Lens components, lens modules and electronic equipment

Abstract

The present application discloses a lens assembly, a lens module and an electronic device. The lens assembly comprises: a lens barrel with an inner cavity, the object side end of the lens barrel having a window connected to the inner cavity; a first lens, part of which is arranged in the inner cavity of the lens barrel and abuts against the inner wall of the lens barrel, and at least part of the object side of the first lens protrudes out of the window of the lens barrel; and a second lens, which is connected and fixed to the object side of the first lens. The lens assembly is formed into an L1 lens by combining the first lens and the second lens to achieve the purpose of a small head of the lens assembly. Compared with the whole L1 lens, the thickness of the first lens is reduced. When making the first lens, the adverse effect of the ejection structure on the demolding of the first lens can be avoided, so that the eccentricity value of the first lens is smaller and more stable, the thickness of the first lens is uniform, the plastic shrinkage ratio of the first lens is reduced, and the shape of the aspheric surface of the molded first lens is closer to the design value.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a lens assembly, a lens module and an electronic device. Background Art

[0002] In recent years, full screen has become the basic configuration of mobile phones and tablets, and camera technology is also constantly innovating and breaking through. At present, small head cameras usually expose part of the L1 lens (the first lens close to the object) outside the lens barrel and add blackening treatment to prevent light from entering its surface.

[0003] In the process of realizing the present application, the inventors found that there are at least the following problems in the prior art: the thickness of the L1 lens is relatively thick, and a pin structure needs to be added to the lens manufacturing mold to eject the lens from the mold through the pin structure. Since the pin structure has errors during the ejection and resetting process, the eccentricity of the L1 lens is poor; in addition, the uneven thickness of the L1 lens will lead to different plastic shrinkage ratios, resulting in large differences in the shape and design value of the aspheric surface of the L1 lens, which seriously affects the imaging quality and assembly yield of the camera. Summary of the invention

[0004] In view of the above, it is necessary to propose a lens assembly, a lens module and an electronic device to solve the above problems.

[0005] An embodiment of the present application provides a lens assembly, comprising:

[0006] A lens barrel, the lens barrel having an inner cavity, and a window communicating with the inner cavity and located at an object side end of the lens barrel;

[0007] a first lens, wherein a portion of the first lens is disposed in the inner cavity of the lens barrel and abuts against the inner wall of the lens barrel, and at least a portion of the object side surface of the first lens protrudes out of the window of the lens barrel; and

[0008] The second lens is connected and fixed to the object side of the first lens.

[0009] The above-mentioned lens assembly realizes the purpose of a small head of the lens assembly by combining the first lens and the second lens into an L1 lens. Compared with the whole L1 lens, the thickness of the first lens is reduced. When making the first lens, there is no need to design an ejection structure to demold the first lens. The first lens can be directly ejected from the mold through the material rod, thereby avoiding the adverse effect of the ejection structure on the demolding of the first lens, so that the eccentricity value of the first lens is smaller and more stable, the thickness of the first lens is uniform, the plastic shrinkage ratio of the first lens is reduced, and the shape of the aspheric surface of the molded first lens is closer to the design value, which is beneficial to improving the imaging quality and assembly yield of the lens assembly.

[0010] In some embodiments, the lens assembly satisfies the following relationship:

[0011] 0.8mm≤A1≤4mm,

[0012] Wherein, A1 is the outer diameter of the object side of the second lens.

[0013] In this way, by satisfying the range of the outer diameter value of the object side of the second lens, the outer diameter value of the object side of the second lens is limited, which is conducive to opening a hole in the screen of an electronic device with the lens assembly, and the size of the hole can meet the requirements of the electronic device for full-screen design.

[0014] In some embodiments, the lens assembly further satisfies the following relationship:

[0015] 0.6≤A1 / A2≤0.8,

[0016] Wherein, A2 is the maximum outer diameter of the first lens.

[0017] In this way, the value of A2 is synchronously determined by A1 to limit the maximum outer diameter of the first lens, that is, the outer diameter of the L1 lens is limited, so that it is beneficial to open a hole in the screen of an electronic device with the lens assembly while meeting the function of the L1 lens, and the size of the hole can meet the requirements of the electronic device for full-screen design.

[0018] In some embodiments, the lens assembly further satisfies the following relationship:

[0019] 0.2mm≤A3-A2≤0.6mm,

[0020] Wherein, A3 is the minimum outer diameter value of the outer wall of the lens barrel.

