Aperture device, camera device and optical device

Abstract

An aperture device according to the present embodiment comprises: a fixed portion; a movable portion disposed on the fixed portion; a driving portion that moves the movable portion; and a plurality of blades forming blade holes having a size that changes according to the movement of the movable portion, wherein the driving portion includes a magnet disposed on the movable portion, and the magnet is formed with a ring shape in which N and S poles alternate, and the aperture device may include yokes overlapping the boundaries between the N and S poles in the optical axis direction.

Description

Aperture devices, camera devices and optical instruments

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

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

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

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

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

[0006] In order to solve the above technical problem, an aperture device according to an embodiment of the present invention includes a fixed part; a moving part arranged on the fixed part; a driving part that moves the moving part; and a plurality of blades that form blade holes whose sizes change according to the movement of the moving part, wherein the driving part includes a magnet arranged on the moving part, and the magnet may include a yoke formed in a ring shape with alternating N and S poles and overlapping a boundary surface of the N and S poles in the direction of the optical axis.

[0007] The above yoke may include a plurality of yokes spaced apart from each other in the circumferential direction on the moving part, and the moving part may include a plurality of holes in which the yokes are arranged.

[0008] The above yoke can be placed in the central region in a direction perpendicular to the optical axis direction of the magnet.

[0009] The thickness of the magnet in the optical axis direction may be greater than the thickness of the yoke in the optical axis direction, and the thickness of the magnet in the direction perpendicular to the optical axis direction may be greater than the thickness of the yoke in the direction perpendicular to the optical axis direction.

[0010] The thickness of the moving part in the optical axis direction may be smaller than the sum of the thickness of the magnet in the optical axis direction and the thickness of the yoke in the optical axis direction.

[0011] The above moving part includes an escape part formed recessed on the outer surface, and the hole of the moving part may not overlap with the escape part in a direction perpendicular to the optical axis direction.

[0012] The fixed part includes a first protrusion coupled with the blade, the moving part includes a second protrusion coupled with the blade, and the hole of the moving part may not overlap with the first protrusion and the second protrusion in a direction perpendicular to the optical axis direction.

[0013] The above yoke can be positioned to face the above magnet.

[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 disposed on the image sensor; 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] Through this embodiment, the camera function of a smartphone can be used without performance limitations even in a dark environment.

[0017] Additionally, the sensor, magnet, and coil can be efficiently placed in an ultra-thin aperture device.

[0018] Fig. 1 is a perspective view of an aperture device according to the present embodiment.

[0019] Fig. 2 is an exploded perspective view of an aperture device according to the present embodiment.

[0020] Figure 3 is an exploded perspective view of a yoke, a moving part, and a magnet according to a modified example of the present invention.

[0021] Figure 4 is a cross-sectional view of a yoke, a moving part, and a magnet combined according to a modified example of the present invention.

[0022] Figure 5 is a drawing for explaining the arrangement of the magnet and yoke according to the present embodiment.

[0023] Figure 6 is an enlarged view of area A of Figure 5.

[0024] Figure 7 is a cross-sectional view of a yoke, a moving part, and a magnet combined according to another modified example of the present invention.

[0025] Fig. 8 is an exploded perspective view of a camera device according to the present embodiment.

[0026] Fig. 9 is a perspective view of an optical device according to the present embodiment.

[0027] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0028] 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.

[0029] In addition, terms (including technical and scientific terms) used in this embodiment may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which this embodiment belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0030] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0031] 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.

[0032] Additionally, in describing the components of this embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0033] 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.

[0034] 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.

[0035] The 'optical axis direction' used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0036] 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'.

[0037] 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.

[0038]

[0039] Hereinafter, the configuration of the aperture device according to the present embodiment will be described with reference to FIGS. 1 and 2. The description of the configuration included in the aperture device according to the modified example of the present invention illustrated in FIGS. 3 to 6 and the aperture device according to another modified example of the present invention illustrated in FIG. 7 will omit any description that overlaps with the description of the configuration included in the aperture device according to the present embodiment illustrated in FIGS. 1 and 2, and focus on the differences.

