Optical imaging lens

Abstract

The present application discloses an optical imaging lens. Among them, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis, a first lens having a focal power; a second lens having a positive focal power; a third lens having a negative focal power; a fourth lens having a focal power; a fifth lens having a focal power; a sixth lens having a focal power; a seventh lens having a positive focal power; and an eighth lens having a negative focal power. Wherein, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: f×TAN(FOV / 2)>4.0 mm, and the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: f / (CT7 + CT8)≥5.0.

Description

Technical Field

[0001] The present application relates to an optical imaging lens, and particularly to an optical imaging lens including eight lenses. Background Art

[0002] In recent years, with the rapid development of portable electronic products such as smart phones and tablet computers, people have higher and higher requirements for imaging lenses mounted on portable electronic devices. On the one hand, people pursue the continuous miniaturization and thinning of portable electronic products. On the other hand, people require that the imaging lenses mounted on portable electronic devices also have high imaging quality in dark environments. This requires the supporting optical imaging lenses to meet the requirements of miniaturization and high imaging quality in dark environments at the same time. In addition, imaging lenses with fewer traditional lenses are difficult to achieve large image plane characteristics and cannot well meet the current requirements of people for daily shooting. Summary of the Invention

[0003] The present application provides an optical imaging lens applicable to portable electronic products, which can at least solve or partially solve the above at least one disadvantage in the prior art.

[0004] One aspect of the present application provides such an optical imaging lens, which sequentially includes, along the optical axis from the object side to the image side: a first lens having a focal power; a second lens having a positive focal power; a third lens having a negative focal power; a fourth lens having a focal power; a fifth lens having a focal power; a sixth lens having a focal power; a seventh lens having a positive focal power; and an eighth lens having a negative focal power.

[0005] In one embodiment, the total effective focal length f of the optical imaging lens and the maximum field of view angle FOV of the optical imaging lens satisfy: f×TAN(FOV / 2)>4.0mm.

[0006] In one embodiment, the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: f / (CT7+CT8)≥5.0.

[0007] In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: TTL / EPD≤2.0.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R2 of the image side surface of the first lens satisfy: f / R2>1.5.

[0009] In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side of the fifth lens satisfy: f / R10 < -0.5.

[0010] In one embodiment, the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens satisfy: -10 < R4 / R3 < -3.0.

[0011] In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object side of the seventh lens, and the radius of curvature R14 of the image side of the seventh lens satisfy: f / R13 + f / R14 > 3.5.

[0012] In one embodiment, the radius of curvature R15 of the object side of the eighth lens and the radius of curvature R16 of the image side of the eighth lens satisfy: 1 < R15 / R16 < 2.

[0013] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f8 of the eighth lens satisfy: |f / f3 - f / f8| < 0.5.

[0014] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy: -5.0 < f5 / f4 < 0.

[0015] In one embodiment, the effective focal length f7 of the seventh lens and the combined focal length f12 of the first lens and the second lens satisfy: 1.5 < f7 / f12 < 5.0.

[0016] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f / |f1| ≤ 0.3.

[0017] In one embodiment, the Abbe number V4 of the fourth lens, the Abbe number V5 of the fifth lens, and the Abbe number V6 of the sixth lens satisfy: 30 < (V4 + V5 + V6) / 3 < 40.

[0018] In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f / EPD ≤ 1.5.

[0019] The optical imaging lens provided in this application includes multiple lenses, such as the first lens to the eighth lens. By reasonably setting the mutual relationship between the total effective focal length of the optical imaging lens and the maximum field of view angle of the optical imaging lens, and optimizing the optical power and surface shape of each lens, and reasonably matching them with each other, the optical imaging lens is miniaturized and thinned while having a large imaging surface. Brief Description of the Drawings

[0020] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objectives, and advantages of the present application will become more apparent. In the drawings:

[0021] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0022] Figures 2A to 2D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1 are respectively shown;

[0023] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0024] Figures 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2 are respectively shown;

[0025] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0026] Figures 6A to 6D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3 are respectively shown;

[0027] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0028] Figures 8A to 8D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4 are respectively shown;

[0029] Figure 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0030] Figures 10A to 10D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 5 are respectively shown;

[0031] Figure 11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0032] Figures 12A to 12D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 6 are respectively shown;

[0033] Figure 13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0034] Figures 14A to 14D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 7. Detailed implementation manners

[0035] To better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0037] In the drawings, for ease of illustration, the thickness, size, and shape of the lenses have been slightly exaggerated. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are for illustration only and are not drawn to an exact scale.

[0038] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0039] It should also be understood that the terms "comprises", "comprising", "has", "including" and / or "including having", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. Further, when an expression such as "at least one of..." appears after the list of listed features, it modifies the entire list of listed features, rather than modifying a single element in the list. Further, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0040] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0041] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the accompanying drawings and in combination with the embodiments.

[0042] The features, principles and other aspects of this application will be described in detail below.

[0043] The optical imaging lens according to an exemplary embodiment of this application may include eight lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens. These eight lenses are arranged in sequence from the object side to the image side along the optical axis. An air gap may be provided between each adjacent lens.

[0044] In the exemplary embodiment, the first lens may have positive or negative optical power, its object side is convex, and its image side is concave; the second lens may have positive optical power, its object side is convex, and its image side is convex; the third lens has negative optical power, and its image side is concave; the fourth lens has positive or negative optical power; the fifth lens has positive or negative optical power, and its image side is convex; the sixth lens has positive or negative optical power, and its image side is convex; the seventh lens may have positive optical power, its object side is convex, and its image side is concave; and the eighth lens may have negative optical power, its object side is convex, and its image side is concave. Reasonably matching the optical power and surface types of the lenses in the optical system can effectively balance the aberrations of the optical system and improve the imaging quality.

