Lens module

Abstract

The present application relates to a lens module, comprising: a lens barrel comprising a first lens chamber and a second lens chamber arranged along an optical axis, wherein an inner edge surface of the lens barrel has an extension part between the first lens chamber and the second lens chamber, and the extension part forms a light passing hole which communicates the first lens chamber and the second lens chamber; and a first lens arranged in the first lens chamber and having a first optical area surrounding the optical axis and a first non-optical area surrounding the outside of the first optical area, wherein the first non-optical area comprises a first convex part arranged in the light passing hole.

Description

Technical Field

[0001] This invention relates to the field of lens technology, and more specifically to a lens module. Background Technology

[0002] With the booming development of consumer electronics, lens modules have been widely used in mobile phones, laptops, tablets, televisions, automobiles, security systems, and more. The quality of the lens module directly affects image quality, and the lens assembly process is often particularly critical. Existing lens modules consist of several lenses assembled sequentially into the lens barrel. Multiple lens assembly processes will introduce multiple assembly errors. Reducing these assembly errors will significantly improve image quality.

[0003] In existing lens modules, the lens barrel sequentially houses the first to Nth lens elements, with the first lens element fixed to the inner sidewall of the lens barrel. After assembly, this first lens element and the lens barrel are prone to deformation. This deformation is particularly pronounced when the ratio of the outer diameter to the optically effective area thickness of the first lens element is large. Ultra-wide-angle or wide-angle lenses typically have a high ratio of the outer diameter to the optically effective area thickness of the first lens element, leading to optically effective area deformation. Therefore, a change in the lens module structure is necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a lens module to solve the problems of deformation of the assembled lens and lens barrel and deformation of the optically effective area.

[0005] In accordance with the above objectives, the present invention provides a lens module, comprising: a lens barrel including a first lens chamber and a second lens chamber arranged along an optical axis, wherein an extension is provided on an inner edge surface of the lens barrel, the extension being located between the first lens chamber and the second lens chamber, and the extension being provided with a light-transmitting hole communicating with the first lens chamber and the second lens chamber; and a first lens element disposed in the first lens chamber, having a first optical region surrounding the optical axis and a first non-optical region surrounding the outer side of the first optical region, wherein the first non-optical region includes a first protrusion disposed in the light-transmitting hole.

[0006] In one embodiment of the present invention, the first protrusion includes an inner side surface, an outer side surface, and a top surface connecting the inner side surface and the outer side surface, and the outer side surface of the first protrusion contacts the extension of the lens barrel.

[0007] In one embodiment of the present invention, a second lens is further included, disposed in the second lens chamber, and having a second optical region surrounding the optical axis and a second non-optical region surrounding the outer side of the second optical region, wherein the extension is axially disposed between the first non-optical region of the first lens and the second non-optical region of the second lens, and the outer diameter of the first lens is larger than the outer diameter of the second lens.

[0008] In one embodiment of the invention, the first lens has an outer annular surface that does not contact the inner edge surface of the lens barrel.

[0009] In one embodiment of the invention, the second lens has an outer circumferential surface that contacts the inner edge of the lens barrel.

[0010] In one embodiment of the present invention, the second lens has an outer ring surface that does not contact the inner edge surface of the lens barrel, the second non-optical region includes a second protrusion, and the second protrusion is disposed in the light-transmitting hole.

[0011] In one embodiment of the present invention, the inner diameter of an inner edge surface of the light-transmitting hole is the minimum inner diameter of the inner edge surface of the lens barrel.

[0012] In one embodiment of the present invention, the first protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the first protrusion and the inner edge surface of the light-transmitting hole is parallel to the optical axis.

[0013] In one embodiment of the present invention, the first protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the first protrusion and the inner edge surface of the light-transmitting hole is inclined to the optical axis.

[0014] In one embodiment of the present invention, the second protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the second protrusion and the inner edge surface of the light-transmitting hole is parallel to the optical axis.

[0015] In one embodiment of the present invention, the second protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the second protrusion and the inner edge surface of the light-transmitting hole is inclined to the optical axis.

[0016] In one embodiment of the present invention, both the first protrusion and the second protrusion are annular.

