Optical imaging lens

Abstract

The utility model discloses an optical imaging lens, the optical imaging lens comprises a lens barrel, and a lens group and a separator group which are arranged in the lens barrel, and the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in sequence from an object side to an image side along an optical axis; the separator group comprises a sixth separator which is arranged between the sixth lens and the seventh lens and is at least partially contacted with the image side surface of the sixth lens; the lens barrel comprises an object side end facing the object side and an image side end facing the image side; the periphery of the first lens at least partially abuts against the inner wall of the object side end of the lens barrel. The maximum thickness CP6 of the sixth separator along the optical axis direction and the air interval T67 of the sixth lens and the seventh lens on the optical axis satisfy: 0.8 lt; cP6 / T67lt; 1.5 parts; the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the outer diameter D6m of the image side surface of the sixth isolation piece and the outer diameter D6s of the object side surface of the sixth isolation piece meet the following conditions:-14lt; (f7-f6) / (D6m-D6s) lt; and-10.

Description

Technical Field

[0001] This application relates to the field of optical elements, and more particularly, to an optical imaging lens. Background Art

[0002] With the continuous development of the VR / AR / XR industries, various new consumer electronic products have emerged on the market. As an important medium for information acquisition, optical lenses are mainly applied to scenarios such as photography, image recognition, spatial positioning, and information calculation. With the continuous iteration and function upgrade of terminal products, the requirements for the main performance of lenses, such as resolution level, size miniaturization, reliability, and stability, are gradually increasing. Among various new consumer electronic products, a smart screen is a type of intelligent hardware electronic device and an innovative evolution form of a smart TV. Compared with traditional TVs, smart screens have more powerful functions and can control home appliances through voice commands. The camera mounted on the smart screen supports video calls, gesture commands, etc.

[0003] More specifically, for the lens used in a smart screen, under the condition of meeting an ultra-wide angle, stray light is likely to be generated at the end of the lens, that is, the last lens. If not processed in time, a large amount of stray light directly enters the imaging surface, which will greatly reduce the imaging quality of the camera lens. Therefore, how to control the spatial arrangement and optical parameters of the lenses and spacers of the wide-angle lens of the smart screen, reduce stray light interference, and improve imaging quality is one of the problems亟待 to be solved. Summary of the Utility Model

[0004] The first aspect of this application provides such an optical imaging lens, which includes: a lens barrel, and a lens group and a spacer group disposed in the lens barrel. Among them, the lens group includes, in order from the object side to the image side along the optical axis: a first lens with a negative optical power; a second lens with a negative optical power; a third lens with a positive optical power; a fourth lens with a positive optical power; a fifth lens with a negative optical power; a sixth lens with a positive optical power; and a seventh lens with a negative optical power. The spacer group includes a sixth spacer disposed between the sixth lens and the seventh lens and at least partially in contact with the image side surface of the sixth lens. The lens barrel includes an object side end facing the object side and an image side end facing the image side. At least a part of the outer periphery of the first lens abuts against the inner wall of the object side end of the lens barrel. The maximum thickness CP6 of the sixth spacer in the optical axis direction and the air gap T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.8 < CP6 / T67 < 1.5. The effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the outer diameter D6m of the image side surface of the sixth spacer, and the outer diameter D6s of the object side surface of the sixth spacer satisfy: -14 < (f7 - f6) / (D6m - D6s) < -10.

[0005] In one embodiment, the spacer group includes: a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; the optical imaging lens satisfies 1 < (D2s - d2s) / (f2 + f3) < 2.2, where D2s is the outer diameter of the object side surface of the second spacer, d2s is the inner diameter of the object side surface of the second spacer, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.

[0006] In one embodiment, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens, and a fourth auxiliary spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth spacer; the optical imaging lens satisfies 1 < (CP4 + CP4b) / T45 < 1.5, where CP4 is the maximum thickness of the fourth spacer along the optical axis direction, CP4b is the maximum thickness of the fourth auxiliary spacer along the optical axis direction, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis.

[0007] In one embodiment, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens; the optical imaging lens satisfies 0.1 < d4s / f4 + d4m / f5 < 0.8, where d4s is the inner diameter of the object side surface of the fourth spacer, d4m is the inner diameter of the image side surface of the fourth spacer, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens.

[0008] In one embodiment, the spacer group includes: a fifth spacer disposed between the fifth lens and the sixth lens and at least partially in contact with the image side surface of the fifth lens; the optical imaging lens satisfies 1 < DT61 / (D5m - d5m) < 5, where DT61 is the maximum clear aperture diameter of the object side surface of the sixth lens, D5m is the outer diameter of the image side surface of the fifth spacer, and d5m is the inner diameter of the image side surface of the fifth spacer.

[0009] In one embodiment, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens, and a fourth auxiliary spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth spacer; the optical imaging lens satisfies -0.2 < d4bs / (R8 + R9) < 0.5, where d4bs is the inner diameter of the object side surface of the fourth auxiliary spacer, R8 is the radius of curvature of the image side surface of the fourth lens, and R9 is the radius of curvature of the object side surface of the fifth lens.

[0010] In one embodiment, the spacer group includes: a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth lens, and a sixth auxiliary spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth spacer; the optical imaging lens satisfies: 0.5 < (D6bm - d6bm) / DT71 < 1, where D6bm is the outer diameter of the image side surface of the sixth auxiliary spacer, d6bm is the inner diameter of the image side surface of the sixth auxiliary spacer, and DT71 is the maximum clear aperture diameter of the object side surface of the seventh lens.

[0011] In one embodiment, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially contacting the image side surface of the fourth lens, a fifth spacer disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens, and a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth lens; the optical imaging lens satisfies: -0.5 < EP45 / f5 - EP56 / f6 < 0, where EP45 is the distance along the optical axis from the image side surface of the fourth spacer to the object side surface of the fifth spacer, EP56 is the distance along the optical axis from the image side surface of the fifth spacer to the object side surface of the sixth spacer, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens.

[0012] In one embodiment, the spacer group includes: a fifth spacer disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens, and a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth lens; the optical imaging lens satisfies: 0.5 < CP5 / T56 + CP6 / T67 < 2.5, where CP5 is the maximum thickness of the fifth spacer along the optical axis, CP6 is the maximum thickness of the sixth spacer along the optical axis, T56 is the air gap between the fifth lens and the sixth lens on the optical axis, and T67 is the air gap between the sixth lens and the seventh lens on the optical axis.

[0013] In one embodiment, the optical imaging lens satisfies: 2.3 < D0s / DT11 + D0m / DT72 < 2.6, where D0s is the outer diameter of the object side end face of the lens barrel, D0m is the outer diameter of the image side end face of the lens barrel, DT11 is the maximum clear aperture diameter of the object side surface of the first lens, and DT72 is the maximum clear aperture diameter of the image side surface of the seventh lens.

[0014] In one embodiment, the spacer group includes: a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth lens; the optical imaging lens satisfies: -0.5 < CP6 / (SAG62 + SAG71) < 0, where CP6 is the maximum thickness of the sixth spacer along the optical axis direction, SAG62 is the axial distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens, and SAG71 is the axial distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens.

[0015] In one embodiment, external threads are provided at both the object side end and the image side end of the lens barrel; and the optical imaging lens further includes an auxiliary lens barrel disposed on the object side of the lens barrel and including a first inner wall provided with internal threads.

[0016] In one embodiment, the lens barrel and the auxiliary lens barrel are threadedly connected through the external threads at the object side end of the lens barrel and the internal threads of the first inner wall of the auxiliary lens barrel.

[0017] In one embodiment, the auxiliary lens barrel further includes a second inner wall that at least partially contacts the object side surface of the first lens, and the angle between the first inner wall and the second inner wall is an obtuse angle.

[0018] In one embodiment, the materials of the first lens and the third lens are glass.

[0019] In one embodiment, the lens barrel includes a protruding structure located on the inner wall of the lens barrel and protruding towards the optical axis. The protruding structure includes a first surface facing the object side and a second surface facing the image side; the first surface of the protruding structure at least partially contacts the image side surface of the third lens, and the second surface of the protruding structure at least partially contacts the object side surface of the fourth lens.

[0020] In one embodiment, the first lens, the second lens, and the third lens are assembled into the lens barrel through the object side end of the lens barrel, and the fourth lens, the fifth lens, the sixth lens, and the seventh lens are assembled into the lens barrel through the image side end of the lens barrel.

[0021] In one embodiment, the lens barrel includes a recessed structure located on the outer wall of the lens barrel and recessed towards the optical axis. The recessed structure is closer to the image side end of the lens barrel than the protruding structure; the lens barrel further includes at least two reinforcing rib structures provided at the recessed structure.

