CN112748546A - Optical imaging lens - Google Patents

Abstract

The application discloses optical imaging lens includes following preface from object side to image side along optical axis: a first lens having a negative optical power; a second lens with focal power, wherein 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; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens element having a negative refractive power, the object-side surface of which is concave; and a sixth lens having optical power. The maximum field angle FOV of the optical imaging lens satisfies the following conditions: the FOV is greater than or equal to 130 degrees.

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 rapid development of smart phones, people have higher and higher requirements on optical imaging lenses of mobile phones, the trend of using mobile phones to shoot instead of traditional cameras is more and more obvious at present, and the public is more and more favored for mobile phones with high-quality shooting functions. The picture shot by the wide-angle lens has wide background while highlighting the central main body and the foreground, can shoot more scenery in a smaller environment, is favorable for enhancing the infectivity of the picture, and enables a viewer to have a feeling of being personally on the scene.

Therefore, in view of the current development trend of the optical imaging lens of the mobile phone, it is desirable to provide an optical imaging lens with a wider wide angle and higher image quality to meet the higher requirements of people on the optical imaging lens of the portable electronic device such as the mobile phone.

Disclosure of Invention

The present application provides an optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising: a first lens having a negative optical power; a second lens with focal power, wherein 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; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens element having a negative refractive power, the object-side surface of which is concave; and a sixth lens having optical power. The maximum field angle FOV of the optical imaging lens can satisfy: the FOV is greater than or equal to 130 degrees.

In one embodiment, the optical imaging lens may further include a stop disposed between the third lens and the fourth lens.

In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: f3/f4 is more than 1.5 and less than 3.5.

In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f of the optical imaging lens satisfy: -2.5 < f5/f < -1.0.

In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f of the optical imaging lens satisfy: f6/f is more than 1.0 and less than 3.0.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the effective focal length f1 of the first lens may satisfy: r1/f1 is more than 1.5 and less than 3.0.

In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: -3.5 < R10/R9 < -1.5.

In one embodiment, the effective focal length f2 of the second lens and the effective focal length f of the optical imaging lens satisfy: f2/f is more than 4.0 and less than 10.0.

In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R7 of the object-side surface of the fourth lens may satisfy: -2.5 < R7/R6 < -0.5.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis may satisfy: 1.0 < CT1/T12 < 2.5.

In one embodiment, the radius of curvature R4 of the image-side surface of the second lens, the radius of curvature R5 of the object-side surface of the third lens, and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 1.0 < (R4+ R8)/R5 < 2.5.

In one embodiment, the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis may satisfy: 1.0 < CT2/CT3 < 2.5.

In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 1.0 < CT6/CT4 < 3.0.

In one embodiment, the radius of curvature R2 of the image-side surface of the first lens and the effective focal length f of the optical imaging lens satisfy: r2/f is more than 1.0 and less than 2.0.

In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH is more than 2.0 and less than 3.0.

In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD is more than 1.5 and less than 2.5.

Another 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 having a negative optical power; a second lens having a positive optical power; a third lens having a positive optical power; a fourth lens having a positive optical power; a fifth lens having a negative optical power; and a sixth lens having positive optical power. The maximum field angle FOV of the optical imaging lens can satisfy: the FOV is greater than or equal to 130 degrees.

In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: f3/f4 is more than 1.5 and less than 3.5.

In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f of the optical imaging lens satisfy: -2.5 < f5/f < -1.0.

In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f of the optical imaging lens satisfy: f6/f is more than 1.0 and less than 3.0.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the effective focal length f1 of the first lens may satisfy: r1/f1 is more than 1.5 and less than 3.0.

In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: -3.5 < R10/R9 < -1.5.

In one embodiment, the effective focal length f2 of the second lens and the effective focal length f of the optical imaging lens satisfy: f2/f is more than 4.0 and less than 10.0.

In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R7 of the object-side surface of the fourth lens may satisfy: -2.5 < R7/R6 < -0.5.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis may satisfy: 1.0 < CT1/T12 < 2.5.

In one embodiment, the radius of curvature R4 of the image-side surface of the second lens, the radius of curvature R5 of the object-side surface of the third lens, and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 1.0 < (R4+ R8)/R5 < 2.5.

In one embodiment, the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis may satisfy: 1.0 < CT2/CT3 < 2.5.

In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 1.0 < CT6/CT4 < 3.0.

In one embodiment, the radius of curvature R2 of the image-side surface of the first lens and the effective focal length f of the optical imaging lens satisfy: r2/f is more than 1.0 and less than 2.0.

