Aperture module, and lens module and camera device including same

Abstract

An embodiment comprises: a lens barrel; a plurality of lenses disposed in the lens barrel in the optical axis direction; and an aperture module disposed between two adjacent lenses among the plurality of lenses, wherein the aperture module comprises a coupling part which is coupled to at least one of the two lenses.

Description

Aperture module, and lens module and camera device including the same

[0001] The embodiment relates to an aperture module, a lens module including the same, and a camera device.

[0002] Camera devices are devices that capture images or videos of subjects, and are installed on portable devices, drones, vehicles, etc. To improve image quality, camera devices may have image stabilization (IS) functions, such as optical image stabilizers (OIS) and autofocusing (AF), which compensate for or prevent image shaking caused by the user's movements.

[0003] The embodiment provides a lens module and a camera device capable of performing self-alignment between lenses using an aperture module.

[0004] The embodiment provides an aperture module capable of accurately changing the opening of an aperture portion for a large-diameter lens to a desired size, a lens module including the same, and a camera device.

[0005] A lens module according to an embodiment includes a lens barrel; a plurality of lenses arranged in an optical axis direction within the lens barrel; and an aperture module arranged between two adjacent lenses among the plurality of lenses, wherein the aperture module includes a coupling portion for coupling with at least one of the two lenses.

[0006] The above-mentioned coupling portion may be for self-alignment with at least one of the two lenses. The at least one lens may include a protrusion that contacts the coupling portion of the aperture module. The coupling portion of the aperture module may overlap with the protrusion of the at least one lens in a direction perpendicular to the optical axis direction.

[0007] The above-described coupling part may include a first coupling part for coupling with one of the two lenses, the first lens, and a second coupling part for coupling with the other of the two lenses, the second lens.

[0008] The first coupling portion may include a first alignment protrusion, the second coupling portion may include a second alignment protrusion, the first lens may include a first protrusion that engages with the first alignment protrusion, and the second lens may include a second protrusion that engages with the second alignment protrusion.

[0009] The above aperture module may include a carrier including the coupling portion; and an aperture portion disposed within the carrier and capable of varying the amount of incident light.

[0010] The carrier may include a first carrier and a second carrier positioned below the first carrier and coupled with the first carrier, and the coupling portion may include a first alignment protrusion disposed on the first carrier and coupled with a first lens, which is one of the two lenses; and a second alignment protrusion disposed on the second carrier and coupled with a second lens, which is the other of the two lenses.

[0011] The above aperture portion may include a blade portion that adjusts the size of the opening through which light is incident. The lower surface of the second alignment protrusion may be positioned lower than the lowermost surface of the blade portion.

[0012] Among the plurality of lenses, the lens positioned at the lowest side may be positioned closer to the lower surface of the second alignment protrusion than to the lower surface of the blade portion.

[0013] The above aperture module may be arranged between the second lens and the third lens from the top among the plurality of lenses.

[0014] The aperture module is positioned below the first lens and above the second lens, and a distance between the first coupling portion and the optical axis may be smaller than a distance between the second coupling portion and the optical axis.

[0015] The first lens may be positioned above the aperture module and the second lens may be positioned below the aperture module, the first lens may include a protrusion corresponding to the first coupling portion of the aperture module, and the second lens may include a protrusion corresponding to the second coupling portion of the aperture module.

[0016] The protrusion of the first lens may be positioned further from the optical axis than the first coupling portion, and the protrusion of the second lens may be positioned closer to the optical axis than the second coupling portion.

[0017] According to another embodiment, a lens module includes a lens barrel; a plurality of lenses sequentially arranged in an optical axis direction within the lens barrel; and an aperture module arranged within the lens barrel, wherein the aperture module includes a carrier arranged between neighboring first and second lenses among the plurality of lenses and an aperture portion arranged within the carrier and configured to vary an incident amount of incident light, wherein the first lens is arranged on the second lens, and the carrier includes a first coupling portion for self-aligning coupling with the first lens and a second coupling portion for self-aligning coupling with the second lens.

[0018] The first connecting portion may be a protrusion protruding toward the first lens, and the second connecting portion may be a protrusion protruding toward the second lens.

[0019] The first lens may include a first protrusion coupled with the first coupling portion, and the second lens may include a second protrusion coupled with the second coupling portion.

[0020] The first lens includes a first optical portion and a first flange portion extending from the first optical portion and having the first protrusion disposed thereon, the second lens includes a second optical portion and a second flange portion extending from the second optical portion and having the second protrusion disposed thereon, the first coupling portion may be in contact with the first flange portion, and the second coupling portion may be in contact with the second flange portion. The optical axes of the plurality of lenses may be closer to the first coupling portion than to the first protrusion. The optical axes of the plurality of lenses may be closer to the second protrusion than to the second coupling portion. The optical axes of the plurality of lenses may be closer to the first coupling portion than to the second coupling portion.

[0021] According to another embodiment, a lens module includes a lens barrel; a plurality of lenses sequentially arranged in an optical axis direction within the lens barrel; and an aperture module arranged within the lens barrel, wherein the aperture module includes a carrier arranged between neighboring first and second lenses among the plurality of lenses and an aperture portion arranged within the carrier and configured to vary an incident amount of incident light, wherein the carrier includes a first carrier positioned above the aperture portion and a second carrier positioned below the aperture portion and coupled with the first carrier, wherein the first carrier includes a first coupling portion for coupling with the first lens, and the second carrier includes a second coupling portion for coupling with the second lens.

[0022] The first lens may include a first protrusion that engages with the first coupling portion, and the second lens may include a second protrusion that engages with the second coupling portion.

[0023] A camera device according to an embodiment includes a lens module according to an embodiment; a lens driving device for moving the lens module in the direction of the optical axis; and an image sensor.

[0024] An aperture module according to an embodiment includes: a blade portion; a ring-shaped magnetic member connected to the blade portion and including a plurality of magnet units; a coil including a plurality of coil units corresponding to the plurality of magnet units and moving the magnetic member by interaction with the magnetic member; and a position sensor detecting a displacement of the magnetic member, wherein the position sensor includes a first sensor and a second sensor, and the first sensor and the second sensor overlap with the plurality of magnet units in the optical axis direction.

[0025] The first sensor may be disposed within a hollow space of one of two coil units corresponding to two different magnet units among the plurality of magnet units, and the second sensor may be disposed within a hollow space of the other of the two coil units.

[0026] The first sensor and the second sensor may be positioned outside the hollows of two coil units corresponding to two different magnet units among the plurality of magnet units.

[0027] When viewed from above, the position sensor may be positioned between the inner and outer surfaces of the magnetic member. When viewed from above, the position sensor may be positioned closer to the outer surface of the magnetic member than to the inner surface. When viewed from above, the position sensor may be positioned to overlap the outer surface of the magnetic member in the direction of the optical axis.

[0028] The aperture module may include a fixed shaft coupled to the blade portion; and a driving shaft connecting the blade portion and the magnetic member.

[0029] According to another embodiment, an aperture module includes: a blade portion; a ring-shaped magnetic member connected to the blade portion; a coil that moves the magnetic member by interaction with the magnetic member; and a position sensor that detects displacement of the magnetic member. When viewed from above, the position sensor may be disposed between an inner surface and an outer surface of the magnetic member. The position sensor may be located on the inner side of the hollow portion of the coil. The position sensor may be located on the outer side of the hollow portion of the coil. The position sensor may be disposed closer to the outer surface than the inner surface of the magnetic member.

[0030] The position sensor may overlap the outer surface of the magnetic member in the direction of the optical axis. The position sensor may include a first portion that overlaps the magnetic member in the direction of the optical axis and a second portion that does not overlap the magnetic member in the direction of the optical axis.

[0031] The aperture module includes a fixed shaft coupled to the blade portion; and a driving shaft connecting the blade portion and the magnetic member, and when viewed from above, the position sensor may be positioned closer to the driving shaft than the coil.

[0032] The above aperture module includes a circuit board electrically connected to the coil, and the position sensor can be disposed on the circuit board.

[0033] A lens module according to an embodiment may include a lens barrel; a plurality of lenses arranged in the direction of an optical axis within the lens barrel; and an aperture module according to an embodiment. The aperture module may be arranged between two adjacent lenses among the plurality of lenses.

[0034] In an embodiment, self-alignment between lenses can be performed using an aperture module.

[0035] In the embodiment, since the aperture module is located inside the lens barrel and between the lenses, the required diameter of the opening of the blade portion of the aperture module can be designed to be small, and the size of the aperture module can be reduced.

[0036] The embodiment can increase the speed of changing the size of the opening of the blade section and improve the camera performance.

[0037] The embodiment can reduce the thickness of the blade and prevent sagging of the blade.

[0038] The embodiment can design the aperture module to have a smaller diameter, thereby reducing the TTL of the lens module.

[0039] In an embodiment, by detecting a magnetic absence using multiple position sensors, the opening of the diaphragm for a large-diameter lens can be accurately changed to a desired size.

[0040] In an embodiment, the performance of the position sensor can be improved by placing the position sensor away from the coil, thereby reducing the influence of the coil's magnetic field on the position sensor.

[0041] Figure 1 is a cross-sectional view of a camera device according to an embodiment.

[0042] Fig. 2a is an exploded perspective view of the aperture module of the camera device of Fig. 1.

[0043] Fig. 2b is an exploded perspective view of the aperture module in a different direction from Fig. 2a.

[0044] Figure 3 is a cross-sectional view of the aperture module.

[0045] Figure 4a is a diagram showing the combination of a magnetic member and a blade portion.

[0046] Figure 4b is a perspective view of a magnetic member and a blade portion according to another embodiment.

[0047] Figure 5a illustrates an arrangement of a magnetic member, a coil, and a drive shaft according to one embodiment.

[0048] Figure 5b illustrates an arrangement of a magnetic member, a coil, and a drive shaft according to another embodiment.

[0049] Figure 6 is an enlarged view of the lenses and aperture module.

[0050] FIG. 7 illustrates a cross-sectional view of one embodiment of a lens driving device, an image sensor, a circuit board, and a sensor base.

[0051] FIGS. 8A to 8E illustrate a method for manufacturing a lens module of a camera device according to an embodiment.

[0052] FIG. 9a is an exploded perspective view of an aperture module according to another embodiment of a camera device.

[0053] Figure 9b is an exploded perspective view of the aperture module of Figure 9a in another direction.

[0054] FIG. 10a is a perspective view of an aperture module according to another embodiment.

[0055] Figure 10b is a perspective view of the aperture module of Figure 10a in another direction.

[0056] Fig. 11 shows the arrangement of the aperture according to another embodiment.

[0057] FIG. 12A is a plan view of a magnetic member, a coil, and a position sensor according to an embodiment.

[0058] Figure 12b shows the arrangement of position sensors according to another embodiment.

[0059] Figure 12c illustrates the arrangement of position sensors according to another embodiment.

[0060] Figure 12d shows the arrangement of position sensors according to another embodiment.

[0061] Figure 12e illustrates the arrangement of position sensors according to another embodiment.

[0062] FIG. 12f illustrates the arrangement of position sensors according to another embodiment.

[0063] Figure 13a illustrates the arrangement of position sensors according to another embodiment.

[0064] Figure 13b illustrates the arrangement of position sensors according to another embodiment.

[0065] FIG. 13c illustrates the arrangement of position sensors according to another embodiment.

[0066] Figure 14a shows the polarity according to one embodiment of the magnet unit.

[0067] Figure 14b shows polarity according to another embodiment of the magnet unit.

[0068] Figure 14c shows the polarity according to another embodiment of the magnet unit.

[0069] Figure 15a shows the arrangement of the sensing magnet and position sensor.

[0070] Fig. 15b shows another embodiment of the sensing magnet of Fig. 15a.

[0071] Figure 16a shows a perspective view of an optical device according to an embodiment.

[0072] FIG. 16b shows a perspective view of an optical device according to another embodiment.

[0073] Fig. 17 shows a schematic diagram of the optical device illustrated in Figs. 16a and 16b.

[0074] Hereinafter, embodiments of the present invention that can specifically achieve the above purpose will be described with reference to the attached drawings.

[0075] In the description of the embodiments, when it is described that each element is formed "on or under", "on or under" includes both cases where two elements are in direct contact with each other or where one or more other elements are formed by being disposed indirectly between the two elements. In addition, when it is expressed as "on or under", it can include the meaning of not only the upward direction but also the downward direction based on one element.

[0076] Additionally, relational terms such as “first” and “second,” “upper / upper / lower,” and “lower / lower / below” used hereinafter may be used only to distinguish one entity or element from another entity or element, without necessarily requiring or implying any physical or logical relationship or order between such entities or elements. In addition, the same reference numbers represent the same elements throughout the description of the drawings.

[0077] Furthermore, terms such as "include," "comprise," or "have" described above, unless specifically stated otherwise, imply that the corresponding component may be included, and thus should be interpreted to include other components rather than excluding other components. Furthermore, terms such as "corresponding" described above may include at least one of the meanings of "opposite" or "overlapping."

[0078] Hereinafter, a camera device according to an embodiment and an optical device including the same will be described 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 another coordinate system, and the embodiment is not limited thereto. In each drawing, the X-axis and the Y-axis may be axes in a direction perpendicular to the Z-axis, which is the optical axis direction (OA).

[0079] Additionally, the Z-axis direction, which is the optical axis direction, may be referred to as 'one of the first to third directions', the X-axis direction may be referred to as 'another of the first to third directions', and the Y-axis direction may be referred to as 'the remaining one of the first to third directions'. For example, the first direction may be a direction perpendicular to the imaging area of ​​the image sensor.

[0080] Additionally, the X-axis (or Y-axis) may be referred to as a “first horizontal axis”, the X-axis (or Y-axis) direction may be referred to as a “first horizontal direction”, the Y-axis (or X-axis) may be referred to as a “second horizontal axis”, and the Y-axis (or X-axis) direction may be referred to as a “second horizontal direction”.

