Aperture device, camera device and optical device

Abstract

An aperture device according to the present embodiment comprises: a fixed unit; a moving unit arranged on the fixed unit; a magnet and a coil for moving the moving unit; a plurality of blades having a hole that changes in size according to the movement of the moving unit; a first yoke coupled to the fixed unit; and a second yoke facing the first yoke, wherein the first yoke includes a first body and a plurality of first teeth protruding from the first body, and the second yoke includes a second body and a plurality of second teeth protruding from the second body.

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 disposed on the fixed part; a magnet and a coil for moving the moving part; a plurality of blades forming holes whose sizes change according to the movement of the moving part; a first yoke coupled to the fixed part; and a second yoke opposite the first yoke, wherein the first yoke includes a first body and a plurality of first teeth protruding from the first body, and the second yoke includes a second body and a plurality of second teeth protruding from the second body.

[0007] The plurality of first teeth of the first yoke and the plurality of second teeth of the second yoke can be arranged so that the different poles of the magnets face each other.

[0008] The first tooth of the first yoke and the second tooth of the second yoke may not overlap in a direction perpendicular to the optical axis.

[0009] The above magnet is a ring-shaped magnet with alternating N and S poles, and the most protruding part of the first tooth of the first yoke can be arranged on the center line of the N pole of the magnet, and the most protruding part of the second tooth of the second yoke can be arranged on the center line of the S pole of the magnet.

[0010] The first tooth of the first yoke and the second tooth of the second yoke may have a triangular shape.

[0011] The coil may be arranged in the first body of the first yoke and the second body of the second yoke.

[0012] The fixed portion includes a first protrusion that engages with a first hole of the plurality of blades, the moving portion includes a second protrusion that engages with a second hole of the plurality of blades, and the size of the first hole may be smaller than the size of the second hole.

[0013] The above moving part includes a first part in which the second protrusion is formed, a second part coupled with the fixed part, and a third part coupled with the magnet, and the second part can be formed to protrude in a direction perpendicular to the optical axis more than the first part and the third part.

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

[0015] The lens barrel includes a first side plate connected to the first opening, a second side plate connected to the second opening, and an upper plate connecting the first side plate and the second side plate, and the coil may be arranged on an upper surface of the upper plate of the lens barrel.

[0016] The lens barrel may include a coil receiving portion formed recessed in the upper surface of the upper plate, in which the coil is placed.

[0017] The coil may include a plurality of coils spaced apart from each other and may include a substrate disposed on an upper surface of the upper plate of the lens barrel.

[0018] The lens barrel may include a sensor disposed on the upper plate, and the sensor may include a sensor receiving portion recessed into an upper surface of the upper plate of the lens barrel.

[0019] 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.

[0020] 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.

[0021] Through this embodiment, the magnet and the yoke can be aligned in the correct position, so there is no need for separate alignment during the assembly process, and operation can be performed without a separate control system and sensor for fixing and aligning the position of the coil.

[0022] In addition, the number of magnet polarities and the number of yokes can be designed to match the blade drive step for adjusting the amount of light in the aperture to enable precise drive.

[0023] In addition, since the current applied to the coil can be driven by applying pulse current, power consumption can be minimized.

[0024] Additionally, by placing the coil outside the lens barrel, the wiring process for applying current to the coil can be simplified.

[0025] Additionally, by placing the coil on the outside of the lens barrel, problems with lens alignment due to heat generated from the coil can be prevented, and the internal space of the lens barrel can be utilized more efficiently.

[0026] Fig. 1 is a perspective view of an aperture device according to the first embodiment.

[0027] Fig. 2 is a perspective view of the aperture device according to the first embodiment from another angle.

[0028] Figure 3 is an exploded perspective view of an aperture device according to the first embodiment.

[0029] Fig. 4 is an exploded perspective view of the aperture device according to the first embodiment from another angle.

[0030] Fig. 5 is a perspective view of a blade of an aperture device according to the first embodiment.

[0031] Fig. 6 is a perspective view of a moving part of an aperture device according to the first embodiment.

[0032] Fig. 7 is a drawing for explaining an aperture device according to the first embodiment.

[0033] Fig. 8 is a perspective view of a lens module in which an aperture device according to the second embodiment is arranged.

[0034] Fig. 9 is an exploded perspective view of a lens module in which an aperture device according to the second embodiment is arranged.

