CN114815157B - Optical imaging lens - Google Patents

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a sixth lens having optical power. The optical imaging lens satisfies: imgH > 5.0mm, where ImgH is half the diagonal length of the effective pixel area on the imaging face of the optical imaging lens.

Description

Optical imaging lens

Technical Field

The application relates to the field of optical elements, in particular to an optical imaging lens.

Background

In daily life, portable electronic products such as smart phones and the like are not only communication equipment, but also a facility for daily entertainment of people. Among them, the shooting capability of portable electronic products such as smartphones is one of the important functions of interest. Along with the development of science and technology, the shooting professionals of portable electronic products such as smart phones are gradually improved. Therefore, how to design an optical imaging lens with a large image surface mounted on a portable electronic product has become one of the challenges for many lens designers to solve.

Disclosure of Invention

An aspect of the present application provides an optical imaging lens sequentially including, from an object side to an image side along an optical axis: a first lens having optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a sixth lens having optical power. The optical imaging lens can satisfy: imgH > 5.0mm, where ImgH is half the diagonal length of the effective pixel area on the imaging face of the optical imaging lens.

In one embodiment, 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.

In one embodiment, the optical imaging lens may satisfy: 1.5 < f1/R1 < 2.0, where f1 is the effective focal length of the first lens and R1 is the radius of curvature of the object-side surface of the first lens.

In one embodiment, the optical imaging lens may satisfy: -2.5 < f/f2 < -1.5, where f is the total effective focal length of the optical imaging lens and f2 is the effective focal length of the second lens.

In one embodiment, the optical imaging lens may satisfy: -2.0 < f3/R6 < -1.5, wherein f3 is the effective focal length of the third lens and R6 is the radius of curvature of the image side of the third lens.

In one embodiment, the optical imaging lens may satisfy: 1.0 < f4/R7 < 2.0, wherein f4 is the effective focal length of the fourth lens, and R7 is the radius of curvature of the object-side surface of the fourth lens.

In one embodiment, the optical imaging lens may satisfy: 2.0 < f6/f5 < 4.5, where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens.

In one embodiment, the optical imaging lens may satisfy: 1.0 < (R3+R4)/(R3-R4) < 2.0, wherein R3 is the radius of curvature of the object-side surface of the second lens and R4 is the radius of curvature of the image-side surface of the second lens.

In one embodiment, the optical imaging lens may satisfy: -2.0 < (r9+r10)/(R9-R10) < -1.0, wherein R9 is the radius of curvature of the object-side surface of the fifth lens and R10 is the radius of curvature of the image-side surface of the fifth lens.

In one embodiment, the optical imaging lens may satisfy: 1.5 < ET5/ET4 < 3.0, wherein ET4 is the edge thickness of the fourth lens and ET5 is the edge thickness of the fifth lens.

In one embodiment, the optical imaging lens may satisfy: 3.0 < ΣAT/T45 < 4.0, wherein ΣAT is the sum of the air intervals on the optical axis of any adjacent two lenses of the first lens to the sixth lens, and T45 is the air interval on the optical axis of the fourth lens and the fifth lens.

In one embodiment, the optical imaging lens may satisfy: 4.5 < Σct/CT4 < 5.5, wherein Σct is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

In one embodiment, the optical imaging lens may satisfy: 1.0 < T56/CT6 < 2.0, wherein CT6 is the center thickness of the sixth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis.

In one embodiment, the optical imaging lens may satisfy: 1.5 < (SAG 51-SAG 52)/(SAG51+SAG52) < 3.5, wherein SAG51 is the distance on the optical axis between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, and SAG52 is the distance on the optical axis between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens.

In one embodiment, the optical imaging lens may satisfy: 1.0 < (SAG 41-SAG 42)/(SAG41+SAG42) < 3.0, wherein SAG41 is the distance on the optical axis between the intersection of the object side surface of the fourth lens and the optical axis and the vertex of the effective radius of the object side surface of the fourth lens, and SAG42 is the distance on the optical axis between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens.

In one embodiment, the optical imaging lens may satisfy: 3.0 < SAG11/SAG32 < -1.5, wherein SAG11 is the distance on the optical axis between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, SAG32 is the distance on the optical axis between the intersection of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens.

