Stop device, camera device, and optical device

Abstract

A stop device according to an embodiment of the present invention comprises: a base including a first aperture at one end thereof and a second aperture at the other end thereof; a rotor disposed on the base; a drive unit that moves the rotor with respect to the base; and blades forming a blade hole the size of which is changed according to the movement of the rotor, wherein a lens unit including at least one lens is disposed within the base, and the diameter of the first aperture is smaller than the diameter of the second aperture.

Description

Aperture devices, camera devices and optical instruments

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

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

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

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

[0005] The present invention seeks to provide a camera device capable of operating without performance limitations even in dark environments. Furthermore, the present invention seeks to provide an aperture device for the aforementioned camera device.

[0006] An aperture device according to the present embodiment comprises a base including a first opening at one end and a second opening at the other end; a rotor disposed on the base; a driving unit that moves the rotor relative to the base; and a blade that forms a blade hole whose size changes according to the movement of the rotor, wherein a lens unit including at least one lens is disposed inside the base, and the diameter of the first opening is smaller than the diameter of the second opening.

[0007] The diameter of the first opening may be smaller than the diameter of the lens with the smallest diameter among the lens parts.

[0008] The diameter of the second opening may be larger than the diameter of the lens with the largest diameter among the lens parts.

[0009] The inner surface of the above base can have at least one step formed.

[0010] The base may include a first protrusion inserted into a first hole of the blade, and the rotor may include a second protrusion inserted into a second hole of the blade.

[0011] The first hole may be formed in a circular shape, and the second hole may be formed in an oval shape.

[0012] The substrate may be disposed on the base, and the driving unit may include a magnet disposed on the rotor and a coil disposed on the substrate and interacting with the magnet.

[0013] It may include a ball disposed between the base and the rotor, and a base sheet disposed between the blade and the base.

[0014] A camera device according to the present embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; a lens coupled to the lens driving device; and the aperture device disposed on the lens.

[0015] An optical device according to the present embodiment may include a main body; the camera device disposed in the main body; and a display disposed in the main body and outputting at least one of an image and a video captured by the camera device.

[0016]

[0017] An aperture device according to the present embodiment comprises: a base; a rotor disposed on the base; a driving unit that moves the rotor relative to the base; and a blade that forms a blade hole whose size changes according to the movement of the rotor, wherein the blade includes a protrusion protruding from one surface.

[0018] The base includes a first protrusion inserted into a first hole of the blade, the rotor includes a second protrusion inserted into a second hole of the blade, and the protrusion of the blade may be arranged closer to the second hole than to the first hole.

[0019] A cover is included that is placed on the base, and the protrusion of the blade can face the inner surface of the cover.

[0020] A cover disposed on the base includes an opening overlapping the blade hole in the optical axis direction, and a protrusion of the blade can face the inner surface of the cover when the blade hole is at a minimum size or a maximum size.

[0021] The above blade includes a plurality of blades, and an imaginary line connecting the protrusions of the plurality of blades may be circular.

[0022] The first hole may be formed in a circular shape, and the second hole may be formed in an oval shape.

[0023] The substrate may be disposed on the base, and the driving unit may include a magnet disposed on the rotor and a coil disposed on the substrate and interacting with the magnet.

[0024] It may include a ball disposed between the base and the rotor, and a base sheet disposed between the blade and the base.

[0025] A camera device according to the present embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; a lens coupled to the lens driving device; and the aperture device disposed on the lens.

[0026] An optical device according to the present embodiment may include a main body; the camera device disposed in the main body; and a display disposed in the main body and outputting at least one of an image and a video captured by the camera device.

[0027] Through the present invention, the camera function of a smartphone can be used without performance limitations even in a dark environment.

[0028] In addition, by assembling the lens and aperture device into one body at once, optical axis misalignment (Decenter) can be minimized, and the air gap between the lens and blade can be assembled at a uniform level.

[0029] Additionally, the protruding structure of the blade surface can minimize tilt and friction between blades due to differences in the posture of the camera module.

[0030] In addition, the protruding structure of the blade surface can be optimized by applying it to a location where interference between blades does not occur and is not exposed by the cover.

[0031] Figure 1 is a perspective view of a camera module according to the present embodiment.

[0032] Figure 2 is an exploded perspective view of a camera module according to the present embodiment.

[0033] Fig. 3 is a perspective view of an aperture device according to the present embodiment.

[0034] Figure 4 is a cross-sectional view taken along line AA of Figure 3.

[0035] Figure 5 is a cross-sectional view viewed from BB in Figure 3.

[0036] Fig. 6 is a perspective view of an aperture device according to the present embodiment with the cover omitted.

