Camera module

Abstract

The camera module includes a first body including a lens, a second body coupled to the first body, and a printed circuit board including an image sensor, the first body including a first protrusion protruding downward from a bottom surface and a first coupling groove disposed inside the first protrusion, the second body including a second protrusion protruding upward from a top surface and facing the first coupling groove and a second coupling groove disposed outside the second protrusion and facing the first protrusion, an adhesive member is disposed on an inner surface, an upper surface, and an outer surface of the second protrusion, and the second protrusion has at least one groove or hole for disposing the adhesive member.

Description

Technical Field

[0001] This embodiment relates to a camera module.

Background Art

[0002] In recent years, ultra-small camera modules have been developed and are widely used in small electronic products such as smartphones, notebook computers, and game consoles.

[0003] As automobiles become more popular, ultra-small cameras are also widely used in vehicles in addition to small electronic products. For example, a black box camera for vehicle protection or objective materials for traffic accidents, a rear monitoring camera that allows a driver to monitor a blind spot zone at the rear of the vehicle on a screen to ensure safety when reversing the vehicle, a peripheral sensing camera that can monitor the periphery of the vehicle, etc. are provided.

[0004] A camera may include a lens, a lens holder that houses the lens, an image sensor that converts an image of a subject collected by the lens into an electrical signal, and a printed circuit board on which the image sensor is mounted. The housing that forms the outer shape of the camera has a structure in which the entire area is sealed to prevent internal components from being contaminated by foreign matter containing moisture.

Summary of the Invention

Problems to be Solved by the Invention

[0005] This embodiment aims to provide a camera module with an improved structure that can firmly maintain the coupling state between a plurality of bodies. Therefore, it is possible to prevent internal components from being contaminated by external foreign matter using a simple coupling structure.

Means for Solving the Problems

[0006] The camera module according to this embodiment includes a first body including a lens, a second body coupled to the first body, and a printed circuit board disposed in the space between the first and second bodies and including an image sensor. The first body includes a first projection projecting downward from its lower surface and a first coupling groove disposed inside the first projection. The second body includes a second projection projecting upward from its upper surface and facing the first coupling groove, and a second coupling groove disposed outside the second projection and facing the first projection. Adhesive members are disposed on the inner surface, upper surface, and outer surface of the second projection, and the second projection has at least one groove or hole for which the adhesive members are disposed.

[0007] The second projection may include a hole that penetrates from the inner surface to the outer surface.

[0008] The aforementioned holes may be provided in multiple numbers and arranged at a distance from one another along the periphery of the second projection.

[0009] The optical axis length of the hole may be less than half the optical axis length of the second protrusion.

[0010] A first groove may be provided on the inner surface of the second protrusion, and a second groove may be provided on the outer surface of the second protrusion.

[0011] The length from the outer surface of the second projection to the bottom surface of the second groove, or the length from the inner surface of the second projection to the bottom surface of the first groove, may be within 30% of the thickness of the second projection.

[0012] A groove is provided on the upper surface of the second protrusion, which is recessed below the other areas. Multiple such grooves may be provided and arranged spaced apart from each other along the periphery of the second protrusion.

[0013] A groove is provided on the inner surface of the second projection, which is recessed outward compared to other areas, and the groove may be provided on the inner surface of each of the four sides of the second projection of the second body.

[0014] The groove may be a long groove extending in the length direction of the side.

[0015] The adhesive member may contain epoxy.

Advantages of the Invention

[0016] According to this embodiment, a groove or a hole is formed on the surface of the second protrusion where the adhesive member is disposed, increasing the disposition area of the adhesive member. As a result, there is an advantage that the coupling state between the first body and the second body can be held more firmly.

Brief Description of the Drawings

[0017] [Figure 1] It is a perspective view showing the appearance of a camera module according to an embodiment of the present invention.

[0018] [Figure 2] It is a plan view showing the side surface of a camera module according to an embodiment of the present invention.

[0019] [Figure 3] It is an exploded perspective view of a camera module according to an embodiment of the present invention.

