Optical imaging lens

Abstract

The application provides an optical imaging lens, comprising four lenses, a plurality of isolation pieces, a lens barrel; the optical imaging lens satisfies the following relationship between a half of a maximum field of view angle Semi-FOV and a maximum height L of the lens barrel: 0.2mm<TAN(Semi-FOV)*L<1.5mm; a distance EP12 between an image side surface of a first isolation piece and an object side surface of a second isolation piece along an optical axis direction, and an air interval T12 of the first lens and the second lens on the optical axis satisfy the following relationship: 1<EP12 / T12<4; an effective focal length f1 of the first lens, a distance EP01 between an object side surface of the lens barrel and the object side surface of the first isolation piece along the optical axis direction, and a central thickness CT1 of the first lens on the optical axis satisfy the following relationship: 5mm<f1*EP01 / CT1<7mm. The application solves the problem of poor imaging quality of the optical imaging lens in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging devices, and in particular, to an optical imaging lens. Background Art

[0002] With the continuous improvement of people's requirements for mobile phone camera quality, the use of a single optical imaging lens can no longer meet the needs of users. Currently, smart phone devices are equipped with multiple optical imaging lenses to meet different usage environments of users. A long-focus optical imaging lens can achieve clear shooting at a long distance and magnify the imaging picture by several times while still maintaining the clarity of the imaging picture. However, due to the relatively large diameter of the lens of the long-focus optical imaging lens, especially at the front end of the optical imaging lens, the lens shape is relatively rich, the processing difficulty is large, and the sensitivity is high, resulting in limited development of the long-focus optical imaging lens. That is to say, how to control the shape of the lens at the front end of the optical imaging lens to reduce the impact of the lens sensitivity on the imaging quality is one of the research hotspots of those skilled in the art. Summary of the Invention

[0003] The main object of the present invention is to provide an optical imaging lens to solve the problem of poor imaging quality of the optical imaging lens in the prior art.

[0004] To achieve the above object, according to one aspect of the present invention, there is provided an optical imaging lens, including: four lenses, the four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; a plurality of spacers, at least including a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; a lens barrel, the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the plurality of spacers in the receiving space; wherein, for the optical imaging lens, half of the maximum field angle Semi-FOV and the maximum height L of the lens barrel satisfy: 0.2mm < TAN(Semi-FOV)*L < 1.5mm; the distance EP12 from the image side surface of the first spacer to the object side surface of the second spacer along the optical axis direction of the optical imaging lens and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 1 < EP12 / T12 < 4; the effective focal length f1 of the first lens, the distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacer along the optical axis direction, and the central thickness CT1 of the first lens on the optical axis satisfy: 5mm < f1*EP01 / CT1 < 7mm.

[0005] According to another aspect of the present invention, there is provided an optical imaging lens, comprising: four lenses, the four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; a plurality of spacers, at least including a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; a lens barrel having a receiving space for accommodating the four lenses and the plurality of spacers in the receiving space; wherein, half of the maximum field angle of the optical imaging lens Semi-FOV and the maximum height L of the lens barrel satisfy: 0.2mm < TAN(Semi-FOV)*L < 1.5mm; the outer diameter D1m of the image side surface of the first spacer, the inner diameter d1s of the object side surface of the first spacer, and the central thickness CT1 of the first lens on the optical axis satisfy: 0.1 < (D1m - d1s) / CT1 < 1.8; the effective focal length f1 of the first lens, the distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacer along the optical axis direction, and the central thickness CT1 of the first lens on the optical axis satisfy: 5mm < f1*EP01 / CT1 < 7mm. The present application provides a four-piece optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV)*L < 1.5mm, the optical imaging lens has the characteristics of a long focal length, can capture distant objects more clearly, and thus has good magnification characteristics. However, in a long focal length optical imaging lens, the lens aperture is large, and the problem of unstable assembly is likely to occur. By controlling the effective focal length, central thickness of the first lens, the distance between the lens barrel and the first spacer, and the inner and outer diameter dimensions of the first spacer, the present application optimizes the edge thickness ratio of the first lens while ensuring the long focal length performance, reduces the forming difficulty of the first lens, enables the optical imaging lens to have a good single-component yield performance in subsequent production, improves the assembly strength of the first lens, and can also maximize the quality of the imaging light when the light passes through the first spacer and reduce the generation of stray light.

[0006] According to another aspect of the present invention, an optical imaging lens is provided, comprising: four lenses, the four lenses sequentially including a first lens to a fourth lens from the object side to the image side of the optical imaging lens; a plurality of spacers, at least including a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; a lens barrel having a receiving space for accommodating the four lenses and the plurality of spacers in the receiving space; wherein, for the optical imaging lens, half of the maximum field angle Semi-FOV and the maximum height L of the lens barrel satisfy: 0.2 mm < TAN(Semi-FOV)*L < 1.5 mm; the distance EP12 from the image side surface of the first spacer to the object side surface of the second spacer along the optical axis direction of the optical imaging lens and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 1 < EP12 / T12 < 4; the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis direction, and the central thickness CT2 of the second lens on the optical axis satisfy: -10 < f2 / (CP2 + CT2) < -6.5. The present application provides a four-piece optical imaging lens. On the premise of satisfying 0.2 mm < TAN(Semi-FOV)*L < 1.5 mm, the optical imaging lens has the characteristic of a long focal length, can capture distant objects more clearly, and thus has a good magnification characteristic. However, in a long-focal-length optical imaging lens, the lens aperture is large, and the problem of unstable assembly is likely to occur. By controlling the effective focal length, central thickness of the second lens, the distance between the first and second lenses, the distance between the first and second spacers, and the thickness of the second spacer, the edge thickness ratio of the second lens is optimized while ensuring the long-focal-length performance. The dimensions of the second lens in the optical axis direction and the direction perpendicular to the optical axis have the most reasonable range, reducing the forming difficulty of the second lens, ensuring the stability of the assembly of the optical imaging lens, and improving the product quality.

[0007] According to another aspect of the present invention, an optical imaging lens is provided, including: four lenses, the four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; a plurality of spacers, at least including a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; a lens barrel, the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the plurality of spacers in the receiving space; wherein, the half of the maximum field angle of the optical imaging lens Semi-FOV and the maximum height L of the lens barrel satisfy: 0.2mm < TAN(Semi-FOV)*L < 1.5mm; the outer diameter D1m of the image side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the maximum effective radius DT21 of the object side surface of the second lens, and the maximum effective radius DT22 of the image side surface of the second lens satisfy: 2 < (D1m + D2s) / (DT21 + DT22) < 4; the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis direction, and the central thickness CT2 of the second lens on the optical axis satisfy: -10 < f2 / (CP2 + CT2) < -6.5. The present application provides a four-piece optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV)*L < 1.5mm, the optical imaging lens has the characteristics of a long focal length, can capture distant objects more clearly, and thus has better magnification characteristics. However, in a long focal length optical imaging lens, the lens aperture is large, and it is easy to have problems such as unstable assembly. The present application optimizes the edge thickness ratio of the second lens by controlling the effective focal length, central thickness, effective radius of the second lens, and the outer diameter and thickness of the first and second spacers. The dimensions of the second lens in the optical axis direction and perpendicular to the optical axis direction have the most reasonable range, reducing the molding difficulty of the second lens, ensuring the assembly stability of the second lens, and improving the performance stability of the optical imaging lens.

[0008] Further, the combined focal length f234 of the second lens, the third lens and the fourth lens, the distance EP23 along the optical axis direction from the image side surface of the second spacer to the object side surface of the third spacer, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: -18 < f234 / (EP23 + T34) < -6.

[0009] Further, the outer diameter D1m of the image side surface of the first spacer, the inner diameter d1s of the object side surface of the first spacer, and the central thickness CT1 of the first lens on the optical axis satisfy: 0.1 < (D1m - d1s) / CT1 < 1.8.

[0010] Further, the air gap T23 between the second lens and the third lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the maximum thickness CP3 of the third spacer along the optical axis satisfy: 0.2 < T23 / (CT2 + CP3) < 2.

