Camera device and optical device including same

Abstract

An embodiment comprises: a fixing part; a moving part including an image sensor; a magnet including a first magnet unit and a second magnet unit disposed on a first side part of one of the moving part and the fixing part while being spaced apart from each other in a first direction, and a third magnet unit and a fourth magnet unit disposed on a second side part of said one of the moving part and the fixing part while being spaced apart from each other in the first direction; a coil configured to move the moving part by interaction with the magnet; a ball member disposed between the fixing part and the moving part; a position sensor configured to detect displacement of the moving part; and a control part configured to control a driving signal of the coil.

Description

Camera device and optical device including the same

[0001] The embodiment relates to a camera device and an optical device including the same.

[0002] A camera device is a device that captures a subject as a photograph or video, and is mounted on portable devices, drones, vehicles, etc. To improve image quality, the camera device may have image stabilization (IS) functions, such as Optical Image Stabilizer (OIS), and autofocus (AF) functions to correct or prevent image shaking caused by user movement.

[0003] The embodiment provides a camera device and an optical device including the same, wherein the processing load of the processing unit can be reduced because calibration is easy and simple.

[0004] A camera device according to an embodiment comprises: a fixed part; a movable part including an image sensor; a magnet including a first magnet unit and a second magnet unit spaced apart in a first direction on a first side of either the movable part and the fixed part, and a third magnet unit and a fourth magnet unit spaced apart in the first direction on a second side of either one; a coil that moves the movable part; and a position sensor that detects the displacement of the movable part. The apparatus includes a control unit that controls the driving signal of the coil, wherein the first side and the second side are located opposite each other in a second direction perpendicular to the first direction, and the position sensor includes a first sensor that detects the first magnet unit and outputs a first output signal, a second sensor that detects the second magnet unit and outputs a second output signal, a third sensor that detects the third magnet unit and outputs a third output signal, and a fourth sensor that detects the fourth magnet unit and outputs a fourth output signal, and the control unit generates a first displacement code value corresponding to a first difference value between the first output signal and the fourth output signal, and a second displacement code value corresponding to a second difference value between the second output signal and the third output signal.

[0005] In the second direction, the first magnet unit and the fourth magnet unit may not overlap, and in the second direction, the second magnet unit and the third magnet unit may not overlap.

[0006] The above control unit stores a coordinate code value, and the coordinate code value includes a first code value and a second code value calculated through simulation, wherein the first code value is a code value corresponding to the first difference value that matches the stroke range of the moving unit, and the second code value is a code value corresponding to the second difference value that matches the stroke range of the moving unit.

[0007] The camera device may include a ball member disposed between the fixed part and the moving part. The ball member includes first and second balls disposed to overlap with a first axis; and third and fourth balls disposed to overlap with a second axis that intersects the first axis, wherein the first axis is perpendicular to the optical axis, passes through the optical axis, intersects the first side, and passes between the first magnet unit and the second magnet unit, and the second axis is perpendicular to the optical axis, passes through the optical axis, and intersects the first axis, and the moving part may be tilted with respect to the first axis or the second axis.

[0008] The distance between each of the first to fourth magnet units and the first axis may be smaller than the distance between each of the first to fourth magnet units and the second axis. The coil may include first to fourth coil units corresponding to the first to fourth magnet units in the second direction.

[0009] In the embodiment, a coordinate code value matching the stroke range of the OIS moving part is generated based on the first difference value between the output signal of the first sensor and the output signal of the fourth sensor, and the second difference value between the output signal of the second sensor and the output signal of the third sensor, so the linearity of the mutual relationship between the output values ​​of the OIS position sensors and the displacement of the OIS moving part can be improved.

[0010] In the embodiment, the first to fourth sensors of the OIS position sensor can be positioned so as to be offset from the first axis, which is the driving axis, with respect to the centerline of the coil unit, and as a result, the linearity of the mutual relationship between the output values ​​of the OIS position sensor and the displacement of the OIS moving part can be improved.

[0011] In the embodiment, calibration between the output value of the OIS position sensor and the displacement of the OIS moving part can be performed easily and simply.

[0012] In the embodiment, since calibration is easy and simple, the processing load of the processing unit (e.g., CPU) can be reduced and power consumption can be reduced.

[0013] In addition, in the embodiment, the ball members serving as the drive axes are positioned higher than the image sensor and arranged adjacent to the lens module, so that when the camera device is deactivated or not in use, the tilting of the lens module is reduced, thereby improving the aesthetics of the camera device.

[0014] FIG. 1 is a perspective view of a camera device according to an embodiment.

[0015] Figure 2 is an exploded perspective view of the camera device of Figure 1.

[0016] FIG. 3 is a perspective view of a camera device excluding the cover member.

[0017] FIG. 4 shows a stopper, bobbin, housing, magnets, circuit board, coil, and ball member.

[0018] Figure 5 shows a housing, an OIS magnet, a circuit board, a position sensor, and a coil.

[0019] FIG. 6 shows an image sensor part, a tilting guide part, a magnetic body, and an OIS ball member.

[0020] FIG. 7 is a lower perspective view of an image sensor part, a tilting guide part, a magnetic body, and an OIS ball member.

[0021] Figure 8 shows the base and the magnetic material.

[0022] Figure 9 shows a base, a circuit board, an OIS coil, a magnetic material, a position sensor, and a temperature sensor.

[0023] FIG. 10a is a cross-sectional view of the camera device in the AB direction of FIG. 3.

[0024] FIG. 10b is a cross-sectional view of the camera device in the CD direction of FIG. 3.

[0025] FIG. 10c is a cross-sectional view of the camera device in the EF direction of FIG. 3.

[0026] FIG. 10d is a cross-sectional view of a camera device including a lens module.

[0027] Figure 11 is a functional block diagram of the control unit.

[0028] FIG. 12a is intended to illustrate the first axis tilting of a camera device.

[0029] FIG. 12b is intended to illustrate the second axis tilting of the camera device.

[0030] FIG. 13 shows a tilting guide section, first and second coil units, first and second magnet units, and first and second sensors.

[0031] FIG. 14 shows a tilting guide section, third and fourth coil units, third and fourth magnet units, and third and fourth sensors.

[0032] FIG. 15 shows the arrangement of the first to fourth sensors and ball members.

[0033] FIG. 16a illustrates a calibration method between the displacement of the OIS moving part and the outputs of the first to fourth sensors according to an embodiment.

[0034] Figure 16b shows a lookup table based on the calibration result of Figure 16a.

[0035] FIG. 17 shows the arrangement of the first and second sensors according to another embodiment.

[0036] FIG. 18 shows the arrangement of third and fourth sensors according to another embodiment.

[0037] FIG. 19a shows a perspective view of an optical device according to an embodiment.

[0038] FIG. 19b shows a perspective view of an optical device according to another embodiment.

[0039] Figure 20 shows a configuration diagram of the optical device illustrated in Figures 19a and 19b.

[0040] The following describes an embodiment of the present invention that can specifically realize the above objectives, with reference to the attached drawings.

[0041] In the description of the embodiments, where it is stated that an element is formed "on or under," the term "on or under" includes both cases where two elements are in direct contact with each other and cases where one or more other elements are positioned indirectly between the two elements. Furthermore, when expressed as "on or under," it may include the meaning of a downward direction as well as an upward direction relative to a single element.

[0042] Additionally, relational terms used below, such as "first" and "second," "upper / upper / above," and "lower / lower / below," do not necessarily require or imply any physical or logical relationship or order between such entities or elements, and may be used solely to distinguish one entity or element from another. Furthermore, the same reference number indicates the same element through the description of the drawings.

[0043] Furthermore, terms such as "include," "constitute," or "have" as described above, unless specifically stated otherwise, imply that the relevant component may be inherent; therefore, they should be interpreted as allowing for the inclusion of additional components rather than excluding them. Additionally, terms such as "corresponding" as described above may include at least one of the meanings of "opposing" or "overlapping."

[0044] Hereinafter, a camera device according to an embodiment and an optical device including the same will be described as follows with reference to the attached drawings. For convenience of explanation, the camera device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, and the embodiment is not limited thereto. In each drawing, the X-axis and the Y-axis may refer to directions perpendicular to the Z-axis, which is the direction of the optical axis (OA). In addition, the Z-axis direction, which is the direction of the optical axis (OA), may be defined as any one of the 'first direction', 'second direction', and 'third direction', the X-axis direction may be defined as any one of the 'first direction', 'second direction', and 'third direction', and the Y-axis direction may be defined as the other one among the 'first direction', 'second direction', and 'third direction'.

[0045] Additionally, the X-axis can be defined as either the "first axis" or the "second axis," the X-axis direction can be defined as either the "first axis direction" or the "second axis direction," the Y-axis can be defined as the other of the "first axis" and the "second axis," and the Y-axis direction can be defined as the other of the "first axis direction" and the "second axis direction."

[0046] Additionally, the optical axis (OA) may be the optical axis of a lens mounted on a lens barrel. Alternatively, the optical axis (OA) may be an axis perpendicular to the imaging area of ​​the image sensor and passing through the center of the imaging area. Also, the expression "terminal" below may be replaced with a pad, electrode, or conductive layer. Below, "acquire" may be replaced with "detect" or "generate." Alternatively, "produce" below may be replaced with "acquire," "detect," or "generate."

[0047] The camera device according to the embodiment may perform either a hand image stabilization function or an auto-focusing function, or perform both a hand image stabilization function and an auto-focusing function. The "hand image stabilization function" may be a function that moves the lens in a direction perpendicular to the optical axis or tilts the lens relative to the optical axis to cancel out vibrations (or movements) caused by the user's hand shake. Additionally, the "auto-focusing function" may be a function that automatically focuses on a subject by moving the lens in the direction of the optical axis according to the distance to the subject in order to obtain a clear image of the subject on the image sensor. Hereinafter, "camera device" may be replaced with "camera," "actuator," "camera module," "imaging device," or "photographer."

