Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens having optical power; a second lens having optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; and a sixth lens having optical power. The optical imaging lens has a maximum half-field-of-view (Semi-FOV) of 60°; a curvature radius of the object-side surface of the first lens and a curvature radius of the image-side surface of the first lens satisfy 2.5 < (R1-R2) / (R1 + R2) < 1.0; and a curvature radius of the object-side surface of the second lens and a curvature radius of the image-side surface of the second lens satisfy 1.5 < R4 / R3 < 2.5, thereby providing the optical imaging lens with characteristics such as a large field-of-view and minimal distortion.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and in particular to an optical imaging lens comprising six lenses. Background Art

[0002] With the increasing popularity of smart devices in recent years, people's requirements for mobile phone camera performance have become increasingly higher. The rear camera modules of mainstream flagship phones from major mobile phone brands are now often equipped with optical imaging lenses with ultra-wide angles to meet users' needs for wide-field-of-view photography.

[0003] However, due to the large distortion of ultra-wide-angle optical imaging lenses, the captured image will be obviously deformed, resulting in inconsistent image proportions, and the distortion needs to be corrected with the help of relevant post-production software.

[0004] Therefore, the market demand for optical imaging lenses with ultra-wide angle and small distortion performance is increasing. Summary of the Invention

[0005] The present application provides an optical imaging lens suitable for portable electronic products that can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art, such as an optical imaging lens with an ultra-wide angle and ultra-low distortion.

[0006] One aspect of the present application provides an optical imaging lens. The optical imaging lens may include, in order from the object side to the image side along the optical axis: a first lens having optical power; a second lens having optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; and a sixth lens having optical power. The maximum half field of view (Semi-FOV) of the optical imaging lens may satisfy: Semi-FOV ≥ 60°; a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens may satisfy: -2.5 < (R1 - R2) / (R1 + R2) < -1.0; and a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens may satisfy: 1.5 < R4 / R3 < 2.5.

[0007] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy: -2.5<f2 / f1<-1.5.

[0008] In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: -2.5<f4 / f3<-1.5.

[0009] In one embodiment, the distance TTL from the object-side surface of the first lens to the imaging surface on the optical axis and the effective focal length f6 of the sixth lens may satisfy: -3.5<TTL / f6<-2.5.

[0010] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens may satisfy: -2.5<R5 / R6<-1.5.

[0011] In one embodiment, a center thickness CT1 of the first lens on the optical axis and an air interval T12 between the first lens and the second lens on the optical axis may satisfy the following: 1.0<T12 / CT1<1.5.

[0012] In one embodiment, a center thickness CT3 of the third lens on the optical axis and an air interval T34 between the third lens and the fourth lens on the optical axis may satisfy: 2.0<CT3 / T34<3.5.

[0013] In one embodiment, a center thickness CT4 of the fourth lens on the optical axis and an air interval T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.5<CT4 / T45<3.0.

[0014] In one embodiment, the Abbe number V2 of the second lens and the curvature radius R4 of the image side surface of the second lens may satisfy: 4.0 mm -1 <V2 / R4<6.5mm -1 .

[0015] In one embodiment, the refractive index N2 of the second lens and the center thickness CT2 of the second lens on the optical axis may satisfy: 3.0 mm -1 <N2 / CT2<5.5mm -1 .

[0016] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens and an Abbe number V4 of the fourth lens may satisfy: 0<R7 / V4<1.0 mm.

[0017] In one embodiment, the curvature radius R10 of the image side surface of the fifth lens and the refractive index N5 of the fifth lens may satisfy: -2.5 mm -1 <N5 / R10<-1.5mm -1 .

[0018] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens element and a refractive index N6 of the sixth lens element may satisfy the relationship: 1.0 mm < R11 / N6 < 1.5 mm.

[0019] Another aspect of the present application provides an optical imaging lens, which may include, in order from the object side to the image side along the optical axis: a first lens having optical power; a second lens having optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; and a sixth lens having optical power, wherein the maximum half field of view (Semi-FOV) of the optical imaging lens may satisfy: Semi-FOV ≥ 60°; the curvature radius R1 of the object-side surface of the first lens and the curvature radius R2 of the image-side surface of the first lens may satisfy: -2.5 < (R1 - R2) / (R1 + R2) < -1.0; and the center thickness CT3 of the third lens on the optical axis and the air gap T34 between the third lens and the fourth lens on the optical axis may satisfy: 2.0 < CT3 / T34 < 3.5.

[0020] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy: -2.5<f2 / f1<-1.5.

[0021] In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: -2.5<f4 / f3<-1.5.

[0022] In one embodiment, the distance TTL from the object-side surface of the first lens to the imaging surface on the optical axis and the effective focal length f6 of the sixth lens may satisfy: -3.5<TTL / f6<-2.5.

[0023] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens may satisfy: -2.5<R5 / R6<-1.5.

[0024] In one embodiment, a center thickness CT1 of the first lens on the optical axis and an air interval T12 between the first lens and the second lens on the optical axis may satisfy the following: 1.0<T12 / CT1<1.5.