[0011] Further, the outer diameter D2m of the image side of the second spacer and the curvature radius R3 of the object side of the second lens satisfy: -1 < D2m / R3 < 0.5, and the outer diameter D3s of the object side of the third spacer and the curvature radius R4 of the image side of the second lens satisfy: 2 < D3s / R4 < 4.

[0012] Further, the combined focal length f23 of the second lens and the third lens, the refractive index N2 of the second lens, the refractive index N3 of the third lens, and the distance EP23 along the optical axis from the image side of the second spacer to the object side of the third spacer satisfy: -4 < f23 / (N2 + N3) / EP23 < -0.5.

[0013] Further, the curvature radius R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third spacer, the curvature radius R8 of the image side of the fourth lens, and the inner diameter d3m of the image side of the third spacer satisfy: 1 < R7 / d3s + R8 / d3m < 3.

[0014] Further, the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy: -10 < f2 / (CP2 + CT2) < -6.5.

[0015] Further, the Abbe number V2 of the second lens, the Abbe number V3 of the third lens, the distance EP23 along the optical axis from the image side of the second spacer to the object side of the third spacer, and the effective focal length f3 of the third lens satisfy: 2 < (V2 + V3)*EP23 / f3 < 6.

[0016] Further, the outer diameter D1m of the image side of the first spacer, the outer diameter D2s of the object side of the second spacer, the maximum effective radius DT21 of the object side of the second lens, and the maximum effective radius DT22 of the image side of the second lens satisfy: 2 < (D1m + D2s) / (DT21 + DT22) < 4.

[0017] Further, the effective focal length f2 of the second lens and the inner diameter d2m of the image side of the second spacer satisfy: -1.5 < f2 / d2m < -0.2, and the effective focal length f3 of the third lens and the inner diameter d3s of the object side of the third spacer satisfy: 2 < f3 / d3s < 5.5.

[0018] Further, the plurality of spacers further includes a first auxiliary spacer located between the first spacer and the second lens and at least partially contacting the image side surface of the first spacer. The air gap T12 between the first lens and the second lens on the optical axis, the maximum thickness CP1 of the first spacer in the optical axis direction, the maximum thickness CP1b of the first auxiliary spacer in the optical axis direction, and the maximum thickness CP2 of the second spacer in the optical axis direction satisfy: 1 < T12 / (CP1 + CP1b + CP2) < 10.

[0019] Further, the plurality of spacers further includes a first auxiliary spacer located between the first spacer and the second lens and at least partially contacting the image side surface of the first spacer. The effective focal length f1 of the first lens, the inner diameter d1bs of the object side surface of the first auxiliary spacer, and the outer diameter D1bs of the object side surface of the first auxiliary spacer satisfy: 0 < f1 / (d1bs + D1bs) < 1.3. The effective focal length f2 of the second lens, the inner diameter d1bm of the image side surface of the first auxiliary spacer, and the outer diameter D1bm of the image side surface of the first auxiliary spacer satisfy: -0.8 < f2 / (d1bm + D1bm) < 0.

[0020] Further, the axial distance SAG11 between the intersection point of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, and the maximum thickness CP1 of the first spacer in the optical axis direction satisfy: 0.1 < SAG11 / (T12 + CP1) < 3.

[0021] Applying the technical solution of the present invention, the optical imaging lens includes four lenses, multiple spacers, and a lens barrel. The four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; at least among the multiple spacers, there are a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the multiple spacers in the receiving space; wherein, for the half of the maximum field angle Semi-FOV of the optical imaging lens and the maximum height L of the lens barrel, the following is satisfied: 0.2mm < TAN(Semi-FOV)*L < 1.5mm; for the distance EP12 along the optical axis direction from the image side surface of the first spacer to the object side surface of the second spacer and the air gap T12 between the first lens and the second lens on the optical axis, the following is satisfied: 1 < EP12 / T12 < 4; for the effective focal length f1 of the first lens, the distance EP01 along the optical axis direction from the object side end surface of the lens barrel to the object side surface of the first spacer, and the central thickness CT1 of the first lens on the optical axis, the following is satisfied: 5mm < f1*EP01 / CT1 < 7mm.

[0022] This application provides a four-piece optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV)*L < 1.5mm, the optical imaging lens has the characteristic of long focal length, and can capture distant objects more clearly, thus having better magnification characteristics. However, in a long-focal-length optical imaging lens, the lens aperture is relatively large, resulting in a higher sensitivity of the first lens, thereby affecting the imaging quality. This application controls the effective focal length, central thickness of the first lens, the distance between the first and second lenses, and the distances between the lens barrel, the first spacer, and the second spacer, so that the first lens can stably bear against the front and rear components, and thus stabilize the imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0024] Figure 1 It shows a partial parameter schematic diagram of the optical imaging lens of an optional embodiment of the present invention;

[0025] Figure 2 It shows a schematic structural diagram of the optical imaging lens of Embodiment 1 of the present invention;

[0026] Figures 3 to 6The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of Embodiment 1 of the present invention are shown respectively.

[0027] Figure 7 A schematic diagram of the structure of the optical imaging lens according to Embodiment 2 of the present invention is shown;

[0028] Figure 8 A schematic diagram of the optical imaging lens according to Embodiment 3 of the present invention is shown;

[0029] Figure 9 A schematic diagram of the structure of the optical imaging lens according to Embodiment 4 of the present invention is shown;

[0030] Figures 10 to 13 The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of Embodiment 4 of the present invention are shown respectively.

[0031] Figure 14 A schematic diagram of the structure of the optical imaging lens of Embodiment 5 of the present invention is shown;

[0032] Figure 15 A schematic diagram of the structure of the optical imaging lens of Embodiment Six of the present invention is shown;

[0033] Figure 16 A schematic diagram of the structure of the optical imaging lens of Embodiment 7 of the present invention is shown;

[0034] Figures 17 to 20 The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of Embodiment 7 of the present invention are shown respectively.

[0035] Figure 21 A schematic diagram of the structure of the optical imaging lens of Embodiment 8 of the present invention is shown;

[0036] Figure 22 A schematic diagram of the structure of the optical imaging lens of Embodiment 9 of the present invention is shown;

[0037] Figure 23 The changes in MTF-related parameters of an optical imaging lens according to an optional embodiment of the present invention after the first micro-drop test are shown.

[0038] Figure 24 It shows Figure 23 The changes in MTF-related parameters of the optical imaging lens after the second micro-drop test.

[0039] The above figures include the following reference numerals:

[0040] E1, First lens; S1, Object side of the first lens; S2, Image side of the first lens; P1, First isolator; P1b, First auxiliary isolator; P1c, First auxiliary component; E2, Second lens; S3, Object side of the second lens; S4, Image side of the second lens; P2, Second isolator; E3, Third lens; S5, Object side of the third lens; S6, Image side of the third lens; P3, Third isolator; E4, Fourth lens; S7, Object side of the fourth lens; S8, Image side of the fourth lens. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0043] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0044] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second or third lens.

[0045] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0046] In this text, 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 surface of each lens closer to the object side is the object side surface of the lens, and the surface of each lens closer to the image side is called the image side surface of the lens. 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 concavity and convexity are judged by the positive and negative values of the R value (R refers to the radius of curvature of the paraxial region, usually the R value on the lens database (lens data) in optical software). Taking the object side surface as an example, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; taking the image side surface as an example, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0047] In order to solve the problem of poor imaging quality of optical imaging lenses in the prior art, the present invention provides an optical imaging lens.

[0048] The first embodiment

[0049] As Figures 1 to 24 shown, the optical imaging lens includes four lenses, multiple spacers, and a lens barrel. The four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; at least among the multiple spacers, there is a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and multiple spacers in the receiving space; wherein, half of the maximum field angle of the optical imaging lens Semi-FOV and the maximum height L of the lens barrel satisfy: 0.2mm < TAN(Semi-FOV)*L < 1.5mm; the distance EP12 along the optical axis direction from the image side surface of the first spacer to the object side surface of the second spacer and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 1 < EP12 / T12 < 4; the effective focal length f1 of the first lens, the distance EP01 along the optical axis direction from the object side end surface of the lens barrel to the object side surface of the first spacer, and the central thickness CT1 of the first lens on the optical axis satisfy: 5mm < f1*EP01 / CT1 < 7mm.

