Optical camera lens

Abstract

The application provides an optical camera lens. The optical camera lens comprises, in order from the object side to the image side: a first lens with positive refractive power; a prism; a second lens with positive refractive power; a third lens with negative refractive power, the object side surface of the third lens being concave; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with positive refractive power, the object side surface of the sixth lens being convex, and the image side surface being concave; the object side surface and the image side surface of the first lens to the sixth lens are aspheric surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy 3.0 < f1 / f2 < 5.1; the air separation T34 of the third lens and the fourth lens on the optical axis and the air separation T23 of the second lens and the third lens on the optical axis satisfy 0.5 < T34 / T23 < 2.3. The application solves the problem that the optical camera lens in the prior art is difficult to realize a large aperture and low aberration under the premise of meeting a small height.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging devices, in particular to an optical camera lens. BACKGROUND

[0002] With the unceasing improvement of the public's requirements for camera quality, a single optical camera lens has been unable to meet the needs of users and the market, and currently, devices such as smart phones are equipped with multiple lens modules to meet different use environments. Among them, a long-focus lens can have strong control ability over a local picture in terms of framing and composition, can "zoom in and enlarge" the subject, and avoid the interference of clutter elements on the picture; it can also bring a shallow depth-of-field picture effect, blurring the background or foreground, and highlighting the subject, and has a very strong purpose in close-up shooting such as shooting people and objects. However, the current type of lens is limited in height due to the thickness of the application terminal, and it is difficult to achieve a large aperture. After introducing a large aperture, the optimization problems such as aberration and field curvature are also difficult points in terms of imaging display.

[0003] That is, the optical camera lens in the prior art has the problem of being difficult to achieve a large aperture and low aberration under the premise of meeting a small height. SUMMARY

[0004] The main purpose of the present application is to provide an optical camera lens to solve the problem of the optical camera lens in the prior art that is difficult to achieve a large aperture and low aberration under the premise of meeting a small height.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an optical camera lens is provided, which comprises, in order from the object side to the image side: a first lens with positive refractive power; a prism; a second lens with positive refractive power; a third lens with negative refractive power, the object side surface of the third lens being concave; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with positive refractive power, the object side surface of the sixth lens being convex, and the image side surface being concave; adjacent two lenses among the first to sixth lenses have an air gap therebetween, and the object side surface and the image side surface of the first to sixth lenses are aspherical surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 3.0 < f1 / f2 < 5.1; the air gap T34 of the third lens and the fourth lens on the optical axis and the air gap T23 of the second lens and the third lens on the optical axis satisfy: 0.5 < T34 / T23 < 2.3.

[0006] Further, the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfy: 1.0 < f / |f23| < 2.5.

[0007] Further, a radius of curvature R1 of the object side surface of the first lens, a radius of curvature R2 of the image side surface of the first lens, and a central thickness CT1 of the first lens on the optical axis satisfy: 2.8 < (R2-R1) / CT1 < 4.5.

[0008] Further, an on-axis distance TTL from the object side surface of the first lens to the imaging surface, an effective focal length f of the optical camera lens, and a relative F number fno of the optical camera lens satisfy: 3.5 < TTL / f*fno < 4.8.

[0009] Further, an on-axis distance BFL from the image side surface of the last lens of the optical camera lens to the imaging surface and a half of a diagonal length of an effective pixel area on the imaging surface ImgH satisfy: 1.8 < BFL / ImgH < 3.0.

[0010] Further, a central thickness CT4 of the fourth lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, and an air separation T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.9 < (CT4+CT5) / T45 < 17.5.

[0011] Further, an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, a radius of curvature R2 of the image side surface of the first lens, and a radius of curvature R3 of the object side surface of the second lens satisfy: 3.40 < (f1*f2) / (R2*R3) < 6.75.

[0012] Further, an Abbe number V3 of the third lens, an Abbe number V5 of the fifth lens, and an Abbe number V6 of the sixth lens satisfy: 1.3 < V6 / |V5-V3| < 6.75.

[0013] Further, a combined focal length f45 of the fourth lens and the fifth lens and an effective focal length f6 of the sixth lens satisfy: -1.0 < f45 / f6 < 3.0.

[0014] Further, a radius of curvature R11 of the object side surface of the sixth lens, a radius of curvature R12 of the image side surface of the sixth lens, and a central thickness CT6 of the sixth lens on the optical axis satisfy: 5.8 < (R11+R12) / CT6 < 9.6.

[0015] Further, an on-axis distance SL from the stop to the imaging surface and a maximum value ATm of air separations on the optical axis between two adjacent lenses with refractive power from the second lens to the sixth lens satisfy: 17.0 < SL / ATm < 39.0.

[0016] Further, a distance SD from the stop to an image side surface of the last lens of the optical image capturing lens, an air gap T45 on the optical axis between the fourth lens and the fifth lens, and a central thickness CT5 of the fifth lens on the optical axis satisfy: 4.0 < SD / (T45+CT5) < 6.8.

[0017] Further, an on-axis distance TTL from the object side surface of the first lens to the image plane and an entrance pupil diameter EPD of the optical image capturing lens satisfy: 3.4 < TTL / EPD < 4.9.

[0018] Further, an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and an effective focal length f of the optical image capturing lens satisfy: 1.9 < (f1+f2) / f < 3.0.

[0019] Further, an effective focal length f1 of the first lens and an effective focal length f6 of the sixth lens satisfy: 3.0 < f1 / f6 < 4.0.

[0020] Further, a curvature radius R1 of the object side surface of the first lens and a curvature radius R2 of the image side surface of the first lens satisfy: -5.0 < (R1+R2) / (R1-R2) < -3.5.

[0021] According to another aspect of the present application, there is provided an optical image capturing lens comprising, in order from an object side to an image side: a first lens having positive refractive power; a prism; a second lens having positive refractive power; a third lens having negative refractive power, an object side surface of the third lens being concave; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power, an object side surface of the sixth lens being convex, and an image side surface being concave; adjacent two lenses among the first to sixth lenses having air gaps therebetween, and the object side surfaces and the image side surfaces of the first to sixth lenses being aspherical; an effective focal length f1 of the first lens and an effective focal length f2 of the second lens satisfying: 3.0 < f1 / f2 < 5.1; and an effective focal length f of the optical image capturing lens and a combined focal length f23 of the second and third lenses satisfying: 1.0 < f / |f23| < 2.5.

