Optical imaging lens

Abstract

The application discloses an optical imaging lens. The optical imaging lens comprises, in sequence from the object side to the image side along the optical axis, a first lens with optical power, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has positive optical power, and the object side surface of the first lens is convex. The second lens has positive optical power, and the image side surface of the second lens is convex. The image side surface of the fourth lens is convex. The fifth lens has negative optical power, the object side surface of the fifth lens is concave, and the image side surface of the fifth lens is concave. The image side surface of the sixth lens is concave. The effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy 1.5 < f / f1 < 3.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on May 14, 2018, entitled "Optical Imaging Lens" and with application number 201810454110.3. Technical Field

[0003] This application relates to an optical imaging lens, and more specifically, to an optical imaging lens comprising six lenses. Background Technology

[0004] Conventional imaging devices typically use CCD (Charge-Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor) sensors. Improvements in the performance and reduction in the size of CCD and CMOS sensors have provided favorable conditions for the development of optical imaging lenses. At the same time, the miniaturization trend in electronic devices equipped with imaging devices, such as smartphones, places higher demands on the miniaturization and image quality of optical imaging lenses used in camera devices.

[0005] In recent years, an increasing number of smartphones have begun to be equipped with dual-camera setups. In this configuration, a wide-angle lens and a telephoto lens work together to achieve zoom capabilities. Such a dual-camera setup can achieve ideal magnification and good image quality under autofocus. It is suitable for shooting both close-up and distant objects, and can capture more detail at the same shooting distance. This dual-camera setup provides users with different visual experiences while ensuring manufacturing efficiency and miniaturization. Therefore, a miniaturized telephoto lens with excellent image quality is needed. Summary of the Invention

[0006] This application provides an optical imaging lens with six lenses. The optical imaging lens includes, sequentially from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, each having optical power. In the optical imaging lens: the first lens has positive optical power; the second lens has positive optical power and its image-side surface is convex; the fifth lens has negative optical power, its object-side surface is concave, and its image-side surface is concave; and the sixth lens has a concave image-side surface. Furthermore, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4 <f2 / f1<8。

[0007] According to an embodiment of this application, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5 <f / f1<3。

[0008] According to an embodiment of this application, the effective focal length f5 of the fifth lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: -1.5 <f5 / R12<0。

[0009] According to an embodiment of this application, the half-diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: ImgH / f<0.5.

[0010] According to an embodiment of this application, the radius of curvature R10 of the image-side surface of the fifth lens and the radius of curvature R9 of the object-side surface of the fifth lens satisfy: -1.5 <R10 / R9<0。

[0011] According to an embodiment of this application, the air gap T56 between the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy: 0.5 <T56 / CT6<2。

[0012] According to an embodiment of this application, the center thickness CT3 of the third lens and the air gap T34 between the third lens and the fourth lens on the optical axis of the imaging lens satisfy: 0.5 <CT3 / T34<1。

[0013] According to an embodiment of this application, the radius of curvature R8 of the image-side surface of the fourth lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 0 <R8 / R4<0.5。

[0014] According to an embodiment of this application, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object-side surface of the first lens satisfy: 3 <f / R1<4。

[0015] According to an embodiment of this application, the combined focal length f12 of the first lens and the second lens satisfies the following condition with respect to the effective focal length f of the optical imaging lens: 0 <f12 / f<0.5。

[0016] According to an embodiment of this application, the radius of curvature R12 of the image side surface of the sixth lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy: 0 < (R12 - R10) / (R12 + R10) < 1.

[0017] This application provides an optical imaging lens with six lenses. The optical imaging lens includes, sequentially from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, each having optical power. In the optical imaging lens: the first lens has positive optical power and its object-side surface is convex; the second lens has positive optical power and its image-side surface is convex; the fourth lens has a convex image-side surface; the fifth lens has negative optical power, its object-side surface is concave, and its image-side surface is concave; and the sixth lens has a concave image-side surface. Furthermore, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5 <f / f1<3。

[0018] This application employs a six-element lens. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the aforementioned optical imaging lens achieves at least one beneficial effect, such as thinness, miniaturization, long focal length, and high imaging quality. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0021] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 1 are shown respectively.

[0022] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0023] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 2 are shown respectively.

[0024] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0025] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 3 are shown respectively.

[0026] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0027] Figures 8A to 8DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 4 are shown respectively.

[0028] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0029] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 5 are shown respectively.

[0030] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0031] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 6 are shown respectively.

[0032] Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown;

[0033] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 7 are shown respectively.

[0034] Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown; and

[0035] Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 8 are shown respectively. Detailed Implementation

[0036] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this 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.

