Optical imaging lens

Abstract

The present application relates to an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive focal power, whose image side surface is concave; a second lens with positive focal power, whose object side surface is convex; a third lens with negative focal power, whose object side surface is convex; a fourth lens with focal power; a fifth lens with positive focal power; and a sixth lens with negative focal power, whose object side surface is concave. The total effective focal length f of the optical imaging lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 7.0 mm <f×f / TTL<14.0mm。

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 gradual popularization of smart terminals in recent years, consumers have higher and higher requirements for the cameras installed in smart terminals. Nowadays, the rear cameras of major mainstream mobile phones usually consist of wide-angle, ultra-clear main camera and telephoto lens. Such rear cameras can switch between different modes through the "baton" zoom method of wide-angle-main camera-telephoto, thereby realizing the function of ultra-clear shooting.

[0003] The so-called "baton" zoom is not a true "continuous" zoom in the optical sense. At the same spatial frequency, the longer the effective focal length (EFL) of a telephoto lens is, the greater the magnification, and thus the higher the image quality. As the telephoto end of the zoom range, the longer the effective focal length of the telephoto lens is, the greater the achievable zoom range is. By using a lens with a long focal length, a wide range of zoom and ultra-clear shooting can be achieved. Summary of the invention

[0004] On the one hand, the present application provides such an optical imaging lens, which may include, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose image side surface is concave; a second lens with positive optical power, whose object side surface is convex; a third lens with negative optical power, whose object side surface is convex; a fourth lens with optical power; a fifth lens with positive optical power; and a sixth lens with negative optical power, whose object side surface is concave. The total effective focal length f of the optical imaging lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 7.0 mm <f×f / TTL<14.0mm。

[0005] In some embodiments, a distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens may satisfy: TTL / f<1.0.

[0006] In some embodiments, the effective focal length f1 of the first lens, 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: 0.8 <f1 / (R1+R2)<1.4。

[0007] In some embodiments, the effective focal length f2 of the second lens and the curvature radius R3 of the object side surface of the second lens may satisfy: 1.6 <f2 / R3<2.2。

[0008] In some embodiments, the effective focal length f6 of the sixth lens and the effective focal length f3 of the third lens may satisfy: 1.8 <f6 / f3<2.2。

[0009] In some embodiments, 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: 1.2<(R5+R6) / (R5-R6)<1.7.

[0010] In some embodiments, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 2.6 <TTL / (T34+T45)<3.6。

[0011] In some embodiments, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT31 of the object side surface of the third lens may satisfy: 1.2 <DT11 / DT31<1.5。

[0012] In some embodiments, the maximum effective radius DT61 of the object-side surface of the sixth lens, the maximum effective radius DT62 of the image-side surface of the sixth lens, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH may satisfy: 1.5<(DT61+DT62) / ImgH<1.8.

[0013] In some embodiments, the combined focal length f123 of the first lens, the second lens, and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy: 4.0 <f123 / (CT1+CT2+CT3)<4.8。

[0014] In some embodiments, the combined focal length f56 of the fifth lens and the sixth lens and the combined focal length f23 of the second lens and the third lens may satisfy: 0.3 <f56 / f23<2.9。

[0015] In some embodiments, the distance SAG21 from the intersection of the object side surface of the second lens and the optical axis to the vertex of the effective radius of the object side surface of the second lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis may satisfy: 0.8 <SAG21 / SAG32<1.7。

[0016] In some embodiments, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis, the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis, the distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens on the optical axis, and the distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens on the optical axis may satisfy: 0.6<(SAG51+SAG52) / (SAG61+SAG62)<1.0.

[0017] On the other hand, the present application provides such an optical lens, which may include, in order from the object side to the image side along the optical axis: a first lens with positive focal power, whose image side surface is concave; a second lens with positive focal power, whose object side surface is convex; a third lens with negative focal power, whose object side surface is convex; a fourth lens with focal power; a fifth lens with positive focal power; and a sixth lens with negative focal power, whose object side surface is concave. The effective focal length f1 of the first lens, 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: 0.8 <f1 / (R1+R2)<1.4。

[0018] In some embodiments, the total effective focal length f of the optical imaging lens and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 7.0 mm <f×f / TTL<14.0mm。

[0019] In some embodiments, a distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens may satisfy: TTL / f<1.0.