[0045] In the exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: f×TAN(FOV / 2)>4.0mm. For example, 4.0mm < f×TAN(FOV / 2) < 6.5mm. Reasonably setting the relationship between the total effective focal length of the optical imaging lens and the maximum field of view of the optical imaging lens is beneficial for the optical system to have a larger imaging surface.

[0046] In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: f / (CT7 + CT8) ≥ 5.0. For example, 5.0 ≤ f / (CT7 + CT8) ≤ 7.0. Reasonably setting the central thicknesses of the seventh lens and the eighth lens and the ratio relationship between the total effective focal length of the optical imaging lens and the sum of the central thicknesses of the seventh lens and the eighth lens is beneficial to balancing the optical power distribution of the optical imaging lens, so that the optical imaging lens has the characteristics of miniaturization and a relatively large imaging surface.

[0047] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the entrance pupil diameter EPD of the optical imaging lens satisfy: TTL / EPD ≤ 2.0. For example, 1.0 ≤ TTL / EPD ≤ 2.0. Reasonably setting the ratio relationship between the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the entrance pupil diameter of the optical imaging lens can effectively reduce the overall length of the optical system, which is beneficial to realizing the miniaturization of the optical system and facilitating the optical imaging lens to better adapt to more and more portable electronic products on the market. At the same time, increasing the entrance pupil diameter of the optical system can increase the light passing amount and relative illumination of the optical system, which is beneficial to improving the imaging quality of the optical system under low-light conditions.

[0048] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R2 of the image side surface of the first lens satisfy: f / R2 > 1.5. For example, 1.5 < f / R2 ≤ 2.0. Reasonably setting the ratio relationship between the total effective focal length of the optical imaging lens and the curvature radius of the image side surface of the first lens can effectively control the curvature radius of the image side surface of the first lens, which is beneficial to controlling the field curvature contribution of the first lens within a reasonable range to balance the field curvature generated by the rear group of lenses.

[0049] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: f / R10 < -0.5. For example, -2.0 < f / R10 < -0.5. Reasonably setting the ratio relationship between the total effective focal length of the optical imaging lens and the curvature radius of the image side surface of the fifth lens is beneficial to reducing the axial chromatic aberration of the optical system and improving the imaging quality of the optical system.

[0050] In an exemplary embodiment, the radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens satisfy: -10 < R4 / R3 < -3.0. For example, -7 < R4 / R3 < -3. Setting the ratio of the radius of curvature of the object side surface of the second lens to the radius of curvature of the image side surface of the second lens within a reasonable numerical range can effectively control the lens shape of the second lens, which is beneficial to reducing the contribution rate of the aberration of the second lens and balancing the aberration related to the aperture band in the optical system, thereby improving the imaging quality of the optical system.

[0051] In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object side surface of the seventh lens, and the radius of curvature R14 of the image side surface of the seventh lens satisfy: f / R13 + f / R14 > 3.5. For example, 3.5 < f / R13 + f / R14 < 6.0. Reasonably setting the mutual relationship among the total effective focal length of the optical imaging lens, the radius of curvature of the object side surface of the seventh lens, and the radius of curvature of the image side surface of the seventh lens can effectively control the radius of curvature of the object side surface and the image side surface of the seventh lens, which is beneficial to reducing the contribution rate of the third-order astigmatism of the seventh lens and controlling the generated third-order astigmatism within a reasonable range, enabling the lens to have high-performance at different distances.

[0052] In an exemplary embodiment, the radius of curvature R15 of the object side surface of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy: 1 < R15 / R16 < 2. Reasonably setting the proportional relationship between the radius of curvature of the object side surface of the eighth lens and the radius of curvature of the image side surface of the eighth lens can effectively control the lens shape of the eighth lens, which is beneficial to reducing the angle of the chief ray incident on the optical system, facilitating better matching with the chip, and reducing the optical distortion of the system.

[0053] In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f8 of the eighth lens satisfy: |f / f3 - f / f8| < 0.5. Reasonably setting the mutual relationship among the total effective focal length of the optical imaging lens, the effective focal length of the third lens, and the effective focal length of the eighth lens and effectively controlling the reasonable distribution of the optical power of the optical imaging lens can avoid the excessive concentration of optical power on the second lens and the seventh lens, which is not only beneficial to improving the imaging quality of the optical system and reducing the system sensitivity but also beneficial to realizing the miniaturization of the lens.

[0054] In an exemplary embodiment, the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy: -5.0 < f5 / f4 < 0. Reasonably setting the ratio relationship between the effective focal length of the fifth lens and the effective focal length of the fourth lens is beneficial to reducing the size of the optical system, realizing the miniaturization of the optical system, and is also beneficial to the reasonable distribution of the system optical power, avoiding the over-concentration of the optical power. At the same time, the fifth lens and the fourth lens cooperate with the first three lenses to better correct the aberrations of the optical system.

[0055] In an exemplary embodiment, the effective focal length f7 of the seventh lens and the combined focal length f12 of the first lens and the second lens satisfy: 1.5 < f7 / f12 < 5.0. Reasonably setting the ratio relationship between the effective focal length of the seventh lens and the combined focal length of the first lens and the second lens is beneficial to reducing the sensitivity of the front lens group, avoiding overly strict tolerance requirements, and is also beneficial to eliminating astigmatism, coma, etc. brought by the front lens group, thereby improving the imaging quality of the optical system and making it have better resolution.

