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 to Korean Patent Application No. 10 - 2023 - 0145905, filed on October 27, 2023, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

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

[0004] As the performance of portable devices (e.g., mobile phones) improves, high resolution is required in small camera modules installed in portable devices. Therefore, a 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 for accommodating the lens. The lens module has a structure for aligning the optical axes of the lenses by sequentially inserting the lenses into the lens barrel. In addition, a gap - holding part may be provided between the lenses, and the gap - holding part may be sequentially inserted into the lens barrel and assembled in the same manner as the lens.

[0006] The lens includes a flange part that can be used to couple the lens to the lens barrel. However, there are cases where light can enter the flange part and cause unexpected flare. Therefore, a structure of the lens and the gap - holding part that reduces flare occurring in the lens module and facilitates the assembly of the lens module is required. Summary of the Utility Model

[0007] The Summary of the Utility Model section is intended to introduce, in brief form, a selection of concepts that will be further described in the Detailed Description section below. The Summary of the Utility Model section is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0008] In general, a lens module includes: a lens barrel; a lens disposed within the lens barrel; and a gap - holding part disposed within the lens barrel and also disposed between a side surface of the lens and an inner circumferential surface of the lens barrel, wherein a protruding part protruding toward the inner circumferential surface of the lens barrel is provided on the side surface of the lens, and a groove is formed in the gap - holding part, and the protruding part is disposed in the groove.

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

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

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

[0012] The protruding portion may include: a first inclined surface, and the distance from the first inclined surface to the optical axis increases from the object side to the image side; and a second inclined surface, and the distance from the second inclined surface to 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] The width of the cross section of the protruding portion parallel to the optical axis may become narrower as the distance from the optical axis increases.

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

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

[0016] The second protruding portion may include a first inclined surface in contact with the first gap holding portion and a second inclined surface in contact with the second gap holding 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 that is recessed from the object side to the image side, and the first gap holding 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 holding portion may include a first groove step portion provided in the first recessed groove, and the second gap holding portion may include a second groove step portion provided in the second recessed groove.

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

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

[0021] In general, the lens module includes: a lens barrel; a lens disposed within the lens barrel; and a first gap holding portion and a second gap holding portion disposed within 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 holding portion and an inner surface of the second gap holding portion.

[0022] The lens may include an optical portion and a flange portion disposed at an edge of the optical portion, wherein the first gap holding portion may include a first stepped portion protruding from an interior of the first gap holding portion in a direction perpendicular to the optical axis direction, and wherein the flange portion and the first stepped portion may overlap in the optical axis direction.

[0023] The flange portion and the first stepped portion may be arranged to contact each other.

[0024] The second gap holding portion may include a second stepped portion protruding from an interior of the second gap holding portion in a direction perpendicular to the optical axis direction, and wherein the second stepped portion may overlap with the lens in the optical axis direction.

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

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

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

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

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

[0030] Figure 3 is showing according to the first embodiment Figure 2 of part A of the.

[0031] Figure 4 is showing according to the second embodiment Figure 2 of part A of the.

[0032] Figure 5 is showing according to the third embodiment Figure 2 of part A of the.

[0033] Figure 6 shows the one that does not include a gap holding portion Figure 5 .

[0034] Figure 7 shows the one that does not include a lens Figure 5 .

[0035] Figure 8 shows part A of Figure 2 according to the fourth embodiment

[0036] Figure 9 shows the one that does not include a gap holding portion Figure 8 .

[0037] Figure 10 shows the one that does not include a lens Figure 8 .

[0038] Figure 11 shows part A of Figure 2 according to the fifth embodiment

[0039] Figure 12 shows the one that does not include a gap holding portion Figure 11 .

[0040] Figure 13 shows the one that does not include a lens Figure 11 .

[0041] Figure 14 shows part A of Figure 2 according to the sixth embodiment

[0042] In the entire drawings and the detailed description, unless otherwise described, the same reference numerals refer to the same elements. For clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative dimensions, ratios, and descriptions of the elements in the drawings may be exaggerated. Detailed Description

[0043] The following specific embodiments are provided to assist the reader in obtaining 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 disclosure of this application. For example, the order of operations described herein and / or the sequence of operations described herein are merely examples, and are not limited to the sequences set forth herein except for the order of operations and / or the sequence of operations that must occur in a specific sequence, and can be changed, which will be apparent after understanding the disclosure of this application. As another example, the order of operations and / or the sequence of operations can be performed in parallel, except for at least a portion of the order of operations and / or the sequence of operations that must occur in a sequence (e.g., a specific sequence). Additionally, descriptions of features known after understanding the disclosure of this application may be omitted for greater clarity and conciseness.

