Lens module

Abstract

A lens module is provided. The lens module includes: a lens barrel; a lens disposed within the lens barrel; and a gap holding portion disposed within the lens barrel and further disposed between a side surface of the lens and an inner circumferential surface of the lens barrel, in which a protruding portion protruding toward the inner circumferential surface of the lens barrel is disposed on the side surface of the lens, and a groove in which the protruding portion is disposed is formed in the gap holding portion.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2023-0145905 filed on October 27, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The following description relates to a lens module. Background Art

[0004] As the performance of portable devices (eg, portable phones) increases, high resolution is required in a small camera module mounted in the portable device. Therefore, the small camera module may be composed of a lens module including a large number of lenses.

[0005] A lens module including a plurality of lenses may include a lens and a lens barrel accommodating the lens. The lens module has a structure for aligning the optical axis of the lens by sequentially inserting the lens into the lens barrel. In addition, a gap retaining portion may be provided between the lenses, and the gap retaining portion may be sequentially inserted into the lens barrel and assembled in the same manner as the lens.

[0006] The lens includes a flange portion that can be used to combine the lens to the lens barrel. However, there are cases where light can enter the flange portion and cause unexpected flare. Therefore, a structure of a lens and a gap holding portion that reduces the occurrence of flare in a lens module and facilitates assembly of the lens module is needed. Summary of the invention

[0007] The purpose of providing this summary is to introduce a selection of concepts in a concise form, and these concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the claimed subject matter, nor is it intended to be used to help determine the scope of the claimed subject matter.

[0008] In general, the lens module includes: a lens barrel; a lens disposed in the lens barrel; and a gap retaining portion disposed in the lens barrel and also disposed between a side surface of the lens and an inner peripheral surface of the lens barrel, wherein a protruding portion protruding toward the inner peripheral surface of the lens barrel is disposed on the side surface of the lens, and a groove is formed in the gap retaining portion, and the protruding portion is disposed in the groove.

[0009] The groove may have a shape corresponding to the shape of the protruding portion.

[0010] The gap maintaining portion may include a first gap maintaining portion and a second gap maintaining portion disposed above the first gap maintaining portion, wherein the groove may be disposed between the first gap maintaining portion and the second gap maintaining portion.

[0011] The protruding portion may include an inclined surface whose distance from the optical axis increases from the object side toward the image side.

[0012] The protruding portion may include: a first inclined surface, the distance between the first inclined surface and the optical axis increases from the object side to the image side; and a second inclined surface, the distance between the second inclined surface and the optical axis decreases from the object side to the image side, wherein the first inclined surface and the second inclined surface may be connected on a side away from the optical axis.

[0013] A width of a cross section of the protruding portion parallel to the optical axis may become narrower as a distance from the optical axis increases.

[0014] The protruding portion may include a first inclined surface contacting the first gap maintaining portion and a second inclined surface contacting the second gap maintaining portion, wherein the first inclined surface and the second inclined surface may be connected to each other.

[0015] The protrusion may include a first protrusion directly extending from a side surface of the lens and a second protrusion directly extending from the first protrusion, wherein a cross-section of the second protrusion may have a width parallel to the optical axis that narrows as a distance from the optical axis increases.

[0016] The second protruding portion may include a first inclined surface contacting the first gap maintaining portion and a second inclined surface contacting the second gap maintaining portion, wherein the first inclined surface and the second inclined surface may be connected to each other.

[0017] The protruding portion may be formed with a recessed groove formed to be recessed from the object side toward the image side, and the first gap maintaining portion may include a groove step portion provided in the recessed groove.

[0018] The protruding portion may include: a first recessed groove formed to be recessed from the object side to the image side; and a second recessed groove formed to be recessed from the image side to the object side, wherein the first gap maintaining portion may include a first groove step portion arranged in the first recessed groove, and the second gap maintaining portion may include a second groove step portion arranged in the second recessed groove.

[0019] The first depressed groove and the second depressed groove may be disposed symmetrically with respect to a line perpendicular to the optical axis.

[0020] The protrusion may include a first protrusion directly extending from a side surface of the lens and a second protrusion directly extending from the first protrusion, wherein a cross-section of the first protrusion may have a width parallel to the optical axis that narrows as a distance from the optical axis increases.

[0021] In general, the lens module includes: a lens barrel; a lens, disposed in the lens barrel; and a first gap retaining portion and a second gap retaining portion, disposed in the lens barrel and stacked in the optical axis direction, wherein a side surface of the lens contacts an inner surface of the first gap retaining portion and an inner surface of the second gap retaining portion.

[0022] The lens may include an optical part and a flange part arranged at an edge of the optical part, wherein the first gap maintaining part may include a first step part protruding from the inside of the first gap maintaining part in a direction perpendicular to the optical axis direction, and wherein the flange part and the first step part may overlap in the optical axis direction.

[0023] The flange portion and the first step portion may be disposed in contact with each other.

[0024] The second gap maintaining portion may include a second step portion protruding from an inner portion of the second gap maintaining portion in a direction perpendicular to the optical axis direction, and wherein the second step portion may overlap the lens in the optical axis direction.

