Aperture device, camera device and optical device

Abstract

An aperture device according to the present embodiment comprises: a fixed portion; a movable portion disposed on the fixed portion; a magnet and a coil which move the movable portion; and blade portions forming a hole having a size that changes according to the movement of the movable portion, wherein the magnet is formed with a ring shape in which N and S poles alternate, the coil is formed with a ring shape having holes, and the holes of the coil are disposed to face the boundaries between the different poles of the magnet.

Description

Aperture devices, camera devices and optical instruments

[0001] The present embodiment relates to an aperture device, a camera device and an optical device.

[0002] Modern smartphones are equipped with cameras capable of taking high-resolution photos and videos.

[0003] In particular, recent smartphone cameras are equipped with various functions such as autofocus, image stabilization, and zoom, providing high satisfaction to many users.

[0004] However, conventional smartphone cameras suffer from performance limitations in low-light environments. This causes images captured in low-light conditions to be noisy and lack clarity, posing a problem.

[0005] The present embodiment aims to provide a camera device that can be used without performance limitations even in dark environments. Furthermore, the present invention aims to provide an aperture device for the aforementioned camera device.

[0006] In order to solve the above technical problem, an aperture device according to an embodiment of the present invention includes a fixed part; a moving part arranged on the fixed part; a magnet and a coil that move the moving part; and a blade part that forms a hole whose size changes according to the movement of the moving part, wherein the magnet is formed in a ring shape with alternating N and S poles, the coil is formed in a ring shape including a hole, and the hole of the coil is arranged to face a boundary surface of different poles of the magnet.

[0007] The coil includes a circumferential region and a radial region, and the circumferential region of the coil does not face the magnet, and the radial region of the coil can face the magnet.

[0008] The fixed portion includes a first protrusion that engages with a first hole of the blade portion, the movable portion includes a second protrusion that engages with a second hole of the blade portion, and the size of the first hole may be smaller than the size of the second hole.

[0009] The above moving part includes a rotating body, the magnet is arranged on one surface of the rotating body, and a first reinforcing member can be arranged on the other surface of the rotating body.

[0010] The above-mentioned fixed part includes a housing and a substrate disposed on the housing, and the coil can be formed as a pattern coil on the substrate.

[0011] A second reinforcing member may be arranged on one surface of the housing, and a third reinforcing member may be arranged between the other surface of the housing and the substrate.

[0012] A camera device according to the present embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens disposed on the image sensor; and the aperture device disposed on the lens.

[0013] An optical device according to the present embodiment may include a main body; the camera device disposed in the main body; and a display disposed in the main body and outputting at least one of an image and a video captured by the camera device.

[0014] In order to solve the above technical problem, a camera module according to an embodiment of the present invention includes a lens module including a lens barrel and a lens unit; a fixed unit disposed inside the lens barrel; a moving unit disposed on the fixed unit; a magnet disposed on the moving unit; a coil disposed outside the lens barrel; and a plurality of blades forming a hole whose size changes according to the movement of the moving unit.

[0015] The magnet is formed in a ring shape with alternating N and S poles, the coil is formed in a ring shape including a hole, and the hole of the coil can be arranged to overlap the boundary surface of the different poles of the magnet in the direction of the optical axis.

[0016] The coil includes a circumferential region and a radial region, and the circumferential region of the coil does not overlap with the magnet in the optical axis direction, and the radial region of the coil can overlap with the magnet in the optical axis direction.

[0017] The fixed portion includes a first protrusion that engages with a first hole of the plurality of blades, the moving portion includes a second protrusion that engages with a second hole of the plurality of blades, and the size of the first hole may be smaller than the size of the second hole.

[0018]

[0019] In order to solve the above technical problem, an aperture device according to another embodiment of the present invention includes a housing; a cover disposed on the housing; a rotating body disposed under the housing; a magnet and a coil for moving the rotating body; and a blade portion disposed between the cover and the housing and forming a blade hole whose size changes according to the movement of the rotating body, wherein the coil is disposed on the cover.

[0020] The above coil can be formed as a pattern coil on the cover.

[0021] The above magnet is placed on the above rotating body, and the magnet can be formed in a ring shape with alternating N and S poles.

[0022] The above coil can overlap the boundary surface of the N pole and S pole of the magnet in the direction of the optical axis.

[0023] The housing may include a first protrusion that engages with the first hole of the cover and the third hole of the blade portion, and the rotating body may include a second protrusion that engages with the third hole of the cover and the fourth hole of the blade portion.

[0024] The size of the first hole of the cover may be smaller than the size of the second hole of the cover, and the size of the third hole of the blade portion may be smaller than the size of the fourth hole of the blade portion.

[0025] The housing may include a guide hole through which the second protrusion of the rotating body passes.

[0026] An aperture device including a yoke that overlaps the magnet and the optical axis.

[0027] A camera device according to the present embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens disposed on the image sensor; and the aperture device disposed on the lens.

[0028] An optical device according to the present embodiment may include a main body; the camera device disposed in the main body; and a display disposed in the main body and outputting at least one of an image and a video captured by the camera device.

[0029] Through this embodiment, the camera function of a smartphone can be used without performance limitations even in a dark environment.

[0030] In addition, by forming the magnet into an ultra-thin ring shape, the driving distance during rotation can be reduced, and the weight can be reduced, minimizing the power consumption for driving the aperture device.

[0031] Additionally, an ultra-thin aperture device can be implemented by forming the cover, substrate, and coil as one piece.

[0032] Fig. 1 is a perspective view of an aperture device according to the present embodiment.

[0033] Fig. 2 is a perspective view of another direction of the aperture device according to the present embodiment.

[0034] Fig. 3 is an exploded perspective view of an aperture device according to the present embodiment.

[0035] Fig. 4 is an exploded perspective view of the aperture device according to the present embodiment from another angle.

[0036] Fig. 5 is a cross-sectional view of an aperture device according to the present embodiment.

[0037] Figure 6 is a perspective view of a cover member according to the present embodiment.

[0038] Figure 7 is a bottom perspective view of a cover member according to the present embodiment.

[0039] Fig. 8 is a perspective view of a spacer according to the present embodiment.

[0040] Fig. 9 is a perspective view of a blade portion and a spacer according to the present embodiment.

[0041] Fig. 10 is a bottom perspective view of the blade portion and spacer according to the present embodiment.

[0042] Fig. 11 is a perspective view of the combination of the housing, the rotor, and the spacer according to the present embodiment.

[0043] Fig. 12 is a perspective view of the combination of the rotating body and the first yoke according to the present embodiment.

[0044] Fig. 13 is a perspective view of the combination of a rotating body and a magnet according to the present embodiment.

[0045] Fig. 14 is a perspective view of a housing according to the present embodiment.

[0046] Fig. 15 is a perspective view of the combination of a housing and a substrate according to the present embodiment.

[0047] Fig. 16 is a perspective view of the combination of the housing, substrate, and coil according to the present embodiment.

[0048] Fig. 17 is a perspective view of the combination of a housing, coil, and magnet according to the present embodiment.

[0049] Fig. 18 is a perspective view of the combination of a coil and a magnet according to the present embodiment.

[0050] Fig. 19 is a perspective view of the combination of the housing, the rotating body, and the first yoke according to the present embodiment.

[0051] Fig. 20 is a drawing for explaining the combination of an aperture device and a lens module according to the present embodiment.

[0052] FIG. 21 is a cross-sectional view of an aperture device and a lens module according to another embodiment of the present invention.

[0053] Fig. 22 is a drawing for explaining a magnet placed in the aperture device of Fig. 21.

[0054] FIG. 23 is a cross-sectional view of an aperture device and a lens module according to another embodiment of the present invention.

[0055] Fig. 24 is a drawing for explaining the magnet and coil arranged in the aperture device of Fig. 23.

[0056] Fig. 25 is a drawing for explaining a magnet placed in the aperture device of Fig. 23.

[0057] Fig. 26 is a drawing for explaining the arrangement of the magnet and coil of the aperture device according to the present embodiment.

[0058] Fig. 27 is a drawing for explaining a coil arranged in the aperture device of Fig. 23.

[0059] Fig. 28 is an exploded perspective view of an aperture device according to the present embodiment.

[0060] Fig. 29 is a perspective view of a cover of an aperture device according to the present embodiment.

[0061] Fig. 30 is a perspective view of the housing of the aperture device according to the present embodiment.

[0062] Fig. 31 is a perspective view of the rotating body and magnet of the aperture device according to the present embodiment.

[0063] Fig. 32 is a perspective view of the blade portion of the aperture device according to the present embodiment.

[0064] Fig. 33 is an exploded perspective view of a camera device according to the present embodiment.

[0065] Fig. 34 is a perspective view of an optical device according to the present embodiment.

[0066] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0067] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0068] In addition, terms (including technical and scientific terms) used in this embodiment may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which this embodiment belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0069] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0070] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0071] Additionally, in describing the components of this embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0072] And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

[0073] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward direction based on one component.

[0074]

[0075] Below, the configuration of the aperture device according to the present embodiment is described with reference to the drawings.

