Optical imaging lens

Abstract

The present invention discloses an optical imaging lens, which includes five lenses. From the object side to the image side in sequence: a first lens with a focal power; a second lens with a focal power; a third lens with a negative focal power; a fourth lens with a focal power, whose object side is convex and image side is convex; a fifth lens with a focal power; wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: TTL / ImgH < 1.30. By using the technical solution provided by the present invention, the size of the camera lens of the optical system is also getting smaller and smaller, which is beneficial to miniaturization. In addition, the imaging quality of the camera lens is further improved and can be matched with the photosensitive element.

Description

Technical Field

[0001] The present invention relates to an optical imaging lens, in particular to an optical imaging lens composed of five lenses. Background Art

[0002] In recent years, with the advancement of technology, portable electronic products have gradually become popular, especially those with camera functions. The photosensitive elements in typical optical systems are either charge-coupled devices (CCDs) or complementary oxide metal semiconductors (COMSs). With the advancement of semiconductor manufacturing technology, the pixel size of photosensitive elements has decreased. Consequently, the size of optical camera lenses has also been reduced to facilitate miniaturization. Furthermore, the image quality of camera lenses needs to be further improved to match the photosensitive elements. Summary of the invention

[0003] Based on the above problems, the present invention proposes an optical lens with five lenses. The size of the camera lens of the optical system is getting smaller and smaller, which is conducive to miniaturization. In addition, the imaging quality of the camera lens is further improved and can match the photosensitive element.

[0004] The present invention discloses an optical imaging lens comprising, in order from the object side to the image side along the optical axis, a first lens element having optical power, a second lens element, a third lens element, a fourth lens element, and a fifth lens element. The third lens element may have negative optical power; and the fourth lens element has a convex object-side surface and a convex image-side surface.

[0005] According to one embodiment of the present invention, the on-axis distance TTL from the object side of the first lens to the imaging plane and half the diagonal length of the effective pixel area on the imaging plane ImgH satisfy the following condition: TTL / ImgH<1.30.

[0006] According to one embodiment of the present invention, the effective focal length f of the optical imaging system and half of the maximum field of view (Semi-FOV) of the optical imaging system satisfy the following relationship: 6.0 mm 2 <f 2 ×tan(Semi-FOV)<7.5mm 2 .

[0007] According to one embodiment of the present invention, the combined focal length f123 of the first lens, the second lens, and the third lens satisfies the following relationship with the effective focal length f1 of the first lens: 1.2 <f123 / f1<1.4。

[0008] According to an embodiment of the present invention, the central thickness CT4 of the fourth lens on the optical axis and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 1.5 < CT4 / T45 < 3.0.

[0009] According to an embodiment of the present invention, the radius of curvature R7 of the object side surface of the fourth lens and the effective focal length f of the optical imaging system satisfy: 3.5 < R7 / f < 7.0.

[0010] According to an embodiment of the present invention, the combined focal length f123 of the first lens, the second lens and the third lens and the radius of curvature R2 of the image side surface of the first lens satisfy: 1.0 < f123 / R2 < 1.5.

[0011] According to an embodiment of the present invention, the sum ∑AT of the air intervals on the optical axis between any two adjacent lenses with optical power among the first lens to the lens closest to the imaging surface and the sum ∑CT of the central thicknesses of all lenses on the optical axis satisfy: 1.5 < ΣCT / ΣAT < 2.5.

[0012] According to an embodiment of the present invention, the combined focal length f12 of the first lens and the second lens and the combined focal length f23 of the second lens and the third lens satisfy: -3.2 < f23 / f12 < -2.0.

[0013] According to an embodiment of the present invention, the axial distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens satisfy: 1.0 < SAG52 / SAG42 < 1.5.

[0014] According to an embodiment of the present invention, the effective focal length f of the optical imaging system, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy: 2.5 < |f / f1| + |f / f5| < 3.5.

[0015] According to an embodiment of the present invention, the perpendicular distance SD52 between the position of the maximum effective diameter of the image side surface of the fifth lens and the optical axis and the axial distance TD from the object side surface of the first lens to the image side surface of the last lens satisfy: 0.8 < SD52 / TD < 0.9.

[0016] According to an embodiment of the present invention, the object side concave surface of the fifth lens.

[0017] One aspect of the present invention provides an optical imaging lens, wherein the fifth lens has a concave object side surface, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, half of the diagonal length ImgH of the effective pixel region on the imaging surface, the effective focal length f of the optical imaging system, and half of the maximum field of view angle Semi-FOV of the optical imaging system satisfy the following conditions:

[0018] TTL / ImgH < 1.30;

[0019] 6.0mm 2 < f 2 ×tan(Semi-FOV) < 7.5mm 2 。

[0020] According to an embodiment of the present invention, the combined focal length f123 of the first lens, the second lens, and the third lens, the effective focal length f1 of the first lens, the central thickness CT4 of the fourth lens on the optical axis, and the air gap T45 between the fourth lens and the fifth lens on the optical axis satisfy:

[0021] 1.2 < f123 / f1 < 1.4;

[0022] 1.5 < CT4 / T45 < 3.0.

[0023] According to an embodiment of the present invention, the radius of curvature R7 of the object side surface of the fourth lens, the effective focal length f of the optical imaging system, the radius of curvature R2 of the image side surface of the first lens, the combined focal length f123 of the first lens, the second lens, and the third lens, and the radius of curvature R2 of the image side surface of the first lens and the radius of curvature R7 of the object side surface of the fourth lens satisfy:

[0024] 3.5 < R7 / f < 7.0;

[0025] 1.0 < f123 / R2 < 1.5.

[0026] According to an embodiment of the present invention, the sum ∑AT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses from the first lens to the lens closest to the imaging surface, the sum ∑CT of the central thicknesses of all lenses on the optical axis, and the combined focal length f12 of the first lens and the second lens and the combined focal length f23 of the second lens and the third lens satisfy:

[0027] 1.5 < ΣCT / ΣAT < 2.5;

[0028] -3.2 < f23 / f12 < -2.0.

[0029] According to an embodiment of the present invention, the axial distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens, and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, the effective focal length f of the optical imaging system, the effective focal length f1 of the first lens, and the effective focal length f5 of the fifth lens satisfy:

[0030] 1.0 < SAG52 / SAG42 < 1.5,

[0031] 2.5 < |f / f1| + |f / f5| < 3.5.