[0035] Fig. 10 is an exploded perspective view of a lens module having an aperture device according to the second embodiment, viewed from another angle.

[0036] Fig. 11 is a cross-sectional view of a lens module in which an aperture device according to the second embodiment is arranged.

[0037] FIG. 12 and FIG. 13 are drawings for explaining the arrangement of coils and sensors of the aperture device according to the second embodiment.

[0038] Fig. 14 is a cross-sectional view of a lens module in which an aperture device according to the third embodiment is arranged.

[0039] Fig. 15 is a perspective view of a camera device according to the present embodiment.

[0040] Fig. 16 is a perspective view of an optical device according to the present embodiment.

[0041] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0042] 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.

[0043] 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.

[0044] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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'.

[0051] 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.

[0052]

[0053] FIG. 1 is a perspective view of an aperture device according to the first embodiment of the present invention, FIG. 2 is a perspective view of the aperture device according to the first embodiment of the present invention seen from another angle, FIG. 3 is an exploded perspective view of the aperture device according to the first embodiment of the present invention, FIG. 4 is an exploded perspective view of the aperture device according to the first embodiment of the present invention seen from another angle, FIG. 5 is a perspective view of a blade of the aperture device according to the first embodiment of the present invention, FIG. 6 is a perspective view of a moving part of the aperture device according to the first embodiment of the present invention, and FIG. 7 is a drawing for explaining the aperture device according to the first embodiment of the present invention.

[0054] 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 (75). The aperture device (100) can control the size of the hole through which light passes.

[0055] 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.

[0056] 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).

[0057] 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.

[0058] 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 move the blade (140). The moving part (120) can move together with the blade (140).

[0059]

[0060] The fixed part (110) may be ring-shaped. The fixed part (110) may have a shape including an opening. A plurality of first protrusions (111) spaced apart from each other may be formed on one surface of the fixed part (110). The plurality of first protrusions (111) may be formed spaced apart from each other in a circumferential direction. The plurality of first protrusions (111) may be formed spaced apart from each other at equal intervals on one surface of the fixed part (110). The number of the plurality of first protrusions (111) may be formed according to the number of blades (140). A first hole (141) of the blade (140) may be inserted into each of the plurality of first protrusions (111). The first hole (141) of the blade (140) may be formed in a shape corresponding to the shape of the first protrusion (111) of the fixed part (110).

[0061] The moving part (120) may be ring-shaped. The moving part (120) may have a shape including an opening. A plurality of second protrusions (121) spaced apart from each other may be formed on one surface of the moving part (120). The plurality of second protrusions (121) may be formed spaced apart from each other along a circumferential direction. The plurality of second protrusions (121) may be formed spaced apart from each other at equal intervals on one surface of the moving part (120). The number of the plurality of second protrusions (121) may be formed according to the number of blades (140). A second hole (142) of the blade (140) may be inserted into each of the plurality of second protrusions (121). The second hole (142) of the blade (140) may be formed larger than the second protrusions (121) of the moving part (120).

[0062] The moving part (120) may include a first part (21) in which a second protrusion (121) is formed, a first part (21) coupled with a fixed part (110), and a third part (23) coupled with a magnet (130). The first part (21) and the second part (22) of the moving part (120) may form a step. The second part (22) and the third part (23) of the moving part (120) may form a step. The second part (22) may be formed to protrude in a direction perpendicular to the optical axis more than the first part (21) and the third part (23).

[0063] A second protrusion (121) may be formed on the first surface (122), which is the upper surface of the first part (21). The second surface (123), which is the side surface of the first part (21), may be perpendicular to the first surface (122), which is the upper surface of the first part (21). The first part (21) of the moving part (120) may be inserted into the opening of the fixed part (110). The first part (21) of the moving part (120) may be inserted into the opening of the fixed part (110) and positioned so as to be movable. The first part (21) of the moving part (120) may be inserted into the opening of the fixed part (110) and positioned so as to be rotatably rotatably.

[0064] The third surface (124), which is the upper surface of the second part (22), may face in the same direction as the first surface of the first part (21). The fourth surface (125), which is the side surface of the second part (22), may form a perpendicular to the third surface (124). The second surface (123) of the first part (21) may be arranged to face the inner surface of the fixed part (110). The second surface (123) of the first part (21) may be in contact with the inner surface of the fixed part (110). The third surface (124) of the second part (22) may be arranged to face the lower surface of the fixed part (110). The third surface (124) of the second part (22) may be in contact with the lower surface of the fixed part (110).