[0037] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0038] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0039] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

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

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

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

[0043] An optical imaging lens according to an exemplary embodiment of this application may include, for example, six lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged sequentially along the optical axis from the object side to the image side.

[0044] In an exemplary embodiment, the image-side surface of the second lens is convex; the object-side surface of the fifth lens is concave and the image-side surface is concave; and the image-side surface of the sixth lens is concave.

[0045] In an exemplary embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4 < f2 / f1 < 8, and more specifically, 4.73 ≤ f2 / f1 ≤ 7.37. By reasonably allocating the effective focal lengths of the second lens and the first lens, the volume of the optical imaging lens can be effectively controlled and the performance can be improved, enabling the optical imaging lens to have a better ability to balance aberrations.

[0046] In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5 < f / f1 < 3, and more specifically, 1.83 ≤ f / f1 ≤ 2.11. By reasonably setting the effective focal length of the first lens, it helps the optical imaging lens to achieve the characteristics of a long focal length. In addition, it can also ensure the light converging ability, adjust the light focusing position, and shorten the total length of the optical imaging lens.

[0047] In an exemplary embodiment, the effective focal length f5 of the fifth lens and the curvature radius R12 of the image side of the sixth lens satisfy: -1.5 < f5 / R12 < 0, and more specifically, -1.12 ≤ f5 / R12 ≤ -0.21. By reasonably selecting the ratio between the effective focal length of the fifth lens and the curvature radius of the image side of the sixth lens, when the optical power of the fifth lens is negative, it ensures that the curvature radius of the image side of the sixth lens is positive, that is, the image side is concave, which can effectively balance the astigmatism of the optical imaging lens and further ensure the miniaturization of the optical imaging lens.

[0048] In an exemplary embodiment, the semi-diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: ImgH / f < 0.5, and more specifically, ImgH / f ≤ 0.44. By reasonably controlling the ratio between the semi-diagonal length of the effective pixel region on the imaging surface and the effective focal length of the optical imaging lens, it can ensure that the optical imaging lens meets the characteristics of a long focal length.

[0049] In one embodiment, the curvature radius R10 of the image side of the fifth lens and the curvature radius R9 of the object side of the fifth lens satisfy: -1.5 < R10 / R9 < 0, and more specifically, -1.25 ≤ R10 / R9 ≤ -0.07. By reasonably controlling the curvature radii of the image side and the object side of the fifth lens, when the image side of the fifth lens is concave, it ensures that its object side is also concave. This enables the optical imaging lens to have a better ability to balance chromatic aberration and distortion.

[0050] In one embodiment, the air gap T56 between the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the central thickness CT6 of the sixth lens satisfy: 0.5 < T56 / CT6 < 2, and more specifically, 0.72 ≤ T56 / CT6 ≤ 1.67. By reasonably allocating the ratio between the air gap between the fifth lens and the sixth lens on the optical axis and the central thickness of the sixth lens, the size of the optical imaging lens can be effectively reduced and the characteristics of a long focal length can be satisfied. At the same time, it is beneficial to adjust the structure of the optical imaging lens and reduce the difficulty of lens processing and assembly.

[0051] In one embodiment, the central thickness CT3 of the third lens and the air gap T34 between the third lens and the fourth lens on the optical axis of the optical imaging lens satisfy: 0.5 < CT3 / T34 < 1, and more specifically, 0.54 ≤ CT3 / T34 ≤ 0.82. By reasonably controlling the ratio between the central thickness of the third lens and the air gap between the third lens and the fourth lens on the optical axis, there is sufficient space between the lenses, so that the degree of freedom of the lens surface changes more, thereby improving the ability of the optical imaging lens to correct astigmatism and field curvature.

[0052] In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R4 of the image side of the second lens satisfy: 0 < R8 / R4 < 0.5, and more specifically, 0.03 ≤ R8 / R4 ≤ 0.49. By reasonably allocating the radius of curvature of the image side of the fourth lens and the radius of curvature of the image side of the second lens, when the image side of the second lens is a convex surface, it is ensured that the image side of the fourth lens is also a convex surface. In this case, the astigmatism of the optical imaging lens can be effectively balanced, and the miniaturization of the optical imaging lens can be further ensured.

[0053] In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side of the first lens satisfy: 3 < f / R1 < 4, and more specifically, 3.52 ≤ f / R1 ≤ 3.8. By reasonably controlling the radius of curvature of the object side of the first lens, the astigmatism of the optical imaging lens can be effectively balanced, the main ray deflection angle can be reasonably controlled, and the miniaturization of the optical imaging lens can be further ensured.