[0022] Further, an air gap T34 on the optical axis between the third and fourth lenses and an air gap T23 on the optical axis between the second and third lenses satisfy: 0.5 < T34 / T23 < 2.3; and a curvature radius R1 of the object side surface of the first lens, a curvature radius R2 of the image side surface of the first lens, and a central thickness CT1 of the first lens on the optical axis satisfy: 2.8 < (R2-R1) / CT1 < 4.5.

[0023] Further, an on-axis distance TTL from an object side surface of the first lens to the imaging surface, an effective focal length f of the optical camera lens, and a relative F number fno of the optical camera lens satisfy: 3.5 < TTL / f*fno < 4.8.

[0024] Further, an on-axis distance BFL from an image side surface of the last lens of the optical camera lens to the imaging surface and a half of a diagonal length of an effective pixel area on the imaging surface ImgH satisfy: 1.8 < BFL / ImgH < 3.0.

[0025] Further, a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, and an air separation T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.9 < (CT4+CT5) / T45 < 17.5.

[0026] Further, an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, 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: 3.40 < (f1*f2) / (R2*R3) < 6.75.

[0027] Further, an Abbe number V3 of the third lens, an Abbe number V5 of the fifth lens, and an Abbe number V6 of the sixth lens satisfy: 1.3 < V6 / |V5-V3| < 6.75.

[0028] Further, a combined focal length f45 of the fourth lens and the fifth lens and an effective focal length f6 of the sixth lens satisfy: -1.0 < f45 / f6 < 3.0.

[0029] Further, a curvature radius R11 of the object side surface of the sixth lens, a curvature radius R12 of the image side surface of the sixth lens, and a center thickness CT6 of the sixth lens on the optical axis satisfy: 5.8 < (R11+R12) / CT6 < 9.6.

[0030] Further, an on-axis distance SL from the stop to the imaging surface and a maximum value ATm of air separations on the optical axis between two adjacent lenses with refractive power among the second lens to the sixth lens satisfy: 17.0 < SL / ATm < 39.0.

[0031] Further, a distance SD from the stop to the image side surface of the last lens of the optical camera lens, an air separation T45 of the fourth lens and the fifth lens on the optical axis, and a center thickness CT5 of the fifth lens on the optical axis satisfy: 4.0 < SD / (T45+CT5) < 6.8.

[0032] Further, an on-axis distance TTL from an object side surface of the first lens to an imaging surface and an entrance pupil diameter EPD of the optical camera lens satisfy: 3.4 < TTL / EPD < 4.9.

[0033] Further, an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and an effective focal length f of the optical camera lens satisfy: 1.9 < (f1 + f2) / f < 3.0.

[0034] Further, an effective focal length f1 of the first lens and an effective focal length f6 of the sixth lens satisfy: 3.0 < f1 / f6 < 4.0.

[0035] Further, a curvature radius R1 of the object side surface of the first lens and a curvature radius R2 of the image side surface of the first lens satisfy: -5.0 < (R1 + R2) / (R1 - R2) < -3.5.

[0036] The optical camera lens comprises, in order from the object side to the image side, a first lens with positive refractive power, a prism, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with refractive power, a fifth lens with refractive power, and a sixth lens with positive refractive power; the object side surface of the third lens is a concave surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; there is an air gap between any two adjacent lenses among the first lens to the sixth lens, and the object side surface and the image side surface of the first lens to the sixth lens are aspheric surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 3.0 < f1 / f2 < 5.1; the air gap T34 on the optical axis between the third lens and the fourth lens and the air gap T23 on the optical axis between the second lens and the third lens satisfy: 0.5 < T34 / T23 < 2.3.

[0037] By reasonably allocating the refractive power and surface shape of each lens, and by reasonably constraining the focal length of the first lens and the second lens, the air gap on the optical axis between the third lens and the fourth lens, and the air gap on the optical axis between the second lens and the third lens, it is beneficial to allocate a larger refractive power ratio of the first lens and the second lens, beneficial to increase the aperture, helpful to have a larger refraction angle of light at the second lens, reduce the height of light on the lens, realize the function of reducing the height of the optical camera lens, at the same time, the ratio of the gap between the third lens and the fourth lens and the second lens and the third lens not only reasonably constrains the size of the front end of the optical camera lens to meet the small height, but also balances the field curvature in the sagittal and meridional planes, optimizes the aberration, and improves the imaging quality. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, the illustrative embodiments of the application, and their description, serve to explain the application. In the drawings:

[0039] Figure 1 A structural schematic view of the optical camera lens of the embodiment one of the present application is shown;

[0040] Figures 2 to 5 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 1 are shown respectively;

[0041] Figure 6 A structural schematic view of the optical camera lens of the embodiment two of the present application is shown;

[0042] Figures 7 to 10 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 6 are shown respectively;

[0043] Figure 11 A structural schematic view of the optical camera lens of the embodiment three of the present application is shown;

[0044] Figures 12 to 15 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 11 are shown respectively;

[0045] Figure 16 A structural schematic view of the optical camera lens of the embodiment four of the present application is shown;

[0046] Figures 17 to 20 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 16 are shown respectively;

[0047] Figure 21 A structural schematic view of the optical camera lens of the embodiment five of the present application is shown;

[0048] Figures 22 to 25 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 21 are shown respectively;

[0049] Figure 26 A structural schematic view of the optical camera lens of the embodiment six of the present application is shown;

[0050] Figures 27 to 30 Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical camera lens in Figure 26 are shown respectively.