[0081] For example, the optical axis direction may be the direction of the optical axis or a direction parallel to the optical axis. Also, for example, the optical axis may be the optical axis of a lens mounted on a lens barrel. Or, for example, the optical axis may be an axis that is perpendicular to the imaging area of ​​the image sensor and passes through the center of the imaging area. Also, the expression "terminal" below may be expressed as a pad, an electrode, or a conductive layer.

[0082] In addition, in the embodiment, in the coupling between the protrusion and the hole for coupling two components to each other, one of the components may be a coupling protrusion (or coupling hole), and the other side may be a corresponding coupling hole (or coupling protrusion).

[0083] A camera device according to an embodiment can perform a shake correction function and an auto-focusing function.

[0084] '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 compensate for vibration (or movement) caused by the user's hand shaking.

[0085] Additionally, the term "auto-focusing function" may refer to a function that automatically focuses on a subject by moving the lens along 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," "camera camera," or "photographer."

[0086] FIG. 1 is a cross-sectional view of a camera device (200) according to an embodiment, FIG. 2a is an exploded perspective view of an aperture module (40) of the camera device (200) of FIG. 1, FIG. 2b is an exploded perspective view of the aperture module (40) in a different direction from FIG. 2a, FIG. 4a is a combination diagram of a magnetic member (130) and a blade member (150), FIG. 4b is a perspective view of a magnetic member (130) and a blade member (150) according to another embodiment, FIG. 5a shows an arrangement of a magnetic member (130), a coil (120), and a drive shaft (61) according to one embodiment, FIG. 5b shows an arrangement of a magnetic member (130), a coil (120), and a drive shaft (61) according to another embodiment, and FIG. 6 is an enlarged view of lenses (32, 33, 34) and an aperture module (40). FIG. 7 shows a cross-sectional view of one embodiment of a lens driving device (100), an image sensor (810), a circuit board (800), and a sensor base (1310).

[0087] Referring to FIGS. 1 to 7, the camera device (200) may include a lens module (10). In addition, the camera device (200) may include a lens driving device (100) disposed below the lens module (10). The lens module (10) may be coupled to the lens driving device (100). The lens driving device (100) may move the lens module (10) in the optical axis direction. The camera device (200) may include a sensor unit (500) disposed below the lens driving device (100). For example, light passing through the lens module (10) may be incident on the sensor unit (500).

[0088] The lens module (10) may be expressed as a “lens and aperture assembly” or a “lens module (or lens unit) including a variable aperture”.

[0089] The lens driving device (100) can perform an auto-focusing operation. For example, the lens driving device (100) can include an "auto-focusing unit (101)" for performing an auto-focusing operation. The auto-focusing unit (101) can move the lens module (10) in the optical axis direction.

[0090] The lens driving device (100) may include an OIS unit (102) that performs an OIS (Optical Image Stabilization) operation for image stabilization. The OIS unit (102) may move the lens module (10) in a direction perpendicular to the optical axis.

[0091] The lens module (10) may include a lens barrel (20), a lens unit (30), and an aperture module (40). The lens barrel (20) may be coupled to the lens unit (30). The lens barrel (20) may include an internal space for accommodating the lens unit (30). For example, the lens barrel (20) may include an opening or a through hole.

[0092] The lens unit (30) can be placed within the lens barrel (20). The lens unit (30) can be coupled to the lens barrel (20). The lens unit (30) can include a plurality of lenses (31 to 36, see FIG. 8d). In FIG. 1, the lens (36) of FIG. 8d is not shown.

[0093] A plurality of lenses (31 to 36) may be sequentially arranged or arranged in the optical axis direction within the lens barrel (20). Alternatively, the lenses (31 to 36) may be stacked in the optical axis direction. In FIG. 8d, the lens unit (30) includes six lenses (31 to 36), but in other embodiments, the lens unit (30) may include two lenses, three lenses, four lenses, five lenses, or seven or more lenses.

[0094] Each of the plurality of lenses (31 to 36) may include a coupling portion (or protrusion) for alignment or self-alignment. In this case, the coupling portion of each lens may be expressed by replacing it with a protrusion, an alignment protrusion, or a self-alignment protrusion.

[0095] For example, each of the plurality of lenses (31 to 36) may include a first alignment protrusion protruding upward and a second alignment protrusion protruding downward.

[0096] The aperture module (40) can selectively control or change the amount of light incident on the camera device (200). For example, the aperture module (40) can control or change the amount of light incident on the lenses (e.g., 33, 34) of the lens unit (30) positioned below the aperture module (40).

[0097] The aperture module (40) can be placed between two adjacent lenses (32, 33) among a plurality of lenses (31 to 36).

[0098] In FIG. 1, the aperture module (40) is positioned between the second lens (32) and the third lens (33) from the top, but in other embodiments, the aperture module (40) may be positioned between the uppermost lens (31) and the lens (32). In yet other embodiments, the aperture module (40) may be positioned between the lens (33) and the lens (34).

[0099] For example, the uppermost side of the lens unit (30) may be the object side or the side closest to the subject. Additionally, the lowermost side of the lens unit (30) may be the image side or the side closest to the image sensor.

[0100] Additionally, the aperture module (40) may include a coupling portion (90) that couples with the lens portion (30). For example, the aperture module (40) may include a coupling portion (90) that couples with the lens portion (30) to be self-aligned or self-aligned with the lens portion (30).

[0101] For example, the aperture module (40) may include a coupling portion (90) for being aligned or self-aligned with at least one of two adjacent lenses (32, 33). At this time, at least one lens may include a protrusion that is coupled or in contact with the coupling portion (90). In addition, the coupling portion (90) may overlap with the protrusion of at least one lens in a direction perpendicular to the optical axis direction.

[0102] The coupling portion (90) may be alternatively expressed as an “alignment coupling portion,” a “self-aligning coupling portion,” or a “self-aligning coupling portion.” The coupling portion (90) may be coupled with the coupling portion (or self-aligning coupling portion) of an adjacent lens (32, 33). By coupling the coupling portion (90) of the aperture module (40) and the coupling portions (57, 58) of the lenses (32, 33) to each other, the adjacent lenses (32, 33) may be self-aligned to each other.

[0103] The aperture module (40) can not only control the amount of incident light, but can also serve to align or self-align neighboring lenses (32, 33) with each other. For example, the aperture module (40) can serve to position neighboring lenses (32, 33) at preset positions.

[0104] The aperture module (40) may include a carrier (50) and an aperture portion (60) disposed within the carrier (50). The aperture portion (60) may include an iris that can vary the amount of incident light. The aperture portion (60) may also be expressed as a “variable aperture portion” or a “variable aperture.”

[0105] The carrier (50) may have a shape capable of accommodating the aperture portion (60). The carrier (50) may be expressed as a holder, a case, a cover, or a frame.

[0106] For example, the carrier (50) may be in the shape of a box. For example, the carrier (50) may be in the shape of a box with an open bottom.

[0107] For example, the carrier (50) may include a body (50A) and a coupling portion (90) connected to the body (50A). For example, the coupling portion (90) may extend or protrude from the body (50A). The coupling portion (90) may have a protrusion shape. In another embodiment, the coupling portion (90) may have a groove shape.

[0108] The carrier (50) may include an opening (601). The opening (601) may be hollow. In addition, the opening (601) may be a hole penetrating the carrier (50) in the direction of the optical axis. The carrier (50) will be described in detail later.

[0109] The aperture portion (60) may include a blade portion (150) having a variable opening (301). The blade portion (150) may adjust the size of the opening (301) through which light is incident. The opening (301) of the blade portion (150) may correspond to, face, or overlap with the opening (601) of the lens portion (30) or the carrier (50) in the direction of the optical axis.

[0110] The blade portion (150) may include a plurality of blades (150A to 150D). The number of blades may be two, three, five or more. The plurality of blades (150A to 150D) may form an opening (301). For example, each of the plurality of blades (150A to 150D) may be arranged so that at least a portion thereof overlaps in the optical axis direction, thereby forming the opening (301). For example, at least a portion of the inner circumferential surface of each of the blades (150A to 150D) may include a curved or concave portion. For example, the curved or concave portion of each of the blades (150A to 150D) may be arranged in a round shape so as to face the optical axis. The shape of the opening (301) when viewed from above or in the optical axis direction may be circular, elliptical, or polygonal (e.g., triangular, square, pentagonal, or hexagonal).

[0111] The blade portion (150) may include a hole (3) for coupling with a driving shaft (61). The hole (3) of the blade portion (150) may be coupled or connected to a moving portion of the aperture module (40). The blade portion (150) may include a hole (41) for coupling with a fixed shaft (51). The hole (41) of the blade portion (150) may be coupled or connected to a fixed portion of the aperture module (40).

[0112] Within the aperture module (40), the “moving portion” may be an element or component that moves to drive the blade portion (150). The “moving portion” may include a magnetic member (130). In other embodiments, the “moving portion” may include another component (e.g., a driving plate) that couples with the magnetic member (130).

[0113] Additionally, the drive shaft (61) may be included in the moving part of the aperture module (40). Additionally, the “fixed part” in the aperture module (40) may be an element or component that does not move together with the moving part of the aperture module (40). The “fixed part” in the aperture module (40) may be a fixed element or component for driving the blade part (150). For example, the carrier (50), the housing (140), the circuit board (250), and the coil (120) may be included in the fixed part of the aperture module (40). A portion (e.g., a first portion) of the blade part (150) may be connected to the fixed part (e.g., the housing (140), and another portion (e.g., a second portion) of the blade part (150) may be connected to the moving part (e.g., the drive shaft (61)).

[0114] The hole (3) of the blade portion (150) may be expressed as a “driving shaft hole”, a “coupling hole”, a “guide hole”, or a first hole (or a second hole). The hole (41) of the blade portion (150) may be expressed as a “rotating shaft hole”, a “coupling hole”, a “fixed shaft hole”, or a second hole (or a first hole).

[0115] Each of the plurality of blades (150A to 150D) can move. Alternatively, the plurality of blades (150A to 150D) can move or rotate within a preset range. The size (e.g., diameter) of the opening (301) can be varied by the movement or motion of the plurality of blades (150A to 150D). The opening (301) can also be expressed as a “hollow”, an “inlet”, or an “inlet hole”. By controlling the movement of the blades (150A to 150D), openings (301) having different sizes can be implemented.

[0116] For example, the maximum size of the opening (301) may be greater than or equal to 60 percent (%) and less than or equal to 90 percent (%) of the effective diameter of the "lens." Alternatively, for example, the maximum size of the opening (301) may be greater than or equal to 70 percent (%) and less than or equal to 80 percent (%) of the effective diameter of the "lens." In this case, the "lens" may be the first lens (31) positioned at the uppermost side. In another embodiment, the "lens" may be a lens (e.g., 32) positioned directly above the aperture module (40).

[0117] Also, for example, the minimum size of the opening (301) may be greater than or equal to 30 percent (%) and less than or equal to 60 percent (%) of the effective diameter of the “lens.” Or, for example, the minimum size of the opening (301) may be greater than or equal to 30 percent (%) and less than or equal to 40 percent (%) of the effective diameter of the “lens.”

[0118] The size of the opening (301) of the aperture module (40) is related to the position where the aperture module (40) is arranged between a plurality of lenses. That is, the maximum and minimum sizes of the opening (301) of the aperture module (40), the effective diameter of the lens, and the arrangement position of the aperture module (40) must be designed so that the brightness of light incident on the lens unit (30) (or the maximum brightness of light) is not reduced and has a desired value.

[0119] When the aperture module (40) is positioned between the second lens (32) and the third lens (33) from the top, under the relationship conditions between the maximum size (or minimum size) of the above-described aperture (301) and the effective diameter of the lens, a design can be made in which the brightness of light (or the maximum brightness of light) incident on the lens unit (30) is not reduced.

[0120] In addition, when the aperture module (40) is positioned between the lens (32) at the second position and the lens (33) at the third position, the size of the opening (301) of the aperture module (40) can be designed to be small without reducing the brightness of the light (or the maximum brightness of the light) incident on the lens unit (30). This allows the size of the aperture module (40) to be reduced and the size of the lens module (10) to be reduced.

[0121] However, in other embodiments, the aperture module (40) may be positioned between two neighboring lenses at different locations, although there may be differences in the reduction in brightness of the light.

[0122] Referring to FIG. 3, the lower surface of the second coupling portion (94) of the aperture module (40) may be positioned lower than the lowermost portion, the lowermost surface, or the lowermost end of the blade portion (150). Or, for example, the second coupling portion (94) may be positioned lower than the blade portion (150). For example, the second coupling portion (94) may not overlap the blade portion (150) in a direction perpendicular to the optical axis direction.

[0123] For example, among the plurality of lenses (31 to 36), the lens (36) positioned at the lowest side may be positioned closer to the second coupling portion (94) than the blade portion (150). For example, among the plurality of lenses (31 to 36), the lens (36) positioned at the lowest side may be positioned closer to the lower surface of the second coupling portion (94) than the lower surface of the blade portion (150).

[0124] The aperture unit (60) may include a driving unit that drives or moves the blade unit (150). The driving unit of the aperture unit (60) may include a coil (120) that is arranged or coupled to a fixed unit of the aperture module (40) and a magnetic member (130) that moves the blade unit (150) by interaction with the coil (120). For example, the magnetic member (130) may be a magnet.

[0125] For example, the magnetic member (130) can move by interaction with the coil (120) or rotate within a preset range around the optical axis.

[0126] The magnetic member (130) may be opposite or overlap the coil (120) in the direction of the optical axis. The magnetic member (130) may include at least one N pole and at least one S pole.