[0017] According to the lens module disclosed in this invention, a first convex portion of a first lens element is disposed in the light-transmitting aperture, and the outer circumferential surface of the first lens element does not need to contact the inner edge surface of the lens barrel, thus solving the problem of distortion in the optically effective area of ​​the first lens element of a wide-angle or ultra-wide-angle lens. Furthermore, according to the lens module disclosed in this invention, a second convex portion of a second lens element is disposed in the light-transmitting aperture, and the outer circumferential surface of the second lens element does not need to contact the inner edge surface of the lens barrel, thus improving the distortion problem caused by the second lens element being assembled into the lens barrel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded perspective view of the lens module according to the first embodiment of the present invention.

[0020] Figure 2a This is a schematic cross-sectional view of the lens module according to the first embodiment of the present invention.

[0021] Figure 2b This is a three-dimensional schematic diagram of the lens module assembly according to the first embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of the lens barrel of the lens module of the present invention.

[0023] Figure 4 for Figure 2a An enlarged cross-sectional view of part A of the lens module.

[0024] Figure 5 for Figure 2a A magnified cross-sectional view of part B on the bottom surface of the lens module.

[0025] Figure 6a This is a schematic cross-sectional view of the lens module according to the second embodiment of the present invention.

[0026] Figure 6b This is a three-dimensional schematic diagram of the lens module assembly according to the second embodiment of the present invention.

[0027] Figure 7 for Figure 6a A magnified cross-sectional view of part A' of the lens module.

[0028] Figure 8 for Figure 6a A magnified cross-sectional view of part B' of the lens module.

[0029] Explanation of key component symbols:

[0030] 1 is the lens module; 10 is the lens barrel; 101 is the first lens chamber; 102 is the second lens chamber; 103 is the inner edge surface of the lens barrel; 104 is the extension; 105 is the light aperture; 1051 is the inner edge surface of the light aperture; 11 is the first lens element; 110 is the first protrusion; 1101 is the inner surface; 1102 is the outer surface; 1103 is the top surface; 111 is the first optical zone; 112 is the first non-optical zone; 113 is the outer ring surface; 114 is the contact surface; 12 is the second lens element; 120 is the second protrusion; 123 is the outer ring surface; 124 is the contact surface; 13 is the third lens element; 14 is the fourth lens element; 151 is the retaining ring; 152 is the retaining ring; 2 is the lens module; 20 is the lens barrel; 201 is the first mirror chamber; 202 is the second mirror chamber; 203 is the inner edge surface of the mirror tube; 204 is the extension; 205 is the light-transmitting aperture; 2051 is the inner edge surface of the light-transmitting aperture; 21 is the first lens; 210 is the first convex part; 2101 is the inner surface; 2102 is the outer surface; 2103 is the top surface; 211 is the first optical zone; 212 is the first non-optical zone; 213 is the outer ring surface; 214 is the contact surface; 22 is the second lens; 220 is the second convex part; 223 is the outer ring surface; 224 is the contact surface; 23 is the third lens; 24 is the fourth lens; 251 is the pressure ring; 252 is the pressure ring; A is a part; A' is a part; B is a part; B' is a part; I is the optical axis. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] See Figure 1 , Figure 2a , Figure 2b and Figure 3The present invention provides a lens module 1, which includes, for example, a lens barrel 10 and a first lens 11 to an Nth lens (e.g., a first lens 11, a second lens 12, a third lens 13, and a fourth lens 14). The first lens 11 to the Nth lens may be made of plastic or glass. The lens barrel 10 is a one-piece lens barrel and may be made of plastic. Two lens chambers inside the lens barrel 10 house the first lens 11 to the Nth lens. For example, the first lens 11 to the Nth lens are divided into a first group of lens groups and a second group of lens groups, which are respectively housed in the two lens chambers of the lens barrel 10. The first group of lens groups may contain one lens, multiple lenses, or other optical components, and the second group of lens groups may contain one lens, multiple lenses, or other optical components. The optical components may include, for example, spacers, filters (e.g., infrared filters, infrared bandpass filters, or other light band filters), or light-shielding components (e.g., aperture diaphragms or diaphragms for correcting edge light).

[0033] In a first embodiment, the lens barrel 10 includes a first mirror chamber 101 and a second mirror chamber 102 arranged along the optical axis I. The inner edge surface 103 of the lens barrel 10 has an extension 104 located between the first mirror chamber 101 and the second mirror chamber 102. The extension 104 is annular and forms a light-transmitting hole 105, which connects the first mirror chamber 101 and the second mirror chamber 102. The inner diameter of the inner edge surface 1051 of the light-transmitting hole 105 is the minimum inner diameter of the inner edge surface 103 of the lens barrel 10.

