CN111258036A

CN111258036A - Optical imaging lens

Info

Publication number: CN111258036A
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: 2020-06-09

Abstract

The application discloses an optical imaging lens, it includes from the object side to the image side along the optical axis in proper order: a first lens; a second lens having a positive optical power; a third lens element having a concave image-side surface; a fourth lens; a fifth lens element having a concave object-side surface; and a sixth lens element having a concave object-side surface; wherein, half of the Semi-FOV of the maximum field angle of the optical imaging lens meets the condition that the Semi-FOV is more than 50 degrees; 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 meet the condition that f/R11 is less than-0.5 and is more than-1.6.

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, with the development of scientific technology, consumer electronics such as smart phones, tablet devices, wearable devices and the like are upgraded and updated faster and faster. And image software functions and video software functions on consumer electronics are continuously developed. A camera module is generally installed in a portable device such as a mobile phone, so that the mobile phone has a camera function. The market is increasing gradually the demand of the module of making a video recording that is applicable to portable electronic product, and is more and more high to the quality requirement of the module of making a video recording.

The number of optical imaging lenses in a camera module is increasing, and the camera module generally comprises an ultra-large wide-angle, ultra-clear main camera and a telephoto lens. The camera module switches the lens under different modes to realize an ultra-clear shooting function, and realizes non-real optical 'continuous' zooming by combining an algorithm.

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

In order to meet the miniaturization requirement and the imaging requirement, an optical imaging lens with 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 that may solve, at least, or in part, at least one of the above-mentioned disadvantages of the related art.

An aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens; a second lens having a positive optical power; a third lens element having a concave image-side surface; a fourth lens; a fifth lens element having a concave object-side surface; and a sixth lens element having a concave object-side surface; wherein, half of the Semi-FOV of the maximum field angle of the optical imaging lens meets the condition that the Semi-FOV is more than 50 degrees; 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 meet the condition that f/R11 is less than-0.5 and is more than-1.6.

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

In one embodiment, the optical imaging lens further comprises a diaphragm; 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 lens, the fourth lens and the fifth lens satisfy 0.5 < f/f345 < 1.5.

In one embodiment, the edge thickness ET2 of the second lens and the central 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 central 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 an object-side surface of the fifth lens and the optical axis to a vertex of an effective radius of the object-side surface of the fifth lens and an on-axis distance SAG42 between an intersection of an image-side surface of the fourth lens and the optical axis to a vertex of an effective radius 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 an 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 between an intersection point of an 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 0.4 < SAG12/(SAG11+ SAG12) < 1.5.

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

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

In one embodiment, a central thickness CT2 of the second lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 0.7 < CT2/T12 < 1.2.

In one embodiment, a sum Σ AT of a center thickness CT5 of the fifth lens in the optical axis, a center thickness CT6 of the sixth lens in the optical axis, and a separation distance between any adjacent two of the first to sixth lenses in the optical axis satisfies 0.2 < (CT5+ CT6)/Σ AT < 0.7.

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

In one embodiment, the first lens has a negative optical power; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the image side surface of the fourth lens is a convex surface; the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the image side surface of the sixth lens is concave.

A second aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens; a second lens having a positive optical power; a third lens element having a concave image-side surface; a fourth lens; a fifth lens element having a concave object-side surface; and a sixth lens element having a concave object-side surface; wherein, half of the Semi-FOV of the maximum field angle of the optical imaging lens meets the condition that the Semi-FOV is more than 50 degrees; the central thickness CT2 of the second lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis satisfy 0.7 < CT2/T12 < 1.2

In one embodiment, 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.

The optical imaging lens adopts six lenses, and has at least one beneficial effect of miniaturization, large field angle, high imaging quality, easiness in processing and the like by reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens 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 when taken in conjunction with the accompanying drawings. In the drawings:

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

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

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

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

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

fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application; fig. 12A to 12D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6.

Detailed Description

For a better understanding of the present application, various aspects of the present 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 present application and does not limit the scope of the present 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 this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and 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; 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 called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" 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. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present 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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

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

The optical imaging lens according to an exemplary embodiment of the present application may include, for example, six lenses having optical powers, 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 arranged in order from the object side to the image side along the optical axis. Any adjacent two lenses among the first to sixth lenses may have an air space therebetween.