[0048] FIG. 1 is a perspective view of a camera device (200) according to an embodiment, FIG. 2 is an exploded perspective view of the camera device (200) of FIG. 1, FIG. 3 is a perspective view of the camera device (200) excluding a cover member (300), FIG. 4 shows a stopper (20), a bobbin (110), a housing (140), magnets (40, 130), a circuit board (190), a coil (120), and a ball member (21), FIG. 5 shows a housing (140), an OIS magnet (40), a circuit board (190), a position sensor (170), and a coil (120), FIG. 6 shows an image sensor part (350), a tilting guide part (60), a magnetic body (31), and an OIS ball member (36), FIG. 7 shows an image sensor part (350), a tilting guide part (60), a magnetic body (31), and an OIS ball FIG. 8 is a lower perspective view of a member (36), FIG. 8 shows a base (210) and a magnetic body (32), FIG. 9 shows a base (210), a circuit board (250), an OIS coil (50), a magnetic body (32), a position sensor (24), and a temperature sensor (8), FIG. 10a is a cross-sectional view of a camera device (200) in the AB direction of FIG. 3, FIG. 10b is a cross-sectional view of a camera device (200) in the CD direction of FIG. 3, FIG. 10c is a cross-sectional view of a camera device (200) in the EF direction of FIG. 3, FIG. 10d is a cross-sectional view of a camera device (200) including a lens module (400), FIG. 11 is a functional block diagram of a control unit (830), FIG. 12a is for explaining the first axis tilting of the camera device (200), FIG. 12b is for explaining the second axis of the camera device (200). FIG. 13 is for explaining tilting, and shows a tilting guide section (60), first and second coil units (40A, 40B), first and second magnet units (40A, 40B), and first and second sensors (24A, 24B); FIG. 14 shows a tilting guide section (60), third and fourth coil units (40C, 40D), third and fourth magnet units (40C, 40D), and third and fourth sensors (24C, 24D).FIG. 15 shows the arrangement of the first to fourth sensors (24A to 24D) and ball members (B1 to B4).

[0049] Referring to FIGS. 1 to 15, the camera device (200) may include a fixed part, an OIS (Optical Image Stabilizer) moving part (100), and a support part. The OIS moving part (100) may be expressed as a "moving part," a shaking part, a "moving part," a "moving module," a "tilting part," or a "tilting module."

[0050] The fixed part may be a fixed element. The fixed part may not move in the direction of the optical axis. Alternatively, the fixed part may not move or tilt in a direction perpendicular to the optical axis. Additionally, the fixed part may include a configuration coupled to the fixed part.

[0051] The fixed part may include a base (210). The fixed part may include a cover member (300). For example, the fixed part may include a configuration disposed on or coupled to the base (210) or the cover member (300). For example, the fixed part may include at least one of a circuit board (250), a coil (50), and a magnetic body (32) disposed on the base (210). Additionally, the fixed part may include an OIS position sensor (24). Additionally, the fixed part may include a temperature sensor (8).

[0052] The OIS moving part (100, see FIG. 2) may move or be tilted with respect to the first axis (601) which intersects the optical axis (or optical axis direction) with respect to the fixed part. Additionally, the OIS moving part (100) may move or be tilted with respect to the second axis which intersects the optical axis (or optical axis direction) with respect to the fixed part. The first axis (601) may intersect the optical axis (or optical axis direction), and the second axis (602) may intersect the optical axis (or optical axis direction) and the first axis. For example, the first axis may be perpendicular to the optical axis direction, and the second axis may be perpendicular to the optical axis direction and the first axis.

[0053] The OIS moving unit (100) may include an AF moving unit. The AF moving unit may move in the direction of the optical axis. The AF moving unit may include a bobbin (110). The AF moving unit may further include a component (e.g., a magnet (130)) coupled to the bobbin (110). In another embodiment, the AF moving unit may further include a lens module (400) coupled to the bobbin (110). The lens module (400) may include a lens barrel or / and at least one lens.

[0054] Additionally, the OIS moving unit may include an image sensor unit (350). The image sensor unit (350) may include an "image sensor (810)". The image sensor unit (350) may include a control unit (830). The OIS moving unit may include a sensor base (270) on which the image sensor unit (350) is placed. The OIS moving unit may include a circuit board (817) on which the image sensor (810) is placed. Additionally, the OIS moving unit may include a housing (140) coupled to the sensor base (270). The OIS moving unit may include at least one of a coil (120), a circuit board (190), and a position sensor (170) coupled to the housing (140). The OIS moving unit may include a magnetic body (31) coupled to the sensor base (270).

[0055] The support member can support the OIS moving member with respect to the fixed member. For example, the support member may include a tilting guide member (60). For example, the support member may include a ball member (36).

[0056] The bobbin (110) may be placed within the cover member (300). The bobbin (110) may be placed spaced apart from the housing (140). For example, the bobbin (110) may be placed within the housing (140) to accommodate a lens or lens barrel. The bobbin (110) may be referred to as a "lens holder" or "lens carrier." The bobbin (110) may move in the direction of the optical axis. The camera device (200) may include a coil (120) and a magnet (130) that move the bobbin (110) in a first direction (e.g., the Z-axis direction) by electromagnetic interaction. In this case, the coil (120) and the magnet (130) may be AF driving units. The bobbin (110) may be included in the OIS moving unit, and the bobbin (110) may be tilted with respect to a first axis or a second axis, or rotated by a preset angle.

[0057] The bobbin (110) may include an opening (101) for coupling with the lens module (400). The bobbin (110) may include a lower portion (110A) and an upper portion (110B) positioned on the lower portion (110A). For example, the lower portion (110A) may have a polygonal shape, and the upper portion (110B) may have a cylindrical shape. The bobbin (110) may include a mounting groove (112) for mounting or positioning a magnet (130). The mounting groove (112) may be formed on the outer surface of the lower portion (110A) of the bobbin (110). The bobbin (110) may include a plurality of sides.

[0058] The bobbin (110) may include at least one groove (114) for a ball member (21) to be placed therein. In any one of the sides of the bobbin (110), spaced-apart grooves (114A, 114B) may be formed. The grooves (114A, 114B) may be formed on both sides of the seating groove (112) of the bobbin (110). The groove (114) may be referred to as a "receiving groove" or a "guide groove." The bobbin (110) may include a groove (115) formed at a position corresponding to the buffer portion (25) of the stopper (20).

[0059] The camera device (200) may further include a yoke (135) disposed on the bobbin (110). The yoke (135) may be disposed within the seating groove (112) of the bobbin (110). The yoke (135) may be inserted into the bobbin (110). The yoke (135) may serve to suppress the leakage magnetic flux of the magnet (130) and improve the electromagnetic force between the magnet (130) and the coil (120).

[0060] The magnet (130) may be placed, coupled, or fixed to the bobbin (110). For example, the magnet (130) may be placed or coupled to any of the sides of the bobbin (110). The magnet (130) may be placed or coupled to any side of the bobbin (110) that corresponds to, opposes, or overlaps with the third side (41C) of the housing (130). For example, the magnet (130) may be placed within the seating groove (112) of the bobbin (110). The magnet (130) may be placed between the ball members (21A and 21B). The magnet (130) may be placed between the coil (120) and the yoke (135).

[0061] The magnet (130) may be a two-pole magnet having one N pole and one S pole, or a four-pole magnet having two N poles and two S poles. For example, the N pole and the S pole may face each other in the direction of the optical axis. One end and the other end of the magnet (130) located opposite each other in the direction of the first axis (e.g., the Y-axis direction) may protrude in a direction toward the magnetic body (70). This is to improve the attractive force between the magnetic body (70) and the magnet (130) to stably support the bobbin (110). In another embodiment, the surface of the magnet (130) facing the magnetic body (70) may be flat.

[0062] The housing (140) may be disposed inside the cover member (300). The housing (140) may include an opening (201) corresponding to the opening (101) of the bobbin (110). The opening (201) may penetrate the housing (140) in the direction of the optical axis. The housing (140) may be referred to as a "holder." The housing (140) may include a plurality of sides (41A to 41D). The plurality of sides (41A to 41D) of the housing (140) may correspond to or opposite the sides of the bobbin (110). Referring to FIG. 4, the first side (41A) and the second side (41B) may be located opposite each other in the direction of the first axis (e.g., the direction of the Y-axis). The third side (41C) and the fourth side (41D) may be located opposite each other in the second axis direction (e.g., X-axis direction). The first axis direction may be a direction parallel to the first axis (601). The second axis direction may be a direction parallel to the second axis (602).

[0063] The housing (140) may be positioned below the bobbin (110) and may include a protrusion (45) that protrudes from at least one inner surface of a plurality of sides (41A to 41D) and overlaps with the bobbin (110) in the direction of the optical axis. The protrusion (45) may serve as a lower stopper to restrict the downward movement of the bobbin (110). The housing (140) may include a seating portion (147) for positioning the magnet units (40A to 40D) of the OIS magnet (40). Two seating portions (147) spaced apart from each other may be formed on each of the first side (41A) and the second side (41B) of the housing (140). The seating portion (147) may be a groove or a hole.

[0064] The housing (140) may include relief portions (15A to 15D) formed at positions corresponding to the extension portions (17A to 17D) of the tilting guide portion (60). For example, the relief portions (15A to 15D) may be formed on each side portion (41A to 41D) of the housing (140). The relief portions (15A to 15D) may be grooves with an open bottom so that the extension portions (17A to 17D) of the tilting guide portion (60) can be inserted. For example, the escape portion (15A) may be located between two magnet units (40A, 40B), the escape portion (15B) may be located between two other magnet units (40C, 40D), the escape portion (15C) may be formed in the center of the third side (41C) of the housing (140), and the escape portion (15D) may be formed in the center of the fourth side (41D) of the housing (140). For example, the escape portions (15A, 15B) may be aligned with or overlapped with the first axis (601), and the escape portions (15C, 15D) may be aligned with or overlapped with the second axis (602). A groove (47A) for placing or receiving a part of the first ball (B1) may be formed in the relief portion (15A) of the housing (140), and a groove (47B) for placing or receiving a part of the second ball (B2) may be formed in the relief portion (15B) of the housing (140).