[0021] In this way, the value of A3 is synchronously determined by A2, and the minimum value of the outer wall of the lens barrel is limited. A1, A2 and A3 are interrelated, which is conducive to opening a hole in the screen of an electronic device with the lens assembly. The size of the hole can meet the requirements of the electronic device for full-screen design.

[0022] In some embodiments, the lens assembly further satisfies the following relationship:

[0023] 0.2mm≤A4+A5≤1.5mm,

[0024] Among them, A4 is the center thickness value of the portion of the first lens object side protruding from the lens barrel window, and A5 is the center thickness value of the second lens.

[0025] In this way, by satisfying the sum of the center thickness value of the part of the first lens protruding from the lens barrel window on the object side and the center thickness value of the second lens, the center thickness of the L1 lens protruding from the lens barrel is limited, so that the lens assembly has the characteristics of a small head, and at the same time, the depth of the first lens and the second lens in the mold cavity is reduced, which is beneficial to the demolding of the first lens and the second lens.

[0026] In some embodiments, the lens assembly further satisfies the following relationship:

[0027] 0.5≤(A4+A5) / (A5+A6)≤0.8,

[0028] Wherein, A6 is the center thickness value of the first lens.

[0029] In this way, the value of A5+A6 is simultaneously determined by A4+A5, the center thickness of the L1 lens is limited, and the depth of the first lens and the second lens in the mold cavity is reduced, which is beneficial to demolding the first lens and the second lens.

[0030] In some embodiments, the lens assembly further satisfies the following relationship:

[0031] 0.3≤A5 / (A5+A6)≤0.7.

[0032] In this way, the value of A5 is simultaneously determined by A5+A6, and the center thickness value of the second lens is limited. A4, A5 and A6 are interrelated, and the depth of the first lens and the second lens in the mold cavity is reduced, which is beneficial to the demolding of the first lens and the second lens. When the first lens is demolded, no ejection structure is required, which avoids the adverse effect of the ejection structure on the first lens, and makes the eccentricity value of the first lens smaller and more stable.

[0033] In some embodiments, further comprising:

[0034] A connecting piece connects and fixes the first lens and the second lens.

[0035] In this way, the first lens and the second lens are connected by the connecting piece, ensuring that the L1 lens can be tightly connected.

[0036] The embodiment of the present application further provides a lens module, comprising:

[0037] A lens assembly as described above.

[0038] The above-mentioned lens module achieves the purpose of a small head of the lens module by combining the first lens and the second lens into an L1 lens. Compared with the whole L1 lens, the thickness of the first lens is reduced. When making the first lens, there is no need to design an ejection structure to demold the first lens. The first lens can be directly ejected from the mold through the material rod, thereby avoiding the adverse effect of the ejection structure on the demolding of the first lens, so that the eccentricity value of the first lens is smaller and more stable, the thickness of the first lens is uniform, the plastic shrinkage ratio of the first lens is reduced, and the shape of the aspheric surface of the molded first lens is closer to the design value, which can reduce the size and weight of the lens module, save costs, and is beneficial to improving the imaging quality and assembly yield of the lens module.

[0039] An embodiment of the present application further provides an electronic device, including:

[0040] case;

[0041] The lens module as described above is arranged in the shell.

[0042] The above-mentioned electronic device combines the first lens and the second lens into an L1 lens to achieve the purpose of a small head of the lens module. Compared with the whole L1 lens, the thickness of the first lens is reduced. When making the first lens, there is no need to design an ejection structure to demold the first lens. The first lens can be directly ejected from the mold through the material rod, thereby avoiding the adverse effect of the ejection structure on the demolding of the first lens, so that the eccentricity value of the first lens is smaller and more stable, the thickness of the first lens is uniform, the plastic shrinkage ratio of the first lens is reduced, and the shape of the aspheric surface of the molded first lens is closer to the design value, which can reduce the size and weight of the electronic device, save costs, increase the screen-to-body ratio of the electronic device, and is beneficial to improving the imaging quality and assembly yield of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the lens assembly provided in the first embodiment of the present application.

[0044] Figure 2 It is a schematic diagram of the dimension marking of the lens assembly provided in the first embodiment of the present application.

[0045] Figure 3 It is a structural schematic diagram of a lens assembly provided in the second embodiment of the present application.

[0046] Figure 4 It is a schematic diagram of the structure of an electronic device provided in the third embodiment of the present application.