[0056] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f / |f1| ≤ 0.3. Reasonably setting the ratio relationship between the total effective focal length of the optical imaging lens and the absolute value of the effective focal length of the first lens is beneficial to slowing down the deflection of light in the first lens, reducing the sensitivity of the first lens, and is also beneficial to reducing the spherical aberration generated by the first lens.

[0057] In an exemplary embodiment, the Abbe number V4 of the fourth lens, the Abbe number V5 of the fifth lens, and the Abbe number V6 of the sixth lens satisfy: 30 < (V4 + V5 + V6) / 3 < 40. Setting the average Abbe number of the above three lenses within a reasonable numerical range is beneficial to reducing the chromatic dispersion of the optical system.

[0058] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f / EPD ≤ 1.5. For example, 1.0 < f / EPD ≤ 1.5. Reasonably setting the ratio relationship between the total effective focal length of the optical imaging lens and the entrance pupil diameter of the optical imaging lens is beneficial to the optical system having a large image plane while having a small F-number and a large aperture, so as to achieve good imaging quality of the optical system in a dark environment.

[0059] In an exemplary embodiment, the above optical imaging lens may further include a diaphragm. The diaphragm can be set at an appropriate position as needed. For example, the diaphragm can be set between the object side and the first lens. Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0060] The optical imaging lens according to the above embodiments of the present application may employ multiple lenses, such as eight lenses as described above. By reasonably configuring each lens, the light converging ability of the lens can be improved, the resolving power and contrast of the lens can be enhanced, and the phenomenon of glare in the lens in a dark environment can be improved. For the large-aperture optical imaging lens in the present application, when shooting in a relatively dark environment, it is easy to obtain shooting effects with a small depth of field, background blurring, and a high shutter speed.

[0061] In an exemplary embodiment, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one lens surface from the object side surface of the first lens to the image side surface of the eighth lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature continuously changes from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical lens surface. Optionally, both the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens are aspherical lens surfaces.

[0062] The present application also provides an imaging device, and its electronic photosensitive element may be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS). The imaging device may be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0063] The exemplary embodiment of the present application also provides an electronic device, and the electronic device includes the imaging device described above.

[0064] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although the eight-lens example is described in the embodiment, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0065] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0066] Example 1

[0067] The following refers toFigures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 It is a schematic structural diagram showing the optical imaging lens according to Embodiment 1 of the present application.

[0068] As Figure 1 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0069] The first lens E1 has a negative focal power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a positive focal power, its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a negative focal power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a positive focal power, its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative focal power, its object surface S9 is concave, and its image surface S10 is convex. The sixth lens E6 has a positive focal power, its object surface S11 is convex, and its image surface S12 is convex. The seventh lens E7 has a positive focal power, its object surface S13 is convex, and its image surface S14 is concave. The eighth lens E8 has a negative focal power, its object surface S15 is convex, and its image surface S16 is concave. The filter E9 has an object surface S17 and an image surface S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0070] Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0071]

[0072] Table 1

[0073] In this embodiment, the total effective focal length f of the optical imaging lens is 5.47 mm, the distance TTL on the optical axis from the object surface S1 of the first lens E1 to the imaging surface S19 is 7.28 mm, and the maximum field of view FOV of the optical imaging lens is 77.6°.

[0074] In Embodiment 1, the object surface and the image surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0075]

[0076] Wherein, x is the sagitta, which is the distance from the vertex of the aspherical surface to the position along the optical axis at a height of h; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the higher-order coefficients A 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0077] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.0246E-02 -2.4977E-03 -2.4464E-03 3.9406E-03 -3.5543E-03 1.7719E-03 -4.8005E-04 6.7513E-05 -3.8961E-06 S2 -4.6466E-02 -1.6508E-02 8.4087E-04 9.0566E-03 -5.9915E-03 1.9716E-03 -3.8128E-04 4.2101E-05 -2.0794E-06 S3 -1.7542E-02 -1.3592E-02 -9.8924E-04 7.8563E-03 -3.3753E-03 4.0255E-04 6.3342E-05 -2.0310E-05 1.4402E-06 S4 1.4705E-02 -5.2619E-03 -1.1523E-02 1.5069E-02 -9.2367E-03 3.2832E-03 -6.8897E-04 7.9673E-05 -3.9444E-06 S5 -5.5062E-02 3.0799E-02 -4.1126E-02 3.9846E-02 -2.5657E-02 1.0539E-02 -2.6605E-03 3.8156E-04 -2.4154E-05 S6 -7.5889E-02 4.4674E-02 -4.5135E-02 4.0547E-02 -2.7859E-02 1.3106E-02 -3.9502E-03 6.8890E-04 -5.3126E-05 S7 -1.4028E-02 6.7594E-05 4.3718E-03 -1.3998E-02 1.7151E-02 -1.1783E-02 4.7369E-03 -1.0458E-03 9.7787E-05 S8 -1.9571E-02 -4.5538E-03 1.2664E-02 -2.2059E-02 2.0155E-02 -1.0906E-02 3.6259E-03 -6.8452E-04 5.5644E-05 S9 2.6723E-02 -5.8393E-03 -1.1082E-03 6.6956E-03 -6.9742E-03 3.9625E-03 -1.2336E-03 1.9607E-04 -1.2493E-05 S10 7.1194E-03 1.4022E-03 2.5078E-03 -1.8493E-03 8.0432E-04 -2.8666E-04 8.0320E-05 -1.2750E-05 7.9530E-07 S11 5.2175E-03 -7.9540E-04 -1.2714E-04 -2.4000E-04 8.5785E-05 -1.3709E-05 4.2305E-07 1.4671E-07 -9.9254E-09 S12 5.7061E-20 -1.4959E-27 -1.7030E-33 1.0161E-39 -3.2244E-46 6.0316E-53 -6.7718E-60 4.1905E-67 -1.1155E-74 S13 7.7939E-03 -1.3517E-02 2.6977E-03 -5.1965E-04 -2.8291E-05 7.0539E-05 -1.9279E-05 2.1547E-06 -8.8896E-08 S14 1.7346E-02 -1.1523E-02 -3.2441E-04 1.1702E-03 -3.6060E-04 5.8113E-05 -5.5195E-06 2.9329E-07 -6.7208E-09 S15 -6.3528E-02 4.2239E-03 4.1777E-03 -1.5394E-03 2.6963E-04 -2.7585E-05 1.6736E-06 -5.5855E-08 7.9101E-10 S16 -5.8748E-02 1.4103E-02 -2.5931E-03 2.7812E-04 -8.0935E-06 -1.3523E-06 1.5558E-07 -6.5516E-09 1.0358E-10