In one embodiment, the optical imaging lens may satisfy: f/EPD is less than or equal to 2.5, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens.

In one embodiment, the optical imaging lens may satisfy: 20 DEG < FOV < 40 DEG, wherein FOV is the maximum field angle of the optical imaging lens.

In one embodiment, the optical imaging lens may satisfy: TTL/f is less than 1.1, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and f is the total effective focal length of the optical imaging lens.

In one embodiment, the optical imaging lens further includes a refractive device located between the object side and the first lens for refracting the light of the object side to the object side of the first lens.

The application provides the optical imaging lens which is applicable to portable electronic products and has at least one of the beneficial effects of large image surface, good imaging quality and the like by reasonably distributing the focal power of each lens and optimizing the optical parameters.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

fig. 1 shows a schematic configuration diagram 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 astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;

Fig. 9 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;

fig. 13 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 7 of the present application;

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7; and

fig. 15 illustrates a schematic structure of an optical imaging lens according to an exemplary embodiment of the present application.

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, then 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 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 an exemplary embodiment of the present application may include six lenses having optical power, namely, 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 two adjacent lenses from the first lens to the sixth lens can have a spacing distance therebetween.

In an exemplary embodiment, the first lens may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens element with negative refractive power may have a concave object-side surface and a convex image-side surface; and the sixth lens may have positive or negative optical power.