[0020] In some embodiments, the combined focal length f56 of the fifth lens and the sixth lens and the combined focal length f23 of the second lens and the third lens may satisfy: 0.3 <f56 / f23<2.9。

[0021] In some embodiments, the effective focal length f2 of the second lens and the curvature radius R3 of the object side surface of the second lens may satisfy: 1.6 <f2 / R3<2.2。

[0022] In some embodiments, the effective focal length f6 of the sixth lens and the effective focal length f3 of the third lens may satisfy: 1.8 <f6 / f3<2.2。

[0023] In some embodiments, 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: 1.2<(R5+R6) / (R5-R6)<1.7.

[0024] In some embodiments, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 2.6 <TTL / (T34+T45)<3.6。

[0025] In some embodiments, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT31 of the object side surface of the third lens may satisfy: 1.2 <DT11 / DT31<1.5。

[0026] In some embodiments, the maximum effective radius DT61 of the object-side surface of the sixth lens, the maximum effective radius DT62 of the image-side surface of the sixth lens, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH may satisfy: 1.5<(DT61+DT62) / ImgH<1.8.

[0027] In some embodiments, the combined focal length f123 of the first lens, the second lens, and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy: 4.0 <f123 / (CT1+CT2+CT3)<4.8。

[0028] In some embodiments, the distance SAG21 from the intersection of the object side surface of the second lens and the optical axis to the vertex of the effective radius of the object side surface of the second lens on the optical axis and the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis may satisfy: 0.8 <SAG21 / SAG32<1.7。

[0029] In some embodiments, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis, the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis, the distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens on the optical axis, and the distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens on the optical axis may satisfy: 0.6<(SAG51+SAG52) / (SAG61+SAG62)<1.0. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0032] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0033] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0034] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0035] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0036] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0037] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0038] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0039] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0040] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0041] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0042] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0043] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0044] FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0045] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0046] FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown. DETAILED DESCRIPTION

[0047] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only 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.

[0048] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0049] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0050] In this article, 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging side is called the image side of the lens.

[0051] 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 exclude 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 listed 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.

[0052] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formalized sense unless expressly so defined herein.

[0053] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will detail this application with reference to the accompanying drawings and in conjunction with the embodiments.

[0054] The features, principles and other aspects of this application are described in detail below.

[0055] The optical imaging lens according to an exemplary embodiment of this application may include six lenses with optical powers, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. These six lenses are arranged in sequence from the object side to the image side along the optical axis of the optical imaging lens, and there may be an air gap between any two adjacent lenses.

[0056] In the exemplary embodiment, the first lens may have a positive optical power, and its image side may be concave; the second lens may have a positive optical power, and its object side may be convex; the third lens may have a negative optical power, and its object side may be convex; the fourth lens may have an optical power; the fifth lens may have a positive optical power; and the sixth lens may have a negative optical power, and its object side may be concave. Reasonably matching the optical powers and surface types of the lenses in the optical system can ensure the structural rationality of the optical imaging lens.

[0057] In the exemplary embodiment, the total effective focal length f of the optical imaging lens and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 7.0 mm < f×f / TTL < 14.0 mm. For a telephoto lens, the size of the focal length and the size of the telephoto ratio are two important indicators. By reasonably controlling the conditional expression 7.0 mm < f×f / TTL < 14.0 mm, the optical imaging lens can satisfy f > 7.0 mm while satisfying the large telephoto ratio TTL / f < 1.0, thus having both the characteristics of a long focal length and a large telephoto ratio at the same time. More specifically, f and TTL may further satisfy: 7.5 mm < f×f / TTL < 8.5 mm.

[0058] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens may satisfy: TTL / f < 1.0. Satisfying TTL / f < 1.0 is beneficial for the optical imaging lens to have the characteristic of a large telephoto ratio. More specifically, TTL and f may further satisfy: 0.9 < TTL / f < 1.0.

[0059] In an exemplary embodiment, the effective focal length f1 of the first lens, 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: 0.8 < f1 / (R1 + R2) < 1.4. Satisfying 0.8 < f1 / (R1 + R2) < 1.4 is beneficial for reducing the tolerance sensitivity and reducing aberration.

[0060] In an exemplary embodiment, the effective focal length f2 of the second lens and the curvature radius R3 of the object side surface of the second lens may satisfy: 1.6 < f2 / R3 < 2.2. Satisfying 1.6 < f2 / R3 < 2.2 is beneficial for reducing the tolerance sensitivity, thereby making the optical imaging lens have better mass production feasibility.

[0061] In an exemplary embodiment, the effective focal length f6 of the sixth lens and the effective focal length f3 of the third lens may satisfy: 1.8 < f6 / f3 < 2.2. Satisfying 1.8 < f6 / f3 < 2.2 is beneficial for reasonably configuring the optical powers of the third lens and the sixth lens, thereby reducing aberration.

