Optical camera lens

Abstract

The present application discloses an optical camera lens, comprising a lens barrel, an optical lens group and a spacer element group disposed in the lens barrel; the optical lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; wherein the third lens has positive optical power, and its object side surface is a convex surface, and its image side surface is a convex surface; the number of lenses with optical power in the optical camera lens is seven; the spacer element group comprises a second spacer element disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; wherein the curvature radius R4 of the image side surface of the second lens, the curvature radius R5 of the object side surface of the third lens and the maximum thickness CP2 of the second spacer element satisfy: 0.3mm<R5 / R4×CP2<0.9mm; the inner diameter d2m of the image side surface of the second spacer element, the curvature radius R6 of the image side surface of the third lens, the effective focal length f3 of the third lens and the refractive index N3 of the third lens satisfy: -3.6mm<f3×d2m×N3 / R6<-2.5mm.

Description

Technical Field

[0001] The present application relates to an optical camera lens, and in particular to an optical camera lens composed of seven lenses. Background Art

[0002] With the rise of the automobile industry in recent years, the domestic demand and export volume of automobiles have increased day by day. The rapid development of domestic automobiles has driven the automobile industry to change in the direction of electrification and intelligence, and various convenient human-computer interaction experiences have emerged in an endless stream. Therefore, the demand for cameras installed in cars is increasing. The lenses installed in cars and those installed in mobile phones have different requirements for lenses due to their different usage scenarios. The lenses on cars are more concerned about their stability and reliability. They can still maintain their due performance in relatively harsh working environments, but they are also lacking in imaging performance. For example: instability during assembly can easily generate stray light, and the imaging effect is easily affected by stray light. Utility Model Content

[0003] The present application provides an optical camera lens that can at least solve or partially solve at least one problem or other problems existing in the prior art.

[0004] The present application provides an optical camera lens, comprising a lens barrel, an optical lens group and a spacer element group disposed in the lens barrel; the optical lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; wherein the third lens has positive optical power, and its object side surface is a convex surface, and its image side surface is a convex surface; the spacer element group comprises a second spacer element disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; the number of lenses with optical power in the optical camera lens is seven; wherein the curvature radius R4 of the image side surface of the second lens, the curvature radius R5 of the object side surface of the third lens and the maximum thickness CP2 of the second spacer element satisfy: 0.3mm<R5 / R4×CP2<0.9mm; the inner diameter d2m of the image side surface of the second spacer element, the curvature radius R6 of the image side surface of the third lens, the effective focal length f3 of the third lens and the refractive index N3 of the third lens satisfy: -3.6mm<f3×d2m×N3 / R6<-2.5mm.

[0005] According to an exemplary embodiment of the present application, an outer diameter D2s of the object side surface of the second spacer element, an outer diameter D2m of the image side surface of the second spacer element, and a combined focal length f23 of the second lens and the third lens satisfy: 2.5<(D2s+D2m) / f23<4.0.

[0006] According to an exemplary embodiment of the present application, the spacer element group also includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, the interval EP01 between the object side end surface of the lens barrel and the first spacer element along the optical axis, the center thickness CT1 of the first lens on the optical axis, and the air interval T12 between the first lens and the second lens on the optical axis satisfy: 4.5<(EP01 / CT1)+(EP01 / T12)<9.0.

[0007] According to an exemplary embodiment of the present application, the spacer element group also includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein the Abbe number V1 of the first lens, the Abbe number V2 of the second lens, the effective focal length f1 of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -11.0≤(V1-V2)×d1s / f1<-7.5.

[0008] According to an exemplary embodiment of the present application, the spacer element group also includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein the center thickness CT2 of the second lens on the optical axis, the maximum thickness CP1 of the first spacer element, and the interval EP12 between the first spacer element and the second spacer element along the optical axis satisfy: 0.7<CT2 / (CP1+EP12)<1.4.

[0009] According to an exemplary embodiment of the present application, the spacer element group also includes a first spacer element placed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein an outer diameter D1s of the object side surface of the first spacer element, an outer diameter D1m of the image side surface of the first spacer element, a curvature radius R2 of the image side surface of the first lens, and a curvature radius R3 of the object side surface of the second lens satisfy: 3.0<D1s / R2+D1m / R3<4.5.

[0010] According to an exemplary embodiment of the present application, the spacer element group also includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein the effective focal length f2 of the second lens, the refractive index N2 of the second lens and the inner diameter d1m of the image side surface of the first spacer element satisfy: 0.9<f2 / (d1m×N2)<2.8.

[0011] According to an exemplary embodiment of the present application, the spacer element group also includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein the curvature radius R7 of the object side surface of the fourth lens, the refractive index N4 of the fourth lens and the outer diameter D4s of the object side surface of the fourth spacer element satisfy: -2.6<R7×N4 / D4s<-1.0.

[0012] According to an exemplary embodiment of the present application, the spacer element group also includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein a curvature radius R8 of the image side surface of the fourth lens, an outer diameter D4s of the object side surface of the fourth spacer element, and an inner diameter d4s of the object side surface of the fourth spacer element satisfy: 2.0<R8 / (D4s-d4s)<3.5.

[0013] According to an exemplary embodiment of the present application, the spacer element group also includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein an outer diameter D4m of the image side surface of the fourth spacer element, an inner diameter d4m of the image side surface of the fourth spacer element, an effective focal length f5 of the fifth lens and a refractive index N5 of the fifth lens satisfy: 2.5<(f5×N5) / (D4m-d4m)<4.6.

[0014] According to an exemplary embodiment of the present application, the spacer element group also includes a fourth spacer element placed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens, and a fifth spacer element placed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein, the interval EP45 between the fourth spacer element and the fifth spacer element along the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 3.0<(CT4+CT5+T45) / EP45<4.5.