[0044] Although terms such as "first", "second", and "third" or A, B, (a), (b), etc. 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. None of these terms is used to define, for example, the importance, sequence, or order of the corresponding component, part, region, layer, or section, but is only used to distinguish the corresponding component, part, region, layer, or section from other components, parts, regions, layers, or sections. Thus, 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 can also be referred to as the second component, second part, second region, second layer, or second section.

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

[0046] The terms used herein are for describing various examples only and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the words "a," "an," and "the" are intended to include the plural forms as well. As a non-limiting example, the words "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, or the presence of alternative stated features, quantities, operations, components, elements, and / or combinations thereof. Additionally, although one embodiment may state that the words "comprising," "including," and "having" indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, there may be other embodiments in which one or more of the stated features, quantities, operations, components, elements, and / or combinations thereof are absent.

[0047] As used herein, the phrase "and / or" includes any one of the associated listed items and any combination of any two or more of them. Phrases such as "at least one of A, B, and C" are intended to have a disjunctive meaning, and such phrases as "at least one of A, B, and C" 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 embodiments 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 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, apparatuses, and / or systems described herein that will be apparent after understanding the disclosure of the present application. Herein, the use of the word "may" with respect to an example or embodiment (e.g., with respect to what an example or embodiment may include or implement) means that there is at least one example or embodiment in which such a feature is included or implemented, while all examples or embodiments are not limited thereto. The words "example" or "embodiment" used herein have the same meaning (e.g., the phrase "in one example" has the same meaning as "in one embodiment," and "in one or more examples" has the same meaning as "in one or more embodiments").

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

[0050] For purposes of explanation, with respect to the optical axis, the direction away from the optical axis in a direction perpendicular to the optical axis may be referred to as the outside, and with respect to the optical axis, the direction closer to the optical axis in a direction perpendicular to the optical axis may be referred to as the inside. Additionally, based on the drawings shown for purposes of explanation, the upper and lower portions may be distinguished and explained.

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

[0052] Reference Figure 1 and Figure 2 , the lower portion is the object side, and the upper portion is the image side.

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

[0054] Reference Figure 1 and Figure 2 , one lens and two gap holding portions are shown. However, this is only for purposes of illustration. Thus, the lens module may include a plurality of lenses, and may include a plurality of gap holding 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. The plurality of lenses may be stacked in the optical axis direction and disposed in the hollow portion 11 of the lens barrel 10. The gap holding portion 30 or 40 may be disposed in the hollow portion 11 of the lens barrel 10. The gap holding portion 30 or 40 may be disposed between the plurality of lenses, and the number thereof may vary according to the implementation. The plurality of gap holding 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 holding portions 30 and 40.

[0056] Merely as an example, the lens 20 may be formed of glass, a glass molded article, a thermosetting resin, a thermoplastic resin, or 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 the edge of the optical portion 21. In one or more examples, the flange portion 22 may contact the gap holding portions 30 and 40. The protruding portion 210 may be provided on the side surface of the flange portion 22. The gap holding portions 30 and 40 may be provided between the side surface of the flange portion 22 and the inner peripheral surface of the lens barrel 10. That is, the side surface of the flange portion 22 may be spaced apart from the inner peripheral surface of the lens barrel 10 by the gap holding 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 can be prevented.

[0060] The gap holding portions 30 and 40 may be provided inside the lens barrel 10. The gap holding portions 30 and 40 may be provided in the hollow portion 11 of the lens barrel 10. The gap holding portions 30 and 40 may be formed of an annular member. That is, the gap holding portions 30 and 40 may also include a hollow portion, and light may enter through the hollow portion of the gap holding portions 30 and 40.

[0061] The gap holding portions 30 and 40 may separate the lens 20 from the lens barrel 10. That is, at least a part of the gap holding portions 30 and 40 may be provided between the lens 20 and the inner peripheral surface of the lens barrel 10. Specifically, at least a part of the gap holding portions 30 and 40 may be provided 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 surface of the gap holding portions 30 and 40 may be provided to contact the side surface of the lens 20.

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

[0063] Reference Figure 2 , in an example, the first gap holding portion 30 may be provided at the lower part of the lens barrel 10, and the second gap holding portion 40 may be provided at the upper part of the lens barrel 10. The first gap holding portion 30 and the second gap holding portion 40 may be stacked in the lens barrel 10 in the optical axis direction. The inner surface of the first gap holding portion 30 may contact the side surface of the lens 20, and the inner surface of the second gap holding portion 40 may also contact the 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 the length measured in the optical axis direction. The individual 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. Thus, the lens 20 and other lenses may be spaced apart in the optical axis direction by the gap holding portions 30 and 40.