[0047] Main component symbols

[0048] Electronic equipment 1000

[0049] Lens module 100

[0050] Lens assembly 10, 110

[0051] Lens tube 12, 112

[0052] Lumen 122

[0053] Window 124, 1124

[0054] First lens 14, 114

[0055] Second lens 16, 116

[0056] Connector 18, 118

[0057] Housing 20 DETAILED DESCRIPTION

[0058] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The practical term "and / or" herein includes any and all combinations of one or more related listed items.

[0063] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0064] See also Figure 1 A first embodiment of the present application provides a lens assembly 10 , which includes at least a lens barrel 12 , a first lens 14 , and a second lens 16 .

[0065] The lens barrel 12 has an inner cavity 122 and a window 124 connected to the inner cavity 122 and located at the object side end of the lens barrel 12; a portion of the first lens 14 is disposed in the inner cavity of the lens barrel 12 and abuts against the inner wall of the lens barrel 12, and the entire object side surface of the first lens 14 protrudes out of the window 124 of the lens barrel 12; the second lens 16 is connected and fixed to the object side surface of the first lens 14.

[0066] The lens assembly 10 is formed into an L1 lens by combining the first lens 14 and the second lens 16 to achieve the purpose of a small head of the lens assembly 10. Compared with the whole L1 lens, the thickness of the first lens 14 is reduced. When manufacturing the first lens 14, there is no need to design an ejection structure to demold the first lens 14. The first lens 14 can be directly ejected from the mold by a material rod, thereby avoiding the adverse effect of the ejection structure on the first lens 14 during demolding, so that the eccentricity value of the first lens 14 is smaller and more stable, the thickness of the first lens 14 is uniform, and the plastic shrinkage ratio of the first lens 14 is reduced. The shape of the aspheric surface of the molded first lens 14 is closer to the design value. Since the shape of the first lens 14 is closer to the design value, the assembly yield of the lens assembly 10 can be improved during assembly; based on the assembly yield of the lens assembly 10 and the quality of the first lens 14, the imaging quality of the lens assembly 10 can also be improved.

[0067] It should be noted that the object side end of the lens barrel 12 refers to the end close to the object when the lens captures an image.

[0068] The first lens 14 has an object side and an image side, the object side of the first lens 14 is convex or concave, and the image side of the first lens 14 is convex or concave; the second lens 16 has an object side and an image side, the object side of the second lens 16 is convex or concave, and the image side of the second lens 16 is concave, the image side of the second lens 16 is connected to the object side of the first lens 14, and the image side of the second lens 16 cooperates with the object side of the first lens 14. The second lens 16 is connected and fixed to the first lens 14, and together they form the L1 lens of the lens assembly 10.

[0069] The first lens 14 and the second lens 16 together form the L1 lens of the lens assembly 10. The L1 lens is the first lens close to the object and usually has a positive refractive power. When the lens module is taking an image, the light first enters the L1 lens, that is, when the lens module is used for imaging, the light emitted or reflected by the object passes through the second lens 16 and the first lens 14 in sequence from the object side of the lens assembly 10, and is finally used for imaging.

[0070] See also Figure 2 In some embodiments, the lens assembly 10 satisfies the following relationship:

[0071] 0.8mm≤A1≤4mm,

[0072] Wherein, A1 is the outer diameter of the object side surface of the second lens 16, and the value of A1 can be 1.42 mm, 1.50 mm, 1.59 mm or 1.83 mm.

[0073] When the above relationship is satisfied, the outer diameter value of the object side of the second lens 16 can be limited. Limiting the outer diameter value of the object side of the second lens 16 is conducive to opening a hole in the screen of the electronic device having the lens assembly 10, and the size of the hole can meet the requirements of the electronic device having the lens assembly 10 for full-screen design. However, when A1 is less than 0.8 mm, the outer diameter value of the object side of the second lens 16 is too small, so that the diameter of the lens assembly 10 is too small, which is not conducive to opening a hole in the screen of the electronic device having the lens assembly 10, and increases the difficulty of opening the screen hole; when A1 is greater than 4 mm, the outer diameter value of the object side of the second lens 16 is too large, so that the diameter of the lens assembly 10 is too large, and the opening of the screen of the electronic device is too large, which is not conducive to meeting the requirements of the full-screen design of the electronic device having the lens assembly 10.

[0074] Please continue to see Figure 2 In some embodiments, the lens assembly 10 also satisfies the following relationship:

[0075] 0.6≤A1 / A2≤0.8,

[0076] A2 is the maximum outer diameter of the first lens 14 , and the value range of A2 is approximately 1 mm≤A2≤6.67 mm. The value of A2 can be 3.0 mm, 3.3 mm, 3.4 mm or 3.6 mm.