In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH is more than 2.0 and less than 3.0.

In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD is more than 1.5 and less than 2.5.

The six-piece type lens framework is adopted, and the optical imaging lens has a large field angle through reasonable distribution of focal power and surface type, and meanwhile, the imaging quality is improved.

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. In this document, the surface of each lens closest to the subject is referred to as the object-side surface of the lens, and the surface of each lens closest to the image plane is referred to as 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.

In an exemplary embodiment, the first lens has a positive or negative power; the second lens has positive focal power or negative focal power; the third lens has positive focal power; the fourth lens has positive focal power or negative focal power; the fifth lens has negative focal power; the sixth lens has positive power or negative power. By reasonably distributing the focal power and the surface type of each lens of the optical imaging lens, the optical imaging lens has the advantage of large field angle, and simultaneously, the off-axis aberration of the optical imaging lens is favorably corrected, and the imaging quality is improved.

In an exemplary embodiment, the object-side surface of the second lens may be convex and the image-side surface may be convex. The object side surface of the fifth lens may be concave. The optical power and the surface type of the second lens are reasonably matched, so that the second lens has good processability, and the optical imaging lens has the advantage of large field angle. The optical power of the third lens is reasonably matched, so that the field angle is increased, the off-axis aberration of the optical imaging lens is corrected, and the imaging quality is improved. The object side surface of the fifth lens is set to be a concave surface, so that the FOV of the system is improved, light rays can be better converged, and the image quality of the system is improved.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression FOV ≧ 130 °, where FOV is the maximum angle of view of the optical imaging lens. The FOV of more than or equal to 130 degrees is satisfied, so that the object information with wider range can be obtained.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0 < TTL/ImgH < 3.0, where TTL is a distance on an optical axis from an object side surface of the first lens to an imaging surface, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface. By controlling the ratio of TTL to ImgH within the range, the imaging definition of the system can be effectively improved, and the optical total length of the system is prevented from being too long, so that the optical imaging lens is favorably applied to portable electronic equipment. More specifically, the ratio of TTL to ImgH can satisfy 2.2 < TTL/ImgH < 2.8.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 < f/EPD < 2.5, where f is an effective focal length of the optical imaging lens and EPD is an entrance pupil diameter of the optical imaging lens. By controlling the ratio of the effective focal length of the optical imaging lens to the entrance pupil diameter of the optical imaging lens in the range, the system can be ensured to have large aperture and good imaging quality in a dark environment. More specifically, f and EPD may satisfy 1.7 < f/EPD < 2.3.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 < f3/f4 < 3.5, where f3 is an effective focal length of the third lens and f4 is an effective focal length of the fourth lens. By controlling the ratio of the effective focal length of the third lens to the effective focal length of the fourth lens within the range, the imaging quality can be improved, the focal power of the fourth lens can be reduced, and the error sensitivity of product manufacturing can be reduced. More specifically, f3 and f4 may satisfy: f3/f4 is more than 1.7 and less than 3.4.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5 < f5/f < -1.0, where f5 is an effective focal length of the fifth lens, and f is an effective focal length of the optical imaging lens. By controlling the ratio of the effective focal length of the fifth lens to the effective focal length of the optical imaging lens to be within the range, the spherical aberration contributed by the fifth lens can be within a reasonable controllable range, the later optical lens can reasonably correct the contributed spherical aberration, and the image quality of the field of view on the system axis is better ensured. More specifically, f5 and f can satisfy-2.4 < f5/f < -1.2.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < f6/f < 3.0, where f6 is an effective focal length of the sixth lens, and f is the effective focal length of the optical imaging lens. By controlling the ratio of the effective focal length of the sixth lens to the effective focal length of the optical imaging lens in the range, the deflection angle of light can be reduced, thereby reducing the sensitivity of the optical imaging lens. More specifically, f6 and f can satisfy 1.3 < f6/f < 2.9.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 < R1/f1 < 3.0, where R1 is a radius of curvature of an object side surface of the first lens and f1 is an effective focal length of the first lens. By controlling the ratio of the curvature radius of the object side surface of the first lens to the effective focal length of the first lens in the range, the deflection of the incident light of the system on the first lens can be effectively controlled, and the sensitivity of the system can be reduced. More specifically, R1 and f1 may satisfy 1.6 < R1/f1 < 3.0.