Lens module and camera module including same

Abstract

The utility model relates to a lens module and a camera module including the same. The lens module includes: a lens holder having a hollow region; and a lens barrel disposed in the hollow region. Protrusions are provided on an outer surface of the lens barrel. An injection groove configured to accommodate an adhesive is provided on the lens holder. A seating portion connected to the injection groove is provided on an inner surface of the lens holder. The protrusion is provided on the seating portion.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0039343, filed on March 21, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to a lens module and a camera module including the lens module. Background Technology

[0004] Camera modules are used not only in mobile electronic devices such as smartphones, tablet PCs, and laptops, but also in vehicles. A camera module includes a lens module for capturing images.

[0005] The lens module includes a lens barrel and a lens holder. Multiple lenses are housed within the lens barrel, which is integrated with the lens holder. The lens holder, which is integrated with the lens barrel, is then integrated with other components of the camera module.

[0006] Lens barrels are typically in the form of hollow tubes. As a result, the side surface portions are formed to be relatively thin, and correspondingly, the rigidity may also be reduced. In this case, even a small amount of force may cause a slight deformation of the shape of the lens barrel.

[0007] Adhesives can be used to bond lens holders and lens barrels together. The adhesive can be a liquid adhesive, and liquid adhesives can harden after being applied. During the process of hardening the liquid adhesive applied between the lens holder and lens barrel, heat may be generated, and the volume or shape of the adhesive may change.

[0008] Therefore, if the liquid adhesive flows out of the adhesive application area and into another area during the adhesive application process, problems may occur when the lens barrel deforms due to the curing of the adhesive.

[0009] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Utility Model Content

[0010] This summary portion is provided to briefly introduce the selection of concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0011] In one general aspect, the lens module includes: a lens holder having a hollow region; and a lens barrel disposed in the hollow region. A protrusion is provided on the outer surface of the lens barrel. An injection groove configured to receive adhesive is provided on the lens holder. A mounting portion connected to the injection groove is provided on the inner surface of the lens holder. The protrusion is provided on the mounting portion.

[0012] The placement portion may include a stepped portion forming the bottom surface of the placement portion, and the stepped portion may be spaced apart from the injection groove in the optical axis direction.

[0013] The stepped section can be positioned closer to the image side than the bottom surface of the injection groove.

[0014] The stepped portion can be an inclined surface extending from the surface of the lens holder.

[0015] The step portion can form an acute angle with the side surface of the mounting portion.

[0016] When viewed from the object side, the step portion can be ring-shaped.

[0017] The protrusion can be ring-shaped and can correspond to the stepped portion.

[0018] The protrusion may include: a first surface; a second surface spaced apart from the first surface in the optical axis direction; and a third surface connecting the first and second surfaces. The second surface may face the bottom surface of the mounting portion.

[0019] The third surface can face the side surface of the mounting part.

[0020] The first surface can be set to be closer to the object side than the second surface.

[0021] When viewed from the object side, the injection groove can be trapezoidal in shape with a curved bottom.

[0022] The injection slots can be configured as multiple injection slots. Each of the multiple injection slots can be spaced apart from each other along the inner surface of the lens holder.

[0023] When viewed from the image side to the object side, the injection groove can become wider.

[0024] The adhesive can be injected into the injection tank.

[0025] In another general aspect, the camera module includes: a housing; a lens module disposed within the housing, including a lens holder having a hollow region and a lens barrel disposed in the hollow region; and a cover surrounding the housing. The lens holder has a first inner surface, a second inner surface having an inner diameter smaller than that of the first inner surface, and an injection groove configured to receive adhesive. The injection groove is spaced apart from the second inner surface of the lens holder in a direction perpendicular to the optical axis.

[0026] The stepped portion can be located between the first inner surface of the lens holder and the second inner surface of the lens holder.

[0027] The stepped portion can be spaced apart from the bottom surface of the injection groove in a direction parallel to the optical axis.