[0022] The second aspect of the present application provides an optical imaging lens, which includes: a lens barrel, and a lens group and an isolator group disposed within the lens barrel. Among them, the lens group sequentially includes, from the object side to the image side along the optical axis: a first lens with a negative optical power; a second lens with a negative optical power; a third lens with a positive optical power; a fourth lens with a positive optical power; a fifth lens with a negative optical power; a sixth lens with a positive optical power; and a seventh lens with a negative optical power. The isolator group includes: a fourth isolator disposed between the fourth lens and the fifth lens and at least partially contacting the image side surface of the fourth lens, a fifth isolator disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens, and a sixth isolator disposed between the sixth lens and the seventh lens and at least partially contacting the image side surface of the sixth lens. The lens barrel includes an object side end facing the object side and an image side end facing the image side. At least a part of the outer periphery of the first lens abuts against the inner wall of the object side end of the lens barrel. The optical imaging lens satisfies: -0.5 < EP45 / f5 - EP56 / f6 < 0, where EP45 is the distance along the optical axis from the image side surface of the fourth isolator to the object side surface of the fifth isolator, EP56 is the distance along the optical axis from the image side surface of the fifth isolator to the object side surface of the sixth isolator, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens.

[0023] The present application provides a seven-piece optical imaging lens. By reasonably setting the optical powers of the respective lenses, the refraction directions of the imaging light rays passing through each lens are ensured, thereby ensuring that the image height positions of the final respective fields of view meet the requirements, and indirectly ensuring the optical imaging quality at the same time. At the same time, the optical imaging lens of the present application also satisfies 0.8 < CP6 / T67 < 1.5 and -14 < (f7 - f6) / (D6m - D6s) < -10. Since stray light is likely to be generated at the tail end of the lens, that is, the last lens, the present application provides a sixth isolator between the sixth lens and the seventh lens at the tail end, and reasonably controls the relationship between the outer diameters of the object side surface and the image side surface of the sixth isolator and the optical powers of the sixth lens and the seventh lens, which can achieve the effect of eliminating the stray light at the tail of the lens, enabling the imaging light rays to be effectively controlled at the rear end of the optical system and improving the imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more apparent:

[0025] Figure 1 shows a structural layout diagram of an optical imaging lens according to the present application and a schematic diagram of some parameters;

[0026] Figure 2A shows a structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present application;

[0027] Figure 2B A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0028] Figure 2C A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0029] Figure 3A and Figure 3B The axial chromatic aberration curve and the astigmatism curve of the optical imaging lens according to Embodiment 1 to Embodiment 3 of the present application are respectively shown;

[0030] Figure 4A A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0031] Figure 4B A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0032] Figure 4C A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0033] Figure 5A and Figure 5B The axial chromatic aberration curve and the astigmatism curve of the optical imaging lens according to Embodiment 4 to Embodiment 6 of the present application are respectively shown;

[0034] Fig. 6A A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0035] Figure 6B A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0036] Figure 6C A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown;

[0037] Fig. 7A and Figure 7B axial chromatic aberration curves and astigmatism curves of the optical imaging lenses according to Embodiments 7 to 9 of the present application are respectively shown; and

[0038] Fig. 8A A simulation diagram of stray light spots at the seventh lens when the optical imaging lens according to the present application satisfies CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-20 is shown;

[0039] Figure 8B A simulation diagram of stray light spots at the seventh lens when the optical imaging lens according to the present application satisfies CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-13.06 is shown;

[0040] Fig.9A A simulation diagram of stray light spots at the seventh lens when the optical imaging lens according to the present application satisfies CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-10.94 is shown;

[0041] Fig. 9B A simulation diagram of stray light spots at the seventh lens when the optical imaging lens according to the present application satisfies CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-5 is shown;

[0042] Fig. 10A A schematic structural diagram of a lens barrel of an optical imaging lens according to the present application is shown;

[0043] Fig. 10B A schematic structural diagram of an auxiliary lens barrel of an optical imaging lens according to the present application is shown; and

[0044] Fig. 10C A schematic diagram of the three-dimensional structure of the lens barrel of the optical imaging lens according to the present application is shown. DETAILED DESCRIPTION

[0045] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0046] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0047] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0048] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object is called the object side of the lens, and the surface of each lens close to the imaging plane is called the image side of the lens.

[0049] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0050] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The following embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. For example, the lens groups, lens barrels and spacers in the various embodiments of the present application can be combined arbitrarily, and are not limited to the lens groups in one embodiment being only combined with the lens barrels, spacers, etc. of the embodiment.

[0052] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Figure 1 The structure arrangement diagram of an optical imaging lens according to the present application and a schematic diagram of some parameters are shown. It should be understood by those skilled in the art that some parameters of lenses commonly used in the art (such as the center thickness CT1 of the first lens on the optical axis) are not shown in the figure. Figure 1 It is shown in Figure 1 Only some parameters of the lens barrel and the spacer of an optical imaging lens of the present application are shown as examples to facilitate a better understanding of the present invention. Figure 1As shown, CP4 is the maximum thickness of the fourth isolator along the optical axis, CP4b is the maximum thickness of the fourth auxiliary isolator along the optical axis, CP5 is the maximum thickness of the fifth isolator along the optical axis, CP6 is the maximum thickness of the sixth isolator along the optical axis, EP45 is the distance from the image side of the fourth isolator to the object side of the fifth isolator along the optical axis, EP56 is the distance from the image side of the fifth isolator to the object side of the sixth isolator along the optical axis, D0s is the outer diameter of the object side end face of the lens barrel, D0m is the outer diameter of the image side end face of the lens barrel, d4bs is the distance from the image side of the lens barrel to the object side of the lens barrel, and d4b is the distance from the image side of the lens barrel to the object side of the lens barrel. The inner diameter of the object side surface of the four auxiliary isolation pieces, d4m is the inner diameter of the image side surface of the fourth isolation piece, d4s is the inner diameter of the object side surface of the fourth isolation piece, D2s is the outer diameter of the object side surface of the second isolation piece, d2s is the inner diameter of the object side surface of the second isolation piece, d5m is the inner diameter of the image side surface of the fifth isolation piece, D5m is the outer diameter of the image side surface of the fifth isolation piece, D6m is the outer diameter of the image side surface of the sixth isolation piece, D6s is the outer diameter of the object side surface of the sixth isolation piece, D6bm is the outer diameter of the image side surface of the sixth auxiliary isolation piece, and d6bm is the inner diameter of the image side surface of the sixth auxiliary isolation piece.

[0053] The optical imaging lens according to the exemplary embodiment of the present application includes a lens barrel, a lens group and a spacer group arranged in the lens barrel. The lens group includes, from the object side to the image side along the optical axis, a first lens with negative optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with positive optical power; a fifth lens with negative optical power; a sixth lens with positive optical power; and a seventh lens with negative optical power; the spacer group includes at least one spacer arranged between two adjacent lenses.

[0054] In an exemplary embodiment, the lens barrel includes an object-side end facing the object side and an image-side end facing the image side. The outer periphery of the first lens at least partially bears against an inner wall of the object-side end of the lens barrel.

[0055] In an exemplary embodiment, the spacer group of the optical imaging lens may include at least one of a first spacer, a second spacer, a third spacer, a fourth spacer, a fifth spacer and a sixth spacer. The first spacer is placed between the first lens and the second lens and is in at least partial contact with the image side surface of the first lens. The second spacer is placed between the second lens and the third lens and is in at least partial contact with the image side surface of the second lens. The third spacer is placed between the third lens and the fourth lens and is in at least partial contact with the image side surface of the third lens. The fourth spacer is placed between the fourth lens and the fifth lens and is in at least partial contact with the image side surface of the fourth lens. The fifth spacer is placed between the fifth lens and the sixth lens and is in at least partial contact with the image side surface of the fifth lens. The sixth spacer is placed between the sixth lens and the seventh lens and is in at least partial contact with the image side surface of the sixth lens.

[0056] In an exemplary embodiment, the spacer group of the optical imaging lens may further include at least one auxiliary spacer. For example, a fourth auxiliary spacer is disposed between the fourth lens and the fifth lens and at least partially contacts the image side surface of the fourth spacer. A fifth auxiliary spacer is disposed between the fifth lens and the sixth lens and at least partially contacts the image side surface of the fifth spacer. A sixth auxiliary spacer is disposed between the sixth lens and the seventh lens and at least partially contacts the image side surface of the sixth spacer.

[0057] It should be understood that the present application does not specifically limit the number of spacers. Any number of spacers may be included between any two lenses, and any number of spacers may also be included in the entire optical imaging lens. The spacers help the optical imaging lens intercept redundant refracted and reflected light paths, reducing the generation of stray light and ghost images. Adding an auxiliary support between the spacers and the lens barrel is beneficial to improving problems such as poor assembly stability and low performance yield caused by a large step difference between the lenses.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy 0.8 < CP6 / T67 < 1.5, where CP6 is the maximum thickness of the sixth spacer along the optical axis direction, and T67 is the air gap between the sixth lens and the seventh lens on the optical axis.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy -14 < (f7 - f6) / (D6m - D6s) < -10, where f6 is the effective focal length of the sixth lens, f7 is the effective focal length of the seventh lens, D6m is the outer diameter of the image side surface of the sixth spacer, and D6s is the outer diameter of the object side surface of the sixth spacer. Satisfying -14 < (f7 - f6) / (D6m - D6s) < -10 and reasonably controlling the relationship between the outer diameters of the object side surface and the image side surface of the sixth spacer and the optical powers of the sixth lens and the seventh lens can achieve the effect of eliminating stray light at the tail of the lens, enabling the imaging light to be effectively controlled at the rear end of the optical system and improving the imaging quality.