[0037] Figure 7 is a perspective view of Figure 6 with the blade and substrate omitted.

[0038] Figure 8 is a perspective view of Figure 6 with the blades and rotor omitted.

[0039] Fig. 9 is a perspective view from a different angle with the substrate omitted from Fig. 8.

[0040] Fig. 10 is a perspective view of the bottom of the base according to the present embodiment.

[0041] Fig. 11 is a perspective view of a rotor according to the present embodiment.

[0042] Figure 12 is a perspective view of Figure 11 from a different angle.

[0043] Figure 13 is a perspective view of a blade according to the present embodiment.

[0044] Fig. 14 is a cross-sectional view of the cover, blade, base sheet, and rotor arranged according to the present embodiment.

[0045] Fig. 15 is a perspective view of an aperture device according to the present embodiment with the cover omitted and the blade hole size at its maximum.

[0046] Fig. 16 is a perspective view of an aperture device according to the present embodiment with the cover omitted and the blade hole size minimized.

[0047] Figure 17 is an exploded perspective view of a camera device according to the present invention.

[0048] Figure 18 is a perspective view of an optical device according to the present invention.

[0049] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0050] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0051] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0052] Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0053] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0054] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0055] And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

[0056] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward direction based on one component.

[0057] The 'optical axis direction' used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens drive device.

[0058] The 'vertical direction' used below may be a direction parallel to or the same direction as the optical axis direction. The vertical direction may correspond to the 'z-axis direction'. The 'horizontal direction' used below may be a direction perpendicular to the vertical direction. That is, the horizontal direction may be a direction perpendicular to the optical axis. Therefore, the horizontal direction may include the 'x-axis direction' and the 'y-axis direction'.

[0059] The 'auto focus (AF) function' used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. In addition, 'closed-loop auto focus (CLAF) control' is defined as a function that detects the distance between the image sensor and the lens and provides feedback control of the position of the lens in real time to improve the accuracy of focus adjustment.

[0060]

[0061] Below, the configuration of the aperture device according to the present embodiment is described with reference to the drawings.

[0062] FIG. 1 is a perspective view of a camera module according to the present embodiment, FIG. 2 is an exploded perspective view of a camera module according to the present embodiment, FIG. 3 is a perspective view of an aperture device according to the present embodiment, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, FIG. 5 is a cross-sectional view taken along line BB of FIG. 3, FIG. 6 is a perspective view of an aperture device according to the present embodiment with a cover omitted, FIG. 7 is a perspective view of FIG. 6 with a blade and a substrate omitted, FIG. 8 is a perspective view of FIG. 6 with a blade and a rotor omitted, FIG. 9 is a perspective view of FIG. 8 from another angle with the substrate omitted, FIG. 10 is a bottom perspective view of a base according to the present embodiment, FIG. 11 is a perspective view of a rotor according to the present embodiment, FIG. 12 is a perspective view of FIG. 11 from another angle, FIG. 13 is a perspective view of a blade according to the present embodiment, and FIG. 14 is a perspective view of a cover, a blade, and a base according to the present embodiment. This is a cross-sectional view of a state in which a sheet and a rotor are arranged, FIG. 15 is a perspective view of an aperture device according to the present embodiment in which the cover is omitted and the blade hole size is at a maximum, FIG. 16 is a perspective view of an aperture device according to the present embodiment in which the cover is omitted and the blade hole size is at a minimum, FIG. 17 is an exploded perspective view of a camera device according to the present invention, and FIG. 18 is a perspective view of an optical device according to the present invention.

[0063] The aperture device may be an aperture. The aperture device can control the amount of light passing through the lens. The aperture device can control the amount of light entering the image sensor (60). The aperture device can control the size of the hole through which light passes.

[0064] The aperture device can accommodate the lens unit. The aperture device can move integrally with the lens unit. The aperture device can move together with the lens unit. The aperture device can move together with the lens unit in the direction of the optical axis.

[0065] The aperture device may include a stator (100). The stator (100) may be a fixed part. The stator (100) may be a part that is relatively fixed with respect to the rotor (200). The stator (100) may movably support the rotor (200).

[0066] The aperture device may include a base (110). The stator (100) may include the base (110). The base (110) may be coupled to a cover (120). The base (110) may accommodate a rotor (200). The base (110) may movably support the rotor (200).