[0065] The housing (140) may include a receiving portion (224) in which a portion of the ball member (21) for AF is placed or received. The receiving portion (224) may be expressed as a "receiving groove," "groove," or "guide groove." The receiving portion (224) may be a groove formed on the inner surface of the third side (41C) of the housing (140). The receiving portion (224) may include two grooves (224A, 224B) spaced apart from each other. The housing (140) may further include a reinforcing member or an insert member inserted inside to increase strength, and the reinforcing member may be formed of a metal material.

[0066] The coil (120) may be placed in the housing (140). The coil (120) may be placed in a direction perpendicular to the optical axis or in a second axis direction (e.g., X-axis direction) so as to correspond, oppose, or overlap with the magnet (130). The coil (120) may be placed on the third side (41C) of the housing (140). The coil (120) may overlap with one end or the other end of the magnet (130) in the first axis direction. In other embodiments, the coil (120) may not overlap with one end or the other end of the magnet (130) in the first axis direction.

[0067] The coil (120) may include a hollow or a hole. For example, the coil (120) may have a ring shape or a closed curve shape. The coil (120) may be a straight line perpendicular to the optical axis (OA) and perpendicular to the outer surface of the third side (41C) of the housing (140), or a ring shape wound around the second axis (602). For example, in a ring-shaped coil (120), the length of the coil (120) in the direction parallel to the first axis (601) may be greater than the length of the coil (120) in the direction of the optical axis.

[0068] The AF moving part (e.g., bobbin (110)) can move in the direction of the optical axis through the interaction between the coil (120) and the magnet (130). A driving signal may be applied to the coil (120) to generate an electromagnetic force through electromagnetic interaction with the magnet (130).

[0069] In another embodiment, the AF coil (120) may be placed in a moving part (e.g., a bobbin), and the AF magnet (130) may be placed in a fixed part (e.g., a housing).

[0070] The camera device (200) may further include a circuit board (190) that is placed in or coupled to the housing (210). The circuit board (190) may be placed in or coupled to the third side (41C) of the housing (140). A coil (120) may be placed in or mounted on the circuit board (190). The coil (120) may be electrically connected to the circuit board (190). The circuit board (190) may include pads (6A, 6B) that are electrically connected to the coil (120) by a conductive adhesive or solder. The coil (120) may be placed on the first surface of the circuit board (190) facing the magnet (130). Additionally, the circuit board (190) may include terminals (83) that are electrically connected to the image sensor unit (350). Pads (6A, 6B) can be electrically connected to two corresponding terminals (83) of the circuit board (190).

[0071] For AF feedback driving, the camera device (200) may further include a position sensor (170). The position sensor (170) can detect the position or displacement of the bobbin (110) in the direction of the optical axis. The position sensor (170) may be opposite to the magnet (130) and may detect the magnet (130). In another embodiment, a sensing magnet opposite to the position sensor (170) may be placed on the bobbin (110) separately from the magnet (130), and the position sensor (170) may detect the displacement of the bobbin by detecting the sensing magnet or the magnetic field of the sensing magnet.

[0072] The position sensor (170) may be placed in the housing (140). The position sensor (170) may be placed on or coupled to the circuit board (190). The position sensor (170) may be electrically connected to the circuit board (190). For example, the position sensor (170) may be placed within the hollow of the coil (120). In another embodiment, the position sensor (170) may be located outside the hollow of the coil (120). The position sensor (170) may be placed on the first surface of the circuit board (190) facing the magnet (130).

[0073] The position sensor (170) may be a Hall sensor. In this case, the position sensor (170) may include two input terminals to which a driving signal is applied and two output terminals to which an output signal is output. A circuit board (800) or a control unit (830) may supply a driving signal to the two input terminals of the position sensor (170), and the output signal output from the two output terminals of the position sensor (170) may be transmitted to the circuit board (800) or the control unit (830). The two input terminals and two output terminals of the position sensor (170) may be electrically connected to four of the terminals (83) of the circuit board (190).

[0074] In another embodiment, the position sensor (170) may be implemented in the form of a driver IC including a Hall sensor. For example, if the position sensor (170) is a driver IC including a Hall sensor, the position sensor (170) may include first and second terminals to which power or driving signals are input, a third terminal for a clock signal, a fourth terminal for a data signal, and fifth and sixth terminals for supplying driving signals to the coil (120). In this case, the fifth and sixth terminals of the position sensor (170) may be electrically connected to two pads (6A, 6B) of the circuit board (190).

[0075] The OIS magnet (40) may be placed in or coupled to the housing (140). The OIS magnet (40) may include a first magnet unit (40A) and a second magnet unit (40B) placed on the first side (41A) of the housing (140), and a third magnet unit (40C) and a fourth magnet unit (40D) placed on the second side (41B) of the housing (140). The magnet (40) may not be placed on the third and fourth sides (41C, 41D) of the housing (140).

[0076] The first magnet unit (40A) and the second magnet unit (40B) may be spaced apart in the second axis direction. The third magnet unit (40C) and the fourth magnet unit (40D) may be spaced apart in the second axis direction. The first magnet unit (40A) and the third magnet unit (40C) may face each other or overlap in the first axis direction, and the second magnet unit (40B) and the fourth magnet unit (40D) may face each other or overlap in the first axis direction. The separation distance (D1) between the first magnet unit (40A) and the second magnet unit (40B) or the separation distance between the third magnet unit (40C) and the fourth magnet unit (40D) may be smaller than the separation distance (D2) between the first magnet unit (40A) and the third magnet unit (40C) and the separation distance (D2) between the second magnet unit (40B) and the fourth magnet unit (40D) (D1 <D2).

[0077] Each of the magnet units (40A to 40D) may include a first magnet part (9A) comprising one N pole and one S pole, a second magnet part (9B) comprising one S pole and one N pole, and a partition (9C) disposed between the first magnet part (9A) and the second magnet part (9B). The partition (9C) may be described as a "Neutral Zone" or "Neutral Region". The partition (9C) may be a non-magnetic material or air, etc. The first magnet part (9A) and the second magnet part (9B) may be located opposite each other in the direction of the optical axis with respect to the partition (9C). The first magnet part (9A) and the second magnet part (9B) may be arranged so that opposite polarities face each other. In another embodiment, each of the magnet units (40A to 40D) may be a two-pole magnet comprising one N pole and one S pole.

[0078] The camera device (200) may include at least one ball member (21) disposed between the bobbin (110) and the housing (140). The ball member (21) may be disposed between the groove (114) of the bobbin (110) and the receiving portion (224) of the housing (140).

[0079] The ball member (21) may be replaced with "rolling member," "ball," or "ball bearing." The ball member (21) may come into contact with the bobbin (110) and the housing (140), perform rolling or rotational motion between the bobbin (110) and the housing (140), and support the movement of the bobbin (110) in the direction of the optical axis. When the bobbin (110) moves in the direction of the optical axis, the ball member (21) may reduce friction between the bobbin (110) and the housing (140). For the rolling or rotation of the ball member (21), the bobbin (110) may come into contact with the ball member (21) and slide or slide in the direction of the optical axis. The ball member (21) may include a first ball member (21A) and a second ball member (21B). Each of the ball members (21A, 21B) may include a plurality of balls arranged in the direction of the optical axis.

[0080] The camera device (200) may include a magnet (130) and a magnetic body (70) with which an attractive force acts. An attractive force may act between the magnetic body (70) and the magnet (130) in a direction perpendicular to the optical axis (or in the direction of the second axis). The magnetic body (70) may be placed in or coupled to the housing (140). The magnetic body (70) may be placed in or coupled to the third side (41C) of the housing (140). The magnetic body (70) may be placed on the second surface of the circuit board (190). The second surface of the circuit board (190) may be the opposite side of the first surface of the circuit board (190). The magnetic body (70) may be inserted into the third side (41C) of the housing (140). In another embodiment, the magnetic body (70) may be placed in the base (210). Due to the attractive force between the magnetic body (70) and the magnet (130), the bobbin (110) and the housing (140) can press the ball member (21), and the bobbin (110) can be stably supported. The magnetic body (70) and the magnet (130) may be a "pressure unit" or a "pressure member."

[0081] The camera device (200) may include an upper stopper (20) positioned on the upper side of the bobbin (110) and on the upper side of the housing (140). The upper stopper (20) may restrict movement in the upward direction of the bobbin (110). The upper stopper (20) may be coupled to the housing (140). The upper stopper (20) may include a body (20A) positioned on the upper side of the bobbin (110) and an extension (20B) connected to the body (20A) and coupled to the side (e.g., 41C, 41D) of the housing (140). The upper stopper (20) may include a hole (29) that corresponds to or faces the bobbin (100) and penetrates the body (20A).

[0082] The extension (29B) may be bent downward from the body (20A). A groove (43) for the extension (20B) may be formed on the side (e.g., 41C, 41D) of the housing (140) for the extension (20B) to be placed therein, and a projection (44) for coupling with the extension (20B) may be formed therein. The upper stopper (20) may include at least one cushioning part (25) (or cushioning body) for cushioning impact. The cushioning part (25) may be placed in the body (20A). The cushioning part (25) may be formed of an impact-absorbing material, such as an elastomer. A hole may be formed in the body (20A), and a cushioning material may be injected into the hole of the body (20A), and the cushioning part (25) may be formed to be placed on at least one of the upper and lower surfaces of the body (20A). The buffer portion (25) may be formed to overlap with the bobbin (110) (e.g., lower portion (110A)) in the direction of the optical axis. The buffer portion (25) may restrict the movement of the bobbin (110) in the upward direction.

[0083] The image sensor unit (350) may be positioned below the housing (140). The image sensor unit (350) may be coupled to the housing (140). The image sensor unit (350) may include an image sensor (810). The image sensor (810) may be positioned to face or overlap the opening (101) of the bobbin (110), the lens module (400), or / and a filter (not shown) in the direction of the optical axis. The image sensor unit (350) may include a circuit board (817) electrically connected to the image sensor (810). The circuit board (817) may include a connector (not shown) for electrical connection to the outside. Additionally, terminals (83) of the circuit board (190) may be electrically connected to the circuit board (817) of the image sensor unit (350).