In an exemplary embodiment, by setting the third lens and the fourth lens to have positive optical power, it is advantageous to increase the angle of view of the optical imaging lens, while it is advantageous to compress the angle of incidence of light at the object side, reduce pupil aberration, and improve imaging quality; the fifth lens is provided with negative focal power, the object side surface of the fifth lens is concave, and the image side surface of the fifth lens is convex, so that the off-axis incident angle of light rays is reduced, and the tolerance sensitivity of the lens is reduced.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: imgH > 5.0mm, where ImgH is half the diagonal length of the effective pixel area on the imaging face of the optical imaging lens. Satisfies ImgH > 5.0mm, and can realize the imaging effect of the large image surface of the optical imaging lens, so that the lens has higher resolution.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < f1/R1 < 2.0, where f1 is the effective focal length of the first lens and R1 is the radius of curvature of the object-side surface of the first lens. Satisfies 1.5 < f1/R1 < 2.0, is favorable for reasonably controlling the deflection angle of the edge view field in the first lens, and is favorable for effectively reducing the sensitivity of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.5 < f/f2 < -1.5, where f is the total effective focal length of the optical imaging lens and f2 is the effective focal length of the second lens. Satisfies-2.5 < f/f2 < -1.5, is favorable for restricting the on-axis spherical aberration generated by the second lens to a reasonable interval, and is favorable for ensuring the imaging quality of the on-axis visual field.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.0 < f3/R6 < -1.5, wherein f3 is the effective focal length of the third lens and R6 is the radius of curvature of the image side of the third lens. Satisfies-2.0 < f3/R6 < -1.5, is favorable for better correcting chromatic aberration, improves imaging quality, and is favorable for reducing the problem of lens tolerance sensitivity increase caused by excessive focal power concentration and excessive surface bending of the third lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < f4/R7 < 2.0, wherein f4 is the effective focal length of the fourth lens, and R7 is the radius of curvature of the object-side surface of the fourth lens. Satisfies 1.0 < f4/R7 < 2.0, is favorable for reasonably controlling the focal power distribution of each lens, shortens the total length of the lens, realizes miniaturization of the lens, and is favorable for reducing the tolerance sensitivity of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.0 < f6/f5 < 4.5, where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens. Satisfying 2.0 < f6/f5 < 4.5, the deflection angle of light between the fifth lens and the sixth lens can be reduced, thereby reducing the sensitivity of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (R3+R4)/(R3-R4) < 2.0, wherein R3 is the radius of curvature of the object-side surface of the second lens and R4 is the radius of curvature of the image-side surface of the second lens. The optical imaging lens satisfies that (R3+R4)/(R3-R4) is less than 2.0, can correct chromatic aberration of the optical imaging lens, and can offset aberration generated by the second lens and aberration generated by other lenses, thereby reducing integral aberration of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.0 < (r9+r10)/(R9-R10) < -1.0, wherein R9 is the radius of curvature of the object-side surface of the fifth lens and R10 is the radius of curvature of the image-side surface of the fifth lens. Satisfying-2.0 < (R9+R10)/(R9-R10) < -1.0, can effectively control the aberration generated by the optical imaging lens in the fifth lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < ET5/ET4 < 3.0, wherein ET4 is the edge thickness of the fourth lens and ET5 is the edge thickness of the fifth lens. Satisfies 1.5 < ET5/ET4 < 3.0, is favorable for making the lens size distribution of each lens uniform, is favorable for effectively reducing the size of the optical imaging lens, avoids the overlarge volume of the optical imaging lens, reduces the assembly difficulty of the lens and realizes higher space utilization.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0 < ΣAT/T45 < 4.0, wherein ΣAT is the sum of the air intervals on the optical axis of any adjacent two lenses of the first lens to the sixth lens, and T45 is the air interval on the optical axis of the fourth lens and the fifth lens. Meets the requirement that Sigma AT/T45 is less than 4.0 and can not only effectively reduce the gap sensitivity of the lens but also correct the field curvature of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 4.5 < Σct/CT4 < 5.5, wherein Σct is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis. Meets 4.5 < ΣCT/CT4 < 5.5, can effectively reduce the thickness sensitivity of the lens, and can meet the requirement of miniaturization of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < T56/CT6 < 2.0, wherein CT6 is the center thickness of the sixth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis. The lens satisfies the conditions that T56/CT6 is smaller than 1.0 and smaller than 2.0, is beneficial to making the size distribution of each lens uniform, improving the assembly stability, reducing the integral aberration of the lens and shortening the total length of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < (SAG 51-SAG 52)/(SAG51+SAG52) < 3.5, wherein SAG51 is the distance on the optical axis between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, and SAG52 is the distance on the optical axis between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens. Satisfies 1.5 < (SAG 51-SAG 52)/(SAG51+SAG52) < 3.5, is favorable for adjusting the angle of the principal ray of the optical imaging lens, is favorable for effectively improving the relative brightness of the optical imaging lens and the definition of an image plane.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (SAG 41-SAG 42)/(SAG41+SAG42) < 3.0, wherein SAG41 is the distance on the optical axis between the intersection of the object side surface of the fourth lens and the optical axis and the vertex of the effective radius of the object side surface of the fourth lens, and SAG42 is the distance on the optical axis between the intersection of the image side surface of the fourth lens and the optical axis and the vertex of the effective radius of the image side surface of the fourth lens. Satisfies 1.0 < (SAG 41-SAG 42)/(SAG41+SAG42) < 3.0, is favorable for avoiding the fourth lens from being excessively bent, reduces the processing difficulty, and is favorable for ensuring higher stability of the assembly of the optical imaging lens.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0 < SAG11/SAG32 < -1.5, wherein SAG11 is the distance on the optical axis between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, SAG32 is the distance on the optical axis between the intersection of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens. Meets the condition that SAG11/SAG32 is less than-3.0 and less than-1.5, is beneficial to reducing the sensitivity of the first lens and the third lens and is beneficial to the processing and forming of the lenses.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f/EPD is less than or equal to 2.5, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. Satisfies F/EPD less than or equal to 2.5, is favorable for enabling the optical imaging lens to have the characteristics of a large image plane and a small F number, enables the lens to have a large aperture, and has good imaging quality in a dark environment.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 20 DEG < FOV < 40 DEG, wherein FOV is the maximum field angle of the optical imaging lens. Illustratively, the FOV may further satisfy: 34 DEG < FOV < 40 deg. The imaging range of the lens can be effectively controlled by satisfying the condition that the FOV is smaller than 40 degrees and 20 degrees.

In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: TTL/f is less than 1.1, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and f is the total effective focal length of the optical imaging lens. The TTL/f is smaller than 1.1, and the optical imaging lens has long focal length.