[0060] An optical imaging lens according to an exemplary embodiment of the present application includes a lens barrel, a lens group, and an isolation member group disposed within the lens barrel. The lens group includes, in order from the object side to the image side along the optical axis: a first lens with a negative optical power; a second lens with a negative optical power; a third lens with a positive optical power; a fourth lens with a positive optical power; a fifth lens with a negative optical power; a sixth lens with a positive optical power; and a seventh lens with a negative optical power. The isolation member group includes a sixth isolation member disposed between the sixth lens and the seventh lens and at least partially in contact with the image side surface of the sixth lens. The lens barrel includes an object side end facing the object side and an image side end facing the image side. At least a part of the outer periphery of the first lens abuts against the inner wall of the object side end of the lens barrel. The maximum thickness CP6 of the sixth isolation member in the optical axis direction and the air gap T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.8 < CP6 / T67 < 1.5. The effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the outer diameter D6m of the image side surface of the sixth isolation member, and the outer diameter D6s of the object side surface of the sixth isolation member satisfy: -14 < (f7 - f6) / (D6m - D6s) < -10. The 7-piece optical imaging lens provided by the present application ensures the refraction direction of imaging light rays passing through each lens by reasonably setting the optical power of each lens, thereby ensuring that the image height positions of each final field of view meet the requirements, and indirectly ensuring the optical imaging quality. When 0.8 < CP6 / T67 < 1.5, stray light is likely to be generated at the tail end of the lens, that is, at the last lens. At this time, a sixth isolation member is disposed between the sixth lens and the seventh lens at the tail end, and the relationship between the outer diameters of the object side surface and the image side surface of the sixth isolation member and the optical powers of the sixth lens and the seventh lens is reasonably controlled, which can eliminate the stray light at the tail of the lens, effectively control the imaging light rays at the rear end of the optical system, and improve the imaging quality.

[0061] When the present application satisfies the conditional expressions 0.8 < CP6 / T67 < 1.5 and -14 < (f7 - f6) / (D6m - D6s) < -10, it can eliminate the stray light at the tail of the lens, effectively control the imaging light rays at the rear end of the optical system, and improve the imaging quality. The following further illustrates the effect of the above technical solution of the present application on improving stray light in conjunction with FIG. 8A to FIG. 9B , and further explains the effect of the above technical solution of the present application on improving stray light.

[0062] Exemplarily, Fig. 8A shows a simulation diagram of the stray light spot at the seventh lens when an optical imaging lens according to the present application satisfies CP6 / T67 = 1.18 and (f7 - f6) / (D6m - D6s) = -20. Figure 8B shows a simulation diagram of the stray light spot at the seventh lens when an optical imaging lens according to the present application satisfies CP6 / T67 = 1.18 and (f7 - f6) / (D6m - D6s) = -13.06. Fig.9AA simulation diagram of stray light spots at the seventh lens of an optical imaging lens according to the present application is shown when CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-10.94 are satisfied. Fig. 9B The figure shows a simulation diagram of stray light spots at the seventh lens of an optical imaging lens according to the present application when CP6 / T67=1.18 and (f7-f6) / (D6m-D6s)=-5. FIG. 8A to FIG. 9B By comparison, it can be found that under the same condition of CP6 / T67=1.18, when the value of (f7-f6) / (D6m-D6s) is within the range of this application, the stray light spot is less and the energy is weaker (such as Figure 8B and Fig.9A As shown), when the value of (f7-f6) / (D6m-D6s) is not within the scope of this application, the stray light spot has a wide distribution range and strong energy (such as Fig. 8A and Fig. 9B shown).

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1<(D2s-d2s) / (f2+f3)<2.2, wherein D2s is the outer diameter of the object side surface of the second spacer, d2s is the inner diameter of the object side surface of the second spacer, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens. Satisfying 1<(D2s-d2s) / (f2+f3)<2.2 can control the inner and outer diameters of the second spacer, and the inner diameter of the second spacer can play a role in shielding the stray light of the second lens, while controlling the focal lengths of the second lens and the third lens, which is beneficial to controlling the overall length of the front group (i.e., the first lens to the third lens), thereby controlling the overall length of the lens.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1<(CP4+CP4b) / T45<1.5, wherein CP4 is the maximum thickness of the fourth spacer along the optical axis, CP4b is the maximum thickness of the fourth auxiliary spacer along the optical axis, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis. Satisfying 1<(CP4+CP4b) / T45<1.5 can control the thickness of the fourth spacer within a suitable range, ensure the molding stability of the fourth spacer, and indirectly control the edge thickness of the fourth lens and the fifth lens, thereby ensuring the processability and thickness ratio of the two lens molds, thereby facilitating the surface stability of the two lenses after molding, and ultimately helping to improve the quality of the lens.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1 < d4s / f4 + d4m / f5 < 0.8, where d4s is the inner diameter of the object side of the fourth spacer, d4m is the inner diameter of the image side of the fourth spacer, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. Satisfying 0.1 < d4s / f4 + d4m / f5 < 0.8 limits the effective focal lengths of the fourth lens and the fifth lens, which is beneficial to controlling the surface shape of the lens, enabling light to be transmitted along the required path, controlling the inner diameter of the object side and the inner diameter of the image side of the fourth spacer, helping to control the outer diameter of the fourth lens, thereby controlling the weight of this glass lens and reducing the total weight of the lens. In addition, the inner diameter of the image side of the fourth spacer can control the stray light passing through the fourth lens.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1 < DT61 / (D5m - d5m) < 5, where DT61 is the maximum clear aperture diameter of the object side of the sixth lens, D5m is the outer diameter of the image side of the fifth spacer, and d5m is the inner diameter of the image side of the fifth spacer. Satisfying 1 < DT61 / (D5m - d5m) < 5 limits the maximum clear aperture diameter of the object side of the sixth lens and the outer diameter of the image side of the fifth spacer, which helps to control the imaging light to be refracted along the required path at the rear end of the lens, finally controlling the image height of each field of view to the required position. At the same time, it can indirectly control the outer diameters of the fifth lens and the sixth lens, and indirectly control the outer diameter of the rear end of the lens barrel to the required specification.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.2 < d4bs / (R8 + R9) < 0.5, where d4bs is the inner diameter of the object side of the fourth auxiliary spacer, R8 is the radius of curvature of the image side of the fourth lens, and R9 is the radius of curvature of the object side of the fifth lens. Satisfying -0.2 < d4bs / (R8 + R9) < 0.5 limits the inner diameter of the object side of the fourth auxiliary spacer and the radii of curvature of the fourth lens and the fifth lens, which helps to control the light to pass along the required path when passing through the fourth lens to the fifth lens. At the same time, controlling the inner diameter of the fourth auxiliary spacer can effectively intercept the stray light that may enter the fifth lens.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < (D6bm - d6bm) / DT71 < 1, where D6bm is the outer diameter of the image side of the sixth auxiliary spacer, d6bm is the inner diameter of the image side of the sixth auxiliary spacer, and DT71 is the maximum clear aperture diameter of the object side of the seventh lens. Satisfying 0.5 < (D6bm - d6bm) / DT71 < 1 and controlling the inner diameter and outer diameter of the image side of the sixth auxiliary spacer and the maximum clear aperture diameter of the object side of the seventh lens can effectively control the position of the light passing through the seventh lens, ultimately reducing the possibility of stray light occurring in the seventh lens, while ensuring the path accuracy of the imaging light when passing through the last lens, and finally controlling the image height of each field of view to the desired design position.

[0069] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.5 < EP45 / f5 - EP56 / f6 < 0, where EP45 is the distance along the optical axis from the image side of the fourth spacer to the object side of the fifth spacer, EP56 is the distance along the optical axis from the image side of the fifth spacer to the object side of the sixth spacer, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens. Satisfying -0.5 < EP45 / f5 - EP56 / f6 < 0 can effectively control the edge thickness and surface shape of the fifth lens and the sixth lens, thereby ensuring the structural rationality of these two lenses and being beneficial to the surface shape stability after the lenses are formed; controlling the focal lengths of the fifth lens and the sixth lens can make the light refract along the desired path.

[0070] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < CP5 / T56 + CP6 / T67 < 2.5, where CP5 is the maximum thickness of the fifth spacer along the optical axis, CP6 is the maximum thickness of the sixth spacer along the optical axis, T56 is the air gap between the fifth lens and the sixth lens on the optical axis, and T67 is the air gap between the sixth lens and the seventh lens on the optical axis. Due to the structure of the overall optical system, the outer diameter step difference of the last three lenses is relatively large, resulting in a worse stability in the assembly process of the last three lenses and the spacers between them than in the position with a smaller outer diameter step difference. Satisfying 0.5 < CP5 / T56 + CP6 / T67 < 2.5 and controlling the thicknesses of the fifth spacer and the sixth spacer are beneficial to ensuring that the thicknesses of these two spacers are within a suitable range, thereby improving the assembly stability of the last three lenses to a certain extent and being beneficial to enhancing the quality and performance of the lens.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.3 < D0s / DT11 + D0m / DT72 < 2.6, where D0s is the outer diameter of the object-side end face of the lens barrel, D0m is the outer diameter of the image-side end face of the lens barrel, DT11 is the maximum clear aperture diameter of the object-side surface of the first lens, and DT72 is the maximum clear aperture diameter of the image-side surface of the seventh lens. Satisfying 2.3 < D0s / DT11 + D0m / DT72 < 2.6 can effectively control the outer diameter dimensions of the object-side end and the image-side end of the lens barrel, so that the aperture difference between the object-side end and the image-side end is not too large, thereby ensuring that the volume of the overall lens is within a suitable range and avoiding the instability problem of the lens being top-heavy.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.5 < CP6 / (SAG62 + SAG71) < 0, where CP6 is the maximum thickness of the sixth spacer along the optical axis direction, SAG62 is the axial distance between the intersection of the image-side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image-side surface of the sixth lens, and SAG71 is the axial distance between the intersection of the object-side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object-side surface of the seventh lens. Satisfying -0.5 < CP6 / (SAG62 + SAG71) < 0 can ensure that the thickness of the sixth spacer is within a suitable range, and indirectly affect the edge thickness of the sixth lens and the seventh lens, thereby improving the assembly stability of the sixth spacer and indirectly ensuring the formability of the sixth lens and the seventh lens.

