Camera lens

Abstract

The present application relates to a camera lens, which includes a lens barrel, a lens group and a support member group accommodated in the lens barrel. The lens group includes first to fifth lenses arranged in order from the object to the image along the optical axis. The optical powers of the first four lenses are distributed as positive-negative-positive-negative. The object side of the first lens contacts the inner wall of the lens barrel and has the largest refractive index. The support member group includes four spacers respectively located between two adjacent lenses. The outer side of the lens barrel has an inclined surface. The diameters of the first lens to the fifth lens gradually increase. The distance EP01 along the optical axis direction from the object side of the lens barrel to the object side of the first support member, the distance EP12 between the first and second support members along the optical axis direction, the central thicknesses CT1 to CT3 of the first to third lenses, and the refractive index N1 of the first lens satisfy 2.15 < EP01 / CT1 × N1 < 2.90, 1.85 < L / (CT1 + CT2 + CT3) < 2.30, and 1.35 < EP01 / EP12 < 2.05.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and particularly 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, the camera lens mainly functions in image capture and recognition, spatial positioning and tracking, three-dimensional construction, etc. With the iteration and function upgrade of terminal products, the requirements for the main features of the imaging lens therein, such as the resolution level, field of view angle, reliability and stability, and size thinness, are gradually increasing and the application scenarios are more diversified; therefore, the camera lens also needs to meet the requirements for use in different environments. Among them, the influence of temperature on the lens performance is very significant, that is, the problem of lens thermal drift. To solve the problem of lens thermal drift, a common practice is to add a glass lens in the camera lens. However, the sensitivity of the glass lens is relatively large. When assembling the lens group, the cooperative slightly interference state will cause the lens to bear frictional force and radial pressure. If the connection strength between the glass lens and the lens barrel is insufficient, it is easy to cause the lens to be assembled obliquely, resulting in a decrease in the yield rate of lens production. Summary of the Invention

[0003] Based on the fact that the existing camera lens is prone to have an adverse impact on the assembly and use performance of the lens after using a glass lens to solve the problem of lens thermal drift, it is necessary to provide a camera lens.

[0004] A camera lens includes a lens barrel and a lens group and a support 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 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 area of the object side surface of the first lens contacts the inner wall of the lens barrel;

[0005] The refractive index of the first lens is greater than that of other lenses;

[0006] The support member group includes: a first support member disposed on the image side of the first lens and contacting the image side surface of the first lens,

[0007] a second support member disposed on the image side of the second lens and contacting the image side surface of the second lens,

[0008] a third support member disposed on the image side of the third lens and contacting the image side surface of the third lens,

[0009] a fourth support member disposed on the image side of the fourth lens and contacting the image side surface of the fourth lens,

[0010] 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;

[0011] In particular, the camera lens further satisfies:

[0012] 2.15 < EP01 / (CT1 × N1) < 2.90;

[0013] 1.85 < L / (CT1 + CT2 + CT3) < 2.30; and

[0014] 1.35 < EP01 / EP12 < 2.05;

[0015] wherein, EP01 is the distance along the optical axis from the object side of the lens barrel to the object side of the first bearing 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 bearing member and the second bearing member.

[0016] 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, and 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.

[0017] 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, and the maximum thickness CP4 of the fourth bearing member along the optical axis:

[0018] 25.65 mm -1 < d4s / d3s / (CP3 + CP4) < 31.50 mm -1 .

[0019] 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 along the optical axis between the third bearing member and the fourth bearing member:

[0020] 1.00 < (CT4 + CT5) / EP34 < 2.75.

[0021] In some embodiments of the present application, 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 satisfy:

[0022] 2.25 < EP12 / CT2 × N2 < 3.40;

[0023] 0.90 < EP23 / CT3 × N3 < 1.20.

[0024] 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 of the third bearing member, and the inner diameter d1s of the object side of the first bearing member satisfy:

[0025] 0.45 < f1 / f3 / (d3s / d1s) < 1.20.

[0026] In some embodiments of the present application, 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 distance SG32 along the optical axis from the intersection of the image side of the third lens and the optical axis to the contact surface of the non-effective region of the object side of the third bearing member and the image side of the third lens satisfy:

[0027] 2.90 < (EP23 + CT3) / SG32 < 4.20.

[0028] In some embodiments of the present application, the outer diameter OD1 of the first lens and the minimum object-side aperture d0smin of the lens barrel satisfy:

[0029] 1.90 < OD1 / d0smin < 2.30.

[0030] In some embodiments of the present application, the image side of the fifth lens has at least one inflection point, and the inner diameter d0m of the image side of the lens barrel, the minimum object-side aperture d0smin of the lens barrel, the outer diameter OD5 of the fifth lens, and the outer diameter OD1 of the first lens satisfy:

[0031] 1.75 < (d0m - d0smin) / (OD5 - OD1) ≤ 2.20.

