Camera device and optical instrument including the same

Abstract

The embodiment includes a fixed part, a movable part including an image sensor, a magnet and a coil that interact to allow the movable part to move relative to the fixed part, a ball member disposed between the fixed part and the movable part, and a position sensor that detects the displacement of the movable part. The magnet includes a first magnet unit and a second magnet unit disposed on a first side of either the movable part or the fixed part. The ball member includes a first ball and a second ball disposed to overlap with a first axis intersecting the first side. The position sensor includes a first sensor disposed to overlap with the first axis.

Description

Technology Field

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

[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. The problem to be solved

[0003] The embodiment provides a camera device that is easy and simple to calibrate for OIS feedback driving and an optical device including the same. means of solving the problem

[0004] A camera device according to an embodiment comprises: a fixed part; a movable part including an image sensor; a magnet and a coil interacting to allow the movable part to move relative to the fixed part; a ball member disposed between the fixed part and the movable part; and a position sensor for detecting displacement of the movable part, wherein the magnet includes a first magnet unit and a second magnet unit disposed on a first side of either the movable part or the fixed part, the ball member includes a first ball and a second ball disposed to overlap with a first axis intersecting the first side, and the position sensor includes a first sensor disposed to overlap with the first axis. The first sensor may not overlap with the magnet in a direction parallel to the first axis.

[0005] The camera device includes a first sensing magnet positioned to correspond to the first sensor so as to overlap with the first axis, and the first sensor can detect the first sensing magnet. The first sensor may overlap with the first ball in the direction of the optical axis. The first axis may be a straight line perpendicular to the optical axis and passing between the first and second magnet units.

[0006] The first sensor and the first sensing magnet may be positioned higher than the first and second balls. The first sensor may be placed in the fixed part, and the first sensing magnet may be placed in the movable part. The first ball may be placed between the first magnet unit and the second magnet unit.

[0007] The above coil may include first and second coil units that are positioned in the other of the moving part and the fixed part and correspond to the first and second magnet units in a direction parallel to the first axis. The magnet may include a third magnet unit and a fourth magnet unit positioned on the second side of either the moving part or the fixed part, wherein the second side is located on opposite sides in a direction parallel to the first axis, and the coil may include third and fourth coil units that are positioned in the other of the moving part and the fixed part and correspond to the third and fourth magnet units in a direction parallel to the first axis, and the ball member may include a third ball and a fourth ball positioned to overlap with a second axis intersecting the first axis, and the position sensor may include a second sensor positioned to overlap with the second axis.

[0008] The camera device includes a second sensing magnet positioned to correspond to the second sensor so as to overlap with the second axis, and the second sensor can detect the second sensing magnet. The camera device includes a tilting guide portion comprising a body positioned between the fixed portion and the moving portion and first to fourth extension portions extending upward from the body, and each of the first to fourth balls may be positioned in any one of the corresponding first to fourth extension portions.

[0009] The first to fourth balls may be positioned higher than the image sensor. The first sensing magnet may be placed between the third magnet unit and the fourth magnet unit. The first and second sensing magnets may be placed in the moving part, and the first and second sensors may be placed in the fixed part. Effects of the invention

[0010] In the embodiment, the displacement of the OIS moving part due to the tilting of the OIS moving part can be detected using sensing magnets, and as a result, calibration for OIS feedback driving can be easy and simple.

[0011] 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.