[0025] In one embodiment, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens may satisfy: 1.5<R4 / R3<2.5.

[0026] In one embodiment, a center thickness CT4 of the fourth lens on the optical axis and an air interval T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.5<CT4 / T45<3.0.

[0027] In one embodiment, the Abbe number V2 of the second lens and the curvature radius R4 of the image side surface of the second lens may satisfy: 4.0 mm -1 <V2 / R4<6.5mm -1 .

[0028] In one embodiment, the refractive index N2 of the second lens and the center thickness CT2 of the second lens on the optical axis may satisfy: 3.0 mm -1 <N2 / CT2<5.5mm -1 .

[0029] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens and an Abbe number V4 of the fourth lens may satisfy: 0<R7 / V4<1.0 mm.

[0030] In one embodiment, the curvature radius R10 of the image side surface of the fifth lens and the refractive index N5 of the fifth lens may satisfy: -2.5 mm -1 <N5 / R10<-1.5mm -1 .

[0031] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens element and a refractive index N6 of the sixth lens element may satisfy the relationship: 1.0 mm < R11 / N6 < 1.5 mm.

[0032] The optical imaging lens provided in this application uses multiple lenses, such as the first lens to the sixth lens. By reasonably controlling the curvature radius, center thickness, Abbe number and refractive index of each lens in the optical imaging lens, the optical imaging lens can achieve characteristics such as ultra-wide angle, ultra-small distortion and high imaging quality. At the same time, each lens has a compact structure and good molding and processing performance, which can improve the production yield of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0034] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application;

[0035] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0036] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application;

[0037] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0038] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application;

[0039] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0040] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application;

[0041] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0042] Figure 9 1 shows a schematic structural diagram of an optical imaging lens according to Example 5 of the present application;

[0043] 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0044] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application;

[0045] 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0046] Figure 13 shows a schematic structural diagram of an optical imaging lens according to Example 7 of the present application; and

[0047] 14A to 14D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown. DETAILED DESCRIPTION

[0048] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0049] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0050] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0051] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0052] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0053] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0054] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0055] The features, principles and other aspects of the present application are described in detail below.

[0056] An optical imaging lens according to an exemplary embodiment of the present application may include six lenses having optical power: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged sequentially along the optical axis from the object side to the image side. Each adjacent pair of lenses, from the first lens to the sixth lens, may have an air space between them.

[0057] In an exemplary embodiment, the first lens has positive or negative optical power; the second lens has positive or negative optical power; the third lens has positive or negative optical power; the fourth lens has positive or negative optical power; the fifth lens has positive or negative optical power; and the sixth lens has positive or negative optical power. Properly matching the optical power and surface shape of each lens in the optical system ensures the rationality of the optical imaging lens structure.

[0058] In example embodiments, the object-side surface of the first lens may be a concave surface, and the image-side surface may be a concave surface.

[0059] In example embodiments, the object-side surface of the second lens may be convex, and the image-side surface may be concave.

[0060] In example embodiments, the object-side surface of the third lens may be a convex surface, and the image-side surface may be a convex surface.

[0061] In example embodiments, the object-side surface of the fourth lens may be convex, and the image-side surface may be concave.

[0062] In example embodiments, the image-side surface of the fifth lens may be a convex surface.

[0063] In example embodiments, the object-side surface of the sixth lens may be convex, and the image-side surface may be concave.

[0064] In an exemplary embodiment, the maximum half-field-of-view (Semi-FOV) of the optical imaging lens may satisfy the following conditions: Semi-FOV ≥ 60°. For example, 60° ≤ Semi-FOV < 65°. Properly controlling the maximum half-field-of-view (Semi-FOV) of the optical imaging lens can enable the optical imaging lens to have an extremely large field-of-view.

[0065] In an exemplary embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy the following relationship: -2.5 < (R1-R2) / (R1+R2) < -1.0. For example, -2.5 < (R1-R2) / (R1+R2) < -1.4. By controlling the ratio of the radius of curvature of the object-side surface to the image-side surface of the first lens within a reasonable numerical range, the contribution of the object-side surface and the image-side surface of the first lens to the amount of astigmatism of the optical imaging system can be effectively controlled, thereby effectively and reasonably controlling the imaging quality of the intermediate field of view and aperture zone of the optical imaging system.

[0066] In an exemplary embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy the following relationship: 1.5 < R4 / R3 < 2.5. For example, 1.7 < R4 / R3 < 2.4. By controlling the ratio of the radius of curvature of the object-side surface to the image-side surface of the second lens within a reasonable numerical range, the total deflection angle of the object-side and image-side surfaces of the second lens at the edge of the field of view of the optical imaging lens can be kept within a reasonable range, thereby effectively reducing the sensitivity of the optical imaging system.

[0067] In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy the following relationship: -2.5 < f2 / f1 < -1.5. For example, -2.5 < f2 / f1 < -1.9. By controlling the ratio of the effective focal lengths of the first lens to the second lens within a reasonable range, the optical powers of the first and second lenses in the optical imaging lens can be rationally distributed spatially, thereby reducing aberrations in the optical imaging lens.