[0051] In the above drawings, reference numerals include the following:

[0052] E1, first lens; S1, object side surface of the first lens; S2, image side surface of the first lens; STO, stop; E2, second lens; S3, object side surface of the second lens; S4, image side surface of the second lens; E3, third lens; S5, object side surface of the third lens; S6, image side surface of the third lens; E4, fourth lens; S7, object side surface of the fourth lens; S8, image side surface of the fourth lens; E5, fifth lens; S9, object side surface of the fifth lens; S10, image side surface of the fifth lens; E6, sixth lens; S11, object side surface of the sixth lens; S12, image side surface of the sixth lens; E7, protective glass; S13, object side surface of the protective glass; S14, image side surface of the protective glass; S15, imaging surface. DETAILED DESCRIPTION

[0053] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, unless otherwise specified. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0054] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0055] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0056] It should be noted that, in the present 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, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0057] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for the convenience of illustration. Specifically, the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0058] In the present disclosure, the near-axial region refers to a 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 near-axial 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 near-axial region. The surface of each lens near the object side is the object side surface of the lens, and the surface of each lens near the image side is the image side surface of the lens. The judgment of the surface shape in the near-axial region can be based on the judgment method of a person skilled in the art. The convexity or concavity is judged by the positive or negative of the R value (R refers to the radius of curvature in the near-axial region, usually refers to the R value in the lens data of the optical software). For the object side surface, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave. For the image side surface, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[0059] In order to solve the problem that the optical camera lens in the prior art is difficult to realize large aperture and low aberration under the premise of meeting small height, an optical camera lens is provided.

[0060] As shown in the optional embodiment of the present application. Figures 1 to 30 As shown in the optional embodiment of the present application.

[0061] The optical camera lens comprises, in order from the object side to the image side, a first lens with positive refractive power, a prism, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with refractive power, a fifth lens with refractive power, and a sixth lens with positive refractive power; the object side surface of the third lens is concave; the object side surface of the sixth lens is convex, and the image side surface is concave; there is an air gap between any two adjacent lenses among the first to sixth lenses, and the object side surface and the image side surface of the first to sixth lenses are aspherical surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy 3.0 < f1 / f2 < 5.1; the air gap T34 of the third lens and the fourth lens on the optical axis and the air gap T23 of the second lens and the third lens on the optical axis satisfy 0.5 < T34 / T23 < 2.3.

[0062] By reasonably allocating the refractive power and surface shape of each lens, and by simultaneously constraining the air gap of the first lens and the second lens on the optical axis, the air gap of the third lens and the fourth lens on the optical axis, and the air gap of the second lens and the third lens on the optical axis, it is beneficial to allocate a larger refractive power ratio of the first lens and the second lens, to increase the aperture, to help the light rays have a larger refraction angle at the second lens, to reduce the height of the light rays on the lens, to realize the function of reducing the height of the optical camera lens, and to balance the field curvature in the sagittal and meridional planes, to optimize the aberration, and to improve the imaging quality.

[0063] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0064] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0065] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0066] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0067] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0068] In the embodiment, a ratio between the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfies: 1.0 < f / |f23| < 2.5. By constraining the ratio between the effective focal length of the optical camera lens and the combined focal length of the second lens and the third lens, the power distribution of the second lens and the third lens is balanced, the imaging aberration is improved, and the imaging quality is improved.

[0069] In the embodiment, the Abbe number V3 of the third lens, the Abbe number V5 of the fifth lens and the Abbe number V6 of the sixth lens satisfy: 1.3 < V6 / |V5-V3| < 6.75. By reasonably distributing the materials of the third lens, the fifth lens and the sixth lens, the chromatic aberration is improved by mutual cooperation.

[0070] In the embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length f6 of the sixth lens satisfy: -1.0 < f45 / f6 < 3.0. By reasonably distributing the refractive powers of the fourth lens, the fifth lens and the sixth lens, the chromatic aberration is improved by mutual cooperation.

[0071] In the embodiment, the radius of curvature R11 of the object side surface of the sixth lens, the radius of curvature R12 of the image side surface of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis satisfy: 5.8 < (R11+R12) / CT6 < 9.6. By adjusting the surface shape of the sixth lens, the exit angle of light is reduced, and the sensitivity of the lens is reduced.

[0072] In the embodiment, the on-axis distance SL from the stop to the imaging surface and the maximum value ATm of the air gap on the optical axis between two adjacent lenses with refractive power in the second lens to the sixth lens satisfy: 17.0 < SL / ATm < 39.0. The above constraint can reduce the distance between lenses, reduce the difficulty of assembly process, and improve the stability of lens assembly.

[0073] In the embodiment, the distance SD from the stop to the image side surface of the last lens of the optical imaging lens, the air gap T45 of the fourth lens and the fifth lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy: 4.0 < SD / (T45+CT5) < 6.8. Satisfying this condition is conducive to compressing the volume of the optical imaging lens body, increasing the depth of field range, and ensuring better imaging quality for different object distances.

[0074] In the embodiment, the on-axis distance TTL from the object side surface of the first lens to the imaging surface and the entrance pupil diameter EPD of the optical imaging lens satisfy: 3.4 < TTL / EPD < 4.9. Balancing the ratio of TTL and EPD can improve the imaging quality while reducing the volume of the entire optical imaging lens.

[0075] In the embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens and the effective focal length f of the optical imaging lens satisfy: 1.9 < (f1+f2) / f < 3.0. Distributing the positive and negative refractive powers of the first lens and the second lens can balance the on-axis chromatic aberration.

[0076] In the embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens satisfy: 3.0 < f1 / f6 < 4.0. Reasonable distribution of the optical power of the first lens and the sixth lens can reduce the aberration of the imaging surface.

[0077] In the embodiment, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: -5.0 < (R1+R2) / (R1-R2) < -3.5. Satisfying the above formula constraint can weaken the ghost image intensity generated by the first lens.

[0078] As shown in FIG. 1, in another optional embodiment of the present application, Figures 1 to 30

[0079] The optical imaging lens sequentially includes, from the object side to the image side: a first lens with positive optical power; a prism; a second lens with positive optical power; a third lens with negative optical power, the object side surface of the third lens is concave; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power, the object side surface of the sixth lens is convex, and the image side surface is concave; the adjacent two lenses among the first lens to the sixth lens have an air gap, and the object side surface and the image side surface of the first lens to the sixth lens are aspheric surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 3.0 < f1 / f2 < 5.1; and the effective focal length f of the optical imaging lens and the combined focal length f23 of the second lens and the third lens satisfy: 1.0 < f / |f23| < 2.5.

