Aperture module, and camera device and optical instrument comprising same

Abstract

An embodiment comprises: a base; a rotor disposed on the base; a ball member disposed between the base and the rotor; a magnet disposed on the rotor; a coil which is disposed on the base so as to face the magnet, and which rotates the rotor by means of interaction with the magnet; a blade part which is connected to the rotor and which has an opening that varies in size by means of the rotation of the rotor; and a first sensor and a second sensor for sensing the displacement of the rotor, wherein the magnet includes a curved surface protruding in the direction toward the coil, and the first sensor and the second sensor face the protruding curved surface of the magnet.

Description

Aperture module and camera device and optical device including the same

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

[0002] Camera devices are devices that capture images or videos of subjects, and are installed on portable devices, drones, vehicles, and other devices. To enhance image quality, camera devices may have image stabilization (IS) functions, such as optical image stabilizers (OIS) and autofocusing (AF), which compensate for or prevent image blurring caused by the user's movements. Camera devices require a configuration capable of adjusting the amount of incident light to suit the surrounding environment or shooting conditions.

[0003] The embodiment provides an aperture module capable of accurately detecting displacement of a rotor and improving the sensing sensitivity of a position sensor, and a camera device and optical device including the same.

[0004] An aperture module according to an embodiment comprises: a base; a rotor disposed on the base; a ball member disposed between the base and the rotor; a magnet disposed on the rotor; a coil disposed on the base to face the magnet and rotating the rotor by interaction with the magnet; a blade portion connected to the rotor and having an opening whose size varies by rotation of the rotor; and a first sensor and a second sensor for detecting displacement of the rotor, wherein the magnet includes a convex surface in a direction toward the coil, and the first sensor and the second sensor face the convex surface of the magnet.

[0005] The first sensor includes a first end and a second end positioned opposite to each other in a direction perpendicular to the direction in which the coil and the magnet face each other, the second sensor is positioned closer to the second end of the first sensor than to the first end of the first sensor, and a distance between the first end of the first sensor and the curved surface of the magnet may be greater than a distance between the second end of the first sensor and the curved surface of the magnet.

[0006] The separation distance between the first sensor and the second sensor may be greater than the distance between the first end of the first sensor and the curved surface of the magnet. The separation distance between the first sensor and the second sensor may be greater than the separation distance between the coil and the first sensor and the separation distance between the coil and the second sensor.

[0007] The above aperture module includes a circuit board arranged on the base, and the first sensor and the second sensor can be arranged on a first surface of the circuit board facing the magnet.

[0008] Each of the first sensor and the second sensor is a Hall sensor including two input terminals and two output terminals, and the output terminals of each of the first sensor and the second sensor can be connected in series.

[0009] The second sensor includes a first end and a second end positioned opposite to each other in a direction perpendicular to the direction in which the coil and the magnet face each other, and the first sensor is positioned closer to the second end of the second sensor than to the first end of the second sensor, and a distance between the first end of the second sensor and the curved surface of the magnet may be greater than a distance between the second end of the second sensor and the curved surface of the magnet. A separation distance between the first sensor and the second sensor may be greater than a distance between the first end of the second sensor and the curved surface of the magnet.

[0010] The coil may include a hollow portion, and the first sensor and the second sensor may be disposed within the hollow portion of the coil. The magnet may include a first magnet portion, a second magnet portion, and a partition wall positioned between the first magnet portion and the second magnet portion. At a central position of the rotor where the partition wall is aligned at an intermediate position between the first sensor and the second sensor, a distance between an imaginary line connecting a surface of the first sensor facing the magnet and a surface of the second sensor facing the magnet and the partition wall may be smaller than a distance between the imaginary line and the first magnet portion.

[0011] The distance between the above virtual line and the bulkhead may be smaller than the distance between the above virtual line and the second magnet portion.

[0012] The rotor includes a body disposed on the base and an extension extending downward from the body, and the magnet can be disposed in the extension of the rotor.

[0013] According to another embodiment, an aperture module comprises: a base; a rotor disposed on the base; a ball member disposed between the base and the rotor; a magnet disposed on the rotor and including a first magnet portion, a second magnet portion, and a partition wall disposed between the first magnet portion and the second magnet portion; a circuit board disposed on the base; a coil disposed on the circuit board so as to face the magnet and rotating the rotor by interaction with the magnet; a blade portion connected to the rotor and having an opening whose size is variable by rotation of the rotor; And a first sensor and a second sensor are disposed within the hollow of the coil and configured to detect displacement of the rotor, wherein a distance between a virtual line and the partition wall gradually increases as the rotor rotates clockwise or counterclockwise based on a central position of the rotor, the virtual line is a straight line connecting a front surface of the first sensor facing the magnet and a front surface of the second sensor facing the magnet, and the partition wall is positioned at the central position of the rotor to correspond to an intermediate position between the first sensor and the second sensor.

[0014] The magnet includes a convex curved surface facing the coil, and the first sensor and the second sensor can overlap the curved surface of the magnet in a direction in which the magnet and the coil face each other.

[0015] In an embodiment, the first sensor and the second sensor are spaced apart from each other so as to face the convex curved surface of the magnet unit, thereby improving the linearity of the graph between the displacement of the rotor and the outputs of the first and second sensors within the rotational range of the rotor.

[0016] In addition, in the embodiment, since the linearity of the output of the position sensor is improved, the displacement or position of the rotor (or blade portion) can be accurately detected, and the sensing sensitivity of the position sensor can be improved.

[0017] In the embodiment, the rotor and the base are arranged vertically and a cloud member is arranged between the rotor and the base, so that the assembly between the rotor and the base can be simplified and the assembly deviation can be reduced.

[0018] In an embodiment, a groove is provided in the extension of the rotor, and a protrusion of the base corresponding to the groove can serve as a stopper to mechanically stop the rotor.

[0019] In the embodiment, the rotation range of the rotor can be increased by the groove of the extension portion, and the range of change in the size of the opening of the blade portion can be increased.

[0020] In the embodiment, the coil and magnet are arranged to oppose each other in a direction perpendicular to the optical axis, so that the size of the aperture module can be reduced in the direction of the optical axis.

[0021] Additionally, in the embodiment, since the coil and magnet are arranged to overlap with the upper and middle portions of the lens barrel in a direction perpendicular to the optical axis and not to overlap with the upper portion in the direction of the optical axis, it is possible to prevent the size of the camera device from increasing in the direction perpendicular to the optical axis.

[0022] In the embodiment, the rotor can be stably adhered to the cloud member when the rotor rotates, so that the opening of the blade part can be stably changed.

[0023] In an embodiment, the center of the aperture of the aperture module can be prevented from being misaligned with respect to the center of the lens unit (or optical axis), and the occurrence of eccentricity between the center of the lens unit (or optical axis) and the center of the aperture of the aperture module can be suppressed.

[0024] In the embodiment, since the length of the magnetic body is greater than the length of the magnet, the rotor can be stably supported.

[0025] In addition, in the embodiment, spatial interference between the magnetic body and the coil can be avoided, the length of the magnetic body can be designed to be long, and the attractive force or holding force between the magnetic body and the magnet can be increased.

[0026] Figure 1 is a perspective view of an aperture module according to an embodiment.

[0027] Figure 2a is a first exploded perspective view of the aperture module of Figure 1.

[0028] Figure 2b is a second separated perspective view of the aperture module of Figure 1.

[0029] This is a lower perspective view of the cover member of Fig. 3.

[0030] Figure 4a is an exploded perspective view of the blade portion, support plate, rotor, and magnet.

[0031] Figure 4b is a perspective view of the rotor.

[0032] Figure 4c is a bottom perspective view of the rotor.

[0033] Figure 5a is a first perspective view of the rotor, magnet, and support plate.

[0034] Figure 5b is a second perspective view of the rotor, magnet, and support plate.

[0035] Figure 6a is a perspective view of the base and the magnet.

[0036] Figure 6b is an exploded perspective view of the circuit board, coil, and reinforcing member.

[0037] A first combined perspective view of the components that are coupled to the circuit board and rotor of FIG. 7a.

[0038] A second combined perspective view of the components that are coupled to the circuit board and rotor of FIG. 7b.

[0039] Figure 8a is a first perspective view of the components and cloud member of Figure 7a.

[0040] Figure 8b is a second perspective view of the components and cloud member of Figure 7a.

[0041] Figure 8c is a third perspective view of the configurations and cloud member of Figure 7a.

[0042] Figure 8d is an enlarged view of the ball member and the receiving portion of the rotor.

[0043] Fig. 9 shows a rotor mounting portion according to another embodiment.

[0044] Figure 10a is a combination diagram of the components of Figure 8a and the rotor.

[0045] Figure 10b is a combination diagram of the configuration of Figure 10a and the support plate.

[0046] Figure 11a is a perspective view of the aperture module with the cover member removed.

[0047] Figure 11b shows a closed shape of the opening of the blade portion of Figure 11a.

[0048] Figure 11c is a bottom perspective view of the aperture module of Figure 11a.

[0049] Fig. 12a is a cross-sectional view of the aperture module in the AB direction of Fig. 11a.

[0050] Fig. 12b is a cross-sectional view of the aperture module in the CD direction of Fig. 11a.

[0051] Figure 12c is an enlarged view of the dotted line portion of Figure 12b.

[0052] Fig. 12d is a cross-sectional view of the aperture module in the EF direction of Fig. 11a.

[0053] Figure 12e is a cross-sectional view of the rotor, coil, circuit board, reinforcing member, and yoke portion.

[0054] Figure 13a is a perspective view of the aperture module and lens module separated.

[0055] Figure 13b is a combined diagram of the aperture module and lens module of Figure 13a.

[0056] Figure 13c is a cross-sectional view of the aperture module and lens module of Figure 13b.

[0057] Figure 14a shows a magnetic body placed on a base.

[0058] Figure 14b shows a bottom view of Figure 14a.

[0059] Figure 14c is a bottom view of the rotor, magnet, magnetic body, and cloud member.

[0060] Figure 15a is a first perspective view of the rotor, magnet, and magnetic body.

[0061] Figure 15b is a second perspective view of the rotor, magnet, and magnetic body.

[0062] Figure 16 is a cross-sectional view of the rotor, magnet, base, and magnetic bodies.

[0063] Figure 17 shows the arrangement of the first magnet unit, the first coil unit, and the first and second sensors of the position sensor.

[0064] Figure 18 shows the separation distance between the first sensor and the second sensor.

[0065] Fig. 19a shows the first position of the rotor rotated to the maximum in the counterclockwise direction.

[0066] Figure 19b shows the second position of the rotor rotated to its maximum in the clockwise direction.

[0067] Figure 20 shows the correlation between the position of the rotor and the output of the position sensor.

[0068] Fig. 21 is a perspective view of a camera device according to an embodiment.

[0069] Figure 22a shows a perspective view of an optical device according to an embodiment.

[0070] FIG. 22b shows a perspective view of an optical device according to another embodiment.

[0071] Figure 23 shows a schematic diagram of the optical device illustrated in Figures 22a and 22b.

[0072] Hereinafter, embodiments of the present invention that can specifically achieve the above purpose will be described with reference to the attached drawings.

[0073] In the description of the embodiments, when it is described that each element is formed "on or under", "on or under" includes both cases where two elements are in direct contact with each other or where one or more other elements are formed by being disposed indirectly between the two elements. In addition, when it is expressed as "on or under", it can include the meaning of not only the upward direction but also the downward direction based on one element.

[0074] Additionally, relational terms such as “first” and “second,” “upper / upper / lower,” and “lower / lower / below” used hereinafter may be used only to distinguish one entity or element from another entity or element, without necessarily requiring or implying any physical or logical relationship or order between such entities or elements. In addition, the same reference numbers represent the same elements throughout the description of the drawings.

[0075] Furthermore, terms such as "include," "comprise," or "have" described above, unless specifically stated otherwise, imply that the corresponding component may be included, and thus should be interpreted to include other components rather than excluding other components. Furthermore, terms such as "corresponding" described above may include at least one of the meanings of "opposite" or "overlapping."

[0076] Hereinafter, a camera device according to an embodiment and an optical device including the same will be described with reference to the attached drawings. For convenience of explanation, the camera device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using another coordinate system, and the embodiment is not limited thereto. In each drawing, the X-axis and the Y-axis may be axes in a direction perpendicular to the Z-axis, which is the optical axis direction (OA).

[0077] Additionally, the Z-axis direction, which is the optical axis direction, can be defined as 'any one of the first to third directions', the X-axis direction can be defined as 'another one of the first to third directions', and the Y-axis direction can be defined as 'the remaining one of the first to third directions'. For example, the first direction can be a direction perpendicular to the imaging area of ​​the image sensor.

[0078] Also, the X-axis (or Y-axis) may be referred to as a "first horizontal axis", the X-axis (or Y-axis) direction may be defined as a "first horizontal direction", the Y-axis (or X-axis) may be defined as a "second horizontal axis", and the Y-axis (or X-axis) direction may be defined as a "second horizontal direction". For example, the optical axis direction may be the direction of the optical axis or a direction parallel to the optical axis. Also, for example, the optical axis may be the optical axis of a lens mounted on a lens barrel. Or, for example, the optical axis may be an axis that is perpendicular to the imaging area of ​​the image sensor and passes through the center of the imaging area. Also, the expression "terminal" hereinafter may be expressed by replacing it with a pad, an electrode, or a conductive layer.

[0079] In addition, in the embodiment, in the coupling between the protrusion and the hole for coupling two components to each other, one of the components may be a coupling protrusion (or coupling hole), and the other side may be a corresponding coupling hole (or coupling protrusion).

[0080] A camera device according to an embodiment may perform a shake correction function and / or an auto-focusing function. The 'shake correction function' may be a function of moving a lens in a direction perpendicular to the optical axis direction or tilting the lens with respect to the optical axis to offset vibration (or movement) caused by the user's shaking hand. In addition, the 'auto-focusing function' may be a function of automatically adjusting the focus on a subject by moving the lens in the optical axis direction according to the distance of the subject to obtain a clear image of the subject on the image sensor. Hereinafter, the "camera device" may be expressed as a "camera", an "actuator", a "camera module", a "camera", or a "photographer".

[0081] FIG. 1 is a perspective view of an aperture module (100) according to an embodiment, FIG. 2a is a first separated perspective view of the aperture module (100) of FIG. 1, FIG. 2b is a second separated perspective view of the aperture module (100) of FIG. 1, and a lower perspective view of a cover member (300) of FIG. 3, FIG. 4a is an separated perspective view of a blade portion (150), a support plate (160), a rotor (110), and a magnet (130), FIG. 4b is a perspective view of the rotor (110), and FIG. 4c is a bottom perspective view of the rotor (110), FIG. 5a is a first perspective view of the rotor (110), a magnet (130), and a support plate (160), and FIG. 5b is a second perspective view of the rotor (110), a magnet (130), and a support plate (160), and FIG. 6a is a perspective view of a base (140) and a magnetic body (86), FIG. 6b is an exploded perspective view of a circuit board (190), a coil (120), and a reinforcing member (70), a first combined perspective view of components coupled with the circuit board (190) and the rotor (110) of FIG. 7a, a second combined perspective view of components coupled with the circuit board (190) and the rotor (110) of FIG. 7b, FIG. 8a is a first perspective view of components and a cloud member (40) of FIG. 7a, FIG. 8b is a second perspective view of components and a cloud member (40) of FIG. 7a, FIG. 8c is a third perspective view of components and a cloud member (40) of FIG. 7a, FIG. 8d is an enlarged view of a ball member (B1) and a receiving portion (33A) of the rotor (110), and FIG. 9 is a view according to another embodiment. The mounting portion (23A to 23D) of the rotor (110) is shown, and FIG. 10a is a combination diagram of the components of FIG. 8a and the rotor (110), FIG. 10b is a combination diagram of the components of FIG. 10a and the support plate (160), FIG. 11a is a perspective view of the aperture module (100) with the cover member (300) removed, FIG. 11b shows a closed shape of the opening of the blade portion (150) of FIG. 11a, FIG. 11c is a lower perspective view of the aperture module (100) of FIG. 11a, and FIG. 12a is a cross-sectional view of the aperture module (100) in the AB direction of FIG. 11a,FIG. 12b is a cross-sectional view of the aperture module (100) taken along the CD direction of FIG. 11a, FIG. 12c is an enlarged view of the dotted line portion of FIG. 12b, FIG. 12d is a cross-sectional view of the aperture module (100) taken along the EF direction of FIG. 11a, FIG. 12e is a cross-sectional view of the rotor (110), the coil (120), the circuit board (190), the reinforcing member (70), and the magnetic body (95), FIG. 13a is an exploded perspective view of the aperture module (100) and the lens module (400), FIG. 13b is a combined view of the aperture module (100) and the lens module (400) of FIG. 13a, and FIG. 13c is a cross-sectional view of the aperture module (100) and the lens module (400) of FIG. 13b.

[0082] Referring to FIGS. 1 to 13c, the aperture module (100) can adjust or change the amount of light incident on the camera device (200). For example, the aperture module (100) can be placed on the lens module (400) of the camera device (200).

[0083] The aperture module (100) may include a blade portion (150) for controlling the amount of incident light and a position sensor (170) for detecting the displacement or position of the blade portion (150). 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 module (100) may include an incident hole implemented with different sizes that may be changed in multiple stages or continuously, and light may be incident through the incident hole (or opening).

[0084] The aperture module (100) may include a base (140), a blade portion (150), a rotor (110), and a position sensor (170). The aperture module (100) may further include a cloud member (40) disposed between the base (140) and the rotor (110). The aperture module (100) may further include a driving unit that moves or rotates the rotor (110).

[0085] The rotor (110) may be placed on a base (140). The cloud member (40) may support the rotor (110) with respect to the base (140). For example, the cloud member (40) may be placed between the lower portion of the body (110A) of the rotor (110) and the upper portion of the base (140).

[0086] At least a portion (or a first portion) of the blade portion (150) may be connected or coupled to the base (140). At least another portion (or a second portion) of the blade portion (150) may be connected or coupled to the rotor (110). The blade portion (150) may move or rotate as the rotor (110) moves or rotates.