In an exemplary embodiment, the total effective focal length f of the optical imaging lens may be in the range of 14.5mm to 15.5 mm; the effective focal length f1 of the first lens may be in the range of 8.5mm to 10.0 mm; the effective focal length f2 of the second lens can be in the range of-8.5 mm to-7.0 mm; the effective focal length f3 of the third lens can be in the range of 13.5 mm-16.0 mm; the effective focal length f4 of the fourth lens can be in the range of 11.0 mm-13.5 mm; the effective focal length f5 of the fifth lens can be in the range of-14.0 mm to-9.0 mm; and the effective focal length f6 of the sixth lens may be in the range of-45 mm to-25 mm.

In an exemplary embodiment, a distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on the optical axis may be in a range of 15mm to 20 mm; half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens can be in the range of 5.0 mm-6.0 mm; and half of the Semi-FOV of the maximum field angle of the optical imaging lens may be in the range of 17 ° to 22 °.

In an exemplary embodiment, as shown in fig. 15, the optical imaging lens according to the present application further includes a refractive device L between the object side and the first lens for redirecting the light of the object side to the object side of the first lens. Illustratively, the refractive device L may include a prism having a transmission and/or reflection effect on light, and by disposing the refractive device L between the object side and the first lens, the total length of the optical imaging lens is advantageously shortened, thereby achieving miniaturization of the lens.

In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the object side and the first 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. The application provides an optical imaging lens with the characteristics of miniaturization, long focus, large image surface, large aperture, high imaging quality and the like. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, the above six lenses. 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, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.

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 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 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 includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. 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 convex. 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 concave. 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. Light from the 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 this example, the total effective focal length f of the optical imaging lens is 15.43mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens) is 16.00mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.27mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is 18.4.

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:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=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 aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S12 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ And A ₂₀ 。

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-7.0753E-03

-3.7969E-03

2.2237E-04

3.9397E-04

1.7269E-04

6.6902E-05

2.1235E-05

1.0415E-05

5.5167E-06

S2

1.1090E-01

-1.3132E-02

2.7557E-03

-4.1979E-04

-3.1383E-05

2.7182E-05

1.0263E-04

-6.5427E-07

-9.0539E-07

S3

-1.9959E-01

2.1712E-02

-2.6489E-03

-1.0698E-04

-1.4245E-04

-4.1377E-05

6.0514E-05

-7.0790E-06

-5.4337E-07

S4

-3.2151E-01

2.8733E-02

-7.3604E-04

9.5421E-05

-2.6575E-04

-8.0156E-05

1.9570E-05

-1.4557E-06

-6.8046E-07

S5

1.8974E-02

-5.5985E-03

4.0905E-03

-6.7427E-06

-3.2933E-04

-1.6601E-04

3.3756E-05

1.5079E-06

-5.2724E-06

S6

-2.3393E-02

-1.0882E-02

1.0083E-03

3.4494E-04

-1.6517E-04

-5.5229E-05

2.8324E-05

-5.1704E-06

1.2035E-07

S7

-4.5093E-02

8.6535E-03

8.4957E-04

5.2704E-04

-1.3122E-04

1.1613E-05

2.7866E-05

-7.7168E-06

9.3403E-07

S8

-1.4126E-01

1.3313E-02

-1.2811E-04

5.2301E-04

5.7951E-06

1.0478E-05

1.1708E-05

-2.2719E-06

1.6133E-06

S9

1.3371E-02

-1.5321E-02

7.9117E-04

7.6569E-04

-6.5961E-05

3.9770E-05

4.6520E-06

-2.5733E-06

9.9060E-07

S10

2.2215E-01

-1.7613E-02

-8.0935E-04

7.1245E-04

-1.2530E-04

7.9230E-06

-3.4681E-07

-5.0749E-06

1.1909E-06

S11

-3.7101E-01

7.9723E-03

-5.8021E-03

3.8982E-04

-1.8755E-04

-8.3902E-06

-1.0185E-05

-1.2925E-05

-3.1236E-06

S12

-6.2220E-01

1.9190E-02

-8.4937E-03

7.8485E-04

-2.9685E-04

1.0753E-05

-5.7138E-06

-1.2251E-05

2.8925E-06

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass 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 image heights. 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 includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive 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 negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. 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 convex. 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 concave. 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. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 15.40mm, the total length TTL of the optical imaging lens is 16.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.32mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 18.6 °.