[0034] Please refer to this again. Figure 2a The first lens 11 is disposed within the first mirror chamber 101 and has a first optical region 111 surrounding the optical axis I and a first non-optical region 112 surrounding the outer side of the first optical region 111. The first non-optical region 112 includes a first protrusion 110, and the first protrusion 110 is annularly disposed in the light-transmitting hole 105. For example, the first protrusion 110 is adjacent to the inner edge surface 1051 of the light-transmitting hole 105 to fix the first lens 11. Please refer to Figure 4 The first protrusion 110 includes an inner surface 1101, an outer surface 1102, and a top surface 1103 connecting the inner surface 1101 and the outer surface 1102. The outer surface 1102 of the first protrusion 110 contacts (for example, partially contacts, but not limited to) the extension 104 of the lens barrel 10. The first lens 11 is the optical lens closest to the object side of a wide-angle lens or an ultra-wide-angle lens. The angle of view of the wide-angle lens is between 100 and 120 degrees, while the angle of view of the ultra-wide-angle lens is usually greater than 120 degrees.

[0035] The lens module 1 further includes a second lens 12, disposed within the second lens chamber 102, and having a second optical region (similar to the first optical region 111) surrounding the optical axis I and a second non-optical region (similar to the first non-optical region 112) surrounding the outer side of the second optical region. An extension 104 is axially disposed between the first non-optical region 111 of the first lens 11 and the second non-optical region of the second lens 12, wherein the outer diameter of the first lens 11 is larger than the outer diameter of the second lens 12. The second lens 12 has an outer annular surface 123 that contacts the inner edge surface 103 of the lens barrel 10.

[0036] The lens module 1 further includes a third lens 13, disposed within the second lens chamber 102, and having a third optical region (similar to the first optical region 111) surrounding the optical axis I and a third non-optical region (similar to the first non-optical region 112) surrounding the outer side of the third optical region, wherein the second non-optical region of the second lens 12 is axially disposed between the extension 104 and the third non-optical region of the third lens 13. In this embodiment, the outer diameter of the third lens 13 is larger than the outer diameter of the second lens 12. In other embodiments, the outer diameter of the third lens 13 may be smaller than (or equal to) the outer diameter of the second lens 12.

[0037] The lens module 1 further includes a fourth lens 14, disposed within the second lens chamber 102, and having a fourth optical region (similar to the first optical region 111) surrounding the optical axis I and a fourth non-optical region (similar to the first non-optical region 112) surrounding the outer side of the fourth optical region, wherein the third non-optical region of the third lens 13 is axially disposed between the second non-optical region of the second lens 12 and the fourth non-optical region of the fourth lens 14. In this embodiment, the outer diameter of the fourth lens 14 is larger than the outer diameter of the third lens 13. In other embodiments, the outer diameter of the fourth lens 14 may be smaller than (or equal to) the outer diameter of the third lens 13.

[0038] The lens module 1 further includes a retaining ring 151 and a retaining ring 152. The retaining ring 151 is installed in the first lens chamber 101 after the first lens 11 is installed. The retaining ring 152 is installed in the second lens chamber 102 after the fourth lens 14 is installed.

[0039] Please refer to Figure 2a and Figure 4In this embodiment, the first protrusion 110 is fitted into the inner edge surface 1051 of the light-transmitting hole 105. The first protrusion 110 contacts (for example, partially contacts, but not limited to) the inner edge surface 1051 of the light-transmitting hole 105, and the contact surface 114 between the first protrusion 110 and the inner edge surface 1051 of the light-transmitting hole 105 is parallel to the optical axis I. When the first lens 11 is inserted into the first mirror chamber 101 along the optical axis I, since the contact surface 114 between the first protrusion 110 and the inner edge surface 1051 of the light-transmitting hole 105 is parallel to the optical axis I, the first protrusion 110 has a better assembly and tight fit effect with the light-transmitting hole 105. Please refer to... Figure 2a and Figure 5 In another embodiment, the first protrusion 110 is fitted into the inner edge surface 1051 of the light-transmitting hole 105. The first protrusion 110 contacts the inner edge surface 1051 of the light-transmitting hole 105, and the contact surface 114 between the first protrusion 110 and the inner edge surface 1051 of the light-transmitting hole 105 is inclined to the optical axis I. When the first lens 11 is placed into the first mirror chamber 101 along the optical axis I, since the contact surface 114 between the first protrusion 110 and the inner edge surface 1051 of the light-transmitting hole 105 is inclined to the optical axis I (that is, the inner diameter of the light-transmitting hole 105 decreases along the optical axis I), the first protrusion 110 has a better assembly positioning effect on the light-transmitting hole 105.