[0025] A seating groove formed to be recessed in the optical axis direction may be provided on an upper surface of the first gap maintaining portion, and the second gap maintaining portion may include a protrusion provided in the seating groove.

[0026] The width of the seating groove may be narrowed from the image side to the object side, and the protrusion may have a shape corresponding to the shape of the seating groove.

[0027] Other features and aspects will be apparent from the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an exploded perspective view illustrating an exemplary lens module according to one or more embodiments.

[0029] Figure 2 is a cross-sectional view illustrating an exemplary lens module according to one or more embodiments.

[0030] Figure 3 The first embodiment shows Figure 2 Figure A of the diagram.

[0031] Figure 4 The second embodiment is shown in FIG. Figure 2 Figure A of the diagram.

[0032] Figure 5 The third embodiment shows Figure 2 Figure A of the diagram.

[0033] Figure 6 The gap maintaining portion is not included. Figure 5 .

[0034] Figure 7 Shown without lens Figure 5 .

[0035] Figure 8 According to the fourth embodiment, Figure 2 Part A of

[0036] Fig. 9 The gap maintaining portion is not included. Figure 8 .

[0037] Fig.10 Shown without lens Figure 8 .

[0038] Fig.11 According to the fifth embodiment, Figure 2 Part A of

[0039] Fig.12 The gap maintaining portion is not included. Fig.11 .

[0040] Fig.13 Shown without lens Fig.11 .

[0041] Fig.14 According to the sixth embodiment, Figure 2 Part A of

[0042] 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 descriptions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0043] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, various changes, modifications and equivalents of the method, device and / or system described herein will be apparent after understanding the disclosure of the application. For example, the order in the operation described herein and / or the order of the operation described herein are only examples, and except for the order in the operation that must occur in a specific sequence and / or the order of operations, it is not limited to the order set forth in this article, but can be changed, which will be apparent after understanding the disclosure of the application. As another example, except for at least a portion of the order in the operation that must occur in a sequence (e.g., a specific sequence) and / or the order in the order of operations, the order in the order of operations and / or operations can be performed in parallel. In addition, for greater clarity and brevity, the description of the features known after understanding the disclosure of the application can be omitted.

[0044] Although terms such as "first", "second" and "third" or A, B, (a), (b) 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. Each of these terms is not used to define, for example, the importance, sequence or order of the corresponding member, component, region, layer or portion, but is only used to distinguish the corresponding member, component, region, layer or portion from other members, components, regions, layers or portions. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0045] Throughout the specification, when a component, element or layer is described as being "on another component, element or layer," "connected to," "coupled to," or "engaged to" another component, element or layer, it may be directly "on another component, element or layer," directly "connected to," "coupled to," or "engaged to" another component, element or layer (e.g., in contact with another component, element or layer), or there may reasonably be one or more other components, elements or layers between the component, element or layer and the other component, element or layer. When a component, element or layer is described as being "directly on another component, element or layer," "directly connected to," "directly coupled to," or "directly engaged to" another component, element or layer, there are no other components, elements or layers between the component, element or layer and the other component, element or layer. Similarly, expressions such as "between" and "directly between," as well as "adjacent" and "directly adjacent" may also be interpreted as described above.

[0046] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "one", "an" and "the" are intended to include plural forms as well. As non-limiting examples, the terms "comprise", "include" and "have" illustrate the existence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof, or the existence of alternative features, quantities, operations, components, elements and / or combinations thereof. In addition, although an embodiment can set forth the terms "comprise", "include" and "have" to illustrate the existence of the described features, quantities, operations, components, elements and / or combinations thereof, other embodiments may exist, in which one or more of the described features, quantities, operations, components, elements and / or combinations thereof are not present.

[0047] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items. The phrases "at least one of A, B, and C," etc. are intended to have a disjunctive meaning, and these phrases "at least one of A, B, and C," etc. also include examples in which one or more of A, B, and C may be present (e.g., any combination of one or more of A, B, and C), unless the corresponding description and implementation require that the enumeration (e.g., "at least one of A, B, and C") be interpreted as having a conjunctive meaning.

[0048] The features described herein may be embodied in different forms and should not be construed as being limited to the examples described herein. On the contrary, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application. In this article, the use of the wording "may" relative to an example or implementation (e.g., content that may be included or implemented with respect to an example or implementation) means that there is at least one example or implementation that includes or implements such a feature, and all examples or implementations are not limited thereto. The words "example" or "implementation" used herein have the same meaning (e.g., the phrase "in one example" has the same meaning as "in one implementation", and "in one or more examples" has the same meaning as "in one or more implementations").

[0049] One or more examples may provide a lens module that reduces flare and minimizes tolerance due to assembly.

[0050] For the purpose of explanation, with respect to the optical axis, a direction away from the optical axis in a direction perpendicular to the optical axis may be referred to as an outer side, and with respect to the optical axis, a direction close to the optical axis in a direction perpendicular to the optical axis may be referred to as an inner side. In addition, based on the drawings shown for the purpose of explanation, the upper part and the lower part may be distinguished and explained.

[0051] Figure 1 is an exploded perspective view for illustrating an exemplary lens module according to one or more embodiments, Figure 2 is a cross-sectional view for illustrating an exemplary lens module according to one or more embodiments, and Figure 3 The first embodiment shows Figure 2 Figure A of the diagram.