[0062] In an exemplary embodiment, 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 may satisfy: 1.2 < (R5 + R6) / (R5 - R6) < 1.7. By controlling the object side surface and the image side surface of the third lens so that the curvature radii of the two satisfy 1.2 < (R5 + R6) / (R5 - R6) < 1.7, it is possible to effectively control the contributions of the object side surface and the image side surface of the third lens to the astigmatism of the lens, thereby reasonably and effectively controlling the image quality of the intermediate field of view and the aperture band.

[0063] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis, the distance T34 between the third lens and the fourth lens on the optical axis, and the distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 2.6 < TTL / (T34 + T45) < 3.6. Satisfying 2.6 < TTL / (T34 + T45) < 3.6 is beneficial for the structure of the optical imaging lens to achieve a reasonable spatial distribution, thereby facilitating assembly.

[0064] In an exemplary embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT31 of the object side surface of the third lens may satisfy: 1.2 < DT11 / DT31 < 1.5. Satisfying 1.2 < DT11 / DT31 < 1.5 is not only beneficial to achieving a larger imaging range, but also beneficial to making the spatial distribution of the optical imaging lens more reasonable.

[0065] In an exemplary embodiment, the maximum effective radius DT61 of the object side surface of the sixth lens, the maximum effective radius DT62 of the image side surface of the sixth lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens may satisfy: 1.5 < (DT61 + DT62) / ImgH < 1.8. Satisfying 1.5 < (DT61 + DT62) / ImgH < 1.8 is beneficial to matching the optical imaging lens with a high-pixel chip.

[0066] In an exemplary embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the central thickness CT3 of the third lens on the optical axis may satisfy: 4.0 < f123 / (CT1 + CT2 + CT3) < 4.8. Satisfying 4.0 < f123 / (CT1 + CT2 + CT3) < 4.8 is beneficial to reducing aberration.

[0067] In an exemplary embodiment, the combined focal length f56 of the fifth lens and the sixth lens and the combined focal length f23 of the second lens and the third lens may satisfy: 0.3 < f56 / f23 < 2.9. Satisfying 0.3 < f56 / f23 < 2.9 is beneficial to the reasonable spatial distribution of the optical power of each lens, thereby being beneficial to reducing the aberration of the optical imaging lens.

[0068] In an exemplary embodiment, the distance SAG21 on the optical axis from the intersection of the object side surface of the second lens and the optical axis to the vertex of the effective radius of the object side surface of the second lens and the distance SAG32 on the optical axis from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens may satisfy: 0.8 < SAG21 / SAG32 < 1.7. Satisfying 0.8 < SAG21 / SAG32 < 1.7 can limit the bending degree of the second lens and the third lens, which is beneficial to reducing the manufacturing and forming difficulty of the lens.

[0069] In an exemplary embodiment, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens on the optical axis, the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens on the optical axis, the distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens on the optical axis, and the distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens on the optical axis may satisfy: 0.6<(SAG51+SAG52) / (SAG61+SAG62)<1.0. Satisfying this conditional formula can limit the curvature of the fifth lens and the sixth lens, which is conducive to reducing the difficulty of manufacturing and molding the lenses.

[0070] In an exemplary embodiment, the optical imaging lens may further include an aperture. The aperture may be disposed at an appropriate position as required. For example, the aperture may be disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0071] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the six lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and the on-axis spacing between each lens, the volume of the optical imaging lens can be effectively reduced and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. The optical imaging lens configured as above can have characteristics such as long focal length, high pixel, and high imaging quality.

[0072] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical lens, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the sixth lens is an aspherical lens. The characteristic of the 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, that is, 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 and image side 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 and image side 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.

[0073] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0074] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0075] Example 1

[0076] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0077] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0078] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0079] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0080]

[0081]

[0082] Table 1

[0083] In this example, the total effective focal length f of the optical imaging lens is 7.59 mm, the total length TTL of the optical imaging lens (i.e., the distance along the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens) is 7.22 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.2°.

[0084] 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, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0085]

[0086] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is 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 cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S12 in Example 1.