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-3.5 < R10/R9 < -1.5, where R9 is a radius of curvature of an object-side surface of the fifth lens and R10 is a radius of curvature of an image-side surface of the fifth lens. By controlling the ratio of the curvature radius of the image side surface of the fifth lens to the curvature radius of the object side surface of the fifth lens within the range, the shape of the fifth lens can be effectively constrained. Furthermore, the aberration contribution rates of the object side surface and the image side surface of the fifth lens can be effectively controlled, so that the aberration of the system related to the aperture zone can be effectively balanced, and the imaging quality of the system can be effectively improved. More specifically, R10 and R9 may satisfy-3.4 < R10/R9 < -1.5.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 4.0 < f2/f < 10.0, where f2 is an effective focal length of the second lens, and f is the effective focal length of the optical imaging lens. By controlling the ratio of the effective focal length of the second lens to the effective focal length of the optical imaging lens in the range, the size of the optical imaging lens can be reasonably controlled while the optical imaging lens is ensured to have higher aberration correction capability. In addition, the excessive concentration of the focal power of the optical imaging lens can be avoided, and the aberration of the optical imaging lens can be better corrected by matching the second lens with other lenses. More specifically, f2 and f can satisfy 4.2 < f2/f < 9.7.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5 < R7/R6 < -0.5, where R6 is a radius of curvature of an image-side surface of the third lens and R7 is a radius of curvature of an object-side surface of the fourth lens. By controlling the ratio of the curvature radius of the object side surface of the fourth lens to the curvature radius of the image side surface of the third lens within the range, the total deflection angle of the marginal field of view on the two surfaces can be controlled within a reasonable range, so that the sensitivity of the system can be effectively reduced. More specifically, R7 and R6 may satisfy-2.5 < R7/R6 < -0.9.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < CT1/T12 < 2.5, where CT1 is a central thickness of the first lens on an optical axis and T12 is a separation distance of the first lens and the second lens on the optical axis. By controlling the ratio of the central thickness of the first lens on the optical axis to the air space of the first lens and the second lens on the optical axis within the range, the size distribution of the lens can be facilitated to be uniform, and the assembly stability is ensured. In addition, the optical imaging lens is beneficial to reducing the aberration of the whole optical imaging lens and shortening the total length of the optical imaging lens. More specifically, CT1 and T12 may satisfy 1.0 < CT1/T12 < 2.2.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < (R4+ R8)/R5 < 2.5, where R4 is a radius of curvature of an image-side surface of the second lens, R5 is a radius of curvature of an object-side surface of the third lens, and R8 is a radius of curvature of an image-side surface of the fourth lens. According to the condition, the chromatic aberration of the optical imaging lens can be effectively corrected, and simultaneously, the balance of all the chromatic aberrations can be realized. More specifically, R4, R8 and R5 may satisfy 1.1 < (R4+ R8)/R5 < 2.2.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < CT2/CT3 < 2.5, where CT2 is a central thickness of the second lens on an optical axis and CT3 is a central thickness of the third lens on the optical axis. The ratio of the central thicknesses of the second lens and the third lens is reasonably controlled, so that the distortion of each field of view of the system can be controlled in a reasonable range, and the imaging quality is improved. More specifically, CT2 and CT3 may satisfy 1.1 < CT2/CT3 < 2.1.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < CT6/CT4 < 3.0, where CT4 is a central thickness of the fourth lens on the optical axis and CT6 is a central thickness of the sixth lens on the optical axis. The ratio of the central thicknesses of the fourth lens and the sixth lens is reasonably controlled, so that the distortion of each field of view of the system can be controlled within a reasonable range, and the imaging quality is improved.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < R2/f < 2.0, where R2 is a radius of curvature of an image side surface of the first lens, and f is an effective focal length of the optical imaging lens. The ratio of the effective focal length of the optical imaging lens to the curvature radius of the image side surface of the first lens is reasonably controlled, so that the object side end of the lens has enough convergence capacity to adjust the focusing position of the light beam, and further the total length of the optical imaging lens is shortened.

In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The stop may be provided at an appropriate position as required, for example, between the third lens and the fourth 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.

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 lens has a large field angle, improves the distortion and the vertical axis chromatic aberration, effectively improves the imaging quality, has high image quality, can obtain more object information during shooting, and has more infectivity on the shot picture. In addition, the optical imaging lens can avoid the overlong total optical length of the system, and is favorable for applying the lens to portable electronic products.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror, 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. 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 lens center to the lens periphery, an aspherical lens has a better curvature radius characteristic, and has an advantage of improving distortion aberration, that is, astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. 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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex 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 basic parameters of the optical imaging lens of embodiment 1, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm).

