Optical imaging lens, camera module and terminal equipment

Abstract

The embodiment of the invention relates to the technical field of optical imaging, and provides an optical imaging lens, a camera module and terminal equipment, and the optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth light transmitting lens and a sixth lens. The maximum entrance pupil diameter of the optical imaging lens is EPDmax, the minimum entrance pupil diameter of the optical imaging lens is EPDmin, and (EPDmax-EPDmin) / EPDmaxgt is satisfied; according to the optical imaging lens, the variable diaphragm variation range is larger than 0.35, the imaging effect of the optical imaging lens during bright and dark environment switching is facilitated, the number of the lenses of the optical imaging lens is six, the cost is lower, the size is smaller, and imaging pictures with higher quality can be obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical imaging technology, and in particular to an optical imaging lens, a camera module and a terminal device. BACKGROUND

[0002] In recent years, with the rapid development of intelligent mobile terminals (mobile phones, tablet computers, etc.), consumers' needs for shooting experience and photo quality are also increasingly high, and handheld mobile terminals with high imaging quality are increasingly favored by people.

[0003] However, in some flagship models, the variable aperture camera module usually adopts an optical imaging lens with 7 or 8 lenses, which has high cost and large size. Therefore, in the case of relatively few lenses, it is worth considering how to obtain high-quality photos. SUMMARY

[0004] The embodiments of the present application provide an optical imaging lens, a camera module and a terminal device, which can improve the technical problem that the optical imaging lens in the related art cannot have low cost, small size and high imaging quality at the same time.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, the present application provides an optical imaging lens, which comprises, in order from the object side to the image side:

[0007] a first lens with positive refractive power, the object side surface of the first lens being a convex surface, and the image side surface of the first lens being a concave surface;

[0008] a second lens with negative refractive power, the object side surface of the second lens being a convex surface, and the image side surface of the second lens being a concave surface;

[0009] a third lens with positive refractive power,

[0010] a fourth lens with negative refractive power, the image side surface of the fourth lens being a concave surface;

[0011] a fifth lens with positive refractive power, the object side surface of the fifth lens being a convex surface, and the image side surface of the fifth lens being a convex surface;

[0012] a sixth lens with negative refractive power, the object side surface of the sixth lens being a convex surface, and the image side surface of the sixth lens being a concave surface;

[0013] The maximum entrance pupil diameter of the optical imaging lens is EPDmax, and the minimum entrance pupil diameter of the optical imaging lens is EPDmin, and (EPDmax-EPDmin) / EPDmax>0.35 is satisfied.

[0014] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages.

[0015] The optical imaging lens provided by the embodiments of the present application has a maximum entrance pupil diameter EPDmax and a minimum entrance pupil diameter EPDmin, and satisfies (EPDmax-EPDmin) / EPDmax>0.35, so that the optical imaging lens has a large variable aperture range, which is beneficial to the imaging effect of the optical imaging lens when switching between bright and dark environments. In addition, the optical imaging lens has six lenses, has a lower cost and a smaller size, and can obtain a higher-quality imaging picture.

[0016] In some embodiments, the distance Dtstop between the maximum aperture position and the minimum aperture position of the optical imaging lens in the optical axis direction, and the maximum distance sag11 between the intersection of the object side surface of the first lens and the optical axis and any point on the object side surface of the first lens in the optical axis direction satisfy 0≤Dstop / sag11<0.9.

[0017] It can be understood that 0≤Dstop / sag11<0.9 can reasonably arrange the variable aperture position on the object side of the first lens, which is beneficial to the installation of the variable aperture assembly.

[0018] In some embodiments, the effective focal length of the second lens is f2, and the total effective focal length of the optical imaging lens is f.

[0019] -0.5<f / f2<-0.2.

[0020] It can be understood that -0.5<f / f2<-0.2 can effectively control the ratio of the effective focal length of the second lens to the total effective focal length of the imaging lens, balance the aberration introduced by the first lens, and improve the imaging quality.

[0021] In some embodiments, the effective focal length of the third lens is f3, and the total effective focal length of the optical imaging lens is f.

[0022] 2.5<f3 / f<10.

[0023] It can be understood that 2.5<f3 / f<10 can effectively control the ratio of the effective focal length of the third lens to the total effective focal length of the imaging lens, smoothly transition the light to the subsequent lens, reduce the system aberration, and improve the imaging quality.

[0024] In some embodiments, the distance TTL between the object side surface of the first lens of the optical imaging lens and the imaging surface in the optical axis direction, the curvature radius R11 of the object side surface of the first lens, and the curvature radius R62 of the image side surface of the sixth lens satisfy 0.5

[0025] 10 < TTL / (R62 / R11) < 11.5.

[0026] It can be understood that 10 < TTL / (R62 / R11) < 11.5 can effectively balance the shapes of the entrance surface and the exit surface of the lens, is conducive to obtaining a smaller TTL, and reduces the lens aberration and improves the imaging quality.

[0027] In some embodiments, the maximum half field of view of the optical imaging lens is HFOV;

[0028] EPDmax*tan(HFOV) > 2.9.

[0029] It can be understood that EPDmax*tan(HFOV) > 2.9 can make the optical imaging lens have a larger light aperture, which is conducive to improving the imaging effect of the optical imaging lens in a dark environment.

[0030] In some embodiments, the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens in the optical axis direction is TTL; and half of the diagonal length of the effective pixel area on the imaging surface of the photographic lens is ImgH;

[0031] TTL / ImgH < 1.4.

[0032] It can be understood that TTL / ImgH < 1.4 can effectively reduce the TTL of the lens, thereby realizing the miniaturization of the module.

[0033] In some embodiments, the effective focal length of the first lens is f1, the effective focal length of the sixth lens is f6, the radius of curvature of the object side surface of the first lens is R11, and the radius of curvature of the image side surface of the sixth lens is R62;

[0034] 4.5 < f1 / R11-f6 / R62 < 5.

[0035] It can be understood that 4.5 < f1 / R11-f6 / R62 < 5 can effectively constrain the effective focal lengths and the lens shapes of the first lens and the sixth lens, reasonably distribute the optical powers of the two lenses, balance the system aberration, and thereby improve the system imaging quality.

[0036] In some embodiments, the effective focal length of the first lens is f1, the effective focal length of the fourth lens is f4, and the effective focal length of the fifth lens is f5;

[0037] -1 < F1 / (F4+F5) < 0.

[0038] It can be understood that -1 < F1 / (F4+F5) < 0 can reasonably distribute the optical powers of the first lens, the fourth lens, and the fifth lens, balance the system aberration, and thereby improve the system imaging quality.

[0039] In some embodiments, the central thickness of the second lens on the optical axis is CT2, the central thickness of the third lens on the optical axis is CT3, and the distance between the image side surface of the second lens and the object side surface of the third lens on the optical axis is DT23;

[0040] 1.5 < (CT2 + CT3) / DT23 < 2.5.

[0041] It can be understood that, by satisfying 1.5 < (CT2 + CT3) / DT23 < 2.5, the structure distribution of the second lens and the third lens can be more reasonable, which is beneficial to the assembly of the imaging lens.

[0042] In some embodiments, the central thickness of the fourth lens on the optical axis is CT4, the central thickness of the fifth lens on the optical axis is CT5, and the central thickness of the sixth lens on the optical axis is CT6;

[0043] 1.3 < (CT4) / (CT5 - CT6) < 2.

[0044] It can be understood that, by satisfying 1.3 < (CT4) / (CT5 - CT6) < 2, the structure of the fourth lens, the fifth lens and the sixth lens can be more uniform and reasonable, which is beneficial to the processing and molding of the lenses.

[0045] In some embodiments, the maximum distance between the intersection of the object side surface of the fifth lens and the optical axis and any point on the object side surface of the fifth lens in the direction of the optical axis is Sag51, the maximum distance between the intersection of the image side surface of the sixth lens and the optical axis and any point on the image side surface of the sixth lens in the direction of the optical axis is Sag62, the central thickness of the fifth lens on the optical axis is CT5, and the central thickness of the sixth lens on the optical axis is CT6;

[0046] 1 < |Sag51 / CT5| + |Sag62 / CT6| < 2.