[0050] The present application provides a four-piece optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV)*L < 1.5mm, the optical imaging lens has the characteristics of a long focal length, can capture distant objects more clearly, and thus has good magnification characteristics. However, in a long-focal-length optical imaging lens, the front-end lens has a large aperture and high sensitivity, which has a great impact on the imaging quality of the optical imaging lens. By controlling the effective focal length, central thickness of the first lens, the distance between the first and second lenses, and the distances between the lens barrel, the first spacer, and the second spacer, while ensuring the long-focal-length performance, the edge thickness ratio of the first lens is optimized, the forming difficulty and sensitivity of the first lens are reduced, so that the first lens can stably abut against the front and rear components, and further stabilize the imaging quality.

[0051] Preferably, 0.5mm < TAN(Semi-FOV)*L < 1.3mm.

[0052] Preferably, 1.2 < EP12 / T12 < 3.8.

[0053] Preferably, 5.2mm < f1*EP01 / CT1 < 6.8mm.

[0054] See the appendix Figure 23 and Figure 24 , the table in the figure shows the change amounts of the lens MTF (modulation transfer function) related parameters before and after two rounds (1st and 2nd shown in the table) of micro-drop tests of the optical imaging lens of the present application. Specifically, the test example can be carried out on a mobile phone micro-drop tester, and the test content can be set as follows: the drop height is 10 cm, the number of drops in each round is 500 times for each of the six sides and 5000 times for the front and back sides, totaling 13000 times; the total number of drops in two rounds of tests is 26000 times. Analyze Figure 23 and Figure 24As can be seen from the data in the table shown, before and after two rounds of tests of the optical imaging lens of the present application, the change amount of the lens MTF is within the required threshold range of 15, meeting the design requirements. Therefore, it can also be seen that on the premise that the half of the maximum field angle of view of the optical imaging lens of the present application, Semi-FOV, and the maximum height L of the lens barrel satisfy 0.2mm < TAN(Semi-FOV) * L < 1.5mm, by controlling the distance EP12 from the image side of the first spacer to the object side of the second spacer along the optical axis direction of the optical imaging lens, and the air gap T12 between the first lens and the second lens on the optical axis satisfy 1 < EP12 / T12 < 4, and the effective focal length f1 of the first lens, the distance EP01 from the object-side end face of the lens barrel to the object side of the first spacer along the optical axis direction, and the central thickness CT1 of the first lens on the optical axis satisfy 5mm < f1 * EP01 / CT1 < 7mm, the edge thickness ratio of the first lens is optimized, the molding difficulty of the first lens is reduced, thereby reducing the lens sensitivity, improving the imaging quality of the optical imaging lens, and at the same time improving the assembly strength of the first lens, which has a great promoting effect on the reliability performance of the lens assembly. In this embodiment, the combined focal length f234 of the second lens, the third lens and the fourth lens, the distance EP23 from the image side of the second spacer to the object side of the third spacer along the optical axis direction, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy: -18 < f234 / (EP23 + T34) < -6. By limiting f234 / (EP23 + T34) within a reasonable range, it can be ensured that the light rays diverging through the second lens, the third lens and the fourth lens can maximize the quality of the imaging light rays when passing through the second spacer, reduce the generation of stray light rays, and at the same time control the air gap between the third lens and the fourth lens, which can optimize the optical sensitivity of the optical imaging lens and improve the performance yield. Preferably, -17.5 < f234 / (EP23 + T34) < -6.2.

[0055] In this embodiment, the outer diameter D1m of the image side of the first spacer, the inner diameter d1s of the object side of the first spacer, and the central thickness CT1 of the first lens on the optical axis satisfy: 0.1 < (D1m - d1s) / CT1 < 1.8. By limiting (D1m - d1s) / CT1 within a reasonable range and controlling the inner diameter of the first spacer, it can be ensured that the light rays passing through the first spacer can maximize the quality of the imaging light rays and reduce the generation of stray light rays; by controlling the outer diameter of the first spacer, the outer diameter of the first lens can be controlled, and at the same time by controlling the central thickness of the first lens, the molding difficulty of the first lens can be effectively reduced, so that the optical imaging lens has a better single-component yield performance in subsequent production. Preferably, 0.2 < (D1m - d1s) / CT1 < 1.5.

[0056] In this embodiment, the air gap T23 between the second lens and the third lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the maximum thickness CP3 of the third spacer along the optical axis direction satisfy: 0.2 < T23 / (CT2 + CP3) < 2. By restricting T23 / (CT2 + CP3) within a reasonable range, the thicknesses of the second and third spacers can be reasonably selected, reducing the production cost of the optical imaging lens. Meanwhile, it is beneficial to improve the assembly stability. By controlling the central thickness of the second lens on the optical axis, the molding difficulty of the second lens can be reduced. Preferably, 0.4 < T23 / (CT2 + CP3) < 1.8.

[0057] In this embodiment, the outer diameter D2m of the image side of the second spacer and the curvature radius R3 of the object side of the second lens satisfy: -1 < D2m / R3 < 0.5, and the outer diameter D3s of the object side of the third spacer and the curvature radius R4 of the image side of the second lens satisfy: 2 < D3s / R4 < 4. By restricting D2m / R3 and D3s / R4 within a reasonable range, the ratio of the outer diameter and the curvature radius of the second lens can be controlled while ensuring the imaging quality, which is beneficial to lens molding. Preferably, -0.8 < D2m / R3 < 0.1, 2.1 < D3s / R4 < 3.8.

[0058] In this embodiment, the combined focal length f23 of the second lens and the third lens, the refractive index N2 of the second lens, the refractive index N3 of the third lens, and the distance EP23 along the optical axis direction from the image side of the second spacer to the object side of the third spacer satisfy: -4 < f23 / (N2 + N3) / EP23 < -0.5. By restricting f23 / (N2 + N3) / EP23 within a reasonable range, when the light rays diverged by the second lens and the third lens pass through the second spacer and the third spacer, the quality of the imaging light rays can be maximally ensured, the generation of stray light rays can be reduced, and thus the quality of the optical imaging lens can be improved. Preferably, -3.8 < f23 / (N2 + N3) / EP23 < -1.1.

[0059] In this embodiment, the curvature radius R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third spacer, the curvature radius R8 of the image side of the fourth lens, and the inner diameter d3m of the image side of the third spacer satisfy: 1 < R7 / d3s + R8 / d3m < 3. By restricting R7 / d3s + R8 / d3m within a reasonable range, the ratio of the object side and image side curvature radii of the fourth lens can be controlled while ensuring the imaging quality, which is beneficial to the molding of the fourth lens. Preferably, 1.2 < R7 / d3s + R8 / d3m < 2.8.

[0060] In this embodiment, the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis direction, and the central thickness CT2 of the second lens on the optical axis satisfy: -10 < f2 / (CP2 + CT2) < -6.5. By restricting f2 / (CP2 + CT2) within a reasonable range and adjusting the diopter of the second lens, the light quality passing through the second lens can be ensured; at the same time, the dimensions of the second lens in the optical axis direction and the direction perpendicular to the optical axis have the most reasonable range, ensuring the stability of the assembly of the optical imaging lens and improving the product quality. Preferably, -9.8 < f2 / (CP2 + CT2) < -6.8.

[0061] In this embodiment, the Abbe number V2 of the second lens, the Abbe number V3 of the third lens, the distance EP23 along the optical axis from the image side of the second spacer to the object side of the third spacer, and the effective focal length f3 of the third lens satisfy: 2 < (V2 + V3)*EP23 / f3 < 6. By restricting (V2 + V3)*EP23 / f3 within a reasonable range, the balance of refractive index and dispersion among the second lens, the third lens, and the distance between the second and third lenses can be ensured. Furthermore, on the premise of meeting the structural stability, the imaging quality of the optical imaging lens is optimal, improving the overall imaging quality. Preferably, 2.2 < (V2 + V3)*EP23 / f3 < 5.8.