[0067] The interior of the base (110) can accommodate a lens unit (20). The lens unit (20) can include at least one lens and a spacer. The interior of the base (110) can be formed in a hollow shape. One end of the base (110) can include a first opening (113) through which a lens is exposed to the outside, and the other end can include a second opening (114) through which a lens is inserted. The diameter of the first opening (113) can be smaller than the diameter of the second opening (114). The diameter of the first opening (113) can be smaller than the diameter of a lens with a smallest diameter among the lenses included in the lens unit (20). The size of the second opening (114) can be larger than the diameter of a lens with a largest diameter among the lenses included in the lens unit (20). The base (110) can be referred to as a lens barrel. The inner surface of the base (110) may have at least one step formed for arranging the lens portion (20).

[0068] When the base (110) of the aperture device and the lens barrel are configured separately, there is a problem of optical axis misalignment (Decenter) occurring between the lens included in the lens barrel and the parts of the aperture device, and there is a problem of the optical axis distance (Gap) between the lens and the blade being assembled irregularly.

[0069] According to the present embodiment, the aperture device can be subjected to an MTF evaluation, which is a lens performance evaluation, after assembling the lens unit (20) through the second opening of the base (110). Thereafter, after assembling the substrate (130), the rotor (200), the driving unit (400), the blade (300), and the cover (120) to the outside of the base (110), the performance of the aperture device can be evaluated. That is, since the performance of the aperture device is evaluated in a state where the lens unit (20) is assembled to the base (110), the optical axis misalignment and the optical axis distance between the lens and the blade are assembled at a uniform level, which is effective for quality control.

[0070]

[0071] The base (110) may include a first protrusion (111). The first protrusion (111) may be referred to as a fixed boss. The first protrusion (111) may be coupled with the blade (300). The first protrusion (111) may be placed in the first hole (301) of the blade (300). The first protrusion (111) may be inserted into the first hole (301) of the blade (300). The blade (300) may pivotally move around the first protrusion (111) of the base (110).

[0072] The base (110) may include a rail (112). The rail (112) may be referred to as a guide groove. A ball (500) may be placed on the rail (112). The ball (500) may be placed on the rail (112). The rail (112) may contact the ball (500) at at least two points. The ball (500) may move along the rail (112). The ball (500) may roll along the rail (112).

[0073] The aperture device may include a cover (120). The stator (100) may include the cover (120). The cover (120) may be disposed on the base (110). The cover (120) may be disposed on the base (110). The cover (120) may accommodate the rotor (200) therein. The cover (120) may include an upper plate (121) and a side plate (122) extending from the upper plate (121). The cover (120) may include an opening through which light incident on the aperture device passes. The opening of the cover (120) may overlap the blade hole (304) in the optical axis direction.

[0074] The aperture device may include a substrate (130). The stator (100) may include the substrate (130). The substrate (130) may be disposed on the base (110). The substrate (130) may be disposed on the base (110). The substrate (130) may be disposed on an outer peripheral surface of the base (110). The substrate (130) may be disposed on an outer surface of the base (110). The substrate (130) may be a flexible printed circuit board (FPCB).

[0075] The substrate (130) may be electrically connected to the substrate of the lens driving device (800). Through this, the substrate (130) may receive power from the printed circuit board (50). The substrate (130) of the aperture device and the substrate of the lens driving device (800) may be directly connected. Alternatively, a separate conductive member may be provided to connect the substrate (130) of the aperture device and the substrate of the lens driving device (800). Alternatively, the substrate (130) of the aperture device may be directly connected to the printed circuit board (50) without being connected to the substrate of the lens driving device (800).

[0076] The substrate (130) may include a side plate disposed on the base (110), a first plate (131) extending from the side plate, and a second plate (132) extending from the first plate (131) and connected to the lens driving device (800). The first plate (131) of the substrate (130) may form an inclined surface with the side plate. The first plate (131) may extend from an area where the coil (420) of the substrate (130) is disposed.

[0077] The second plate (132) can form an inclined surface with the first plate (131). The second plate (132) can be placed on the lens driving device (800). The second plate (132) can include a pad (133) connected to a terminal of the lens driving device (800). The pad (133) of the second plate (132) can be formed at both ends of the second plate (132). The pad (133) of the second plate (132) can be electrically connected to the lens driving device (800) to apply power to the coil (420).

[0078] A coil (420) may be placed on the substrate (130). A sensor (430) may be placed on the substrate (130). The coil (420) may be placed on the inner surface of the substrate (130). A stiffener may be placed on the outer surface of the substrate (130) at a position corresponding to the coil (420). The stiffener may reinforce the strength of the substrate (130) and may be formed of metal.

[0079]

[0080] The aperture device may include a rotor (200). The rotor (200) may be a moving part. The rotor (200) may be a movable part. The rotor (200) may be a mover. The rotor (200) may be a mover. The rotor (200) may be a mover. The rotor (200) may be a carrier.