[0020] [Figure 4] It is a cross-sectional view showing the coupling structure between the first body and the second body according to an embodiment of the present invention.

[0021] [Figure 5] It is a perspective view of a second body according to a first embodiment of the present invention.

[0022] [Figure 6] It is a perspective view showing a cut-open part of a second protrusion according to a first embodiment of the present invention. <​​​​​​​

[0024] [Figure 8] Figure 7 is a magnified perspective view of the second protrusion.

[0025] [Figure 9] This is a perspective view of the second body according to the third embodiment of the present invention.

[0026] [Figure 10] Figure 9 is a magnified perspective view of the second protrusion.

[0027] [Figure 11] This is a perspective view of the second body according to the fourth embodiment of the present invention.

[0028] [Figure 12] Figure 11 is a perspective view showing a portion of the second protrusion after it has been cut open. [Modes for carrying out the invention]

[0029] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0030] However, the technical concept of the present invention is not limited to the embodiments described, but may be embodied in various other forms, and within the scope of the technical concept of the present invention, one or more of its components can be selectively combined or substituted between embodiments.

[0031] Furthermore, unless explicitly defined, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a way that is generally understood by a person with ordinary skill in the art to which the present invention belongs. Terms that are commonly used, such as those defined in dictionaries, may be interpreted in terms of their meaning in the context of the relevant art.

[0032] Furthermore, the terminology used in the embodiments of the present invention is for illustrative purposes only and is not intended to limit the present invention.

[0033] In this specification, the singular form may also include the plural form unless otherwise specified in the context, and when it is written as "A and / or at least one of B and C (or one or more)", it may include one or more of all possible combinations of A, B, and C.

[0034] Furthermore, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. Such terms are merely for distinguishing one component from another, and do not limit the nature, order, or sequence of the component.

[0035] Furthermore, when it is stated that one component is “linked,” “joined,” or “connected” to another component, this may include not only cases where one component is directly “linked,” “joined,” or “connected” to another component, but also cases where one component is “linked,” “joined,” or “connected” to another component through the intermediary of yet another component.

[0036] Furthermore, when it is stated that a component is formed or positioned "above" or "below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or positioned between the two components. Also, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward lateral direction relative to one component.

[0037] In the following, "optical axis direction" is defined as the optical axis direction of the lens. On the other hand, "optical axis direction" can also correspond to "vertical direction," "z-axis direction," etc.

[0038] The present invention will be described in more detail below with reference to the attached drawings.

[0039] Figure 1 is a perspective view showing the external appearance of a camera module according to an embodiment of the present invention; Figure 2 is a plan view showing a side view of a camera module according to an embodiment of the present invention; Figure 3 is an exploded perspective view of a camera module according to an embodiment of the present invention; Figure 4 is a cross-sectional view showing the coupling structure between the first body and the second body according to an embodiment of the present invention; Figure 5 is a perspective view of the second body according to the first embodiment of the present invention; and Figure 6 is a perspective view showing a part of the second protrusion according to the first embodiment of the present invention after cutting.

[0040] Referring to Figures 1 to 6, the camera module 10 according to the embodiment of the present invention may be a vehicle camera module. The camera module 10 may be coupled to a vehicle. The camera module 10 may be used in one or more of the vehicle's front camera, side camera, rear camera, and black box. The camera module 10 may be positioned at the front of the vehicle. The camera module 10 may be positioned at the rear of the vehicle. The camera module 10 may be coupled to the vehicle's windshield. The camera module 10 may be coupled to the front or rear windshield of the vehicle. The camera module 10 may be positioned on the side of the vehicle. The camera module 10 can capture a subject and output it as an image to a display (not shown).

[0041] The camera module 10 may include a first body 100. The first body 100 may be named a front body, an upper housing, or a first housing. The first body 100 may include a body section 120. The first body 100 may include a barrel section 110. The first body 100 may include a lens 130. The body section 120, barrel section 110, and lens 130 of the first body 100 may be formed as a single unit. Two or more of the body section 120, barrel section 110, and lens 130 of the first body 100 may be formed as a single unit. As a modification, the body section 120, barrel section 110, and lens 130 may each be formed separately.

