CN111258036B

CN111258036B - Optical imaging lens

Info

Publication number: CN111258036B
Application number: CN202010254455.1A
Authority: CN
Inventors: 巫祥曦; 徐武超; 张凯元; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2025-07-22
Anticipated expiration: 2040-04-02
Also published as: CN111258036A

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens; a second lens with positive optical power; a third lens, whose image side surface is a concave surface; a fourth lens; a fifth lens, whose object side surface is a concave surface; and a sixth lens, whose object side surface is a concave surface; wherein, half of the maximum field of view angle Semi‑FOV of the optical imaging lens satisfies Semi‑FOV＞50°; and the total effective focal length f of the optical imaging lens and the curvature radius R11 of the object side surface of the sixth lens satisfy ‑1.6＜f/R11＜‑0.5.

Description

Optical imaging lens

Technical Field

The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.

Background

In recent years, consumer electronic products such as smart phones, tablet devices, wearable devices and the like are updated more and more rapidly with the development of scientific technology. And image software functions and video software functions on consumer electronics are continually evolving. A camera module is generally arranged on a portable device such as a mobile phone, so that the mobile phone has a camera function. The market is increasingly demanding camera modules for portable electronic products, and the quality requirements for camera modules are increasing.

The number of optical imaging lenses in the camera module is also increasing, and the optical imaging lenses generally comprise ultra-large wide angle, ultra-clear main shooting and long focal length lenses. The camera module switches the lens under different modes to realize the ultra-clear shooting function, and combines the algorithm to realize the continuous zooming of non-real optics.

The rapid development of mobile phone camera modules, especially the popularization of large-size and high-pixel CMOS chips, makes mobile phone manufacturers put forward more stringent requirements on the imaging quality of optical imaging lenses. In addition, with the improvement of the performance and the reduction of the size of the CCD and CMOS devices, higher requirements are also put on the high imaging quality and miniaturization of the optical imaging lens which is matched.

In order to meet the miniaturization requirement and the imaging requirement, an optical imaging lens capable of achieving a large field angle and high imaging quality is required.

Disclosure of Invention

The present application provides an optical imaging lens applicable to portable electronic products, which at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.

The application provides an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis, wherein the second lens is provided with positive focal power, the third lens is provided with a concave image side surface, the fourth lens is provided with a concave object side surface, the sixth lens is provided with a concave object side surface, half of a maximum field angle of the optical imaging lens Semi-FOV satisfies Semi-FOV >50 degrees, and a total effective focal length f of the optical imaging lens and a curvature radius R11 of the object side surface of the sixth lens satisfy-1.6 < f/R11< -0.5.

In one embodiment, the object side surface of the first lens element to the image side surface of the sixth lens element has at least one aspherical mirror surface.

In one embodiment, the optical imaging lens further comprises a diaphragm, and the distance SD between the diaphragm and the image side surface of the sixth lens on the optical axis and the distance SL between the diaphragm and the imaging surface of the optical imaging lens on the optical axis satisfy 0.5< SD/SL <1.0.

In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f6 of the sixth lens satisfy-1.4 < f/f6-f/f1< -0.4.

In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f345 of the third, fourth and fifth lenses satisfy 0.5< f/f345<1.5.

In one embodiment, the edge thickness ET2 of the second lens and the center thickness CT2 of the second lens on the optical axis satisfy 0.3< ET2/CT2<0.8.

In one embodiment, the edge thickness ET4 of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis satisfy 0.2< ET4/CT4<0.7.

In one embodiment, an on-axis distance SAG51 between an intersection of the object side surface of the fifth lens and the optical axis and an effective radius vertex of the object side surface of the fifth lens and an on-axis distance SAG42 between an intersection of the image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens satisfy 0.8< SAG51/SAG42<1.3.

In one embodiment, an on-axis distance SAG11 between an intersection point of the object side surface of the first lens and the optical axis and an effective radius vertex of the object side surface of the first lens and an on-axis distance SAG12 between an intersection point of the image side surface of the first lens and the optical axis and an effective radius vertex of the image side surface of the first lens satisfy 0.4< SAG 12/(sag11+sag12) <1.5.