[0084] The image sensor unit (350) may be placed below the bobbin (110). The image sensor unit (350) may include a sensor base (270) placed below the housing (140). The sensor base (270) may be placed within the cover member (300). The sensor base (270) may be placed within the base (210). The sensor base (270) may be coupled with the housing (140). A circuit board (817) may be placed on the sensor base (270). An image sensor (810) may be placed on the circuit board (817). The circuit board (817) may be placed on the upper surface of the sensor base (270). The circuit board (817) may be coupled with the sensor base (270).

[0085] The sensor base (270) may be referred to as a "holder." Additionally, the housing (140) may be referred to as a "first housing" (or "first holder"), and the sensor base (270) may be referred to as a "second housing" (or "second holder"). Furthermore, the housing (140) and the sensor base (270) may not be distinguished and may be referred to by a single term, such as "housing," "holder," or "sensor base." In another embodiment, the sensor base (270) and the housing (140) may be formed integrally. The sensor base (270) may be spaced apart from the ball member (36).

[0086] The image sensor unit (350) may include a filter (not shown) facing or overlapping with the image sensor (817) in the direction of the optical axis. The filter may be placed in the housing (140) or coupled with the housing (140). For example, the filter may be coupled to the lower part of the housing (140) or the lower surface of the housing (140). For example, the filter may be an infrared blocking filter.

[0087] The base (210) may include a cavity for accommodating the OIS moving part (100). At least a portion of the base (210) may be disposed within the cover member (300). The base (210) may include a plurality of sides (71A to 71D) corresponding to the sides (41A to 41D) of the housing (140). The plurality of sides (41A to 41D) of the housing (140) may be replaced with "sides of the OIS moving part (100)," and the sides (71A to 71D) of the base (210) may be replaced with "sides of the fixed part."

[0088] The base (210) may include a lower portion (214) (or lower plate) located below the sides (71A to 71D). The lower portion (214) of the base (210) may be connected to the lower side of the sides (71A to 71D) of the base (210). For example, the lower portion (214) of the base (210) may be referred to as a "bottom portion," "bottom surface," or "body." For example, the sides (71A to 71D) may extend upward from the lower portion (214) or protrude. Each of the first to fourth sides (71A to 71D) of the base (210) may be arranged parallel to any one of the corresponding side plates (302) of the cover member (300).

[0089] The base (210) may include a seating portion (73) for placing or receiving a coil (50). The seating portion (73) may be in the form of a through hole penetrating the side of the base (210). In another embodiment, the seating portion (73) may be in the form of a groove recessed from the side of the base (210). The seating portion (73) may include first and second seating portions (73A, 73B) formed spaced apart from each other on the first side (71A) of the base (210), and third and fourth seating portions (73C, 73D) formed spaced apart from each other on the second side (71B) of the base (210).

[0090] The base (210) may include a receiving portion (217) for receiving a magnetic body (32). The receiving portion (217) may be placed or formed in the lower portion (214) of the base (210). The receiving portion (217) may be a groove formed in the lower portion (214) of the base (210).

[0091] The base (210) may include escape portions (26A to 26D) for avoiding spatial interference with the extension portions (17A to 17D) of the tilting guide portion (60). The escape portions (26A to 26D) may be formed on the first to fourth sides (71A to 71D) of the base (210). The escape portions (26A to 26D) may be in the form of grooves formed on the sides (e.g., 71A, 71B), or in the form of holes or openings penetrating the sides (e.g., 71C).

[0092] The base (210) may include grooves (75A, 75B) for accommodating or receiving at least a portion of the ball members (B3, B4). The grooves (75A, 75B) may be located in the center of the third and fourth sides (71C, 71D) of the base (210). The grooves (75A, 75B) may be located lower than the upper surface of the third and fourth sides (71C, 71D) of the base (210) and higher than the upper surface of the lower part (214) of the base (210). The grooves (75A, 75B) may be located opposite each other in the second axis direction. The base (210) may include a first protrusion (44A) located below the third relief portion (26C) and protruding from the upper surface of the lower portion (214) of the base (210), and a second protrusion (44B) located below the fourth relief portion (26D) and protruding from the upper surface of the lower portion (214) of the base (210). A groove (75A) may be formed on the upper surface of the first protrusion (44A), and a groove (75B) may be formed on the upper surface of the second protrusion (44B).

[0093] The base (210) may further include a reinforcing member (215) inserted inside to reinforce strength, and the reinforcing member (215) may be made of metal. The reinforcing member (215) may also be represented as an insert member. A portion of the reinforcing member (215) may be exposed from the upper surface of the lower part (214) of the base (210) (or the bottom surface of the receiving portion (217)), and a magnetic body (32) may be attached to the exposed portion of the reinforcing member (215).

[0094] The coil (50) may be placed on the base (210) to correspond to or opposite the OIS magnet (40). The coil (50) may tilt the OIS moving part (100) with respect to the first axis or the second axis or rotate it by a preset angle through interaction with the OIS magnet (40) placed on the OIS moving part.

[0095] The coil (50) may include a plurality of coil units (50A to 50D) that correspond to, oppose, or overlap with a plurality of magnet units (40A to 40D). The coil (50) may include a first coil unit (50A) and a second coil unit (50B) disposed on the first side (71A) of the base (210), and a third coil unit (50C) and a fourth coil unit (50D) disposed on the second side (71B) of the base (210). Each of the coil units (50A to 50D) may correspond to, oppose, or overlap with any one of the corresponding magnet units (40A to 40B) in the first axis direction (e.g., the Y-axis direction). The coil (50) may not be disposed on the third and fourth sides (71C, 71D) of the base (210).

[0096] Each of the coil units (50A to 50D) may include a hollow (4A to 4D) or a hole. Each of the coil units (50A to 50D) may have a ring shape or a closed curve shape. The hollow (4A to 4D) of each of the coil units (50A to 50D) may face or overlap with any one of the corresponding magnet units (40A to 40D) in the first axial direction.

[0097] Each of the first and second coil units (50A, 50B) may be in the shape of a ring wound with respect to an axis (or first axis) perpendicular to the outer surface of the first side (71A) of the base (210), and each of the third and fourth coil units (50C, 50D) may be in the shape of a ring wound with respect to an axis (or first axis) perpendicular to the outer surface of the second side (71B) of the base (210).

[0098] In another embodiment, the positions of the OIS coil (50) and the OIS magnet (40) may be reversed. That is, the first and second magnet units of the OIS magnet may be placed on the first side (41A or 71A) of either the moving part (e.g., housing (140)) or the fixed part (e.g., base (210)), and the third and fourth magnet units may be placed on the second side (41B or 71B) of either the moving part (e.g., housing (140)) or the fixed part (e.g., base (210)).

[0099] Additionally, the first and second coil units of the OIS coil may be placed on the first side (41A or 71A) of the remaining one of the moving part (e.g., housing (140)) and the fixed part (e.g., base (210)), and the third and fourth coil units may be placed on the second side (41B or 71B) of the remaining one of the moving part (e.g., housing (140)) and the fixed part (e.g., base (210)). At this time, the sensors (24A to 24D) may be located on the side of the fixed part and the moving part where the coil units are placed.

[0100] Also, at this time, the first axis (601) may intersect with the first side (41A or 71A) of either the moving part (e.g., housing (140)) or the fixed part (e.g., base (210)). For example, the first axis (601) may be perpendicular to the first side (41A, 71A). The first axis (601) may be perpendicular to the optical axis (OA), pass through the optical axis (OA), and pass between the first magnet unit (40A) and the second magnet unit (40B). Also, the second axis (602) may intersect with the first axis (601). For example, the first axis (601) and the second axis (601) may be perpendicular. The second axis (602) may be perpendicular to the optical axis (OA) and pass through the optical axis.

[0101] The camera device (200) may include a circuit board (250) that is placed or coupled to a fixed part (e.g., a base (210)). The circuit board (250) may be placed or coupled to at least one of the sides (71A to 71D) of the base (210). The circuit board (250) may include a first board (250A) placed on the first side (71A) of the base (210), a second board (250B) placed on the second side (71B) of the base (210), and a third board (250C) placed on the third side (71C) of the base (210). The circuit board (250) may include terminals (251) for electrical connection with the outside. The third board (250C) may include a hole (255) to avoid spatial interference with the first protrusion (44A) of the base (210).

[0102] Each of the first and second coil units (50A, 50B) may be placed on or coupled to the first substrate (250A) of the circuit board (250) and may be electrically connected to the first substrate (250). Each of the third and fourth coil units (50C, 50D) may be placed on or coupled to the second substrate (250B) of the circuit board (250) and may be electrically connected to the second substrate (250B).

[0103] For OIS feedback driving, the camera device (200) may include an OIS position sensor (24). The OIS position sensor (24) can detect displacement or angular displacement of the OIS moving part (100) due to tilting or rotation of the OIS moving part.

[0104] The OIS position sensor (24) may include a first sensor (24A) corresponding to, opposite to, or overlapping with the first magnet unit (50A) in the first axis direction, a second sensor (24B) corresponding to, opposite to, or overlapping with the second magnet unit (50B) in the first axis direction, a third sensor (24C) corresponding to, opposite to, or overlapping with the third magnet unit (50C) in the first axis direction, and a fourth sensor (24D) corresponding to, opposite to, or overlapping with the fourth magnet unit (50D) in the first axis direction.

