Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes a lens barrel, a lens group and a spacer element group disposed in the lens barrel. Among them, the lens group sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens along the optical axis from the object side to the image side; the spacer element group includes a first spacer element and a second spacer element; the maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 10° < Semi-FOV < 20°; the inner diameter d0s of the object-side end face of the lens barrel and the inner diameter d0m of the image-side end face of the lens barrel satisfy: 1 < d0s / d0m < 1.6; the outer diameter D1s of the object-side surface of the first spacer element, the inner diameter d1s of the object-side surface of the first spacer element, the outer diameter D2s of the object-side surface of the second spacer element and the inner diameter d2s of the object-side surface of the second spacer element satisfy: 0.2 < (D1s - d1s) / (D2s - d2s) < 1; the maximum thickness CP1 of the first spacer element in the optical axis direction, the maximum thickness CP2 of the second spacer element in the optical axis direction and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 0.1 < (CP1 + CP2) / T12 < 1.1.

Description

Technical Field

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

[0002] Nowadays, with the development of production technology and the improvement of the level of material demand, optical lenses are more and more widely used in many electronic devices such as security surveillance cameras, mobile phones, vehicle-mounted imaging, etc., and people's requirements for the imaging quality of optical lenses are also getting higher and higher. Generally, increasing the number of lenses can improve the imaging quality, but the more lenses there are, the more serious the assembly stability problem will be, and the requirements for the spacer elements between the lenses will be more stringent.

[0003] For a six-piece optical lens, the assembly stability problem is still one of the main problems to be overcome. When the lenses and spacer elements are not reasonably matched, the contact strength between the spacer element and the lens is insufficient, the stress distribution in the optical imaging lens is uneven, and some elements are prone to tilt or misalignment, which seriously affects the imaging quality of the optical lens. Summary of the Utility Model

[0004] The first aspect of the present application provides such an optical imaging lens, which includes: a lens barrel, and a lens group and a spacer element 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, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the spacer element group includes: a first spacer element and a second spacer element. The first spacer element is disposed between the first lens and the second lens and at least partially contacts the image side surface of the first lens, and the second spacer element is disposed between the second lens and the third lens and at least partially contacts the image side surface of the second lens; the maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 10° < Semi-FOV < 20°; the inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 1.6; the outer diameter D1s of the object side surface of the first spacer element, the inner diameter d1s of the object side surface of the first spacer element, the outer diameter D2s of the object side surface of the second spacer element, and the inner diameter d2s of the object side surface of the second spacer element satisfy: 0.2 < (D1s - d1s) / (D2s - d2s) < 1; the maximum thickness CP1 of the first spacer element in the optical axis direction, the maximum thickness CP2 of the second spacer element in the optical axis direction, and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 0.1 < (CP1 + CP2) / T12 < 1.1.

[0005] In one embodiment, among the first lens to the sixth lens, the first lens has the largest central thickness on the optical axis; the optical imaging lens satisfies: 1 < CT1 / EP12 < 2.5; where CT1 is the central thickness of the first lens on the optical axis, and EP12 is the distance between the first spacer element and the second spacer element along the optical axis.

[0006] In one embodiment, the optical imaging lens satisfies: 0 < R2 / R3 < 1.7 and 6 < f1 / (d1m - d2s) < 12; where R2 is the radius of curvature of the image side of the first lens, R3 is the radius of curvature of the object side of the second lens, f1 is the effective focal length of the first lens, d1m is the inner diameter of the image side of the first spacer element, and d2s is the inner diameter of the object side of the second spacer element.

[0007] In one embodiment, the optical imaging lens satisfies: 0.5 < (|SAG11| + |SAG12|) / EP01 < 1.2; where SAG11 is the axial distance between the intersection of the object side of the first lens and the optical axis and the vertex of the effective radius of the object side of the first lens, SAG12 is the axial distance between the intersection of the image side of the first lens and the optical axis and the vertex of the effective radius of the image side of the first lens, and EP01 is the distance on the optical axis from the object side of the lens barrel to the object side of the first spacer element.

[0008] In one embodiment, the optical imaging lens satisfies: -2.5 < f2×N2 / D1m < -1; where f2 is the effective focal length of the second lens, N2 is the refractive index of the second lens, and D1m is the outer diameter of the image side of the first spacer element.

[0009] In one embodiment, the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side of the third lens; the optical imaging lens satisfies: 1.5 < D2m / R5 < 3.5 and 2 < D3s / R6 < 3.8; where D2m is the outer diameter of the image side of the second spacer element, R5 is the radius of curvature of the object side of the third lens, D3s is the outer diameter of the object side of the third spacer element, and R6 is the radius of curvature of the image side of the third lens.

[0010] In one embodiment, the spacer element group further includes: a fifth spacer element disposed between the fifth lens and the sixth lens and at least partially in contact with the image side of the fifth lens; the optical imaging lens satisfies: 1.2 < EP50 / (CP5 + CT6) < 3.8; where EP50 is the distance on the optical axis from the image side of the fifth spacer element to the image-side end face of the lens barrel, CP5 is the maximum thickness of the fifth spacer element along the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis.

[0011] In one embodiment, the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side surface of the third lens; the optical imaging lens satisfies: 1 < SAG31 / CT3 < 2.3 and 0.1 < SAG31 / EP23 < 1.4; where SAG31 is the axial distance between the intersection of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, CT3 is the central thickness of the third lens on the optical axis, and EP23 is the spacing distance between the second spacer element and the third spacer element along the optical axis.

[0012] In one embodiment, the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side surface of the third lens; the optical imaging lens satisfies: 1 < |f3 / (D2m + d3s)| < 3; where f3 is the effective focal length of the third lens, D2m is the outer diameter of the image side surface of the second spacer element, and d3s is the inner diameter of the object side surface of the third spacer element.

[0013] In one embodiment, the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side surface of the third lens; the optical imaging lens satisfies: 1 < V3 / V2 < 2.5 and -10 < f23 / EP23 < -1; where V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, f23 is the combined focal length of the second lens and the third lens, and EP23 is the spacing distance between the second spacer element and the third spacer element along the optical axis.

[0014] In one embodiment, the spacer element group further includes: a fourth spacer element and a fifth spacer element, the fourth spacer element is 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 the fifth spacer element is 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: 0 < EP45 / (T45 + CT4) < 2; where EP45 is the spacing distance between the fourth spacer element and the fifth spacer element along the optical axis, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis.

[0015] In one embodiment, the spacer element group further includes: a fourth spacer element 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: 0.2 < R7 / R8 < 2 and 1.5 < f4 / D4m × N4 < 3.2; where R7 is the curvature radius of the object side surface of the fourth lens, R8 is the curvature radius of the image side surface of the fourth lens, f4 is the effective focal length of the fourth lens, D4m is the outer diameter of the image side surface of the fourth spacer element, and N4 is the refractive index of the fourth lens.

[0016] In one embodiment, the spacer element group further includes: a fifth spacer element disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens; the optical imaging lens satisfies: -1 < (D5m + d5s) / f5 < 0.5; where D5m is the outer diameter of the image side surface of the fifth spacer element, d5s is the inner diameter of the object side surface of the fifth spacer element, and f5 is the effective focal length of the fifth lens.

[0017] In one embodiment, the spacer element group further includes: a third spacer element, a third auxiliary spacer element, and a third secondary auxiliary spacer element. The third spacer element is disposed between the third lens and the fourth lens and at least partially contacts the image side surface of the third lens. The third auxiliary spacer element is disposed on the image side of the third spacer element and at least partially contacts the third spacer element. The third secondary auxiliary spacer element is disposed on the image side of the third auxiliary spacer element and at least partially contacts the third auxiliary spacer element; the optical imaging lens satisfies: 0.1 < (CP3b + CP3c) / T34 < 1.3, where CP3b is the maximum thickness of the third auxiliary spacer element along the optical axis direction, CP3c is the maximum thickness of the third secondary auxiliary spacer element along the optical axis direction, and T34 is the air gap between the third lens and the fourth lens on the optical axis.