[0065] The fifth surface (126), which is a side surface of the third part (23), can form a vertical line with the lower surface of the second part (22). The fifth surface (126) of the third part (23) can face the same direction as the second surface (123) of the first part (21) and the fourth surface (125) of the second part (22). The lower surface of the third part (23) can be coupled with a magnet (130). The lower surface of the third part (23) can be bonded to the magnet (130) with an adhesive. According to another embodiment, the magnet (130) can be inserted into the opening of the third part (23) of the moving part (120). In this case, the upper surface of the magnet (130) can contact the lower surface of the second part (22), and the inner surface of the magnet (130) can contact the fifth surface (126) of the third part (23).

[0066]

[0067] The aperture device (100) may include a driving unit. The driving unit may move a moving unit (120). The driving unit may move a blade (140). The driving unit may move the moving unit (120) through electromagnetic interaction. The driving unit may include a magnet (130) and a coil. The driving unit may include a magnet (130), a first yoke (150), and a second yoke (160).

[0068] The aperture device (100) may include a magnet (130). The driving unit may include a magnet (130). The magnet (130) may be disposed on the moving unit (120). The magnet (130) may be disposed on the moving unit (120). The magnet (130) may have a ring shape. The magnet (130) may have a shape including an opening. The magnet (130) may have N and S poles alternately disposed along a circumferential direction. The magnet (130) may be coupled to the moving unit (120). The magnet (130) may be fixed to the moving unit (120). The magnet (130) may be bonded to the moving unit (120) with an adhesive.

[0069] The aperture device (100) may include a first yoke (150) and a second yoke (160). The first yoke (150) and the second yoke (160) may be driving units.

[0070] The first yoke (150) may include a first body (151) and a plurality of first teeth (152) protruding from the first body (151). The first body (151) may be formed in a ring shape. The first body (151) may have a shape including an opening. The first teeth (152) may be formed to extend in one direction from one side of the first body (151). The first teeth (152) may have a triangular shape. The first teeth (152) may be formed in a shape in which one side narrows in a direction away from the first body (151). The number of first teeth (152) may match the number of N poles of the magnet (130). The number of first teeth (152) may be smaller than the number of N poles of the magnet (130).

[0071] The second yoke (160) may include a second body (161) and a plurality of second teeth (162) protruding from the second body (161). The second body (161) may be formed in a ring shape. The second body (161) may have a shape including an opening. The second teeth (162) may be formed to extend in one direction from one side of the second body (161). The second teeth (162) may have a triangular shape. The second teeth (162) may be formed in a shape in which one side narrows in a direction away from the second body (161). The number of second teeth (162) may match the number of south poles of the magnet (130). The number of second teeth (162) may be the same as the number of first teeth (152). The number of second teeth (162) may be smaller than the number of S poles of the magnet (130).

[0072] A plurality of first teeth (152) of the first yoke (150) and a plurality of second teeth (162) of the second yoke (160) may be arranged to face different poles of the magnet (130). A plurality of first teeth (152) of the first yoke (150) and a plurality of second teeth (162) of the second yoke (160) may be arranged to alternate along the circumferential direction of the magnet (130). A plurality of first teeth (152) of the first yoke (150) and a plurality of second teeth (162) of the second yoke (160) may not overlap in a direction perpendicular to the optical axis.

[0073] The coil may be placed on the first yoke (150) and the second yoke (160). The coil may be wound on the first yoke (150) and the second yoke (160). The coil may be placed on the first body (151) of the first yoke (150) and the second body (161) of the second yoke (160). The first yoke (150) and the second yoke (160) may be magnetic.

[0074] When current is applied to the coil, the first yoke (150) and the second yoke (160) can become electromagnets. The first yoke (150) and the second yoke (160) on which the coil is wound can be solenoids. When current is applied to the coil, the first yoke (150) and the second yoke (160) can become electromagnets having different polarities. When current is applied to the coil, the first tooth (152) of the first yoke (150) and the second tooth (162) of the second yoke (160) can become electromagnets having different polarities from the polarities of the opposing magnets. When current is applied to the coil, the magnet (130) can be driven to rotate by one step due to the repulsive force of the yoke that has become the electromagnet. Here, one step may mean that the magnet (130) rotates 360 / N ° when the polarity is divided into N pieces.