[0127] The magnetic member (130) may include a plurality of magnet units (130-1 to 130-4). The magnet units may be alternatively expressed as "magnet units." In FIG. 2B, the magnetic member (130) includes four magnet units, but in other embodiments, it may include one, two, three, or five or more magnet units. For example, the number of magnet units may be the same as the number of coil units of the coil (120). Also, for example, the number of magnet units may be the same as the number of blades. In other embodiments, the number of magnet units may be different from the number of blades.

[0128] For example, each magnet unit (130-1 to 130-4) may include one N pole and one S pole. In FIG. 2b, the N poles and the S poles of each magnet unit may be arranged to face each other or be separated from each other in a direction perpendicular to the optical axis. For example, the N poles and the S poles of the magnet units may be arranged to face each other or be separated from each other in a direction perpendicular to the circumference of the magnetic member (130) or the direction in which the inner peripheral surface (or inner side) and the outer peripheral surface (or outer side) of the magnetic member (130) face each other. Alternatively, in another embodiment, the N poles and the S poles of the magnet units may be arranged to face each other or be separated from each other in a direction in which the inner peripheral surface (or inner side) and the outer peripheral surface (or outer side) of the magnetic member (130) face each other.

[0129] In other embodiments, the N and S poles of each magnet unit may be arranged or separated to face each other in the direction of the optical axis.

[0130] For example, the magnetic member (130) may have a ring shape including a hollow (501) or an opening. When viewed from above or in the direction of the optical axis, the magnetic member (130) may have a ring shape. Or, for example, when viewed from above or in the direction of the optical axis, the magnetic member (130) may have an annular shape.

[0131] Since the magnetic member (130) has a ring shape, the magnetic member (130) can be easily rotated around the optical axis. For example, the ring can have a circular, oval, or polygonal (e.g., triangular, square, or pentagonal) shape.

[0132] The hollow (501) of the magnetic member (130) may overlap with the optical axis. At least a portion of the hollow (501) of the magnetic member (130) may face or overlap with a hollow (201, 301, 401, or 601) in the direction of the optical axis. For example, the hollows (201, 301, 401, 601) may face each other in the direction of the optical axis or at least partially overlap each other.

[0133] In another embodiment, when viewed from above or in the direction of the optical axis, the outer shape of the magnetic member (130) may be circular, oval, polygonal (e.g., square, or triangular)

[0134] For example, the magnetic member (130) may include a hollow or through hole. Also, for example, the magnet units (130-1 to 130-4) may contact each other. For example, the magnet units (130-1 to 130-4) may have a ring shape that contacts each other. For example, the portions where two adjacent magnet units contact each other may have opposite polarities.

[0135] In another embodiment, each of the magnet units (130-1 to 130-4) may be a four-pole magnet. A four-pole magnet may include two N poles and two S poles.

[0136] For example, the magnet units (130-1 to 130-4) may be arranged or positioned in the circumferential direction of the ring-shaped magnetic member (130). The magnet units (130-1 to 130-4) may have a single ring shape formed integrally.

[0137] For example, since the magnet units (130-1 to 130-4) have a single ring shape formed integrally, the driving force by the electromagnetic force with the coil (120) can be increased. In addition, since the magnet units (130-1 to 130-4) have a single ring shape formed integrally, the magnet units (130-1 to 130-4) can move together simultaneously. As a result, the blades (150A to 150D) can also move together simultaneously. Since the blades (150A to 150D) also move together simultaneously, uniform and stable movement is possible, and there is no movement deviation between the blades (150A to 150D) or the movement deviation can be reduced. Since there is no movement deviation between the blades (150A to 150D), the shape of the desired opening (301) can be easily obtained without error.

[0138] In an embodiment, the number of magnet units (130-1 to 130-4) may be the same as the number of drive shafts (61). However, in another embodiment, since the magnet units (130-1 to 130-4) have a single ring shape formed integrally, the number of magnet units (130-1 to 130-4) may be different from the number of drive shafts (61) or the number of blades. For example, the number of magnet units (130-1 to 130-4) may be smaller than the number of drive shafts (61). For example, the number of magnet units (130-1 to 130-4) may be smaller than the number of blades.

[0139] In another embodiment, the magnet units (130-1 to 130-4) may be spaced apart from each other. For example, the magnet units (130-1 to 130-4) may be spaced apart from each other in the circumferential direction of the ring-shaped magnetic member (130).

[0140] The aperture portion (60) may include a fixed shaft (51) that is connected or coupled to the blade portion (150). For example, the aperture portion (60) may include a housing (140) that includes the fixed shaft (51).

[0141] The fixed shaft (51) may be placed on one surface of the housing (140) facing the blade portion (150) (the lower surface (141) of the housing (140) based on FIG. 2A). The fixed shaft (51) may be expressed as a “rotational shaft”, “pillar portion”, “protrusion”, or “coupling shaft”. For example, the fixed shaft (51) may have a cylindrical shape or a rod shape.

[0142] For example, the fixed shaft (51) may protrude from one surface of the housing (140) (e.g., the lower surface (141) of the housing (140)). For example, the fixed shaft (51) may be a protrusion or projection protruding from one surface of the housing (140) (e.g., the lower surface (141) of the housing (140)).

[0143] The fixed shaft (51) can be combined with the hole (41) of the blade portion (150). For example, the fixed shaft (51) can be inserted or fitted into the hole (41) of the blade portion (150). To facilitate rotation, a lubricant or grease can be placed within the fixed shaft (51) and the hole (41) of the blade portion (150).

[0144] The fixed shaft (51) may include fixed shafts (51A to 51D) corresponding to the blades (150A to 150D). For example, the number of fixed shafts (51) may be equal to the number of blades. For example, each of the fixed shafts (51A to 51D) may be inserted or fitted into a corresponding one of the holes (41A to 41D) of the blades (150A to 150D).

[0145] The aperture portion (60) may be connected or coupled to a moving portion (e.g., a magnetic member (130)) and may include a driving shaft (61) that moves the blade portion (150). The driving shaft (61) may be expressed as a “moving shaft,” a “column portion,” a “protrusion,” or a “connecting shaft.” For example, the driving shaft (61) may have a cylindrical shape or a rod shape.

[0146] The aperture portion (60) may include drive shafts (61A to 61D) corresponding to the blades (150A to 150D). For example, the number of drive shafts (61) may be equal to the number of blades.

[0147] FIG. 4a may be an embodiment in which the driving shaft (61) is directly coupled with the magnetic member (130). In the embodiment illustrated in FIG. 4b, the aperture portion (60) may include a driving plate (80) that includes the driving shaft (61) and on which the magnetic member (140) is arranged, seated, or coupled. The driving plate (80) may be alternatively expressed as a “moving portion,” “driving ring,” “driving frame,” “frame,” “rotating portion,” “rotating ring,” “rotating plate,” or “rotating frame.”

[0148] For example, the drive plate (80) may include a body (81) and a drive shaft (61) protruding or extending from the body (81). The drive shaft (61) may protrude or extend from the body (81) in a direction toward the blade portion (150).

[0149] The driving plate (80) (or body (81)) may have a ring shape to facilitate rotation. The driving plate (80) may have a circular ring shape. For example, the body (81) may have a shape corresponding to or matching the magnetic member (130).

[0150] Referring to FIGS. 2A and 4B, the magnetic member (130) can be coupled to the driving plate (80). For example, the magnetic member (130) can be disposed on a second surface (e.g., an upper surface) of the driving plate (80) that is opposite to a first surface (e.g., a lower surface) of the driving plate (80) on which the driving shaft (61) is disposed.

[0151] The driving plate (80) may include a mounting portion for mounting, placing, or inserting the magnetic member (130). For example, the mounting portion may be formed on a second surface (e.g., an upper surface) of the driving plate (80). For example, the mounting portion of the driving plate (80) may be a groove, and the magnetic member (130) may be positioned within the mounting portion of the driving plate (80) or coupled to the mounting portion. In FIG. 4B, the driving shaft (61) and the magnetic member (130) may be spaced apart from each other.

[0152] Compared with the embodiment of FIG. 4A, the coupling force between the magnetic member (130) and the driving shaft (61) can be increased by the driving plate (80), and the blades (150A to 150D) can be stably rotated. In addition, the cloud member (236) can be arranged between the driving plate (80) and the housing (140), and since the cloud member (236) does not directly contact the magnetic member (130) but contacts the driving plate (80), the magnetic member (130) can be prevented from being damaged by friction with the cloud member (236).

[0153] However, compared to the embodiment of FIG. 4b, the driving plate (80) is omitted in the embodiment of FIG. 4a, so that the weight of the moving part can be reduced, thereby reducing the driving force required to rotate the blade part and reducing power consumption. In addition, since the driving force required to rotate the blade part is small, the size of the magnetic member and coil can be designed to be small, which can also reduce the size of the aperture module.

[0154] For example, one end of the drive shaft (61) can be coupled to a moving part (e.g., a magnetic member (130)). The drive shafts (61A to 61D) can be inserted into or fitted into a hole (3) (or a drive shaft hole) of the blades (150A to 150D). For example, the other end of each of the drive shafts (61A to 61D) can be inserted into or fitted into a corresponding one of the holes (3A to 3D) of the blades (150A to 150D).

[0155] In a state where the hole (41) of the blade portion (150) is fitted into the fixed shaft (51), the blade portion (150) can only rotate around the fixed shaft (51). In a state where the driving shaft (61) is fitted into the hole (3) of the blade portion (150), the hole (3) of the blade (150) can extend in one direction so that the driving shaft (61) can move. For example, the hole (3) can extend in a direction intersecting with the rotational direction of the blade portion (150) around the fixed shaft (51).

[0156] As the moving part (e.g., magnetic member (130)) moves or rotates, the drive shafts (61A to 61D) fitted into the holes (3A to 3D) of the blades (150A to 150D) can move. As the drive shafts (61A to 61D) move, the blades (150A to 150D) can be folded toward the optical axis or, conversely, the blades (150A to 150D) can be spread outward.

[0157] The blade portion (150) may be positioned below the housing (140). For example, the housing (140) may be positioned between the blade portion (150) and the magnetic member (130).

[0158] The housing (140) may be placed within the cavity (44) of the carrier (50). The housing (140) may be coupled to the carrier (50). For example, the housing (140) may be coupled to the carrier (50) by an adhesive. Or, for example, the housing (140) may be fixed to the carrier (50). The housing (140) may include a hollow portion (401).

[0159] For example, the housing (140) may include a hole (52) through which the drive shaft (61) passes. The hole (52) may be a through hole penetrating the housing (140) in the direction of the optical axis. In another embodiment, instead of the through hole (52), the housing (140) may include a escape portion to avoid spatial interference with the drive shaft (61). The escape portion may be a recessed groove in which a portion of the housing (140) is sunken, or a chamfered shape in which a portion of the housing (140) is chamfered.

[0160] The aperture portion (60) may include a circuit board (250) electrically connected to the coil (120). The circuit board (250) may include an opening (201). The opening (201) may be hollow or have a through-hole shape. The opening (201) may penetrate the circuit board (250) in the direction of the optical axis.

[0161] Referring to FIG. 2a, the circuit board (250) may be positioned under the housing (140). For example, referring to FIG. 2a, the circuit board (250) may be positioned under the blade portion (150).

[0162] The circuit board (250) can be coupled to the housing (140). The circuit board (250) can be fixed to the housing (140). For example, the circuit board (250) can be spaced apart from the blade portion (150).

[0163] The circuit board (250) may include a coupling portion (25) for coupling with the fixed axis (51) of the housing (140). The coupling portion (25) may be opposite or overlapping with the fixed axis (51) in the optical axis direction. The coupling portion (25) may be a hole or a through hole penetrating the circuit board (250) (or the body (251)). In another embodiment, the coupling portion (25) may be in the form of a groove. The coupling portion (25) may include a plurality of coupling portions (25A to 25D) corresponding to a plurality of fixed axes (51A to 51D).

[0164] In another embodiment, the coupling portion (25) is not coupled with the fixed shaft (51), and the housing (140) may include a coupling portion (or protrusion) for coupling with the coupling portion (25) of the circuit board (250) separately from the fixed shaft (51).

[0165] The circuit board (250) may include a shield (26) to avoid spatial interference with the drive shaft (61). The shield (26) is to prevent the circuit board (250) from interfering with the movement of the drive shaft (61). For example, the shield (26) may be a hole or a through hole. For example, the shield (26) may penetrate the circuit board (250) in the direction of the optical axis. In another embodiment, the shield (26) may be a groove shape in which a portion of the circuit board (250) is sunken. The shield (26) may have a shape and size such that the circuit board (250) and the drive shaft (61) can be sufficiently shielded within the movement range of the drive shaft (61).

[0166] The circuit board (250) may include a body (251) coupled to the housing (140) and having an opening (201) and a connection portion (255) extending from the body (251) and electrically connected to an external element or device. For example, the body (251) may be circular, but in other embodiments may be oval or polygonal (e.g., square).

[0167] Additionally, the circuit board (250) may include at least one protrusion (28) extending from a side surface of the circuit board (250) (e.g., a side surface of the body (251)). Referring to FIG. 2B, the circuit board (250) may include a plurality of protrusions (28) spaced apart from each other.

[0168] The housing (140) may include at least one groove (146) into which at least one protrusion (28) of the circuit board (250) is coupled, positioned, or inserted. The protrusion (28) of the circuit board (250) and the groove (146) of the housing (150) may serve as a coupling guide to easily couple the circuit board (250) and the housing (140). In addition, the protrusion (28) of the circuit board (250) and the groove (146) of the housing (150) may prevent the circuit board (250) from being warped or from being separated from the housing (140).

[0169] The coil (120) may be placed on a circuit board (250). Referring to FIG. 2A, the coil (120) may be placed on an upper surface of the circuit board (250). The coil (120) may be coupled to an upper surface of the circuit board (250). The coil (120) may be electrically connected to the circuit board (250) by solder or a conductive adhesive. The circuit board (250) may be a printed circuit board. The circuit board (250) may be a rigid substrate or a flexible substrate.