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

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-5.3744E-03

-4.7332E-03

-1.5357E-04

2.2583E-04

8.0869E-05

2.2945E-05

-2.8962E-07

2.7706E-06

-1.1739E-06

S2

1.0995E-01

-1.1916E-02

2.7010E-03

-3.7035E-04

-1.0832E-04

3.1310E-05

8.8325E-05

-2.8837E-05

-6.1681E-06

S3

-2.0164E-01

2.2898E-02

-2.4626E-03

-1.4882E-05

-1.2607E-04

-2.5570E-05

6.6562E-05

-1.3385E-05

-1.3950E-06

S4

-3.2496E-01

2.8513E-02

-2.2595E-04

4.5009E-04

-3.6284E-06

4.0412E-05

6.2840E-05

7.7197E-06

3.8336E-06

S5

2.0573E-02

-6.0630E-03

4.1468E-03

8.8662E-05

-3.3566E-04

-1.4028E-04

5.1957E-05

-4.8394E-07

-1.2100E-06

S6

-9.7491E-02

-3.3017E-02

-4.3066E-03

-5.1140E-03

-2.6136E-03

-3.8895E-04

-1.4367E-04

-1.3211E-04

-6.2614E-06

S7

-4.5638E-02

8.8720E-03

8.6708E-04

5.1682E-04

-1.4125E-04

7.1998E-06

2.6310E-05

-8.2465E-06

7.9142E-07

S8

-1.4340E-01

1.3122E-02

-1.1056E-04

5.6277E-04

1.9977E-06

1.1459E-05

1.1399E-05

-4.2570E-06

1.3023E-06

S9

1.4045E-02

-1.5615E-02

5.9634E-04

8.6614E-04

-6.0009E-05

3.1729E-05

-3.8855E-07

-7.1061E-06

1.7371E-06

S10

2.2252E-01

-1.8081E-02

-8.7685E-04

7.9719E-04

-1.0148E-04

1.4156E-05

1.0487E-06

-5.1960E-06

8.9215E-07

S11

-3.7179E-01

8.6765E-03

-5.0400E-03

5.7710E-04

-1.1789E-04

3.7162E-05

4.5677E-06

-8.6068E-06

-9.4979E-07

S12

-6.2459E-01

2.1179E-02

-7.7896E-03

9.2575E-04

-2.6254E-04

3.3705E-05

-2.4897E-07

-1.1838E-05

2.2693E-06

TABLE 4 Table 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass 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 image heights. 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. 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 concave. 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. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 15.38mm, the total length TTL of the optical imaging lens is 16.01mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.35mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 18.6 °.