[0054] In one embodiment, the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens satisfy: 0 < f12 / f < 0.5, and more specifically, 0.42 ≤ f12 / f ≤ 0.49. By reasonably controlling the combined focal length of the first lens and the second lens, the characteristics of a long focal length can be achieved while correcting aberrations. In addition, in this case, it is also helpful to appropriately shorten the total length of the optical imaging lens and meet the requirements of being thin and light.

[0055] In one embodiment, the radius of curvature R12 of the image-side surface of the sixth lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0 < (R12 - R10) / (R12 + R10) < 1, more specifically, 0.21 ≤ (R12 - R10) / (R12 + R10) ≤ 0.66. By reasonably allocating the radii of curvature of the image-side surfaces of the sixth and fifth lenses, the optical imaging lens can be better matched to the principal ray angle of the chip.

[0056] In an exemplary embodiment, the optical imaging lens may further include at least one aperture stop to improve the image quality of the lens. For example, the aperture stop may be located at the first lens.

[0057] Optionally, the aforementioned optical imaging lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0058] The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the six lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the size of the lens can be effectively reduced, the sensitivity of the lens can be decreased, and the manufacturability of the lens can be improved, making the optical imaging lens more conducive to manufacturing and suitable for portable electronic products. Furthermore, the optical imaging lens configured as described above also has beneficial effects such as thinness, miniaturization, long focal length, and high image quality.

[0059] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0060] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0061] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0062] Example 1

[0063] The following is for reference Figures 1 to 2D Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0064] like Figure 1 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0065] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0066] Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 1, wherein the units for radius of curvature and thickness are millimeters (mm).

[0067]

[0068]

[0069] Table 1

[0070] As shown in Table 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0071]

[0072] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient (given in Table 1); Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A16, A26, A36 that can be used for each aspherical mirror S1-S16 in Example 1.10 A 12 A 14 A 16 A 18 and A 20 As can be seen, in this embodiment, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0073] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.2810E-03 2.7840E-03 3.4850E-03 -5.1400E-03 5.8440E-03 -3.3600E-03 5.9400E-04 0.0000E+00 0.0000E+00 S2 7.0610E-03 9.7564E-02 -1.6166E-01 1.5082E-01 -1.0594E-01 5.3240E-02 -1.2270E-02 0.0000E+00 0.0000E+00 S3 -6.6300E-03 1.5312E-01 -2.2949E-01 1.7969E-01 -1.0490E-01 5.5076E-02 -1.5330E-02 0.0000E+00 0.0000E+00 S4 -2.7520E-02 2.6710E-01 -4.7785E-01 4.1961E-01 -1.7440E-01 1.5724E-02 7.0930E-03 0.0000E+00 0.0000E+00 S5 -1.2273E-01 4.8560E-01 -1.0199E+00 1.3394E+00 -1.0554E+00 4.6183E-01 -8.4300E-02 0.0000E+00 0.0000E+00 S6 4.5245E-02 2.1528E-02 -1.2526E-01 1.2150E-01 6.8721E-02 -1.1386E-01 1.4022E-02 0.0000E+00 0.0000E+00 S7 -1.2771E-01 -9.0390E-02 6.0028E-02 6.7472E-01 -7.1627E+00 2.2923E+01 -3.6888E+01 3.1985E+01 -1.2380E+01 S8 -6.0414E-01 3.0745E+00 -1.2887E+01 4.1993E+01 -1.0383E+02 1.7598E+02 -1.8738E+02 1.1259E+02 -2.9414E+01 S9 -4.5887E-01 1.8229E+00 -4.5802E+00 6.7481E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -2.9516E-01 7.6933E-01 -1.5559E+00 1.9333E+00 -1.3794E+00 5.0577E-01 -7.0540E-02 0.0000E+00 0.0000E+00 S11 -8.5120E-02 5.7322E-02 -4.5840E-02 3.3990E-02 -1.8630E-02 6.7610E-03 -1.4900E-03 1.7300E-04 -7.7532E-06 S12 -9.5580E-02 6.2063E-02 -4.7020E-02 2.6762E-02 -1.0430E-02 2.6600E-03 -4.2000E-04 3.8300E-05 -1.5041E-06

[0074] Table 2

[0075] Table 3 gives the effective focal lengths f1 to f6 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens (i.e., the distance from the center of the object side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis), and the horizontal field of view HFOV of the optical imaging lens.

[0076] f1(mm) 2.63 f(mm) 5.55 f2 (mm) 16.67 TTL(mm) 5.40 f3 (mm) -3.02 HFOV (°) 23.3 f4 (mm) 4.99 f5 (mm) -3.82 f6 (mm) -14.46

[0077] Table 3

[0078] In Example 1, the optical imaging lens has the following parameter configuration.