[0042] The body portion 120 may be bonded to the barrel portion 110. The body portion 120 may be formed integrally with the barrel portion 110. The body portion 120 may be made of a metal material. The body portion 120 may be placed on the second body 200, which will be described later. The body portion 120 may be bonded to the second body 200. The lower end of the body portion 120 may be fixed to the second body 200. The body portion 120 may be bonded to the second body 200 with adhesive. The body portion 120 may be bonded to the printed circuit board 300, which will be described later.

[0043] The body portion 120 may be formed in a rectangular shape with an open bottom. In this case, the corners of the body portion 120 may be formed in a rounded shape. The body portion 120 may include a top plate 124 and a first side plate 122 extending from the top plate 124. The top plate 124 may be formed in a rectangular shape. The top plate 124 may extend outward from the outer peripheral surface of the lower end of the barrel portion 110. The first side plate 122 may extend downward from the outer edge of the top plate 124. There may be multiple first side plates 122. The first side plate 122 may include four side plates. The first side plate 122 may be formed in a rectangular plate shape. The first side plate 122 may include a 1-1 side plate, a 1-2 side plate, a 1-3 side plate positioned on the opposite side of the 1-1 side plate, and a 1-4 side plate positioned on the opposite side of the 1-2 side plate. The first side plate 122 may include 1-1 to 1-4 corners, which are positioned between the 1-1 to 1-4 side plates, respectively. Each of the 1-1 to 1-4 corners may include a rounded shape in at least part of it.

[0044] A space may be formed inside the body portion 120, which is separated from other areas. The space may have an opening at the bottom and be covered at the top by the barrel portion 110 and the lower surface of the lens 130.

[0045] The body portion 120 may include a first edge region. The first edge region may be located outside the space. The first edge region can form the lower edge of the body portion. The first edge region may be formed on the lower surface of the first side plate 122.

[0046] The first edge region may include the first projection 140 and the first coupling groove 150. The first coupling groove 150 may be positioned inside the first projection 140 with respect to the center of the body portion 120.

[0047] The first protrusion 140 may be located outside the first coupling groove 150. The first protrusion 140 may be formed to protrude downward from the lower surface of the body portion 120. The first protrusion 140 may protrude lower from the lower surface of the first side plate 122 than other areas. With respect to the optical axis direction, the lower end of the first protrusion 140 may be located above the lower surface of the printed circuit board 300. With respect to the optical axis direction, the lower end of the first protrusion 140 may be located below the upper surface of the printed circuit board 300. The lower end of the first protrusion 140 may be located below the bottom surface of the first coupling groove 150. The bottom surface of the first coupling groove 150 may be located above the upper surface of the printed circuit board 300.

[0048] The first coupling groove 150 may be located inside the first projection 140. The first coupling groove 150 may be formed to recess above the lower end of the first projection 140. The bottom surface of the first coupling groove 150 may be located above the lower end of the first projection 140. The bottom surface of the first coupling groove 150 may be defined as the lower surface of the first side plate 122. The first coupling groove 150 may be a region formed by the first projection 140 which is formed to protrude from the first side plate 122.

[0049] A guide 190 may be positioned inside the first coupling groove 150, protruding downward from other areas and positioned on the upper surface of the printed circuit board 300. The lower surface of the guide 190 may be in contact with the upper surface of the printed circuit board 300. The first coupling groove 150 may be a region positioned between the first protrusion 140 and the guide 190.

[0050] The first body 100 may include a barrel portion 110. The barrel portion 110 may be a lens barrel. The barrel portion 110 may be made of a metal material. The barrel portion 110 may be positioned on the body portion 120. The barrel portion 110 may extend from the upper surface of the body portion 120. The barrel portion 110 may be formed integrally with the body portion 120. As a modification, the barrel portion 110 may be joined to the body portion 120. In this case, the barrel portion 110 may be fixed to the body portion 120 with an adhesive. The barrel portion 110 can house a lens 130 inside. The barrel portion 110 may include a hole 112. The lens 130 may be positioned in the hole 112 of the barrel portion 110. The inner circumferential surface of the hole in the barrel portion 110 may be formed in a shape and size corresponding to the outer circumferential shape of the lens 130.