[0032] According to an embodiment of the present invention, the perpendicular distance SD52 between the maximum effective diameter position of the image side surface of the fifth lens and the optical axis, the axial distance TD from the object side surface of the first lens to the image side surface of the last lens, the axial distance TTL from the object side surface of the first lens to the imaging surface, and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy:

[0033] 0.8 < SD52 / TD < 0.9;

[0034] TTL / ImgH < 1.30.

[0035] One aspect of the present invention provides an optical imaging lens. The combined focal length f123 of the first lens, the second lens, and the third lens, the curvature radius R7 of the object side surface of the fourth lens, and the axial distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens satisfy the following conditions:

[0036] 1.0 < f123 / R2 < 1.5;

[0037] 1.0 < SAG52 / SAG42 < 1.5.

[0038] According to an embodiment of the present invention, the effective focal length f of the optical imaging system, half of the maximum field of view angle Semi - FOV of the optical imaging system, the perpendicular distance SD52 between the maximum effective diameter position of the image side surface of the fifth lens and the optical axis, and the axial distance TD from the object side surface of the first lens to the image side surface of the last lens satisfy:

[0039] 6.0mm 2 < f 2 × tan(Semi - FOV) < 7.5mm 2 ;

[0040] 0.8 < SD52 / TD < 0.9.

[0041] According to an embodiment of the present invention, for the combined focal length f123 of the first lens, the second lens, and the third lens, the effective focal length f of the optical imaging system, and the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens, the following relationships are satisfied:

[0042] 1.2 < f123 / f1 < 1.4;

[0043] 2.5 < |f / f1| + |f / f5| < 3.5.

[0044] According to an embodiment of the present invention, for the central thickness CT4 of the fourth lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis, and for the combined focal length f12 of the first lens and the second lens and the combined focal length f23 of the second lens and the third lens, the following relationships are satisfied:

[0045] 1.5 < CT4 / T45 < 3.0;

[0046] -3.2 < f23 / f12 < -2.0.

[0047] According to an embodiment of the present invention, for the radius of curvature R7 of the object side surface of the fourth lens, the effective focal length f of the optical imaging system, the sum ΣAT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses from the first lens to the lens closest to the imaging surface, and the sum ΣCT of the central thicknesses of all lenses on the optical axis, the following relationships are satisfied:

[0048] 3.5 < R7 / f < 7.0;

[0049] 1.5 < ΣCT / ΣAT < 2.5.

[0050] Positive effects of the present invention: By using the technical solution provided by the present invention, the size of the camera lens of the optical system is getting smaller and smaller, which is beneficial to miniaturization. In addition, the imaging quality of the camera lens is further improved and can be matched with the photosensitive element. Description of the Drawings

[0051] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more apparent:

[0052] Figure 1 The following shows a schematic structural diagram of the optical imaging lens according to the first embodiment of the present invention;

[0053] Figures 2 - 5 The following shows the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the first embodiment of the present invention;

[0054] Figure 6The following is a schematic structural diagram of the optical imaging lens according to the second embodiment of the present invention;

[0055] Figures 7 - 10 The following are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the second embodiment of the present invention;

[0056] Figure 11 The following is a schematic structural diagram of the optical imaging lens according to the third embodiment of the present invention;

[0057] Figures 12 - 15 The following are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the third embodiment of the present invention;

[0058] Figure 16 The following is a schematic structural diagram of the optical imaging lens according to the fourth embodiment of the present invention;

[0059] Figures 17 - 20 The following are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the fourth embodiment of the present invention;

[0060] Figure 21 The following is a schematic structural diagram of the optical imaging lens according to the fifth embodiment of the present invention;

[0061] Figures 22 - 25 The following are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the fifth embodiment of the present invention;

[0062] Figure 26 The following is a schematic structural diagram of the optical imaging lens according to the sixth embodiment of the present invention;

[0063] Figures 27 - 30 The following are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the sixth embodiment of the present invention; Detailed Embodiments

[0064] To better understand the present invention, more detailed descriptions of various aspects of the present invention will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present invention and do not limit the scope of the present invention in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0065] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present invention, the first lens discussed below may also be referred to as the second lens or the third lens.

[0066] In the drawings, for ease of explanation, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are for illustrative purposes only and are not drawn to an exact scale.

[0067] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0068] It should also be understood that the terms "comprises", "comprising", "has", "including", and / or "including having", when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features, rather than modifying an individual element in the list. In addition, when describing embodiments of the present invention, the use of "may" means "one or more embodiments of the present invention". And the term "exemplary" is intended to refer to an example or illustration.

[0069] Unless otherwise defined, all terms (including technical and scientific terms) used in this document have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal manner unless expressly so defined herein.

[0070] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0071] The features, principles, and other aspects of the present invention will be described in detail below.

[0072] The optical imaging lens according to an exemplary embodiment of the present invention may include five lenses, which are, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens.

[0073] In the embodiments of the present invention, by reasonably controlling the optical power of each optical component of the system, the low-order aberrations of the control system are effectively balanced. The first lens has a positive optical power or a negative optical power; the second lens has a positive optical power or a negative optical power; the third lens has a negative optical power; the fourth lens has a positive optical power or a negative optical power, its object side is convex, and its image side is convex; the fifth lens has a positive optical power or a negative optical power.

[0074] In the embodiments of the present invention, the optical imaging lens can meet the condition of TTL / ImgH < 1.30; where TTL is the axial distance from the object side of the first lens to the imaging surface, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface. By restricting the ratio of the axial distance from the object side of the first lens to the imaging surface to half of the diagonal length of the effective pixel area on the imaging surface, the ultra-thinness and high pixels of the optical imaging lens can be achieved simultaneously. More specifically, TTL and ImgH satisfy: 1.14 ≤ TTL / ImgH ≤ 1.17.

[0075] In the embodiments of the present invention, the optical imaging lens can meet 6.0mm 2 <f 2 ×tan(Semi-FOV) < 7.5mm 2 condition; where f is the effective focal length of the optical imaging system, and Semi-FOV is half of the maximum field of view angle of the optical imaging system. By controlling the effective focal length of the optical imaging system and half of its maximum field of view angle, the image height of the optical system can be limited within a reasonable range. More specifically, f and Semi-FOV satisfy: 6.63mm 2 ≤ f 2 ×tan(Semi-FOV) ≤ 7.09mm 2 .

