A five-element high-pixel optical imaging lens

Abstract

The present invention relates to a five-element high-pixel optical imaging lens, which comprises, from the object side to the image side, an aperture, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a filter. The five-element high-pixel optical imaging lens satisfies the following relationship: ImgH / f>0.8; 0.2≤CT1 / ΣCT≤0.35; where f is the focal length of the imaging lens group, ImgH is half the diagonal length of the effective imaging area of ​​the imaging lens group, CT1 is the thickness of the first lens on the optical axis, and ΣCT is the sum of the thicknesses of all lenses on the optical axis. The present invention utilizes a five-element lens combination to effectively ensure low-cost manufacturing. By rationally matching the refractive power, the optical imaging lens has excellent light converging capability, effectively improving imaging quality. The lens also has a shorter overall optical system length, effectively reducing the overall lens volume, making it more suitable for miniaturized electronic devices.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and in particular to a five-element high-pixel optical imaging lens. Background Art

[0002] The rapid development of technology, especially electronics, has led to the rapid spread of portable electronic devices, driving the rapid development of optical imaging lens technologies for these devices. Optical imaging lenses continue to evolve, expanding their applications to include smartphones, tablets, dashcams, and action cameras. The continuous upgrade trend of electronic products like smartphones is also driving increasingly demanding lens requirements.

[0003] To improve image quality, the number of optical lenses needs to be increased to correct for aberrations and dispersion. However, as the number of optical lenses increases, the distance between the object-side surface of the first lens and the imaging plane on the optical axis increases, hindering the thinning of mobile phones, digital cameras, and automotive lenses. Furthermore, the high manufacturing cost of existing six-element optical lenses hinders companies from improving their market competitiveness. Summary of the Invention

[0004] In order to solve at least one of the above technical problems, the present invention provides a five-element high-pixel optical imaging lens with high imaging quality, light and thin volume, and low production cost.

[0005] The present invention discloses a five-element high-pixel optical imaging lens, which comprises, from the object side to the image side, the following elements:

[0006] A first lens element having positive refractive power; its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis;

[0007] The second lens element has a negative refractive power, the object-side surface of which is convex near the optical axis and the image-side surface of which is concave near the optical axis;

[0008] The third lens element has positive refractive power, its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis;

[0009] A fourth lens element having positive refractive power; its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis;

[0010] A fifth lens element with negative refractive power; its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis;

[0011] The five-element high-pixel optical imaging lens satisfies the following relationship:

[0012] ImgH / f>0.8;

[0013] 0.2≤CT1 / ΣCT≤0.35;

[0014] Wherein, f is the focal length of the imaging lens group, ImgH is half the length of the diagonal of the effective imaging area of ​​the imaging lens group, CT1 is the thickness of the first lens on the optical axis, and ΣCT is the sum of the thicknesses of all lenses on the optical axis.

[0015] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0016] BFL / f>0.18;

[0017] Among them, f is the distance from the image side of the fifth lens of BFL to the imaging surface of the lens group on the optical axis, and f is the focal length of the imaging lens group.

[0018] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0019] 2≤|(L3R1*L3R2) / (L5R1*L5R2)|≤20;

[0020] Among them, L3R1 is the curvature radius of the image side of the third lens, L3R2 is the curvature radius of the object side of the third lens, L5R1 is the curvature radius of the object side of the fifth lens, and L5R2 is the curvature radius of the image side of the fifth lens.

[0021] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0022] 4≤(f1+f3+f4) / f≤7;

[0023] Wherein, f1 is the focal length of the first lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, and f is the focal length of the imaging lens group.

[0024] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0025] 1.75≤FNO≤2.2;

[0026] Wherein, FNO is the relative aperture value of the imaging lens group.

[0027] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0028] 1≤L2R1 / L2R2≤2.5;

[0029] Wherein, L2R1 is the curvature radius of the image side of the second lens, and L2R2 is the curvature radius of the object side of the second lens.

[0030] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0031] 1≤|f3 / f2|≤2.5;

[0032] Among them, f3 is the focal length of the third lens, and f2 is the focal length of the second lens.

[0033] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0034] 0.3≤L1R1 / f≤0.5;

[0035] Wherein, f is the focal length of the imaging lens group, and L1R1 is the radius of curvature of the image side surface of the first lens.

[0036] According to one embodiment of the present invention, a five-element high-pixel optical imaging lens satisfies the following relationship:

[0037] (ET3+ET4) / (CT3+CT4)≤0.8;

[0038] Wherein, ET3 is the edge thickness of the third lens, ET4 is the edge thickness of the fourth lens, CT3 is the thickness of the third lens on the optical axis, and CT4 is the thickness of the fourth lens on the optical axis.