In one embodiment, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy 0.8< ct1/ET1<1.3.

In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R6 of the image-side surface of the third lens satisfy 0.2< R3/(r3+r6) <1.0.

In one embodiment, the radius of curvature R4 of the image side of the second lens and the radius of curvature R8 of the image side of the fourth lens satisfy 0.2< R4/(r4+r8) <1.0.

In one embodiment, the center thickness CT2 of the second lens on the optical axis is 0.7< CT2/T12<1.2 from the separation distance T12 of the first lens and the second lens on the optical axis.

In one embodiment, the sum Σat of the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the spacing distance between any adjacent two lenses of the first to sixth lenses on the optical axis satisfies 0.2< (ct5+ct6)/Σat <0.7.

In one embodiment, the center thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens satisfy 0.3< ct3/ET3<0.8.

In one embodiment, the first lens element has negative power, the second lens element has a convex object-side surface, the second lens element has a convex image-side surface, the fourth lens element has a convex image-side surface, the fifth lens element has a convex image-side surface, and the sixth lens element has negative power, and the image-side surface thereof has a concave surface.

The second aspect of the present application provides another optical imaging lens comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens having positive optical power, a third lens having a concave image side, a fourth lens, a fifth lens having a concave object side, and a sixth lens having a concave object side, wherein a half of a maximum field angle of the optical imaging lens Semi-FOV satisfies Semi-FOV >50 DEG, a center thickness CT2 of the second lens on the optical axis satisfies 0.7< CT2/T12<1.2 with a distance T12 between the first lens and the second lens on the optical axis

In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R11 of the object side of the sixth lens satisfy-1.6 < f/R11< -0.5.

The application adopts six lenses, and the optical imaging lens has at least one beneficial effects of miniaturization, large field angle, high imaging quality, easy processing and the like by reasonably distributing the focal power, the surface type, the center thickness of each lens, the axial spacing among the lenses and the like.

Drawings

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

fig. 1 shows a schematic configuration of an optical imaging lens according to embodiment 1 of the present application, and fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, respectively;

Fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application, and fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, respectively;

Fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application, and fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, respectively;

Fig. 7 shows a schematic structural view of an optical imaging lens according to embodiment 4 of the present application, and fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, respectively;

fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application, and fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, respectively;

Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application, and fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, respectively.

Detailed Description

For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

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 feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

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

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region, and if the lens surface is concave and the concave position 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 referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

The features, principles, and other aspects of the present application are described in detail below.

The optical imaging lens according to the exemplary embodiment of the present application may include, for example, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are sequentially arranged from the object side to the image side along the optical axis. In the first lens to the sixth lens, any adjacent two lenses may have an air space therebetween.

In an exemplary embodiment, the first lens has positive or negative power, the second lens has positive or negative power, the third lens has positive or negative power, the image side surface of which is concave, the fourth lens has positive or negative power, the fifth lens has positive or negative power, the object side surface of which is concave, and the sixth lens has positive or negative power, the object side surface of which is concave. The low-order aberration of the lens is effectively balanced and controlled by reasonably controlling the positive and negative distribution of the focal power of each component of the lens and the surface curvature of the lens, and the optical imaging lens obtains good imaging capability.

In an exemplary embodiment, the first lens has a negative optical power.

In an exemplary embodiment, the object-side surface of the second lens is convex, and the image-side surface of the second lens is convex.

In an exemplary embodiment, the image side of the fourth lens is convex.

In an exemplary embodiment, the image side of the fifth lens is convex.

In an exemplary embodiment, the sixth lens has negative optical power, and its image-side surface is concave. The optical power of each lens is reasonably distributed, so that the optical imaging lens is favorable for ensuring higher imaging quality, and the processing feasibility and stability are realized.