[0076] In the embodiments of the present invention, the optical imaging lens can meet the condition of 1.2 < f123 / f1 < 1.4; where f123 is the combined focal length of the first lens, the second lens, and the third lens, and f1 is the effective focal length of the first lens. By restricting the ratio range of the combined focal length of the first lens, the second lens, and the third lens to the system focal length, the combination of the first, second, and third lenses can be made into a lens group with a reasonable positive optical power to balance the aberrations generated by the lens group with a negative optical power at the rear end, thereby obtaining good imaging quality and achieving the effect of high resolution. More specifically, f123 and f1 satisfy: 1.25 ≤ f123 / f1 ≤ 1.36.

[0077] In an embodiment of the present invention, the optical imaging lens can meet the condition of 1.5 < CT4 / T45 < 3.0; where CT4 is the central thickness of the fourth lens on the optical axis, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the central thickness of the fourth lens on the optical axis to the air gap between the fourth lens and the fifth lens on the optical axis, the change in the field curvature of the image plane can be adjusted within a relatively small range. More specifically, CT4 and T45 satisfy: 1.79 ≤ CT4 / T45 ≤ 2.65.

[0078] In an embodiment of the present invention, the optical imaging lens can meet the condition of 3.5 < R7 / f < 7.0; where R7 is the curvature radius of the object side surface of the fourth lens, and f is the effective focal length of the optical imaging system. By controlling the curvature radius of the object side surface of the fourth lens and its effective focal length, the contribution rate of its fifth-order spherical aberration can be controlled to a certain extent to balance the fifth-order spherical aberration generated on the image side, so that the fifth-order spherical aberration of the fourth lens is controlled within a reasonable range. More specifically, R7 and f satisfy: 3.83 ≤ R7 / f ≤ 6.71.

[0079] In an embodiment of the present invention, the optical imaging lens can meet the condition of 1.0 < f123 / R2 < 1.5; where f123 is the combined focal length of the first lens, the second lens, and the third lens, and R2 is the curvature radius of the image side surface of the first lens. By controlling the ratio of the curvature radius of the image side surface of the first lens to the combined focal length of the first lens, the second lens, and the third lens, the third-order coma can be controlled within a reasonable range, and then the coma generated by the front-end optical lens can be balanced, so that the system has good imaging quality. More specifically, f123 and R2 satisfy: 1.10 ≤ f123 / R2 ≤ 1.28.

[0080] In an embodiment of the present invention, the optical imaging lens can meet the relationship of 1.5 < ΣCT / ΣAT < 2.5; where ∑AT is the sum of the air gaps between any two adjacent lenses with optical power on the optical axis from the first lens to the lens closest to the imaging surface, and ∑CT is the sum of the central thicknesses of all lenses on the optical axis. By reasonably allocating the thickness of the lenses and the gap thickness between the lenses, it is beneficial to improve the processability of the lenses and the stability of assembly. More specifically, ΣCT and ΣAT satisfy: 1.53 ≤ ΣCT / ΣAT ≤ 2.32.

[0081] In an embodiment of the present invention, the optical imaging lens can meet the condition of -3.2 < f23 / f12 < -2.0; where f12 is the combined focal length of the first lens and the second lens, and f23 is the combined focal length of the second lens and the third lens. By reasonably controlling the combined focal length of the second lens and the third lens and the combined focal length of the first lens and the second lens within a certain range, the contribution of the aberrations of the four lenses can be controlled, balanced with the aberrations generated by the rear optical lens, so that the system aberrations are in a reasonable level state, and thus the optical imaging system has good imaging quality. More specifically, the relationship between f23 and f12 satisfies: -3.13 ≤ f23 / f12 ≤ -2.18.

[0082] In an embodiment of the present invention, the optical imaging lens can meet the condition of 1.0 < SAG52 / SAG42 < 1.5; where SAG42 is the axial distance between the intersection point of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens, and SAG52 is the axial distance between the intersection point of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens. By restricting the sagittal height of the image side surface of the fourth lens and the sagittal height of the image side surface of the fifth lens, it is beneficial to restrict the height of the lens light rays and miniaturize the system. More specifically, the relationship between SAG52 and SAG42 satisfies: 1.15 ≤ SAG52 / SAG42 ≤ 1.40.

[0083] In an embodiment of the present invention, the optical imaging lens can meet the condition of 2.5 < |f / f1| + |f / f5| < 3.5; where f is the effective focal length of the optical imaging system, f1 is the effective focal length of the first lens, and f5 is the effective focal length of the fifth lens. By reasonably controlling the range of the above formula, a reasonable positive third-order spherical aberration and negative fifth-order spherical aberration can be contributed, balancing the negative third-order spherical aberration and positive fifth-order spherical aberration generated by the first lens and the fifth lens, so that the system has a small spherical aberration and ensures good imaging quality in the axial field of view. More specifically, the relationship between f, f1, and f5 satisfies: 2.83 ≤ |f / f1| + |f / f5| ≤ 3.24.

[0084] In an embodiment of the present invention, the optical imaging lens can meet the condition of 0.8 < SD52 / TD < 0.9; where SD52 is the perpendicular distance between the maximum effective diameter position of the image side surface of the fifth lens and the optical axis, and TD is the axial distance from the object side surface of the first lens to the image side surface of the last lens. By restricting the ratio of the maximum effective diameter position of the image side surface of the fifth lens to the axial distance from the object side surface of the first lens to the image side surface of the last lens, the refraction angle of the light rays can be restricted, preventing the light rays from being too steep, which is beneficial to lens assembly. More specifically, the relationship between SD52 and TD satisfies: 0.81 ≤ SD52 / TD ≤ 0.85.

[0085] All the technical features in the above-mentioned inventive optical imaging lens can be combined and configured to achieve corresponding effects.

[0086] The optical imaging lens according to the above embodiments of the present invention can employ multiple lenses, such as the five lenses described above. By reasonably controlling the optical power of each optical component, the low-order aberrations of the control system can be effectively balanced. By restricting the ratio of the axial distance from the object side surface of the first lens to the imaging surface and half of the diagonal length of the effective pixel area on the imaging surface, the ultra-thinness and high pixel count of the optical imaging lens can be achieved simultaneously, and the imaging quality of the camera lens is further improved, enabling it to match smaller and smaller photosensitive elements.

[0087] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0088] Embodiment 1

[0089] Figure 1 Shown is a schematic structural diagram of the optical imaging lens according to the first embodiment of the present invention. As Figure 1 shown, this camera lens assembly includes, in sequence from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0090] Among them, the first lens E1 has a positive optical power, its object side surface S1 is convex, and its image side surface S2 is concave; the second lens E2 has a positive optical power, its object side surface S3 is convex, and its image side surface S4 is concave; the third lens E3 has a negative optical power, its object side surface S5 is concave, and its image side surface S6 is concave; the fourth lens E4 has a positive optical power, its object side surface S7 is convex, and its image side surface S8 is convex; the fifth lens E5 has a negative optical power, its object side surface S9 is concave, and its image side surface S10 is concave. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0091] Table 1 shows the basic parameters of the optical imaging lens of this first embodiment, where the radius of curvature, thickness, and focal length are in millimeters.