[0012] 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. Brief explanation of the drawing

[0013] FIG. 1 is a perspective view of a camera device according to an embodiment. Figure 2 is an exploded perspective view of the camera device of Figure 1. FIG. 3 is a perspective view of a camera device excluding the cover member. FIG. 4 shows a stopper, bobbin, housing, magnets, circuit board, coil, ball member, and sensing magnets. Figure 5 shows a housing, an OIS magnet, a circuit board, a position sensor, and a coil. FIG. 6 shows an image sensor part, a tilting guide part, a magnetic body, and an OIS ball member. FIG. 7 is a lower perspective view of an image sensor part, a tilting guide part, a magnetic body, and an OIS ball member. Figure 8 shows a base, a magnetic material, and an OIS sensor. Figure 9 shows a base, a circuit board, an OIS coil, a magnetic material, and an OIS position sensor. FIG. 10a is a cross-sectional view of the camera device in the AB direction of FIG. 3. FIG. 10b is a cross-sectional view of the camera device in the CD direction of FIG. 3. FIG. 10c is a cross-sectional view of the camera device in the EF direction of FIG. 3. FIG. 10d is a cross-sectional view of a camera device in the EF direction of FIG. 3, in which the first and second sensors and the first and second sensing magnets are shown. FIG. 10e is a cross-sectional view of a camera device including a lens module. Figure 11 is a functional block diagram of the control unit. FIG. 12a is intended to illustrate the first axis tilting of a camera device. FIG. 12b is intended to illustrate the second axis tilting of the camera device. FIG. 13a shows a perspective view of an optical device according to an embodiment. FIG. 13b shows a perspective view of an optical device according to another embodiment. Figure 14 shows a configuration diagram of the optical device illustrated in Figures 13a and 13b. Specific details for implementing the invention

[0014] The following describes an embodiment of the present invention that can specifically realize the above objectives, with reference to the attached drawings.

[0015] 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.

[0016] Additionally, relational terms used below, such as “first” and “second,” “upper / superior / above,” and “lower / subordinate / 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.

[0017] 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."

[0018] 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'.

[0019] 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."

[0020] 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 "calculate," "detect," or "generate."

[0021] 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."

[0022] 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 the 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), a ball member (21), and sensing magnets (80A, 80B), 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 FIG. 8 is a lower perspective view of a guide part (60), a magnetic body (31), and an OIS ball member (36); FIG. 9 is a base (210), a magnetic body (32), and an OIS sensor (24); 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 in the EF direction of FIG. 3 showing a first sensor (24A), a second sensor (24B), a first sensing magnet (80A), and a second sensing magnet (80B); FIG. 10e is FIG. 11 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), and FIG. 12b is for explaining the second axis tilting of the camera device (200).

[0023] Referring to FIGS. 1 to 12b, 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."

[0024] 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.

[0025] 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).

[0026] The OIS moving part (100, see FIG. 2) may move or be tilted with respect to the first axis (e.g., X-axis (e.g., Pitch)) that intersects the optical axis (or optical axis direction) with respect to the fixed part. Additionally, the OIS moving part may move or be tilted with respect to the second axis (e.g., Y-axis (e.g., Yaw)) that intersects the optical axis (or optical axis direction) with respect to the fixed part. The first axis may intersect the optical axis (or optical axis direction), and the second axis 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.

[0027] 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.

[0028] 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 configuration coupled to the housing (140), such as a coil (120), sensing magnets (80A, 80B), a circuit board (190), and a position sensor (170). The OIS moving unit may include a configuration coupled to the sensor base (270), such as a magnetic body (31).

[0029] 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).

[0030] 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.

[0031] 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.

[0032] 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).

[0033] 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).

[0034] 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).

[0035] 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.

[0036] 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).

[0037] 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.

[0038] 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 a ball member (B1) may be formed in the relief portion (15A) of the housing (140), and a groove (47B) for placing or receiving a part of a ball member (B2) may be formed in the relief portion (15B) of the housing (140).

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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).

[0043] 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).

[0044] 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).

[0045] For AF feedback driving, the camera device (200) may further include a position sensor (170). The position sensor (170) may detect the position or displacement of the bobbin (110) in the direction of the optical axis. The position sensor (170) may be positioned opposite the magnet (130) and may detect the magnet (130). In another embodiment, a sensing magnet facing 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. 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).

[0046] 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).

[0047] 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).

[0048] 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).

[0049] The first magnet unit (40A) and the second magnet unit (40B) may be spaced apart in the second axis direction, and 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).