[0105] The first and second sensors (24A, 24B) may be placed on the first side (71A) of the base (210) and may be spaced apart from each other in the second axis direction (X-axis direction). The first and second sensors (24A, 24B) may be placed on the first substrate (250A) and may be electrically connected to the first substrate (250A). The third and fourth sensors (24C, 24D) may be placed on the second side (71B) of the base (210) and may be spaced apart from each other in the second axis direction (X-axis direction). The third and fourth sensors (24C, 24D) may be placed on the second substrate (250B) and may be electrically connected to the second substrate (250B). For example, the first sensor (24A) may be placed inside the hollow (4A) of the first coil unit (50A), the second sensor (24B) may be placed inside the hollow (4B) of the second coil unit (50B), the third sensor (24C) may be placed inside the hollow (4C) of the third coil unit (50C), and the fourth sensor (24D) may be placed inside the hollow (4D) of the fourth coil unit (50D). In another embodiment, each sensor (24A to 24D) may be located outside the hollow (4A to 4D) of each coil unit (50A to 50D).

[0106] The first sensor (24A) can detect the first magnet unit (40A), and the second sensor (24B) can detect the second magnet unit (40B). The third sensor (24C) can detect the third magnet unit (40C), and the fourth sensor (24D) can detect the fourth magnet unit (40D). Each of the first to fourth sensors (24A, 24B, 24C, 24D) may be a Hall sensor. Each of the first to fourth sensors (24A, 24B, 24C, 24D) may include first and second input terminals for receiving power or driving signals and first and second output terminals for outputting output signals.

[0107] The camera device (200) may include a control unit (830) for controlling the driving of the coil (50). The control unit (830) may be electrically connected to the circuit board (250). The control unit (830) may be placed on the circuit board (250). The control unit (830) may supply power or a driving signal to each of the first to fourth sensors (24A to 24D). The control unit (830) may receive outputs (or output signals) of the first to fourth sensors (24A, 24B, 24C, 24D). The control unit (830) may include a driving unit (510) that supplies a driving signal to each of the first to fourth coil units (50A to 50D).

[0108] The control unit (830) can calculate the difference (hereinafter "first difference value") between the output signals of the first and fourth sensors (24A, 24D) corresponding to the first and fourth magnet units (40A, 40D) that do not overlap each other in the first axis direction. Additionally, the control unit (830) can calculate the difference (hereinafter "second difference value") between the output signals of the second and third sensors (24B, 24C) corresponding to the second and third magnet units (40B, 40C) that do not overlap each other in the first axis direction.

[0109] For example, the output terminal of the first sensor (24A) and the output terminal of the fourth sensor (24B) may be connected in series circuitry, and the output terminal of the second sensor (24B) and the output terminal of the third sensor (24C) may be connected in series. In other embodiments, various circuit configurations may be provided to obtain the first difference value and the second difference value.

[0110] The control unit (830) may include an analog-to-digital converter (530) that receives output signals of the first to fourth sensors (24A to 24D) and outputs a data value (or code value) based on the result of analog-to-digital conversion of the received output signals. The control unit (830) may generate a "first code value (or first difference data value)" based on the result of analog-to-digital conversion of the first difference value, and may generate a "second code value (or second difference data value)" based on the result of analog-to-digital conversion of the second difference value.

[0111] The control unit (830) can control or adjust the driving signals of the first to fourth coil units (50A to 50D) using the first code value and the second code value. In another embodiment, the control unit (830) can convert the output of each of the first to fourth sensors (24A to 24D) from analog to digital, calculate the first to fourth data values ​​corresponding to the outputs of each sensor, and calculate the difference between the first data value and the fourth data value (or the first code value) and the difference between the second data value and the third data value (or the second code value).

[0112] The camera device (200) may include temperature sensors (8A to 8D) disposed on a circuit board (250) and electrically connected to the circuit board (250). Each of the temperature sensors (8A to 8D) may be disposed adjacent to any one of the corresponding sensors (24A to 24D). For example, each of the temperature sensors (8A to 8D) may be disposed inside any one of the corresponding hollows (4A to 4D) of the coil units (50A to 50D). Each of the temperature sensors (8A to 8D) may measure the temperature around the temperature sensor. Information regarding the temperature measured by the temperature sensors (8A to 8D) may be used to compensate for the influence of the output of each of the first to fourth sensors (41A to 41D) due to temperature changes. The control unit (830) can compensate the output value (or data value regarding the output) of each of the first to fourth sensors (24A to 24D) using the temperature measured by the temperature sensors (8A to 8D) and the temperature compensation algorithm (or compensation formula). The temperature compensation algorithm or compensation formula may be stored in the control unit (830) or in a separate memory. The control unit (830) can control the driving signal of the first to fourth coil units (50A to 50D) using the outputs of the first to fourth sensors (24A to 24D).

[0113] The cover member (300) can form a receiving space together with the base (210), and an OIS moving part (100) can be disposed within the receiving space. The cover member (300) may include a top plate (301) and a side plate (302) connected to the top plate (301). The bottom of the side plate (302) of the cover member (300) can be combined with the base (210). A through hole (303) for exposing the lens module (400) to external light may be formed in the top plate (302) of the cover member (300). An opening (304) for exposing the terminal (251) of the circuit board (250) may be formed in the side plate (302) of the cover member (300).

[0114] The following explains the support section.

[0115] A support member may be positioned between a fixed member and an OIS moving member (100). The support member may support the OIS moving member (100) with respect to the fixed member. The support member may be positioned between a sensor base (270) and a base (210), and may support an image sensor member (350) with respect to the base (210). The support member may include a tilting guide member (60). At least a portion of the tilting guide member (60) may be positioned between the sensor base (270) and the base (210).

[0116] The tilting guide part (60) may be replaced with "moving plate," "tilt carrier," "mover," "mover plate," "drive plate," "moving plate," "drive plate," "plate," "rotating plate," "tilting plate," "moving plate," or "support plate." The tilting guide part (60) may be tiltable or rotatable by a preset angle with respect to a first axis or a second axis.

[0117] The tilting guide portion (60) may include a body (61) positioned between the sensor base (270) and the lower portion (214) of the base (210), and a plurality of extension portions (17A to 17D) connected to the body (61). The body (61) may be in the form of a plate. To avoid spatial interference with the magnetic body (31), the tilting guide portion (60) may include a hole (60A) that corresponds to, opposes, or overlaps with the magnetic body (31) (or magnetic body (32)) in the direction of the optical axis. The hole (60A) may be a through hole penetrating the body (61).

[0118] The tilting guide portion (60) may include at least one of an injection molded part and a metal member. The tilting guide portion (60) may include a plastic, resin, or ceramic material. The tilting guide portion (60) may include a metal material, for example, SUS material. For example, the tilting guide portion (60) may be an injection molded part with a metal member inserted therein. Also, the tilting guide portion (60) may be a non-magnetic material. In another embodiment, the tilting guide portion (60) may be a magnetic material. For example, each of the extension portions (17A to 17D) may include an injection molded part and a metal member. The extension portions (17A to 17D) may be formed as an injection molded part, and a groove may be formed at the end of each of the extension portions (17A to 17D) for placing at least a portion of the ball member (B1 to B4).

[0119] The first and second extensions (17A, 17B) may be located opposite each other in the first axis direction with respect to the body (61), and the third and fourth extensions (17C, 17D) may be located opposite each other in the second axis direction with respect to the body (61). Each of the extensions (17A to 17D) may extend upward from the body (61).

[0120] The first extension part (17A) may include a first part (1A) connected to the first side of the body (61) and a second part (1B) extending upward from the first part (1A). The second extension part (17B) may include a third part (1C) connected to the second side of the body (61) and extending in a second horizontal direction, and a fourth part (1D) extending upward from the third part (1C). The first side and the second side of the body (61) may be located opposite each other in the first axis direction. The first part (1A) and the third part (1C) may extend in the first axis direction and may extend in opposite directions. A groove for placing a first ball member (B1, B2) may be formed on the upper surface of the first part (1A) of the first extension part (17A) and the fourth part (1D) of the second extension part (17B).

[0121] The third extension (17C) may include a fifth part (2A) connected to the third side of the body (61), a sixth part (2B) extending upward from the fifth part (2A), and a seventh part (2C) extending from the sixth part (2B). The fourth extension (17D) may include an eighth part (2D) connected to the fourth side of the body (61), a ninth part (2E) extending upward from the eighth part (2D), and a tenth part (2F) extending from the ninth part (2E). The third side and the fourth side of the body (61) may be located opposite each other in the second axis direction. The fifth part (2A) and the eighth part (2D) may extend in the second axis direction and may extend in opposite directions. The seventh part (2C) may be extended in the same direction as the fifth part (2A), and the tenth part (2F) may be extended in the same direction as the eighth part (2D), and the seventh part (2C) and the tenth part (2F) may be extended in opposite directions. A groove may be formed on the lower surface of the seventh part (2C) of the third extension part (17C) and the tenth part (2F) of the fourth extension part (17D) for placing ball members (B3, B4).

[0122] The support member may include a first ball member (B1, B2) disposed between the tilting guide member (60) and the housing (140), and a second ball member (B3, B4) disposed between the tilting guide member (60) and the base (210). The first ball member (B1, B2) may include two or more balls. The second ball member (B3, B4) may include two or more balls.

[0123] The first ball (B1) may be placed on the first side (41A) of the housing (140), and the second ball (B2) may be placed on the second side (41B) of the housing (140). The third ball (B3) may be placed on the third side (71C) of the base (210), and the fourth ball (B4) may be placed on the fourth side (71D) of the base (210). For example, the first ball (B1) may be placed in the center of the first side (41A) of the housing (140), and the second ball (B2) may be placed in the center of the second side (41B) of the housing (140). The third ball (B3) can be placed in the center of the third side (71C) of the base (210), and the fourth ball (B4) can be placed in the center of the fourth side (71D) of the base (210).

[0124] The first ball (B1) may be positioned between the first side (41A) of the housing (140) and the first extension (17A) of the tilting guide (60). The first ball (B1) may be positioned between the groove (47A) of the housing (140) and the second part (1B) of the first extension (17A) of the tilting guide (60). The second ball (B2) may be positioned between the second side (41B) of the housing (140) and the second extension (17B) of the tilting guide (60). The second ball (B2) may be positioned between the groove (47B) of the housing (140) and the fourth part (1D) of the second extension (17B) of the tilting guide (60).