[0092] Surface number Surface type Radius of curvature Thickness Focal length Refractive index Dispersion coefficient Conic coefficient OBJ Spherical surface Infinity 400.0000 STO Spherical surface Infinity -0.1797 S1 Aspherical surface 0.9416 0.4688 2.52 1.55 56.1 0.0641 S2 Aspherical surface 2.4691 0.0814 -51.7963 S3 Aspherical surface 261.9251 0.2200 430.72 1.68 19.2 62.5033 S4 Aspherical surface 2553.9305 0.2309 99.0000 S5 Aspherical surface -8.1598 0.2814 -7.42 1.67 20.4 99.0000 S6 Aspherical surface 12.7749 0.2209 47.3446 S7 Aspherical surface 16.0432 0.5820 1.64 1.55 56.1 83.2495 S8 Aspherical surface -0.9386 0.2313 -4.6109 S9 Aspherical surface -1.0661 0.2200 -1.33 1.54 55.7 -3.1741 S10 Aspherical surface 2.3333 0.2195 -1.0905 S11 Spherical surface Infinity 0.1100 1.51 64.2 S12 Spherical surface Infinity 0.2630 S13 Spherical surface Infinity

[0093] Table 1

[0094] The value of the total effective focal length f of the optical imaging lens is 2.61 mm, the value of the f-number Fno of the optical imaging lens is 2.15, the value of the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 3.13 mm, the value of half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 is 2.75 mm, and the value of half of the maximum field of view Semi-FOV is 44.22°.

[0095] The on-axis distance TTL from the object side surface of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy TTL / ImgH = 1.14 and the relational expression: TTL / ImgH < 1.30.

[0096] In this first embodiment, for the effective focal length f of the optical imaging system and half of the maximum field of view angle Semi-FOV of the optical imaging system, f 2 ×tan(Semi-FOV) = 6.63, satisfying the relational expression:

[0097] 6.0mm 2 < f 2 ×tan(Semi-FOV) < 7.5mm 2 .

[0098] In this first embodiment, for the combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f1 of the first lens, f123 / f1 = 1.26, satisfying the relational expression: 1.2 < f123 / f1 < 1.4.

[0099] In this first embodiment, for the central thickness CT4 of the fourth lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis, CT4 / T45 = 2.52, satisfying the relational expression: 1.5 < CT4 / T45 < 3.0.

[0100] In this first embodiment, for the curvature radius R7 of the object side surface of the fourth lens and the effective focal length f of the optical imaging system, R7 / f = 6.15, satisfying the relational expression: 3.5 < R7 / f < 7.0.

[0101] In this first embodiment, for the combined focal length f123 of the first lens, the second lens, and the third lens and the curvature radius R7 of the object side surface of the fourth lens, f123 / R2 = 1.28, satisfying the relational expression: 1.0 < f123 / R2 < 1.5.

[0102] In this first embodiment, for the sum ΣAT of the air gaps on the optical axis between any two adjacent lenses with optical power among the lenses from the first lens to the lens closest to the imaging surface and the sum ΣCT of the central thicknesses of all the lenses on the optical axis, ΣCT / ΣAT = 2.32, satisfying the relational expression: 1.5 < ΣCT / ΣAT < 2.5.

[0103] In this first embodiment, for the combined focal length f12 of the first lens and the second lens and the combined focal length f23 of the second lens and the third lens, f23 / f12 = -3.02, satisfying the relational expression: -3.2 < f23 / f12 < -2.0.

[0104] In this first embodiment, the axial distance SAG42 between the intersection point of the image-side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image-side surface of the fourth lens, and the axial distance SAG52 between the intersection point of the image-side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image-side surface of the fifth lens, SAG52 / SAG42 = 1.20, satisfy the relationship: 1.0 < SAG52 / SAG42 < 1.5.

[0105] In this first embodiment, for the effective focal length f of the optical imaging system, the effective focal length f1 of the first lens, and the effective focal length f5 of the fifth lens, |f / f1| + |f / f5| = 2.99, satisfy the relationship: 2.5 < |f / f1| + |f / f5| < 3.5.

[0106] In this first embodiment, the perpendicular distance SD52 between the maximum effective diameter position of the image-side surface of the fifth lens and the optical axis, and the axial distance TD from the object-side surface of the first lens to the image-side surface of the last lens, SD52 / TD = 0.84, satisfy the relationship: 0.8 < SD52 / TD < 0.9.

[0107] In this first embodiment, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. The surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0108]

[0109] Where x is the sagitta, the distance from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient (given in Table 1); Ai is the correction coefficient of the i-th order of the aspherical surface.

[0110] The following Table 2 and Table 3 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of each aspherical surface S1 - S10 of each aspherical lens that can be used in the first embodiment of the present invention.

[0111] Surface number A4 A6 A8 A10 A12 A14 A16 A18 S1 -2.2637E-02 5.5119E-01 -1.2563E+01 1.5011E+02 -1.0742E+03 4.6618E+03 -1.2033E+04 1.6956E+04 S2 3.2639E-01 -1.7816E+00 2.8185E+00 2.3315E+01 -3.4877E+02 1.9743E+03 -5.9375E+03 8.9521E+03 S3 -1.0785E-01 4.7528E-01 -3.1915E+00 9.0344E+00 2.0677E+02 -2.4423E+03 1.1663E+04 -2.7023E+04 S4 1.0415E-01 -2.1070E+00 4.7740E+01 -5.0209E+02 3.4569E+03 -1.5209E+04 4.1534E+04 -6.4161E+04 S5 -5.0998E-01 9.7160E-01 -1.0218E+01 7.5221E+01 -3.7166E+02 1.2319E+03 -2.6226E+03 3.2310E+03 S6 -4.4169E-01 7.8207E-01 -2.5839E+00 6.6220E+00 -1.1294E+01 1.4687E+01 -1.4065E+01 8.0538E+00 S7 -1.8633E-01 1.0988E-01 2.2607E+00 -1.3258E+01 4.0095E+01 -7.7953E+01 1.0432E+02 -9.8850E+01 S8 -1.8583E-01 -9.1534E-02 3.2338E+00 -1.2672E+01 2.8449E+01 -4.1759E+01 4.2082E+01 -2.9871E+01 S9 -5.6670E-02 -1.7670E-01 3.5384E-01 -5.8664E-01 1.1223E+00 -1.5308E+00 1.4087E+00 -9.0321E-01 S10 -2.8218E-01 4.3350E-01 -1.0453E+00 2.0475E+00 -2.8203E+00 2.7330E+00 -1.8927E+00 9.4515E-01