[0080] By reasonably distributing the optical power and surface type of each lens, and by simultaneously constraining the focal length of the first lens, the second lens and the third lens and the effective focal length of the optical imaging lens, it is beneficial to distribute the first lens and the second lens to obtain a larger optical power ratio, to increase the aperture, to help the light rays have a larger refraction angle at the second lens, to reduce the height of the light rays on the lens, to realize the function of reducing the height of the optical imaging lens, and to balance the optical power distribution of the second lens and the third lens by constraining the ratio of the effective focal length of the optical imaging lens and the combined focal length of the second lens and the third lens, which is beneficial to improve the imaging aberration and to improve the imaging quality.

[0081] In the embodiment, the air gap T34 of the third lens and the fourth lens on the optical axis and the air gap T23 of the second lens and the third lens on the optical axis satisfy: 0.5 < T34 / T23 < 2.3. The ratio of the gap of the third lens and the fourth lens to the second lens and the third lens not only reasonably constrains the size of the front end part of the optical imaging lens to satisfy the small height, but also balances the field curvature in the sagittal and meridional planes, optimizes the aberration, and improves the imaging quality.

[0082] ​In the embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the central thickness CT1 of the first lens on the optical axis satisfy: 2.8 < (R2-R1) / CT1 < 4.5. By adjusting the face type and thickness of the two surfaces of the first lens, the light entering amount is increased, and the chip photosensitive efficiency is improved.

[0083] In the embodiment, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the effective focal length f of the optical camera lens, and the relative F number fno of the optical camera lens satisfy: 3.5 < TTL / f*fno < 4.8. Satisfying the condition formula is beneficial to balance the fno and TTL of the optical camera lens, increase the aperture while appropriately increasing the TTL, and reduce the aberration introduced by the large aperture.

[0084] In the embodiment, the on-axis distance BFL from the image side surface of the last lens of the optical camera lens to the imaging surface and the half ImgH of the diagonal line length of the effective pixel area on the imaging surface satisfy: 1.8 < BFL / ImgH < 3.0. By constraining the ratio of the optical back focus and the image height, the incident angle of the light entering the imaging surface is reduced, and the chip photosensitive efficiency is improved.

[0085] In the embodiment, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the air gap T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.9 < (CT4+CT5) / T45 < 17.5. By adjusting the ratio of the thickness and gap of the fourth lens and the fifth lens, the lens thickness and gap are reasonably distributed, and the performance and assembly stability of the optical camera lens can be improved.

[0086] In the embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the radius of curvature R2 of the image side surface of the first lens, and the radius of curvature R3 of the object side surface of the second lens satisfy: 3.40 < (f1*f2) / (R2*R3) < 6.75. By constraining the ratio of the focal length and the curvature radius of the first lens and the second lens, the light entering amount is increased, the refractive angle of the light in the first lens and the second lens is reduced, the sensitivity of the lens is reduced, and the chip photosensitivity is improved.

[0087] In the embodiment, the Abbe number V3 of the third lens, the Abbe number V5 of the fifth lens, and the Abbe number V6 of the sixth lens satisfy: 1.3 < V6 / |V5-V3| < 6.75. By reasonably distributing the materials of the third lens, the fifth lens, and the sixth lens, it is beneficial to improve the chromatic aberration by mutual cooperation.

[0088] In the embodiment, a combination focal length f45 of the fourth lens and the fifth lens and an effective focal length f6 of the sixth lens satisfy: -1.0 < f45 / f6 < 3.0. Reasonable distribution of the refractive power of the fourth lens, the fifth lens and the sixth lens is conducive to mutual cooperation to improve chromatic aberration.

[0089] In the embodiment, a radius of curvature R11 of the object side surface of the sixth lens, a radius of curvature R12 of the image side surface of the sixth lens and a central thickness CT6 of the sixth lens on the optical axis satisfy: 5.8 < (R11+R12) / CT6 < 9.6. Adjusting the shape of the sixth lens surface reduces the light exit angle and reduces the lens sensitivity.

[0090] In the embodiment, an on-axis distance SL from the diaphragm to the imaging surface and a maximum value ATm of the air gap on the optical axis between two adjacent lenses with refractive power in the second lens to the sixth lens satisfy: 17.0 < SL / ATm < 39.0. The above constraint can reduce the distance between the lenses, reduce the difficulty of assembly process, and improve the stability of the lens assembly.

[0091] In the embodiment, a distance SD from the diaphragm to the image side surface of the last lens of the optical imaging lens, an air gap T45 of the fourth lens and the fifth lens on the optical axis and a central thickness CT5 of the fifth lens on the optical axis satisfy: 4.0 < SD / (T45+CT5) < 6.8. Satisfying this condition is conducive to compressing the volume of the optical imaging lens body, increasing the depth of field range, and ensuring better imaging quality at different object distances.

[0092] In the embodiment, an on-axis distance TTL from the object side surface of the first lens to the imaging surface and an entrance pupil diameter EPD of the optical imaging lens satisfy: 3.4 < TTL / EPD < 4.9. Balancing the ratio of TTL and EPD can improve the imaging quality while reducing the volume of the entire optical imaging lens.

[0093] In the embodiment, an effective focal length f1 of the first lens, an effective focal length f2 of the second lens and an effective focal length f of the optical imaging lens satisfy: 1.9 < (f1+f2) / f < 3.0. Distributing the positive and negative refractive power of the first lens and the second lens can balance the on-axis chromatic aberration.

[0094] In the embodiment, an effective focal length f1 of the first lens and an effective focal length f6 of the sixth lens satisfy: 3.0 < f1 / f6 < 4.0. Reasonable distribution of the refractive power of the first lens and the sixth lens can reduce the aberration of the imaging surface.

[0095] In the embodiment, the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens satisfy -5.0 < (R1+R2) / (R1-R2) < -3.5. Satisfying the constraint condition of the above formula can weaken the ghost image intensity generated by the first lens.