[0047] It can be understood that, by satisfying 1 < |Sag51 / CT5| + |Sag62 / CT6| < 2, the surface shape of the fifth lens and the sixth lens can be smoother, which is beneficial to the processing and molding of the lenses. At the same time, the field curvature of the imaging lens can be effectively balanced.

[0048] In some embodiments, the maximum distance between the object side surface of the first lens and the image side surface of the sixth lens on the optical axis is Td, and the sum of the thicknesses of all the lenses of the optical imaging lens on the optical axis is ∑CT;

[0049] 1.5 < Td / ∑CT < 1.8.

[0050] It can be understood that, by satisfying 1.5 < Td / ∑CT < 1.8, the spatial arrangement of the lens group of the imaging lens can be facilitated, and the volume and total length of the imaging lens can be reduced to meet the miniaturization requirement.

[0051] In some embodiments, the object side surface of the third lens is convex, and the image side surface of the third lens is convex; or,

[0052] the object side surface of the third lens is convex, and the image side surface of the third lens is concave; and / or,

[0053] the object side surface of the fourth lens is convex; or,

[0054] the object side surface of the fourth lens is concave.

[0055] In a second aspect, the present application provides a camera module, comprising the optical imaging lens and a variable aperture, the variable aperture being used to adjust the amount of light passing into the optical imaging lens.

[0056] In a third aspect, the present application provides a terminal device comprising the camera module.

[0057] It can be understood that the beneficial effects of the second aspect and the third aspect described above can be referred to the related description in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 a structural schematic diagram of a terminal device provided by an embodiment of the present application;

[0059] Figure 2 an imaging principle schematic diagram provided by an embodiment of the present application;

[0060] Figure 3 a structural schematic diagram of an optical imaging lens provided by an embodiment of the present application;

[0061] Figure 4 an optical data table of the optical imaging lens provided by the first embodiment of the present application;

[0062] Figure 5 an aspherical surface data table of each lens of the optical imaging lens provided by the first embodiment of the present application;

[0063] Figure 6 a lateral chromatic aberration field curve on the image plane of the optical imaging lens provided by the first embodiment of the present application in a large aperture state;

[0064] Figure 7 a distortion aberration on the image plane of the optical imaging lens provided by the first embodiment of the present application in a large aperture state;

[0065] Figure 8 a lateral chromatic aberration field curve on the image plane of the optical imaging lens provided by the first embodiment of the present application in a small aperture state;

[0066] Figure 9The distortion aberration on the image plane of the optical imaging lens provided in Embodiment One of the present application in a small aperture state;

[0067] Figure 10 The optical data table of the optical imaging lens provided in Embodiment Two of the present application;

[0068] Figure 11 The aspheric surface data table of each lens of the optical imaging lens provided in Embodiment Two of the present application;

[0069] Figure 12 The astigmatic field curve on the image plane of the optical imaging lens provided in Embodiment Two of the present application in a large aperture state;

[0070] Figure 13 The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Two of the present application in a large aperture state;

[0071] Figure 14 The astigmatic field curve on the image plane of the optical imaging lens provided in Embodiment Two of the present application in a small aperture state;

[0072] Figure 15 The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Two of the present application in a small aperture state;

[0073] Figure 16 The optical data table of the optical imaging lens provided in Embodiment Three of the present application;

[0074] Figure 17 The aspheric surface data table of each lens of the optical imaging lens provided in Embodiment Three of the present application;

[0075] Figure 18 The astigmatic field curve on the image plane of the optical imaging lens provided in Embodiment Three of the present application in a large aperture state;

[0076] Figure 19 The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Three of the present application in a large aperture state;

[0077] Figure 20 The astigmatic field curve on the image plane of the optical imaging lens provided in Embodiment Three of the present application in a small aperture state;

[0078] Figure 21 The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Three of the present application in a small aperture state;

[0079] Figure 22 The optical data table of the optical imaging lens provided in Embodiment Four of the present application;

[0080] Figure 23Aspheric surface data table of each lens of the optical imaging lens provided in Embodiment Four of the present application;

[0081] Figure 24 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Four of the present application in the large aperture state;

[0082] Figure 25 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Four of the present application in the large aperture state;

[0083] Figure 26 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Four of the present application in the small aperture state;

[0084] Figure 27 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Four of the present application in the small aperture state;

[0085] Figure 28 Optical data table of the optical imaging lens provided in Embodiment Five of the present application;

[0086] Figure 29 Aspheric surface data table of each lens of the optical imaging lens provided in Embodiment Five of the present application;

[0087] Figure 30 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Five of the present application in the large aperture state;

[0088] Figure 31 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Five of the present application in the large aperture state;

[0089] Figure 32 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Five of the present application in the small aperture state;

[0090] Figure 33 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Five of the present application in the small aperture state;

[0091] Figure 34 Optical data table of the optical imaging lens provided in Embodiment Six of the present application;

[0092] Figure 35 Aspheric surface data table of each lens of the optical imaging lens provided in Embodiment Six of the present application;

[0093] Figure 36 Distortion aberration on the image plane of the optical imaging lens provided in Embodiment Six of the present application in the large aperture state;

[0094] Figure 37The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Six of the present application in a large aperture state;

[0095] Figure 38 The astigmatism field curve on the image plane of the optical imaging lens provided in Embodiment Six of the present application in a small aperture state;

[0096] Figure 39 The distortion aberration on the image plane of the optical imaging lens provided in Embodiment Six of the present application in a small aperture state.

[0097] In the drawings, various reference numbers refer to:

[0098] 1000, terminal device;

[0099] 200, camera module; 300, housing; 400, display screen;

[0100] 100, optical imaging lens; 101, image sensor; 102, analog-to-digital converter; 103, image processor; 104, memory;

[0101] 10, first lens; 20, second lens; 30, third lens; 40, fourth lens; 50, fifth lens; 60, sixth lens.

[0102] A, object side; B, image side; 30, variable diaphragm; 40, image plane;

[0103] I, optical axis;

[0104] E11, object side surface of the first lens; E21, object side surface of the second lens; E31, object side surface of the third lens; E41, object side surface of the fourth lens; E51, object side surface of the fifth lens; E61, object side surface of the sixth lens;

[0105] E12, image side surface of the first lens; E22, image side surface of the second lens; E32, image side surface of the third lens; E42, image side surface of the fourth lens; E52, image side surface of the fifth lens; E62, image side surface of the sixth lens. DETAILED DESCRIPTION

[0106] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numbers throughout the drawings represent the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0107] Unless otherwise defined, all 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; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The description and drawings of this application are not meant to limit the application to the embodiments described. The terms "comprise", "comprising", "including", "including", "have" and "having" and any variations thereof in the specification and in the claims are intended to cover both the case where one or more steps, features, articles, components, elements or the like are included in the content of the feature, and the case where one or more steps, features, articles, components, elements or the like are not included in the content of the feature.

[0108] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0109] The terms "first", "second", "third", "fourth", "fifth", "sixth" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. For example, the first deformation space and the second deformation space are only used to distinguish different deformation spaces and do not limit the order, the first deformation space can be named as the second deformation space, and the second deformation space can be named as the first deformation space without departing from the scope of various described embodiments. And the terms "first", "second", etc. do not limit the features indicated to be different.

[0110] In the present application, unless otherwise specified and limited, the terms "connected", "connected" and the like should be interpreted broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0111] In the present application, "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships; for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally means that the front and rear associated objects have an "or" relationship.

[0112] It should be noted that the terms "in some embodiments", "exemplary", "for example", and the like are used herein to mean one or more embodiments of the application. Any embodiment or design solution described herein as "in some embodiments", "exemplary", "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of such terms is merely intended to present certain concepts in a specific way.

[0113] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments.

[0114] In one specific application scenario of the optical imaging lens, for example, when the lens is used for shooting in a sunny day or a night with direct street light, a bright line or a bright arc with clear boundary will appear in the picture at a specific angle of view, which is called "lens ghost image", which greatly affects the shooting experience and quality of the user.