[0032] 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 axial distance EP12 between the first abutting member and the second abutting member, the axial distance EP23 between the second abutting member and the third abutting member, the axial distance EP34 between the third abutting member and the fourth abutting member, and the maximum axial distance EP45 from the image side surface of the fourth abutting member to the non-effective diameter region of the image side surface of the fifth lens satisfy:

[0033] -1.30 < f12 / f45 < -0.45;

[0034] 0.85 ≤ (EP12 + EP23) / (EP34 + EP45) ≤ 1.40.

[0035] 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 axial distance EP01 from the object side surface of the lens barrel to the object side surface of the first abutting member, and the maximum axial thickness CP1 of the first abutting member satisfy:

[0036] 1.05 mm < f12 / (N1 + N2) < 1.2 mm;

[0037] 2.95 < EP01 / (CP1 + CT2) ≤ 5.15.

[0038] 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.

[0039] In summary, the camera lens provided in this 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, this also has the drawback of a relatively large sensitivity of the first lens, especially the surface sensitivity of the side and the tilting sensitivity of the overall component. When there is a surface deviation, the peak value of the MTF defocus curve of the full field of view of the lens will decrease, and when the component tilts, the MTF defocus curve will show obvious dispersion, all of which lead to a decline in the performance of the camera lens. Based on this, this 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 conducive to controlling the stability of the surface shape of the first lens after assembly.

[0040] This application also provides a camera lens, including a lens barrel and a lens group and a support member group accommodated in 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 optical power, a second lens with a negative optical power, a third lens with a positive optical power, a fourth lens with a negative optical power, and a fifth lens with an optical power; the non-effective diameter region of the object side surface of the first lens contacts the inner wall of the lens barrel;

[0041] The support member group includes:

[0042] A first support member placed on the image side of the first lens and contacting the image side surface of the first lens;

[0043] A second support member placed on the image side of the second lens and contacting the image side surface of the second lens;

[0044] A third support member placed on the image side of the third lens and contacting the image side surface of the third lens;

[0045] A fourth support member placed on the image side of the fourth lens and contacting the image side surface of the fourth lens;

[0046] In particular, the camera lens further satisfies:

[0047] 6.60 < L / ∑AT < 8.50;

[0048] -1.30 < f12 / f45 < -0.45; and

[0049] 1.65 < (EP01 + EP12) / (EP23 + EP34) < 2.55;

[0050] 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 of the lens barrel to the object side of the first bearing member, EP12 is the distance along the optical axis between the first bearing member and the second bearing member, EP23 is the distance along the optical axis between the second bearing member and the third bearing member, and EP34 is the distance along the optical axis between the third bearing member and the fourth bearing member.

[0051] In summary, the camera lens provided in this application uses five lenses. 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 a greater impact on the 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 imposing constraints on 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 bearing members along the optical axis, and ensuring the vignetting effect of the bearing members on light. Description of the Drawings

[0052] Figure 1A It is a schematic structural diagram of the camera lens under working condition 1-1 in Embodiment 1;

[0053] Figure 1B It is a schematic structural diagram of the camera lens under working condition 1-2 in Embodiment 1;

[0054] Figure 1C It is a schematic structural diagram of the camera lens under working condition 1-3 in Embodiment 1;

[0055] Figure 2A It is a schematic diagram of axial chromatic aberration of the camera lens in Embodiment 1;

[0056] Figure 2B It is a schematic diagram of astigmatism of the camera lens in Embodiment 1;

[0057] Figure 2C It is a schematic diagram of distortion of the camera lens in Embodiment 1;

[0058] Figure 3ASchematic diagram of the structure of the camera lens under working condition 2-1 in Embodiment 2;

[0059] Figure 3B Schematic diagram of the structure of the camera lens under working condition 2-2 in Embodiment 2;

[0060] Figure 3C Schematic diagram of the structure of the camera lens under working condition 2-3 in Embodiment 2;

[0061] Figure 4A Schematic diagram of the axial chromatic aberration of the camera lens in Embodiment 2;

[0062] Figure 4B Schematic diagram of the astigmatism of the camera lens in Embodiment 2;

[0063] Figure 4C Schematic diagram of the distortion of the camera lens in Embodiment 2;

[0064] Figure 5A Schematic diagram of the structure of the camera lens under working condition 3-1 in Embodiment 3;

[0065] Figure 5B Schematic diagram of the structure of the camera lens under working condition 3-2 in Embodiment 3;

[0066] Figure 5C Schematic diagram of the structure of the camera lens under working condition 3-3 in Embodiment 3;

[0067] Figure 6A Schematic diagram of the axial chromatic aberration of the camera lens in Embodiment 3;

[0068] Figure 6B Schematic diagram of the astigmatism of the camera lens in Embodiment 3;

[0069] Figure 6C Schematic diagram of the distortion of the camera lens in Embodiment 3;

[0070] Figure 7A Schematic diagram of the structure of the camera lens under working condition 4-1 in Embodiment 4;

[0071] Figure 7B Schematic diagram of the structure of the camera lens under working condition 4-2 in Embodiment 4;

[0072] Figure 7C Schematic diagram of the structure of the camera lens under working condition 4-3 in Embodiment 4;

