Camera lens

Abstract

The invention relates to a pick-up lens, which comprises a lens barrel, and a lens group and a bearing piece group accommodated in the lens barrel, the lens group comprises first to fifth lenses which are sequentially arranged from object to image along an optical axis, the focal powers of the first four lenses are distributed according to positive-negative-positive-negative distribution, the object side of the first lens is in contact with the inner wall of the lens barrel, and the refractive index of the first lens is maximum; the bearing piece set comprises four distance pieces located between every two adjacent lenses, the outer side of the lens barrel is provided with an inclined face, and the diameters of the first lens to the fifth lens are gradually increased. The distance EP01 between the object side of the lens barrel and the object side of the first bearing piece in the optical axis direction, the spacing distance EP12 between the first bearing piece and the second bearing piece in the optical axis direction, the center thickness CT1-CT3 of the first lens, the second lens and the third lens and the refractive index N1 of the first lens meet the requirement of 2.15 lt. EP01 / CT1 * N1lt; 2.90, 1.85 lt, 2.90, 1.85 lt; l / (CT1 + CT2 + CT3) lt; 2.30, 1.35 lt, 2.30, 1.35 lt; eP01 / EP12lt, EP01 / And 2.05.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and in particular to a camera lens. Background Art

[0002] With the continuous development of the AR industry in recent years, related consumer electronic products have shown an increasingly diversified development trend; as an important original component of AR terminal products, camera lenses mainly play the role of image capture and recognition, spatial positioning and tracking, and three-dimensional construction. With the iteration and functional upgrade of terminal products, the demand for the main features of imaging lenses such as resolution level, field of view, reliability and stability, and thin size has gradually increased, and the application scenarios have become more diverse; therefore, camera lenses also need to meet the requirements of use in different environments. Among them, the impact of temperature on lens performance is very significant, that is, the problem of lens temperature drift. In order to solve the problem of lens temperature drift, a common practice is to add a glass lens to the camera lens. However, the sensitivity of the glass lens is relatively large. When the lens is assembled, the micro-interference state of the fit will cause the lens to bear friction and radial pressure. If the connection strength between the glass lens and the lens barrel is insufficient, it is easy to cause the lens assembly to tilt, resulting in a decrease in the yield of lens production. Summary of the invention

[0003] Since the existing camera lenses use glass lenses to solve the lens temperature drift problem, which may have adverse effects on the assembly and performance of the lens, it is necessary to provide a camera lens.

[0004] A camera lens comprises a lens barrel, and a lens group and a supporting member group contained in the lens barrel, wherein the lens group comprises: a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with negative optical power, and a fifth lens with optical power, which are arranged in sequence from the object side to the image side along the optical axis, and a non-effective diameter area on the object side surface of the first lens contacts the inner wall of the lens barrel; The refractive index of the first lens is greater than the refractive index of the other lenses; The supporting member group comprises: a first supporting member disposed on the image side of the first lens and in contact with the image side of the first lens, a second supporting member disposed on the image side of the second lens and in contact with the image side surface of the second lens, a third supporting member disposed on the image side of the third lens and in contact with the image side surface of the third lens, a fourth supporting member disposed on the image side of the fourth lens and in contact with the image side surface of the fourth lens, The outer side of the lens barrel has an inclined surface, and the diameters of the first lens to the fifth lens increase in sequence; In particular, the camera lens also satisfies: 2.15 < EP01 / CT1 × N1 < 2.90; 1.85 < L / (CT1 + CT2 + CT3) < 2.30; and 1.35 < EP01 / EP12 < 2.05; wherein, EP01 is the distance from the object side of the lens barrel to the object side of the first bearing member along the optical axis direction, CT1 is the central thickness of the first lens, N1 is the refractive index of the first lens, L is the maximum height of the lens barrel, CT2 is the central thickness of the second lens, CT3 is the central thickness of the third lens, and EP12 is the distance between the first bearing member and the second bearing member along the optical axis direction.

[0005] In some embodiments of the present application, the inner diameter of the image side of the lens barrel is greater than the inner diameter of the object side of the lens barrel and is integrally formed. The lens barrel satisfies: 4.65 mm < d0m / tan(Semi - FOV) < 5.00 mm, where d0m is the inner diameter of the image side of the lens barrel, and Semi - FOV is half of the maximum field of view angle of the camera lens.

[0006] In some embodiments of the present application, the following relationship is satisfied among the inner diameter d4s of the object side of the fourth bearing member, the inner diameter d3s of the object side of the third bearing member, the maximum thickness CP3 of the third bearing member along the optical axis direction, and the maximum thickness CP4 of the fourth bearing member along the optical axis direction: 25.65 mm -1 < d4s / d3s / (CP3 + CP4) < 31.50 mm -1 .

[0007] In some embodiments of the present application, the following relationship is satisfied among the central thickness CT4 of the fourth lens, the central thickness CT5 of the fifth lens, and the distance EP34 between the third bearing member and the fourth bearing member along the optical axis direction: 1.00 < (CT4 + CT5) / EP34 < 2.75.

[0008] In some embodiments of the present application, the following relationships are satisfied among the distance EP12 between the first bearing member and the second bearing member along the optical axis direction, the central thickness CT2 of the second lens, the refractive index N2 of the second lens, the distance EP23 between the second bearing member and the third bearing member along the optical axis direction, the central thickness CT3 of the third lens, and the refractive index N3 of the third lens: 2.25 < EP12 / CT2 × N2 < 3.40; 0.90 < EP23 / CT3 × N3 < 1.20.

[0009] In some embodiments of the present application, the effective focal length f1 of the first lens, the effective focal length f3 of the third lens, the inner diameter d3s of the object side surface of the third supporting member, and the inner diameter d1s of the object side surface of the first supporting member satisfy the following relationship: 0.45 <f1 / f3 / (d3s / d1s)<1.20。

[0010] In some embodiments of the present application, the spacing distance EP23 between the second supporting member and the third supporting member along the optical axis, the center thickness CT3 of the third lens, and the distance SG32 along the optical axis from the intersection of the image side surface of the third lens and the optical axis to the contact surface between the object side surface of the third supporting member and the non-effective area of ​​the image side surface of the third lens meet the following conditions: 2.90<(EP23+CT3) / SG32<4.20.

[0011] In some embodiments of the present application, the outer diameter OD1 of the first lens and the object side minimum aperture d0smin of the lens barrel satisfy the following relationship: 1.90 <OD1 / d0smin<2.30。

[0012] In some embodiments of the present application, the image side surface of the fifth lens has at least one inflection point, and the image side surface inner diameter d0m of the lens barrel, the object side minimum aperture d0smin of the lens barrel, the outer diameter OD5 of the fifth lens, and the outer diameter OD1 of the first lens satisfy the following conditions: 1.75<(d0m-d0smin) / (OD5-OD1)≤2.20.