[0052] refer to Figure 1 and Figure 2 , the lower part is the object side, and the upper part is the image side.

[0053] An exemplary lens module may include a lens barrel 10 , a lens 20 , and gap maintaining portions 30 and 40 .

[0054] refer to Figure 1 and Figure 2 , one lens and two gap maintaining portions are shown. However, this is for illustration purposes only. Therefore, the lens module may include a plurality of lenses, and may include a plurality of gap maintaining portions disposed between the plurality of lenses.

[0055] The lens barrel 10 may include a hollow portion 11. A plurality of lenses may be disposed in the hollow portion 11 of the lens barrel 10. A plurality of lenses may be stacked in the optical axis direction and disposed in the hollow portion 11 of the lens barrel 10. A gap retaining portion 30 or 40 may be disposed in the hollow portion 11 of the lens barrel 10. The gap retaining portion 30 or 40 may be disposed between the plurality of lenses, and the number thereof may vary depending on implementation. A plurality of gap retaining portions 30 and 40 may also be stacked and disposed in the optical axis direction, and the lens 20 may be disposed between the plurality of gap retaining portions 30 and 40.

[0056] As only an example, the lens 20 may be formed of glass, a glass molded part, a thermosetting resin, a thermoplastic resin, or a plastic. The lens 20 may have a positive refractive power or a negative refractive power. The lens 20 may be disposed within the lens barrel 10.

[0057] The lens 20 may include an optical portion 21 and a flange portion 22. The optical portion 21 may be a region that substantially refracts incident light reflected from an object. The optical portion 21 may have a concave shape, a convex shape, or a meniscus shape.

[0058] The flange portion 22 may be formed at an edge of the optical portion 21. In one or more examples, the flange portion 22 may contact the gap maintaining portions 30 and 40. The protrusion 210 may be provided on a side surface of the flange portion 22. The gap maintaining portions 30 and 40 may be provided between the side surface of the flange portion 22 and the inner circumferential surface of the lens barrel 10. That is, the side surface of the flange portion 22 may be spaced apart from the inner circumferential surface of the lens barrel 10 by the gap maintaining portions 30 and 40.

[0059] The gap holding portions 30 and 40 may be formed of an opaque material. In an example, the surfaces of the gap holding portions 30 and 40 may be coated with an opaque material. That is, the gap holding portions 30 and 40 may be formed of a material that does not allow light to pass through. Since the gap holding portions 30 and 40 may be formed of a material that does not allow light to pass through, flare that may occur when light passes through the gap holding portions 30 and 40 may be prevented.

[0060] The gap retaining parts 30 and 40 may be disposed in the lens barrel 10. The gap retaining parts 30 and 40 may be disposed in the hollow part 11 of the lens barrel 10. The gap retaining parts 30 and 40 may be formed by an annular member. That is, the gap retaining parts 30 and 40 may also include a hollow part, and light may be incident through the hollow part of the gap retaining parts 30 and 40.

[0061] The gap retaining portions 30 and 40 may separate the lens 20 from the lens barrel 10. That is, at least a portion of the gap retaining portions 30 and 40 may be disposed between the lens 20 and the inner peripheral surface of the lens barrel 10. Specifically, at least a portion of the gap retaining portions 30 and 40 may be disposed between the side surface of the flange portion 22 and the inner peripheral surface of the lens barrel 10 to separate the lens 20 from the lens barrel 10. The inner surfaces of the gap retaining portions 30 and 40 may be disposed to contact the side surface of the lens 20.

[0062] The gap maintaining portions 30 and 40 may include a first gap maintaining portion 30 and a second gap maintaining portion 40 .

[0063] refer to Figure 2 In an example, the first gap retaining portion 30 may be disposed at a lower portion of the lens barrel 10, and the second gap retaining portion 40 may be disposed at an upper portion of the lens barrel 10. The first gap retaining portion 30 and the second gap retaining portion 40 may be stacked in the optical axis direction within the lens barrel 10. An inner surface of the first gap retaining portion 30 may contact a side surface of the lens 20, and an inner surface of the second gap retaining portion 40 may also contact a side surface of the lens 20.

[0064] The gap holding portions 30 and 40 may have a thickness. In an example, the thickness may refer to a length measured in the optical axis direction. The single thickness of the first gap holding portion 30 or the second gap holding portion 40 may be thinner than the thickness of the flange portion 22. However, the sum of the thicknesses of the first gap holding portion 30 and the second gap holding portion 40 may be greater than the thickness of the flange portion 22. Therefore, the lens 20 and other lenses may be spaced apart in the optical axis direction by the gap holding portions 30 and 40.

[0065] refer to Figure 3 , the first gap maintaining portion 30 may include a first step portion 31. The first step portion 31 may be formed along the inner circumferential surface of the first gap maintaining portion 30. The first step portion 31 may be formed to protrude from the inner circumferential surface of the first gap maintaining portion 30 in a direction perpendicular to the optical axis direction.