[0170] In another embodiment, the coil (120) may be placed on the lower surface of the circuit board (250). For example, in another embodiment, the coil (120) may be positioned on the opposite side of the blade portion (150) with respect to the circuit board (250).

[0171] The coil (120) may include a plurality of coil units (120A to 120D) corresponding to a plurality of magnet units (130-1 to 130-4). Each of the plurality of coil units (120A to 120D) may face or overlap a corresponding one of the magnet units (130-1 to 130-4) in the optical axis direction.

[0172] Each of the plurality of coil units (120A to 120D) may include a hollow portion (9A, see FIG. 2A). Each of the plurality of coil units (120A to 120D) may have a ring shape wound around an axis parallel to the optical axis. In another embodiment, at least one of the coil units (120A to 120D) may not include a hollow portion.

[0173] Referring to FIG. 5A, the coil units (120A to 120D) can overlap both the N pole and the S pole of the magnet units (130-1 to 130-4) when viewed in the optical axis direction or from above. The hollow (9A) of the coil units (120A to 120D) can overlap both the N pole and the S pole of the magnet units (130-1 to 130-4) when viewed in the optical axis direction or from above.

[0174] Each of the plurality of coil units (120A to 120D) can be superimposed on both the N pole and the S pole of a corresponding one of the magnet units (130-1 to 130-4) when viewed from above in the optical axis direction or in the optical axis direction.

[0175] The hollow portion (9A) of each of the plurality of coil units (120A to 120D) can overlap both the N pole and the S pole of the corresponding one of the magnet units (130-1 to 130-4) when viewed from above in the optical axis direction or in the optical axis direction.

[0176] The coil units (120A to 120D) may include a first portion corresponding to the inner circumferential surface (or inner side) of the magnetic member (130), a second portion corresponding to the outer circumferential surface (or outer side) of the magnetic member (130), a third portion connecting one side of the first portion and one side of the second portion, and a fourth portion connecting the other side of the first portion and the other side of the second portion. For example, the first portion of the coil units (120A to 120D) may include a curved shape or have a bent shape. The first portion of the coil units (120A to 120D) may have a fan-shaped arc shape. For example, the second portion of the coil units (120A to 120D) may include a curved shape or have a bent shape. The second portion of the coil units (120A to 120D) may have a fan-shaped arc shape. For example, the length of the first portion may be smaller than the length of the second portion.

[0177] The drive shaft (61) may be located outside the hollow space (9A) of the coil units (120A to 120D). For example, the drive shaft (61) may be located between the coil units (120A to 120D).

[0178] The drive shaft (61) may not overlap with the hollow (9A) of the coil unit (120A to 120D) in the optical axis direction. The drive shaft (61) may be positioned closer to the inner surface than the outer surface of the magnetic member (130). In another embodiment, the drive shaft (61) may be positioned closer to the outer surface than the inner surface of the magnetic member (130). In yet another embodiment, the drive shaft (61) may be positioned at a midpoint between the inner and outer surfaces of the magnetic member (130).

[0179] Referring to FIG. 5b, in another embodiment, the drive shaft (61) may be positioned within the hollow portion (9A) of the coil unit (120A to 120D). The drive shaft (61) may overlap with the hollow portion (9A) of the coil unit (120A to 120D) in the optical axis direction.

[0180] For example, coil units (120A to 120D) may be connected in series. The circuit board (250) may supply a driving signal to the coil (120). For example, a driving signal may be supplied to the coil units (120A to 120D) connected in series.

[0181] In another embodiment, the coil units (120A to 120D) may be connected in parallel, and a driving signal may be supplied to the parallel-connected coil units (120A to 120D).

[0182] In another embodiment, the coil units (120A to 120D) may be independent and not connected to each other, and the circuit board (250) may supply individual independent drive signals to each of the coil units (120A to 120D). For example, each of the coil units (120A to 120D) may be independently driven by individual drive signals.

[0183] When a driving signal is supplied to the coil (120), the moving part (e.g., the magnetic part (130)) can rotate around the optical axis by the electromagnetic force resulting from the interaction between the magnetic part (120) and the coil (120). As the moving part (magnetic part (130) rotates, the blades (150A to 150D) linked to the driving shaft (61) (or the blades (150A to 150D) into which the driving shaft (61) is inserted) can rotate within a preset range around the fixed shaft (51) of the housing (140). As the blades (150A to 150D) rotate, the size of the opening (301) can be changed stepwise or continuously.

[0184] The aperture portion (60) may include a position sensor (170) for detecting displacement of the blade portion (150). The position sensor (170) may detect a magnetic field of the magnetic member (130). Alternatively, the position sensor (170) may detect displacement or position of the magnetic member (130). Alternatively, the position sensor (170) may detect displacement or position of the drive shaft (61).

[0185] For example, the position sensor (170) may be arranged to face or overlap the magnetic member (130) in a direction perpendicular to the optical axis. In another embodiment, the position sensor (170) may be arranged to face or overlap the magnetic member (130) in the direction of the optical axis.

[0186] The position sensor (170) may be placed on the fixed portion of the aperture module (40). The position sensor (170) may be placed on the circuit board (250). For example, the position sensor (170) may be placed on the upper surface of the circuit board (250) or coupled with the upper surface of the circuit board (250). The position sensor (170) may be electrically connected to the circuit board (250). In another embodiment, the position sensor (170) may be placed on the lower surface of the circuit board (250) or coupled with the lower surface of the circuit board (250).

[0187] For example, in order to improve the linearity of the output signal of the position sensor (170), the position sensor (170) may be arranged to correspond to, oppose, or overlap with the boundary or boundary line of the N pole and S pole of any one of the magnet units (130-1 to 130-4). For example, at least a portion (e.g., the center) of the position sensor (170) may be arranged to correspond to, oppose, or overlap with the boundary or boundary line of the N pole and S pole of any one of the magnet units (130-1 to 130-4).

[0188] The position sensor (170) may include at least one sensor. The position sensor (170) may include at least one sensor corresponding to, opposite to, or overlapping with at least one (e.g., 130-1) of the plurality of magnet units (130-1 to 130-4). The position sensor (170) may include at least one sensor positioned within an opening of at least one (e.g., 120A) of the coil units (120A to 120D).

[0189] Referring to FIG. 3, the upper surface of the position sensor (170) may be positioned higher than the upper surface or top of the coil unit (120A). Alternatively, the position sensor (170) may protrude upward relative to the upper surface or top of the coil unit (120A). This allows the position sensor (170) to be positioned closer to the magnetic member (130), and the sensitivity and performance of the position sensor (170) may be improved.

[0190] The position sensor (170) may overlap with the coil (120) (or coil unit (e.g., 120A)) in a direction perpendicular to the optical axis. In other embodiments, the position sensor (170) may not overlap with the coil (120) (or coil unit (e.g., 120A)) in a direction perpendicular to the optical axis.

[0191] For example, the position sensor (170) may include two or more sensors. The position sensor (170) may include a sensor corresponding to each of two or more magnet units among the plurality of magnet units (130-1 to 130-4). In this case, the sensor may be located within the opening of the corresponding magnet unit and the corresponding coil unit.

[0192] In other embodiments, the position sensor (170) may be placed outside the opening of the coil unit.

[0193] For example, when viewed from the optical axis direction or from above, the position sensor (170) may overlap at least partly with the magnetic member (130) (or the corresponding magnet unit). Additionally, the position sensor (170) may not overlap with the magnetic member (130) (or the corresponding magnet unit) in a direction perpendicular to the optical axis direction.

[0194] In another embodiment, the position sensor (170) may not overlap the magnetic member (130) when viewed from the optical axis direction or from above. In another embodiment, the position sensor (170) may overlap the magnetic member (130) (or the corresponding magnet unit) in a direction perpendicular to the optical axis direction.

[0195] 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. The circuit board (250) may be conductively or electrically connected to the two input terminals and the two output terminals of the position sensor (170). The circuit board (250) may supply a driving signal to the two input terminals of the position sensor (170) and receive an output signal output from the two output terminals of the position sensor (170).

[0196] In another embodiment, the position sensor (170) may be a driver IC including a Hall sensor. In this case, the position sensor (170) may transmit and receive data with the outside world using data communication using a protocol, for example, I2C communication, and may supply a driving signal to the coil (120).

[0197] 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 a power or driving signal is input, a third terminal for a clock signal, a fourth terminal for a data signal, and fifth and sixth terminals for supplying a driving signal to the coil (120). The first to sixth terminals of the position sensor (170) may be conductively or electrically connected to the circuit board (250).

[0198] In other embodiments, the position sensor (170) may be an Anisotropic Magneto-Resistive (AMR) sensor, a Giant Magneto-Resistive (GMR) sensor, or a Tunnel Magneto-Resistive (TMR) sensor.

[0199] The carrier (50) can accommodate an aperture portion (60). For example, the aperture portion (60) can be placed within the carrier (50). The carrier (50) can be alternatively expressed as a “holder,” a “cover,” or a “cover member,” a “housing,” a “frame,” or a “base.” The carrier (50) can be formed by an injection molding method. For example, the carrier (50) can be formed of an injection molded material, for example, plastic or resin.

[0200] The carrier (50) may be positioned between two adjacent lenses among a plurality of lenses (e.g., 31 to 36). The carrier (50) may include an opening (601) corresponding to, opposite to, or overlapping the lens portion (30). The opening (601) may be a through hole penetrating the carrier (50) in the direction of the optical axis.

[0201] The carrier (50) may include a cavity (55) for accommodating the aperture portion (60). For example, the cavity may be in the shape of a groove. The cavity (55) may include a bottom surface (55A) having a step in the optical axis direction from the bottom surface (21A) of the carrier (50), and a side surface (55B) (or side wall) positioned between the bottom surface (55A) and the bottom surface (21A) of the carrier (50). For example, the bottom surface (55A) may be positioned higher than the bottom surface (21A) of the carrier (50). For example, the opening (601) may be formed in the bottom surface (55A) of the cavity (55).

[0202] The magnetic member (130) may correspond to, face, or overlap the bottom surface (55A) of the carrier (50) in the direction of the optical axis. The carrier (50) may include a coupling member (90) that couples with the lens unit (30) to be magnetically aligned with the lens unit (30).

[0203] For example, the carrier (50) may include a first coupling portion (92) for self-aligning or connecting with a lens (32) positioned on the upper side of the carrier (50). The first coupling portion (92) may be positioned on the upper side, the top, or the upper surface of the carrier (50). The first coupling portion (92) may protrude from the upper surface of the carrier (50) in the direction of the optical axis. For example, the first coupling portion (92) may be a “protrusion” positioned on the upper surface of the carrier (50).

[0204] The first coupling portion (92) may include a plurality of protrusions spaced apart from each other. For example, the first coupling portion (92) may include a plurality of protrusions arranged or arranged in the circumferential direction of the carrier (50). In another embodiment, the first coupling portion (92) may include a ring-shaped protrusion. In another embodiment, the first coupling portion (92) may be a single ring-shaped protrusion.

[0205] The carrier (50) may include a second coupling portion (94) for self-aligning or connecting with the lens (33) located on the lower side of the carrier (50). The second coupling portion (94) may be disposed on the lower side, the bottom side, or the lower side of the carrier (50). The second coupling portion (94) may protrude from the lower side of the carrier (50) in the direction of the optical axis. For example, the second coupling portion (94) may be a “protrusion” disposed on the lower side of the carrier (50).

[0206] The second coupling portion (94) may include a plurality of protrusions spaced apart from each other. For example, the second coupling portion (94) may include a plurality of protrusions arranged or arranged in the circumferential direction of the carrier (50). In another embodiment, the second coupling portion (94) may include a ring-shaped protrusion. In another embodiment, the second coupling portion (94) may be a single ring-shaped protrusion.

[0207] The aperture module (40) may include a cloud member (235) disposed between the moving member (e.g., magnetic member (130)) and the carrier (50) to facilitate rotation or movement of the moving member (e.g., magnetic member (130)).

[0208] For example, at least a portion of the cloud member (235) may be in contact with the carrier (50). Also, for example, at least another portion of the cloud member (235) may be in contact with a moving part (e.g., a magnetic member (130)).

[0209] The cloud member (235) can reduce friction between the moving member (e.g., the magnetic member (130)) and the fixed member (e.g., the housing (140)) by performing a cloud movement or sliding movement between the carrier (50) and the moving member (e.g., the magnetic member (130)) of the aperture module (40), thereby facilitating movement of the moving member (e.g., the magnetic member (130)) and reducing the driving current or power consumption required to move the moving member (the magnetic member (130)).

[0210] Additionally, the aperture module (40) may include a cloud member (236) disposed between the moving member (e.g., magnetic member (130)) and the housing (140).

[0211] For example, at least a portion of the cloud member (236) may be in contact with the housing (140). Also, for example, at least another portion of the cloud member (236) may be in contact with a moving member (e.g., a magnetic member (130)).

[0212] The cloud member (236) can reduce friction between the moving member (e.g., the magnetic member (130)) and the fixed member (e.g., the housing (140)) by performing a rolling or sliding movement between the housing (140) and the moving member (e.g., the magnetic member (130)), thereby facilitating movement of the moving member (e.g., the magnetic member (130)) and reducing the driving current or power consumption required to move the moving member (the magnetic member (130)).

[0213] The cloud members (235, 236) may be represented by balls, ball members, or ball bearings. For example, the cloud members (235, 236) may be made of, but are not limited to, metal, plastic, or resin. The cloud members (235, 236) may have a circular shape and may have a diameter sufficient to support the movement of the moving part (magnetic member (130)). For example, the cloud members (235, 236) may include a plurality of balls. In FIG. 2b, the number of balls in each of the cloud members (235, 236) is four, but in other embodiments, the number may be two, three, or five or more.