[0040] Since the first protrusion 110 of the first lens 11 is disposed in the light-transmitting hole 105 to fix the first lens 11, the outer ring surface 113 of the first lens 11 does not need to contact the inner edge surface 103 of the lens barrel 10. Subsequently, the first lens 11 can be fixed in the first lens chamber 101 by the pressure ring 151.

[0041] See Figure 6a and Figure 6bA second embodiment of the present invention provides a lens module. The lens module 2 includes a lens barrel 20 and a first lens 21 to an Nth lens (e.g., a first lens 21, a second lens 22, a third lens 23, and a fourth lens 24). The first lens 21 to the Nth lens may be made of plastic or glass. The lens barrel 20 is a one-piece lens barrel and may be made of plastic. Two chambers inside the lens barrel 20 house the first lens 21 to the Nth lens. For example, the first lens 21 to the Nth lens may be divided into a first group of lenses and a second group of lenses, each housed within one of the two chambers of the lens barrel 20. The first group of lenses may contain a single lens, multiple lenses, or other optical components, and the second group of lenses may contain a single lens, multiple lenses, or other optical components. The optical components may include spacers, filters (e.g., infrared filters, infrared bandpass filters, or other light-band filters), or light-shielding components (e.g., aperture diaphragms or diaphragms for correcting edge light).

[0042] Please see Figure 6a , Figure 6b and Figure 7 In the second embodiment, the lens barrel 20 includes a first mirror chamber 201 and a second mirror chamber 202 arranged along the optical axis I. The inner edge surface 203 of the lens barrel 20 has an extension 204 located between the first mirror chamber 201 and the second mirror chamber 202. The extension 204 is annular and defines a light-transmitting aperture 205, which connects the first mirror chamber 201 and the second mirror chamber 202. The inner diameter of the inner edge surface 2051 of the light-transmitting aperture 205 is the minimum inner diameter of the inner edge surface 203 of the lens barrel 20.

[0043] Please see again. Figure 6a and Figure 2a The first lens 21 is disposed within the first lens chamber 201 and has a first optical region 211 surrounding the optical axis I and a first non-optical region 212 surrounding the outer side of the first optical region 211. The first non-optical region 212 includes a first protrusion 210, which is annularly disposed within the light-transmitting aperture 205. For example, the first protrusion 210 is adjacent to the inner edge surface 2051 of the light-transmitting aperture 205 to fix the first lens 21. The first lens 21 is the optical lens closest to the object side of a wide-angle lens or an ultra-wide-angle lens. The angle of view of the wide-angle lens is between 100 and 120 degrees, while the angle of view of the ultra-wide-angle lens is typically greater than 120 degrees.

[0044] The lens module 2 further includes a second lens 22, disposed within the second lens chamber 202, and having a second optical region (similar to the first optical region 211) surrounding the optical axis I and a second non-optical region (similar to the first non-optical region 212) surrounding the outer side of the second optical region. An extension 204 is axially disposed between the first non-optical region 211 of the first lens 21 and the second non-optical region of the second lens 22, wherein the outer diameter of the first lens 21 is larger than the outer diameter of the second lens 22. The second non-optical region of the second lens 22 includes a second protrusion 220, which is annularly disposed within the light-transmitting aperture 205. For example, the second protrusion 220 is adjacent to the inner edge surface 2051 of the light-transmitting aperture 205 to fix the second lens 22.

[0045] The lens module 2 further includes a third lens element 23, disposed within the second lens chamber 202, and having a third optical region (similar to the first optical region 211) surrounding the optical axis I and a third non-optical region (similar to the first non-optical region 212) surrounding the outer side of the third optical region, wherein the second non-optical region of the second lens element 22 is axially disposed between the extension 204 and the third non-optical region of the third lens element 23. In a second embodiment, the outer diameter of the third lens element 23 is larger than the outer diameter of the second lens element 22. In other embodiments, the outer diameter of the third lens element 23 may be smaller than (or equal to) the outer diameter of the second lens element 22.