[0115] In addition, the main reason for the "lens ghost image" is the secondary reflection or the fourth reflection in the first lens of the optical imaging lens, and thus the brightness of the bright line or the bright arc in the picture depends on the number of total reflections in the first lens of the optical imaging lens.

[0116] Therefore, the present application provides an optical imaging lens, which includes a first lens group comprising a first lens, an intermediate medium and a second lens arranged in sequence from an object side to an image side, the refractive index of the first lens is n1, the refractive index of the second lens is n2, and the refractive index of the intermediate medium is n3, and the refractive indices of the lenses and the intermediate medium satisfy the following relationship: |n1-n3| / n2<0.15. In this way, the chromatic aberration of the optical imaging lens can be balanced, the overall imaging quality of the optical imaging lens can be improved, and the probability of total reflection can be effectively reduced, thereby reducing the probability of "lens ghost image" formed by total reflection.

[0117] The terminal device 1000 involved in the embodiments of the present application can include a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem. It can also include a cellular phone, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a machine type communication (MTC) terminal, a point of sales (POS), a vehicle-mounted computer, and other terminal devices 1000 with imaging functions.

[0118] For the convenience of understanding, the technical terms involved in the present application are explained and described below.

[0119] Optical axis, the direction of light transmission of an optical system, referring to the chief ray of the central field of view. For a symmetric transmission system, it generally coincides with the center line of rotation of the optical system. For off-axis and reflective systems, the optical axis also appears as a broken line.

[0120] Focal point, when a light ray parallel to the optical axis enters a convex lens, the ideal convex lens should be that all light rays converge at a point behind the lens. This point where all light rays converge is called the focal point.

[0121] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the optical center of the lens or lens group to the focal point when an infinite distant object passes through the lens or lens group to form a clear image on the focal plane. It can also be understood as the vertical distance from the optical center of the lens or lens group to the focal plane. From a practical point of view, it can be understood as the distance from the lens center to the imaging plane. For a fixed-focus lens, the position of the optical center is fixed and therefore the focal length is fixed. For a zoom lens, the change in the optical center of the lens results in a change in the focal length, so the focal length can be adjusted.

[0122] Effective focal length, which refers to the distance between the position where light is focused on the sensor or film after passing through the lens and the front end of the lens. This distance is affected by factors such as optical path length, lens thickness, and refractive index.

[0123] According to the zoom range, lenses can be divided into several categories such as ultra-wide-angle lenses (focal length less than 21mm), wide-angle lenses (focal length 21mm-35mm), standard lenses (focal length 35mm-70mm), medium telephoto lenses (focal length 70mm-135mm), and long focal length lenses (focal length 135-500mm+).

[0124] Zoom helps to enlarge the distant object when shooting, in which optical zoom can support the image subject imaging, increase more pixels, let the subject not only become larger, but also relatively more clear, the resolution and image quality will not change. Optical zoom relies on the structure of the optical lens to achieve zoom, specifically by changing the position of the lens, object and focus three parties to produce. When the image plane moves horizontally, the visual and focal length will change, and the farther scene becomes clearer. Optical zoom changes the focal length of the lens by changing the relative position of each lens in the zoom lens, so that the scene to be photographed can be enlarged or reduced. This image magnification is based on the principle of physics, in the magnification process, the photosensitive element directly senses the light from the subject and forms an image without any electronic amplification processing, and in this process, the photosensitive element is full-face imaging, and the image can maintain the original highest resolution. Therefore, the image obtained by optical zoom not only makes the subject larger, but also relatively clearer. The larger the optical zoom ratio, the farther the scene can be shot.

[0125] The focal length of the zoom lens has two readings, the smaller number is called the wide-angle end (the maximum angle of view can be obtained), and the larger number is called the long-focus end (the longest focal length can be obtained). Any focal length within the range of the two focal lengths can be used during shooting, and the wider the wide-angle end of the lens focal length (i.e. the smaller the number), the wider the scene that can be shot, and the longer the long-focus end (i.e. the larger the number), the farther the scene that can be shot. The number obtained by dividing the long-focus end number by the wide-angle end number is the zoom ratio. For example, the optical zoom ratio is between 2 and 5, which can bring the object 10 meters away to 5-2 meters; the lens with a zoom ratio of 20 or more can not only shoot the scene in front of the eye, but also shoot the object far away; when the zoom ratio is 50, shooting the scene 3000 meters away is equivalent to standing 60 meters away.

[0126] The field of view (FOV) in optical instruments is the angle formed by the two edges of the maximum range of the measured target image that can pass through the lens with the lens as the vertex. The size of the field of view determines the field of view of the optical instrument, the larger the field of view, the larger the field of view, and the smaller the optical magnification. The shorter the focal length, the wider the horizontal field of view, so the image is smaller, and the horizontal field of view becomes narrower as the focal length increases, and the subject increases.

[0127] Aberration, also known as axial chromatic aberration, longitudinal chromatic aberration, or axial aberration, is a phenomenon in which a bundle of parallel light rays converges at different positions before and after the lens. This is because the lens images different wavelengths of light at different positions, so that the final image of different colors cannot coincide on the focal plane, and the dispersion of the composite light is formed.

[0128] The optical path of light in a lens refers to the path that light travels from the entrance surface of the lens to the image plane.

[0129] Spherical and aspherical, mainly refers to the lens geometry of the lens (various camera, microscope, etc.), glasses (including contact lenses), that is, spherical lenses and aspherical lenses. The difference between the two in geometry determines the difference in the direction of refraction of parallel incident light, thereby affecting the quality of the image.

[0130] Spherical lenses, the lens is a spherical arc, and its cross section is also arc-shaped. When light of different wavelengths is incident with parallel optical axis at different positions on the lens, it cannot be focused to a point on the film plane (a plane perpendicular to the center of the lens and the focal point of the lens, passing through the focal point), resulting in the problem of aberration, affecting the quality of the image, such as the phenomenon of reduced clarity and distortion.

[0131] Aspherical lenses, the lens is not a spherical arc, but the edge of the lens is cut off a little, and its cross section is planar. When light is incident on the aspherical mirror, the light can be focused on a point, that is, on the film plane, to eliminate various aberrations.

[0132] Freeform surface, in optics, a surface without rotational symmetry is generally referred to as a freeform surface.

[0133] Object space, with the lens as the boundary, the space where the object is located is the object space.

[0134] Image space, with the lens as the boundary, the space where the image of the object formed by the light passing through the lens is located is the image space.

[0135] With the lens as the boundary, the side where the object is located is the object side, and the surface of the lens close to the object side can be called the object side surface; with the lens as the boundary, the side where the image of the object is located is the image side, and the surface of the lens close to the image side can be called the image side surface.

[0136] The concave-convex judgment of the surface shape of the optical axis region can also be made by the judgment method of a person skilled in the art, that is, by the sign of the curvature radius (abbreviated as R value) of the paraxial region to judge the concave-convex of the surface shape of the optical axis region of the lens. The R value can be commonly used in optical design software such as Zemax or CodeV. The R value is also commonly found in the lens datasheet of the optical design software. In terms of the object side, when the R value is positive, it is determined that the optical axis region of the object side is convex; when the R value is negative, it is determined that the optical axis region of the object side is concave. Conversely, in terms of the image side, when the R value is positive, it is determined that the optical axis region of the image side is concave; when the R value is negative, it is determined that the optical axis region of the image side is convex. The results of this method are consistent with the results of the aforementioned judgment method by the intersection of the light ray / extended light ray and the optical axis, that is, the judgment of the concave-convex of the surface shape by the focus of a light ray parallel to the optical axis located on the object side or the image side of the lens. The "a region is convex (or concave)", "a region is convex (or concave)", or "a convex (or concave) region" described in this specification can be used interchangeably.