[0081] The rotor (200) can be placed on the stator (100). The rotor (200) can be placed on the stator (100). The rotor (200) can be movably placed on the stator (100). The rotor (200) can be rotatably placed on the stator (100). The rotor (200) can be placed on the base (110). The rotor (200) can be movably placed on the base (110). The rotor (200) can be placed within the base (110). The rotor (200) can be placed within the cover (120). The rotor (200) can rotate within the base (110). The rotor (200) can rotate within the cover (120). The rotor (200) can move the blade (300). The rotor (200) can move together with the blades (300).

[0082] The rotor (200) may include a second protrusion (201). The second protrusion (201) may be referred to as a movable boss. The second protrusion (201) may be formed on the upper surface of the rotor (200). The second protrusion (201) may protrude upward from the body of the rotor (200). The second protrusion (201) may be formed on the upper surface of the body of the rotor (200). The second protrusion (201) may be coupled with the blade (300). Through this, when the rotor (200) moves, the blade (300) may also move together. The second protrusion (201) may be arranged in the second hole (302) of the blade (300). The second protrusion (201) may be arranged to be movable within the second hole (302) of the blade (300). The second protrusion (201) can be inserted into the second hole (302) of the blade (300). The second protrusion (201) can move within the second hole (302) of the blade (300).

[0083] The rotor (200) may include a coupling hole (205). The rotor (200) may include a coupling hole (205) into which the first protrusion (111) of the stator (100) is inserted. The rotor (200) may include a coupling hole (205) into which the first protrusion (111) of the base (110) is inserted. The coupling hole (205) may include a plurality of coupling holes (205) spaced apart from each other along the circumferential direction in the body portion of the rotor (200). The coupling hole (205) may overlap the second hole (302) of the blade (300) in the optical axis direction. The coupling hole (205) may be formed as an oval or an elongated hole.

[0084] The rotor (200) may include a rail (202). The rail (202) may be referred to as a guide groove. A ball (500) may be placed on the rail (202). The ball (500) may be placed on the rail (202). The rail (202) may contact the ball (500) at at least two points. The ball (500) may move along the rail (202). The ball (500) may roll along the rail (202).

[0085] The rotor (200) may include a protrusion (203). The protrusion (203) may be formed to protrude from the lower surface of the rotor (200). The protrusion (203) may be formed in an area where the rail (202) of the rotor (200) is formed. The protrusion (203) may come into contact with the base (110) when the rotor (200) rotates. Through this, the rotational range of the rotor (200) may be limited. The protrusion (203) may form a step with the lower surface of the rotor (200). The protrusion (203) may have a protrusion shape that protrudes downward.

[0086] The protrusion (203) can overlap with the base (110) in the circumferential direction centered on the optical axis. The protrusion (203) can overlap with the ball (500) in the radial direction. When the rotor (200) is coupled to the stator (100), the lower end of the protrusion (203) can be positioned higher than the lower end of the ball (500).

[0087] The rotor (200) may include a magnet receiving portion (204). A magnet (410) may be placed in the magnet receiving portion (204). The magnet receiving portion (204) may receive at least a portion of the magnet (410). The magnet receiving portion (204) may come into contact with the base (110) when the rotor (200) rotates. Through this, the rotational range of the rotor (200) may be limited. The magnet receiving portion (204) may have a protrusion shape that protrudes downward.

[0088] In this embodiment, the protrusion (203) and the magnet receiving portion (204) of the rotor (200) may function together as stoppers. Alternatively, the protrusion (203) may function as a main stopper and the magnet receiving portion (204) may function as an auxiliary stopper. Alternatively, the magnet receiving portion (204) may function as a main stopper and the protrusion (203) may function as an auxiliary stopper. Alternatively, only one of the protrusion (203) and the magnet receiving portion (204) may function as a stopper.

[0089]

[0090] The aperture device may include a blade (300). The blade (300) may be a member that blocks light. The blade (300) may be a light-blocking member. The blade (300) may be placed on the stator (100). The blade (300) may be placed on the base (110). The blade (300) may be placed inside the cover (120). The blade (300) may be placed on the rotor (200). The blade (300) may move together with the rotor (200). That is, when the rotor (200) moves, the blade (300) may also move together.

[0091] The blade (300) may include a first part coupled with the stator (100) and a second part coupled with the rotor (200). Through this, when the rotor (200) moves, the blade (300) can pivotally move with respect to the stator (100).