[0013] In some embodiments of the present application, the combined focal length f12 of the first lens and the second lens, the combined focal length f45 of the fourth lens and the fifth lens, the spacing distance EP12 between the first supporting member and the second supporting member along the optical axis, the spacing distance EP23 between the second supporting member and the third supporting member along the optical axis, the spacing distance EP34 between the third supporting member and the fourth supporting member along the optical axis, and the maximum distance EP45 from the image side surface of the fourth supporting member to the image side surface non-effective diameter area of ​​the fifth lens along the optical axis satisfy: -1.30 <f12 / f45<-0.45; 0.85≤(EP12+EP23) / (EP34+EP45)≤1.40.

[0014] In some embodiments of the present application, the object side surface of the first lens is convex, the image side surface of the second lens is concave, the combined focal length f12 of the first lens and the second lens, the refractive index N1 of the first lens, the refractive index N2 of the second lens, the distance EP01 along the optical axis from the object side surface of the lens barrel to the object side surface of the first bearing member, and the maximum thickness CP1 of the first bearing member along the optical axis satisfy: 1.05mm < f12 / (N1 + N2) < 1.2mm; 2.95 < EP01 / (CP1 + CT2) ≤ 5.15.

[0015] In some embodiments of the present application, the object side surface of the third lens is concave and the image side surface is convex, and the object side surface of the fifth lens is convex and the image side surface is concave.

[0016] In summary, the camera lens provided by the present application adopts a five-piece lens group, in which the first four lenses are distributed with positive-negative-positive-negative optical powers. Further, by defining the material of the first lens as a glass material to keep the temperature drift constant, and making the first lens satisfy the relational expression 2.15 < EP01 / CT1×N1 < 2.90 to constrain the shape of the first lens. However, there is also the disadvantage that the sensitivity of the first lens is relatively large, especially the surface sensitivity of the image side surface and the tilt sensitivity of the overall component. When there is a surface deviation, the peak value of the MTF defocus curve of the lens at the full field of view will decrease, and when the component is tilted, the MTF defocus curve will show obvious discreteness. These all lead to a decline in the performance of the camera lens. Based on this, the present application uses the relational expression two 1.85 < L / (CT1 + CT2 + CT3) < 2.30 and the relational expression three 1.35 < EP01 / EP12 < 2.05 to constrain the shapes of the first three lenses, ensuring that the overall thickness of the first three lenses accounts for a relatively large proportion of the total height of the lens, thereby ensuring the overall strength of the first three lenses. When the lens assembly starts, the structural strength of these three lenses can support the frictional force and radial pressure between the lens and the spacer under a slightly interference state, avoiding lens tilt. At the same time, ensuring that the ratio of the edge thickness of the first lens to the second lens is within a suitable range, thereby ensuring that the pressure transmission from the second lens to the first lens during the assembly process is more stable and uniform, which is beneficial to controlling the stability of the surface shape of the first lens after assembly.

[0017] The present application also provides a camera lens, including a lens barrel and a lens group and a bearing member group accommodated within the lens barrel. The lens group includes, arranged in sequence along the optical axis from the object side to the image side: a first lens with positive optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with negative optical power, and a fifth lens with optical power; the non-effective diameter region of the object side surface of the first lens is in contact with the inner wall of the lens barrel; The bearing member group includes: A first abutting member disposed on the image side of the first lens and in contact with the image side surface of the first lens; A second abutting member disposed on the image side of the second lens and in contact with the image side surface of the second lens; A third abutting member disposed on the image side of the third lens and in contact with the image side surface of the third lens; A fourth abutting member disposed on the image side of the fourth lens and in contact with the image side surface of the fourth lens; Specifically, the camera lens further satisfies: 6.60 < L / ∑AT < 8.50; -1.30 < f12 / f45 < -0.45; and 1.65 < (EP01 + EP12) / (EP23 + EP34) < 2.55; Wherein, f12 is the combined focal length of the first lens and the second lens, f45 is the combined focal length of the fourth lens and the fifth lens, L is the maximum height of the lens barrel, ∑AT is the sum of the air gaps on the optical axis between two adjacent lenses in the camera lens, EP01 is the distance along the optical axis from the object side surface of the lens barrel to the object side surface of the first abutting member, EP12 is the distance along the optical axis between the first abutting member and the second abutting member, EP23 is the distance along the optical axis between the second abutting member and the third abutting member, and EP34 is the distance along the optical axis between the third abutting member and the fourth abutting member.

[0018] In summary, the camera lens provided in this application uses five lenses, and the optical powers of the first four lenses are distributed as positive-negative-positive-negative. Since the air gaps of the camera lens on the optical axis occupy less overall space and the lenses have more influence on the traveling path of light, by directly controlling the combined focal lengths of the first and second lenses, and the fourth and fifth lenses, it is ensured that the chief ray in the incident light is transmitted along a predetermined path. At the same time, by constraining EP01, EP12, EP23, and EP34, a reasonable distribution of the edge thicknesses of each lens can be achieved, thereby ensuring the lens forming process and determining the positions of the middle three abutting members along the optical axis, and ensuring the vignetting effect of the abutting members on light. Description of the Drawings

[0019] Figure 1A It is a schematic structural diagram of the camera lens under working condition 1-1 in Embodiment 1; Figure 1B It is a schematic structural diagram of the camera lens under working condition 1-2 in Embodiment 1; Figure 1C It is a schematic structural diagram of the camera lens under working condition 1-3 in Embodiment 1; Figure 2ASchematic diagram of axial chromatic aberration of the camera lens in Example 1; Figure 2B Schematic diagram of astigmatism of the camera lens in Example 1; Figure 2C Schematic diagram of distortion of the camera lens in Example 1; Figure 3A Schematic diagram of the structure of the camera lens under working condition 2-1 in Example 2; Figure 3B This is a schematic diagram of the structure of the camera lens under working condition 2-2 in Example 2; Figure 3C This is a schematic diagram of the structure of the camera lens under working condition 2-3 in Example 2; Figure 4A Schematic diagram of axial chromatic aberration of the camera lens in Example 2; Figure 4B Schematic diagram of astigmatism of the camera lens in Example 2; Figure 4C Schematic diagram of distortion of the camera lens in Example 2; Figure 5A This is a schematic diagram of the structure of the camera lens under working condition 3-1 in Example 3; Figure 5B This is a schematic diagram of the structure of the camera lens under working condition 3-2 in Example 3; Figure 5C This is a schematic diagram of the structure of the camera lens under working condition 3-3 in Example 3; Fig. 6A Schematic diagram of axial chromatic aberration of the camera lens in Example 3; Figure 6B Schematic diagram of astigmatism of the camera lens in Example 3; Figure 6C Schematic diagram of distortion of the camera lens in Example 3; Fig. 7A This is a schematic diagram of the structure of the camera lens under working condition 4-1 in Example 4; Figure 7B Schematic diagram of the structure of the camera lens under working condition 4-2 in Example 4; Figure 7C This is a schematic diagram of the structure of the camera lens under working condition 4-3 in Example 4; Fig. 8A Schematic diagram of axial chromatic aberration of the camera lens in Example 4; Figure 8B Schematic diagram of astigmatism of the camera lens in Embodiment 4; Figure 8C Schematic diagram of distortion of the camera lens in Embodiment 4; Fig.9A A schematic diagram of partial dimension markings of a camera lens provided in the present application; Fig. 9B A schematic diagram of the remaining size marking of a camera lens provided in this application; Fig. 10A The MTF curve of the camera lens is shown when EP01 / CT1×N1=2.8; L / (CT1+CT2+CT3)=1.5; EP01 / EP12=1.1; Fig. 10B The MTF curve of the camera lens is shown when EP01 / CT1×N1=2.8; L / (CT1+CT2+CT3)=2.1; EP01 / EP12=1.6; Fig. 10C The MTF curve of the camera lens is shown when EP01 / CT1×N1=2.8; L / (CT1+CT2+CT3)=2.5; EP01 / EP12=2.3.

