Lens module and camera module including same

Abstract

The invention 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 from Korean Patent Application No. 10-2024-0039343 filed on March 21, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety for all purposes. Technical Field

[0003] The present disclosure relates to a lens module and a camera module including the same. Background Art

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

[0005] The lens module includes a lens barrel and a lens holder. Multiple lenses are set in the lens barrel, and the lens barrel is combined with the lens holder. The lens holder combined with the lens barrel is combined with other components of the camera module.

[0006] The lens barrel is generally in the form of a hollow tube. Therefore, the thickness of the side surface portion is formed thinner, and accordingly, the rigidity may also be reduced. In this case, even a small amount of force may cause slight deformation of the shape of the lens barrel.

[0007] An adhesive may be used to bond the lens holder and the lens barrel together. The adhesive may be a liquid adhesive that hardens after being applied. During the hardening process of the liquid adhesive applied between the lens holder and the 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, a problem may occur when the lens barrel is deformed due to curing of the adhesive.

[0009] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the Invention

[0010] This Summary is provided to introduce a selection of concepts in a concise form that will be further described in the Detailed Description below. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

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

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

[0013] The stepped portion may be provided closer to the image side than the bottom surface of the injection groove.

[0014] The step portion may be an inclined surface extending from a surface of the lens holder.

[0015] The step portion may form an acute angle with a side surface of the seating portion.

[0016] The step portion may be annular when viewed from the object side.

[0017] The protrusion may be annular and may correspond to the step 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 surface and the second surface. The second surface may face a bottom surface of the seating portion.

[0019] The third surface may face a side surface of the seating portion.

[0020] The first surface may be disposed closer to the object side than the second surface.

[0021] When viewed from the object side, the injection groove may have a trapezoidal shape with a curved bottom.

[0022] The injection groove may be provided as a plurality of injection grooves, and each of the plurality of injection grooves may be provided spaced apart from each other along the inner surface of the lens holder.

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

[0024] The adhesive may be injected into the injection groove.

[0025] In another general aspect, a camera module includes a housing; a lens module disposed within the housing and including a lens holder having a hollow region and a lens barrel disposed within 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 an 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 step portion may be provided between the first inner surface of the lens holder and the second inner surface of the lens holder.

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

[0028] Other features and aspects will be apparent from the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 3 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 viewed from the object side.

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

[0034] Figure 6 This is a plan view of the lens holder viewed 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 A cross-sectional view taken along line II' in FIG.

[0037] Figure 9A yes Figure 8 An enlarged view of part A of Figure 9B is Figure 9A A diagram of the adhesive is also shown on the basis of FIG.

[0038] Throughout the drawings and detailed description, 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 sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0039] Hereinafter, although examples of the present 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 description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for the sake of clarity and brevity, descriptions of features that are 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 limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0042] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled 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 members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, without departing from the teachings of the examples described herein, a first member, first component, first region, first layer, or first portion mentioned in these examples may also be referred to as a second member, second component, second region, second layer, or second portion.

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

[0046] The terms used herein are only used to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "a," "an," and "the" are intended to include plural forms as well. The terms "include," "comprising," 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 drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shape that occur during manufacturing.

[0048] It should be noted that herein, use of the word “may” with respect to an example, for example, regarding what an example may include or implement, means that there is at least one example that includes or implements such feature, and all examples are not limited thereto.

[0049] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0050] The lens module according to an embodiment of the present disclosure may be applied to a camera module mounted on a vehicle as well as a portable electronic device. The portable electronic device may be a portable electronic device such as a mobile communication terminal, a smart phone, or a tablet PC.

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

[0052] The lens module 10 according to the present disclosure may be provided 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 area, and the lens module 10 may be disposed in the hollow area 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 the 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 may be provided inside the housing 20. The image sensor may be provided at the rear of the lens module 10.

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

[0056] Figure 2 is a perspective view of a lens module 10 according to an embodiment of the present disclosure. Figure 3 is an exploded perspective view of a 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 1 is a view of the lens barrel 100 viewed from the object side. Figure 6 1 is a plan view of the lens holder 200 viewed from the object side. Figure 7 It 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 outside of the lens barrel 100. That is, the lens holder 200 may have a hollow area, and at least a portion of the lens barrel 100 may be disposed in the hollow area of ​​the lens holder 200.