[0096] Optionally, the optical camera lens described above can further comprise a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0097] The optical camera lens in the present application can adopt multiple lenses, for example, six lenses as described above. By reasonably allocating the optical power, surface shape, central thickness of each lens, and on-axis distance between each lens, etc., the aperture of the optical camera lens can be effectively increased, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical camera lens is more conducive to production and processing and can be applied to portable electronic devices such as smartphones.

[0098] In the present application, at least one of the mirror surfaces of each lens is a non-spherical mirror surface. The characteristic of the non-spherical lens is that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike the spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, the non-spherical lens has better curvature radius characteristics, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After adopting the non-spherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0099] Since the non-spherical surface is obtained by rotating the meridional surface around the optical axis for one revolution, the structure has rotational symmetry, and in an ideal optical system, the meridional and sagittal aberrations can be well corrected; at the same time, due to its unique lens model, it can provide sufficient space for subsequent related adjustment, making the related structure and assembly process more flexible and not reducing the imaging quality too much.

[0100] However, those skilled in the art should understand that the number of lenses constituting the optical camera lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the present specification. For example, although six lenses are described as an example in the embodiments, the optical camera lens is not limited to including six lenses. If necessary, the optical camera lens can also include other numbers of lenses.

[0101] The specific surface shape and parameters of the optical camera lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0102] It should be noted that any one of the following embodiments 1 to 6 is applicable to all embodiments of the present application.

[0103] Embodiment 1

[0104] As shown in Figures 1 to 5 , an optical camera lens of the embodiment one of the present application is described. Figure 1 A schematic diagram of the optical camera lens structure of embodiment one is shown.

[0105] As shown in Figure 1 , the optical camera lens sequentially comprises a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protection glass E7 and an imaging surface S15 from the object side to the image side.

[0106] The first lens E1 has positive refractive power, the object side surface S1 of the first lens is a convex surface, and the image side surface S2 of the first lens is a concave surface. The second lens E2 has positive refractive power, the object side surface S3 of the second lens is a convex surface, and the image side surface S4 of the second lens is a convex surface. The third lens E3 has negative refractive power, the object side surface S5 of the third lens is a concave surface, and the image side surface S6 of the third lens is a concave surface. The fourth lens E4 has positive refractive power, the object side surface S7 of the fourth lens is a convex surface, and the image side surface S8 of the fourth lens is a concave surface. The fifth lens E5 has positive refractive power, the object side surface S9 of the fifth lens is a convex surface, and the image side surface S10 of the fifth lens is a convex surface. The sixth lens E6 has positive refractive power, the object side surface S11 of the sixth lens is a convex surface, and the image side surface S12 of the sixth lens is a concave surface. The protection glass E7 has an object side surface S13 and an image side surface S14 of the protection glass. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0107] In the present embodiment, the total effective focal length f of the optical camera lens is 17.19 mm, the total length TTL of the optical camera lens is 24.08 mm, the image height ImgH of the optical camera lens is 3.93 mm, the maximum half field of view HFOV of the optical camera lens is 12.56°, and the aperture number fno of the optical camera lens is 3.02.

[0108] Table 1 shows the basic structure parameter table of the optical camera lens of embodiment one, wherein the units of the curvature radius, thickness / distance are all millimeters (mm).

[0109]

[0110] Table 1

[0111] In embodiment one, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface type of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0112]

[0113] wherein x is the sag of the aspherical surface at a height of h along the optical axis from the vertex of the aspherical surface; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the curvature radius R in Table 1 above); k is the conic constant; and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below provides the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20 that can be used for the aspherical surfaces S1-S12 in Example One.

[0114]

[0115]

[0116] Table 2

[0117] Figure 2 An on-axis chromatic aberration curve of the optical camera lens of Example One is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical camera lens. Figure 3 An astigmatism curve of the optical camera lens of Example One is shown, which represents the meridional image curvature and sagittal image curvature. Figure 4 A distortion curve of the optical camera lens of Example One is shown, which represents the distortion size values corresponding to different field angles. Figure 5 A lateral chromatic aberration curve of the optical camera lens of Example One is shown, which represents the deviation of light rays on the imaging plane after passing through the optical camera lens at different image heights.

[0118] According to Figures 2 to 5 It can be seen that the optical camera lens of Example One can achieve good imaging quality.

[0119] Example Two

[0120] As Figures 6 to 10 shown, the optical camera lens of Example Two of the present application is described. In this and the following examples, for the sake of brevity, some similar descriptions as in Example One will be omitted. Figure 6 A schematic diagram of the structure of the optical camera lens of Example Two is shown.

[0121] As Figure 6 shown, the optical camera lens sequentially includes, from the object side to the image side, a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protective glass E7, and an imaging plane S15.

[0122] The first lens E1 has positive refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave. The second lens E2 has positive refractive power, the object side S3 of the second lens is convex, and the image side S4 of the second lens is concave. The third lens E3 has negative refractive power, the object side S5 of the third lens is concave, and the image side S6 of the third lens is convex. The fourth lens E4 has negative refractive power, the object side S7 of the fourth lens is convex, and the image side S8 of the fourth lens is concave. The fifth lens E5 has positive refractive power, the object side S9 of the fifth lens is convex, and the image side S10 of the fifth lens is convex. The sixth lens E6 has positive refractive power, the object side S11 of the sixth lens is convex, and the image side S12 of the sixth lens is concave. The protective glass E7 has the object side S13 of the protective glass and the image side S14 of the protective glass. Light from an object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0123] In the embodiment, the total effective focal length f of the optical camera lens is 16.94 mm, the total track length TTL of the optical camera lens is 25.44 mm, the image height ImgH of the optical camera lens is 3.93 mm, the maximum half field of view HFOV of the optical camera lens is 12.69°, and the F number fno of the optical camera lens is 3.00.

[0124] Table 3 shows the basic structure parameter table of the optical camera lens of Embodiment Two, wherein the units of the radius of curvature, thickness / distance are millimeters (mm).

[0125]

[0126] Table 3

[0127] Table 4 shows the high-order term coefficients of the aspherical surface that can be used in each aspherical surface of Embodiment Two, wherein each aspherical surface type can be defined by the formula (1) given in Embodiment One.