[0073] In an exemplary embodiment, external threads are provided at both the object-side end and the image-side end of the lens barrel, as Fig. 10A shown, the object-side end of the lens barrel P0 has an external thread W1, and the image-side end of the lens barrel P0 has an external thread W2.

[0074] In an exemplary embodiment, the optical imaging lens further includes an auxiliary lens barrel provided on the object side of the lens barrel, as Fig. 10B shown, the auxiliary lens barrel P0' includes a first inner wall n1 provided with an internal thread N1.

[0075] In an exemplary embodiment, as Fig. 10B shown, the auxiliary lens barrel P0' further includes a second inner wall n2 that at least partially contacts the object-side surface of the first lens, and the angle φ between the first inner wall n1 and the second inner wall n2 is an obtuse angle.

[0076] Refer to FIG. 2A to FIG. 2C 、 FIG. 4A to FIG. 4C 、 FIG. 6A to FIG. 6CThe auxiliary lens barrel P0' is supported and fitted with the structural position of the object side of the first lens, and cooperates with the external thread W1 of the lens barrel P0 to achieve the function of fixing the front group (i.e., the first lens to the third lens); the angle φ between the first inner wall n1 and the second inner wall n2 of the auxiliary lens barrel P0' is an obtuse angle, which can avoid blocking the effective light of the optical system and improve the overall appearance of the lens barrel. In other words, the external thread W1 of the object side end of the lens barrel P0 is used in conjunction with the auxiliary lens barrel P0'; the external thread W2 of the image side end of the lens barrel P0 is used in conjunction with the module end to fix the lens.

[0077] In an exemplary embodiment, the lens barrel P0 serves as the main lens barrel, and is threadedly connected with the auxiliary lens barrel P0' through the external thread W1 of the object side end of the lens barrel and the internal thread N1 of the first inner wall of the auxiliary lens barrel P0'. However, it should be noted that the threaded connection disclosed herein is only an example and not a limitation; in an alternative embodiment, the combination of the auxiliary lens barrel P0' and the main lens barrel P0 can also be connected in other ways according to actual needs, such as pasting, plugging, etc. The auxiliary lens barrel P0' cooperates with the main lens barrel P0 to achieve a fixing effect on the first lens, and further achieves the position locking of the three lenses of the front group (i.e., the first lens to the third lens), thereby improving the reliability of the lens as a whole.

[0078] In an exemplary embodiment, Fig. 10A As shown, the lens barrel P0 includes a protruding structure A located on the inner wall of the lens barrel and protruding toward the optical axis, and the protruding structure A includes a first surface t1 facing the object side and a second surface t2 facing the image side; FIG. 2A to FIG. 2C , FIG. 4A to FIG. 4C , FIG. 6A to FIG. 6C , the first surface t1 of the protruding structure A is in at least partial contact with the image side surface of the third lens, and the second surface t2 of the protruding structure A is in at least partial contact with the object side surface of the fourth lens. Since the optical imaging lens of the present application is a two-end mounted structure, the protruding structure of the lens barrel is arranged between the third lens and the fourth lens in comprehensive consideration of the lens spacing and the barrel formability, and the aperture position is arranged at the aperture position of the entire optical system, which is used to limit the main imaging light and the field of view size.

[0079] In an exemplary embodiment, reference FIG. 2A to FIG. 2C , FIG. 4A to FIG. 4C , FIG. 6A to FIG. 6C, the first lens, the second lens and the third lens are located on the object side of the convex structure, and the fourth lens, the fifth lens, the sixth lens and the seventh lens are located on the image side of the convex structure. In order to make the optical lens realize the characteristics of large field angle and small aperture, the overall optical structure must have the characteristics of large ends and small middle. At the same time, considering the processing and forming properties of plastic lenses, glass lenses and lens barrels, the two-end structure is finally locked into a 3+4 structure. More specifically, the lens barrel is divided into a large head end and a small head end. The large head end is assembled with 3 lenses, and the small head end is assembled with 4 lenses, that is, the first lens, the second lens and the third lens are assembled in the lens barrel via the object side end of the lens barrel, and the fourth lens, the fifth lens, the sixth lens and the seventh lens are assembled in the lens barrel via the image side end of the lens barrel.

[0080] In an exemplary embodiment, Fig. 10A As shown, the lens barrel P0 includes a recessed structure B located on the outer wall of the lens barrel P0 and recessed toward the optical axis, and the recessed structure B is closer to the image side end of the lens barrel than the protruding structure A; it can be understood that since the lens barrel P0 includes a protruding structure A located on its inner wall and protruding toward the optical axis, then, in order to ensure the uniformity of the overall thickness of the lens barrel P0, the recessed structure B will be adaptively arranged on the outer wall of the lens barrel P0. In addition, in order to ensure the structural stability of the lens barrel, the lens barrel P0 also includes at least two reinforcing rib structures arranged at the recessed structure B. In the design and production of the lens barrel, the reinforcing rib structure is a part of the lens barrel, and the entire lens barrel can be formed in one piece.

[0081] It should be understood that the present application does not specifically limit the number and position of the reinforcing rib structures. Two or more reinforcing rib structures of any number may be provided in the recessed structure of the lens barrel. For example, two reinforcing rib structures may be symmetrically provided with respect to the optical axis; for another example, three reinforcing rib structures may be arranged in a triangle shape at equal intervals around the optical axis; or five reinforcing rib structures may be arranged in a pentagon shape at equal intervals around the optical axis. For example, Fig. 10C As shown, the lens barrel P0 includes four reinforcing rib structures J1, J2, J3 and J4 (not shown), wherein the reinforcing rib structures J1 and J2 are symmetrically arranged relative to the optical axis, and J3 and J4 are symmetrically arranged relative to the optical axis.

[0082] In an exemplary embodiment, the material of the first lens and the third lens is glass. The glass material can obtain a larger refractive index, break through the limitations of all-plastic lenses, obtain better image quality and a larger field of view, and at the same time, the temperature drift performance of the overall optical system is better.

[0083] According to an exemplary embodiment of the present application, an optical imaging lens includes a lens barrel, a lens group, and a spacer group disposed within the lens barrel. The lens group includes, in order from the object side to the image side along the optical axis: a first lens with a negative optical power; a second lens with a negative optical power; a third lens with a positive optical power; a fourth lens with a positive optical power; a fifth lens with a negative optical power; a sixth lens with a positive optical power; and a seventh lens with a negative optical power. The spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens, a fifth spacer disposed between the fifth lens and the sixth lens and at least partially in contact with the image side surface of the fifth lens, and a sixth spacer disposed between the sixth lens and the seventh lens and at least partially in contact with the image side surface of the sixth lens. The lens barrel includes an object side end facing the object side and an image side end facing the image side. At least a part of the outer periphery of the first lens abuts against the inner wall of the object side end of the lens barrel. The optical imaging lens satisfies: -0.5 < EP45 / f5 - EP56 / f6 < 0, where EP45 is the distance along the optical axis from the image side surface of the fourth spacer to the object side surface of the fifth spacer, EP56 is the distance along the optical axis from the image side surface of the fifth spacer to the object side surface of the sixth spacer, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens. Satisfying -0.5 < EP45 / f5 - EP56 / f6 < 0 can effectively control the edge thickness and surface shape of the fifth lens and the sixth lens, thereby ensuring the structural rationality of these two lenses and being beneficial to the surface shape stability after the lenses are formed; controlling the focal lengths of the fifth lens and the sixth lens can make the light rays refract along the desired path.

[0084] In an embodiment of the present application, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one of the object side surface of the first lens to the image side surface of the seventh lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature changes continuously 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 the aberration that appears during imaging as much as possible, thereby improving the imaging quality. Optionally, the object side surface and the image side surface of the first lens are spherical lens surfaces, and the object side surfaces and the image side surfaces of all the lenses from the second lens to the seventh lens are aspherical lens surfaces.

[0085] In an exemplary embodiment, 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.

[0086] The optical imaging lens according to the above-mentioned embodiment of the present application may adopt multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the optical power, surface shape and arrangement of each spacer of each lens, the span of each gear of the lens and the lens barrel is made more uniform, which enhances the ability of light convergence and improves the imaging quality of the ultra-wide-angle and large-image optical imaging lens. However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solution claimed for protection in this application to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0087] The following further describes specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments with reference to the accompanying drawings. FIG. 2A to FIG. 3B Describe the optical imaging lenses 1001, 1002 and 1003 according to Embodiments 1 to 3 of the present application; refer to FIG. 4A to FIG. 5B Describe the optical imaging lenses 2001, 2002 and 2003 according to Embodiments 4 to 6 of the present application; refer to 6A to 7B Optical imaging lenses 3001 , 3002 , and 3003 according to Embodiments 7 to 9 of the present application are described.