[0214] The carrier (50) may be formed with at least one “groove (36A, see FIG. 3)” or “guide groove” to facilitate placement or settling of the cloud member (235) and to guide movement. For example, the number of grooves (36A) may be the same as the number of cloud members. For example, the grooves (36A) may be arranged on the bottom surface (55A) of the carrier (50). At least a portion of the cloud member (235) may be arranged within the groove (36A) of the carrier (50).

[0215] The housing (140) may include at least one “groove (36B)” or “guide groove” to facilitate placement or settling of the cloud member (236) and to guide movement. The groove (36B, see FIG. 3) of the housing (140) may be formed on one surface of the housing (140) facing the moving part (magnetic member (130)).

[0216] According to another embodiment, the aperture module (40) may have only one of the cloud members (235, 236).

[0217] Referring to FIG. 6, the aperture module (40) may be positioned below the lens (32). The aperture module (40) may be disposed on the lens (33). Each of the lenses (31 to 36) of the lens unit (30) may include an optical unit and a flange unit. The optical unit may be a portion where the optical performance of the lens is demonstrated. For example, the optical unit may serve to transmit and refract light reflected by a subject. The optical unit may have a positive or negative refractive index and may have a spherical or aspherical shape. In addition, the optical unit may have a concave or convex shape or a meniscus shape in a paraxial region (e.g., a region adjacent to the optical axis). For example, the optical unit may include an incident surface through which light is incident and an exit surface through which the incident light is emitted.

[0218] The flange portion may be a portion that is fixed to or contacts another component, such as a lens barrel or another lens. For example, the flange portion may extend along the periphery of at least a portion of the optical portion. The flange portion may be formed integrally with the optical portion. Each of the lenses (31 to 36) may be formed of plastic or resin.

[0219] Each of the lenses (31 to 36) may include a protrusion (or alignment protrusion) disposed on the flange portion. For example, each lens may include at least one of a first protrusion disposed on an upper surface of the flange portion and a second protrusion disposed on a lower surface of the flange portion. For example, the first protrusion may be alternatively expressed as a first alignment protrusion or an upper protrusion, and the second protrusion may be alternatively expressed as a second alignment protrusion or a lower protrusion.

[0220] The lens (32) may include a protrusion (58A) corresponding to the first coupling portion (92) of the aperture module (40). In addition, the lens (33) may include a protrusion (57A) corresponding to the second coupling portion (94) of the aperture module (40).

[0221] The lens (32) positioned on the upper side of the aperture module (40) may include an optical portion (32A) and a flange portion (32B). The optical portion (31A) may include an incident surface (8A) and an exit surface (8B).

[0222] The lens (32) may include a protrusion (58A) for coupling with the aperture module (40). For example, the protrusion (58A) of the lens (32) may couple with the first coupling portion (92) of the aperture module (40).

[0223] Additionally, the lens (32) may include a protrusion (58B) for engaging with the lens (31) located on the upper side. Each of the protrusions (58A) and (58B) may be an alignment protrusion or a self-alignment protrusion.

[0224] The lens (32) may include a protrusion (58A) arranged on the lower side, lower side, or lower surface of the flange portion (32B). The lens (32) may include a protrusion (58B) arranged on the upper side, upper side, or upper surface of the flange portion (32B).

[0225] The lens (33) located on the lower side of the aperture module (40) may include an optical portion (33A) and a flange portion (33B). The optical portion (33A) may include an incident surface (7A) and an exit surface (7B).

[0226] The lens (33) may include a protrusion (57A) for coupling with the aperture module (40). For example, the protrusion (57A) may be coupled with the second coupling portion (94) of the aperture module (40).

[0227] Additionally, the lens (33) may include a protrusion (57B) for engaging with the lens (34) located on the lower side. Each of the protrusions (55A) and (57B) may be an alignment protrusion or a self-alignment protrusion.

[0228] The lens (33) may include a protrusion (57A) arranged on the upper side, upper portion, or upper surface of the flange portion (33B). The lens (33) may include a protrusion (57B) arranged on the lower side, lower portion, or lower surface of the flange portion (33B).

[0229] For example, the length (D1) of the aperture module (40) in the direction perpendicular to the optical axis may be smaller than the length (L1) of the incident surface (8A) of the lens (32) in the direction perpendicular to the optical axis. For example, the length (D1) of the aperture module (40) in the direction perpendicular to the optical axis may be smaller than or equal to the length (L2) of the exit surface (8B) of the lens (32) in the direction perpendicular to the optical axis.

[0230] For example, the length (D1) of the aperture module (40) in the direction perpendicular to the optical axis may be less than the length (L3) of the incident surface (7A) of the lens (33) in the direction perpendicular to the optical axis. In other embodiments, D1 may be equal to L3.

[0231] For example, the length (D1) of the aperture module (40) in the direction perpendicular to the optical axis may be smaller than the length (L4) of the exit surface (7B) of the lens (33) in the direction perpendicular to the optical axis. In other embodiments, D1 may be equal to L4.

[0232] The aperture module (40) may include a first coupling portion (92) corresponding to the protrusion (58A) of the lens (32). In addition, the aperture module (40) may include a second coupling portion (94) corresponding to the protrusion (57A) of the lens (33).

[0233] The first coupling portion (92) of the aperture module (40) may be in contact with the lower side, bottom side, or bottom surface of the flange portion (32B) of the lens (32). For example, the first coupling portion (92) of the aperture module (40) may be in contact with the protrusion (58A) of the flange portion (32B) of the lens (32). For example, the outer surface of the first coupling portion (92) may be in contact with the inner surface of the protrusion (58A) of the lens (32). Also, for example, the protrusion (58A) of the lens (32) may be in contact with the aperture module (40). For example, the protrusion (58A) of the lens (32) may be in contact with the carrier (40) of the aperture module (40). For example, the protrusion (58A) of the lens (32) may be in contact with the upper surface (21B) of the carrier (40) of the aperture module (40). In another embodiment, for example, the protrusion (58A) of the lens (32) may be spaced apart from the upper surface (21B) of the carrier (40) of the aperture module (40).

[0234] For example, the aperture module (40) (e.g., carrier (40)) may include a first engagement area (CR1) that engages with a protrusion (58A) of the lens (32). For example, the remaining portion of the aperture module (40) (e.g., carrier (30)) excluding the first engagement area (CR1) may be spaced apart from the lens (32). In another embodiment, the remaining portion of the aperture module (40) (e.g., carrier (30)) excluding the first engagement area (CR1) may be in contact with the lens (32).

[0235] For example, the aperture module (40) (e.g., carrier (40)) may include a second coupling area (CR2) that couples with a protrusion (57A) of the lens (33). For example, the remaining portion of the aperture module (40) (e.g., carrier (30)) excluding the second coupling area (CR2) may be spaced apart from the lens (33). In another embodiment, the remaining portion of the aperture module (40) (e.g., carrier (30)) excluding the second coupling area (CR2) may be in contact with the lens (33).

[0236] For example, the first coupling portion (92) of the aperture module (40) may face or overlap with the protrusion (58A) of the lens (32) in a direction perpendicular to the optical axis. For example, the first coupling portion (92) may be located inside the protrusion (58A) of the lens (32).

[0237] For example, the first coupling portion (92) may include a side surface (29A) (e.g., an outer surface) that faces or opposes one side surface (e.g., an inner surface of the protrusion (58A)) of the lens (32). For example, one side surface (e.g., an inner surface of the protrusion (58A)) of the lens (32) and the side surface (29A) (e.g., an outer surface) of the first coupling portion (92) may be coupled or in contact.

[0238] For example, the side surface (29A) may be an inclined surface. For example, the side surface (29A) may be an inclined surface inclined with respect to a horizontal plane perpendicular to the optical axis. In addition, for example, one side surface (e.g., an inner surface) of the protrusion (58A) of the lens (32) facing or opposite the side surface (29A) may be an inclined surface. As a result, the first coupling portion (92) and the protrusion (58A) of the lens (32) may be easily and firmly assembled or coupled. In addition, for example, at least one of the outer surface (side surface (29A)) and the inner surface of the first coupling portion (92) may include an inclined surface.

[0239] For example, the first coupling portion (92) may include a portion whose width decreases from the lower side of the aperture module (40) to the upper side (or from the lower surface of the carrier (40) to the upper surface of the carrier (30). For example, the width of the first coupling portion (92) may be the length of the first coupling portion (92) in a direction perpendicular to the optical axis direction. This allows the first coupling portion (92) and the protrusion (58A) of the lens (32) to be easily and firmly assembled or coupled.

[0240] For example, the second coupling portion (94) may include a side surface (29B) (e.g., an inner surface) that faces or opposes one side surface (e.g., an outer surface of the protrusion (57A)) of the lens (33). For example, one side surface (e.g., an outer surface of the protrusion (58A)) of the lens (33) of the protrusion (57A) and the side surface (29B) (e.g., an outer surface) of the second coupling portion (94) may be coupled or in contact.

[0241] For example, the side surface (29B) may be an inclined surface. For example, the side surface (29B) may be an inclined surface inclined with respect to a horizontal plane perpendicular to the optical axis. In addition, for example, one side (e.g., an inner side) of the protrusion (57A) of the lens (33) facing or opposite the side surface (29B) may be an inclined surface. As a result, the second coupling portion (94) and the protrusion (55A) of the lens (33) may be easily and firmly assembled or coupled. In addition, for example, at least one of the outer side and the inner side (29B) of the second coupling portion (94) may include an inclined surface.

[0242] For example, the second coupling portion (94) may include a portion whose width decreases from the upper side to the lower side of the aperture module (40) (or from the upper surface of the carrier (40) to the lower surface of the carrier (30)). For example, the width of the second coupling portion (94) may be the length of the second coupling portion (94) in a direction perpendicular to the optical axis direction. This allows the second coupling portion (94) and the protrusion (57A) of the lens (33) to be easily and firmly assembled or coupled.

[0243] For example, the optical axis (OA) may be positioned closer to the first engaging portion (92) of the aperture module (40) than to the protrusion (58A) of the lens (32). For example, the distance between the first engaging portion (92) of the aperture module (40) and the optical axis (OA) may be smaller than the distance between the protrusion (58A) of the lens (32) and the optical axis. Also, for example, the optical axis (OA) may be positioned closer to the protrusion (58B) of the lens (32) than to the first engaging portion (92) of the aperture module (40). For example, the distance between the first engaging portion (92) of the aperture module (40) and the optical axis (OA) may be larger than the distance between the protrusion (58B) of the lens (32) and the optical axis (OA).

[0244] The second coupling portion (94) of the aperture module (40) may be in contact with the upper side, top, or top surface of the flange portion (33B) of the lens (33). For example, the second coupling portion (94) of the aperture module (40) may be in contact with the protrusion (57A) of the flange portion (33B) of the lens (33). For example, the inner surface of the second coupling portion (94) of the aperture module (40) may be in contact with the outer surface of the protrusion (57A) of the flange portion (33B) of the lens (33).

[0245] Also, for example, the protrusion (57A) of the lens (33) may be in contact with the aperture module (40). For example, the protrusion (57A) of the lens (33) may be in contact with the carrier (40) of the aperture module (40). For example, the protrusion (57A) of the lens (33) may be in contact with the lower surface (21A) of the carrier (40) of the aperture module (40). In another embodiment, the protrusion (57A) of the lens (33) may be spaced apart from the lower surface (21A) of the carrier (40) of the aperture module (40).

[0246] For example, the second connecting portion (95) of the aperture module (40) may face or overlap with the protrusion (57A) of the lens (33) in a direction perpendicular to the optical axis. For example, the second connecting portion (94) may be positioned outside the protrusion (57A) of the lens (33).

[0247] For example, the optical axis (OA) may be positioned closer to the protrusion (57A) of the lens (33) than to the second coupling portion (94) of the aperture module (40). For example, the distance between the second coupling portion (94) of the aperture module (40) and the optical axis (OA) may be greater than the distance between the protrusion (57A) of the lens (33) and the optical axis.

[0248] For example, the optical axis (OA) may be positioned closer to the second coupling portion (94) of the aperture module (40) than the protrusion (57B) of the lens (33). For example, the distance between the second coupling portion (94) of the aperture module (40) and the optical axis (OA) may be smaller than the distance between the protrusion (57B) of the lens (33) and the optical axis. As described in FIG. 6, the arrangement relationship between the protrusions (58A, 58B, 57A, 57B) of the lenses (32, 33) and the coupling portions (92, 94) of the aperture module (40) may serve to stably, accurately, and easily self-align between the aperture module (40) and the lenses (31 to 36) of the lens unit (30).

[0249] Referring to FIG. 7, the lens driving device (100) may include an AF moving unit and a fixed unit. The AF moving unit may move in the optical axis direction with respect to the fixed unit. For example, the AF moving unit may include a bobbin (1110). The AF moving unit may further include a component (e.g., a magnetic member (1130)) coupled to the bobbin (1110). For example, the magnetic member (1130) may be a magnet. In another embodiment, the AF moving unit may further include a lens module (10) coupled to the bobbin (110).

[0250] The fixed portion of the lens driving device (100) may be a fixed element. That is, the fixed portion may not move in the direction of the optical axis. Alternatively, the fixed portion may not move or tilt in a direction perpendicular to the optical axis. Furthermore, the fixed portion may not rotate around the optical axis. Furthermore, a component coupled to the fixed portion may be included in the fixed portion. The moving portion may be an element that is movable relative to the fixed portion.

[0251] The bobbin (1110) can move in the direction of the optical axis. The lens driving device (100) may include a coil (1120) and a magnetic member (1130) that move the bobbin (1100) in the direction of the optical axis by electromagnetic interaction. The coil (1120) and the magnetic member (1130) may be an AF driving unit that moves or drives the AF moving unit. The bobbin (1110) may include an opening for coupling with the lens barrel (10).