[0079] The effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: f2 / f1 = 6.34.

[0080] The effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: f / f1=2.11.

[0081] The effective focal length f5 of the fifth lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy: f5 / R12=-0.59.

[0082] The half-diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens satisfies the following condition: ImgH / f=0.44.

[0083] The radius of curvature R10 of the image side of the fifth lens and the radius of curvature R9 of the object side of the fifth lens satisfy: R10 / R9=-0.89.

[0084] The air gap T56 between the fifth and sixth lenses on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy: T56 / CT6=1.14.

[0085] The center thickness CT3 of the third lens and the air gap T34 between the third and fourth lenses on the optical axis of the imaging lens satisfy: CT3 / T34 = 0.57.

[0086] The radius of curvature R8 of the image-side surface of the fourth lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: R8 / R4=0.35.

[0087] The effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy: f / R1=3.65.

[0088] The combined focal length f12 of the first and second lenses satisfies the effective focal length f of the optical imaging lens: f12 / f = 0.43.

[0089] The radius of curvature R12 of the image side of the sixth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: (R12-R10) / (R12+R10)=0.24.

[0090] in addition, Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude under different viewing angles. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes 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.

[0091] Example 2

[0092] The following is for reference Figures 3 to 4D This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0093] like Figure 3 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0094] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0095] Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 2, wherein the units for radius of curvature and thickness are millimeters (mm).

[0096]

[0097] Table 4

[0098] Table 5 shows the higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0099] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.4210E-03 6.1180E-03 -4.6400E-03 -7.8400E-03 2.5208E-02 -2.1333E-02 5.4900E-03 0.0000E+00 0.0000E+00 S2 1.0317E-02 1.1059E-01 -3.2659E-01 5.9819E-01 -6.2474E-01 3.2521E-01 -6.3810E-02 0.0000E+00 0.0000E+00 S3 -2.6500E-03 2.3548E-01 -6.1632E-01 1.0764E+00 -1.2085E+00 7.1996E-01 -1.6851E-01 0.0000E+00 0.0000E+00 S4 -1.6413E-01 9.7355E-01 -2.2783E+00 2.7087E+00 -1.7659E+00 6.1490E-01 -9.0450E-02 0.0000E+00 0.0000E+00 S5 -1.9086E-01 1.2348E+00 -3.4268E+00 5.0226E+00 -4.0903E+00 1.7673E+00 -3.1400E-01 0.0000E+00 0.0000E+00 S6 2.6518E-02 4.4260E-01 -1.8140E+00 3.4150E+00 -3.4681E+00 1.7954E+00 -3.5773E-01 0.0000E+00 0.0000E+00 S7 -3.9327E-01 1.9827E+00 -8.8914E+00 2.9129E+01 -6.8819E+01 1.1370E+02 -1.2502E+02 8.2162E+01 -2.4319E+01 S8 -4.9691E-01 3.5492E+00 -1.5192E+01 4.6594E+01 -1.0422E+02 1.6109E+02 -1.5851E+02 8.8303E+01 -2.1236E+01 S9 -4.9963E-01 1.7883E+00 -4.5639E+00 6.8019E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -2.6016E-01 7.7663E-01 -1.5672E+00 1.9250E+00 -1.3809E+00 5.0817E-01 -7.0140E-02 0.0000E+00 0.0000E+00 S11 -1.6419E-01 2.7357E-01 -2.6418E-01 1.7710E-01 -8.2240E-02 2.5444E-02 -4.9400E-03 5.3500E-04 -2.4433E-05 S12 -1.7883E-01 2.2715E-01 -1.8801E-01 1.0848E-01 -4.2935E-02 1.1214E-02 -1.8300E-03 1.6800E-04 -6.6325E-06

[0100] Table 5

[0101] Table 6 shows the effective focal lengths f1 to f6 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0102]

[0103]

[0104] Table 6

[0105] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Embodiment 2 is shown, which represents the distortion magnitude under different viewing angles. Figure 4DThe magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0106] Example 3

[0107] The following is for reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0108] like Figure 5 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0109] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0110] Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 3, wherein the units for radius of curvature and thickness are millimeters (mm).