[0018] The present application provides a six-piece optical imaging lens, whose maximum semi-field angle Semi-FOV satisfies: 10° < Semi-FOV < 20° and the inner diameter d0s of the object side end face of the lens barrel and the inner diameter d0m of the image side end face of the lens barrel satisfy: 1 < d0s / d0m < 1.6. The inner diameter of the object side end face of the lens barrel is greater than the inner diameter of the image side end face. Assembly instability problems are likely to occur at the first lens and the second lens. The present application adjusts the inner and outer diameters of the object side surfaces of the first spacer element and the second spacer element to satisfy 0.2 < (D1s - d1s) / (D2s - d2s) < 1, so that the bearing strengths of the first spacer element and the second spacer element with the first lens and the second lens respectively are sufficient, ensuring uniform pressure conduction during assembly, and preventing the elements in the entire optical imaging lens from tilting or misaligning, thereby improving the imaging quality; at the same time, the present application reasonably sets the thicknesses of the first spacer element and the second spacer element and the air gap between the first lens and the second lens on the optical axis, and satisfies 0.1 < (CP1 + CP2) / T12 < 1.1, which is beneficial to enhancing the structural strengths of the first spacer element and the second spacer element, and adjusting the air gap size between the first lens and the second lens, effectively improving the assembly stability and the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1A schematic diagram showing a structural arrangement diagram of an optical imaging lens according to the present application and some parameters;

[0021] Figure 2A A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0022] Figure 2B A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

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

[0024] FIG. 3A to FIG. 3C The astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens according to Embodiments 1 to 3 of the present application are respectively shown;

[0025] Figure 4A A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0026] Figure 4B A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0027] Figure 4C A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0028] FIG. 5A to FIG. 5C The astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lenses according to Embodiments 4 to 6 of the present application are respectively shown;

[0029] Fig. 6A A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0030] Figure 6B A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0031] Figure 6C A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown;

[0032] FIG. 7A to FIG. 7C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lenses according to Examples 7 to 9 of the present application are respectively shown. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 spacer elements in the 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, spacer elements, etc. of the embodiment.

[0040] 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 element of an optical imaging lens of the present application are shown as examples to facilitate a better understanding of the present invention. Figure 1 As shown, D1s is the outer diameter of the object side surface of the first spacing element, D2s is the outer diameter of the object side surface of the second spacing element, D3s is the outer diameter of the object side surface of the third spacing element, d1s is the inner diameter of the object side surface of the first spacing element, d2s is the inner diameter of the object side surface of the second spacing element, d3s is the inner diameter of the object side surface of the third spacing element, d5s is the inner diameter of the object side surface of the fifth spacing element, d0s is the inner diameter of the object side end surface of the lens barrel, d0m is the inner diameter of the image side end surface of the lens barrel, d1m is the inner diameter of the image side surface of the first spacing element, CP1 is the maximum thickness of the first spacing element along the optical axis, CP2 is the maximum thickness of the second spacing element along the optical axis, CP5 is the maximum thickness of the fifth spacing element along the optical axis, and CP3b is the maximum thickness of the auxiliary spacing element along the optical axis. The maximum thickness in the direction of the optical axis, CP3c is the maximum thickness of the secondary auxiliary spacer element along the direction of the optical axis, EP01 is the distance from the object side of the lens barrel to the object side of the first spacer element on the optical axis, EP12 is the distance between the first spacer element and the second spacer element along the optical axis, EP23 is the distance between the second spacer element and the third spacer element along the optical axis, EP45 is the distance between the fourth spacer element and the fifth spacer element along the optical axis, EP50 is the distance from the image side of the fifth spacer element to the image side end face of the lens barrel on the optical axis, D1m is the outer diameter of the image side of the first spacer element, D2m is the outer diameter of the image side of the second spacer element, D4m is the outer diameter of the image side of the fourth spacer element, D5m is the outer diameter of the image side of the fifth spacer element, D3m is the outer diameter of the image side of the third spacer element, and d3m is the inner diameter of the image side of the third spacer element.

[0041] The optical imaging lens according to the exemplary embodiment of the present application may include a lens barrel, a lens group and a spacer element group arranged in the lens barrel. The lens group may include: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in order from the object side to the image side along the optical axis. Any two adjacent lenses of the five lenses may have a spacing distance between them.

[0042] In an exemplary embodiment, the first lens may have positive optical power, the second lens may have negative optical power, the third lens may have positive optical power or negative optical power, the fourth lens may have positive optical power, the fifth lens may have positive optical power or negative optical power, and the sixth lens may have negative optical power.

[0043] In an exemplary embodiment, both the object-side surface and the image-side surface of the first lens are convex surfaces.

[0044] In an exemplary embodiment, both the object-side surface and the image-side surface of the second lens are concave surfaces.

[0045] In an exemplary embodiment, the object-side surface of the third lens is convex, and the image-side surface is concave.

[0046] In an exemplary embodiment, the spacer element group of the optical imaging lens may include at least one of a first spacer element, a second spacer element, a third spacer element, a fourth spacer element, and a fifth spacer element. The first spacer element 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 element 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 element 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 element 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 element 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.

[0047] It should be understood that the present application does not specifically limit the number of spacer elements, and any number of spacer elements may be included between any two lenses, and the entire optical imaging lens may also include any number of spacer elements. The spacer element helps the optical imaging lens intercept excess refractive and reflective light paths and reduce stray light and ghosting. Adding auxiliary support between the spacer element and the lens barrel is helpful to improve the problems of poor assembly stability and low performance yield caused by large step differences between lenses.

[0048] In an exemplary embodiment, the number of the spacing elements between the second lens and the third lens of the optical imaging lens is three, which are a second spacing element, a second auxiliary spacing element, and a second auxiliary spacing element. The second spacing element is at least partially in contact with the image side surface of the second lens; the second auxiliary spacing element is disposed on the image side of the second spacing element and is at least partially in contact with the second spacing element; and the second auxiliary spacing element is disposed on the image side of the second auxiliary spacing element and is at least partially in contact with the second auxiliary spacing element.

[0049] In an exemplary embodiment, the number of the spacing elements between the third lens and the fourth lens of the optical imaging lens is three, which are a third spacing element, a third auxiliary spacing element, and a third auxiliary spacing element. The third spacing element is at least partially in contact with the image side surface of the third lens; the third auxiliary spacing element is disposed on the image side of the third spacing element and is at least partially in contact with the third spacing element; and the third auxiliary spacing element is disposed on the image side of the third auxiliary spacing element and is at least partially in contact with the third auxiliary spacing element.

[0050] In an exemplary embodiment, the number of the spacers between the fourth lens and the fifth lens of the optical imaging lens is three, namely, a fourth spacer, a fourth auxiliary spacer, and a fourth secondary auxiliary spacer. The fourth spacer is at least partially in contact with the image side surface of the fourth lens; the fourth auxiliary spacer is disposed on the image side of the fourth spacer and is at least partially in contact with the fourth spacer; and the fourth secondary auxiliary spacer is disposed on the image side of the fourth auxiliary spacer and is at least partially in contact with the fourth auxiliary spacer.

[0051] In an exemplary embodiment, the number of the spacers between the fifth lens and the sixth lens of the optical imaging lens is three, which are a fifth spacer, a fifth auxiliary spacer, and a fifth secondary auxiliary spacer. The fifth spacer is at least partially in contact with the image side surface of the fifth lens; the fifth auxiliary spacer is disposed on the image side of the fifth spacer and is at least partially in contact with the fifth spacer; and the fifth secondary auxiliary spacer is disposed on the image side of the fifth auxiliary spacer and is at least partially in contact with the fifth auxiliary spacer.

[0052] In an exemplary embodiment, the optical imaging lens may further include an aperture for limiting the light beam to further improve the imaging quality of the optical lens. Exemplarily, the aperture may be disposed on the object side of the first lens. The aperture is conducive to converging the light entering the optical lens, reducing the maximum aperture of the optical lens, and reducing the assembly sensitivity of the system. However, it should be noted that the position of the aperture disclosed herein is only an example and not a limitation; in alternative embodiments, the aperture may also be disposed at other positions according to actual needs.

[0053] In an exemplary embodiment, the maximum semi-field of view Semi-FOV of the optical imaging lens according to the present application satisfies: 10° < Semi-FOV < 20°, and more specifically, Semi-FOV further satisfies: 13° < Semi-FOV < 18°.

[0054] In an exemplary embodiment, the inner diameter d0s of the object-side end face of the lens barrel and the inner diameter d0m of the image-side end face of the lens barrel satisfy: 1 < d0s / d0m < 1.6.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application satisfies: 0.2 < (D1s - d1s) / (D2s - d2s) < 1, where D1s is the outer diameter of the object-side face of the first spacer element, d1s is the inner diameter of the object-side face of the first spacer element, D2s is the outer diameter of the object-side face of the second spacer element, and d2s is the inner diameter of the object-side face of the second spacer element.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application satisfies: 0.1 < (CP1 + CP2) / T12 < 1.1, where CP1 is the maximum thickness of the first spacer element in the optical axis direction, CP2 is the maximum thickness of the second spacer element in the optical axis direction, and T12 is the air gap between the first lens and the second lens on the optical axis.