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

-7.1731E-03

-3.1997E-03

6.4773E-04

5.1025E-04

1.5805E-04

5.7942E-05

1.4826E-05

9.5101E-06

-2.1924E-07

S2

1.1274E-01

-1.1620E-02

3.8976E-03

-2.2779E-04

1.8977E-04

9.2556E-05

8.8748E-05

-1.5929E-05

-1.3898E-05

S3

-2.0217E-01

2.2587E-02

-2.5007E-03

-8.0537E-05

-1.8872E-05

3.2103E-06

5.9644E-05

-5.6149E-06

-5.6296E-06

S4

-3.2752E-01

2.9512E-02

-4.3301E-04

7.2622E-04

1.3130E-04

7.4114E-05

6.3474E-05

9.7083E-06

2.3499E-06

S5

2.0664E-02

-6.0467E-03

4.5756E-03

2.4745E-04

-1.9520E-04

-9.2471E-05

7.1870E-05

6.5682E-07

7.7693E-07

S6

-2.2836E-02

-1.0766E-02

9.7511E-04

3.6058E-04

-1.6883E-04

-5.7740E-05

2.9200E-05

-5.0167E-06

1.5205E-07

S7

-4.5408E-02

8.6899E-03

8.7111E-04

5.0019E-04

-1.3708E-04

1.0067E-05

2.5518E-05

-8.2160E-06

8.1488E-07

S8

-1.4537E-01

1.3192E-02

-3.3801E-04

5.4209E-04

-1.6404E-05

6.2083E-06

1.3396E-05

-4.4004E-06

9.5541E-07

S9

1.2808E-02

-1.6421E-02

3.2958E-04

7.8283E-04

-8.3572E-05

2.6671E-05

1.8708E-07

-4.2266E-06

6.8556E-07

S10

3.9194E-01

-4.8282E-02

3.3327E-03

1.6001E-03

-1.0840E-03

-1.6359E-04

-5.7666E-05

1.6941E-05

1.0842E-05

S11

-3.7344E-01

9.6255E-03

-5.3198E-03

5.5599E-04

-9.2139E-05

3.8934E-05

3.2752E-06

-7.1367E-06

4.4616E-08

S12

-6.2878E-01

2.0052E-02

-8.1032E-03

8.8089E-04

-2.3454E-04

3.6635E-05

-7.0942E-07

-1.2433E-05

2.2449E-06

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent 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 image heights. 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. 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 concave. 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 convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 15.22mm, the total length TTL of the optical imaging lens is 16.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.40mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 18.9 °.

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

-1.1489E-02

-2.0658E-03

1.0491E-03

5.2253E-04

1.5322E-04

3.9849E-05

4.4965E-06

3.4305E-06

-1.2001E-06

S2

1.1119E-01

-6.8254E-03

6.9645E-03

3.5852E-04

7.4354E-04

-3.8068E-05

2.1442E-04

-5.6872E-05

2.4443E-05

S3

-2.0456E-01

2.2543E-02

-2.3600E-03

-8.0034E-05

2.4780E-04

-1.4848E-04

1.2882E-04

-4.7091E-05

7.7252E-06

S4

-3.3104E-01

2.9012E-02

-1.2630E-03

7.0569E-04

1.2514E-04

6.1212E-05

5.5614E-05

-2.8484E-07

-2.5438E-06

S5

2.3196E-02

-5.4348E-03

4.8222E-03

4.2815E-04

-1.0622E-04

-4.9204E-05

8.4745E-05

2.0297E-06

-3.1974E-06

S6

-2.2427E-02

-1.1013E-02

9.0496E-04

4.0582E-04

-1.6073E-04

-5.8325E-05

3.2855E-05

-4.6862E-06

1.1389E-07

S7

-4.4812E-02

8.7406E-03

6.3470E-04

4.7058E-04

-1.3964E-04

1.1249E-05

2.4419E-05

-7.3171E-06

6.4657E-07

S8

-1.4823E-01

1.3433E-02

-6.8095E-04

4.8180E-04

-1.7840E-05

-2.9675E-06

1.3546E-05

-3.2991E-06

6.1348E-07

S9

9.3778E-03

-1.7182E-02

-4.7743E-05

7.1107E-04

-9.5148E-05

1.8708E-05

5.6889E-06

-3.5066E-06

2.9904E-07

S10

4.0590E-01

-5.0065E-02

1.7404E-03

2.0550E-03

-6.4463E-04

3.8222E-06

-2.4192E-05

-4.2295E-06

2.2317E-06

S11

-3.5745E-01

7.6035E-03

-5.7700E-03

4.5564E-04

-1.2979E-04

2.7947E-05

6.7596E-06

-6.3017E-06

6.6105E-07

S12

-6.2812E-01

1.7719E-02

-8.2169E-03

7.9397E-04

-2.4560E-04

3.0720E-05

8.7418E-06

-1.0094E-05

1.3599E-06

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent 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 image heights. 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. 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 convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 15.19mm, the total length TTL of the optical imaging lens is 16.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.40mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 19.0 °.