[0252] The lens driving device (100) may include a housing (1140) for accommodating a bobbin (1110). The bobbin (1110) may be disposed inside the housing (1140). The coil (1120) may be disposed in the bobbin (1110), and the magnetic member (1130) may be disposed in the housing (1140). In another embodiment, the coil (1120) may be disposed in the housing (1140), and the magnetic member (1130) may be disposed in the bobbin (1110). For example, at an initial position of the bobbin (1110), the magnetic member (1130) may overlap at least a portion of the coil (1120) in a direction perpendicular to the optical axis (OA). For example, the initial position of the bobbin (1110) may be the initial position of the AF movable part (e.g., bobbin) when no power or driving signal and sensing signal are applied to the coil (1120). In addition, the initial position of the bobbin (1110) may be the position at which the AF movable part is located when gravity acts from the bobbin (1110) toward the base (1210), or conversely, when gravity acts from the base (1210) toward the bobbin (1110). The AF movable part may include the bobbin (1110) and components mounted on the bobbin (1110), for example, the coil (1120).

[0253] The lens driving device (100) may include an elastic member coupled with a bobbin (1110) and a housing (1140). The elastic member may include at least one of an upper elastic member (1150) and a lower elastic member (1160). The elastic member may support the bobbin (1110). For example, the upper elastic member (1150) may be coupled with an upper portion, an upper surface, or an upper end of the bobbin (1110) and an upper portion, an upper surface, or an upper end of the housing (1140), and the lower elastic member (1160) may be coupled with a lower portion, a lower portion, or a lower end of the bobbin (1110) and a lower portion, a lower portion, or a lower end of the housing (1140).

[0254] The lens driving device (100) may include a base (1120) disposed below the bobbin (1110) and / or the housing (1140). For example, the base (1210) may be disposed below the lower elastic member (1160). The base (1210) may have an opening corresponding to the opening of the bobbin (1110) and / or the opening of the housing (1140).

[0255] The lens driving device (100) may include a housing (1140), a bobbin (1110), and a cover member (300) for accommodating the lens barrel (10). The cover member (300) may be coupled to a base (1210). The cover member (300) may include an upper plate and a side plate, and the side plate may be coupled to the base (1210). The cover member (300) and the base (1210) may be included in a fixed part of the lens driving device (100).

[0256] Also, although not shown in FIG. 7, the lens driving device (100) may include a position sensor (hereinafter referred to as an AF position sensor) for detecting displacement or position of the bobbin (1110) in the optical axis direction. The AF position sensor may be disposed in the housing, and the lens driving device (100) may further include a sensing magnet corresponding to or facing the AF position sensor. The AF position sensor may detect a magnetic field of the sensing magnet. In another embodiment, the sensing magnet may be disposed in the housing, and the AF position sensor may be disposed in the bobbin.

[0257] The cover member (300), housing (1140), bobbin (1110), coil (1120), magnetic member (1130), upper elastic member (1150), lower elastic member (1160), and base (1210) of FIG. 7 may be included in the auto focusing unit (101).

[0258] The sensor unit (500) may include an image sensor (810) positioned below the lens driving device (100). In the optical axis direction, the image sensor (810) may correspond to, face, or overlap with the lens module (10).

[0259] The image sensor (810) can perform a function of converting light passing through the lens module (10) into image data. More specifically, the image sensor (810) can convert light into an analog signal through a pixel array including a plurality of pixels, and generate image data by synthesizing a digital signal corresponding to the analog signal.

[0260] The sensor unit (500) may further include a filter (610) disposed between the lens module (10) and the image sensor (810). The filter (610) may block light of a specific frequency band from passing through the lens module (10) from entering the image sensor (810). For example, the filter (610) may be an infrared cutoff filter, but is not limited thereto. In this case, the filter (610) may be disposed to be parallel to a plane perpendicular to the optical axis, for example, an xy plane.

[0261] The sensor unit (500) may further include a circuit board (800) electrically connected to the image sensor (810). The circuit board (800) may be positioned below the image sensor (810). The circuit board (800) may be positioned below the lens driving device (100). The circuit board (800) may be a printed circuit board.

[0262] The sensor unit (500) may further include a sensor base (1310) for mounting or arranging a filter (610). The sensor base (1310) may be arranged on a circuit board (800). The sensor base (1310) may be arranged between the lens driving device (100) and the circuit board (800). The filter (610) may be arranged on the sensor base (1310).

[0263] In another embodiment, the sensor base (1310) may be omitted, and the filter (610) may be placed on the base (1210) of the lens driving device (100). For example, the filter (610) may be placed on or attached to the lower surface of the base (210).

[0264] Although not shown in FIG. 7, the lens driving device (100) may include an OIS unit (102). For example, the OIS unit (102) may be located above the image sensor (810). For example, the OIS unit (102) may move the bobbin (1110) in a direction perpendicular to the optical axis. In addition, the OIS unit (102) may move an OIS moving unit (e.g., a housing (1140)) in a direction perpendicular to the optical axis. The OIS moving unit may include a housing (1140) and a configuration coupled to the housing (1140). For example, the OIS moving unit may include an AF moving unit.

[0265] The OIS unit (102) may include a coil (hereinafter referred to as “OIS coil”) that moves the housing (1140) in a direction perpendicular to the optical axis by interacting with a magnetic member (1130). The OIS coil may correspond to, face, or overlap the magnetic member (1130) in the direction of the optical axis.

[0266] The OIS unit (102) may include a circuit board electrically connected to the OIS coil. For example, the circuit board may be placed on the base (1210). For example, the OIS coil may be placed on the circuit board. Alternatively, the OIS coil may be formed integrally with the circuit board.

[0267] In addition, the OIS unit (102) may include a support member that is coupled to the upper elastic member (1150) and electrically connected to the circuit board of the OIS unit. For example, the support member may be in the form of a wire. In addition, the OIS unit (102) may include a position sensor (hereinafter, OIS position sensor) for detecting displacement or position of the housing (1140) in a direction perpendicular to the optical axis. For example, the OIS position sensor may detect a magnetic field of the magnetic member (1130). For example, the OIS position sensor may be disposed on the base and electrically connected to the circuit board of the OIS unit (102).

[0268] In another embodiment, the OIS unit (102) may move the sensor unit (500) in a direction perpendicular to the optical axis, rather than moving the housing (1140). For example, in another embodiment, the OIS unit (102) may move the image sensor (810) and the circuit board (800) in a direction perpendicular to the optical axis.

[0269] FIGS. 8A to 8E illustrate a method for manufacturing a lens module (10) of a camera device (200) according to an embodiment.

[0270] Referring to Fig. 8a, lenses (31, 32) are sequentially assembled into the lens barrel (20). The lenses (31, 32) can be self-aligned and arranged by the alignment protrusion (43A) of the lens (31) and the alignment protrusion (43B) of the lens (32).

[0271] Referring to Fig. 8b, an aperture module (40) is assembled on a lens (32). At this time, the protrusion (58A) of the lens (32) and the first coupling portion (92) of the aperture module (40) can be in contact with each other, and the lens (32) and the aperture module (40) can be self-aligned by being guided by the protrusion (58A) and the first coupling portion (92).

[0272] Referring to Fig. 8c, a lens (33) is assembled on an aperture module (40). At this time, the second connecting portion (94) of the aperture module (40) and the protrusion (57A) of the lens (33) can be in contact with each other, and the aperture module (40) and the lens (33) can be self-aligned by being guided by the protrusion (57A) and the second connecting portion (94).

[0273] In FIGS. 8b and 8c, the second lens (32) and the aperture module (40) are self-aligned, and the lens (33) and the aperture module (40) are self-aligned, so that the lens (32) and the lens (33) can be self-aligned by the aperture module (40).

[0274] Additionally, at least a portion of the connection portion (255) of the circuit board (250) of the aperture module (40) may be positioned outside the lens barrel (20) through an opening (20A) formed in the lens barrel (20). For example, the opening (20A) may be a through hole penetrating the lens barrel (20).

[0275] The remaining lenses (34 to 36) of the lens unit (30) are sequentially assembled on the lens (33). The lenses (34 to 35) can also be assembled by being self-aligned by means of alignment protrusions.

[0276] Referring to FIG. 8d, the connection portion (255) of the circuit board (250) is fixed to the first jig (JIG1). The connection portion of the active align device is electrically connected to the connection portion (255) of the circuit board (250) using the second jig (JIG2).

[0277] Then, the aperture module (40) is controlled by the active alignment device so that the opening (301) of the blade portion (150) of the aperture module (40) has the maximum diameter. That is, the opening (301) of the blade portion (150) is fully opened. Next, the lens module (10) is coupled with the bobbin (1110) of the lens driving device (100) and an automatic alignment process is performed at the same time.

[0278] Referring to FIG. 8e, the aperture module (40) and the sensor unit (500) are electrically connected by the conductive member (236).

[0279] Unlike the comparative example in which the aperture is located outside the lens barrel, the embodiment has the aperture module (40) located inside the lens barrel (20) and between the lenses. Compared to the comparative example, the embodiment has the following advantages.

[0280] Since the aperture module (40) is positioned between the lenses, the TTL ("Total Top Length" or "Total Track Length") of the lens module (10) can be reduced. The TTL can be the distance between the highest point of the incident surface of the first lens (e.g., 31) and the image sensor (810).

[0281] Since the aperture module (40) is located inside the lens barrel (20) and between the lenses, the required diameter of the opening (301) of the blade portion (150) of the aperture module (40) can be designed to be small. By designing the required diameter of the opening (301) of the blade portion (150) to be small, the size of the blade portion (150) (or aperture) can be reduced, thereby increasing the speed of the aperture, the moving speed of the blade portion (150), or the variable speed of the size of the aperture (301). This increase in the speed of the aperture can improve camera performance.

[0282] In general, as the thickness of the blade of the aperture module increases, the blade may sag, making it difficult to drive (or move) the blade and causing spatial interference with other configurations.

[0283] In the embodiment, since the size of the blade (150) can be designed to be small, the thickness of the blade (150) can be reduced, and thus, sagging of the blade (150) can be prevented.

[0284] In addition, in the embodiment, self-alignment between lenses (31 to 36) can be performed using the aperture module (40), so that a separate member (e.g., spacer) for lens alignment is not required. As a result, in the embodiment, the structure of the lens module (10) can be designed simply, the weight of the lens module (10) can be reduced, the driving current for AF driving can be reduced, and the power consumption can be reduced.

[0285] In addition, since the aperture module (40) and lenses (31 to 36) are sequentially assembled and self-alignment is performed simultaneously as shown in FIGS. 8a to 8e, an automatic assembly process for the lenses can be applied, and an active alignment process is possible.

[0286] Fig. 9a is an exploded perspective view of an aperture module (40) according to another embodiment of a camera device (200), and Fig. 9b is an exploded perspective view of the aperture module (40) of Fig. 9a in another direction. In Figs. 9a and 9b, the same reference numerals as in Figs. 2a and 2b denote the same configurations, and descriptions of the same configurations are omitted or simplified.

[0287] The carrier (50-1) of the aperture module (40) illustrated in FIGS. 9A and 9B may include a first carrier (75A) and a second carrier (75B). The second carrier (75B) may be positioned below the first carrier (75A). For example, the first carrier (75A) and the second carrier (75B) may be coupled to each other.

[0288] The first carrier (75A) may be positioned on the upper side of the magnetic member (130), and the second carrier (75B) may be positioned below the circuit board (250). At least one of the first carrier (75) and the second carrier (75B) may accommodate the aperture portion (60).

[0289] The first carrier (75A) may include a first opening (601A). The description of the opening (601) of the carrier (50) may apply or be analogized to the first opening (601A).

[0290] The first carrier (75A) may include a first body (50A). The first carrier (75A) may include a first cavity (55-1) for accommodating at least a portion of the aperture portion (60). The cavity (55-1) may be formed in the first body (50A). For example, the first cavity (55-1) may be in a groove shape. The first cavity (55-1) may include a first bottom surface (55A1) having a step in the optical axis direction from the lower surface of the first carrier (75A), and a first side surface (55B1) (or side wall) positioned between the first bottom surface (55A1) and the lower surface of the first carrier (75A). For example, the first bottom surface (55A1) may be positioned higher than the lower surface of the first carrier (75A). For example, the first opening (601A) may be formed on the first bottom surface (55A1) of the first cavity (55-1).

[0291] The first carrier (75A) may include a first coupling portion (92). The first coupling portion (92) may be disposed on the first body (50A). For example, the first coupling portion (92) may be disposed on the upper part, the upper part, or the upper surface of the first body (50A). The description of the first coupling portion (92) of the carrier (50) may be applied or analogized to the first coupling portion (92) of the first carrier (75A).

[0292] The second carrier (75B) may include a second opening (601B). The description of the opening (601) of the carrier (50) may be applied or analogized to the second opening (601B).

[0293] The second carrier (75B) may include a second body (50B). The second body (50B) may be coupled with the first body (50A). For example, the lower, lower, or bottom surface of the first body (50A) may be coupled with the upper, upper, or top surface of the second body (50B).

[0294] The second carrier (75B) may include a second cavity (55-2) for accommodating at least another portion of the aperture portion (60). The second cavity (55-2) may be formed in the second body (50B). For example, the second cavity (55-2) (55-2) may be in a groove shape. The second cavity (55-2) may include a second bottom surface (55A2) having a step in the optical axis direction from the upper surface of the second carrier (75B), and a second side surface (55B2) (or side wall) positioned between the second bottom surface (55A2) and the upper surface of the second carrier (75B). For example, the second bottom surface (55A2) may be positioned lower than the upper surface of the second carrier (75B). For example, the second opening (601B) may be formed on the second bottom surface (55A2) of the second cavity (55-2).