[0057] An optical imaging lens according to an exemplary embodiment of the present application includes: a lens barrel, and a lens group and a spacer element 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, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The spacer element group includes: a first spacer element disposed between the first lens and the second lens and at least partially contacting the image side surface of the first lens, and a second spacer element disposed between the second lens and the third lens and at least partially contacting the image side surface of the second lens. The maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 10° < Semi-FOV < 20°, and the inner diameter d0s of the object-side end surface of the lens barrel and the inner diameter d0m of the image-side end surface of the lens barrel satisfy: 1 < d0s / d0m < 1.6. At this time, the inner diameter of the object-side end surface of the lens barrel is greater than that of the image-side end surface, and assembly instability is likely to occur at the first lens and the second lens. In the present application, by adjusting the inner and outer diameters of the object-side surfaces of the first spacer element and the second spacer element to satisfy 0.2 < (D1s - d1s) / (D2s - d2s) < 1, the bearing strengths of the first spacer element and the second spacer element with the first lens and the second lens are sufficient, ensuring uniform pressure conduction during assembly, so that the elements of the entire optical imaging lens do not tilt or misalign, thereby improving the imaging quality. At the same time, the thicknesses of the first spacer element and the second spacer element and the air gaps between the first lens and the second lens on the optical axis are reasonably set and satisfy 0.1 < (CP1 + CP2) / T12 < 1.1, which is beneficial to enhancing the structural strengths of the first spacer element and the second spacer element, and adjusting the air gap sizes between the first lens and the second lens, effectively improving the assembly stability and the yield rate.

[0058] The optical imaging lens according to an exemplary embodiment of the present application satisfies 10° < Semi-FOV < 20°, 1 < d0s / d0m < 1.6, 0.2 < (D1s - d1s) / (D2s - d2s) < 1, and 0.1 < (CP1 + CP2) / T12 < 1.1, ensuring the stability of the overall lens structure. When dealing with mechanical reliability tests, the internal stress level distribution of the lens is more uniform, and the deformation amount of the lens is smaller, so that the change amounts of the main evaluation indexes such as MTF, f, and FFL are smaller, and the failure risk is lower. Specifically, MTF (i.e., Modulation Transfer Function) represents the modulation transfer function, and MTF is a quantitative evaluation index for the optical performance of the lens, used to describe the efficiency of light transmitted at different spatial frequencies; f represents the effective focal length of the optical imaging lens; FFL represents the distance from the object-side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis. The following further illustrates the effect that the above technical solution of the present application has in ensuring the stability of the overall lens structure in combination with Table 1-1 and Table 1-2.

[0059] Tables 1-1 and 1-2 show the changes in f, FFL, and MTF under different fields of view of the optical imaging lens of the exemplary embodiment of the present application before and after two rounds of micro-drop tests, that is, the change is the difference between the values ​​after the test and before the test. In Tables 1-1 and 1-2, negative numbers indicate that the values ​​after the test are smaller than the values ​​before the test, and positive numbers indicate that the values ​​after the test are larger than the values ​​before the test. In Tables 1-1 and 1-2, the units of the changes in f and FFL are in millimeters (mm), and the units of the changes in MTF are in %. More specifically, the changes in MTF are the changes in MTF at a spatial frequency of 70lp / mm. In Tables 1-1 and 1-2, S represents the sagittal direction, T represents the meridian direction, and the center, 0.3F, 0.5F, 0.7F, 0.8F, and 0.9F represent different fields of view, respectively.

[0060] Specifically, the micro-drop test can be, for example, a simulated mobile phone micro-drop test, and the test content can be set, for example: drop height 10 cm, the number of drops in each round is 500 times on each of the six sides, 5000 times on the front and back sides, totaling 13,000 times; two rounds of tests are stimulated with a total of 26,000 drops.

[0061] All data in Table 1-1 and Table 1-2 are simulation data, not actual data. In addition, the three calibrated lens samples were not subjected to simulation tests to determine whether the test environment has changed.

[0062] Analysis of the data in Table 1-1 and Table 1-2 shows that the data of the 10 lens samples after the micro-drop test in Table 1-1 and Table 1-2 are basically the same as the data of the 3 lens samples that were calibrated (without micro-drop test). Before and after the two rounds of micro-drop tests, the changes in the MTF of the 10 lenses are within ±5%, and the changes in f and FFL are within ±0.01%, which meets the design requirements. This shows that in the micro-drop test, the optical imaging lens of the present application has good stability and a small internal deformation of the lens, which makes the changes in the main evaluation indicators such as MTF, f, and FFL small, and the risk of failure is low.

[0063]

[0064]

[0065] Table 1-1

[0066]

[0067] Table 1-2

[0068] In an exemplary embodiment, among the first lens to the sixth lens, the first lens has the largest central thickness on the optical axis and satisfies: 1 < CT1 / EP12 < 2.5, where CT1 is the central thickness of the first lens on the optical axis, and EP12 is the axial distance between the first spacer element and the second spacer element. Satisfying 1 < CT1 / EP12 < 2.5 can effectively control the ratio of the central thickness to the edge thickness of the first lens, improve the formability of the first lens, avoid problems such as surface shrinkage of the first lens, and obtain the best optical performance.

[0069] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0 < R2 / R3 < 1.7 and 6 < f1 / (d1m - d2s) < 12, where R2 is the radius of curvature of the image side of the first lens, R3 is the radius of curvature of the object side of the second lens, f1 is the effective focal length of the first lens, d1m is the inner diameter of the image side of the first spacer element, and d2s is the inner diameter of the object side of the second spacer element. Satisfying 0 < R2 / R3 < 1.7 and 6 < f1 / (d1m - d2s) < 12 is beneficial to controlling the chromatic aberration generated by the first lens and the second lens. Adjusting the effective focal length of the first lens, the radius of curvature of the image side of the first lens, and the radius of curvature of the object side of the second lens can reduce the deflection angle of light, weaken dispersion, and weaken the purple edge phenomenon at the imaging edge. Adjusting the sizes of the first spacer element and the second spacer element can reduce the size of the entrance pupil and inhibit the formation of chromatic aberration.

[0070] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.5 < (|SAG11| + |SAG12|) / EP01 < 1.2, where SAG11 is the axial distance between the intersection of the object side of the first lens and the optical axis and the vertex of the effective radius of the object side of the first lens, SAG12 is the axial distance between the intersection of the image side of the first lens and the optical axis and the vertex of the effective radius of the image side of the first lens, and EP01 is the distance on the optical axis from the object side of the lens barrel to the object side of the first spacer element. Satisfying 0.5 < (|SAG11| + |SAG12|) / EP01 < 1.2 can effectively ensure the supporting effect of the lens barrel on the lens and protect the optical effective surface of the first lens at the same time. The lens barrel also limits the light entering the optical imaging lens and effectively restricts the generation of stray light.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.5 < f2×N2 / D1m < -1, where f2 is the effective focal length of the second lens, N2 is the refractive index of the second lens, and D1m is the outer diameter of the image side surface of the first spacer element. Satisfying -2.5 < f2×N2 / D1m < -1 can effectively improve the influence of the second lens on the chromatic aberration of the optical imaging lens. The adjustment of its refractive index and effective focal length effectively suppresses the formation of light dispersion and purple fringing. The adjustment of the outer diameter of the first spacer element can reduce the illuminance and indirectly suppress the generation of chromatic aberration.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < D2m / R5 < 3.5 and 2 < D3s / R6 < 3.8, where D2m is the outer diameter of the image side surface of the second spacer element, R5 is the curvature radius of the object side surface of the third lens, D3s is the outer diameter of the object side surface of the third spacer element, and R6 is the curvature radius of the image side surface of the third lens. Satisfying 1.5 < D2m / R5 < 3.5 and 2 < D3s / R6 < 3.8 can effectively suppress the stray light that is difficult to improve generated by internal reflection of the lens. The adjustment of the curvature radius of the third lens can adjust the angle of light refraction and prevent complex reflections that are difficult to improve inside the lens. The adjustment of the second spacer element and the third spacer element can block some of the complex stray light generated, and generally play a role in improving the imaging quality.

[0073] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.2 < EP50 / (CP5 + CT6) < 3.8, where EP50 is the distance on the optical axis from the image side surface of the fifth spacer element to the image side end surface of the lens barrel, CP5 is the maximum thickness of the fifth spacer element along the optical axis direction, and CT6 is the central thickness of the sixth lens on the optical axis. Satisfying 1.2 < EP50 / (CP5 + CT6) < 3.8 can adjust the structural strength of the sixth lens and the fifth spacer element, enhance the assembly stability of the lens, make the pressure conduction uniform during assembly, and prevent the elements from tilting or shifting.