[0078] Table 2

[0079] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 2B shows the astigmatism curve of the optical imaging lens of Example 1, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C shows the distortion curve of the optical imaging lens of Example 1, which represents the distortion magnitude values corresponding to different image heights. Figure 2D shows the longitudinal chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 2A to 2D it can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0080] Example 2

[0081] The following will refer to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0082] As Figure 3 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0083] The first lens E1 has a negative focal power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive focal power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has a negative focal power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive focal power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a negative focal power, its object side S9 is concave, and its image side S10 is convex. The sixth lens E6 has a negative focal power, its object side S11 is concave, and its image side S12 is convex. The seventh lens E7 has a positive focal power, its object side S13 is convex, and its image side S14 is concave. The eighth lens E8 has a negative focal power, its object side S15 is convex, and its image side S16 is concave. The filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0084] In this embodiment, the total effective focal length f of the optical imaging lens is 5.47 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S19 is 7.28 mm, and the maximum field of view FOV of the optical imaging lens is 77.8°.

[0085] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0086]

[0087] Table 3

[0088] In Embodiment 2, the object side and the image side of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 4 below gives the higher-order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 for the aspherical mirror surfaces S1 - S16 in Embodiment 2.

[0089]

[0090]

[0091] Table 4

[0092] Figure 4AShows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 4B Shows the astigmatism curve of the optical imaging lens of Embodiment 2, which represents the curvature of the meridional image plane and the sagittal image plane. Figure 4C Shows the distortion curve of the optical imaging lens of Embodiment 2, which represents the distortion magnitude values corresponding to different image heights. Figure 4D Shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 4A to 4D It can be seen that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0093] Example 3

[0094] The following refers to Figures 5 to 6D Describe the optical imaging lens according to Embodiment 3 of the present application. Figure 5 Shows a schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application.

[0095] As Figure 5 Shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0096] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative optical power, its object side surface S5 is a concave surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a concave surface, and its image side surface S10 is a convex surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a concave surface, and its image side surface S12 is a convex surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The eighth lens E8 has a negative optical power, its object side surface S15 is a convex surface, and its image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through each surface S1 to S18 and finally forms an image on the imaging surface S19.

[0097] In this embodiment, the total effective focal length f of the optical imaging lens is 5.47 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19 is 7.28 mm, and the maximum field of view FOV of the optical imaging lens is 77.7°.

[0098] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0099]

[0100]

[0101] Table 5

[0102] In Embodiment 3, the object side and the image side of any one of the first lens E1 to the eighth lens E8 are both aspherical surfaces. The following Table 6 gives the high-order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 for the aspherical mirror surfaces S1 - S16 in Embodiment 3.

[0103] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.9089E-02 -8.6510E-04 -7.1061E-03 8.8318E-03 -6.8434E-03 3.0771E-03 -7.7689E-04 1.0382E-04 -5.7681E-06 S2 -4.0420E-02 -1.3523E-02 6.1440E-03 -9.8506E-03 9.9765E-03 -4.6516E-03 1.1287E-03 -1.3961E-04 6.9558E-06 S3 -1.7301E-02 -1.4230E-02 1.7521E-02 -2.6767E-02 2.3422E-02 -1.0538E-02 2.5524E-03 -3.1934E-04 1.6208E-05 S4 -1.5013E-02 4.2543E-02 -6.8837E-02 6.3721E-02 -3.5036E-02 1.1496E-02 -2.2019E-03 2.2632E-04 -9.6091E-06 S5 1.9602E-03 3.0161E-02 -6.9442E-02 7.2065E-02 -4.1594E-02 1.3611E-02 -2.3816E-03 1.8128E-04 -1.9236E-06 S6 2.1392E-02 -3.0257E-02 -1.0392E-03 2.4160E-02 -2.0108E-02 8.0082E-03 -1.6573E-03 1.5215E-04 -2.7785E-06 S7 -3.9084E-02 -8.7321E-03 -3.3757E-03 1.1234E-02 -4.6398E-03 -7.9368E-04 1.1244E-03 -3.2332E-04 3.1953E-05 S8 -5.4283E-02 2.3930E-02 -2.5426E-02 1.7116E-02 -4.3740E-03 -1.3533E-03 1.2165E-03 -3.1083E-04 2.8500E-05 S9 -3.0525E-02 2.3985E-02 -3.3432E-02 3.4716E-02 -2.5523E-02 1.2830E-02 -4.1823E-03 7.8533E-04 -6.3407E-05 S10 -7.1786E-02 5.8072E-02 -4.2814E-02 1.7263E-02 -1.5999E-03 -1.3516E-03 5.4648E-04 -8.1382E-05 4.4677E-06 S11 3.0847E-03 7.4330E-02 -1.0361E-01 7.6309E-02 -3.4434E-02 1.0062E-02 -1.8591E-03 1.9634E-04 -9.0007E-06 S12 -6.6151E-03 4.3776E-02 -5.4597E-02 3.9451E-02 -1.7586E-02 4.9731E-03 -8.5673E-04 8.1279E-05 -3.2438E-06 S13 1.2885E-02 -1.3214E-02 3.7097E-03 -1.2862E-03 3.8273E-04 -7.3188E-05 8.0686E-06 -4.5633E-07 1.0038E-08 S14 3.1582E-02 -1.7158E-02 1.8150E-03 5.0360E-04 -2.1318E-04 3.5922E-05 -3.3267E-06 1.6522E-07 -3.4278E-09 S15 -8.9553E-02 2.0911E-02 -3.5972E-03 6.4045E-04 -9.5468E-05 9.5963E-06 -5.9711E-07 2.0964E-08 -3.1990E-10 S16 -7.9598E-02 2.7547E-02 -8.0284E-03 1.7265E-03 -2.5758E-04 2.5478E-05 -1.5713E-06 5.4208E-08 -7.9478E-10