[0111]

[0112] Table 7

[0113] Table 8 shows the higher-order coefficients that can be used for each aspherical mirror in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0114] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.0068E-02 1.6743E-03 7.1830E-03 -1.1120E-02 1.2563E-02 -6.7495E-03 1.1450E-03 0.0000E+00 0.0000E+00 S2 1.6732E-02 4.2634E-02 -2.3410E-02 5.9860E-03 -6.9230E-02 8.3848E-02 -2.7000E-02 0.0000E+00 0.0000E+00 S3 5.1620E-03 7.6119E-02 -6.5400E-03 -1.0098E-01 1.1352E-02 8.8485E-02 -4.1270E-02 0.0000E+00 0.0000E+00 S4 -3.3030E-02 2.4192E-01 -2.6960E-01 -1.7155E-01 6.0308E-01 -4.6295E-01 1.1871E-01 0.0000E+00 0.0000E+00 S5 -1.5688E-01 6.7216E-01 -1.4747E+00 1.9813E+00 -1.5606E+00 6.5541E-01 -1.1048E-01 0.0000E+00 0.0000E+00 S6 -2.3900E-02 2.4728E-01 -6.6946E-01 1.0580E+00 -8.4509E-01 2.1114E-01 3.8916E-02 0.0000E+00 0.0000E+00 S7 -2.1378E-01 -2.3443E-01 2.4018E+00 -1.2255E+01 3.7205E+01 -7.1445E+01 8.6480E+01 -6.2321E+01 2.0657E+01 S8 -4.2858E-01 1.6076E+00 -5.4951E+00 1.6159E+01 -3.7734E+01 6.0704E+01 -5.9062E+01 3.0573E+01 -6.4984E+00 S9 -5.4884E-01 1.8329E+00 -4.5248E+00 6.8142E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -3.1177E-01 7.5634E-01 -1.5563E+00 1.9409E+00 -1.3726E+00 5.0084E-01 -7.2120E-02 0.0000E+00 0.0000E+00 S11 -9.0620E-02 8.2700E-02 -7.5287E-02 5.5783E-02 -3.1805E-02 1.3291E-02 -3.6400E-03 5.6000E-04 -3.6000E-05 S12 -9.9950E-02 6.7425E-02 -4.7319E-02 2.3512E-02 -7.5190E-03 1.3800E-03 -1.0000E-04 -5.4000E-06 9.4900E-07

[0115] Table 8

[0116] Table 9 shows the effective focal lengths f1 to f6 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0117]

[0118]

[0119] Table 9

[0120] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude under different viewing angles. Figure 6D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 6A to 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0121] Example 4

[0122] The following is for reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0123] like Figure 7 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0125] Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 4, wherein the units for radius of curvature and thickness are millimeters (mm).

[0126]

[0127] Table 10

[0128] Table 11 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0129] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.9030E-03 5.3458E-04 6.3330E-03 -8.9600E-03 9.9470E-03 -5.8800E-03 1.2370E-03 0.0000E+00 0.0000E+00 S2 4.9516E-02 -9.8684E-02 2.3092E-01 -2.9715E-01 1.9545E-01 -5.8610E-02 5.9680E-03 0.0000E+00 0.0000E+00 S3 5.7802E-02 -1.4130E-01 4.0511E-01 -6.0251E-01 4.5272E-01 -1.5798E-01 1.9041E-02 0.0000E+00 0.0000E+00 S4 -2.9000E-04 1.0920E-01 -1.0730E-02 -3.8714E-01 6.0441E-01 -3.7577E-01 8.6774E-02 0.0000E+00 0.0000E+00 S5 -1.5033E-01 6.2068E-01 -1.2900E+00 1.6178E+00 -1.1874E+00 4.7065E-01 -7.6130E-02 0.0000E+00 0.0000E+00 S6 2.4321E-02 1.3052E-01 -2.8742E-01 -3.5410E-02 9.7438E-01 -1.2927E+00 5.1995E-01 0.0000E+00 0.0000E+00 S7 -1.8394E-01 -6.0678E-02 1.0818E+00 -8.6156E+00 3.6264E+01 -9.8046E+01 1.6465E+02 -1.5319E+02 5.9273E+01 S8 -5.1829E-01 2.5529E+00 -9.6853E+00 2.8837E+01 -6.5372E+01 1.0157E+02 -9.6091E+01 4.8468E+01 -9.8916E+00 S9 -4.8261E-01 1.8221E+00 -4.5443E+00 6.8448E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -3.4950E-01 7.7841E-01 -1.5547E+00 1.9284E+00 -1.3775E+00 5.0594E-01 -7.0540E-02 0.0000E+00 0.0000E+00 S11 -6.1180E-02 3.0886E-02 -2.1148E-02 1.2465E-02 -6.4100E-03 2.5690E-03 -6.6000E-04 9.0000E-05 -4.9000E-06 S12 -6.5730E-02 2.1370E-02 -6.2685E-03 -3.2500E-03 4.2870E-03 -2.0100E-03 5.0000E-04 -6.5000E-05 3.5200E-06

[0130] Table 11

[0131] Table 12 shows the effective focal lengths f1 to f6 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0132] f1(mm) 2.69 f(mm) 5.57 f2 (mm) 13.26 TTL(mm) 5.40 f3 (mm) -2.89 HFOV (°) 23.2 f4 (mm) 5.07 f5 (mm) -3.31 f6 (mm) 1000.00

[0133] Table 12

[0134] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude under different viewing angles. Figure 8D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes 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.