[0066] The first step portion 31 may be provided to overlap with the flange portion 22 in the optical axis direction. The first step portion 31 may contact one surface of the flange portion 22 in the optical axis direction. In an example, one surface of the flange portion 22 contacting the first step portion 31 may be an object side surface. The first step portion 31 may cover the flange portion 22 in the optical axis direction, and by this structure, light incident on the flange portion 22 may be prevented from being diffusely reflected inside the lens 20.

[0067] One surface of the first gap maintaining portion 30 may be in contact with the second gap maintaining portion 40. In an example, one surface of the first gap maintaining portion 30 may be an image side surface of the first gap maintaining portion 30. Figure 3 , the image side surface of the first gap maintaining portion 30 may be referred to as an upper surface of the first gap maintaining portion 30 .

[0068] The seating groove 32 may be formed in the upper surface of the first gap maintaining portion 30. The seating groove 32 may be formed to be recessed from the upper surface of the first gap maintaining portion 30 in the optical axis direction. That is, the seating groove 32 may be formed to be recessed from the upper surface of the first gap maintaining portion 30 toward the object side, and the width of the seating groove 32 may be narrowed from the upper surface of the first gap maintaining portion 30 toward the object side. The seating groove 32 may have a shape corresponding to the shape of the protrusion 42 to be described later.

[0069] The second gap maintaining portion 40 may include a second step portion 41. The second step portion 41 may be formed along the inner circumferential surface of the second gap maintaining portion 40. The second step portion 41 may be formed to protrude from the inner circumferential surface of the second gap maintaining portion 40 in a direction perpendicular to the optical axis direction.

[0070] The second step portion 41 may be disposed to overlap the optical portion 21 in the optical axis direction. The second step portion 41 may face the image side surface of the optical portion 21. In an example, the second step portion 41 may shield a portion of an edge portion of the optical portion 21 in the optical axis direction, and through this structure, the second step portion 41 may prevent light from being diffusely reflected in an edge region of the optical portion 21.

[0071] One surface of the second gap maintaining portion 40 may be in contact with the first gap maintaining portion 30. In an example, one surface of the second gap maintaining portion 40 may be an object side surface of the second gap maintaining portion 40. Figure 3 , the object side surface of the second gap maintaining portion 40 may be referred to as a lower surface of the second gap maintaining portion 40 .

[0072] The protrusion 42 may be provided on the lower surface of the second gap maintaining portion 40. The protrusion 42 may be formed to protrude from the lower surface of the second gap maintaining portion 40 in the optical axis direction. The width of the protrusion 42 may be narrowed from the image side to the object side, and the shape of the protrusion 42 may correspond to the shape of the seating groove 32. The protrusion 42 may be provided in the seating groove 32.

[0073] By the structure of the seating groove 32 of the first gap maintaining portion 30 and the protrusion 42 of the second gap maintaining portion 40 , the first gap maintaining portion 30 and the second gap maintaining portion 40 may be aligned in the optical axis direction within the lens barrel 10 .

[0074] refer to Figure 3 , the structure of the protruding portion according to the first embodiment will be described.

[0075] The protrusion 210 may be provided on a side surface of the lens 20. Specifically, the protrusion 210 may be provided on a side surface of the flange portion 22 of the lens 20. In other words, the side surface of the lens 20 may refer to the same portion as the side surface of the flange portion 22.

[0076] The protrusion portion 210 may protrude from the side surface of the lens 20 toward the inner circumferential surface of the lens barrel 10. In this example, the protrusion portion 210 may be formed to protrude from the side surface of the lens 20 in a direction perpendicular to the optical axis.

[0077] The cross section of the protrusion 210 may have a sharp end at an end away from the optical axis. When the length measured in the optical axis direction based on the cross section of the protrusion 210 is defined as the width, the width of the cross section of the protrusion 210 may become narrower as the distance from the optical axis increases.

[0078] The protruding portion 210 may have a symmetrical structure with respect to a line perpendicular to the optical axis. In an example, the line perpendicular to the optical axis may be a virtual line obtained by extending from the optical axis to the end of the protruding portion 210.

[0079] The protruding portion 210 may include inclined surfaces 220 and 230 . The inclined surfaces 220 and 230 may be provided in plural. The plurality of inclined surfaces 220 and 230 may include a first inclined surface 220 and a second inclined surface 230 .

[0080] like Figure 3 As shown in FIG. 2 , the first inclined surface 220 may be an inclined surface disposed below the second inclined surface 230. The distance between the first inclined surface 220 and the optical axis may increase from the object side to the image side.

[0081] like Figure 3 As shown in FIG. 2 , the second inclined surface 230 may be an inclined surface disposed above the first inclined surface 220. The distance between the second inclined surface 230 and the optical axis may decrease from the object side to the image side.

[0082] The first inclined surface 220 and the second inclined surface 230 may be connected to each other. Specifically, the first inclined surface 220 and the second inclined surface 230 may be connected to each other on a side away from the optical portion 21 of the lens 20. The portion where the first inclined surface 220 and the second inclined surface 230 are connected to each other may be referred to as a corner portion 260 of the protruding portion 210. The end of the corner portion 260 may be disposed at a boundary where the first gap maintaining portion 30 and the second gap maintaining portion 40 contact in the optical axis direction.