[0137] Figure 1 A schematic diagram of a terminal device 1000 is shown. The terminal device 1000 can be a terminal device with a camera or photographing function, such as a cellular phone, a mobile phone, a smart phone, a tablet computer, a handheld computer, a laptop computer, a video camera, a video recorder, a camera, a smart watch, a smart wristband, or other forms of devices with photographing or camera functions. The embodiments of the present application do not specially limit the specific form of the terminal device 1000. For the convenience of explanation and understanding, the terminal device 1000 is taken as a mobile phone as an example for explanation.

[0138] The terminal device 1000 described above, as shown in Figure 1 may include a display panel 400 (DP), a housing 300, a camera compact module 200 (CCM), and the like. The housing 300 forms an accommodation space, and the display panel 400 and the camera compact module 200 are arranged in the accommodation space of the housing 300. The display panel 400 can be a liquid crystal display (LCD) panel, an organic light emitting diode (OLED) display panel, or the like, wherein the OLED display panel 400 can be a flexible display panel or a hard display panel.

[0139] The camera module 200 can be located only on the front of the terminal device 1000 to capture images of the scene on one side of the front of the terminal device 1000; in some embodiments, this can be referred to as a front-facing camera module. Alternatively, it can be located only on the back of the terminal device 1000 to capture images of the scene on one side of the back of the terminal device 1000; in some embodiments, this can be referred to as a rear-facing camera module. It can also be located on both the front and back of the terminal device 1000, such as... Figure 1 As shown, a camera module 200 is provided on the front of the terminal device 1000, and a camera module 200 is also provided on the back of the terminal device 1000. It can capture the scene located on the front side of the terminal device 1000, as well as the scene located on the back side of the terminal device 1000, as long as the corresponding camera module is used when shooting.

[0140] It should be understood that the installation position of the camera module 200 is merely illustrative. In some embodiments, when the camera module 200 is used as a front-facing camera module, it can also be installed in other positions on the terminal device 1000, such as on the left side of the earpiece, the upper center of the terminal device 1000, the lower part (or chin) of the terminal device 1000, or one of the four corners of the terminal device 1000; when the camera module 200 is used as a rear-facing camera module, it can be installed in the upper center or upper right corner of the back of the terminal device 1000. In other embodiments, the camera module 200 may not be located on the main body of the terminal device 1000, but may be located on an edge protruding from the main body of the terminal device 1000, or on a component that is movable or rotatable relative to the main body of the terminal device 1000, such as a component that can extend outward, retract, or rotate from the main body of the terminal device 1000. When the camera module 200 can rotate relative to the terminal device 1000, it functions as both a front-facing camera module and a rear-facing camera module. That is, by rotating the same camera module 200, it can capture images of both the front and rear sides of the terminal device 1000. In other embodiments, when the display screen 400 can be folded, the camera module 200 can function as both a front-facing and a rear-facing camera module. The camera module 200 is used to capture images of either the front or rear sides of the terminal device 1000 as the display screen 400 folds.

[0141] The number of camera modules 200 is not limited in the embodiments of the present application, and can be one, two, four or more, for example, the terminal device 1000 can be provided with one or more camera modules 200 on the front surface, and can be provided with one or more camera modules 200 on the back surface. The number of camera modules is not limited in the embodiments of the present application, and the relative positions of the plurality of camera modules are also not limited. When a plurality of camera modules 200 are provided, the plurality of camera modules 200 can be the same or different, for example, the plurality of camera modules 200 can include different numbers of lenses, or the optical parameters of the lenses are different, or the lenses are arranged at different positions, etc.

[0142] The camera module 200 can be used to shoot videos and / or photos, and can be used to shoot scenes at different distances, for example, the camera module 200 can be used to shoot scenes far away, can be used to shoot scenes close by, and can be used to shoot micro-distance scenes. The embodiments of the present application are not limited.

[0143] Optionally, the terminal device 1000 can further include a lens protection lens for protecting the camera module 200. The lens protection lens is arranged on the housing 300 and is used to cover the camera module 200. When the lens protection lens is used to protect the front camera module, the lens protection lens can cover only the front camera module or cover the entire front surface of the terminal device 1000, wherein when the lens protection lens covers the entire front surface of the terminal device 1000, the lens protection lens can be used to protect the front camera module and the display screen 400 at the same time, and the lens protection lens is a cover glass (CG). When the lens protection lens is used to protect the rear camera module, the lens protection lens can cover the entire back surface of the terminal device 1000, or can be arranged only at a position corresponding to the rear camera module to protect the rear camera module. The material of the lens protection lens can be glass, sapphire, ceramic, etc., and the embodiments of the present application are not limited. In some embodiments, the lens protection lens is transparent, so that light outside the terminal device 1000 can enter the camera module 200 through the lens protection lens.

[0144] It should be noted that the front surface of the terminal device 1000 in the embodiments of the present application can be understood as the side surface of the terminal device 1000 facing the user when the user uses the terminal device 1000, and the back surface of the terminal device 1000 can be understood as the side surface of the terminal device 1000 facing away from the user when the user uses the terminal device 1000.

[0145] It should be understood that, Figure 1The terminal device 1000 shown in the figure is not limited to including the above devices, and can also include other devices, such as a battery, a flash, a fingerprint identification module, an earpiece, a key, a sensor, and the like. The embodiments of the present application are only described by taking a terminal device with the camera module 200 as an example, but the elements installed on the terminal device 1000 are not limited thereto.

[0146] Figure 2 An imaging principle schematic diagram is shown. The light L reflected by the photographed object is projected onto the surface of the image sensor 101 through the optical imaging lens 100 to generate an optical image. The optical image is then converted into an electrical signal, i.e., an analog image signal S1. The analog image signal S1 is converted into a digital image signal S2 through an analog-to-digital converter 102 A / D (also referred to as an A / D converter) 203. The digital image signal S2 is processed through an image processor 103, such as a digital signal processing (DSP) chip, to form a compressed image signal S3, which can be stored in a memory 104 for processing. Finally, the image is displayed through a display or display screen 400.

[0147] The optical lens affects the imaging quality and imaging effect. The light of the object passes through the optical lens to form a clear image on the focusing plane, and the image of the object is recorded through a photosensitive material or a photosensitive device. The optical lens can be an integral whole composed of one or more lenses. The lens can be a plastic lens or a glass lens, can be a spherical lens or a non-spherical lens, and can be a refractive lens or a reflective lens. The optical lens in the embodiments of the present application is a zoom lens. The focal length of the optical lens can be adjusted by adjusting the relative positions of the lenses.

[0148] The image sensor 101 is a semiconductor chip, the surface of which contains hundreds of thousands to millions of photodiodes that generate electric charges when exposed to light, which are converted into digital signals by the analog-to-digital converter 102 chip. The image sensor 101 can be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). The charge coupled device image sensor 101 is made of a high-sensitivity semiconductor material that can convert light into electric charges, which are converted into digital signals by the analog-to-digital converter 102 chip. The CCD is composed of many light-sensitive units, usually in units of millions of pixels. When the surface of the CCD is exposed to light, each light-sensitive unit reflects the electric charges on the component, and the signals generated by all the light-sensitive units are added together to form a complete picture. The complementary metal-oxide semiconductor CMOS is mainly made of silicon and germanium, two elements that coexist on the CMOS, with N (negative) and P (positive) semiconductors. The electric current generated by the two complementary effects can be recorded and interpreted into images by the processing chip. In some embodiments, the image sensor 101 can also be referred to as a light-sensitive chip, a light-sensitive element, etc.

[0149] The function of the image processor 103 is to optimize the digital image signal through a series of complex mathematical algorithm operations, and finally transmit the processed signal to the display. The image processor 103 can be an image processing chip or a digital signal processing chip (DSP), which is used to quickly transmit the data obtained by the light-sensitive chip to the central processing unit and refresh the light-sensitive chip. Therefore, the quality of the DSP chip directly affects the picture quality (such as color saturation, definition, etc.).

[0150] It should be understood that the "lens" in the embodiments of the present application should be understood as a whole lens, which includes one or more lenses.

[0151] Figure 3 A structural diagram of an optical imaging lens 100 is shown, and the following will be described in combination with Figure 3 The structure of the optical imaging lens 100 is described.