[0087] The driving unit may include a coil (120) and a magnet (130). The rotor (110) may move or rotate by the interaction between the coil (120) and the magnet (130). Either one of the coil (120) and the magnet (130) may be placed, coupled, or fixed to the base (140), and the other one of the coil (120) and the magnet (130) may be placed, coupled, or fixed to the rotor (110).

[0088] The aperture module (100) may include a cover member (300) for accommodating the rotor (110). The cover member (300) may be alternatively referred to as a “cover.” The cover member (300) may be placed on the rotor (110) and coupled to the base (140).

[0089] Referring to FIGS. 2A, 2B, and 3, the cover member (300) may be in the form of a box with an open bottom. 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). For example, the side plate (302) may extend downward from the upper plate (302).

[0090] The cover member (300) may include an opening (303) formed in the top plate (301). The opening (302) may be a hole or hollow that penetrates the top plate (301) in the first direction (OA). The shape of the top plate (301) may be circular, but in other embodiments, the top plate (301) may have a polygonal shape, such as a square or a pentagon. In addition, the shape of the side plate (302) may be circular, but in other embodiments, the side plate (301) may have a polygonal shape, such as a square or a pentagon.

[0091] The cover member (300) may include a groove (305) formed on the lower surface of the upper plate (301). The groove (305) may be an escape groove to avoid spatial interference with at least one of the drive shaft (51) of the rotor (110) and the fixed shaft (71) of the base (140) described later. For example, the groove (305) may be in a recessed shape from the lower surface of the upper plate (301).

[0092] Referring to FIGS. 3, 12A and 12B, the groove (305) of the cover member (300) may include a groove (305A) corresponding to, opposite to, or overlapping with the fixed shaft (71) of the base (140) in the first direction. In addition, the groove (305) of the cover member (300) may include a groove (305B) corresponding to, opposite to, or overlapping with the drive shaft (51) of the rotor (110) in the first direction.

[0093] The groove (305A) may have a shape corresponding to the fixed shaft (71), for example, a circular shape. At least a portion (e.g., an upper portion) of the fixed shaft (71) may be disposed within the groove (305A). For example, at least a portion (e.g., an upper portion) of the fixed shaft (71) may overlap the groove (305A) in a direction perpendicular to the first direction. For example, at least a portion (e.g., an upper portion) of the fixed shaft (71) may be in contact with the groove (305A). In other embodiments, for example, at least a portion (e.g., an upper portion) of the fixed shaft (71) may be spaced apart from the groove (305A).

[0094] The groove (305B) may extend along the path along which the drive shaft (51) of the rotor (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 drive shaft (51) of the rotor (110). The path along which the drive shaft (51) moves may be curved, and the groove (305B) may have a curved shape or a curved shape. In another embodiment, the groove (305B) may be straight. The extension length of the groove (305B) in the direction of movement of the drive shaft (51) may be greater than the diameter of the drive shaft (51).

[0095] At least a portion (e.g., an upper portion) of the drive shaft (51) may be positioned within the groove (305B). For example, at least a portion (e.g., an upper portion) of the drive shaft (51) may overlap the groove (305B) in a direction perpendicular to the first direction. For example, at least a portion (e.g., an upper portion) of the drive shaft (51) may be spaced apart from the groove (305B). For example, for example, an upper surface of the drive shaft (51) may be spaced apart from a bottom surface of the groove (305B). This is because the drive shaft (51) must move.

[0096] The home (305A) may include a plurality of grooves (58A to 58F) corresponding to the fixed axis (71) of the base (140). The plurality of grooves (58A to 58F) may be spaced apart from each other around the opening (303) of the upper plate (301).

[0097] The groove (305B) may include a plurality of grooves (59A to 59F) corresponding to the drive shaft (51) of the rotor (110). The plurality of grooves (59A to 59F) may be spaced apart from each other and arranged around the opening (303) of the upper plate (301). For example, a pair of grooves (e.g., 58A) and grooves (e.g., 59A) corresponding to each other may be arranged adjacent to each other. In this case, a pair of grooves (e.g., 58A) and grooves (e.g., 59A) may correspond to a pair of fixed shafts (e.g., 71A) and drive shafts (e.g., 51A) that are coupled to one blade (e.g., 150A).

[0098] Referring to FIGS. 6A, 13A, and 13B, the side plate (302) can be coupled with the base (140). The base (140) can include at least one protrusion (45) disposed on the outer circumferential surface (or outer surface) of the base (140). In the first direction, the protrusion (45) of the base (140) can face or overlap the side plate (302), and the lower end or bottom surface of the side plate (302) can be coupled with the protrusion (45) of the base (140).

[0099] The lower surface of the side plate (302) may include a first surface and a second surface having a step in the first direction. For example, the second surface of the lower surface of the side plate (302) may be positioned lower than the first surface of the lower surface of the side plate (302). The protrusion (45) of the base (140) may include a first surface and a second surface having a step in the first direction. The first surface of the protrusion (45) of the base (140) may be positioned higher than the second surface of the protrusion (45) of the base (140). The first surface of the lower surface of the side plate (302) may face or overlap with the first surface of the protrusion (45) of the base (140) in the first direction. The first surface of the lower surface of the side plate (302) may be coupled with the first surface of the protrusion (45) of the base (140). The second surface of the lower surface of the side plate (302) may face or overlap with the second surface of the protrusion (45) of the base (140) in the first direction. The second surface of the lower surface of the side plate (302) may be joined with the second surface of the protrusion (45) of the base (140). This can improve the bonding strength between the side plate (302) and the base (140), and can prevent the side plate (302) from being twisted or detached due to impact.

[0100] For example, at least one protrusion (45) may protrude from the inner peripheral surface of the base (140) in a direction toward the outer peripheral surface. The at least one protrusion (45) may face or overlap the side plate (302) of the cover member (300) in the first direction. The protrusion (45) may be arranged on the upper or upper side of the outer peripheral surface (or outer surface) of the base (140). For example, the protrusion (45) may be arranged closer to the upper surface of the base (140) than to the lower surface of the base (140). The base (140) may include a plurality of protrusions (45) arranged to be spaced apart from each other in the circumferential direction of the base (140). The protrusion (45) may be coupled to the lower surface of the side plate (302).

[0101] The side plate (302) may include at least one protrusion (304A) protruding from the lower surface of the side plate (302). For example, the side plate (302) may include a plurality of protrusions (304A) protruding from the lower surface of the side plate (302) and spaced apart from each other. The side plate (302) may include at least one recessed portion (304B) positioned between the plurality of protrusions (304A). For example, the bottom surface of the recessed portion (304B) may be the lower surface of the side plate (302).

[0102] The protrusion (45) of the base (140) may include a first protrusion (45A) and a second protrusion (45B) having a step in the first direction. The second protrusion (45B) may be positioned lower than the first protrusion (45A). For example, the upper surface (or “first surface”) of the first protrusion (45A) and the upper surface (or “second surface”) of the second protrusion (45B) may have a step in the first direction. The upper surface (or “second surface”) of the second protrusion (45B) may be positioned lower than the upper surface (or “first surface”) of the first protrusion (45A). The protrusion (304A) of the side plate (302) may correspond to, face, or overlap with the second protrusion (45B) of the base (140) in the first direction, and may be coupled with the second protrusion (45B). Additionally, the recessed portion (305B) of the side plate (302) may correspond to, face, or overlap with the first protrusion (45A) of the base (140), and may be combined with the first protrusion (45A).

[0103] Referring to FIGS. 4A, 4B, 5A, and 5B, the blade portion (150) may be positioned within the cover member (300). The blade portion (150) may include an opening (201) corresponding to, opposite to, or overlapping with the opening (303) of the cover member (300).

[0104] The blade portion (150) can adjust the size of the opening (201) through which light is incident. The opening (201) of the blade portion (150) can correspond to or face the opening (205) of the support plate (160) in the first direction (OA). At least a portion of the opening (201) of the blade portion (150) can overlap with the opening (205) of the support plate (160) in the first direction (OA).

[0105] The blade section (150) may include a plurality of blades (150A to 150F). In FIG. 4A, the number of blades may be six, but in other embodiments, the number of blades may be two to five, or seven or more.

[0106] A plurality of blades (150A to 150F) can form an opening (201). For example, each of the plurality of blades (150A to 150F) can be arranged so that at least a portion of the blades overlap in the first direction, thereby forming an opening (301).

[0107] The blade portion (150) may include a plurality of layers, and each layer may include a plurality of blades. For example, each layer of the blade portion (150) may include three blades. For example, some (150A, 150C, 150E) of the plurality of blades (150A to 150F) may be disposed on other remaining parts (150B, 150D, 150F) of the plurality of blades (150A to 150F). For example, the blade portion (150) may include a first layer and a second layer disposed on the first layer, and the first layer may include three blades (150B, 150D, 150F), and the second layer may include three blades (150A, 150C, 150E). In another embodiment, the number of blades in each layer may be two or more.

[0108] For example, a plurality of blades (150A to 150F) 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 of the opening (101, see FIG. 12d), and the opening may be an opening (303) of the cover member (300), an opening of the blade portion (150), an opening (301) of the support plate (160), an opening (401) of the rotor (110), or an opening (501) of the base (140).

[0109] Any one blade (e.g., 150A) may be arranged to overlap with another adjacent or adjacent blade (e.g., 150B or 150D) in the first direction.

[0110] For example, the plurality of blades (150A to 150F) may be arranged alternately upward or downward in a clockwise or counterclockwise direction. In another embodiment, the plurality of blades (150A to 150F) may be sequentially stacked upward or downward in a clockwise or counterclockwise direction.

[0111] For example, at least a portion of the inner surface of each of the blades (150A to 150F) may include a folded or curved portion. For example, the inner surface of each of the blades (150A to 150F) may include a curved or concave portion. For example, the curved or concave portion of each of the blades (150A to 150F) may be arranged in a round shape toward the optical axis. The shape of the opening (301) 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).

[0112] At least a portion of the blade portion (150) may be coupled to the base (140), and at least another portion of the blade portion (150) may be coupled to the rotor (110). For example, the blade portion (150) may include a first portion coupled to the base (140) and a second portion coupled to the rotor (110). For example, the blade portion (150) may be rotatable about the first portion of the blade portion (150) as an axis, and the second portion of the blade portion (150) may move or rotate in conjunction with the rotor (110).

[0113] The blade portion (150) may include a hole (41) for coupling with a fixed shaft (71) of the base (140). For example, the hole (41) of the blade portion (150) may be fitted or inserted into the fixed shaft (71) of the base (140) so that the blade portion (150) can rotate. The blade portion (150) may include a hole (3) for coupling with a drive shaft (51) of the rotor (110). For example, the hole (3) of the blade portion (150) may be fitted or inserted into the drive shaft (71) of the rotor (110) so that the blade portion (150) can rotate and move.

[0114] In a state where the hole (41) of the blade portion (150) is fitted into the fixed shaft (71), the blade portion (150) can only rotate around the fixed shaft (71). In a state where the driving shaft (51) is fitted into the hole (3) of the blade portion (150), the hole (3) of the blade portion (150) can extend in one direction so that the driving shaft (51) can move. For example, the hole (3) can extend in a direction intersecting with the rotational direction of the blade portion (150) around the fixed shaft (71).

[0115] The hole (3) of the blade portion (150) may be formed to correspond to the path along which the drive shaft (51) of the rotor (110) moves. For example, the hole (3) of the blade portion (150) may be extended to guide the path along which the drive shaft (51) of the rotor (110) moves. For example, the hole (3) of the blade portion (150) may be extended or formed to be inclined with respect to the rotational direction of the rotor (110).

[0116] For example, each of the blades (150A to 150F) may include a hole (41A to 41F) for coupling with a fixed shaft (71) and a hole (3A to 3F) for coupling with a driving shaft (51).

[0117] The hole (3) of the blade portion (150) may be expressed as a “driving shaft hole”, a “coupling hole”, a “guide hole”, a moving shaft hole, or a first hole (or a second hole). The hole (41) of the blade portion (150) may be expressed as a “rotating shaft hole”, a “coupling hole”, a “fixed shaft hole”, or a second hole (or a first hole).

[0118] In the aperture module (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 module (100), the "fixed part" may be an element or component that does not move or rotate with the moving part of the aperture module (100). In the aperture module (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."

[0119] For example, in the aperture module (100), the "moving part (or rotating part)" may include a rotor (110) and a blade part (150). In addition, for example, in the aperture module (100), the "moving part (or rotating part)" may include a component (e.g., a magnet (130)) that is coupled to the rotor (110). For example, in the aperture module (100), the "moving part (or rotating part)" may include a drive shaft (51). In addition, for example, in the aperture module (100), the "moving part (or rotating part)" may include a support plate (160).

[0120] In the aperture module (100), the fixing member may include at least one of the base (140) and the cover member (300). In the aperture module (100), the fixing member may include a configuration that is coupled to the base (140) or the cover member (300). For example, in the aperture module (100), the fixing member may include at least one of the circuit board (190) and the coil (120). For example, in the aperture module (100), the fixing member may further include a configuration (e.g., a position sensor (170), a temperature sensor (175), a magnetic body (95, 86), and a reinforcing member (70)) that is coupled to the circuit board (190).

[0121] Each of the plurality of blades (150A to 150F) can move. Alternatively, the plurality of blades (150A to 150F) can move or rotate within a preset range. The size (e.g., diameter) of the opening (201) can be varied by the movement or motion of the plurality of blades (150A to 150F). The opening (201) can also be expressed as a “hollow”, an “inlet”, or an “inlet hole”. By controlling the movement of the blades (150A to 150F), openings (201) having different sizes can be implemented.

[0122] The rotor (110) may be placed within the cover member (300). The rotor (110) may be placed under the blade portion (150). The rotor (110) may be rotatable. The rotor (110) may be connected to the blade portion (150), and the opening (201) of the blade portion (150) may be changed by the rotation of the rotor (110).

[0123] The rotor (110) may include an opening (401) corresponding to or opposite to the opening (201) of the blade portion (150), the opening (303) of the cover member (300), or the opening (205) of the support plate (160) in the first direction. The opening (401) may be a through hole or hollow hole penetrating the rotor (110) in the first direction.

[0124] The rotor (110) may be expressed as a “rotating body”, “driving body”, “driving plate”, “rotating plate”, “rotating frame”, “moving plate”, “moving body”, “rotating ring”, “driving ring”, or “driving frame”.

[0125] The size (e.g., area or diameter) of the opening (401) of the rotor (110) may be larger than the size of the opening (201) of the blade portion (150). In this case, the size of the opening (201) 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 (201) of the blade portion (150). In addition, the size (e.g., area or diameter) of the opening (401) of the rotor (110) may be larger than the size of the opening (205) of the support plate (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 (205) of the support plate (160).

[0126] For example, the rotor (110) may include a circular ring shape or a disk shape to facilitate rotation. The rotor (110) may include a body (110A) and at least one extension portion (110B) extending from the body (110A). For example, at least a portion of the extension portion (110B) may be positioned within the base (140).

[0127] For example, the extension (110B) may extend or protrude downward from the body (110A). The extension (110B) may also be expressed as a “protrusion” or a “receiving portion.” An opening (401) may be formed in the body (110A). The body (110A) may have a circular ring shape or a disc shape. The extension (110B) may accommodate a magnet (130). The magnet (130) may be disposed in the extension (110B) or coupled with the extension (110B).

[0128] For example, the rotor (110) may include a first extension (110B1) in which a first magnet unit (130A) is arranged or coupled, and a second extension (110B2) in which a second magnet unit (130B) is arranged or coupled.

[0129] The rotor (110) may include a receiving portion (24A) for receiving the magnet (130). For example, the receiving portion (24A) of the rotor (110) may be a "groove" or a "receiving groove." For example, the receiving portion (24A) may be positioned or formed in an extension portion (110B) of the rotor (110). For example, the number of extension portions (110B) may be the same as the number of magnets (130).

[0130] For example, the rotor (110) may include two extensions (110B1, 110B2) positioned on opposite sides of the body (110A) with respect to the opening (401). The two extensions (110B1, 110B2) may be positioned opposite each other in a second direction that is perpendicular to the first direction.

[0131] Each of the extensions (110B1, 110B2) may be formed with a receiving portion (24A). The receiving portion (24A) may have an open lower side. The receiving portion (24A) may have a surface facing the coil (120) open. The shape of the receiving portion (24A) may have a shape corresponding to or identical with the magnet unit (130A, 130B). For example, the receiving portion (24A) may have a curved shape or a curved shape corresponding to the curved shape or the curved shape of the magnet unit (130A, 130B).

[0132] For example, the side of the magnet unit (130A, 130B) facing the side of the receiving portion (24A) may be curved, and the side of the receiving portion (24A) may be a curved surface that is the same as or coincides with the curved surface of the magnet unit (130A, 130B).

[0133] The magnet (130) may be placed within the receiving portion (24A). Each of the magnet units (130A, 130B) of the magnet (130) may be placed within a corresponding receiving portion (24A) of the two extension portions (110B1, 110B2). The magnet (130) may be coupled to the receiving portion (24A) by an adhesive. An injection groove (19A) for facilitating adhesive injection may be formed at the lower or lower end of the extension portion (110B1, 110B2). In addition, a guide groove (18A) for facilitating adhesive spreading may be formed at at least one of the side or bottom surface of the receiving portion (24A). For example, the guide groove (18A) may be connected or communicated with the injection groove (19A).

[0134] The rotor (110) may include a drive shaft (51) for rotating or moving the blade portion (150). The drive shaft (51) may be connected or interlocked with the blade portion (150).

[0135] The drive shaft (51) may be expressed as a “moving shaft”, a “pillar”, a “protrusion”, a moving boss, or a “connecting shaft”. For example, the drive shaft (51) may have a cylindrical shape or a rod shape.