[0077] The above relationship is satisfied, and the value of A2 is determined synchronously by A1, that is, the maximum outer diameter value of the first lens 14 is limited, and the outer diameter of the L1 lens is also limited, so that it is conducive to opening a hole in the screen of the electronic device having the lens assembly 10 under the premise of meeting the function of the L1 lens, and the size of the hole can meet the requirements of the electronic device for the full-screen design. However, when A2 is less than 1mm, the maximum outer diameter value of the first lens 14 is too small, and accordingly, the outer diameter value of the object side of the second lens 16 is also correspondingly small, so that the diameter of the lens assembly 10 is too small, which is not conducive to opening a hole in the screen of the electronic device, and increases the difficulty of opening the screen hole; when A2 is greater than 6.67mm, the maximum outer diameter value of the first lens 14 is too large, and accordingly, the outer diameter value of the object side of the second lens 16 is also correspondingly large, so that the diameter of the lens assembly 10 is too large, and the screen opening of the electronic device is too large, which is not conducive to meeting the requirements of the full-screen design of the electronic device having the lens assembly 10, and at the same time, the volume and weight of the lens assembly 10 will be increased, which is not conducive to meeting the design requirements of the miniaturization of the lens assembly 10.

[0078] Please continue to see Figure 2 In some embodiments, the lens assembly 10 also satisfies the following relationship:

[0079] 0.2mm≤A3-A2≤0.6mm,

[0080] Among them, A3 is the minimum outer diameter value of the outer wall of the lens barrel 12, and the value range of A3 is approximately 1.2mm≤A3≤7.27mm. The value of A3 can be 3.6mm, 3.75mm, 3.85mm, 3.9mm, 4.0mm or 4.17mm.

[0081] The above relationship is satisfied, and the value of A3 is determined synchronously by A2, that is, the minimum outer diameter value of the outer wall of the lens barrel 12 is limited, and A1, A2 and A3 are interrelated, which is conducive to opening a hole in the screen of the electronic device having the lens assembly 10, and the size of the hole can meet the requirements of the electronic device for the full-screen design. However, when A3 is less than 1.2mm, the minimum outer diameter value of the outer wall of the lens barrel 12 is too small, which is not conducive to assembling the first lens 14 and the second lens 16, and increases the difficulty of assembling the lens assembly 10; when A3 is greater than 7.27mm, the minimum outer diameter value of the outer wall of the lens barrel 12 is too large, which is not conducive to reducing the outer size and weight of the lens barrel 12, and accordingly, the maximum outer diameter value of the first lens 14 and the outer diameter value of the object side of the second lens 16 will also be too large, so that the caliber of the lens assembly 10 is too large, and the screen opening of the electronic device is too large, which is not conducive to meeting the requirements of the full-screen design of the electronic device having the lens assembly 10, and at the same time, the volume and weight of the lens assembly 10 will be increased.

[0082] Please continue to see Figure 2 In some embodiments, the lens assembly 10 also satisfies the following relationship:

[0083] 0.2mm≤A4+A5≤1.5mm,

[0084] A4 is the total center thickness value of the first lens 14 protruding from the window 124 of the lens barrel 12 on the object side, and A5 is the center thickness value of the second lens 16 .

[0085] The above relationship is satisfied, by limiting the sum of all the center thickness values ​​of the window 124 protruding from the lens barrel 12 on the object side of the first lens 14 and the center thickness values ​​of the second lens 16, that is, limiting the center thickness of the L1 lens protruding from the lens barrel 12, the lens assembly 10 has the feature of a small head, and at the same time reduces the depth of the first lens 14 and the second lens 16 in the mold cavity, which is beneficial to the demolding of the first lens 14 and the second lens 16. However, when A4+A5 is less than 0.2mm, the center thickness of the window 124 of the L1 lens protruding from the lens barrel 12 is too small, that is, the mirror surface of the L1 lens exposed outside the lens barrel 12 is too small, and the meaning of partially exposing the lens module outside the lens barrel 12 is lost. The electronic device with the lens assembly 10 no longer has the feature of a small head; when A4+A5 is greater than 1.5mm, the center thickness of the window 124 of the L1 lens protruding from the lens barrel 12 is too large, and accordingly, the depth of the first lens 14 and the second lens 16 in the mold cavity is deeper, which is not conducive to the demolding of the first lens 14 and the second lens 16, and increases the difficulty of demolding the first lens 14 and the second lens 16.