[0112] Table 2

[0113] Surface number A20 A22 A24 A26 A28 A30 S1 -1.0053E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -5.1485E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 2.4876E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.2985E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.7879E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.9812E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 6.6915E+01 -3.2155E+01 1.0714E+01 -2.3537E+00 3.0666E-01 -1.7952E-02 S8 1.5087E+01 -5.3959E+00 1.3362E+00 -2.1793E-01 2.1056E-02 -9.1284E-04 S9 4.0881E-01 -1.2978E-01 2.8205E-02 -3.9912E-03 3.3113E-04 -1.2221E-05 S10 -3.4018E-01 8.7239E-02 -1.5519E-02 1.8171E-03 -1.2579E-04 3.8973E-06

[0114] Table 3

[0115] Figure 2 The axial chromatic aberration curve of the optical imaging lens in the first embodiment is shown, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens.Figure 3 The astigmatism curve of the optical imaging lens in the first embodiment is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 4 The distortion curve of the optical imaging lens in the first embodiment is shown, which represents the distortion values corresponding to different image heights. Figure 5 The longitudinal chromatic aberration curve of the optical imaging lens in the first embodiment is shown, which represents the deviation of different image heights on the imaging plane after the light passes through the lens. According to Figures 2 to 5 It can be seen that the optical imaging lens given in the first embodiment can achieve good imaging quality.

[0116] Embodiment 2

[0117] Figure 6 The structural schematic diagram of the optical imaging lens according to the second embodiment of the present invention is shown. As Figure 6 shown, the camera lens assembly includes, in order from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0118] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative optical power, its object side S3 is a concave surface, and its image side S4 is a concave surface; the third lens E3 has a negative optical power, its object side S5 is a concave surface, and its image side S6 is a concave surface; the fourth lens E4 has a positive optical power, its object side S7 is a convex surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a concave surface. The light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0119] In the second embodiment of the present invention, the parameters of each relational expression are as explained in the first embodiment, and the values of each relational expression are listed in Table 4 below.

[0120]

[0121] Table 4

[0122] Table 5 shows the basic parameters of the optical imaging lens according to the second embodiment of the present invention. Among them, the radius of curvature, thickness, and focal length are in millimeters.

[0123]

[0124]

[0125] Table 5

[0126] Table 6 and Table 7 below give the coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of the higher-order terms of the aspherical surfaces S1 - S10 of each aspherical lens that can be used in the second embodiment of the present invention. Among them, the aspherical surface profiles can be defined by formula (1) given in Embodiment 1 above.

[0127] Surface number A4 A6 A8 A10 A12 A14 A16 A18 S1 -8.7318E-03 6.6706E-01 -1.2336E+01 1.3934E+02 -9.6196E+02 4.0910E+03 -1.0435E+04 1.4612E+04 S2 1.5713E-01 -1.1971E+00 1.2277E+01 -1.6533E+02 1.5086E+03 -8.7446E+03 3.0492E+04 -5.8415E+04 S3 -1.1015E-01 8.2420E-01 -9.3892E+00 6.9251E+01 -9.8333E+01 -1.8200E+03 1.2277E+04 -3.1727E+04 S4 3.8530E-02 1.0606E+00 -6.7220E+00 7.0801E+01 -4.3057E+02 1.6862E+03 -4.0702E+03 5.5013E+03 S5 -5.4379E-01 1.7490E+00 -1.6639E+01 1.1118E+02 -4.9627E+02 1.4435E+03 -2.6259E+03 2.7255E+03 S6 -4.7740E-01 1.2840E+00 -6.5874E+00 2.5474E+01 -6.6441E+01 1.1338E+02 -1.1854E+02 6.8053E+01 S7 -2.0085E-01 4.1867E-01 -2.8908E-02 -3.1154E+00 1.1414E+01 -2.3091E+01 3.0581E+01 -2.7927E+01 S8 -1.9358E-01 1.2959E-01 1.7226E+00 -7.5882E+00 1.7804E+01 -2.6691E+01 2.7109E+01 -1.9239E+01 S9 -7.0691E-02 -4.9374E-02 -7.0412E-03 1.4983E-03 4.8699E-01 -1.0559E+00 1.1485E+00 -7.8933E-01 S10 -2.3748E-01 3.1887E-01 -7.3882E-01 1.3877E+00 -1.8053E+00 1.6364E+00 -1.0546E+00 4.8894E-01

[0128] Table 6

[0129] Surface number A20 A22 A24 A26 A28 A30 S1 -8.6525E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 4.6986E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 3.0400E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.0321E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.2559E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.6389E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.7924E+01 -8.0827E+00 2.5116E+00 -5.1271E-01 6.1953E-02 -3.3603E-03 S8 9.6684E+00 -3.4317E+00 8.4230E-01 -1.3611E-01 1.3032E-02 -5.6020E-04 S9 3.6640E-01 -1.1667E-01 2.5144E-02 -3.5090E-03 2.8640E-04 -1.0389E-05 S10 -1.6328E-01 3.8861E-02 -6.4204E-03 6.9878E-04 -4.5000E-05 1.2979E-06

[0130] Table 7

[0131] Figure 7 The axial chromatic aberration curve of the optical imaging lens in the second embodiment of the present invention is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 8 The astigmatism curve of the optical imaging lens in the second embodiment of the present invention is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 9 The distortion curve of the optical imaging lens in the second embodiment of the present invention is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 10 The lateral chromatic aberration curve of the optical imaging lens in the second embodiment of the present invention is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 7 to 10 It can be seen that the optical imaging lens given in the second embodiment of the present invention can achieve good imaging quality.

[0132] Embodiment 3

[0133] Figure 11 The structural schematic diagram of the optical imaging lens of the third embodiment of the present invention is shown. As Figure 11 shown, this camera lens assembly includes, in order from the object side to the image side, a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0134] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative optical power, its object side S3 is a concave surface, and its image side S4 is a concave surface; the third lens E3 has a negative optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a convex surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a convex surface. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0135] In the third embodiment of the present invention, the parameters of each relational expression are as explained in the first embodiment, and the numerical values of each relational expression are listed in Table 8 below.