[0015] According to an exemplary embodiment of the present application, the spacer element group also includes a fifth spacer element disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein an outer diameter D5s of the object side surface of the fifth spacer element, an inner diameter d5s of the object side surface of the fifth spacer element, the Abbe number V5 of the fifth lens and a curvature radius R10 of the image side surface of the fifth lens satisfy: -22.5<(D5s-d5s)×V5 / R10<-8.0.

[0016] According to an exemplary embodiment of the present application, the spacer element group also includes a fifth spacer element disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein the maximum thickness CP5 of the fifth spacer element, the Abbe number V6 of the sixth lens, the Abbe number V7 of the seventh lens, and the combined focal length f67 of the sixth lens and the seventh lens satisfy: 2.5<(V6-V7)×CP5 / f67≤5.0.

[0017] The optical camera lens provided by the present application uses seven lenses, among which the second lens and the third lens are relatively sensitive when assembled and are prone to stray light. Therefore, by controlling the product of the ratio of the radius of curvature of the object side of the third lens and the image side of the second lens and the maximum thickness of the second spacing element, and at the same time limiting the relationship between the inner diameter of the image side of the second spacing element, the radius of curvature of the image side of the third lens, the effective focal length of the third lens and the refractive index of the third lens, the shapes of the second lens and the third lens can be constrained, the sensitivity of the second lens and the third lens can be reduced, stray light can be reduced, and the imaging quality of the optical camera lens can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, purposes and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments made with reference to the following drawings, in which:

[0019] Figure 1 A parameter annotation diagram of an optical camera lens according to the present application is shown;

[0020] Figure 2 A schematic diagram of the optical path of the optical camera lens according to the present application is shown;

[0021] Figure 3 A schematic structural diagram of an optical camera lens according to Embodiment 1 of the present application is shown;

[0022] Figure 4 A schematic structural diagram of an optical camera lens according to Embodiment 2 of the present application is shown;

[0023] Figure 5 A schematic structural diagram of an optical camera lens according to Embodiment 3 of the present application is shown;

[0024] Fig. 6A and Figure 6B The axial chromatic aberration curve and the astigmatism curve of the optical camera lens of Embodiment 1, 2 or 3 of the present application are respectively shown;

[0025] Figure 7 A schematic structural diagram of an optical camera lens according to Embodiment 4 of the present application is shown;

[0026] Figure 8 A schematic structural diagram of an optical camera lens according to Embodiment 5 of the present application is shown;

[0027] Fig. 9 A schematic structural diagram of an optical camera lens according to Embodiment 6 of the present application is shown;

[0028] Fig. 10A and Fig. 10B The axial chromatic aberration curve and the astigmatism curve of the optical camera lens of Embodiment 4, 5 or 6 of the present application are respectively shown;

[0029] Fig.11 A schematic structural diagram of an optical camera lens according to Embodiment 7 of the present application is shown;

[0030] Fig.12 A schematic structural diagram of an optical camera lens according to Embodiment 8 of the present application is shown;

[0031] Fig.13 A schematic structural diagram of an optical camera lens according to Embodiment 9 of the present application is shown;

[0032] Fig.14A and Fig. 14B The axial chromatic aberration curve and the astigmatism curve of the optical camera lens of Embodiment 7, 8 or 9 of the present application are respectively shown; and

[0033] Fig.15A This is a stray light simulation diagram at the first viewing angle when the optical camera lens satisfies R5 / R4×CP2=0.39, f3×d2m×N3 / R6=-3.22;

[0034] Fig. 15B This is a stray light simulation diagram at the first viewing angle when the optical camera lens satisfies R5 / R4×CP2=0.18, f3×d2m×N3 / R6=-4.12;

[0035] Fig.16A This is a stray light simulation diagram at the second viewing angle when the optical camera lens satisfies R5 / R4×CP2=0.39, f3×d2m×N3 / R6=-3.22;

[0036] Fig. 16B This is a simulated diagram of stray light at the second viewing angle when the optical camera lens satisfies R5 / R4×CP2=1.36, f3×d2m×N3 / R6=-2.31. DETAILED DESCRIPTION

[0037] In order to better understand the present application, various aspects of the present application are described in detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way.

[0038] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are 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 for illustration only and are not drawn strictly to scale.

[0039] 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 closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0040] It should also be understood that the terms "include", "comprising", "having", "including" 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. It should be noted that in this specification, the expressions first, second, third, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features.

[0041] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. Terms should be interpreted as having the same meaning as they have 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.

[0042] 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 present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] Figure 1 : is a parameter annotation diagram of an optical camera lens according to an exemplary embodiment of the present application. Figure 1, d1s represents the inner diameter of the object side surface of the first spacing element, d1m represents the inner diameter of the image side surface of the first spacing element, D1s represents the outer diameter of the object side surface of the first spacing element, D1m represents the outer diameter of the image side surface of the first spacing element, d2m represents the inner diameter of the image side surface of the second spacing element, D2s represents the outer diameter of the object side surface of the second spacing element, D2m represents the outer diameter of the image side surface of the second spacing element, d4s represents the inner diameter of the object side surface of the fourth spacing element, d4m represents the inner diameter of the image side surface of the fourth spacing element, and D4s represents the outer diameter of the object side surface of the fourth spacing element. diameter, D4m represents the outer diameter of the image side surface of the fourth spacer element, d5s represents the inner diameter of the object side surface of the fifth spacer element, D5s represents the outer diameter of the object side surface of the fifth spacer element, EP01 represents the interval between the object side end surface of the lens barrel and the first spacer element along the optical axis, CP1 represents the maximum thickness of the first spacer element, EP12 represents the interval between the first spacer element and the second spacer element along the optical axis, CP2 represents the maximum thickness of the second spacer element, EP45 represents the interval between the fourth spacer element and the fifth spacer element along the optical axis, and CP5 represents the maximum thickness of the fifth spacer element.