[0050] 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.

[0051] Sensing magnets (80A, 80BA) may be placed in the OIS moving part. Sensing magnets (80A, 80B) may be placed in the housing (140) or coupled with the housing (140). The first sensing magnet (80A) may be placed on the second side (41B) of the housing (140). In another embodiment, the sensing magnet (80A) may be placed on the first side (41A) of the housing (140). The second sensing magnet (80B) may be placed on the third side (41C) of the housing (140). A groove (149) for placing the first sensing magnet (80A) may be formed in the second side (41B) of the housing (140). A groove may be formed in the third side (41C) of the housing (140) for arranging a second sensing magnet (80B). For example, the second sensing magnet (80B) may be coupled to the relief portion (15C) of the housing (140). The first sensing magnet (80A) may be arranged to overlap with the first axis (601), and the second sensing magnet (80B) may be arranged to overlap with the second axis (602). Each of the first and second sensing magnets (80A, 80B) may be a two-pole magnet or a four-pole magnet. For example, each of the first and second sensing magnets (80A, 80B) may include an N pole and a S pole facing each other in the direction of the optical axis.

[0052] 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).

[0053] 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.

[0054] 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."

[0055] 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 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).

[0056] 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.

[0057] The image sensor unit (350) may be positioned below the bobbin (110). The image sensor unit (350) may be positioned below the housing (140) and may be coupled with 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).

[0058] 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).

[0059] 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).

[0060] 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.

[0061] 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."

[0062] 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).

[0063] 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).

[0064] 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).

[0065] 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, 71D).

[0066] 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 side (71C, 71D) of the base (210). The grooves (75A, 75B) may be located lower than the upper surface of the side (71C, 71D) of the base (210) and higher than the upper surface of the lower (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).

[0067] 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).

[0068] 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 a first axis (e.g., Y-axis) or a second axis (e.g., X-axis) or rotate it by a preset angle through interaction with the OIS magnet (40) placed on the OIS moving part.

[0069] 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).

[0070] 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.

[0071] 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).

[0072] 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).

[0073] 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). The first to fourth coil units (50A to 50D) may be electrically connected to corresponding terminals among the terminals (251) of the circuit board (250).

[0074] 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.

[0075] The OIS position sensor (24) may include a first sensor (24A) corresponding to, opposite to, or overlapping with the first sensing magnet (80A) in the first axis direction, and a second sensor (24B) corresponding to, opposite to, or overlapping with the second sensing magnet unit (80B) in the second axis direction. The first sensor (24A) may be placed on the second side (71B) of the base (210). In another embodiment, the first sensor (24A) may be placed on the first side (71A) of the base (210). The second sensor (24B) may be placed on the third side (71C) of the base (210). The first sensor (24A) may be placed on the second substrate (250B) and may be electrically connected to the second substrate (250B). In another embodiment, the first sensor (24A) may be placed on the first substrate (250A) and may be electrically connected to the first substrate (250A). The second sensor (24B) may be placed on the third substrate (250C) and may be electrically connected to the third substrate (250C).

[0076] The first sensor (24A) may be positioned to overlap with the first axis (601). The second sensor (24B) may be positioned to overlap with the second axis (602). The first sensor (24A) may be positioned within the escape portion (26B) of the base (210), and the second sensor (24B) may be positioned within the escape portion (26C) of the base (210).

[0077] The first sensor (24A) can detect the first sensing magnet (80A), and the second sensor (24B) can detect the second sensing magnet (40B). Each of the first and second sensors (24A, 24B) may be a Hall sensor. Each of the first and second sensors (24A, 24B) may include first and second input terminals for inputting power or driving signals and first and second output terminals for outputting output signals.