[0073] Figure 8A Schematic diagram of the axial chromatic aberration of the camera lens in Embodiment 4;

[0074] Figure 8B Schematic diagram of the astigmatism of the camera lens in Embodiment 4;

[0075] Figure 8C Schematic diagram of the distortion of the camera lens in Embodiment 4

[0076] Figure 9A Schematic diagram of partial dimension markings of a camera lens provided by the present application

[0077] Figure 9B Schematic diagram of the remaining dimension markings of a camera lens provided by the present application

[0078] Figure 10A Shows the MTF curve of the camera lens when EP01 / CT1×N1 = 2.8; L / (CT1 + CT2 + CT3) = 1.5; EP01 / EP12 = 1.1

[0079] Figure 10B Shows the MTF curve of the camera lens when EP01 / CT1×N1 = 2.8; L / (CT1 + CT2 + CT3) = 2.1; EP01 / EP12 = 1.6

[0080] Figure 10C Shows the MTF curve of the camera lens when EP01 / CT1×N1 = 2.8; L / (CT1 + CT2 + CT3) = 2.5; EP01 / EP12 = 2.3

[0081] Reference numerals:

[0082] E1, the first lens; E2, the second lens; E3, the third lens; E4, the fourth lens; E5, the fifth lens; P0, the lens barrel; P1, the first bearing member; P2, the second bearing member; P3, the third bearing member; P4, the fourth bearing member Detailed implementation manners

[0083] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the exemplary embodiments of the present application and do not 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

[0084] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens

[0085] In the drawings, for ease of illustration, the thickness, dimensions, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are for example only and are not drawn to an exact scale.

[0086] In this document, the paraxial region refers to the region 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 region; 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 region. The judgment of the surface shape in the paraxial region can be made according to the general methods in the art, for example, judging the convexity and concavity by the positive or negative value of the R value (R refers to the radius of curvature in the paraxial region). In this document, the surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens. For the object side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave; for the image side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0087] It should also be understood that the terms "comprises", "comprising", "has", "including", and / or "containing", when used in this specification, denote the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features, rather than an individual element in the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0088] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formalized sense unless expressly so defined herein.

[0089] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, 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 drawings and in conjunction with the embodiments.

[0090] It should be noted that the effective diameter region involved in the present application is the region on the lens for refracting light, and the non-effective diameter region is the structural part of the lens, which 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.

[0091] According to one aspect of the present application, as Figure 1A and Figure 9A 、 Figure 9B shown, Figure 1A is a schematic structural diagram of the camera lens under working condition 1-1 in Embodiment 1, Figure 9A is a schematic diagram of partial dimension markings of a camera lens provided by the present application, Figure 9B is a schematic diagram of the remaining dimension markings of a camera lens provided by the present application. An implementation manner of the present application provides 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, arranged in sequence along the optical axis from the object side to the image side: 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;

[0092] The refractive index of the first lens E1 is greater than that of other lenses;

[0093] The abutting member group includes: a first abutting member P1 placed on the image side of the first lens E1 and contacting the image side surface of the first lens E1,

[0094] a second abutting member P2 placed on the image side of the second lens E2 and contacting the image side surface of the second lens E2,

[0095] a third abutting member P3 placed on the image side of the third lens E3 and contacting the image side surface of the third lens E3,

[0096] a fourth abutting member P4 placed on the image side of the fourth lens E4 and contacting the image side surface of the fourth lens E4,

[0097] 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;

[0098] In particular, the camera lens further satisfies:

[0099] 2.15 < EP01 / CT1×N1 < 2.90;

[0100] 1.85 < L / (CT1 + CT2 + CT3) < 2.30; and

[0101] 1.35 < EP01 / EP12 < 2.05;

[0102] Wherein, EP01 is the distance along the optical axis from the object side of the lens barrel P0 to the object side of the first bearing member P1, 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 along the optical axis between the first bearing member P1 and the second bearing member P2.

[0103] It should be noted that the camera lens provided in this application adopts a five - lens group. Among them, the first four lenses are distributed with positive - negative - positive - negative optical powers. Further, by defining the material of the first lens E1 as glass material to keep the temperature drift constant, and making the first lens E1 satisfy the relation 2.15 < EP01 / CT1×N1 < 2.90 to restrict the shape of the first lens E1. However, there is also 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 full field of view of the lens to drop, and when the component is tilted, it will cause obvious dispersion in the MTF defocus curve, which all lead to the performance degradation of the camera lens. Based on this, this application uses the relation two 1.85 < L / (CT1 + CT2 + CT3) < 2.30 and the relation three 1.35 < EP01 / EP12 < 2.05 to restrict 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 thicknesses of the first lens E1 and the second lens E2 is within a suitable range, thus ensuring 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.