In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be provided at an appropriate position as required, for example, between the first lens and the second lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression Semi-FOV >50 °, wherein Semi-FOV is half of a maximum field angle of the optical imaging lens. The range of the maximum half field angle is controlled, so that the optical imaging lens can obtain a larger range of object space angles. More specifically, the Semi-FOV satisfies 53 ° < Semi-FOV <60 °.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-1.6 < f/R11< -0.5, where f is the total effective focal length of the optical imaging lens and R11 is the radius of curvature of the object side surface of the sixth lens. And the ratio of the total effective focal length to the curvature radius of the object side surface of the sixth lens is controlled, so that the processing and forming of the sixth lens are facilitated. More specifically, f and R11 may satisfy-1.40 < f/R11< -0.52.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5< SD/SL <1.0, where SD is the distance on the optical axis of the stop to the image side surface of the sixth lens, and SL is the distance on the optical axis of the stop to the imaging surface of the optical imaging lens. The ratio of the distance from the constraint diaphragm to the image side surface of the last lens to the distance from the constraint diaphragm to the imaging surface is favorable for ensuring the rationality of the shape of the optical imaging lens and for ensuring the processability of the optical imaging lens. More specifically, SD and SL may satisfy 0.75< SD/SL <0.90.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-1.4 < f/f6-f/f1< -0.4, where f is the total effective focal length of the optical imaging lens, f1 is the effective focal length of the first lens, and f6 is the effective focal length of the sixth lens. By controlling the conditional expression, the spherical aberration contribution quantity of the first lens and the sixth lens is guaranteed to be in a reasonable range, and high-quality imaging is facilitated to be obtained in the on-axis view field of the optical imaging lens. More specifically, f1 and f6 may satisfy-1.30 < f/f6-f/f1< -0.41.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5< f/f345<1.5, where f is the total effective focal length of the optical imaging lens and f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens. By controlling the conditional expression, effective focal lengths of the third lens, the fourth lens and the fifth lens are reasonably distributed, focal power of the whole optical imaging lens is distributed, and tolerance sensitivity of each lens is reduced. More specifically, f and f345 may satisfy 0.70< f/f345<1.25.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3< ET2/CT2<0.8, where ET2 is an edge thickness of the second lens and CT2 is a center thickness of the second lens on the optical axis. The accuracy and stability of the processing and forming of the second lens are facilitated by controlling the ratio of the edge thickness of the second lens to the center thickness thereof. More specifically, ET2 and CT2 may satisfy 0.40< ET2/CT2<0.55.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.2< ET4/CT4<0.7, where ET4 is an edge thickness of the fourth lens and CT4 is a center thickness of the fourth lens on the optical axis. The accuracy and stability of the processing and forming of the fourth lens are facilitated by controlling the ratio of the edge thickness of the fourth lens to the center thickness of the fourth lens. More specifically, ET4 and CT4 may satisfy 0.25< ET4/CT4<0.50.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8< SAG51/SAG42<1.3, wherein SAG51 is an on-axis distance between an intersection point of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens, and SAG42 is an on-axis distance between an intersection point of the image side surface of the fourth lens and the optical axis to an effective radius vertex of the image side surface of the fourth lens. The control of the ratio of the sagittal height of the object side surface of the fifth lens to the sagittal height of the image side surface of the fourth lens is beneficial to controlling the bending degree of the two lenses, further beneficial to lens processing and ensuring that the optical imaging lens has higher imaging quality. More specifically, SAG51 and SAG42 may satisfy 0.88< SAG51/SAG42<1.08.