[0040] FIG. 1 is a perspective view of an aperture device according to the present embodiment, FIG. 2 is an exploded perspective view of an aperture device according to the present embodiment, FIG. 3 is an exploded perspective view of a yoke, a moving part, and a magnet according to a modified example of the present invention, FIG. 4 is a cross-sectional view of a yoke, a moving part, and a magnet in a combined state according to a modified example of the present invention, FIG. 5 is a drawing for explaining the arrangement of a magnet and a yoke according to the present embodiment, FIG. 6 is an enlarged view of area A of FIG. 5, FIG. 7 is a cross-sectional view of a yoke, a moving part, and a magnet in a combined state according to another modified example of the present invention, FIG. 8 is an exploded perspective view of a camera device according to the present embodiment, and FIG. 9 is a perspective view of an optical device according to the present embodiment.

[0041] The aperture device (100) may be an aperture. The aperture device (100) can control the amount of light passing through the lens. The aperture device (100) can control the amount of light incident on the image sensor (60).

[0042] The aperture device (100) can be placed on the lens. The aperture device (100) can be placed on the lens. The aperture device (100) can be combined with the lens. The aperture device (100) can be fixed to the lens. The aperture device (100) can move integrally with the lens. The aperture device (100) can move together with the lens. The aperture device (100) can move in the optical axis direction together with the lens.

[0043] The aperture device (100) may include a fixed member (110). The fixed member (110) may be a stator. The fixed member (110) may be a part that is relatively fixed with respect to the moving member (120). The fixed member (110) may movably support the moving member (120).

[0044] The aperture device (100) may include a base (111). The fixed part (110) may include the base (111). The base (111) may be referred to as a housing. The base (111) may be coupled to a cover (112). The base (111) may accommodate a moving part (120). The base (111) may movably support the moving part (120).

[0045] The base (111) may include a first protrusion (113). The first protrusion (113) may protrude upward from the upper surface of the base (111). The first protrusion (113) may be coupled with a blade (140).

[0046] The aperture device (100) may include a cover (112). The fixed part (110) may include the cover (112). The cover (112) may be placed on the base (111). The cover (112) may be placed on the base (111). The cover (112) may accommodate the moving part (120) therein. The cover (112) may include an upper plate and a side plate extending from the upper plate.

[0047] The aperture device (100) may include a moving part (120). The moving part (120) may be a rotor. The moving part (120) may be a rotating body. The moving part (120) may be a movable part. The moving part (120) may be a mover. The moving part (120) may be a mover. The moving part (120) may be a carrier.

[0048] The moving part (120) can be placed on the fixed part (110). The moving part (120) can be placed on the fixed part (110). The moving part (120) can be movably placed on the fixed part (110). The moving part (120) can be rotatably placed on the fixed part (110). The moving part (120) can be placed on the base (111). The moving part (120) can be placed on the base (111). The moving part (120) can be movably placed on the base (111). The moving part (120) can be placed inside the base (111). The moving part (120) can be placed inside the cover (112). The moving part (120) can rotate inside the base (111). The moving part (120) can rotate inside the cover (112). The moving part (120) can move the blade (140). The moving part (120) can move together with the blade (140).

[0049] The moving part (120) may include a second protrusion (121). The second protrusion (121) may protrude upward from the body of the moving part (120). The second protrusion (121) may be formed on the upper surface of the body of the moving part (120). The second protrusion (121) may be coupled with the blade (140). Through this, when the moving part (120) moves, the blade (140) may also move together.

[0050] The moving part (120) may include an escape part (122). The escape part (122) may be formed by being recessed into the outer surface of the body of the moving part (120). The escape part (122) may be an area for escaping the first protrusion (113) of the base (111) when the moving part (120) moves.

[0051] According to a variation, the moving part (220) may include a hole (221) in which a yoke (225) is arranged. The hole (221) may be in a form that penetrates from the upper surface to the lower surface of the moving part (220). The hole (221) may include a plurality of holes (221) spaced apart from each other in the circumferential direction on the moving part (220). The hole (221) may have a shape corresponding to the shape of the yoke (225). The hole (221) may be circular. When the yoke (225) is arranged in the hole (221), it may be fixed with an adhesive. By arranging the yoke (225) in the hole (221), the thickness in the optical axis direction when the moving part (220) and the yoke (225) are combined can be reduced. According to another variation illustrated in FIG. 7, the hole (221) of the moving part (220) may be modified into a groove structure. When the hole (221) of the moving part (220) has a home structure, the yoke (225) may come into contact with one surface of the moving part (220) and may not come into contact with the magnet (231).