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

[0066] The first step portion 31 may be arranged to overlap 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, the one surface of the flange portion 22 that contacts the first step portion 31 may be the object side surface. The first step portion 31 may cover the flange portion 22 in the optical axis direction, and through this structure, light incident on the flange portion 22 can be prevented from diffusely reflecting inside the lens 20.

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

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

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

[0070] The second step portion 41 can be arranged to overlap with the optical portion 21 in the optical axis direction. The second step portion 41 can face the image side surface of the optical portion 21. In the example, the second step portion 41 can block a part of the edge portion of the optical portion 21 in the optical axis direction, and through this structure, the second step portion 41 can prevent light from diffusely reflecting in the edge region of the optical portion 21.

[0071] One surface of the second gap holding portion 40 can be in contact with the first gap holding portion 30. In the example, one surface of the second gap holding portion 40 can be the object side surface of the second gap holding portion 40. Based on Figure 3 , the object side surface of the second gap holding portion 40 can be referred to as the lower surface of the second gap holding portion 40.

[0072] The protrusion 42 can be arranged on the lower surface of the second gap holding portion 40. The protrusion 42 can be formed to protrude from the lower surface of the second gap holding portion 40 in the optical axis direction. The width of the protrusion 42 can become narrower from the image side to the object side, and the shape of the protrusion 42 can correspond to the shape of the placement groove 32. The protrusion 42 can be arranged in the placement groove 32.

[0073] Through the structure of the placement groove 32 of the first gap holding portion 30 and the protrusion 42 of the second gap holding portion 40, the first gap holding portion 30 and the second gap holding portion 40 can 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 protruding portion 210 can be arranged on the side surface of the lens 20. Specifically, the protruding portion 210 can be arranged on the side surface of the flange portion 22 of the lens 20. In other words, the side surface of the lens 20 can refer to the same portion as the side surface of the flange portion 22.

[0076] The protruding portion 210 can protrude from the side surface of the lens 20 toward the inner peripheral surface of the lens barrel 10. In this example, the protruding portion 210 can 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 protruding portion 210 can have a sharp end at the end away from the optical axis. When the length of the cross-section of the protruding portion 210 measured in the optical axis direction is defined as the width, the width of the cross-section of the protruding portion 210 can become narrower as the distance from the optical axis increases.

[0078] The protruding portion 210 may have a symmetric 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 plural inclined surfaces 220 and 230 may include a first inclined surface 220 and a second inclined surface 230.

[0080] As Figure 3 shown, the first inclined surface 220 may be an inclined surface provided 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] As Figure 3 shown, the second inclined surface 230 may be an inclined surface provided 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 provided at the boundary where the first gap holding portion 30 and the second gap holding portion 40 contact each other in the optical axis direction.

[0083] The protruding portion 210 may be provided in a groove 50 formed in the gap holding portions 30 and 40. That is, the gap holding 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 provided between the first gap holding portion 30 and the second gap holding portion 40. When the first gap holding portion 30 and the second gap holding portion 40 are stacked, the groove 50 may be formed between the first gap holding portion 30 and the second gap holding portion 40.

[0084] Figure 4 Shows a part A of Figure 2 according to the second embodiment.

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

[0086] The first protruding portion 211 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 protruding portion 211 may be constant. The lower surface and the upper surface of the first protruding portion 211 may be parallel surfaces.

[0087] The second protruding portion 212 may protrude from the side surface of the first protruding portion 211 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 protruding portion 212 may become narrower.

[0088] The second protruding portion 212 may have a symmetric structure with respect to a line perpendicular to the optical axis. In the 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 second protruding portion 212.

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

[0090] As Figure 4 shown, the first inclined surface 221 may be an inclined surface provided 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] As Figure 4 shown, the second inclined surface 231 may be an inclined surface provided 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 holding portion 30 and the second gap holding portion 40 contact each other in the optical axis direction.

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

[0094] Figure 5 shows the A part in Figure 2 according to the third embodiment, Figure 6 shows the one that does not include the gap holding part, Figure 5 and Figure 7 shows the one that does not include the lens. Figure 5 .

[0095] Referring to Figure 5 , Figure 6 and Figure 7 , the protruding part can be a two-stage protruding part. That is, the protruding part can include a first protruding part 213 that directly protrudes from the side surface of the flange part 22 and a second protruding part 214 that directly protrudes from the first protruding part 213. That is, the optical part 21, the flange part 22, the first protruding part 213, and the second protruding part 214 can be arranged in sequence based on the direction perpendicular to the optical axis.