[0088] Example 1

[0089] Figure 2A FIG. 1 shows a schematic structural diagram of an optical imaging lens 1001 according to Embodiment 1 of the present application. Figure 2A As shown, the optical imaging lens 1001 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1-E7 and a spacer group. The optical imaging lens 1001 also includes a stop STO (not shown) disposed between the third lens and the fourth lens.

[0090] like Figure 2AAs shown, the lens group of the optical imaging lens 1001 includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. The seventh lens E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens 1001 also includes a filter (not shown) for correcting color deviation, and the filter has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each surface S1 to S16 and is finally imaged on an imaging surface S17 (not shown).

[0091] Table 1 shows a basic parameter table of the lens group of the optical imaging lens 1001 of Example 1, wherein the units of the curvature radius, thickness / distance, effective focal length and effective radius are all millimeters (mm).

[0092]

[0093] Table 1

[0094] In Example 1, the object side surface and the image side surface of any lens from the second lens E2 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0095]

[0096] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0097] Face number A4 A6 A8 A10 A12 A14 A16 S3 4.9173E-03 7.3934E-04 -2.9702E-04 4.6409E-05 -3.9737E-06 1.4129E-07 8.4350E-09 S4 -8.6869E-04 3.5335E-03 -1.2424E-03 2.4197E-04 -3.8097E-05 6.5523E-06 -1.1158E-06 S5 -1.3554E-03 7.6643E-04 -4.9699E-04 1.3553E-04 -1.6716E-05 -9.7411E-07 7.1217E-07 S6 -7.8663E-03 1.7799E-03 3.0792E-02 -1.0429E-01 2.0593E-01 -2.5610E-01 2.0094E-01 S7 -7.4354E-03 8.4611E-03 -1.5062E-02 4.5774E-02 -1.0254E-01 1.4793E-01 -1.3798E-01 S8 -1.5868E-02 3.2842E-03 1.1061E-02 -4.7871E-02 9.3729E-02 -1.1144E-01 8.5311E-02 S9 -6.1672E-02 4.0594E-02 -3.3670E-02 1.9063E-02 4.3180E-04 -1.0307E-02 8.6091E-03 S10 -7.1508E-02 5.4087E-02 -4.3086E-02 2.8856E-02 -1.4118E-02 4.9968E-03 -1.2877E-03 S11 -1.9461E-02 1.0403E-02 -7.5558E-04 -5.2788E-03 5.2635E-03 -2.8963E-03 1.0731E-03 S12 -3.2503E-02 2.4740E-02 -9.8944E-03 1.9247E-03 7.4746E-04 -9.4008E-04 4.5901E-04 S13 -8.9263E-02 2.9712E-02 -1.0281E-02 5.0627E-03 -2.6552E-03 9.2922E-04 -1.7714E-04 S14 -8.2836E-02 2.4686E-02 -2.6250E-03 -1.7765E-03 1.0534E-03 -2.9670E-04 5.3263E-05

[0098] Table 2-1

[0099] Face number A18 A20 A22 A24 A26 A28 A30 S3 -1.4846E-09 1.0121E-10 -4.1929E-12 1.1265E-13 -1.9258E-15 1.9108E-17 -8.3968E-20 S4 1.4564E-07 -1.3094E-08 7.8060E-10 -2.9494E-11 6.3957E-13 -6.0620E-15 0.0000E+00 S5 -1.2264E-07 1.1543E-08 -6.4232E-10 1.9913E-11 -2.6639E-13 0.0000E+00 0.0000E+00 S6 -9.6003E-02 2.5422E-02 -2.8538E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 8.2634E-02 -3.0589E-02 6.3521E-03 -5.6459E-04 0.0000E+00 0.0000E+00 0.0000E+00 S8 -4.2266E-02 1.3090E-02 -2.3016E-03 1.7515E-04 0.0000E+00 0.0000E+00 0.0000E+00 S9 -3.7338E-03 9.4212E-04 -1.3111E-04 7.8122E-06 0.0000E+00 0.0000E+00 0.0000E+00 S10 2.3933E-04 -3.0711E-05 2.4291E-06 -8.7695E-08 0.0000E+00 0.0000E+00 0.0000E+00 S11 -2.7924E-04 5.0450E-05 -5.9990E-06 4.1909E-07 -1.2940E-08 0.0000E+00 0.0000E+00 S12 -1.3156E-04 2.2650E-05 -1.9889E-06 -1.0600E-08 2.1034E-08 -1.9261E-09 5.9689E-11 S13 7.1088E-06 4.8877E-06 -1.3057E-06 1.6537E-07 -1.1931E-08 4.7118E-10 -7.9356E-12 S14 -6.5665E-06 5.6982E-07 -3.4815E-08 1.4671E-09 -4.0593E-11 6.6366E-13 -4.8571E-15

[0100] Table 2-2

[0101] Table 3 shows the values ​​of half of the maximum field of view Semi-FOV, entrance pupil diameter EPD, and effective focal length f of the optical imaging lens 1001.

[0102] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 67.39 1.08 2.37

[0103] Table 3

[0104] like Figure 2A As shown, the optical imaging lens 1001 further includes 7 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a fifth auxiliary spacer P5b, a sixth spacer P6, and a sixth auxiliary spacer P6b. The second spacer P2 is placed on the image side of the second lens and at least partially in contact with the image side surface of the second lens; the fourth spacer P4 is placed on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens; the fourth auxiliary spacer P4b is placed on the image side of the fourth spacer and at least partially in contact with the image side surface of the fourth spacer; the fifth spacer P5 is placed on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens; the fifth auxiliary spacer P5b is placed on the image side of the fifth spacer and at least partially in contact with the image side surface of the fifth spacer; the sixth spacer P6 is placed on the image side of the sixth lens and at least partially in contact with the image side surface of the sixth lens, and the sixth auxiliary spacer P6b is placed on the image side of the sixth spacer and at least partially in contact with the image side surface of the sixth spacer. Table 4 shows the basic parameters of the spacer and lens barrel of the optical imaging lens 1001, and the units of each parameter in Table 4 are millimeters (mm). The spacer can block the entry of extra external light, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 1001.

[0105] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.38 16 3.8 3.65 3.53 4.92 6.09 6.79 8.2 6.06 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.2 22.36 11.9 0.784 0.022 0.843 0.253 0.768 0.532

[0106] Table 4

[0107] Example 2

[0108] Figure 2B The structure diagram of the optical imaging lens 1002 according to Embodiment 2 of the present application is shown. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted.

[0109] like Figure 2BAs shown, the optical imaging lens 1002 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 1002 also includes a stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 1002 is exactly the same as the lens group of the optical imaging lens 1001 of Example 1. The basic parameters thereof are detailed in Tables 1 to 3, and are not described in detail.

[0110] like Figure 2B As shown, the optical imaging lens 1002 further includes 7 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a fifth auxiliary spacer P5b, a sixth spacer P6, and a sixth auxiliary spacer P6b. Table 5 shows the basic parameters of the spacers and the lens barrel of the optical imaging lens 1002, and the units of each parameter in Table 5 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 1002.

[0111] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.71 16.06 3.72 3.71 3.57 4.92 6.15 6.79 8.2 6.14 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.26 22.36 11.9 0.784 0.022 0.858 0.238 0.768 0.562

[0112] Table 5

[0113] Example 3

[0114] Figure 2C A schematic structural diagram of an optical imaging lens 1003 according to Embodiment 3 of the present application is shown.

[0115] like Figure 2C As shown, the optical imaging lens 1003 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 1003 also includes a stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 1003 is exactly the same as the lens group of the optical imaging lens 1001 of Example 1. The basic parameters thereof are detailed in Tables 1 to 3, and are not described in detail.

[0116] like Figure 2C As shown, the optical imaging lens 1003 further includes 7 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a fifth auxiliary spacer P5b, a sixth spacer P6, and a sixth auxiliary spacer P6b. Table 6 shows a basic parameter table of the spacers and the lens barrel of the optical imaging lens 1003, and the units of each parameter in Table 6 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 1003.

[0117]

[0118]

[0119] Table 6

[0120] Figure 3A The axial chromatic aberration curves of the optical imaging lens 1001 of Example 1, the optical imaging lens 1002 of Example 2, and the optical imaging lens 1003 of Example 3 are shown, which indicate the deviation of light rays of different wavelengths from the focal point behind the lens. Figure 3B The astigmatism curves of the optical imaging lens 1001 of Example 1, the optical imaging lens 1002 of Example 2, and the optical imaging lens 1003 of Example 3 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. FIG. 3A to FIG. 3B It can be seen that the optical imaging lenses 1001 , 1002 , and 1003 provided in Examples 1 to 3 can achieve good imaging quality.

[0121] Example 4

[0122] Figure 4A FIG. 2 shows a schematic structural diagram of an optical imaging lens 2001 according to Embodiment 4 of the present application. Figure 4A As shown, the optical imaging lens 2001 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1-E7 and a spacer group. The optical imaging lens 2001 also includes a stop STO (not shown) disposed between the third lens and the fourth lens.

