Lens module and camera module comprising same

Abstract

A lens module according to an embodiment of the present invention comprises: a lens barrel including at least one lens; and a component disposed in the lens barrel, wherein the lens barrel includes a hole penetrating from the outside to the inside.

Description

Lens module and camera module including same

[0001] The present invention relates to a lens module and a camera module including the same.

[0002] Mobile devices, computers, laptops, and vehicles are equipped with cameras that can display or capture images of their surroundings. As mobile devices become slimmer and computers and laptops become smaller, the demand for compact, lightweight, and high-quality cameras grows.

[0003] Camera devices require optical image stabilization (OIS) to compensate for image shake caused by the user's movements to enhance image quality. This is accomplished by moving the lens perpendicular to the optical axis.

[0004] The technical problem to be solved by the present invention is to provide a lens module and a camera module including the same.

[0005] In order to solve the above technical problem, a lens module according to an embodiment of the present invention includes a lens barrel including at least one lens; and a component disposed within the lens barrel, wherein the lens barrel includes a hole penetrating from the outside to the inside.

[0006] The above component can be connected to electrical wiring drawn out through the above hole.

[0007] The diameter of the hole is formed to be larger than the diameter of the electric wiring, and a sealing member can be placed between the electric wiring and the hole.

[0008] The inner surface of the lens barrel may be spaced apart from a surface of the component facing the inner surface of the lens barrel.

[0009] The above component may be an iris actuator.

[0010] The outer surface of the above component can come into contact with the inner surface of the lens barrel.

[0011] In order to solve the above technical problem, a camera module according to the present embodiment includes a lens module; a lens driving device for driving the lens module; a substrate on which the lens driving device is disposed; and an image sensor disposed on the substrate.

[0012] According to the present embodiments, electrical wiring connected to an iris actuator disposed inside can be drawn out through a hole in the lens barrel.

[0013] In addition, the burr formed on the inside of the lens barrel during the lens barrel injection process can be positioned so as not to come into contact with internal components, thereby preventing interference with electrical connections with external components.

[0014] Figures 1 and 2 are drawings for explaining burr defects that occur during injection molding of a lens barrel.

[0015] Figure 3 illustrates a lens module according to the present embodiment.

[0016] FIG. 4 illustrates a lens module according to another embodiment of the present invention.

[0017] FIG. 5 illustrates a lens module according to another embodiment of the present invention.

[0018] Figure 6 is an exploded perspective view of a camera module according to the present embodiment.

[0019] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0020] 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.

[0021] 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.

[0022] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027]

[0028] Figures 1 and 2 are drawings for explaining burr defects that occur during injection molding of a lens barrel.

[0029] Referring to Fig. 1, when a lens barrel (10) is injection-molded, an upper mold (100) is wrapped around the outside of the lens barrel (10), and a pin core (200) is placed on the inside of the lens barrel (10). The pin core (200) is rotated around an axis and injected to secure the circularity and concentricity of the internal space of the lens barrel (10). At this time, in the case of the through-hole shape of the lens barrel (10), a burr is formed in the P1 and P2 areas during injection.

[0030] A burr is an unwanted residue left on the edge or mating surface of an injection molded product. It is created when plastic leaks between the mold's parting surfaces during the injection molding process. A burr formed on the inside of a lens barrel (10) can cause errors in the internal surface and problems during the assembly process.

[0031] Referring to Fig. 2(a), the gap between the lens barrel (10) and the component (30) is small, so that the burr formed on the lower surface of the hole (13) of the lens barrel (10) comes into contact with the component (30). Referring to Fig. 2(b), the gap between the lens barrel (10) and the component (30) is formed sufficiently large, so that the burr formed on the lower surface of the hole (13) of the lens barrel (10) may not come into contact with the component (30). If the burr comes into contact with the component (30), an electrical connection problem may occur.