[0076] FIG. 1 is a perspective view of an aperture device according to the present embodiment, FIG. 2 is a perspective view of another direction of the aperture device according to the present embodiment, FIG. 3 is an exploded perspective view of the aperture device according to the present embodiment, FIG. 4 is an exploded perspective view of the aperture device according to the present embodiment from another angle, FIG. 5 is a cross-sectional view of the aperture device according to the present embodiment, FIG. 6 is a perspective view of a cover member according to the present embodiment, FIG. 7 is a bottom perspective view of the cover member according to the present embodiment, FIG. 8 is a perspective view of a spacer according to the present embodiment, FIG. 9 is a perspective view of a blade portion and a spacer according to the present embodiment, FIG. 10 is a bottom perspective view of a blade portion and a spacer according to the present embodiment, FIG. 11 is a combined perspective view of a housing, a rotating body, and a spacer according to the present embodiment, FIG. 12 is a combined perspective view of a rotating body and a first yoke according to the present embodiment, FIG. 13 is a combined perspective view of a rotating body and a magnet according to the present embodiment, and FIG. 14 is This is a perspective view of a housing according to this embodiment, FIG. 15 is a combined perspective view of a housing and a substrate according to this embodiment, FIG. 16 is a combined perspective view of a housing, a substrate, and a coil according to this embodiment, FIG. 17 is a combined perspective view of a housing, a coil, and a magnet according to this embodiment, FIG. 18 is a combined perspective view of a coil and a magnet according to this embodiment, and FIG. 19 is a combined perspective view of a housing, a rotating body, and a first yoke according to this embodiment.

[0077] The aperture device (100) may be an aperture. The aperture device (100) can control the amount of light passing through the lens. The aperture device (100) can control the amount of light incident on the image sensor (60). The aperture device (100) can control the size of the hole through which light passes.

[0078] The aperture device (100) can be placed on the lens. The aperture device (100) can be placed on the lens. The aperture device (100) can be combined with the lens. The aperture device (100) can be fixed to the lens. The aperture device (100) can move integrally with the lens. The aperture device (100) can move together with the lens. The aperture device (100) can move in the optical axis direction together with the lens.

[0079] The aperture device (100) may include a blade portion (150) for controlling the amount of incident light. For example, the blade portion (150) may be movable, and an incident hole (or opening) whose size may be changed in multiple stages or continuously may be implemented according to the position or displacement of the blade portion (150). The aperture device (100) may include an incident hole with different sizes that may be changed in multiple stages or continuously, and light may be incident through the incident hole (or opening).

[0080] The aperture device (100) may include a fixed portion. The fixed portion may be a stator. The fixed portion may be a cover member (300). The fixed portion may be a housing (140). The fixed portion may be a portion that is relatively fixed with respect to the movable portion. The fixed portion may movably support the movable portion.

[0081] The aperture device (100) may include a moving part. The moving part may be a rotor. The moving part may be a rotating body (110). The moving part may be a movable part. The moving part may be a mover. The moving part may be a mover. The moving part may be a carrier.

[0082] In the aperture device (100), the moving part (or rotating part) may be an element or component that moves or rotates with respect to the fixed part. In the aperture device (100), the fixed part may be an element or component that does not move or rotate with the moving part of the aperture device (100). In the aperture device (100), the fixed part may be a fixed element or component that moves the moving part or drives the blade part (150). The fixed part may also be expressed as a “fixed body.”

[0083] In the aperture device (100), the moving part may include a rotating body (110) and a blade part (150). In the aperture device (100), the moving part may include a component (e.g., a magnet (130)) that is coupled to the rotating body (110). In the aperture device (100), the moving part may include a spacer (160).

[0084] In the aperture device (100), the fixing member may include at least one of the housing (140) and the cover member (300). In the aperture device (100), the fixing member may include a configuration that is coupled to the housing (140) or the cover member (300). In the aperture device (100), the fixing member may include at least one of the circuit board (190) and the coil (180). In the aperture device (100), the fixing member may further include a configuration (e.g., a position sensor (185), a coil (180), a reinforcing member (173)) that is coupled to the circuit board (190).

[0085]

[0086] The aperture device (100) may include a cover member (300) for accommodating a rotating body (110). The cover member (300) may be alternatively expressed as a “cover.” The cover member (300) may be placed on the rotating body (110) and may be coupled with a housing (140).

[0087] The cover member (300) may have an open lower side. The cover member (300) may include an upper plate (301) and a side plate (302). The side plate (302) may be connected to the upper plate (301). The side plate (302) may extend downward from the upper plate (301).

[0088] The cover member (300) may include an opening (303) formed in the upper plate (301). The opening (303) may be a hole or hollow that penetrates the upper plate (301) in the first direction (OA). The shape of the upper plate (301) may be circular, but in other embodiments, the upper plate (301) may have a polygonal shape, such as a square or a pentagon. The shape of the side plate (302) may be circular, but in other embodiments, the side plate (302) may have a polygonal shape, such as a square or a pentagon.

[0089] The cover member (300) may include a coupling hole (58: 58A to 58H) formed in the upper plate (301). The coupling hole (58) may be coupled with a first protrusion (71: 71A to 71H) of the housing (140) described below, so that the cover member (300) and the housing (140) may be fixed. The coupling hole (58) may correspond to the first protrusion (71) of the housing (140) in the first direction. The coupling hole (58) may be formed to penetrate the upper plate (301). The coupling hole (58) may be formed to be recessed from the lower surface of the upper plate (301).

[0090] The coupling hole (58) may have a shape corresponding to the first protrusion (71) of the housing (140), for example, a circular shape. At least a portion (e.g., an upper portion) of the first protrusion (71) may be disposed within the coupling hole (58). At least a portion (e.g., an upper portion) of the first protrusion (71) may overlap the coupling hole (58) in a direction perpendicular to the first direction. At least a portion (e.g., an upper portion) of the first protrusion (71) may be in contact with the coupling hole (58). At least a portion (e.g., an upper portion) of the first protrusion (71) may be spaced apart from the coupling hole (58).

[0091] The cover member (300) may include guide holes (59: 59A to 59H) formed in the upper plate (301). The guide hole (59) may be an escape hole to avoid spatial interference with the second protrusion (21: 21A to 21H) of the rotating body (110) described later. The guide hole (59) may correspond to, face, or overlap the second protrusion (21) of the rotating body (110) in the first direction. A plurality of guide holes (59A to 59H) may be arranged spaced apart from each other around the opening (303) of the upper plate (301). A pair of corresponding grooves (e.g., 58A) and grooves (e.g., 59A) may be arranged adjacent to each other. At this time, a pair of grooves (e.g., 58A) and grooves (e.g., 59A) may correspond to a pair of first projections (e.g., 71A) and second projections (e.g., 21A) that engage with one blade (e.g., 150A).

[0092] The guide hole (59) may be formed to penetrate the upper plate (301). The guide hole (59) may be formed to be sunken from the lower surface of the upper plate (301). The guide hole (59) may extend along the path along which the second protrusion (21) of the rotating body (110) moves. This is because the lower surface of the upper plate (301) of the cover member (300) must not obstruct the movement of the second protrusion (21) of the rotating body (110). The path along which the second protrusion (21) moves may be a curve, and the guide hole (59) may include a curved shape or a curved shape. The extension length of the guide hole (59) in the movement direction of the second protrusion (21) may be greater than the diameter of the second protrusion (21).

[0093] At least a portion (e.g., an upper portion) of the second protrusion (21) of the rotating body (110) may be positioned within the guide hole (59). At least a portion (e.g., an upper portion) of the second protrusion (21) may overlap the guide hole (59) in a direction perpendicular to the first direction. At least a portion (e.g., an upper portion) of the second protrusion (21) may be spaced apart from the guide hole (59). The upper surface of the second protrusion (21) may be spaced apart from the bottom surface of the guide hole (59). This is because the second protrusion (21) must move.

[0094] The cover member (300) may include a protrusion (57: 57A to 57H) formed on the lower surface of the upper plate (301). The protrusion (57) may press the blade portion (150) and spacer (160) described later in the first direction (OA). Through this, the blade portion (150) may be prevented from moving in the first direction (OA) during rotational movement.

[0095] The side plate (302) of the upper plate (301) can be coupled with the housing (140). The cover member (300) can include a coupling plate (304) extending downward from the upper plate (301). The length of the coupling plate (304) extending downward may be longer than the length of the side plate (302) extending downward. The coupling plate (304) can be fitted into the side surface of the housing (140).

[0096]

[0097] The blade portion (150:151, 152) may be disposed within the cover member (300). The blade portion (150) may be disposed within the housing (140). The blade portion (150) may be disposed on the rotating body (110). The blade portion (150) may include an opening corresponding to, opposite to, or overlapping with the opening (303) of the cover member (300).

[0098] The blade portion (150) can adjust the size of the opening through which light is incident. The opening of the blade portion (150) can correspond to or face the opening (161) of the spacer (160) in the first direction (OA). At least a portion of the opening of the blade portion (150) can overlap the opening (161) of the spacer (160) in the first direction (OA).