[0039] According to one embodiment of the present invention, the object-side surfaces and the image-side surfaces of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are all aspherical surfaces.

[0040] The present invention adopts a five-lens combination to effectively ensure low-cost manufacturing. Through reasonable matching of refractive power, it ensures that the optical imaging lens has excellent light focusing ability, so that the optical imaging lens has high imaging quality. At the same time, it has a shorter total length of the optical system, effectively reducing the overall volume of the lens, making the lens more suitable for miniaturized electronic devices. At the same time, the size uniformity between each lens is good, which facilitates the processing and assembly of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Schematic diagram of the structure of the high-pixel optical imaging lens in Example 1.

[0042] Figure 2 Graph showing astigmatism and distortion of the high-pixel optical imaging lens in Example 1.

[0043] Figure 3 This is a vertical axis chromatic aberration curve of the five-element high-pixel optical imaging lens in Example 1.

[0044] Figure 4 Schematic diagram of the structure of the five-element high-pixel optical imaging lens in Example 2.

[0045] Figure 5Graphs showing astigmatism and distortion for the five-element high-pixel optical imaging lens in Example 2.

[0046] Figure 6 This is a vertical axis chromatic aberration curve of the five-element high-pixel optical imaging lens in Example 2.

[0047] Figure 7 Schematic diagram of the structure of the five-element high-pixel optical imaging lens in Example 3.

[0048] Figure 8 Graphs showing astigmatism and distortion for the five-element high-pixel optical imaging lens in Example 3.

[0049] Figure 9 This is a vertical axis chromatic aberration curve of the five-element high-pixel optical imaging lens in Example 3.

[0050] Figure 10 Schematic diagram of the structure of the five-element high-pixel optical imaging lens in Example 4.

[0051] Figure 11 Graphs showing astigmatism and distortion for the five-element high-pixel optical imaging lens in Example 4.

[0052] Figure 12 This is a vertical axis chromatic aberration curve of the five-element high-pixel optical imaging lens in Example 4.

[0053] Figure 13 Schematic diagram of the structure of the five-element high-pixel optical imaging lens in Example 5.

[0054] Figure 14 Graphs showing astigmatism and distortion for the five-element high-pixel optical imaging lens in Example 5.

[0055] Figure 15 This is a vertical axis chromatic aberration curve of the five-element high-pixel optical imaging lens in Example 5. DETAILED DESCRIPTION

[0056] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, the object side refers to the side of the lens facing the subject, and the surface of the lens facing the subject is the object side. The image side refers to the side of the lens facing the imaging surface, and the surface of the lens facing the imaging surface is the image side.

[0058] The object side surface of the lens described in the present invention is a convex surface, which means that when a section is made through any point on the object side surface of the lens, the surface is always on the right side of the section surface, and its radius of curvature is positive; otherwise, the object side surface is a concave surface, and its radius of curvature is negative; the image side surface is a convex surface, which means that when a section is made through any point on the image side surface of the lens, the surface is always on the left side of the section surface, and its radius of curvature is negative; otherwise, the image side surface is a concave surface, and its radius of curvature is positive; if a section is made through any point on the object side or the image side surface of the lens, the surface has both parts on the left and parts on the right side of the section surface, then there is an inflection point of the curve on the surface, and the above judgment of the convexity and concavity of the object side and image side surfaces near the optical axis still applies.

[0059] In addition, the aspheric curve equation of each lens is expressed as follows:

[0060]

[0061] Among them, Z is the distance vector height of the aspheric surface from the origin of the aspheric surface when it is at a height of r along the optical axis, c is the paraxial curvature of the aspheric surface (curvature radius R = 1 / c, which is the inverse of the curvature); k is the cone coefficient; Ai is the i-th order coefficient of the aspheric surface, and the high-order coefficients used in the present invention are A4, A6, A8, A10, A12, A14, A16, A18, and A20.

[0062] Please refer to Figure 1 shown.

[0063] The five-element high-pixel optical imaging lens of the present invention comprises, from the object side to the image side, an aperture 1, a first lens 2, a second lens 3, a third lens 4, a fourth lens 5, a fifth lens 6, and a filter 7. Each lens has an object-side surface facing the object and an image-side surface facing the image. The high-pixel optical imaging lens also includes an imaging surface 8 located on the image side.