[0096] The first protruding part 213 can protrude from the side surface of the flange part 22 in the direction perpendicular to the optical axis. The width of the cross-section of the first protruding part 213 can be constant. The lower surface and the upper surface of the first protruding part 213 can be parallel surfaces.

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

[0098] The upper surface and the lower surface of the second protruding part 214 can be parallel surfaces. The distance between the upper surface and the lower surface of the second protruding part 214 can be greater than the distance between the upper surface and the lower surface of the first protruding part 213.

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

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

[0101] As shown in Figure 6As shown in the figure, 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] As Figure 6 shown in the figure, 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 the corner portion 262 of the protruding portion. The corner portion 262 may be provided at the boundary where the first gap holding portion 30 and the second gap holding portion 40 are in contact with each other in the optical axis direction.

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

[0105] A groove step portion may be provided in the groove 52 formed in the first gap holding portion 30 and the second gap holding portion 40. A first groove step portion 310 may be provided on the first gap holding 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 recessed groove 250. The first groove step portion 310 may have a shape corresponding to the shape of the first recessed groove 250. A second groove step portion 410 may be provided on the second gap holding 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 recessed groove 240. The second groove step portion 410 may have a shape corresponding to the shape of the second recessed groove 240.

[0106] Figure 8 Shows a part A in Figure 2 according to the fourth embodiment, Figure 9 shows a part without a gap holding portion, Figure 8 and Figure 10 shows a part without a lensFigure 8 。

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

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

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

[0110] Reference Figure 9 , the first recessed groove 251 can be provided in the lower part, and the second recessed groove 241 can be provided in the upper part. The first recessed groove 251 can be formed to be recessed from the object side to the image side, and the second recessed groove 241 can be formed to be recessed from the image side to the object side. The first recessed groove 251 and the second recessed groove 241 can be symmetrically arranged with respect to the line perpendicular to the optical axis.

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

[0112] As Figure 9 shown, the first inclined surface 223 can be an inclined surface provided below the second inclined surface 233. The first inclined surface 223 can be an inclined surface whose distance from the optical axis increases from the object side to the image side.

[0113] As Figure 9 shown, the second inclined surface 233 can be an inclined surface provided above the first inclined surface 223. The second inclined surface 233 can 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 can be connected to each other. Specifically, the first inclined surface 223 and the second inclined surface 233 can be connected to each other on the 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 can be referred to as the corner portion 263 of the protruding portion. The corner portion 263 can be provided at the boundary where the first gap - holding portion 30 and the second gap - holding portion 40 contact in the optical axis direction.

[0115] Reference Figure 9 and Figure 10 The first protruding portion 215 and the second protruding portion 216 can be disposed in the groove 53 formed in the gap holding portions 30 and 40. That is, the groove 53 having a shape corresponding to the shapes of the first protruding portion 215 and the second protruding portion 216 can be provided in the gap holding portions 30 and 40. When the first gap holding portion 30 and the second gap holding portion 40 are stacked, the groove 53 can be formed between the first gap holding portion 30 and the second gap holding portion 40.

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

[0117] Figure 11 Shows the A portion in Figure 2 according to the fifth embodiment, Figure 12 shows the one without the gap holding portion, Figure 11 and Figure 13 shows the one without the lens. Figure 11 .

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

[0119] A recessed groove can be provided in the protruding portion 217. The recessed groove can include a first recessed groove 252 and a second recessed groove 242. Reference Figure 12 , the first recessed groove 252 can be provided in the lower part, and the second recessed groove 242 can be provided in the upper part. The first recessed groove 252 can be formed to be recessed from the object side toward the image side, and the second recessed groove 242 can be formed to be recessed from the image side toward the object side. The first recessed groove 252 and the second recessed groove 242 can be symmetrically provided with respect to a line perpendicular to the optical axis.

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

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

[0122] Figure 14 The A portion of Figure 2 according to the sixth embodiment is shown.

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

[0124] The first protruding portion 218 can protrude from the side surface of the flange portion 22 in the direction perpendicular to the optical axis. As the distance from the optical axis increases, the width of the cross section of the first protruding portion 218 can become narrower. The first protruding portion 218 can include a first inclined surface 224 and a second inclined surface 234.

[0125] As Figure 14 shown, the first inclined surface 224 can be an inclined surface disposed below the second inclined surface 234. The first inclined surface 224 can be an inclined surface whose distance from the optical axis increases from the object side toward the image side.

[0126] As Figure 14 shown, the second inclined surface 234 can be an inclined surface disposed above the first inclined surface 224. The second inclined surface 234 can be an inclined surface whose distance from the optical axis decreases from the object side toward the image side.