[0062] In this embodiment, the outer diameter D1m of the image side of the first spacer, the outer diameter D2s of the object side of the second spacer, the maximum effective radius DT21 of the object side of the second lens, and the maximum effective radius DT22 of the image side of the second lens satisfy: 2 < (D1m + D2s) / (DT21 + DT22) < 4. By restricting (D1m + D2s) / (DT21 + DT22) within a reasonable range, the effective diameter of the second lens and the dimensions of the front and rear spacers are controlled to ensure the assembly stability of the second lens and improve the performance stability of the optical imaging lens. Preferably, 2.2 < (D1m + D2s) / (DT21 + DT22) < 3.8.

[0063] In this embodiment, the effective focal length f2 of the second lens and the inner diameter d2m of the image side of the second spacer satisfy: -1.5 < f2 / d2m < -0.2, and the effective focal length f3 of the third lens and the inner diameter d3s of the object side of the third spacer satisfy: 2 < f3 / d3s < 5.5. By restricting f2 / d2m and f3 / d3s within a reasonable range, the light passing through the third lens can be maximally prevented from being transmitted to the non-imaging mechanism position of the fourth lens, improving the imaging quality of the optical imaging lens and the reliability of the product. Preferably, -1.3 < f2 / d2m < -0.4, 2.1 < f3 / d3s < 5.4.

[0064] In this embodiment, the plurality of spacers further includes a first auxiliary spacer located between the first spacer and the second lens and at least partially contacting the image side surface of the first spacer. The air gap T12 between the first lens and the second lens on the optical axis, the maximum thickness CP1 of the first spacer in the optical axis direction, the maximum thickness CP1b of the first auxiliary spacer in the optical axis direction, and the maximum thickness CP2 of the second spacer in the optical axis direction satisfy: 1 < T12 / (CP1 + CP1b + CP2) < 10. By restricting T12 / (CP1 + CP1b + CP2) within a reasonable range and controlling the thicknesses of the first spacer, the second spacer, and the first auxiliary spacer, the assembly stability can be maximally improved and the performance of the optical imaging lens can be enhanced under the molding conditions of the spacers. Preferably, 1.1 < T12 / (CP1 + CP1b + CP2) < 9.8.

[0065] In this embodiment, the plurality of spacers further includes a first auxiliary spacer located between the first spacer and the second lens and at least partially contacting the image side surface of the first spacer. The effective focal length f1 of the first lens, the inner diameter d1bs of the object side surface of the first auxiliary spacer, and the outer diameter D1bs of the object side surface of the first auxiliary spacer satisfy: 0 < f1 / (d1bs + D1bs) < 1.3. The effective focal length f2 of the second lens, the inner diameter d1bm of the image side surface of the first auxiliary spacer, and the outer diameter D1bm of the image side surface of the first auxiliary spacer satisfy: -0.8 < f2 / (d1bm + D1bm) < 0. By restricting f1 / (d1bs + D1bs) and f2 / (d1bm + D1bm) within reasonable ranges, based on ensuring the optical quality of the light passing through the first lens, it can be ensured that the light diverging from the second lens can maximize the quality of the imaging light when passing through the second spacer, reduce the generation of stray light, and thus improve the quality of the optical imaging lens. Preferably, 0.2 < f1 / (d1bs + D1bs) < 1.1, -0.5 < f2 / (d1bm + D1bm) < -0.1.

[0066] In this embodiment, the axial distance SAG11 between the intersection point of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, and the maximum thickness CP1 of the first spacer in the optical axis direction satisfy: 0.1 < SAG11 / (T12 + CP1) < 3. By restricting SAG11 / (T12 + CP1) within a reasonable range, the thickness ratio of the edge of the first lens and the first spacer is ensured, the bearing stability is improved, and the processing and molding difficulty of the first lens and the first spacer is reduced. Preferably, 0.3 < SAG11 / (T12 + CP1) < 2.8.

[0067] Second Embodiment

[0068] As shown Figures 1 to 24 in the figure, the optical imaging lens includes four lenses, a plurality of spacers, and a lens barrel. The four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; at least a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens are included in the plurality of spacers; the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the plurality of spacers in the receiving space; wherein, for the semi-field angle Semi-FOV of half of the maximum field angle of the optical imaging lens and the maximum height L of the lens barrel, the following is satisfied: 0.2mm < TAN(Semi-FOV) * L < 1.5mm; for the outer diameter D1m of the image side surface of the first spacer, the inner diameter d1s of the object side surface of the first spacer, and the central thickness CT1 of the first lens on the optical axis, the following is satisfied: 0.1 < (D1m - d1s) / CT1 < 1.8; for the effective focal length f1 of the first lens, the distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacer along the optical axis, and the central thickness CT1 of the first lens on the optical axis, the following is satisfied: 5mm < f1 * EP01 / CT1 < 7mm.

[0069] The present application provides a four-piece optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV) * L < 1.5mm, the optical imaging lens has the characteristic of a long focal length, can capture distant objects more clearly, and thus has a good magnification characteristic. However, in a long-focal-length optical imaging lens, the lens aperture is large, and it is easy to have a problem of unstable assembly. By controlling the effective focal length, central thickness of the first lens, the distance between the lens barrel and the first spacer, and the inner and outer diameter dimensions of the first spacer, the edge thickness ratio of the first lens is optimized while ensuring the long-focal-length performance, the forming difficulty of the first lens is reduced, the single-component yield performance of the optical imaging lens is good in subsequent production, the assembly strength of the first lens is improved, and the quality of the imaging light when the light passes through the first spacer can be guaranteed to the maximum extent, and the generation of stray light is reduced.

[0070] Preferably, 0.5mm < TAN(Semi-FOV) * L < 1.3mm.

[0071] Preferably, 0.2 < (D1m - d1s) / CT1 < 1.5.

[0072] Preferably, 5.2mm < f1 * EP01 / CT1 < 6.8mm.

[0073] It should be noted that this embodiment may also include other conditional expressions in the first embodiment, which will not be elaborated here one by one.

[0074] The Third Embodiment

[0075] As Figures 1 to 24 shown, the optical imaging lens includes four lenses, a plurality of spacers, and a lens barrel. The four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; at least among the plurality of spacers, there is a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the plurality of spacers in the receiving space; wherein, for the half of the maximum field angle Semi-FOV of the optical imaging lens and the maximum height L of the lens barrel, it satisfies: 0.2mm < TAN(Semi-FOV) * L < 1.5mm; for the distance EP12 from the image side surface of the first spacer to the object side surface of the second spacer along the optical axis direction of the optical imaging lens and the air gap T12 between the first lens and the second lens on the optical axis, it satisfies: 1 < EP12 / T12 < 4; for the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis direction, and the central thickness CT2 of the second lens on the optical axis, it satisfies: -10 < f2 / (CP2 + CT2) < -6.5.

[0076] This application provides a four-lens optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV) * L < 1.5mm, the optical imaging lens has the characteristics of a long focal length, can capture distant objects more clearly, and thus has good magnification characteristics. However, in a long-focal-length optical imaging lens, the lens aperture is relatively large, and it is easy to have problems with unstable assembly. By controlling the effective focal length, central thickness of the second lens, the distance between the first and second lenses, the distance between the first and second spacers, and the thickness of the second spacer, while ensuring the long-focal-length performance, the edge thickness ratio of the second lens is optimized. The dimensions of the second lens in the optical axis direction and the direction perpendicular to the optical axis have the most reasonable range, reducing the molding difficulty of the second lens, ensuring the stability of the assembly of the optical imaging lens, and improving the product quality.

[0077] Preferably, 0.5mm < TAN(Semi-FOV) * L < 1.3mm.