[0064] Among them, the first lens 2 has positive refractive power, its object side surface is convex at the near optical axis, and its image side surface is concave at the near optical axis; the second lens 3 has negative refractive power, its object side surface is convex at the near optical axis, and its image side surface is concave at the near optical axis; the third lens 4 has positive refractive power, its object side surface is concave at the near optical axis, and its image side surface is convex at the near optical axis; the fourth lens 5 has positive refractive power, its object side surface is concave at the near optical axis, and its image side surface is convex at the near optical axis; the fifth lens 6 has negative refractive power, its object side surface is concave at the near optical axis, and its image side surface is concave at the near optical axis. There is a distance between any adjacent lenses of the above five lenses, and the lenses are relatively fixed and cannot move.

[0065] In the above structure, the first lens 2 adopts a positive refractive power configuration, its object side surface is convex at the near optical axis, and its image side surface is concave at the near optical axis. In this way, the ability of the first lens 2 to converge light is effectively improved, thereby improving the balance effect of paraxial aberration; the second lens 3 has a negative refractive power, its object side surface is convex at the near optical axis, and its image side surface is concave at the near optical axis. The paraxial spherical aberration is effectively corrected by the second lens 3; the third lens 4 has a positive refractive power, its object side surface is concave at the near optical axis, and its image side surface is convex at the near optical axis, thereby improving The fourth lens element 5 has a positive refractive power, and its object-side surface is concave at the near optical axis, and its image-side surface is convex at the near optical axis, which helps to improve the balancing effect of off-axis astigmatism; the fifth lens element 6 has a negative refractive power, and its object-side surface is concave at the near optical axis, and its image-side surface is concave at the near optical axis, which effectively increases the distance between the principal point of the optical imaging system and the image-side end, thereby effectively shortening the overall length of the optical imaging system, which is conducive to the miniaturization of the optical imaging system, and can correct off-axis aberrations to improve the peripheral imaging quality.

[0066] The five-element high-pixel optical imaging lens satisfies the relationship: ImgH / f>0.8, where f is the focal length of the imaging lens group and ImgH is half the diagonal length of the effective imaging area of ​​the imaging lens group. By controlling the ImgH / f ratio to meet the above relationship, the total length of the entire optical imaging system is effectively controlled, thereby avoiding excessive lens size and enabling better application of the optical lens in electronic devices.

[0067] The five-element high-pixel optical imaging lens also satisfies the relationship: 0.2≤CT1 / ΣCT≤0.35, where CT1 is the thickness of the first lens on the optical axis, and ΣCT is the sum of the thicknesses of all lenses on the optical axis. Controlling the ratio of CT1 / ΣCT to satisfy the above relationship can ensure dimensional uniformity between the lenses, thereby effectively reducing the difficulty of lens processing and assembly.

[0068] In the present application, the object-side and image-side surfaces of the first lens element 2, the second lens element 3, the third lens element 4, the fourth lens element 5, and the fifth lens element 6 are all aspherical structures. By utilizing the light, thin, and flat properties of the aspherical surface, the overall structure of the five-element high-pixel optical imaging lens of the present invention is made lighter and thinner, and the image is clearer than that of a spherical structure.

[0069] When the five-element high-pixel optical imaging lens of the present invention forms an image, light enters from the object side of the high-pixel optical imaging lens and passes through the aperture 1, the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6, and the filter 7 in sequence before being imaged on the imaging surface 8.

[0070] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: BFL / f > 0.18. Here, BFL represents the distance from the image side of the fifth lens element to the imaging plane of the lens group on the optical axis, and f represents the focal length of the imaging lens group. Controlling the BFL / f ratio to satisfy this relationship effectively increases the distance from the final lens element to the imaging plane, leaving more room for processing in later structural design.

[0071] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: 2≤|(L3R1*L3R2) / (L5R1*L5R2)|≤20. Here, L3R1 is the radius of curvature of the image side of the third lens element, L3R2 is the radius of curvature of the object side of the third lens element, L5R1 is the radius of curvature of the object side of the fifth lens element, and L5R2 is the radius of curvature of the image side of the fifth lens element. Controlling the ratio of (L3R1*L3R2) / (L5R1*L5R2) to satisfy the above relationship effectively ensures that the radius of curvature of the third lens element 4 and the fifth lens element 5 are within a reasonable range, thereby effectively eliminating higher-order aberrations and making the lens shapes more uniform, thereby effectively reducing the tolerance sensitivity of imaging.