[0020] Reference numerals: E1, first lens; E2, second lens; E3, third lens; E4, fourth lens; E5, fifth lens; P0, lens barrel; P1, first supporting member; P2, second supporting member; P3, third supporting member; P4, fourth supporting member. DETAILED DESCRIPTION

[0021] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0023] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0024] In this article, the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial area. The judgment of the surface type in the paraxial area can be judged according to the general method in this field, for example, the positive and negative R value (R refers to the radius of curvature of the paraxial area) is used to judge the concave and convex. In this article, the surface of each lens closest to the subject is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens. For the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0025] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0026] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0027] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can also be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0028] It should be noted that the effective diameter region involved in this application is the region on the lens for refracting light, rather than the structural part of the lens. The non-effective diameter region is mainly used for assembling with the lens barrel or abutting and positioning with the abutting member. The direction based on which the thickness (such as edge thickness, center thickness, etc.) involved in this article is calculated is the optical axis direction.

[0029] According to one aspect of the present application, as Figure 1A well as Fig.9A and Fig. 9B shown in Figure 1A FIG. 11 is a schematic structural diagram of a camera lens under working condition 1-1 in the first embodiment, Fig.9A FIG. 13 is a schematic diagram of partial dimension markings of a camera lens provided by the present application, Fig. 9B FIG. 15 is a schematic diagram of the remaining dimension markings of a camera lens provided by the present application. One embodiment of the present application proposes a camera lens, which may include a lens barrel P0 and a lens group and an abutting member group accommodated within the lens barrel P0. The lens group includes, in order from the object side to the image side along the optical axis: a first lens E1 with positive optical power, a second lens E2 with negative optical power, a third lens E3 with positive optical power, a fourth lens E4 with negative optical power, and a fifth lens E5 with optical power. The non-effective diameter region of the object side surface of the first lens E1 contacts the inner wall of the lens barrel P0; The refractive index of the first lens E1 is greater than that of other lenses; The abutting member group includes: a first abutting member P1 placed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1, a second abutting member P2 placed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2, a third abutting member P3 placed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3, a fourth abutting member P4 placed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4, The outer side of the lens barrel P0 has an inclined surface, and the diameters of the first lens E1 to the fifth lens E5 increase in sequence; In particular, the camera lens further satisfies: 2.15 < EP01 / CT1 × N1 < 2.90; 1.85 < L / (CT1 + CT2 + CT3) < 2.30; and 1.35 < EP01 / EP12 < 2.05; Wherein, EP01 is the distance from the object side of the lens barrel P0 to the object side of the first bearing member P1 along the optical axis direction, CT1 is the central thickness of the first lens E1, N1 is the refractive index of the first lens E1, L is the maximum height of the lens barrel P0, CT2 is the central thickness of the second lens E2, CT3 is the central thickness of the third lens E3, and EP12 is the distance between the first bearing member P1 and the second bearing member P2 along the optical axis direction.

[0030] It should be noted that the imaging lens provided in this application adopts a five-lens lens group, in which the first four lenses are distributed with positive-negative-positive-negative optical powers. Further, by defining the material of the first lens E1 as a glass material to keep the temperature drift constant, and making the first lens E1 satisfy the relationship 2.15 < EP01 / CT1 × N1 < 2.90 to constrain the shape of the first lens E1. However, this also has the drawback that the sensitivity of the first lens E1 is relatively large, especially the surface sensitivity of the image side and the tilt sensitivity of the overall component. When there is a surface deviation, it will cause the peak value of the MTF defocus curve of the lens full field of view to decrease, and when the component is tilted, it will cause obvious discreteness in the MTF defocus curve, which all lead to a decrease in the performance of the imaging lens. Based on this, this application uses the relationship two 1.85 < L / (CT1 + CT2 + CT3) < 2.30 and the relationship three 1.35 < EP01 / EP12 < 2.05 to constrain the shapes of the first three lenses, ensuring that the overall thickness of the first three lenses accounts for a relatively large proportion of the total height of the lens, thereby ensuring the overall strength of the first three lenses. When the lenses start to be assembled, the structural strength of these three lenses can support the frictional force and radial pressure between the lens and the spacer under a slightly interference state, avoiding lens tilt, and at the same time ensuring that the edge thickness ratio of the first lens E1 and the second lens E2 is within a suitable range, so as to ensure that the pressure transmission from the second lens E2 to the first lens E1 during the assembly process is more stable and uniform, which is beneficial to controlling the stability of the surface shape of the first lens E1 after assembly.