[0078] Preferably, 1.2 < EP12 / T12 < 3.8.

[0079] Preferably, -9.8 < f2 / (CP2 + CT2) < -6.8.

[0080] It should be noted that this embodiment may also include other conditional expressions in the first embodiment, which will not be elaborated here one by one.

[0081] Fourth Embodiment

[0082] As Figures 1 to 24 shown, the optical imaging lens includes four lenses, multiple spacers, and a lens barrel. The four lenses sequentially include a first lens to a fourth lens from the object side to the image side of the optical imaging lens; at least among the multiple spacers, there are a first spacer located between the first lens and the second lens and at least partially contacting the image side surface of the first lens, a second spacer located between the second lens and the third lens and at least partially contacting the image side surface of the second lens, and a third spacer located between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; the lens barrel has a receiving space, and the lens barrel is used to accommodate the four lenses and the multiple spacers in the receiving space; wherein, between half of the maximum field angle Semi-FOV of the optical imaging lens and the maximum height L of the lens barrel, it satisfies: 0.2mm < TAN(Semi-FOV) * L < 1.5mm; between the outer diameter D1m of the image side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the maximum effective radius DT21 of the object side surface of the second lens, and the maximum effective radius DT22 of the image side surface of the second lens, it satisfies: 2 < (D1m + D2s) / (DT21 + DT22) < 4; between the effective focal length f2 of the second lens, the maximum thickness CP2 of the second spacer along the optical axis direction, and the central thickness CT2 of the second lens on the optical axis, it satisfies: -10 < f2 / (CP2 + CT2) < -6.5.

[0083] This application provides a four-lens optical imaging lens. On the premise of satisfying 0.2mm < TAN(Semi-FOV) * L < 1.5mm, the optical imaging lens has the characteristics of a long focal length and can capture distant objects more clearly, thus having better magnification characteristics. However, in a long-focal-length optical imaging lens, the lens aperture is relatively large, and it is easy to have problems such as unstable assembly. By controlling the effective focal length, central thickness, effective radius of the second lens, and the outer diameter and thickness of the first and second spacers, while ensuring the long-focal-length performance, the edge thickness ratio of the second lens is optimized. The dimensions of the second lens in the optical axis direction and the direction perpendicular to the optical axis have the most reasonable range, reducing the molding difficulty of the second lens, ensuring the assembly stability of the second lens, and improving the performance stability of the optical imaging lens.

[0084] Preferably, 0.5mm < TAN(Semi-FOV) * L < 1.3mm.

[0085] Preferably, 2.2 < (D1m + D2s) / (DT21 + DT22) < 3.8.

[0086] Preferably, -9.8 <f2 / (CP2+CT2)<-6.8。

[0087] It should be noted that this embodiment may also include other conditional expressions from the first embodiment, which will not be elaborated here.

[0088] Optionally, the aforementioned optical imaging lens may further include a filter for correcting color aberrations and / or a protective glass for protecting the photosensitive element located on the imaging surface. The optical imaging lens in this application may employ multiple lenses, such as the four lenses described above. By rationally allocating the effective focal length, surface shape, center thickness of each lens, and on-axis distance between lenses, the aperture of the optical imaging lens can be effectively increased, the lens sensitivity reduced, and the lens's manufacturability improved, making the optical imaging lens more suitable for manufacturing and processing and applicable to portable electronic devices such as smartphones.

[0089] Figure 1 A schematic diagram of the structure of an optical imaging lens of this application is shown. Figure 1 The accompanying drawings also indicate parameters such as d1s, d3m, and D2m to provide a clear and intuitive understanding of their meaning. To facilitate the demonstration of the optical imaging lens structure and specific surface features, these parameters will not be shown in the accompanying drawings when describing specific embodiments.

[0090] Where Dis refers to the outer diameter of the object side surface of the i-th isolator, dis refers to the inner diameter of the object side surface of the i-th isolator, Dim refers to the outer diameter of the image side surface of the i-th isolator, dim refers to the inner diameter of the image side surface of the i-th isolator, CPi refers to the maximum thickness of the i-th isolator, which is also the maximum distance along the optical axis from the object side surface to the image side surface of the i-th isolator, and EPij refers to the distance along the optical axis between the image side surface of the i-th isolator and the object side surface of the j-th isolator, where i and j are both positive integers greater than or equal to 1. d0s is the inner diameter of the object side end face of the lens barrel, and D0m is the outer diameter of the image side end face of the lens barrel. The maximum height L of the lens barrel P0 refers to the maximum distance along the optical axis from the object side end face to the image side end face of the lens barrel P0.

[0091] The following description, with reference to the accompanying drawings, further illustrates examples of specific surface shapes and parameters of optical imaging lenses applicable to the above embodiments.

[0092] It should be noted that any one of the following embodiments, from Embodiment 1 to Embodiment 9, is applicable to all implementation methods of this application.

[0093] Example 1

[0094] like Figures 2 to 6 The image shows an optical imaging lens according to an embodiment of this application.

[0095] like Figure 2 As shown, the optical imaging lens, from the object side to the image side, includes, in sequence, a first lens E1, a first spacer P1, a first auxiliary spacer P1b, a first auxiliary spacer P1c, a second lens E2, a second spacer P2, a third lens E3, a third spacer P3, and a fourth lens E4. Three spacers are placed between the first and second lenses, ensuring stable assembly while also providing a more reasonable edge thickness ratio between the first and second lenses, reducing the difficulty of lens manufacturing. Furthermore, the image-side port diameter of the lens barrel is smaller than the object-side port diameter, allowing the lenses and spacers to be assembled from the object side of the lens barrel.

[0096] like Figure 2 As shown, the object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, and the image side of the fourth lens is S8.

[0097] Table 1 shows the basic structural parameters of the optical imaging lens in Embodiment 1, where the units for radius of curvature, thickness / distance, and effective focal length are all millimeters (mm).

[0098]

[0099]

[0100] Table 1

[0101] In this embodiment, the first to fourth lenses are all aspherical lenses, and the surface shape of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0102]

[0103] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; 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 i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 that can be used for each aspherical mirror in this embodiment.

[0104] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.6716E-02 -3.0561E-03 -1.3863E-03 -7.9351E-04 -1.3518E-04 -7.1486E-05 -1.3196E-05 S2 1.5549E-01 -2.2413E-02 2.7563E-03 -2.2708E-03 6.6851E-04 -3.0124E-04 9.2253E-05 S3 1.2781E-02 8.4685E-03 3.6033E-03 -2.8497E-03 1.3906E-03 -6.1365E-04 1.9720E-04 S4 -4.6191E-02 1.3433E-02 -1.3569E-03 1.3724E-03 -2.6814E-04 8.7289E-05 -7.9792E-05 S5 1.0063E-02 3.3932E-03 -1.1070E-02 4.9974E-03 -1.8446E-03 6.4437E-04 -2.2645E-04 S6 2.9872E-02 2.4720E-02 -1.9446E-02 7.2811E-03 -3.2406E-03 1.2842E-03 -4.9744E-04 S7 -2.6106E-01 2.5428E-02 -1.5087E-02 5.9883E-03 -2.9936E-03 1.3016E-03 -5.4062E-04 S8 -6.9014E-02 1.1188E-02 -1.5109E-03 6.0268E-04 -2.2474E-04 8.8448E-05 -2.6578E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.2422E-06 -2.9010E-06 5.4958E-07 3.0636E-08 4.4208E-07 0.0000E+00 0.0000E+00 S2 -1.0225E-05 -7.4385E-06 7.8696E-06 -2.3144E-06 2.1865E-07 0.0000E+00 0.0000E+00 S3 -2.0350E-05 -3.5822E-05 3.7525E-05 -2.0166E-05 5.9410E-06 -7.1843E-07 0.0000E+00 S4 1.0226E-04 -9.5898E-05 4.5766E-05 -7.1194E-06 -2.7333E-06 8.7580E-07 0.0000E+00 S5 1.0197E-04 -6.7533E-05 2.2249E-05 3.8538E-06 -5.7234E-06 1.7250E-06 0.0000E+00 S6 1.7381E-04 -7.5021E-05 2.8368E-05 -6.2424E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.9815E-04 -7.5990E-05 2.8757E-05 -7.7970E-06 1.0017E-06 0.0000E+00 0.0000E+00 S8 1.3623E-06 4.0980E-07 -3.5107E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0105] Table 2

[0106] Figure 3The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deflection of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 4 The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 5 The distortion curve of the optical imaging lens of Embodiment 1 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 6 The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the optical imaging lens.