[0052] The hole (221) may not overlap with the escape part (222) of the moving part (220) in a direction perpendicular to the optical axis. The escape part (222) of the moving part (220) has a structure in which the first protrusion (113) reciprocates the escape part (222) when the moving part (220) rotates. The hole (221) may not overlap with the first protrusion (113) of the fixed part (110) in a direction perpendicular to the optical axis. Since the area where the escape part (222) of the moving part (220) is formed has a thin width in the direction perpendicular to the optical axis, the hole (221) may be formed in an area where the escape part (222) is not formed. Although the second protrusion of the moving part (220) that is coupled with the second hole of the blade (140) is not shown in FIG. 3, the hole (221) of the moving part (220) may not overlap with the second protrusion in a direction perpendicular to the optical axis.

[0053] According to another variation, if the width in the direction perpendicular to the optical axis of the moving part (220) is wide, the hole (221) can overlap with the escape part (222) of the moving part (220) in the direction perpendicular to the optical axis. In addition, the hole (221) can overlap with the second protrusion of the moving part (220) in the direction perpendicular to the optical axis.

[0054] The yoke (225) may overlap with the magnet (231) in the optical axis direction. The yoke (225) may be arranged to overlap with the boundary surface of the different poles of the magnet (231) in the optical axis direction. For example, if the magnet (231) is a ring-shaped magnet in which four N poles and four S poles are alternately arranged, there may be four yokes (225). The yoke (225) may be arranged between the boundary surfaces of different poles having weak magnetic forces to strengthen the magnetic force. The yoke (225) may be circular. The yoke (225) may have various shapes, such as a square shape.

[0055] When the yoke (225) is placed on the upper surface of the moving part (220), it may protrude from the upper surface of the moving part (220). When the yoke (225) is placed on the upper surface of the moving part (220), it may be placed without a step on the upper surface of the moving part (220). When the magnet (231) is structured to be placed in a groove formed on the lower surface of the moving part (220), the lower surface of the yoke (225) may face the upper surface of the magnet (231). One surface of the yoke (225) and one surface of the magnet (231) may be in contact.

[0056] Referring to FIGS. 4 to 6, the arrangement relationship of the moving part (220), the yoke (225), and the magnet (231) will be described. The thickness (b) of the yoke (225) in the optical axis direction can satisfy about 0.15 mm to about 0.2 mm. The thickness (q) of the yoke (225) in the direction perpendicular to the optical axis direction can satisfy about 0.8 mm to about 1.0 mm. If the thickness (b) of the yoke (225) in the optical axis direction and the thickness (q) in the direction perpendicular to the optical axis direction are less than the lower limit, the effect on the strengthening of the magnetic force may be minimal, and if they are greater than the upper limit, there is a problem in that the durability of the moving part (220) is weakened.

[0057] The thickness (c) of the magnet (231) in the optical axis direction can satisfy about 0.3 mm to about 0.7 mm, and preferably can satisfy about 0.5 mm. The thickness (d) in the direction perpendicular to the optical axis direction of the magnet (231) can satisfy about 1.6 mm. If the thickness (c) in the optical axis direction of the magnet (231) and the thickness (d) in the direction perpendicular to the optical axis direction are less than the lower limit, there is a problem that a breakage phenomenon occurs when the magnet is stimulated, and if it is greater than the upper limit, there is a problem that the aperture device becomes larger.

[0058] The thickness (a) of the moving part (220) in the optical axis direction can satisfy about 0.5 mm. The thickness (a) of the moving part (220) in the optical axis direction can be smaller than the sum of the thickness (b) of the yoke (225) in the optical axis direction and the thickness (c) of the magnet (231) in the optical axis direction. Through this, the thickness in the optical axis direction can be reduced when the moving part (220), the yoke (225), and the magnet (231) are combined.

[0059] The thickness (c) of the magnet (231) in the direction of the optical axis may be greater than the thickness of the yoke (225) in the direction of the optical axis. The thickness (q) of the yoke (225) in the direction perpendicular to the optical axis may be in the range of 40% to 60% of the thickness (d) of the magnet (231) in the direction perpendicular to the optical axis. In the direction perpendicular to the optical axis, the yoke (225) may be arranged in the central region of the magnet (231).

[0060] The shortest distance (r) from the outer surface of the yoke (225) to the inner surface of the moving part (220) or the magnet (231) can satisfy about 0.3 mm to about 0.4 mm. The shortest distance (p) from the outer surface of the yoke (225) to the outer surface of the moving part (220) or the magnet (231) can satisfy about 0.3 mm to about 0.4 mm. When the value is less than the lower limit of the above numerical range for the arrangement relationship between the yoke (225), the moving part (220), and the magnet (231), there is a problem that the influence on the strengthening of the magnetic force is minimal, and when the value exceeds the upper limit, there is a problem that the durability of the moving part (220) and the magnet (231) is weakened. The above numerical values ​​may differ by ±5% due to manufacturing and assembly errors.