[0075] The center line (L1) bisecting the first tooth (152) of the first yoke (150) may coincide with the center of an area having one polarity of the magnet (130). The center line (L2) bisecting the second tooth (162) of the second yoke (160) may coincide with the center of an area having one polarity of the magnet (130). The magnet (130) may be maintained in a state aligned with the first yoke (150) and the second yoke (160) not only when no current is applied to the coil but also after the moving part (120) has rotated by one step.

[0076] This allows the magnets and yokes to be aligned in the correct positions, eliminating the need for separate alignment during assembly and enabling operation without a separate control system or sensor for coil position fixation and alignment. Furthermore, the number of magnet polarities and the number of yokes can be designed to match the blade drive steps for adjusting the aperture's light intensity, enabling precise operation. Furthermore, the current applied to the coil can be pulsed, minimizing power consumption.

[0077]

[0078] 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 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.

[0079] The blade (140) may include a first hole (141) into which a first protrusion (111) of the fixed part (110) is inserted. The blade (140) may include a second hole (142) into which a second protrusion (121) of the movable part (120) is inserted. When the movable part (120) moves, the blade (140) may pivotally move with respect to the fixed part (110). The blade (140) may rotate and move linearly at a portion where it meets the fixed part (110). The blade (140) may move linearly at a portion where it meets the movable part (120).

[0080] The aperture device (100) may include a hole (143). The blade (140) may include a hole (143) formed by a plurality of blades (140). The hole (143) may be changed in size or shape by the plurality of blades (140). Light may pass through the hole (143).

[0081] The blade (140) may include a plurality of blades. The blade (140) may include six blades. The plurality of blades (140) may form a hole (143) whose size changes according to the movement of the moving part (120). The hole (143) may be formed by the inner peripheral surface (144) of the plurality of blades.

[0082] The blade (140) may include an inner surface (144). The inner surface (144) may form a hole (143) through which light passes. The blade (140) may include an inner surface (144) forming the hole (143). The inner surface (144) may be an inner surface. The inner surface (144) may be an inner surface. The inner surface (144) of the blade (140) may include a plurality of circular arc regions and an interpolation region formed between each of the plurality of circular arc regions.

[0083] When current is applied to the coil of the aperture device (100), the blade (140) can move. That is, when current is applied to the coil of the aperture device (100) and the moving part (120) moves, the shape of the hole (145) formed by the blade (140) can be changed. In other words, the F number of the aperture device (100) can be changed by applying current to the coil.

[0084]

[0085] Fig. 8 is a perspective view of a lens module having an aperture device arranged according to the second embodiment of the present invention, Fig. 9 is an exploded perspective view of a lens module having an aperture device arranged according to the second embodiment of the present invention, Fig. 10 is an exploded perspective view of a lens module having an aperture device arranged according to the second embodiment of the present invention from another angle, Fig. 11 is a cross-sectional view of a lens module having an aperture device arranged according to the second embodiment of the present invention, and Figs. 12 and 13 are drawings for explaining the arrangement of a coil and a sensor of an aperture device according to the second embodiment of the present invention. Fig. 14 is a cross-sectional view of a lens module having an aperture device arranged according to the third embodiment of the present invention.

[0086] In the description of the second and third embodiments described below, any description that overlaps with the description of the first embodiment is omitted.

[0087] The aperture device may be arranged in the lens barrel (10). The aperture device may be arranged inside the lens barrel (10). The aperture device may be arranged outside the lens barrel (10). A portion of the aperture device may be arranged inside the lens barrel (10), and the remainder of the aperture device may be arranged outside the lens barrel (10).

[0088] The lens barrel (10) may include a first opening (18) that opens upwardly and a second opening (19) that opens downwardly. The diameter of the first opening (18) may be smaller than the diameter of the second opening (19). The lens barrel (10) may include a first side plate (11) connected to the first opening (18), a second side plate (17) connected to the second opening (19), and an upper plate (12) that connects the first side plate (11) and the second side plate (17). The upper plate (12) of the lens barrel (10) may include an upper surface facing upwardly and a lower surface facing downwardly. The upper surface of the upper plate (12) of the lens barrel (10) may be referred to as a shoulder surface.