[0031] Exemplarily, Fig. 10A shows the MTF curve of the imaging lens when EP01 / CT1 × N1 = 2.8; L / (CT1 + CT2 + CT3) = 1.5; EP01 / EP12 = 1.1, Fig. 10B shows the MTF curve of the imaging lens when EP01 / CT1 × N1 = 2.8; L / (CT1 + CT2 + CT3) = 2.1; EP01 / EP12 = 1.6, Fig. 10CThe MTF curve of the camera lens is shown when EP01 / CT1×N1 = 2.8; L / (CT1+CT2+CT3) = 2.5; EP01 / EP12 = 2.3. In the figure, the horizontal axis is the discrete position (Defocusing Position, unit: mm), and the vertical axis is the modulation. The positive and negative signs in the legend are for reflecting the discreteness. In the legend, 1.9 represents the 1.0 field of view (F). From this, it can be inferred that 1.71 is the 0.9 field of view (F), and 0.19 is the 0.1 field of view (F). From Figure 10A~10C By comparison, when the relationship formula one is EP01 / CT1×N1 = 2.8, and when the relationship formula two is L / (CT1+CT2+CT3) = 2.1 and the relationship formula three is EP01 / EP12 = 1.6, the peak value of the MTF curve is within the assessment range, and the field curvature is concentrated. This camera lens has good imaging quality; when the relationship formula is L / (CT1+CT2+CT3) = 1.5 and the relationship formula three is EP01 / EP12 = 1.1, the first lens E1 is prone to the problem of element tilt, Fig. 10A The off-axis field defocus curves in the middle and outside show an obvious discrete state, resulting in the on-axis MTF being lower than the assessment value, which indicates that the imaging quality of the camera lens at this time is poor; when the relationship formula is L / (CT1+CT2+CT3) = 2.5 and the relationship formula three is EP01 / EP12 = 2.3, the edge thickness of the second lens E2 is thinner, and the force transmission to the first lens E1 during assembly is more direct, Fig. 10C in which there is a situation where the peak value of the full field of view drops by 5 to 10 points, which indicates that the imaging quality of the camera lens at this time is poor. In summary, making the camera lens meet the protection scope of the present application can reduce the influence of the first lens E1 on the MTF peak value and discreteness, thereby improving the imaging quality.

[0032] Preferably, the camera lens satisfies: 2.2 ≤ EP01 / CT1×N1 ≤ 2.86; 1.87 ≤ L / (CT1+CT2+CT3) ≤ 2.26; 1.38 ≤ EP01 / EP12 ≤ 2.03.

[0033] According to some embodiments of the present application, the inner diameter of the image side of the lens barrel P0 is greater than the inner diameter of the object side of the lens barrel P0 and is integrally formed. The lens barrel P0 satisfies: 4.65mm < d0m / tan(Semi-FOV) < 5.00mm, where d0m is the inner diameter of the image side of the lens barrel P0, and Semi-FOV is half of the maximum field of view angle of the camera lens.

[0034] In this way, the effective diameters of multiple lenses from the object side to the image side in the camera lens gradually increase. By restricting the relationship between the inner diameter of the image side of the lens barrel P0 and the field of view angle to meet the above conditional formula, it can be ensured that the camera lens has a large field of view angle, and the image side of the lens barrel P0 will not block the effective light rays.

[0035] Preferably, the lens barrel P0 satisfies: 4.68mm≤d0m / tan(Semi-FOV)≤4.97mm.

[0036] According to some embodiments of the present application, the inner diameter d4s of the object side of the fourth supporting member P4, the inner diameter d3s of the object side of the third supporting member P3, the maximum thickness CP3 of the third supporting member P3 along the optical axis, and the maximum thickness CP4 of the fourth supporting member P4 along the optical axis satisfy the following conditions: 25.65mm -1 <d4s / d3s / (CP3+CP4)<31.50mm -1 .

[0037] In this way, by controlling the ratio of the inner diameter of the third / fourth supporting member P4 and CP3 / CP4 within the above-mentioned conditional range, the inner aperture size and position of the third supporting member P3 and the fourth supporting member P4 can be used to control the propagation path of the guided edge field imaging light inside the lens, and at the same time, the stray light that directly passes through the edge of the fourth lens E4 can be effectively blocked, thereby improving the imaging quality.

[0038] Preferably, the camera lens meets the following requirements: 25.68mm -1 ≤d4s / d3s / (CP3+CP4)≤31.49mm -1 .

[0039] According to some embodiments of the present application, the center thickness CT4 of the fourth lens E4, the center thickness CT5 of the fifth lens E5, and the spacing EP34 between the third supporting member P3 and the fourth supporting member P4 along the optical axis direction satisfy: 1.00<(CT4+CT5) / EP34<2.75.

[0040] In this way, by keeping the above conditional expression within a reasonable range, it is possible to ensure that the thickness ratio of the middle thickness of the fourth lens E4 and the fifth lens E5 to the edge thickness of the fourth lens E4 (ratio of the structural area to the center thickness) is within a reasonable range, thereby effectively improving the molding stability of the fourth lens E4 and the fifth lens E5, which is beneficial to designing the surface data of the two lenses, and thus beneficial to improving the lens yield.

[0041] Preferably, the camera lens satisfies: 1.01≤(CT4+CT5) / EP34≤2.72.

[0042] According to some embodiments of the present application, the interval EP12 between the first supporting member P1 and the second supporting member P2 along the optical axis, the center thickness CT2 of the second lens E2, the refractive index N2 of the second lens E2, the interval EP23 between the second supporting member P2 and the third supporting member P3 along the optical axis, the center thickness CT3 of the third lens E3, and the refractive index N3 of the third lens E3 satisfy the following: 2.25 <EP12 / CT2×N2<3.40; 0.90 <EP23 / CT3×N3<1.20。

[0043] In this way, by controlling the above two conditional expressions within a suitable range, it can be indirectly ensured that the thickness ratio (ratio of the structural area to the center thickness) of the second lens E2 and the third lens E3 is within a suitable range and the refractive power of the lens. The second lens has a higher refractive index, and a reasonable thickness ratio can ensure the mass production stability of the lens and reduce the probability of the occurrence of welding marks, so that the lens can obtain better imaging quality.

[0044] Preferably, the camera lens satisfies: 2.26≤EP12 / CT2×N2≤3.37, 0.93≤EP23 / CT3×N3≤1.17.

[0045] According to some embodiments of the present application, the effective focal length f1 of the first lens E1, the effective focal length f3 of the third lens E3, the inner diameter d3s of the object side surface of the third supporting member P3, and the inner diameter d1s of the object side surface of the first supporting member P1 satisfy the following relationship: 0.45 <f1 / f3 / (d3s / d1s)<1.20。

[0046] In this way, by controlling the effective focal length of the first / third lens E3 and the ratio of the inner diameters of the first supporting member P1 and the third supporting member P3 within this range, not only can the focal lengths of the first lens E1 and the third lens E3 be effectively controlled, indirectly ensuring that the curvature radii of the two lenses are within an appropriate range, but controlling the inner diameters of the first supporting member P1 and the third supporting member P3 can effectively intercept the internal reflected stray light of the first lens E1 and the third lens E3, thereby suppressing the stray light of the overall lens.

[0047] Preferably, the camera lens satisfies: 0.49≤f1 / f3 / (d3s / d1s)≤1.15.

[0048] According to some embodiments of the present application, the interval distance EP23 between the second supporting member P2 and the third supporting member P3 along the optical axis, the center thickness CT3 of the third lens E3, and the distance SG32 along the optical axis from the intersection of the image side surface of the third lens E3 and the optical axis to the contact surface between the object side surface of the third supporting member P3 and the non-effective area of ​​the image side surface of the third lens E3 satisfy the following: 2.90<(EP23+CT3) / SG32<4.20.