TABLE 1

In embodiment 1, the total effective focal length f of the optical imaging lens is 1.00mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.39mm, and the half Semi-FOV of the maximum angle of view is 70.6 °.

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. Table 2 and Table 3 below show the coefficients A of the high-order terms that can be used for the aspherical mirror surfaces S1 to S12 in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈、A₂₀、A₂₂、A₂₄、A₂₆、A₂₈And A₃₀。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.4673E+00

-1.8810E-01

8.0784E-02

-2.5807E-02

1.0891E-02

-4.1815E-03

1.8389E-03

S2

1.2759E-01

-1.2929E-02

1.3064E-02

5.4115E-03

2.1311E-03

1.0000E-03

2.2041E-04

S3

-1.4364E-01

4.2847E-03

2.2977E-03

-1.0614E-03

-3.7632E-04

-9.2284E-05

-8.2171E-05

S4

7.6430E-02

5.0096E-04

-1.0937E-04

-1.9806E-04

2.1934E-04

-2.1840E-05

-1.3114E-04

S5

6.1752E-02

-1.2256E-02

-5.4271E-04

6.1819E-04

7.6349E-04

1.9928E-04

-3.3274E-05

S6

3.3445E-03

-6.5195E-03

1.0767E-03

2.4308E-04

1.4246E-04

-7.4695E-05

-3.4902E-05

S7

-1.6477E-02

-3.2996E-03

2.0792E-03

1.3859E-03

-2.6430E-05

-4.9225E-04

-1.7896E-04

S8

-2.6513E-02

-6.1707E-04

-8.6694E-04

1.3529E-03

4.1333E-04

-2.3444E-04

-3.0725E-04

S9

-6.5244E-02

8.9837E-03

-5.8000E-03

8.0330E-04

-1.9833E-05

7.1252E-05

-1.0640E-05

S10

-2.5947E-02

3.2811E-02

-1.4810E-02

4.8822E-03

-8.2260E-04

1.2923E-04

-1.1642E-04

S11

-1.1347E+00

1.6317E-01

-4.1416E-02

1.3877E-02

-5.3840E-03

1.1124E-03

-7.0871E-04

S12

-1.7256E-01

-9.0334E-02

1.9557E-02

-8.0032E-03

1.5960E-03

-1.7300E-03

-2.0820E-04

TABLE 2

TABLE 3

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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex 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 2, the total effective focal length f of the optical imaging lens is 0.78mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.01mm, and the half Semi-FOV of the maximum angle of view is 67.0 °.

Table 4 shows basic parameters of the optical imaging lens of embodiment 2, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 5 and 6 show the 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 4