[0135] Example 5

[0136] The following is for reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0137] like Figure 9 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0138] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0139] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, wherein the units of radius of curvature and thickness are millimeters (mm).

[0140]

[0141] Table 13

[0142] Table 14 shows the higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0143] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.4020E-03 4.5930E-03 -4.0700E-03 1.1269E-02 -1.0960E-02 5.0780E-03 -1.0400E-03 0.0000E+00 0.0000E+00 S2 3.0138E-02 -1.3210E-02 7.9125E-02 -1.6093E-01 1.3906E-01 -5.3710E-02 7.7500E-03 0.0000E+00 0.0000E+00 S3 3.0481E-02 -4.5800E-03 9.0247E-02 -2.1026E-01 1.8495E-01 -6.4990E-02 5.9730E-03 0.0000E+00 0.0000E+00 S4 1.5883E-02 7.0283E-02 -1.8060E-02 -2.2898E-01 3.6710E-01 -2.3129E-01 5.4131E-02 0.0000E+00 0.0000E+00 S5 -1.3124E-01 4.9071E-01 -9.4414E-01 1.1617E+00 -8.6950E-01 3.6673E-01 -6.5220E-02 0.0000E+00 0.0000E+00 S6 3.1729E-02 2.9554E-02 8.3222E-02 -5.6586E-01 1.0726E+00 -7.6077E-01 1.1882E-01 0.0000E+00 0.0000E+00 S7 -1.7580E-01 -1.1020E-02 -5.5784E-01 4.2532E+00 -1.8459E+01 4.4278E+01 -5.9664E+01 4.3040E+01 -1.3643E+01 S8 -5.6606E-01 2.5643E+00 -9.6640E+00 2.9235E+01 -6.8797E+01 1.1360E+02 -1.1830E+02 6.9473E+01 -1.7913E+01 S9 -4.7506E-01 1.8300E+00 -4.5424E+00 6.8664E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -3.5303E-01 7.9306E-01 -1.5417E+00 1.9232E+00 -1.3840E+00 5.1417E-01 -7.0540E-02 0.0000E+00 0.0000E+00 S11 -7.6710E-02 4.4980E-02 -4.6220E-02 4.1067E-02 -2.4770E-02 9.1530E-03 -1.7800E-03 1.2900E-04 2.6878E-06 S12 -8.5600E-02 5.4387E-02 -5.2700E-02 3.6411E-02 -1.6790E-02 5.0490E-03 -9.5000E-04 1.0200E-04 -4.7390E-06

[0144] Table 14

[0145] Table 15 gives the effective focal lengths f1 to f6 of each lens in Example 5, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0146] f1(mm) 2.71 f(mm) 5.57 f2 (mm) 12.96 TTL(mm) 5.40 f3 (mm) -2.84 HFOV (°) 23.2 f4 (mm) 4.49 f5 (mm) -3.74 f6 (mm) -16.25

[0147] Table 15

[0148] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude under different viewing angles. Figure 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 10A to 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0149] Example 6

[0150] The following is for reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0151] like Figure 11 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0152] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0153] Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, wherein the units of radius of curvature and thickness are millimeters (mm).

[0154]