[0107] according to Figures 3 to 6 As can be seen, the optical imaging lens given in Example 1 can achieve good imaging quality.

[0108] Example 2

[0109] The difference from Example 1 is that the parameters of the lens barrel P0 and the spacer are different.

[0110] like Figure 7 The image shows an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 are omitted.

[0111] In Embodiment 2, the curvature radius, center thickness, and other parameters of the first to fourth lenses of the optical imaging lens are the same as those in Embodiment 1, as shown in Tables 1 and 2. However, at least some parameters are different, such as the lens barrel P0, the thickness of the spacer, the inner diameter and outer diameter of the spacer, and the distance between the spacers. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 3 to 6 As shown.

[0112] like Figure 7 As shown, there are only two spacers between the first and second lenses, which reduces the difficulty of assembly while ensuring stable assembly. The object-side port diameter of the lens barrel is smaller than the image-side port diameter, so that the lens and spacers are assembled from the image side of the lens barrel.

[0113] Example 3

[0114] The difference from Example 1 is that the parameters of the lens barrel P0 and the spacer are different.

[0115] like Figure 8 The image shows an optical imaging lens according to Embodiment 3 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 are omitted.

[0116] In Embodiment 3, the curvature radius, center thickness, and other parameters of the first to fourth lenses of the optical imaging lens, as well as the spacing between the lenses, are the same as in Embodiment 1, as shown in Tables 1 and 2. However, at least some parameters, such as the lens barrel P0, the thickness of the spacer, the inner diameter and outer diameter of the spacer, and the distance between the spacers, are different. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 3 to 6 As shown.

[0117] like Figure 8 As shown, there are only two spacers between the first and second lenses, which reduces the difficulty of assembly while ensuring assembly stability.

[0118] Example 4

[0119] The difference from Example 1 is that the parameters of the lens barrel P0, the spacer, and the lens are different.

[0120] like Figures 9 to 13 The image shows an optical imaging lens according to Embodiment 4 of this application.

[0121] like Figure 9 As shown, the optical imaging lens, from the object side to the image side, includes, in sequence, a first lens E1, a first spacer P1, a first auxiliary spacer P1b, a first auxiliary spacer P1c, a second lens E2, a second spacer P2, a third lens E3, a third spacer P3, and a fourth lens E4. Three spacers are placed between the first and second lenses, ensuring stable assembly while also providing a more reasonable edge thickness ratio between the first and second lenses, reducing the difficulty of lens manufacturing. Furthermore, the image-side port diameter of the lens barrel is smaller than the object-side port diameter, allowing the lenses and spacers to be assembled from the object side of the lens barrel.

[0122] like Figure 9 As shown, the object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, and the image side of the fourth lens is S8.

[0123] Table 3 shows the basic structural parameters of the optical imaging lens in Embodiment 4, where the units for radius of curvature, thickness / distance, and effective focal length are all millimeters (mm).

[0124]

[0125] Table 3

[0126] Table 3 also shows the object side surface S15, the image side surface S16, and the imaging surface S17 of the filter.

[0127] In this embodiment, the first to fourth lenses are all aspherical lenses, and the surface shape of each aspherical lens can be defined using, but is not limited to, formula (1) in Embodiment 1. Table 4 below shows the higher-order coefficients that can be used for each aspherical lens in this embodiment.

[0128] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.8633E-02 -5.3699E-03 -3.4373E-03 -2.3189E-03 -6.7181E-04 -3.7116E-04 -1.0562E-04 S2 5.5328E-03 -5.6877E-02 1.9961E-02 -7.4721E-03 6.0614E-04 -1.1937E-03 -1.5458E-03 S3 -1.6240E-01 1.5973E-02 1.3445E-02 5.7738E-03 2.7849E-03 -2.3590E-04 -1.5907E-03 S4 -5.4152E-03 4.4529E-02 -3.1649E-03 1.2631E-03 9.8778E-04 -6.4169E-04 4.4762E-04 S5 8.4657E-03 5.6351E-03 -2.4873E-03 1.5849E-03 -1.9149E-04 9.5444E-05 4.0134E-05 S6 8.8394E-02 -3.2008E-03 -1.3059E-03 9.2843E-04 1.4334E-04 -9.6955E-05 7.7171E-05 S7 -2.5631E-01 -3.4210E-03 1.9843E-03 -8.7066E-04 9.9956E-04 -3.9945E-04 1.3588E-04 S8 -1.1019E-02 -9.0525E-03 2.6694E-03 -7.9450E-04 5.4004E-04 -1.8349E-04 5.5664E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.6994E-05 -2.9714E-06 3.2109E-06 -5.1258E-06 -5.4594E-08 5.3109E-07 1.2292E-06 S2 -4.0136E-04 -1.1461E-04 -1.0700E-04 -1.2133E-04 3.5697E-05 2.8302E-05 -3.9626E-06 S3 -1.2599E-03 -6.4589E-04 -3.0840E-04 -2.4145E-04 -6.9095E-05 0.0000E+00 0.0000E+00 S4 -7.0765E-05 4.5206E-05 -3.9509E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.3444E-04 -3.7843E-05 -2.4444E-05 -6.0050E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 7.0727E-05 -3.6582E-05 -1.0929E-05 -2.1122E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.9233E-05 -2.5379E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 5.8033E-06 -6.3862E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0129] Table 4

[0130] Figure 10 The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deflection of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 11 The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12 The distortion curve of the optical imaging lens of Embodiment 4 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 13 The magnification chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the optical imaging lens.

[0131] according to Figures 10 to 13 It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0132] Example 5

[0133] The difference from Example 4 is that the parameters of the lens barrel P0 and the spacer are different.

[0134] like Figure 14 The image shows an optical imaging lens according to Embodiment 5 of this application. For the sake of brevity, descriptions similar to those in Embodiment 4 will be omitted.

[0135] In Embodiment 5 and Embodiment 4, the first to fourth lenses of the optical imaging lens have the same parameters such as radius of curvature, center thickness, and spacing between them, as shown in Tables 3 and 4. However, at least some parameters differ, including the lens barrel P0, the thickness of the spacer, the inner and outer diameters of the spacer, and the distance between the spacers. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 10 to 13 As shown.

[0136] like Figure 14 As shown, there are only two spacers between the first and second lenses, which reduces the difficulty of assembly while ensuring assembly stability. The object-side port diameter of the lens barrel is smaller than the image-side port diameter, allowing the lenses and spacers to be assembled from the image side of the lens barrel.

[0137] Example 6

[0138] The difference from Example 4 is that the parameters of the lens barrel P0 and the spacer are different.

[0139] like Figure 15 The image shows an optical imaging lens according to Embodiment Six of this application. For the sake of brevity, descriptions similar to those in Embodiment Four are omitted.

[0140] In Embodiment Six and Embodiment Four, the first to fourth lens elements have the same radius of curvature, center thickness, and other parameters, as well as the spacing between the lens elements, as shown in Tables 3 and 4. However, at least some parameters differ, such as the lens barrel P0, the thickness of the spacer, the inner diameter and outer diameter of the spacer, and the distance between the spacers. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 10 to 13 As shown.

[0141] like Figure 15 As shown, there are only two spacers between the first and second lenses, which reduces the difficulty of assembly while ensuring assembly stability.

[0142] Example 7

[0143] The difference from Example 1 is that the parameters of the lens barrel P0, the spacer, and the lens are different.

[0144] like Figures 16 to 20 The image shows an optical imaging lens according to Embodiment Seven of this application.