[0087] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.5346E-03 -2.5415E-03 3.8172E-03 -5.0000E-03 3.8865E-03 -1.8943E-03 5.5881E-04 -9.3122E-05 6.7984E-06 S2 -1.0920E-01 9.1937E-02 -4.8474E-02 1.2957E-02 6.0291E-04 -1.9005E-03 7.3251E-04 -1.3397E-04 1.0117E-05 S3 -9.2884E-02 7.4161E-02 -2.9603E-02 7.5323E-03 -3.7382E-03 3.2383E-03 -1.7354E-03 5.1735E-04 -6.4116E-05 S4 3.7883E-02 -4.3195E-02 6.5093E-02 -5.3557E-02 2.7204E-02 -9.1194E-03 1.2941E-03 5.2957E-04 -2.0384E-04 S5 -6.6871E-02 4.2904E-02 5.7257E-03 -2.5734E-02 5.2706E-03 1.4710E-02 -1.3228E-02 4.6619E-03 -6.4381E-04 S6 -9.5899E-02 8.8336E-02 -8.7445E-02 1.5883E-01 -2.7126E-01 2.9473E-01 -1.8433E-01 6.0667E-02 -8.0285E-03 S7 -2.7894E-02 -6.0544E-02 1.8409E-01 -3.7766E-01 5.3014E-01 -5.1011E-01 3.4050E-01 -1.5739E-01 4.9441E-02 S8 -2.0714E-02 -4.0873E-02 9.9669E-02 -1.5457E-01 1.6498E-01 -1.1748E-01 5.5407E-02 -1.6743E-02 2.9607E-03 S9 -6.6315E-03 -3.7904E-02 7.7634E-02 -1.1062E-01 1.0846E-01 -7.4617E-02 3.6792E-02 -1.3136E-02 3.3939E-03 S10 -7.8089E-03 -5.7879E-02 9.0814E-02 -8.1382E-02 5.5599E-02 -3.3412E-02 1.6999E-02 -6.6335E-03 1.8711E-03 S11 -4.7159E-02 -1.1843E-02 3.7611E-02 8.1389E-03 -4.4787E-02 3.8274E-02 -1.7704E-02 5.2276E-03 -1.0406E-03 S12 -5.5256E-02 1.7943E-02 7.5144E-03 -1.0159E-02 3.9759E-03 -3.8004E-04 -2.8633E-04 1.4950E-04 -3.7816E-05

[0088] Table 2

[0089] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image 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 magnification 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. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0090] Example 2

[0091] The following reference Figures 3 to 4D An optical imaging lens according to Embodiment 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0092] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0093] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0094] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.1°.

[0095] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0096]

[0097] Table 3

[0098]

[0099]

[0100] Table 4

[0101] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 4CThe 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 magnification 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. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0102] Example 3

[0103] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0104] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, 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 positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0106] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.2°.

[0107] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 3, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0108]

[0109]

[0110] Table 5

[0111] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.9561E-03 1.1559E-04 -2.4577E-03 3.8324E-03 -3.6504E-03 2.0371E-03 -6.6837E-04 1.1870E-04 -8.8145E-06 S2 -1.2102E-01 1.2899E-01 -1.0464E-01 6.2208E-02 -2.5652E-02 6.8624E-03 -1.0819E-03 8.3282E-05 -1.7877E-06 S3 -1.0833E-01 1.1383E-01 -7.9476E-02 3.5936E-02 -4.4836E-03 -4.5269E-03 2.7404E-03 -6.3609E-04 5.9500E-05 S4 3.3015E-02 -3.8146E-02 6.7475E-02 -7.6893E-02 6.2476E-02 -3.4141E-02 1.1747E-02 -2.3064E-03 2.2386E-04 S5 -5.3078E-02 3.0407E-02 1.3580E-02 -4.8471E-02 5.3405E-02 -3.4942E-02 1.3941E-02 -3.0586E-03 2.8085E-04 S6 -7.5155E-02 6.7687E-02 -4.8103E-02 5.6903E-02 -8.6284E-02 9.7502E-02 -6.6059E-02 2.4349E-02 -3.7529E-03 S7 -5.1993E-02 -1.7670E-02 9.4030E-02 -2.0036E-01 2.9517E-01 -3.0356E-01 2.1952E-01 -1.1025E-01 3.7430E-02 S8 -5.6347E-02 -1.2686E-02 7.0595E-02 -1.2788E-01 1.5984E-01 -1.3856E-01 8.3999E-02 -3.5234E-02 9.9947E-03 S9 -1.4119E-02 -3.6454E-02 5.1242E-02 -6.6451E-02 5.7974E-02 -2.9005E-02 3.0726E-03 6.7119E-03 -5.4531E-03 S10 1.0089E-02 -5.4771E-02 7.4959E-02 -9.2277E-02 8.6215E-02 -5.9437E-02 3.0458E-02 -1.1631E-02 3.2837E-03 S11 1.7134E-02 -1.4217E-01 2.3329E-01 -2.4610E-01 1.8406E-01 -9.9321E-02 3.9262E-02 -1.1484E-02 2.4837E-03 S12 -1.2146E-02 -1.0316E-01 1.6605E-01 -1.6109E-01 1.0953E-01 -5.3921E-02 1.9544E-02 -5.2560E-03 1.0465E-03

[0112] Table 6

[0113] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The magnification 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. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0114] Example 4

[0115] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0116] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0117] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0118] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.2°.