[0092] The blade (300) may include a first hole (301) into which the first protrusion (111) of the stator (100) is inserted. The blade (300) may include a first hole (301) into which the first protrusion (111) of the base (110) is inserted. The blade (300) may include a second hole (302) into which the second protrusion (201) of the rotor (200) is inserted. The blade (300) may include a second hole (302) into which the second protrusion (201) of the rotor (200) is inserted. The first hole (301) may be formed smaller than the second hole (302). The first hole (301) may be formed in a circular shape, and the second hole (302) may be formed in an oval or long hole.

[0093] When the rotor (200) moves, the blade (300) can pivot relative to the stator (100). The blade (300) can rotate and move linearly at the point where it meets the stator (100). The blade (300) can move linearly at the point where it meets the rotor (200).

[0094] The line connecting the second hole (302) of the blade (300) may be circular. The rotor (200) can rotate when the second protrusion (201) of the rotor (200) is inserted into the second hole (302) of the blade (300). When the rotor (200) rotates, the relative position of the second protrusion (201) of the rotor (200) within the second hole (302) of the blade (300) may change. Alternatively, when the rotor (200) rotates, the relative position of the first protrusion (111) of the base (110) within the first hole (301) of the blade (300) may change. For example, when the rotor (200) rotates, the relative position of the second protrusion (201) of the rotor (200) may change from being in contact with one end of the second hole (302) of the blade (300) to being in contact with the other end.

[0095] The blade (300) may include a blade hole (304). The blade (300) may include a blade hole (304) formed by a plurality of blades (300). The size or shape of the blade hole (304) may be changed by the plurality of blades (300). Light may pass through the blade hole (304). The blade hole (304) may be hollow. The blade hole (304) may be a light passage hole.

[0096] The blade (300) may include a plurality of blades. The blade (300) may include six blades. The plurality of blades may have the same shape. At least one area of ​​the plurality of blades may be arranged to overlap in the optical axis direction. The plurality of blades may form a blade hole (304) whose size changes according to the movement of the rotor (200). As the overlapping area of ​​the plurality of blades increases, the size of the blade hole (304) may decrease. As the overlapping area of ​​the plurality of blades decreases, the size of the blade hole (304) may increase. The blade hole (304) may be formed by the inner peripheral surface (303) of the plurality of blades.

[0097] The plurality of blades may be arranged separately in two layers. For example, if the plurality of blades includes six blades, three blades may be arranged on the same plane in the upper layer, and three blades may be arranged on the same plane in the lower layer. The plurality of blades arranged on the same plane or in the same layer may not overlap in the optical axis direction due to the rotation of the rotor (200).

[0098] The blade (300) may include an inner surface (303). The inner surface (303) may form a blade hole (304) through which light passes. The blade (300) may include an inner surface (303) that forms the blade hole (304). The inner surface (303) may be an inner surface. The inner surface (303) may be an inner surface. The inner surface (303) of the blade (300) may include a plurality of circular arc regions and a plurality of planar regions.

[0099] The blade (300) may include a protrusion (305). The protrusion (305) may protrude in the direction of the optical axis from one surface of the blade (300). The protrusion (305) may protrude from one surface of the blade (300) in a direction facing the cover (120). The protrusion (305) may have a sunken shape when viewed from the other surface of the blade (300). The protrusion (305) may face the inner surface of the cover (120). The protrusion (305) may come into contact with the inner surface of the cover (120). The protrusion (305) may be arranged closer to the second hole (302) than to the first hole (301).

[0100] A gap is formed between the blades and the cover of the aperture device, and the blades may tilt due to differences in posture. In addition, there is a problem of friction and interference occurring between the blade surfaces that come into contact with each other when the blades are rotated. In order to solve this problem, the present embodiment forms a protrusion (305) on the blade (300), thereby stably securing a gap between the blade (300) and the cover (120).

[0101] The virtual line (L2) connecting the protrusions (305) of the plurality of blades (300) may be circular. The diameter of the virtual circle (L2) may be larger than the diameter of the opening (L1) of the cover (120). When the blade hole (304) is at its maximum size, the diameter of the virtual circle (L2) may be larger than the diameter of the virtual circle when the blade hole (304) is at its minimum size. When the blade hole (304) is at its maximum size, the blade hole (304) may be smaller than the opening (L1) of the cover (120).

[0102] As the blade hole (304) becomes smaller, the protrusion (305) can move closer to the opening (L1) of the cover (120). When the blade hole (304) is at its minimum size, the protrusion (305) may not be exposed to the outside by the opening (L1) of the cover (120). When the blade hole (304) is at its minimum size or its maximum size, the protrusion (305) can face the inner surface of the cover (120). When the blade hole (304) is at its minimum size or its maximum size, the protrusion (305) can come into contact with the inner surface of the cover (120).