[0123] like Figure 4A As shown, the lens group of the optical imaging lens 2001 includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The sixth lens E6 has an object-side surface S11 and an image-side surface S12. The seventh lens E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens 2001 also includes a filter (not shown) for correcting color deviation, and the filter has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each surface S1 to S16 and is finally imaged on an imaging surface S17 (not shown).

[0124] Table 7 shows a basic parameter table of the lens group of the optical imaging lens 2001 of Example 4, wherein the units of the curvature radius, thickness / distance, effective focal length and effective radius are all millimeters (mm).

[0125]

[0126] Table 7

[0127] Table 8-1 and Table 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein each aspherical surface shape can be defined by the formula (1) given in the above-mentioned Example 1.

[0128] Face number A4 A6 A8 A10 A12 A14 A16 S3 4.1184E-03 1.4694E-03 -6.2548E-04 1.3280E-04 -1.8715E-05 1.8694E-06 -1.3542E-07 S4 -2.3429E-03 6.2802E-03 -3.3279E-03 1.1238E-03 -2.7352E-04 4.8754E-05 -6.3509E-06 S5 -7.4908E-04 -6.0362E-04 5.9782E-04 -3.8174E-04 1.4533E-04 -3.6087E-05 6.0681E-06 S6 -2.5738E-03 -2.7136E-03 3.6860E-02 -9.9763E-02 1.6487E-01 -1.7776E-01 1.2545E-01 S7 -7.0019E-03 1.2293E-02 -4.3445E-02 1.4311E-01 -3.2465E-01 4.8962E-01 -4.9027E-01 S8 -6.2187E-03 3.7466E-04 -4.3325E-03 2.6913E-02 -6.6269E-02 8.9471E-02 -7.4228E-02 S9 -1.5481E-02 -4.1440E-03 3.3561E-02 -6.5166E-02 7.5561E-02 -5.7561E-02 2.9253E-02 S10 -4.5328E-02 3.3818E-02 -2.3348E-02 1.3994E-02 -6.6156E-03 2.3535E-03 -6.0484E-04 S11 -2.2724E-02 1.8281E-02 -2.2688E-02 3.0070E-02 -3.0224E-02 2.0912E-02 -9.9422E-03 S12 -1.6831E-02 -2.3577E-02 7.1545E-02 -8.6001E-02 6.3187E-02 -3.0752E-02 1.0099E-02 S13 -8.2968E-02 1.3568E-02 2.0536E-02 -2.7262E-02 1.7857E-02 -7.4946E-03 2.1520E-03 S14 -9.6469E-02 4.6821E-02 -1.9049E-02 5.2758E-03 -8.5259E-04 4.1018E-05 1.3696E-05

[0129] Table 8-1

[0130] Face number A18 A20 A22 A24 A26 A28 A30 S3 7.1645E-09 -2.7593E-10 7.6291E-12 -1.4708E-13 1.8713E-15 -1.4073E-17 4.7169E-20 S4 5.9953E-07 -4.0408E-08 1.8918E-09 -5.8387E-11 1.0671E-12 -8.7375E-15 0.0000E+00 S5 -6.9742E-07 5.4064E-08 -2.7069E-09 7.9100E-11 -1.0252E-12 0.0000E+00 0.0000E+00 S6 -5.5720E-02 1.4088E-02 -1.5403E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 3.2099E-01 -1.3171E-01 3.0690E-02 -3.0955E-03 0.0000E+00 0.0000E+00 0.0000E+00 S8 3.8909E-02 -1.2596E-02 2.3040E-03 -1.8232E-04 0.0000E+00 0.0000E+00 0.0000E+00 S9 -9.8023E-03 2.0766E-03 -2.5165E-04 1.3275E-05 0.0000E+00 0.0000E+00 0.0000E+00 S10 1.0409E-04 -1.0396E-05 4.2155E-07 3.9997E-09 0.0000E+00 0.0000E+00 0.0000E+00 S11 3.2541E-03 -7.2198E-04 1.0375E-04 -8.7038E-06 3.2299E-07 0.0000E+00 0.0000E+00 S12 -2.2034E-03 2.9608E-04 -1.7419E-05 -1.2437E-06 3.1709E-07 -2.3429E-08 6.4416E-10 S13 -4.3359E-04 6.1618E-05 -6.1031E-06 4.0782E-07 -1.7219E-08 4.0154E-10 -3.6656E-12 S14 -3.6078E-06 4.4957E-07 -3.4675E-08 1.7318E-09 -5.4725E-11 9.9737E-13 -8.0011E-15

[0131] Table 8-2

[0132] Table 9 shows the values ​​of Semi-FOV, half of the maximum field of view angle, entrance pupil diameter EPD, and effective focal length f of the optical imaging lens 2001.

[0133] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 66.81 1.04 2.43

[0134] Table 9

[0135] like Figure 4A As shown, the optical imaging lens 2001 further includes 6 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a sixth spacer P6, and a sixth auxiliary spacer P6b. The second spacer P2 is placed on the image side of the second lens and at least partially contacts the image side surface of the second lens; the fourth spacer P4 is placed on the image side of the fourth lens and at least partially contacts the image side surface of the fourth lens; the fourth auxiliary spacer P4b is placed on the image side of the fourth spacer and at least partially contacts the image side surface of the fourth spacer; the fifth spacer P5 is placed on the image side of the fifth lens and at least partially contacts the image side surface of the fifth lens; the sixth spacer P6 is placed on the image side of the sixth lens and at least partially contacts the image side surface of the sixth lens, and the sixth auxiliary spacer P6b is placed on the image side of the sixth spacer and at least partially contacts the image side surface of the sixth spacer. Table 10 shows the basic parameter table of the spacers and the lens barrel of the optical imaging lens 2001, and the units of each parameter in Table 10 are millimeters (mm). The above-mentioned isolation member can block the entry of excess external light, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 2001 can be enhanced.

[0136] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.59 16 3.8 3.65 3.46 4.28 6.9 6.79 8.2 6.12 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.2 22.36 11.9 0.828 0.022 1.513 0.018 0.914 0.532

[0137] Table 10

[0138] Example 5

[0139] Figure 4BThe structure diagram of the optical imaging lens 2002 according to Embodiment 5 of the present application is shown. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 4 will be omitted.

[0140] like Figure 4B As shown, the optical imaging lens 2002 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 2002 also includes a stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 2002 is exactly the same as the lens group of the optical imaging lens 2001 of Example 4. The basic parameters thereof are detailed in Tables 7 to 9, and will not be described in detail.

[0141] like Figure 4B As shown, the optical imaging lens 2002 further includes 6 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a sixth spacer P6, and a sixth auxiliary spacer P6b. Table 11 shows the basic parameters of the spacers and the lens barrel of the optical imaging lens 2002, and the units of each parameter in Table 11 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 2002.

[0142] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.91 16.06 3.74 3.65 3.52 4.32 6.96 6.69 8.2 6.18 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.26 22.36 11.9 0.828 0.022 1.513 0.018 0.964 0.582

[0143] Table 11

[0144] Example 6

[0145] Figure 4C A schematic structural diagram of an optical imaging lens 2003 according to Embodiment 6 of the present application is shown.

[0146] like Figure 4C As shown, the optical imaging lens 2003 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 2003 also includes a stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 2003 is exactly the same as the lens group of the optical imaging lens 2001 of Example 4. The basic parameters thereof are detailed in Tables 7 to 9, and will not be described in detail.

[0147] like Figure 4CAs shown, the optical imaging lens 2003 further includes 6 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a sixth spacer P6, and a sixth auxiliary spacer P6b. Table 12 shows the basic parameters of the spacers and the lens barrel of the optical imaging lens 2003, and the units of each parameter in Table 12 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 2003.

[0148] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.19 16.16 3.59 3.65 3.54 4.36 7.06 6.63 8.2 6.2 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.36 22.36 11.9 0.854 0.022 1.486 0.018 0.834 0.632

[0149] Table 12

[0150] Figure 5A The axial chromatic aberration curves of the optical imaging lens 2001 of Example 4, the optical imaging lens 2002 of Example 5, and the optical imaging lens 2003 of Example 6 are shown, which indicate the deviation of light rays of different wavelengths from the focal point behind the lens. Figure 5B The astigmatism curves of the optical imaging lens 2001 of Example 4, the optical imaging lens 2002 of Example 5, and the optical imaging lens 2003 of Example 6 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. FIG. 5A to FIG. 5B It can be seen that the optical imaging lenses 2001, 2002, and 2003 provided in Examples 4 to 6 can achieve good imaging quality.

[0151] Example 7

[0152] Fig. 6A FIG. 3 shows a schematic structural diagram of an optical imaging lens 3001 according to Embodiment 7 of the present application. Fig. 6A As shown, the optical imaging lens 3001 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1-E7 and a spacer group. The optical imaging lens 3001 also includes a stop STO (not shown) disposed between the third lens and the fourth lens.

