 141b may include an opening at the inner peripheral surface 22 of the housing 140 and may be disposed in the inner peripheral surface 21 of the housing 140 so as to be spaced apart from both the upper surface 23 and the outer peripheral surface 21 of the housing 140.

[0373] The third part R3 of the housing 140 may be located between the first magnet base 141b and the upper surface 23 of the housing 140, and the first part R12 of the housing 140 may be located between the first magnet base 141b and the outer peripheral surface 21 of the housing 140 and between the third part R3 of the housing 140 and the outer peripheral surface 21.

[0374] Although the thickness of the first portion R12 of the housing 140 may be greater than the thickness of the third portion R3 of the housing 140, this disclosure is not limited thereto.

[0375] because Figure 24 The first magnet base 141b has an opening at the inner peripheral surface 22 of the housing 140, and a first portion R12 of the housing 140 exists between the first magnet base 141b and the outer peripheral surface 21 of the housing 140. Therefore, as the ambient temperature rises, the first portion R12 of the housing 140 may expand, and the distance between the second magnet 190 and the first position sensor 170 may decrease. Thus, this embodiment can have the following characteristics: Figure 20 The effect shown is to increase the output of the first position sensor 170 and cause the position of the second intersection point 15b to move into the first quadrant.

[0376] Figure 25 A seventh embodiment illustrates the relative positional relationship between the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120.

[0377] and Figure 16 Compared to the relative positional relationships shown, in Figure 25 The positions of the first position sensor 170 and the second magnet 190 are exchanged. In other words, the second magnet 190 can be disposed on the outer peripheral surface of the coil holder 110 and can be fixed to the coil holder 110 via an adhesive member 195. The upper side of the second magnet 190 disposed on the outer peripheral surface of the coil holder 110 can be the N pole, and its lower side can be the S pole.

[0378] The first position sensor 170 can be disposed on the upper end of the housing 140. The first portion Q1 of the housing 140 can be located between the first position sensor 170 and the inner peripheral surface 22 of the housing 140. Based on the expansion of the housing 140 due to temperature changes, the change in distance between the first position sensor 170 and the second magnet 190, and the change in the output of the first position sensor 170 (due to the change in distance and the displacement of the first intersection point 15a), it can be correlated with… Figures 15 to 17 The same as those described in [the text].

[0379] Figure 25 The position of the first position sensor 170 shown can be changed to Figure 18 and Figure 19 The position of the second magnet 190 shown in the diagram.

[0380] Figure 26 The eighth embodiment shows the relative positional relationship of the first position sensor 170, the second magnet 190, the first magnet 130, and the first coil 120.

[0381] and Figure 21 Compared to the relative positional relationships shown, in Figure 26 The positions of the first position sensor 170 and the second magnet 190 are exchanged.

[0382] The first portion R1 of the housing 140 can be located between the first position sensor 170 and the outer peripheral surface 21 of the housing 140. Based on the expansion of the housing 140 due to temperature changes, the change in distance between the first position sensor 170 and the second magnet 190, and the change in the output of the first position sensor 170 (due to the change in distance and the displacement of the first intersection point 15a), it can be combined with... Figures 20 to 22 The same as those described in [the text].

[0383] Figure 26 The position of the first position sensor 170 shown can be changed to Figure 23 and Figure 24 The position of the second magnet 190 is shown in the diagram.

[0384] The implementation method can suppress lens defocus by compensating for changes in the output of the first position sensor 170 caused by changes in ambient temperature and changes in the focal length of the lens mounted on the lens moving device.

[0385] Furthermore, the implementation can easily perform calibration for autofocus feedback drive by moving the intersection point between the curves representing the output of the first position sensor according to temperature changes from the origin of the xy coordinates to the first quadrant or from the origin of the xy coordinates to the third quadrant.

[0386] Furthermore, since the range of the output values ​​of the first position sensor 170 used for autofocus feedback drive does not include intersections 15a and 15b, this embodiment is able to adequately compensate for changes in the focal length of the lens caused by temperature variations.