[0145] like Figure 16 As shown, the optical imaging lens, from the object side to the image side, includes, in sequence, a first lens E1, a first spacer P1, a first auxiliary spacer P1b, a second lens E2, a second spacer P2, a third lens E3, a third spacer P3, and a fourth lens E4. Two spacers are placed between the first and second lenses, ensuring stable assembly while also providing a more reasonable edge thickness ratio between the first and second lenses, reducing the difficulty of lens manufacturing. Furthermore, the image-side port diameter of the lens barrel is smaller than the object-side port diameter, allowing the lenses and spacers to be assembled from the object side of the lens barrel.

[0146] like Figure 16 As shown, the object side of the first lens is S1, the image side of the first lens is S2, the object side of the second lens is S3, the image side of the second lens is S4, the object side of the third lens is S5, the image side of the third lens is S6, the object side of the fourth lens is S7, and the image side of the fourth lens is S8.

[0147] Table 5 shows the basic structural parameters of the optical imaging lens in Embodiment 7, where the units for radius of curvature, thickness / distance, and effective focal length are all millimeters (mm).

[0148] Face number Surface type radius of curvature thickness Refractive index Abbe number Conic coefficient OBJ spherical endless endless S1 aspherical 3.4632 1.4358 1.55 56.14 -0.1951 S2 aspherical -5.6224 0.4366 -1.9914 S3 aspherical -5.9607 0.4300 1.58 31.06 -6.3388 S4 aspherical 1.7089 0.3350 -3.2363 S5 aspherical 3.5320 0.4981 1.64 24.50 -0.5660 S6 aspherical 12.2345 0.0748 52.5299 S7 aspherical 2.7519 0.4912 1.54 55.71 0.8249 S8(STO) aspherical 4.4596 0.5985 0.9465

[0149] Table 5

[0150] In this embodiment, the first to fourth lenses are all aspherical lenses, and the surface shape of each aspherical lens can be defined using, but is not limited to, formula (1) in Embodiment 1. Table 6 below shows the higher-order coefficients that can be used for each aspherical lens in this embodiment.

[0151] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.6953E-03 -4.4823E-04 1.7724E-04 1.6175E-04 -3.4677E-05 -5.2598E-06 -9.3074E-06 S2 1.7222E-01 -1.7368E-02 3.7249E-03 -7.4799E-04 3.4552E-05 -3.6100E-05 2.3117E-05 S3 6.0027E-02 7.3147E-03 -3.2483E-03 7.1354E-04 -2.5964E-04 3.8781E-05 8.7646E-05 S4 -1.8477E-02 1.6181E-02 -4.4267E-03 7.7026E-05 2.8767E-04 -1.4896E-04 2.7607E-04 S5 -1.4200E-02 6.9286E-03 1.4153E-03 -9.9434E-04 6.4499E-04 -3.5014E-04 2.5760E-04 S6 3.4012E-02 3.1416E-03 2.4281E-03 -1.0863E-03 5.3974E-04 -4.7583E-04 2.3556E-04 S7 -1.0604E-01 5.0780E-04 5.8318E-04 -7.8089E-04 2.9758E-04 -2.5036E-04 1.8569E-04 S8 -1.9457E-02 -1.2776E-03 2.8648E-05 -1.7001E-05 -4.0164E-05 1.9604E-05 -4.8912E-08 Face number A18 A20 A22 A24 A26 A28 A30 S1 2.6541E-06 -1.6103E-06 1.0307E-06 -6.9459E-07 7.0749E-07 -2.6763E-07 3.1535E-08 S2 -1.8811E-06 -5.3754E-07 1.1580E-06 -6.7564E-07 2.2015E-07 -5.3241E-08 5.9732E-09 S3 -6.1995E-05 2.3607E-05 -7.8515E-06 1.5148E-06 1.6016E-07 -1.1596E-07 1.2877E-08 S4 -9.2833E-05 -1.7699E-05 -7.1653E-07 4.9888E-06 1.3460E-07 -5.0286E-07 6.7009E-08 S5 -5.9562E-05 -4.8144E-05 1.0978E-05 6.8310E-06 -9.0662E-07 -6.2873E-07 1.1466E-07 S6 -6.2834E-05 -1.0723E-05 1.1985E-05 1.4914E-06 -1.2535E-06 -2.2457E-07 8.6588E-08 S7 -3.4500E-05 6.8636E-06 3.1164E-06 -4.6725E-06 -9.5883E-07 1.2027E-06 -1.9204E-07 S8 9.1269E-06 -1.5332E-06 -9.0584E-08 -1.4857E-06 7.9098E-07 -1.3372E-07 6.6737E-09

[0152] Table 6

[0153] Figure 17 The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 18 The astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 19 The distortion curve of the optical imaging lens of Embodiment 7 is shown, which represents the distortion magnitude value corresponding to different field of view angles. Figure 20 The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the optical imaging lens.

[0154] according to Figures 17 to 20 It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0155] Example 8

[0156] The difference from Example 7 is that the parameters of the lens barrel P0 and the spacer are different.

[0157] like Figure 21 The image shows an optical imaging lens according to Embodiment 8 of this application. For the sake of brevity, descriptions similar to those in Embodiment 7 will be omitted.

[0158] In Embodiment 8 and Embodiment 7, the first to fourth lenses of the optical imaging lens have the same radius of curvature, center thickness, and other parameters, as well as the spacing between the lenses, as shown in Tables 5 and 6. However, at least some parameters, such as the lens barrel P0, the thickness of the spacer, the inner diameter and outer diameter of the spacer, and the distance between the spacers, are different. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 17 to 20 As shown.

[0159] like Figure 21 As shown, there is only one spacer between the first and second lenses, which reduces the assembly difficulty while ensuring assembly stability. The object-side port diameter of the lens barrel is smaller than the image-side port diameter, allowing the lens and spacer to be assembled from the image side of the lens barrel.

[0160] Example 9

[0161] The difference from Example 7 is that the parameters of the lens barrel P0 and the spacer are different.

[0162] like Figure 22 The image shows an optical imaging lens according to Embodiment Nine of this application. For the sake of brevity, descriptions similar to those in Embodiment Seven are omitted.

[0163] In Embodiment Nine and Embodiment Seven, the first to fourth lenses of the optical imaging lens have the same radius of curvature, center thickness, and other parameters, as well as the spacing between the lenses, as shown in Tables 5 and 6. However, at least some parameters, such as the lens barrel P0, the thickness of the spacer, the inner diameter and outer diameter of the spacer, and the distance between the spacers, are different. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figures 17 to 20 As shown.

[0164] like Figure 22 As shown, there is only one separator between the first lens and the second lens, which reduces the difficulty of assembly while ensuring assembly stability.

[0165] In summary, Examples 1 to 9 satisfy the relationships shown in Table 7.

[0166]

[0167]

[0168] Tables 7 and 8 provide some parameters of the optical imaging lenses for Examples 1 to 9.