[0152] The optical imaging lens 100 provided in the application comprises, in sequence from the object side to the image side, a first lens 10 with positive refractive power, the object side surface of the first lens 10 being convex, and the image side surface of the first lens 10 being concave; a second lens 20 with negative refractive power, the object side surface of the second lens 20 being convex, and the image side surface of the second lens 20 being concave; a third lens 30 with positive refractive power; a fourth lens 40 with negative refractive power; the image side surface of the fourth lens 40 being concave; a fifth lens 50 with positive refractive power, the object side surface of the fifth lens 50 being convex, and the image side surface of the fifth lens 50 being convex; and a sixth lens 60 with negative refractive power, the object side surface of the sixth lens 60 being convex, and the image side surface of the sixth lens 60 being concave.

[0153] In the optical imaging lens 100, the maximum entrance pupil diameter is EPDmax, and the minimum entrance pupil diameter is EPDmin, and (EPDmax-EPDmin) / EPDmax>0.35 is satisfied.

[0154] In the optical imaging lens 100 provided in the embodiment of the application, the maximum entrance pupil diameter of the optical imaging lens is EPDmax, the minimum entrance pupil diameter of the optical imaging lens is EPDmin, and (EPDmax-EPDmin) / EPDmax>0.35 is satisfied, so that the optical imaging lens has a large variable aperture change range, which is beneficial to the imaging effect of the optical imaging lens in switching between bright and dark environments, and the number of lenses of the optical imaging lens is six, the cost is lower, the volume is smaller, and a higher-quality imaging picture can be obtained.

[0155] In some embodiments, the distance Dtstop between the maximum aperture position and the minimum aperture position of the optical imaging lens 100 in the optical axis direction, and the maximum distance sag11 between the intersection of the object side surface of the first lens 10 and the optical axis and any point on the object side surface of the first lens 10 in the optical axis direction satisfy 0≤Dstop / sag11<0.9.

[0156] It can be understood that 0≤Dstop / sag11<0.9 is satisfied, so that the variable aperture position located on the object side of the first lens 10 is reasonably arranged, which is beneficial to the installation of the variable aperture assembly.

[0157] In some embodiments, the effective focal length of the second lens 20 is f2, and the total effective focal length of the optical imaging lens 100 is f.

[0158] -0.5<f / f2<-0.2.

[0159] It can be understood that -0.5<f / f2<-0.2 is satisfied, so that the ratio of the effective focal length of the second lens 20 to the total effective focal length of the imaging lens is effectively controlled, the aberration introduced by the first lens 10 is balanced, and the imaging quality is improved.

[0160] In some embodiments, the effective focal length of the third lens 20 is f3, and the total effective focal length of the optical imaging lens 100 is f;

[0161] 2.5 < f3 / f < 10.

[0162] It can be understood that, by satisfying 2.5 < f3 / f < 10, the ratio of the effective focal length of the third lens 30 to the total effective focal length of the imaging lens can be effectively controlled, the light can be smoothly transmitted to the subsequent lens, the system aberration can be reduced, and the imaging quality can be improved.

[0163] In some embodiments, the distance from the object side of the first lens 10 to the imaging surface of the optical imaging lens 100 in the optical axis direction is TTL, the curvature radius of the object side of the first lens 10 is R11, and the curvature radius of the image side of the sixth lens 60 is R62;

[0164] 10 < TTL / (R62 / R11) < 11.5.

[0165] It can be understood that, by satisfying 10 < TTL / (R62 / R11) < 11.5, the shape of the entrance and exit surfaces of the lens can be effectively balanced, which is beneficial to obtain a smaller TTL, while reducing the lens aberration and improving the imaging quality.

[0166] In some embodiments, the maximum half field of view of the optical imaging lens 100 is HFOV;

[0167] EPDmax*tan(HFOV) > 2.9.

[0168] It can be understood that, by satisfying EPDmax*tan(HFOV) > 2.9, the optical imaging lens 100 can have a larger light aperture, which is beneficial to improve the imaging effect of the optical imaging lens 100 in a dark environment.

[0169] In some embodiments, the distance from the object side of the first lens 10 to the imaging surface of the optical imaging lens 100 in the optical axis direction is TTL, and half of the diagonal length of the effective pixel area on the imaging surface of the photographic lens is ImgH;

[0170] TTL / ImgH ≤ 1.4.

[0171] It can be understood that, by satisfying TTL / ImgH ≤ 1.4, the TTL of the lens can be effectively lowered, thereby realizing the miniaturization of the module.

[0172] In some embodiments, the effective focal length of the first lens 10 is f1, the effective focal length of the sixth lens 60 is f6, the curvature radius of the object side of the first lens 10 is R11, and the curvature radius of the image side of the sixth lens 60 is R62;

[0173] 4.5 < f1 / R11-f6 / R62 < 5.

[0174] It can be understood that 4.5 < f1 / R11-f6 / R62 < 5 is met, the effective focal lengths of the first lens 10 and the sixth lens 60 can be effectively constrained, the optical powers of the two lenses can be reasonably distributed, the system aberration can be balanced, and thus the system imaging quality is improved.

[0175] In some embodiments, the effective focal length of the first lens 10 is f1, the effective focal length of the fourth lens 40 is f4, and the effective focal length of the fifth lens 50 is f5;

[0176] -1 < f1 / (f4+f5) < 0.

[0177] It can be understood that -1 < f1 / (f4+f5) < 0 is met, the optical powers of the first lens 10, the fourth lens 40 and the fifth lens 50 can be reasonably distributed, the system aberration can be balanced, and thus the system imaging quality is improved.

[0178] In some embodiments, the central thickness of the second lens 20 on the optical axis is CT2, the central thickness of the third lens 30 on the optical axis is CT3, and the distance between the image side surface of the second lens 20 and the object side surface of the third lens 30 on the optical axis is DT23;

[0179] 1.5 < (CT2+CT3) / DT23 < 2.5.

[0180] It can be understood that 1.5 < (CT2+CT3) / DT23 < 2.5 is met, the structure distribution of the second lens 20 and the third lens 30 can be more reasonable, and the assembly of the imaging lens is facilitated.

[0181] In some embodiments, the central thickness of the fourth lens 40 on the optical axis is CT4, the central thickness of the fifth lens 50 on the optical axis is CT5, and the central thickness of the sixth lens 60 on the optical axis is CT6;

[0182] 1.3 < (CT4) / (CT5-CT6) < 2.

[0183] It can be understood that 1.3 < (CT4) / (CT5-CT6) < 2 is met, the structures of the fourth lens 40, the fifth lens 50 and the sixth lens 60 are more uniform and reasonable, and the processing and forming of the lenses are facilitated.

[0184] In some embodiments, the maximum distance from the intersection of the optical axis to any point on the object side surface of the fifth lens 50 in the direction of the optical axis is Sag51, the maximum distance from the intersection of the optical axis to any point on the image side surface of the sixth lens 60 in the direction of the optical axis is Sag62, the central thickness of the fifth lens 50 on the optical axis is CT5, and the central thickness of the sixth lens 60 on the optical axis is CT6.

[0185] 1<|Sag51 / CT5|+|Sag62 / CT6|<2.

[0186] It can be understood that, by satisfying 1<|Sag51 / CT5|+|Sag62 / CT6|<2, the surface shape of the fifth lens 50 and the sixth lens 60 can be smoother, which is beneficial to the processing and molding of the lenses. At the same time, the field curvature of the imaging lens can be effectively balanced.

[0187] In some embodiments, the maximum distance from the object side surface of the first lens 10 to the image side surface of the sixth lens 60 on the optical axis is Td, and the sum of the thicknesses of all the lenses of the optical imaging lens 100 on the optical axis is ∑CT.

[0188] 1.5<Td / ∑CT<1.8.

[0189] It can be understood that, by satisfying 1.5<Td / ∑CT<1.8, the spatial arrangement of the imaging lens lens group can be facilitated, and the volume and total length of the imaging lens lens group can be reduced to meet the miniaturization requirement.