[0046] The lens module 2 further includes a fourth lens element 24, disposed within the second lens chamber 202, and having a fourth optical region (similar to the first optical region 211) surrounding the optical axis I and a fourth non-optical region (similar to the first non-optical region 212) surrounding the outer side of the fourth optical region, wherein the third non-optical region of the third lens element 23 is axially disposed between the second non-optical region of the second lens element 22 and the fourth non-optical region of the fourth lens element 24. In this embodiment, the outer diameter of the fourth lens element 24 is larger than the outer diameter of the third lens element 23. In other embodiments, the outer diameter of the fourth lens element 24 may be smaller than (or equal to) the outer diameter of the third lens element 23.

[0047] The lens module 2 further includes a retaining ring 251 and a retaining ring 252. The retaining ring 251 is installed in the first lens chamber 201 after the first lens 21 is installed. The retaining ring 252 is installed in the second lens chamber 202 after the fourth lens 24 is installed.

[0048] Please refer to Figure 6a and Figure 7In this embodiment, the first protrusion 210 is fitted into the inner edge surface 2051 of the light-transmitting hole 205. The first protrusion 210 contacts the inner edge surface 2051 of the light-transmitting hole 205, and the contact surface 214 between the first protrusion 210 and the inner edge surface 2051 of the light-transmitting hole 205 is inclined to the optical axis I. When the first lens 21 is inserted into the first mirror chamber 201 along the optical axis I, since the contact surface 214 between the first protrusion 210 and the inner edge surface 2051 of the light-transmitting hole 205 is inclined to the optical axis I (that is, the inner diameter of the light-transmitting hole 205 decreases along the optical axis I), the first protrusion 210 has a better assembly positioning effect on the light-transmitting hole 205. Please refer to... Figure 6a and Figure 8 In another embodiment, the first protrusion 210 is fitted into the inner edge surface 2051 of the light-transmitting hole 205. The first protrusion 210 contacts the inner edge surface 2051 of the light-transmitting hole 205, and the contact surface 214 between the first protrusion 210 and the inner edge surface 2051 of the light-transmitting hole 205 is parallel to the optical axis I. When the first lens 21 is placed into the first mirror chamber 201 along the optical axis I, since the contact surface 214 between the first protrusion 210 and the inner edge surface 2051 of the light-transmitting hole 205 is parallel to the optical axis I, the first protrusion 210 has a better assembly and tight fit effect with the light-transmitting hole 205.

[0049] Since the first protrusion 210 of the first lens 21 is disposed in the light-transmitting hole 205 to fix the first lens 21, the outer ring surface 213 of the first lens 21 does not need to contact the inner edge surface 203 of the lens barrel 20. Subsequently, the first lens 21 can be fixed in the first lens chamber 201 by the pressure ring 251.

[0050] Please see again. Figure 6a and Figure 7 In this embodiment, the second protrusion 220 is fitted into the inner edge surface 2051 of the light-transmitting hole 205. The second protrusion 220 contacts (for example, partially contacts, but not limited to) the inner edge surface 2051 of the light-transmitting hole 205, and the contact surface 224 between the second protrusion 220 and the inner edge surface 2051 of the light-transmitting hole 205 is parallel to the optical axis I. When the second lens 22 is inserted into the second mirror chamber 202 in the reverse direction along the optical axis I, since the contact surface 224 between the second protrusion 220 and the inner edge surface 2051 of the light-transmitting hole 205 is parallel to the optical axis I, the second protrusion 220 has a better assembly and tight fit effect with the light-transmitting hole 205. Please refer again. Figure 6a and Figure 8In another embodiment, the second protrusion 220 is fitted into the inner edge surface 2051 of the light-transmitting hole 205. The second protrusion 220 contacts the inner edge surface 2051 of the light-transmitting hole 205, and the contact surface 224 between the second protrusion 220 and the inner edge surface 2051 of the light-transmitting hole 205 is inclined to the optical axis I. When the second lens 22 is inserted into the second mirror chamber 202 in the reverse direction along the optical axis I, since the contact surface 224 between the second protrusion 220 and the inner edge surface 2051 of the light-transmitting hole 205 is inclined to the optical axis I (that is, the inner diameter of the light-transmitting hole 205 decreases from large to small in the reverse direction along the optical axis I), the second protrusion 220 has a better assembly positioning effect on the light-transmitting hole 205.