[0136]

[0137] Table 8

[0138] Table 9 shows the basic parameters of the optical imaging lens according to the third embodiment of the present invention, where the radius of curvature, thickness, and focal length are in millimeters.

[0139] Surface number Surface type Radius of curvature Thickness Focal length Refractive index Dispersion coefficient Conic coefficient OBJ Spherical surface Infinity 400.0000 STO Spherical surface Infinity -0.1898 S1 Aspherical surface 0.9444 0.4000 2.44 1.55 56.1 0.0695 S2 Aspherical surface 2.7574 0.0944 -50.2579 S3 Aspherical surface -31.0202 0.2200 -9.63 1.68 19.2 99.0000 S4 Aspherical surface 8.2879 0.2662 2.3701 S5 Aspherical surface -228.6390 0.2200 -631.69 1.67 20.4 -99.0000 S6 Aspherical surface -500.0000 0.3897 57.3754 S7 Aspherical surface 16.5904 0.5445 2.11 1.55 56.1 87.9936 S8 Aspherical surface -1.2236 0.2993 -4.5802 S9 Aspherical surface -0.8378 0.2200 -1.57 1.54 55.7 -3.1790 S10 Aspherical surface -200.0000 0.1850 -1.0333 S11 Spherical surface Infinity 0.1100 1.51 64.2 S12 Spherical surface Infinity 0.2284 S13 Spherical surface Infinity

[0140] Table 9

[0141] The following Table 10 and Table 11 give the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of each aspherical lens S1 - S10 that can be used in the third embodiment of the present invention. Among them, the aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0142] Surface number A4 A6 A8 A10 A12 A14 A16 A18 S1 -2.4830E-03 6.0017E-01 -1.1568E+01 1.3728E+02 -9.7778E+02 4.2599E+03 -1.1091E+04 1.5844E+04 S2 2.0729E-01 -1.1293E+00 3.0062E+00 1.4574E+01 -2.7544E+02 1.5831E+03 -4.4314E+03 5.6806E+03 S3 -1.7359E-01 9.4613E-01 -1.5059E+01 1.7371E+02 -1.1560E+03 4.5105E+03 -9.9576E+03 1.0742E+04 S4 2.5231E-02 3.8131E-01 3.7192E+00 -3.7040E+01 2.8634E+02 -1.3978E+03 4.2319E+03 -7.2194E+03 S5 -4.4315E-01 1.3561E+00 -1.2413E+01 7.1195E+01 -2.5360E+02 5.5490E+02 -6.9615E+02 4.2364E+02 S6 -3.7447E-01 1.1630E+00 -7.3107E+00 3.1216E+01 -8.5710E+01 1.5141E+02 -1.6318E+02 9.6454E+01 S7 -2.3304E-01 6.1068E-01 -1.0569E+00 1.4472E-01 3.9963E+00 -1.0628E+01 1.5423E+01 -1.4939E+01 S8 -2.7537E-01 3.9689E-01 1.3090E+00 -7.3451E+00 1.7189E+01 -2.4401E+01 2.3141E+01 -1.5292E+01 S9 -6.9629E-02 -8.8299E-02 1.5741E-01 -2.1863E-01 3.8059E-01 -3.7778E-01 2.0443E-01 -5.9120E-02 S10 4.5803E-01 -1.5379E+00 2.9542E+00 -3.9764E+00 3.8861E+00 -2.7962E+00 1.4897E+00 -5.8745E-01

[0143] Table 10

[0144] Surface number A20 A22 A24 A26 A28 A30 S1 -9.5662E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.4567E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -3.7581E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 5.3799E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -8.1772E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -2.3891E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.0292E+01 -5.1252E+00 1.8130E+00 -4.3186E-01 6.1894E-02 -4.0150E-03 S8 7.1625E+00 -2.3752E+00 5.4637E-01 -8.3054E-02 7.5114E-03 -3.0632E-04 S9 5.5806E-03 2.0648E-03 -8.6967E-04 1.4807E-04 -1.2781E-05 4.6009E-07 S10 1.7027E-01 -3.5692E-02 5.2490E-03 -5.1246E-04 2.9767E-05 -7.7721E-07

[0145] Table 11

[0146] Figure 12 Shown is the axial chromatic aberration curve of the optical imaging lens according to the third embodiment of the present invention, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 13 Shown is the astigmatism curve of the optical imaging lens according to the third embodiment of the present invention, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14 Shown is the distortion curve of the optical imaging lens according to the third embodiment of the present invention, which represents the distortion magnitude values corresponding to different image heights. Figure 15 Shown is the lateral chromatic aberration curve of the optical imaging lens according to the third embodiment of the present invention, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 12 to 15 It can be seen that the optical imaging lens given in the third embodiment of the present invention can achieve good imaging quality.

[0147] Embodiment Four

[0148] Figure 16 Shown is the structural schematic diagram of the optical imaging lens according to the fourth embodiment of the present invention, as Figure 16As shown, the present camera lens assembly includes, in sequence from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0149] Among them, the first lens E1 has a positive focal power, its object side S1 is convex, and its image side S2 is concave; the second lens E2 has a negative focal power, its object side S3 is concave, and its image side S4 is concave; the third lens E3 has a negative focal power, its object side S5 is concave, and its image side S6 is convex; the fourth lens E4 has a positive focal power, its object side S7 is convex, and its image side S8 is convex; the fifth lens E5 has a negative focal power, its object side S9 is concave, and its image side S10 is concave. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0150] In the fourth embodiment of the present invention, the parameters of each relational expression are as explained in the first embodiment, and the values of each relational expression are as listed in Table 12 below.

[0151]

[0152] Table 12

[0153] Table 13 shows the basic parameters of the optical imaging lens of the fourth embodiment of the present invention, where the radius of curvature, thickness, and focal length are in millimeters.