[0104] Exemplarily, Figure 10AThe MTF curve of the camera lens is shown when EP01 / CT1×N1 = 2.8; L / (CT1 + CT2 + CT3) = 1.5; EP01 / EP12 = 1.1. Figure 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. Figure 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. 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 in the legend are for showing 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). Figure 10A to 10C By comparison, when the relationship formula 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, and the camera lens has better 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. Figure 10A The off-focus curves of the middle and outer fields 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. Figure 10C In this case, the peak value of the entire field of view drops by 5 - 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.

[0105] 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.

[0106] According to some embodiments of the present application, the inner diameter of the image side of the lens barrel P0 is larger than the inner diameter of the object side of the lens barrel P0 and is integrally formed. The lens barrel P0 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 P0, and Semi - FOV is half of the maximum field of view angle of the camera lens.

[0107] In this way, the effective diameters of multiple lenses from the object side to the image side in the camera lens gradually increase. By constraining 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 larger field of view angle, and the image side of the lens barrel P0 will not block the effective light rays.

[0108] Preferably, the lens barrel P0 satisfies: 4.68 mm ≤ d0m / tan(Semi - FOV) ≤ 4.97 mm.

[0109] According to some embodiments of the present application, between the inner diameter d4s of the object side of the fourth bearing member P4, the inner diameter d3s of the object side of the third bearing member P3, the maximum thickness CP3 of the third bearing member P3 in the optical axis direction, and the maximum thickness CP4 of the fourth bearing member P4 in the optical axis direction, the following is satisfied:

[0110] 25.65 mm -1 < d4s / d3s / (CP3 + CP4) < 31.50 mm -1 。

[0111] In this way, by controlling the ratio of the inner diameter of the third / fourth bearing member P4 to CP3 / CP4 within the range of the above conditional formula, the propagation path of the imaging light rays of the guiding edge field of view inside the lens can be controlled by using the inner aperture sizes and positions of the third bearing member P3 and the fourth bearing member P4. At the same time, the stray light directly transmitted through the edge of the fourth lens E4 can be effectively blocked, improving the imaging quality.

[0112] Preferably, the camera lens satisfies: 25.68 mm -1 ≤ d4s / d3s / (CP3 + CP4) ≤ 31.49 mm -1 。

[0113] According to some embodiments of the present application, between the central thickness CT4 of the fourth lens E4, the central thickness CT5 of the fifth lens E5, and the distance EP34 between the third bearing member P3 and the fourth bearing member P4 in the optical axis direction, the following is satisfied:

[0114] 1.00 < (CT4 + CT5) / EP34 < 2.75.

[0115] In this way, within a reasonable range through the above conditional expressions, it is possible to ensure that the ratio of the center thickness to the edge thickness of the fourth lens E4 and the fifth lens E5 (the ratio of the structural region 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, facilitating the design of the surface shape data of these two lenses, and thus being conducive to improving the yield rate of the lens.

[0116] Preferably, the imaging lens satisfies: 1.01 ≤ (CT4 + CT5) / EP34 ≤ 2.72.

[0117] According to some embodiments of the present application, the distance EP12 between the first bearing member P1 and the second bearing member P2 in the optical axis direction, the center thickness CT2 of the second lens E2, the refractive index N2 of the second lens E2, the distance EP23 between the second bearing member P2 and the third bearing member P3 in the optical axis direction, the center thickness CT3 of the third lens E3, and the refractive index N3 of the third lens E3 satisfy:

[0118] 2.25 < EP12 / CT2 × N2 < 3.40;

[0119] 0.90 < EP23 / CT3 × N3 < 1.20.

[0120] In this way, by controlling the above two conditional expressions within a suitable range, it is possible to indirectly ensure that the ratio of the center thickness to the edge thickness of the second lens E2 and the third lens E3 (the ratio of the structural region to the center thickness) and the refractive power of the lens are within a suitable range. Among them, the second lens has a relatively high refractive index, and a reasonable ratio of the center thickness to the edge thickness can ensure the mass production stability of the lens and reduce the probability of the appearance of welding marks, thereby enabling the lens to obtain better imaging quality.

[0121] Preferably, the imaging lens satisfies: 2.26 ≤ EP12 / CT2 × N2 ≤ 3.37, 0.93 ≤ EP23 / CT3 × N3 ≤ 1.17.

[0122] 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 of the third bearing member P3, and the inner diameter d1s of the object side of the first bearing member P1 satisfy:

[0123] 0.45 < f1 / f3 / (d3s / d1s) < 1.20.

[0124] In this way, by controlling the effective focal lengths of the first / third lenses E3 and the ratio of the inner diameters of the first bearing member P1 and the third bearing 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 radii of curvature of these two lenses are within a suitable range, but also by controlling the inner diameters of the first bearing member P1 and the third bearing member P3, the internal stray light reflected within the first lens E1 and the third lens E3 can be effectively intercepted, thereby suppressing the stray light of the overall lens.

[0125] Preferably, the imaging lens satisfies: 0.49 ≤ f1 / f3 / (d3s / d1s) ≤ 1.15.