[0074] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1 < SAG31 / CT3 < 2.3 and 0.1 < SAG31 / EP23 < 1.4, where SAG31 is the axial distance between the intersection of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, CT3 is the central thickness of the third lens on the optical axis, and EP23 is the spacing distance between the second spacer element and the third spacer element along the optical axis. Satisfying 1 < SAG31 / CT3 < 2.3 and 0.1 < SAG31 / EP23 < 1.4 can improve the stray light generated by the third lens. Controlling the central thickness CT3 of the third lens and the axial spacing SAG31 of the effective diameter surface of its image side surface can reduce the degree of light refraction, greatly reduce the probability of generating stray light, and controlling the spacing distance between the second spacer element and the third spacer element can effectively adjust the edge thickness of the third lens, reduce the generation of internal reflection stray light, and improve the imaging quality.

[0075] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1 < |f3 / (D2m + d3s)| < 3, where f3 is the effective focal length of the third lens, D2m is the outer diameter of the image side surface of the second spacer element, and d3s is the inner diameter of the object side surface of the third spacer element. Satisfying 1 < |f3 / (D2m + d3s)| < 3 can improve the stray light generated by the third lens. Adjusting the effective focal length of the third lens can reduce the refraction angle of light, reduce the probability of generating complex stray light that is difficult to improve, and adjusting the outer diameter of the image side surface of the second spacer element and the inner diameter of the object side surface of the third spacer element can block a part of the internal reflection stray light of the lens and improve the imaging quality.

[0076] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1 < V3 / V2 < 2.5 and -10 < f23 / EP23 < -1, where V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, f23 is the combined focal length of the second lens and the third lens, and EP23 is the spacing distance between the second spacer element and the third spacer element along the optical axis. Satisfying 1 < V3 / V2 < 2.5 and -10 < f23 / EP23 < -1 can effectively improve the influence of the chromatic aberration of the second lens and the third lens on the optical imaging lens. Adjusting the Abbe numbers and the combined focal length of the second lens and the third lens effectively suppresses the formation of light dispersion and purple fringing. Adjusting the spacing between the second spacer element and the third spacer element can reduce the illuminance and indirectly suppress the generation of chromatic aberration.

[0077] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0 < EP45 / (T45 + CT4) < 2, where EP45 is the spacing distance between the fourth spacer element and the fifth spacer element along the optical axis direction, T45 is the air spacing between the fourth lens and the fifth lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis. Satisfying 0 < EP45 / (T45 + CT4) < 2 can effectively improve the structural strength of the lens, enhance the assembly stability of the lens, make the pressure conduction uniform during assembly, prevent the elements from tilting or shifting, and controlling the air gap between the fourth lens and the fifth lens can improve the yield rate and the imaging quality of the lens.

[0078] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.2 < R7 / R8 < 2 and 1.5 < f4 / D4m × N4 < 3.2, where R7 is the curvature radius of the object side surface of the fourth lens, R8 is the curvature radius of the image side surface of the fourth lens, f4 is the effective focal length of the fourth lens, D4m is the outer diameter of the image side surface of the fourth spacer element, and N4 is the refractive index of the fourth lens. Satisfying 0.2 < R7 / R8 < 2 and 1.5 < f4 / D4m × N4 < 3.2 can improve the stray light generated by the fourth lens. Adjusting the effective focal length and the curvature radius of the fourth lens can reduce the refraction angle of the light rays and the probability of generating complex stray light that is difficult to improve. Adjusting the outer diameter of the image side surface of the fourth spacer element can block a part of the internal reflection stray light of the lens and improve the imaging quality.

[0079] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -1 < (D5m + d5s) / f5 < 0.5, where D5m is the outer diameter of the image side surface of the fifth spacer element, d5s is the inner diameter of the object side surface of the fifth spacer element, and f5 is the effective focal length of the fifth lens. Satisfying -1 < (D5m + d5s) / f5 < 0.5 can improve the stray light generated by the fifth lens. Adjusting the effective focal length of the fifth lens can reduce the refraction angle of the light rays and the probability of generating complex stray light that is difficult to improve. Adjusting the inner and outer diameters of the fifth spacer element can block a part of the internal reflection stray light of the lens and improve the imaging quality.

[0080] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1<(CP3b+CP3c) / T34<1.3, wherein CP3b is the maximum thickness of the auxiliary spacer element along the optical axis, CP3c is the maximum thickness of the secondary auxiliary spacer element along the optical axis, and T34 is the air gap between the third lens and the fourth lens on the optical axis. Satisfying 0.1<(CP3b+CP3c) / T34<1.3 can effectively improve the structural strength of the spacer element, enhance the assembly stability of the lens, make the pressure transmission during assembly uniform, ensure that each element does not tilt or deviate, and control the air gap between the third lens and the fourth lens can improve the yield and improve the imaging quality of the lens.

[0081] In example embodiments, the fourth lens may have positive power, and the sixth lens may have negative power.

[0082] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the sixth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side and image side of all lenses from the first lens to the sixth lens are aspherical mirror surfaces.

[0083] In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0084] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the six lenses mentioned above. By reasonably allocating the focal length, surface shape and arrangement of each spacing element 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 optical imaging lens. However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0085] The following further describes specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments with reference to the accompanying drawings. Figures 2A to 3CDescribe the optical imaging lens according to Embodiment 1 to Embodiment 3 of the present application; refer to FIG. 4A to FIG. 5C Describe the optical imaging lens according to Embodiment 4 to Embodiment 6 of the present application; refer to 6A to 7C Optical imaging lenses according to Embodiments 7 to 9 of the present application are described.

[0086] Example 1

[0087] 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, a lens group, and a spacer element group. The optical imaging lens 1001 also includes a stop STO (not shown) disposed on the object side of the first lens.

[0088] like Figure 2A As 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 and a sixth lens E6. 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 optical imaging lens 1001 also includes a filter (not shown) for correcting color deviation, and the filter has an object-side surface S13 and an image-side surface S14. Light from an object sequentially passes through each surface S1 to S14 and is finally imaged on an imaging surface (not shown).

[0089] Table 2-1 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 and effective focal length are all millimeters (mm).

[0090]

[0091] Table 2-1

[0092] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0093]

[0094] 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 2-1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Tables 2-2 and 2-3 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, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A76, A77, A8, A59, A60, A80, A81, A90, A91, A10, A111, A121, A131, A142, A153, A164, A175, A18, A19, A20, A21, A32, A33, A44, A45, A59, A60, A71, A8 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0095] Face number A4 A6 A8 A10 A12 A14 A16 S1 -3.1289E-04 -5.3759E-05 3.0150E-05 -1.6305E-05 5.2740E-06 -1.1353E-06 1.6550E-07 S2 5.7185E-03 -2.4793E-03 4.0571E-04 7.8082E-06 -1.3000E-05 2.1536E-06 -1.8166E-07 S3 8.6763E-03 -3.8012E-03 6.7525E-04 -7.4954E-06 -1.5433E-05 2.6560E-06 -2.2359E-07 S4 1.4136E-02 -5.8613E-03 -3.0393E-04 9.3998E-04 -3.5966E-04 7.9405E-05 -1.1796E-05 S5 -2.2162E-03 7.4463E-04 -3.1866E-03 2.1604E-03 -8.5806E-04 2.5200E-04 -5.7502E-05 S6 -2.5449E-02 8.3650E-03 -3.9285E-03 1.7139E-03 -6.9759E-04 2.4628E-04 -6.9251E-05 S7 -8.8911E-03 -5.0160E-04 2.3119E-03 -2.9047E-03 2.3107E-03 -1.2672E-03 4.9273E-04 S8 -2.2600E-03 -3.0074E-04 5.4786E-04 -4.5663E-04 2.6188E-04 -1.0359E-04 2.7676E-05 S9 1.3343E-02 -4.0466E-03 7.7016E-04 1.7425E-03 -2.8974E-03 2.3843E-03 -1.2614E-03 S10 -3.3706E-02 4.3199E-02 -3.3248E-02 1.9006E-02 -7.8947E-03 2.2550E-03 -3.8313E-04 S11 -8.1944E-02 5.2343E-02 -3.6498E-02 2.1691E-02 -1.0412E-02 3.9444E-03 -1.1651E-03 S12 -4.1611E-02 9.2785E-03 -1.7175E-03 -9.7737E-05 2.2224E-04 -9.1587E-05 2.2568E-05