[0119] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0120]

[0121]

[0122] Table 7

[0123] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.7567E-03 -1.6645E-04 -1.7628E-03 2.8530E-03 -2.8032E-03 1.5919E-03 -5.2762E-04 9.3992E-05 -6.9619E-06 S2 -1.1958E-01 1.2830E-01 -1.0808E-01 6.9225E-02 -3.1837E-02 9.9118E-03 -1.9560E-03 2.1991E-04 -1.0799E-05 S3 -1.0637E-01 1.1209E-01 -8.2516E-02 4.1382E-02 -7.3150E-03 -4.6974E-03 3.4530E-03 -8.9713E-04 9.0793E-05 S4 3.3712E-02 -4.0212E-02 6.6808E-02 -7.3511E-02 6.0166E-02 -3.4294E-02 1.2463E-02 -2.5656E-03 2.4934E-04 S5 -5.4994E-02 3.3068E-02 1.0034E-02 -4.3767E-02 4.9576E-02 -3.3681E-02 1.4119E-02 -3.2787E-03 3.1992E-04 S6 -7.7658E-02 7.3518E-02 -6.0121E-02 7.8624E-02 -1.1516E-01 1.2224E-01 -7.8957E-02 2.8071E-02 -4.2167E-03 S7 -5.5964E-02 1.0247E-02 -6.8596E-03 3.8778E-02 -7.3379E-02 8.0173E-02 -5.5156E-02 2.4882E-02 -7.4174E-03 S8 -6.2535E-02 1.0779E-02 1.6143E-03 5.5687E-03 -6.0680E-03 -1.4345E-03 7.8333E-03 -7.0891E-03 3.3155E-03 S9 -2.2914E-02 -2.4414E-02 3.3184E-02 -4.9533E-02 5.0572E-02 -3.2534E-02 1.2650E-02 -2.3421E-03 -2.4082E-04 S10 -5.1360E-03 -2.4908E-02 2.8695E-02 -3.7178E-02 3.5223E-02 -2.2747E-02 1.0188E-02 -3.1434E-03 6.1735E-04 S11 -1.2556E-02 -4.4765E-02 8.3521E-02 -8.9257E-02 6.1748E-02 -2.8158E-02 8.6622E-03 -1.8288E-03 2.6750E-04 S12 -3.1614E-02 -3.4749E-02 6.7328E-02 -6.9005E-02 4.7522E-02 -2.3258E-02 8.3995E-03 -2.2848E-03 4.6888E-04

[0124] Table 8

[0125] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image 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. Fig.8D The magnification 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. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0126] Example 5

[0127] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0128] like Fig. 9 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0129] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0130] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.0°.

[0131] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 5, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0132]

[0133] Table 9

[0134] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.6722E-03 -4.0113E-05 -1.5653E-03 2.6200E-03 -2.7276E-03 1.6230E-03 -5.5956E-04 1.0308E-04 -7.8545E-06 S2 -1.1896E-01 1.3352E-01 -1.2911E-01 9.6400E-02 -5.1064E-02 1.8159E-02 -4.0930E-03 5.2764E-04 -2.9709E-05 S3 -1.0497E-01 1.2281E-01 -1.0646E-01 6.1288E-02 -1.2958E-02 -7.0541E-03 5.7125E-03 -1.5181E-03 1.4766E-04 S4 2.4277E-02 3.1409E-03 -3.6897E-03 -7.4977E-04 6.0778E-03 -2.0697E-03 -3.1977E-03 2.6791E-03 -5.7728E-04 S5 -8.2421E-02 1.0264E-01 -1.0808E-01 9.5967E-02 -6.2945E-02 2.5511E-02 -4.7748E-03 -6.9089E-05 1.0093E-04 S6 -9.9280E-02 1.1514E-01 -1.1475E-01 9.9456E-02 -4.8543E-02 -1.1763E-02 3.5531E-02 -2.0761E-02 4.2460E-03 S7 -3.9916E-02 -1.3354E-04 5.4584E-03 4.7899E-03 -2.3336E-02 3.6076E-02 -3.1787E-02 1.7941E-02 -6.6306E-03 S8 -3.8941E-02 1.9031E-03 1.4457E-03 1.3077E-02 -3.1222E-02 3.8757E-02 -2.9915E-02 1.5228E-02 -5.1333E-03 S9 -2.2143E-02 -1.6655E-02 -6.3145E-03 6.0889E-02 -1.2273E-01 1.4129E-01 -1.0634E-01 5.5074E-02 -2.0018E-02 S10 4.9332E-03 -4.8939E-02 3.1576E-02 1.8777E-02 -6.0340E-02 6.1525E-02 -3.7051E-02 1.4773E-02 -4.0537E-03 S11 3.0516E-02 -1.4380E-01 2.0186E-01 -1.5046E-01 6.0931E-02 -6.8831E-03 -6.2639E-03 3.9857E-03 -1.2121E-03 S12 -7.9726E-03 -9.6254E-02 1.5709E-01 -1.4369E-01 9.0172E-02 -4.1379E-02 1.4238E-02 -3.7005E-03 7.2248E-04