[0153] like Fig. 6AAs shown, the lens group of the optical imaging lens 3001 includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7. The first lens E1 has an object side surface S1 and an image side surface S2. The second lens E2 has an object side surface S3 and an image side surface S4. The third lens E3 has an object side surface S5 and an image side surface S6. The fourth lens E4 has an object side surface S7 and an image side surface S8. The fifth lens E5 has an object side surface S9 and an image side surface S10. The sixth lens E6 has an object side surface S11 and an image side surface S12. The seventh lens E7 has an object side surface S13 and an image side surface S14. The optical imaging lens 3001 also includes a filter (not shown) for correcting color deviation, and the filter has an object side surface S15 and an image side surface S16. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on an imaging surface S17 (not shown).

[0154] Table 13 shows a basic parameter table of the lens group of the optical imaging lens 3001 of Example 7, wherein the units of the curvature radius, thickness / distance, effective focal length and effective radius are all millimeters (mm).

[0155]

[0156] Table 13

[0157] Tables 14-1 and 14-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in the above Example 1.

[0158] Face number A4 A6 A8 A10 A12 A14 A16 S3 5.1890E-03 5.9772E-04 -2.5303E-04 4.1838E-05 -4.4281E-06 3.2782E-07 -1.6898E-08 S4 1.1744E-03 3.1846E-03 -1.4815E-03 5.9122E-04 -2.0708E-04 5.3157E-05 -9.5054E-06 S5 -5.3030E-03 1.0064E-03 -4.7088E-04 1.2813E-04 -2.2886E-05 2.6682E-06 -1.9309E-07 S6 -4.0567E-03 1.8712E-02 -6.7021E-02 1.7561E-01 -2.9191E-01 3.1280E-01 -2.1545E-01 S7 -3.7278E-03 3.1070E-03 -7.8947E-03 4.4682E-02 -1.3343E-01 2.2845E-01 -2.4086E-01 S8 -1.3480E-02 -2.4083E-03 1.8092E-02 -4.3140E-02 6.7981E-02 -7.3350E-02 5.3610E-02 S9 -6.4093E-02 2.6851E-02 1.2179E-02 -6.3371E-02 9.5457E-02 -8.2093E-02 4.4451E-02 S10 -7.7027E-02 6.2516E-02 -4.9030E-02 2.7957E-02 -8.7062E-03 2.6803E-04 9.1998E-04 S11 -2.3925E-02 2.0851E-02 -1.2374E-02 3.4691E-03 1.6614E-04 -5.4099E-04 2.4001E-04 S12 -4.3303E-02 4.9995E-02 -5.0179E-02 4.7075E-02 -3.4206E-02 1.8099E-02 -6.9553E-03 S13 -9.3403E-02 4.2304E-02 -2.5933E-02 1.8085E-02 -1.0340E-02 4.2473E-03 -1.2343E-03 S14 -8.3153E-02 3.1165E-02 -9.9497E-03 2.4470E-03 -4.5116E-04 6.1999E-05 -6.3765E-06

[0159] Table 14-1

[0160] Face number A18 A20 A22 A24 A26 A28 A30 S3 5.5212E-10 -6.9338E-12 -2.8797E-13 1.7490E-14 -4.2613E-16 5.3107E-18 -2.7746E-20 S4 1.1885E-06 -1.0463E-07 6.4578E-09 -2.7342E-10 7.5569E-12 -1.2265E-13 8.8522E-16 S5 7.5943E-09 -7.7290E-11 -4.9210E-12 1.4040E-13 0.0000E+00 0.0000E+00 0.0000E+00 S6 9.2211E-02 -2.2340E-02 2.3446E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.5888E-01 -6.3825E-02 1.4271E-02 -1.3625E-03 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.5990E-02 7.9633E-03 -1.3870E-03 1.0385E-04 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.5457E-02 3.3532E-03 -4.1268E-04 2.1936E-05 0.0000E+00 0.0000E+00 0.0000E+00 S10 -3.9068E-04 7.9765E-05 -8.5293E-06 3.8240E-07 0.0000E+00 0.0000E+00 0.0000E+00 S11 -6.2503E-05 1.0687E-05 -1.1725E-06 7.4336E-08 -2.0561E-09 0.0000E+00 0.0000E+00 S12 1.9478E-03 -3.9646E-04 5.7905E-05 -5.9023E-06 3.9790E-07 -1.5908E-08 2.8491E-10 S13 2.5480E-04 -3.7371E-05 3.8557E-06 -2.7254E-07 1.2506E-08 -3.3315E-10 3.8656E-12 S14 4.9324E-07 -2.8689E-08 1.2422E-09 -3.9013E-11 8.4257E-13 -1.1208E-14 6.9166E-17

[0161] Table 14-2

[0162] Table 15 shows the values ​​of Semi-FOV, half of the maximum field of view angle, entrance pupil diameter EPD, and effective focal length f of the optical imaging lens 3001.

[0163] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 67.18 1.05 2.34

[0164] Table 15

[0165] like Fig. 6AAs shown, the optical imaging lens 3001 further includes 7 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a fifth auxiliary spacer P5b, a sixth spacer P6, and a sixth auxiliary spacer P6b. The second spacer P2 is placed on the image side of the second lens and at least partially in contact with the image side surface of the second lens; the fourth spacer P4 is placed on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens; the fourth auxiliary spacer P4b is placed on the image side of the fourth spacer and at least partially in contact with the image side surface of the fourth spacer; the fifth spacer P5 is placed on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens; the fifth auxiliary spacer P5b is placed on the image side of the fifth spacer and at least partially in contact with the image side surface of the fifth spacer; the sixth spacer P6 is placed on the image side of the sixth lens and at least partially in contact with the image side surface of the sixth lens, and the sixth auxiliary spacer P6b is placed on the image side of the sixth spacer and at least partially in contact with the image side surface of the sixth spacer. Table 16 shows the basic parameters of the spacer and lens barrel of the optical imaging lens 3001, and the units of each parameter in Table 16 are millimeters (mm). The spacer can block the entry of extra external light, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 3001.

[0166] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.88 16 3.66 3.65 3.43 4.92 6.09 7.01 8.2 5.99 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.2 22.37 11.9 0.709 0.022 0.853 0.195 0.853 0.639

[0167] Table 16

[0168] Example 8

[0169] Figure 6B FIG. 3 is a schematic diagram showing the structure of an optical imaging lens 3002 according to Embodiment 8 of the present application. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 7 will be omitted.

[0170] like Figure 6B As shown, the optical imaging lens 3002 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 3002 also includes an aperture stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 3002 is exactly the same as the lens group of the optical imaging lens 3001 of Example 7. The basic parameters thereof are detailed in Tables 13 to 15, and will not be described in detail.

[0171] like Figure 6BAs shown, the optical imaging lens 3002 further includes 7 spacers, namely, a second spacer P2, a fourth spacer P4, a fourth auxiliary spacer P4b, a fifth spacer P5, a fifth auxiliary spacer P5b, a sixth spacer P6, and a sixth auxiliary spacer P6b. Table 17 shows a basic parameter table of the spacers and the lens barrel of the optical imaging lens 3002, and the units of each parameter in Table 17 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 3002.

[0172] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.75 16.06 3.66 3.65 3.47 4.92 6.15 7.03 8.2 6.03 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.26 22.37 11.9 0.709 0.022 0.853 0.195 0.853 0.609

[0173] Table 17

[0174] Example 9

[0175] Figure 6C A schematic structural diagram of an optical imaging lens 3003 according to Embodiment 9 of the present application is shown.

[0176] like Figure 6C As shown, the optical imaging lens 3003 includes a lens barrel P0, an auxiliary lens barrel P0', lens groups E1 to E7, and a spacer group. The optical imaging lens 3003 also includes a stop STO (not shown) disposed between the third lens and the fourth lens. The lens group of the optical imaging lens 3003 is exactly the same as the lens group of the optical imaging lens 3001 of Example 7. The basic parameters thereof are detailed in Tables 13 to 15, and will not be described in detail.

[0177] like Figure 6C As shown, the optical imaging lens 3003 also includes 7 spacers, namely, the second spacer P2, the fourth spacer P4, the fourth auxiliary spacer P4b, the fifth spacer P5, the sixth spacer P6 and the sixth auxiliary spacer P6b. Table 18 shows the basic parameters of the spacers and the lens barrel of the optical imaging lens 3003, and the units of each parameter in Table 18 are millimeters (mm). The above-mentioned spacers can block the entry of extra external light, so that the lens and the lens barrel can be better supported, and enhance the structural stability of the optical imaging lens 3003.

[0178] parameter d2s D2s d4s d4m d4bs d5m D5m D6s D6m d6bm Numeric 7.22 16.16 3.46 4.78 3.49 4.76 6.23 6.94 8.2 6.1 parameter D6 D0s D0m CP4 CP4b EP45 CP5 EP56 CP6 Numeric 10.36 22.37 11.9 0.729 0.022 0.832 0.208 0.832 0.691

[0179] Table 18

[0180] Fig. 7A The axial chromatic aberration curves of the optical imaging lens 3001 of Example 7, the optical imaging lens 3002 of Example 8, and the optical imaging lens 3003 of Example 9 are shown, which indicate the deviation of light rays of different wavelengths from the focal point behind the lens. Figure 7BThe astigmatism curves of the optical imaging lens 3001 of Example 7, the optical imaging lens 3002 of Example 8, and the optical imaging lens 3003 of Example 9 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. FIG. 7A to FIG. 7B It can be seen that the optical imaging lenses 3001, 3002, and 3003 provided in Examples 7 to 9 can achieve good imaging quality.