[0051] The first body 100 may include a lens 130. The lens 130 may be positioned in the barrel section 110. The lens 130 may be coupled to the barrel section 110. The lens 130 may be positioned in the hole 112 of the barrel section 110. The lens 130 may include multiple lenses 130. The lens 130 may be aligned with the image sensor 310, which will be described later. The lens 130 may be optically aligned with the image sensor 310. The optical axis of the lens 130 may coincide with the optical axis of the image sensor 310. The first body 100 may include an infrared filter (IR filter) positioned between the lens 130 and the image sensor 310.

[0052] The camera module 10 may include a second body 200. The second body 200 may be named a rear body, a lower housing, or a second housing. The second body 200 may be formed in a rectangular shape with an open top. The second body 200 may be made of a metal material. The second body 200 may be positioned below the first body 100. The second body 200 may be coupled to the first body 100. The second body 200 can form an internal space by coupling with the first body 100. The second body 200 may include a space 212 with an open top.

[0053] The second body 200 may include a bottom plate 202. The bottom plate 202 may face the top plate 124 of the body portion 120 of the first body 100. The bottom plate 202 may be spaced apart from the top plate 124 of the body portion 120 of the first body 110 in the direction of the optical axis. The bottom plate 202 may be parallel to the top plate 124 of the body portion 110 of the first body 100. The bottom plate 202 may be formed in a rectangular shape. In this case, the corners of the bottom plate 202 may include a rounded shape in at least a part of it.

[0054] The second body 200 may include a second side plate 206. The second side plate 206 may extend upward from the bottom plate 202. The second side plate 206 may extend from the outer edge of the bottom plate 202. A shielding can (not shown) may be placed on the second side plate 206. The shielding can may be in surface contact with the inner surface of the second side plate 206. The upper end of the second side plate 206 may be coupled to the first body 100. The outer surface of the second side plate 206 may be positioned inward from the outer surface of the side plate 122 of the first body 100, with reference to a direction perpendicular to the optical axis. However, it is not limited to this, and the outer surface of the second side plate 206 may be positioned to form a coplanar plane with the outer surface of the first side plate 122.

[0055] The second body 200 may include a connector lead-out section 290. The connector lead-out section 290 may be coupled to the bottom plate 202. The connector lead-out section 290 may be positioned in a hole 207 in the bottom plate 202. The connector lead-out section 290 may penetrate the hole 207 in the bottom plate 202. A connector 500 may be positioned inside the connector lead-out section 290. The connector lead-out section 290 may be made of a metal material.

[0056] The second body 200 may include a second edge region. The second edge region may be located outside the space 212. The second edge region may be formed on the upper surface of the second side plate 206. The second edge region may form the upper edge of the second body 200. The second edge region may be positioned opposite the first edge region in the direction of the optical axis.

[0057] When the first body 100 and the second body 200 are joined, the first edge region and the second edge region may be arranged such that at least a portion of them are separated in the direction of the optical axis. When the first body 100 and the second body 200 are joined, an adhesive member housing portion, which will house the adhesive member 600 described later, may be arranged between the first edge region and the second edge region.

[0058] The second edge region may include a second projection 240 and a second coupling groove 250. The second coupling groove 250 may be located outside the second projection 240. With respect to the optical axis direction, the first projection 140 and the second coupling groove 250 may be positioned facing each other, and the first coupling groove 150 may be positioned facing each other from the second projection 240.

[0059] The second protrusion 240 may be formed to protrude upward from the upper surface of the second body 200. The second protrusion 240 may be formed to protrude upward from the upper surface of the second side plate 206. At least a portion of the second protrusion 240 may be positioned inside the first coupling groove 150. With respect to a direction perpendicular to the optical axis, the second protrusion 240 may be positioned so as to overlap at least a portion with the first protrusion 140. The upper end of the second protrusion 240 may be positioned above the bottom surface of the second coupling groove 250. The upper end of the second protrusion 240 or the bottom surface of the second coupling groove 250 may be positioned between the upper and lower surfaces of the printed circuit board 300.