[0136] The rotor (110) may include a plurality of drive shafts (51A to 51D) corresponding to a plurality of blades (150A to 150F). For example, the number of drive shafts (51) may be the same as the number of blades. The plurality of drive shafts (51A to 51D) may be arranged spaced apart from each other. The drive shaft (51) may protrude or extend from the body (110A) of the rotor (110). For example, the drive shaft (51) may protrude or extend from the body (110A) in a direction toward the blade portion (150). The drive shaft (51) may be formed integrally with the body (110A). In another embodiment, the drive shaft (51) may have a structure that is coupled to the body (110A).

[0137] For example, one end of the drive shaft (51) can be inserted or fitted into a hole (3) (or drive shaft hole) of the blade portion (150A to 150F). For example, one end of each of the plurality of drive shafts (51A to 51F) can be inserted or fitted into a corresponding one of the holes (3A to 3F) of the blades (150A to 150F).

[0138] The aperture module (100) may include a support plate (160) positioned between the blade portion (150) and the rotor (110). The support plate (160) may serve to support at least a portion of the blade portion (150). For example, the support plate (160) may support at least one of the blades (150A to 150F). The support plate (160) may also be referred to as a “base sheet,” a “support sheet,” or a “spacer.”

[0139] The support plate (160) may have a circular opening (205). The opening (205) may be a through hole. The shape of the opening (201) of the blade portion (150) may have a polygonal shape or a circular shape depending on the positions of the blades (150A to 150F). The support plate (160) may play a role in making the shape of the opening of the aperture module (100) that receives light incident from the outside circular.

[0140] The support plate (160) may include escape portions (161A to 161F) to avoid spatial interference with the drive shaft (51) of the rotor (110). For example, it may include a plurality of escape portions (161A to 161F) corresponding to a plurality of drive shafts (51A to 51F). The escape portions (161A to 161F) may be holes penetrating the support plate (160). In another embodiment, the escape portions may be grooves that are recessed from the outer surface of the support plate (160).

[0141] The rotor (110) may include a seating portion (31A) for placing or settling at least a portion of the support plate (160). For example, the seating portion (31A) may be placed on the upper surface of the body (110A). The seating portion (31A) may be a groove that is recessed from the upper surface of the body (110A). At least a portion of the support plate (160) may be joined to the rotor (110) by an adhesive. For example, at least a portion of the support plate (160) may be joined to the seating portion (31A) of the support plate (160) by an adhesive. An adhesive receiving groove (31B, 31C) for receiving an adhesive may be formed in the seating portion (31A). For example, the adhesive receiving groove (31C) may be formed around the drive shaft (51).

[0142] Referring to FIG. 4B, the rotor (110) may include a first surface (5A) (or “first region”), a second surface (5B) (or “second region”), and a third surface (3C) (or “third region”) having steps in a first direction. The second surface (5B) may be positioned higher than the first surface (5A). The third surface (5C) may be positioned higher than the second surface (5B). For example, the upper surface of the rotor (110) may include a first surface (5A) (or “first region”), a second surface (5B) (or “second region”), and a third surface (3C) (or “third region”) having steps in a first direction.

[0143] For example, the first surface (5A) may be the bottom surface of the mounting portion (31A). The support plate (160) may be placed on the first surface (5A) of the rotor (110). For example, the support plate (160) may be bonded to the first surface (5A) of the rotor (110) by an adhesive. Adhesive receiving grooves (31B, 31C) may be formed on the first surface (5A) of the rotor (110).

[0144] For example, the support plate (160) may include a protrusion (163) disposed on the first surface (5A) of the rotor (110). For example, the support plate (160) may include a plurality of protrusions (163A to 163F) that are spaced apart from each other. At least a portion of the escape portions (161A to 161F) of the support plate (160) may be formed in the protrusions (163A to 164F). For example, the escape portions (161A to 161F) may penetrate at least a portion of the protrusions (163A to 163F) of the support plate (160). Also, for example, the escape portions (161A to 161F) may be formed adjacent to or in contact with the protrusions (163A to 163F) of the support plate (160).

[0145] For example, the thickness of the support plate (160) may be less than or equal to the depth of the mounting portion (31A). For example, the depth of the mounting portion (31A) may be the distance from the first surface (5A) to the second surface (5B). The first surface (5A) may be adjacent to or in contact with the opening (401). Alternatively, the first surface (5A) may be disposed adjacent to or in contact with the inner surface of the rotor (110). For example, the second surface (5B) may be located on the outer side of the first surface (5A). Additionally, the third surface (5C) may be located on the outer side of the first surface (5A).

[0146] For example, there may be a plurality of second surfaces (5B) (or "second regions"). There may be a plurality of third surfaces (5C) (or "third regions"). For example, the second surfaces (5B) (or "second regions") may be spaced apart in a clockwise direction (or counterclockwise direction) or in a direction of rotation about the optical axis. For example, the third surfaces (5C) (or "third regions") may be spaced apart in a clockwise direction (or counterclockwise direction) or in a direction of rotation about the optical axis.

[0147] For example, the third surface (5C) (or third region) of the rotor (110) may be positioned between two adjacent surfaces (5B) (or second regions). For example, the first surface (5A), the second surface (5B), and the third surface (5C) may be sequentially arranged in a clockwise direction or in a direction of rotation relative to the optical axis. The first surface (5A), the second surface (5B), and the third surface (5C) may be sequentially arranged alternately in a clockwise direction or in a direction of rotation relative to the optical axis.

[0148] Some of the blades (150A, 150C, 150E) may be positioned on the second surface (5B). For example, at least a portion of the blade portions (150A, 150C, 150E) may be in contact with the second surface (5B). For example, the second surface (5B) may be positioned to correspond to, face, or overlap at least a portion of the blade portions (150A, 150C, 150E) in the first direction.

[0149] Other blades (150B, 150D, 150F) may be positioned on the third surface (5C). For example, at least some of the blades (150B, 150D, 150F) may be in contact with the third surface (5C). For example, the third surface (5C) may be positioned to correspond with, face, or overlap at least some of the blades (150B, 150D, 150F) in the first direction. In this way, since the support plate (160), some blades (150A, 150C, 150E), and other some blades (150B, 150D, 150F) are each arranged on a corresponding one of the first surface (5A), the second surface (5B), and the third surface (5C) having a step, the support plate (160), the blades of the first layer (150A, 150C, 150E), and the blades of the second layer (150B, 150D, 150F) can avoid spatial interference with each other, and the movement or rotation of the blades (150A to 150F) can be facilitated.

[0150] The rotor (110) may include a support (47) for supporting at least a portion of the cloud member (40). The support (47) may protrude downward from the body (110A) of the rotor (110). The support (47) may protrude from the body (110A) of the rotor (110) in a direction toward the base (140). The support (47) may be expressed by replacing it with a protrusion or projection.

[0151] For example, the support (47) may protrude from the lower surface (110C) of the rotor (110). The support (47) may be positioned inside the outer surface or outer circumference of the rotor (110) with respect to the optical axis. For example, the support (47) may be positioned closer to the inner circumference (or inner surface) of the rotor (110) than the outer surface (or outer circumference) of the rotor (110). This is to ensure that the support (47) is adjacent to or in contact with the cloud member (40).

[0152] The rotor (110) may include a plurality of support members (47A to 47D) corresponding to the ball members (B1 to B4). At least a portion of the support member (47) may face or overlap at least a portion of the cloud member (40) in a direction perpendicular to the first direction. At least a portion of the cloud member (40) may be in contact with the support member (47) of the rotor (110).

[0153] The base (140) may be positioned below the body (110A) of the rotor (110). The base (140) may accommodate at least a portion of the rotor (110). For example, the rotor (110) and the base (140) may be formed by an injection molding method using an injection mold. For example, the rotor (110) and the base (140) may be formed of an injection moldable material, such as plastic or resin.

[0154] Referring to FIGS. 6A to 8D , for example, the base (140) may include an internal space capable of accommodating at least a portion of the extension portions (110B1, 110B2) of the rotor (110). In addition, the base (140) may accommodate at least a portion of the lens module (400) therein (see FIG. 13C ). For example, at least a portion of the first portion (510) and the third portion (530) of the lens module (400) may be disposed within the base (140).

[0155] For example, the base (140) may include an opening (501). The opening (501) may be a through hole or hollow that penetrates the base (140) in the first direction. For example, the base (140) may have a cylindrical shape.

[0156] Referring to FIGS. 5B, 6A, and 10A, the upper surface of the base (140) may face or overlap with the lower surface of the rotor (110) in the first direction. The lower portion, or lower surface, of the rotor (110) may include a first surface (110C) (or “first region”) and a second surface (8A) (or “second region”) having a step in the first direction from the first surface (110C) (or “first region”). When viewed from below, the second surface (8A) (or “second region”) may be positioned higher than the first surface (110C) (or “first region”). For example, the first surface (110C) (or first region) may be a portion protruding from the second surface (8B) (or “second region”). The first surface (110C) (or “first region”) of the rotor (110) may be a plurality of. There may be multiple second surfaces (8B) (or “second regions”) of the rotor (110).

[0157] For example, the first faces (110C) (or “first regions”) of the rotor (110) may be spaced apart in a clockwise (or counterclockwise) direction or in a direction of rotation about the optical axis. For example, the second faces (8A) (or “second regions”) of the rotor (110) may be spaced apart in a clockwise (or counterclockwise) direction or in a direction of rotation about the optical axis.

[0158] The upper or top surface of the base (140) may include a first surface (14A) (or “first region”) and a second surface (14B) (or “second region”) having a step in a first direction. The second surface (14B) (or “second region”) may be positioned lower than the first surface (14A) (or “first region”).

[0159] The first surface (14A) (or first region) of the base (140) may face or overlap with the second surface (8A) (or second region) of the rotor (110) in the first direction. The first surface (110C) (or first region) of the rotor (110) may face or overlap with the second surface (14B) (or second region) of the base (140) in the first direction.

[0160] For example, the first region (14A) of the base (140) may protrude from the second region (14B). For example, the first region (14A) of the base (140) may protrude upward from the second region (14B). There may be a plurality of first surfaces (14A) (or "first regions") of the base (140). There may be a plurality of second surfaces (14B) (or "second regions") of the base (140).

[0161] For example, the first faces (14A) (or "first regions") may be spaced apart in a clockwise (or counterclockwise) direction or in a direction rotating about the optical axis. For example, the second faces (14B) (or "second regions") may be spaced apart in a clockwise (or counterclockwise) direction or in a direction rotating about the optical axis. For example, the third faces (14C) (or "third regions") of the base (140) may be plural.

[0162] The first side (14A) (or “first region”) of the base (140) may be positioned between two adjacent second sides (14B) (or “second regions”). The second side (14B) (or “second region”) of the base (140) may be positioned between two adjacent first sides (14A) (or “first regions”). The first side (14A) (or “first region”) and the second side (14B) (or “second region”) of the base (140) may be alternately arranged one or more times in a clockwise direction or a direction rotating about the optical axis.

[0163] The fixed axis (71) of the base (140) may be placed on the first surface (14A) (or “first region”) of the base (140). In addition, the fixed axis (71) may protrude from the first surface (14A) (or “first region”) of the base (140).

[0164] The rotor (110) may include a escape portion (61) to avoid spatial interference with the fixed shaft (71). The escape portion (61) may be arranged or formed on the third surface (5C) (or the third region) of the rotor (110). In FIG. 5B, the escape portion (61) of the rotor (110) may be in the form of a through hole penetrating the body (110A) in the first direction. In another embodiment, the escape portion (61) may be in the form of a groove formed in the body (110A) or an escape groove in which a portion of the body (110A) is sunken. Alternatively, the escape portion (61) may be in the form of a chamfered portion of the body (110A). In the first direction, the escape portion (61) may overlap the fixed shaft (71).

[0165] For example, there may be a plurality of escape portions (61). The plurality of escape portions (61A to 61F) may be spaced apart from each other in a clockwise direction (or counterclockwise direction), a circumferential direction of the rotor (110), or a direction in which the rotor (110) rotates. The length of the escape portion (61) may be equal to or greater than the movement distance or movement range of the rotor (110). In this case, the length of the escape portion (61) may be the length of the escape portion in the circumferential direction of the rotor (110). Alternatively, the length of the escape portion (61) may be the distance between one end and the other end of the escape portion (61) located on opposite sides in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates.

[0166] The lower surface of the rotor (110) and the upper surface of the base (140) can be spaced apart from each other by the cloud member (40). In addition, when the rotor (110) rotates, the lower surface (or lower surface) of the rotor (110) and the upper surface (or upper surface) of the base (140) can have an escape structure to avoid spatial interference with each other.

[0167] For example, the lower surface of the rotor (110) may include a escape portion (55) corresponding to, opposite to, or overlapping the first region (14A) of the base (140). For example, the escape portion (55) may be a groove that is recessed from the lower surface of the rotor (110). For example, the escape portion (55) may include a bottom surface (8A) having a step from the first surface (110C) of the lower surface of the rotor (110) and a side surface (8B) connecting the bottom surface (8A) and the first surface (110C). For example, the bottom surface (8A) of the escape portion (55) may be a “second surface” of the lower surface of the rotor (110).

[0168] Since the first surface (14A) (or “first region”) of the base (140) must not cause spatial interference with the rotor (110) within the rotational range (or driving range) of the rotor (110), the length of the escape portion (55) may be greater than the length of the first surface (14A) (or “first region”) of the base (140). At this time, the length of the escape portion (55) may be the length in the circumferential direction of the rotor (110). Alternatively, the length of the escape portion (55) may be the distance between one end and the other end of the escape portion (55) located opposite each other in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates. Alternatively, the length of the escape portion (55) may be the length of the bottom surface (8A) of the escape portion (55).

[0169] The length of the first side (14A) (or “first region”) of the base (140) may be the length of the first side in the circumferential direction of the base (140) or the distance between one end and the other end of the first side (14A) of the base (140) located opposite each other in the circumferential direction of the base (140).

[0170] Additionally, the upper surface of the base (140) may include a escape portion (48) corresponding to, opposite to, or overlapping with the first surface (110C) of the lower surface of the rotor (110). For example, the escape portion (48) may be a groove that is recessed from the upper surface of the base (140). The escape portion (48) may include a bottom surface (14B) and a side surface (14E) connecting the bottom surface (14B) and the first surface (14A). For example, the bottom surface (14B) of the escape portion (48) may be a "second surface" of the upper surface of the base (140).

[0171] The escape portion (55) of the rotor (110) may include a plurality of escape portions (55A to 55F) corresponding to, opposite to, or overlapping the plurality of first faces (14A) of the base (140). In addition, the escape portion (48) of the base (140) may include a plurality of escape portions (48A to 48D) corresponding to, opposite to, or overlapping the first faces (110C) of the rotor (110). The escape portions (48A to 48D) may be spaced apart from each other in a clockwise direction or a direction of rotation relative to the optical axis.

[0172] Since the first surface (110C) of the rotor (110) should not have spatial interference with the base (140) within the rotation range of the rotor (110), the length of the escape portion (48) of the base (140) of the rotor (110) may be greater than the length of the first surface (110C) of the rotor (110). At this time, the length of the escape portion (48) may be the length in the circumferential direction of the base (140) or the distance between one end and the other end of the escape portion (48) which are positioned opposite to each other in the circumferential direction of the base (140). In addition, the length of the first surface (110C) of the rotor (110) may be the length of the first surface (110C) in the circumferential direction of the rotor (110) or the distance between one end and the other end of the first surface (110C) which are positioned opposite to each other in the circumferential direction or rotational direction of the rotor (110). Alternatively, the distance of the escape portion (48) may be the length of the bottom surface of the escape portion (48).

[0173] The base (140) may include a fixed shaft (71) that is connected or coupled with the blade portion (150). The fixed shaft (71) may be placed on one surface of the base (140) facing the blade portion (150) (e.g., the upper surface or top of the base (140)).

[0174] The fixed shaft (71) may be expressed as a “rotation shaft”, “column”, “protrusion”, “fixed boss” or “joint shaft”. For example, the fixed shaft (71) may have a cylindrical shape or a rod shape.

[0175] For example, the fixed shaft (71) may protrude upward from the upper surface of the base (140). For example, the fixed shaft (71) may be a projection or a protrusion protruding from the upper surface or top of the base (140). For example, the fixed shaft (71) may be arranged on the first surface (14A) (or first region) of the base (140). For example, the fixed shaft (71) may protrude upward from the first surface (14A) (or first region) of the base (140).

[0176] The fixed shaft (71) can be inserted or fitted into the hole (41) of the blade portion (150). The fixed shaft (71) can be combined with the hole (41) of the blade portion (150). For example, a lubricant or grease can be placed in the fixed shaft (71) and the hole (41) of the blade portion (150) to facilitate rotation.

[0177] The fixed shaft (71) may include a plurality of fixed shafts (71A to 71D) corresponding to a plurality of blades (150A to 150F). For example, the number of fixed shafts (71) may be equal to the number of blades. For example, each of the fixed shafts (71A to 71F) may be inserted or fitted into a corresponding one of the holes (41A to 41F) of the blades (150A to 150F).

[0178] The fixed axes (71A to 71F) may be arranged spaced apart from each other. For example, a straight line connecting the fixed axes (71A to 71F) may form a regular polygon.

[0179] The base (140) may include an opening (141) for receiving or placing the coil (120). The opening (141) may penetrate a side or a lateral surface of the base (140). Additionally, the opening (141) may not open to the upper surface of the base (140). In other embodiments, the opening (141) may open to the upper surface of the base (140).

[0180] For example, the base (140) may include a first opening (141A) for receiving or placing a first coil unit (120A) and a second opening (141B) for receiving or placing a second coil unit (120B).

[0181] The base (140) may include a relief portion (79) to avoid spatial interference with the support portion (47) of the rotor (110). The relief portion (79) may be a recessed groove formed from the upper surface of the base (140). For example, the relief portion (79) may be a groove including a bottom surface (14C) and a side surface (14D). The bottom surface (14C) may be positioned lower than the upper surface of the base (140) (e.g., the first surface (14A) or the second surface (14B)).