[0044] refer to Figures 3 to 5 , Figures 7 to 9 as well as Figures 11 to 13 In a first aspect of the present application, an optical camera lens is provided. The optical camera lens may include an optical lens group. The optical lens group may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis.

[0045] In example embodiments, the first lens may have negative optical power.

[0046] In example embodiments, the second lens may have positive refractive power.

[0047] In an exemplary embodiment, the third lens may have positive refractive power, with an object-side surface being convex and an image-side surface being convex.

[0048] In example embodiments, the fourth lens may have negative power.

[0049] In example embodiments, the fifth lens may have positive refractive power.

[0050] In example embodiments, the sixth lens may have positive power.

[0051] In example embodiments, the seventh lens may have negative power.

[0052] In an exemplary embodiment, the sixth lens and the seventh lens are cemented and form a cemented lens.

[0053] In an exemplary embodiment, the number of lenses having optical power of the optical camera lens is seven.

[0054] In an exemplary embodiment, the optical camera lens further includes one or more 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 may be placed on the image side of the first lens and at least partially contact the image side of the first lens; the second spacer element may be placed on the image side of the second lens and at least partially contact the image side of the second lens; the third spacer element may be placed on the image side of the third lens and at least partially contact the image side of the third lens; the fourth spacer element may be placed on the image side of the fourth lens and at least partially contact the image side of the fourth lens. The fifth spacer element may be placed on the image side of the fifth lens and at least partially contact the image side of the fifth lens. Reasonable use of spacers can effectively avoid the risk of stray light, reduce interference with image quality, and thereby improve the imaging quality of the optical camera lens.

[0055] In an exemplary embodiment, the optical camera lens may further include a lens barrel, wherein the optical lens group and the spacer element group are disposed in the lens barrel.

[0056] In an exemplary embodiment, the outer peripheral surface of the lens may have a trimmed portion and a non-trimmed portion, and the outer diameter of the trimmed portion of the lens is smaller than the outer diameter of the non-trimmed portion of the lens. When the outer peripheral surface of the lens has a trimmed portion, the outer diameter of the lens generally refers to the outer diameter of the non-trimmed portion of the lens. Accordingly, the outer peripheral surface of the spacer element may have a trimmed portion and a non-trimmed portion, and the outer diameter of the spacer element generally refers to the outer diameter of the non-trimmed portion of the spacer element.

[0057] In an exemplary embodiment, the optical camera lens may further include a stop disposed between the third lens and the fourth lens.

[0058] In an exemplary embodiment, the curvature radius R4 of the image side surface of the second lens, the curvature radius R5 of the object side surface of the third lens and the maximum thickness CP2 of the second spacer element can satisfy: 0.3<R5 / R4×CP2<0.9; the inner diameter d2m of the image side surface of the second spacer element, the curvature radius R6 of the image side surface of the third lens, the effective focal length f3 of the third lens and the refractive index N3 of the third lens satisfy: -3.6mm<f3×d2m×N3 / R6<-2.5mm. Among them, the second lens and the third lens are relatively sensitive when assembled and are prone to stray light. Therefore, by controlling the product of the ratio of the curvature radius of the object side surface of the third lens and the image side surface of the second lens and the maximum thickness of the second spacer element, and at the same time limiting the relationship between the inner diameter of the image side surface of the second spacer element, the curvature radius of the image side surface of the third lens, the effective focal length of the third lens and the refractive index of the third lens, the shapes of the second lens and the third lens can be constrained, the sensitivity of the second lens and the third lens can be reduced, stray light can be reduced, and the imaging quality of the optical camera lens can be improved.

[0059] Table 1 shows the imaging states of three optical camera lenses (eg, lens 1, lens 2, and lens 3).

[0060] As shown in Table 1, Fig.15A , Fig. 15B , Fig.16A , Fig. 16B As shown, Fig.15A The stray light simulation diagram of lens 1 at the first viewing angle when R5 / R4×CP2=0.39, f3×d2m×N3 / R6=-3.22. Fig. 15B The stray light simulation diagram of lens 2 at the first viewing angle when R5 / R4×CP2=0.18 and f3×d2m×N3 / R6=-4.12 is satisfied. Fig.16A The stray light simulation diagram of lens 1 at the second viewing angle when R5 / R4×CP2=0.39, f3×d2m×N3 / R6=-3.22. Fig. 16B The stray light simulation diagram of lens 3 at the second viewing angle when R5 / R4×CP2=1.36, f3×d2m×N3 / R6=-2.31 is satisfied.

[0061]

[0062] Table 1

[0063] from Fig. 15B and Fig. 16B From the above, when the optical camera lens does not satisfy 0.3<R5 / R4×CP2<0.9 and / or -3.6mm<f3×d2m×N3 / R6<-2.5mm, the optical camera lens has obvious stray light phenomenon. Fig.15A and Fig.16AFrom the perspective of imaging, when the optical camera lens satisfies 0.3<R5 / R4×CP2<0.9 and -3.6mm<f3×d2m×N3 / R6<-2.5mm, the stray light of the optical camera lens can be reduced, thereby improving the imaging quality of the optical camera lens.

[0064] In an exemplary embodiment, the outer diameter D2s of the object side surface of the second spacer element, the outer diameter D2m of the image side surface of the second spacer element, and the combined focal length f23 of the second lens and the third lens satisfy: 2.5<(D2s+D2m) / f23<4.0. By controlling the above conditional expression, the outer diameters of the object side surface and the image side surface of the second spacer element can be constrained, so that the step difference between the second lens and the third lens is limited within a reasonable range, which is beneficial to improving the assembly stability of the optical camera lens and improving the reliability of the optical camera lens; at the same time, by limiting the combined focal length of the second lens and the third lens, the aberration of the edge field of view can be reduced.