[0060] As shown in Figure 4, the upper surface of the second protrusion 240 may be spaced apart from the bottom surface of the first coupling groove 150 in the optical axis direction, but is not limited to this, and the upper surface of the second protrusion 240 may be in contact with the bottom surface of the first coupling groove 150. The second protrusion 240 may be positioned within the first coupling groove 150 formed between the first protrusion 140 and the guide 190.

[0061] The second coupling groove 250 may be located outside the second projection 240. The bottom surface of the second coupling groove 250 may be located below the top surface of the second projection 240. The first projection 140 may be coupled to the second coupling groove 250. As shown in Figure 4, the bottom surface of the second coupling groove 250 may be spaced apart from the bottom surface of the first projection 140 in the optical axis direction, but conversely, the bottom surface of the second coupling groove 250 may be in contact with the bottom surface of the first projection 140.

[0062] The camera module 10 may include a printed circuit board 300. The printed circuit board 300 may be positioned between the first body 100 and the second body 200. The printed circuit board 300 may be positioned within the space formed by the coupling of the first body 100 and the second body 200. The printed circuit board 300 may be positioned to overlap the first edge region or the second edge region in a direction perpendicular to the optical axis direction. One surface of the printed circuit board 300 may be in contact with the lower surface of the guide 190.

[0063] An image sensor 310 may be placed on the upper surface of the printed circuit board 300. A connector 500 may be connected to the lower surface of the printed circuit board 300. The printed circuit board 300 may be electrically connected to the connector 500.

[0064] The camera module 10 may include an adhesive member 600. The adhesive member 600 may be a region where adhesive has been cured. More specifically, the adhesive member 600 may be a region where epoxy has been cured. The adhesive member 600 may firmly fix the bond between the first body 100 and the second body 200.

[0065] The adhesive member 600 may be positioned between the first body 100 and the second body 200. The adhesive member 600 may be positioned between the first edge region and the second edge region. As described above, an adhesive member housing section is provided between the first edge region and the second edge region, which is a space that is separated in the direction of the optical axis at least partially, and the adhesive member 600 may be positioned in the adhesive member housing section.

[0066] Therefore, the adhesive member 600 is positioned between the lower surface of the first protrusion 140 and the bottom surface of the second coupling groove 250, between the upper surface of the second protrusion 240 and the bottom surface of the first coupling groove 150, and between the side surface of the printed circuit board 300 and the inner surface of the second protrusion 240, thereby firmly bonding the first body 100 and the second body 200.

[0067] Referring to Figures 5 and 6, the second projection 240 may include a hole 242. The hole 242 may be formed to penetrate the outer surface from the inner surface of the second projection 240. Multiple holes 242 may be provided and arranged spaced apart from each other. The hole 242 may have a rectangular cross-sectional shape, but is not limited to this, and may have various shapes including circular and polygonal shapes.

[0068] As mentioned above, an adhesive member 600, which is a region where epoxy has hardened, may be placed on the outer surface of the second protrusion 240. Therefore, when the hole 242 is formed in the second protrusion 240, the epoxy injection liquid before hardening can also flow into the inner space of the hole 242, which has the advantage that the area where the adhesive member 600 is placed can be expanded, thereby more firmly maintaining the bond between the first body 100 and the second body 200.

[0069] As shown in Figure 6, the optical axis length A from the upper end of the hole 242 to the upper surface of the second projection 240 may be 0.1 mm to 0.5 mm.

[0070] The optical axis length B of hole 242 may be less than half the optical axis length C of the second projection 240. However, the optical axis length B of hole 242 may be greater than 0.2 mm.

[0071] When the cross-sectional shape of the hole 242 is formed as a rectangle, the width of the hole 242, i.e., the length D of the longer side of the rectangle, may be 0.5 mm to 5.0 mm.

[0072] The distance between adjacent halls 242 may be greater than the length of the longer side of the hall 242.