In an exemplary embodiment, the first lens has a positive or negative power; the second lens has positive focal power; the third lens has positive focal power or negative focal power, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power, and the object side surface of the fifth lens is a concave surface; the sixth lens has positive focal power or negative focal power, and the object side surface of the sixth lens is a concave surface. 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 lens surface curvature, 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 surface of the fourth lens is convex.

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

In an exemplary embodiment, the sixth lens has a negative power, and the image-side surface thereof is concave. The optical focal power of each lens is reasonably distributed, so that the optical imaging lens is favorably ensured to have higher imaging quality and has processing feasibility and stability.

In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be disposed at an appropriate position as needed, 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 on the imaging surface.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression Semi-FOV > 50 °, where Semi-FOV is half of the maximum field angle of the optical imaging lens. By controlling the range of the maximum half field angle, the optical imaging lens is favorable for ensuring that an object side angle in a larger range can be obtained. 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. 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 sixth lens is favorably processed and molded. More specifically, f and R11 can 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 a distance on an optical axis from the stop to the image side surface of the sixth lens, and SL is a distance on the optical axis from the stop to the image plane of the optical imaging lens. The ratio of the distance from the stop to the image side surface of the last lens to the distance from the stop to the image plane is constrained, which is beneficial to ensuring the reasonability of the shape of the optical imaging lens and the machinability 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 contribution of spherical aberration of the first lens and the sixth lens is favorably ensured to be in a reasonable range, and high-quality imaging of the on-axis view field of the optical imaging lens is favorably achieved. 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 a total effective focal length of the optical imaging lens, and f345 is a combined focal length of the third, fourth, and fifth lenses. By controlling the conditional expression, the effective focal lengths of the third lens, the fourth lens and the fifth lens are favorably and reasonably distributed, so that the focal power of the whole optical imaging lens is favorably distributed, and the 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 an optical axis. By controlling the ratio of the edge thickness of the second lens to the center thickness of the second lens, the accuracy and stability of the machine shaping of the second lens are facilitated. More specifically, ET2 and CT2 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 an optical axis. By controlling the ratio of the edge thickness of the fourth lens to the center thickness of the fourth lens, the accuracy and stability of the processing and forming of the fourth lens are facilitated. More specifically, ET4 and CT4 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, where SAG51 is an on-axis distance between an intersection of an 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 of an 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 ratio of the rise of the object side surface of the fifth lens to the rise of the image side surface of the fourth lens is controlled, so that the bending degree of the two lenses is controlled, the processing of the lenses is facilitated, and the optical imaging lens is guaranteed to have high 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 < SAG12/(SAG11+ SAG12) < 1.5, where SAG11 is an on-axis distance between an intersection of an 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 of an 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 rise of the two mirror surfaces of the first lens can be controlled, and the processing and forming of the first lens can be further facilitated. More specifically, SAG11 and SAG12 may satisfy 0.45 < SAG12/(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 central thickness of the first lens on an optical axis and ET1 is an edge thickness of the first lens. By controlling the ratio of the center thickness and the edge thickness of the first lens, the processing and forming accuracy and stability of the first lens are facilitated. Specifically, CT1 and ET1 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 an object-side surface of the second lens and R6 is a radius of curvature of an image-side surface of the third lens. By controlling the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the third lens to satisfy the conditional expression, the shape of the lens can be effectively constrained. Thereby improving the aberration caused by the aperture and improving the 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 an image-side surface of the second lens and R8 is a radius of curvature of an image-side surface of the fourth lens. By controlling the curvature radius of the image side surface of the second lens and the curvature radius of the image side surface of the fourth lens to satisfy the conditional expression, the shape of the lens can be effectively constrained. Thereby improving the aberration caused by the aperture and improving the 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 a center thickness of the second lens on the optical axis and T12 is a separation distance of the first lens and the second lens on the optical axis. The ratio of the central 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 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)/Σ AT < 0.7, where CT5 is a central thickness of the fifth lens on the optical axis, CT6 is a central thickness of the sixth lens on the optical axis, and Σ AT is a sum of separation distances of any adjacent two lenses of the first to sixth lenses on the optical axis. Illustratively, Σ AT — T12+ T23+ T34+ T45+ T56. By controlling the condition, the total length of the optical imaging lens is shortened, and meanwhile, the central thicknesses of the fifth lens and the sixth lens are controlled within a reasonable range, so that the stability of the lens structure is kept. More specifically, CT5, CT6, and Σ AT may satisfy 0.38 < (CT5+ CT6)/Σ AT < 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 an optical axis and ET3 is an edge thickness of the third lens. The ratio of the central thickness and the edge thickness of the third lens is controlled, so that the third lens is beneficial to processing and forming. More specifically, CT3 and ET3 satisfy 0.55 < CT3/ET3 < 0.70.