[0049] In this way, by controlling the above conditional expressions, the edge thickness, middle thickness and sagittal height of the third lens E3 as well as the image side surface can be directly controlled, thereby ensuring the molding processability of this lens. Controlling SG32 can ensure the curvature of this lens, ensure the stability of demolding after molding, and prevent the lens from sticking to the mold.

[0050] Preferably, the camera lens satisfies: 2.92≤(EP23+CT3) / SG32≤4.18.

[0051] According to some embodiments of the present application, the outer diameter OD1 of the first lens E1 and the object-side minimum aperture d0smin of the lens barrel P0 satisfy the following relationship: 1.90 <OD1 / d0smin<2.30。

[0052] In this way, by controlling the ratio of the first lens E1 to the entrance aperture of the lens barrel P0 within a suitable range, the outer diameter of the first lens E1 can be ensured to be within a suitable range, while ensuring that the aperture of the lens head is within a required range, ensuring the minimization of the shape of the lens, and indirectly controlling the bearing position of the first lens E1 during assembly and the force-bearing position of the lens barrel P0 to be non-misaligned, ensuring the assembly stability of subsequent lenses and improving the assembly yield.

[0053] Preferably, the camera lens satisfies: 1.94≤OD1 / d0smin≤2.29.

[0054] According to some embodiments of the present application, the image side surface of the fifth lens E5 has at least one inflection point, and the inner diameter d0m of the image side surface of the lens barrel P0, the object side minimum aperture d0smin of the lens barrel P0, the outer diameter OD5 of the fifth lens E5, and the outer diameter OD1 of the first lens E1 satisfy the following relationship: 1.75<(d0m-d0smin) / (OD5-OD1)≤2.20.

[0055] In this way, by controlling the above-mentioned conditional expression within this range, the maximum radial difference from the object side to the image side of the lens is directly guaranteed, thereby ensuring that the maximum external dimensions of the lens are within an appropriate range. At the same time, the uniformity of the overall thickness of the lens barrel P0 is guaranteed, the molding stability of the lens barrel P0 is improved, and the unevenness of cooling shrinkage is reduced, thereby improving the dimensional accuracy of the inner diameter of the lens barrel P0, which is beneficial to improving the overall yield of the lens barrel P0.

[0056] Preferably, the camera lens satisfies: 1.79≤(d0m-d0smin) / (OD5-OD1)≤2.22.

[0057] According to some embodiments of the present application, the combined focal length f12 of the first lens E1 and the second lens E2, the combined focal length f45 of the fourth lens E4 and the fifth lens E5, the spacing distance EP12 between the first supporting member P1 and the second supporting member P2 along the optical axis, the spacing distance EP23 between the second supporting member P2 and the third supporting member P3 along the optical axis, the spacing distance EP34 between the third supporting member P3 and the fourth supporting member P4 along the optical axis, and the maximum distance EP45 from the image side surface of the fourth supporting member P4 to the image side surface non-effective diameter area of ​​the fifth lens E5 along the optical axis satisfy: -1.30 <f12 / f45<-0.45; 0.85≤(EP12+EP23) / (EP34+EP45)≤1.40.

[0058] In this way, by controlling the above conditional expression within a suitable range, the combined focal lengths of the first and second lenses and the fourth and fifth lenses can be directly controlled, thereby ensuring that the principal light in the incident light is transmitted along a predetermined path, and at the same time, the edge thickness distribution of the last four lenses can be reasonably distributed, ensuring the molding process of the lens and the positions of the three middle supporting parts along the optical axis, thereby ensuring the vignetting effect on the light.

[0059] Preferably, the camera lens satisfies: -1.25≤f12 / f45≤-0.5, 0.85≤(EP12+EP23) / (EP34+EP45)≤1.40.

[0060] According to some embodiments of the present application, the object side surface of the first lens is convex, the image side surface of the second lens is concave, the combined focal length f12 of the first lens E1 and the second lens E2, the refractive index N1 of the first lens E1, the refractive index N2 of the second lens E2, the distance EP01 from the object side surface of the lens barrel P0 to the object side surface of the first supporting member P1 along the optical axis, and the maximum thickness CP1 of the first supporting member P1 along the optical axis satisfy the following conditions: 1.05 mm < f12 / (N1 + N2) < 1.2 mm; 2.95 < EP01 / (CP1 + CT2) ≤ 5.15.

[0061] In this way, by controlling the above conditional expressions within an appropriate range, the incident angle and refraction direction of the imaging light when entering the front end of the optical system are ensured, the FOV of the optical system meets the design requirements, and at the same time, the wall thickness of the head of the lens barrel P0 can be directly controlled, ensuring the strength of the lens barrel P0 when assembled and stressed, and improving the stability of lens assembly.

[0062] Preferably, the imaging lens satisfies: 1.07 mm ≤ f12 / (N1 + N2) ≤ 1.16 mm, 2.98 ≤ EP01 / (CP1 + CT2) ≤ 5.15.

[0063] According to some embodiments of the present application, the object side surface of the third lens is concave and the image side surface is convex, and the object side surface of the fifth lens is convex and the image side surface is concave.

[0064] In this way, the surface shape design of the third lens and the fifth lens is beneficial to correcting chromatic aberration and improving imaging quality.

[0065] The present application also provides an imaging lens, including a lens barrel P0 and a lens group and a support member group accommodated within the lens barrel P0. The lens group includes, in order from the object side to the image side along the optical axis: a first lens E1 having a positive optical power, a second lens E2 having a negative optical power, a third lens E3 having a positive optical power, a fourth lens E4 having a negative optical power, and a fifth lens E5 having an optical power; the non-effective diameter region of the object side surface of the first lens E1 is in contact with the inner wall of the lens barrel P0; The support member group includes: A first support member P1 disposed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1; A second support member P2 disposed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2; A third support member P3 disposed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3; A fourth support member P4 disposed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4; In particular, the imaging lens further satisfies: 6.60 < L / ∑AT < 8.50; -1.30 < f12 / f45 < -0.45; and 1.65 < (EP01 + EP12) / (EP23 + EP34) < 2.55; Among them, f12 is the combined focal length of the first lens E1 and the second lens E2, f45 is the combined focal length of the fourth lens E4 and the fifth lens E5, L is the maximum height of the lens barrel P0, ∑AT is the sum of the air gaps on the optical axis between two adjacent lenses in the camera lens, EP01 is the distance from the object side of the lens barrel P0 to the object side of the first supporting member P1 along the optical axis, EP12 is the spacing distance between the first supporting member P1 and the second supporting member P2 along the optical axis, EP23 is the spacing distance between the second supporting member P2 and the third supporting member P3 along the optical axis, and EP34 is the spacing distance between the third supporting member P3 and the fourth supporting member P4 along the optical axis.