[0104] Table 6

[0105] Figure 6A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 6B shows the astigmatism curve of the optical imaging lens of Embodiment 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C shows the distortion curve of the optical imaging lens of Embodiment 3, which represents the distortion magnitude values corresponding to different image heights. Figure 6D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0106] Example 4

[0107] The following refers to Figures 7 to 8D to describe the optical imaging lens according to Embodiment 4 of the present application. Figure 7 shows the structural schematic diagram of the optical imaging lens according to Embodiment 4 of the present application.

[0108] As Figure 7As shown in the figure, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0109] The first lens E1 has a positive optical power. Its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a positive optical power. Its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has a negative optical power. Its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a positive optical power. Its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has a negative optical power. Its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has a positive optical power. Its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has a positive optical power. Its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has a negative optical power. Its object side surface S15 is convex, and its image side surface S16 is concave. The filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through each surface S1 to S18 and finally forms an image on the imaging surface S19.

[0110] In this embodiment, the total effective focal length f of the optical imaging lens is 5.72 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19 is 7.31 mm, and the maximum field of view FOV of the optical imaging lens is 83.8°.

[0111] Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0112]

[0113] Table 7

[0114] In Embodiment 4, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 8 below gives the higher-order term coefficients A 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0115]

[0116]

[0117] Table 8

[0118] Figure 8A shows the axial chromatic aberration curve of the optical imaging lens of Example 4, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 8B shows the astigmatism curve of the optical imaging lens of Example 4, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 8C shows the distortion curve of the optical imaging lens of Example 4, which represents the distortion magnitude values corresponding to different image heights. Figure 8D shows the lateral chromatic aberration curve of the optical imaging lens of Example 4, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 8A to 8D it can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0119] Example 5

[0120] The following refers to Figures 9 to 10D to describe the optical imaging lens according to Embodiment 5 of the present application. Figure 9 shows a schematic structural diagram of the optical imaging lens according to Embodiment 5 of the present application.

[0121] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0122] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a negative optical power, its object side surface S9 is a concave surface, and its image side surface S10 is a convex surface. The sixth lens E6 has a positive optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a convex surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The eighth lens E8 has a negative optical power, its object side surface S15 is a convex surface, and its image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0123] In this embodiment, the total effective focal length f of the optical imaging lens is 7.51 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S19 is 9.91 mm, and the maximum field of view angle FOV of the optical imaging lens is 78.0°.

[0124] Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0125]

[0126]