[0387] Meanwhile, the lens moving device according to the above embodiments can be used in various fields, such as, for example, camera modules. For instance, camera modules can be applied to mobile devices such as mobile phones.

[0388] Figure 27 This is an exploded perspective view showing the camera module 200 according to an embodiment.

[0389] Reference Figure 27 The camera module may include a lens barrel 400, a lens moving device, an adhesive component 612, a filter 610, a first retainer 600, a second retainer 800, an image sensor 810, a motion sensor 820, a hand shake controller 830, and a connector 840.

[0390] The lens barrel 400 can be installed in the coil holder 110 of the lens moving device.

[0391] The first retainer 600 may be located below the base 210 of the lens moving device. The filter 610 may be mounted on the first retainer 600 and the first retainer 600 may have a protrusion 500 for accommodating the filter 610.

[0392] The adhesive member 612 can connect or attach the base 210 of the lens moving device to the first retainer 600. In addition to the attachment function described above, the adhesive member 612 can be used to prevent contaminants from entering the lens moving device.

[0393] The adhesive component 612 can be, for example, an epoxy resin, a thermosetting adhesive, or a UV-curing adhesive.

[0394] Filter 610 can be used to prevent light within a specific frequency band that has already passed through the lens barrel 400 from being introduced into the image sensor 810. Filter 610 can be an infrared light blocking filter, but is not limited to this. Here, filter 610 can be oriented parallel to the XY plane.

[0395] The area of ​​the first retainer 600 where the filter 610 is mounted may be provided with a hole to allow light passing through the filter 610 to be introduced into the image sensor 810.

[0396] The second retainer 800 may be disposed below the first retainer 600, and the image sensor 810 may be mounted on the second retainer 800. Light passing through the filter 610 is introduced into the image sensor 810 to form an image on the image sensor 810.

[0397] For example, the second retainer 800 may include various circuits, devices, and controllers to convert the image formed on the image sensor 810 into an electrical signal and transmit the electrical signal to an external component.

[0398] The second retainer 800 can be implemented as a circuit board, on which an image sensor 810 can be mounted, a circuit pattern can be formed, and various devices can be connected.

[0399] The image sensor 810 can receive an image contained in light introduced by the lens moving device and can convert the received image into an electrical signal.

[0400] The filter 610 and the image sensor 810 can be spaced apart from each other so that they are opposite each other in a first direction.

[0401] The motion sensor 820 can be mounted on the second retainer 800 and can be electrically connected to the hand shaking controller 830 by means of a circuit pattern formed on the second retainer 800.

[0402] The motion sensor 820 outputs rotational angular velocity information about the motion of the camera module 200. The motion sensor 820 can be implemented as a dual-axis or three-axis gyroscope sensor or an angular velocity sensor.

[0403] The hand shake controller 830 can be mounted on the second retainer 800 and can be electrically connected to the second position sensor 240 and the second coil 230 of the lens moving device. For example, the second retainer 800 can be electrically connected to the circuit board 250 of the lens moving device, and the hand shake controller 820 mounted on the second retainer 800 can be electrically connected to the second position sensor 240 and the second coil 230 through the circuit board 250.

[0404] The hand shake controller 830 can output a drive signal, which is used to allow the OIS movable unit of the lens moving device to perform hand shake correction based on the feedback signal from the second position sensor 240 of the lens moving device.

[0405] The connector 840 can be electrically connected to the second retainer 800 and can have a port for electrical connection to external components.

[0406] Figure 28 This is a perspective view showing a portable terminal 200A according to an embodiment. Figure 29 It is shown Figure 28 The diagram shows a view of the configuration of the portable terminal 200A.

[0407] Reference Figure 28 and Figure 29 The portable terminal 200A (hereinafter referred to as the "terminal") may include a body 850, a wireless communication unit 710, an audio / video (A / V) input unit 720, a sensing unit 740, an input / output unit 750, a storage unit 760, an interface unit 770, a controller 780, and a power supply unit 790.