[0066] Preferably, the camera lens meets the following requirements: 6.63≤L / ∑AT≤8.45, -1.25≤f12 / f45≤-0.50, 1.66≤(EP01+EP12) / (EP23+EP34)≤2.53.

[0067] In summary, the camera lens provided in the present application uses five lenses, among which the optical focal lengths of the first four lenses are distributed according to positive-negative-positive-negative. Since the air gap of the camera lens on the optical axis occupies a smaller part of the overall space, the lens has a greater impact on the travel path of light, such as blocking effective light and stray light. By directly controlling the combined focal length of the first, second, fourth and fifth lenses, it is ensured that the main light in the incident light is transmitted along a predetermined path. At the same time, the constraints of EP01, EP12, EP23 and EP34 can be used to reasonably distribute the edge thickness distribution of each lens, thereby ensuring the molding process of the lens and determining the positions of the three middle supporting parts along the optical axis, thereby ensuring the vignetting effect of the supporting parts on the light.

[0068] Some specific but non-restrictive embodiments of the above-mentioned embodiments of the present application are described in more detail below with reference to the accompanying drawings. For ease of description, in the following embodiments, OBJ represents the object surface of the optical lens, STO represents the surface of the aperture, S1 represents the object side surface of the first lens E1, S2 represents the image side surface of the first lens E1, S3 represents the object side surface of the second lens E2, S4 represents the image side surface of the second lens E2, S5 represents the object side surface of the third lens E3, S6 represents the image side surface of the third lens E3, S7 represents the object side surface of the fourth lens E4, S8 represents the image side surface of the fourth lens E4, S9 is the object side surface of the fifth lens E5, and S10 is the image side surface of the fifth lens E5. In addition, Aj represents the j-th order aspheric coefficient, j=4, 6, 8, 10, 12, 14, 16, 18, 20.

[0069] Embodiment 1 like Figures 1A to 1C As shown, Figures 1A to 1CSchematic diagram of the structure of the camera lens in three working conditions of the first embodiment. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a supporting member group contained in the lens barrel P0. The lens group includes: a first lens E1 with positive focal power, a second lens E2 with negative focal power, a third lens E3 with positive focal power, a fourth lens E4 with negative focal power, and a fifth lens E5 with negative focal power, which are arranged in sequence from the object side to the image side along the optical axis, wherein the object side non-effective diameter area of ​​the first lens E1 contacts the inner wall of the lens barrel P0. , the refractive index of the first lens E1 is greater than the refractive indexes of other lenses; the supporting member group includes a first supporting member P1 disposed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1, a second supporting member P2 disposed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2, a third supporting member P3 disposed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3, and a fourth supporting member P4 disposed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4.

[0070] In this embodiment, the object side surface of the first lens E1 is convex and the image side surface is concave, the object side surface of the second lens E2 is concave and the image side surface is concave, the object side surface of the third lens E3 is concave and the image side surface is convex, the object side surface of the fourth lens E4 is convex and the image side surface is concave, and the object side surface of the fifth lens E5 is convex and the image side surface is concave. It should be noted that the surface shape of a lens usually refers to the concavity and convexity of the lens paraxial area, and the paraxial area is the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial area. The judgment of the surface shape in the paraxial area can be based on the judgment method of the general knowledgeable person in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial area, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the concavity and convexity. For the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0071] In this embodiment, the optical parameters (surface shape, radius of curvature, thickness, material and cone coefficient) of the effective diameter area of ​​the lens are the same among the camera lenses of the three working conditions, while the structural parameters of the supporting parts and the structural parameters of the non-effective diameter area of ​​the lens are different. The specific difference parameters include d1s, d3s, d4s, d0m, EP01, EP12, CP1, EP23, CP3, EP34, CP4, L, SG32, d0smin, OD1, OD5, and EP45.

[0072] In addition, Table 1 shows basic optical parameters of the camera lens of the first embodiment, wherein the units of the curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0073] Table 1: Basic optical parameters of the camera lens of Example 1

[0074] It should be noted that the materials in Table 1 include the refractive index and the Abbe number at a wavelength of 555 nm. For example, the material 1.671 and 55.4 of S1 in Table 1 respectively indicate that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0075] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape of each aspherical lens is x The following aspheric formulas can be used but are not limited to: ; in, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below lists the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspheric mirror surface S1 to S10 in Example 1.

[0076] Table 2: Table of aspheric coefficients of the camera lens of Example 1

[0077] like FIG. 2A to FIG. 2C As shown, Figure 2A is an axial chromatic aberration curve diagram of the camera lens shown in Example 1, Figure 2B is an astigmatism curve diagram of the camera lens shown in Example 1, Figure 2C is a distortion curve diagram of the camera lens shown in Example 1. Figure 2A~2C It can be seen that the camera lens in the first embodiment can achieve good imaging quality.

[0078] Embodiment 2 like Figures 3A to 3C As shown, FIG. 3A to FIG. 3CSchematic diagram of the structure of the camera lens in three working conditions of the second embodiment. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a supporting member group contained in the lens barrel P0. The lens group includes: a first lens E1 with positive focal power, a second lens E2 with negative focal power, a third lens E3 with positive focal power, a fourth lens E4 with negative focal power, and a fifth lens E5 with negative focal power, which are arranged in sequence from the object side to the image side along the optical axis, wherein the non-effective diameter area of ​​the object side surface of the first lens E1 contacts the inner wall of the lens barrel P0. , the refractive index of the first lens E1 is greater than the refractive indexes of other lenses; the supporting member group includes a first supporting member P1 disposed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1, a second supporting member P2 disposed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2, a third supporting member P3 disposed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3, and a fourth supporting member P4 disposed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4.

[0079] In this embodiment, the object-side surface of the first lens E1 is convex, and the image-side surface is concave, the object-side surface of the second lens E2 is convex, and the image-side surface is concave, the object-side surface of the third lens E3 is concave, and the image-side surface is convex, the object-side surface of the fourth lens E4 is concave, and the image-side surface is convex, and the object-side surface of the fifth lens E5 is convex, and the image-side surface is concave.

[0080] In this embodiment, the optical parameters (surface shape, radius of curvature, thickness, material and cone coefficient) of the effective diameter area of ​​the lens are the same among the camera lenses of the three working conditions, while the structural parameters of the supporting parts and the structural parameters of the non-effective diameter area of ​​the lens are different. The specific difference parameters include d1s, d3s, d4s, d0m, EP01, EP12, CP1, EP23, CP3, EP34, CP4, L, SG32, d0smin, OD1, OD5, and EP45.