[0182] The escape portion (79) may be positioned adjacent to the inner surface (21A) (or “inner surface”) of the base (140). The escape portion (79) may include an opening that opens to the inner surface (21A) of the base (140). The escape portion (79) may be formed to extend in the direction in which the rotor (110) rotates.

[0183] When the rotor (110) rotates, the escape portion (79) of the rotor (110) can play a role in preventing the support portion (47) from causing spatial interference with the base (140). Since the support portion (47) should not cause spatial interference with the base (140) within the rotation range of the rotor (110), the length of the escape portion (79) can be greater than the length of the support portion (47) of the rotor (110).

[0184] At this time, the length of the escape portion (79) may be the length of the escape portion (79) in the circumferential direction of the base (140). Alternatively, the length of the escape portion (79) may be the distance between one end and the other end of the escape portion (79) which are positioned opposite to each other in the circumferential direction of the base (140). In addition, the length of the support portion (47) may be the length of the support portion (47) in the circumferential direction of the rotor (110). Alternatively, the length of the support portion (47) may be the distance between one end and the other end of the support portion (47) which are positioned opposite to each other in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates. In the first direction, the support portion (47) of the rotor (110) may overlap the escape portion (79) of the base (140).

[0185] Referring to FIGS. 6A and 8D, the base (140) may include a receiving portion (33) for receiving at least a portion of the cloud member (40). The receiving portion (33) may be in the form of a recessed groove from the upper surface of the base (140). The receiving portion (33) may also be expressed as a “groove” or a “guide groove.” The receiving portion (33) of the base (140) may have a space in which the extension portion (110B) of the rotor (110) can rotate.

[0186] For example, the receiving portion (33) may be disposed on or formed in the escape portion (48) of the base (140). For example, the receiving portion (33) may be formed on the bottom surface of the escape portion (48). For example, the receiving portion (33) may be a recessed groove from the second surface (14B) of the base (140). The receiving portion (33) may include a bottom surface (22A) and a side surface (22B) (or “side wall”). The receiving portion (33) may include an opening that is open in a direction toward the support portion (47) of the rotor (110).

[0187] Referring to FIG. 12b, the depth of the receiving portion (33) may be greater than the size (e.g., diameter) of the cloud member (40). For example, the depth of the receiving portion (33) may be the distance in the first direction from the bottom surface (22A) of the receiving portion (33) to the second surface (14B) of the base (140).

[0188] At least a portion of the ball members (B1 to B4) arranged within the receiving portion (33) of the base (140) may protrude from the upper surface of the base (140). At least a portion of the ball members (B1 to B4) may protrude outside the receiving portion (33) of the base (140). For example, at least a portion of the ball members (B1 to B4) arranged within the receiving portion (33) of the base (140) may protrude from the second surface (14B) of the base (140). As a result, the rotor (110) arranged on the ball members (B1 to B4) may be arranged to be spaced apart from the base (140), and the rotor (110) may be easily moved or rotated.

[0189] The receiving portion (33) may include a plurality of receiving portions (33A to 33D) corresponding to a plurality of ball members (B1 to B4). For example, when viewed from above, the receiving portion (33) or the cloud member (40) may be positioned between two adjacent fixed axes of the base (140).

[0190] Referring to FIG. 8D, the length of the receiving portion (33) may be greater than the size (e.g., diameter) of the cloud member (40). For example, the length (L1) of the receiving portion (33A) may be greater than the size (e.g., diameter) of the ball member (e.g., B1). L1 may be the length of the receiving portion (33) in the circumferential direction of the base (140). Since L1 is greater than the length of the ball member (e.g., B1), the ball member (e.g., B1) may be movable or slidable in the circumferential direction of the base (140) within the receiving portion (e.g., 33A).

[0191] In FIG. 8d, one ball member (e.g., B1) is placed within one receiving portion (e.g., 33A), but in other embodiments, two or more ball members may be placed within one receiving portion (e.g., 33A).

[0192] Referring to FIGS. 4C, 5B, and 12C, the ball member (40) can be brought into contact with at least one of the bottom surface (22A), the side surface (22B) of the receiving portion (33), and the support portion (47) of the rotor (110). For example, the support portion (47) of the rotor (110) can include an outer surface (73B) positioned between the lower surface (73A) of the support portion (47) and the first surface (110C) of the rotor (110). The outer surface (73B) of the support portion (47) can connect the lower surface of the support portion (47) and the first surface (110C) of the rotor (110).

[0193] Referring to FIG. 4C, the outer surface (73B) of the support portion (47) may be a curved surface that is curved in the circumferential direction of the rotor (110). For example, the outer surface (73B) of the support portion (47) may be a convex curved surface in the direction from the inner surface (73C) of the support portion (47) toward the outer surface (73B) of the support portion (47). For example, the outer surface (73B) of the support portion (47) and the receiving portion (33) of the base (140) may be a curved surface, an arc, or a curved shape having the same concentricity.

[0194] The outer surface (73B) of the support member (47) may overlap with the side surface (22B) of the receiving member (33) in a direction perpendicular to the optical axis direction or in a direction perpendicular to the first direction. The support member (47) may face or overlap with the protrusion (34) of the base (140) in the first direction.

[0195] The outer surface (73B) of the support member (47) may be an inclined surface with respect to the lower surface (110C) of the rotor (110). The inner angle (θ1) between the outer surface (73B) of the support member (47) and the lower surface (110C) of the rotor (110) may be an obtuse angle. By making the inner angle (θ1) an obtuse angle, the area where the rotor (110) comes into contact with the cloud member (40) can be increased, and thus the rotor (110) can be stably supported.

[0196] For example, the inner angle (θ1) between the outer surface (73B) of the support member (47) and the lower surface (110C) of the rotor (110) may be greater than 90 degrees and less than or equal to 160 degrees. For example, the inner angle (θ1) may be greater than 90 degrees and less than or equal to 135 degrees. For example, the inner angle (θ1) may be greater than or equal to 100 degrees and less than or equal to 120 degrees. The ball member (40) may be in contact with the outer surface (73B) of the support member (47).

[0197] The support (47) of the rotor (110) may be positioned inside the receiving portion (33) of the base (140). For example, the optical axis or center (101) may be positioned closer to the support portion (47) of the rotor (110) than to the receiving portion (33) of the base (140). The outer surface of the base (140) may be positioned closer to the receiving portion (33) of the base (140) than to the support portion (47) of the rotor (110).

[0198] Fig. 9 shows a receiving portion (23) of a base (140) according to another embodiment.

[0199] Referring to FIG. 9, the receiving portion (23) may have a size such that the cloud member (40) can be inserted or seated therein and the cloud member (40) does not move. For example, the length (L2) of the receiving portion (23) may be equal to the diameter of the cloud member (40). In FIG. 9, the cloud member (40) disposed on the base (140) may not be able to move in the circumferential direction of the base (140). The cloud member (40) may roll or rotate within the receiving portion (23). The receiving portion (23) of FIG. 9 may include a plurality of receiving portions (23A to 23D).

[0200] The base (140) may include a second surface (14B) (or “second region”) and a third surface (14C) (or “third region”) having a step in the first direction. The third surface (14C) (or “third region”) may be positioned lower than the second surface (14B) (or “second region”). For example, when viewed from above, the third surface (14C) may be located between the second surface (14B) and the hollow (401) of the base (140). Or, when viewed from above, the third surface (14C) may be located between the second surface (14B) and the inner surface (21A) of the base (140). For example, the third surface (14C) may be the bottom surface of the escape portion (79). The base (140) may include a fourth surface (14D) connecting the second surface (14B) and the third surface (14C). For example, the fourth surface (14D) may be the side surface of the escape portion (79).

[0201] At least a portion of the cloud member (40) may protrude from the fourth surface (14D) of the base (140), and at least a portion of the protruding cloud member (40) may be in contact with the rotor (110). For example, at least a portion of the protruding cloud member (40) may be in contact with the support (47) of the rotor (110).

[0202] The base (140) may include a protrusion (34) protruding from the bottom surface (14C) of the escape portion (79). For example, a part of the cloud member (40) may be located between the protrusion (34) of the base (140) and the side surface (22B) of the receiving portion (33). The protrusion (34) may serve to prevent the cloud member (40) from being separated from the receiving portion (33) of the base (140). In addition, a lubricant or grease may be placed within the receiving portion (33) of the base (140) to facilitate rotation or sliding of the cloud member (40), and the protrusion (34) of the base (140) may prevent the lubricant or grease placed within the receiving portion (33) of the base (140) from overflowing.

[0203] For example, the protrusion (34) may be positioned adjacent to or in contact with the inner surface (21A) of the base (140). For example, the inner surface (21A) of the base (140) may include the outer surface of the protrusion (34). The protrusion (34) may be spaced apart from the fourth surface (14D), and a third surface (14C) may be positioned between the protrusion (34) and the fourth surface (14D). The upper surface of the protrusion (34) may be lower than the second surface (14B). In addition, the height of the protrusion (34) may be smaller than the diameter of the cloud member (40). There may be a plurality of protrusions (34). The plurality of protrusions (34A to 34D) may be positioned spaced apart from each other in a clockwise direction or a direction rotating around the optical axis. The protrusion (34) may also be expressed as a “step.”

[0204] The base (140) may include a receiving portion (35) for receiving an extension portion (110B) of the rotor (110). In a second direction perpendicular to the first direction, the receiving portion (35) of the base (140) may face the extension portion (110B) of the rotor (110).

[0205] The receiving portion (35) may be a groove that is sunken into the inner surface (21A) of the base (140). For example, the receiving portion (35) may include a first surface (17A) having a step from the inner surface (21A) of the base (140) in a second direction perpendicular to the first direction, and a second surface (17B) connecting the first surface (17A) and the inner surface (21A) of the base (140). The first surface (17A) may be positioned outside the inner surface (21A) of the base (140) with respect to the center line or the optical axis.

[0206] The opening (141) of the base (140) may be positioned within the receiving portion (35) of the base (140). For example, the opening (141) of the base (140) may be formed on the first surface (17A) of the base (140). For example, the opening (141) may penetrate through the first surface (17A) of the base (140).

[0207] The receiving portion (35) may play a role in preventing the extension portion (110B) of the rotor (110) from causing spatial interference with the base (140) when the rotor (110) rotates. Since the extension portion (110B) should not cause spatial interference with the base (140) within the rotation range of the rotor (110), the length of the receiving portion (35) may be greater than the length of the extension portion (110B) of the rotor (110).

[0208] At this time, the length of the receiving portion (35) may be the length in the circumferential direction of the base (140) or the distance between one end and the other end of the receiving portion (35) located opposite each other in the circumferential direction of the base (140). For example, the length of the receiving portion (35) may be the length of the first surface (17A) of the receiving portion (35). In addition, the length of the extension portion (110B) of the rotor (110) may be the length of the extension portion (110B) in the circumferential direction of the rotor (110). Alternatively, the length of the extension portion (110B) may be the distance between one end and the other end of the extension portion (110B) located opposite each other in the circumferential direction or rotational direction of the rotor (110).

[0209] The receiving portion (35) may include a first receiving portion (35A) for receiving a first extension portion (110B1) of the rotor (110) and a second receiving portion (35B) for receiving a second extension portion (110B2) of the rotor (110).

[0210] Referring to FIG. 5B, the extension portion (110B) may include at least one groove portion (2A, 2B) formed on the outer surface. The groove portion (2A, 2B) may also be expressed as an “escaping portion,” an “escaping groove,” or a “groove.” For example, the groove portion (2A, 2B) may be recessed from the outer surface of the extension portion (110B). For example, the groove portion (2A, 2B) may be arranged or formed on at least one of two outer surfaces of the extension portion (110B) that are opposite to each other in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates. For example, the groove portion (2A, 2B) may be arranged between the magnet (130) and the body (110A). The groove portion (2A, 2B) may be located on the magnet (130).

[0211] For example, the extension portion (110B) may include a first portion (10A) on which a magnet (130) is arranged and a second portion (10B) positioned on the first portion (10A). A receiving portion (24A) may be formed on the first portion (10A). The second portion (10B) may connect the first portion (10A) and the body (110A).

[0212] For example, the length of the second part (10B) may be smaller than the length of the first part (10A). In this case, the length may be the length of the first part (10A) (or the second part (10B)) in the circumferential direction of the rotor (110). Alternatively, the length may be the length between one end and the other end of the first part (10A) (or the second part (10B)) which are positioned opposite each other in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates. Alternatively, the length may be the length of both ends of the first part (10A) (or the second part (10B)) which are positioned opposite each other in the circumferential direction of the rotor (110) or the direction in which the rotor (110) rotates.

[0213] For example, the grooves (2A, 2B) may be formed on the outer surface of the second portion (10B) of the extension portion (110B). The grooves (2A, 2B) may be recessed from the outer surface of the second portion (10B) of the extension portion (110B). For example, the grooves (2A, 2B) may be arranged or formed on at least one of two outer surfaces of the second portion (10B) that are positioned opposite to each other in the circumferential direction of the rotor (110) or in the direction in which the rotor (110) rotates.

[0214] The base (140) may include a fixed shaft (e.g., 71B, 71C, 71E, 71F) that overlaps the receiving portion (35; 35A and 35B) in the optical axis direction. In order to place the fixed shaft (e.g., 71B, 71C, 71E, 71F), the base (140) may include a protrusion (64) positioned above the receiving portion (35; 35A and 35B). The protrusion (64) may serve as a stopper that inhibits the extension portion (110B) of the rotor (110) from moving or rotating. The protrusion (64) may also be expressed as a “stopper.”

[0215] For example, the base (140) may include a first protrusion (64A) positioned on the upper side of one end of the receiving portion (35; 35A and 35B) and a second protrusion (64B) positioned on the upper side of the other end of the receiving portion (35; 35A and 35B). The grooves (2A, 2B) of the extension portion (110B) may correspond to or face the protrusion (64) of the base (140). The protrusion (64) of the base (140) may serve as a stopper that stops the rotation or movement of the rotor (110).

[0216] As the rotor (110) rotates clockwise or counterclockwise, the protrusion (64) of the base (140) can be inserted into the groove (2A, 2B) of the extension (110B). For example, when the rotor (110) rotates counterclockwise, the first protrusion (64A) of the base (140) can act as a stopper. Also, for example, when the rotor (110) rotates clockwise, the second protrusion (64B) of the base (140) can act as a stopper.

[0217] The reason for forming the grooves (2A, 2B) in the extension (110B) is to prevent the rotational range or movement range of the rotor (110) from being reduced by the protrusion (64) of the base (140). That is, the rotational range or movement range of the moving body (110) can be increased by the grooves (2A, 2B).

[0218] In another embodiment, the rotor (110) may include either one of the first and second grooves (2A, 2B), and the base (140) may include either one of the first and second protrusions (64A, 64B).

[0219] Referring to FIG. 11c, the base (140) may include at least one groove (50) formed on the inner surface. In addition, the base (140) may further include at least one groove (51) formed on the lower surface or bottom surface of the base (140). The groove (50 or 51) can reduce the thickness or width of the base (140) during injection molding, thereby improving the accuracy and ease of injection molding.

[0220] The base (140) may include a protrusion (43) for coupling with the circuit board (190). The protrusion (43) may protrude from the outer surface (or outer side) of the base (140). The protrusion (43) may be positioned adjacent to the opening (141) of the base (140). The protrusion (43) may include a plurality of protrusions (43A to 43D) spaced apart from each other. For example, the protrusions (43A to 43D) may be positioned below the opening (141), but in other embodiments, the protrusions may be positioned on the mounting portion (57).

[0221] Referring to FIGS. 6A, 7A, and 7B, the base (140) may include a mounting portion (57) for mounting or placing the circuit board (190). For example, the mounting portion (57) may include a protrusion or a step protruding from the outer surface of the base (140). For example, the mounting portion (57) may include a plurality of mounting portions (57A to 57D) that are spaced apart from each other. The mounting portion (57) may be located at the lower or lower side of the outer surface of the base (140). The mounting portion (57) may be located adjacent to the opening (141) of the base (140). For example, the mounting portion (57) may be in the form of a groove that is recessed from the outer surface of the base (140). The outer surface (27A) of the base (140) on which the mounting portion (57) is formed may be flat. The mounting portion (57) may include a side surface (27A) and a bottom surface (27B). The bottom surface (27B) may be flat. In another embodiment, the bottom surface (27B) may be curved. A protrusion (43) may be formed on the side surface (27A). In addition, a receiving portion (44) may be formed on the side surface (27A).

[0222] The base (140) may include a receiving portion (44) for placing, coupling, or fixing a magnetic body (86). The receiving portion (44) may be a groove that is recessed from the outer surface (or outer circumference) of the base (140). The receiving portion (44) may have a shape that is the same as or coincides with the magnetic body (86).

[0223] Referring to FIG. 11c, FIG. 13a, and FIG. 13b, the base (140) may include at least one recessed portion (49) that is recessed from the lower or bottom surface of the base (140). For example, the base (140) may include a plurality of recessed portions (49A to 49D) that are recessed from the bottom surface of the base (140). The plurality of recessed portions (49A to 49D) may be arranged to be spaced apart from each other in the circumferential direction of the base (140).

[0224] A plurality of grooves (49A to 49D) of the base (140) may correspond to, face, or overlap with the protrusions (521 to 524) of the lens barrel (510) of the lens module (400) in the optical axis direction. The grooves (49A to 49D) of the base (140) may be coupled with the protrusions (521 to 524) of the lens barrel (510). The grooves (49) of the base (140) and the protrusions (521 to 524) of the lens barrel (510) may serve as guides for guiding assembly, may increase the coupling area to improve the coupling strength, and may suppress the aperture module (100) from rotating or twisting due to impact.

[0225] The aperture module (100) may include a driving unit that drives the blade unit (150) or rotates or moves the rotor (110). The driving unit of the aperture module (100) may include a coil (120) that is placed, coupled, or fixed to the base (140) and a magnet (130) that is placed, coupled, or fixed to the rotor (110).