[0051] Since the second protrusion 220 of the second lens 22 is disposed in the light-transmitting hole 205 to fix the second lens 22, and the second lens 22, the third lens 23 and the fourth lens 24 can be fixed in the second lens chamber 202 by the pressure ring 252, the outer ring surface 223 of the second lens 22 does not need to contact the inner edge surface 203 of the lens barrel 20. In the optical lens group, the second lens 22 has high optical sensitivity and is easily affected by deformation during the assembly process. The design that the second lens 22 does not contact the inner edge surface 203 of the lens barrel 20 can improve the deformation problem caused by the second lens 22 being assembled into the lens barrel 20.

[0052] In summary, according to the lens module disclosed in this invention, by utilizing the first convex portion of the first lens element disposed in the light-transmitting aperture, the outer annular surface of the first lens element does not need to contact the inner edge surface of the lens barrel, thereby solving the problem of distortion in the optically effective area of ​​the first lens element of a wide-angle or ultra-wide-angle lens. Furthermore, according to the lens module disclosed in this invention, by utilizing the second convex portion of the second lens element disposed in the light-transmitting aperture, the outer annular surface of the second lens element does not need to contact the inner edge surface of the lens barrel, which can improve the distortion problem caused by the second lens element being assembled into the lens barrel.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lens module characterized by comprising: include: A lens barrel includes a first mirror chamber and a second mirror chamber arranged along an optical axis, wherein an extension is provided on an inner edge surface of the lens barrel, the extension is located between the first mirror chamber and the second mirror chamber, and the extension forms a light-transmitting hole that connects the first mirror chamber and the second mirror chamber. A first lens is disposed within the first mirror chamber and has a first optical region surrounding the optical axis and a first non-optical region surrounding the outer side of the first optical region, wherein the first non-optical region includes a first protrusion disposed in the light-transmitting aperture; and A second lens is disposed in the second mirror chamber and has a second optical region surrounding the optical axis and a second non-optical region surrounding the outer side of the second optical region; The outer diameter of the first lens is larger than that of the second lens, and the first lens is the optical lens closest to the object side of a wide-angle lens or an ultra-wide-angle lens; The first protrusion is adjacent to an inner edge surface of the light-transmitting hole to fix the first lens, so that the outer ring surface of the first lens of the wide-angle lens or the ultra-wide-angle lens does not contact the inner edge surface of the lens barrel. The first protrusion is located between the first mirror chamber and the second mirror chamber, adjacent to the inner edge of the light-transmitting hole, so that the outer ring surface of the first lens disposed in the first mirror chamber does not contact the inner edge surface of the lens barrel.

2. The lens module according to claim 1, wherein The first protrusion includes an inner side surface, an outer side surface, and a top surface connecting the inner side surface and the outer side surface. The outer side surface of the first protrusion contacts the extension of the lens barrel.

3. The lens module according to claim 1, wherein The extension is axially disposed between the first non-optical area of ​​the first lens and the second non-optical area of ​​the second lens.

4. The lens module according to claim 3, wherein The second lens has an outer circumferential surface that contacts the inner edge surface of the lens barrel.

5. The lens module according to claim 3, wherein The second lens has an outer ring surface that does not contact the inner edge surface of the lens barrel, and the second non-optical area includes a second protrusion, which is disposed in the light-transmitting hole.

6. The lens module as described in claim 1, characterized in that, The inner diameter of one inner edge surface of the light aperture is the minimum inner diameter of that inner edge surface of the lens barrel.

7. The lens module as described in claim 1, characterized in that, The first protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the first protrusion and the inner edge surface of the light-transmitting hole is parallel to the optical axis.

8. The lens module as described in claim 1, characterized in that, The first protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the first protrusion and the inner edge surface of the light-transmitting hole is inclined to the optical axis.

9. The lens module as described in claim 5, characterized in that, The second protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the second protrusion and the inner edge surface of the light-transmitting hole is parallel to the optical axis.

10. The lens module as described in claim 5, characterized in that, The second protrusion contacts the inner edge surface of the light-transmitting hole, and the contact surface between the second protrusion and the inner edge surface of the light-transmitting hole is inclined to the optical axis.

11. The lens module as described in claim 5, characterized in that, Both the first protrusion and the second protrusion are annular.

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