[0103] Through this, even when the size of the blade hole (304) changes, the protrusion (305) can maintain the separation space between the blade (300) and the cover (120) by making contact with the inner surface of the cover (120). In addition, when the blade (300) rotates, the protrusion (305) of one blade (300) may not interfere with the protrusion (305) of the adjacent blade (300).

[0104]

[0105] In this embodiment, when current is applied to the coil (420), the magnet (410) can move due to the electromagnetic interaction between the magnet (410) and the coil (420). At this time, the rotor (200) can move together with the magnet (410). As the rotor (200) moves, the second protrusion (201) of the rotor (200) can press and move the blade (300) within the second hole (302) of the blade (300). At this time, the blade (300) can pivotally move around the first protrusion (111). Through this, the diameter or shape of the blade hole (304) formed by the plurality of blades can be changed.

[0106] The aperture device may include a base sheet (350) disposed under the blade (300). The base sheet (350) may be disposed between the blade (300) and the base (110). The base sheet (350) may prevent interference between the blade (300) and the base (110) and may prevent tilting due to rotational driving of the blade (300).

[0107]

[0108] The aperture device may include a driving unit (400). The driving unit (400) may move the rotor (200). The driving unit (400) may move the blade (300). The driving unit (400) may move the rotor (200) relative to the base (110). The driving unit (400) may move the rotor (200) through electromagnetic interaction. The driving unit (400) may include a magnet (410) and a coil (420).

[0109] The aperture device may include a magnet (410). The driving unit (400) may include a magnet (410). The magnet (410) may be disposed on the rotor (200). The magnet (410) may be disposed on the rotor (200). The magnet (410) may be coupled to the rotor (200). The magnet (410) may be fixed to the rotor (200). The magnet (410) may be bonded to the rotor (200) with an adhesive. The magnet (410) may be disposed on the lower surface of the rotor (200).

[0110] The magnet (410) is movable. The magnet (410) can move through interaction with the coil (420). The magnet (410) can move integrally with the rotor (200). The magnet (410) can move together with the rotor (200).

[0111] The aperture device may include a coil (420). The driving unit (400) may include the coil (420). The coil (420) may be disposed on the stator (100). The coil (420) may be disposed on the substrate (130). The coil (420) may be coupled to the substrate (130). The coil (420) may be soldered to the substrate (130). The coil (420) may be electrically connected to the substrate (130). Alternatively, the coil (420) may be formed as a pattern coil on the substrate (130). The coil (420) may be disposed on the base (110). The coil (420) may be disposed within the cover (120).

[0112] The coil (420) can be positioned corresponding to the magnet (410). The coil (420) can overlap the magnet (410). The coil (420) can overlap the magnet (410) in a direction perpendicular to the optical axis. In a variation, the coil (420) and the magnet (410) can overlap in the optical axis direction. The coil (420) can face the magnet (410). The coil (420) can face the magnet (250). The coil (420) can interact with the magnet (410). The coil (420) can electromagnetically interact with the magnet (410). When current is applied to the coil (420), the magnet (410) can move due to the interaction between the electromagnetic field of the coil (420) and the electromagnetic field of the magnet (410). The coil (420) can move the magnet (410). The coil (420) can remain relatively fixed when the magnet (410) moves.

[0113] Alternatively, the coil (420) may be placed on the rotor (200) and the magnet (410) may be placed on the stator (100). The coil (420) may move with the rotor (200) and the magnet (410) may be fixed.

[0114] The aperture device may include a sensor (430). The driving unit (400) may include the sensor (430). The sensor (430) may be disposed on the substrate (130). The sensor (430) may be electrically connected to the substrate (130). The sensor (430) may detect the magnet (410). The sensor (430) may be a Hall sensor. The sensor (430) may detect the magnetic force of the magnet (410). The sensor (430) may be disposed at a position corresponding to the magnet (410). The sensor (430) may overlap the magnet (410) in the optical axis direction. Alternatively, the sensor (430) may overlap the magnet (410) in a direction perpendicular to the optical axis. Control of the blade (300) can be fed back in real time through the position of the magnet (410) detected by the sensor (430). That is, the blade (300) can be feedback controlled in real time by the sensor (430).

[0115] The aperture device may include a guide member. The guide member may guide movement of the rotor (200) relative to the stator (100).