[0096] Table 2-2

[0097] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.6421E-08 1.0933E-09 -4.6768E-11 1.1614E-12 -1.2719E-14 0.0000E+00 0.0000E+00 S2 8.7797E-09 -2.3255E-10 2.6362E-12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.0864E-08 -2.9728E-10 3.6200E-12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.1880E-06 -7.6905E-08 2.8597E-09 -4.6161E-11 0.0000E+00 0.0000E+00 0.0000E+00 S5 9.9926E-06 -1.2774E-06 1.1535E-07 -6.9234E-09 2.4675E-10 -3.9365E-12 0.0000E+00 S6 1.4578E-05 -2.2119E-06 2.3340E-07 -1.6211E-08 6.6527E-10 -1.2210E-11 0.0000E+00 S7 -1.3773E-04 2.7744E-05 -3.9890E-06 3.9904E-07 -2.6374E-08 1.0349E-09 -1.8251E-11 S8 -4.9092E-06 5.5556E-07 -3.6238E-08 1.0307E-09 0.0000E+00 0.0000E+00 0.0000E+00 S9 4.5886E-04 -1.1747E-04 2.1174E-05 -2.6334E-06 2.1518E-07 -1.0401E-08 2.2544E-10 S10 1.1193E-05 1.2630E-05 -3.6071E-06 5.2127E-07 -4.4489E-08 2.1353E-09 -4.4674E-11 S11 2.6531E-04 -4.5901E-05 5.9045E-06 -5.4515E-07 3.4009E-08 -1.2781E-09 2.1751E-11 S12 -3.7579E-06 4.3309E-07 -3.3955E-08 1.7062E-09 -4.7363E-11 4.0460E-13 6.5281E-15

[0098] Table 2-3

[0099] Table 3 shows the values ​​of the maximum half field of view angle Semi-FOV, effective focal length f, combined focal length f23, and vector heights SAG11, SAG12, and SAG31 of the optical imaging lens 1001.

[0100] parameter Semi-FOV(°) f(mm) f23(mm) SAG11(mm) SAG12(mm) SAG31(mm) Numeric 16.0043 14.2235 -7.2548 1.3856 -0.3295 0.8546

[0101] Table 3

[0102] like Figure 2AAs shown, the optical imaging lens 1001 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, a third auxiliary spacer P3b, a third auxiliary spacer P3c, a fourth spacer P4 and a fifth spacer P5. The first spacer P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens. The third auxiliary spacer P3b and the third auxiliary spacer P3c are placed between the third spacer and the fourth lens, the object side surface of the third auxiliary spacer P3b is in at least partial contact with the third spacer, and the object side surface of the third auxiliary spacer P3c is in at least partial contact with the third auxiliary spacer P3b. Table 4 shows the basic parameters of the spacer element and the lens barrel of the optical imaging lens 1001, and the units of the parameters in Table 4 are all millimeters (mm). The above-mentioned spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 1001.

[0103] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 7.1718 7.1718 9.0000 9.0000 6.1643 8.9000 8.9000 5.6782 5.6782 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.8000 8.8000 8.4000 5.5905 8.3000 9.3060 7.2771 2.4264 0.0220 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.7110 0.0220 0.9468 0.9133 0.0220 1.9895 1.1063 0.0220 /

[0104] Table 4

[0105] Example 2

[0106] 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.

[0107] like Figure 2B As shown, the optical imaging lens 1002 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 1002 also includes a stop STO (not shown) disposed on the object side of the first 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 2-1 to 2-3 and 3, and will not be described in detail.

[0108] like Figure 2BAs shown, the optical imaging lens 1002 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, an auxiliary spacer P3b, a secondary auxiliary spacer P3c, a fourth spacer P4, and a fifth spacer P5. The first spacer P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens. The auxiliary spacer P3b and the secondary auxiliary spacer P3c are placed between the third spacer and the fourth lens, the object side surface of the auxiliary spacer P3b is in at least partial contact with the third spacer, and the object side surface of the secondary auxiliary spacer P3c is in at least partial contact with the auxiliary spacer P3b. Table 5 shows the basic parameters of the spacer element 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 spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 1002.

[0109] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 7.3472 7.3472 8.6000 8.6000 6.4362 8.5000 8.5000 5.3908 5.3908 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.4000 8.4000 8.0000 5.8723 7.9000 9.3060 7.2771 2.4266 0.0220 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.7110 0.0220 0.8356 0.9133 0.0220 1.9897 1.2798 0.0220 /

[0110] Table 5

[0111] Example 3

[0112] Figure 2C A schematic structural diagram of an optical imaging lens 1003 according to Embodiment 3 of the present application is shown.

[0113] like Figure 2C As shown, the optical imaging lens 1003 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 1003 also includes a stop STO (not shown) disposed on the object side of the first 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 2-1 to 2-3 and 3, and will not be described in detail.

[0114] like Figure 2CAs shown, the optical imaging lens 1003 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, an auxiliary spacer P3b, a secondary auxiliary spacer P3c, a fourth spacer P4, and a fifth spacer P5. The first spacer P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens. The auxiliary spacer P3b and the secondary auxiliary spacer P3c are placed between the third spacer and the fourth lens, the object side surface of the auxiliary spacer P3b is in at least partial contact with the third spacer, and the object side surface of the secondary auxiliary spacer P3c is in at least partial contact with the auxiliary spacer P3b. Table 6 shows the basic parameters of the spacer element 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 spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 1003.

[0115] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 6.7621 6.7621 9.4000 9.4000 6.0192 9.3000 9.3000 5.4382 5.4382 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 9.2000 9.2000 8.8000 5.4457 8.7000 9.6681 7.2771 2.4264 0.0220 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.7110 0.0220 1.1109 0.9133 0.0220 1.9897 0.8217 0.0220 /

[0116] Table 6

[0117] Figure 3A Astigmatism curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent meridional image curvature and sagittal image curvature. Figure 3B The distortion curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent the distortion values ​​corresponding to different field angles. Figure 3C The magnification chromatic aberration curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 3A to FIG. 3C It can be seen that the optical imaging lenses provided in Examples 1 to 3 can achieve good imaging quality.

[0118] Example 4

[0119] 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, a lens group, and a spacer element group. The optical imaging lens 2001 also includes a stop STO (not shown) disposed on the object side of the first lens.

[0120] like Figure 4AAs 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 and a sixth lens E6. 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 optical imaging lens 1001 also includes a filter (not shown) for correcting color deviation, and the filter has an object side surface S13 and an image side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is finally imaged on an imaging surface (not shown).

[0121] Table 7 shows the basic parameters of the lens group of the optical imaging lens 2001 of Example 4, wherein the units of the radius of curvature, thickness / distance and effective focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0122]

[0123]

[0124] Table 7

[0125] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.2386E-04 -6.5872E-04 6.5117E-04 -3.9916E-04 1.6111E-04 -4.5071E-05 8.9785E-06 S2 1.7846E-02 -1.0626E-02 3.9472E-03 -9.1206E-04 1.2201E-04 -5.4854E-06 -1.1662E-06 S3 2.7376E-02 -2.0415E-02 8.6253E-03 -2.2007E-03 3.2660E-04 -1.7675E-05 -3.2578E-06 S4 3.9458E-02 -3.5000E-02 1.2163E-02 1.0424E-03 -2.9349E-03 1.4451E-03 -4.1641E-04 S5 1.4742E-02 -1.3506E-02 -1.0249E-03 7.1146E-03 -5.1505E-03 2.0703E-03 -5.4935E-04 S6 -2.6474E-02 2.2126E-02 -1.8035E-02 1.2528E-02 -6.8452E-03 2.8312E-03 -8.8122E-04 S7 -1.2373E-02 -1.5527E-03 4.0734E-03 -3.9643E-03 2.3430E-03 -8.9907E-04 2.2214E-04 S8 -5.0757E-03 -1.2977E-03 1.9336E-03 -1.7409E-03 1.0386E-03 -4.0569E-04 1.0075E-04 S9 3.6727E-02 -3.1920E-02 3.5272E-02 -3.2445E-02 2.2353E-02 -1.1324E-02 4.2273E-03 S10 2.2781E-02 -1.8282E-02 2.7643E-02 -2.6940E-02 1.7509E-02 -7.9528E-03 2.5999E-03 S11 -4.3500E-02 1.2387E-02 -1.0018E-04 -3.3448E-03 2.4461E-03 -1.0072E-03 2.7798E-04 S12 -4.7389E-02 1.4660E-02 -5.7957E-03 2.2814E-03 -8.0771E-04 2.3100E-04 -4.9372E-05