[0190] In some embodiments, the object side surface of the third lens 30 is a convex surface, and the image side surface of the third lens 30 is a convex surface; or,

[0191] The object side surface of the third lens 30 is a convex surface, and the image side surface of the third lens 30 is a concave surface. The object side surface of the fourth lens 40 is a convex surface; or,

[0192] The object side surface of the fourth lens 40 is a concave surface.

[0193] Embodiment One

[0194] Please refer to Figures 4 to 9 , which shows the first embodiment of the optical imaging lens 100 of the present application.

[0195] In the present embodiment, the optical imaging lens 100 includes, in order from the object side A to the image side B, the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, and the sixth lens 60, a total of six lenses with refractive power, a variable aperture 30, and an image plane 40.

[0196] The first lens 10 has positive refractive power. The object side E11 of the first lens 10 is a convex surface, and the image side E12 of the first lens 10 is a concave surface. The object side E11 and the image side E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0197] The second lens 20 has negative refractive power. The object side E21 of the second lens 20 is a convex surface, and the image side E22 of the second lens 20 is a concave surface. The object side E21 and the image side E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0198] The third lens 30 has positive refractive power. The object side E31 of the third lens 30 is a convex surface, and the image side E32 of the third lens 30 is a convex surface. The object side E31 and the image side E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0199] The fourth lens 40 has negative refractive power. The object side E41 of the fourth lens 40 is a convex surface, and the image side E42 of the fourth lens 40 is a concave surface. The object side E41 and the image side E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0200] The fifth lens 50 has positive refractive power. The object side E51 of the fifth lens 50 is a convex surface, and the image side E52 of the fifth lens 50 is a convex surface. The object side E51 and the image side E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0201] The sixth lens 60 has negative refractive power. The object side E61 of the sixth lens 60 is a convex surface, and the image side E62 of the sixth lens 60 is a concave surface. The object side E61 and the image side E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0202] In the optical imaging lens 100 of the present embodiment, the object side A and the image side B of each lens from the first lens 10 to the second lens 20 are a total of twelve curved surfaces. If each curved surface is an aspherical surface, these aspherical surfaces are defined by the following formula:

[0203]

[0204] wherein:

[0205] Y represents the perpendicular distance of a point on the aspherical curved surface to the optical axis I;

[0206] Z represents the depth of the aspherical surface (the perpendicular distance between a point on the aspherical surface with a distance Y to the optical axis I and a tangent plane at the vertex of the aspherical surface on the optical axis I);

[0207] R represents the radius of curvature of the lens surface at the optical axis I;

[0208] K is a conic constant;

[0209] a i is a non-spherical coefficient of the i-th order.

[0210] The optical data of the optical imaging lens 100 of the first embodiment is shown in Figure 4 , and the aspherical data is shown in Figure 5 . In the optical imaging lens 100 of the present embodiment, the ratio of the focal length to the entrance pupil diameter (f-number) of the overall optical imaging lens 100 is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, wherein the units of the image height, the radius of curvature, the thickness and the focal length of the optical imaging lens 100 are all millimeters (mm). In the present embodiment, f = 5.89 mm; HFOV = 40.8°; FNO = 1.68-2.78.

[0211] , (EPDmax-EPDmin) / EPDmax = 0.39; f / f2 = -0.46; f3 / f = 6.9; TTL / (R62 / R11) = 10.10; EPDmax*tan(HFOV) = 3.01; Dstop / sag11 = 0.38; TTL / ImagH = 1.40; f1 / R11-f6 / R62 = 4.71; F1 / (F4+F5) = -0.17; (CT2+CT3) / DT23 = 1.88; (CT4) / (CT5-CT6) = 1.81; |Sag51 / CT5|+|Sag62 / CT6| = 1.42; Td / ∑CT = 1.72.

[0212] The astigmatic field curves of the optical imaging lens 100 of the present embodiment in the large aperture state on the image plane 40 are shown in Figure 6 , and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in Figure 7 ; the astigmatic field curves of the optical imaging lens 100 of the present embodiment in the small aperture state on the image plane 40 are shown in Figure 8 , and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in Figure 9 .

[0213] Embodiment Two

[0214] Reference is made to Figures 10 to 15 , which illustrates a second embodiment of the optical imaging lens 100 of the present application.

[0215] In this embodiment, the optical imaging lens 100 comprises, in order from the object side A to the image side B, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50, and a sixth lens 60, a total of six lenses with refractive power, a variable aperture 30, and an image plane 40.

[0216] The first lens 10 has positive refractive power. The object side surface E11 of the first lens 10 is convex, and the image side surface E12 of the first lens 10 is concave. The object side surface E11 and the image side surface E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0217] The second lens 20 has negative refractive power. The object side surface E21 of the second lens 20 is convex, and the image side surface E22 of the second lens 20 is concave. The object side surface E21 and the image side surface E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0218] The third lens 30 has positive refractive power. The object side surface E31 of the third lens 30 is convex, and the image side surface E32 of the third lens 30 is convex. The object side surface E31 and the image side surface E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0219] The fourth lens 40 has negative refractive power. The object side surface E41 of the fourth lens 40 is convex, and the image side surface E42 of the fourth lens 40 is concave. The object side surface E41 and the image side surface E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0220] The fifth lens 50 has positive refractive power. The object side surface E51 of the fifth lens 50 is convex, and the image side surface E52 of the fifth lens 50 is convex. The object side surface E51 and the image side surface E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0221] The sixth lens 60 has negative refractive power. The object side surface E61 of the sixth lens 60 is convex, and the image side surface E62 of the sixth lens 60 is concave. The object side surface E61 and the image side surface E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0222] The optical data of the optical imaging lens 100 of the second embodiment is shown in Table 2 Figure 9 , and the aspherical surface data is shown in Table 3 Figure 10The ratio of the focal length of the overall optical imaging lens 100 to the entrance pupil diameter (f-number) is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, wherein the units of the image height, the radius of curvature, the thickness and the focal length of the optical imaging lens 100 are all millimeters (mm). In this embodiment, f = 5.66 mm; HFOV = 41.6°; FNO = 1.68-2.80.

[0223] and (EPDmax-EPDmin) / EPDmax = 0.40; f / f2 = -0.37; f3 / f = 3.95; TTL / (R62 / R11) = 11.10; EPDmax*tan(HFOV) = 2.99; Dstop / sag11 = 0.74; TTL / ImagH = 1.40; f1 / R11-f6 / R62 = 4.82; F1 / (F4+F5) = -0.30; (CT2+CT3) / DT23 = 2.15; (CT4) / (CT5-CT6) = 1.50; |Sag51 / CT5|+|Sag62 / CT6| = 1.03; Td / ∑CT = 1.60.

[0224] The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in Figure 12 ; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in Figure 13 ; the astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in Figure 14 ; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in Figure 15 .

[0225] Embodiment Three

[0226] Please refer to Figures 16 to 21 for the third embodiment of the optical imaging lens 100 of the present application.

[0227] In the embodiment, the optical imaging lens 100 comprises, sequentially arranged along the direction from the object side A to the image side B, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50 and a sixth lens 60, a total of six lenses with refractive power, a variable aperture 30 and an image plane 40.

[0228] The first lens 10 has positive refractive power. The object side surface E11 of the first lens 10 is a convex surface, and the image side surface E12 of the first lens 10 is a concave surface. The object side surface E11 and the image side surface E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0229] The second lens 20 has negative refractive power. The object side surface E21 of the second lens 20 is a convex surface, and the image side surface E22 of the second lens 20 is a concave surface. The object side surface E21 and the image side surface E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0230] The third lens 30 has positive refractive power. The object side surface E31 of the third lens 30 is a convex surface, and the image side surface E32 of the third lens 30 is a convex surface. The object side surface E31 and the image side surface E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0231] The fourth lens 40 has negative refractive power. The object side surface E41 of the fourth lens 40 is a convex surface, and the image side surface E42 of the fourth lens 40 is a concave surface. The object side surface E41 and the image side surface E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0232] The fifth lens 50 has positive refractive power. The object side surface E51 of the fifth lens 50 is a convex surface, and the image side surface E52 of the fifth lens 50 is a convex surface. The object side surface E51 and the image side surface E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0233] The sixth lens 60 has negative refractive power. The object side surface E61 of the sixth lens 60 is a convex surface, and the image side surface E62 of the sixth lens 60 is a concave surface. The object side surface E61 and the image side surface E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0234] The optical data of the optical imaging lens 100 of the third embodiment is shown in Table 1, and the aspherical surface data is shown in Table 2. Figure 16 Figure 17 ​The ratio of the focal length to the entrance pupil diameter (f-number) of the overall optical imaging lens 100 is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, wherein the units of the image height, the radius of curvature, the thickness and the focal length of the optical imaging lens 100 are all millimeters (mm). In this embodiment, f = 5.89 mm; HFOV = 40.8°; FNO = 1.68-2.78.