[0078] 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 and second sensors (24A, 24B). The control unit (830) may receive outputs (or output signals) of the first and second sensors (24A, 24B). 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). The control unit (830) may include an analog-to-digital converter (530) that receives output signals from each of the first and second sensors (24A, 24B) and outputs a data value (or code value) based on the result of converting the received output signals from analog to digital. The control unit (830) may control a driving signal supplied to each of the first to fourth coil units (50A to 50D) using the outputs of the first and second sensors (24A, 24B).

[0079] 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) may be coupled to the base (210). A through hole (303) may be formed in the top plate (302) of the cover member (300) to expose a lens (not shown) to external light. An opening (304) may be formed in the side plate (302) of the cover member (300) to expose a terminal (251) of a circuit board (250).

[0080] The following explains the support section.

[0081] 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) positioned between the sensor base (270) and the base (210). The tilting guide member (60) may be expressed as a "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 member (60) may be tiltable or rotatable by a preset angle with respect to a first axis or a second axis.

[0082] 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).

[0083] 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. Each end of the extension portions (17A to 17D) may be formed as an injection molded part, and a groove may be formed at each end of the extension portions (17A to 17D) for placing at least a portion of the ball members (B1 to B4).

[0084] 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.

[0085] 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 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).

[0086] 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).

[0087] The support member may include ball members (B1, B2) disposed between the tilting guide member (60) and the housing (140), and ball members (B3, B4) disposed between the tilting guide member (60) and the base (210). The first ball member (B1) may be disposed on the first side (41A) of the housing (140), and the second ball member (B2) may be disposed on the second side (41B) of the housing (140). The third ball member (B3) may be disposed on the third side (71C) of the base (210), and the fourth ball member (B4) may be disposed on the fourth side (71D) of the base (210). For example, the first ball member (B1) may be positioned in the center of the first side (41A) of the housing (140), and the second ball member (B2) may be positioned in the center of the second side (41B) of the housing (140). The third ball member (B3) may be positioned in the center of the third side (71C) of the base (210), and the fourth ball member (B4) may be positioned in the center of the fourth side (71D) of the base (210).

[0088] The first ball member (B1) may be positioned between the first side (41A) of the housing (140) and the first extension (17A) of the tilting guide part (60). The first ball member (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 part (60). The second ball member (B2) may be positioned between the second side (41B) of the housing (140) and the second extension (17B) of the tilting guide part (60). The second ball member (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 part (60).

[0089] The third ball member (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 member (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 member (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 member (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).

[0090] 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 or sliding motion. In the embodiment, four ball members (B1 to B4) are exemplified, but in other embodiments, the number of ball members may be two, three, or five or more.

[0091] 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).

[0092] 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. 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).

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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).

[0098] For hand shake correction, the OIS drive unit may tilt the OIS moving unit 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). The drive unit of the camera device (200) may include an AF drive unit and an OIS drive unit.

[0099] Referring to FIG. 12a and FIG. 12b, a first electromagnetic force (F1) may be generated by the interaction between the first magnet unit (40A) and the first coil unit (50A), a second electromagnetic force (F2) may be generated by the interaction between the second magnet unit (40B) and the second coil unit (50B), a third electromagnetic force (F3) may be generated by the interaction between the third magnet unit (40C) and the third coil unit (50C), and a fourth electromagnetic force (F4) may be generated by the interaction between the fourth magnet unit (40D) and the fourth coil unit (50D).

[0100] In FIG. 12a, the OIS moving part (100) can be tilted or rotated within a preset angle range with respect to the first axis (601) (or ball members (B1, B2)). In FIG. 12b, the OIS moving part (100) can be tilted or rotated within a preset angle range with respect to the second axis (602) (or ball members (B3, B4)). In the embodiment, when performing hand shake correction or shake correction, the lens module (400) and the image sensor (810) can be simultaneously tilted along the X-axis or Y-axis by the same direction and the same angle. The first sensor (24A) can detect the displacement of the OIS moving part (100) tilting along the second axis (602), and the second sensor (24B) can detect the displacement of the OIS moving part (100) tilting along the first axis (601).