[0081] In addition, Table 3 shows basic optical parameters of the camera lens of Example 2, wherein the units of the curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0082] Table 3: Basic optical parameters of the camera lens of Example 2

[0083] The materials in Table 3 include refractive index and Abbe number at a wavelength of 555 nm. For example, the materials 1.671 and 55.4 of S1 in Table 3 respectively indicate that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0084] In this embodiment, the object side surface and the image side surface of any lens from the second lens E2 to the fifth lens E5 are both aspherical surfaces, and the surface shape of each aspherical lens can be defined by the aspherical surface formula given in the above-mentioned embodiment 2. The following Table 4 gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface S1 to S10 in embodiment 2.

[0085] Table 4: Table of aspheric coefficients of the camera lens of Example 2

[0086] like FIG. 4A to FIG. 4C As shown, Figure 4A is an axial chromatic aberration curve diagram of the camera lens shown in Example 2, Figure 4B is an astigmatism curve diagram of the camera lens shown in Example 2, Figure 4C is a distortion curve diagram of the camera lens shown in Example 2. Figures 4A to 4C It can be seen that the camera lens in the second embodiment can achieve good imaging quality.

[0087] Embodiment 3 like Figures 5A to 5C As shown, FIG. 5A to FIG. 5C Schematic diagram of the structure of the camera lens in three working conditions of the third embodiment. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a supporting member group contained in the lens barrel P0. The lens group includes: a first lens E1 with positive focal power, a second lens E2 with negative focal power, a third lens E3 with positive focal power, a fourth lens E4 with negative focal power, and a fifth lens E5 with positive focal power, which are arranged in sequence from the object side to the image side along the optical axis, wherein the non-effective diameter area of ​​the object side surface of the first lens E1 contacts the inner wall of the lens barrel P0. , the refractive index of the first lens E1 is greater than the refractive indexes of other lenses; the supporting member group includes a first supporting member P1 disposed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1, a second supporting member P2 disposed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2, a third supporting member P3 disposed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3, and a fourth supporting member P4 disposed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4.

[0088] In this embodiment, the object-side surface of the first lens E1 is convex, and the image-side surface is concave, the object-side surface of the second lens E2 is convex, and the image-side surface is concave, the object-side surface of the third lens E3 is concave, and the image-side surface is convex, the object-side surface of the fourth lens E4 is concave, and the image-side surface is concave, and the object-side surface of the fifth lens E5 is convex, and the image-side surface is concave.

[0089] In this embodiment, the optical parameters (surface shape, radius of curvature, thickness, material and cone coefficient) of the effective diameter area of ​​the lens are the same among the camera lenses of the three working conditions, while the structural parameters of the supporting parts and the structural parameters of the non-effective diameter area of ​​the lens are different. The specific difference parameters include d1s, d3s, d4s, d0m, EP01, EP12, CP1, EP23, CP3, EP34, CP4, L, SG32, d0smin, OD1, OD5, and EP45.

[0090] In addition, Table 5 shows basic optical parameters of the camera lens of Example 3, wherein the units of the curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0091] Table 5: Basic optical parameters of the camera lens of Example 3

[0092] The materials in Table 5 include refractive index and Abbe number at a wavelength of 555 nm. For example, the materials 1.671 and 55.4 of S1 in Table 5 respectively indicate that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0093] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape of each aspherical lens can be defined by the aspherical surface formula given in the above embodiment 3. The following Table 6 gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface S1 to S10 in embodiment 3.

[0094] Table 6: Table of aspheric coefficients of the camera lens of Example 3

[0095] like FIG. 6A to FIG. 6C As shown, Fig. 6A is an on-axis chromatic aberration curve diagram of the camera lens shown in Example 3, Figure 6B is an astigmatism curve diagram of the camera lens shown in Example 3, Figure 6C is a distortion curve diagram of the camera lens shown in Example 3. Figure 6A~6C It can be seen that the camera lens in the third embodiment can achieve good imaging quality.

[0096] Embodiment 4 like Figures 7A to 7C As shown, FIG. 7A to FIG. 7CSchematic diagram of the structure of the camera lens in three working conditions of the fourth embodiment. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a supporting member group contained in the lens barrel P0. The lens group includes: a first lens E1 with positive focal power, a second lens E2 with negative focal power, a third lens E3 with positive focal power, a fourth lens E4 with negative focal power, and a fifth lens E5 with negative focal power, which are arranged in sequence from the object side to the image side along the optical axis, wherein the non-effective diameter area of ​​the object side surface of the first lens E1 contacts the inner wall of the lens barrel P0. , the refractive index of the first lens E1 is greater than the refractive indexes of other lenses; the supporting member group includes a first supporting member P1 disposed on the image side of the first lens E1 and in contact with the image side surface of the first lens E1, a second supporting member P2 disposed on the image side of the second lens E2 and in contact with the image side surface of the second lens E2, a third supporting member P3 disposed on the image side of the third lens E3 and in contact with the image side surface of the third lens E3, and a fourth supporting member P4 disposed on the image side of the fourth lens E4 and in contact with the image side surface of the fourth lens E4.

[0097] In this embodiment, the object-side surface of the first lens E1 is convex, and the image-side surface is convex, the object-side surface of the second lens E2 is convex, and the image-side surface is concave, the object-side surface of the third lens E3 is concave, and the image-side surface is convex, the object-side surface of the fourth lens E4 is concave, and the image-side surface is convex, and the object-side surface of the fifth lens E5 is convex, and the image-side surface is concave.

[0098] In this embodiment, the optical parameters (surface shape, radius of curvature, thickness, material and cone coefficient) of the effective diameter area of ​​the lens are the same among the camera lenses of the three working conditions, while the structural parameters of the supporting parts and the structural parameters of the non-effective diameter area of ​​the lens are different. The specific difference parameters include d1s, d3s, d4s, d0m, EP01, EP12, CP1, EP23, CP3, EP34, CP4, L, SG32, d0smin, OD1, OD5, and EP45.

[0099] In addition, Table 7 shows basic optical parameters of the camera lens of Example 4, wherein the units of the curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0100] Table 7: Basic optical parameters of the camera lens of Example 4

[0101] The materials in Table 7 include refractive index and Abbe number at a wavelength of 555 nm. For example, the materials 1.671 and 55.4 of S1 in Table 7 respectively indicate that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0102] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape of each aspherical lens can be defined by the aspherical surface formula given in the above-mentioned embodiment 4. The following Table 8 gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each aspherical mirror surface S1 to S10 in embodiment 4.