[0226] The rotor (110) can rotate or tilt within a preset range by the interaction between the coil (120) and the magnet (130). The rotor (110) can rotate or tilt around an optical axis or a center line. For example, the magnet (130) can be a magnet.

[0227] The magnet (130) may include a plurality of magnet units (130A, 130B).

[0228] In Fig. 4a, two magnet units are illustrated, but the present invention is not limited thereto. In another embodiment, the magnet (130) may include only one magnet unit. In another embodiment, the magnet (130) may include three or more magnet units. The magnet unit may be replaced with a “magnet unit.” For example, the number of magnet units of the magnet (130) and the number of coil units of the coil (120) may be the same.

[0229] Each magnet unit (130A, 130B) may include two N poles and two S poles. For example, the magnet (130) may be a four-pole magnet. For example, the magnet unit (130A) (or 130B) may include a first magnet portion (6A), a second magnet portion (6B), and a partition wall (6C) disposed between the first magnet portion (6A) and the second magnet portion (6B). The first magnet portion (6A) and the second magnet portion (6B) may be positioned on opposite sides in the circumferential direction of the rotor (110) with the partition wall (6C) therebetween. The partition wall (6C) separates or isolates the first magnet portion (6A) and the second magnet portion (6B), and may be a portion that is substantially non-magnetic and has almost no polarity. For example, the bulkhead (6C) may be a non-magnetic material, air, etc. The bulkhead may be expressed as a “neutral zone”, “neutral region”, or “non-magnetic bulkhead”.

[0230] For example, referring to Fig. 4a, each of the first magnet portion (6A) and the second magnet portion (6B) may include an N pole and an S pole. In the circumferential direction of the rotor (110), the first magnet portion (6A) and the second magnet portion (6B) may be arranged so that their opposite polarities face each other.

[0231] For example, the N pole and the S pole of each of the first magnet portion (6A) and the second magnet portion (6B) may be arranged to face or be separated from each other in a second direction perpendicular to the first direction. For example, the outer surface (7A) of the magnet (130; 130A, 130B) may include the N pole and the S pole. For example, the N pole (or S pole) of the first magnet portion (6A) and the S pole (or S pole) of the second magnet portion (6B) may form the outer surface of the magnet, and the S pole (or N pole) of the first magnet portion (6A) and the N pole (or S pole) of the second magnet portion (6B) may form the inner surface of the magnet (130).

[0232] In another embodiment, the first magnet portion and the second magnet portion of the magnet unit (130A or 130B) may be arranged to face each other in the first direction with a partition wall therebetween. In another embodiment, the magnet (130) may include one N pole and one S pole. For example, in another embodiment, the magnet (130) may be a two-pole magnetizing magnet. For example, in another embodiment, the N pole and the S pole of the magnet unit may face each other in a first direction that is perpendicular to the first direction. In another embodiment, the N pole and the S pole of the magnet unit may face each other in the first direction or may be separated from each other.

[0233] The magnet unit (130A or 130B) may include a curved shape or a curved shape. For example, when viewed from above or in the direction of the optical axis, the outer shape of the magnet unit (130A, 130B) may include a curved shape. For example, the outer peripheral surface (or outer surface) of the magnet unit (130A or 130B) may include a curved shape or a curved shape. In addition, the inner peripheral surface (or inner surface) of the magnet unit (130A or 130B) may have a curved shape or a curved shape. In another embodiment, the inner peripheral surface (or inner surface) of the magnet unit (130A or 130B) may have a straight shape.

[0234] For example, the inner surface (or inner side) of the magnet unit (130A, 130B) may be a side of the magnet unit (130A, 130B) that faces or opposes the optical axis, and the outer surface (or outer side) of the magnet unit (130A, 130B) may be an opposite surface of the inner surface (or inner side) of the magnet unit (130A, 130B).

[0235] The magnet unit (130A, 130B) may be convexly curved in a direction from the inner surface of the magnet unit (130A, 130B) toward the outer surface of the magnet unit (130A, 130B). For example, the curvature of the outer surface (or outer side) of the magnet unit (130A or 130B) may be greater than the curvature of the inner surface (or inner side) of the magnet unit (130A or 130B). This is to facilitate placement or installation of the magnet unit (130A, 130B) on the cylindrical rotor (110). In addition, this is to facilitate rotation of the magnet unit (1330A, 130B) together with the rotor (110).

[0236] The coil (120) may be placed, coupled, or fixed to the base (140) so as to correspond to or face the magnet (130). For example, the coil (120) may face or overlap the magnet (130) in a direction perpendicular to the optical axis direction (e.g., the second direction). For example, within the rotational range of the rotor (110), at least a portion of the coil (120) may overlap the magnet (130) in a direction perpendicular to the optical axis direction (e.g., the second direction). The coil (120) may not overlap the magnet (130) in the first direction (or the optical axis direction).

[0237] The coil (120) may include a plurality of coil units (120A, 120B) corresponding to the magnet units (130A, 130B). The number of coil units of the coil (120) may be the same as the number of magnet units of the magnet (130) for driving. In another embodiment, the number of coil units of the coil (120) (or the number of magnet units of the magnet (130)) may be 1. Or, in another embodiment, the number of coil units of the coil (120) (or the number of magnet units of the magnetic member (130)) may be 3 or more.

[0238] Each of the coil units (120A, 120B) may be opposite or overlapped with a corresponding one of the magnet units (130A, 130B) in a second direction perpendicular to the first direction. Each of the coil units (120A, 120B) may include a hollow portion (9A, see FIG. 6B).

[0239] Each of the coil units (120A, 120B) may have a ring shape wound around an axis parallel to the second direction. Each of the coil units (120A, 120B) may also be a ring-shaped coil block. For example, each of the coil units (120A, 120B) may include a ring-shaped body, and the body may include a hollow (9A) (or hole). In another embodiment, at least one of the coil units (120A, 120B) may not include a hollow. The coil unit (120) may be placed within the opening (141) of the base (140).

[0240] The aperture module (100) may include a circuit board (190) electrically connected to the coil (120). The circuit board (190) may be disposed on the base (140). The circuit board (190) may be coupled to the base (140) or fixed to the base (140). For example, the circuit board (190) may be disposed on the outer circumferential surface (or outer surface) of the base (140). For example, the circuit board (190) may be coupled to the base (140) by an adhesive.

[0241] Referring to FIGS. 6A, 7A, and 7B, the circuit board (190) may include a first substrate (191A) on which a first coil unit (120A) is disposed, a second substrate (192) on which a second coil unit (120B) is disposed, and a third substrate (193) connecting the first substrate (191) and the second substrate (192). For example, the first substrate (191) and the second substrate (192) may be rigid substrates or flexible substrates, and the third substrate (193) may be a flexible substrate.

[0242] The first substrate (191) may face or overlap with the first opening (141A) of the base (140), and the second substrate (192) may face or overlap with the second opening (141B) of the base (140). The third substrate (193) may be positioned below the protrusion (45) of the base (140) and may be in contact with or coupled with the protrusion (45). The protrusion (45) of the base (140) may serve to support and guide the third substrate (193).

[0243] The first substrate (191) may include terminals (16A, 16B) electrically connected to the first coil unit (120A). The first substrate (191) may include a first portion (191A) (or “first region”) where the first coil unit (120A) is arranged or coupled, and a second portion (191B) (or “second region”) where the terminals (16A, 16B) (or pads) are arranged. For example, one end (or line) (S1) of the first coil unit (120A) may be electrically or conductively coupled to the first terminal (16A), and the other end (or line) (S2) of the first coil unit (120A) may be electrically or conductively coupled to the second terminal (16B).

[0244] One end (S1) of the first coil unit (120A) can be connected to the first terminal (16A) by solder or a conductive adhesive, and the other end (S2) of the first coil unit (120A) can be connected to the second terminal (16B). The first and second terminals (16A, 16B) can be opened or exposed by the first opening (141A) of the base (140).

[0245] The first coil unit (120A) may be placed on or coupled to a first surface of a first portion (191A) of a first substrate (191). The first surface of the first portion (191A) may be a surface facing the first magnet unit (130A). One end (S1) and the other end (S2) of the first coil unit (120A) may extend from a ring-shaped body to the first and second terminals (16A, 16B).

[0246] For example, the first substrate (191) may include a through hole (91A) in which a part of the first coil unit (120A) is disposed. The through hole (91A) may be formed in the first portion (191A) of the first substrate (191). The through hole (91A) may be positioned between the body of the first coil unit (120A) and the first and second terminals (16A, 16B). A part of the first coil unit (120) that connects one end (S1) and the other end (S2) of the first coil unit (120A) and the body of the first coil unit (120A) by the through hole (91A) may avoid spatial interference with the first portion (191A) of the first substrate (191). The first portion (191A) may include at least one through hole (11A, 11B) for coupling with at least one protrusion (43A, 43B) of the base (140).

[0247] The first substrate (191) may include a plurality of terminals (Q1 to Q4) for electrical connection with the outside. For example, the plurality of terminals (Q1 to Q4) may be arranged on the second surface of the second portion (191B). The second surface of the second portion (191B) may be the opposite surface of the first surface of the second portion (191B). The first surface of the second portion (191B) may be the surface facing the outer surface (or outer circumference) of the base (140).

[0248] The first substrate (191) may include a third portion (191C) (or “third region”) connected to the first portion (191A). The third portion (191C) may be positioned on the opposite side of the second portion (191B) with respect to the first portion (191A).

[0249] The second substrate (192) may be arranged to face or overlap the first substrate (191) in the second direction. The second substrate (192) may include terminals (15A, 15B) (or pads) to which the second coil unit (120B) is electrically connected. The second substrate (192) may include a first portion (192A) (or “first region”) in which the second coil unit (120B) is arranged or coupled, and a second portion (192B) (or “second region”) in which the terminals (15A, 15B) (or pads) are arranged. For example, one end (or line of sight) (S3) of the second coil unit (120B) may be electrically or conductively coupled to a third terminal (15A), and the other end (or line) (S4) of the second coil unit (120B) may be electrically or conductively coupled to a fourth terminal (15B).

[0250] One end (S3) of the second coil unit (120B) can be electrically connected to the third terminal (15A) by solder or a conductive adhesive, and the other end (S4) of the second coil unit (120B) can be electrically connected to the fourth terminal (15B). The third and fourth terminals (15A, 15B) can be opened or exposed by the second opening (141B) of the base (140).

[0251] The second coil unit (120B) may be arranged or coupled to the first surface of the first portion (192A) of the second substrate (192). The first surface of the first portion (192A) may be a surface facing the second magnet unit (130B). One end (S3) and the other end (S4) of the second coil unit (120B) may extend from the ring-shaped body to the third and fourth terminals (15A, 15B).

[0252] The second substrate (192) may include a through hole (91B) in which a part of the second coil unit (120B) is disposed. The through hole (91B) may be formed in a first portion (192A) of the second substrate (192). The through hole (91B) may be positioned between the body of the second coil unit (120B) and the third and fourth terminals (15A, 15B). A part of the second coil unit (120B) that connects one end (S3) and the other end (S4) of the second coil unit (120B) to the body of the second coil unit (120B) by the through hole (91B) may avoid spatial interference with the first portion (192A). The first portion (192A) may include at least one through hole (12A, 12B) for coupling with at least one protrusion (43C, 43D) of the base (140).

[0253] The second substrate (192) may include at least one terminal (P1 to P4, see FIG. 11C) for electrical connection to the outside. For example, at least one terminal (P1 to P4) may be arranged on a second surface of a second portion (192B) of the second substrate (192). The second surface of the second portion (192B) may be an opposite surface to the first surface of the second portion (192B). The first surface of the second portion (192B) may be a surface facing the outer surface (or outer circumference) of the base (140).

[0254] The second substrate (192) may include a third portion (192C) connected to the first portion (192A). The third portion (192C) may be positioned on the opposite side of the second portion (192B) with respect to the first portion (192A).

[0255] The third substrate (193) can connect the second portion (191B) of the first substrate (191) and the second portion (192B) of the second substrate (192). For example, the length of the third substrate (193) in the first direction can be smaller than the length of the first substrate (191) in the first direction. The length of the third substrate (193) in the first direction can be smaller than the length of the second substrate (192) in the first direction.

[0256] The circuit board (190) may include an extension portion including terminals (K1 to K4, R1 to R4) for electrical connection with the outside. The extension portion may include a first extension portion (194) extending from a first substrate (191) and a second extension portion (195) extending from a second substrate (192). The first extension portion (194) may extend from a first portion (191A) of the first substrate (191), and the second extension portion (195) may extend from a second portion (192A) of the second substrate (192). For example, the first extension portion (194) may extend from the first substrate (191) and be bent, and the second extension portion (195) may extend from the second substrate (192) and be bent. The first extension portion (194) may include a plurality of terminals (K1 to K4). The second extension (195) may include a plurality of terminals (R1 to R4). In another embodiment, the number of terminals of the extension may be two or more. In another embodiment, the extensions (194, 195) may be omitted.

[0257] The first coil unit (120A) and the second coil unit (120B) may be connected in series. For example, the first coil unit (120A) and the second coil unit (120B) may be connected in series through the circuit board (190). For example, either one of the first and second terminals (16A, 16B) of the first substrate (191) and either one of the third and fourth terminals (15A, 15B) of the second substrate (192) may be electrically connected through the third substrate (193). A driving signal may be supplied to the first and second coil units (120A, 120B) connected in series through the circuit board (190).

[0258] In another embodiment, the first and second coil units (120A, 120B) may be connected in parallel, and a driving signal may be supplied to the parallel-connected coil units (120A, 120B). In another embodiment, the coil units (120A to 120D) may not be connected to each other but may be independent, and individual independent driving signals may be supplied to each of the first and second coil units (120A, 120B) through the circuit board (190). For example, each of the first and second coil units (120A, 120B) may be independently driven by individual driving signals.

[0259] When a driving signal is supplied to the coil (120), the rotor (110) can rotate around the optical axis by the electromagnetic force resulting from the interaction between the magnet (130) and the coil (120). As the rotor (110) rotates, the blades (150A to 150F) linked to the driving shaft (51) (or the blades (150A to 150F) into which the driving shaft (51) is inserted) can rotate within a preset range around the fixed shaft (71) of the base (140).

[0260] As the blades (150A to 150F) rotate, the size of the opening (201) of the blade portion (150) can be changed stepwise or continuously. For example, the opening (201) of the blade portion (150) can be adjusted or changed to have three or more different sizes. For example, the opening (201) of the blade portion (150) can be adjusted or changed to have ten or fewer different sizes. For example, the opening (201) of the blade portion (150) can be adjusted or changed to have three or more and seven or fewer different sizes.

[0261] For example, the steps in which the size of the opening (201) 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 (201) of the blade portion (150) has a maximum size, and the final step may be a step in which the opening (201) of the blade portion (150) has a minimum size. The two or more intermediate steps may be steps in which the opening (201) has different intermediate sizes. The intermediate sizes may be larger than the minimum size and smaller than the maximum size.

[0262] The aperture module (100) may include a position sensor (170) for detecting displacement of the blade portion (150). The position sensor (170) may detect a magnetic field of the magnet (130). Alternatively, the position sensor (170) may detect displacement or position of the magnet (130). Alternatively, the position sensor (170) may detect displacement or position of the drive shaft (51). Alternatively, the position sensor (170) may detect displacement or position of the rotor (110).

[0263] The position sensor (170) may be placed on the base (140). Alternatively, the position sensor (170) may be coupled to or fixed to the base (140). For example, the position sensor (170) may be placed on or coupled to the circuit board (190). The position sensor (170) may be electrically or conductively connected to the circuit board (190). The position sensor (170) may be placed within the first opening (141A) of the base (140).

[0264] The position sensor (170) may be disposed on the first substrate (191). For example, the position sensor (170) may be disposed on the first portion (191A) of the first substrate (191). In another embodiment, the position sensor (170) may be disposed on the second portion (191B) or the third portion (191C) of the first substrate (191). The position sensor (170) may be disposed on the first surface of the first substrate (191) (or the first portion (191A)). The position sensor (170) may be disposed within the hollow portion (9A) of the first coil unit (120A). The position sensor (170) may not overlap the coil (120) (or the coil unit (e.g., 120A)) in the second direction. For example, the position sensor (170) may overlap with the hollow (9A) of the coil unit (120A) in the second direction. In another embodiment, the position sensor (170) may be positioned outside the hollow (9A) of the first coil unit (120A).

[0265] The position sensor (170) may be positioned at least partially opposite or overlapping the first magnet unit (130A) in a second direction that is perpendicular to the first direction. The position sensor (170) may detect the first magnet unit (130A). The position sensor (170) may detect the magnetic field of the first magnet unit (130A).

[0266] The position sensor (170) may include a plurality of sensors that are spaced apart from each other. The position sensor (170) may include a first sensor (170A) and a second sensor (170B) that are spaced apart from each other. In another embodiment, the number of sensors may be two or more. The first sensor (170A) and the second sensor (170B) may be spaced apart from each other in a direction perpendicular to the optical axis. For example, the first sensor (170A) and the second sensor (170B) may be spaced apart from each other in a direction perpendicular to the direction in which the magnet (130) and the coil (120) face each other.

[0267] Each of the first sensor (170A) and the second sensor (170B) may be a Hall sensor. Each of the first sensor (170A) and the second sensor (170B) may include two input terminals and two output terminals. A driving signal may be applied to the input terminals of each of the first sensor (170A) and the second sensor (170B). For example, each of the input terminals of the first sensor (170A) and the second sensor (170B) may be electrically connected to two terminals (e.g., Q1, Q2) of a circuit board (190), and power or a driving signal for driving the first sensor (170A) and the second sensor (170B) may be supplied to the two terminals (Q1, Q2).

[0268] For example, one of the two input terminals of each of the first sensor (170A) and the second sensor (170B) may be electrically connected to one of the two terminals (e.g., Q1, Q2) of the circuit board (190), and the other of the two input terminals of each of the first sensor (170A) and the second sensor (170B) may be electrically connected to the other of the two terminals (e.g., Q1, Q2) of the circuit board (190). For example, the two input terminals of each of the first sensor (170A) and the second sensor (170B) may be connected in parallel with each other.