[0068] In an exemplary embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy the following relationship: -2.5 < f4 / f3 < -1.5. By controlling the ratio of the effective focal lengths of the third lens to the fourth lens within a reasonable range, the optical powers of the third and fourth lenses in the optical imaging lens can be rationally distributed spatially, thereby reducing aberrations of the optical imaging lens.

[0069] In an exemplary embodiment, the distance TTL from the object-side surface of the first lens to the imaging plane on the optical axis and the effective focal length f6 of the sixth lens may satisfy the following: -3.5 < TTL / f6 < -2.5. For example, -3.1 < TTL / f6 < -2.7. By controlling the ratio of the total optical length of the optical imaging lens to the effective focal length of the sixth lens within a reasonable range, the third-order positive spherical aberration and fifth-order negative spherical aberration of the optical imaging lens can be kept within a reasonable range. This balances the remaining spherical aberration generated by the first through fifth lenses in the optical imaging system, thereby improving the imaging quality of the on-axis field of view of the optical imaging lens.

[0070] In an exemplary embodiment, the radius of curvature R5 of the object-side surface of the third lens element and the radius of curvature R6 of the image-side surface of the third lens element may satisfy the following relationship: -2.5 < R5 / R6 < -1.5. By controlling the ratio of the radii of curvature of the object-side surface to the image-side surface of the third lens element within a reasonable range, the aberration contributions of the object-side and image-side surfaces of the third lens element in the optical imaging system can be effectively controlled, effectively balancing aberrations related to aperture zones in the optical imaging system, and thereby significantly improving the imaging quality of the optical imaging lens.

[0071] In an exemplary embodiment, the central thickness CT1 of the first lens on the optical axis and the air spacing T12 between the first and second lenses on the optical axis may satisfy the following: 1.0 < T12 / CT1 < 1.5. For example, 1.0 < T12 / CT1 < 1.2. By controlling the ratio of the central thickness of the first lens on the optical axis to the air spacing between the first and second lenses on the optical axis within a reasonable range, the field curvature and distortion of the optical imaging system can be effectively maintained, thereby ensuring good off-axis imaging quality within the optical imaging lens.

[0072] In an exemplary embodiment, the central thickness CT3 of the third lens on the optical axis and the air spacing T34 between the third and fourth lenses on the optical axis may satisfy the following relationship: 2.0 < CT3 / T34 < 3.5. By controlling the ratio of the central thickness of the third lens on the optical axis to the air spacing between the third and fourth lenses on the optical axis within a reasonable range, the processing and molding of the third lens is facilitated.

[0073] In an exemplary embodiment, the center thickness CT4 of the fourth lens on the optical axis and the air spacing T45 between the fourth and fifth lenses on the optical axis may satisfy the following: 1.5 < CT4 / T45 < 3.0. For example, 1.8 < CT4 / T45 < 3.0. By controlling the ratio of the center thickness of the fourth lens on the optical axis to the air spacing between the fourth and fifth lenses on the optical axis within a reasonable range, the processing and molding of the fourth lens is facilitated.

[0074] In an exemplary embodiment, the Abbe number V2 of the second lens and the curvature radius R4 of the image side surface of the second lens may satisfy: 4.0 mm -1 <V2 / R4<6.5mm -1 By controlling the ratio of the Abbe number of the second lens element to the radius of curvature of its image-side surface within a reasonable numerical range, it is beneficial to correct the axial spherical aberration of the optical imaging system, so that the optical imaging lens can obtain better imaging quality.

[0075] In an exemplary embodiment, the refractive index N2 of the second lens and the center thickness CT2 of the second lens on the optical axis may satisfy: 3.0 mm -1 <N2 / CT2<5.5mm -1 By controlling the ratio of the refractive index of the second lens element to its central thickness on the optical axis within a reasonable range, it is beneficial to correct the vertical axis spherical aberration of the optical imaging system, so that the optical imaging lens can obtain better imaging quality.

[0076] In an exemplary embodiment, the radius of curvature R7 of the object-side surface of the fourth lens element and the Abbe number V4 of the fourth lens element may satisfy the following conditions: 0 < R7 / V4 < 1.0 mm. For example, 0.2 < R7 / V4 < 0.8 mm. By controlling the ratio of the Abbe number of the fourth lens element to the radius of curvature of its object-side surface within a reasonable range, axial chromatic aberration of the optical imaging system can be corrected, resulting in better imaging quality for the optical imaging lens.

[0077] In an exemplary embodiment, the curvature radius R10 of the image-side surface of the fifth lens and the refractive index N5 of the fifth lens may satisfy: -2.5 mm -1 <N5 / R10<-1.5mm -1 By controlling the ratio of the refractive index of the fifth lens element to the radius of curvature of its image-side surface within a reasonable numerical range, it is beneficial to correct the vertical axis spherical aberration of the optical imaging system, so that the optical imaging lens can obtain better imaging quality.

[0078] In an exemplary embodiment, the radius of curvature R11 of the object-side surface of the sixth lens element and the refractive index N6 of the sixth lens element may satisfy the following conditions: 1.0 mm < R11 / N6 < 1.5 mm. For example, 1.3 mm < R11 / N6 < 1.5 mm. By controlling the ratio of the refractive index of the sixth lens element to the radius of curvature of its object-side surface within a reasonable range, vertical spherical chromatic aberration of the optical imaging system can be corrected, thereby achieving better imaging quality in the optical imaging lens system.