[0125] The third ball (B3) may be positioned between the third extension (17C) of the tilting guide part (60) and the third side (71C) of the base (210). The third ball (B3) may be positioned between the seventh part (2C) of the third extension (17C) of the tilting guide part (60) and the first protrusion (44A) of the base (210). The fourth ball (B4) may be positioned between the fourth extension (17C) of the tilting guide part (60) and the fourth side (71D) of the base (210). The fourth ball (B4) may be positioned between the tenth part (2F) of the fourth extension (17D) of the tilting guide part (60) and the second protrusion (44B) of the base (210). In another embodiment, instead of the ball members (B1 to B4), a projection (or hemispherical projection) may be formed at each end of the extensions (17A to 17D) of the tilting guide member (60).

[0126] To reduce friction and reduce power consumption, a lubricant may be disposed in at least one of the grooves (47A, 47B) of the housing (140), the grooves (75A, 75B) of the base (210), and the grooves formed at the ends of the extensions (17A to 17D) of the tilting guide portion (60). The ball members (B1 to B4) may be members that perform rolling motion or sliding motion. In the embodiment, four balls (B1 to B4) are exemplified, but in other embodiments, the number of each of the first and second ball members may be two, three, or five or more.

[0127] The body (61) of the tilting guide portion (60) can be positioned below the image sensor (810). The upper portions (17A to 17D) of the tilting guide portion (60) can be positioned higher than the image sensor (810). As a result, the ball members (B1 to B4) can be positioned higher than the image sensor (810).

[0128] Since the ball members (B1 to B4) are positioned higher than the image sensor (810), the ball members (B1 to B4) can be positioned close to the lens module (400). The drive shafts (601, 602) for tilting the OIS moving part can be positioned higher than the image sensor (810) and close to the lens module (400). As a result, when the OIS operation is not performed, the degree of tilting of the lens module (400) can be reduced. When the OIS operation is not performed, if the tilting of the camera device (200) is large, the aesthetics may be poor. In the embodiment, the drive shafts (601, 602) can be positioned adjacent to the lens module (400) through the extensions (17A to 17D) of the tilting guide part (60), thereby improving the aesthetics of the optical device (200A) equipped with the camera device (200).

[0129] At least a portion of the body (61) of the tilting guide portion (60) may overlap with the image sensor (810) in the optical axis direction. At least a portion of the body (61) of the tilting guide portion (60) may overlap with the lens module (400) (e.g., lens) in the optical axis direction. At least a portion of the opening (60A) of the tilting guide portion (60) may overlap with the image sensor (810) in the optical axis direction. At least a portion of the opening (60A) of the tilting guide portion (60) may overlap with the lens module (400) in the optical axis direction. The ball members (B1 to B4) may not overlap with the image sensor (810) or the lens module (400) in the optical axis direction.

[0130] The support member may include a magnetic body (31) that is placed on or coupled to the OIS moving member (e.g., sensor base (270)) and a magnetic body (32) that is placed on or coupled to the fixed member (e.g., base (210)). The magnetic body (31) and the magnetic body (32) may be replaced with "magnet," "yoke," "holding magnet," "preload plate," or "preload magnet." The magnetic body (31) may face or overlap with the opening (60A) of the tilting guide member (60) in the optical axis direction. The magnetic body (31) may not overlap with the tilting guide member (60) in the optical axis direction.

[0131] The magnetic body (32) may be placed below the magnetic body (31). The magnetic body (32) may overlap with the magnetic body (31) in the direction of the optical axis. The magnetic body (32) may overlap with the opening (60A) of the tilting guide part (60) in the direction of the optical axis. The magnetic body (32) may not overlap with the tilting guide part (60) in the direction of the optical axis. The magnetic body (32) may not overlap with the tilting guide part (60) in a direction perpendicular to the optical axis. In another embodiment, the magnetic body (32) may overlap with the tilting guide part (60) in a direction perpendicular to the optical axis.

[0132] An attractive force may be applied in the direction of the optical axis (or the first direction) between the magnetic body (32) and the magnetic body (31). For example, the magnetic body (32) may be a magnet, and the magnetic body (31) may be a metal plate attached to the magnet. In another embodiment, the magnetic body (31) may be a magnet, and the magnetic body (32) may be a metal plate attached to the magnet. Due to the attractive force between the magnetic body (32) and the magnetic body (31), the sensor base (270) and the base (210) may press the tilting guide part (60), and the tilting guide part (60) and the ball members (B1 to B4) may be in close contact with the sensor base (270), the housing (140), and the base (210). Due to the attractive force between the magnetic body (32) and the magnetic body (31), the tilting guide part (60) and the ball members (B1 to B4) can stably support the OIS moving part (100) with respect to the fixed part, and stable OIS operation can be performed.

[0133] Referring to FIG. 10a, the body (61) of the tilting guide part (60) may be formed such that the slope is lowered from the first side (or second side) of the body (61) toward the third side (or fourth side) of the body (61). That is, the third and fourth sides of the body (61) may be positioned lower than the first and second sides of the body (61). This is to avoid spatial interference between the OIS moving part and the body (61) of the tilting guide part (60) when the OIS moving part is tilted about the first axis (601).

[0134] For hand shake correction, the OIS drive unit can tilt the OIS moving unit (100) based on the first axis (601) or the second axis (602) or rotate it within a preset angle range. The OIS drive unit may include a magnet (40) and a coil (50). The OIS drive unit may include an OIS position sensor (24) for OIS feedback driving. The drive unit of the camera device (200) may include an AF drive unit and an OIS drive unit. The OIS moving unit (100) may be mechanically tilted based on the first axis (601) and the second axis (602) or rotated by a preset angle.

[0135] The first axis (601) may be a straight line passing through the first and second balls (B1, B2), and the second axis (602) may be a straight line perpendicular to the optical axis and passing through the third and fourth balls (B3, B4). For example, the first axis (601) may be a straight line connecting the center of the first ball (B1) and the center of the second ball (B2). The second axis (602) may be a straight line connecting the center of the third ball (B3) and the center of the fourth ball (B4). The second axis (602) may intersect the first axis (601). For example, the first axis (601) and the second axis (602) may be perpendicular to each other. The direction of the first axis may be a direction parallel to the first axis (601), and the direction of the second axis may be a direction parallel to the second axis (602). The first axis (601) may pass through the optical axis (or center (603)). The center (603) may be the center of the OIS moving part (100) and may be a point through which the optical axis (OA) passes. Alternatively, the center (603) may be the center of the opening (101) of the bobbin (110) or the center of the lens module (400).

[0136] Referring to FIGS. 12a and 12b, each of the first to fourth coil units (50A to 50D) can generate an electromagnetic force (F1 to F4) through interaction with any one of the corresponding first to fourth magnet units (40A to 40D).

[0137] In the embodiment, when the OIS moving part (100) is tilted with respect to the first axis (601) or the second axis (602), all of the first to fourth electromagnetic forces (F1 to F4) may be utilized. For example, when the directions of F1 and F2 are both upward (or downward), the directions of F3 and F4 may both be downward (or upward). Also, for example, when the directions of F1 and F3 are both upward (or downward), the directions of F2 and F4 may both be downward (or upward).

[0138] For the tilt of the OIS moving part, the first and fourth electromagnetic forces (F1, F4) can be generated in opposite directions, and the second and third electromagnetic forces (F2, F3) can be generated in opposite directions. By adjusting the first to fourth electromagnetic forces (F1 to F4) in this way, the tilt position of the OIS moving part (100) can be changed.

[0139] In the embodiment, when performing hand shake correction or shake correction, the lens module (400) and the image sensor (810) can be tilted simultaneously in the same direction and by the same angle.

[0140] FIG. 16a illustrates a calibration method between the displacement of the OIS moving part (100) according to an embodiment and the outputs of the first to fourth sensors (24A to 24D), and FIG. 16b illustrates a lookup table according to the calibration result of FIG. 16a. Calibration refers to generating code values ​​for coordinates regarding the stroke (or position) of the OIS moving part (100).

[0141] Referring to FIGS. 16a and 16b, in an embodiment, first and fourth electromagnetic forces (F1, F4) may be generated in opposite directions as in FIG. 12a, and calibration of the relationship between the displacement of the OIS moving part (100) and the first difference value may be performed. At this time, the OIS moving part (100) may exhibit an effect of tilting or rotating with respect to the first diagonal axis (701). That is, in an embodiment, the mutual relationship between the displacement of the OIS moving part (100) tilting with respect to the first diagonal axis (701) and the first difference value may be calibrated using the first and fourth electromagnetic forces (F1, F4). At this time, F2 and F3 may be generated so that the OIS moving part (100) can tilt linearly with respect to the first diagonal axis (701) for accurate calibration. In other embodiments, F2 and F3 may not be generated.

[0142] In addition, in the embodiment, as shown in FIG. 12b, second and third electromagnetic forces (F2, F3) may be generated in opposite directions, and calibration of the relationship between the displacement of the OIS moving part (100) and the second difference value may be performed. At this time, the OIS moving part (100) may exhibit an effect of tilting or rotating with respect to the second diagonal axis (702). That is, in the embodiment, the mutual relationship between the displacement of the OIS moving part (100) tilting with respect to the second diagonal axis (702) and the second difference value may be calibrated using the second and third electromagnetic forces (F2, F3). At this time, F1 and F4 may be generated so that the OIS moving part (100) can tilt linearly with respect to the second diagonal axis (702) for accurate calibration. In other embodiments, F1 and F4 may not be generated.

[0143] The first diagonal axis (701) may intersect the first axis (601) or the second axis (602). The second diagonal axis (702) may intersect the first axis (601) or the second axis (602). For example, the angle between the first diagonal axis (701) and the first axis (601) (or the second axis (602)) may be 45 degrees. In another embodiment, the angle between the first diagonal axis (701) and the first axis (601) (or the second axis (602)) may be 40 to 60 degrees. The first diagonal axis (701) and the second diagonal axis (702) may intersect. For example, the first diagonal axis (701) and the second diagonal axis (702) may be perpendicular.