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4< SAG 12/(sag11+sag12) <1.5, wherein SAG11 is an on-axis distance between an intersection point of the object side surface of the first lens and the optical axis to an effective radius vertex of the object side surface of the first lens, and SAG12 is an on-axis distance between an intersection point of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens. By controlling the conditional expression, the sagittal height of the two mirror surfaces of the first lens is favorably controlled, and further, the processing and forming of the first lens are favorably realized. More specifically, SAG11 and SAG12 may satisfy 0.45< SAG 12/(sag11+sag12) <0.55.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8< ct1/ET1<1.3, where CT1 is a center thickness of the first lens on the optical axis and ET1 is an edge thickness of the first lens. The accuracy and stability of the processing and forming of the first lens are facilitated by controlling the ratio of the center thickness of the first lens to the edge thickness thereof. Specifically, CT1 and ET1 may satisfy 0.95< CT1/ET1<1.25.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.2< R3/(r3+r6) <1.0, where R3 is a radius of curvature of the object side surface of the second lens and R6 is a radius of curvature of the image side surface of the third lens. By controlling the radius of curvature of the object-side surface of the second lens element and the radius of curvature of the image-side surface of the third lens element to satisfy the above-described conditional expression, the shape of the lens element can be effectively restricted. Thereby improving aberration caused by the aperture and improving imaging quality of the optical imaging lens. More specifically, R3 and R6 may satisfy 0.50< R3/(r3+r6) <0.75.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.2< R4/(r4+r8) <1.0, where R4 is a radius of curvature of the image side of the second lens and R8 is a radius of curvature of the image side of the fourth lens. By controlling the radius of curvature of the image side surface of the second lens and the radius of curvature of the image side surface of the fourth lens to satisfy the condition, the shape of the lens can be effectively restrained. Thereby improving aberration caused by the aperture and improving imaging quality of the optical imaging lens. More specifically, R4 and R8 may satisfy 0.60< R4/(r4+r8) <0.80.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7< ct2/T12<1.2, where CT2 is the center thickness of the second lens on the optical axis, and T12 is the separation distance of the first lens and the second lens on the optical axis. The ratio of the center thickness of the second lens to the air interval between the first lens and the second lens is controlled, so that the axial chromatic aberration can be corrected, and the imaging quality of the optical imaging lens is improved. More specifically, CT2 and T12 may satisfy 0.72< CT2/T12<1.10.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.2< (ct5+ct6)/Σat <0.7, where CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, Σat is the sum of the interval distances on the optical axis between any adjacent two lenses of the first lens to the sixth lens. Exemplaryly, Σat=t 12+T23+ 12+T23 +. The control of the conditional expression is beneficial to shortening the total length of the optical imaging lens, and simultaneously beneficial to controlling the center thicknesses of the fifth lens and the sixth lens within a reasonable range, so that the stability of the lens structure is maintained. More specifically, CT5, CT6, and Σat may satisfy 0.38< (ct5+ct6)/Σat <0.62.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3< ct3/ET3<0.8, where CT3 is a center thickness of the third lens on the optical axis and ET3 is an edge thickness of the third lens. The processing and forming of the third lens are facilitated by controlling the ratio of the center thickness of the third lens to the edge thickness of the third lens. More specifically, CT3 and ET3 may satisfy 0.55< ct3/ET3<0.70.