[0235] and (EPDmax-EPDmin) / EPDmax = 0.40; f / f2 = -0.44; f3 / f = 8.08; TTL / (R62 / R11) = 10.44; EPDmax*tan(HFOV) = 2.98; Dstop / sag11 = 0.20; TTL / ImagH = 1.40; f1 / R11-f6 / R62 = 4.77; F1 / (F4+F5) = -0.16; (CT2+CT3) / DT23 = 1.55; (CT4) / (CT5-CT6) = 1.91; |Sag51 / CT5|+|Sag62 / CT6| = 1.38; Td / ∑CT = 1.73.

[0236] The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in Figure 18 ; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in Figure 19 ; the astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in Figure 20 ; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in Figure 21 .

[0237] Embodiment Four

[0238] Reference is made to Figures 22 to 27 for showing the fourth embodiment of the optical imaging lens 100 of the present application.

[0239] In the embodiment, the optical imaging lens 100 comprises, sequentially arranged along the direction from the object side A to the image side B, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50 and a sixth lens 60, a total of six lenses with refractive power, a variable aperture 30 and an image plane 40.

[0240] The first lens 10 has positive refractive power. The object side surface E11 of the first lens 10 is a convex surface, and the image side surface E12 of the first lens 10 is a concave surface. The object side surface E11 and the image side surface E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0241] The second lens 20 has negative refractive power. The object side surface E21 of the second lens 20 is a convex surface, and the image side surface E22 of the second lens 20 is a concave surface. The object side surface E21 and the image side surface E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0242] The third lens 30 has positive refractive power. The object side surface E31 of the third lens 30 is a convex surface, and the image side surface E32 of the third lens 30 is a convex surface. The object side surface E31 and the image side surface E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0243] The fourth lens 40 has negative refractive power. The object side surface E41 of the fourth lens 40 is a convex surface, and the image side surface E42 of the fourth lens 40 is a concave surface. The object side surface E41 and the image side surface E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0244] The fifth lens 50 has positive refractive power. The object side surface E51 of the fifth lens 50 is a convex surface, and the image side surface E52 of the fifth lens 50 is a convex surface. The object side surface E51 and the image side surface E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0245] The sixth lens 60 has negative refractive power. The object side surface E61 of the sixth lens 60 is a convex surface, and the image side surface E62 of the sixth lens 60 is a concave surface. The object side surface E61 and the image side surface E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0246] The optical data of the optical imaging lens 100 of the fourth embodiment is shown in Table 1, and the aspherical surface data is shown in Table 2. Figure 22 Figure 23 ​The ratio of the focal length of the overall optical imaging lens 100 to the entrance pupil diameter (f-number) is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, wherein the units of the image height, the radius of curvature, the thickness and the focal length of the optical imaging lens 100 are all millimeters (mm). In this embodiment, f = 5.89 mm; HFOV = 40.8°; FNO = 1.68-2.78.

[0247] and (EPDmax-EPDmin) / EPDmax = 0.41; f / f2 = -0.35; f3 / f = 6.41; TTL / (R62 / R11) = 10.76; EPDmax*tan(HFOV) = 2.98; Dstop / sag11 = 0.82; TTL / ImagH = 1.36; f1 / R11-f6 / R62 = 4.92; F1 / (F4+F5) = -0.18; (CT2+CT3) / DT23 = 1.89; (CT4) / (CT5-CT6) = 1.48; |Sag51 / CT5|+|Sag62 / CT6| = 1.76; Td / ∑CT = 1.70.

[0248] The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in Figure 24 ; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in Figure 25 ; the astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in Figure 26 ; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in Figure 27 .

[0249] Embodiment Five

[0250] Please refer to Figures 28 to 33 for the fifth embodiment of the optical imaging lens 100 of the present application.

[0251] In the embodiment, the optical imaging lens 100 comprises, sequentially arranged along the direction from the object side A to the image side B, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50 and a sixth lens 60, a total of six lenses with refractive power, a variable aperture 30 and an image plane 40.

[0252] The first lens 10 has positive refractive power. The object side surface E11 of the first lens 10 is a convex surface, and the image side surface E12 of the first lens 10 is a concave surface. The object side surface E11 and the image side surface E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0253] The second lens 20 has negative refractive power. The object side surface E21 of the second lens 20 is a convex surface, and the image side surface E22 of the second lens 20 is a concave surface. The object side surface E21 and the image side surface E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0254] The third lens 30 has positive refractive power. The object side surface E31 of the third lens 30 is a convex surface, and the image side surface E32 of the third lens 30 is a concave surface. The object side surface E31 and the image side surface E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0255] The fourth lens 40 has negative refractive power. The object side surface E41 of the fourth lens 40 is a convex surface, and the image side surface E42 of the fourth lens 40 is a concave surface. The object side surface E41 and the image side surface E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0256] The fifth lens 50 has positive refractive power. The object side surface E51 of the fifth lens 50 is a convex surface, and the image side surface E52 of the fifth lens 50 is a convex surface. The object side surface E51 and the image side surface E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0257] The sixth lens 60 has negative refractive power. The object side surface E61 of the sixth lens 60 is a convex surface, and the image side surface E62 of the sixth lens 60 is a concave surface. The object side surface E61 and the image side surface E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0258] The optical data of the optical imaging lens 100 of the fifth embodiment is shown in Table 1, and the aspherical surface data is shown in Table 2. Figure 28 Figure 29 ​The ratio of the focal length to the entrance pupil diameter (f-number) of the overall optical imaging lens 100 is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, and the image height of the optical imaging lens 100 is ImagH, the radius of curvature is R, the thickness is T, and the focal length is f, all of which are in millimeters (mm). In this embodiment, f = 5.91 mm; HFOV = 40.3°; FNO = 1.69-2.81.

[0259] and (EPDmax-EPDmin) / EPDmax = 0.40; f / f2 = -0.48; f3 / f = 9.94; TTL / (R62 / R11) = 10.55; EPDmax*tan(HFOV) = 2.95; Dstop / sag11 = 0; TTL / ImagH = 1.40; f1 / R11-f6 / R62 = 4.79; F1 / (F4+F5) = -0.13; (CT2+CT3) / DT23 = 1.73; (CT4) / (CT5-CT6) = 1.74; |Sag51 / CT5|+|Sag62 / CT6| = 1.84; Td / ∑CT = 1.79.

[0260] The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in Figure 30 , and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in Figure 31 ; the astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in Figure 32 ; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in Figure 33 .

[0261] Embodiment Six

[0262] Please refer to Figures 34 to 39 for a sixth embodiment of the optical imaging lens 100 of the present application.

[0263] In the present embodiment, the optical imaging lens 100 comprises, sequentially arranged along the direction from the object side A to the image side B, a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50 and a sixth lens 60, a total of six lenses with refractive power, a variable aperture 30 and an image plane 40.

[0264] The first lens 10 has positive refractive power. The object side surface E11 of the first lens 10 is a convex surface, and the image side surface E12 of the first lens 10 is a concave surface. The object side surface E11 and the image side surface E12 of the first lens 10 are both aspherical surfaces, but are not limited thereto.

[0265] The second lens 20 has negative refractive power. The object side surface E21 of the second lens 20 is a convex surface, and the image side surface E22 of the second lens 20 is a concave surface. The object side surface E21 and the image side surface E22 of the second lens 20 are both aspherical surfaces, but are not limited thereto.