[0155] Table 16

[0156] Table 17 shows the higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0157] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.5170E-03 2.4970E-03 1.0400E-03 1.7660E-03 -3.4100E-03 2.9552E-03 -1.0000E-03 0.0000E+00 0.0000E+00 S2 6.9630E-03 7.1614E-02 -8.5870E-02 6.2573E-02 -3.8500E-02 1.5290E-02 -2.4000E-03 0.0000E+00 0.0000E+00 S3 8.6900E-06 1.1616E-01 -1.0917E-01 4.6733E-02 -9.6500E-03 -1.0381E-02 6.1660E-03 0.0000E+00 0.0000E+00 S4 -1.1227E-01 5.8447E-01 -1.1463E+00 1.4456E+00 -1.2660E+00 6.5000E-01 -1.3812E-01 0.0000E+00 0.0000E+00 S5 -2.9325E-01 1.0570E+00 -2.1654E+00 2.8973E+00 -2.4491E+00 1.1917E+00 -2.4787E-01 0.0000E+00 0.0000E+00 S6 9.7610E-02 -2.3543E-01 9.6504E-01 -2.4586E+00 3.6054E+00 -2.4975E+00 5.6466E-01 0.0000E+00 0.0000E+00 S7 -1.6161E-01 9.8494E-02 -5.7884E-01 3.8635E+00 -1.9243E+01 5.2257E+01 -7.9940E+01 6.6204E+01 -2.4027E+01 S8 -5.0805E-01 2.6385E+00 -9.3890E+00 2.5516E+01 -5.2565E+01 7.4058E+01 -6.2478E+01 2.6692E+01 -4.1291E+00 S9 -4.7860E-01 1.8278E+00 -4.5319E+00 6.8793E+00 -7.3023E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -3.6085E-01 7.8315E-01 -1.5386E+00 1.9369E+00 -1.3714E+00 5.0136E-01 -7.0340E-02 0.0000E+00 0.0000E+00 S11 -7.8447E-02 3.9654E-02 -4.8300E-02 5.7734E-02 -4.9848E-02 2.8420E-02 -9.6500E-03 1.7470E-03 -1.2931E-04 S12 -7.9571E-02 4.1483E-02 -3.4960E-02 2.0414E-02 -7.5556E-03 1.6900E-03 -2.0000E-04 9.1400E-06 1.5671E-07

[0158] Table 17

[0159] Table 18 gives the effective focal lengths f1 to f6 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0160] f1(mm) 2.77 f(mm) 5.55 f2 (mm) 20.40 TTL(mm) 5.40 f3 (mm) -3.27 HFOV (°) 23.3 f4 (mm) 5.48 f5 (mm) -4.12 f6 (mm) -17.93

[0161] Table 18

[0162] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude under different viewing angles. Figure 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0163] Example 7

[0164] The following is for reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of this application is described. Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.

[0165] like Figure 13As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0166] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0167] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 7, wherein the units of radius of curvature and thickness are millimeters (mm).

[0168]

[0169] Table 19

[0170] Table 20 shows the higher-order coefficients that can be used for each aspherical mirror in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0171] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.8490E-03 2.2114E-03 3.4960E-03 -2.5000E-03 1.6370E-03 -4.1205E-04 -1.5000E-04 0.0000E+00 0.0000E+00 S2 1.5913E-02 3.5966E-02 -1.5700E-03 -7.8550E-02 9.0043E-02 -4.0524E-02 7.0860E-03 0.0000E+00 0.0000E+00 S3 1.4764E-02 5.7351E-02 9.9870E-03 -1.8913E-01 2.3101E-01 -1.1331E-01 2.0884E-02 0.0000E+00 0.0000E+00 S4 4.2380E-03 1.6013E-01 -2.4970E-01 6.3346E-02 1.8155E-01 -1.8196E-01 5.3092E-02 0.0000E+00 0.0000E+00 S5 -1.5504E-01 6.0759E-01 -1.2679E+00 1.6870E+00 -1.3515E+00 5.9098E-01 -1.0589E-01 0.0000E+00 0.0000E+00 S6 2.7292E-02 5.7506E-02 2.3107E-02 -5.7637E-01 1.4480E+00 -1.4440E+00 4.9921E-01 0.0000E+00 0.0000E+00 S7 -1.9657E-01 1.8117E-02 -1.7507E-02 -1.0249E+00 5.1272E+00 -1.5946E+01 2.9832E+01 -2.8770E+01 1.0559E+01 S8 -5.3493E-01 2.4655E+00 -9.5027E+00 2.9109E+01 -6.8544E+01 1.1122E+02 -1.1218E+02 6.3040E+01 -1.5407E+01 S9 -4.6613E-01 1.8345E+00 -4.5547E+00 6.8118E+00 -7.3016E+00 6.1585E+00 -2.8038E+00 0.0000E+00 0.0000E+00 S10 -3.2052E-01 7.7603E-01 -1.5485E+00 1.9306E+00 -1.3820E+00 5.0855E-01 -7.0540E-02 0.0000E+00 0.0000E+00 S11 -7.6329E-02 3.9407E-02 -2.1809E-02 5.5040E-03 3.6474E-03 -4.1000E-03 1.7120E-03 -3.4000E-04 2.7300E-05 S12 -8.9034E-02 5.5610E-02 -4.7137E-02 3.0105E-02 -1.3465E-02 4.0570E-03 -7.8000E-04 8.6700E-05 -4.2000E-06

[0172] Table 20

[0173] Table 21 gives the effective focal lengths f1 to f6 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0174] f1(mm) 2.66 f(mm) 5.57 f2 (mm) 15.07 TTL(mm) 5.40 f3 (mm) -2.66 HFOV (°) 23.2 f4 (mm) 4.16 f5 (mm) -3.77 f6 (mm) -16.45

[0175] Table 21

[0176] Figure 14A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14BThe astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the optical imaging lens of Embodiment 7 is shown, which represents the distortion magnitude under different viewing angles. Figure 14D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 14A to 14D It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0177] Example 8

[0178] The following is for reference Figures 15 to 16D An optical imaging lens according to Embodiment 8 of this application is described. Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown.