[0028] Other features and aspects will become apparent from the accompanying drawings and the detailed description below. Attached Figure Description

[0029] Figure 1 This is an exploded perspective view of a camera module that applies a lens module according to an embodiment of the present disclosure.

[0030] Figure 2 This is a perspective view of a lens module according to an embodiment of the present disclosure.

[0031] Figure 3 This is an exploded perspective view of a lens module according to an embodiment of the present disclosure.

[0032] Figure 4 This is a diagram of the lens module as viewed from the object side.

[0033] Figure 5 This is a diagram of the lens barrel as viewed from the object side.

[0034] Figure 6 This is a plan view of the lens holder as seen from the object side.

[0035] Figure 7 This is an enlarged view of the injection groove of the lens holder.

[0036] Figure 8 It is along Figure 4 The sectional view taken by line I-I' in the middle.

[0037] Figure 9A yes Figure 8 An enlarged view of part A, and Figure 9B Is Figure 9A The diagram of the adhesive is shown together with the diagram.

[0038] Throughout the accompanying drawings and detailed embodiments, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative dimensions, scale, and depiction of elements in the drawings may be exaggerated. Detailed Implementation

[0039] In the following description, although examples of this disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0040] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, except for operations that must occur in a specific order, as will become apparent upon understanding this disclosure. Furthermore, for clarity and brevity, descriptions of features well-known in the art may be omitted.

[0041] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways in which the methods, apparatuses, and / or systems described herein will become apparent upon understanding this disclosure.

[0042] Throughout this specification, when an element such as a layer, region, or substrate is described as being "on," "connected to," or "attached to" another element, the element may be directly "on," directly "connected to," or directly "attached to" the other element, or there may be one or more other elements between the element and the other element. Conversely, when an element is described as being "directly on," "directly connected to," or "directly attached to" another element, there are no other elements between the element and the other element.

[0043] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more items; similarly, “at least one” includes any one of the associated listed items and any combination of any two or more items.

[0044] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, first part, first region, first layer, or first section mentioned in these examples may also be referred to as a second component, second part, second region, second layer, or second section.

[0045] Spatial relative terms such as “above,” “above,” “below,” and “under” may be used herein for descriptive convenience to describe the relationship of one element relative to another, as shown in the accompanying drawings. In addition to covering the orientation depicted in the drawings, these spatial relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “above” another element would be located “below” or “under” that other element. Thus, depending on the spatial orientation of the device, the term “above” covers both orientations of “above” and “below”. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0046] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the terms “a,” “an,” and “the” are intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0047] Due to manufacturing techniques and / or tolerances, the shapes shown in the accompanying drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include shape variations that occur during manufacturing.

[0048] It should be noted that in this document, the term "may" is used relative to examples, such as regarding what an example may include or implement, meaning that there exists at least one example that includes or implements such a feature, but not all examples are limited to this.

[0049] The features of the examples described herein can be combined in various ways that will become apparent upon understanding this disclosure. Furthermore, although the examples described herein have multiple configurations, other configurations that will become apparent upon understanding this disclosure are also possible.

[0050] The lens module according to embodiments of this disclosure can be applied to camera modules mounted in vehicles and portable electronic devices. The portable electronic device can be a portable electronic device such as a mobile communication terminal, a smartphone, or a tablet PC.

[0051] Figure 1 This is an exploded perspective view of a camera module using a lens module 10 according to an embodiment of the present disclosure.

[0052] The lens module 10 according to this disclosure can be disposed in a camera module. The camera module may include a housing 20, a cover 30, and the lens module 10.

[0053] The housing 20 may include a hollow region, and the lens module 10 may be disposed in the hollow region of the housing 20. An actuator (not shown) may be disposed inside the housing 20. The actuator may be configured to move the lens module 10 or an image sensor (not shown). The actuator may be an actuator for performing an autofocus (AF) function or an optical image stabilization (OIS) function.

[0054] The image sensor can be located inside the housing 20. The image sensor can also be located at the rear of the lens module 10.