[0058] A portion of the actuator may be provided 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 drive. A magnet or a coil may be provided on one side surface of the lens holder 200 as part of the actuator, and a ball member may also be provided to guide the movement of the lens holder 200 in the optical axis direction.

[0059] The lens barrel 100 may have a cylindrical shape with a hollow area. A plurality of lenses may be disposed within the hollow area of ​​the lens barrel 100. The lens barrel 100 may be disposed within the hollow area of ​​the lens holder 200. The outer surface of the lens barrel 100 may face the inner surface of the lens holder 200. In other words, 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 holder 200.

[0060] The protrusion 110 may be provided on the outer surface of the lens barrel 100, the step portion 220 may be provided on the inner surface of the lens holder 200, and the protrusion 110 may be provided on the step portion 220. Details regarding the protrusion 110 and the step portion 220 will be further described later.

[0061] The lens barrel 100 may be combined with the lens holder 200. The lens barrel 100 may be disposed in a hollow region of the lens holder 200, and an adhesive may combine the lens barrel 100 and the lens holder 200.

[0062] The adhesive may be injected into the injection groove 210. The injection groove 210 may be provided on the inner side of the lens holder 200. The injection groove 210 may include a plurality of injection grooves, and each of the plurality of injection grooves 210 may be provided spaced apart from each other along the inner surface of the lens holder 200.

[0063] The lens barrel 100 may have a protrusion 110 provided on an outer surface. Therefore, the outer diameter of the lens barrel 100 may vary along the optical axis direction. 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. In addition, 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 that of the second outer surface 122, and the diameter of the third outer surface 123 may be smaller than that of the second outer surface 122.

[0066] The lens holder 200 may have a stepped portion 220 provided on an inner surface thereof. Therefore, the inner diameter of the lens holder 200 may vary along the optical axis direction. 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 an 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 an 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 greater than the inner diameter of the second inner surface 232. Therefore, the step 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 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 provided 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 may be disposed facing the first inner surface 231 of the lens holder 200 .

[0071] In addition, 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 into which the adhesive is injected. The injection groove 210 may be provided in plurality. The plurality of 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, the plurality of injection grooves 210 may be provided along the outer surface of the lens barrel 100.

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

[0075] refer to Figure 4 , when the lens module 10 is viewed from the object side, the injection groove 210 may have a substantially trapezoidal shape. However, in this case, the injection groove 210 may have a trapezoidal shape with a curved bottom. In addition, the injection groove 210 may be provided in a corner region of the lens holder 200. Based on Figure 4 , each of the plurality of injection grooves 210 may be disposed adjacent to each of the four corner regions of the lens holder 200 .

[0076] The plurality of injection slots 210 may be radially arranged with the optical axis as the center. Any one of the plurality of injection slots 210 may be arranged facing another, with the optical axis located therebetween. In other words, any one of the plurality of injection slots 210 may be arranged to overlap another in a direction perpendicular to the optical axis.

[0077] refer to Figure 6 and Figure 7 The injection groove 210 may be a groove whose width changes along the optical axis. Specifically, the injection groove 210 may become wider as it extends upward from the bottom surface. In other words, the width of the injection groove 210 may 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 cross-sectional view taken along the center line II', Figure 9A yes Figure 8 An enlarged view of part A in FIG, and Figure 9B is Figure 9A A diagram of the adhesive is also shown on the basis of FIG.

[0079] refer to Figure 8 , the protrusion 110 of the lens barrel 100 may be disposed on the seating portion 240 of the lens holder 200. In this case, the seating portion 240 may refer to a groove structure formed by the step 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 seating portion 240 may be provided to be connected 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 seating portion 240 may be connected to each other. Here, the side surface of the seating portion 240 may refer to a portion of the first inner surface 231 of the lens holder 200 described above.

[0081] The seating portion 240 may include a side surface and a bottom surface. The bottom surface of the seating portion 240 refers to the step portion 220 described above. Figure 8 、 Figure 9A and Figure 9B, the step portion 220 may form an acute angle with a side surface of the seating portion 240 .

[0082] The step portion 220 may be an inclined surface extending from the surface of the lens holder 200 and may form an acute angle with an axis parallel to the optical axis, and may also form an acute angle with the side surface of the seating portion 240. In other words, the step portion 220 may 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 step portion 220 may be an inclined surface whose distance from the optical axis becomes closer as it moves from the outside of the lens holder 200 to the inside of the lens holder 200.