[0101] The first axis (601) may be a straight line perpendicular to the optical axis and passing through the first and second ball members (B1, B2). The first axis (601) may pass through the optical axis (or center (603)). Alternatively, the first axis (601) may be a straight line passing through the optical axis (or center (603)) and perpendicular to the first side (71A) of the fixed part (e.g., base (210)). The center (603) may be the center of the OIS moving part and the point through which the optical axis (OA) passes. Alternatively, the center (603) may be the center of the opening of the bobbin (110) or the center of the lens module (400). The first axis (601) may be a straight line passing between the first magnet unit (40A) and the second magnet unit (40B). Alternatively, the first axis (601) may be a straight line passing between the third magnet unit (40C) and the fourth magnet unit (40D).

[0102] The first axis (601) may be a straight line connecting the center of the first ball member (B1) and the center of the second ball member (B2). The second axis (602) may be a straight line perpendicular to the optical axis and passing through the third and fourth ball members (B3, 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).

[0103] Referring to FIG. 10c, 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). 제1축(601)은 Y축이고, 제2축(602)은 X축이고, 중심(603)은 원점인 좌표 평면에서, 상기 좌표 평면의 각 사분면에 서로 대응하는 OIS 코일 유닛과 OIS 마그넷 유닛이 배치된다. 또한 제1 및 제2 볼 부재들(B1, B2)은 제1축(601)과 중첩되거나 또는 제1축(601)에 정렬될 수 있고, 제3 및 제4 볼 부재들(B2, B4)은 제2축(602)과 중첩되거나 또는 제2축(602)에 정렬될 수 있다.

[0104] 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 (100) can be tilted using all four electromagnetic forces (F1 to F4). Thus, in the embodiment, the driving force for tilting the OIS moving part (100) can be increased, the heavy lens module (400) can be tilted, and the resolution of the image sensor (810) can be improved.

[0105] The first sensing magnet (80A) may be positioned between the third magnet unit (40C) and the fourth magnet unit (40D). In the second axis direction, the first sensing magnet (80A) may overlap with the third magnet unit (40C) and the fourth magnet unit (40D).

[0106] Referring to FIGS. 10a and 10b, the first and second sensors (24A, 24B) may be positioned higher than the ball members (B1 to B4). The first and second sensing magnets (80A, 80B) may be positioned higher than the ball members (B1 to B4). Additionally, the first and second sensing magnets (80A, 80B) may be positioned higher than the extensions (17A to 17D) of the tilting guide member (60). For example, the first sensing magnet (80A) may overlap with the ball member (B2) in the optical axis direction. In another embodiment, the first sensing magnet (80A) may not overlap with the ball member (B2) in the optical axis direction. The second sensing magnet (80B) may not overlap with the ball member (B3) in the optical axis direction. In another embodiment, the second sensing magnet (80B) may overlap with the ball member (B3) in the direction of the optical axis.

[0107] The second sensing magnet (80B) may be located on the opposite side of the coil (120) with respect to the magnetic body (70). For example, the second sensing magnet (80B) may overlap with the magnetic body (70) in the second axis direction. The second sensing magnet (80B) may overlap with the coil (20) in the second axis direction. The second sensing magnet (80B) may be attached to the first surface of the magnetic body (70). The first surface of the magnetic body (70) may be the opposite side of the second surface of the magnetic body (70) facing the circuit board (190).

[0108] The first sensor (24A) can detect the displacement of the OIS moving part (100) tilting with respect to the second axis (602) based on the result of detecting the first sensing magnet (80A). The second sensor (24B) can detect the displacement of the OIS moving part (100) tilting with respect to the second axis (601) based on the result of detecting the second sensing magnet (80B). To this end, calibration of the mutual relationship between the output of the first sensor (24A) and the displacement of the OIS moving part can be performed, and calibration of the mutual relationship between the output of the second sensor (24B) and the displacement of the OIS moving part can be performed. Since the linearity of the mutual relationship between the output of the first sensor (24A) (or the output of the second sensor (24B)) and the displacement of the OIS moving part is good, calibration for OIS feedback driving can be easy.