[0135] Table 10

[0136] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 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. Fig. 10D The magnification 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. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0137] Example 6

[0138] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0139] like Fig.11 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0140] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0141] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.1°.

[0142] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 6, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0143]

[0144] Table 11

[0145] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.5140E-03 1.8158E-04 -3.4337E-03 5.4557E-03 -5.4077E-03 3.2039E-03 -1.1298E-03 2.1852E-04 -1.7825E-05 S2 -1.0502E-01 5.3220E-02 2.2955E-02 -6.1243E-02 5.1457E-02 -2.4808E-02 7.2057E-03 -1.1686E-03 8.0840E-05 S3 -9.1454E-02 4.6460E-02 3.1379E-02 -5.9085E-02 4.2708E-02 -1.6911E-02 3.5755E-03 -2.8876E-04 -4.8894E-06 S4 3.3995E-02 -2.1217E-02 2.6722E-02 -1.4211E-02 -3.2108E-03 1.0752E-02 -7.2694E-03 2.2991E-03 -2.7063E-04 S5 -5.0731E-02 4.3052E-02 -2.3321E-02 4.1758E-03 4.4477E-03 -4.9261E-03 2.6714E-03 -7.5652E-04 8.6629E-05 S6 -7.4244E-02 7.1525E-02 -5.6930E-02 5.5534E-02 -5.7436E-02 5.0465E-02 -2.9165E-02 9.5600E-03 -1.3422E-03 S7 -4.5595E-02 1.9829E-03 9.0988E-03 -1.0633E-02 9.2470E-03 -4.0885E-03 6.5935E-04 5.8626E-04 -6.0792E-04 S8 -4.6511E-02 5.6087E-03 1.3282E-03 6.2612E-03 -1.5408E-02 2.1083E-02 -1.7783E-02 9.9842E-03 -3.7400E-03 S9 -3.0827E-02 3.6511E-04 -5.8751E-02 1.7900E-01 -3.1485E-01 3.5943E-01 -2.7979E-01 1.5254E-01 -5.8855E-02 S10 -1.6227E-02 -1.8907E-02 -6.9432E-03 6.0790E-02 -1.0634E-01 1.0398E-01 -6.5198E-02 2.7596E-02 -8.0486E-03 S11 -3.2008E-02 -6.3564E-02 1.3882E-01 -1.2801E-01 6.2160E-02 -8.5133E-03 -8.3604E-03 6.0964E-03 -2.0830E-03 S12 -4.9732E-02 -4.4841E-02 1.1766E-01 -1.2915E-01 9.2035E-02 -4.6222E-02 1.6903E-02 -4.5747E-03 9.1938E-04

[0146] Table 12

[0147] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 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. Fig.12D The magnification 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. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0148] Example 7

[0149] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0150] like Fig.13 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0151] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0152] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.1°.

[0153] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspheric mirror surfaces S1-S12 that can be used in Example 7, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0154]

[0155]