[0099] The blade section (150) may include a plurality of blades (151A to 151D, 152A to 152D). The number of blades may be eight. In other embodiments, the number of blades may be two to five, or seven or more.

[0100] A plurality of blades (151A to 151D, 152A to 152D) can form an opening. For example, each of the plurality of blades (151A to 151D, 152A to 152D) can be arranged so that at least a portion of the blades overlap in the first direction, thereby forming an opening.

[0101] Some of the plurality of blades (151A to 151D) (151A, 151C) may be arranged on other remaining portions (151B, 151D) of the plurality of blades (151A to 151D). For example, the plurality of blades (151A to 151D, 152A to 152D) may be arranged around a center line, and may be arranged to wrap around the center line. At this time, the center line may be a straight line that is the same as the optical axis. Alternatively, the center line may be a straight line that is parallel to the optical axis and passes through the center (101) of the opening, and the opening may be an opening (303) of the cover member (300), an opening of the blade portion (150), an opening (161) of the spacer (160), an opening of the rotating body (110), or an opening (144) of the housing (140).

[0102] Any one blade (e.g., 151A) may be arranged to overlap with other adjacent or adjacent blades (e.g., 151B to 151D) in a first direction. For example, the plurality of blades (151A to 151D, 152A to 152D) may be arranged alternately upward or downward in a clockwise or counterclockwise direction. In another embodiment, the plurality of blades (151A to 151D, 152A to 152D) may be sequentially stacked upward or downward in a clockwise or counterclockwise direction.

[0103] For example, at least a portion of the inner surface of each of the blades (151A to 151D, 152A to 152D) may include a bent or curved portion. For example, the inner surface of each of the blades (151A to 151D, 152A to 152D) may include a curved or concave portion. For example, the curved or concave portion of each of the blades (151A to 151D, 152A to 152D) may be arranged in a round shape toward the optical axis. The shape of the opening (303) when viewed from above or in the first direction may include at least one of a circle, an ellipse, or a polygon (e.g., a triangle, a square, a pentagon, or a hexagon). The inner surface of each of the blades (151A to 151D, 152A to 152D) may be divided into a plurality of regions, and some of the plurality of regions may be formed as curved surfaces, and the rest may be formed as flat surfaces. Through this, the blade hole can be implemented in a shape close to a circle.

[0104] At least a portion of the blade portion (150) may be coupled with the housing (140), and at least another portion of the blade portion (150) may be coupled with the rotating body (110). The blade portion (150) may include a first portion coupled with the housing (140) and a second portion coupled with the rotating body (110). For example, the blade portion (150) may be rotatable about the first portion of the blade portion (150), and the second portion of the blade portion (150) may move or rotate in conjunction with the rotating body (110).

[0105] The blade portion (150) may include a first hole (51:51A to 51D, 53:53A to 53D) for coupling with the first protrusion (71) of the housing (140). The first hole (51, 53) of the blade portion (150) may be fitted or inserted into the first protrusion (71) of the housing (140) so that the blade portion (150) can rotate.

[0106] The blade portion (150) may include a second hole (52: 52A to 52D, 54: 54A to 54D) for coupling with the second protrusion (21) of the rotating body (110). The second hole (52, 54) of the blade portion (150) may be fitted or inserted into the second protrusion (21) of the rotating body (110) so that the blade portion (150) can rotate and move.

[0107] In a state where the first hole (51, 53) of the blade portion (150) is fitted into the first protrusion (71), the blade portion (150) can only rotate around the first protrusion (71). In a state where the second protrusion (21) is fitted into the second hole (52, 54) of the blade portion (150), the second hole (52, 54) of the blade portion (150) can extend in one direction so that the second protrusion (21) can move. The second hole (52, 54) can extend in a direction intersecting with the rotational direction of the blade portion (150) centered on the first protrusion (71).

[0108] The second hole (52, 54) of the blade portion (150) may be formed to correspond to the path along which the second protrusion (21) of the rotating body (110) moves. The second hole (52, 54) of the blade portion (150) may be extended to guide the path along which the second protrusion (21) of the rotating body (110) moves. The second hole (52, 54) of the blade portion (150) may be extended or formed to be inclined with respect to the rotational direction of the rotating body (110).

[0109]

[0110] The aperture device (100) may include a spacer (160) disposed between some of the plurality of blades and the rest. The spacer (160) may serve to support at least a portion of the blade portion (150). The spacer (160) may support at least one of the blades (151A to 151D, 152A to 152D). Among the plurality of blades (151A to 151D, 152A to 152D), a blade disposed on one surface of the spacer (160) may be referred to as a first blade portion (151), and a blade disposed on the other surface of the spacer (160) may be referred to as a second blade portion (152). The spacer (160) may be alternatively expressed as a “base sheet” or a “support sheet.”

[0111] The spacer (160) may have a circular opening (161). The opening (161) may be a through hole. The shape of the opening of the blade portion (150) may have a polygonal shape or a circular shape depending on the positions of the blades (151A to 151D, 152A to 152D). The spacer (160) may play a role in making the shape of the opening of the aperture device (100) that receives light incident from the outside circular.

[0112] The spacer (160) may include a coupling hole (62: 62A to 62H) into which the second protrusion (21) of the rotating body (110) is inserted. The coupling hole (62) may be formed at a position corresponding to a guide hole (59) formed in the upper plate (301) of the cover member (300). A plurality of coupling holes (62: 62A to 62H) may be spaced apart from each other and arranged around the opening (161) of the spacer (160). The coupling hole (62) may extend along a path along which the second protrusion (21) of the rotating body (110) moves. This is because the spacer (160) should not interfere with the movement of the second protrusion (21) of the rotating body (110). The path along which the second protrusion (21) moves may be a curve, and the coupling hole (62) may include a curved or curved shape.

[0113] The spacer (160) may include escape portions (63: 63A to 63H) to avoid spatial interference with the first protrusion (71) of the housing (140). The escape portions (63) may be recessed from the outer surface of the spacer (160) or may be in the form of through holes. For example, the escape portions (63) of the spacer (160) may be through holes. The escape portions (63) of the spacer (160) may be grooves.

[0114] A settling groove (64: 64A to 64D), which is a groove that is sunken from the outer surface of the spacer (160), may be formed in an adjacent area of ​​some of the escape parts (63A to 63H) (63A, 63C, 63E, 63G). The settling groove (64) may be formed in a shape corresponding to a protrusion (72: 72A to 72D) that protrudes from the side plate of the housing (140). When the settling groove (64) is fitted into the protrusion (72), movement in the rotational direction can be prevented and the position can be fixed.

[0115]

[0116] The rotating body (110) may be placed within the cover member (300). The rotating body (110) may be placed below the blade portion (150). The rotating body (110) may be rotatable. The rotating body (110) may be connected to the blade portion (150), and the opening of the blade portion (150) may be changed by the rotation of the rotating body (110).

[0117] The rotating body (110) may include an opening corresponding to or opposite to the opening of the blade portion (150), the opening (303) of the cover member (300), or the opening (161) of the spacer (160) in the first direction. The opening of the rotating body (110) may be a through hole or hollow portion penetrating the rotating body (110) in the first direction.

[0118] The rotating body (110) may be alternatively expressed as “rotor”, “driving body”, “driving plate”, “rotating plate”, “rotating frame”, “moving plate”, “moving body”, “rotating ring”, “driving ring”, or “driving frame”.

[0119] The size (e.g., area or diameter) of the opening of the rotor (110) may be larger than the size of the opening of the blade portion (150). In this case, the size of the opening of the blade portion (150) may be the maximum size (maximum area or maximum diameter). In another embodiment, the size (e.g., area or diameter) of the opening (401) of the rotor (110) may be the same as the size of the opening of the blade portion (150).

[0120] The size (e.g., area or diameter) of the opening of the rotor (110) may be larger than the size of the opening (161) of the spacer (160). In another embodiment, the size (e.g., area or diameter) of the opening (401) of the rotor (110) may be the same as the size of the opening (161) of the spacer (160).

[0121] The rotating body (110) may include a circular ring shape to facilitate rotation. One surface of the rotating body (110) may include a first receiving portion for receiving a first reinforcing member (120). The other surface of the rotating body (110) may include a second receiving portion for receiving a magnet (130). For example, the first and second receiving portions of the rotating body (110) may be “first and second grooves” or “first and second receiving grooves.” One surface of the rotating body (110) may include a first surface (24) connected to the inner surface and a second surface (23) connected to the outer surface. The first receiving portion for receiving the first yoke (120) may be arranged between the first surface (24) and the second surface (23).

[0122] The first reinforcing member (120) can prevent the rotating body (110) from being damaged, deformed, or broken due to impact or external force. For example, the first reinforcing member (120) can include at least one of a magnetic material, a metal material, or an injection-molded material (e.g., plastic or resin). The first reinforcing member (120) can be integrally connected to the rotating body (110) by an insert injection method. The first reinforcing member (120) can also perform a yoke function to enhance the electromagnetic force between the coil (180) and the magnet (130). The first reinforcing member (120) can be arranged for the purpose of preventing the magnetic force of the magnet (130) from escaping to the outside and maintaining a holding force.