[0065] In an exemplary embodiment, the interval EP01 between the object side end face of the lens barrel and the first spacing element along the optical axis, the center thickness CT1 of the first lens on the optical axis, and the air interval T12 between the first lens and the second lens on the optical axis can satisfy: 4.5<(EP01 / CT1)+(EP01 / T12)<9.0. By controlling the above conditional expression, the interval between the object side end face of the lens barrel and the first spacing element along the optical axis can be constrained, the edge thickness of the lens can be effectively controlled, the data can be prevented from being too small, and the lens processing is convenient. At the same time, the center thickness of the first lens and the air interval parameters are reasonably controlled, which is conducive to controlling the incident light entering and exiting the optical imaging system, so that the lens has a better anti-distortion ability and ensures the stability of the front section assembly of the lens barrel.

[0066] In an exemplary embodiment, the Abbe number V1 of the first lens, the Abbe number V2 of the second lens, the effective focal length f1 of the first lens and the inner diameter d1s of the side surface of the first spacer element satisfy: -11.0≤(V1-V2)×d1s / f1<-7.5. By reasonably selecting the materials of the first lens and the second lens with appropriate Abbe numbers, it is beneficial for the optical camera lens to adapt to high-temperature application environments. At the same time, by limiting the effective focal length of the first lens and the first spacer element, a reasonable light incident angle can be obtained, and at the same time, the first spacer element with a suitable inner diameter is selected, and some useless light at the edge is eliminated, reducing the generation of stray light.

[0067] In an exemplary embodiment, the center thickness CT2 of the second lens on the optical axis, the maximum thickness CP1 of the first spacer element, and the interval EP12 between the first spacer element and the second spacer element along the optical axis may satisfy: 0.7<CT2 / (CP1+EP12)<1.4. Reasonable configuration of the relationship between the center thickness of the second lens, the maximum thickness of the first spacer element, and the interval between the first spacer element and the second spacer element along the optical axis is conducive to optimizing the size distribution of the lens without affecting the performance of the optical camera lens, thereby improving the assembly stability of the optical camera lens and realizing the miniaturization of the optical camera lens.

[0068] In an exemplary embodiment, the outer diameter D1s of the object side surface of the first spacer element, the outer diameter D1m of the image side surface of the first spacer element, the curvature radius R2 of the image side surface of the first lens, and the curvature radius R3 of the object side surface of the second lens can satisfy: 3.0<D1s / R2+D1m / R3<4.5. Reasonable configuration of the relationship between the curvature radius of the image side surface of the first lens, the curvature radius of the object side surface of the second lens, and the outer diameters of the object side surface and the image side surface of the first spacer element can make the first lens and the second lens have appropriate edge thickness, improve the processing feasibility of the first lens and the second lens, and at the same time can also restrict the number of incident light rays, improve the illumination of the optical camera lens, and ensure the assembly stability between the first lens and the second lens.

[0069] In an exemplary embodiment, the effective focal length f2 of the second lens, the refractive index N2 of the second lens, and the inner diameter d1m of the image side surface of the first spacing element can satisfy: 0.9<f2 / (d1m×N2)<2.8. By controlling the above conditional expression, the effective focal length and refractive index of the second lens can be constrained, so that the light passes through the second lens more smoothly and is less likely to generate edge stray light; at the same time, by limiting the inner diameter of the image side surface of the first spacing element, the edge useless light can be partially absorbed by the first spacing element, thereby improving the imaging quality of the optical imaging lens.

[0070] In an exemplary embodiment, the radius of curvature R7 of the object side surface of the fourth lens, the refractive index N4 of the fourth lens, and the outer diameter D4s of the object side surface of the fourth spacer element may satisfy: -2.6<R7×N4 / D4s<-1.0. By controlling the above conditional expression, the radius of curvature and the refractive index of the fourth lens can be constrained, so that the fourth lens can correct the off-axis field curvature as a separate component; at the same time, by limiting the outer diameter of the object side surface of the fourth spacer element, the edge of the fourth lens can have strong processability, ensuring that the fourth lens is more stable when assembled.

[0071] In an exemplary embodiment, the curvature radius R8 of the image side surface of the fourth lens, the outer diameter D4s of the object side surface of the fourth spacer element, and the inner diameter d4s of the object side surface of the fourth spacer element can satisfy: 2.0<R8 / (D4s-d4s)<3.5. By controlling the above conditional expression, the inner and outer diameters of the object side surface of the fourth spacer element can be constrained, so that the length of the structural part (non-effective diameter part) of the fourth lens is within a reasonable range, thereby improving the processability of the fourth lens; at the same time, by limiting the curvature radius of the image side surface of the fourth lens, the curvature degree of the fourth lens can be controlled, thereby obtaining a more reasonable light refraction angle.

[0072] In an exemplary embodiment, the outer diameter D4m of the image side surface of the fourth spacer element, the inner diameter d4m of the image side surface of the fourth spacer element, the effective focal length f5 of the fifth lens and the refractive index N5 of the fifth lens can satisfy: 2.5<(f5×N5) / (D4m-d4m)<4.6. By controlling the above conditional expression, the inner and outer diameters of the image side surface of the fourth spacer element can be constrained, and the incident light incident on the fifth lens can be effectively controlled; at the same time, by limiting the effective focal length and refractive index of the fifth lens, the ability of the optical camera lens to correct astigmatism and field curvature can be effectively improved, and the appearance of ghost images can be reduced while ensuring the stability of the assembly.