[0156] Table 13

[0157] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.7956E-03 -6.2487E-04 -2.0027E-03 2.8208E-03 -2.8720E-03 1.7557E-03 -6.3618E-04 1.2733E-04 -1.0903E-05 S2 -1.2457E-01 1.1753E-01 -8.1420E-02 4.1884E-02 -1.4093E-02 2.2415E-03 1.9544E-04 -1.3427E-04 1.4718E-05 S3 -1.1027E-01 1.1087E-01 -6.2969E-02 1.7930E-02 1.0957E-02 -1.4919E-02 7.4650E-03 -1.8524E-03 1.9221E-04 S4 3.2784E-02 -1.6434E-02 2.2062E-02 -2.5128E-02 2.8291E-02 -2.3746E-02 1.2963E-02 -3.9846E-03 5.4642E-04 S5 -4.4699E-02 4.2424E-02 -3.9499E-02 4.0038E-02 -3.6757E-02 2.4040E-02 -9.7780E-03 2.2416E-03 -2.2211E-04 S6 -6.7816E-02 6.7344E-02 -6.0384E-02 6.8604E-02 -6.8922E-02 5.0904E-02 -2.3541E-02 6.0430E-03 -6.5341E-04 S7 -4.7284E-02 -1.8146E-03 2.4980E-02 -4.2673E-02 5.9165E-02 -6.0037E-02 4.5535E-02 -2.4712E-02 9.0550E-03 S8 -4.7355E-02 1.1569E-04 2.0312E-02 -2.8871E-02 3.3621E-02 -2.7850E-02 1.6970E-02 -7.3340E-03 2.1465E-03 S9 -2.5383E-02 -1.5797E-02 -1.1121E-02 7.5752E-02 -1.6731E-01 2.2017E-01 -1.9150E-01 1.1493E-01 -4.8387E-02 S10 -6.6398E-03 -3.0573E-02 1.9086E-02 1.1095E-02 -4.5402E-02 5.6265E-02 -4.0803E-02 1.9426E-02 -6.3165E-03 S11 -2.6668E-02 -6.5105E-02 1.3006E-01 -1.2648E-01 7.4523E-02 -2.4524E-02 1.9112E-03 2.0081E-03 -1.0037E-03 S12 -5.0446E-02 -4.1888E-02 1.0284E-01 -1.1091E-01 7.8897E-02 -3.9791E-02 1.4649E-02 -3.9978E-03 8.1123E-04

[0158] Table 14

[0159] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 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. Fig.14D The magnification 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. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0160] Example 8

[0161] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0162] like Fig.15 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0163] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0164] In this example, the total effective focal length f of the optical imaging lens is 7.49 mm, the total length TTL of the optical imaging lens is 7.25 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20 mm, and the maximum field of view FOV of the optical imaging lens is 45.1°.

[0165] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness and focal length are all in millimeters (mm). Table 16 shows the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 of the aspherical mirror surfaces S1-S12 that can be used in Example 8, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0166]

[0167] Table 15

[0168] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.5989E-03 -1.1886E-03 1.4707E-03 -1.9192E-03 1.4514E-03 -7.1902E-04 2.2333E-04 -4.0496E-05 3.2078E-06 S2 -1.2085E-01 1.4133E-01 -1.3690E-01 1.0461E-01 -5.8424E-02 2.2304E-02 -5.4573E-03 7.6910E-04 -4.7390E-05 S3 -1.0660E-01 1.2354E-01 -1.1274E-01 7.5707E-02 -2.8577E-02 1.6580E-03 3.1811E-03 -1.2057E-03 1.4561E-04 S4 4.7546E-02 -7.4926E-02 1.1722E-01 -1.4785E-01 1.5812E-01 -1.2289E-01 6.0838E-02 -1.6909E-02 2.0259E-03 S5 -5.0396E-02 4.7671E-03 4.7269E-02 -6.3784E-02 5.3000E-02 -3.4963E-02 1.6994E-02 -4.9656E-03 6.2920E-04 S6 -8.6279E-02 7.4127E-02 -6.8131E-02 1.3732E-01 -2.3407E-01 2.4982E-01 -1.5798E-01 5.4771E-02 -8.0572E-03 S7 -5.2140E-02 1.6919E-02 -4.7636E-02 1.6159E-01 -2.8010E-01 3.0862E-01 -2.2512E-01 1.1008E-01 -3.5782E-02 S8 -5.2338E-02 3.8814E-03 1.1187E-02 -8.3727E-03 2.6424E-02 -5.2460E-02 5.8603E-02 -3.9687E-02 1.6787E-02 S9 -1.4185E-02 -4.4196E-02 7.3979E-02 -1.2671E-01 1.6334E-01 -1.5125E-01 1.0219E-01 -5.0940E-02 1.8752E-02 S10 4.9741E-03 -4.0691E-02 4.8168E-02 -5.8072E-02 5.1356E-02 -2.9227E-02 9.1853E-03 -1.9608E-04 -1.2293E-03 S11 -1.3896E-02 -4.5420E-02 7.2304E-02 -6.9377E-02 4.4179E-02 -1.8023E-02 4.3752E-03 -4.3355E-04 -8.0298E-05 S12 -3.8091E-02 -2.8454E-02 5.0773E-02 -4.5455E-02 2.7150E-02 -1.1313E-02 3.3960E-03 -7.5878E-04 1.2991E-04