[0116] The aperture device may include a ball (500). The guide member may include the ball (500). The ball (500) may be disposed between the stator (100) and the rotor (200). The ball (500) may be disposed between the base (110) and the rotor (200). The ball (500) may be disposed on the base (110). The ball (500) may be in contact with the base (110). The ball (500) may move along the base (110). The ball (500) may move along the rail (112) of the base (110). The ball (500) may be disposed on the rotor (200). The ball (500) may be in contact with the rotor (200). The ball (500) may move along the rotor (200). The ball (500) can move along the rail (202) of the rotor (200). The ball (500) can be placed between the rail (112) of the base (110) and the rail (202) of the rotor (200).

[0117] The ball (500) can guide the movement of the rotor (200) in the circumferential direction. That is, the ball (500) can guide the rotor (200) to rotate around the optical axis. The ball (500) can restrict the rotor (200) to only rotate around the optical axis.

[0118] The ball (500) may include a plurality of balls. The ball (500) may include four balls. The ball (500) may include first to fourth balls.

[0119] The aperture device may include a first yoke. The first yoke may be disposed on the inner surface of the substrate (130). The first yoke may be disposed on the base (110). The first yoke may be disposed between the base (110) and the substrate (130). The first yoke may be disposed to overlap the coil (420) in the circumferential direction. An attractive force may be applied between the first yoke and the magnet (410). Through this structure, when no current is applied to the coil (420), the magnet (410) may be disposed at a position adjacent to the first yoke rather than at an arbitrary position. Accordingly, even when no current is applied to the coil (420), the magnet (410) and the rotor (200) are fixed, so that noise generated by the rotor (200) striking the stator (100) can be prevented.

[0120] The aperture device may include a ball pressurizing member. The ball pressurizing member may press the ball (500) against the rotor (200) and the base (110).

[0121] The aperture device may include a second yoke. The ball pressurizing member may include the second yoke. The second yoke may be disposed on the stator (100). The second yoke may be disposed on the base (110). The second yoke may be disposed on the lower portion of the base (110). The second yoke may be insert-molded on the lower portion of the base (110). Alternatively, the second yoke may be disposed on the lower surface of the base (110). The second yoke may be disposed at a position corresponding to the magnet (410). The second yoke may be disposed diagonally downwardly outside the magnet (410). The second yoke may interact with the magnet (410) by force. Through this, the ball (500) may be pressed between the rotor (200) and the stator (100). The ball (500) can be pressed between the rotor (200) and the base (110) by the attractive force between the magnet (410) and the second yoke. The rotor (200) can press the ball (500) toward the base (110) by the attractive force between the magnet (410) and the second yoke.

[0122]

[0123] Below, the configuration of the camera device according to the present embodiment is described with reference to the drawings.

[0124] Figure 17 is an exploded perspective view of a camera device according to the present invention.

[0125] The camera device (10) may include a camera module.

[0126] The camera device (10) may include a lens driving device (800).

[0127] The lens driving device (800) may be a voice coil motor (VCM). The lens driving device (800) may be a lens driving motor. The lens driving device (800) may be a lens driving actuator. The lens driving device (800) may include an AF module. Alternatively, the lens driving device (800) may include an OIS module.

[0128] The camera device (10) may include a filter (30). The filter (30) may block light of a specific frequency band from passing through the lens module from being incident on the image sensor (60). The filter (30) may be arranged parallel to the xy plane. The filter (30) may be arranged between the lens module and the image sensor (60). The filter (30) may be arranged on the sensor base (40). Alternatively, the filter (30) may be arranged on the base (810) of the lens driving device (800). The filter (30) may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor (60).

[0129] The camera device (10) may include a sensor base (40). The sensor base (40) may be disposed between the lens actuator (800) and the printed circuit board (50). The sensor base (40) may include a protrusion (41) on which a filter (30) is disposed. An opening may be formed in a portion of the sensor base (40) on which the filter (30) is disposed so that light passing through the filter (30) may be incident on the image sensor (60). An adhesive member may couple or adhere the base (810) of the lens actuator (800) to the sensor base (40). The adhesive member may additionally serve to prevent foreign substances from entering the interior of the lens actuator (800). The adhesive member may include at least one of an epoxy, a thermosetting adhesive, and an ultraviolet-curable adhesive.

[0130] The camera device (10) may include a printed circuit board (PCB) (50). The printed circuit board (50) may be a substrate or a circuit board. A lens driving device (800) may be disposed on the printed circuit board (50). A sensor base (40) may be disposed between the printed circuit board (50) and the lens driving device (800). The printed circuit board (50) may be electrically connected to the lens driving device (800). An image sensor (60) may be disposed on the printed circuit board (50). Various circuits, elements, control units, etc. may be provided on the printed circuit board (50) to convert an image formed on the image sensor (60) into an electrical signal and transmit it to an external device.