[0079] In an exemplary embodiment, the optical imaging lens may further include an aperture. The aperture may be positioned appropriately as needed. For example, the aperture may be positioned between the second lens and the third lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0080] This application proposes an optical imaging lens with characteristics such as an ultra-large image area and an ultra-wide angle of view. The optical imaging lens according to the above-described embodiment of this application can utilize multiple lens elements, such as the six lens elements described above. By rationally allocating the focal power, surface shape, center thickness of each lens element, and the on-axis spacing between lenses, the lens element can effectively converge incident light, reduce the overall optical length of the imaging lens, and improve its machinability, making the optical imaging lens more suitable for production and processing.

[0081] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspherical mirror surfaces.

[0082] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone 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.

[0083] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while six lenses are described in the embodiments, the optical imaging lens is not limited to six lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0084] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0085] Example 1

[0086] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 1 is a schematic structural diagram of an optical imaging lens according to Example 1 of the present application.

[0087] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0088] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0089] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness and focal length are all millimeters (mm).

[0090]

[0091] Table 1

[0092] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.77 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.84 mm, and half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm. The maximum half field of view Semi-FOV of the optical imaging lens is 60.2°, and the aperture value Fno of the optical imaging lens is 2.23.

[0093] In Example 1, the object-side surface and the image-side surface of any lens among the first lens E1 to the sixth lens E6 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0094]

[0095] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Tables 2 and 3 below give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A80, A81, A9, A10, A11, A12, A13, A14, A15 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26、A 28 and A 30 .

[0096]

[0097]

[0098] Table 2

[0099] Face number A18 A20 A822 A24 A26 A28 A30 S1 -1.6605E-01 5.1329E-02 -1.1636E-02 1.8758E-03 -2.0335E-04 1.3274E-05 -3.9387E-07 S2 1.8149E+02 -1.4738E+02 8.1464E+01 -2.9415E+01 6.3428E+00 -6.5912E-01 1.3460E-02 S3 -1.2010E+01 2.7900E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.8772E+02 1.8406E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.8606E+04 -1.7846E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.1058E+03 4.4525E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -4.0391E+03 2.5970E+03 -7.1365E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -3.6947E+02 1.9437E+02 -5.8837E+01 7.7983E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 2.8650E+03 -2.9698E+03 2.1758E+03 -1.1055E+03 3.7130E+02 -7.4241E+01 6.6992E+00 S10 -2.0197E+01 8.9462E+00 -2.5495E+00 4.2176E-01 -3.0965E-02 0.0000E+00 0.0000E+00 S11 -1.9631E+01 9.0375E+00 -3.0050E+00 7.0257E-01 -1.0955E-01 1.0225E-02 -4.3202E-04 S12 2.5953E-01 -6.4205E-02 1.1576E-02 -1.4769E-03 1.2624E-04 -6.4824E-06 1.5112E-07

[0100] Table 3

[0101] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0102] Example 2

[0103] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0104] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0105] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0106] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.79 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.84 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 62.0°, and the aperture value Fno of the optical imaging lens is 2.23.

[0107] Table 4 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of curvature radius, thickness and focal length are all millimeters (mm).

[0108]

[0109] Table 4

[0110] In Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 5 and 6 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0111] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.2012E-01 -5.9871E-01 8.9175E-01 -1.1187E+00 1.0886E+00 -7.9836E-01 4.3736E-01 S2 5.0733E-01 -8.4296E-01 2.4166E+00 -7.1145E+00 1.6562E+01 -2.8593E+01 3.6485E+01 S3 5.0895E-02 -3.2962E-01 1.4126E+00 -5.3923E+00 1.3655E+01 -2.2096E+01 2.1878E+01 S4 1.1253E-01 -1.5878E-01 1.2968E+00 -1.1310E+01 6.9524E+01 -2.5738E+02 5.5887E+02 S5 1.2990E-02 2.8342E-01 -4.4378E+00 3.2156E+01 -1.4797E+02 3.8825E+02 -4.5557E+02 S6 -2.5775E-01 7.9012E-02 2.1853E+00 -2.7219E+01 1.4578E+02 -4.4794E+02 8.0080E+02 S7 -6.4077E-01 5.5685E-01 4.6277E+00 -5.8730E+01 3.0799E+02 -9.4449E+02 1.7906E+03 S8 -5.8016E-01 5.3909E-01 3.8258E+00 -2.6460E+01 8.5620E+01 -1.7009E+02 2.1966E+02 S9 -1.3798E-01 -7.6897E-01 6.1037E+00 -1.7518E+01 2.1272E+01 1.5031E+01 -1.0288E+02 S10 3.1211E-01 -1.3073E+00 5.2122E+00 -1.2856E+01 1.9429E+01 -1.6897E+01 5.4433E+00 S11 -3.9750E-01 -8.1861E-01 6.5768E+00 -1.9516E+01 3.5846E+01 -4.5395E+01 4.1251E+01 S12 -1.2594E+00 2.2734E+00 -3.2554E+00 3.4955E+00 -2.7952E+00 1.6650E+00 -7.3960E-01