The optical imaging lens according to the above-described 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 type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the machinability 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 further has excellent optical performances of miniaturization, large field angle, high imaging quality, easiness in processing and the like.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the 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 aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.

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

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the 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 structural diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

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

Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the 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 face S1 of the first lens E1 to the imaging face S15 is 5.10mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 58.5 °.

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

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. The high-order term coefficients A usable for the aspherical mirror surfaces S1 to S12 in example 1 are shown in Table 2-1 and Table 2-2 below₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈、A₂₀、A₂₂And A₂₄。

Flour mark

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

Flour mark	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

Tables 2 to 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a 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 according to 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 parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order 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 face S1 of the first lens E1 to the imaging face S15 is 5.41mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 55.6 °.

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

TABLE 3

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. 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 chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order 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 face S1 of the first lens E1 to the imaging face S15 is 5.63mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 53.7 °.

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

TABLE 5

Flour mark

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 represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a 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 according to 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 structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order 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 face S1 of the first lens E1 to the imaging face S15 is 5.53mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 54.9 °.

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

TABLE 7

Flour mark

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 represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. 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 chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order 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 face S1 of the first lens E1 to the imaging face S15 is 5.11mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 58.6 °.

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

TABLE 9

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to 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 view of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, 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 a filter E7.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from the object passes through the respective surfaces S1 to S14 in order 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 face S1 of the first lens E1 to the imaging face S15 is 5.20mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging face 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 Semi-FOV of the maximum angle of view is 57.9 °.

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

TABLE 11

Flour mark

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 represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

In summary, examples 1 to 6 each satisfy the relationship shown in table 13.

Conditional expression (A) example	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

Watch 13

The present application also provides an imaging Device, which is provided with an electron sensing element to form an image, wherein the electron sensing element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens;

a second lens having a positive optical power;

a third lens element having a concave image-side surface;

a fourth lens;

a fifth lens element having a concave object-side surface; and

a sixth lens element having a concave object-side surface;

wherein half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfies Semi-FOV > 50 °;

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 meet the condition that-1.6 < f/R11 < -0.5.

2. The optical imaging lens of claim 1, characterized in that the optical imaging lens further comprises a diaphragm;

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 that SD/SL is more than 0.5 and less than 1.0.

3. The optical imaging lens of claim 1, wherein 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.

4. The optical imaging lens of claim 1, wherein 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 0.5 < f/f345 < 1.5.

5. The optical imaging lens of claim 1, wherein the edge thickness ET2 of the second lens and the central thickness CT2 of the second lens on the optical axis satisfy 0.3 < ET2/CT2 < 0.8.

6. The optical imaging lens of 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 0.2 < ET4/CT4 < 0.7.

7. The optical imaging lens of claim 1, wherein an on-axis distance SAG51 between an intersection point of an object-side surface of the fifth lens and the optical axis to a vertex of an effective radius of the object-side surface of the fifth lens and an on-axis distance SAG42 between an intersection point of an image-side surface of the fourth lens and the optical axis to a vertex of an effective radius of the image-side surface of the fourth lens satisfy 0.8 < SAG51/SAG42 < 1.3.

8. The optical imaging lens according to claim 1, wherein an on-axis distance SAG11 between an intersection point of an object-side surface of the first lens and the optical axis to a vertex of an effective radius of the object-side surface of the first lens and an on-axis distance SAG12 between an intersection point of an image-side surface of the first lens and the optical axis to a vertex of an effective radius of the image-side surface of the first lens satisfy 0.4 < SAG12/(SAG11+ SAG12) < 1.5.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that the first lens has a negative optical power;

the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface;

the image side surface of the fourth lens is a convex surface;

the image side surface of the fifth lens is a convex surface;

the sixth lens has negative focal power, and the image side surface of the sixth lens is concave.

10. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens;

a second lens having a positive optical power;

a third lens element having a concave image-side surface;

a fourth lens;

a fifth lens element having a concave object-side surface; and

a sixth lens element having a concave object-side surface;

a center thickness CT2 of the second lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 0.7 < CT2/T12 < 1.2.