[0126] Table 8-1

[0127] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.2908E-06 1.3418E-07 -9.9832E-09 5.1787E-10 -1.7776E-11 3.6258E-13 -3.3253E-15 S2 2.7142E-07 -2.8652E-08 1.8254E-09 -7.1769E-11 1.6100E-12 -1.5807E-14 0.0000E+00 S3 8.7054E-07 -1.0084E-07 6.9823E-09 -2.9702E-10 7.1896E-12 -7.6050E-14 0.0000E+00 S4 8.1246E-05 -1.1223E-05 1.1070E-06 -7.6675E-08 3.5578E-09 -9.9592E-11 1.2738E-12 S5 1.0217E-04 -1.3621E-05 1.3029E-06 -8.7690E-08 3.9591E-09 -1.0799E-10 1.3484E-12 S6 2.0611E-04 -3.5945E-05 4.5915E-06 -4.1583E-07 2.5207E-08 -9.1476E-10 1.4986E-11 S7 -3.1931E-05 1.2786E-06 4.4577E-07 -9.8117E-08 9.4835E-09 -4.7125E-10 9.7668E-12 S8 -1.3747E-05 1.3538E-07 3.2065E-07 -6.1739E-08 5.6856E-09 -2.6805E-10 5.1024E-12 S9 -1.1646E-03 2.3549E-04 -3.4419E-05 3.5305E-06 -2.4060E-07 9.7677E-09 -1.7854E-10 S10 -6.2031E-04 1.0809E-04 -1.3591E-05 1.1991E-06 -7.0336E-08 2.4600E-09 -3.8776E-11 S11 -5.4315E-05 7.6552E-06 -7.7637E-07 5.5387E-08 -2.6412E-09 7.5606E-11 -9.8219E-13 S12 7.4594E-06 -7.4946E-07 4.3994E-08 -7.7833E-10 -7.4933E-11 5.2028E-12 -1.0391E-13

[0128] Table 8-2

[0129] Table 9 shows the values ​​of the maximum half field of view angle Semi-FOV, effective focal length f, combined focal length f23, and vector heights SAG11, SAG12, and SAG31 of the optical imaging lens 2001.

[0130] parameter Semi-FOV(°) f(mm) f23(mm) SAG11(mm) SAG12(mm) SAG31(mm) Numeric 16.0308 14.2007 -5.9038 1.5443 -0.2209 1.1831

[0131] Table 9

[0132] like Figure 4AAs shown, the optical imaging lens 2001 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fifth spacer P5, a fifth auxiliary spacer P5b, and a fifth secondary auxiliary spacer P5c. The first spacer P1 is disposed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is disposed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is disposed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the fifth auxiliary spacer P5b and the fifth secondary auxiliary spacer P5c are disposed between the fifth spacer and the sixth lens, the object side surface of the fifth auxiliary spacer P5b is in at least partial contact with the fifth spacer, and the object side surface of the fifth secondary auxiliary spacer P5c is in at least partial contact with the fifth auxiliary spacer P5b. Table 10 shows the basic parameters of the spacer element 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 spacer element can block the entry of extra external light, make the lens and the lens barrel better support each other, and enhance the structural stability of the optical imaging lens 2001.

[0133] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 7.2291 7.2291 9.0000 9.0000 6.1643 8.9000 8.9000 7.2315 7.3099 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.2036 8.0211 8.4651 5.8607 8.3651 9.3060 7.2561 2.3812 0.0220 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.7564 0.0220 0.9789 1.1245 0.0220 2.5352 / / /

[0134] Table 10

[0135] Example 5

[0136] Figure 4B A schematic structural diagram of an optical imaging lens 2002 according to Embodiment 5 of the present application is shown.

[0137] like Figure 4B As shown, the optical imaging lens 2002 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 2002 also includes a stop STO (not shown) disposed on the object side of the first 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.

[0138] like Figure 4BAs shown, the optical imaging lens 2002 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fifth spacer P5, a fifth auxiliary spacer P5b, and a fifth secondary auxiliary spacer P5c. The first spacer P1 is disposed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is disposed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is disposed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the fifth auxiliary spacer P5b and the fifth secondary auxiliary spacer P5c are disposed between the fifth spacer and the sixth lens, the object side surface of the fifth auxiliary spacer P5b is in at least partial contact with the fifth spacer, and the object side surface of the fifth secondary auxiliary spacer P5c is in at least partial contact with the fifth auxiliary spacer P5b. Table 11 shows the basic parameters of the spacer element and the lens barrel of the optical imaging lens 2002, and the units of the parameters in Table 11 are all millimeters (mm). The above-mentioned spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 2002.

[0139]

[0140]

[0141] Table 11

[0142] Example 6

[0143] Figure 4C A schematic structural diagram of an optical imaging lens 2003 according to Embodiment 6 of the present application is shown.

[0144] like Figure 4C As shown, the optical imaging lens 2003 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 2003 also includes a stop STO (not shown) disposed on the object side of the first 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.

[0145] like Figure 4CAs shown, the optical imaging lens 2003 further includes seven spacers, namely, a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4, a fifth spacer P5, a fifth auxiliary spacer P5b, and a fifth secondary auxiliary spacer P5c. The first spacer P1 is disposed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacer P4 is disposed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacer P5 is disposed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the fifth auxiliary spacer P5b and the fifth secondary auxiliary spacer P5c are disposed between the fifth spacer and the sixth lens, the object side surface of the fifth auxiliary spacer P5b is in at least partial contact with the fifth spacer, and the object side surface of the fifth secondary auxiliary spacer P5c is in at least partial contact with the fifth auxiliary spacer P5b. Table 12 shows the basic parameters of the spacer element and lens barrel of the optical imaging lens 2003, and the units of each parameter in Table 12 are millimeters (mm). The above-mentioned spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 2003.

[0146] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 6.9195 6.9195 9.4000 9.4000 5.8627 9.3000 9.3000 5.6003 5.6003 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 9.2000 9.2000 8.8651 5.5552 8.7651 9.7314 7.5198 2.3812 0.0220 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.7564 0.0220 1.3620 1.1245 0.0220 2.5552 / / /

[0147] Table 12

[0148] Figure 5A Astigmatism curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent meridional image curvature and sagittal image curvature. Figure 5B The distortion curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent the distortion magnitude values ​​corresponding to different field angles. Figure 5C The magnification chromatic aberration curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 5A to FIG. 5C It can be seen that the optical imaging lenses provided in Examples 4 to 6 can achieve good imaging quality.

[0149] Example 7

[0150] 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, a lens group, and a spacer element group. The optical imaging lens 3001 also includes a stop STO (not shown) disposed on the object side of the first lens.

[0151] like Fig. 6A As 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 and a sixth lens E6. 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 optical imaging lens 1001 also includes a filter (not shown) for correcting color deviation, and the filter has an object side surface S13 and an image side surface S14. Light from the object passes through each surface S1 to S14 in sequence and is finally imaged on an imaging surface (not shown).

[0152] Table 13 shows the basic parameter table of the lens group of the optical imaging lens 3001 of Example 7, wherein the units of the radius of curvature, thickness / distance and effective focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0153]

[0154] Table 13

[0155] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.9619E-04 -7.2844E-05 3.1390E-05 -1.6488E-05 5.2284E-06 -1.0720E-06 1.4409E-07 S2 6.9406E-03 -3.3393E-03 1.1051E-03 -2.3400E-04 3.2364E-05 -3.0101E-06 1.8530E-07 S3 4.1827E-03 -1.0664E-03 5.2646E-04 -1.4276E-04 2.3172E-05 -2.5270E-06 1.8526E-07 S4 -1.1327E-02 4.2642E-03 -1.0318E-03 1.8423E-04 -2.4328E-05 2.0187E-06 -7.8242E-08 S5 -1.5518E-02 1.2187E-03 -3.9337E-04 1.6850E-04 -6.1825E-05 1.4852E-05 -2.2516E-06 S6 -7.5675E-03 -2.6702E-04 8.4468E-05 2.5294E-05 -9.2362E-06 -7.4803E-07 9.3102E-07 S7 1.0936E-02 -2.6301E-03 -5.5406E-04 5.4408E-04 -1.9427E-04 3.5012E-05 -2.6361E-06 S8 3.3928E-02 -1.5442E-02 5.7799E-03 -1.6916E-03 3.6498E-04 -5.7984E-05 6.7195E-06 S9 -7.0774E-03 -2.8598E-03 1.0982E-03 -1.2608E-04 -3.9276E-05 1.6122E-05 -2.2668E-06 S10 -3.7701E-02 1.7803E-02 -1.0212E-02 5.0080E-03 -1.9352E-03 5.6653E-04 -1.2219E-04 S11 3.7942E-03 2.4867E-03 -1.6188E-03 1.0446E-03 -5.3800E-04 2.0086E-04 -5.3700E-05 S12 3.2847E-03 -1.8353E-03 3.3806E-03 -3.2206E-03 1.9885E-03 -8.5159E-04 2.6050E-04

[0156] Table 14-1

[0157]

[0158]

[0159] Table 14-2

[0160] Table 15 shows the values ​​of the maximum half field of view Semi-FOV, effective focal length f, combined focal length f23, and vector heights SAG11, SAG12, and SAG31 of the optical imaging lens 3001.