[0126] According to some embodiments of the present application, the distance EP23 between the second bearing member P2 and the third bearing member P3 along the optical axis direction, the central thickness CT3 of the third lens E3, and the distance SG32 between the intersection of the image side of the third lens E3 and the optical axis and the contact surface along the optical axis direction between the object side of the third bearing member P3 and the non-effective area of the image side of the third lens E3 satisfy:

[0127] 2.90 < (EP23 + CT3) / SG32 < 4.20.

[0128] In this way, by controlling the above conditional formula, the edge thickness and central thickness of the third lens E3 and the sagitta height of the image side can be directly controlled, thereby ensuring the formability of this lens. Controlling SG32 can ensure the bending degree of this lens, ensure the stability of demolding after molding, and prevent the situation of the lens sticking to the mold.

[0129] Preferably, the imaging lens satisfies: 2.92 ≤ (EP23 + CT3) / SG32 ≤ 4.18.

[0130] According to some embodiments of the present application, the outer diameter OD1 of the first lens E1 and the minimum object-side aperture d0smin of the lens barrel P0 satisfy:

[0131] 1.90 < OD1 / d0smin < 2.30.

[0132] In this way, by controlling the ratio of the outer diameter of the first lens E1 to the aperture of the inlet hole 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, and at the same time, the aperture of the head of the lens is ensured to be within the required range, ensuring the minimization of the shape of the lens, and also indirectly controlling that there is no misalignment between the bearing position of the first lens E1 during assembly and the stress position of the lens barrel P0, ensuring the assembly stability of the subsequent lenses and improving the assembly yield.

[0133] Preferably, the imaging lens satisfies: 1.94 ≤ OD1 / d0smin ≤ 2.29.

[0134] According to some embodiments of the present application, the image side of the fifth lens E5 has at least one inflection point, and the following relationships are satisfied among the inner diameter d0m of the image side of the lens barrel P0, the minimum object-side 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:

[0135] 1.75 < (d0m - d0smin) / (OD5 - OD1) ≤ 2.20.

[0136] In this way, by controlling the above conditional formula within this range, the maximum radial gap from the object side to the image side of the lens is directly ensured, thereby ensuring that the maximum outer dimension of the lens is within a suitable range. At the same time, the uniformity of the overall wall thickness of the lens barrel P0 is ensured, the forming stability of the lens barrel P0 is improved, the non-uniformity of cooling shrinkage is reduced, and thus the dimensional accuracy of the inner diameter of the lens barrel P0 is improved, which is beneficial to the improvement of the overall yield of the lens barrel P0.

[0137] Preferably, the imaging lens satisfies: 1.79 ≤ (d0m - d0smin) / (OD5 - OD1) ≤ 2.22.

[0138] According to some embodiments of the present application, the following relationships are satisfied among 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 axial distance EP12 between the first bearing member P1 and the second bearing member P2, the axial distance EP23 between the second bearing member P2 and the third bearing member P3, the axial distance EP34 between the third bearing member P3 and the fourth bearing member P4, and the maximum axial distance EP45 from the image side of the fourth bearing member P4 to the non-effective diameter region of the image side of the fifth lens E5:

[0139] -1.30 < f12 / f45 < -0.45;

[0140] 0.85 ≤ (EP12 + EP23) / (EP34 + EP45) ≤ 1.40.

[0141] In this way, by controlling the above conditional formula within a suitable range, the combined focal lengths of the first and second lenses and the fourth and fifth lenses can be directly controlled, so as to ensure that the chief ray in the incident light is transmitted along a predetermined path. At the same time, the edge thickness distribution of the latter four lenses can be reasonably allocated, the forming process of the lenses is ensured, and the positions of the middle three bearing members along the optical axis are ensured, thereby ensuring the vignetting effect on the light.

[0142] Preferably, the imaging lens satisfies: -1.25 ≤ f12 / f45 ≤ -0.5, 0.85 ≤ (EP12 + EP23) / (EP34 + EP45) ≤ 1.40.

[0143] 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 bearing member P1 along the optical axis direction, and the maximum thickness CP1 of the first bearing member P1 along the optical axis direction satisfy:

[0144] 1.05mm < f12 / (N1 + N2) < 1.2mm;

[0145] 2.95 < EP01 / (CP1 + CT2) ≤ 5.15.

[0146] In this way, by controlling the above conditional expressions within a suitable 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 assembly stability of the lens.

[0147] Preferably, the camera lens satisfies: 1.07mm ≤ f12 / (N1 + N2) ≤ 1.16mm, 2.98 ≤ EP01 / (CP1 + CT2) ≤ 5.15.

[0148] 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.

[0149] 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.