[0123] The rotating body (110) may include a second protrusion (21: 21A to 21H) for rotating or moving the blade portion (150). The second protrusion (21) may be connected or interlocked with the blade portion (150). The second protrusion (21) may be alternatively expressed as a “moving axis,” a “pillar portion,” a “protrusion,” or a “connecting axis.” For example, the second protrusion (21) may have a cylindrical shape or a rod shape.

[0124] The rotor (110) may include a plurality of second protrusions (21A to 21H) corresponding to a plurality of blades (151A to 151D, 152A to 152D). For example, the number of second protrusions (21) may be equal to the number of blades. The plurality of second protrusions (21A to 21H) may be arranged spaced apart from each other.

[0125] The second protrusion (21) may protrude or extend from one surface of the rotating body (110). The second protrusion (21) may protrude or extend from one surface in a direction toward the blade portion (150). The second protrusion (21) may protrude from the first surface (24) connected to the inner circumferential surface of the rotating body (110).

[0126] One end of the second protrusion (21) can be inserted or fitted into the second hole (52, 54) of the blade portion (150). For example, one end of each of the plurality of second protrusions (21A to 21H) can be inserted or fitted into the second hole (52, 54) of the blades (151A to 151D, 152A to 152D).

[0127] The rotating body (110) may include a guide protrusion (22) connected to the second protrusion (21). The guide protrusion (22) may protrude from one surface of the rotating body (110) by a length smaller than the length by which the second protrusion (21) protrudes. The guide protrusion (22) may be formed to protrude along the circumferential direction.

[0128] The guide protrusion (22) may include a first guide protrusion (22A, 22C, 22E, 22G) that engages with the second hole (52) of the first blade portion (151) and a second guide protrusion (22B, 22D, 22F, 22H) that engages with the second hole (54) of the second blade portion (152). The first guide protrusions (22A, 22C, 22E, 22G) and the second guide protrusions (22B, 22D, 22F, 22H) may be arranged alternately along the circumferential direction.

[0129] The length of the first guide protrusion (22A, 22C, 22E, 22G) protruding from one surface of the rotating body (110) may be greater than the length of the second guide protrusion (22B, 22D, 22F, 22H) protruding from one surface of the rotating body (110). Since the first blade portion (151) is arranged further away from the rotating body (110) than the second blade portion (152), the protrusion length of the first guide protrusion (22A, 22C, 22E, 22G) in the first direction may be greater than the protrusion length of the second guide protrusion (22B, 22D, 22F, 22H) in the first direction.

[0130] The outer surface of the rotating body (110) may include recessed portions (25: 25A to 25H) that are formed to be recessed inward. One recessed portion (25) may include a first region (26A) connected to the second surface (23) of the rotating body (110), a second region (26B) and a third region (26C) which are both sides connected to the first region (26A). A plurality of recessed portions (25A to 25H) may be formed to be spaced apart from each other along the circumferential direction on the outer surface of the rotating body (110). The recessed portion (25) may have a structure in which the first protrusion (71) of the housing (140) reciprocates in the recessed portion (25) when the rotating body (110) rotates. The recessed portion (25) may be an area for avoiding the first protrusion (71) of the housing (140) when the rotating body (110) rotates.

[0131]

[0132] The housing (140) may be positioned below the rotating body (110) and may accommodate at least a portion of the rotating body (110). The rotating body (110) and the housing (140) may be formed by an injection molding method using an injection mold. The rotating body (110) and the housing (140) may be formed of an injection moldable material, such as plastic or resin.

[0133] The housing (140) may include an internal space capable of accommodating at least a portion of the rotating body (110). The housing (140) may accommodate at least a portion of the lens module (10) therein. The housing (140) may include an opening (144). The opening (144) may be a through hole or a hollow portion penetrating the housing (140) in a first direction. For example, the housing (140) may have a cylindrical shape. The upper surface of the housing (140) may face or overlap with the lower surface of the rotating body (110) in the first direction.

[0134] The housing (140) may include a top plate (141) and a side plate protruding upward from the top plate (141). The side plate of the housing (140) may include a first side plate (142) formed as a curved surface when viewed from the outside and a second side plate (143) formed as a flat surface when viewed from the outside. The first side plate (142) and the second side plate (143) may be arranged alternately along the circumferential direction. The second side plate (143) of the housing (140) may face the joining plate (304) of the cover member (300).

[0135] On one surface of the second side plate (143), protrusions (72: 72A to 72D) and recesses (74: 74A to 74D) may be alternately arranged. The protrusions (72) may be formed in a shape corresponding to the mounting grooves (64) of the spacer (160). When the protrusions (72) are fitted into the mounting grooves (64), they can be prevented from moving in the rotational direction and fixed in position.

[0136] The housing (140) may include a hole (145) through which at least a portion of the circuit board (190) is withdrawn between the upper plate (141) and the side plate. The hole (145) may be a hole through which the connection portion (91) of the circuit board (190) is withdrawn to the outside. The hole (145) may be formed in a shape corresponding to the connection portion (91) of the circuit board (190).

[0137] The first protrusion (71: 71A to 71H) of the housing (140) may protrude upward from the upper plate (141) of the housing (140). The first protrusion (71) may be a protrusion or a protrusion protruding from the upper plate (141) or the upper portion of the housing (140). The first protrusions (71A to 71H) may be arranged to be spaced apart from each other. The first protrusion (71) may be expressed as a “rotation axis”, a “column”, a “protrusion”, or a “coupling axis”. For example, the first protrusion (71) may have a cylindrical shape or a rod shape.

[0138] The first protrusion (71) can be inserted or fitted into the first hole (51, 53) of the blade portion (150). The first protrusion (71) can be combined with the first hole (51, 53) of the blade portion (150). To facilitate rotation, a lubricant or grease can be placed within the first protrusion (71) and the first hole (51, 53) of the blade portion (150).

[0139] The first protrusion (71) may include a plurality of first protrusions (71A to 71H) corresponding to a plurality of blades (151A to 151D, 152A to 152D). The number of the first protrusions (71) may be equal to the number of blades. Each of the first protrusions (71A to 71H) may be inserted or fitted into a corresponding one of the first holes (51A to 51D, 53A to 53D) of the blades (151A to 151D, 152A to 152D).

[0140] The housing (140) may include a step portion (75: 75A to 75D) protruding from the upper plate (141). The step portion (75) may be formed between two first protrusions that are spaced apart from each other. The step portion (75) may have a shape corresponding to the shape of the avoidance portion (92) of the circuit board (190). When the rotating body (110) is arranged within the housing (140), the step portion (75) may prevent a step from being formed between the substrate (190) facing the rotating body (110) and the housing (140).

[0141] The housing (140) may include a second reinforcing member (175) arranged on the lower surface of the upper plate (141). The second reinforcing member (175) may prevent the housing (140) from being damaged, deformed, or broken due to impact or external force. For example, the second reinforcing member (175) may include at least one of a magnetic material, a metal material, or an injection-molded material (e.g., plastic or resin). The second reinforcing member (175) may be integrally combined with the housing (140) by an insert injection method. The second reinforcing member (175) may also perform a yoke function to enhance the electromagnetic force between the coil (180) and the magnet (130). The second reinforcing member (175) may be arranged for the purpose of preventing the magnetic force of the magnet (130) from escaping to the outside and maintaining a holding force.

[0142]

[0143] The aperture device (100) may include a circuit board (190) electrically connected to the coil (180). The circuit board (190) may be disposed in the housing (140). The circuit board (190) may be disposed on the upper plate (141) of the housing (140). The circuit board (190) may be disposed in an internal space formed by the upper plate (141) and the side plate of the housing (140). The circuit board (190) may be coupled to the housing (140) or fixed to the housing (140). The circuit board (190) may be coupled to the housing (140) by an adhesive.

[0144] The aperture device (100) may include a third reinforcing member (173) disposed on at least a portion of the circuit board (190). The third reinforcing member (173) may prevent the circuit board (190) from being damaged, deformed, or broken due to impact or external force. For example, the third reinforcing member (173) may include at least one of a metal material or an injection-molded material (e.g., plastic or resin).

[0145] The third reinforcing member (173) may also function as a heat dissipation member to dissipate heat generated from the circuit board (190) and components coupled to the circuit board (190) (e.g., coil (180), position sensor (185), or capacitor). In this case, the third reinforcing member (173) may also be expressed as a “heat dissipation member” or “heat dissipation body.” The third reinforcing member (173) may also function as a yoke to enhance the electromagnetic force between the coil (180) and the magnet (130).

[0146]

[0147] The aperture device (100) may include a driving unit that drives the blade unit (150) or rotates or moves the rotating body (110). The driving unit of the aperture device (100) may include a coil (180) that is arranged, coupled, or fixed to the housing (140) and a magnet (130) that is arranged, coupled, or fixed to the rotating body (110). The rotating body (110) may be rotated or tilted within a preset range by the interaction between the coil (180) and the magnet (130).