[0072] Furthermore, the five-element high-pixel optical imaging lens satisfies the relationship: 4≤(f1+f3+f4) / f≤7. Here, f1 is the focal length of the first lens element, f3 is the focal length of the third lens element, f4 is the focal length of the fourth lens element, and f is the focal length of the imaging lens group. Controlling the ratio (f1+f3+f4) / f to satisfy this relationship effectively keeps the focal lengths of the positive-refractive first lens element 2, the third lens element 4, and the fourth lens element 5 within a reasonable range, thereby effectively improving light convergence and balancing paraxial aberrations, thereby enhancing the imaging quality of this novel five-element high-pixel optical imaging lens.

[0073] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: 1.75 ≤ FNO ≤ 2.2. FNO represents the relative aperture value of the imaging lens group. By controlling the FNO value to meet this relationship, image quality is effectively maintained while increasing the amount of light entering the overall optical imaging system.

[0074] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: 1≤L2R1 / L2R2≤2.5. Here, L2R1 is the radius of curvature of the image side of the second lens element, and L2R2 is the radius of curvature of the object side of the second lens element. Controlling the ratio of L2R1 / L2R2 to satisfy this relationship effectively ensures that the radius of curvature of the second lens element is within a reasonable range, thereby achieving a uniform lens shape and reducing the tolerance sensitivity of the second lens element.

[0075] Furthermore, the five-element, high-pixel optical imaging lens also satisfies the equation: 1≤|f3 / f2|≤2.5. Here, f3 is the focal length of the third lens element, and f2 is the focal length of the second lens element. Controlling the f3 / f2 ratio to satisfy this equation effectively balances the refractive power of the overall optical imaging system, helping to eliminate higher-order aberrations and ultimately improving the overall imaging quality of the optical imaging lens.

[0076] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: 0.3 ≤ L1R1 / f ≤ 0.5. Here, f is the focal length of the imaging lens group, and L1R1 is the radius of curvature of the image-side surface of the first lens element. Controlling the L1R1 / f ratio to satisfy this relationship effectively ensures sufficient refractive power of the first lens element, thereby improving the paraxial aberration balance of the overall optical imaging system.

[0077] Furthermore, the five-element high-pixel optical imaging lens also satisfies the relationship: (ET3+ET4) / (CT3+CT4)≤0.8. Here, ET3 is the edge thickness of the third lens element, ET4 is the edge thickness of the fourth lens element, CT3 is the thickness of the third lens element along the optical axis, and CT4 is the thickness of the fourth lens element along the optical axis. Controlling the ratio (ET3+ET4) / (CT3+CT4) to satisfy this relationship helps control the ratio of the center thickness to the edge thickness of the third and fourth lenses, thereby effectively ensuring a more uniform shape of the third and fourth lenses and reducing tolerances during the lens manufacturing process.

[0078] The five-element high-pixel optical imaging lens of the present invention will be described in detail through the following specific embodiments with reference to the accompanying drawings.

[0079] Example 1

[0080] Please refer to Figures 1 to 3 As shown, the five-element high-pixel optical imaging lens in Example 1 meets Table 1-1, Table 1-2 and Table 1-3.

[0081] Table 1-1 shows the basic parameters of the high-pixel optical imaging lens of this embodiment:

[0082]

[0083] Table 1-2 shows the aspheric coefficients of each lens in this embodiment:

[0084]

[0085]

[0086] Table 1-3 shows the values ​​of the conditional expressions in this embodiment:

[0087]

[0088] Example 2

[0089] Please refer to Figures 4 to 6 As shown, the five-element high-pixel optical imaging lens in Example 2 meets Table 2-1, Table 2-2 and Table 2-3.

[0090] Table 2-1 shows the basic parameters of the high-pixel optical imaging lens of this embodiment:

[0091]

[0092]

[0093] Table 2-2 shows the aspheric coefficients of each lens in this embodiment:

[0094]

[0095] Table 2-3 shows the values ​​of the conditional expressions in this embodiment:

[0096]

[0097] Example 3

[0098] Please refer to Figures 7 to 9 As shown, the five-element high-pixel optical imaging lens in Example 3 meets Table 3-1, Table 3-2 and Table 3-3.

[0099] Table 3-1 shows the basic parameters of the high-pixel optical imaging lens of this embodiment:

[0100]

[0101] Table 3-2 shows the aspheric coefficients of each lens in this embodiment:

[0102]

[0103] Table 3-3 shows the values ​​of the conditional expressions in this embodiment:

[0104]

[0105] Example 4

[0106] Please refer to Figures 10 to 12 As shown, the five-element high-pixel optical imaging lens in Example 4 meets Table 4-1, Table 4-2 and Table 4-3.