[0154] Surface number Surface type Radius of curvature Thickness Focal length Refractive index Dispersion coefficient Conic coefficient OBJ Spherical surface Infinity 400.0000 STO Spherical surface Infinity -0.1913 S1 Aspherical surface 0.9349 0.4064 2.37 1.55 56.1 0.0797 S2 Aspherical surface 2.7820 0.0895 -44.9662 S3 Aspherical surface -15.9633 0.2200 -11.48 1.68 19.2 99.0000 S4 Aspherical surface 15.9637 0.2628 -99.0000 S5 Aspherical surface -11.2876 0.2516 -14.98 1.67 20.4 -86.1480 S6 Aspherical surface -800.0000 0.3352 99.0000 S7 Aspherical surface 10.3702 0.5632 1.69 1.55 56.1 -77.7522 S8 Aspherical surface -0.9617 0.2127 -4.5484 S9 Aspherical surface -1.0274 0.2200 -1.33 1.54 55.7 -3.3151 S10 Aspherical surface 2.2593 0.2377 -1.0856 S11 Spherical surface Infinity 0.1100 1.51 64.2 S12 Spherical surface Infinity 0.2807 S13 Spherical surface Infinity

[0155] Table 13

[0156] Table 14 and Table 15 below give the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of each aspherical surface S1 - S10 of the aspherical lenses that can be used in the fourth embodiment of the present invention. Among them, the aspherical surface types can be defined by the formula (1) given in Embodiment 1 above.

[0157]

[0158]

[0159] Table 14

[0160] Surface number A20 A22 A24 A26 A28 A30 S1 -8.3043E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 3.2086E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -4.6974E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.8641E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.9115E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.6611E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.9570E+01 -8.7058E+00 2.6791E+00 -5.4316E-01 6.5316E-02 -3.5313E-03 S8 9.7469E+00 -3.4216E+00 8.3067E-01 -1.3274E-01 1.2564E-02 -5.3359E-04 S9 9.7381E-01 -3.0113E-01 6.4131E-02 -8.9459E-03 7.3545E-04 -2.7007E-05 S10 -2.6072E-01 6.5511E-02 -1.1402E-02 1.3047E-03 -8.8158E-05 2.6629E-06

[0161] Table 15

[0162] Figure 17The axial chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present invention is shown, which represents the deviation of the converging focal points of light rays with different wavelengths after passing through the lens. Figure 18 The astigmatism curve of the optical imaging lens in the fourth embodiment of the present invention 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 in the fourth embodiment of the present invention is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 20 Shown is the lateral chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present invention, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 17 to 20 It can be seen that the optical imaging lens provided in the fourth embodiment of the present invention can achieve good imaging quality.

[0163] Embodiment Five

[0164] Figure 21 The structural schematic diagram of the optical imaging lens according to the fifth embodiment of the present invention is shown. As Figure 21 shown, the imaging lens assembly sequentially includes, from the object side to the image side, a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging plane S13.

[0165] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative optical power, its object side S3 is a concave surface, and its image side S4 is a concave surface; the third lens E3 has a negative optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a convex surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a convex surface. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging plane S13.

[0166] In the fifth embodiment of the present invention, the parameters of each relational expression are as explained in the first embodiment, and the values of each relational expression are listed in Table 16 below.

[0167]

[0168] Table 16

[0169] Table 17 shows the basic parameters of the imaging lens assembly according to the fifth embodiment of the present invention, where the radius of curvature, thickness, and focal length are in millimeters.

[0170] Surface number Surface type Radius of curvature Thickness Focal length Refractive index Dispersion coefficient Conic coefficient OBJ Spherical surface Infinity 400.0000 STO Spherical surface Infinity -0.1977 S1 Aspherical surface 0.9306 0.4094 2.41 1.55 56.1 0.0797 S2 Aspherical surface 2.6792 0.0859 -44.9662 S3 Aspherical surface -164.7782 0.2200 -12.10 1.68 19.2 99.0000 S4 Aspherical surface 8.6322 0.2610 -99.0000 S5 Aspherical surface -10.0202 0.2487 -15.21 1.67 20.4 -86.1480 S6 Aspherical surface -800.0000 0.3129 99.0000 S7 Aspherical surface 10.8806 0.5609 1.97 1.55 56.1 -77.7522 S8 Aspherical surface -1.1748 0.3026 -4.5484 S9 Aspherical surface -0.8401 0.2200 -1.57 1.54 55.7 -3.3151 S10 Aspherical surface -500.0000 0.2128 -1.0856 S11 Spherical surface Infinity 0.1100 1.51 64.2 S12 Spherical surface Infinity 0.2558 S13 Spherical surface Infinity

[0171] Table 17

[0172] Table 18 and Table 19 below give the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of each aspherical surface S1 - S10 of each aspherical lens that can be used in the fifth embodiment of the present invention. Among them, the aspherical surface profile can be defined by formula (1) given in Embodiment 1 above.

[0173]

[0174]

[0175] Table 18

[0176] Surface number A20 A22 A24 A26 A28 A30 S1 -8.3838E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.9026E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 9.2243E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -7.8165E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -4.4070E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -2.4061E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 3.3262E+01 -1.4965E+01 4.6468E+00 -9.5105E-01 1.1576E-01 -6.3610E-03 S8 1.6746E+01 -5.8425E+00 1.4136E+00 -2.2586E-01 2.1452E-02 -9.1783E-04 S9 4.7257E-02 -1.9675E-02 4.9893E-03 -7.7470E-04 6.7906E-05 -2.5811E-06 S10 1.5050E-01 -3.2538E-02 4.9426E-03 -4.9925E-04 3.0061E-05 -8.1544E-07

[0177] Table 19

[0178] Figure 22 The axial chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present invention is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 23 The astigmatism curve of the optical imaging lens in the fifth embodiment of the present invention is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 24 The distortion curve of the optical imaging lens in the fifth embodiment of the present invention is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 25 The longitudinal chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present invention is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 22 to 25 it can be known that the optical imaging lens given in the fifth embodiment of the present invention can achieve good imaging quality.

[0179] Embodiment Six

[0180] Figure 26 The structural schematic diagram of the optical imaging lens of the sixth embodiment of the present invention is shown. As Figure 26 shown, this camera lens assembly includes, in order from the object side to the image side, a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0181] Among them, the first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave; the second lens E2 has a negative optical power, its object side S3 is concave, and its image side S4 is concave; the third lens E3 has a negative optical power, its object side S5 is convex, and its image side S6 is concave; the fourth lens E4 has a positive optical power, its object side S7 is convex, and its image side S8 is convex; the fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is convex. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0182] In the sixth embodiment of the present invention, the parameters of each relational expression are as explained in the first embodiment, and the numerical values of each relational expression are as listed in Table 20 below.

[0183]

[0184] Table 20

[0185] Table 21 shows the basic parameters of the optical imaging lens according to the sixth embodiment of the present invention, where the radius of curvature, thickness, and focal length are all in millimeters.