[0148] The aperture device (100) may include a magnet (130). The driving unit may include a magnet (130). The magnet (130) may be disposed on the moving unit. The magnet (130) may be disposed on the moving unit. The magnet (130) may have a ring shape. The magnet (130) may have a shape including an opening. The magnet (130) may have N poles (31A, 31C, 31E, 31G) and S poles (31B, 31D, 31F, 31H) alternately disposed along the circumferential direction. The magnet (130) may be coupled to the moving unit. The magnet (130) may be fixed to the moving unit. The magnet (130) may be bonded to the moving unit with an adhesive.

[0149] The magnet (130) is movable. The magnet (130) can move through interaction with the coil (180). The magnet (130) can move integrally with the moving part. The magnet (130) can move together with the moving part. The magnet (130) can be placed on the lower surface of the moving part.

[0150] The coil (180: 180A to 180D) may be placed on a circuit board (190). The coil (133) may be formed on the circuit board (190). The coil (180) may be formed as a pattern coil on the circuit board (190). The coil (180) may be formed integrally with the circuit board (190). The coil (180) may include a plurality of coils (180A to 180D) that are spaced apart from each other.

[0151] Each of the plurality of coils (180A to 180D) may be formed in a ring shape. The coil (180) may be formed in a ring shape including a hole (81). The coil (180) may include a first region (82A), a second region (82B) connected to the first region (82A), a third region (82C) opposite the first region (82A), and a fourth region (82D) opposite the second region (82B).

[0152] In the coil (180), each of the two opposing regions may be arranged to face each other's poles of the magnet (130). Each of the two opposing regions of the coil (180) may overlap each other's poles of the magnet (130) in the optical axis direction. For example, the first region (82A) may face the south pole (31F), and the third region (82C) may face the north pole (31E). The first region (82A) may overlap the south pole (31F) in the optical axis direction, and the third region (82C) may overlap the north pole (31E) in the optical axis direction. At this time, the first region (82A) and the third region (82C) of the coil (180) may be regions that generate a Lorentz force by electromagnetic interaction with the magnet (130).

[0153] Each of the two opposite regions in the coil (180) may be arranged to face both different poles of the magnet (130). Each of the two opposite regions in the coil (180) may overlap both different poles of the magnet (130) in the optical axis direction. Each of the two different opposite regions in the coil (180) may not face the magnet (130). Each of the two different opposite regions in the coil (180) may not overlap with the magnet (130) in the optical axis direction. For example, the second region (82B) and the fourth region (82D) may face both the N pole (31E) and the S pole (31F). The second region (82B) and the fourth region (82D) may not face the magnet (130). At this time, the second region (82B) and the fourth region (82D) of the coil (180) may be regions that do not generate the Lorentz force.

[0154] The coil (180) can be positioned corresponding to the magnet (130). The coil (180) can face the magnet (130). The coil (180) can overlap the magnet (130). The coil (180) can overlap the magnet (130) in the optical axis direction. The coil (180) can face both the N pole and the S pole of the magnet (130). The coil (180) can be positioned to face the boundary surface of the N pole region and the S pole region of the magnet (130). The hole (81) of the coil (180) can be positioned to face the boundary surface of different poles of the magnet (130).

[0155] The coil (180) can electromagnetically interact with the magnet (130). When current is applied to the coil (180), the magnet (130) can move due to the interaction between the electromagnetic field of the coil (180) and the electromagnetic field of the magnet (130). The coil (180) can move the magnet (130). The coil (180) can remain relatively fixed when the magnet (130) moves.

[0156] Alternatively, the coil (180) may be placed on the moving part and the magnet (130) may be placed on the fixed part. The coil (180) may move together with the moving part and the magnet (130) may be fixed.

[0157] The aperture device (100) may include a sensor (185). The driving unit may include the sensor (185). The sensor (185) may be disposed on a circuit board (190). The sensor (185) may be electrically connected to the circuit board (190). The sensor (185) may include a plurality of terminals connected to the circuit board (190).

[0158] The sensor (185) can detect the magnet (130). The sensor (185) may be a Hall sensor. The sensor (185) can detect the magnetic force of the magnet (130). The sensor (185) may be positioned corresponding to the magnet (130). The sensor (185) may overlap the magnet (130) in the optical axis direction. Control of the blade unit (150) can be fed back in real time through the position of the magnet (130) detected by the sensor (185). That is, the blade unit (150) can be feedback-controlled in real time by the sensor (185).

[0159]

[0160] As the rotor (110) moves or rotates, the second protrusions (21A to 21H) of the rotor (110) fitted into the second holes (52A to 52D, 54A to 54D) of the blades (151A to 151D, 152A to 152D) can move. As the second protrusions (21A to 21H) of the rotor (110) move, the blades (151A to 151D, 152A to 152D) can be folded toward the optical axis, or conversely, the blades (151A to 151D, 152A to 152D) can be spread outward.

[0161] Referring to FIG. 9, as the second protrusions (21A to 21H) of the rotating body (110) move from one side (P) to the other side (Q) of the second holes (52, 54) of the blades (151A to 151D, 152A to 152D), the opening of the blade portion (150) can be changed from the minimum size to the maximum size. At this time, the blade portion (150) can pivotally move about the first protrusion (71) while the first holes (51, 53) are inserted into the first protrusion (71) of the housing (140). As the second protrusions (21A to 21H) of the rotating body (110) move from one side (P) to the other side (Q) of the second holes (52, 54) of the blades (151A to 151D, 152A to 152D), the blade portion (150) can rotate clockwise around the first protrusion (71) of the housing (140). The opening of the blade portion (150) may be referred to as a blade hole.

[0162] For example, when the second protrusions (21A to 21H) of the rotating body (110) are positioned on one side (P) of the second holes (52A to 52D, 54A to 54D) of the blades (151A to 151D, 152A to 152D), the opening of the blade portion (150) may be the minimum size. When the second protrusions (21A to 21H) of the rotating body (110) are positioned on the other side (P) of the second holes (52A to 52D, 54A to 54D) of the blades (151A to 151D, 152A to 152D), the opening of the blade portion (150) may be the maximum size.

[0163] According to a modified example, the second projections (21A to 21H) of the rotor (110) can move from a state closest to one side (P) of the second holes (52A to 52D, 54A to 54D) of the blades (151A to 151D, 152A to 152D) to a state closest to the other side (Q).

[0164] As the blades (151A to 151D, 152A to 152D) rotate, the size of the opening of the blade portion (150) can be changed stepwise or continuously. For example, the opening of the blade portion (150) can be adjusted or changed to have three or more different sizes. For example, the opening of the blade portion (150) can be adjusted or changed to have ten or fewer different sizes. For example, the opening of the blade portion (150) can be adjusted or changed to have three or more and seven or fewer different sizes.

[0165] For example, the steps in which the size of the opening is changed may include an initial step, two or more intermediate steps, and a final step. For example, the initial step may be a step in which the opening of the blade portion (150) has a maximum size, the final step may be a step in which the opening of the blade portion (150) has a minimum size, and the two or more intermediate steps may be steps in which the opening has different intermediate sizes. The intermediate sizes may be larger than the minimum size and smaller than the maximum size.

[0166]

[0167] FIG. 20 is a drawing for explaining the combination of an aperture device and a lens module according to the present embodiment, FIG. 21 is a cross-sectional view of an aperture device and a lens module according to another embodiment of the present invention, FIG. 22 is a drawing for explaining a magnet arranged in the aperture device of FIG. 21, FIG. 23 is a cross-sectional view of an aperture device and a lens module according to another embodiment of the present invention, FIG. 24 is a drawing for explaining a magnet and a coil arranged in the aperture device of FIG. 23, FIG. 25 is a drawing for explaining a magnet arranged in the aperture device of FIG. 23, FIG. 26 is a drawing for explaining the arrangement of a magnet and a coil in the aperture device according to the present embodiment, and FIG. 27 is a drawing for explaining a coil arranged in the aperture device of FIG. 23.

[0168] Referring to FIG. 20, the aperture device (100) can be disposed on the lens module (10). The aperture device (100) can be disposed on the lens module (10). The aperture device (100) can be coupled to the lens module (10). The aperture device (100) can be fixed to the lens module (10). The aperture device (100) can move integrally with the lens module (10). The aperture device (100) can move together with the lens module (10). The aperture device (100) can move in the optical axis direction together with the lens module (10). The lens module (10) can include a lens barrel and at least one lens disposed within the lens barrel.

[0169] In the description of the aperture device according to another embodiment of the present invention of FIGS. 21 to 27 and the components included in the aperture device according to another embodiment of the present invention, any description that overlaps with the description of the aperture device according to the embodiment of the present invention of FIGS. 1 to 20 will be omitted. The aperture device according to another embodiment of the present invention of FIGS. 21 to 27 and the components included in the aperture device according to another embodiment of the present invention perform the same function as the components included in the aperture device according to the embodiment of the present invention of FIGS. 1 to 20, but there may be some differences in arrangement and shape.

[0170] An aperture device according to another embodiment of the present invention of FIG. 21 may be placed on the top of a lens module (10). An aperture device placed as shown in FIG. 21 may be referred to as an add-on type aperture device. All components included in the aperture device may be placed outside the lens module (10).