[0061]

[0062] When the moving part (120) moves, the blade (140) can pivot relative to the fixed part (110). The blade (140) can rotate and move linearly at the point where it meets the fixed part (110). The blade (140) can move linearly at the point where it meets the moving part (120).

[0063] The aperture device (100) may include a driving unit (130). The driving unit (130) may move the moving unit (120). The driving unit (130) may move the blade (140). The driving unit (130) may move the moving unit (120) through electromagnetic interaction. The driving unit (130) may include a magnet (250) and a coil (133).

[0064] The aperture device (100) may include a magnet (131). The driving unit (130) may include a magnet (131). The magnet (131) may be disposed on the moving unit (120). The magnet (131) may be disposed on the moving unit (120). The magnet (131) may have a ring shape. The magnet (131) may have a shape including an opening. The magnet (131) may have N and S poles alternately disposed along a circumferential direction. The magnet (131) may be coupled to the moving unit (120). The magnet (131) may be fixed to the moving unit (120). The magnet (131) may be bonded to the moving unit (120) with an adhesive.

[0065] The magnet (131) is movable. The magnet (131) can move through interaction with the coil (133). The magnet (131) can move integrally with the moving part (120). The magnet (131) can move together with the moving part (120). The magnet (131) can be placed on the lower surface of the moving part (120).

[0066]

[0067] *

[0068] The aperture device (100) may include a substrate (132). The substrate (132) may be disposed on the base (111). The substrate (132) may be disposed on the base (111). The substrate (132) may be disposed between the base (111) and the moving part (120). A coil (133) may be disposed on the substrate (132). The coil (133) may be formed on the substrate (132). For example, the coil (133) may be formed as a pattern coil on the substrate (132).

[0069] The substrate (132) may be electrically connected to the substrate of the lens driving device (20). Through this, the substrate (132) may receive power from the printed circuit board (50). Although not shown in the drawing, the substrate (132) of the aperture device (100) and the substrate of the lens driving device (20) may be directly connected. Alternatively, a separate conductive member may be provided that connects the substrate (132) of the aperture device (100) and the substrate of the lens driving device (20). Alternatively, the substrate (132) of the aperture device (100) may be directly connected to the printed circuit board (50) without being connected to the substrate of the lens driving device (20).

[0070] The aperture device (100) may include a coil (133). The driving unit (130) may include the coil (133). The coil (133) may be disposed on the fixing unit (110). The coil (133) may be disposed on the substrate (132). The coil (133) may be coupled to the substrate (132). The coil (133) may be soldered to the substrate (132). The coil (133) may be electrically connected to the substrate (132). The coil (133) may be formed integrally with the substrate (132). The coil (133) may be formed as a pattern coil on the substrate (132). The coil (133) may be disposed on the base (111). The coil (133) may be disposed on the base (111). The coil (133) may be disposed within the cover (112).

[0071] The coil (133) can be positioned corresponding to the magnet (131). The coil (133) can overlap the magnet (131). The coil (133) can overlap the magnet (131) in the optical axis direction. The coil (133) can face the magnet (131). The coil (133) can face the magnet (250). The coil (133) can interact with the magnet (131). The coil (133) can electromagnetically interact with the magnet (131). When current is applied to the coil (133), the magnet (131) can move due to the interaction between the electromagnetic field of the coil (133) and the electromagnetic field of the magnet (131). The coil (133) can move the magnet (131). The coil (133) can remain relatively fixed when the magnet (131) moves.

[0072] As a variation, the coil (133) may be placed on the moving part (120) and the magnet (131) may be placed on the fixed part (110). The coil (133) may move together with the moving part (120) and the magnet (131) may be fixed.

[0073] The aperture device (100) may include a sensor (not shown). The driving unit (130) may include a sensor. The sensor may be disposed on the substrate (132). The sensor may be electrically connected to the substrate (132). The sensor may include a plurality of terminals (162) connected to the substrate (132). The sensor may include four terminals (162) connected to the substrate (132). The sensor may detect a magnet (131). The sensor may be a Hall sensor. The sensor may detect the magnetic force of the magnet (131). The sensor may be disposed at a position corresponding to the magnet (131). The sensor may overlap the magnet (131) in the optical axis direction. Control of the blade (140) may be fed back in real time through the position of the magnet (131) detected by the sensor. That is, the blade (140) may be feedback-controlled in real time by the sensor.