[0408] exist Figure 28 The body 850 shown has an elongated block shape, but its shape is not limited to this and can be any of various types, such as sliding, folding, swinging, or rotating types. In the body 850, two or more sub-bodies are connected to be able to move relative to each other.

[0409] The body 850 may include a shell (e.g., a cover, housing, or shield) that defines the appearance of the terminal. For example, the body 850 may be divided into a front shell 851 and a rear shell 852. Various electronic components of the terminal may be installed in the space defined between the front shell 851 and the rear shell 852.

[0410] The wireless communication unit 710 may include one or more modules, which are capable of enabling wireless communication between the terminal 200A and the wireless communication system or between the terminal 200A and the network where the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless internet access module 713, a near-field communication module 714, and a location information module 715.

[0411] The A / V input unit 720 is used to input audio or video signals and may include, for example, a camera 721 and a loudspeaker 722.

[0412] Camera 721 may include Figure 27 The camera 200 shown is a camera module 200 according to an embodiment.

[0413] The sensing unit 740 can sense the current state of the terminal 200A, such as whether the terminal 200A is open or closed, the position of the terminal 200A, the presence of a user's touch, the orientation of the terminal 200A, or the acceleration / deceleration of the terminal 200A. The sensing unit 740 can also generate sensing signals to control the operation of the terminal 200A. For example, when the terminal 200A is a slide-type phone, the sensing unit 740 can detect whether the slide-type phone is open or closed. Furthermore, the sensing unit 740 is used to sense, for example, whether power is being supplied from the power supply unit 790, or whether the interface unit 770 is connected to an external component.

[0414] The input / output unit 750 is used to generate inputs or outputs, such as visual, auditory, or tactile ones. The input / output unit 750 can generate input data to control the operation of the terminal 200A, and can display information processed in the terminal 200A.

[0415] The input / output unit 750 may include a keypad unit 730, a display module 751, a sound output module 752, and a touchscreen panel 753. The keypad unit 730 can generate input data in response to input to the keypad.

[0416] Display module 751 may include a plurality of pixels, the colors of which change in response to electrical signals. For example, display module 751 may include at least one of liquid crystal display, thin-film transistor liquid crystal display, organic light-emitting diode display, flexible display, and 3D display.

[0417] The audio output module 752 can output audio data received from the wireless communication unit 710 in, for example, call signal receiving mode, call mode, recording mode, voice recognition mode or broadcast receiving mode, or can output audio data stored in the storage unit 760.

[0418] The touchscreen panel 753 can convert the change in capacitance caused by the user's touch on a specific area of ​​the touchscreen into an electrical input signal.

[0419] Storage unit 760 can store programs used to process and control controller 780, and can temporarily store input / output data (e.g., phone book, messages, audio, still images, pictures, and moving images). For example, storage unit 760 can store images captured by camera 721, such as pictures or moving images.

[0420] Interface unit 770 serves as a channel for connection between terminal 200A and external components. Interface unit 770 can receive power or data from external components and can transmit that power or data to corresponding components located in terminal 200A, or can transmit data located in terminal 200A to external components. For example, interface unit 770 may include, for example, a wired / wireless headphone port, an external charging port, a wired / wireless data port, a memory card port, a port for connecting to a device with an identification module, an audio input / output (I / O) port, a video I / O port, and a headphone port.

[0421] The controller 780 can control the overall operation of the terminal 200A. For example, the controller 780 can perform control and processing related to, for example, voice telephony, data communication, and video telephony.

[0422] The controller 780 may include a multimedia module 781 for multimedia playback. The multimedia module 781 may be located within the controller 780 or may be located separately from the controller 780.

[0423] The controller 780 can perform pattern recognition processing, through which handwriting or drawing input to the touch screen is perceived as characters and images, respectively.