[0107] Table 4-1 shows the basic parameters of the high-pixel optical imaging lens of this embodiment:

[0108]

[0109] Table 4-2 shows the aspheric coefficients of each lens in this embodiment:

[0110]

[0111]

[0112] Table 4-3 shows the values ​​of the conditional expressions in this embodiment:

[0113]

[0114] Example 5

[0115] Please refer to Figures 13 to 15 As shown, the five-element high-pixel optical imaging lens in Example 5 meets Table 5-1, Table 5-2 and Table 5-3.

[0116] Table 5-1 shows the basic parameters of the high-pixel optical imaging lens of this embodiment:

[0117]

[0118] Table 5-2 shows the aspheric coefficients of each lens in this embodiment:

[0119]

[0120] Table 5-3 shows the values ​​of the conditional expressions in this embodiment:

[0121]

[0122] To facilitate comparison of the above five embodiments, the following Table 6-1 summarizes the values ​​obtained by each expression under the corresponding conditions of each embodiment:

[0123]

[0124]

[0125] In summary, the present invention adopts a five-lens combination to effectively ensure low-cost manufacturing. Through the reasonable matching of refractive power, it ensures that the optical imaging lens has better light focusing ability, so that the optical imaging lens has higher imaging quality. At the same time, it has a shorter total length of the optical system, effectively reducing the overall volume of the lens, making the lens more suitable for miniaturized electronic devices. At the same time, the size uniformity between each lens is good, which facilitates the processing and assembly of the lens.

[0126] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0127] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0128] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, improvements and variations are included in the spirit and scope of the present invention.

Claims

1. A five-element high-pixel optical imaging lens, characterized in that: From the object side to the image side, it includes: A first lens element having positive refractive power; its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis; The second lens element has a negative refractive power, the object-side surface of which is convex near the optical axis and the image-side surface of which is concave near the optical axis; The third lens element has positive refractive power, its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis; A fourth lens element having positive refractive power; its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis; A fifth lens element with negative refractive power; its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis; The five-element high-pixel optical imaging lens satisfies the following relationship: 0.8<ImgH / f<0.875; 0.2≤CT1 / ΣCT≤0.35; Wherein, f is the focal length of the imaging lens group, ImgH is half the length of the diagonal of the effective imaging area of ​​the imaging lens group, CT1 is the thickness of the first lens on the optical axis, and ΣCT is the sum of the thicknesses of all lenses on the optical axis; 1.75≤FNO≤2.2, where FNO is the relative aperture value of the imaging lens group; 1≤L2R1 / L2R2≤2.5, where L2R1 is the radius of curvature of the object side of the second lens, and L2R2 is the radius of curvature of the image side of the second lens; 0.3≤L1R1 / f≤0.5, where f is the focal length of the imaging lens group, and L1R1 is the radius of curvature of the object side of the first lens; 0.18<BFL / f<0.244, where BFL is the distance from the image side of the fifth lens to the imaging surface of the lens group on the optical axis, and f is the focal length of the imaging lens group; 2≤|(L3R1*L3R2) / (L5R1*L5R2)|≤13.141; wherein, L3R1 is the curvature radius of the image side surface of the third lens, L3R2 is the curvature radius of the objective side surface of the third lens, L5R1 is the curvature radius of the objective side surface of the fifth lens, and L5R2 is the curvature radius of the image side surface of the fifth lens.

2. The five-element high-pixel optical imaging lens according to claim 1, wherein: The five-element high-pixel optical imaging lens satisfies the following relationship: 4≤(f1+f3+f4) / f≤7; Wherein, f1 is the focal length of the first lens, f3 is the focal length of the third lens, f4 is the focal length of the fourth lens, and f is the focal length of the imaging lens group.

3. The five-element high-pixel optical imaging lens according to claim 1, wherein: The five-element high-pixel optical imaging lens satisfies the following relationship: 1≤|f3 / f2|≤2.5; Among them, f3 is the focal length of the third lens, and f2 is the focal length of the second lens.

4. The five-element high-pixel optical imaging lens according to claim 1, wherein: The five-element high-pixel optical imaging lens satisfies the following relationship: (ET3+ET4) / (CT3+CT4)≤0.8; Wherein, ET3 is the edge thickness of the third lens, ET4 is the edge thickness of the fourth lens, CT3 is the thickness of the third lens on the optical axis, and CT4 is the thickness of the fourth lens on the optical axis.

5. The five-element high-pixel optical imaging lens according to any one of claims 1 to 4, wherein: The object-side surface and the image-side surface of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all aspherical.

Images