[0295] The second carrier (75B) may include a second coupling portion (94). The second coupling portion (94) may be disposed on the second body (50B). For example, the second coupling portion (94) may be disposed on the lower, lower, or bottom surface of the second body (50B). The description of the second coupling portion (94) of the carrier (50) may be applied or analogized to the second coupling portion (94) of the second carrier (75B).

[0296] FIG. 10a is a perspective view of an aperture module (40) according to another embodiment, and FIG. 10b is a perspective view of the aperture module (40) of FIG. 10a in another direction.

[0297] The arrangement position of the carrier (50-2) of the aperture module (40) illustrated in FIGS. 10A and 10B is different from the arrangement position of the carrier (50) in the embodiment of FIG. 2A. The carrier (50-2) may be positioned below the circuit board (250). For example, the cavity (55-3) of the carrier (50-2) may include a bottom surface (55A3) positioned lower than the upper surface of the carrier (50-2) and a side surface (55B3) (or side wall) positioned between the bottom surface (55B) of the carrier (50-1) and the upper surface of the carrier (50-2). The circuit board (250) and / or the housing (140) may be positioned on the bottom surface (55B) of the carrier (50-1). In the embodiment of FIGS. 10A and 10B, the cloud member (235) of FIG. 2A may be omitted.

[0298] In FIG. 2a, the carrier (50) can be coupled with the aperture portion (60) from the upper side of the magnetic member (130) toward the lower side of the magnetic member (130). In the embodiment illustrated in FIG. 10a, the carrier (50-2) can be coupled with the aperture portion (60) from the lower side of the circuit board (250) toward the upper side of the circuit board (250).

[0299] Fig. 11 shows the arrangement of the aperture portion (60) according to another embodiment.

[0300] Referring to FIG. 11, the arrangement order of the aperture portion (60) may be, from top to bottom, a circuit board (250), a coil (120), a blade portion (150), a housing (140), a cloud member (236), a magnetic member (130), and a cloud member (235).

[0301] The aperture portion (60) illustrated in FIG. 11 can be applied or analogously applied to the embodiments of FIGS. 9A and 10A. In addition, the aperture portion (60) illustrated in FIG. 11 can be applied or analogically applied to the embodiment of FIG. 2A, in which case the cloud member (235) can be omitted.

[0302] FIG. 12a is a plan view of a magnetic member (130), a coil (120), and a position sensor (170) according to an embodiment.

[0303] Referring to FIG. 12a, when viewed in the direction of the optical axis or from above or below, the position sensor (170) may overlap with one of the magnet units (e.g., 130-1) of the magnetic member (130). For example, the position sensor (170) may overlap with the boundary line of the N pole and the S pole of the magnet unit (e.g., 130-1).

[0304] When viewed in the direction of the optical axis or from above or below, the position sensor (170) can be placed within the hollow (9A) of the coil unit (e.g., 120A) corresponding to one of the magnet units (e.g., 130-1). For example, the position sensor (170) can overlap the hollow (9A) of the coil unit (e.g., 120A) in the direction of the optical axis. Additionally, the position sensor (170) can overlap the coil unit (e.g., 120A) in a direction perpendicular to the direction of the optical axis.

[0305] The position sensor (170) may be positioned closer to the inner circumference (or inner surface) of the magnetic member (130) than to the outer circumference (or outer surface) of the magnetic member (130). In another embodiment, the position sensor (170) may be positioned closer to the outer circumference (or outer surface) of the magnetic member (130) than to the inner circumference (or inner surface) of the magnetic member (130). In yet another embodiment, the position sensor (170) may be positioned to be spaced apart from the inner circumference (or inner surface) and the outer circumference (or outer surface) of the magnetic member (130) by the same distance.

[0306] To avoid spatial interference with the position sensor (170), the drive shaft (61) may be located outside the hollow (9A) of the coil unit (120A to 120D).

[0307] Figure 12b shows the arrangement of a position sensor (170) according to another embodiment.

[0308] Referring to FIG. 12B, the position sensor (170) may be positioned outside the hollow (9A) of the coil (120). For example, the position sensor (170) may be positioned outside the hollow (9A) of the coil unit (e.g., 120A). For example, the position sensor (170) may be positioned between two neighboring coil units (e.g., 120A and 120B).

[0309] The position sensor (170) may be positioned to overlap with the boundary lines of two neighboring magnet units (e.g., 130-1 and 130-2). For example, the position sensor (170) may be positioned to overlap with the boundary lines of the N and S poles of two neighboring magnet units (e.g., 130-1 and 130-2).

[0310] In FIG. 12b, the position sensor (170) is positioned so as to overlap the boundary lines of two neighboring magnet units (e.g., 130-1 and 130-2), so that it can be positioned far from the coil (120) (or coil units (120A to 120D)), thereby preventing the reliability and performance of the position sensor (170) from being deteriorated due to the influence of the magnetic field of the coil (120).

[0311] For example, the position sensor (170) may be positioned closer to the drive shaft (e.g., 61A) located between the two neighboring coil units (e.g., 120A, 120B) than to the two neighboring coil units (e.g., 120A, 120B). This is because when a drive signal is supplied to the coil units (120A to 120D), a magnetic field is formed in the coil units (120A to 120D), and the magnetic field of the coil units (120A to 120D) may affect the output of the position sensor (170), which may deteriorate the performance of the position sensor (170) and lower the accuracy of position sensing of the position sensor. In an embodiment, the position sensor (170) may be positioned so as to be far away from the two neighboring coil units (120A, 120). Due to this, the position sensor (170) can be less affected by the magnetic field of the coil units (120A to 120D), and the accuracy of sensing of the position sensor (170) can be prevented from deteriorating.

[0312] For example, when viewed from the top or bottom, the position sensor (170) may be positioned between the drive shaft (61A) and the outer peripheral surface (or outer surface) of the magnetic member (130). In another embodiment, for example, when viewed from the top or bottom, the position sensor (170) may be positioned between the drive shaft (61A) and the inner peripheral surface (or inner surface) of the magnetic member (130).

[0313] Figure 12c shows the arrangement of a position sensor (170) according to another embodiment.

[0314] Referring to FIG. 12c, the position sensor (170) may not overlap with the coil (120) in the optical axis direction. The position sensor (170) may include a first portion (P1) that overlaps with the magnetic member (130) in the optical axis direction and a second portion (P2) that does not overlap with the magnetic member (130) in the optical axis direction. For example, the first portion (P1) may be located inside the outer surface (outer surface) of the magnetic member (130) when viewed from above or below.

[0315] For example, the second portion (P2) may be positioned on the outside of the outer circumferential surface (or outer surface) of the magnetic member (130) when viewed from above or below. When viewed from above or below, the position sensor (170) may be arranged to overlap the outer circumferential surface (or outer surface) of the magnetic member (130) in the optical axis direction. Accordingly, the position sensor (170) may be arranged to be less affected by the magnetic field of the coil (120), and the reliability or performance of the position sensor (170) may be prevented from being deteriorated due to the influence of the magnetic field of the coil (120).

[0316] FIG. 12d shows the arrangement of position sensors (170-1, 170-2) according to another embodiment.

[0317] Referring to FIG. 12d, the aperture module (40) may include one magnet unit (e.g., 130-1) of the magnet (130) and two or more position sensors (e.g., 170-1, 170-2) corresponding to each other.

[0318] For example, the aperture module (40) may include at least one first position sensor (e.g., 170-1) corresponding to or overlapping with the N pole of one magnet unit (e.g., 130-1). The aperture module (40) may also include at least one second position sensor (e.g., 170-2) corresponding to or overlapping with the S pole of one magnet unit (e.g., 130-1).

[0319] Fig. 12e illustrates an arrangement of position sensors (171-1, 171-2) according to another embodiment. Referring to Fig. 12e, the aperture module (40) may include at least one first position sensor (171-1) corresponding to or overlapping with the N pole (or S pole) of one (e.g., 130-1) of two magnet units (e.g., 130-1, 130-2).

[0320] Additionally, the aperture module (40) may include at least one second position sensor (e.g., 171-2) corresponding to or overlapping the south pole (or north pole) of the other one (e.g., 130-2) of the two magnet units (e.g., 130-1, 130-2). In this case, the two magnet units may be adjacent to each other. In another embodiment, the two magnet units may be positioned spaced apart from each other.

[0321] FIG. 12F illustrates an arrangement of position sensors (172-1, 172-2) according to another embodiment. Referring to FIG. 12F, the aperture module (40) may include two or more position sensors (172-1, 172-2) corresponding to one magnet unit (e.g., 130-1) of the magnet (130). The aperture module (40) may include at least one first position sensor (172-1) corresponding to or overlapping the N pole of one magnet unit (e.g., 130-1). In addition, the aperture module (40) may include at least one second position sensor (172-2) corresponding to or overlapping the S pole of one magnet unit (e.g., 130-1). The description of the position sensor (170) of FIG. 12c can be applied or analogized to each of the position sensors (172-1, 172-2) of FIG. 12f.

[0322] Fig. 13a shows the arrangement of a position sensor (170) according to another embodiment.

[0323] Referring to FIG. 13A, the position sensor (170) may include a plurality of sensors (170A to 170D). In FIG. 13A, the position sensor (170) may include a sensor corresponding to each of the magnet units (130-1 to 130-4). Alternatively, the position sensor (170) may include a sensor corresponding to each of the coil units (120A to 120D). In FIG. 13A, the number of sensors of the position sensor (170) may be equal to the number of magnet units.

[0324] When the diameter of the lens portion (30) (or lens) increases, the size of the variable opening (301) of the blade portion (150) may increase, and for this purpose, the moving distance of the blades (150A to 150D) must increase. In addition, in order to increase the moving distance of the blades (150A to 150D), the moving range (or rotational amount) of the magnetic member (130) must increase.

[0325] In order to easily and accurately sense the displacement of the blade (150A to 150D) with an increased range of movement or distance of movement of the magnetic member (130) increased in this way, the output or output voltage of the position sensor (170) must be large.

[0326] In an embodiment, the outputs of two or more sensors can be added by the control unit, and the added output value can be used to easily and accurately sense the displacement of the blades (150A to 150D). As a result, the aperture module (40) can accurately change the opening (301) of the aperture unit (60) to a desired size. The control unit may be a control unit included in the camera device (200) or a control unit (780) of the optical device (200A).

[0327] In another embodiment, the output terminals of each of two or more sensors may be electrically connected in series with each other. For example, two output terminals of each of two or more sensors may be connected in series with each other. In addition, signals output from both ends of the serially connected output terminals of the two or more sensors may become the output of the position sensor (170). In this case, the output value (or range of output values) of the position sensor (170) may be greater than the output value (or range of output values) of one sensor. In this way, since the output value (or range of output values) of the position sensor (170) increases, the code value (or range of code values) of the position sensor (170) corresponding to the output value (or range of output values) may increase. As a result, the sensitivity of the position sensor (170) can be improved, the displacement of the blades (150A to 150D) can be accurately controlled, and the opening (301) of the aperture (60) can be accurately varied to a desired size. At this time, the code value of the position sensor (170) may be a value preset to correspond to the displacement (or position) of the magnetic member (130) (or blade portion (150)) through calibration. In an embodiment, the opening (301) of the aperture portion (60) for a large-diameter lens can be accurately varied to a desired size.

[0328] For example, two output terminals of each of two or more sensors may be connected in series with each other by wires or circuit patterns formed on the circuit board (250). And the circuit board (250) may output or supply a signal (hereinafter, “final output signal”) output from both ends of the serially connected output terminals of the two or more sensors. For example, the circuit board (250) may include two wires (or terminals) for transmitting or outputting the final output signal.

[0329] The description of the magnetic member (130), position sensor (170), and coil (120) of FIG. 12A can be applied or analogized to each of the plurality of sensors (170A to 1170D) of FIG. 13A.

[0330] In another embodiment, the number of sensors of the position sensor (170) may be smaller than the number of magnet units (130-1 to 130-4). For example, the position sensor (170) may include two magnet units (e.g., 130-1 and 130-3) (or 130-2 and 130-4) positioned opposite to each other with respect to the optical axis among a plurality of magnet units and two corresponding sensors (e.g., 170A and 170C) (or 170B and 170D), and the remaining sensors (e.g., 170B, 170D) (or 170A, 170C) may be omitted.

[0331] In another embodiment, the position sensor (170) may include two or more sensors (e.g., 170A, 170B) corresponding to two or more neighboring magnet units (e.g., 130-1, 130-2) among a plurality of magnet units.

[0332] Fig. 13b illustrates the arrangement of a position sensor (170) according to another embodiment. Fig. 13b may be a modified example of Fig. 13a.

[0333] In Fig. 13b, each sensor (170A to 170D) can be positioned outside the opening (9A) of each coil unit (120A to 120B). The description of the magnetic member (130), the position sensor (170), and the coil (120) of Fig. 12b can be applied or analogized to each of the plurality of sensors (170A to 170D) of Fig. 13b.

[0334] Fig. 13c illustrates the arrangement of a position sensor (170) according to another embodiment. Fig. 13c may be another modified example of Fig. 13a.

[0335] In Fig. 13c, each sensor (170A1 to 170D1) may be positioned outside the opening (9A) of each coil unit (120A to 120B). Each sensor (170A1 to 170D1) may include a first portion (P1) that overlaps with the corresponding magnet unit (130-1 to 130-4) in the optical axis direction, and a second portion (P2) that does not overlap with the magnetic member (130) in the optical axis direction.

[0336] The description of the magnetic member (130), position sensor (170), and coil (120) of FIG. 12c can be applied or analogized to each of the plurality of sensors (170A to 170D) of FIG. 13c.

[0337] The description of FIGS. 12d to 12f can be applied or analogized to FIGS. 13a to 13c.

[0338] Figure 14a shows the polarity according to one embodiment of the magnet unit (130-1).