[0074]

[0075] The aperture device (100) may include a blade (140). The blade (140) may be a member that blocks light. The blade (140) may be a light-blocking member. The blade (140) may be placed on a fixed member (110). The blade (140) may be placed on a base (111). The blade (140) may be placed inside a cover (112). The blade (140) may be placed on a moving member (120). The blade (140) may move together with the moving member (120). That is, when the moving member (120) moves, the blade (140) may also move together.

[0076] The blade (140) may include a first part coupled with the fixed part (110) and a second part coupled with the moving part (120). Through this, when the moving part (120) moves, the blade (140) can pivotally move with respect to the fixed part (110). The blade (140) may include a first hole into which a first protrusion (113) of the fixed part (110) is inserted. The blade (140) may include a second hole into which a second protrusion (121) of the moving part (120) is inserted. The blade (140) can rotate and move linearly at a portion where it meets the fixed part (110). The blade (140) can move linearly at a portion where it meets the moving part (120).

[0077] The aperture device (100) may include a blade hole. The blade (140) may include a blade hole formed by a plurality of blades (140). The blade hole may be changed in size or shape by the plurality of blades (140). Light may pass through the blade hole.

[0078] The blade (140) may include a plurality of blades. The blade (140) may include eight blades. In this case, the eight blades (140) may be arranged in two layers of four blades each. The plurality of blades (140) may form blade holes whose size changes according to the movement of the moving part (120). The blade holes may be formed by the inner peripheral surfaces (141) of the plurality of blades. The blade (140) may be provided in an odd number. The blade (140) may include six blades. The blade (140) may include twelve blades. The blade (140) may include six to twelve blades.

[0079] The blade (140) may include an inner surface. The inner surface may form a blade hole through which light passes. The blade (140) may include an inner surface forming a blade hole. The inner surface may be an inner surface. The inner surface may be an inner surface. The inner surface of the blade (140) may include a plurality of circular arc regions and an interpolation region formed between the plurality of circular arc regions.

[0080]

[0081] In this embodiment, when current is applied to the coil (133) of the aperture device (100), the blade (140) can move. That is, by applying current to the coil (133) of the aperture device (100), the shape of the blade hole formed by the blade (140) can be changed. In other words, by applying current to the coil (133), the F number of the aperture device (100) can be changed.

[0082] The aperture device (100) may include a ball (150). The ball (150) may include a plurality of balls. The ball (150) may include four balls. The ball (150) may be disposed between the fixed part (110) and the moving part (120). The ball (150) may be disposed between the base (111) and the moving part (120). The ball (150) may be disposed on the base (111). The ball (150) may be in contact with the base (111). The ball (150) may move along the base (111). The ball (150) may move along a groove of the base (111).

[0083] The ball (150) can be placed on the moving part (120). The ball (150) can come into contact with the moving part (120). The ball (150) can move along the moving part (120). The ball (150) can move along the groove of the moving part (120). The ball (150) can be placed between the groove of the base (111) and the groove of the moving part (120). The groove of the base (111) and the groove of the moving part (120) can be rails.

[0084] The ball (150) can guide the movement of the moving part (120) in the circumferential direction. That is, the ball (150) can guide the moving part (120) to rotate around the optical axis. The ball (150) can limit the movement of the moving part (120) to only rotation around the optical axis.

[0085] The aperture device (100) may include a yoke (160). The yoke (160) may be disposed on the fixing member (110). The yoke (160) may be disposed on the base (111). The yoke (160) may be disposed on the lower plate of the base (111). The yoke (160) may be disposed on the upper surface of the lower plate of the base (111). The yoke (160) may be disposed on the lower surface of the lower plate of the base (111).

[0086] The yoke (160) can be positioned corresponding to the magnet (131). The yoke (160) can overlap the magnet (131) in the optical axis direction. An attractive force can be applied between the yoke (160) and the magnet (131). Through this, the ball (150) can be pressed between the moving part (120) and the fixed part (110). The ball (150) can be pressed between the moving part (120) and the base (111) by the attractive force between the yoke (160) and the magnet (131).

[0087]

[0088] Below, the configuration of the camera device according to the present embodiment is described with reference to the drawings.

[0089] Fig. 8 is a perspective view of a camera device according to the present embodiment.