[0269] The output terminal of the first sensor (170A) and the output terminal of the second sensor (170B) can be electrically connected to two other terminals (e.g., Q3, Q4) of the circuit board (190). For example, the two output terminals of the first sensor (170A) and the two output terminals of the second sensor (170B) can be connected in series, and both ends of the output terminals of the first and second sensors (170A, 170B) connected in series can be electrically connected to two other terminals (e.g., Q3, Q4) of the circuit board (190).

[0270] Two terminals (e.g., P1, P2) of the circuit board (190) can be electrically connected to the coil (120). For example, one end of the coil (120) can be electrically connected to one of the two terminals (e.g., P1, P2), and the other end of the coil (120) can be electrically connected to the other of the two terminals (e.g., P1, P2). Both ends of the series-connected coil units (120A, 120B) can be electrically connected to two terminals (e.g., P1, P2) of the circuit board (190). One end of the series-connected coil units (120A, 120B) can be electrically connected to one of two terminals (e.g., P1, P2) of the circuit board (190), and the other end of the series-connected coil units (120A, 120B) can be electrically connected to the other of the two terminals (e.g., P1, P2) of the circuit board (190).

[0271] The aperture module (100) may include a temperature sensor (175) disposed on a circuit board (190). The temperature sensor (175) may be disposed on either the first substrate (191) or the second substrate (192). The temperature sensor (175) may be disposed or mounted on a first surface of the circuit board (190). For example, the temperature sensor (175) may be disposed on a first portion (192A) of the second substrate (192). The temperature sensor (175) may be disposed within an opening (141B) of the base (140). The temperature sensor (175) may be exposed from the opening (141B) of the base (140). The temperature sensor (175) may include a temperature variable resistor. The temperature sensor (175) may be a thermistor.

[0272] Both ends of the temperature sensor (175) can be electrically connected to two terminals (e.g., P3, P4) of the circuit board (190). For example, one end of the temperature sensor (175) can be electrically connected to one of the two terminals (e.g., P3, P4) of the circuit board (190), and the other end of the temperature sensor (175) can be electrically connected to the other of the two terminals (e.g., P3, P4) of the circuit board (190). The temperature of the aperture module (100) can be measured using signals output from the terminals (e.g., P3, P4) of the circuit board (190).

[0273] The terminals (K1 to K4) of the circuit board (190) may be electrically connected to a corresponding one of the terminals (Q1 to Q4) of the circuit board (190). In addition, the terminals (R1 to R4) of the circuit board (190) may be electrically connected to a corresponding one of the terminals (P1 to P4) of the circuit board (190). The terminals (K1 to K4, R1 to R4) may be terminals for testing. To facilitate testing, the circuit board (190) may include extensions (194, 195) and terminals (K1 to K4, R1 to R4).

[0274] In other embodiments, the extensions (194, 195) and terminals (K1 to K4, R1 to R4) may be removed or omitted from the final product. In yet other embodiments, the terminals (Q1 to Q4, P1 to P4) may be omitted, and the terminals (K1 to K4, R1 to R4) of the extensions (194, 195) may replace the roles of the omitted terminals (Q1 to Q4, P1 to P4).

[0275] The aperture module (100) may include a reinforcing member (70) disposed on at least a portion of the circuit board (190). The reinforcing member (70) may prevent the circuit board (190) from being damaged, deformed, or broken due to impact or external force. For example, the reinforcing member (70) may include at least one of a metal material or an injection-molded material (e.g., plastic or resin).

[0276] The reinforcing member (70) may include at least one reinforcing member (70A, 70B) disposed on the first substrate (191) and at least one reinforcing member (70C, 70D) disposed on the second substrate (192). In another embodiment, at least one of the reinforcing members (70A to 70D) may be omitted. The reinforcing member (70) may be disposed on at least one of the first portion (191A) and the second portion (191B) of the first substrate (191) and the first portion (192A) and the second portion (192B) of the second substrate (192).

[0277] A reinforcing member (70A) may be disposed on a first portion (191A) of a first substrate (191). The reinforcing member (70A) may be disposed on a second surface of the first portion (191A). The second surface of the first portion (191A) may be an opposite surface of the first surface of the first portion (191A). At least a portion of the reinforcing member (70A) may overlap with or block a through hole (91A) of the base (140). The reinforcing member (70A) may include a hole (13A) corresponding to a protrusion (43A, 43B) of the base (140), and the hole (13A) may be coupled with the protrusion (43A, 43B) of the base (140).

[0278] The reinforcing member (70B) may be disposed on the third portion (191C) of the first substrate (191). The reinforcing member (70B) may be disposed on the second surface of the third portion (191C). The second surface of the third portion (191C) may be the opposite surface of the first surface of the third portion (191C) of the first substrate (191). The first surface of the third portion (191C) may be the surface facing or in contact with the outer surface (or outer surface) of the base (140).

[0279] The reinforcing member (70C) may be disposed on the first portion (192A) of the second substrate (192). The reinforcing member (70C) may be disposed on the second surface of the first portion (192A) of the second substrate (192). The second surface of the first portion (192A) may be an opposite surface to the first surface of the first portion (192A) of the second substrate (192). At least a portion of the reinforcing member (70C) may overlap or block the through hole (91B) of the base (140). The reinforcing member (70C) may include a hole (13B) corresponding to the protrusions (43C, 43D) of the base (140), and the hole (13B) may be coupled with the protrusions (43C, 43D) of the base (140).

[0280] The reinforcing member (70D) may be disposed on the third portion (192C) of the second substrate (192). The reinforcing member (70D) may be disposed on the second surface of the third portion (192C) of the second substrate (192). The second surface of the third portion (192C) may be an opposite surface to the first surface of the third portion (192C) of the second substrate (192). The first surface of the third portion (192C) of the second substrate (192) may be a surface that faces or contacts the outer peripheral surface (or outer surface) of the base (140).

[0281] The reinforcing member (70A) may face or overlap the first coil unit (120A) in the second direction, and the reinforcing member (70C) may face or overlap the second coil unit (120B) in the second direction. In another embodiment, the reinforcing members (70A, 70B) may be made of a metal material and may perform a yoke function to enhance the electromagnetic force between the coil (120) and the magnet (130). Each of the reinforcing members (70A) and (70B) may be expressed as a “yoke.”

[0282] In another embodiment, the reinforcing member (70) 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 (120), position sensor (170), or temperature sensor (175)). In this case, the reinforcing member (70) may be expressed as a “heat dissipation member” or “heat dissipation body.”

[0283] A cloud member (40) can be placed between the rotor (110) and the base (140). The cloud member (40) can reduce friction between the rotor (110) and the base (140) by performing a rolling motion or sliding motion between the base (140) and the rotor (110), thereby facilitating rotation or movement of the rotor (110) and reducing the driving current or power consumption required for rotation or movement of the rotor (110).

[0284] At least a portion of the cloud member (40) may be in contact with the base (140). Additionally, at least another portion of the cloud member (40) may be in contact with the rotor (110).

[0285] The cloud member (40) may be expressed as a “ball,” “ball member,” or “ball bearing.” For example, the cloud member (40) may be made of, but is not limited to, a metal material, ceramic, plastic, or resin material. The cloud member (40) may have a circular shape and may have a diameter sufficient to support the rotation or movement of the rotor (110). For example, the cloud member (40) may include a plurality of ball members (B1 to B4) or a plurality of balls. In FIG. 7A, the cloud member (40) includes four ball members (B1 to B4), but in other embodiments, there may be two, three, or five or more ball members. At least a portion of the cloud member (40) may be placed within the receiving portion (33) of the base (140).

[0286] FIG. 14a shows a magnetic body (95) placed on a base (140), FIG. 14b shows a bottom view of FIG. 14a, FIG. 14c is a bottom view of a rotor (110), a magnet (130), a magnetic body (95), and a cloud member (40), FIG. 15a is a first perspective view of a rotor (110), a magnet (130), and a magnetic body (95), and FIG. 15b is a second perspective view of a rotor (110), a magnet (130), and a magnetic body (95).

[0287] Referring to FIGS. 14A to 15B, the aperture module (100) may further include a magnetic body (95) disposed on the base (140). The magnetic body (95) may be coupled to the base (140) or fixed to the base (140). In FIGS. 14A and 14B, the magnetic body (95) may be coupled to the base (140) by an insert injection method. The magnetic body (95) may be inserted into the base (140).

[0288] When the magnetic body (95) and the base (140) are combined by the insert injection method, at least a portion (92A, 92B, 93A, 93B) of the magnetic body (95) may be positioned to be buried inside the base (140). For example, one end (or terminal) of the magnetic body (95) may be exposed from the base (140). For example, at least one of the ends (e.g., one end and the other end) of the magnetic body (95) may be exposed from the base (140).

[0289] The exposed portion of the magnetic body (95) may be the portion remaining after being cut off after the insert injection process. In another embodiment, the magnetic body (95) may be bonded or attached to the base (140) by an adhesive or a fastener.

[0290] The magnetic body (95) may be positioned at the lower portion of the base (140). For example, the magnetic body (95) may be positioned closer to the lower surface of the base (140) than the rotor (110). For example, the magnetic body (95) may be positioned closer to the lower surface of the base (140) than the upper surface of the base (140). For example, the magnetic body (95) may be positioned lower than the magnet (130) in the direction of the optical axis.

[0291] For example, the magnetic body (95) may be positioned below the coil (120). For example, the magnetic body (95) may be spaced apart from the coil (120). For example, in the first direction, the magnetic body (95) may include a portion that overlaps the coil (120). Also, for example, in the first direction, the magnetic body (95) may include a portion that does not overlap the coil (120).

[0292] The magnetic body (95) can exert an attractive force on the magnet (130). For example, an attractive force can be exerted between the magnetic body (95) and the magnet (130) in a direction in which the magnetic body (95) and the magnet (130) face each other. The attractive force exerted between the magnetic body (95) and the magnet (130) can also be expressed as “holding force,” “attraction force,” or “holding force.”

[0293] The magnetic body (95) may be made of a material that is attracted to a magnet. For example, the magnetic body (95) may be made of a metallic material. Or, for example, the magnetic body (95) may be made of a magnetic metallic material. Or, for example, the magnetic body (95) may be a magnet. The magnetic body (95) may also be expressed as a “yoke,” a “magnetically conductive member,” a “magnetic member,” a “magnetic plate,” a “magnetic plate,” or a “magnetic yoke.”

[0294] The magnetic body (95) may be positioned lower than the magnet (130). For example, the magnetic body (95) may be positioned lower than the lower surface of the magnet. The magnetic body (95) may not overlap the magnet (130) in the first direction (or the optical axis direction). The magnet (130) and the coil (120) may be arranged to face each other in a direction perpendicular to the optical axis direction (e.g., “second direction”), and the magnet (130) may be arranged on the rotor (110), and the coil (120) and the magnetic body (95) may be arranged on the base (140). To avoid spatial interference between the magnetic body (95) and the coil (120), the magnetic body (95) may be positioned lower than the coil (120). At least a portion of the magnetic body (95) may overlap the coil (120) in the optical axis direction. Additionally, at least another portion of the magnetic body (95) may not overlap with the coil (120) in the optical axis direction. For example, the length of a portion of the magnetic body (95) that does not overlap with the coil (120) may be greater than the length of another portion of the magnetic body (95) that overlaps with the coil (120).

[0295] Referring to FIG. 14b, when viewed in the first direction or from below, the magnetic body (95) may be positioned outside the magnet (130). For example, when viewed in the first direction or from below, the magnetic body (95) may be positioned outside the outer surface of the magnet (130).

[0296] In another embodiment, when viewed in the first direction or from below, the magnetic body (95) may be positioned inside the magnet (130). In another embodiment, the magnetic body (95) may include a portion that overlaps the magnet (130) in the first direction. In another embodiment, at least a portion of the magnetic body (95) may overlap the magnet (130) in the first direction.

[0297] The magnetic body (95) may include a first magnetic body (95A) corresponding to or opposite the first magnet unit (130A) and a second magnetic body (95B) corresponding to or opposite the second magnet unit (130B). The first magnetic body (95A) and the second magnetic body (95B) may be spaced apart from each other. In another embodiment, the first magnetic body (95A) and the second magnetic body (95B) may be connected.

[0298] The first magnetic body (95A) may include a curved shape formed along the shape of the lower surface or bottom of the base (140). For example, the first magnetic body (95A) may be a plate shape curved in the circumferential direction of the base (140). For example, the first magnetic body (95A) may be a plate shape curved in the circumferential direction of the base (140).

[0299] Referring to FIGS. 12E and 13C, at least a portion of the first magnetic body (95A) may face or overlap with the first coil unit (120A) in the first direction. At least a portion of the first magnetic body (95A) may also overlap with the position sensor (170) in the first direction. Additionally, for example, at least another portion of the magnetic body (95) may not overlap with the position sensor (170).

[0300] The description of the shape of the first magnetic body (95A) can be applied or analogized to the second magnetic body (95B). For example, the second magnetic body (95B) can have a shape that is symmetrical with respect to the opening (501) of the base (140) or the optical axis with respect to the first magnetic body (95A). This is to prevent the rotor (110) from tilting by making the attractive force between the first magnet unit (130A) and the first magnetic body (95A) and the attractive force between the second magnet unit (130B) and the second magnetic body (95B) the same.

[0301] Referring to FIGS. 14b and 14c, the length (K11) of the first magnetic body (95A) may be greater than the length (M1) of the first magnet unit (130A). For example, K11 may be the length of the first magnetic body (95A) in the circumferential direction of the base (140). For example, K11 may be the length from one end (first end) (92C) of the first magnetic body (95A) to the other end (second end) (92D) of the first magnetic body (95A). For example, K11 may be the shortest length from one end (first end) (92C) of the first magnetic body (95A) to the other end (second end) (92D) of the first magnetic body (95A).

[0302] In another embodiment, K11 may be the length from one end (92A) of the first magnetic body (95A) to the other end (92B). In this case, the one end (92A) may be a portion of the first magnetic body (92A) exposed from the outer surface of the base (140), and the other end (92B) may be another portion of the first magnetic body (95A) exposed from the outer surface of the base (140).

[0303] For example, M1 may be the length of the first magnet unit (130A) in the circumferential direction of the rotor (110). For example, M1 may be the length of the outer surface of the first magnet unit (130A). For example, M1 may be the distance between one end and the other end of the first magnet unit (130A) facing each other in the circumferential direction of the rotor (110). In another embodiment, M1 may be the shortest distance between one end and the other end of the first magnet unit (130A).

[0304] Since K11 is larger than M1, the area where the attractive force between the first magnet unit (130A) and the first magnetic body (95A) affects the rotor (110) can increase, thereby allowing the rotor (110) to receive a stable holding force. As a result, the blade portion (150) can move stably and accurately, and the size of the opening (201) of the blade portion (150) can be accurately and stably varied.

[0305] For example, the length (K11) of the magnetic body (95) may be at least twice the length (M1) of the magnet unit (130A or 130B). For example, the length (K11) of the magnetic body (95) may be at least twice and at most ten times the length (M1) of the magnet unit (130A or 130B). For example, the length (K11) of the magnetic body (95) may be at least three times and at most five times the length (M1) of the magnet unit (130A or 130B).

[0306] If the length (K11) of the magnetic body (95) is smaller than or not sufficiently larger than the length (M1) of the magnet unit (130A or 130B), as the magnet unit (130A or 130B) rotates or moves, the difference in force between the left part of the magnetic body (95) and the right part of the magnetic body (95) with respect to the magnet unit (130A, 130B) may become large. The torque in the circumferential direction generated due to this difference in force may cause the rotor (110) to be twisted or may have a negative effect on the rotation of the rotor (110).

[0307] In the embodiment, since the length of the magnetic body (95) is greater than the length of the magnet (130), a uniform suction force or attractive force can be maintained throughout the entire rotation section (or rotation range) of the rotor (110), thereby enabling stable support for the rotor (110). In addition, in the embodiment, since the length of the magnetic body (95) is sufficiently greater than twice the length of the magnet (130), the difference in the force applied to the magnet units (130A, 130B) between the left part of the magnetic body (95) and the right part of the magnetic body (95) based on the magnet units (130A, 130B) may be small, or the resultant force may be nearly 0. Therefore, the torque generated on the rotor in the circumferential direction of the rotor (110) may be minimized, and the rotor (110) may be stably supported.

[0308] The length (K11) of the first magnetic body (95A) may be greater than the size (or distance) of the rotation range (622) of the first magnet unit (130A) (or the first extension (110B1)). The rotation range (622) may be a distance from a first position of the first magnet unit (130A) (or the first extension (119B1)) to a second position of the first magnet unit (130A) (or the first extension (110B1)). The first position may be a position at which the first magnet unit (130A) (or the first extension (110B1)) moves the farthest in the counterclockwise direction (or clockwise direction) or rotates the most. The second position may be the position where the first magnet unit (130A) (or the first extension (110B1)) has moved the farthest in the clockwise (or counterclockwise) direction or has rotated the most.

[0309] Since the length of the first magnetic body (95A) is greater than the distance of the rotation range (622), the rotor (110) can stably receive the attractive force between the first magnetic body (95A) and the first magnet unit (130A) throughout the range in which the rotor (110) rotates. As a result, the rotor (110) can stably receive a holding force throughout the entire range in which the rotor (110) rotates. As a result, the blade unit (150) can move stably and accurately, and the size of the opening (201) of the blade unit (150) can be accurately and stably varied.

[0310] Referring to FIG. 14c, the first magnetic body (95A) may include a first portion (97A) adjacent to the first magnet unit (130A), a second portion (97B) connecting the first portion (97A) and the first end (92A), and a third portion (97C) connecting the first portion (97A) and the second end (92B).

[0311] The first portion (97A) of the first magnetic body (95A) may include a curved or bent region. The first portion (97A) may be positioned closer to the first magnet unit (130A) than the first end (92A). The second portion (97B) may be positioned closer to the first end (92A) than the first magnet unit (130A). The third portion (97C) may be positioned closer to the first end (92A) than the first magnet unit (130A).