[0112] Table 5

[0113] Face number A18 A20 A822 A24 A26 A28 A30 S1 -1.7807E-01 5.3428E-02 -1.1620E-02 1.7771E-03 -1.8079E-04 1.0959E-05 -2.9876E-07 S2 -3.5322E+01 2.6989E+01 -1.6708E+01 8.1700E+00 -2.8801E+00 6.2671E-01 -6.1594E-02 S3 -1.1968E+01 2.7464E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -6.4979E+02 3.0977E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.3618E+02 6.0799E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -7.7681E+02 3.1569E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -2.0646E+03 1.3244E+03 -3.6118E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -1.8509E+02 9.8253E+01 -2.9842E+01 3.9551E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 1.9004E+02 -2.0435E+02 1.4213E+02 -6.4711E+01 1.8560E+01 -3.0150E+00 2.0755E-01 S10 4.5717E+00 -6.3315E+00 3.2930E+00 -8.4470E-01 8.8128E-02 0.0000E+00 0.0000E+00 S11 -2.7325E+01 1.3215E+01 -4.6142E+00 1.1321E+00 -1.8501E-01 1.8072E-02 -7.9769E-04 S12 2.4459E-01 -5.9791E-02 1.0635E-02 -1.3359E-03 1.1219E-04 -5.6472E-06 1.2873E-07

[0114] Table 6

[0115] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0116] Example 3

[0117] The following reference Figures 5 to 6D The optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0118] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0119] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0120] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.75 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.77 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 61.3°, and the aperture value Fno of the optical imaging lens is 2.23.

[0121] Table 7 shows the basic parameters of the optical imaging lens of Example 3, where the units of curvature radius, thickness and focal length are all millimeters (mm).

[0122]

[0123]

[0124] Table 7

[0125] In Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 8 and 9 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0126] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.1805E-01 -5.8907E-01 8.6664E-01 -1.0804E+00 1.0507E+00 -7.7227E-01 4.2358E-01 S2 5.4245E-01 -1.2295E+00 5.4459E+00 -2.3657E+01 7.8113E+01 -1.8873E+02 3.3326E+02 S3 5.6733E-02 -3.5847E-01 1.5136E+00 -5.8797E+00 1.5281E+01 -2.5356E+01 2.5653E+01 S4 9.4390E-02 -2.4754E-02 -3.2426E-02 -1.0746E+00 1.6647E+01 -7.8694E+01 1.8010E+02 S5 1.1009E-02 3.8441E-01 -7.8846E+00 8.1174E+01 -5.4757E+02 2.3115E+03 -5.9068E+03 S6 -2.4950E-01 1.4121E-01 5.0466E-02 -8.5724E+00 5.7278E+01 -1.9686E+02 3.7484E+02 S7 -6.1562E-01 2.6925E-01 6.5968E+00 -6.5544E+01 3.1070E+02 -8.8776E+02 1.6000E+03 S8 -5.7805E-01 2.1176E-01 5.8741E+00 -3.1422E+01 8.7667E+01 -1.5472E+02 1.8137E+02 S9 -2.0028E-01 -3.6586E-01 1.4346E+00 1.5812E+01 -1.1558E+02 3.7663E+02 -7.6477E+02 S10 3.0714E-01 -1.1017E+00 3.1250E+00 -3.6489E+00 -4.5670E+00 2.4104E+01 -4.2143E+01 S11 -3.4921E-01 -8.0743E-01 5.7584E+00 -1.5800E+01 2.6941E+01 -3.1702E+01 2.6775E+01 S12 -1.2101E+00 2.1392E+00 -2.9949E+00 3.1511E+00 -2.4738E+00 1.4481E+00 -6.3247E-01

[0127] Table 8

[0128]

[0129]

[0130] Table 9

[0131] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 6D The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0132] Example 4

[0133] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0134] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0135] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0136] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.70 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.68 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 61.5°, and the aperture value Fno of the optical imaging lens is 2.23.

[0137] Table 10 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness and focal length are all millimeters (mm).

[0138]

[0139]

[0140] Table 10

[0141] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 11 and 12 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A22 、A 24 、A 26 、A 28 and A 30 .