[0266] The third lens 30 has positive refractive power. The object side surface E31 of the third lens 30 is a convex surface, and the image side surface E32 of the third lens 30 is a convex surface. The object side surface E31 and the image side surface E32 of the third lens 30 are both aspherical surfaces, but are not limited thereto.

[0267] The fourth lens 40 has negative refractive power. The object side surface E41 of the fourth lens 40 is a concave surface, and the image side surface E42 of the fourth lens 40 is a concave surface. The object side surface E41 and the image side surface E42 of the fourth lens 40 are both aspherical surfaces, but are not limited thereto.

[0268] The fifth lens 50 has positive refractive power. The object side surface E51 of the fifth lens 50 is a convex surface, and the image side surface E52 of the fifth lens 50 is a convex surface. The object side surface E51 and the image side surface E52 of the fifth lens 50 are both aspherical surfaces, but are not limited thereto.

[0269] The sixth lens 60 has negative refractive power. The object side surface E61 of the sixth lens 60 is a convex surface, and the image side surface E62 of the sixth lens 60 is a concave surface. The object side surface E61 and the image side surface E62 of the sixth lens 60 are both aspherical surfaces, but are not limited thereto.

[0270] The optical data of the optical imaging lens 100 of the sixth embodiment is shown in Table 1 below, and the aspherical surface data is shown in Table 2 below. Figure 34 Figure 35 ​The ratio of the focal length to the entrance pupil diameter (f-number) of the overall optical imaging lens 100 is FNO, the entrance pupil diameter of the optical imaging lens 100 is EPD, the field of view (FOV) is HFOV, the total effective focal length of the optical imaging lens 100 is f, the distance between the object side E11 of the first lens 10 and the image plane 40 in the direction of the optical axis I is TTL, and the image height of the optical imaging lens 100 is ImagH. In this embodiment, f = 5.72 mm, HFOV = 41.3°, FNO = 1.68-2.84, and ImagH = 2.00 mm.

[0271] Further, (EPDmax-EPDmin) / EPDmax = 0.41, f / f2 = -0.30, f3 / f = 2.88, TTL / (R62 / R11) = 10.97, EPDmax*tan(HFOV) = 3.04, Dstop / sag11 = 0.76, TTL / ImagH = 1.39, f1 / R11-f6 / R62 = 4.99, F1 / (F4+F5) = -0.67, (CT2+CT3) / DT23 = 1.80, (CT4) / (CT5-CT6) = 1.39, |Sag51 / CT5|+|Sag62 / CT6| = 1.26, and Td / ∑CT = 1.70.

[0272] The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. Figure 38 Figure 39 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the large aperture state on the image plane 40 are shown in FIG. 12A; and the distortion aberration of the optical imaging lens 100 in the large aperture state on the image plane 40 is shown in FIG. 12B. Figure 36 Figure 37 The astigmatic field curves of the optical imaging lens 100 in this embodiment in the small aperture state on the image plane 40 are shown in FIG. 13A; and the distortion aberration of the optical imaging lens 100 in the small aperture state on the image plane 40 is shown in FIG. 13B. <

Claims

1. An optical imaging lens, characterized in that, From the object side to the image side, the optical imaging lens includes: A first lens with positive optical power, wherein the object side of the first lens is convex and the image side of the first lens is concave; A second lens with negative optical power, wherein the object side of the second lens is convex and the image side of the second lens is concave; A third lens with positive optical power. A fourth lens with negative optical power; the image-side surface of the fourth lens is concave. A fifth lens with positive optical power, wherein the object-side surface of the fifth lens is convex and the image-side surface of the fifth lens is convex; A sixth lens with negative optical power, wherein the object-side surface of the sixth lens is convex and the image-side surface of the sixth lens is concave; The maximum entrance pupil diameter of the optical imaging lens is EPDmax, and the minimum entrance pupil diameter of the optical imaging lens is EPDmin, satisfying (EPDmax-EPDmin) / EPDmax>0.

35.

2. The optical imaging lens according to claim 1, characterized in that: The distance Dtstop between the maximum and minimum aperture positions of the optical imaging lens along the optical axis, and the maximum distance sag11 from the intersection of the object side surface of the first lens and the optical axis to any point on the object side surface of the first lens along the optical axis, satisfy 0≤Dstop / sag11<0.

9.

3. The optical imaging lens according to claim 1, characterized in that: The effective focal length of the second lens is f2, and the total effective focal length of the optical imaging lens is f -0.

5. <f / f2<-0.2。 4. The optical imaging lens according to claim 1, characterized in that: The effective focal length of the third lens is f3, and the total effective focal length of the optical imaging lens is f2.

5. <f3 / f<10。 5. The optical imaging lens according to claim 1, characterized in that: The distance from the object-side surface of the first lens to the imaging surface in the optical axis direction of the optical imaging lens is TTL, the radius of curvature of the object-side surface of the first lens is R11, and the radius of curvature of the image-side surface of the sixth lens is R62; 10 <TTL / (R62 / R11)<11.5。 6. The optical imaging lens according to claim 1, characterized in that: The maximum half field of view of the optical imaging lens is HFOV; EPDmax*tan(HFOV)>2.

9.

7. The optical imaging lens according to claim 1, characterized in that: The distance from the object side of the first lens of the optical imaging lens to the imaging surface in the optical axis direction is TTL; half the diagonal length of the effective pixel area on the imaging surface of the photographic lens is ImgH; TTL / ImagH≤1.

4.

8. The optical imaging lens according to claim 1, characterized in that: The effective focal length of the first lens is f1, the effective focal length of the sixth lens is f6, the radius of curvature of the object-side surface of the first lens is R11, and the radius of curvature of the image-side surface of the sixth lens is R62; 4.5 <f1 / R11-f6 / R62<5。 9. The optical imaging lens according to claim 1, characterized in that: The effective focal length of the first lens is f1, the effective focal length of the fourth lens is f4, and the effective focal length of the fifth lens is f5; -1 <F1 / (F4+F5)<0。 10. The optical imaging lens according to claim 1, characterized in that: The center thickness of the second lens on the optical axis is CT2, the center thickness of the third lens on the optical axis is CT3, and the distance between the image side of the second lens and the object side of the third lens on the optical axis is DT23; 1.5 < (CT2 + CT3) / DT23 < 2.

5.

11. The optical imaging lens according to claim 1, characterized in that: The center thickness of the fourth lens on the optical axis is CT4, the center thickness of the fifth lens on the optical axis is CT5, and the center thickness of the sixth lens on the optical axis is CT6; 1.3 < (CT4) / (CT5-CT6) < 2.

12. The optical imaging lens according to claim 1, characterized in that: The maximum distance from the point where the object side of the fifth lens intersects the optical axis to any point on the object side of the fifth lens in the optical axis direction is Sag51. The maximum distance from the point where the image side of the sixth lens intersects the optical axis to any point on the image side of the sixth lens in the optical axis direction is Sag62. The center thickness of the fifth lens on the optical axis is CT5, and the center thickness of the sixth lens on the optical axis is CT6. 1<|Sag51 / CT5|+|Sag62 / CT6|<2.

13. The optical imaging lens according to claim 1, characterized in that: The maximum distance along the optical axis from the object-side surface of the first lens to the image-side surface of the sixth lens is Td, and the total thickness along the optical axis of all lenses in the optical imaging lens is ∑CT; 1.5 <Td / ∑CT<1.8。 14. The optical imaging lens according to any one of claims 1 to 13, characterized in that: The object-side surface of the third lens is convex, and the image-side surface of the third lens is convex; or, The object-side surface of the third lens is convex, and the image-side surface of the third lens is concave; and / or, The object-side surface of the fourth lens is convex; or, The object-side surface of the fourth lens is concave.

15. A camera module, characterized in that: Includes an optical imaging lens as described in any one of claims 1 to 14 and a variable aperture, the variable aperture being used to adjust the amount of light passing through the optical imaging lens.

16. A terminal device, characterized in that: Includes the camera module as described in claim 15.

Images