[0083] When viewed from the object side, the stepped portion 220 may be annular. In addition, when viewed from the object side, the protrusion 110 of the lens barrel 100 may be annular and may 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 toward the outside of the lens barrel 100. The second surface 112 may be a surface that protrudes from the outer surface of the lens barrel 100 toward the outside of the lens barrel 100. The first surface 111 and the second surface 112 may be surfaces that are 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 with respect to the second surface 112.

[0087] The second surface 112 may be a surface disposed further rearward than the first surface 111. Therefore, the second surface 112 may be a surface facing the step portion 220.

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

[0089] Below, you can refer to Figure 9A and Figure 9B The effects of the lens module 10 according to the present disclosure will be described.

[0090] The lens barrel 100 may be disposed in the lens holder 200, and an adhesive may be injected into the injection groove 210. The injected adhesive may be an uncured fluid that may accumulate in the injection groove 210 and flow into a 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 between the lens barrel 100 and the lens holder 200 toward the image side.

[0092] Specifically, the first surface 111 of the protrusion 110 may 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] In addition, a small gap may be formed between the third surface 113 of the protrusion 110 and the side surface of the seating portion 240. This gap may be reserved by design during the manufacture of the lens module 10, or may be caused by 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 set on the outer side of the lens barrel 100 compared to the third outer surface 123 of the lens barrel 100, the adhesive flowing between the third surface 113 of the protrusion 110 and the side surface of the seating 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 holder 200.

[0095] In addition, since the step 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 step portion 220 can prevent the adhesive flowing between the third surface 113 of the protrusion 110 and the side surface of the seating portion 240 from flowing into the inside of the lens holder 200.

[0096] In summary, the lens module 10 according to an embodiment of the present disclosure may have the effect of preventing the lens barrel 100 from being deformed due to 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 holder 200 .

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

[0098] The lens module according to an embodiment of the present disclosure may have an advantage of preventing deformation of the lens barrel or the lens holder due to downward flow of adhesive between the lens holder and the lens barrel, thereby improving reliability of optical performance of the camera module.

[0099] Although specific examples have been shown and described above, it will be apparent after 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 purposes of limitation. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Appropriate results may still be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits 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. Lens module, including: a lens holder having a hollow area; as well as a lens barrel disposed in the hollow region and accommodating a plurality of lenses, Wherein, a protrusion is provided on the outer surface of the lens barrel, Wherein, an injection groove configured to accommodate an adhesive is provided on the lens holder, Wherein, a placement portion connected to the injection groove is provided on the inner surface of the lens holder, and Wherein, the protrusion is provided on the seating portion.

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

3. The lens module according to claim 2, wherein: The stepped portion is provided closer to an image side than a bottom surface of the injection groove.

4. The lens module according to claim 2, wherein: The step portion is an inclined surface extending from a surface of the lens holder.

5. The lens module according to claim 2, wherein: The step portion forms an acute angle with a side surface of the seating portion.

6. The lens module according to claim 2, wherein: The step portion is annular when viewed from the object side.

7. The lens module according to claim 6, wherein: The protrusion is annular and corresponds to the step portion.

8. The lens module according to claim 2, wherein: The protrusion comprises: a first surface; a second surface spaced apart from the first surface in the optical axis direction; and a third surface connecting the first surface and the second surface, wherein the second surface faces the bottom surface of the seating portion.

9. The lens module according to claim 8, wherein: The third surface faces a side surface of the seating portion.

10. The lens module according to claim 8, wherein: The first surface is disposed closer to the object side than the second surface.

11. The lens module according to claim 1, wherein: When viewed from the object side, the injection groove has a trapezoidal shape with a curved bottom.

12. The lens module according to claim 1, wherein: The injection slot is configured as a plurality of injection slots, and Wherein, each of the plurality of injection grooves is arranged spaced apart from each other along the inner surface of the lens holder.

13. The lens module according to claim 1, wherein: When viewed from the image side toward the object side, the injection groove becomes wider.

14. The lens module according to claim 1, wherein: The adhesive is injected into the injection groove.

15. Camera module, including: case; a lens module disposed in the housing, comprising a lens holder having a hollow area and a lens barrel disposed in the hollow area and accommodating a plurality of lenses; as well as a cover, surrounding the housing, wherein 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 for accommodating an adhesive, and Wherein, 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, wherein: A step 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, wherein: The stepped portion is spaced apart from a bottom surface of the injection groove in a direction parallel to the optical axis.

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