[0128]

[0129]

[0130] Table 4

[0131] Figure 7 The axial chromatic aberration curve of the optical camera lens of Embodiment Two is shown, which represents the convergence focus deviation of light of different wavelengths after passing through the optical camera lens. Figure 8 The astigmatism curve of the optical camera lens of Embodiment Two is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 9 The distortion curve of the optical camera lens of Embodiment Two is shown, which represents the distortion size value corresponding to different field angles. Figure 10The focal chromatic aberration curve of the optical camera lens of Embodiment Two is shown, which represents the deviation of light rays at different image heights on the imaging surface after passing through the optical camera lens.

[0132] According to Figures 7 to 10 It can be seen that the optical camera lens of Embodiment Two can achieve good imaging quality.

[0133] Embodiment Three

[0134] As Figures 11 to 15 shown, the optical camera lens of Embodiment Three of the present application is described. Figure 11 A schematic diagram of the structure of the optical camera lens of Embodiment Three is shown.

[0135] As Figure 11 shown, the optical camera lens sequentially includes a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protective glass E7, and an imaging surface S15 from the object side to the image side.

[0136] The first lens E1 has positive focal power, the object side surface S1 of the first lens is convex, and the image side surface S2 of the first lens is concave. The second lens E2 has positive focal power, the object side surface S3 of the second lens is convex, and the image side surface S4 of the second lens is convex. The third lens E3 has negative focal power, the object side surface S5 of the third lens is concave, and the image side surface S6 of the third lens is concave. The fourth lens E4 has positive focal power, the object side surface S7 of the fourth lens is convex, and the image side surface S8 of the fourth lens is concave. The fifth lens E5 has negative focal power, the object side surface S9 of the fifth lens is concave, and the image side surface S10 of the fifth lens is convex. The sixth lens E6 has positive focal power, the object side surface S11 of the sixth lens is convex, and the image side surface S12 of the sixth lens is concave. The protective glass E7 has an object side surface S13 and an image side surface S14 of the protective glass. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0137] In this embodiment, the total effective focal length f of the optical camera lens is 18.65 mm, the total length TTL of the optical camera lens is 25.49 mm, the image height ImgH of the optical camera lens is 3.53 mm, the maximum half field angle HFOV of the optical camera lens is 10.84°, and the aperture number fno of the optical camera lens is 2.63.

[0138] Table 5 shows the basic structure parameter table of the optical camera lens of Embodiment Three, wherein the units of the curvature radius, thickness / distance are all millimeters (mm).

[0139]

[0140] Table 5

[0141] Table 6 shows the high order term coefficients of each aspherical surface in the optical camera lens of Example Three, wherein each aspherical surface can be defined by the formula (1) given in Example One above.

[0142]

[0143]

[0144] Table 6

[0145] Figure 12 The axial chromatic aberration curve of the optical camera lens of Example Three is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical camera lens. Figure 13 The astigmatism curve of the optical camera lens of Example Three is shown, which represents the meridional image curvature and sagittal image curvature. Figure 14 The distortion curve of the optical camera lens of Example Three is shown, which represents the distortion size values corresponding to different field angles. Figure 15 The lateral chromatic aberration curve of the optical camera lens of Example Three is shown, which represents the deviation of light rays on the imaging plane after passing through the optical camera lens at different image heights.

[0146] According to Figures 12 to 15 It can be known that the optical camera lens of Example Three can achieve good imaging quality.

[0147] Example Four

[0148] As Figures 16 to 20 shown, the optical camera lens of Example Four is described. Figure 16 The schematic diagram of the optical camera lens structure of Example Four is shown.

[0149] As Figure 16 shown, the optical camera lens sequentially comprises, from the object side to the image side, a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protective glass E7 and an imaging plane S15.

[0150] The first lens E1 has positive refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave. The second lens E2 has positive refractive power, the object side S3 of the second lens is convex, and the image side S4 of the second lens is concave. The third lens E3 has negative refractive power, the object side S5 of the third lens is concave, and the image side S6 of the third lens is concave. The fourth lens E4 has positive refractive power, the object side S7 of the fourth lens is convex, and the image side S8 of the fourth lens is concave. The fifth lens E5 has positive refractive power, the object side S9 of the fifth lens is concave, and the image side S10 of the fifth lens is convex. The sixth lens E6 has positive refractive power, the object side S11 of the sixth lens is convex, and the image side S12 of the sixth lens is concave. The protective glass E7 has the object side S13 of the protective glass and the image side S14 of the protective glass. Light from an object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0151] In the embodiment, the total effective focal length f of the optical camera lens is 18.60 mm, the total track length TTL of the optical camera lens is 26.00 mm, the image height ImgH of the optical camera lens is 3.93 mm, the maximum half field of view HFOV of the optical camera lens is 11.98°, and the F number fno of the optical camera lens is 2.72.

[0152] Table 7 shows the basic structure parameter table of the optical camera lens of embodiment four, wherein the units of the radius of curvature, thickness / distance are millimeters (mm).

[0153]

[0154] Table 7

[0155] Table 8 shows the high-order term coefficients of the aspherical surfaces in embodiment four, wherein each aspherical surface can be defined by the formula (1) given in the above embodiment one.

[0156]

[0157]

[0158] Table 8

[0159] Figure 17 The axial chromatic aberration curve of the optical camera lens of embodiment four is shown, which represents the convergence point deviation of light of different wavelengths after passing through the optical camera lens. Figure 18 The astigmatism curve of the optical camera lens of embodiment four is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 19 The distortion curve of the optical camera lens of embodiment four is shown, which represents the distortion size value corresponding to different field angles. Figure 20The focal chromatic aberration curve of the optical camera lens of embodiment four is shown, which represents the deviation of light rays at different image heights on the imaging surface after passing through the optical camera lens.

[0160] According to Figures 17 to 20 It can be known that the optical camera lens given in embodiment four can achieve good imaging quality.

[0161] Embodiment five

[0162] As Figures 21 to 25 shown, the optical camera lens of embodiment five of the present application is described. Figure 21 A schematic diagram of the structure of the optical camera lens of embodiment five is shown.

[0163] As Figure 21 shown, the optical camera lens sequentially includes a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protective glass E7, and an imaging surface S15 from the object side to the image side.