[0073] In an exemplary embodiment, the interval EP45 between the fourth spacer element and the fifth spacer element, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 3.0<(CT4+CT5+T45) / EP45<4.5. Reasonable configuration of the relationship between the center thickness of the fourth lens on the optical axis, the center thickness of the fifth lens on the optical axis, the air interval between the fourth lens and the fifth lens on the optical axis, and the interval between the fourth spacer element and the fifth spacer element along the optical axis can make the distribution of the fourth lens and the fifth lens on the optical axis more reasonable, and make the appearance of the optical camera lens meet the requirements, and at the same time can reduce the sensitivity of the air interval to the field curvature, and improve the assembly stability between the fourth lens and the fifth lens.

[0074] In an exemplary embodiment, the outer diameter D5s of the object side surface of the fifth spacer, the inner diameter d5s of the object side surface of the fifth spacer, the Abbe number V5 of the fifth lens, and the curvature radius R10 of the image side surface of the fifth lens can satisfy: -22.5<(D5s-d5s)×V5 / R10<-8.0. Reasonable configuration of the relationship between the inner and outer diameters of the object side surface of the fifth spacer, the Abbe number of the fifth lens, and the curvature radius of the image side surface of the fifth lens can reduce edge useless light, and make the main light better match the chip of the optical camera lens, thereby improving the overall brightness of the optical camera lens.

[0075] In an exemplary embodiment, the maximum thickness CP5 of the fifth spacer, the Abbe number V6 of the sixth lens, the Abbe number V7 of the seventh lens, and the combined focal length f67 of the sixth lens and the seventh lens may satisfy: 2.5<(V6-V7)×CP5 / f67≤5.0. Reasonable configuration of the relationship between the maximum thickness of the fifth spacer, the Abbe number of the sixth lens, the Abbe number of the seventh lens, and the combined focal length of the sixth lens and the seventh lens can balance the aberrations generated by the lenses with positive power among the first to fifth lenses, correct chromatic aberration, improve the imaging quality of the optical camera lens, and ensure the assembly stability of the cemented lens formed by cementing the sixth lens and the seventh lens.

[0076] According to the above-mentioned embodiment of the present application, the optical imaging lens can use seven lenses and at least one spacer element. By reasonably allocating the parameters of each lens, lens barrel and each spacer element, stray light can be reduced, and the miniaturization characteristics of the optical imaging lens can be achieved, thereby improving the imaging quality and assembly stability of the optical imaging lens.

[0077] In an embodiment of the present application, at least one of the surfaces of each lens in the first lens to the seventh lens is an aspherical 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 that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side surface and the image side surface of each lens in the first lens to the seventh lens are both aspherical surfaces.

[0078] The second aspect of the present application provides such an optical camera lens. The optical camera lens may include a lens barrel, an optical lens group and a spacer element group disposed in the lens barrel. The optical lens group may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; wherein the third lens has positive optical power, and its object side surface is a convex surface, and its image side surface is a convex surface. The spacer element group includes a second spacer element disposed on the image side surface of the second lens and in contact with the image side surface of the second lens.

[0079] The curvature radius R4 of the image side surface of the second lens, the curvature radius R5 of the object side surface of the third lens and the maximum thickness CP2 of the second spacer element can satisfy: 0.3<R5 / R4×CP2<0.9; the outer diameter D2s of the object side surface of the second spacer element, the outer diameter D2m of the image side surface of the second spacer element and the combined focal length f23 of the second lens and the third lens can satisfy: 2.5<(D2s+D2m) / f23<4.0. Reasonable configuration of the product of the ratio of the curvature radius of the object side surface of the third lens and the image side surface of the second lens and the maximum thickness of the second spacer element can constrain the shapes of the second lens and the third lens, reduce the sensitivity of the second lens and the third lens, and reduce stray light; at the same time, by limiting the ratio of the sum of the outer diameters of the object side surface and the image side surface of the second spacer element to the combined focal length of the second lens and the third lens, the step difference between the second lens and the third lens can be constrained within a reasonable range, which is conducive to improving the assembly stability of the optical camera lens, improving the reliability of the optical camera lens, and reducing the aberration of the edge field of view.

[0080] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical camera lens can be changed to obtain the various results and advantages described in this specification.

[0081] Specific embodiments of the optical camera lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0082] Example 1

[0083] The following reference Figure 3 An optical imaging lens according to Embodiment 1 of the present application is described.

[0084] like Figure 3 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis.

[0085] The first lens E1 has negative focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, and its image side surface is convex. The seventh lens E7 has negative focal power, and its object side surface S12 is concave, and its image side surface S13 is convex. In the example, a filter may be further provided between the seventh lens E7 and the imaging surface S16 (not shown), and the filter has an object side surface S14 (not shown) and an image side surface S15 (not shown). Light from an object passes through the surfaces S1 to S15 in sequence and is finally imaged on the imaging surface S16.

[0086] Table 2 shows the basic parameters of the optical camera lens of Example 1, wherein the units of the curvature radius, thickness / distance and focal length are all millimeters (mm).

[0087]

[0088] Table 2

[0089] In this embodiment, the combined focal length f23 of the second lens and the third lens is 7.44 mm, and the combined focal length f67 of the sixth lens and the seventh lens is 15.35 mm.

[0090] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0091]

[0092] 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 inverse of the curvature radius R in Table 2 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 3 shows the high-order coefficients A4, A5 of each aspheric mirror surface S1-S14 that can be used in Example 1. 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A26 , A 28 and A 30 .

[0093] Face number A4 A6 A8 A10 A12 A14 A16 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0094] Table 3

[0095] Example 2

[0096] The following reference Figure 4 An optical imaging lens according to Embodiment 2 of the present application is described.