[0339] Referring to Fig. 14a, the N pole and S pole of the magnet unit (130-1) may be arranged to face or be separated in a direction perpendicular to the circumferential direction of the magnetic member (130) or the direction in which the inner surface (or inner side) and the outer surface (or outer side) of the magnetic member (130) face each other.

[0340] They may be arranged to face each other or be separated from each other in a direction perpendicular to the optical axis. For example, the N pole and S pole of the magnet unit may be arranged to face each other or be separated from each other in the circumferential direction of the magnetic member (130).

[0341] For example, the N pole and S pole of the magnet unit may be arranged to face each other or be separated from each other in a direction perpendicular to the direction in which the inner surface (19A) (or inner surface) and the outer surface (19B) (or outer surface) of the magnetic member (130) face each other. Two adjacent magnet units with different polarities may come into contact with each other.

[0342] Figure 14b shows the polarity according to another embodiment of the magnet unit (130-1).

[0343] Referring to Fig. 14b, the N pole and S pole of the magnet unit (130-1) may be arranged to face each other or be separated so that the inner surface (19A) (or inner surface) and the outer surface (19B) (or outer surface) of the magnetic member (130) face each other. Two adjacent magnet units with different polarities may come into contact with each other.

[0344] Figure 14c shows the polarity according to another embodiment of the magnet unit (130-1).

[0345] The magnet unit (130-1) of Fig. 14c may be a four-pole magnet having two N poles and two S poles. The magnet unit (130-1) may include a first magnet section, a second magnet section, and a partition wall positioned between the first magnet section and the second magnet section.

[0346] The first magnet portion may include a first N pole, a first S pole, and a first boundary portion positioned between the first N pole and the first S pole. The second magnet portion may include a second N pole, a second S pole, and a second boundary portion positioned between the second N pole and the second S pole. Each of the first boundary portion and the second boundary portion may include a substantially non-magnetic portion, a section having little polarity, and may be a naturally occurring portion to form a magnet composed of one N pole and one S pole.

[0347] The barrier separates or isolates the first and second magnetic sections, and may be a substantially non-magnetic portion with little polarity. For example, the barrier may be a non-magnetic material, air, or the like. The barrier may be referred to as a "neutral zone," "neutral region," or "non-magnetic barrier."

[0348] The partition wall is a part that is artificially formed when the first magnet part and the second magnet part are magnetized, and the width of the partition wall may be greater than the width of the first boundary part (or the width of the second boundary part). Here, the width of the partition wall may be the length in the direction from the first magnet part to the second magnet part. The width of the first boundary part (or the second boundary part) may be the length of the first boundary part in the direction from the N pole to the S pole of the first magnet part (or the second magnet part).

[0349] For example, the first magnet portion and the second magnet portion may be arranged to face each other in the circumferential direction of the magnetic member (130). In another embodiment, the first magnet portion and the second magnet portion may be arranged to face each other in the optical axis direction.

[0350] The description of the magnet unit (130-1) of FIGS. 14a to 14c can be applied or analogized to the remaining magnet units (130-2 to 230-4).

[0351] Figure 15a shows the arrangement of the sensing magnet (180) and the position sensor (170).

[0352] Referring to FIG. 15A, the aperture module (40) may further include a sensing magnet (180) disposed on the moving part. The position sensor (170) may correspond to, face, or overlap with the sensing magnet (180) in the optical axis direction. The sensing magnet (180) may move together with the moving part. The position sensor (170) may detect the sensing magnet (180). For example, the position sensor (170) may detect the magnetic field of the sensing magnet (180).

[0353] In FIG. 15A, the moving part may include a magnet (130A) including a plurality of magnet units (130-1 to 130-3) and a dummy member (135) disposed between two adjacent magnet units (e.g., 130-1, 130-3). In FIG. 15A, the magnet (130A) includes three magnet units, but in other embodiments, the magnet (130A) may include two or four or more magnet units. Additionally, the coil (120) may include two or four or more coil units.

[0354] The dummy member (135) can be brought into contact with two neighboring magnet units (e.g., 130-1, 130-3). The dummy member (135) can connect two neighboring magnet units (e.g., 130-1, 130-3). The magnet units (130-1 to 130-3) and the dummy member (135) can form a ring shape overall.

[0355] In another embodiment, the dummy member (135) may be spaced apart from two neighboring magnet units (e.g., 130-1, 130-3).

[0356] The dummy member (135) may be expressed as a “weight balancing member”, “weight member”, “balancing member”, or “non-magnetic member”. The dummy member (135) may be a non-magnetic member.

[0357] The sensing magnet (180) may overlap with the dummy member (135) in the direction of the optical axis. The sensing magnet (180) may be placed on the dummy member (135). For example, the sensing magnet (180) may be coupled or attached to the dummy member (135). The sensing magnet (180) may be placed on the lower surface of the dummy member (135). In another embodiment, the sensing magnet (180) may be placed on the upper surface of the dummy member (135).

[0358] The dummy member (135) may include a receiving portion for placing or receiving a sensing magnet (180). For example, the receiving portion may be a groove.

[0359] The dummy member (135) may not overlap with the coil (120) in the optical axis direction. For example, the dummy member (135) may overlap with the position sensor (170) in the optical axis direction.

[0360] In Fig. 15a, by providing a sensing magnet (180) spaced apart from the magnet units (130-1 to 130-3) for driving, the position sensor (170) can be placed far away from the coil units (120-1 to 120-3). By suppressing the influence of the magnetic field generated from the coil units (120-1 to 120-3) on the output of the position sensor (170), the reliability of the position sensor (170) can be improved.

[0361] In another embodiment, the sensing magnet (180) may be placed on the driving plate (80) of FIG. 4B. For example, the sensing magnet (180) may be placed on the lower or upper surface of the driving plate (80). In addition, for example, the driving plate (80) may include a receiving portion (e.g., a groove) for receiving or placing the sensing magnet (180).

[0362] The sensing magnet (180) may be a two-pole magnet having one N pole and one S pole. In another embodiment, the sensing magnet (180) may be a four-pole magnet having two N poles and two S poles.

[0363] In another embodiment, the moving member may include a "first part (130A) (or magnetic part)" including magnet units (130-1 to 130-3) and a "second part (135) (or non-magnetic part)" that is non-magnetic. The first part (130A) and the second part (135) may be connected to or in contact with each other. The first part (130A) and the second part (135) may have a ring shape with a hollow portion. The description of the shape of the magnetic member (130) of FIG. 2A may be applied or analogized to the moving member of FIG. 15A.

[0364] The sensing magnet (180) can overlap with the second part (135) (non-magnetic part) of the moving part in the direction of the optical axis. The sensing magnet (180) can be placed on the second part (135) (non-magnetic part) of the moving part. The sensing magnet (180) can be coupled with the second part (135) (non-magnetic part) of the moving part. The sensing magnet (180) can be placed on the lower surface of the second part (135) of the moving part. In another embodiment, the sensing magnet (180) can also be placed on the upper surface of the second part (135) of the moving part.

[0365] Fig. 15b shows another embodiment of the sensing magnet (180) of Fig. 15a.

[0366] Referring to FIG. 15b, the sensing magnet (180) may include N and S poles that are arranged alternately a plurality of times. For example, the N and S poles of the sensing magnet (180) may be arranged alternately a plurality of times (K times, where K is a natural number > 1) in a direction perpendicular to the optical axis. In FIG. 15b, the sensing magnet (180) has a rectangular parallelepiped shape, but in other embodiments, the sensing magnet (180) may have a curved shape corresponding to the circumference of the magnetic member (130).

[0367] In addition, the camera device (200) according to the embodiment may be included in an optical instrument that forms an image of an object in space by using the characteristics of light such as reflection, refraction, absorption, interference, and diffraction, and aims to increase the visual acuity of the eye, or to record and reproduce an image using a lens, or to optically measure, propagate or transmit an image, etc. For example, the optical device according to the embodiment may be a mobile phone, a smart phone, 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, etc., but is not limited thereto, and any device for taking a video or a photo may be used.

[0368] FIG. 16A shows a perspective view of an optical device (200A) according to an embodiment, FIG. 16B shows a perspective view of an optical device (200X) according to another embodiment, and FIG. 17 shows a configuration diagram of the optical device (200A) shown in FIGS. 16A and 16B.

[0369] For example, the embodiment of FIG. 16A may include a front camera in which the lens module (10) of the camera device (200) is positioned so that it faces the front of the body (850), and the embodiment of FIG. 16B may include a rear camera in which the lens module (10) of the camera device (200) is positioned so that it faces the rear of the body (850) of the optical device (200A). While FIG. 16B illustrates an example in which two rear cameras are positioned, other embodiments may include one or three or more rear cameras.

[0370] In other embodiments, the camera device (200) may be used for both the front camera and the rear camera.

[0371] Referring to FIGS. 16A, 16B, and 17, an optical device (200A, hereinafter referred to as a portable “terminal”) 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).

[0372] The body (850) is in the form of a bar, but is not limited thereto, and may have various structures such as a slide type, folder type, swing type, or swivel type in which two or more sub-bodies are connected to enable relative movement.

[0373] The wireless communication unit (710) may be configured to include one or more modules that enable wireless communication between the terminal (200A) and a wireless communication system or between the terminal (200A) and a network in which the terminal (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).

[0374] The A / V (Audio / Video) input unit (720) is for inputting audio signals or video signals and may include a camera (721) and a microphone (722), etc.

[0375] The camera (721) may include a camera device (200) according to an embodiment.

[0376] The sensing unit (740) can detect the current state of the terminal (200A), such as the open / close state of the terminal (200A), the position of the terminal (200A), the presence or absence of user contact, the orientation of the terminal (200A), and the acceleration / deceleration of the terminal (200A), and generate a sensing signal to control the operation of the terminal (200A). For example, if the terminal (200A) is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether power is supplied to the power supply unit (790), whether the interface unit (770) is connected to an external device, etc.

[0377] The input / output unit (750) is for generating input or output related to visual, auditory, or tactile senses. The input / output unit (750) can generate input data for controlling the operation of the terminal (200A) and can also display information processed in the terminal (200A).

[0378] The input / output unit (750) may include a key pad unit (730), a display module (751), an audio output module (752), and a touch screen panel (753). The key pad unit (730) may generate input data through key pad input.

[0379] The display module (751) may include a plurality of pixels whose colors change 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.

[0380] The audio output module (752) can output audio data received from the wireless communication unit (710) in a call signal reception mode, call mode, recording mode, voice recognition mode, or broadcast reception mode, or can output audio data stored in the memory unit (760).

[0381] The touch screen panel (753) can convert a change in electrostatic capacity caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal.

[0382] The memory unit (760) may store programs for processing and controlling the control unit (780), and may temporarily store input / output data (e.g., phone book, messages, audio, still images, photographs, videos, etc.). For example, the memory unit (760) may store images captured by the camera (721), such as photographs or videos.

[0383] The interface unit (770) serves as a passage connecting to an external device connected to the terminal (200A). The interface unit (770) receives data from the external device, supplies power and transmits it to each component inside the terminal (200A), or allows data inside the terminal (200A) to be transmitted to the external device. For example, the interface unit (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.

[0384] The control unit (controller, 780) can control the overall operation of the terminal (200A). For example, the control unit (780) can perform related control and processing for voice calls, data communications, video calls, etc.

[0385] The control unit (780) may be equipped with a multimedia module (781) for multimedia playback. The multimedia module (781) may be implemented within the control unit (780) or may be implemented separately from the control unit (780).

[0386] The control unit (780) can perform pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively.

[0387] The power supply unit (790) can supply power required for the operation of each component by receiving external power or internal power under the control of the control unit (780).

[0388] 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 just one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by those skilled in the art to which the embodiments pertain. Therefore, the contents related to such combinations and modifications should be construed as being included within the scope of the present invention.

[0389] The embodiment can be used in a lens module and camera device that can perform self-alignment between lenses using an aperture module.

[0390] The embodiment can be used in an aperture module, a lens module, and a camera module that can precisely change the opening of an aperture portion for a large-diameter lens to a desired size.

Claims

1. Lens barrel; A plurality of lenses arranged in the optical axis direction within the lens barrel; and An aperture module is included that is positioned between two adjacent lenses among the plurality of lenses, The above aperture module is a lens module including a coupling portion for coupling with at least one of the two lenses.

2. In paragraph 1, A lens module wherein the above-mentioned coupling part is for self-alignment with at least one of the two lenses.

3. In paragraph 1, A lens module wherein at least one lens comprises a protrusion that contacts the coupling portion of the aperture module.

4. In paragraph 3, A lens module in which the connecting portion of the aperture module overlaps with the protrusion of at least one lens in a direction perpendicular to the optical axis direction.

5. In paragraph 1, A lens module comprising a first coupling portion for coupling with a first lens, which is one of the two lenses, and a second coupling portion for coupling with a second lens, which is the other of the two lenses.

6. In paragraph 5, The first connecting portion includes a first alignment protrusion, The second connecting portion includes a second alignment protrusion, The first lens includes a first protrusion that engages with the first alignment protrusion, A lens module wherein the second lens includes a second protrusion that engages with the second alignment protrusion.

7. In paragraph 1, The above aperture module, a carrier including the above-mentioned coupling portion; and A lens module including an aperture portion that is arranged within the carrier and can vary the amount of incident light.

8. In paragraph 7, The carrier comprises a first carrier and a second carrier positioned below the first carrier and coupled with the first carrier, The above joint is, a first alignment protrusion arranged on the first carrier and adapted to engage with a first lens, which is one of the two lenses; and A lens module disposed on the second carrier and including a second alignment protrusion for engaging with the second lens, which is the other of the two lenses.

9. In paragraph 8, The above aperture portion is a lens module including a blade portion that adjusts the size of the opening through which light enters.

10. In paragraph 9, A lens module in which the lower surface of the second alignment protrusion is positioned lower than the lower surface of the blade portion.

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