[0083] The protruding portion 210 may be disposed in a groove 50 formed in the gap maintaining portions 30 and 40. That is, the gap maintaining portions 30 and 40 may include a groove 50 having a shape corresponding to the shape of the protruding portion 210. The groove 50 may be disposed between the first gap maintaining portion 30 and the second gap maintaining portion 40. When the first gap maintaining portion 30 and the second gap maintaining portion 40 are stacked, the groove 50 may be formed between the first gap maintaining portion 30 and the second gap maintaining portion 40.

[0084] Figure 4 According to the second embodiment, Figure 2 Part A of

[0085] The protrusion may be a two-stage protrusion. That is, the protrusion may include a first protrusion 211 protruding directly from the side surface of the flange portion 22 and a second protrusion 212 protruding directly from the first protrusion 211. That is, the optical portion 21, the flange portion 22, the first protrusion 211, and the second protrusion 212 may be sequentially arranged based on a direction perpendicular to the optical axis.

[0086] The first protrusion portion 211 may protrude from a side surface of the flange portion 22 in a direction perpendicular to the optical axis. A width of a cross section of the first protrusion portion 211 may be constant. A lower surface and an upper surface of the first protrusion portion 211 may be parallel surfaces.

[0087] The second protrusion portion 212 may protrude in a direction perpendicular to the optical axis from a side surface of the first protrusion portion 211. A width of a cross section of the second protrusion portion 212 may become narrower as a distance from the optical axis increases.

[0088] The second protruding portion 212 may have a symmetrical structure with respect to a line perpendicular to the optical axis. In an example, the line perpendicular to the optical axis may be a virtual line obtained by extending from the optical axis to an end of the second protruding portion 212.

[0089] The second protrusion portion 212 may include a first inclined surface 221 and a second inclined surface 231 .

[0090] like Figure 4 As shown in FIG. 2 , the first inclined surface 221 may be an inclined surface disposed below the second inclined surface 231. The first inclined surface 221 may be an inclined surface whose distance from the optical axis increases from the object side to the image side.

[0091] like Figure 4 As shown in FIG. 2 , the second inclined surface 231 may be an inclined surface disposed above the first inclined surface 221. The second inclined surface 231 may be an inclined surface whose distance from the optical axis decreases from the object side to the image side.

[0092] The first inclined surface 221 and the second inclined surface 231 may be connected to each other. Specifically, the first inclined surface 221 and the second inclined surface 231 may be connected to each other on a side away from the optical portion 21 of the lens 20. The portion where the first inclined surface 221 and the second inclined surface 231 are connected to each other may be referred to as a corner portion 261 of the second protruding portion 212. The corner portion 261 may be provided at a boundary where the first gap retaining portion 30 and the second gap retaining portion 40 contact in the optical axis direction.

[0093] The first protruding portion 211 and the second protruding portion 212 may be disposed in a groove 51 formed in the gap retaining portions 30 and 40. That is, the gap retaining portions 30 and 40 may have a groove 51 having a shape corresponding to the shape of the first protruding portion 211 and the second protruding portion 212. The groove 51 may be formed between the first gap retaining portion 30 and the second gap retaining portion 40. When the first gap retaining portion 30 and the second gap retaining portion 40 are stacked, the groove 51 may be formed between the first gap retaining portion 30 and the second gap retaining portion 40.

[0094] Figure 5 According to the third embodiment, Figure 2 Part A of Figure 6 The gap maintaining portion is not included. Figure 5 ,as well as Figure 7 Shown without lens Figure 5 .

[0095] refer to Figure 5 , Figure 6 and Figure 7 , the protrusion may be a two-stage protrusion. That is, the protrusion may include a first protrusion 213 protruding directly from the side surface of the flange portion 22 and a second protrusion 214 protruding directly from the first protrusion 213. That is, the optical portion 21, the flange portion 22, the first protrusion 213, and the second protrusion 214 may be sequentially arranged based on a direction perpendicular to the optical axis.

[0096] The first protrusion portion 213 may protrude from the side surface of the flange portion 22 in a direction perpendicular to the optical axis. The width of a cross section of the first protrusion portion 213 may be constant. The lower surface and the upper surface of the first protrusion portion 213 may be parallel surfaces.

[0097] The second protrusion 214 may protrude from the side surface of the first protrusion 213 in a direction perpendicular to the optical axis. As the distance from the optical axis increases, the width of the cross section of the second protrusion 214 may become narrower. In addition, the widest width of the second protrusion 214 may be wider than the width of the first protrusion 213.

[0098] The upper surface and the lower surface of the second protrusion portion 214 may be parallel surfaces. The distance between the upper surface and the lower surface of the second protrusion portion 214 may be greater than the distance between the upper surface and the lower surface of the first protrusion portion 213 .

[0099] The recessed groove may be provided between the side surface of the flange portion 22 and the second protruding portion 214. The recessed groove may include a first recessed groove 250 and a second recessed groove 240. Figure 5 , the first depressed groove 250 may be disposed in the lower portion, and the second depressed groove 240 may be disposed in the upper portion. The first depressed groove 250 may be formed to be depressed from the object side to the image side, and the second depressed groove 240 may be formed to be depressed from the image side to the object side. The first depressed groove 250 and the second depressed groove 240 may be disposed symmetrically with respect to a line perpendicular to the optical axis.