[0097] like Figure 4 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group includes a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0098] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 1, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 2, and the aspheric coefficient table is the same as Table 3. The difference between this embodiment and Embodiment 1 is that the structural dimensions of at least some elements in the lens barrel and the spacer element group are different.

[0099] Example 3

[0100] The following reference Figure 5 An optical imaging lens according to Embodiment 3 of the present application is described.

[0101] like Figure 5 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group includes a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0102] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 1, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 2, and the aspheric coefficient table is the same as Table 3. The difference between this embodiment and Embodiment 1 is that the structural dimensions of at least some elements in the lens barrel and the spacer element group are different.

[0103] Fig. 6AThe axial chromatic aberration curve of the optical camera lens of Example 1, 2 or 3 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Figure 6B The astigmatism curve of the optical camera lens of Example 1, 2 or 3 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Fig. 6A and Figure 6B It can be seen that the optical camera lens of Example 1, 2 or 3 can achieve good imaging quality.

[0104] Example 4

[0105] The following reference Figure 7 An optical imaging lens according to Embodiment 4 of the present application is described.

[0106] like Figure 7 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. A stop STO is provided between the third lens E3 and the fourth lens E4. The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0107] The first lens E1 has negative power, and its object side surface S1 is convex, and its image side surface S2 is concave; the second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave; the third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex; the fourth lens E4 has negative power, and its object side surface S7 is concave, and its image side surface S8 is concave; the fifth lens E5 has positive power, and its object side surface S9 is concave, and its image side surface S10 is convex; the sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface is convex; the seventh lens E7 has negative power, and its object side surface S12 is concave, and its image side surface S13 is convex. In the example, a filter may be further provided between the seventh lens E7 and the imaging surface S16 (not shown), and the filter has an object side surface S14 (not shown) and an image side surface S15 (not shown). Light from an object passes through the surfaces S1 to S15 in sequence and is finally imaged on the imaging surface S16.

[0108] Table 4 shows the basic parameter table of the optical lens assembly of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0109]

[0110]

[0111] Table 4

[0112] In this embodiment, the combined focal length f23 of the second lens and the third lens is 5.10 mm, and the combined focal length f67 of the sixth lens and the seventh lens is 9.25 mm.

[0113] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces. Table 5 lists the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 4. 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0114] Face number A4 A6 A8 A10 A12 A14 A16 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0115] Table 5

[0116] Example 5

[0117] The following reference Figure 8 The optical camera lens according to Example 5 of the present application is described.

[0118] like Figure 8 , the optical camera lens comprises a lens barrel, a spacer element group and an optical lens group. The optical lens group comprises a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group comprises a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0119] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 4, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 4, and the aspheric coefficient table is the same as Table 5. The difference between this embodiment and Embodiment 4 is that the structural dimensions of at least some elements in the lens barrel and the spacer element group are different.

[0120] Example 6

[0121] The following reference Fig. 9An optical imaging lens according to Embodiment 6 of the present application is described.

[0122] like Fig. 9 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group includes a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0123] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 4, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 4, and the aspheric coefficient table is the same as Table 5. The difference between this embodiment and Embodiment 4 is that the structural dimensions of at least some elements in the lens barrel and the spacer element group are different.

[0124] Fig. 10A The axial chromatic aberration curve of the optical camera lens of Example 4, 5 or 6 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Fig. 10B The astigmatism curve of the optical camera lens of Example 4, 5 or 6 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Fig. 10A and Fig. 10B It can be seen that the optical camera lens of Example 4, 5 or 6 can achieve good imaging quality.

[0125] Example 7

[0126] The following reference Fig.11 An optical imaging lens according to Embodiment 7 of the present application is described.

[0127] like Fig.11 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. A stop STO is provided between the third lens E3 and the fourth lens E4. The spacer element group may include a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0128] The first lens E1 has negative power, and its object side surface S1 is convex, and its image side surface S2 is concave; the second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave; the third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is convex; the fourth lens E4 has negative power, and its object side surface S7 is concave, and its image side surface S8 is concave; the fifth lens E5 has positive power, and its object side surface S9 is concave, and its image side surface S10 is convex; the sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface is convex; the seventh lens E7 has negative power, and its object side surface S12 is concave, and its image side surface S13 is convex. In the example, a filter may be further provided between the seventh lens E7 and the imaging surface S16 (not shown), and the filter has an object side surface S14 (not shown) and an image side surface S15 (not shown). Light from an object passes through the surfaces S1 to S15 in sequence and is finally imaged on the imaging surface S16.

[0129] Table 6 shows the basic parameter table of the optical lens assembly of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0130]

[0131]

[0132] Table 6

[0133] In this embodiment, the combined focal length f23 of the second lens and the third lens is 6.28 mm, and the combined focal length f67 of the sixth lens and the seventh lens is 14.59 mm.

[0134] In Example 7, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces. Table 7 lists the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 7. 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0135]

[0136]

[0137] Table 7

[0138] Example 8

[0139] The following reference Fig.12 The optical camera lens according to Example 8 of the present application is described.

[0140] like Fig.12 , the optical camera lens comprises a lens barrel, a spacer element group and an optical lens group. The optical lens group comprises a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group comprises a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0141] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 7, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 6, and the aspheric coefficient table is the same as Table 7. The difference between this embodiment and Embodiment 7 is that the structure size of at least part of the elements in the lens barrel and the spacer element group is different.

[0142] Example 9

[0143] The following reference Fig.13 An optical imaging lens according to Embodiment 9 of the present application is described.

[0144] like Fig.13 As shown, the optical camera lens includes a lens barrel, a spacer element group and an optical lens group. The optical lens group includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 arranged in sequence from the object side to the image side along the optical axis. The spacer element group includes a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4 and a fifth spacer element P5.