[0312] The first portion (97A) may include a first region (81A) having a width (W1) greater than the width (W2) of the second portion (97B) or the width (W4) of the third portion (97C) (W1>W2). For example, W2 may be equal to W4. In other embodiments, W2 and W4 may be different.

[0313] The first portion (97A) may include a second portion (81B) having a width (W3) smaller than the width (W1) of the first portion (81A). The first portion (81A) of the first portion (97A) may be positioned between the second portion (97B) and the second portion (81B) of the first portion (97A). The first portion (97A) may include a second portion (81B) having a width (W3) smaller than the width (W1) of the first portion (81A). The first portion (81A) of the first portion (97A) may be positioned between the second portion (97B) and the second portion (81B) of the first portion (97A). The first portion (97A) may include a third region (81C) having a width (W5) greater than the width (W2) of the third portion (97C) or the width (W4) of the third portion (97C) (W1>W4). The third region (81C) may be located between the second region (81B) and the third portion (97C). The width (W5) of the third region (81C) may be greater than the width (W3) of the second region (81B) (W5>W3). For example, W1 and W5 may be the same. In other embodiments, W1 and W5 may be different. The second region (81B) of the first portion (97A) may be an escape region to avoid spatial interference with the reinforcing member (70A). For example, the outer surface of the second region (81B) of the first portion (97A) may be a straight line.

[0314] In another embodiment, the width of the second region (81B) of the first portion (97A) may be equal to the width of the first region (81A) or the width of the third region (91C).

[0315] In the embodiment, since the widths (W1, W5) of the first and third regions (81A, 81C) of the first portion (97A) are larger than the width (W2) of the second portion (97B) and the width (W4) of the third portion (97C), the attractive force between the magnet (130) and the first magnetic body (95A) can be increased, and the rotor (110) can be stably supported.

[0316] The descriptions of the first coil unit (120A), the first magnet unit (130A), the first magnetic body (95A), and the rotation range (622) in FIGS. 12d, 12e, 14b, and 14c can be applied or analogized to the second coil unit (120B), the second magnet unit (130B), the second magnetic body (95B), and the rotation range (624).

[0317] Additionally, the description of the correlation between the first coil unit (120A), the first magnet unit (130A), and the first magnetic body (95A) in FIGS. 12d, 12e, 14b, and 14c can be applied or analogized to the correlation between the second coil unit (120B), the second magnet unit (130B), and the second magnetic body (95B).

[0318] Since the magnet (130) is placed on the rotor (110) and the magnetic body (95) is placed on the base (140), the rotor (110) can be pulled in a downward direction or toward the base (140) by the attractive force acting between the magnetic body (95) and the magnet (130). The rotor (110) can be pulled in a downward direction or toward the base (140) by the attractive force (F1) between the first magnet unit (130A) and the first magnetic body (95A) and the attractive force (F2) between the second magnet unit (130B) and the second magnetic body (95B).

[0319] The rotor (110) and the base (140) can pressurize the cloud member (40) by the attractive force (F1, F2) between the magnetic body (95) and the magnet (130). For example, the support (47) of the rotor (110) and the receiving portion (33) of the base (140) can pressurize the cloud member (40) by the attractive force between the magnetic body (95) and the magnet (130). Since the rotor (110) and the base (140) pressurize the cloud member (40), the rotor (110) can be stably supported by the cloud member (40).

[0320] The magnetic body (95) and the magnet (130) may be a “pressure unit” or a “pressure member.” By means of this pressurization unit, when the rotor (110) rotates or moves, contact can be maintained between the rotor (110) and the rolling member (40) and between the rolling member (40) and the base (140). By the attractive force between the magnet (130) and the magnetic body (94), the rolling member (40) can stably support the rotor (110) with respect to the base (140).

[0321] Referring to FIGS. 11A and 11B, as the rotor (110) moves or rotates, the drive shafts (51A to 51F) of the rotor (110) fitted into the holes (3A to 3D) of the blades (150A to 150F) can move. As the drive shafts (51A to 51F) of the rotor (110) move, the blades (150A to 150F) can be folded toward the optical axis, or conversely, the blades (150A to 150F) can be spread outward.

[0322] Fig. 11a illustrates an opening (201A) of a blade portion (150) when the blade portion (150) is fully opened. The size (e.g., area or diameter) of the opening (201A) may be larger than the size (e.g., area or diameter) of the opening (205) of the support plate (160). The opening (201A) may expose or open the entire opening (205) of the support plate (160).

[0323] FIG. 11B illustrates the opening (201B) of the blade portion (150) when the blade portion (150) is fully closed. The size (e.g., area or diameter) of the opening (201B) may be smaller than the size (e.g., area or diameter) of the opening (205) of the support plate (160). The opening (201B) may expose or open a portion of the opening (205) of the support plate (160). In other embodiments, the blade portion (150) may be completely closed so that no opening is formed, and may close the entire opening (205) of the support plate (160).

[0324] The aperture module (100) may include a magnetic body (86) disposed on the base (140).

[0325] Fig. 16 is a cross-sectional view of a rotor (110), a magnet (130), a base (140), and a magnetic body (86). Referring to Figs. 7a and 16, the magnetic body (86) may be disposed between the circuit board (190) and the base (140). For example, the magnetic body (86) may be disposed between the third portion (191C) of the first substrate (191) and the outer peripheral surface (or outer surface) of the base (140). The magnetic body (86) may be disposed within the receiving portion (44) of the base (140).

[0326] The magnetic body (86) may be positioned higher than the magnetic body (95). For example, the magnetic body (86) may be positioned lower than the top or upper surface of the coil (120) (e.g., the first coil unit (120A)). Alternatively, the magnetic body (86) may be positioned higher than the bottom or lower surface of the coil (120) (e.g., the first coil unit (120A)). The magnetic body (86) may be positioned adjacent to one end of the first magnet unit (130A). The magnetic body (86) may be positioned outside the rotation range (622) of the magnet unit (130A, 130B) (or the extension (110B1, 110B2)).

[0327] The magnetic body (86) may be formed of a material that is attracted to a magnet. For example, the magnetic body (86) may be formed of a metallic material. Or, for example, the magnetic body (86) may be formed of a magnetic metallic material. Or, for example, the magnetic body (86) may be a magnet. The magnetic body (86) may also be expressed as a “yoke,” a “magnetically conductive member,” a “magnetic member,” a “magnetic plate,” a “magnetic plate,” or a “magnetic yoke.”

[0328] The magnetic body (86) may include a first magnetic body (86A) positioned adjacent to one end of the first magnet unit (130A). For example, the first magnetic body (86A) may be positioned in an area of ​​the base (140) adjacent to the position of the first magnet unit (130A) when the opening (201) of the blade portion (150) is fully open. For example, the first magnetic body (86A) may be positioned closer to the position of the first magnet unit (130A) when the opening (201) of the blade portion (150) is fully open than to the position of the first magnet unit (130A) when the opening (201) of the blade portion (150) is fully closed. The first magnetic body (86A) may be positioned closer to the first magnet unit (130A) than to the second magnet unit (130B).

[0329] The magnetic body (86) may further include a second magnetic body (86B) arranged adjacent to one end of the second magnet unit (130B). For example, the second magnetic body (86B) may be arranged in an area of ​​the base (140) adjacent to the position of the second magnet unit (130B) when the opening (201) of the blade portion (150) is fully open. For example, the second magnetic body (86B) may be positioned closer to the position of the second magnet unit (130B) when the opening (201) of the blade portion (150) is fully open than to the position of the second magnet unit (130B) when the opening (201) of the blade portion (150) is fully closed. The second magnetic body (86B) may be positioned closer to the second magnet unit (130B) than to the first magnet unit (130A).

[0330] The first magnetic body (86A) can have an attractive force (F3) applied to the first magnet unit (130A), and the second magnetic body (86B) can have an attractive force (F3) applied to the second magnet unit (130B). For example, an attractive force can be applied in the circumferential direction of the rotor (110) between the magnetic bodies (86A, 86B) and the magnet units (130A, 130B). The first magnet unit (130A) can be pulled toward the first magnetic body (86A) by the attractive force (F3), and the second magnet unit (130B) can be pulled toward the second magnetic body (86B) by the attractive force (F4), and thus the rotor (110) can be pulled toward the base (140) where the magnetic bodies (86A, 86B) are positioned.

[0331] The magnetic body (86) can serve to keep the opening (201) of the blade portion (150) in the maximum open state when no driving signal is supplied to the coil (120) and thus no electromagnetic force is generated between the coil (120) and the magnet. This is to minimize the exposure of the blade portion (150) to the outside by allowing the opening (201) of the blade portion (150) to be maximum open when no electromagnetic force is generated between the coil (120) and the magnet.

[0332] In another embodiment, the magnetic bodies (86A, 86B) may be positioned closer to the position of the first magnet unit (130A) (or the second magnet unit (130B)) when the opening (201) of the blade portion (150) is maximally closed than the position of the first magnet unit (130A) (or the second magnet unit (130B)) when the opening (201) of the blade portion (150) is maximally open. In another embodiment, the magnetic bodies (86A, 86B) may also serve to maintain the opening (201) of the blade portion (150) in the maximally closed state when a driving signal is not supplied to the coil (120) and thus no electromagnetic force is generated between the coil (120) and the magnet.

[0333] In Fig. 6a, the magnetic body (86) may have a T-shape when viewed in the circumferential direction of the base (140). In other embodiments, the magnetic body (86) may be polygonal (e.g., triangular, square) or circular.

[0334] Referring to FIGS. 13A to 13C, the lens module (400) may include a lens barrel (510) and a lens unit (30) disposed within the lens barrel (510). The lens unit (30) may include a plurality of lenses disposed or stacked in the optical axis direction.

[0335] The lens barrel (510) may include an upper portion (511), a lower portion (512) positioned below the upper portion (511), and a middle portion (513) positioned between the upper portion (511) and the lower portion (512) and connecting the upper portion (511) and the lower portion (512). In other embodiments, the middle portion (513) may be omitted.

[0336] The diameter (or length in a direction perpendicular to the optical axis) of the upper portion (511) may be smaller than the diameter (or length in a direction perpendicular to the optical axis) of the lower portion (512). The middle portion (513) may include a portion in which the diameter decreases in a direction from the upper portion (512) toward the lower portion (512). For example, the middle portion (513) may have a diameter that gradually decreases in a direction from the upper portion (512) toward the lower portion (512). The protrusions (521 to 524) may be arranged on the upper surface of the lower portion (512).

[0337] The upper portion (512) of the lens barrel (510) may be positioned within the base (140) of the aperture module (100). At least a portion of the upper portion (512) may be positioned within the opening (401) of the rotor (110). In addition, at least a portion of the middle portion (513) of the lens barrel (510) may be positioned within the base (140) of the aperture module (100). The base (140) of the aperture module (100) may be coupled with the lower portion (513) of the lens barrel (510).

[0338] The upper end (511) of the lens barrel (510) may face or overlap with the magnet (130) in a direction perpendicular to the optical axis direction. The upper end (511) of the lens barrel (510) may face or overlap with the coil (120) in a direction perpendicular to the optical axis direction. The upper end (511) of the lens barrel (510) may face or overlap with the position sensor (170) in a direction perpendicular to the optical axis direction. At least a portion of the magnet (130) and at least a portion of the coil (120) may face or overlap with the middle portion (513) of the lens barrel (510) in a direction perpendicular to the optical axis direction.

[0339] In the first direction, the magnet (130) may face or overlap with the middle portion (513). In another embodiment, the magnet (130) may face or overlap with the lower portion (512) in the first direction. In the first direction, the coil (120) may face or overlap with the middle portion (513) or the lower portion (512). In the first direction, the magnet (130) and the coil (120) may not overlap with the upper portion (511) of the lens barrel (510).

[0340] In addition, in the embodiment, the coil (120) and the magnet (130) are arranged so that they can overlap with the upper part (511) and the middle part (513) of the lens barrel (510) in the direction perpendicular to the optical axis and do not overlap with the upper part (511) in the direction of the optical axis, so that the size of the camera device (200) in the direction perpendicular to the optical axis can be prevented from increasing.

[0341] In the aperture module (100) according to the embodiment, the rotor (110) and the base (140) are arranged vertically, and a cloud member (40) is arranged between the rotor (110) and the base (140), so that the assembly between the rotor (110) and the base (140) can be simplified and simplified. As the assembly is simplified and simplified in this way, the structure of the rotor (110) and the base (140) can be simplified, and thus the assembly deviation can be reduced.

[0342] A groove (2A, 2B) is provided in the extension portion (110B) of the rotor (110), and a protrusion (64) of the base (140) corresponding to the groove (2A, 2B) can serve as a stopper to mechanically stop the rotor (110). The rotation range of the rotor (110) can be increased by the groove (2A, 2B) of the extension portion (110B), and the range of change in the size of the opening (201) of the blade portion (150) can be increased.

[0343] If the rotor of the aperture module is not stably supported and the rotor tilts when it rotates, the center of the aperture of the aperture module may shift with respect to the center of the lens unit (or optical axis), or eccentricity may occur between the center of the lens unit (or optical axis) and the center of the aperture of the aperture module.

[0344] In the embodiment, by arranging the cloud member (40) within the receiving portion (33) formed on the upper surface of the base (140), the cloud member (40) can be stably and easily mounted on the base (140). In addition, by the attractive force between the magnetic body (95) and the magnet (130) arranged on the base (140), the rotor (110) can press the cloud member (40) from the upper side to the lower side, and the base (140) can press the cloud member (40) from the lower side to the upper side, thereby stably contacting the rotor (110) with the cloud member (40). Accordingly, when the rotor (110) moves or rotates, the rotor (110) can stably contact the cloud member (40), thereby stably varying the opening (201) of the blade portion (150), and preventing the center of the opening of the aperture module from being misaligned with respect to the center (or optical axis) of the lens portion. Additionally, it is possible to suppress the occurrence of eccentricity between the center of the lens unit (or optical axis) and the center of the aperture of the aperture module.

[0345] Since the length of the magnetic body (95) is greater than the length of the magnet (130), the rotor (110) can be stably supported. In addition, since the magnet (130) and the magnetic body (95) are arranged so that they do not overlap in the optical axis direction and at least a portion of the coil (120) and the magnetic body (95) overlap in the optical axis direction, spatial interference between the magnetic body (95) and the coil (120) can be avoided, the length of the magnetic body (95) can be designed to be long, and the attractive force or holding force between the magnetic body (95) and the magnet (130) can be increased.

[0346] In addition, by forming the outer surface (73B) of the support portion (47) of the rotor (110) that contacts the cloud member (40) into an inclined surface, the support portion (47) can stably contact the cloud member (40) located in the receiving portion (33) of the base (140), and the rotor (110) can be stably supported.

[0347] Fig. 17 shows the arrangement of the first magnet unit (130A), the first coil unit (120A), and the first and second sensors (170A, 170B) of the position sensor (170), and Fig. 18 shows the separation distance (D1) between the first sensor (170A) and the second sensor (170B).

[0348] Referring to FIG. 17, the first sensor (170A) and the second sensor (170B) may be arranged spaced apart from each other in a direction perpendicular to the optical axis (e.g., in the y-axis direction) on a first surface of a circuit board (190) (e.g., a first substrate (191)). For example, the first sensor (170A) and the second sensor (170B) may be arranged spaced apart from each other in a direction parallel to the first surface of the first substrate (191). The first surface of the first substrate (191) may be a surface facing the first magnet unit (130A) in the x-axis direction. The first sensor (170A) and the second sensor (170B) may be arranged within the hollow (9A) of the first coil unit (120A).

[0349] Fig. 17 shows the center position of the rotor (110). The center position of the rotor (110) may be the position of the rotor (110) when the angle at which the rotor (110) rotates or moves with respect to the center line (601) (or reference line) is 0 degrees. Alternatively, the center line (601) may be a straight line passing through the center (101) of the opening and the midpoint between the first sensor (170A) and the second sensor (170B). Alternatively, the center line (601) may be perpendicular to the optical axis and may be a straight line passing through the optical axis and the midpoint between the first sensor (170A) and the second sensor (170B).

[0350] For example, the angle at which the rotor (110) (or magnet (130)) rotates clockwise and the angle at which the rotor rotates counterclockwise with respect to the center line (601) may be the same. For example, the intermediate position between the first sensor (170A) and the second sensor (170B) may be the center of the hollow of the first coil unit (120A). In addition, the center line (601) at the central position may pass through the center of the first magnet unit (130A). At the central position, the center line (601) may overlap the partition wall (6C) of the first magnet unit (130A).

[0351] At the central position of the rotor (110), the center of the first magnet unit (130A) or the partition wall (6C) of the first magnet unit (130A) may overlap or be aligned with the space between the first sensor (170A) and the second sensor (170B). Alternatively, at the central position of the rotor (110), the partition wall (6C) of the first magnet unit (130A) may be aligned with or overlapped at a middle position between the first sensor (170A) and the second sensor (170B).

[0352] At the central position of the rotor (110), the first sensor (170A) may face or overlap the first magnet unit (6A), and the second sensor (170B) may face or overlap the second magnet unit (6B) in a direction perpendicular to the optical axis (x-axis direction) or in a direction in which the first coil unit (120A) and the first magnet unit (130A) face each other. At the central position of the rotor (110), the first sensor (170A) and the second sensor (170B) may face each other with different polarities of the first magnet unit (130A).

[0353] The separation distance (D1) between the first sensor (170A) and the second sensor (170B) may be smaller than the length (D3) of the first magnet portion (6A). D3 may be the length of the first magnet portion (6A) in the circumferential direction of the rotor (110). In addition, D1 may be smaller than the length of the N pole or the S pole of the first magnet unit (130A). The length (D3) of the first magnet portion (6A) and the length of the second magnet portion (6B) may be the same. The separation distance (D1) between the first sensor (170A) and the second sensor (170B) may be larger than or equal to the length (D2) of the partition wall (6C) of the first magnet unit (130A). D2 may be the length of the inner or outer surface of the partition wall (6C).