[0131] The camera device (10) may include an image sensor (60). The image sensor (60) may be configured to form an image by receiving light that has passed through a lens and a filter (30). The image sensor (60) may be mounted on a printed circuit board (50). The image sensor (60) may be electrically connected to the printed circuit board (50). For example, the image sensor (60) may be coupled to the printed circuit board (50) using surface mounting technology (SMT). As another example, the image sensor (60) may be coupled to the printed circuit board (50) using flip chip technology. The image sensor (60) may be arranged such that its optical axis is aligned with that of the lens. That is, the optical axis of the image sensor (60) and the optical axis of the lens may be aligned. The image sensor (60) can convert light irradiated onto the effective image area of ​​the image sensor (60) into an electrical signal. The image sensor (60) can be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0132] The camera device (10) may include a motion sensor (70). The motion sensor (70) may be mounted on a printed circuit board (50). The motion sensor (70) may be electrically connected to a control unit (80) through a circuit pattern provided on the printed circuit board (50). The motion sensor (70) may output rotational angular velocity information due to the movement of the camera device (10). The motion sensor (70) may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0133] The camera device (10) may include a control unit (80). The control unit (80) may be disposed on a printed circuit board (50). The control unit (80) may be electrically connected to a coil (860) of a lens driving device (800). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the coil (860). The control unit (80) may control the lens driving device (800) to perform an autofocus function and / or a shake correction function. Furthermore, the control unit (80) may perform autofocus feedback control and / or shake correction feedback control for the lens driving device (800). The control unit (80) may control an aperture device. The control unit (80) may control a current applied to a coil of the aperture device.

[0134] The camera device (10) may include a connector (90). The connector (90) may be electrically connected to a printed circuit board (50). The connector (90) may include a port for electrically connecting to an external device.

[0135]

[0136] Below, the configuration of the optical device according to the present embodiment is described with reference to the drawings.

[0137] Figure 18 is a perspective view of an optical device according to the present invention.

[0138] The optical device (1) may include one or more of a mobile phone, a cell phone, a portable terminal, a mobile terminal, a smart phone, a smart pad, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation device. The optical device (1) may include any device for taking images or photographs.

[0139] An optical device (1) may include a main body (2). The optical device (1) may include a camera device (10). The camera device (10) may be disposed on the main body (2). The camera device (10) may photograph a subject. The optical device (1) may include a display. The display may be disposed on the main body (2). The display may output one or more of a video or image captured by the camera device (10). The display may be disposed on a first surface of the main body (2). The camera device (10) may be disposed on one or more of the first surface of the main body (2) and a second surface opposite the first surface. The camera device (10) may have a triple camera disposed in a vertical direction. Alternatively, the camera device (10) may have a triple camera disposed in a horizontal direction.

[0140]

[0141] Although the embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical concept or essential features thereof. Therefore, the embodiments described above should be understood to be illustrative in all respects and not restrictive.

Claims

1. A base including a first opening at one end and a second opening at the other end; A rotor placed on the above base; a driving unit for moving the rotor relative to the base; and Includes a blade that forms a blade hole whose size changes according to the movement of the rotor, A lens unit including at least one lens is arranged inside the base, An aperture device in which the diameter of the first opening is smaller than the diameter of the second opening.

2. In paragraph 1, An aperture device in which the diameter of the first opening is smaller than the diameter of the lens with the smallest diameter among the lens parts.

3. In paragraph 1, An aperture device in which the diameter of the second opening is larger than the diameter of the lens with the largest diameter among the lens parts.

4. In paragraph 1, An aperture device in which the inner surface of the above base is formed with at least one step.

5. In paragraph 1, The above base includes a first protrusion inserted into the first hole of the blade, The rotor is an aperture device including a second protrusion inserted into a second hole of the blade.

6. In paragraph 5, The above first hole is formed in a circular shape, The above second hole is an aperture device formed in an oval shape.

7. In paragraph 1, Including a substrate placed on the above base, The above driving unit is an aperture device including a magnet disposed on the rotor and a coil disposed on the substrate and interacting with the magnet.

8. In paragraph 1, including a ball disposed between the base and the rotor, An aperture device including a base sheet disposed between the blade and the base.

9. Printed circuit board; An image sensor disposed on the above printed circuit board; A lens driving device arranged on the above printed circuit board; and A camera device comprising an aperture device according to any one of claims 1 to 8, which is arranged on the lens driving device.

10. Body; The camera device of claim 9 arranged in the above body; and An optical device comprising a display disposed on the main body and outputting at least one of images and videos captured by the camera device.

Images