[0145] The structure of the optical lens group of this embodiment is the same as that of the optical lens group of Embodiment 7, that is, the basic parameter table of the optical camera lens of this embodiment is the same as Table 6, and the aspheric coefficient table is the same as Table 7. The difference between this embodiment and Embodiment 7 is that the structural dimensions of at least some elements in the lens barrel and the spacer element group are different.

[0146] Fig.14A The axial chromatic aberration curve of the optical camera lens of Example 7, 8 or 9 is shown, which indicates the deviation of the focusing point of light of different wavelengths after passing through the optical camera lens. Fig. 14BThe astigmatism curve of the optical camera lens of Example 7, 8 or 9 is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Fig.14A and Fig. 14B It can be seen that the optical camera lens of Example 7, 8 or 9 can achieve good imaging quality.

[0147] In summary, Table 8 gives the values ​​of the parameters f1, f2, f3, f4, f5, f23, and f67 of each embodiment in Embodiment 1 to Embodiment 9.

[0148] Example parameters 1 2 3 4 5 6 7 8 9 f1(mm) -9.91 -9.91 -9.91 -7.32 -7.32 -7.32 -9.97 -9.97 -9.97 f2(mm) 37.91 37.91 37.91 14.97 14.97 14.97 14.66 14.66 14.66 f3(mm) 8.43 8.43 8.43 5.90 5.90 5.90 8.61 8.61 8.61 f4(mm) -8.28 -8.28 -8.28 -4.71 -4.71 -4.71 -6.35 -6.35 -6.35 f5(mm) 9.90 9.90 9.90 7.85 7.85 7.85 9.64 9.64 9.64 f67(mm) 15.35 15.35 15.35 9.25 9.25 9.25 14.59 14.59 14.59 f23(mm) 7.44 7.44 7.44 5.10 5.10 5.10 6.28 6.28 6.28

[0149] Table 8

[0150] Table 9 shows the values ​​of the d1s, d1m, D1s, D1m, d2m, D2s, D2m, d4s, d4m, D4s, D4m, d5s, D5s, CP1, CP2, CP5, EP01, EP12 and EP45 parameters of each of Examples 1-9.

[0151] Parameters / Examples 1 2 3 4 5 6 7 8 9 d1s(mm) 7.914 7.154 7.154 6.553 7.322 6.633 7.854 7.859 7.883 d1m(mm) 7.373 7.154 7.154 6.553 7.132 6.633 7.854 7.859 7.883 D1s(mm) 10.847 12.024 10.992 11.675 11.640 12.126 12.713 12.991 13.302 D1m(mm) 10.653 12.024 10.992 11.675 11.766 12.126 12.713 12.991 13.302 d2m(mm) 6.164 6.780 6.704 5.131 5.298 5.610 5.795 6.001 6.325 D2s(mm) 10.896 10.009 10.374 7.812 8.447 8.263 11.456 10.383 10.662 D2m(mm) 10.735 10.496 10.843 8.733 9.114 9.340 12.390 10.672 11.043 d4s(mm) 6.354 6.354 6.354 4.085 4.085 4.085 6.116 6.110 6.213 d4m(mm) 6.354 6.354 6.354 4.085 4.085 4.085 6.116 6.110 6.213 D4s(mm) 10.827 10.516 11.252 8.318 8.699 8.770 13.113 11.219 11.499 D4m(mm) 10.827 10.516 11.252 8.318 8.699 8.770 13.113 11.219 11.499 d5s(mm) 7.786 7.841 7.705 5.548 5.548 6.013 7.724 7.815 7.815 D5s(mm) 10.005 9.736 10.429 7.718 7.563 8.009 12.131 10.240 10.552 CP1(mm) 0.693 0.030 0.030 0.033 0.433 0.033 0.030 0.040 0.061 CP2(mm) 0.515 0.516 0.517 1.038 1.038 0.998 1.026 1.020 0.991 CP5(mm) 2.560 2.588 2.561 2.560 2.599 2.560 2.940 2.940 2.925 EP01(mm) 2.741 3.507 2.826 3.705 3.305 3.705 3.285 4.147 4.126 EP12(mm) 1.390 1.391 1.392 1.505 1.504 1.505 1.516 1.517 1.516 EP45(mm) 0.902 0.900 0.902 1.006 1.006 1.000 0.899 0.898 0.897

[0152] Table 9

[0153] The conditional expressions in Examples 1 to 9 satisfy the relationship shown in Table 10.

[0154] Conditional / Example 1 2 3 4 5 6 7 8 9 (EP01 / CT1)+(EP01 / T12) 6.91 8.85 7.13 5.56 4.96 5.56 4.93 6.22 6.19 (V1-V2)×d1s / f1 -32.10 -29.02 -29.02 -9.84 -11.00 -9.96 -8.66 -8.67 -8.69 CT2 / (CP1+EP12) 0.78 1.14 1.14 1.30 1.04 1.30 1.39 1.38 1.37 D1s / R2+D1m / R3 3.15 3.51 3.21 4.21 4.22 4.38 3.60 3.68 3.77 f2 / (d1m×N2) 2.64 2.72 2.72 1.17 1.08 1.16 0.96 0.96 0.95 R5 / R4×CP2 0.39 0.39 0.39 0.81 0.81 0.78 0.75 0.74 0.72 (D2s+D2m) / f23 2.91 2.76 2.85 3.24 3.44 3.45 3.80 3.35 3.46 f3×d2m×N3 / R6 -3.22 -3.55 -3.51 -2.78 -2.87 -3.04 -2.53 -2.62 -2.76 R7×N4 / D4s -2.45 -2.52 -2.36 -1.43 -1.37 -1.35 -1.10 -1.28 -1.25 R8 / (D4s-d4s) 3.01 3.24 2.75 2.43 2.23 2.20 2.31 3.17 3.06 (f5×N5) / (D4m-d4m) 4.25 4.57 3.88 3.56 3.27 3.22 2.65 3.62 3.50 (CT4+CT5+T45) / EP45 4.38 4.39 4.38 3.39 3.39 3.41 4.21 4.22 4.22 (D5s-d5s)×V5 / R10 -9.80 -8.37 -12.03 -13.28 -12.33 -12.22 -22.21 -12.22 -13.79 (V6-V7)×CP5 / f67 2.97 3.00 2.97 4.93 5.00 4.93 3.59 3.59 3.57