[0089]

[0090] The aperture device may include a fixed part (240) and a moving part (210). The fixed part (240) and the moving part (210) may be arranged inside the lens barrel (10). The fixed part (240) may be a stator. The fixed part (240) may be a part that is relatively fixed with respect to the moving part (210). The fixed part (240) may movably support the moving part (210). The moving part (210) may be a rotor. The moving part (210) may be a rotating body. The moving part (210) may be a movable part. The moving part (210) may be a mover. The moving part (210) may be a mover. The moving part (210) may be a carrier.

[0091] The moving part (210) can be placed on the fixed part (240). The moving part (210) can be placed on the fixed part (240). The moving part (210) can be movably placed on the fixed part (240). The moving part (210) can be rotatably placed on the fixed part (240). The moving part (210) can move the blade (250). The moving part (210) can move together with the blade (250).

[0092] The fixing member (240) may be ring-shaped. The fixing member (240) may have a shape including an opening. A plurality of first protrusions spaced apart from each other may be formed on one surface of the fixing member (240). The plurality of first protrusions may be formed spaced apart from each other along a circumferential direction. The plurality of first protrusions may be formed spaced apart from each other at equal intervals on one surface of the fixing member (240). The number of the plurality of first protrusions may be formed according to the number of blades (250). A first hole of the blade (250) may be inserted into each of the plurality of first protrusions. The first hole of the blade (250) may be formed in a shape corresponding to the shape of the first protrusion of the fixing member (240).

[0093] The moving part (210) may be ring-shaped. The moving part (210) may have a shape including an opening. A plurality of second protrusions spaced apart from each other may be formed on one surface of the moving part (210). The plurality of second protrusions may be formed spaced apart from each other along a circumferential direction. The plurality of second protrusions may be formed spaced apart from each other at equal intervals on one surface of the moving part (210). The number of the plurality of second protrusions may be formed according to the number of blades (250). A second hole of the blade (250) may be inserted into each of the plurality of second protrusions. The second hole of the blade (250) may be formed larger than the second protrusion of the moving part (210).

[0094]

[0095] The aperture device may include a driving unit. The driving unit may move a moving unit (210). The driving unit may move a blade (250). The driving unit may move the moving unit (210) through electromagnetic interaction. The driving unit may include a magnet (230) and a coil (280).

[0096] The aperture device may include a magnet (230). The driving unit may include a magnet (230). The magnet (230) may be disposed on the moving unit (210). The magnet (230) may be disposed on the moving unit (210). The magnet (230) may have a ring shape. The magnet (230) may have a shape including an opening. The magnet (230) may have N and S poles alternately disposed along a circumferential direction. The magnet (230) may be coupled to the moving unit (210). The magnet (230) may be fixed to the moving unit (210). The magnet (230) may be bonded to the moving unit (210) with an adhesive.

[0097] The magnet (230) is movable. The magnet (230) can move through interaction with the coil. The magnet (230) can move integrally with the moving part (210). The magnet (230) can move together with the moving part (210). The magnet (230) can be placed on the lower surface of the moving part (210).

[0098] The aperture device may include a coil (280). The driving unit may include the coil (280). The coil (280) may be disposed on a substrate (290). The coil (280) may be coupled to the substrate (290). The coil (280) may be soldered to the substrate (290). The coil (280) may be electrically connected to the substrate (290). The coil (280) may be formed integrally with the substrate (290). The coil (280) may be formed as a pattern coil (280) on the substrate (290).

[0099] The coil (280) may be placed on the upper plate (12) of the lens barrel (10). The coil (280) may be placed on the upper surface of the upper plate (12) of the lens barrel (10). The coil (280) may include a plurality of coils. The coil (280) may include four coils wound in a ring shape. The plurality of coils (280) may be placed spaced apart from each other.

[0100] The upper surface of the upper plate (12) of the lens barrel (10) may include a coil receiving portion (13) in which a coil (280) is placed. The coil receiving portion (13) may be formed by recessing the upper surface of the upper plate (12) of the lens barrel (10) according to the shape of the coil (280). A pin (15) facing the inner peripheral surface of the coil (280) may be placed in the coil receiving portion (13). The pin (15) may fix the position of the coil (280) in the coil receiving portion (13). The pin (15) may be placed at a position corresponding to a corner of the inner peripheral surface of the coil (280). A plurality of pins (15) spaced apart from each other may be placed in one coil receiving portion (13). Four pins (15) may be placed in one coil receiving portion (13).