[0127] Table 9

[0128] In Embodiment 5, the object side and the image side of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 10 below gives the higher-order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0129] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.2577E-03 -1.6537E-04 -4.0081E-04 2.3527E-04 -9.0598E-05 2.0244E-05 -2.5224E-06 1.6551E-07 -4.5017E-09 S2 -1.4678E-02 -1.9287E-03 -2.2327E-04 3.4100E-04 -8.1106E-05 8.7516E-06 -3.9581E-07 -1.5630E-09 5.0675E-10 S3 -6.4090E-03 -1.8961E-03 2.4872E-05 9.0267E-05 4.0872E-05 -2.0787E-05 3.3849E-06 -2.4968E-07 7.1118E-09 S4 7.6248E-03 -3.3860E-03 2.0635E-04 2.6123E-04 -1.0335E-04 1.8278E-05 -1.7134E-06 8.1764E-08 -1.5651E-09 S5 -1.6833E-02 3.4172E-03 -2.6428E-03 1.4415E-03 -4.8116E-04 9.8222E-05 -1.2018E-05 8.2184E-07 -2.4578E-08 S6 -2.5163E-02 7.4406E-03 -3.6711E-03 1.5981E-03 -5.1572E-04 1.1241E-04 -1.5557E-05 1.2425E-06 -4.3775E-08 S7 -3.3792E-03 -3.1396E-03 2.7068E-03 -1.5652E-03 5.9104E-04 -1.4895E-04 2.3991E-05 -2.2566E-06 9.4485E-08 S8 -1.1789E-03 -5.7255E-03 3.0799E-03 -1.2534E-03 3.7688E-04 -7.8922E-05 1.0756E-05 -8.5818E-07 3.0376E-08 S9 2.7232E-02 -1.8396E-02 8.5094E-03 -2.5051E-03 4.8780E-04 -6.1972E-05 4.9343E-06 -2.2344E-07 4.3717E-09 S10 1.1717E-02 -9.4321E-03 4.5817E-03 -1.2942E-03 2.3445E-04 -2.7892E-05 2.1314E-06 -9.4782E-08 1.8485E-09 S11 3.4751E-03 -3.6386E-04 -2.3018E-04 8.2121E-05 -2.1463E-05 3.6892E-06 -3.7747E-07 2.0680E-08 -4.6234E-10 S12 -3.3194E-03 2.0361E-03 -6.2965E-04 9.6010E-05 -9.9261E-06 8.8653E-07 -6.2103E-08 2.6135E-09 -4.6673E-11 S13 1.5703E-03 -1.1704E-03 -9.7258E-05 5.0171E-06 3.1127E-06 -4.0910E-07 2.0423E-08 -4.1364E-10 1.8603E-12 S14 7.7123E-03 -2.0889E-03 -1.2808E-04 7.4575E-05 -1.0048E-05 7.1895E-07 -2.9777E-08 6.7284E-10 -6.4088E-12 S15 -3.5711E-02 4.1905E-03 -1.8024E-04 -4.8533E-06 1.0104E-06 -5.4691E-08 1.4710E-09 -1.8986E-11 8.2548E-14 S16 -2.3728E-02 3.6620E-03 -4.5892E-04 4.2923E-05 -3.0334E-06 1.5553E-07 -5.1862E-09 9.7226E-11 -7.6753E-13

[0130] Table 10

[0131] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Embodiment 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C shows the distortion curve of the optical imaging lens of Embodiment 5, which represents the distortion magnitude values corresponding to different image heights. Figure 10D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 10A to 10D It can be seen that the optical imaging lens given in Embodiment 5 can achieve good imaging quality.

[0132] Example 6

[0133] The following refers to Figures 11 to 12D to describe the optical imaging lens according to Embodiment 6 of the present application. Figure 11Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application.

[0134] As Figure 11 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0135] The first lens E1 has a negative optical power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a positive optical power, its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a negative optical power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a negative optical power, its object surface S7 is convex, and its image surface S8 is concave. The fifth lens E5 has a positive optical power, its object surface S9 is convex, and its image surface S10 is convex. The sixth lens E6 has a negative optical power, its object surface S11 is concave, and its image surface S12 is convex. The seventh lens E7 has a positive optical power, its object surface S13 is convex, and its image surface S14 is concave. The eighth lens E8 has a negative optical power, its object surface S15 is convex, and its image surface S16 is concave. The filter E9 has an object surface S17 and an image surface S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0136] In this embodiment, the total effective focal length f of the optical imaging lens is 5.47 mm, the distance TTL on the optical axis from the object surface S1 of the first lens E1 to the imaging surface S19 is 7.28 mm, and the maximum field of view FOV of the optical imaging lens is 77.7°.

[0137] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0138]

[0139] Table 11

[0140] In Embodiment 6, the object surface and the image surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 12 below gives the high-order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A20 .

[0141] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.1865E-02 -1.6569E-03 -3.7278E-03 5.2156E-03 -4.2560E-03 2.0127E-03 -5.2877E-04 7.2548E-05 -4.0920E-06 S2 -4.7607E-02 -1.3697E-02 -9.5229E-04 8.8253E-03 -5.2986E-03 1.6591E-03 -3.1220E-04 3.3812E-05 -1.6454E-06 S3 -1.7707E-02 -1.1656E-02 -1.2913E-03 5.6296E-03 -1.3743E-03 -3.4700E-04 2.0149E-04 -3.1043E-05 1.5131E-06 S4 1.2582E-02 -9.2804E-03 -6.0006E-03 1.1155E-02 -6.8997E-03 2.2600E-03 -4.0668E-04 3.6539E-05 -1.2043E-06 S5 -5.5014E-02 2.3593E-02 -3.4448E-02 3.5967E-02 -2.2642E-02 8.5360E-03 -1.8927E-03 2.2812E-04 -1.1556E-05 S6 -7.2926E-02 3.8088E-02 -3.8641E-02 3.3133E-02 -1.9644E-02 7.3245E-03 -1.6223E-03 1.9211E-04 -9.3506E-06 S7 6.3567E-03 -1.2596E-02 2.2557E-02 -2.8764E-02 2.3321E-02 -1.1872E-02 3.7602E-03 -6.7876E-04 5.2786E-05 S8 6.4582E-03 -2.0171E-02 3.3701E-02 -3.9337E-02 2.9445E-02 -1.4260E-02 4.3532E-03 -7.5704E-04 5.6701E-05 S9 -2.0019E-02 4.1079E-03 -7.3642E-03 1.1405E-02 -1.1669E-02 7.2111E-03 -2.7113E-03 5.6265E-04 -4.8251E-05 S10 -5.3620E-02 2.8368E-02 -1.7480E-02 1.1748E-02 -8.0064E-03 4.1216E-03 -1.3390E-03 2.3850E-04 -1.7420E-05 S11 1.2804E-02 2.5255E-02 -2.2726E-02 9.8694E-03 -2.7986E-03 8.1595E-04 -2.0814E-04 2.9784E-05 -1.6752E-06 S12 -1.5285E-02 4.0613E-02 -3.4436E-02 2.0304E-02 -8.6189E-03 2.5919E-03 -4.9404E-04 5.1810E-05 -2.2549E-06 S13 5.9420E-03 -2.9864E-03 -6.3777E-03 4.3943E-03 -1.6368E-03 3.8136E-04 -5.4299E-05 4.2710E-06 -1.4069E-07 S14 3.5521E-02 -2.5435E-02 6.3737E-03 -9.5780E-04 7.7644E-05 -1.2778E-07 -6.5238E-07 5.8610E-08 -1.7187E-09 S15 -6.9278E-02 8.7572E-03 3.0854E-04 -1.0698E-04 -4.4446E-06 2.4199E-06 -2.3767E-07 1.0380E-08 -1.7812E-10 S16 -5.9548E-02 1.5728E-02 -3.8627E-03 7.3657E-04 -9.9003E-05 9.1164E-06 -5.4478E-07 1.8800E-08 -2.8151E-10