[0155] Table 10

[0156] The above description is only a preferred embodiment of the present application to illustrate the technical principles used. Personnel in the technical field should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present application, and are not used to limit the present application. Without departing from the scope of the present application, the present application may have various changes and improvements, and these improvements and changes fall within the scope of the present application to be protected, such as the above features and the technical features disclosed in the present application (but not limited to) with similar functions are replaced with each other to form a technical solution.

Claims

1. An optical camera lens, characterized in that: include: An optical lens group, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; wherein the third lens has positive power, and its object side surface is convex, and its image side surface is convex; a spacer element group including a second spacer element disposed on the image side surface of the second lens and in contact with the image side surface of the second lens; and A lens barrel, wherein the optical lens group and the spacer element group are placed in the lens barrel; Wherein, the optical camera lens has seven lenses with optical focal length; The curvature radius R4 of the image side surface of the second lens, the curvature radius R5 of the object side surface of the third lens and the maximum thickness CP2 of the second spacer element satisfy: 0.3 mm < R5 / R4×CP2 < 0.9 mm; The inner diameter d2m of the image side surface of the second spacer element, the curvature radius R6 of the image side surface of the third lens, the effective focal length f3 of the third lens and the refractive index N3 of the third lens satisfy: -3.6mm<f3×d2m×N3 / R6<-2.5mm.

2. The optical camera lens according to claim 1, wherein: An outer diameter D2s of the object side surface of the second spacer element, an outer diameter D2m of the image side surface of the second spacer element, and a combined focal length f23 of the second lens and the third lens satisfy: 2.5<(D2s+D2m) / f23<4.

0.

3. The optical camera lens according to claim 1, wherein: The spacer element group further includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, The interval EP01 between the object side end surface of the lens barrel and the first spacing element along the optical axis, the center thickness CT1 of the first lens on the optical axis, and the air interval T12 between the first lens and the second lens on the optical axis satisfy: 4.5<(EP01 / CT1)+(EP01 / T12)<9.

0.

4. The optical camera lens according to claim 1, wherein: The spacer element group further includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, The Abbe number V1 of the first lens, the Abbe number V2 of the second lens, the effective focal length f1 of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -11.0≤(V1-V2)×d1s / f1<-7.

5.

5. The optical camera lens according to claim 1, wherein: The spacer element group further includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, The center thickness CT2 of the second lens on the optical axis, the maximum thickness CP1 of the first spacer element, and the interval EP12 between the first spacer element and the second spacer element along the optical axis satisfy: 0.7<CT2 / (CP1+EP12)<1.

4.

6. The optical camera lens according to claim 1, wherein: The spacer element group further includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, The outer diameter D1s of the object side surface of the first spacer element, the outer diameter D1m of the image side surface of the first spacer element, the curvature radius R2 of the image side surface of the first lens and the curvature radius R3 of the object side surface of the second lens satisfy: 3.0<D1s / R2+D1m / R3<4.

5.

7. The optical camera lens according to claim 1, wherein: The spacer element group further includes a first spacer element disposed on the image side surface of the first lens and in contact with the image side surface of the first lens; wherein, The effective focal length f2 of the second lens, the refractive index N2 of the second lens, and the inner diameter d1m of the image-side surface of the first spacer element satisfy: 0.9<f2 / (d1m×N2)<2.

8.

8. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein, The curvature radius R7 of the object-side surface of the fourth lens, the refractive index N4 of the fourth lens and the outer diameter D4s of the object-side surface of the fourth spacer element satisfy: -2.6<R7×N4 / D4s<-1.

0.

9. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein, The curvature radius R8 of the image side surface of the fourth lens, the outer diameter D4s of the object side surface of the fourth spacer element, and the inner diameter d4s of the object side surface of the fourth spacer element satisfy: 2.0<R8 / (D4s-d4s)<3.

5.

10. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens; wherein, The outer diameter D4m of the image side surface of the fourth spacer element, the inner diameter d4m of the image side surface of the fourth spacer element, the effective focal length f5 of the fifth lens and the refractive index N5 of the fifth lens satisfy: 2.5<(f5×N5) / (D4m-d4m)<4.

6.

11. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fourth spacer element disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens, and a fifth spacer element disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein, The interval EP45 between the fourth spacer element and the fifth spacer element along the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 3.0<(CT4+CT5+T45) / EP45<4.

5.

12. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fifth spacer element disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein, The outer diameter D5s of the object side surface of the fifth spacer element, the inner diameter d5s of the object side surface of the fifth spacer element, the Abbe number V5 of the fifth lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: -22.5<(D5s-d5s)×V5 / R10<-8.

0.

13. The optical camera lens according to any one of claims 1 to 7, characterized in that: The spacer element group further includes a fifth spacer element disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein, The maximum thickness CP5 of the fifth spacing element, the Abbe number V6 of the sixth lens, the Abbe number V7 of the seventh lens and the combined focal length f67 of the sixth lens and the seventh lens satisfy: 2.5<(V6-V7)×CP5 / f67≤5.0.

Images