[0169] Table 16

[0170] Fig.16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0171] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0172] Conditional / Example 1 2 3 4 5 6 7 8 f×f / TTL(mm) 7.98 7.75 7.75 7.75 7.75 7.75 7.75 7.75 TTL / f 0.95 0.97 0.97 0.97 0.97 0.97 0.97 0.97 f1 / (R1+R2) 0.90 0.97 1.01 0.99 0.92 1.17 1.27 0.91 f2 / R3 2.01 1.96 2.06 2.06 2.06 1.75 1.75 2.10 f6 / f3 2.12 2.05 1.99 2.08 1.96 1.90 1.85 2.13 (R5+R6) / (R5-R6) 1.48 1.45 1.57 1.57 1.37 1.26 1.23 1.65 TTL / (T34+T45) 2.85 3.03 3.21 3.33 2.87 2.91 3.04 3.48 DT11 / DT31 1.33 1.31 1.30 1.30 1.31 1.28 1.28 1.32 (DT61+DT62) / ImgH 1.75 1.63 1.65 1.64 1.67 1.62 1.61 1.64 f123 / (CT1+CT2+CT3) 4.30 4.44 4.38 4.40 4.62 4.70 4.66 4.10 f56 / f23 0.89 1.54 2.65 2.79 1.17 0.56 0.39 2.73 SAG21 / SAG32 1.21 1.12 1.17 1.09 1.21 1.40 1.57 0.96 (SAG51+SAG52) / (SAG61+SAG62) 0.84 0.86 0.73 0.65 0.90 0.81 0.81 0.72

[0173] Table 17

[0174] The present application also provides a camera device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent camera device such as a digital camera, or a camera module integrated in a mobile electronic device such as a mobile phone. The camera device is equipped with the optical imaging lens described above.

[0175] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a 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 above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, and its object side surface is convex and its image side surface is concave; a second lens having positive refractive power and a convex object-side surface; The third lens has a negative optical power, and its object side surface is convex and its image side surface is concave; a fourth lens having positive or negative power; a fifth lens element having positive refractive power, the image-side surface of which is convex; and The sixth lens has a negative optical power and its object side surface is concave. The total effective focal length f of the optical imaging lens and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 7.75 mm ≤ f × ​​f / TTL ≤ 7.98 mm; The combined focal length f123 of the first lens, the second lens and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 4.10≤f123 / (CT1+CT2+CT3)≤4.70; The number of lenses having optical power in the optical imaging lens is six.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, 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 satisfy: 0.90≤f1 / (R1+R2)≤1.

27.

3. The optical imaging lens according to claim 1, wherein: An effective focal length f2 of the second lens and a curvature radius R3 of the object-side surface of the second lens satisfy: 1.75≤f2 / R3≤2.

10.

4. The optical imaging lens according to claim 1, wherein: The effective focal length f6 of the sixth lens and the effective focal length f3 of the third lens satisfy: 1.8 <f6 / f3≤2.13。 5. The optical imaging lens according to claim 1, wherein: 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 satisfy: 1.2<(R5+R6) / (R5-R6)<1.

7.

6. The optical imaging lens according to claim 1, wherein: A distance TTL from the object side surface of the first lens to the imaging surface on the optical axis, a spacing distance T34 between the third lens and the fourth lens on the optical axis, and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy: 2.85≤TTL / (T34+T45)≤3.

48.

7. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT31 of the object-side surface of the third lens satisfy: 1.28≤DT11 / DT31≤1.

33.

8. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT61 of the object side surface of the sixth lens, the maximum effective radius DT62 of the image side surface of the sixth lens, and half the diagonal length of the effective pixel area on the imaging plane ImgH satisfy: 1.61≤(DT61+DT62) / ImgH<1.

8.

9. The optical imaging lens according to claim 1, wherein: A combined focal length f56 of the fifth lens and the sixth lens and a combined focal length f23 of the second lens and the third lens satisfy: 0.39≤f56 / f23≤2.

79.

10. The optical imaging lens according to claim 1, wherein: 0.96≤SAG21 / SAG32≤1.57, Among them, SAG21 is the distance from the intersection of the object side surface of the second lens and the optical axis to the vertex of the effective radius of the object side surface of the second lens on the optical axis, and SAG32 is the distance from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis.

11. The optical imaging lens according to claim 1, wherein: 0.6<(SAG51+SAG52) / (SAG61+SAG62)≤0.90, Among them, SAG51 is the distance from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens on the optical axis, SAG52 is the distance from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens on the optical axis, SAG61 is the distance from the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens on the optical axis, and SAG62 is the distance from the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens on the optical axis.

12. The optical imaging lens according to any one of claims 1 to 11, characterized in that: The distance TTL from the object side of the first lens to the imaging surface on the optical axis and the total effective focal length f satisfy: 0.9 <TTL / f<1.0。

Images