[0100] The second protruding portion 214 may include a first inclined surface 222 and a second inclined surface 232 .

[0101] like Figure 6As shown in FIG. 2 , the first inclined surface 222 may be an inclined surface disposed below the second inclined surface 232. The first inclined surface 222 may be an inclined surface whose distance from the optical axis increases from the object side to the image side.

[0102] like Figure 6 As shown in , the second inclined surface 232 may be an inclined surface disposed above the first inclined surface 222. The second inclined surface 232 may be an inclined surface whose distance from the optical axis decreases from the object side to the image side.

[0103] The first inclined surface 222 and the second inclined surface 232 may be connected to each other. Specifically, the first inclined surface 222 and the second inclined surface 232 may be connected to each other on a side away from the optical portion 21 of the lens 20. The portion where the first inclined surface 222 and the second inclined surface 232 are connected to each other may be referred to as a corner portion 262 of the protruding portion. The corner portion 262 may be provided at a boundary where the first gap retaining portion 30 and the second gap retaining portion 40 contact in the optical axis direction.

[0104] The first protruding portion 213 and the second protruding portion 214 may be disposed in a groove 52 formed by the first gap maintaining portion 30 and the second gap maintaining portion 40. The shape of the groove 52 may correspond to the shape of the first protruding portion 213 and the second protruding portion 214. The groove 52 may be formed between the first gap maintaining portion 30 and the second gap maintaining portion 40. When the first gap maintaining portion 30 and the second gap maintaining portion 40 are stacked, the groove 52 may be formed between the first gap maintaining portion 30 and the second gap maintaining portion 40.

[0105] The groove step portion may be provided in the groove 52 formed in the first gap retaining portion 30 and the second gap retaining portion 40. The first groove step portion 310 may be provided on the first gap retaining portion 30. The first groove step portion 310 may protrude from the object side to the image side. The first groove step portion 310 may be provided in the first concave groove 250. The first groove step portion 310 may have a shape corresponding to the shape of the first concave groove 250. The second groove step portion 410 may be provided on the second gap retaining portion 40. The second groove step portion 410 may protrude from the image side to the object side. The second groove step portion 410 may be provided in the second concave groove 240. The second groove step portion 410 may have a shape corresponding to the shape of the second concave groove 240.

[0106] Figure 8 According to the fourth embodiment, Figure 2 Part A of Fig. 9 The gap maintaining portion is not included. Figure 8 ,as well as Fig.10 Shown without lens Figure 8 .

[0107] The protrusion may be a two-stage protrusion. That is, the protrusion may include a first protrusion 215 protruding directly from the side surface of the flange portion 22 and a second protrusion 216 protruding directly from the first protrusion 215. That is, the optical portion 21, the flange portion 22, the first protrusion 215, and the second protrusion 216 may be sequentially arranged based on a direction perpendicular to the optical axis.

[0108] The first protrusion portion 215 may protrude from the side surface of the flange portion 22 in a direction perpendicular to the optical axis. The width of a cross section of the first protrusion portion 215 may be constant. A lower surface and an upper surface of the first protrusion portion 215 may be parallel surfaces.

[0109] The recessed groove may be provided between the side surface of the flange portion 22 and the second protrusion portion 216. The recessed groove may include a first recessed groove 251 and a second recessed groove 241.

[0110] refer to Fig. 9 , the first concave groove 251 may be disposed in the lower portion, and the second concave groove 241 may be disposed in the upper portion. The first concave groove 251 may be formed to be concave from the object side to the image side, and the second concave groove 241 may be formed to be concave from the image side to the object side. The first concave groove 251 and the second concave groove 241 may be disposed symmetrically with respect to a line perpendicular to the optical axis.

[0111] The second protrusion portion 216 may include a first inclined surface 223 and a second inclined surface 233 .

[0112] like Fig. 9 As shown in FIG. 2 , the first inclined surface 223 may be an inclined surface disposed below the second inclined surface 233. The first inclined surface 223 may be an inclined surface whose distance from the optical axis increases from the object side to the image side.

[0113] like Fig. 9 As shown in FIG. 2 , the second inclined surface 233 may be an inclined surface disposed above the first inclined surface 223. The second inclined surface 233 may be an inclined surface whose distance from the optical axis decreases from the object side to the image side.

[0114] The first inclined surface 223 and the second inclined surface 233 may be connected to each other. Specifically, the first inclined surface 223 and the second inclined surface 233 may be connected to each other on a side away from the optical portion 21 of the lens 20. The portion where the first inclined surface 223 and the second inclined surface 233 are connected to each other may be referred to as a corner portion 263 of the protruding portion. The corner portion 263 may be provided at a boundary where the first gap retaining portion 30 and the second gap retaining portion 40 contact in the optical axis direction.

[0115] refer to Fig. 9 and Fig.10 , the first protruding portion 215 and the second protruding portion 216 may be disposed in the groove 53 formed in the gap retaining portions 30 and 40. That is, the groove 53 having a shape corresponding to the shape of the first protruding portion 215 and the second protruding portion 216 may be disposed in the gap retaining portions 30 and 40. When the first gap retaining portion 30 and the second gap retaining portion 40 are stacked, the groove 53 may be formed between the first gap retaining portion 30 and the second gap retaining portion 40.