The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products. Meanwhile, the optical imaging lens provided by the application has the excellent optical performances of miniaturization, large field angle, high imaging quality, easiness in processing and the like.

In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror. The aspherical lens is characterized in that the curvature is continuously changed 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 radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspherical mirror surfaces.

However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens sequentially comprises a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7 from an object side to an image side along an optical axis.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).

TABLE 1

In embodiment 1, the value of the total effective focal length f of the optical imaging lens is 2.18mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.10mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.23, and the value of half the maximum field angle Semi-FOV is 58.5 °.

In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

Where x is the distance vector height of the aspherical surface at a position h in the optical axis direction from the apex of the aspherical surface, c is the paraxial curvature of the aspherical surface, c=1/R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in table 1 above), k is a conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. The following tables 2-1 and 2-2 show the higher order coefficients A₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈、A₂₀、A₂₂ and A ₂₄ that can be used for each of the aspherical mirror faces S1 to S12 in example 1.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

4.4788E-01

-3.6620E-02

3.7508E-04

-3.9412E-03

-2.7716E-04

1.8442E-05

9.7531E-05

4.1211E-05

-9.8987E-06

S2

2.3120E-01

1.0305E-02

2.7892E-03

-3.2733E-04

-3.9373E-04

-1.4285E-04

-4.0084E-05

-1.8222E-06

6.9449E-06

S3

-1.3173E-02

-2.5287E-03

-3.9898E-04

-7.8813E-05

-2.6208E-05

-5.3134E-06

-2.8519E-06

1.2634E-06

-1.8292E-06

S4

-1.4519E-01

1.7830E-03

-8.3978E-03

7.4067E-04

-9.6437E-04

5.1740E-05

-1.2272E-04

8.0336E-07

-1.4695E-05

S5

-2.7476E-01

2.9804E-02

-6.7457E-03

3.4757E-03

-1.3701E-03

2.2024E-04

-2.2570E-04

3.4013E-05

-4.6108E-05

S6

-2.2311E-01

2.0375E-02

-3.0643E-03

1.2415E-03

-3.0513E-04

-5.0614E-05

-1.3451E-05

-4.9241E-06

-5.0411E-07

S7

2.3652E-01

-1.1226E-02

-3.2257E-04

-1.5378E-03

-1.7904E-04

-5.7286E-05

-3.7153E-05

7.5325E-05

1.1809E-05

S8

4.5474E-01

-1.7022E-02

3.1804E-02

-6.4114E-03

-3.3001E-03

-7.1464E-04

-1.0730E-04

9.5584E-05

1.5923E-04

S9

-3.8145E-01

-8.6184E-02

2.0432E-03

1.9679E-02

4.7325E-04

4.1575E-04

-1.3459E-03

-8.3960E-04

-1.4161E-04

S10

-4.6255E-03

-7.3944E-04

-4.5710E-02

4.3040E-02

-2.9372E-02

1.2636E-02

-2.6476E-03

3.8686E-04

1.4808E-04

S11

4.8718E-01

3.2535E-02

-5.9895E-02

4.8382E-02

-2.6001E-02

7.0868E-03

1.1468E-03

-1.7773E-03

6.2050E-04

S12

-2.8031E+00

5.0667E-01

-1.0098E-01

7.0816E-02

-3.0645E-02

7.6673E-03

-4.5640E-03

3.2566E-03

6.5205E-04

TABLE 2-1

Face number	A22	A24
			S1	0.0000E+00	0.0000E+00
S2	0.0000E+00	0.0000E+00
			S3	0.0000E+00	0.0000E+00
S4	0.0000E+00	0.0000E+00
			S5	0.0000E+00	0.0000E+00
S6	0.0000E+00	0.0000E+00
			S7	0.0000E+00	0.0000E+00
S8	0.0000E+00	0.0000E+00
			S9	0.0000E+00	0.0000E+00
S10	0.0000E+00	0.0000E+00
			S11	7.6159E-06	1.4143E-07
S12	0.0000E+00	0.0000E+00

TABLE 2-2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens sequentially comprises a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7 from an object side to an image side along an optical axis.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In embodiment 2, the value of the total effective focal length f of the optical imaging lens is 2.32mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.41mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.23, and the value of half the maximum field angle Semi-FOV is 55.6 °.

Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 3 Table 3

TABLE 4 Table 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an optical filter E7.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In embodiment 3, the value of the total effective focal length f of the optical imaging lens is 2.32mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.63mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.23, and the value of half the maximum field angle Semi-FOV is 53.7 °.

Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 5

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

4.6807E-01

-1.8132E-02

6.1708E-03

-1.7583E-03

-1.7722E-05

-1.6521E-04

-3.6423E-05

-1.7485E-05

-6.3078E-06

S2

2.8595E-01

2.0597E-02

8.9363E-03

2.3378E-03

8.9990E-04

3.3575E-04

1.3895E-04

4.7809E-05

1.9833E-05

S3

-1.2559E-02

-1.7280E-03

-1.8547E-04

-3.0726E-05

-4.8047E-06

-2.5805E-06

-1.0024E-07

3.3712E-07

-1.9036E-07

S4

-1.2022E-01

5.5535E-03

-5.2836E-03

8.9209E-04

-5.7393E-04

1.1779E-04

-5.9905E-05

1.4874E-05

-4.9944E-06

S5

-2.2564E-01

2.2178E-02

-4.8949E-03

2.1840E-03

-7.3078E-04

2.3317E-04

-7.9835E-05

3.1341E-05

-7.1672E-06

S6

-2.0209E-01

1.6881E-02

-3.1714E-03

1.2411E-03

-3.0494E-04

8.8312E-05

-1.3305E-05

-3.9677E-07

4.2901E-06

S7

9.8145E-02

-7.2033E-03

-2.9885E-03

2.5447E-04

-3.7149E-05

8.2366E-05

5.7996E-05

2.2499E-05

1.1897E-05

S8

4.3354E-01

-2.3355E-02

2.0518E-02

-5.8991E-03

-8.4236E-04

-4.9619E-05

-1.3253E-04

1.6584E-04

-4.3044E-05

S9

-3.9993E-01

-3.0372E-02

2.0845E-02

8.8569E-03

-3.6452E-03

1.9525E-03

-7.1008E-04

-4.7783E-05

-2.1982E-04

S10

-1.1451E-01

6.6922E-02

-4.2290E-02

2.9149E-02

-1.1830E-02

6.6646E-03

-5.5913E-03

1.9849E-03

-2.1017E-03

S11

5.1437E-01

4.7637E-02

-7.9378E-02

4.8260E-02

-2.2036E-02

6.7239E-03

-2.6145E-04

-1.1608E-03

3.3996E-04

S12

-2.6133E+00

4.8970E-01

-1.4884E-01

4.7665E-02

-2.3306E-02

7.7783E-03

-3.4357E-03

4.4430E-04

-1.6242E-04

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an optical filter E7.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In embodiment 4, the value of the total effective focal length f of the optical imaging lens is 2.14mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.53mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.23, and the value of half the maximum field angle Semi-FOV is 54.9 °.

Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 7

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

3.5056E-01

-1.9809E-02

4.6237E-03

-5.5178E-04

1.7049E-04

1.1280E-05

7.2594E-07

5.9577E-06

1.6285E-06

S2

2.1072E-01

9.1739E-03

3.0818E-03

2.8213E-04

3.7167E-05

2.3154E-06

3.8043E-06

8.7623E-06

9.7708E-06

S3

-1.1853E-02

-2.0913E-03

-3.2393E-04

-7.0051E-05

-1.5059E-05

-5.7417E-06

-1.5265E-06

-1.3895E-06

8.0081E-07

S4

-1.3408E-01

1.6092E-04

-6.0736E-03

4.5550E-04

-5.3117E-04

1.7395E-05

-5.6106E-05

3.5744E-07

-6.2921E-06

S5

-2.3688E-01

1.8947E-02

-4.9895E-03

1.9443E-03

-3.9536E-04

9.7073E-05

-5.1771E-05

1.7524E-05

5.2857E-06

S6

-2.0705E-01

1.8152E-02

-3.0268E-03

1.3871E-03

-1.0713E-04

-1.8292E-05

3.4224E-06

-2.0952E-05

1.4833E-05

S7

1.7838E-01

-1.6086E-02

1.1868E-03

1.1205E-03

1.0016E-03

9.4461E-04

7.1473E-04

2.6409E-04

1.5020E-04

S8

5.0476E-01

-3.0537E-02

2.2501E-02

-6.2975E-03

-1.9475E-04

-2.4673E-03

8.1637E-04

-8.7268E-05

1.1132E-04

S9

-2.9528E-01

-2.7519E-02

8.0099E-03

2.9509E-03

-7.6524E-03

-6.1953E-04

9.0189E-03

3.5430E-03

1.6769E-03

S10

-5.9383E-01

2.2507E-01

-2.4179E-02

4.3491E-02

-1.6986E-02

1.1523E-02

-8.2218E-03

-8.6287E-03

-3.6943E-04

S11

4.5915E-01

-3.4453E-01

-1.0866E-02

-1.5248E-02

7.7227E-02

1.3810E-02

-3.2798E-02

-4.3868E-02

-1.2985E-02

S12

-9.7090E-01

-8.0956E-01

-1.3452E-01

-1.9111E-01

5.2909E-02

2.7303E-02

7.7549E-02

3.0466E-02

1.9912E-02

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an optical filter E7.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In embodiment 5, the value of the total effective focal length f of the optical imaging lens is 2.15mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.11mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.23, and the value of half the maximum field angle Semi-FOV is 58.6 °.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 9

Table 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an optical filter E7.