[0150] The present application also provides a camera lens, including a lens barrel P0 and a lens group and a bearing member group accommodated in the lens barrel P0. The lens group includes, arranged in sequence 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 is in contact with the inner wall of the lens barrel P0;

[0151] The bearing member group includes:

[0152] a first bearing 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;

[0153] A second bearing 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;

[0154] A third bearing 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;

[0155] A fourth bearing 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;

[0156] Specifically, the imaging lens further satisfies:

[0157] 6.60 < L / ∑AT < 8.50;

[0158] -1.30 < f12 / f45 < -0.45; and

[0159] 1.65 < (EP01 + EP12) / (EP23 + EP34) < 2.55;

[0160] Wherein, 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 imaging lens, EP01 is the distance along the optical axis from the object side surface of the lens barrel P0 to the object side surface of the first bearing member P1, EP12 is the distance along the optical axis between the first bearing member P1 and the second bearing member P2, EP23 is the distance along the optical axis between the second bearing member P2 and the third bearing member P3, and EP34 is the distance along the optical axis between the third bearing member P3 and the fourth bearing member P4.

[0161] Preferably, the imaging lens satisfies:

[0162] 6.63 ≤ L / ∑AT ≤ 8.45, -1.25 ≤ f12 / f45 ≤ -0.50, 1.66 ≤ (EP01 + EP12) / (EP23 + EP34) ≤ 2.53.

[0163] In summary, the camera lens provided in this application uses five lenses. The optical powers of the first four lenses are distributed as positive-negative-positive-negative. Since the air gap on the optical axis of the camera lens occupies less of the overall space, the lenses have a greater impact on the traveling path of light. For example, problems such as blocking effective light and stray light can be addressed by directly controlling the combined focal lengths of the first and second lenses, and the fourth and fifth lenses, ensuring that the chief ray in the incident light is transmitted along a predetermined path. At the same time, by implementing the constraints on 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 support members along the optical axis, ensuring the vignetting effect of the support members on light.

[0164] Some specific and non-limiting embodiments of the above-described embodiments of the present application will be described in more detail below with reference to the accompanying drawings. For ease of description, in the following embodiments, OBJ represents the object plane of the optical lens, STO represents the surface of the aperture stop, 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, where j = 4, 6, 8, 10, 12, 14, 16, 18, 20.

[0165] Embodiment 1

[0166] As Figures 1A to 1C shown, Figures 1A to 1C FIG. 13 is a schematic structural diagram of the camera lens in three working conditions of Embodiment 1. In this embodiment, the camera lens includes 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 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 negative optical power. The non-effective diameter region on the object side of the first lens E1 is in contact with the inner wall of the lens barrel P0, and the refractive index of the first lens E1 is greater than that of the other lenses. The support member group includes a first support 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 support 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 support 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, and a fourth support 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.

[0167] In this embodiment, the object side of the first lens E1 is convex and the image side is concave; the object side of the second lens E2 is concave and the image side is concave; the object side of the third lens E3 is concave and the image side is convex; the object side of the fourth lens E4 is convex and the image side is concave; the object side of the fifth lens E5 is convex and the image side is concave. It should be noted that the surface shape of a lens generally refers to the convexity and concavity in the paraxial region of the lens, and the paraxial region refers to the region 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 region; 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 region. The judgment of the surface shape in the paraxial region can be based on the judgment method of those with ordinary knowledge in this field, and the positive and negative of the R value (R refers to the radius of curvature in the paraxial region, usually the R value in the lens database (lens data) of optical software) is used to judge convexity and concavity. For the object side, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave; for the image side, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[0168] In this embodiment, among the camera lenses in three working conditions, the optical parameters (surface shape, radius of curvature, thickness, material, and conic coefficient) in the effective diameter region of the lens are the same, while the structural parameters of the support member and the structural parameters in the non-effective diameter region 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, EP45.

[0169] In addition, Table 1 shows the basic optical parameters of the camera lens in the first embodiment, where the units of the radius of curvature, thickness / distance, and effective radius are all millimeters (mm).

[0170] Table 1: Basic Optical Parameter Table of the Camera Lens in the First Embodiment

[0171]

[0172] It should be noted that the materials in Table 1 include the refractive index and Abbe number at a wavelength of 555 nm. For example, the material 1.671 and 55.4 of S1 in Table 1 respectively represent that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0173] In this embodiment, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape of each aspherical lens x can be defined by, but not limited to, the following aspherical formula:

[0174] ;

[0175] Among them, x When the aspherical surface is at a position with a height of h along the optical axis direction, it is the sagitta, the distance from the vertex of the aspherical surface; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20 that can be used for each aspherical mirror surface S1 to S10 in Embodiment 1.

[0176] Table 2: Aspherical Coefficient Table of the Camera Lens in Embodiment 1

[0177]

[0178] As Figures 2A to 2C shown, Figure 2A is the axial chromatic aberration curve graph of the camera lens shown in Embodiment 1, Figure 2B is the astigmatism curve graph of the camera lens shown in Embodiment 1, Figure 2C is the distortion curve graph of the camera lens shown in Embodiment 1. According to Figures 2A to 2C it can be known that the camera lens in Embodiment 1 can achieve good imaging quality.