[0161] parameter Semi-FOV(°) f(mm) f23(mm) SAG11(mm) SAG12(mm) SAG31(mm) Numeric 15.9671 14.2229 -9.5155 1.4014 -0.3542 0.9948

[0162] Table 15

[0163] like Fig. 6AAs shown, the optical imaging lens 3001 further includes nine spacer elements, namely a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a second auxiliary spacer element P2c, a third spacer element P3, a third auxiliary spacer element P3b, a third auxiliary spacer element P3c, a fourth spacer element P4 and a fifth spacer element P5. The first spacing element P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacing element P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacing element P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacing element P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacing element P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the second auxiliary spacing element P2b and the second auxiliary spacing element P2c are placed between the second spacing element and the third lens, the object side surface of the second auxiliary spacing element P2b is in at least partial contact with the second spacing element, and the object side surface of the second auxiliary spacing element P2c is in at least partial contact with the second auxiliary spacing element P2b; the third auxiliary spacing element P3b and the third auxiliary spacing element P3c are placed between the third spacing element and the fourth lens, the object side surface of the third auxiliary spacing element P3b is in at least partial contact with the third spacing element, and the object side surface of the third auxiliary spacing element P3c is in at least partial contact with the third auxiliary spacing element P3b. Table 16 shows the basic parameters of the spacer element and the lens barrel of the optical imaging lens 3001, and the units of each parameter in Table 16 are millimeters (mm). The above-mentioned spacer element can block the entry of extra external light, make the lens and the lens barrel better support each other, and enhance the structural stability of the optical imaging lens 3001.

[0164] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 6.7441 6.7441 8.7732 8.7732 5.9215 8.6732 8.6732 4.4900 4.4900 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.4732 8.4732 8.0732 5.3971 7.9732 8.9132 6.9504 1.9210 0.0200 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.4500 0.0220 2.3728 1.1379 0.0220 1.6084 0.8994 0.0220 /

[0165] Table 16

[0166] Example 8

[0167] Figure 6B A schematic structural diagram of an optical imaging lens 3002 according to Embodiment 8 of the present application is shown.

[0168] like Figure 6B As shown, the optical imaging lens 3002 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 3002 also includes a stop STO (not shown) disposed on the object side of the first 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.

[0169] like Figure 6BAs shown, the optical imaging lens 3002 also includes 11 spacing elements, namely, a first spacing element P1, a second spacing element P2, a second auxiliary spacing element P2b, a second auxiliary spacing element P2c, a third spacing element P3, a third auxiliary spacing element P3b, a third auxiliary spacing element P3c, a fourth spacing element P4, a fourth auxiliary spacing element P4b, a fourth auxiliary spacing element P4c and a fifth spacing element P5. The first spacing element P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacing element P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacing element P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacing element P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacing element P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the second auxiliary spacing element P2b and the second auxiliary spacing element P2c are placed between the second spacing element and the third lens, the object side surface of the second auxiliary spacing element P2b is in at least partial contact with the second spacing element, and the second The object side surface of the secondary auxiliary spacer element P2c is at least partially in contact with the second auxiliary spacer element P2b; the third auxiliary spacer element P3b and the third auxiliary spacer element P3c are placed between the third spacer element and the fourth lens, the object side surface of the third auxiliary spacer element P3b is at least partially in contact with the third spacer element, and the object side surface of the third auxiliary spacer element P3c is at least partially in contact with the third auxiliary spacer element P3b; the fourth auxiliary spacer element P4b and the fourth auxiliary spacer element P4c are placed between the fourth spacer element and the fifth lens, the object side surface of the fourth auxiliary spacer element P4b is at least partially in contact with the fourth spacer element, and the object side surface of the fourth auxiliary spacer element P4c is at least partially in contact with the fourth auxiliary spacer element P4b. Table 17 shows the basic parameters of the spacer element 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 spacer element can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 3002 is enhanced.

[0170] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 6.6481 6.6481 8.3732 8.3732 5.8003 8.2732 8.2732 4.2372 4.2372 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.0732 8.0732 7.6732 4.8127 7.5732 8.5132 6.7268 1.9210 0.0200 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.4500 0.0220 2.3728 1.5553 0.0220 1.6084 0.8994 0.0220 /

[0171] Table 17

[0172] Example 9

[0173] Figure 6C A schematic structural diagram of an optical imaging lens 3003 according to Embodiment 9 of the present application is shown.

[0174] like Figure 6CAs shown, the optical imaging lens 3003 includes a lens barrel P0, a lens group, and a spacer element group. The optical imaging lens 3003 also includes a stop STO (not shown) disposed on the object side of the first 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.

[0175] like Figure 6C As shown, the optical imaging lens 3003 further includes nine spacer elements, namely a first spacer element P1, a second spacer element P2, a second auxiliary spacer element P2b, a second auxiliary spacer element P2c, a third spacer element P3, a third auxiliary spacer element P3b, a third auxiliary spacer element P3c, a fourth spacer element P4 and a fifth spacer element P5. The first spacing element P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacing element P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacing element P3 is placed on the image side of the third lens and is in at least partial contact with the image side surface of the third lens; the fourth spacing element P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens; the fifth spacing element P5 is placed on the image side of the fifth lens and is in at least partial contact with the image side surface of the fifth lens; the second auxiliary spacing element P2b and the second auxiliary spacing element P2c are placed between the second spacing element and the third lens, the object side surface of the second auxiliary spacing element P2b is in at least partial contact with the second spacing element, and the object side surface of the second auxiliary spacing element P2c is in at least partial contact with the second auxiliary spacing element P2b; the third auxiliary spacing element P3b and the third auxiliary spacing element P3c are placed between the third spacing element and the fourth lens, the object side surface of the third auxiliary spacing element P3b is in at least partial contact with the third spacing element, and the object side surface of the third auxiliary spacing element P3c is in at least partial contact with the third auxiliary spacing element P3b. Table 18 shows the basic parameters of the spacer element 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 spacer element can block the extra light from the edge of the lens from entering, so that the lens and the lens barrel can better support each other, and enhance the structural stability of the optical imaging lens 3003.

[0176] parameter d1s d1m D1s D1m d2s D2s D2m d3s d3m Numeric 6.9337 6.9337 9.1732 9.1732 6.2868 9.0732 9.0732 4.7483 4.7483 parameter D3s D3m D4m d5s D5m d0s d0m EP01 CP1 Numeric 8.8732 8.8732 8.4732 5.3524 8.3732 9.3132 7.1990 1.9210 0.0200 parameter EP12 CP2 EP23 EP45 CP5 EP50 CP3b CP3c / Numeric 1.3230 0.0220 2.4998 1.1379 0.0220 1.6084 0.8994 0.0220 /

[0177] Table 18

[0178] Fig. 7A Astigmatism curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent meridional image curvature and sagittal image curvature. Figure 7B The distortion curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent the distortion values ​​corresponding to different field angles. Figure 7CThe magnification chromatic aberration curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. 7A to 7C It can be seen that the optical imaging lenses provided in Examples 7 to 9 can achieve good imaging quality.

[0179] In summary, the optical imaging lenses of Examples 1 to 9 satisfy the relationship shown in Table 19.