[0142] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.2140E-01 -5.9199E-01 8.7770E-01 -1.1095E+00 1.0983E+00 -8.2592E-01 4.6735E-01 S2 5.4833E-01 -1.4784E+00 8.9972E+00 -4.6884E+01 1.7184E+02 -4.4378E+02 8.2197E+02 S3 5.1487E-02 -3.3021E-01 1.4282E+00 -5.4670E+00 1.3941E+01 -2.2790E+01 2.2900E+01 S4 8.9384E-02 -3.7922E-02 4.0529E-01 -6.1368E+00 4.5057E+01 -1.7669E+02 3.9509E+02 S5 -3.0377E-03 8.5596E-01 -1.9740E+01 2.6323E+02 -2.2647E+03 1.2241E+04 -4.0163E+04 S6 -2.1443E-01 -1.3307E+00 2.0332E+01 -1.6807E+02 8.3246E+02 -2.5527E+03 4.7218E+03 S7 -5.7829E-01 -8.8809E-01 1.7840E+01 -1.2665E+02 5.1671E+02 -1.3244E+03 2.1697E+03 S8 -6.0608E-01 1.0397E+00 -4.8363E-01 -2.4292E+00 1.4351E+00 1.7031E+01 -4.8440E+01 S9 -2.2487E-01 1.3337E-01 1.7732E+00 -1.0887E+01 5.9418E+01 -2.3489E+02 6.0402E+02 S10 3.8070E-01 -1.9048E+00 8.4736E+00 -2.6433E+01 5.8976E+01 -9.4326E+01 1.0785E+02 S11 -3.4366E-01 -8.1309E-01 5.6693E+00 -1.5396E+01 2.6098E+01 -3.0614E+01 2.5804E+01 S12 -1.2501E+00 2.2430E+00 -3.1758E+00 3.3710E+00 -2.6630E+00 1.5646E+00 -6.8421E-01

[0143] Table 11

[0144] Face number A18 A20 A822 A24 A26 A28 A30 S1 -1.9791E-01 6.2169E-02 -1.4243E-02 2.3074E-03 -2.5001E-04 1.6228E-05 -4.7654E-07 S2 -1.1041E+03 1.0765E+03 -7.5323E+02 3.6815E+02 -1.1918E+02 2.2937E+01 -1.9846E+00 S3 -1.2806E+01 3.0326E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -4.7613E+02 2.3923E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 7.2843E+04 -5.5917E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -4.8263E+03 2.0916E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -2.2137E+03 1.2823E+03 -3.2093E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 6.1930E+01 -4.3229E+01 1.6017E+01 -2.4747E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.0301E+03 1.1954E+03 -9.5211E+02 5.1342E+02 -1.7939E+02 3.6681E+01 -3.3337E+00 S10 -8.7186E+01 4.8535E+01 -1.7658E+01 3.7726E+00 -3.5847E-01 0.0000E+00 0.0000E+00 S11 -1.5855E+01 7.1088E+00 -2.2998E+00 5.2256E-01 -7.9084E-02 7.1551E-03 -2.9265E-04 S12 2.2230E-01 -5.3259E-02 9.2544E-03 -1.1308E-03 9.1845E-05 -4.4381E-06 9.6204E-08

[0145] Table 12

[0146] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8D The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0147] Example 5

[0148] The following reference Figures 9 to 10D The optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

[0149] like Figure 9 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0150] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0151] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.81 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.71 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 60.6°, and the aperture value Fno of the optical imaging lens is 2.23.

[0152] Table 13 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius, thickness and focal length are all millimeters (mm).

[0153]

[0154] Table 13

[0155] In Example 5, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 14 and 15 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0156] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.2495E-01 -6.1532E-01 9.4601E-01 -1.2258E+00 1.2302E+00 -9.2837E-01 5.2185E-01 S2 5.3095E-01 -9.6566E-01 3.1391E+00 -1.0079E+01 2.4504E+01 -4.1224E+01 4.4993E+01 S3 6.7855E-02 -3.8673E-01 1.7594E+00 -8.3742E+00 2.6603E+01 -5.3161E+01 6.4038E+01 S4 1.1825E-01 -1.5753E-01 6.7002E-01 -5.8505E+00 3.9667E+01 -1.4869E+02 3.0891E+02 S5 8.4246E-03 3.7170E-01 -7.1345E+00 6.9128E+01 -4.3668E+02 1.7251E+03 -4.1238E+03 S6 -2.5761E-01 1.6119E-01 3.2161E-01 -1.0996E+01 6.6411E+01 -2.1315E+02 3.8443E+02 S7 -6.3510E-01 5.9478E-01 2.7180E+00 -3.8129E+01 1.9349E+02 -5.6815E+02 1.0345E+03 S8 -5.6333E-01 3.6772E-01 4.2586E+00 -2.4777E+01 7.2568E+01 -1.3363E+02 1.6270E+02 S9 -1.2081E-01 -8.5145E-01 5.9380E+00 -1.4005E+01 6.5178E+00 4.7126E+01 -1.4575E+02 S10 3.2771E-01 -1.4400E+00 5.6533E+00 -1.3232E+01 1.7889E+01 -1.1282E+01 -3.4298E+00 S11 -4.0229E-01 -9.9110E-01 7.6173E+00 -2.2821E+01 4.2697E+01 -5.5316E+01 5.1577E+01 S12 -1.2946E+00 2.3598E+00 -3.4152E+00 3.7085E+00 -2.9999E+00 1.8080E+00 -8.1232E-01