[0055] The cover 30 can form the appearance of the camera module. The cover 30 can be a structure surrounding the housing 20. The cover 30 may include a hollow area, and the front of the lens module 10 can be exposed to the outside through the hollow area of ​​the cover 30. That is, an observer can observe the front of the lens module 10 from the object side to the image side through the hollow area of ​​the cover 30. The cover 30 can be formed of a metallic material. The cover 30 can shield the electromagnetic field generated by the actuator. The cover 30 can prevent camera module malfunction by shielding the electromagnetic field generated by the actuator.

[0056] Figure 2 This is a perspective view of the lens module 10 according to an embodiment of the present disclosure. Figure 3 This is an exploded perspective view of the lens module 10 according to an embodiment of the present disclosure. Figure 4 This is a diagram of the lens module 10 as viewed from the object side. Figure 5 This is a view of the lens barrel 100 as seen from the object side. Figure 6 This is a plan view of the lens holder 200 as seen from the object side. Figure 7 This is an enlarged view of the injection groove 210 of the lens holder 200.

[0057] The lens module 10 may include a lens holder 200 and a lens barrel 100, and the lens holder 200 may be disposed on the outer side of the lens barrel 100. That is, the lens holder 200 may have a hollow region, and at least a portion of the lens barrel 100 may be disposed in the hollow region of the lens holder 200.

[0058] A portion of the actuator may be disposed on one side of the lens holder 200. In this case, the actuator may be, for example, an actuator that moves the lens holder 200 in the optical axis direction for AF driving. A magnet or coil may be disposed as part of the actuator on one side surface of the lens holder 200, and a ball member that can guide the movement of the lens holder 200 in the optical axis direction may also be provided.

[0059] The lens barrel 100 may have a cylindrical shape with a hollow region. Multiple lenses may be disposed within the hollow region of the lens barrel 100. The lens barrel 100 may be disposed within the hollow region of the lens support 200. The outer surface of the lens barrel 100 may face the inner surface of the lens support 200. That is, at least a portion of the outer surface of the lens barrel 100 may have a structure corresponding to at least a portion of the inner surface of the lens support 200.

[0060] The protrusion 110 may be disposed on the outer surface of the lens barrel 100, and the stepped portion 220 may be disposed on the inner surface of the lens holder 200, and the protrusion 110 may be disposed on the stepped portion 220. Further details regarding the protrusion 110 and the stepped portion 220 will be described later.

[0061] The lens barrel 100 can be combined with the lens holder 200. The lens barrel 100 can be disposed in the hollow region of the lens holder 200, and an adhesive can be used to bond the lens barrel 100 and the lens holder 200 together.

[0062] Adhesive can be injected into injection groove 210. Injection groove 210 can be disposed on the inner side of lens holder 200. Injection groove 210 can include multiple injection grooves, and each of the multiple injection grooves 210 can be disposed spaced apart from each other along the inner surface of lens holder 200.

[0063] The lens barrel 100 may have a protrusion 110 disposed on its outer surface. Therefore, the outer diameter of the lens barrel 100 may vary along the optical axis. Specifically, the lens barrel 100 may include a first outer diameter, a second outer diameter, and a third outer diameter.

[0064] refer to Figure 3 and Figure 5 The first outer diameter refers to the outer diameter of the lens barrel 100 measured in front of the protrusion 110, the second outer diameter refers to the outer diameter of the lens barrel 100 measured based on the protrusion 110, and the third outer diameter refers to the outer diameter of the lens barrel 100 measured behind the protrusion 110. Here, the second outer diameter may be larger than the first outer diameter. Furthermore, the second outer diameter may be larger than the third outer diameter.

[0065] In other words, the lens barrel 100 may include a first outer surface 121, a second outer surface 122, and a third outer surface 123. The diameter of the first outer surface 121 may be smaller than the diameter of the second outer surface 122, and the diameter of the third outer surface 123 may be smaller than the diameter of the second outer surface 122.