[0090] The camera device (10) may include a lens module. The lens module may include at least one lens. The lens may be positioned corresponding to the image sensor (75). The lens module may include a lens and a lens barrel. The lens module may be coupled to a holder of the lens driving device (20). The lens module may be coupled to the holder by screws and / or adhesive. The lens module may be moved integrally with the holder.

[0091] 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 (75). 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 (75). The filter (30) may be arranged on the sensor base (40). Alternatively, the filter (30) may be arranged on the base of the lens driving device (20). The filter (30) may include an infrared filter. The infrared filter may block light of an infrared region from being incident on the image sensor (75).

[0092] The camera device (10) may include a sensor base (40). The sensor base (40) may be disposed between the lens driving device (20) and the printed circuit board (50). The sensor base (40) may include a protrusion (41) on which a filter (30) is disposed. An opening may be formed in a portion of the sensor base (40) on which the filter (30) is disposed so that light passing through the filter (30) may be incident on the image sensor (75).

[0093] The camera device (10) may include a printed circuit board (PCB) (50). The printed circuit board (50) may be a substrate or a circuit board. A lens driving device (20) may be disposed on the printed circuit board (50). A sensor base (40) may be disposed between the printed circuit board (50) and the lens driving device (20). The printed circuit board (50) may be electrically connected to the lens driving device (20). An image sensor (75) 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 (75) into an electrical signal and transmit it to an external device.

[0094] The camera device (10) may include an image sensor (75). The image sensor (75) may be configured to form an image by incident light passing through a lens and a filter (30). The image sensor (75) may be mounted on a printed circuit board (50). The image sensor (75) may be electrically connected to the printed circuit board (50). For example, the image sensor (75) may be coupled to the printed circuit board (50) using surface mounting technology (SMT). As another example, the image sensor (75) may be coupled to the printed circuit board (50) using flip chip technology.

[0095] The image sensor (75) can be arranged so that its optical axis is aligned with that of the lens. That is, the optical axis of the image sensor (75) and the optical axis of the lens can be aligned. The image sensor (75) can convert light irradiated to the effective image area of ​​the image sensor (75) into an electrical signal. The image sensor (75) can be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0096] 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.

[0097] The camera device (10) may include a control unit (80). The control unit (80) may be disposed on a printed circuit board (50). The control unit (80) may be electrically connected to a coil of a lens driving device (20). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the coil. The control unit (80) may control the lens driving device (20) to perform an autofocus function and / or a shake correction function. Furthermore, the control unit (80) may perform autofocus feedback control and / or shake correction feedback control for the lens driving device (20).

[0098] 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.

[0099]

[0100] Below, the configuration of the optical device according to the present embodiment is described with reference to the drawings.

[0101] Fig. 9 is a perspective view of an optical device according to the present embodiment.

[0102] 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.

[0103] 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.

[0104] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. Fixed government; A moving part arranged on the above fixed part; a driving unit that moves the above moving unit; and It comprises a plurality of blades forming blade holes whose size changes according to the movement of the moving part, The above driving part includes a magnet arranged on the moving part, The above magnet is formed in a ring shape with alternating N and S poles, An aperture device including a yoke that overlaps the boundary surface of the N pole and the S pole in the direction of the optical axis.

2. In paragraph 1, The above yoke includes a plurality of yokes spaced apart from each other in the circumferential direction on the above moving part, The above moving part is an aperture device including a plurality of holes in which the yoke is placed.

3. In paragraph 1, The above yoke is an aperture device arranged in the central region in a direction perpendicular to the optical axis direction of the magnet.

4. In paragraph 1, The thickness of the magnet in the optical axis direction is greater than the thickness of the yoke in the optical axis direction, An aperture device in which the thickness of the magnet in the direction perpendicular to the optical axis direction is greater than the thickness of the yoke in the direction perpendicular to the optical axis direction.

5. In paragraph 1, An aperture device in which the thickness of the moving part in the optical axis direction is smaller than the sum of the thickness of the magnet in the optical axis direction and the thickness of the yoke in the optical axis direction.

6. In paragraph 1, The above moving part includes an escape part formed recessed on the outer surface, An aperture device in which the hole of the above moving part does not overlap with the escape part in a direction perpendicular to the optical axis direction.

7. In paragraph 1, The above fixed part includes a first protrusion that engages with the blade, The above moving part includes a second protrusion that engages with the blade, An aperture device in which the hole of the above moving part does not overlap with the first protrusion and the second protrusion in a direction perpendicular to the optical axis.

8. In paragraph 1, The above yoke is an aperture device arranged to face the above magnet.

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

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