[0142] Table 12

[0143] Figure 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 12B shows the astigmatism curve of the optical imaging lens of Embodiment 6, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C shows the distortion curve of the optical imaging lens of Embodiment 6, which represents the distortion magnitude values corresponding to different image heights. Figure 12D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 12A to 12D it can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0144] Example 7

[0145] The following refers to Figures 13 to 14D to describe the optical imaging lens according to Embodiment 7 of the present application. Figure 13 shows a schematic structural diagram of the optical imaging lens according to Embodiment 7 of the present application.

[0146] As Figure 13 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0147] The first lens E1 has a positive optical power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a positive optical power, its object side surface S3 is convex, and its image side surface S4 is convex. The third lens E3 has a negative optical power, its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a positive optical power, its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has a negative optical power, its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has a positive optical power, its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has a positive optical power, its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has a negative optical power, its object side surface S15 is convex, and its image side surface S16 is concave. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through each surface S1 to S18 and finally forms an image on the imaging surface S19.

[0148] In this embodiment, the total effective focal length f of the optical imaging lens is 6.37 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S17 is 8.20 mm, and the maximum field of view angle FOV of the optical imaging lens is 77.5°.

[0149] Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0150]

[0151] Table 13

[0152] In Embodiment 7, the object side and the image side of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 14 below gives the high-order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 for the aspherical mirror surfaces S1-S16 in Embodiment 7.

[0153] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.0577E-02 -5.9466E-04 -1.9603E-03 1.7982E-03 -1.0673E-03 3.6965E-04 -7.1537E-05 7.2797E-06 -3.0591E-07 S2 -2.9817E-02 -6.3798E-03 -2.8189E-04 2.3480E-03 -1.0184E-03 2.1209E-04 -2.3988E-05 1.3858E-06 -3.0951E-08 S3 -1.3875E-02 -5.2825E-03 -5.2917E-04 1.8517E-03 -3.6648E-04 -7.3692E-05 3.5679E-05 -4.7402E-06 2.1814E-07 S4 1.6151E-02 -1.2661E-02 3.1835E-03 8.2261E-04 -8.7756E-04 2.8204E-04 -4.5914E-05 3.8333E-06 -1.3246E-07 S5 -3.3715E-02 1.0415E-02 -1.2139E-02 1.0299E-02 -5.3205E-03 1.6644E-03 -3.0865E-04 3.1580E-05 -1.3930E-06 S6 -5.1269E-02 2.5198E-02 -1.9790E-02 1.3302E-02 -6.4963E-03 2.1207E-03 -4.3633E-04 5.1456E-05 -2.6610E-06 S7 -8.2667E-03 -4.6350E-03 6.8609E-03 -7.3832E-03 4.9955E-03 -2.1932E-03 5.9638E-04 -9.1985E-05 6.1618E-06 S8 -3.5869E-03 -1.4957E-02 1.4087E-02 -1.0056E-02 4.9832E-03 -1.6408E-03 3.4329E-04 -4.1545E-05 2.2191E-06 S9 4.6207E-02 -4.4161E-02 3.1195E-02 -1.4385E-02 4.4275E-03 -8.8134E-04 1.0821E-04 -7.4278E-06 2.1642E-07 S10 2.3145E-02 -2.5629E-02 1.8376E-02 -7.9339E-03 2.2598E-03 -4.3124E-04 5.3506E-05 -3.8794E-06 1.2313E-07 S11 6.0782E-03 -9.8176E-04 -9.9341E-04 5.3485E-04 -2.1461E-04 5.7694E-05 -9.3273E-06 8.1102E-07 -2.8763E-08 S12 -7.1508E-03 8.0259E-03 -4.3681E-03 1.2398E-03 -2.3409E-04 3.2776E-05 -3.2105E-06 1.8749E-07 -4.7736E-09 S13 3.1800E-03 -4.2907E-03 -9.9983E-05 -1.0038E-04 6.9943E-05 -1.2205E-05 9.5279E-07 -3.2995E-08 3.4433E-10 S14 1.3618E-02 -5.6307E-03 -8.2822E-04 5.9403E-04 -1.2081E-04 1.3249E-05 -8.4430E-07 2.9407E-08 -4.3245E-10 S15 -6.2633E-02 1.0618E-02 -5.4593E-04 -6.2787E-05 1.3243E-05 -1.0639E-06 4.5347E-08 -9.8575E-10 8.2651E-12 S16 -4.4806E-02 1.0219E-02 -1.8730E-03 2.5221E-04 -2.5269E-05 1.8548E-06 -9.0554E-08 2.5279E-09 -2.9986E-11

[0154] Table 14

[0155] Figure 14A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 14B shows the astigmatism curve of the optical imaging lens of Embodiment 7, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C shows the distortion curve of the optical imaging lens of Embodiment 7, which represents the distortion magnitude values corresponding to different image heights. Figure 14D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of different image heights on the imaging surface after light rays pass through the lens. According to Figures 14A to 14D it can be seen that the optical imaging lens given in Embodiment 7 can achieve good imaging quality.