[0066] The lens holder 200 may have a stepped portion 220 disposed on its inner surface. Therefore, the inner diameter of the lens holder 200 may vary along the optical axis. Specifically, the lens holder 200 may include a first inner diameter and a second inner diameter.

[0067] refer to Figure 3 and Figure 6 The first inner diameter may refer to the inner diameter of the lens holder 200 measured from the front relative to the step portion 220, and the second inner diameter may refer to the inner diameter of the lens holder 200 measured from the rear relative to the step portion 220.

[0068] In other words, the lens holder 200 may include a first inner surface 231 and a second inner surface 232. The first inner surface 231 may be disposed in front of the second inner surface 232, and the inner diameter of the first inner surface 231 may be larger than the inner diameter of the second inner surface 232. Therefore, the stepped portion 220 may be disposed between the first inner surface 231 and the second inner surface 232.

[0069] The stepped portion 220 may be spaced apart from the injection groove 210, which will be described later, in the optical axis direction. Specifically, the stepped portion 220 may be spaced apart from the bottom surface of the injection groove 210 in the optical axis direction. The stepped portion 220 may be positioned closer to the image side than the bottom surface of the injection groove 210.

[0070] When the lens barrel 100 is disposed in the hollow portion of the lens holder 200, the first outer surface 121 of the lens barrel 100 can be disposed facing the first inner surface 231 of the lens holder 200.

[0071] Furthermore, the second outer surface 122 of the protrusion 110 forming the lens barrel 100 may also be disposed facing the first inner surface 231 of the lens holder 200. That is, considering this structure, the distance between the first outer surface 121 of the lens barrel 100 and the first inner surface 231 of the lens holder 200 may be greater than the distance between the second outer surface 122 of the lens barrel 100 and the first inner surface 231 of the lens holder 200.

[0072] In addition, the third outer surface 123 of the lens barrel 100 may be disposed facing the second inner surface 232 of the lens holder 200.

[0073] The lens holder 200 may be provided with an injection groove 210 for adhesive injection. Multiple injection grooves 210 may be provided. Multiple injection grooves 210 may be provided along the inner surface of the lens holder 200. Based on the lens module 10 in which the lens holder 200 and the lens barrel 100 are combined, multiple injection grooves 210 may be provided along the outer surface of the lens barrel 100.

[0074] Furthermore, the injection groove 210 can be spaced apart from the second inner surface 232 of the lens holder 200 in a direction perpendicular to the optical axis. That is, the injection groove 210 can be disposed on the outer side of the second inner surface 232 based on the optical axis.

[0075] refer to Figure 4 When viewed from the object side, the injection groove 210 can have a generally trapezoidal shape. However, in this case, the injection groove 210 can have a trapezoidal shape with a curved bottom. Furthermore, the injection groove 210 can be located in the corner region of the lens holder 200. Based on... Figure 4 Each of the multiple injection slots 210 can be positioned close to each of the four corner regions of the lens holder 200.

[0076] Multiple injection slots 210 can be arranged radially around the optical axis. Any one of the multiple injection slots 210 can be positioned facing another, with the optical axis located between them. That is, any one of the multiple injection slots 210 can be arranged to overlap with another in a direction perpendicular to the optical axis.

[0077] refer to Figure 6 and Figure 7 The injection groove 210 can be a recess whose width varies along the optical axis. Specifically, the injection groove 210 can become wider as it rises from the bottom surface. In other words, the width of the injection groove 210 can become wider as it extends from the rear to the front of the lens holder 200 based on the optical axis.

[0078] Figure 8 It is along Figure 4 A sectional view taken along the center line I-I'. Figure 9A yes Figure 8 An enlarged view of part A in the image, and Figure 9B Is Figure 9A The diagram of the adhesive is shown together with the diagram.

[0079] refer to Figure 8 The protrusion 110 of the lens barrel 100 may be provided on the mounting portion 240 of the lens holder 200. In this case, the mounting portion 240 may refer to the groove structure formed by the stepped portion 220 of the lens holder 200 and a portion of the first inner surface 231 of the lens holder 200.