[0169] Parameters / Examples 1 2 3 4 5 6 7 8 9 d1s 4.3670 4.3070 4.5320 3.2710 3.2730 3.4350 3.6460 3.6490 3.5880 D1m 5.3110 5.6440 4.9380 4.3720 4.7040 4.1900 4.6790 5.0120 4.6790 d2m 3.4650 3.4720 3.4650 2.7370 3.3110 2.7370 2.9380 2.9370 2.9380 D2s 5.2310 5.8440 5.2310 4.2920 4.9040 4.2920 4.5990 5.1120 4.5990 D2m 5.2310 5.8440 5.2310 4.2920 4.9040 4.2920 4.5990 5.1120 4.5990 d3s 3.3520 3.3510 3.3520 2.6930 2.7220 2.6930 2.7840 2.7840 2.7840 d3m 3.3520 3.3510 3.3520 2.6930 2.7220 2.6930 2.7840 2.7840 2.7840 D3s 5.1510 5.9440 5.1510 4.2120 5.0040 4.2120 4.5190 5.2120 4.5190 EP01 1.1250 1.2250 1.1250 1.4060 1.2990 1.4060 1.3510 1.3070 1.4180 CP1 0.0180 0.0220 0.6320 0.0180 0.0220 0.2480 0.0180 0.0220 0.0180 EP12 1.8250 1.6730 1.2110 0.9330 0.9660 0.7030 1.0310 1.0240 0.9650 CP2 0.0180 0.0220 0.0180 0.0180 0.0220 0.0180 0.0180 0.0220 0.0180 EP23 0.4530 0.4970 0.4530 0.7730 0.8040 0.7730 0.4520 0.4500 0.4520 CP3 0.0180 0.0220 0.0180 0.0180 0.0220 0.0180 0.0180 0.0220 0.0180 L 4.2850 3.9560 4.2850 4.3850 3.8540 4.2850 3.7470 3.3970 3.7470 d1bs 4.5320 4.6450 3.9830 4.4350 3.6430 3.1030 4.0400 / / d1bm 5.2040 5.0900 3.9830 4.0000 4.2870 3.1030 4.4550 / / D1bs 4.1460 4.5100 5.3110 3.3170 3.6390 4.3720 4.0410 / / D1bm 4.9380 5.2950 5.3110 4.1900 4.2770 4.3720 4.5410 / / CP1b 0.6140 0.4940 0.0180 0.2300 0.2150 0.0180 0.2110 / /

[0170] Tables 8 and 9 provide partial optical parameters of the first to fourth lenses of the optical imaging lenses in Examples 1 to 9.

[0171]

[0172]

[0173] Table 9

[0174] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0175] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0176] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0177] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0178] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical imaging lens, characterized in that, The optical imaging lens has four lenses with optical power, and the optical imaging lens includes: The optical imaging lens comprises four lenses, arranged sequentially from the object side to the image side, including a first lens to a fourth lens. The first lens has positive optical power and its object side is convex. The second lens has negative optical power and its image side is concave. The third lens has positive optical power, its object side is convex, and its image side is concave. The fourth lens has positive optical power, its object side is convex, and its image side is concave. A plurality of isolation members, wherein the plurality of isolation members include at least a first isolation member located between the first lens and the second lens and in at least partial contact with the image side of the first lens, a second isolation member located between the second lens and the third lens and in at least partial contact with the image side of the second lens, and a third isolation member located between the third lens and the fourth lens and in at least partial contact with the image side of the third lens; The lens barrel has a storage space, and the lens barrel is used to house the four lenses and the plurality of spacers in the storage space; The maximum field of view (Semi-FOV) of the optical imaging lens and the maximum height L of the lens barrel satisfy the following condition: 0.7297mm≤TAN(Semi-FOV)*L≤1.0045mm; The distance EP12 between the image side of the first isolator and the object side of the second isolator along the optical axis of the optical imaging lens, and the air gap T12 between the first lens and the second lens on the optical axis, satisfy the following: 1.5757≤EP12 / T12≤3.1513; The effective focal length f1 of the first lens, the distance EP01 from the object-side end face of the lens barrel to the object-side surface of the first isolator along the optical axis, and the center thickness CT1 of the first lens on the optical axis satisfy the following: 5.7869mm≤f1*EP01 / CT1≤6.6502mm.

2. The optical imaging lens according to claim 1, characterized in that, The combined focal length f234 of the second lens, the third lens, and the fourth lens, the distance EP23 from the image side of the second isolator to the object side of the third isolator along the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis satisfy the following: -16.8623≤f234 / (EP23+T34)≤-6.9134.

3. The optical imaging lens according to claim 1, characterized in that, The outer diameter D1m of the image side of the first isolator, the inner diameter d1s of the object side of the first isolator, and the center thickness CT1 of the first lens on the optical axis satisfy the following: 0.4060≤(D1m-d1s) / CT1≤1.3370.

4. The optical imaging lens according to claim 1, characterized in that, The air gap T23 between the second lens and the third lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the maximum thickness CP3 of the third separator along the optical axis satisfy the following: 0.6431≤T23 / (CT2+CP3)≤1.6730.

5. The optical imaging lens according to claim 1, characterized in that, The outer diameter D2m of the image side of the second isolator and the radius of curvature R3 of the object side of the second lens satisfy the following condition: -0.3656≤D2m / R3≤0.0981. The outer diameter D3s of the object side of the third isolator and the radius of curvature R4 of the image side of the second lens satisfy the following condition: 2.3855≤D3s / R4≤3.4159.

6. The optical imaging lens according to claim 1, characterized in that, The combined focal length f23 of the second lens and the third lens, the refractive index N2 of the second lens, the refractive index N3 of the third lens, and the distance EP23 from the image side of the second isolator to the object side of the third isolator along the optical axis satisfy the following: -3.0162≤f23 / (N2+N3) / EP23≤-1.3962.

7. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R7 of the object side of the fourth lens, the inner diameter d3s of the object side of the third isolator, the radius of curvature R8 of the image side of the fourth lens, and the inner diameter d3m of the image side of the third isolator satisfy the following condition: 1.4132 ≤ R7 / d3s + R8 / d3m ≤ 2.6132.

8. The optical imaging lens according to claim 1, characterized in that, The effective focal length f2 of the second lens, the maximum thickness CP2 of the second isolator along the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy the following condition: -9.0033≤f2 / (CP2+CT2)≤-7.3710.

9. The optical imaging lens according to claim 1, characterized in that, The Abbe number V2 of the second lens, the Abbe number V3 of the third lens, the distance EP23 from the image side of the second isolator to the object side of the third isolator along the optical axis, and the effective focal length f3 of the third lens satisfy the following condition: 2.6992≤(V2+V3)*EP23 / f3≤5.5185.

10. The optical imaging lens according to claim 1, characterized in that, The outer diameter D1m of the image side of the first isolator, the outer diameter D2s of the object side of the second isolator, the maximum effective radius DT21 of the object side of the second lens, and the maximum effective radius DT22 of the image side of the second lens satisfy the following: 2.7235≤(D1m+D2s) / (DT21+DT22)≤3.3003.

11. The optical imaging lens according to any one of claims 1-10, characterized in that, The effective focal length f2 of the second lens and the inner diameter d2m of the image side of the second isolator satisfy the following condition: -1.0745≤f2 / d2m≤-0.7692. The effective focal length f3 of the third lens and the inner diameter d3s of the object side of the third isolator satisfy the following condition: 2.3829≤f3 / d3s≤5.1895.

12. The optical imaging lens according to any one of claims 1-10, characterized in that, The plurality of isolators further includes a first auxiliary isolator located between the first isolator and the second lens and in at least partial contact with the image side of the first isolator. The air gap T12 between the first lens and the second lens on the optical axis, the maximum thickness CP1 of the first isolator along the optical axis, the maximum thickness CP1b of the first auxiliary isolator along the optical axis, and the maximum thickness CP2 of the second isolator along the optical axis satisfy the following: 1.1505≤T12 / (CP1+CP1b+CP2) ≤9.0880.

13. The optical imaging lens according to any one of claims 1-10, characterized in that, The plurality of isolation members further includes a first auxiliary isolation member located between the first isolation member and the second lens and in at least partial contact with the image-side surface of the first isolation member. The effective focal length f1 of the first lens, the inner diameter d1bs of the object-side surface of the first auxiliary isolation member, and the outer diameter D1bs of the object-side surface of the first auxiliary isolation member satisfy the following: 0.5513≤f1 / (d1bs+D1bs)≤0.7997. The effective focal length f2 of the second lens, the inner diameter d1bm of the image-side surface of the first auxiliary isolation member, and the outer diameter D1bm of the image-side surface of the first auxiliary isolation member satisfy the following: -0.3918≤f2 / (d1bm+D1bm)≤-0.2514.

14. The optical imaging lens according to any one of claims 1-10, characterized in that, The following satisfy the following conditions: 0.5675≤SAG11 / (T12+CP1)≤2.5716: the axial distance SAG11 between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, and the maximum thickness CP1 of the first separator along the optical axis.

Images