The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is concave, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In embodiment 6, the value of the total effective focal length f of the optical imaging lens is 2.18mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.20mm, the value of half the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 2.88mm, the value of the ratio f/EPD of the total effective focal length f and the entrance pupil diameter EPD is 2.22, and the value of half the maximum field angle Semi-FOV is 57.9 °.

Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 11

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

4.5747E-01

-2.8689E-02

3.9460E-03

-2.7725E-03

-4.7642E-05

-1.2727E-04

1.0961E-05

1.2357E-06

1.6379E-05

S2

2.2456E-01

1.1417E-02

4.0995E-03

4.9355E-04

8.2424E-05

2.1651E-05

2.5441E-06

-1.0095E-05

2.7701E-06

S3

-1.2934E-02

-2.2417E-03

-3.1142E-04

-6.2458E-05

-1.5487E-05

-4.8376E-06

-2.0242E-06

-8.7804E-07

-3.2929E-08

S4

-1.4457E-01

1.8457E-03

-7.9356E-03

6.2328E-04

-9.3767E-04

5.2718E-05

-1.1135E-04

1.0386E-05

-1.0020E-05

S5

-2.7401E-01

3.1877E-02

-5.9875E-03

3.3095E-03

-1.1546E-03

3.8807E-04

-1.2549E-04

6.2721E-05

-3.0280E-05

S6

-2.3155E-01

1.9321E-02

-3.4420E-03

1.3991E-03

-1.7373E-04

1.3522E-04

6.0869E-05

2.6806E-05

2.1431E-05

S7

1.9401E-01

-1.1545E-02

-5.5726E-05

-8.7955E-04

-2.0852E-04

-2.3966E-04

-1.2982E-06

-3.2035E-05

6.1933E-06

S8

4.5647E-01

-1.4984E-02

3.0142E-02

-7.3035E-03

-9.0828E-04

-1.8163E-03

2.6634E-04

-2.7189E-05

1.8626E-04

S9

-4.1592E-01

-1.0165E-01

-2.7044E-03

1.7071E-02

4.7998E-03

-1.6384E-03

-1.0098E-03

-9.3135E-04

8.8242E-05

S10

2.1456E-02

2.1179E-02

-4.6276E-02

4.2791E-02

-2.5796E-02

1.3825E-02

-4.0048E-03

2.3144E-04

1.0045E-03

S11

5.0018E-01

3.7755E-02

-6.7817E-02

4.0911E-02

-1.6873E-02

6.6844E-03

-2.6359E-03

7.0955E-04

-1.2817E-04

S12

-2.8871E+00

4.5692E-01

-1.3974E-01

5.5487E-02

-1.2342E-02

1.1665E-02

-4.1960E-03

2.6730E-04

-1.4134E-04

Table 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.

In summary, examples 1 to 6 satisfy the relationships shown in table 13, respectively.

Conditional\embodiment	1	2	3	4	5	6
							f/R11	-0.68	-0.54	-0.55	-1.34	-0.63	-0.62
SD/SL	0.76	0.79	0.80	0.87	0.81	0.79
							f/f6-f/f1	-0.99	-1.07	-1.02	-0.42	-1.24	-0.96
f/f345	1.21	1.24	1.13	0.72	1.19	1.12
							ET2/CT2	0.47	0.44	0.50	0.50	0.50	0.49
ET4/CT4	0.34	0.40	0.49	0.48	0.26	0.42
							SAG51/SAG42	0.90	0.93	0.97	1.04	0.96	1.03
SAG12/(SAG11+SAG12)	0.51	0.49	0.49	0.53	0.46	0.50
							CT1/ET1	0.96	1.12	1.03	0.96	1.24	1.02
R3/(R3+R6)	0.71	0.65	0.69	0.63	0.51	0.71
							R4/(R4+R8)	0.67	0.79	0.68	0.71	0.64	0.67
CT2/T12	0.98	0.79	0.74	1.07	1.05	0.89
							(CT5+CT6)/ΣAT	0.48	0.60	0.42	0.40	0.50	0.49
CT3/ET3	0.58	0.61	0.58	0.58	0.66	0.60