[0073] A pattern (not shown) may be formed on the upper surface of the second protrusion 240 or the bottom surface of the second coupling groove 250 by a laser. The pattern may include an uneven shape.

[0074] On the other hand, this embodiment provides an example in which a hole 242 for increasing the adhesive member placement area is formed in the second protrusion 240, but it is not limited to this, and of course, a hole penetrating from the outer surface to the inner surface can also be formed in the first protrusion 140 of the first body 100 to increase the adhesive member placement area.

[0075] Figure 7 is a perspective view of the second body according to a second embodiment of the present invention, and Figure 8 is a perspective view showing the second protrusion in Figure 7 in an enlarged view.

[0076] This embodiment is identical to the first embodiment in all other respects, differing only in the shape of the second projection. Therefore, only the characteristic features of this embodiment will be described below, and the description of the first embodiment will be used as a reference for the remaining parts.

[0077] Referring to Figures 7 and 8, the first groove 1242 may be arranged on the inner surface of the second projection 1240, and the second groove 1244 may be arranged on the outer surface of the second projection 1240.

[0078] The first groove 1242 may be formed so as to recess outward from the inner surface of the second projection 1240 compared to other areas. The second groove 1244 may be formed so as to recess inward from the outer surface of the second projection 1240 compared to other areas. Multiple first grooves 1242 and second grooves 1244 may be provided and arranged spaced apart from each other. The first grooves 1242 and second grooves 1244 may be arranged alternately around the second projection 1240. In this way, the first grooves 1242 and second grooves 1244 may be arranged so as not to face each other with respect to a direction perpendicular to the optical axis.

[0079] The first groove 1242 and the second groove 1244 may each be formed with a rectangular cross-section, but are not limited to this, and may have various shapes including circular and polygonal shapes.

[0080] Referring to Figure 8, the length A from the outer surface of the second projection 1240 to the bottom surface of the second groove 1244 may be within 30% of the thickness C of the second projection 1240. Similarly, the length from the inner surface of the second projection 1240 to the bottom surface of the first groove 1242 may be within 30% of the thickness C of the second projection 1240.

[0081] The optical axis length B from the upper surface of the second side plate 1210 to the upper surface of the second protrusion 1240 may be 0.1 mm to 1.0 mm.

[0082] Furthermore, a laser-formed pattern (not shown) may be formed on the upper surface of the second protrusion 1240 or the upper surface of the second side plate 1210. The pattern may include an uneven or recessed shape.

[0083] The structure described above has the advantage that the area for arranging adhesive members can be increased by the multiple groove patterns on the inner and outer surfaces of the second protrusion 1240.

[0084] Figure 9 is a perspective view of the second body according to a third embodiment of the present invention, and Figure 10 is a perspective view showing the second protrusion in Figure 9 in an enlarged view.

[0085] This embodiment is identical to the first embodiment in all other respects, differing only in the shape of the second projection. Therefore, only the characteristic features of this embodiment will be described below, and the description of the first embodiment will be used as a reference for the remaining parts.

[0086] Referring to Figures 9 and 10, a groove 2242 may be provided on the upper surface of the second projection 2240, which is recessed below other areas. Multiple grooves 2242 may be provided and arranged spaced apart from each other along the periphery of the second projection 2240.

[0087] The groove 2242 may have a rectangular cross-sectional shape.

[0088] A laser-formed pattern (not shown) may be formed on the upper surface of the second protrusion 2240. The pattern may include an uneven or recessed shape.

[0089] The width A of groove 2242 may be between 0.3 mm and 2 mm.

[0090] The optical axis length from the bottom surface of groove 2242 to the top surface of the second projection 2240 may be 0.05 mm to 1 mm.

[0091] The above-described structure has the advantage that the arrangement area for adhesive members can be increased by the multiple groove patterns on the upper surface of the second protrusion 2240.

[0092] Figure 11 is a perspective view of the second body according to a fourth embodiment of the present invention, and Figure 12 is a perspective view showing a portion of the second projection in Figure 11 cut open.