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

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-9.0600E-03

-9.1968E-04

1.3519E-03

5.8102E-04

1.6761E-04

4.2385E-05

3.9683E-06

2.5867E-06

-1.4903E-06

S2

1.0825E-01

-5.7569E-03

8.6462E-03

3.8263E-04

8.6243E-04

-1.4448E-04

2.3177E-04

-6.3872E-05

3.8510E-05

S3

-2.0924E-01

2.0088E-02

-1.7111E-03

-2.5267E-04

3.2243E-04

-2.1596E-04

1.2931E-04

-5.4505E-05

9.7284E-06

S4

-3.2794E-01

3.1136E-02

-3.9284E-04

1.0277E-03

2.6394E-04

1.1929E-04

7.6984E-05

3.4834E-06

-3.1590E-06

S5

2.7220E-02

-4.6243E-03

4.7854E-03

5.0378E-04

-7.2234E-05

-2.3252E-05

9.7848E-05

8.4147E-06

-1.9222E-06

S6

-2.3408E-02

-1.1336E-02

6.9713E-04

3.9010E-04

-1.6961E-04

-6.2723E-05

3.3105E-05

-4.0387E-06

-4.5632E-09

S7

-4.6053E-02

8.0869E-03

5.2040E-04

4.7742E-04

-1.3395E-04

1.5426E-05

2.4352E-05

-7.1382E-06

5.1318E-07

S8

-1.4799E-01

1.3145E-02

-1.0132E-03

4.7750E-04

-1.2268E-05

-3.4151E-06

1.1802E-05

-2.8488E-06

5.5678E-07

S9

1.1834E-02

-1.6963E-02

-1.2004E-04

7.7920E-04

-1.0554E-04

1.8876E-05

5.2344E-06

-3.1000E-06

2.9896E-07

S10

4.0025E-01

-5.2831E-02

1.8429E-03

1.9474E-03

-6.1502E-04

3.2575E-05

-9.3420E-06

-5.1139E-06

8.9057E-07

S11

-3.4681E-01

4.5659E-03

-5.8310E-03

3.4589E-04

-1.3248E-04

1.8290E-05

5.8786E-06

-6.4376E-06

7.2554E-07

S12

-6.2024E-01

1.6234E-02

-7.8620E-03

7.3946E-04

-2.2615E-04

2.4084E-05

9.3093E-06

-8.9888E-06

1.2416E-06

Table 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent 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 image heights. 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive 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 negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. 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 convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 14.94mm, the total length TTL of the optical imaging lens is 16.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.46mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 19.5 °.

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

-7.1638E-03

-4.2463E-04

1.5239E-03

6.4160E-04

1.5755E-04

2.3529E-05

1.8482E-06

3.9986E-07

-7.5012E-07

S2

1.0448E-01

7.6458E-03

6.1379E-03

8.8517E-04

-1.2667E-03

-1.4308E-04

-1.5550E-04

-1.8566E-05

2.7501E-05

S3

-2.0951E-01

2.7843E-02

-3.7139E-03

9.5083E-04

-5.8412E-04

6.4471E-05

-3.2409E-05

-3.2659E-05

1.1289E-05

S4

-3.3004E-01

3.2004E-02

-2.1209E-04

9.6773E-04

1.4962E-04

1.3549E-04

4.2757E-05

-1.8362E-05

-3.3001E-06

S5

3.4309E-02

-6.1085E-03

4.9677E-03

5.2183E-04

-1.1463E-04

7.1737E-06

1.0010E-04

2.7466E-07

-4.7224E-06

S6

-2.7348E-02

-1.1469E-02

5.9230E-04

4.1396E-04

-1.7845E-04

-6.1571E-05

3.3698E-05

-3.1844E-06

-3.4152E-07

S7

-4.7944E-02

7.9991E-03

5.1444E-04

4.9064E-04

-1.2687E-04

1.3374E-05

2.2766E-05

-7.2549E-06

5.3440E-07

S8

-1.5244E-01

1.3415E-02

-1.1282E-03

4.8505E-04

-5.6634E-06

-7.4584E-06

9.8331E-06

-2.1168E-06

4.0947E-07

S9

1.4361E-02

-1.6478E-02

5.7250E-05

8.6422E-04

-9.1564E-05

1.2409E-05

8.8133E-06

-3.1178E-06

1.7289E-07

S10

4.0445E-01

-5.4951E-02

9.4811E-04

1.8039E-03

-4.2341E-04

4.5493E-05

1.3307E-05

-8.9749E-06

-3.9117E-08

S11

-3.1072E-01

6.8812E-04

-5.6248E-03

6.7523E-06

-1.4281E-04

-4.1978E-06

1.8675E-06

-3.7797E-06

1.2998E-06

S12

-1.2521E+00

-2.1954E-02

-3.0662E-02

-1.5071E-03

-1.4313E-03

-4.7666E-05

-6.3090E-05

-3.3040E-06

3.8007E-06

Table 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent 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 image heights. 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.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an optical imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.