[0171] The coil (180) may be arranged on the outside of the housing (140). The magnet (130) may be arranged between the housing (140) and the rotor (110). The coupling between the magnet (130) and the rotor (110) may be variously modified, such as ball coupling, boss-pin, point contact, and surface contact. The magnet (130) and the coil (180) may be arranged to overlap in a direction perpendicular to the optical axis direction. The blade portion (150) may be coupled to each protrusion of the rotor (110) and the housing (140). The yoke (350) arranged under the housing (140) may be arranged to face the rotor (110) and the magnet (130). The yoke (350) may prevent the magnetic force of the magnet (130) from escaping to the outside, thereby maintaining a holding force.

[0172] The aperture device may include a ring-shaped magnet (130). When the magnet (130) is formed in a ring shape, interference between AF driving and OIS driving, which is a problem in existing structures, can be reduced. In addition, since the influence of the magnet (130) can evenly affect the rotational drive of the rotating body (110), tilt due to uneven wear can be improved. As illustrated in Fig. 22(a), the magnet (130) can be magnetized with eight poles. As illustrated in Fig. 22(b), the magnet (130) can be magnetized with six poles.

[0173] The thickness (P) of the magnet (130) in the optical axis direction may be about 0.3 mm to about 1.5 mm. The thickness in the direction perpendicular to the optical axis direction of the magnet (130) may be about 0.3 mm to about 1.5 mm. When the thickness (P) of the magnet (130) in the optical axis direction is about 1.5 mm, the thickness (Q) of the magnet (130) in the direction perpendicular to the optical axis direction may be about 0.3 mm. If the thickness (P) of the magnet (130) in the optical axis direction and the thickness (Q) in the direction perpendicular to the optical axis direction are greater than the upper limit, there is a problem of the aperture device becoming larger, and if they are less than the lower limit, there is a problem of the magnet breaking.

[0174]

[0175] Some of the components included in the aperture device according to another embodiment of the present invention of FIG. 23 may be arranged inside the lens module (10), and the rest may be arranged outside the lens module (10). An aperture device arranged as shown in FIG. 23 may be referred to as an add-in type aperture device. The add-in type aperture device may improve the sensitivity to the lens module (10) by arranging the magnet (130) inside the lens module (10) and arranging the coil (180) outside the lens module (10).

[0176] The coil (180) may be placed outside the lens module (10). The coil (180) may be placed on the shoulder surface of the lens module (10). The magnet (130), the rotating body (110), the housing (140), and the blade portion (150) may be placed inside the lens module (10). The magnet (130) may be placed between the rotating body (110) and the lens module (10). The housing (140) may be placed between the rotating body (110) and the lens module (10). The magnet (130) and the coil (180) may overlap in the optical axis direction.

[0177] The aperture device may include a ring-shaped magnet (130). The magnet (130) may be formed in a plate shape. When the magnet (130) is formed in a ring shape, interference between AF driving and OIS driving, which is a problem in existing structures, can be reduced. In addition, since the influence of the magnet (130) can evenly affect the rotational driving of the rotor (110), tilt due to uneven wear can be improved. As illustrated in Fig. 25(a), the magnet (130) may be magnetized in eight poles. As illustrated in Fig. 25(b), the magnet (130) may be magnetized in six poles.

[0178] The thickness (R) of the magnet (130) in the optical axis direction may be about 0.3 mm to about 1.5 mm. The thickness in the direction perpendicular to the optical axis direction of the magnet (130) may be about 0.3 mm to about 1.5 mm. When the thickness (R) of the magnet (130) in the optical axis direction is about 1.5 mm, the thickness (S) of the magnet (130) in the direction perpendicular to the optical axis direction may be about 0.3 mm. If the thickness (R) of the magnet (130) in the optical axis direction and the thickness (S) in the direction perpendicular to the optical axis direction are greater than the upper limit, there is a problem of the aperture device becoming larger, and if they are less than the lower limit, there is a problem of the magnet breaking.

[0179]

[0180] Referring to FIG. 26, the coil (180) may be formed in a ring shape. The coil (180) may include a hole. The hole of the coil (180) may be arranged to face the boundary surface of the different poles of the magnet (130). When the magnet (130) is formed with 2N polarities alternating, N coils (180) may be arranged. The coil (180) may include a circumferential region and a radial region. The circumferential region of the coil (180) may not face the magnet (130). The radial region of the coil (180) may face the magnet (130). The region where the coil (180) electromagnetically interacts with the magnet (130) may be a radial region. If the circumferential area of ​​the coil (180) faces the magnet (130), the driving force may be weakened.

[0181] Referring to Fig. 27, the number of turns of the coil (180) may be 7 to 10 turns. If it is less than the lower limit of the above range, there is a problem that an appropriate driving force cannot be generated in the ultra-thin aperture device. If it is more than the upper limit of the above range, there is a problem that the resistance increases due to the increase in the number of turns of the coil, thereby increasing power consumption. The thickness (T) of one region of the coil (180) may be about 0.4 mm to about 0.5 mm. This is merely exemplary, and the thickness of the region in the radial direction and the region in the circumferential direction of the coil (180) may be different.

[0182]

[0183] Hereinafter, the configuration of an aperture device according to another embodiment of the present invention will be described with reference to the drawings.

[0184] FIG. 28 is an exploded perspective view of an aperture device according to another embodiment of the present invention, FIG. 29 is a perspective view of a cover of an aperture device according to another embodiment of the present invention, FIG. 30 is a perspective view of a housing of an aperture device according to another embodiment of the present invention, FIG. 31 is a perspective view of a rotating body and a magnet of an aperture device according to another embodiment of the present invention, and FIG. 32 is a perspective view of a blade portion of an aperture device according to another embodiment of the present invention.

[0185] The aperture device (200) may be an aperture. The aperture device (200) can control the amount of light passing through the lens. The aperture device (200) can control the amount of light incident on the image sensor (60). The aperture device (200) can control the size of the hole through which light passes.

[0186] The aperture device (200) can be placed on the lens. The aperture device (200) can be placed on the lens. The aperture device (200) can be coupled to the lens. The aperture device (200) can be fixed to the lens. The aperture device (200) can move integrally with the lens. The aperture device (200) can move together with the lens. The aperture device (200) can move in the optical axis direction together with the lens.

[0187] The aperture device (200) may include a fixed portion. The fixed portion may be a stator. The fixed portion may be a portion that is relatively fixed relative to the movable portion. The fixed portion may movably support the movable portion.

[0188] The aperture device (200) may include a cover (290). The fixed portion may include the cover (290). The cover (290) may be disposed in the housing (240). The cover (290) may be disposed on the housing (240). The cover (290) may accommodate a movable portion therein. Alternatively, the cover (290) may include a top plate and side plates extending from the top plate.

[0189] The cover (290) may have a disc-shaped shape including an opening (295). The cover (290) may include protrusions (293A to 293D) for coupling with the housing (240). The protrusions (293A to 293D) may protrude from the outer surface of the cover (290). The protrusions (293A to 293D) of the cover (290) may be fit-coupled with the coupling grooves (241A to 241D) of the housing (240).

[0190] The cover (290) may include a first hole (292A to 292D) to which the first protrusions (243A to 243D) of the fixed part are engaged. The cover (290) may include a first hole (292A to 292D) to which the first protrusions (243A to 243D) of the housing (240) are engaged. The cover (290) may include a second hole (291A to 291D) to which the second protrusions (211A to 211D) of the moving part are engaged. The first holes (292A to 292D) of the cover (290) may be circular. The second holes (291A to 291D) of the cover (290) may be oval. The size of the first holes (292A to 292D) of the cover (290) may be smaller than the size of the second holes (291A to 291D).

[0191] The cover (290) of the aperture device (200) may be formed integrally with the substrate. The cover (290) may be referred to as the substrate. A coil (280) may be placed on the substrate. The coil (280) may be formed on the substrate. For example, the coil (280) may be formed as a pattern coil (280) on the substrate.

[0192] The cover (290) of the aperture device (200) is formed integrally with the substrate and the coil (280), thereby reducing the thickness of the aperture device (200) in the optical axis direction. In addition, by forming the cover (290), the substrate, and the coil (280) integrally, the thickness of the cover (290) can be appropriately set to the amount of extra thickness secured, thereby ensuring reliability compared to a thinly formed substrate.

[0193] In a variation, the cover (290), the substrate, and the coil (280) may be positioned at different locations. For example, the cover (290) and the substrate may be positioned within the lens barrel, and the coil (280) may be positioned outside the lens barrel.

[0194] The substrate of the aperture device (200) may be electrically connected to the substrate of the lens driving device (300). Through this, the substrate of the aperture device (200) may receive power from the printed circuit board (50) of the camera device (10A). Although not shown in the drawing, the substrate of the aperture device (200) and the substrate (270) of the lens driving device (300) may be directly connected. Alternatively, a separate conductive member may be provided that connects the substrate of the aperture device (200) and the substrate of the lens driving device (300). Alternatively, the substrate of the aperture device (200) may be directly connected to the printed circuit board (50) without being connected to the substrate (270) of the lens driving device (300).