[0116] The groove step portion may be provided in the groove 53 formed in the gap retaining portions 30 and 40. The first groove step portion 311 may be provided on the first gap retaining portion 30. The first groove step portion 311 may protrude from the object side to the image side. The first groove step portion 311 may be provided in the first concave groove 251. The first groove step portion 311 may have a shape corresponding to the shape of the first concave groove 251. The second groove step portion 411 may be provided on the second gap retaining portion 40. The second groove step portion 411 may protrude from the image side to the object side. The second groove step portion 411 may be provided in the second concave groove 241. The second groove step portion 411 may have a shape corresponding to the shape of the second concave groove 241.

[0117] Fig.11 According to the fifth embodiment, Figure 2 Part A of Fig.12 The gap maintaining portion is not included. Fig.11 ,as well as Fig.13 Shown without lens Fig.11 .

[0118] The protrusion portion 217 may directly protrude from the side surface of the flange portion 22. The protrusion portion 217 may protrude from the side surface of the flange portion 22 in a direction perpendicular to the optical axis.

[0119] The recessed groove may be provided on the protruding portion 217. The recessed groove may include a first recessed groove 252 and a second recessed groove 242. Fig.12 , the first concave groove 252 may be disposed in the lower portion, and the second concave groove 242 may be disposed in the upper portion. The first concave groove 252 may be formed to be concave from the object side to the image side, and the second concave groove 242 may be formed to be concave from the image side to the object side. The first concave groove 252 and the second concave groove 242 may be disposed symmetrically with respect to a line perpendicular to the optical axis.

[0120] The protruding portion 217 may be disposed in a groove 54 formed in the gap retaining portions 30 and 40. That is, a groove 54 having a shape corresponding to the shape of the protruding portion 217 may be disposed in the gap retaining portions 30 and 40. When the first gap retaining portion 30 and the second gap retaining portion 40 are stacked, the groove 54 may be formed between the first gap retaining portion 30 and the second gap retaining portion 40.

[0121] The groove step portion may be provided in the groove 54 formed in the gap retaining portions 30 and 40. The first groove step portion 312 may be provided on the first gap retaining portion 30. The first groove step portion 312 may protrude from the object side to the image side. The first groove step portion 312 may be provided in the first recessed groove 252. The first groove step portion 312 may have a shape corresponding to the shape of the first recessed groove 252. The second groove step portion 412 may be provided on the second gap retaining portion 40. The second groove step portion 412 may protrude from the image side to the object side. The second groove step portion 412 may be provided in the second recessed groove 242. The second groove step portion 412 may have a shape corresponding to the shape of the second recessed groove 242.

[0122] Fig.14 According to the sixth embodiment, Figure 2 Part A of

[0123] The protrusion may be a two-stage protrusion. That is, the protrusion may include a first protrusion 218 protruding directly from the side surface of the flange portion 22 and a second protrusion 219 protruding directly from the first protrusion 218. That is, the optical portion 21, the flange portion 22, the first protrusion 218, and the second protrusion 219 may be sequentially arranged based on a direction perpendicular to the optical axis.

[0124] The first protrusion 218 may protrude from the side surface of the flange portion 22 in a direction perpendicular to the optical axis. The width of the cross section of the first protrusion 218 may narrow as the distance from the optical axis increases. The first protrusion 218 may include a first inclined surface 224 and a second inclined surface 234.

[0125] like Fig.14 As shown in FIG. 2 , the first inclined surface 224 may be an inclined surface disposed below the second inclined surface 234. The first inclined surface 224 may be an inclined surface whose distance from the optical axis increases from the object side to the image side.

[0126] like Fig.14 As shown in FIG. 2 , the second inclined surface 234 may be an inclined surface disposed above the first inclined surface 224. The second inclined surface 234 may be an inclined surface whose distance from the optical axis decreases from the object side to the image side.

[0127] The second protrusion portion 219 may protrude from the side surface of the first protrusion portion 218 in a direction perpendicular to the optical axis. The width of the cross section of the second protrusion portion 219 may be constant. That is, the upper and lower surfaces of the second protrusion portion 219 may be parallel to each other.

[0128] The first protruding portion 218 and the second protruding portion 219 may be disposed in a groove 55 formed in the gap retaining portions 30 and 40. That is, the gap retaining portions 30 and 40 may have a groove 55 having a shape corresponding to the shape of the first protruding portion 218 and the second protruding portion 219. The groove 55 may be formed between the first gap retaining portion 30 and the second gap retaining portion 40. The first gap retaining portion 30 and the second gap retaining portion 40 may be stacked to form the groove 55 between the first gap retaining portion 30 and the second gap retaining portion 40.

[0129] In the exemplary lens module, there is an effect of preventing flare by shortening the flange portion of the lens and providing a gap holding portion formed of an opaque material between the side surface of the lens and the inner peripheral surface of the lens barrel. In addition, since a groove in which the protruding portion on the side surface of the lens is provided is formed in the gap holding portion, there is an advantage in facilitating alignment of the gap holding portion and the lens.