[0164] The first lens E1 has positive focal power, the object side surface S1 of the first lens is convex, and the image side surface S2 of the first lens is concave. The second lens E2 has positive focal power, the object side surface S3 of the second lens is convex, and the image side surface S4 of the second lens is convex. The third lens E3 has negative focal power, the object side surface S5 of the third lens is concave, and the image side surface S6 of the third lens is concave. The fourth lens E4 has positive focal power, the object side surface S7 of the fourth lens is convex, and the image side surface S8 of the fourth lens is concave. The fifth lens E5 has positive focal power, the object side surface S9 of the fifth lens is convex, and the image side surface S10 of the fifth lens is convex. The sixth lens E6 has positive focal power, the object side surface S11 of the sixth lens is convex, and the image side surface S12 of the sixth lens is concave. The protective glass E7 has an object side surface S13 and an image side surface S14 of the protective glass. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0165] In the present embodiment, the total effective focal length f of the optical camera lens is 17.00 mm, the total length TTL of the optical camera lens is 24.00 mm, the image height ImgH of the optical camera lens is 3.93 mm, the maximum half field angle HFOV of the optical camera lens is 12.72°, and the aperture number fno of the optical camera lens is 3.33.

[0166] Table 9 shows the basic structure parameter table of the optical camera lens of embodiment five, wherein the units of the curvature radius, thickness / distance are all millimeters (mm).

[0167]

[0168] Table 9

[0169] Table 10 shows the high order term coefficients of each aspherical surface in embodiment five, wherein each aspherical surface type can be defined by formula (1) given in embodiment one.

[0170]

[0171]

[0172] Table 10

[0173] Figure 22 The axial chromatic aberration curve of the optical camera lens of embodiment five is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical camera lens. Figure 23 The astigmatism curve of the optical camera lens of embodiment five is shown, which represents the meridional image curvature and sagittal image curvature. Figure 24 The distortion curve of the optical camera lens of embodiment five is shown, which represents the distortion size values corresponding to different field angles. Figure 25 The lateral chromatic aberration curve of the optical camera lens of embodiment five is shown, which represents the deviation of light rays on the imaging plane after passing through the optical camera lens.

[0174] According to Figures 22 to 25 It can be known that the optical camera lens of embodiment five can achieve good imaging quality.

[0175] Embodiment six

[0176] As Figures 26 to 30 shown, the optical camera lens of embodiment six of the present application is described. Figure 26 The schematic diagram of the optical camera lens structure of embodiment six is shown.

[0177] As Figure 26 shown, the optical camera lens sequentially comprises, from the object side to the image side, a first lens E1, a prism, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a protective glass E7 and an imaging plane S15.

[0178] The first lens E1 has positive refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave. The second lens E2 has positive refractive power, the object side S3 of the second lens is convex, and the image side S4 of the second lens is convex. The third lens E3 has negative refractive power, the object side S5 of the third lens is concave, and the image side S6 of the third lens is concave. The fourth lens E4 has positive refractive power, the object side S7 of the fourth lens is convex, and the image side S8 of the fourth lens is concave. The fifth lens E5 has negative refractive power, the object side S9 of the fifth lens is concave, and the image side S10 of the fifth lens is concave. The sixth lens E6 has positive refractive power, the object side S11 of the sixth lens is convex, and the image side S12 of the sixth lens is concave. The protective glass E7 has the object side S13 of the protective glass and the image side S14 of the protective glass. Light from an object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0179] In the embodiment, the total effective focal length f of the optical camera lens is 21.01 mm, the total track length TTL of the optical camera lens is 27.63 mm, the image height ImgH of the optical camera lens is 3.93 mm, the maximum half field of view HFOV of the optical camera lens is 10.63°, and the F number fno of the optical camera lens is 3.35.

[0180] Table 11 shows the basic structure parameter table of the optical camera lens of embodiment six, wherein the units of the radius of curvature, thickness / distance are millimeters (mm).

[0181]

[0182] Table 11

[0183] Table 12 shows the high-order term coefficients of the aspherical surfaces in embodiment six, wherein each aspherical surface can be defined by the formula (1) given in the above embodiment one.

[0184]

[0185]

[0186] Table 12

[0187] Figure 27 The axial chromatic aberration curve of the optical camera lens of embodiment six is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical camera lens. Figure 28 The astigmatism curve of the optical camera lens of embodiment six is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 29 The distortion curve of the optical camera lens of embodiment six is shown, which represents the distortion size values corresponding to different field angles. Figure 30The relative illumination curves of the optical image capturing lens according to Embodiment Six are shown in FIG. 12, which represent the deviation of light rays at different image heights after passing through the optical image capturing lens.

[0188] According to Figures 27 to 30 It can be known that the optical image capturing lens according to Embodiment Six can achieve good imaging quality.

[0189] In summary, Embodiments One to Six respectively satisfy the relationships shown in Table 13.

[0190] Conditional / Example 1 2 3 4 5 6 f1 / f2 5.02 3.10 4.54 4.21 4.88 4.65 T34 / T23 1.34 0.75 1.30 1.28 1.42 2.14 f1 / f23 1.68 1.11 2.20 2.19 1.96 2.37 (R2-R1) / CT1 4.20 4.34 2.95 3.30 3.84 3.69 TTL / f*fno 4.23 4.51 3.59 3.80 4.70 4.40 BFL / ImgH 2.13 1.99 2.71 2.43 2.10 2.85 (CT4+CT5) / T45 8.84 1.96 5.07 8.98 9.14 17.31 (f1*f2) / (R2*R3) 3.51 6.55 5.20 5.33 3.61 4.22 V6 / |V5-V3| 5.95 1.43 2.95 3.43 3.12 2.80 f45 / f6 2.75 -0.74 1.50 1.20 2.02 2.33 (R11+R12) / CT6 6.97 5.94 9.46 7.05 7.01 9.32 SL / ATm 38.75 17.12 37.87 36.86 35.11 29.68 SD / (T45+CT5) 6.68 4.22 6.05 6.02 6.59 5.52 TTL / EPD 4.23 4.51 3.59 3.80 4.70 4.40 (f1+f2) / f 2.28 2.84 2.15 2.29 2.29 2.00 f1 / f6 3.76 3.76 3.29 3.14 3.85 3.88 (R1+R2) / (R1-R2) -3.69 -3.77 -4.93 -4.48 -3.79 -4.04

[0191] Table 13

[0192] Table 14 gives the effective focal length f of the optical image capturing lens according to Embodiments One to Six, and the effective focal length f1 to f6 of each lens (unit: mm).