[0093] This embodiment is identical to the first embodiment in all other respects, differing only in the shape of the second projection. Therefore, only the characteristic features of this embodiment will be described below, and the description of the first embodiment will be used as a reference for the remaining parts.

[0094] Referring to Figures 11 and 12, a groove 3242 may be provided on the inner surface of the second projection 3240, which is recessed outward from other areas. Multiple grooves 3242 may be provided and arranged spaced apart from each other along the periphery of the second projection 3240.

[0095] If the second body 3200 has a rectangular cross-sectional shape, the grooves 3242 may be located on the inner surfaces of the four second protrusions 3240 that form each side. The grooves 3242 may be elongated grooves that extend in the direction of the length of the side.

[0096] Referring to Figure 12, the length B from the inner surface of the second projection 3240 to the bottom surface of the groove 3242, with respect to the direction perpendicular to the optical axis, may be 1 / 2 or less of the length A of the second projection 3240.

[0097] The optical axis length C from the upper surface of the second projection 3240 to the upper end of the groove 3242 may be 0.1 mm to 0.5 mm.

[0098] The optical axis length D of the groove 3242 may be less than half the optical axis length E of the second projection 3240, but may be 0.2 mm or more.

[0099] A laser-formed pattern (not shown) may be formed on the upper surface of the second protrusion 3240. The pattern may include an uneven or recessed shape.

[0100] The above-described structure has the advantage that the area for placing adhesive material can be increased by the multiple groove patterns on the inner surface of the second protrusion 3240. Furthermore, the area on the inner surface of the second protrusion 3240 where adhesive material can be placed in the area facing the side surface of the printed circuit board 300 can be widened, thereby increasing the fixing force with the printed circuit board 300.

[0101] On the other hand, while this embodiment provides an example in which a groove 3242 is formed on the inner surface of the second projection 3240, it is not limited to this, and the groove 3242 may be formed on the outer surface of the second projection 3240.

[0102] While embodiments of the present invention have been described above with reference to the attached drawings, those with ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without altering its technical idea or essential features. Therefore, the embodiments described above should be understood to be illustrative and not limiting in all respects.

Claims

1. The first body, including the lens, A second body which connects to the first body, The first body and the second body are arranged in space and include a printed circuit board that includes an image sensor, The first body includes a first projection that protrudes downward from the lower surface, and a first coupling groove disposed inside the first projection. The second body includes a second projection that protrudes upward from the upper surface and faces the first coupling groove, and a second coupling groove that is located outside the second projection and faces the first projection. Adhesive members are placed on the inner surface, upper surface, and outer surface of the second protrusion. The second protrusion is a camera module having at least one groove or hole in which the adhesive member is positioned.

2. The camera module according to claim 1, wherein the second protrusion includes a hole that penetrates from the inner surface to the outer surface.

3. The camera module according to claim 2, wherein the aforementioned holes are provided in multiple locations and are spaced apart from each other along the periphery of the second protrusion.

4. The camera module according to claim 2, wherein the optical axis length of the hole is less than half the optical axis length of the second protrusion.

5. The camera module according to claim 1, wherein a first groove is disposed on the inner surface of the second protrusion and a second groove is disposed on the outer surface of the second protrusion.

6. The camera module according to claim 5, wherein the length from the outer surface of the second protrusion to the bottom surface of the second groove or the length from the inner surface of the second protrusion to the bottom surface of the first groove is within 30% of the thickness of the second protrusion.

7. A groove is provided on the upper surface of the second protrusion, which is recessed below the other areas. The camera module according to claim 1, wherein the grooves are provided in multiple locations and are spaced apart from each other along the periphery of the second projection.

8. A groove is provided on the inner surface of the second protrusion, which is recessed outward compared to other areas. The camera module according to claim 1, wherein the grooves are each arranged on the inner surface of the second protrusions that form the four sides of the second body.

9. The camera module according to claim 8, wherein the groove is an elongated groove extending in the longitudinal direction of the side.

10. The camera module according to claim 1, wherein the adhesive member comprises epoxy.

Images