[0157] Table 14

[0158] Face number A18 A20 A822 A24 A26 A28 A30 S1 -2.1730E-01 6.6433E-02 -1.4659E-02 2.2627E-03 -2.3075E-04 1.3894E-05 -3.7135E-07 S2 -2.7421E+01 1.8247E+00 1.1944E+01 -1.0677E+01 4.6400E+00 -1.0732E+00 1.0642E-01 S3 -4.2016E+01 1.1408E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.2988E+02 1.3953E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 5.4063E+03 -2.9652E+03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -3.6925E+02 1.4659E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.1532E+03 7.1943E+02 -1.9144E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -1.3112E+02 6.7388E+01 -2.0020E+01 2.6173E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 2.2862E+02 -2.3075E+02 1.5837E+02 -7.4033E+01 2.2700E+01 -4.1350E+00 3.4040E-01 S10 1.2773E+01 -1.1020E+01 4.9241E+00 -1.1610E+00 1.1428E-01 0.0000E+00 0.0000E+00 S11 -3.5128E+01 1.7487E+01 -6.2868E+00 1.5872E+00 -2.6666E-01 2.6741E-02 -1.2099E-03 S12 2.7150E-01 -6.6995E-02 1.2010E-02 -1.5178E-03 1.2804E-04 -6.4640E-06 1.4760E-07

[0159] Table 15

[0160] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 10D The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0161] Example 6

[0162] The following reference Figures 11 to 12D The optical imaging lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0163] like Figure 11 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0164] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0165] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.85 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.83 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 60.0°, and the aperture value Fno of the optical imaging lens is 2.23.

[0166] Table 16 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness and focal length are all millimeters (mm).

[0167]

[0168] Table 16

[0169] In Example 6, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 17 and 18 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0170]

[0171]

[0172] Table 17

[0173] Face number A18 A20 A822 A24 A26 A28 A30 S1 -2.3477E-01 7.2727E-02 -1.6375E-02 2.6046E-03 -2.7733E-04 1.7733E-05 -5.1480E-07 S2 8.1818E+02 -7.4984E+02 4.8951E+02 -2.2192E+02 6.6351E+01 -1.1759E+01 9.3569E-01 S3 -1.2025E+01 2.7504E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.8957E+02 1.8322E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 3.3480E+04 -2.1655E+04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.1500E+03 4.4418E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -2.3217E+03 1.3770E+03 -3.5217E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -1.4735E+01 -9.1063E+00 7.7686E+00 -1.6717E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -8.8097E+02 9.2971E+02 -6.9911E+02 3.6288E+02 -1.2323E+02 2.4609E+01 -2.1897E+00 S10 -2.3078E+01 8.5171E+00 -1.8804E+00 2.0556E-01 -5.9066E-03 0.0000E+00 0.0000E+00 S11 -2.8504E+01 1.3807E+01 -4.8414E+00 1.1958E+00 -1.9723E-01 1.9487E-02 -8.7181E-04 S12 2.4561E-01 -5.6407E-02 9.0095E-03 -9.4876E-04 5.9121E-05 -1.6468E-06 -2.7321E-10

[0174] Table 18

[0175] Figure 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 12D The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0176] Example 7

[0177] The following reference Figures 13 to 14D The optical imaging lens according to Example 7 of the present application is described. Figure 13A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0178] like Figure 13 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0179] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is ultimately imaged on the imaging surface S15.

[0180] In this embodiment, the total effective focal length of the optical imaging lens is f = 1.90 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.79 mm, half the diagonal length of the effective pixel area on the imaging surface S15 is ImgH = 2.93 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 60.0°, and the aperture value Fno of the optical imaging lens is 2.23.

[0181] Table 19 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness and focal length are all millimeters (mm).

[0182]

[0183] Table 19

[0184] In Example 7, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are aspherical surfaces. Tables 20 and 21 below list the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28and A 30 .

[0185] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.1452E-01 -5.9030E-01 9.3404E-01 -1.2790E+00 1.3564E+00 -1.0746E+00 6.3122E-01 S2 4.5301E-01 1.7574E-02 -4.4233E+00 2.8332E+01 -1.0782E+02 2.7594E+02 -4.9492E+02 S3 6.0422E-02 -3.6348E-01 1.4733E+00 -5.5739E+00 1.4235E+01 -2.3255E+01 2.3213E+01 S4 1.0292E-01 -1.0450E-01 5.2918E-01 -6.5798E+00 4.9875E+01 -1.9951E+02 4.4537E+02 S5 -5.5547E-03 7.9415E-01 -1.7215E+01 2.0305E+02 -1.4979E+03 6.8317E+03 -1.8714E+04 S6 -2.1953E-01 -1.1273E-01 2.1583E+00 -1.8928E+01 8.8578E+01 -2.5732E+02 4.4900E+02 S7 -5.5145E-01 -1.2571E+00 2.1000E+01 -1.3929E+02 5.4379E+02 -1.3561E+03 2.1922E+03 S8 -4.8066E-01 -2.6582E-02 3.9811E+00 -1.3513E+01 2.0210E+01 -7.2746E+00 -2.2305E+01 S9 1.0278E-01 -1.6276E+00 8.6270E+00 -2.9171E+01 8.7122E+01 -2.3270E+02 4.8508E+02 S10 3.5949E-01 -1.4309E+00 5.1872E+00 -1.2561E+01 2.0067E+01 -2.0204E+01 1.0916E+01 S11 -3.0132E-01 -7.2949E-01 4.7074E+00 -1.2050E+01 1.9269E+01 -2.1314E+01 1.6939E+01 S12 -1.2977E+00 2.3619E+00 -3.4080E+00 3.7011E+00 -2.9982E+00 1.8095E+00 -8.1404E-01

[0186] Table 20

[0187]

[0188]

[0189] Table 21

[0190] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 14D The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0191] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 22.