[0181] In summary, the imaging lenses of Examples 1 to 9 satisfy the relationship shown in Table 19.

[0182] Conditional / Example 1 2 3 4 5 6 7 8 9 CP6 / T67 0.98 1.04 1.18 0.90 0.99 1.07 1.25 1.19 1.35 (f7-f6) / (D6m-D6s) -10.94 -10.94 -10.94 -11.81 -11.03 -10.61 -12.84 -13.06 -12.13 (D2s-d2s) / (f2+f3) 1.21 1.17 1.16 1.56 1.51 1.67 1.93 1.97 2.12 (CP4+CP4b) / T45 1.29 1.29 1.33 1.31 1.31 1.35 1.28 1.28 1.31 d4s / f4+d4m / f5 0.51 0.49 0.49 0.33 0.31 0.28 0.35 0.35 0.17 DT61 / (D5m-d5m) 4.00 3.81 3.47 1.64 1.62 1.59 3.98 3.79 3.17 d4bs / (R8+R9) 0.36 0.36 0.36 -0.12 -0.12 -0.12 0.22 0.22 0.22 (D6bm-d6bm) / DT71 0.66 0.66 0.66 0.65 0.65 0.67 0.69 0.70 0.70 EP45 / f5-EP56 / f6 -0.22 -0.22 -0.21 -0.39 -0.40 -0.37 -0.26 -0.26 -0.25 CP5 / T56+CP6 / T67 1.63 1.64 1.87 0.98 1.06 1.15 1.87 1.81 2.01 D0s / DT11+D0m / DT72 2.48 2.48 2.48 2.52 2.52 2.52 2.48 2.48 2.48 CP6 / (SAG62+SAG71) -0.28 -0.29 -0.33 -0.35 -0.38 -0.41 -0.33 -0.31 -0.36

[0183] Table 19

[0184] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0185] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. An optical imaging lens, It is characterized in that include: A lens barrel and a lens group and a spacer group placed in the lens barrel, wherein: The lens group includes, in order from the object side to the image side along the optical axis: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive refractive power; a fourth lens having positive refractive power; a fifth lens having negative optical power; a sixth lens having positive refractive power; and a seventh lens having negative optical power; The spacer group includes a sixth spacer disposed between the sixth lens and the seventh lens and at least partially in contact with the image side surface of the sixth lens; The lens barrel includes an object side end facing the object side and an image side end facing the image side; The outer periphery of the first lens at least partially rests on the inner wall of the object side end of the lens barrel; The maximum thickness CP6 of the sixth spacer along the optical axis and the air interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.8 <CP6 / T67<1.5; The effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, the outer diameter D6m of the image side surface of the sixth spacer and the outer diameter D6s of the object side surface of the sixth spacer satisfy: -14<(f7-f6) / (D6m-D6s)<-10.

2. The optical imaging lens according to claim 1, It is characterized in that The spacer set includes: a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; The optical imaging lens satisfies: 1<(D2s-d2s) / (f2+f3)<2.2, wherein D2s is the outer diameter of the object side surface of the second isolation member, d2s is the inner diameter of the object side surface of the second isolation member, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.

3. The optical imaging lens according to claim 1, It is characterized in that The spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens, and a fourth auxiliary spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth spacer; The optical imaging lens satisfies: 1<(CP4+CP4b) / T45<1.5, wherein CP4 is the maximum thickness of the fourth spacer along the optical axis, CP4b is the maximum thickness of the fourth auxiliary spacer along the optical axis, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis.

4. The optical imaging lens according to claim 1, It is characterized in that The spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens; The optical imaging lens satisfies: 0.1 < d4s / f4 + d4m / f5 < 0.8, where d4s is the inner diameter of the object side of the fourth spacer, d4m is the inner diameter of the image side of the fourth spacer, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens.

5. The optical imaging lens according to claim 1, wherein, the spacer group includes: a fifth spacer disposed between the fifth lens and the sixth lens and at least partially contacting the image side of the fifth lens; the optical imaging lens satisfies: 1 < DT61 / (D5m - d5m) < 5, where DT61 is the maximum clear aperture diameter of the object side of the sixth lens, D5m is the outer diameter of the image side of the fifth spacer, and d5m is the inner diameter of the image side of the fifth spacer.

6. The optical imaging lens according to claim 1, wherein, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially contacting the image side of the fourth lens, and a fourth auxiliary spacer disposed between the fourth lens and the fifth lens and at least partially contacting the image side of the fourth spacer; the optical imaging lens satisfies: -0.2 < d4bs / (R8 + R9) < 0.5, where d4bs is the inner diameter of the object side of the fourth auxiliary spacer, R8 is the radius of curvature of the image side of the fourth lens, and R9 is the radius of curvature of the object side of the fifth lens.

7. The optical imaging lens according to claim 1, wherein, the spacer group includes: a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side of the sixth lens, and a sixth auxiliary spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side of the sixth spacer; the optical imaging lens satisfies: 0.5 < (D6bm - d6bm) / DT71 < 1, where D6bm is the outer diameter of the image side of the sixth auxiliary spacer, d6bm is the inner diameter of the image side of the sixth auxiliary spacer, and DT71 is the maximum clear aperture diameter of the object side of the seventh lens.

8. The optical imaging lens according to claim 1, wherein, the spacer group includes: a fourth spacer disposed between the fourth lens and the fifth lens and at least partially contacting the image side of the fourth lens, a fifth spacer disposed between the fifth lens and the sixth lens and at least partially contacting the image side of the fifth lens, and a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side of the sixth lens; The optical imaging lens satisfies: -0.5 < EP45 / f5 - EP56 / f6 < 0, where EP45 is the distance along the optical axis from the image side of the fourth spacer to the object side of the fifth spacer, EP56 is the distance along the optical axis from the image side of the fifth spacer to the object side of the sixth spacer, f5 is the effective focal length of the fifth lens, and f6 is the effective focal length of the sixth lens.

9. The optical imaging lens according to claim 1, wherein, the spacer group includes: a fifth spacer disposed between the fifth lens and the sixth lens and at least partially contacting the image side of the fifth lens, and a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side of the sixth lens; the optical imaging lens satisfies: 0.5 < CP5 / T56 + CP6 / T67 < 2.5, where CP5 is the maximum thickness of the fifth spacer along the optical axis, CP6 is the maximum thickness of the sixth spacer along the optical axis, T56 is the air gap between the fifth lens and the sixth lens on the optical axis, and T67 is the air gap between the sixth lens and the seventh lens on the optical axis.

10. The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: 2.3 < D0s / DT11 + D0m / DT72 < 2.6, where D0s is the outer diameter of the object-side end face of the lens barrel, D0m is the outer diameter of the image-side end face of the lens barrel, DT11 is the maximum clear aperture diameter of the object side of the first lens, and DT72 is the maximum clear aperture diameter of the image side of the seventh lens.

11. The optical imaging lens according to claim 1, wherein, the spacer group includes: a sixth spacer disposed between the sixth lens and the seventh lens and at least partially contacting the image side of the sixth lens; the optical imaging lens satisfies: -0.5 < CP6 / (SAG62 + SAG71) < 0, where CP6 is the maximum thickness of the sixth spacer along the optical axis, SAG62 is the axial distance between the intersection of the image side of the sixth lens and the optical axis and the vertex of the effective radius of the image side of the sixth lens, and SAG71 is the axial distance between the intersection of the object side of the seventh lens and the optical axis and the vertex of the effective radius of the object side of the seventh lens.

12. The optical imaging lens according to claim 1, wherein, external threads are provided at both the object side end and the image side end of the lens barrel; and the optical imaging lens further includes an auxiliary lens barrel, which is disposed on the object side of the lens barrel and includes a first inner wall provided with internal threads.

13. The optical imaging lens according to claim 12, wherein, the lens barrel and the auxiliary lens barrel are threadedly connected by the external threads at the object side end of the lens barrel and the internal threads of the first inner wall of the auxiliary lens barrel.

14. The optical imaging lens according to claim 12, wherein, The auxiliary lens barrel further includes a second inner wall at least partially in contact with the object side surface of the first lens, wherein an angle between the first inner wall and the second inner wall is an obtuse angle.

15. The optical imaging lens according to any one of claims 1 to 14, It is characterized in that The first lens and the third lens are made of glass.

16. The optical imaging lens according to any one of claims 1 to 14, It is characterized in that The lens barrel comprises a protruding structure located on the inner wall of the lens barrel and protruding toward the optical axis, wherein the protruding structure comprises a first surface facing the object side and a second surface facing the image side; The first surface of the convex structure is in at least partial contact with the image side surface of the third lens, and the second surface of the convex structure is in at least partial contact with the object side surface of the fourth lens.

17. The optical imaging lens according to claim 16, It is characterized in that The first lens, the second lens and the third lens are assembled in the lens barrel via the object side end of the lens barrel, and the fourth lens, the fifth lens, the sixth lens and the seventh lens are assembled in the lens barrel via the image side end of the lens barrel.

18. The optical imaging lens according to claim 16, It is characterized in that The lens barrel comprises a concave structure located on the outer wall of the lens barrel and concave toward the optical axis, wherein the concave structure is closer to the image side end of the lens barrel than the convex structure; The lens barrel further includes at least two reinforcing rib structures arranged at the recessed structure.

Images