[0101] The coil (280) can be positioned corresponding to the magnet (230). The coil (280) can overlap with the magnet (230). The coil (280) can overlap with the magnet (230) in the optical axis direction. The coil (280) can face the magnet (230). The coil (280) can face the magnet (230). The coil (280) can interact with the magnet (230). The coil (280) can electromagnetically interact with the magnet (230). When current is applied to the coil (280), the magnet (230) can move due to the interaction between the electromagnetic field of the coil (280) and the electromagnetic field of the magnet (230). The coil (280) can move the magnet (230). The coil (280) can remain relatively fixed when the magnet (230) moves.

[0102] Alternatively, the coil (280) may be placed on the moving part (210) and the magnet (230) may be placed on the fixed part (110). The coil (280) may move together with the moving part (210) and the magnet (230) may be fixed.

[0103] The aperture device may include a sensor (285). The driving unit may include the sensor (285). The sensor (285) may be disposed between coils that are spaced apart from each other. The sensor (285) may be disposed on a substrate (290). The sensor (285) may be electrically connected to the substrate (290). The sensor (285) may be disposed on an upper surface of an upper plate (12) of a lens barrel (10). The upper surface of the upper plate (12) of the lens barrel (10) may include a sensor receiving portion (14) in which the sensor (285) is disposed. The sensor receiving portion (14) may be formed to be recessed according to the shape of the sensor (285). An outer surface of the sensor (285) may be disposed to face an inner surface of the sensor receiving portion (14).

[0104] The sensor (285) can detect the magnet (230). The sensor (285) may be a Hall sensor. The sensor (285) can detect the magnetic force of the magnet (230). The sensor (285) may be positioned corresponding to the magnet (230). The sensor (285) may overlap the magnet (230) in the optical axis direction. The control of the blade (250) can be fed back in real time through the position of the magnet (230) detected by the sensor (285). That is, the blade (250) can be feedback-controlled in real time by the sensor (285).

[0105]

[0106] The aperture device may include a substrate (290). The substrate (290) may be electrically connected to the substrate (50) of the lens driving device (200). The substrate (290) may receive power from the printed circuit board (50). Although not shown in the drawing, the substrate (290) of the aperture device and the substrate (50) of the lens driving device (200) may be directly connected. Alternatively, a separate conductive member may be provided to connect the substrate (290) of the aperture device and the substrate (50) of the lens driving device (200). Alternatively, the substrate (290) of the aperture device may be directly connected to the printed circuit board (50) without being connected to the substrate (50) of the lens driving device (200).

[0107] The substrate (290) may be formed in a ring shape according to the shape of the upper plate (12) of the lens barrel (10). The substrate (290) may be arranged to cover the upper plate (12) of the lens barrel (10). Current may be applied to the coil (280) through the substrate (290). By arranging the coil (280) on the outside of the lens barrel (10), the length of the second side plate (17) of the lens barrel (10), i.e., the shoulder height of the lens barrel (10) may be reduced.

[0108] In addition, when the coil (280) is placed inside the lens barrel (10), there is a problem that a hole must be drilled in the lens barrel (10) to apply current to the coil (280) or the wiring process for applying current becomes complicated. In addition, a problem may occur in lens alignment due to heat generated from the coil (280). In the second embodiment, the above problem can be solved by placing the coil (280) outside the lens barrel (10), and the internal space of the lens barrel (10) can be utilized more efficiently.

[0109]

[0110] The aperture device may include a blade (250). The blade (250) may be a member that blocks light. The blade (250) may be a light-blocking member. The blade (250) may be placed on the fixed member (240). The blade (250) may be placed on the moving member (210). The blade (250) may move together with the moving member (210). That is, when the moving member (210) moves, the blade (250) may also move together.

[0111] The blade (250) can pivotally move with respect to the fixed part (240) when the moving part (210) moves. The blade (250) can include a first hole into which a first protrusion of the fixed part (240) is inserted. The blade (250) can include a second hole into which a second protrusion of the moving part (210) is inserted. The blade (250) can rotate and move linearly at a portion where it meets the fixed part (240). The blade (250) can move linearly at a portion where it meets the moving part (210).

[0112] The blade (250) may include a plurality of blades. For example, the blade (250) may include eight blades. The plurality of blades (250) may form holes whose size changes according to the movement of the moving part (210).