TABLE 13

The application also provides an imaging device provided with an electron-sensitive element for imaging, which can be a photosensitive coupling element (Charge Coupled Device, CCD) or a complementary metal-oxide-semiconductor element (Complementary Metal Oxide Semiconductor, CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application is not limited to the specific combination of the above technical features, but also encompasses other technical features which may be combined with any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims

1. An optical imaging lens, characterized in that it comprises, in order from the object side to the image side along the optical axis:

A first lens having negative optical power, whose image side surface is concave;

The second lens has positive power, and its object-side surface is convex and its image-side surface is convex;

a third lens having optical power and having a concave image-side surface;

a fourth lens element having positive refractive power and a convex image-side surface;

a fifth lens element having optical power, the object side surface of which is concave; and

a sixth lens having negative optical power, whose object side surface is concave;

At least one of the third lens and the fifth lens has negative optical power;

The number of lenses having optical power in the optical imaging lens is six;

Wherein, half of the maximum field of view angle Semi-FOV of the optical imaging lens satisfies 53°＜Semi-FOV＜60°;

The total effective focal length f of the optical imaging lens and the curvature radius R11 of the object side surface of the sixth lens satisfy -1.34≤f/R11＜-0.52;

A center thickness CT2 of the second lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis satisfy 0.72＜CT2/T12＜1.10.

2. The optical imaging lens according to claim 1, characterized in that the optical imaging lens further comprises an aperture;

A distance SD from the aperture to the image side surface of the sixth lens on the optical axis and a distance SL from the aperture to the imaging surface of the optical imaging lens on the optical axis satisfy 0.75＜SD/SL＜0.90.

3. The optical imaging lens according to claim 1, characterized in that a total effective focal length f of the optical imaging lens, an effective focal length f1 of the first lens, and an effective focal length f6 of the sixth lens satisfy -1.24≤f/f6-f/f1＜-0.41.

4. The optical imaging lens according to claim 1, characterized in that a total effective focal length f of the optical imaging lens and a combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy 0.70＜f/f345＜1.25.

5 . The optical imaging lens according to claim 1 , wherein an edge thickness ET2 of the second lens and a center thickness CT2 of the second lens on the optical axis satisfy 0.40＜ET2/CT2≤0.50.

6 . The optical imaging lens according to claim 1 , wherein an edge thickness ET4 of the fourth lens and a center thickness CT4 of the fourth lens on the optical axis satisfy 0.25＜ET4/CT4＜0.50.

7. The optical imaging lens according to claim 1, characterized in that an on-axis distance SAG51 between an intersection of the object-side surface of the fifth lens and the optical axis to an effective radius vertex of the object-side surface of the fifth lens and an on-axis distance SAG42 between an intersection of the image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens satisfy 0.88＜SAG51/SAG42＜1.08.

8. The optical imaging lens according to claim 1, characterized in that an on-axis distance SAG11 from an intersection of the object-side surface of the first lens and the optical axis to an effective radius vertex of the object-side surface of the first lens and an on-axis distance SAG12 from an intersection of the image-side surface of the first lens and the optical axis to an effective radius vertex of the image-side surface of the first lens satisfy 0.45＜SAG12/(SAG11+SAG12)＜0.55.

9 . The optical imaging lens according to claim 1 , wherein a center thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy 0.95＜CT1/ET1＜1.25.

10 . The optical imaging lens according to claim 1 , wherein a curvature radius R3 of the object-side surface of the second lens and a curvature radius R6 of the image-side surface of the third lens satisfy 0.50＜R3/(R3+R6)＜0.75.

11. The optical imaging lens according to claim 1, wherein a curvature radius R4 of the image side surface of the second lens and a curvature radius R8 of the image side surface of the fourth lens satisfy 0.60＜R4/(R4+R8)＜0.80.

12. The optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a sum ΣAT of intervals between any two adjacent lenses from the first lens to the sixth lens on the optical axis satisfy 0.38＜(CT5+CT6)/ΣAT＜0.62.

13 . The optical imaging lens according to claim 1 , wherein a center thickness CT3 of the third lens on the optical axis and an edge thickness ET3 of the third lens satisfy 0.55＜CT3/ET3＜0.70.