[0179] Embodiment 2

[0180] As Figures 3A to 3C shown, Figures 3A to 3C is the structural schematic diagram of the camera lens in three working conditions of Embodiment 2. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a support member group accommodated within the lens barrel P0. The lens group includes, arranged in sequence along the optical axis from the object side to the image side: a first lens E1 with a positive optical power, a second lens E2 with a negative optical power, a third lens E3 with a positive optical power, a fourth lens E4 with a negative optical power, and a fifth lens E5 with a negative optical power. Among them, 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, and the refractive index of the first lens E1 is greater than that of other lenses; the support member group includes a first support 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 support 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 support 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, and a fourth support 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.

[0181] In this embodiment, the object side surface of the first lens E1 is convex, the image side surface is concave, the object side surface of the second lens E2 is convex, the image side surface is concave, the object side surface of the third lens E3 is concave, the image side surface is convex, the object side surface of the fourth lens E4 is concave, 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.

[0182] In this embodiment, among the imaging lenses of the three working conditions, the optical parameters (surface type, radius of curvature, thickness, material, and conic coefficient) in the effective diameter region of the lens are the same, while the structural parameters of the bearing member and the structural parameters in the non-effective diameter region 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, EP45.

[0183] In addition, Table 3 shows the basic optical parameters of the imaging lens of the second embodiment, where the units of the radius of curvature, thickness / distance, and effective radius are all millimeters (mm).

[0184] Table 3: Basic optical parameter table of the imaging lens of the second embodiment

[0185]

[0186] The materials in Table 3 include the refractive index and Abbe number at a wavelength of 555 nm. For example, the material 1.671 and 55.4 of S1 in Table 3 respectively represent that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0187] In this embodiment, the object side surface and the image side surface of any one of the second lens E2 to the fifth lens E5 are both aspherical surfaces, and the surface type of each aspherical lens can be defined by the aspherical formula given in the second embodiment above. Table 4 below gives the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20 for each aspherical mirror surface S1 to S10 in the second embodiment.

[0188] Table 4: Aspherical coefficient table of the imaging lens of the second embodiment

[0189]

[0190] As Figures 4A to 4C shown, Figure 4A is the axial chromatic aberration curve graph of the imaging lens shown in the second embodiment, Figure 4B is the astigmatism curve graph of the imaging lens shown in the second embodiment, Figure 4C is the distortion curve graph of the imaging lens shown in the second embodiment. According to Figures 4A to 4C it can be seen that the imaging lens in the second embodiment can achieve good imaging quality.

[0191] Embodiment III

[0192] As Figures 5A to 5C shown Figures 5A to 5C Figure 9 is a schematic structural diagram of the camera lens in three working conditions of Embodiment III. In this embodiment, the camera lens includes a lens barrel P0 and a lens group and a support member group accommodated within the lens barrel P0. The lens group includes, arranged in order from the object side to the image side along the optical axis: a first lens E1 with a positive focal power, a second lens E2 with a negative focal power, a third lens E3 with a positive focal power, a fourth lens E4 with a negative focal power, and a fifth lens E5 with a positive focal power. Among them, 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, and the refractive index of the first lens E1 is greater than that of other lenses; the support member group includes a first support 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 support 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 support 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, and a fourth support 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.

[0193] 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.

[0194] In this embodiment, among the camera lenses in the three working conditions, the optical parameters (surface type, radius of curvature, thickness, material, and conic coefficient) of the effective diameter region of the lens are the same, while the structural parameters of the support member and the structural parameters of the non-effective diameter region 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, EP45.

[0195] In addition, Table 5 shows the basic optical parameters of the camera lens of Embodiment III. Among them, the units of the radius of curvature, thickness / distance, and effective radius are all millimeters (mm).

[0196] Table 5: Basic Optical Parameter Table of the Camera Lens of Embodiment III

[0197]

[0198] The materials in Table 5 include the refractive index and Abbe number at a wavelength of 555 nm. For example, for the material S1 in Table 5, 1.671 and 55.4 indicate that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4, respectively.

[0199] In this embodiment, the object side and image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface profiles of the aspherical lenses can be defined by the aspherical formula given in the third embodiment above. Table 6 below gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20 for each of the aspherical mirror surfaces S1 to S10 in the third embodiment.

[0200] Table 6: Aspherical Coefficient Table of the Camera Lens in the Third Embodiment

[0201]

[0202] As Figures 6A to 6C shown, Figure 6A is the axial chromatic aberration curve graph of the camera lens shown in the third embodiment, Figure 6B is the astigmatism curve graph of the camera lens shown in the third embodiment, Figure 6C is the distortion curve graph of the camera lens shown in the third embodiment. According to Figures 6A to 6C it can be seen that the camera lens in the third embodiment can achieve good imaging quality.

[0203] Embodiment Four

[0204] As Figures 7A to 7C shown, Figures 7A to 7C is the structural schematic diagram 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 support member group accommodated within the lens barrel P0. The lens group includes, arranged in sequence along the optical axis from the object side to the image side: 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 negative optical power. Among them, the non-effective diameter region of the object side of the first lens E1 is in contact with the inner wall of the lens barrel P0, and the refractive index of the first lens E1 is greater than that of other lenses; the support member group includes a first support member P1 placed on the image side of the first lens E1 and in contact with the image side of the first lens E1, a second support member P2 placed on the image side of the second lens E2 and in contact with the image side of the second lens E2, a third support member P3 placed on the image side of the third lens E3 and in contact with the image side of the third lens E3, and a fourth support member P4 placed on the image side of the fourth lens E4 and in contact with the image side of the fourth lens E4.