[0113] The blade (250) may include a hole formed by a plurality of blades (250). The hole may have a size or shape that can be changed by the plurality of blades (250). Light may pass through the hole. The hole may be formed by the inner peripheral surface of the plurality of blades. The blade (250) may include an inner peripheral surface. The inner peripheral surface may form a hole through which light passes. The blade (250) may include an inner peripheral surface that forms a hole. The inner peripheral surface may be an inner surface. The inner peripheral surface may be an inner surface. The inner peripheral surface of the blade (250) may include a plurality of circular arc regions and an interpolation region formed between each of the plurality of circular arc regions.

[0114] In the second and third embodiments, when current is applied to the coil of the aperture device, the blade (250) can move. That is, by applying current to the coil of the aperture device, the shape of the hole formed by the blade (250) can be changed. In other words, by applying current to the coil, the F-number of the aperture device can be changed.

[0115] The aperture device may include a yoke (275). The yoke (275) may be disposed on the moving part (210). The yoke (275) may be disposed on the fixed part (240). The yoke (275) may be disposed on the lower plate of the moving part (210). The yoke (275) may be disposed on the lower surface of the lower plate of the moving part (210). The yoke (275) may be disposed at a position corresponding to the magnet (230). The yoke (275) may overlap the magnet (230) in the optical axis direction. An attractive force may act between the yoke (275) and the magnet (230). Through this, magnetic leakage can be prevented and the magnetic force can be strengthened so that the magnetic force of the magnet (230) is concentrated in the direction toward the coil (280).

[0116]

[0117] Below, the configuration of the camera device according to the present embodiment is described with reference to the drawings.

[0118] Fig. 15 is a perspective view of a camera device according to the present embodiment.

[0119] 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 (200). The lens module may be coupled to the holder by screws and / or adhesive. The lens module may be moved integrally with the holder.

[0120] 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 (210) of the lens driving device (200). 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 (75).

[0121] The camera device (10) may include a sensor base (40). The sensor base (40) may be disposed between the lens driving device (200) 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).

[0122] 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 (200) 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 (200). The printed circuit board (50) may be electrically connected to the lens driving device (200). 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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 (330) of a lens driving device (200). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the coil (330). The control unit (80) may control the lens driving device (200) to perform an autofocus function and / or an image stabilization function. Furthermore, the control unit (80) may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device (200).

[0127] 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.

[0128]

[0129] Below, the configuration of the optical device according to the present embodiment is described with reference to the drawings.

[0130] Fig. 16 is a perspective view of an optical device according to the present embodiment.

[0131] 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.

[0132] 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.

[0133] 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; Magnet and coil for moving the above moving part; A plurality of blades forming holes whose size changes according to the movement of the moving part; A first yoke coupled to the above fixed part; and Including a second yoke opposite to the first yoke, The first yoke includes a first body and a plurality of first teeth protruding from the first body, The second yoke is an aperture device including a second body and a plurality of second teeth protruding from the second body.

2. In paragraph 1, An aperture device in which the plurality of first teeth of the first yoke and the plurality of second teeth of the second yoke are arranged so that the different poles of the magnets face each other.

3. In paragraph 1, An aperture device in which the first tooth of the first yoke and the second tooth of the second yoke do not overlap in a direction perpendicular to the optical axis.

4. In paragraph 1, The above magnet is a ring-shaped magnet with alternating N and S poles, The most protruding part of the first tooth of the first yoke is placed on the center line of the N pole of the magnet, An aperture device in which the most protruding part of the second tooth of the second yoke is placed on the center line of the S pole of the magnet.

5. In paragraph 1, An aperture device in which the first tooth of the first yoke and the second tooth of the second yoke have a triangular shape.

6. In paragraph 1, An aperture device in which the coil is arranged in the first body of the first yoke and the second body of the second yoke.

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

8. In paragraph 7, The above moving part includes a first part in which the second protrusion is formed, a second part coupled with the fixed part, and a third part coupled with the magnet. The above second part is an aperture device formed to protrude in a direction perpendicular to the optical axis more than the above first part and the above third part.

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

10. In paragraph 9, The lens barrel includes a first side plate connected to the first opening, a second side plate connected to the second opening, and an upper plate connecting the first side plate and the second side plate. An aperture device in which the coil is arranged on the upper surface of the upper plate of the lens barrel.

Images