[0195] The aperture device (200) may include a housing (240). The fixed portion may include the housing (240). The housing (240) may be coupled to the cover (290). The housing (240) may accommodate a movable portion. The housing (240) may movably support the movable portion.

[0196] The housing (240) may include an opening (246). The opening (246) of the housing (240) may overlap with the opening (295) of the cover (290) in the optical axis direction. The housing (240) may include an upper plate and a side plate extending in one direction from the upper plate. The housing (240) may accommodate a blade portion (250) and a cover (290) in an internal space formed by the upper plate and the side plate. The side plate of the housing (240) may include a recessed-formed joining groove (241A to 241D). The joining grooves (241A to 241D) of the housing (240) may be fit-joined with the protrusions (293A to 293D) of the cover (290).

[0197] The housing (240) may include first protrusions (243A to 243D). The housing (240) may include first protrusions (243A to 243D) protruding from the upper plate. The first protrusions (243A to 243D) may be coupled with the blade portion (250). The first protrusions (243A to 243D) may be coupled with the third holes (253A to 253D) of the blade portion (250). The first protrusions (243A to 243D) may be coupled with the cover (290). The first protrusions (243A to 243D) may be coupled with the first holes (292A to 292D) of the cover (290).

[0198] The housing (240) may include guide holes (242A to 242D). The guide holes (242A to 242D) of the housing (240) may be coupled with the second protrusions (211A to 211D) of the rotating body (210). When the rotating body (210) is coupled to the lower surface of the upper plate of the housing (240), the second protrusions (211A to 211D) of the rotating body (210) may be exposed to the upper surface of the upper plate of the housing (240) through the guide holes (242A to 242D).

[0199] The guide holes (242A to 242D) may extend along the path along which the second protrusions (211A to 211D) of the rotating body (110) move. The path along which the second protrusions (211A to 211D) move may be curved, and the guide holes (242A to 242D) may include a curved shape or a curved shape. The extension length of the guide holes (242A to 242D) in the direction of movement of the second protrusions (211A to 211D) may be greater than the diameter of the second protrusions (211A to 211D).

[0200] The housing (240) may include protrusions (245A to 245F). The housing (240) may include protrusions (245A to 245F) protruding from the upper plate. The length of the protrusions (245A to 245F) protruding from the upper plate of the housing (240) may be formed to be smaller than the length of the first protrusions (243A to 243D) protruding from the upper plate of the housing (240). The protrusions (245A to 245F) may support the blade portion (250) disposed in the housing (240) to prevent tilting of the blade portion (250). Alternatively, the protrusions (245A to 245F) may serve to guide the movement of the blade portion (250).

[0201]

[0202] The aperture device (200) may include a moving part. The moving part may be a rotor. The moving part may be a movable part. The moving part may be a mover. The moving part may be a mover. The moving part may be a carrier. The moving part may be a rotating body.

[0203] The movable part can be placed on the fixed part. The movable part can be placed on the fixed part. The movable part can be movably placed on the fixed part. The movable part can be rotatably placed on the fixed part. The movable part can be placed on the housing (240). The movable part can be placed on the housing (240). The movable part can be movably placed on the housing (240). The movable part can be placed within the housing (240). The movable part can be placed within the cover (290). The movable part can rotate within the housing (240). The movable part can move the blade part (250). The movable part can move together with the blade part (250).

[0204] The aperture device (200) may include a rotating body (210). The moving part may include the rotating body (210). The rotating body (210) may be placed in a housing (240). The rotating body (210) may be coupled under the housing (240). The rotating body (210) may be formed integrally with the magnet (230). The rotating body (210) may include a first region (212) arranged to face the inner surface of the magnet (230) and a second region (213) arranged to face the outer surface of the magnet (230). The first region (212) and the second region (213) of the rotating body (210) may support the magnet (230).

[0205] The rotating body (210) may include second protrusions (211A to 211D). The second protrusions (211A to 211D) may protrude upwardly through the magnet (230). The second protrusions (211A to 211D) may protrude upwardly from the body of the rotating body (210). The second protrusions (211A to 211D) may be formed on the upper surface of the body of the rotating body (210). The second protrusions (211A to 211D) may be coupled with the blade portion (250). Through this, when the rotating body (210) moves, the blade portion (250) may also move together.

[0206]

[0207] The aperture device (200) may include a driving unit. The driving unit may move the moving unit. The driving unit may move the blade unit (250). The driving unit may move the moving unit through electromagnetic interaction. The driving unit may include a magnet (230) and a coil (280).

[0208] The aperture device (200) may include a magnet (230). The driving unit may include a magnet (230). The magnet (230) may be disposed on the moving unit. The magnet (230) may be disposed on the rotating body (210). The magnet (230) may be coupled to the rotating body (210). The magnet (230) may be fixed to the rotating body (210). The magnet (230) may be bonded to the rotating body (210) with an adhesive.

[0209] The magnet (230) is movable. The magnet (230) can move through interaction with the coil (280). The magnet (230) can move integrally with the moving part. The magnet (230) can move together with the moving part. The magnet (230) may have a ring shape. The magnet (230) may have N and S poles alternately arranged. The magnet (230) may be magnetized in six phases. The magnet (230) may be magnetized in eight poles. The thickness of the magnet (230) in the direction of the optical axis may be reduced to form it into an ultra-thin shape, thereby reducing the thickness of the aperture device (200) in the direction of the optical axis. In addition, the area of ​​the magnet (230) facing the coil (280) may be formed large, thereby increasing the driving force.

[0210] A yoke may be arranged on one side of the magnet (230) or one side of the rotor (210). The yoke may be arranged at a position corresponding to the magnet (230). The yoke may overlap the magnet (230) in the optical axis direction. An attractive force may act between the yoke and the magnet (230). The yoke may be arranged for the purpose of preventing the magnetic force of the magnet (230) from escaping to the outside and maintaining a holding force. Through this, the driving force due to the electromagnetic interaction between the magnet (230) and the coil (280) may be increased.

[0211] The aperture device (200) may include a coil (280). The coil (280) may include a plurality of coils (280: 280A to 280D) that are spaced apart from each other. The driving unit may include the coil (280). The coil (280) may be disposed on the fixing unit. The coil (280) may be disposed on the substrate. The coil (280) may be coupled to the substrate. The coil (280) may be soldered to the substrate. The coil (280) may be electrically connected to the substrate. The coil (280) may be formed integrally with the substrate. The coil (280) may be formed as a pattern coil (280) on the substrate. The coil (280) may be disposed on the housing (240). The coil (280) may be disposed on the housing (240). The coil (280) may be disposed within the cover (290).

[0212] The coil (280) can be positioned corresponding to the magnet (230). The coil (280) can overlap with the magnet (230). The coil (280) can overlap with the magnet (230) in the optical axis direction. The coil (280) can face the magnet (230). The coil (280) can face the magnet (230). The coil (280) can interact with the magnet (230). The coil (280) can electromagnetically interact with the magnet (230). The coil (280) can overlap with the boundary surface of the N pole and the S pole of the magnet (230) in the optical axis direction. The coil (280) can be formed in a ring shape including holes (281A to 281D). The hole of the coil (280) can overlap with the boundary surface of the N pole and S pole of the magnet (230) in the direction of the optical axis.

[0213] When current is applied to the coil (280), the magnet (230) can move due to the interaction between the electromagnetic field of the coil (280) and the electromagnetic field of the magnet (230). The coil (280) can move the magnet (230). The coil (280) can remain relatively fixed when the magnet (230) moves.

[0214] Alternatively, the coil (280) may be placed on the moving part and the magnet (230) may be placed on the fixed part. The coil (280) may move together with the moving part and the magnet (230) may be fixed.

[0215] The aperture device (200) may include a sensor. The driving unit may include the sensor. The sensor may be disposed on the substrate. The sensor may be electrically connected to the substrate. The sensor may detect the magnet (230). The sensor may be a Hall sensor. The sensor may detect the magnetic force of the magnet (230). The sensor may be disposed at a position corresponding to the magnet (230). The sensor may overlap the magnet (230) in the optical axis direction. Control of the blade unit (250) may be fed back in real time through the position of the magnet (230) detected by the sensor. That is, the blade unit (250) may be feedback-controlled in real time by the sensor.

[0216]

[0217] The aperture device (200) may include a blade portion (250). The blade portion (250) may be a member that blocks light. The blade portion (250) may be a light-blocking member. The blade portion (250) may be disposed on a fixed portion. The blade portion (250) may be disposed on a housing (240). The blade portion (250) may be disposed within a cover (290). The blade portion (250) may be disposed on a moving portion. The blade portion (250) may move together with the moving portion. That is, when the moving portion moves, the blade portion (250) may also move together.