[0130] As set forth above, according to one or more examples, flare occurring in a lens module may be reduced, and assembly of the lens module may be facilitated.

[0131] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application 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 understood in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each example should be considered applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device, or circuit are combined in a different manner and / or replaced or supplemented by other components or their equivalents, appropriate results can still be achieved.

[0132] Therefore, the scope of the present disclosure includes the claims and their equivalents in addition to the above disclosure and all the accompanying drawings, that is, all modifications within the scope of the claims and their equivalents should be construed as being included in the present disclosure.

Claims

1. Lens module, including: a lens barrel, including a hollow portion; a lens disposed in the hollow portion of the lens barrel; as well as a gap holding portion provided in the hollow portion of the lens barrel and also provided between a side surface of the lens and an inner peripheral surface of the lens barrel, wherein a protruding portion is provided on the side surface of the lens, the protruding portion protruding toward the inner peripheral surface of the lens barrel, and A groove is formed in the gap retaining portion, and the protruding portion is disposed in the groove.

2. The lens module according to claim 1, wherein: The groove has a shape corresponding to that of the protruding portion.

3. The lens module according to claim 1, wherein: The gap maintaining portion comprises: a first gap maintaining portion; and a second gap maintaining portion, disposed above the first gap maintaining portion, Wherein, the groove is arranged between the first gap maintaining portion and the second gap maintaining portion.

4. The lens module according to claim 1, wherein: The protruding portion includes an inclined surface whose distance from the optical axis increases from the object side toward the image side.

5. The lens module according to claim 1, wherein: The protruding parts include: a first inclined surface, the distance between the first inclined surface and the optical axis increasing from the object side to the image side; and a second inclined surface, the distance between the second inclined surface and the optical axis decreasing from the object side to the image side, The first inclined surface and the second inclined surface are connected on a side away from the optical axis.

6. The lens module according to claim 3, wherein: A width of a cross section of the protruding portion parallel to the optical axis becomes narrower as a distance from the optical axis increases.

7. The lens module according to claim 3, wherein: The protruding parts include: a first inclined surface maintaining partial contact with the first gap; and a second inclined surface, maintaining partial contact with the second gap, Wherein, the first inclined surface and the second inclined surface are connected to each other.

8. The lens module according to claim 3, wherein: The protruding parts include: a first protrusion extending directly from the side surface of the lens; and a second protruding portion extending directly from said first protruding portion, The cross section of the second protruding portion has a width parallel to the optical axis which becomes narrower as the distance from the optical axis increases.

9. The lens module according to claim 8, wherein: The second protruding portion comprises: a first inclined surface maintaining partial contact with the first gap; and a second inclined surface, maintaining partial contact with the second gap, Wherein, the first inclined surface and the second inclined surface are connected to each other.

10. The lens module according to claim 3, wherein: The protruding portion is formed with a concave groove formed to be concave from the object side to the image side, and The first gap maintaining portion includes a groove step portion provided in the recessed groove.

11. The lens module according to claim 3, wherein: The protruding parts include: A first concave groove formed to be concave from the object side to the image side; and A second concave groove is formed to be concave from the image side to the object side, The first gap maintaining portion includes a first groove step portion disposed in the first recessed groove, and the second gap maintaining portion includes a second groove step portion disposed in the second recessed groove.

12. The lens module according to claim 11, wherein: The first concave groove and the second concave groove are symmetrically arranged with respect to a line perpendicular to the optical axis.

13. The lens module according to claim 3, wherein: The protruding parts include: a first protrusion extending directly from the side surface of the lens; and a second protruding portion extending directly from said first protruding portion, The cross section of the first protruding portion has a width parallel to the optical axis which becomes narrower as the distance from the optical axis increases.

14. Lens module, comprising: a lens barrel, including a hollow portion; a lens disposed in the hollow portion of the lens barrel; as well as a first gap holding portion and a second gap holding portion, which are disposed in the hollow portion of the lens barrel and are stacked in the optical axis direction, Wherein, a side surface of the lens contacts an inner surface of the first gap maintaining portion and an inner surface of the second gap maintaining portion.

15. The lens module according to claim 14, wherein: The lens includes an optical portion and a flange portion disposed at an edge of the optical portion, wherein the first gap holding portion includes a first step portion protruding from an interior of the first gap holding portion in a direction perpendicular to the optical axis direction, and The flange portion and the first step portion overlap in the optical axis direction.

16. The lens module according to claim 15, wherein: The flange portion and the first step portion are disposed in contact with each other.

17. The lens module according to claim 14, wherein: the second gap holding portion includes a second step portion protruding from an inner portion of the second gap holding portion in a direction perpendicular to the optical axis direction, and Wherein, the second step portion overlaps with the lens in the optical axis direction.

18. The lens module according to claim 14, wherein: A seating groove formed to be recessed in the optical axis direction is provided on an upper surface of the first gap holding portion, and The second gap maintaining portion includes a protrusion disposed in the seating groove.

19. The lens module according to claim 18, wherein: The width of the seating groove narrows from the image side to the object side, and The protrusion has a shape corresponding to that of the seating groove.

Images