[0144] According to the results of this calibration, a first difference value (V11 to V1N, a natural number with N>1) can be calculated for the stroke range (or displacement) (A1 to AN, a natural number with N>1) in which the OIS moving part (100) is tilted relative to the first diagonal axis (701). That is, first difference values ​​(V11 to V1N) corresponding to the positions (A1 to AN) of the OIS moving part (100) tilted relative to the first diagonal axis (701) can be calculated. In addition, a first code value (Code11 to Code1N, a natural number with N>1) can be generated based on the result of analog-to-digital conversion of the first difference value (V11 to V1N).

[0145] In addition, a second difference value (V21 to V2M, natural number M>1) can be calculated for the stroke range (or displacement) (B1 to BN, natural number N>1) in which the OIS moving part (100) is tilted relative to the second diagonal axis (702). That is, first difference values ​​(V21 to V2M) corresponding to the positions (B1 to BM) of the OIS moving part (100) tilted relative to the second diagonal axis (702) can be calculated. In addition, a second code value (Code21 to Code2M, natural number M>1) can be generated based on the result of analog-to-digital conversion of the second difference value (V21 to V2M, natural number M>1).

[0146] The control unit (830) may store first code values ​​(Code 11 to Code 1N) and second code values ​​(Code 21 to Code 2M). In another embodiment, a separate memory may be provided to store first code values ​​(Code 11 to Code 1N) and second code values ​​(Code 21 to Code 2M). For example, first code values ​​(Code 11 to Code 1N) and second code values ​​(Code 21 to Code 2M) may be stored in the form of a look-up table. The first code values ​​(Code 11 to Code 1N) and second code values ​​(Code 21 to Code 2M) may be coordinate code values ​​regarding the displacement (or position) of the OIS moving unit (100). The coordinate code values ​​matching the stroke range of the OIS moving unit (100) may include (Code 11 to Code 1N) and second code values ​​(Code 21 to Code 2M).

[0147] The stroke range of the OIS moving part (100) or the displacement of the OIS moving part (100) can be defined or determined by the coordinate code value generated through calibration, and the reliability of the coordinate code value can be secured through calibration by simulation and experiment for verification. OIS feedback driving can be performed based on the coordinate code value of the OIS moving part based on this reliability. Hand shake correction of the camera device according to the embodiment can be performed using the calibration results according to FIGS. 16a and FIGS. 16b.

[0148] When movement (e.g., hand tremor) of an optical device (200A) equipped with a camera device (200) occurs, the control unit obtains position information (e.g., rotational angular velocity information, etc.) regarding the movement of the optical device (200A) detected by a motion sensor. At this time, the control unit may be the control unit (830) of the camera device or the control unit (780) of the optical device (200A).

[0149] And, in order to mitigate or correct the misalignment of the focus of the optical device (200A) due to the movement of the optical device (200A), the camera device (200) or the optical device (200A) generates a "target code value" for controlling the movement of the OIS moving part (100) of the camera device (200) based on position information regarding the movement of the optical device (200A) obtained by a motion sensor. Here, the motion sensor may be provided in the camera device (200) or in the optical device (200A).

[0150] The OIS moving part (100) can be tilted to a displacement (or position) that matches the target code value, and hand tremor correction can be performed. The target code value can be set from the coordinate code values ​​(first code value, second code value in FIG. 16b) regarding the position (or displacement) of the OIS moving part (100) defined by calibration.

[0151] Next, the control unit (830) receives output signals output from the first to fourth sensors (24A to 24D) and calculates a first difference value between the output of the first sensor (24A) and the output of the fourth sensor (24D), and a second difference value between the output of the second sensor (24B) and the output of the third sensor (24C). The control unit (830) can perform analog-to-digital conversion on the first difference value and generate a "first displacement code value." The control unit (830) can perform analog-to-digital conversion on the second difference value and generate a "second displacement code value." The displacement code value of the OIS moving unit may include the first displacement code value and the second displacement code value.

[0152] The control unit (830) can adjust or control the driving signals of the first to fourth coil units (50A to 50D) using the displacement code value and target code value of the OIS moving unit (100). The control unit (830) can compare the displacement code value and target code value of the OIS moving unit (100) and adjust or control the driving signals of the first to fourth coil units (50A to 50D). For example, the control unit (830) can adjust or control the driving signals of the first to fourth coil units (50A to 50D) so that the displacement code value of the OIS moving unit (100) converges to or matches the target code value.

[0153] Referring to FIGS. 13, 14, and 15, each of the sensors (24A to 24D) may be positioned so as to be offset from the first axis (601) with respect to the center line (5A to 5D). The center line (5A to 5D) may be a straight line parallel to the first axis (601) and passing through the center of the magnet unit (40A to 40D) corresponding to each sensor (24A to 24D). Alternatively, the center line (5A to 5D) may be a straight line parallel to the first axis (601) and passing through the center of the coil unit (50A to 50B) corresponding to each sensor (24A to 24D). Alternatively, the center line (5A to 5D) may be parallel to the first axis (601) and the center of the hollow (4A to 4D) of the coil unit (50A to 50B).

[0154] Each sensor (24A to 24D) may be located between the center line (5A to 5D) and the first axis (601). When viewed in the direction of the optical axis or from above, each sensor (24A to 24D) may not overlap with the center line (5A to 5D).

[0155] The center (52A to 52D) of each sensor (24A to 24D) may be positioned so as to be offset from the first axis (601) with respect to the center line (5A to 5D). Each sensor (24A to 24D) may be positioned between the center line (5A to 5D) and the first axis (601).

[0156] Each of the coil units (50A to 50D) includes a first end (33A) and a second end (33B) located opposite each other in the direction of the second axis, and the first axis (601) is located closer to the first end (33A) than to the second end (33B).

[0157] Each sensor (24A to 24B) may be located closer to the first end (33A) than to the second end (33B) of any corresponding coil unit (50A to 50D). The center (52A to 52D) of each sensor (24A to 24B) may be located closer to the first end (33A) than to the second end (33B) of any corresponding coil unit (50A to 50D).

[0158] Each sensor (24A to 24D) may be spaced apart from any one of the corresponding coil units (50A to 50D). In another embodiment, the sensors (24A to 24D) may be in contact with any one of the corresponding coil units (50A to 50D).

[0159] The distance (K1) from the center (52A to 52D) of each sensor (24A to 24D) to the first axis (601) may be smaller than the distance from the centerline (5A to 5D) to the first axis (601) (K1 <K2).

[0160] The distance (M1) between the magnet units (40A to 40D) and the first axis (601) is smaller than the distance (M2) between the magnet units (40A to 40D) and the second axis (601). <M2). 또한 실시 예에서는 각 센서(24A 내지 24D)와 제1축(601) 간의 거리(L1)가 각 센서(24A 내지 24D)와 제2축(602) 간의 거리보다 작다(L1<L2).

[0161] Referring to FIG. 13, each sensor (24A to 24D) may overlap in the first axis direction with the area between the center of the magnet unit (40A to 40D) corresponding to each sensor and one end of the magnet unit (40A to 40D) adjacent to the first ball member (B1, B2).

[0162] In another embodiment, when viewed in the direction of the optical axis or from above, a portion of each sensor (24A to 24D) may overlap with the centerline (5A to 5D). In this case, each sensor (24A to 24B) may include a first area located close to the first ball member (B1, B2) with respect to the centerline (5A to 5D) and a second area located opposite the first area with respect to the centerline (5A to 5D), and the area of ​​the first area (or length in the direction of the second axis) may be larger than the area of ​​the second area (or length in the direction of the second axis).

[0163] Referring to FIG. 15, in a coordinate plane where the first axis (601) is the Y-axis, the second axis (602) is the X-axis, and the center (603) is the origin, OIS coil units and OIS magnet units corresponding to each other are arranged in each quadrant of the coordinate plane. Additionally, the first and second balls (B1, B2) may overlap with the first axis (601) or be aligned with the first axis (601), and the third and fourth balls (B3, B4) may overlap with the second axis (602) or be aligned with the second axis (602).

[0164] As described in FIGS. 12a and 12b, a driving signal can be supplied to all four coil units (50A to 50D), and the OIS moving part can be tilted using all four electromagnetic forces (F1 to F4). Thus, in the embodiment, the driving force for tilting the OIS moving part can be increased, a heavy lens module can be tilted, and the resolution of the image sensor can be improved.

[0165] In the arrangement of the OIS coil (50), OIS magnet (40), and OIS sensor (24) as illustrated in FIG. 15, the embodiment may have the following features to improve linearity according to the mutual relationship between the OIS moving part and the OIS sensor (24).

[0166] In the embodiment, in order to increase the linear interval between the output of the OIS sensor (24) and the displacement of the OIS moving part (100), a first difference value between the output of the first sensor (24A) and the output of the fourth sensor (24D) and a second difference value between the output of the second sensor (24B) and the output of the third sensor (24C) are obtained, and the obtained first difference value and second difference value are used for calibration with the displacement of the OIS moving part (100).

[0167] When the OIS moving part (100) is tilted with respect to the first axis (601) and the second axis (602), when the area of ​​the OIS moving part (100) belonging to the first quadrant (or the second quadrant) moves upward, the other area of ​​the OIS moving part (100) belonging to the third quadrant (or the fourth quadrant) moves downward. As the output value of the first sensor (24A) (or the second sensor (24B)) increases (or decreases) in accordance with this movement, the output value of the fourth sensor (24D) (or the third sensor (24C)) decreases (or increases), so the linearity of the first difference value and the second difference value can be improved.

[0168] In addition, as described with respect to FIG. 15, each sensor (24A to 24D) is positioned so as to be offset or adjacent to the first axis (601) or the first ball member (B1, B2) with respect to the centerline (5A to 5D). As a result, in the embodiment, the linearity of the mutual relationship between the displacement of the OIS moving part (100) and the output of the OIS sensor (24) can be improved. That is, in the embodiment, the linearity of the correlation between the first difference value (or second difference value) and the displacement of the OIS moving part can be improved. As a result, in the embodiment, no additional algorithm or mathematical formula is required to improve the linearity of the mutual relationship between the OIS moving part and the output of the OIS sensor, so the calibration between the OIS moving part and the output of the OIS sensor can be simplified, and the driving control of the OIS moving part by OIS feedback can be made easier.