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.1123E+00

-1.9209E-01

7.2094E-02

-2.6601E-02

1.0314E-02

-4.0449E-03

1.6670E-03

S2

4.7586E-02

-8.8487E-03

8.6251E-03

5.4892E-03

2.3893E-03

1.6087E-03

3.7668E-04

S3

-1.0375E-01

-3.6441E-03

1.8610E-03

1.8740E-05

-6.8616E-04

-9.4905E-05

8.2221E-06

S4

1.1164E-01

-3.3254E-03

9.0066E-04

-2.0358E-04

-1.4948E-04

-3.9912E-05

-1.0093E-04

S5

6.7545E-02

-1.5670E-02

-6.2996E-04

3.1945E-04

7.5251E-04

3.6628E-04

1.0163E-04

S6

-2.0196E-03

-1.0584E-02

9.2259E-04

5.9034E-04

4.4305E-04

1.5447E-04

2.6786E-05

S7

-2.4689E-02

-3.3320E-03

4.2268E-03

9.3922E-04

-4.5423E-04

-3.2496E-04

-5.8424E-05

S8

-4.1600E-02

-9.0016E-03

3.5500E-04

1.9159E-03

3.5741E-04

1.0909E-05

-1.1580E-04

S9

-1.1175E-01

1.6851E-02

-1.3254E-02

3.1841E-03

-1.1057E-03

3.3996E-04

-1.0360E-04

S10

-3.0029E-01

9.1906E-02

-2.7396E-02

7.7502E-03

-2.3928E-03

1.1002E-03

-3.8293E-04

S11

-1.1035E+00

1.4118E-01

-5.1049E-02

1.8520E-02

-9.9314E-03

4.0611E-03

-2.4010E-03

S12

1.6379E+00

-5.9603E-01

1.7562E-01

-7.7277E-02

1.9501E-02

-6.8885E-03

-5.0997E-04

TABLE 5

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-7.0968E-04

3.1160E-04

-1.3471E-04

5.4875E-05

-1.9876E-05

5.0819E-06

-5.9633E-07

S2

1.9835E-04

-1.1135E-04

-1.0018E-04

-1.1350E-04

-7.2814E-05

-4.5089E-05

-1.4717E-05

S3

5.6302E-06

1.7914E-05

1.1110E-05

1.6533E-05

3.6911E-06

6.0680E-06

1.0855E-06

S4

-3.0077E-05

1.4182E-05

3.5249E-05

2.3088E-05

1.1347E-05

1.8041E-06

2.8533E-07

S5

1.3327E-05

-1.0656E-05

-2.6041E-05

-3.2889E-05

-3.2643E-05

-1.8617E-05

-6.7967E-06

S6

-1.8228E-05

5.5949E-06

2.5316E-06

-1.5778E-05

-1.3557E-05

-1.0016E-06

3.1421E-06

S7

1.1468E-05

6.3116E-05

1.0878E-04

9.7391E-05

5.3619E-05

1.9970E-05

4.6668E-06

S8

-9.9718E-06

-3.8489E-05

-7.6622E-05

-8.5223E-05

-5.1654E-05

-2.1929E-05

-4.2039E-06

S9

7.7317E-05

-4.2163E-05

-3.3603E-05

-4.7901E-05

6.6373E-06

1.5890E-05

1.5829E-05

S10

2.0062E-04

-9.6688E-05

2.9107E-05

-1.7642E-05

4.1979E-07

-1.5595E-06

-2.4819E-06

S11

1.1040E-03

-7.1282E-04

2.6157E-04

-1.6888E-04

4.5000E-05

-6.2498E-05

7.3131E-05

S12

1.2956E-03

-1.2219E-03

1.1591E-03

-2.9785E-04

1.9383E-04

9.9242E-05

-2.5083E-04

TABLE 6

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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex 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 3, the total effective focal length f of the optical imaging lens is 0.48mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.39mm, and the half Semi-FOV of the maximum angle of view is 76.1 °.

Table 7 shows basic parameters of the optical imaging lens of embodiment 3, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 8 and 9 show high-order term coefficients that can be used for each aspherical mirror surface in embodiment 3, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above.

TABLE 7

TABLE 8

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.0450E-03

4.7241E-04

-2.1294E-04

9.3020E-05

-3.4490E-05

8.4127E-06

-9.1995E-07

S2

2.3128E-05

-4.2784E-04

1.1899E-04

6.5745E-06

1.2856E-04

3.2516E-05

3.2529E-05

S3

1.6715E-04

-1.4591E-04

5.3045E-05

-1.4254E-05

2.0462E-05

3.4029E-06

-1.0609E-06

S4

2.4132E-05

-1.3082E-05

7.1119E-05

-1.3814E-05

-1.1924E-05

-2.2521E-05

1.7106E-07

S5

7.2025E-05

2.2759E-05

-6.8489E-05

-7.7218E-05

-3.7290E-05

-5.3643E-06

-1.3666E-06

S6

-6.2401E-05

4.1713E-05

5.0922E-05

2.2717E-07

-2.1403E-05

-2.4808E-05

-7.0774E-06

S7

4.8306E-05

2.7686E-05

7.8973E-07

-2.5248E-05

-2.6914E-05

-1.4310E-05

-2.6617E-06

S8

3.7454E-05

-2.2060E-05

-1.9139E-05

-8.9071E-06

6.8198E-06

8.5669E-06

4.1263E-06

S9

-1.2181E-05

2.9798E-05

-5.6956E-06

1.4510E-05

1.1123E-06

4.0520E-06

-1.2493E-06

S10

-5.6509E-05

1.2635E-04

-6.7496E-05

3.2757E-05

-2.7250E-05

6.6997E-06

-8.8769E-06

S11

-1.7035E-03

1.0111E-03

-6.3261E-04

3.1531E-04

-2.0515E-04

7.6140E-05

-3.7455E-05

S12

-2.3454E-02

2.1769E-02

-1.5052E-02

6.9989E-03

-4.8692E-03

1.7524E-03

-6.9109E-04

TABLE 9

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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex 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 4, the total effective focal length f of the optical imaging lens is 1.09mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.39mm, and the half Semi-FOV of the maximum angle of view is 71.8 °.