[0424] Under the control of the controller 780, the power supply unit 790 can provide the power required to operate the corresponding components when it receives external or internal power.

[0425] The features, configurations, effects, etc., described in the various embodiments above are included in at least one embodiment, and are not necessarily limited to only one embodiment. Furthermore, the features, configurations, effects, etc., exemplified in the various embodiments can be combined with other embodiments, or modified by those skilled in the art. Therefore, anything related to these combinations and modifications should be interpreted as falling within the scope of the embodiments.

[0426] Industrial applicability

[0427] This embodiment can be applied to lens moving devices, camera modules, and optical devices that can suppress lens defocusing caused by changes in ambient temperature and are easy to perform calibration for autofocus feedback drive.

Claims

1. A lens moving device, comprising: case; A coil holder, which is disposed within the housing; A first coil is disposed on the outer peripheral surface of the coil frame; A first magnet is disposed on the housing; A second magnet, which is disposed on the coil frame; and A first position sensor is mounted on the housing. The shell includes an upper surface, a lower surface, an inner peripheral surface, and an outer peripheral surface. Wherein, the housing includes a recess, The first position sensor is disposed in the recess. The housing includes a first portion located between the recess and the outer peripheral surface of the housing, and As the temperature rises, the first part of the shell expands.

2. The lens moving device according to claim 1, wherein, The first position sensor protrudes from the inner peripheral surface of the housing.

3. The lens moving device according to claim 1, wherein, The recess is recessed from the inner circumferential surface and includes a first opening at the upper surface of the housing.

4. The lens moving device according to claim 3, wherein, The recess includes a second opening that opens onto the inner circumferential surface of the housing.

5. The lens moving device according to claim 1, wherein, The side surface of the first position sensor is exposed from the inner peripheral surface of the housing.

6. The lens moving device according to claim 1, wherein, As the temperature rises and the first part of the housing expands, the distance between the second magnet and the first position sensor decreases.

7. The lens moving device according to claim 1, comprising an upper elastic member coupled to the coil frame and the housing.

8. The lens moving device according to claim 7, wherein, The first position sensor is electrically connected to the upper elastic member.

9. The lens moving device according to claim 7, comprising: The second coil is opposite to the first magnet; A circuit board disposed below the second coil and electrically connected to the second coil; as well as A support member that is electrically connected to the upper elastic member and the circuit board.

10. The lens moving device according to claim 9, wherein, The support member is coupled to the upper elastic member.

11. The lens moving device according to claim 10, wherein, The upper elastic member includes a first to a fourth upper elastic member, and The support members include first to fourth support members, and each of the first to fourth support members is connected to a corresponding one of the first to fourth upper elastic members.

12. The lens moving device according to claim 11, wherein, The first position sensor is electrically connected to the first to fourth upper elastic members.

13. The lens moving device according to claim 9, wherein, The second coil includes a circuit component disposed on the circuit board and a coil unit formed in the circuit component.

14. The lens moving device according to claim 9, wherein, It includes a base, which is located below the circuit board.

15. The lens moving device according to claim 14, further comprising a second position sensor disposed on the base and electrically connected to the circuit board.

16. The lens moving device according to claim 15, wherein, The base includes a mounting recess formed in its upper surface, and the second position sensor is disposed in the mounting recess of the base.

17. The lens moving device according to claim 9, wherein, The circuit board includes a terminal rib that is bent at its upper surface and has a plurality of terminals disposed thereon.

18. The lens moving device according to claim 1, wherein, The second magnet is positioned above the first coil.

19. The lens moving device according to claim 1, wherein, The second magnet is spaced apart from the first coil.

20. The lens moving device according to claim 9, wherein, The supporting component is a suspension wire.

21. A camera module, comprising: Lens tube; The lens moving device according to any one of claims 1 to 20, wherein the lens moving device is used to move the lens barrel; as well as Image sensor.

22. An optical device comprising a camera module according to claim 21.

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