[0186] Surface number Surface type Radius of curvature Thickness Focal length Refractive index Dispersion coefficient Conic coefficient OBJ Spherical surface Infinity 400.0000 STO Spherical surface Infinity -0.1950 S1 Aspherical surface 0.9421 0.4155 2.40 1.55 56.1 0.0641 S2 Aspherical surface 2.8403 0.0864 -51.7963 S3 Aspherical surface -40.4425 0.2200 -10.85 1.68 19.2 62.5033 S4 Aspherical surface 9.0073 0.2710 99.0000 S5 Aspherical surface 34.2734 0.2282 -15.66 1.67 20.4 99.0000 S6 Aspherical surface 7.9871 0.2540 47.3446 S7 Aspherical surface 15.0104 0.5721 1.94 1.55 56.1 83.2495 S8 Aspherical surface -1.1211 0.3189 -4.6109 S9 Aspherical surface -0.8186 0.2829 -1.53 1.54 55.7 -3.1741 S10 Aspherical surface -500.0000 0.1908 -1.0905 S11 Spherical surface Infinity 0.1100 1.51 64.2 S12 Spherical surface Infinity 0.2343 S13 Spherical surface Infinity

[0187] Table 21

[0188] The following Table 22 and Table 23 give the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 of each aspherical surface S1 - S10 of each aspherical lens that can be used in the sixth embodiment of the present invention. Among them, the aspherical surface type of each can be defined by the formula (1) given in Embodiment 1 above.

[0189]

[0190]

[0191] Table 22

[0192] Surface number A20 A22 A24 A26 A28 A30 S1 -7.3018E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 8.9896E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.6531E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.7411E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.0498E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -3.9928E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 9.8621E+01 -4.8536E+01 1.6430E+01 -3.6446E+00 4.7714E-01 -2.7949E-02 S8 2.0335E+01 -7.2229E+00 1.7759E+00 -2.8768E-01 2.7634E-02 -1.1927E-03 S9 5.4415E-01 -1.5835E-01 3.2030E-02 -4.2664E-03 3.3582E-04 -1.1819E-05 S10 -3.4637E-02 8.1608E-03 -1.2449E-03 1.1735E-04 -6.0500E-06 1.2284E-07

[0193] Table 23

[0194] Figure 27 Shown is the axial chromatic aberration curve of the optical imaging lens according to the sixth embodiment of the present invention, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 28 Shown is the astigmatism curve of the optical imaging lens according to the sixth embodiment of the present invention, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 29The distortion curve of the optical imaging lens in the sixth embodiment of the present invention is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 30 Shown is the longitudinal chromatic aberration curve of the optical imaging lens in the sixth embodiment of the present invention, which represents the deviation of different image heights on the imaging plane after the light passes through the lens. According to Figures 27 to 30 it can be known that the optical imaging lens provided in the sixth embodiment of the present invention can achieve good imaging quality.

[0195] In summary, in Embodiments 1-6 of the present invention, the optical parameters are as shown in Table 24 below:

[0196] Example parameters 1 2 3 4 5 6 f 2.61 2.67 2.70 2.71 2.74 2.71 f1 2.52 2.37 2.44 2.39 2.41 2.40 f2 430.72 -11.48 -9.63 -11.75 -12.10 -10.85 f3 -7.42 -14.98 -631.69 -17.16 -15.21 -15.66 f4 1.64 1.69 2.11 1.64 1.97 1.94 f5 -1.33 -1.33 -1.57 -1.29 -1.57 -1.53 TTL 3.13 3.19 3.18 3.20 3.21 3.19 ImgH 2.75 2.75 2.75 2.75 2.75 2.75 Semi - FOV 44.22 43.94 43.48 43.62 43.47 43.56 Fno 2.15 2.27 2.27 2.25 2.25 2.20

[0197] Table 24

[0198] In Embodiments 1-6 of the present invention, each conditional expression satisfies the conditions in Table 25 below:

[0199]

[0200] Table 25

[0201] The above description is only the preferred embodiments of the present invention and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present invention.

Claims

1. An optical imaging lens, characterized in that, The optical imaging lens has five lenses with optical powers. The five lenses are, in order from the object side to the image side: The first lens with a positive optical power, having a convex object side surface and a concave image side surface; The second lens with a negative optical power, having a concave object side surface and a concave image side surface; The third lens with a negative optical power; The fourth lens with a positive optical power, having a convex object side surface and a convex image side surface; The fifth lens with a negative optical power, having a concave object side surface; Among them, the axial distance TTL from the object side surface of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: 1.14 ≤ TTL / ImgH ≤ 1.17; The effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy: 2.83 ≤ |f / f1| + |f / f5| ≤ 3.24; The effective focal length f of the optical imaging lens and half of the maximum field of view Semi-FOV of the optical imaging lens satisfy: 6.63mm 2 ≤f 2 ×tan(Semi-FOV) ≤ 7.09mm 2 ; The central thickness CT4 of the fourth lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis satisfy: 1.82 ≤ CT4 / T45 ≤ 2.4; The combined focal length f123 of the first lens, the second lens, and the third lens and the radius of curvature R2 of the object side surface of the first lens satisfy: 1.1 ≤ f123 / R2 ≤ 1.

21.

2. The optical imaging lens according to claim 1, wherein The combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f1 of the first lens satisfy: 1.2 < f123 / f1 < 1.

4.

3. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R7 of the object side surface of the fourth lens and the effective focal length f of the optical imaging lens satisfy: 3.83 ≤ R7 / f ≤ 6.

71.

4. The optical imaging lens according to claim 1, wherein The sum ∑AT of the air gaps on the optical axis between any two adjacent lenses with optical powers among the lenses from the first lens to the lens closest to the imaging surface and the sum ∑CT of the central thicknesses of all lenses on the optical axis satisfy: 1.5 < ΣCT / ΣAT ≤ 2.

32.

5. The optical imaging lens according to claim 1, wherein The combined focal length f12 of the first lens and the second lens and the combined focal length f23 of the second lens and the third lens satisfy: -3.13 ≤ f23 / f12 ≤ -2.

18.

6. The optical imaging lens according to claim 1, wherein The axial distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens and the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens satisfy: 1.15 ≤ SAG52 / SAG42 ≤ 1.

4.

7. The optical imaging lens according to claim 1, wherein The perpendicular distance SD52 between the position of the maximum effective diameter of the image side surface of the fifth lens and the optical axis and the axial distance TD from the object side surface of the first lens to the image side surface of the last lens satisfy: 0.8 < SD52 / TD < 0.9.

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