[0218] The blade portion (250) may include a first portion coupled to a fixed portion and a second portion coupled to a movable portion. Through this, when the movable portion moves, the blade portion (250) can pivotally move with respect to the fixed portion. The blade portion (250) may include a third hole (253A to 253D) into which a first protrusion (243A to 243D) of the fixed portion is inserted. The blade portion (250) may include a fourth hole (252A to 252D) into which a second protrusion (211A to 211D) of the movable portion is inserted. The third hole (253A to 253D) may be circular. The fourth hole (252A to 252D) may be oval. The size of the third hole (253A to 253D) may be smaller than the size of the fourth hole (252A to 252D).

[0219] The blade portion (250) can rotate and move linearly at the portion where it meets the fixed portion. The blade portion (250) can move linearly at the portion where it meets the moving portion.

[0220] The aperture device (200) may include a blade hole. The blade portion (250) may include a blade hole formed by a plurality of blade portions (250). The blade hole may be changed in size or shape by the plurality of blade portions (250). Light may pass through the blade hole.

[0221] As the second protrusions (211A to 211D) of the rotor (210) move from one side (P) to the other side (Q) of the fourth hole (252A to 252D) of the blade portion (250), the blade hole of the blade portion (250) can change from the minimum size to the maximum size. As the second protrusions (211A to 211D) of the rotor (210) move from one side (P) to the other side (Q) of the fourth hole (252A to 252D) of the blade portion (250), the blade portion (250) can rotate counterclockwise around the first protrusions (243A to 243D) of the housing (240). The blade hole of the blade portion (250) can be referred to as an opening of the blade portion (250).

[0222] For example, when the second protrusions (211A to 211D) of the rotating body (210) are positioned on one side (P) of the fourth hole (252A to 252D) of the blade portion (250), the size of the blade hole may be the minimum size. When the second protrusions (211A to 211D) of the rotating body (210) are positioned on the other side (Q) of the fourth hole (252A to 252D) of the blade portion (250), the size of the blade hole may be the maximum size.

[0223] According to a modified example, the second protrusion (211A to 211D) of the rotor (210) can move from a state closest to one side (P) of the fourth hole (252A to 252D) of the blade portion (250) to a state closest to the other side (Q).

[0224] The blade portion (250) may include a plurality of blades (251A to 251D). The blade portion (250) may include 4 to 12 blades. The blade portion (250) may include 4 blades. The blade portion (250) may include 6 blades. In this case, the 6 blade portions (250) may be arranged in 2 layers of 3 blades each. The plurality of blades (251A to 251D) may form a blade hole whose size changes according to the movement of the moving portion. The blade hole may be formed by the inner peripheral surface of the plurality of blades (251A to 251D).

[0225]

[0226] Below, the configuration of the camera device according to the present embodiment is described with reference to the drawings.

[0227] Fig. 33 is a perspective view of a camera device according to the present embodiment.

[0228] The camera device (10) may include a lens module. The lens module may include at least one lens. The lens may be positioned corresponding to the image sensor (60). The lens module may include a lens and a lens barrel. The lens module may be coupled to a holder of the lens driving device (20). The lens module may be coupled to the holder by screws and / or adhesive. The lens module may be moved integrally with the holder.

[0229] The camera device (10) may include a filter (30). The filter (30) may block light of a specific frequency band from passing through the lens module from being incident on the image sensor (60). The filter (30) may be arranged parallel to the xy plane. The filter (30) may be arranged between the lens module and the image sensor (60). The filter (30) may be arranged on the sensor base (40). Alternatively, the filter (30) may be arranged on the base of the lens driving device (20). The filter (30) may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor (60).

[0230] The camera device (10) may include a sensor base (40). The sensor base (40) may be disposed between the lens driving device (20) and the printed circuit board (50). The sensor base (40) may include a protrusion (41) on which a filter (30) is disposed. An opening may be formed in a portion of the sensor base (40) on which the filter (30) is disposed so that light passing through the filter (30) may be incident on the image sensor (60).

[0231] The camera device (10) may include a printed circuit board (PCB) (50). The printed circuit board (50) may be a substrate or a circuit board. A lens driving device (20) may be disposed on the printed circuit board (50). A sensor base (40) may be disposed between the printed circuit board (50) and the lens driving device (20). The printed circuit board (50) may be electrically connected to the lens driving device (20). An image sensor (60) may be disposed on the printed circuit board (50). Various circuits, elements, control units, etc. may be provided on the printed circuit board (50) to convert an image formed on the image sensor (60) into an electrical signal and transmit it to an external device.

[0232] The camera device (10) may include an image sensor (60). The image sensor (60) may be configured to form an image by incident light passing through a lens and a filter (30). The image sensor (60) may be mounted on a printed circuit board (50). The image sensor (60) may be electrically connected to the printed circuit board (50). For example, the image sensor (60) may be coupled to the printed circuit board (50) using surface mounting technology (SMT). As another example, the image sensor (60) may be coupled to the printed circuit board (50) using flip chip technology.

[0233] The image sensor (60) can be arranged so that its optical axis is aligned with that of the lens. That is, the optical axis of the image sensor (60) and the optical axis of the lens can be aligned. The image sensor (60) can convert light irradiated to the effective image area of ​​the image sensor (60) into an electrical signal. The image sensor (60) can be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0234] The camera device (10) may include a motion sensor (70). The motion sensor (70) may be mounted on a printed circuit board (50). The motion sensor (70) may be electrically connected to a control unit (80) through a circuit pattern provided on the printed circuit board (50). The motion sensor (70) may output rotational angular velocity information due to the movement of the camera device (10). The motion sensor (70) may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0235] The camera device (10) may include a control unit (80). The control unit (80) may be disposed on a printed circuit board (50). The control unit (80) may be electrically connected to a coil of a lens driving device (20). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the coil. The control unit (80) may control the lens driving device (20) to perform an autofocus function and / or a shake correction function. Furthermore, the control unit (80) may perform autofocus feedback control and / or shake correction feedback control for the lens driving device (20).

[0236] The camera device (10) may include a connector (90). The connector (90) may be electrically connected to a printed circuit board (50). The connector (90) may include a port for electrically connecting to an external device.

[0237]

[0238] Below, the configuration of the optical device according to the present embodiment is described with reference to the drawings.

[0239] Fig. 34 is a perspective view of an optical device according to the present embodiment.

[0240] The optical device (1) may include one or more of a mobile phone, a cell phone, a portable terminal, a mobile terminal, a smart phone, a smart pad, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation device. The optical device (1) may include any device for taking images or photographs.

[0241] An optical device (1) may include a main body (2). The optical device (1) may include a camera device (10). The camera device (10) may be disposed on the main body (2). The camera device (10) may photograph a subject. The optical device (1) may include a display. The display may be disposed on the main body (2). The display may output one or more of a video or image captured by the camera device (10). The display may be disposed on a first surface of the main body (2). The camera device (10) may be disposed on one or more of the first surface of the main body (2) and a second surface opposite the first surface. The camera device (10) may have a triple camera disposed in a vertical direction. Alternatively, the camera device (10) may have a triple camera disposed in a horizontal direction.

[0242] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. Fixed government; A moving part arranged on the above fixed part; A magnet and coil that move the above moving part; and It includes a blade part that forms a hole whose size changes according to the movement of the moving part, The above magnet is formed in a ring shape with alternating N and S poles, The above coil is formed in a ring shape including a hole, An aperture device in which the holes of the above coil are arranged to face the interfaces of the different poles of the above magnet.

2. In paragraph 1, The above coil includes a circumferential area and a radial area, The circumferential region of the above coil does not face the magnet, The radial area of ​​the above coil is an aperture device facing the above magnet.

3. In paragraph 1, The above fixed part includes a first protrusion that engages with the first hole of the blade part, The above moving part includes a second protrusion that engages with the second hole of the blade part, An aperture device in which the size of the first hole is smaller than the size of the second hole.

4. In paragraph 1, The above moving part includes a rotating body, The above magnet is arranged on one surface of the above rotating body, An aperture device in which a first reinforcing member is arranged on the other surface of the above-mentioned rotating body.

5. In paragraph 1, The above fixed part includes a housing, Including a substrate disposed on the housing, The above coil is an aperture device formed as a pattern coil on the above substrate.

6. In paragraph 5, A second reinforcing member is arranged on one side of the above housing, An aperture device in which a third reinforcing member is placed between the other surface of the housing and the substrate.

7. Printed circuit board; An image sensor disposed on the above printed circuit board; a lens disposed on the image sensor; and A camera device comprising an aperture device according to any one of claims 1 to 6 arranged on the lens.

8. Body; The camera device of claim 7 arranged in the above body; and An optical device comprising a display disposed on the main body and outputting at least one of images and videos captured by the camera device.

9. A lens module including a lens barrel and a lens unit; and A fixed part arranged inside the lens barrel; A moving part arranged on the above fixed part; A magnet placed on the above moving part; a coil disposed outside the lens barrel; and A camera module comprising a plurality of blades forming a hole whose size changes according to the movement of the moving part.

10. In paragraph 9, The above magnet is formed in a ring shape with alternating N and S poles, The above coil is formed in a ring shape including a hole, A camera module in which the holes of the coil are arranged to overlap with the interfaces of different poles of the magnet in the direction of the optical axis.

Images