The first lens element E1 has positive 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 negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. 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 concave. 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 convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

In this example, the total effective focal length f of the optical imaging lens is 14.91mm, the total length TTL of the optical imaging lens is 16.00mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 5.51mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 19.6 °.

Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.

TABLE 13

TABLE 14

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.

In summary, examples 1 to 7 each satisfy the relationship shown in table 15.

TABLE 15

The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (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 persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. 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 (17)

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:

a first lens having positive optical power;

a second lens having negative optical power;

a third lens having positive optical power;

a fourth lens having positive optical power;

a fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface; and

a sixth lens having negative optical power;

the optical imaging lens satisfies the following conditions: imgH > 5.0 mm, 20 ° < FOV < 40 ° and 1.0 < f4/R7 < 2.0, wherein ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, FOV is the maximum field angle of the optical imaging lens, f4 is the effective focal length of the fourth lens, R7 is the radius of curvature of the object side of the fourth lens; and

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

2. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.5 < f1/R1 < 2.0, wherein f1 is the effective focal length of the first lens and R1 is the radius of curvature of the object-side surface of the first lens.

3. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: -2.5 < f/f2 < -1.5, wherein f is the total effective focal length of the optical imaging lens and f2 is the effective focal length of the second lens.

4. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: -2.0 < f3/R6 < -1.5, wherein f3 is the effective focal length of the third lens and R6 is the radius of curvature of the image side of the third lens.

5. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 2.0 < f6/f5 < 4.5, wherein f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens.

6. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.0 < (R3+R4)/(R3-R4) < 2.0, wherein R3 is the radius of curvature of the object side of the second lens and R4 is the radius of curvature of the image side of the second lens.

7. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: -2.0 < (r9+r10)/(R9-R10) < -1.0, wherein R9 is the radius of curvature of the object-side surface of the fifth lens and R10 is the radius of curvature of the image-side surface of the fifth lens.

8. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.5 < ET5/ET4 < 3.0, wherein ET4 is the edge thickness of the fourth lens and ET5 is the edge thickness of the fifth lens.

9. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 3.0 < Σat/T45 < 4.0, wherein Σat is the sum of air intervals on the optical axis of any adjacent two lenses of the first lens to the sixth lens, and T45 is the air interval on the optical axis of the fourth lens and the fifth lens.

10. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 4.5 < Σct/CT4 < 5.5, wherein Σct is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

11. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.0 < T56/CT6 < 2.0, wherein CT6 is the center thickness of the sixth lens on the optical axis, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis.

12. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.5 < (SAG 51-SAG 52)/(SAG51+SAG52) < 3.5, wherein SAG51 is a distance on the optical axis between an intersection point 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 SAG52 is a distance on the optical axis between an intersection point of the image side surface of the fifth lens and the optical axis and an effective radius vertex of the image side surface of the fifth lens.

13. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: 1.0 < (SAG 41-SAG 42)/(SAG41+SAG42) < 3.0, wherein SAG41 is the distance on the optical axis between the intersection of the object side surface of the fourth lens and the optical axis and the effective radius vertex of the object side surface of the fourth lens, and SAG42 is the distance on the optical axis between the intersection of the image side surface of the fourth lens and the optical axis and the effective radius vertex of the image side surface of the fourth lens.

14. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies: -3.0 < SAG11/SAG32 < -1.5, wherein SAG11 is the distance on the optical axis of the intersection of the object side of the first lens and the optical axis to the effective radius vertex of the object side of the first lens, SAG32 is the distance on the optical axis of the intersection of the image side of the third lens and the optical axis to the effective radius vertex of the image side of the third lens.

15. The optical imaging lens of any of claims 1-14, wherein the optical imaging lens satisfies: f/EPD is less than or equal to 2.5, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens.

16. The optical imaging lens of any of claims 1-14, wherein the optical imaging lens satisfies: TTL/f is less than 1.1, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and f is the total effective focal length of the optical imaging lens.

17. The optical imaging lens of any of claims 1-14, further comprising a refractive device between the object side and the first lens for redirecting light rays from the object side to the object side of the first lens.