[0032]

[0033] FIG. 3 illustrates a lens module according to the present embodiment, FIG. 4 illustrates a lens module according to another embodiment of the present invention, and FIG. 5 illustrates a lens module according to another embodiment of the present invention.

[0034] A lens module according to the present embodiment may include a lens barrel (10), a plurality of lenses (101, 102, 103) and a component (30).

[0035] A plurality of lenses (101, 102, 103) may be arranged inside the lens barrel (10). The first lens (101) may be arranged closest to the object side. The second lens (102) may be arranged second from the object side. The third lens (103) may be arranged third from the object side. This is merely exemplary, and additional lenses may be arranged, and at least one of the first to third lenses (101-103) may be omitted.

[0036] The component (30) may be placed between the lenses. The component (30) may be placed between the second lens (102) and the third lens (103). The component (30) may be an iris actuator. The iris actuator may control the amount of light incident on the lens barrel (10) by controlling the movement of the blades. The component (30) may be electrically connected to an external component of the lens barrel (10). The component (30) may be operated by receiving power through an external component.

[0037] The lens barrel (10) may include a hole (13) penetrating from the outside to the inside. Electrical wiring (20) for electrical connection with a component (30) may be drawn out through the hole (13) of the lens barrel (10). Referring to FIG. 3, the hole (13) of the lens barrel (10) may be formed in an upper region of the lens barrel (10). Referring to FIG. 4, the hole (13) of the lens barrel (10) may be formed in a diagonal region of the lens barrel (10). Referring to FIG. 5, the hole (13) of the lens barrel (10) may be formed in a side region of the lens barrel (10).

[0038] The electrical wiring (20) connected to the component (30) can be connected to an external component. The diameter of the hole (13) can be formed to be larger than the diameter of the electrical wiring (20). A sealing member can be placed on the outer surface of the electrical wiring (20) placed in the hole (13) to prevent moisture from entering the interior of the lens barrel (10).

[0039] In the lens barrel (10), the upper region based on the hole (13) may be referred to as the first region (11), and the lower region may be referred to as the second region (12). The lens barrel (10) may include a first region (11) connected to an opening through which the first lens (101) is exposed to the outside, and a second region (12) including an outer surface.

[0040] The upper surface (S1) and the outer surface (S2) of the flange portion of the first lens (101) can be in contact with the inner surface of the lens barrel (10). The upper surface (S1) and the outer surface (S2) of the flange portion of the first lens (101) can be in contact with the inner surface of the first region (11) of the lens barrel (10). The upper surface (S3) and the outer surface (S4) of the flange portion of the second lens (102) can be in contact with the inner surface of the lens barrel (10). The upper surface (S3) and the outer surface (S4) of the flange portion of the second lens (102) can be in contact with the inner surface of the first region (11) of the lens barrel (10). The outer surface of the third lens (103) can be in contact with the inner surface of the lens barrel (10). The outer surface of the third lens (103) can come into contact with the inner surface of the second region (12) of the lens barrel (10).

[0041] The outer surface of the component (30) can be in contact with the inner surface of the lens barrel (10). The outer surface of the component (30) can be in contact with the inner surface of the second region (12) of the lens barrel (10). The upper surface of the component (30) can be in contact with the lower surface of the flange portion of the second lens (102). The surface of the component (30) facing the inner surface of the lens barrel (10) and the inner surface of the lens barrel (10) can be arranged to be spaced apart by a first gap (L). If a burr is formed on the inner surface of the lens barrel (10), the burr can be prevented from coming into contact with the component (30) by the first gap (L1).

[0042]

[0043] Fig. 6 is an exploded perspective view of a camera module according to the present embodiment. Hereinafter, a camera module according to an embodiment of the present invention will be described with reference to Fig. 6.