[0109] In the embodiment, the displacement of the OIS moving part due to tilting of the first axis (601) or the second axis (603) of the OIS moving part can be detected using sensing magnets (80A, 80B), and as a result, calibration for OIS feedback driving can be easy and simple, the processing load of the processing unit (e.g., CPU) can be reduced, and power consumption can be reduced.

[0110] 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.

[0111] In another embodiment, the sensing magnets (80A, 80B) shown in FIG. 10d may be omitted, and the sensors (24A, 24B) may detect the driving magnet units (40A to 40D). For example, the sensors (24A, 24B) may detect the driving magnet units (40A to 40D). Or, for example, the first sensor (24A) may detect the magnet units (40C, 40D) or detect the displacement of the magnet units (40C, 40D). The second sensor (24B) may detect the magnet units (40A, 40C) (or the displacement of the magnet units (40A, 40C)) or the AF magnet (130) (or the displacement of the AF magnet (130).

[0112] 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)). 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)). In this case, 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). 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 vertical. In another embodiment, the positions of the sensing magnets (80A, 80B) and the sensors (924A, 4B) may be opposite to each other.

[0113] 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.

[0114] FIG. 13a shows a perspective view of an optical device (200A) according to an embodiment, FIG. 13b shows a perspective view of an optical device (200X) according to another embodiment, and FIG. 14 shows a configuration diagram of the optical device (200A) shown in FIG. 13a and FIG. 13b.

[0115] The camera device (200) included in the embodiment of FIG. 13a 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. 13b 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. 13b 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.

[0116] Referring to FIGS. 13a, 13b, and 14, 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).

[0117] The body (850) is in the form of a bar, but is not limited thereto, and can be of various structures such as a slide type, folder type, swing type, swivel type in which two or more sub-bodies are combined to move relative to each other.

[0118] The wireless communication unit (710) may be configured to include one or more modules that enable wireless communication between the optical device (200A) and the wireless communication system or between the optical device (200A) and the network where the optical device (200A) is located. For example, the wireless communication unit (710) may be configured to include a broadcast reception module (711), a mobile communication module (712), a wireless internet module (713), a short-range communication module (714), and a location information module (715).

[0119] The A / V (Audio / Video) input unit (720) is for inputting an audio signal or a video signal and may include a camera (721) and a microphone (722), etc. The camera (721) may include a camera device (200) according to the embodiment.

[0120] The sensing unit (740) can generate a sensing signal to control the operation of the optical device (200A) by detecting the current state of the optical device (200A), such as the open / closed state of the optical device (200A), the position of the optical device (200A), whether there is user contact, the orientation of the optical device (200A), and the acceleration / deceleration of the optical device (200A). For example, if the optical device (200A) is in the form of a slide phone, it can sense whether the slide phone is open or closed. In addition, it is responsible for sensing functions related to whether power is supplied by the power supply unit (790) and whether an external device is connected to the interface unit (770).

[0121] The input / output unit (750) is intended to generate input or output related to sight, hearing, or touch. The input / output unit (750) can generate input data for controlling the operation of the optical device (200A) and can also display information processed by the optical device (200A).

[0122] The input / output unit (750) may include a keypad unit (730), a display module (751), an audio output module (752), and a touch screen panel (753). The keypad unit (730) may generate input data by keypad input.

[0123] The display module (751) may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module (751) may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display.

[0124] The sound output module (752) can output audio data received from the wireless communication unit (710) in call signal reception, call mode, recording mode, voice recognition mode, or broadcast reception mode, or output audio data stored in the memory unit (760).

[0125] The touch screen panel (753) can convert a change in capacitance caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal.

[0126] The memory unit (760) may store a program for processing and controlling the control unit (780), and may temporarily store input / output data (e.g., phone book, message, audio, still image, photo, video, etc.). For example, the memory unit (760) may store an image captured by the camera (721), such as a photo or video.