[0192] Conditional formula / Example 1 2 3 4 5 6 7 (R1-R2) / (R1+R2) -1.84 -1.87 -1.49 -2.08 -1.55 -2.44 -1.84 R4 / R3 2.30 1.81 2.17 2.36 1.90 2.23 2.03 f2 / f1 -2.03 -2.38 -2.38 -1.99 -2.22 -2.03 -1.99 f4 / f3 -2.02 -2.22 -1.92 -1.98 -2.03 -1.76 -1.87 TTL / f6 -3.04 -3.06 -3.01 -2.83 -3.02 -2.82 -2.96 R5 / R6 -2.17 -1.74 -2.18 -2.16 -2.03 -2.05 -2.04 T12 / CT1 1.13 1.13 1.02 1.12 1.16 1.16 1.12 CT3 / T34 2.41 2.48 2.43 3.28 2.43 2.93 2.17 CT4 / T45 2.47 2.24 2.51 1.97 2.49 2.96 2.58 <![CDATA[V2 / R4(mm -1 )]]> 4.64 6.14 4.13 4.74 5.74 5.38 5.87 <![CDATA[N2 / CT2(mm -1 )]]> 3.24 3.22 3.68 3.22 5.39 3.29 3.30 R7 / V4(mm) 0.40 0.36 0.31 0.41 0.37 0.32 0.78 <![CDATA[N5 / R10(mm -1 )]]> -2.10 -2.03 -2.07 -2.10 -2.03 -1.80 -2.03 R11 / N6(mm) 1.40 1.35 1.39 1.37 1.34 1.35 1.37

[0193] Table 22

[0194] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having negative optical power, wherein the object-side surface and the image-side surface are concave; a second lens having positive refractive power, with a convex object-side surface and a concave image-side surface; The third lens has positive optical power, its object-side surface is convex, and its image-side surface is convex; a fourth lens element having negative optical power, whose object-side surface is convex and whose image-side surface is concave; a fifth lens element having positive optical power and a convex image-side surface; and a sixth lens element having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; The optical imaging lens comprises six lenses having optical power, and the optical imaging lens satisfies the following conditions: 60°≤Semi-FOV<65°; -2.44≤(R1-R2) / (R1+R2)≤-1.49; 1.81≤R4 / R3≤2.36; -2.22≤f4 / f3≤-1.76; 2.17≤CT3 / T34≤3.28; 1.97≤CT4 / T45<3.0, -2.38≤f2 / f1≤-1.99, Among them, Semi-FOV is the maximum half field of view of the optical imaging lens, R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens, f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, CT3 is the center thickness of the third lens on the optical axis, T34 is the air gap between the third lens and the fourth lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens.

2. The optical imaging lens according to claim 1, wherein: The distance TTL from the object side of the first lens to the imaging plane on the optical axis and the effective focal length f6 of the sixth lens satisfy: -3.06≤TTL / f6≤-2.

82.

3. The optical imaging lens according to claim 1, wherein: The curvature radius R5 of the object-side surface of the third lens and the curvature radius R6 of the image-side surface of the third lens satisfy: -2.18≤R5 / R6≤-1.

74.

4. The optical imaging lens according to claim 1, wherein: The center thickness CT1 of the first lens on the optical axis and the air interval T12 between the first lens and the second lens on the optical axis satisfy: 1.0<T12 / CT1≤1.

16.

5. The optical imaging lens according to claim 1, wherein: The Abbe number V2 of the second lens and the curvature radius R4 of the image-side surface of the second lens satisfy: 4.13mm -1 ≤V2 / R4≤6.14mm -1 。 6. The optical imaging lens according to claim 1, wherein: The refractive index N2 of the second lens and the center thickness CT2 of the second lens on the optical axis satisfy: <h2 style=";text-align:left;direction:ltr">3.22mm<h2 style=";text-align:left;direction:ltr"> -1 <h2 style=";text-align:left;direction:ltr"> ≤N2 / CT2≤5.39mm<h2 style=";text-align:left;direction:ltr"> -1 <h2 style=";text-align:left;direction:ltr"> 。 7. The optical imaging lens according to claim 1, wherein: The curvature radius R7 of the object-side surface of the fourth lens and the Abbe number V4 of the fourth lens satisfy: 0.31mm≤R7 / V4≤0.78mm.

8. The optical imaging lens according to claim 1, wherein: The curvature radius R10 of the image-side surface of the fifth lens and the refractive index N5 of the fifth lens satisfy: -2.10mm -1 ≤N5 / R10≤-1.80mm -1 。 9. The optical imaging lens according to claim 1, wherein: The curvature radius R11 of the object-side surface of the sixth lens and the refractive index N6 of the sixth lens satisfy: 1.34mm≤R11 / N6≤1.40mm。

Images