[0354] The separation distance (D1) between the first sensor (170A) and the second sensor (170B) may be greater than the distance (D4, D5) between the first magnet unit (130A) and the first sensor (170A) (or the second sensor (170B)). Since D1>D4 and D1>D5, the linearity of the output signal of the position sensor (170) may be improved. In another embodiment, D1 may be equal to D4. In yet another embodiment, D1 may be equal to D5.

[0355] The first magnet unit (130A) may include a convex curved surface in a direction toward the first coil unit (120A). The first magnet unit (130A) may include a convex curved surface in the center. The first magnet unit (130A) may include an outer surface facing the first coil unit (120A) and an inner surface opposite the outer surface. The outer surface of the first magnet unit (130A) may include a convex curved surface in a direction toward the first coil unit (120A). In addition, the inner surface of the first magnet unit (130A) may include a convex curved surface in a direction toward the first coil unit (120A). The first sensor (170A) and the second sensor (170B) may face the convex curved surface of the first magnet unit (130A). For example, the first sensor (170A) and the second sensor (170B) may face or overlap the convex surface of the first magnet unit (130A) in a direction in which the first magnet unit (130A) and the first coil unit (120A) face each other (e.g., in the x-axis direction).

[0356] Since the outer surface of the first magnet unit (130A) has a convex curved shape, the distance (D4) between one end (1A) of the first sensor (170A) and the outer surface of the first magnet unit (130A) and the distance (D5) between the other end (1B) of the first sensor (170A) and the outer surface of the first magnet unit (130A) are different from each other. For example, D4 ​​may be greater than D5. The center line (601) may be located closer to the other end (1B) of the first sensor (170A) than to the one end (1A) of the first sensor (170A).

[0357] One end (1A) of the first sensor (170A) and the other end (1B) of the first sensor (170A) may be positioned opposite to each other in a direction (e.g., the y-axis direction) perpendicular to the direction in which the first coil unit (120A) and the first magnet unit (130A) face each other. The second sensor (170B) may be positioned closer to the second end (1B) of the first sensor (170A) than to the first end (1A) of the first sensor (170A).

[0358] The separation distance (D1) between the first sensor (170A) and the second sensor (170B) may be greater than the separation distance between the first coil unit (120A) and the first sensor (170A). The separation distance (D1) between the first sensor (170A) and the second sensor (170B) may be greater than the separation distance between the first coil unit (120A) and the second sensor (170B). This may improve the linearity of the output signal of the position sensor (170).

[0359] The description of one end (1A) of the first sensor (170A), the other end (1B) of the first sensor (170A), and the outer surface (or curved surface) of the first magnet unit (130A) can be applied or analogized to one end (1C) of the second sensor (170B) and the other end (1D) of the second sensor (170B).

[0360] The distance (D6) between the center line (601) and the first sensor (170A) may be greater than or equal to 0.1 [mm] and less than or equal to 1 [mm]. If D6 is less than 0.1 [mm], the linearity improvement of the output of the position sensor (170) may be minimal. On the other hand, if D6 exceeds 1 [mm], spatial interference with the first coil unit (120A) may occur.

[0361] In other embodiments, 0.1[mm] ≤ D6 ≤ 0.5[mm] may be applicable. For example, D6 may be less than or equal to D5.

[0362] The distance (D7) from one end (1A) of the first sensor (170A) to one end (1C) of the second sensor (170B) may be smaller than the length (D3) of the first magnet portion (6A) of the first magnet unit (130A).

[0363] At the middle position of the rotor (110), the distance (D8) between the virtual line (701) and the partition wall (6C) of the first magnet unit (130A) may be smaller than the distance (D9) between the virtual line (701) and the first magnet portion (6A) of the first magnet unit (130A). In addition, the distance (D8) between the virtual line (701) and the partition wall (6C) of the first magnet unit (130A) may be smaller than the distance (D10) between the virtual line (701) and the second magnet portion (6B) of the first magnet unit (130A).

[0364] For example, the virtual line (701) may be a straight line connecting one side (or front surface) of the first sensor (170A) facing the first magnet unit (130A) and one side (or front surface) of the second sensor (170B) facing the first magnet unit (130A).

[0365] Additionally, at the middle position of the rotor (110), the distance between the virtual line (701) and the bulkhead (6C) of the first magnet unit (130A) may be smaller than the distance between the virtual line and one end of the first magnet unit (6A) and the distance between one end of the second magnet unit (6B).

[0366] As described in Fig. 18, by arranging the first sensor (170A) and the second sensor (170B) so as to be spaced apart from each other so as to face the convex curved surface of the first magnet unit (130A), the embodiment can improve the linearity of the graph between the displacement of the rotor (110) and the output of the position sensor (170) within the rotation range (622) of the rotor (110). Due to the improved linearity of the output of the position sensor (170), the displacement or position of the rotor (110) (or the blind portion (150)) can be accurately detected, and the sensing sensitivity of the position sensor (170) can be improved.

[0367] Fig. 19a shows the first position of the rotor (110) rotated to the maximum in the counterclockwise direction, and Fig. 19b shows the second position of the rotor (110) rotated to the maximum in the clockwise direction.

[0368] Referring to FIGS. 19A and 19B, at the first position of the rotor (110), both the first sensor (170A) and the second sensor (170A) may face or overlap the second magnet portion (6B) of the first magnet unit (130A). At the first position of the rotor (110), a straight line (602) passing through the center (101) (or optical axis) of the opening and the partition wall (6C) may not overlap the first sensor (170A) and the second sensor (170B). At the first position of the rotor (110), the straight line (602) may overlap the first coil unit (120A). The angle (θ2) at which the rotor (110) rotates from the center position of the rotor (110) to the first position of the rotor (110) may be greater than or equal to 6 degrees and less than or equal to 10 degrees. In other embodiments, 7 degrees ≤ θ2 ≤ 9 degrees may be applicable.

[0369] At the second position of the rotor (110), both the first sensor (170A) and the second sensor (170A) may face or overlap the first magnet portion (6A) of the first magnet unit (130A). At the second position of the rotor (110), a straight line (602) passing through the center (101) (or optical axis) of the opening and the partition wall (6C) may not overlap the first sensor (170A) and the second sensor (170B). At the second position of the rotor (110), the straight line (602) may overlap the first coil unit (120A). The angle (θ3) at which the rotor (110) rotates from the center position of the rotor (110) to the second position of the rotor (110) may be greater than or equal to 6 degrees and less than or equal to 10 degrees. In another embodiment, 7 degrees ≤ θ3 ≤ 9 degrees may be present.

[0370] In another embodiment, the first sensor (170A) may be disposed on the first substrate (191), and the second sensor (170B) may be disposed on the second substrate (192). Also, in another embodiment, the first sensor (170A) may be disposed within the hollow (9A) of the first coil unit (120A), and the second sensor (170B) may be disposed within the hollow (9A) of the second coil unit (120B). The first sensor (170A) may face the first magnet unit (130A), and the second sensor (170B) may face the second magnet unit (130B). At this time, at the central position of the rotor (110), the first sensor (170A) may overlap with the first magnet portion (6A) of the first magnet unit (130A), and the second sensor (170A) may overlap with the second magnet portion (6B) of the second magnet unit (130B). The polarity of the first magnet unit (130A) facing or opposing the first sensor (170A) at the central position and the polarity of the second magnet unit (130B) facing or opposing the second sensor (170B) may be opposite polarities.

[0371] Referring to FIGS. 19a and 19b, the distance between the virtual line (701) and the bulkhead (6C) of the first magnet unit (130A) may gradually increase as the rotor (110) rotates clockwise or counterclockwise with respect to the center position of the rotor (110).

[0372] Fig. 20 shows the correlation between the position of the rotor (110) and the output of the position sensor (170). g1 represents the output of the Hall sensor of the comparative example including only one Hall sensor, and g2 represents the output of the Hall sensor of the embodiment including two Hall sensors.

[0373] Referring to FIG. 20, in the comparative example (g1), the linearity of the graph deteriorates near the first and second positions of the rotor, thereby deteriorating the accuracy and sensitivity of the position sensor. On the other hand, in the embodiment (g2), the linearity of the output signal of the position sensor (170) can be improved within the rotation range (622) of the rotor (110). In particular, the linearity of the output signal of the position sensor (170) near the first and second positions of the rotor (110) can be improved. As a result, in the embodiment, the position of the rotor (110) (or the blind portion (150)) can be accurately detected, and the sensing sensitivity of the position sensor (170) can be improved.

[0374] Fig. 21 is a perspective view of a camera device (200) according to an embodiment.

[0375] Referring to FIG. 21, the camera device (200) may include an aperture module (100) and a lens module (400).

[0376] The camera device (200) may include a lens driving device (1000) that moves the lens module (400). In addition, the camera device (200) may include an image sensor (810) facing the lens module (400) in a first direction. Light passing through the aperture module (100) and the lens module (400) may be incident on the image sensor (810).

[0377] The lens driving device (1000) can perform an auto-focusing operation. For example, the lens driving device (1000) can include an "auto-focusing unit" for performing an auto-focusing operation. The auto-focusing unit can move the lens module (10) in the optical axis direction.

[0378] The lens driving device (1000) may include an OIS unit that performs an OIS (Optical Image Stabilization) operation for image stabilization. The OIS unit may move the lens module (400) in a direction perpendicular to the optical axis direction.

[0379] The image sensor (810) can perform a function of converting light passing through the lens module (400) into image data. For example, the image sensor (810) can convert light into an analog signal through a pixel array including a plurality of pixels, and generate image data by synthesizing a digital signal corresponding to the analog signal.

[0380] The camera device (200) may further include a filter (610) positioned between the lens module (400) and the image sensor (810). The filter (610) may serve to block light of a specific frequency band from passing through the lens module (400) from entering the image sensor (810). For example, the filter (610) may be an infrared blocking filter, but is not limited thereto.

[0381] The camera device (200) may further include a circuit board (800) electrically connected to the image sensor (810). The circuit board (800) may be disposed below the image sensor (810). The circuit board (800) may be disposed below the lens driving device (1000). The circuit board (800) may be a printed circuit board. The circuit board (800) may include a connector (840) for electrical connection to the outside. The camera device (200) may further include an adhesive (612) that couples the lens driving device (1000) to the circuit board (800).

[0382] The camera device (200) may further include a sensor base (600) for mounting or arranging a filter (610). The sensor base (600) may be arranged between the lens driving device (1000) and the circuit board (800). The filter (610) may be arranged on the sensor base (600). Alternatively, the filter (610) may be coupled to or fixed to the sensor base (600). The sensor base (600) may be coupled to the circuit board (800). In another embodiment, the sensor base (600) may be omitted, and the filter (610) may be arranged on or coupled to the lens driving device (1000).

[0383] In addition, the camera device (200) according to the embodiment may be included in an optical instrument that forms an image of an object in space by using the characteristics of light such as reflection, refraction, absorption, interference, and diffraction, and aims to increase the visual acuity of the eye, or to record and reproduce an image by a lens, or to optically measure, propagate or transmit an image, etc. For example, the optical device according to the embodiment may be a mobile device, a cell phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation system, etc., but is not limited thereto, and any device for taking a video or a photo may be used.

[0384] FIG. 22a shows a perspective view of an optical device (200A) according to an embodiment, FIG. 22b shows a perspective view of an optical device (200X) according to another embodiment, and FIG. 23 shows a configuration diagram of the optical device (200A) shown in FIGS. 22a and 22b.

[0385] For example, the embodiment of FIG. 22A may include a front camera in which the lens module (10) of the camera device (200) is positioned so that it faces the front of the body (850), and the embodiment of FIG. 22B may include a rear camera in which the lens module (10) of the camera device (200) is positioned so that it faces the rear of the body (850) of the optical device (200A). While FIG. 22B illustrates an example in which two rear cameras are positioned, in other embodiments, one or three or more rear cameras may be positioned. In other embodiments, the camera device (200) may be used for both the front camera and the rear camera.

[0386] Referring to FIGS. 22A, 22B, and 23, the optical device (200A) may include a body (850), a wireless communication unit (710), an A / V input unit (720), a sensing unit (740), an input / output unit (750), a memory unit (760), an interface unit (770), a control unit (780), and a power supply unit (790).

[0387] The body (850) is in the form of a bar, but is not limited thereto, and may have various structures such as a slide type, folder type, swing type, or swivel type in which two or more sub-bodies are connected to enable relative movement.

[0388] The wireless communication unit (710) may be configured to include one or more modules that enable wireless communication between the optical device (200A) and a wireless communication system or between the optical device (200A) and a network in which the optical device (200A) is located. For example, the wireless communication unit (710) may be configured to include a broadcast reception module (711), a mobile communication module (712), a wireless Internet module (713), a short-range communication module (714), and a location information module (715).

[0389] The A / V (Audio / Video) input unit (720) is for inputting audio signals or video signals and may include a camera (721) and a microphone (722), etc.

[0390] The camera (721) may include a camera device (200) according to an embodiment.

[0391] The sensing unit (740) can detect the current state of the optical device (200A), such as the open / close state of the optical device (200A), the position of the optical device (200A), the presence or absence of user contact, the orientation of the optical device (200A), acceleration / deceleration of the optical device (200A), and generate a sensing signal to control the operation of the optical device (200A). For example, if the optical device (200A) is in the form of a slide phone, it can sense whether the slide phone is open or closed. In addition, it is responsible for sensing functions related to whether power is supplied to the power supply unit (790), whether the interface unit (770) is connected to an external device, and the like.

[0392] The input / output unit (750) is for generating input or output related to visual, auditory, or tactile senses. The input / output unit (750) can generate input data for controlling the operation of the optical device (200A) and can also display information processed in the optical device (200A).

[0393] The input / output unit (750) may include a key pad unit (730), a display module (751), an audio output module (752), and a touch screen panel (753). The key pad unit (730) may generate input data through key pad input.

[0394] The display module (751) may include a plurality of pixels whose colors change according to an electrical signal. For example, the display module (751) may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display.

[0395] The audio output module (752) can output audio data received from the wireless communication unit (710) in a call signal reception mode, call mode, recording mode, voice recognition mode, or broadcast reception mode, or can output audio data stored in the memory unit (760).

[0396] The touch screen panel (753) can convert a change in electrostatic capacity caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal.

[0397] The memory unit (760) may store programs for processing and controlling the control unit (780), and may temporarily store input / output data (e.g., phone book, messages, audio, still images, photographs, videos, etc.). For example, the memory unit (760) may store images captured by the camera (721), such as photographs or videos.

[0398] The interface unit (770) serves as a passage connecting to an external device connected to the optical device (200A). The interface unit (770) receives data from the external device, supplies power, and transmits it to each component inside the optical device (200A), or allows data inside the optical device (200A) to be transmitted to the external device. For example, the interface unit (770) may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0399] The control unit (controller, 780) can control the overall operation of the optical device (200A). For example, the control unit (780) can perform related control and processing for voice calls, data communications, video calls, etc.

[0400] The control unit (780) may be equipped with a multimedia module (781) for multimedia playback. The multimedia module (781) may be implemented within the control unit (780) or may be implemented separately from the control unit (780).

[0401] The control unit (780) can perform pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively.

[0402] The power supply unit (790) can supply power required for the operation of each component by receiving external power or internal power under the control of the control unit (780).

[0403] The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to just one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by those skilled in the art to which the embodiments pertain. Therefore, the contents related to such combinations and modifications should be construed as being included within the scope of the present invention.

[0404] The embodiment can be used in an aperture module, a camera device and an optical device that can accurately detect the displacement of a rotor and improve the sensing sensitivity of a position sensor.

Claims

1. Base; A rotor placed on the above base; A ball member disposed between the base and the rotor; A magnet placed on the above rotor; A coil disposed on the base so as to face the magnet and rotating the rotor by interacting with the magnet; A blade portion connected to the rotor and having an opening whose size varies by rotation of the rotor; and Including a first sensor and a second sensor for detecting displacement of the rotor, The magnet has a convex surface facing the coil, and the first sensor and the second sensor are aperture modules facing the convex surface of the magnet.

2. In paragraph 1, The first sensor includes a first end and a second end positioned opposite to each other in a direction perpendicular to the direction in which the coil and the magnet face each other, and the second sensor is positioned closer to the second end of the first sensor than to the first end of the first sensor. An aperture module wherein the distance between the first end of the first sensor and the curved surface of the magnet is greater than the distance between the second end of the first sensor and the curved surface of the magnet.

3. In paragraph 2, An aperture module wherein the separation distance between the first sensor and the second sensor is greater than the distance between the first end of the first sensor and the curved surface of the magnet.

4. In paragraph 1, An aperture module wherein the separation distance between the first sensor and the second sensor is greater than the separation distance between the coil and the first sensor and the separation distance between the coil and the second sensor.

5. In paragraph 1, Includes a circuit board placed on the above base, An aperture module in which the first sensor and the second sensor are arranged on the first surface of the circuit board facing the magnet.

6. In paragraph 1, Each of the first sensor and the second sensor is a Hall sensor including two input terminals and two output terminals, An aperture module in which the output terminals of each of the first sensor and the second sensor are connected in series.

7. In paragraph 1, The second sensor includes a first end and a second end positioned opposite to each other in a direction perpendicular to the direction in which the coil and the magnet face each other, and the first sensor is positioned closer to the second end of the second sensor than to the first end of the second sensor. An aperture module wherein the distance between the first end of the second sensor and the curved surface of the magnet is greater than the distance between the second end of the second sensor and the curved surface of the magnet.

8. In paragraph 7, An aperture module wherein the distance between the first sensor and the second sensor is greater than the distance between the first end of the second sensor and the curved surface of the magnet.

9. In paragraph 1, The above coil comprises a hollow, An aperture module wherein the first sensor and the second sensor are positioned within the hollow portion of the coil.

10. In paragraph 1, The above magnet is an aperture module including a first magnet portion, a second magnet portion, and a partition wall positioned between the first magnet portion and the second magnet portion.

Images