[0205] 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; the object side surface of the fifth lens E5 is convex, and the image side surface is concave.

[0206] In this embodiment, among the camera lenses in three working conditions, the optical parameters (surface type, radius of curvature, thickness, material, and conic coefficient) in the effective diameter region of the lenses are the same, while the structural parameters of the bearing members and the structural parameters in the non-effective diameter region of the lenses are different. The specific difference parameters include d1s, d3s, d4s, d0m, EP01, EP12, CP1, EP23, CP3, EP34, CP4, L, SG32, d0smin, OD1, OD5, EP45.

[0207] In addition, Table 7 shows the basic optical parameters of the camera lens of Embodiment 4, where the units of the radius of curvature, thickness / distance, and effective radius are all millimeters (mm).

[0208] Table 7: Basic Optical Parameter Table of the Camera Lens of Embodiment 4

[0209]

[0210] The materials in Table 7 include the refractive index and Abbe number at a wavelength of 555 nm. For example, the material 1.671 and 55.4 of S1 in Table 7 respectively represent that the refractive index of the first lens E1 is 1.671 and the Abbe number is 55.4.

[0211] In this embodiment, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface types of the aspherical lenses can be defined by the aspherical formula given in Embodiment 4 above. Table 8 below gives the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20 for the aspherical surfaces S1 to S10 in Embodiment 4.

[0212] Table 8: Aspherical Coefficient Table of the Camera Lens of Embodiment 4

[0213]

[0214] As Figures 8A to 8C shown, Figure 8A is the axial chromatic aberration curve graph of the camera lens shown in Embodiment 4, Figure 8B is the astigmatism curve graph of the camera lens shown in Embodiment 4, Figure 8C is the distortion curve graph of the camera lens shown in Embodiment 4. According to Figures 8A to 6C it can be known that the camera lens in Embodiment 4 can achieve good imaging quality.

[0215] 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 angle Semi-FOV of the optical lens are shown in Table 9 below.

[0216] Table 9: System Optical Parameter Table of the Camera Lens

[0217]

[0218] In addition, some structural parameters of the camera lens in Embodiments 1 to 4 are specifically shown in Table 10, with the unit (mm).

[0219] Table 10: Partial Structural Parameter Table of the Camera Lens

[0220]

[0221] In summary, the camera lenses in Embodiments 1 to 4 satisfy the relational expressions shown in Table 11, as specifically shown in Table 11.

[0222] Table 11: Relational Expression Table Satisfied by the Camera Lens

[0223]

[0224] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0225] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended 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 camera 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: 25.65 mm -1 <d4s / d3s / (CP3 + CP4) < 31.50 mm -1 .

4. The camera 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 camera lens according to claim 1, characterized in that, The effective focal length f1 of the first lens, the effective focal length f3 of the third lens, the object-side inner diameter d3s of the third bearing member, and the object-side inner diameter d1s of the first bearing member satisfy: 0.45 < f1 / f3 / (d3s / d1s) < 1.

20.

7. The imaging lens according to claim 1, wherein The axial distance EP23 between the second bearing member and the third bearing member, the central thickness CT3 of the third lens, and the axial distance SG32 from the intersection of the image side of the third lens and the optical axis to the contact surface of the object side of the third bearing member and the non-effective area of the image side of the third lens satisfy: 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 minimum object-side 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 of the fifth lens has at least one inflection point, and the inner diameter d0m of the image side of the lens barrel, the minimum object-side aperture d0smin of the lens barrel, the outer diameter OD5 of the fifth lens, and the outer diameter OD1 of the first lens satisfy: 1.75 < (d0m - d0smin) / (OD5 - OD1) ≤ 2.

20.

10. The camera lens according to claim 1, characterized in that, 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 axial distance EP12 between the first bearing member and the second bearing member, the axial distance EP23 between the second bearing member and the third bearing member, the axial distance EP34 between the third bearing member and the fourth bearing member, and the maximum axial distance EP45 from the image side of the fourth bearing member to the non-effective diameter area of the image side of the fifth lens satisfy: -1.30 < f12 / f45 < -0.45; 0.85 ≤ (EP12 + EP23) / (EP34 + EP45) ≤ 1.

40.

11. The imaging lens according to claim 1, characterized in that, The object side of the first lens is convex, the image side 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 axial distance EP01 from the object side of the lens barrel to the object side of the first bearing member, and the maximum axial thickness CP1 of the first bearing member satisfy: 1.05 mm < f12 / (N1 + N2) < 1.2 mm; 2.95 < EP01 / (CP1 + CT2) ≤ 5.

15.

12. The camera lens according to claim 1, characterized in that, The object side of the third lens is concave and the image side is convex, and the object side of the fifth lens is convex and the image side is concave.

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