[0179] like Figure 15 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging surface S15.

[0180] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0181] Table 15 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, wherein the units of radius of curvature and thickness are millimeters (mm).

[0182]

[0183] Table 22

[0184] Table 23 shows the higher-order coefficients that can be used for each aspherical mirror in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above. In this example, the first lens E1 to the sixth lens E6 are aspherical mirrors.

[0185]

[0186]

[0187] Table 23

[0188] Table 24 gives the effective focal lengths f1 to f6 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field of view HFOV of the optical imaging lens.

[0189] f1(mm) 2.69 f(mm) 5.57 f2 (mm) 13.85 TTL(mm) 5.40 f3 (mm) -2.82 HFOV (°) 23.2 f4 (mm) 4.35 f5 (mm) -3.67 f6 (mm) -15.90

[0190] Table 24

[0191] Figure 16A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Embodiment 8 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude under different viewing angles. Figure 16D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 16A to 16D It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0192] In summary, Examples 1 to 8 satisfy the relationships shown in Table 25.

[0193] Conditional / Example 1 2 3 4 5 6 7 8 f2 / f1 6.34 5.90 4.73 4.93 4.78 7.37 5.66 5.15 f / f1 2.11 1.83 2.05 2.07 2.05 2.01 2.09 2.07 f5 / R12 -0.59 -1.12 -0.77 -0.21 -0.27 -0.29 -0.46 -0.35 ImgH / f 0.44 0.44 0.44 0.44 0.44 0.44 0.44 0.44 R10 / R9 -0.89 -0.07 -0.37 -0.81 -1.25 -0.74 -1.05 -1.19 T56 / CT6 1.14 1.67 0.72 0.94 1.12 0.90 1.26 1.15 CT3 / T34 0.57 0.82 0.54 0.59 0.67 0.63 0.67 0.65 R8 / R4 0.35 0.32 0.49 0.35 0.33 0.03 0.41 0.33 f / R1 3.65 3.52 3.80 3.78 3.76 3.76 3.69 3.73 f12 / f 0.43 0.49 0.42 0.42 0.42 0.45 0.43 0.42 (R12-R10) / (R12+R10) 0.24 0.21 0.27 0.66 0.50 0.57 0.32 0.41

[0194] Table 25

[0195] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0196] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, wherein the optical imaging lens comprises, sequentially from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, characterized in that: The first lens has positive optical power and the object side of the first lens is convex. The second lens has positive optical power and the image-side surface of the second lens is convex. The image-side surface of the fourth lens is convex. The fifth lens has negative optical power, the object-side surface of the fifth lens is concave, and the image-side surface of the fifth lens is concave; and The image-side surface of the sixth lens is concave. The optical imaging lens contains six lenses with optical power. The effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.83 ≤ f / f1 ≤ 2.11, and The effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4.73≤f2 / f1≤7.

37.

2. The optical imaging lens according to claim 1, characterized in that, The effective focal length f5 of the fifth lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy the following condition: -1.12≤f5 / R12≤-0.

21.

3. The optical imaging lens according to claim 1, characterized in that, The half-diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies ImgH / f=0.44 with the effective focal length f of the optical imaging lens.

4. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R10 of the image side of the fifth lens and the radius of curvature R9 of the object side of the fifth lens satisfy: -1.25≤R10 / R9≤-0.

07.

5. The optical imaging lens according to claim 1, characterized in that, The air gap T56 between the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy the following condition: 0.72≤T56 / CT6≤1.

67.

6. The optical imaging lens according to claim 1, characterized in that, The center thickness CT3 of the third lens and the air gap T34 between the third lens and the fourth lens on the optical axis of the optical imaging lens satisfy: 0.5 <CT3 / T34≤0.82。 7. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R8 of the image-side surface of the fourth lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 0 <R8 / R4<0.5。 8. The optical imaging lens according to claim 1, characterized in that, The effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy the following condition: 3.52≤f / R1≤3.

80.

9. The optical imaging lens according to claim 1, characterized in that, The combined focal length f12 of the first lens and the second lens satisfies the condition that 0.42 ≤ f12 / f < 0.5 with the effective focal length f of the optical imaging lens.

10. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R12 of the image side surface of the sixth lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy the following condition: 0.21≤(R12-R10) / (R12+R10)≤0.66.

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