[0044] The camera device (25A) may include a camera module. The camera device (25A) may include a lens module (10). The lens module (10) may include at least one lens. The lens may be positioned corresponding to the image sensor (300). The lens module (10) may include a lens and a barrel. The lens module (10) may be coupled to a bobbin of a lens driving device (25B). The lens module (10) may be coupled to the bobbin by screw coupling and / or adhesive. The lens module (10) may be moved integrally with the bobbin.

[0045] The camera device (25A) may include a filter (400). The filter (400) may block light of a specific frequency band from passing through the lens module (10) from being incident on the image sensor (300). The filter (400) may be arranged parallel to the xy plane. The filter (400) may be arranged between the lens module (10) and the image sensor (300). The filter (400) may be arranged on the sensor base (42). Alternatively, the filter (400) may be arranged on the base of the lens driving device (25B). The filter (400) may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor (300).

[0046] The camera device (25A) may include a sensor base (42). The sensor base (42) may be disposed between the lens driving device (25B) and the printed circuit board (50). The sensor base (42) may include a protrusion (41) on which a filter (400) is disposed. An opening may be formed in a portion of the sensor base (42) on which the filter (400) is disposed so that light passing through the filter (400) may be incident on the image sensor (300). The adhesive member (45) may couple or adhere the base of the lens driving device (25B) to the sensor base (42). The adhesive member (45) may additionally serve to prevent foreign substances from entering the interior of the lens driving device (25B). The adhesive member (45) may include at least one of an epoxy, a thermosetting adhesive, and an ultraviolet-curable adhesive.

[0047] The camera device (25A) may include a printed circuit board (50) (PCB, Printed Circuit Board). The printed circuit board (50) may be a substrate or a circuit board. A lens driving device (25B) may be disposed on the printed circuit board (50). A sensor base (42) may be disposed between the printed circuit board (50) and the lens driving device (25B). The printed circuit board (50) may be electrically connected to the lens driving device (25B). An image sensor (300) 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 (300) into an electrical signal and transmit it to an external device.

[0048] The camera device (25A) may include an image sensor (300). The image sensor (300) may be configured to form an image by receiving light that has passed through a lens and a filter (400). The image sensor (300) may be mounted on a printed circuit board (50). The image sensor (300) may be electrically connected to the printed circuit board (50). For example, the image sensor (300) may be coupled to the printed circuit board (50) using surface mounting technology (SMT). As another example, the image sensor (300) may be coupled to the printed circuit board (50) using flip chip technology. The image sensor (300) may be arranged such that its optical axis is aligned with that of the lens. That is, the optical axis of the image sensor (300) and the optical axis of the lens may be aligned. The image sensor (300) can convert light irradiated onto the effective image area of ​​the image sensor (300) into an electrical signal. The image sensor (300) can be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0049] The camera device (25A) 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 (25A). The motion sensor (70) may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0050] The camera device (25A) 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 the AF coil and the OIS coil of the lens driving device (25B). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the AF coil and the OIS coil. The control unit (80) may control the lens driving device (25B) 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 (25B).

[0051] The camera device (25A) 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.

[0052]

[0053] 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. A lens barrel including at least one lens; and Including a component arranged within the lens barrel, The above lens barrel is a lens module including a hole penetrating from the outside to the inside.

2. In paragraph 1, The above component is a lens module connected to an electrical wiring drawn out through the above hole.

3. In paragraph 2, The diameter of the above hole is formed to be larger than the diameter of the above electric wiring, A lens module in which a sealing member is placed between the above electric wiring and the above hole.

4. In paragraph 1, A lens module in which the inner surface of the lens barrel is spaced apart from the surface facing the inner surface of the lens barrel in the above component.

5. In paragraph 1, The above part is a lens module which is an iris actuator.

6. In paragraph 1, A lens module in contact with the outer surface of the above component and the inner surface of the lens barrel.

7. A lens module according to any one of claims 1 to 6; A lens driving device for driving the above lens module; a substrate on which the lens driving device is arranged; and A camera module including an image sensor disposed on the above substrate.

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