[0103] Table 8: Table of aspheric coefficients of the camera lens of Example 4

[0104] like FIG. 8A to FIG. 8C As shown, Fig. 8A is an on-axis chromatic aberration curve diagram of the camera lens shown in Example 4, Figure 8B is an astigmatism curve diagram of the camera lens shown in Example 4, Figure 8C is a distortion curve diagram of the camera lens shown in Example 4. Figures 8A to 6C It can be seen that the camera lens in the fourth embodiment can achieve good imaging quality.

[0105] In summary, in Embodiments 1 to 4, the effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5 in the camera lens, the effective focal length f of the optical lens, and half of the maximum field of view Semi-FOV of the optical lens are respectively as shown in Table 9 below.

[0106] Table 9: System optical parameters of camera lenses

[0107] In addition, some structural parameters of the camera lenses in Embodiments 1 to 4 are specifically shown in Table 10, with the unit being (mm).

[0108] Table 10: Some structural parameters of camera lenses

[0109] In summary, the camera lenses in Embodiments 1 to 4 satisfy the relationship shown in Table 11, as shown in Table 11.

[0110] Table 11: Relationships satisfied by camera lenses

[0111] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A camera lens, characterized in that: It includes a lens barrel, a lens group and a support member group accommodated within the lens barrel. The lens group includes, arranged in sequence from the object side to the image side along the optical axis: a first lens with a positive focal power, a second lens with a negative focal power, a third lens with a positive focal power, a fourth lens with a negative focal power, and a fifth lens with a focal power. The non-effective diameter region of the object side surface of the first lens contacts the inner wall of the lens barrel; The refractive index of the first lens is greater than that of other lenses; The support member group includes: a first support member placed on the image side of the first lens and contacting the image side surface of the first lens, a second support member placed on the image side of the second lens and contacting the image side surface of the second lens, a third support member placed on the image side of the third lens and contacting the image side surface of the third lens, a fourth support member placed on the image side of the fourth lens and contacting the image side surface of the fourth lens, The outer side of the lens barrel has an inclined surface, and the diameters of the first lens to the fifth lens increase in sequence; In particular, the camera lens further satisfies: 2.15 < EP01 / CT1×N1 < 2.90; 1.85 < L / (CT1 + CT2 + CT3) < 2.30; and 1.35 < EP01 / EP12 < 2.05; wherein, EP01 is the distance along the optical axis from the object side surface of the lens barrel to the object side surface of the first support member, CT1 is the central thickness of the first lens, N1 is the refractive index of the first lens, L is the maximum height of the lens barrel, CT2 is the central thickness of the second lens, CT3 is the central thickness of the third lens, and EP12 is the distance along the optical axis between the first support member and the second support member.

2. The imaging lens according to claim 1, wherein: The inner diameter of the image side surface of the lens barrel is greater than the inner diameter of the object side surface of the lens barrel and is integrally formed. The lens barrel satisfies: 4.65mm < d0m / tan(Semi-FOV) < 5.00mm, where d0m is the inner diameter of the image side surface of the lens barrel, and Semi-FOV is half of the maximum field of view angle of the camera lens.

3. The imaging lens according to claim 2, wherein: Among the inner diameter d4s of the object side surface of the fourth support member, the inner diameter d3s of the object side surface of the third support member, the maximum thickness CP3 of the third support member along the optical axis, and the maximum thickness CP4 of the fourth support member along the optical axis, the following is satisfied: 25.65mm -1 <d4s / d3s / (CP3+CP4)<31.50mm -1 。 4. The imaging lens according to claim 1, wherein: Among the central thickness CT4 of the fourth lens, the central thickness CT5 of the fifth lens, and the distance EP34 along the optical axis between the third support member and the fourth support member, the following is satisfied: 1.00 < (CT4 + CT5) / EP34 < 2.

75.

5. The imaging lens according to claim 1, wherein: Among the distance EP12 along the optical axis between the first support member and the second support member, the central thickness CT2 of the second lens, the refractive index N2 of the second lens, the distance EP23 along the optical axis between the second support member and the third support member, the central thickness CT3 of the third lens, and the refractive index N3 of the third lens, the following is satisfied: 2.25 < EP12 / CT2×N2 < 3.40; 0.90 < EP23 / CT3×N3 < 1.

20.

6. The imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, the effective focal length f3 of the third lens, the inner diameter d3s of the object side surface of the third supporting member, and the inner diameter d1s of the object side surface of the first supporting member satisfy the following conditions: 0.45 <f1 / f3 / (d3s / d1s)<1.20。 7. The imaging lens according to claim 1, wherein: The spacing distance EP23 between the second supporting member and the third supporting member along the optical axis, the center thickness CT3 of the third lens, and the distance SG32 along the optical axis from the intersection of the image side surface of the third lens and the optical axis to the contact surface between the object side surface of the third supporting member and the non-effective area of ​​the image side surface of the third lens meet the following conditions: 2.90<(EP23+CT3) / SG32<4.

20.

8. The imaging lens according to claim 1, wherein: The outer diameter OD1 of the first lens and the object side minimum aperture d0smin of the lens barrel satisfy: 1.90 <OD1 / d0smin<2.30。 9. The imaging lens according to claim 1, wherein: The image side surface of the fifth lens has at least one inflection point, and the inner diameter d0m of the image side surface of the lens barrel, the minimum aperture d0smin of the object side of the lens barrel, the outer diameter OD5 of the fifth lens, and the outer diameter OD1 of the first lens satisfy the following conditions: 1.75<(d0m-d0smin) / (OD5-OD1)≤2.

20.

10. The imaging lens according to claim 1, wherein: The combined focal length f12 of the first lens and the second lens, the combined focal length f45 of the fourth lens and the fifth lens, the spacing distance EP12 between the first supporting member and the second supporting member along the optical axis, the spacing distance EP23 between the second supporting member and the third supporting member along the optical axis, the spacing distance EP34 between the third supporting member and the fourth supporting member along the optical axis, and the maximum distance EP45 from the image side surface of the fourth supporting member to the image side surface non-effective diameter area of ​​the fifth lens along the optical axis satisfy the following conditions: -1.30 <f12 / f45<-0.45; 0.85≤(EP12+EP23) / (EP34+EP45)≤1.

40.

11. The imaging lens according to claim 1, wherein: The object side surface of the first lens is convex, the image side surface of the second lens is concave, the combined focal length of the first lens and the second lens is f12, the refractive index of the first lens is N1, the refractive index of the second lens is N2, the distance EP01 from the object side surface of the lens barrel to the object side surface of the first supporting member along the optical axis, and the maximum thickness CP1 of the first supporting member along the optical axis satisfy: 1.05mm <f12 / (N1+N2)<1.2mm; 2.95 <EP01 / (CP1+CT2)≤5.15。 12. The imaging lens according to claim 1, wherein: The object side surface of the third lens is concave and the image side surface is convex, and the object side surface of the fifth lens is convex and the image side surface is concave.

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