[0080] refer to Figures 7 to 9A The mounting portion 240 can be configured to connect to the injection groove 210. That is, one side of the bottom surface of the injection groove 210 and one side of the side surface of the mounting portion 240 can be connected to each other. Here, the side surface of the mounting portion 240 may refer to a portion of the first inner surface 231 of the lens holder 200 described above.

[0081] The mounting portion 240 may include a side surface and a bottom surface. The bottom surface of the mounting portion 240 refers to the stepped portion 220 described above. (See reference) Figure 8 , Figure 9A and Figure 9BThe step portion 220 can form an acute angle with the side surface of the mounting portion 240.

[0082] The stepped portion 220 can be an inclined surface extending from the surface of the lens holder 200, and can form an acute angle with an axis parallel to the optical axis, and can also form an acute angle with the side surface of the mounting portion 240. That is, the stepped portion 220 can be an inclined surface whose distance from the optical axis becomes closer as it moves from the image side to the object side. In other words, the stepped portion 220 can be an inclined surface whose distance from the optical axis becomes closer as it moves from the outer side of the lens holder 200 to the inner side of the lens holder 200.

[0083] When viewed from the object side, the stepped portion 220 can be annular. Furthermore, when viewed from the object side, the protrusion 110 of the lens barrel 100 can be annular and can correspond to the stepped portion 220.

[0084] The protrusion 110 of the lens barrel 100 may include a first surface 111, a second surface 112, and a third surface 113.

[0085] The first surface 111 may be a surface that protrudes from the outer surface of the lens barrel 100 towards the outer side of the lens barrel 100. The second surface 112 may be a surface that protrudes from the outer surface of the lens barrel 100 towards the outer side of the lens barrel 100. The first surface 111 and the second surface 112 may be surfaces spaced apart from each other in the optical axis direction. The third surface 113 may be a surface that connects the first surface 111 and the second surface 112.

[0086] The first surface 111 may be a surface disposed in front of the second surface 112. That is, the first surface 111 may be a surface spaced apart from the object side relative to the second surface 112.

[0087] The second surface 112 can be a surface positioned further back than the first surface 111. Therefore, the second surface 112 can be the surface facing the step portion 220.

[0088] The third surface 113 may refer to the second outer surface 122 of the lens barrel 100 described above. The third surface 113 may be the surface facing the side of the mounting portion 240.

[0089] Below, you can refer to Figure 9A and Figure 9B To describe the effect of the lens module 10 according to this disclosure.

[0090] The lens barrel 100 can be disposed in the lens holder 200, and adhesive can be injected into the injection groove 210. The injected adhesive can be an uncured fluid, which can accumulate in the injection groove 210 and flow into the gap formed between the lens barrel 100 and the lens holder 200.

[0091] refer to Figure 9A and Figure 9B The protrusion 110 can prevent the adhesive from flowing into the image side between the lens barrel 100 and the lens holder 200.

[0092] Specifically, the first surface 111 of the protrusion 110 can prevent the adhesive injected into the injection groove 210 from flowing between the third outer surface 123 of the lens barrel 100 and the second inner surface 232 of the lens holder 200.

[0093] Furthermore, a small gap may be formed between the third surface 113 of the protrusion 110 and the side surface of the mounting portion 240. This gap may be pre-designed during the manufacture of the lens module 10, or it may be due to tolerances that may occur during the manufacture of the lens barrel 100 and the lens holder 200.

[0094] Since the third surface 113 of the protrusion 110 can be disposed on the outer side of the lens barrel 100 compared to the third outer surface 123 of the lens barrel 100, adhesive flowing between the third surface 113 of the protrusion 110 and the side surface of the mounting portion 240 can be prevented from flowing into the gap between the third outer surface 123 of the lens barrel 100 and the second inner surface 232 of the lens support 200.