[0156] In summary, Embodiments 1 to 7 respectively satisfy the relationships shown in Table 15.

[0157] Conditional / Example 1 2 3 4 5 6 7 f×TAN(HFOV)(mm) 4.39 4.41 4.40 5.13 6.08 4.41 5.11 f / (CT7 + CT8) 5.47 5.56 5.42 5.96 6.64 5.29 6.64 TTL / EPD 1.87 1.87 1.87 1.92 1.80 1.86 1.81 f / R2 1.91 2.00 1.95 1.69 1.66 1.95 1.72 f / R10 -1.89 -1.34 -0.65 -1.21 -1.58 -0.66 -1.69 R4 / R3 -4.10 -6.12 -3.18 -5.00 -4.58 -4.11 -4.66 f / R13 + f / R14 4.17 4.35 4.01 4.97 5.17 3.96 5.16 R15 / R16 1.58 1.73 1.50 1.84 1.75 1.57 1.79 |f / f3 - f / f8| 0.08 0.08 0.36 0.16 0.09 0.07 0.05 f5 / f4 -1.12 -4.38 -1.25 -0.95 -0.89 -0.01 -0.90 f7 / f12 4.61 2.10 1.88 2.37 2.75 2.08 3.40 f / |f1| 0.04 0.09 0.01 0.26 0.09 0.06 0.08 (V4 + V5 + V6) / 3 37.56 33.07 31.54 37.56 37.56 33.07 37.56 f / EPD 1.40 1.40 1.40 1.50 1.36 1.40 1.40

[0158] Table 15

[0159] The above description is only a preferred embodiment of the present application and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. An optical imaging lens, characterized in that, along the optical axis from the object side to the image side, it sequentially includes: a first lens with a focal power, whose object side is convex and image side is concave; a second lens with a positive focal power, whose object side is convex and image side is convex; a third lens with a negative focal power, whose image side is concave; a fourth lens with a focal power; a fifth lens with a focal power, whose image side is convex; a sixth lens with a focal power, whose image side is convex; a seventh lens with a positive focal power, whose object side is convex and image side is concave; and an eighth lens with a negative focal power, whose object side is convex and image side is concave; wherein, the number of lenses with focal power in the optical imaging lens is eight; the fourth lens has a positive focal power, the fifth lens has a negative focal power, and the sixth lens has a positive focal power; or the fourth lens has a negative focal power, the fifth lens has a positive focal power, and the sixth lens has a negative focal power; or the first lens has a negative focal power, the fourth lens has a positive focal power, the fifth lens has a negative focal power, and the sixth lens has a negative focal power; the total effective focal length f of the optical imaging lens and the maximum field of view angle FOV of the optical imaging lens satisfy: 4.39mm ≤ f × TAN(FOV / 2) ≤ 6.08mm; the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: 5.29 ≤ f / (CT7 + CT8) ≤ 6.64; the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side of the fifth lens satisfy: -1.89 ≤ f / R10 ≤ -0.

65.

2. The optical imaging lens according to claim 1, characterized in that, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and the entrance pupil diameter EPD of the optical imaging lens satisfy: 1.80 ≤ TTL / EPD ≤ 1.

92.

3. The optical imaging lens according to claim 1, characterized in that, the total effective focal length f of the optical imaging lens and the radius of curvature R2 of the image side of the first lens satisfy: 1.66 ≤ f / R2 ≤ 2.

00.

4. The optical imaging lens according to claim 1, characterized in that, the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens satisfy: -6.12 ≤ R4 / R3 ≤ -3.

18.

5. The optical imaging lens according to claim 1, characterized in that, the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object side of the seventh lens, and the radius of curvature R14 of the image side of the seventh lens satisfy: 3.96 ≤ f / R13 + f / R14 ≤ 5.

17.

6. The optical imaging lens according to claim 1, characterized in that, the radius of curvature R15 of the object side of the eighth lens and the radius of curvature R16 of the image side of the eighth lens satisfy: 1.50 ≤ R15 / R16 ≤ 1.84。 7. According to the optical imaging lens described in claim 1, wherein, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f8 of the eighth lens satisfy: 0.05 ≤ |f / f3 - f / f8| ≤ 0.

36.

8. According to the optical imaging lens described in claim 1, wherein, the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy: -4.38 ≤ f5 / f4 < 0.

9. According to the optical imaging lens described in claim 1, wherein, the effective focal length f7 of the seventh lens and the combined focal length f12 of the first lens and the second lens satisfy: 1.88 ≤ f7 / f12 ≤ 4.

61.

10. According to the optical imaging lens described in claim 1, wherein, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: 0.01 ≤ f / |f1| ≤ 0.

3.

11. According to the optical imaging lens described in claim 1, wherein, the Abbe number V4 of the fourth lens, the Abbe number V5 of the fifth lens, and the Abbe number V6 of the sixth lens satisfy: 31.54 ≤ (V4 + V5 + V6) / 3 ≤ 37.

56.

12. According to the optical imaging lens described in claim 1, wherein, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 1.36 ≤ f / EPD ≤ 1.5.

Images