[0193] Data / Example 1 2 3 4 5 6 f 17.19 16.94 18.65 18.60 17.00 21.01 f1 32.74 36.39 32.85 34.37 32.26 34.67 f2 6.52 11.74 7.23 8.17 6.61 7.45 f3 -3.26 -49.93 -3.19 -3.45 -3.08 -3.37 f4 499.90 -5.54 14.11 14.28 21.90 15.23 f5 23.67 28.99 -498.90 107.38 67.70 -50.80 f6 8.70 9.67 9.98 10.94 8.38 8.95 TTL 24.08 25.44 25.49 26.00 24.00 27.63 ImgH 3.93 3.93 3.53 3.93 3.93 3.93 HFOV 12.56 12.69 10.84 11.98 12.72 10.63 fno 3.02 3.00 2.63 2.72 3.33 3.35

[0194] Table 14

[0195] The present application also provides an imaging device, the electronic photosensitive element of which can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be a stand-alone imaging equipment such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical image capturing lens described above.

[0196] Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work should fall within the protection scope of the present application.

[0197] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be further understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0198] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0199] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical camera lens characterized in that, In order from the object side to the image side, sequentially comprising: a first lens with positive refractive power, the object side surface of which is convex, and the image side surface of which is concave; a prism; a second lens with positive refractive power, the object side surface of which is convex; a third lens with negative refractive power, the object side surface of which is concave; a fourth lens with refractive power, the object side surface of which is convex, and the image side surface of which is concave; a fifth lens with refractive power; a sixth lens with positive refractive power, the object side surface of which is convex, and the image side surface of which is concave; the total number of lenses with refractive power in the optical camera lens is 6; the fourth lens has positive refractive power and the fifth lens has positive refractive power, or the fourth lens has negative refractive power and the fifth lens has positive refractive power, or the fourth lens has positive refractive power and the fifth lens has negative refractive power; adjacent two lenses among the first lens to the sixth lens have an air gap therebetween, and the object side surface and the image side surface of the first lens to the sixth lens are aspheric surfaces; the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 3.10≤f1 / f2≤5.02; the air gap T34 on the optical axis of the third lens and the fourth lens and the air gap T23 on the optical axis of the second lens and the third lens satisfy: 0.75≤T34 / T23≤2.14; the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f of the optical camera lens satisfy: 2.00≤(f1+f2) / f≤2.

84.

2. The optical camera lens according to claim 1, characterized in that, the effective focal length f of the optical camera lens and the combined focal length f23 of the second lens and the third lens satisfy: 1.11≤f / |f23|≤2.

37.

3. The optical camera lens according to claim 1, characterized in that, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the central thickness CT1 of the first lens on the optical axis satisfy: 2.95≤(R2-R1) / CT1≤4.

34.

4. The optical camera lens according to claim 1, characterized in that, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the effective focal length f of the optical camera lens, and the relative F number fno of the optical camera lens satisfy: 3.59≤TTL / f*fno≤4.

70.

5. The optical camera lens according to claim 1, characterized in that, the distance BFL on the optical axis from the image side surface of the last lens of the optical camera lens to the imaging surface and the half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: 1.99≤BFL / ImgH≤2.

85.

6. The optical camera lens according to claim 1, characterized in that, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the air gap T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.96≤(CT4+CT5) / T45≤17.

31.

7. The optical camera lens according to claim 1, characterized in that, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the radius of curvature R2 of the image side surface of the first lens, and the radius of curvature R3 of the object side surface of the second lens satisfy: 3.51≤(f1*f2) / (R2*R3)≤6.

55.

8. The optical camera lens according to any one of claims 1 to 7, characterized in that, An Abbe number V3 of the third lens, an Abbe number V5 of the fifth lens and an Abbe number V6 of the sixth lens satisfy: 1.43≤V6 / |V5-V3|≤5.

95.

9. The optical camera lens according to any one of claims 1 to 7, characterized in that, A combined focal length f45 of the fourth lens and the fifth lens and an effective focal length f6 of the sixth lens satisfy: -0.74≤f45 / f6≤2.

75.

10. The optical camera lens according to any one of claims 1 to 7, characterized in that, A radius of curvature R11 of an object side surface of the sixth lens, a radius of curvature R12 of an image side surface of the sixth lens and a central thickness CT6 of the sixth lens on the optical axis satisfy: 5.94≤(R11+R12) / CT6≤9.

46.

11. The optical camera lens according to any one of claims 1 to 7, characterized in that, An on-axis distance SL from the stop to the imaging surface and a maximum value ATm of air spacings between adjacent two lenses with refractive power from the second lens to the sixth lens on the optical axis satisfy: 17.12≤SL / ATm≤38.

75.

12. The optical camera lens according to claim 11, characterized in that, A distance SD from the stop to an image side surface of the last lens of the optical camera lens, an air spacing T45 of the fourth lens and the fifth lens on the optical axis and a central thickness CT5 of the fifth lens on the optical axis satisfy: 4.22≤SD / (T45+CT5)≤6.

68.

13. The optical camera lens according to claim 11, characterized in that, An on-axis distance TTL from an object side surface of the first lens to the imaging surface and an entrance pupil diameter EPD of the optical camera lens satisfy: 3.59≤TTL / EPD≤4.

70.

14. The optical camera lens according to claim 13, characterized in that, An effective focal length f1 of the first lens and an effective focal length f6 of the sixth lens satisfy: 3.14≤f1 / f6≤3.

88.

15. The optical camera lens according to claim 14, characterized in that, A radius of curvature R1 of an object side surface of the first lens and a radius of curvature R2 of an image side surface of the first lens satisfy: -4.93≤(R1+R2) / (R1-R2)≤-3.69.

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