[0086] It should be noted that the center thickness refers to the thickness of the portion of the lens that is coaxial with the optical axis.

[0087] Please continue to see Figure 2 In some embodiments, the lens assembly 10 also satisfies the following relationship:

[0088] 0.5≤(A4+A5) / (A5+A6)≤0.8,

[0089] Wherein, A6 is the center thickness value of the first lens 14, and the value range of A5+A6 is approximately 0.25mm≤A5+A6≤3mm.

[0090] The above relationship is satisfied, and the value of A5+A6 is determined synchronously by A4+A5, that is, the center thickness of the L1 lens is limited, so that the L1 lens satisfies the function of the first lens of the lens module, and at the same time reduces the depth of the first lens 14 and the second lens 16 in the mold cavity, which is conducive to the demolding of the first lens 14 and the second lens 16. However, when A5+A6 is less than 0.25mm, the center thickness of the L1 lens is too small, and after being split into the first lens 14 and the second lens 16, the first lens 14 and the second lens 16 are difficult to mold; when A5+A6 is greater than 3mm, the center thickness of the L1 lens is too large, and accordingly, the depth of the first lens 14 and the second lens 16 in the mold cavity is deeper, which is not conducive to the demolding of the first lens 14 and the second lens 16, and increases the demolding difficulty of the first lens 14 and the second lens 16.

[0091] Please continue to see Figure 2 In some embodiments, the lens assembly 10 also satisfies the following relationship:

[0092] 0.3 ≤ A5 / (A5 + A6) ≤ 0.7,

[0093] The value range of A4 is approximately 0 < A4 ≤ 0.3 mm, and the value of A4 can be 0.1 mm, 0.15 mm, 0.2 mm or 0.3 mm; the value range of A5 is approximately 0.05 mm ≤ A5 ≤ 1.5 mm, and the value of A5 can be 0.35 mm, 0.55 mm, 0.6 mm, 0.65 mm or 0.66 mm; the value range of A6 is approximately 0.2 mm ≤ A6 ≤ 1.5 mm, and the value of A6 can be 0.6 mm, 0.65 mm, 0.7 mm, 0.8 mm or 0.83 mm.

[0094] Satisfying the above relational expression, the value of A5 is further determined synchronously by A5 + A6, further limiting the central thickness value of the second lens 16. A4, A5 and A6 are interrelated, which is beneficial to the demolding of the first lens 14 and the second lens 16. When the first lens 14 is demolded, no ejection structure is required, avoiding the adverse effects of the ejection structure on the first lens, making the eccentricity value of the first lens 14 smaller and more stable, reducing the plastic shrinkage ratio of the first lens 14, and making the aspherical shape of the molded first lens 14 closer to the design value. However, when A5 is less than 0.075 mm and / or A6 is less than 0.2 mm, the central thickness values of the first lens 14 and the second lens 16 are too small and molding is difficult; when A5 is greater than 1.5 mm and / or A6 is greater than 1.5 mm, the central thickness values of the first lens 14 and the second lens 16 are too large, and the depths of the first lens 14 and the second lens 16 in the mold cavity are deeper, which is not conducive to the demolding of the first lens 14 and the second lens 16, increasing the demolding difficulty of the first lens 14 and the second lens 16.

[0095] Please continue to refer to Figure 1 , in some embodiments, the lens assembly 10 further includes a connecting member 18, and the connecting member 18 connects and fixes the first lens 14 and the second lens 16. In this embodiment, the connecting member 18 is an optical adhesive, and the first lens 14 and the second lens 16 are bonded by the optical adhesive to achieve the purpose of forming the L1 lens.

[0096] By dividing the L1 lens structure into the first lens 14 and the second lens 16 and bonding them with an optical adhesive, the above-mentioned lens assembly 10 ensures a tight connection of the L1 lens structure.

[0097] It can be understood that in other embodiments, the optical adhesive can be silicone rubber, acrylic resin and unsaturated polyester, polyurethane or epoxy resin.

[0098] Please refer to Figure 3The structure of the lens assembly 110 provided in the second embodiment of the present application is substantially the same as that of the lens assembly 10 provided in the first embodiment, except that: in this embodiment, a portion of the object side surface of the first lens 114 protrudes out of the window 1124 of the lens barrel 112, and the second lens 116 is connected to the object side surface of the first lens 114 via a connector 118.