[0127] The interface section (770) serves as a passage connecting to an external device connected to the optical device (200A). The interface section (770) receives data from the external device, supplies power to transmit it to each component inside the optical device (200A), or allows data inside the optical device (200A) to be transmitted to the external device. For example, the interface section (770) may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0128] A controller (780) can control the overall operation of an optical device (200A). For example, the controller (780) can perform related control and processing for voice calls, data communication, video calls, etc. The controller (780) may be equipped with a multimedia module (781) for multimedia playback. The multimedia module (781) may be implemented within the controller (780) or may be implemented separately from the controller (780). The controller (780) can perform pattern recognition processing to recognize handwriting input or drawing input performed on a touchscreen as characters and images, respectively.

[0129] The power supply unit (790) can receive external power or internal power under the control of the control unit (780) and supply power necessary for the operation of each component.

[0130] 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. 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.

Claims

Claim 1 A camera device comprising: a fixed part; a moving part including an image sensor; a magnet and a coil interacting to allow the moving part to move relative to the fixed part; a ball member disposed between the fixed part and the moving part; and a position sensor for detecting displacement of the moving part, wherein the magnet includes a first magnet unit and a second magnet unit disposed on a first side of either the moving part or the fixed part, the ball member includes a first ball and a second ball disposed to overlap with a first axis intersecting the first side, and the position sensor includes a first sensor disposed to overlap with the first axis. Claim 2 In claim 1, the first sensor is a camera device that does not overlap with the magnet in a direction parallel to the first axis. Claim 3 A camera device according to claim 1, comprising a first sensing magnet arranged to correspond to the first sensor so as to overlap with the first axis, wherein the first sensor detects the first sensing magnet. Claim 4 In paragraph 3, the first sensor is a camera device that overlaps with the first ball in the direction of the optical axis. Claim 5 A camera device according to claim 1, wherein the first axis is a straight line perpendicular to the optical axis and passing between the first and second magnet units. Claim 6 In paragraph 3, the camera device wherein the first sensor and the first sensing magnet are positioned higher than the first and second balls. Claim 7 A camera device according to paragraph 3, wherein the first sensor is disposed in the fixed part and the first sensing magnet is disposed in the movable part. Claim 8 In claim 1, the first ball is a camera device disposed between the first magnet unit and the second magnet unit. Claim 9 A camera device according to claim 1, wherein the coil is disposed in the other of the moving part and the fixed part, and includes first and second coil units corresponding to the first and second magnet units in a direction parallel to the first axis. Claim 10 A camera device according to claim 9, wherein the magnet comprises a third magnet unit and a fourth magnet unit disposed on a second side of either the moving part or the fixed part, and the second side is located opposite each other in a direction parallel to the first axis, the coil comprises a third and fourth coil units disposed on the other of the moving part and the fixed part and corresponding to the third and fourth magnet units in a direction parallel to the first axis, the ball member comprises a third ball and a fourth ball disposed to overlap with a second axis intersecting the first axis, and the position sensor comprises a second sensor disposed to overlap with the second axis. Claim 11 In claim 10, a camera device comprising a second sensing magnet positioned to correspond to the second sensor so as to overlap with the second axis, wherein the second sensor detects the second sensing magnet. Claim 12 A camera device according to claim 10, comprising a tilting guide portion including a body disposed between the fixed portion and the movable portion and first to fourth extension portions extending upward from the body, wherein each of the first to fourth balls is disposed in a corresponding one of the first to fourth extension portions. Claim 13 In item 10, the above first to fourth balls are a camera device positioned higher than the image sensor. Claim 14 In item 10, the first sensing magnet is a camera device positioned between the third magnet unit and the fourth magnet unit. Claim 15 A camera device according to claim 11, wherein the first and second sensing magnets are disposed in the moving part and the first and second sensors are disposed in the fixed part.

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