[0180] Conditional / Example 1 2 3 4 5 6 7 8 9 d0s / d0m 1.2788 1.2788 1.3286 1.2825 1.2308 1.2941 1.2824 1.2656 1.2937 (D1s-d1s) / (D2s-d2s) 0.6683 0.6070 0.8040 0.6473 0.5111 0.7216 0.7374 0.6976 0.8037 (CP1+CP2) / T12 0.8800 0.8800 0.8800 0.3044 0.3044 0.3044 0.4056 0.4056 0.4056 CT1 / EP12 1.4736 1.4736 1.4736 1.4034 1.4034 1.4034 1.8820 1.8820 2.0627 f1 / (d1m-d2s) 8.1638 9.0285 11.0715 7.1022 6.8830 7.1559 8.5931 8.3377 10.9270 R2 / R3 0.6547 0.6547 0.6547 1.1691 1.1691 1.1691 1.2874 1.2874 1.2874 f23 / EP23 -7.6624 -8.6821 -6.5306 -6.0311 -5.1670 -4.3347 -4.0102 -4.0102 -3.8065 V3 / V2 2.1263 2.1263 2.1263 2.1263 2.1263 2.1263 1.1066 1.1066 1.1066 f2×N2 / D1m -2.0262 -2.1204 -1.9400 -1.4753 -1.5475 -1.4125 -1.3824 -1.4485 -1.3221 D2m / R5 2.0157 1.9251 2.1063 2.4309 2.3162 2.5402 3.0518 2.9111 3.1926 D3s / R6 2.8148 2.6868 2.9427 2.9751 2.8602 3.3365 2.7595 2.6292 2.8898 EP50 / (CP5+CT6) 2.1032 2.1034 2.1034 3.1039 3.0179 3.1284 1.7968 1.7968 1.7968 SAG31 / EP23 0.9026 1.0227 0.7693 1.2086 1.0355 0.8687 0.4193 0.4193 0.3980 SAG31 / CT3 1.3618 1.3618 1.3618 1.9154 1.9154 1.9154 1.2102 1.2102 1.2102 |f3 / (D2m+d3s)| 1.6248 1.7053 1.6072 1.6719 1.7820 1.8100 2.1030 2.2127 2.0028 (|SAG11|+|SAG12|) / EP01 0.7068 0.7068 0.7068 0.7413 0.7414 0.7413 0.9139 0.9139 0.9139 EP45 / (T45+CT4) 0.2864 0.2864 0.2864 0.3766 0.4068 0.3766 1.2955 1.7707 1.2955 R7 / R8 0.6913 0.6913 0.6913 0.5890 0.5890 0.5890 1.6928 1.6928 1.6928 f4 / D4m×N4 2.5982 2.7281 2.4801 2.2390 2.3558 2.1379 2.4160 2.5420 2.3020 (D5m+d5s) / f5 0.1105 0.1096 0.1125 0.1843 0.1796 0.1855 -0.8620 -0.7986 -0.8849 (CP3b+CP3c) / T34 0.9949 1.1479 0.7440 / / / 0.3315 0.3315 0.3315

[0181] Table 19

[0182] 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.

[0183] 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 (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that: Comprising: A lens barrel, a lens group and a spacer element group disposed within the lens barrel, wherein, The lens group sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; The spacer element group includes: A first spacer element disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; and A second spacer element 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 maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 10° < Semi-FOV < 20°; The inner diameter d0s of the object side end face of the lens barrel and the inner diameter d0m of the image side end face of the lens barrel satisfy: 1 < d0s / d0m < 1.6; The outer diameter D1s of the object side surface of the first spacer element, the inner diameter d1s of the object side surface of the first spacer element, the outer diameter D2s of the object side surface of the second spacer element and the inner diameter d2s of the object side surface of the second spacer element satisfy: 0.2 < (D1s - d1s) / (D2s - d2s) < 1; The maximum thickness CP1 of the first spacer element in the optical axis direction, the maximum thickness CP2 of the second spacer element in the optical axis direction and the air gap T12 between the first lens and the second lens on the optical axis satisfy: 0.1 < (CP1 + CP2) / T12 < 1.

1.

2. The optical imaging lens according to claim 1, wherein, Among the first lens to the sixth lens, the first lens has the largest central thickness on the optical axis; The optical imaging lens satisfies: 1 < CT1 / EP12 < 2.5; wherein, CT1 is the central thickness of the first lens on the optical axis, and EP12 is the distance between the first spacer element and the second spacer element in the optical axis direction.

3. The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 0 < R2 / R3 < 1.7 and 6 < f1 / (d1m - d2s) < 12; wherein, R2 is the curvature radius of the image side surface of the first lens, R3 is the curvature radius of the object side surface of the second lens, f1 is the effective focal length of the first lens, d1m is the inner diameter of the image side surface of the first spacer element, and d2s is the inner diameter of the object side surface of the second spacer element.

4. The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 0.5 < (|SAG11| + |SAG12|) / EP01 < 1.2; wherein, SAG11 is the axial distance between the intersection point of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, SAG12 is the axial distance between the intersection point of the image side surface of the first lens and the optical axis and the vertex of the effective radius of the image side surface of the first lens, and EP01 is the distance on the optical axis from the object side surface of the lens barrel to the object side surface of the first spacer element.

5. The optical imaging lens according to claim 1, wherein: the optical imaging lens satisfies: -2.5 < f2×N2 / D1m < -1; where f2 is the effective focal length of the second lens, N2 is the refractive index of the second lens, and D1m is the outer diameter of the image side of the first spacer element.

6. The optical imaging lens according to claim 1, wherein: the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side of the third lens; the optical imaging lens satisfies: 1.5 < D2m / R5 < 3.5 and 2 < D3s / R6 < 3.8; where D2m is the outer diameter of the image side of the second spacer element, R5 is the radius of curvature of the object side of the third lens, D3s is the outer diameter of the object side of the third spacer element, and R6 is the radius of curvature of the image side of the third lens.

7. The optical imaging lens according to any one of claims 1-6, wherein: the spacer element group further includes: a fifth spacer element disposed between the fifth lens and the sixth lens and at least partially in contact with the image side of the fifth lens; the optical imaging lens satisfies: 1.2 < EP50 / (CP5+CT6) < 3.8; where EP50 is the distance on the optical axis from the image side of the fifth spacer element to the image-side end face of the lens barrel, CP5 is the maximum thickness of the fifth spacer element along the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis.

8. The optical imaging lens according to any one of claims 1-5, wherein: the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side of the third lens; the optical imaging lens satisfies: 1 < SAG31 / CT3 < 2.3 and 0.1 < SAG31 / EP23 < 1.4; where SAG31 is the axial distance between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens, CT3 is the central thickness of the third lens on the optical axis, and EP23 is the spacing distance between the second spacer element and the third spacer element along the optical axis.

9. The optical imaging lens according to any one of claims 1-5, wherein: the spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially in contact with the image side of the third lens; the optical imaging lens satisfies: 1 < |f3 / (D2m+d3s)| < 3; where f3 is the effective focal length of the third lens, D2m is the outer diameter of the image side of the second spacer element, and d3s is the inner diameter of the object side of the third spacer element.

10. The optical imaging lens according to any one of claims 1-5, wherein: The spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; The optical imaging lens satisfies: 1 < V3 / V2 < 2.5 and -10 < f23 / EP23 < -1; where V2 is the Abbe number of the second lens, V3 is the Abbe number of the third lens, f23 is the combined focal length of the second lens and the third lens, and EP23 is the axial spacing distance between the second spacer element and the third spacer element.

11. The optical imaging lens according to any one of claims 1-6, characterized in that The spacer element group further includes: a fourth spacer element disposed between the fourth lens and the fifth lens and at least partially contacting the image side surface of the fourth lens; and a fifth spacer element disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens; The optical imaging lens satisfies: 0 < EP45 / (T45 + CT4) < 2; where EP45 is the axial spacing distance between the fourth spacer element and the fifth spacer element, T45 is the air gap between the fourth lens and the fifth lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis.

12. The optical imaging lens according to any one of claims 1-6, characterized in that The spacer element group further includes: a fourth spacer element disposed between the fourth lens and the fifth lens and at least partially contacting the image side surface of the fourth lens; The optical imaging lens satisfies: 0.2 < R7 / R8 < 2 and 1.5 < f4 / D4m×N4 < 3.2; where R7 is the curvature radius of the object side surface of the fourth lens, R8 is the curvature radius of the image side surface of the fourth lens, f4 is the effective focal length of the fourth lens, D4m is the outer diameter of the image side surface of the fourth spacer element, and N4 is the refractive index of the fourth lens.

13. The optical imaging lens according to any one of claims 1-6, characterized in that The spacer element group further includes: a fifth spacer element disposed between the fifth lens and the sixth lens and at least partially contacting the image side surface of the fifth lens; The optical imaging lens satisfies: -1 < (D5m + d5s) / f5 < 0.5; where D5m is the outer diameter of the image side surface of the fifth spacer element, d5s is the inner diameter of the object side surface of the fifth spacer element, and f5 is the effective focal length of the fifth lens.

14. The optical imaging lens according to any one of claims 1-5, characterized in that The spacer element group further includes: a third spacer element disposed between the third lens and the fourth lens and at least partially contacting the image side surface of the third lens; a third auxiliary spacer element disposed on the image side of the third spacer element and at least partially contacting the third spacer element; a third secondary spacer element disposed on the image side of the third auxiliary spacer element and at least partially contacting the third auxiliary spacer element; The optical imaging lens satisfies: 0.1<(CP3b+CP3c) / T34<1.3, wherein CP3b is the maximum thickness of the third auxiliary spacer element along the optical axis, CP3c is the maximum thickness of the third auxiliary spacer element along the optical axis, and T34 is the air spacing between the third lens and the fourth lens on the optical axis.

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