[0099] The thickness of the first lens 114 in the lens assembly 110 is reduced. When manufacturing the first lens 114, there is no need to design an ejection structure to demold the first lens 114. The first lens 114 can be directly ejected from the mold by a material rod, thereby avoiding the adverse effect of the ejection structure on the demolding of the first lens 114, so that the eccentricity value of the first lens 114 is smaller and more stable, the thickness of the first lens 114 is uniform, the plastic shrinkage ratio of the first lens 114 is reduced, and the shape of the aspheric surface of the molded first lens 114 is closer to the design value, which is beneficial to improving the imaging quality and assembly yield of the lens assembly 110.

[0100] See also Figure 4 The third embodiment of the present application provides an electronic device 1000 , which includes at least a housing 30 and a lens module 100 , wherein the lens module 100 is disposed in the housing 30 .

[0101] The lens module 100 at least includes any one of the lens components in the first embodiment or the second embodiment. This embodiment is described by taking the lens component 10 in the first embodiment as an example.

[0102] The above-mentioned electronic device 1000 forms an L1 lens together with the first lens 14 and the second lens 16 to achieve the purpose of a small head of the lens module 100. Compared with the whole L1 lens, the thickness of the first lens 14 is reduced. When making the first lens 14, there is no need to design an ejection structure to demold the first lens 14. The first lens 14 can be directly withdrawn from the mold through the material rod, thereby avoiding the adverse effect of the ejection structure on the demolding of the first lens 14, so that the eccentricity value of the first lens 14 is smaller and more stable, the thickness of the first lens 14 is uniform, the plastic shrinkage ratio of the first lens 14 is reduced, and the shape of the aspheric surface of the molded first lens 14 is closer to the design value, which is beneficial to reducing the size and weight of the electronic device 1000, saving costs, increasing the screen-to-body ratio of the electronic device 1000, and improving the imaging quality and assembly yield of the electronic device.

[0103] It is understandable that the structure of the above-mentioned electronic device 1000 does not constitute a limitation on the electronic device of this embodiment. The electronic device may include more or fewer components than the above-mentioned, or combine some components, or separate some components, or arrange the components differently.

[0104] The electronic device 1000 in this embodiment is a mobile phone, and the lens module 100 is the front camera of the electronic device 1000 .

[0105] It can be understood that in other embodiments, the electronic device 1000 can also be a tablet computer, a laptop computer, etc., and the lens module 100 is its corresponding front camera.

[0106] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A lens assembly, characterized in that: include: A lens barrel, the lens barrel having an inner cavity, and a window communicating with the inner cavity and located at an object side end of the lens barrel; a first lens, wherein a portion of the first lens is disposed in the inner cavity of the lens barrel and abuts against the inner wall of the lens barrel, at least a portion of the object side surface of the first lens protrudes out of the window of the lens barrel, the first lens has a single lens, and the object side surface of the first lens is a convex surface; and The second lens is connected and fixed to the object side of the first lens. The second lens has a single lens. The image side of the second lens is a concave surface. The image side of the second lens cooperates with the object side of the first lens. The first lens and the second lens together constitute the L1 lens of the lens assembly. The L1 lens is the first lens close to the object.

2. The lens assembly according to claim 1, wherein: The lens assembly satisfies the following relationship: 0.8mm≤A1≤4mm, Wherein, A1 is the outer diameter of the object side of the second lens.

3. The lens assembly according to claim 2, characterized in that: The lens assembly also satisfies the following relationship: 0.6≤A1 / A2≤0.8, Wherein, A2 is the maximum outer diameter of the first lens.

4. The lens assembly according to claim 3, characterized in that: The lens assembly also satisfies the following relationship: 0.2mm≤A3-A2≤0.6mm, Wherein, A3 is the minimum outer diameter value of the outer wall of the lens barrel.

5. The lens assembly according to claim 1, wherein: The lens assembly also satisfies the following relationship: 0.2mm≤A4+A5≤1.5mm, Among them, A4 is the center thickness value of the portion of the first lens object side protruding from the lens barrel window, and A5 is the center thickness value of the second lens.

6. The lens assembly according to claim 5, characterized in that: The lens assembly also satisfies the following relationship: 0.5≤(A4+A5) / (A5+A6)≤0.8, Wherein, A6 is the center thickness value of the first lens.

7. The lens assembly according to claim 6, wherein: The lens assembly also satisfies the following relationship: 0.3≤A5 / (A5+A6)≤0.

7.

8. The lens assembly according to claim 1, wherein: Further including: A connecting piece connects and fixes the first lens and the second lens.

9. A lens module, characterized in that: include: A lens assembly as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: include: case; The lens module as described in claim 9 is arranged in the housing.

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