[0127] The second protruding portion 219 may protrude from a side surface of the first protruding portion 218 in a direction perpendicular to the optical axis. The width of a cross-section of the second protruding portion 219 may be constant. That is, an upper surface and a lower surface of the second protruding 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 holding portions 30 and 40. That is, the gap holding portions 30 and 40 may have a groove 55 having a shape corresponding to the shapes of the first protruding portion 218 and the second protruding portion 219. The groove 55 may be formed between the first gap holding portion 30 and the second gap holding portion 40. The first gap holding portion 30 and the second gap holding portion 40 may be stacked to form a groove 55 between the first gap holding portion 30 and the second gap holding portion 40.

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

[0130] As set forth above, according to one or more examples, flare occurring in a lens module can be reduced, and assembly of the lens module can 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 can 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 a feature or aspect in each example should be considered to be applicable to similar features or aspects in other examples. Appropriate results can still be achieved if the described techniques are performed in a different order and / or if the components in the described systems, architectures, devices, or circuits are combined in a different manner and / or replaced or supplemented by other components or their equivalents.

[0132] Accordingly, in addition to the above disclosure and all the accompanying drawings disclosure, the scope of the present disclosure also includes the claims and their equivalents, that is, all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. A lens module, characterized in that, 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 also between a lateral surface of the lens and an inner circumferential surface of the lens barrel, wherein a protruding portion is provided on the lateral surface of the lens, the protruding portion protruding toward the inner circumferential surface of the lens barrel, and wherein a groove is formed in the gap holding 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 the shape of the protruding portion.

3. The lens module according to claim 1, characterized in that, The gap holding portion includes: A first gap holding portion; and A second gap holding portion disposed above the first gap holding portion, wherein the groove is disposed between the first gap holding portion and the second gap holding portion.

4. The lens module according to claim 1, characterized in that, The protruding portion includes an inclined surface, and a distance of the inclined surface from the optical axis increases from the object side to the image side.

5. The lens module according to claim 1, characterized in that The protruding portion includes: A first inclined surface, a distance of the first inclined surface from the optical axis increasing from the object side to the image side; and A second inclined surface, a distance of the second inclined surface from the optical axis decreasing from the object side to the image side, wherein 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, characterized in that, The protruding portion includes: A first inclined surface in contact with the first gap holding portion; and A second inclined surface in contact with the second gap holding portion, 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 portion includes: A first protruding portion directly extending from the lateral surface of the lens; and A second protruding portion directly extending from the first protruding portion, wherein a width of a cross-section of the second protruding portion parallel to the optical axis becomes narrower as a distance from the optical axis increases.

9. The lens module according to claim 8, wherein The second protruding portion includes: A first inclined surface in contact with the first gap holding portion; and A second inclined surface in contact with the second gap holding portion, wherein the first inclined surface and the second inclined surface are connected to each other.

10. The lens module according to claim 3, characterized in that, A recessed groove is formed in the protruding portion, the recessed groove being formed to be recessed from the object side to the image side, and the first gap holding portion includes a groove step portion disposed in the recessed groove.

11. The lens module according to claim 3, characterized in that, The protruding portion includes: 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 holding portion includes a first groove step portion disposed in the first recessed groove, and the second gap holding portion includes a second groove step portion disposed in the second recessed groove.

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

13. The lens module according to claim 3, wherein, The protruding portion includes: A first protruding portion directly extending from the lateral surface of the lens; and A second protruding portion directly extending from the first protruding portion, Among them, the cross-section of the first protruding portion has a width parallel to the optical axis that narrows as the distance from the optical axis increases.

14. Lens module, characterized in that, The lens module includes: A lens barrel; A lens disposed within the lens barrel; and A first gap holding portion and a second gap holding portion, disposed within 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 holding portion and an inner surface of the second gap holding portion.

15. The lens module according to claim 14, wherein The lens includes an optical portion and a flange portion provided at an edge of the optical portion, wherein the first gap holding portion includes a first stepped portion that protrudes from the inside of the first gap holding portion in a direction perpendicular to the optical axis direction, and wherein the flange portion and the first stepped portion overlap in the optical axis direction.

16. The lens module according to claim 15, characterized in that, The flange portion and the first stepped portion are arranged to contact each other.

17. The lens module according to claim 14, wherein, The second gap holding portion includes a second stepped portion that protrudes from the inside of the second gap holding portion in a direction perpendicular to the optical axis direction, and wherein the second stepped portion overlaps the lens in the optical axis direction.

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

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

Images