[0095] Furthermore, since the stepped portion 220 can be an inclined surface that gets closer to the object side as it moves from the outside of the lens holder 200 to the inside of the lens holder 200, the stepped portion 220 can prevent the adhesive flowing between the third surface 113 of the protrusion 110 and the side surface of the mounting portion 240 from flowing into the inside of the lens holder 200.

[0096] In summary, the lens module 10 according to the embodiments of the present disclosure can have the effect of preventing the lens barrel 100 from deforming due to the curing of the adhesive by preventing the adhesive from flowing between the third outer surface 123 of the lens barrel 100 and the second inner surface 232 of the lens support 200.

[0097] One aspect of this disclosure is to provide a lens module capable of preventing adhesive from flowing out between the lens barrel and the lens holder into the appropriate application area.

[0098] The lens module according to the embodiments of the present disclosure has the advantage of preventing deformation of the lens barrel or lens support due to adhesive flowing downward between the lens holder and the lens barrel, thereby improving the reliability of the optical performance of the camera module.

[0099] While specific examples have been shown and described above, it will be apparent upon understanding this disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood in a descriptive sense only and not for limiting purposes. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may still be achieved if the described techniques are performed in a different order, and / or if components in the described system, architecture, device, or circuit are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure is not limited by the specific embodiments but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in this disclosure.

Claims

1. A lens module, characterized in that, The lens module includes: Lens support with a hollow area; and The lens barrel is disposed in the hollow region. A protrusion is provided on the outer surface of the lens barrel. The lens holder is provided with an injection groove configured to receive adhesive. The inner surface of the lens holder is provided with a mounting portion connected to the injection groove, and The protrusion is provided on the mounting portion.

2. The lens module according to claim 1, characterized in that, The placement portion includes a stepped portion forming the bottom surface of the placement portion, and The stepped portion is spaced apart from the injection groove in the optical axis direction.

3. The lens module according to claim 2, characterized in that, The stepped portion is positioned closer to the image side than the bottom surface of the injection groove.

4. The lens module according to claim 2, characterized in that, The stepped portion is an inclined surface extending from the surface of the lens holder.

5. The lens module according to claim 2, characterized in that, The stepped portion forms an acute angle with the side surface of the mounting portion.

6. The lens module according to claim 2, characterized in that, When viewed from the object side, the stepped portion is annular.

7. The lens module according to claim 6, characterized in that, The protrusion is annular and corresponds to the stepped portion.

8. The lens module according to claim 2, characterized in that, The protrusion includes: First surface; A second surface, spaced apart from the first surface in the optical axis direction; and The third surface connects the first surface and the second surface. The second surface faces the bottom surface of the mounting portion.

9. The lens module according to claim 8, characterized in that, The third surface faces the side surface of the mounting portion.

10. The lens module according to claim 8, characterized in that, The first surface is configured to be closer to the object side than the second surface.

11. The lens module according to claim 1, characterized in that, When viewed from the object side, the injection groove is trapezoidal in shape with a curved bottom.

12. The lens module according to claim 1, characterized in that, The injection slots are configured as multiple injection slots, and Each of the plurality of injection slots is spaced apart from each other along the inner surface of the lens holder.

13. The lens module according to claim 1, characterized in that, When viewed from the image side to the object side, the injection groove becomes wider.

14. The lens module according to claim 1, characterized in that, The adhesive is injected into the injection tank.

15. A camera module, characterized in that, The camera module includes: case; A lens module, disposed within the housing, includes a lens holder having a hollow region and a lens barrel disposed within the hollow region; and Cover, surrounding the housing, The lens holder has a first inner surface, a second inner surface with an inner diameter smaller than that of the first inner surface, and an injection groove for receiving adhesive. The injection groove is spaced apart from the second inner surface of the lens holder in a direction perpendicular to the optical axis.

16. The camera module according to claim 15, characterized in that, A stepped portion is provided between the first inner surface of the lens holder and the second inner surface of the lens holder.

17. The camera module according to claim 16, characterized in that, The stepped portion is spaced apart from the bottom surface of the injection groove in a direction parallel to the optical axis.

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