[0169] In addition, in the embodiment, since calibration is simplified, the processing load of the processing unit (e.g., CPU) can be reduced and power consumption can be reduced.

[0170] FIG. 17 shows the arrangement of first and second sensors (24A, 24B) according to another embodiment, and FIG. 18 shows the arrangement of third and fourth sensors (24C, 24D) according to another embodiment.

[0171] In the embodiments of FIGS. 13 and 14, each sensor (24A to 24D) may be positioned so as to overlap or be aligned with the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)) in a horizontal position of the OIS moving part (100). For example, the center (52A to 52D) of each sensor (24A to 24D) may be positioned so as to overlap or be aligned with the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)) in a horizontal position of the OIS moving part (100).

[0172] The horizontal position of the OIS moving part (100) may be such that the OIS moving part (100) is not tilted with respect to the first axis (601) or the second axis (602). Alternatively, the horizontal position of the OIS moving part (100) may be such that the optical axis (OA) of the OIS moving part (100) (or lens module (400)) is perpendicular to the sensor surface of the image sensor (810). For example, the OIS moving part (100) may be positioned in a horizontal position by controlling or adjusting the driving signal applied to each of the first to fourth coil units (50A to 50D).

[0173] In the embodiments of FIGS. 17 and 18, in the horizontal position of the OIS moving part, the first sensor (24A) and the fourth sensor (24D) may be positioned so as to be offset from each other in the optical axis direction with respect to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)). For example, the center (52A) of the first sensor (24A) and the center (52D) of the fourth sensor (24D) may be positioned so as to be offset from each other in the optical axis direction with respect to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)).

[0174] For example, the center (52A) of the first sensor (24A) may be located lower than the center of the first magnet unit (24A) (or the top of the partition (9C) of the first magnet unit (24A). The center (52D) of the fourth sensor (24D) may be located higher than the center of the fourth magnet unit (24D) (or the bottom of the partition (9C) of the fourth magnet unit (24D).

[0175] Additionally, in the horizontal position of the OIS moving part, the second sensor (24B) and the third sensor (24C) may be positioned so as to be offset from each other in the optical axis direction with respect to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)). The center (52B) of the second sensor (24B) and the center (52C) ​​of the third sensor (24C) may be positioned so as to be offset from each other in the optical axis direction with respect to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)).

[0176] For example, the center (52B) of the second sensor (24B) may be located higher than the center of the second magnet unit (24B) (or the bottom of the partition (9C) of the second magnet unit (24B). The center (52C) ​​of the third sensor (24C) may be located lower than the center of the third magnet unit (24C) (or the top of the partition (9C) of the third magnet unit (24C). At this time, the center of the OIS magnet (24) may be the center of the magnet unit corresponding to each sensor or the partition (9C).

[0177] Additionally, the center (52A) of the first sensor (24A) may be located closer to the lower surface of the first magnet unit (40A) than to the upper surface of the first magnet unit (40A), and the center (52D) of the fourth sensor (24D) may be located closer to the upper surface of the fourth magnet unit (40D) than to the lower surface of the fourth magnet unit (40D). Additionally, the center (52B) of the second sensor (24B) may be located closer to the upper surface of the second magnet unit (40B) than to the lower surface of the second magnet unit (40B), and the center (52C) ​​of the third sensor (24C) may be located closer to the lower surface of the third magnet unit (40C) than to the upper surface of the third magnet unit (40C).

[0178] Additionally, the center of the first sensor (24A) and the center of the second sensor (24B) may be positioned so as to be offset to opposite sides in the optical axis direction relative to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)). Additionally, the center of the third sensor (24C) and the center of the fourth sensor (24D) may be positioned so as to be offset to opposite sides in the optical axis direction relative to the center of the OIS magnet (24) (or the partition wall (9C) of the OIS magnet (24)).

[0179] In the embodiment, by arranging each sensor (24A to 24D) as shown in FIG. 17 and FIG. 18, the linearity between the displacement of the OIS moving part and the output of the OIS sensor can be improved.

[0180] In the embodiments of FIGS. 13 and 14 and FIGS. 17 and 18, each sensor (24A to 24D) is positioned so as to be offset or adjacent to the first axis (601) or the first ball member (B1, B2) with respect to the center line (5A to 5D), but in other embodiments, each sensor (24A to 24D) may be positioned to overlap or be aligned with the center line (5A to 5D). For example, in other embodiments, the center of each sensor (24A to 24D) may be positioned so as to overlap or be aligned with the center line (5A to 5D). In yet another embodiment, each sensor (24A to 24D) may be positioned so as to be offset or adjacent to the opposite side of the first axis (601) or the first ball member (B1, B2) with respect to the center line (5A to 5D).

[0181] A camera device according to another embodiment may have an OIS driving magnet (40) and a separate sensing magnet, and the separate sensing magnet may correspond to, opposite to, or overlap with the OIS sensor (24). For example, a camera device according to another embodiment may include magnet units (40A to 40D) and separate sensing magnet units, and each of the sensing magnet units may correspond to, opposite to, or overlap with any one of the first to fourth sensors.

[0182] In addition, the camera device (200) according to the embodiment may be included in an optical instrument that aims to increase the visual acuity of the eye by using light characteristics such as reflection, refraction, absorption, interference, and diffraction to form an image of an object in space, or to record and reproduce an image by a lens, or to perform optical measurement, propagation or transmission of an image, etc. For example, the optical instrument according to the embodiment may be a mobile phone, a smartphone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation system, or a vehicle camera device, but is not limited thereto, and any device for taking images or photos is possible.

[0183] FIG. 19a shows a perspective view of an optical device (200A) according to an embodiment, FIG. 19b shows a perspective view of an optical device (200X) according to another embodiment, and FIG. 20 shows a configuration diagram of the optical device (200A) shown in FIG. 19a and FIG. 19b.

[0184] The camera device (200) included in the embodiment of FIG. 19a may be a front camera device in which the lens module (400) is positioned to face the front of the body (850). The camera device (200) included in the embodiment of FIG. 19b may be a rear camera device in which the lens module (400) is positioned to face the rear of the body (850) of the optical device (200A). FIG. 19b illustrates an example in which two rear camera devices are positioned, but in other embodiments, one or more rear camera devices may be positioned. In other embodiments, the camera device (200) may be used for both the front camera device and the rear camera device.

[0185] Referring to FIG. 19a, FIG. 19b, and FIG. 20, the optical device (200A) may include a body (850), a wireless communication unit (710), an A / V input unit (720), a sensing unit (740), an input / output unit (750), a memory unit (760), an interface unit (770), a control unit (780), and a power supply unit (790).

[0186] The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment.

[0187] Furthermore, the features, structures, effects, etc. exemplified in each embodiment may be combined or modified and implemented in other embodiments by a person skilled in the art to which the embodiments belong. Therefore, details regarding such combinations and modifications should be interpreted as being included within the scope of the present invention.

[0188] The modes for carrying out the invention have been sufficiently described in the aforementioned "best mode for carrying out the invention."

[0189] The present invention can be used in a camera device and an optical device including the same, such that calibration is easy and simple, thereby reducing the processing load of the processing unit and reducing power consumption.

Claims

1. Fixed part; A moving part including an image sensor; A magnet comprising a first magnet unit and a second magnet unit spaced apart in a first direction on a first side of either the moving part or the fixed part, and a third magnet unit and a fourth magnet unit spaced apart in the first direction on a second side of either one; A coil that moves the above-mentioned moving part; A position sensor for detecting the displacement of the above-mentioned moving part; and It includes a control unit that controls the driving signal of the above coil, and The first side and the second side are located on opposite sides of each other in a second direction perpendicular to the first direction, and 2. In Paragraph 1, The above position sensor includes a first sensor that detects the first magnet unit and outputs a first output signal, a second sensor that detects the second magnet unit and outputs a second output signal, a third sensor that detects the third magnet unit and outputs a third output signal, and a fourth sensor that detects the fourth magnet unit and outputs a fourth output signal.

3. In Paragraph 2, The above control unit is a camera device that generates a first displacement code value corresponding to a first difference value between the first output signal and the fourth output signal, and a second displacement code value corresponding to a second difference value between the second output signal and the third output signal.

4. In Paragraph 1, A camera device in which the first magnet unit and the fourth magnet unit do not overlap in the second direction, and the second magnet unit and the third magnet unit do not overlap in the second direction.

5. In Paragraph 1, The above control unit stores coordinate code values, and The above coordinate code values ​​include a first code value and a second code value calculated through simulation, and A camera device in which the first code value is a code value corresponding to the difference between the output signal of the first sensor and the output signal of the fourth sensor that matches the stroke range of the moving part, and the second code value is a code value corresponding to the difference between the output signal of the second sensor and the output signal of the third sensor that matches the stroke range of the moving part.

6. In Paragraph 1, A camera device comprising a ball member disposed between the fixed part and the movable part.

7. In Paragraph 6, The above ball member is, First and second balls arranged to overlap with the first axis; and A camera device comprising third and fourth balls arranged to overlap with a second axis intersecting the first axis.

8. In Paragraph 7, The first axis is perpendicular to the optical axis, passes through the optical axis and intersects the first side, and passes between the first magnet unit and the second magnet unit, and The second axis is perpendicular to the optical axis, passes through the optical axis, and intersects the first axis, and The above-mentioned moving part is a camera device that tilts with respect to the first axis or the second axis.

9. In Paragraph 8, A camera device in which the distance between each of the first to fourth magnet units and the first axis is smaller than the distance between each of the first to fourth magnet units and the second axis.

10. In Paragraph 8, The above coil is a camera device comprising first to fourth coil units corresponding to the first to fourth magnet units in the second direction.

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