Table 10 shows basic parameters of the optical imaging lens of embodiment 4, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 11 and 12 show the 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 the formula (1) given in example 1 above.

Watch 10

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.3265E+00

-2.2456E-01

6.9073E-02

-2.4460E-02

9.4647E-03

-3.8519E-03

1.6398E-03

S2

4.7617E-02

-9.4156E-05

8.9606E-03

3.6103E-03

1.1258E-03

4.8290E-04

-1.7116E-05

S3

-1.4862E-01

-8.7479E-04

2.7879E-03

-1.8053E-04

-1.4153E-04

-7.4893E-06

-2.9537E-05

S4

9.4715E-02

-2.2089E-03

8.9115E-04

-1.8734E-04

-7.9167E-05

-1.0359E-04

-5.6730E-05

S5

6.5963E-02

-1.2417E-02

-2.6112E-04

-1.4270E-04

1.3385E-04

1.1574E-04

1.0462E-04

S6

-6.7259E-03

-6.2239E-03

-2.3273E-04

2.8936E-04

3.9529E-04

2.3066E-04

1.3731E-04

S7

-1.9495E-02

-2.0681E-03

7.7164E-04

1.1839E-03

6.1474E-04

-2.8944E-05

-2.6487E-04

S8

-2.7632E-02

-9.1152E-04

-1.6538E-03

1.3529E-03

9.5236E-04

2.2982E-04

-1.8421E-04

S9

-4.1288E-02

5.4020E-03

-6.2824E-03

1.2748E-03

9.0091E-06

1.8657E-04

-2.4047E-05

S10

2.1216E-03

2.1460E-02

-1.1089E-02

3.4081E-03

-5.6214E-04

1.9739E-04

6.2323E-06

S11

-1.0707E+00

1.6614E-01

-4.5691E-02

1.2259E-02

-3.8593E-03

1.1635E-03

-3.3716E-04

S12

-4.4843E-01

-4.6524E-02

6.5767E-03

-1.1392E-02

3.1002E-03

-3.5017E-03

1.0624E-03

TABLE 11

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-7.1430E-04

3.0812E-04

-1.2997E-04

5.4491E-05

-1.9974E-05

4.7852E-06

-5.0404E-07

S2

1.3399E-05

-9.1253E-05

-9.5945E-06

-4.1396E-05

8.9919E-06

-1.2062E-05

5.2141E-06

S3

-2.7791E-05

-1.9644E-05

-7.5999E-06

-4.3131E-06

1.5450E-07

1.8517E-07

1.0720E-06

S4

-1.9135E-05

1.6723E-05

2.0762E-05

1.5114E-05

6.0172E-06

2.6042E-06

3.7028E-08

S5

9.3424E-05

7.8749E-05

5.9578E-05

3.4936E-05

1.9591E-05

7.8084E-06

3.1578E-06

S6

5.0838E-05

9.8840E-06

-1.1938E-05

-1.3193E-05

-1.2525E-05

-6.1802E-06

-2.8838E-06

S7

-2.0197E-04

-5.9189E-05

2.5511E-05

4.3091E-05

2.8198E-05

1.1949E-05

3.3167E-06

S8

-1.9515E-04

-5.0971E-05

6.0006E-05

8.2459E-05

5.2549E-05

2.1235E-05

3.6648E-06

S9

-4.0735E-05

-6.6101E-05

-2.4424E-05

-9.7023E-06

8.6998E-06

5.6257E-06

3.9410E-06

S10

3.3689E-05

2.4124E-06

-8.1148E-06

-4.3386E-06

-9.9319E-06

-1.8299E-06

-3.0690E-06

S11

7.2093E-05

-1.0505E-04

-1.9386E-05

-1.1292E-04

1.8459E-05

-2.0166E-05

1.7950E-05

S12

-1.1757E-03

-6.2854E-05

-5.1072E-04

-3.6255E-04

-2.4865E-04

-1.6289E-04

-4.7224E-05

TABLE 12

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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex 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 5, the total effective focal length f of the optical imaging lens is 0.58mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.39mm, and the half Semi-FOV of the maximum angle of view is 71.7 °.

Table 13 shows basic parameters of the optical imaging lens of embodiment 5, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 14 and 15 show the 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 the formula (1) given in example 1 above.

Watch 13

TABLE 14

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-7.2417E-04

3.0723E-04

-1.2918E-04

5.5049E-05

-1.9978E-05

4.6313E-06

-4.7182E-07

S2

1.9079E-04

6.0850E-05

-4.6709E-05

-3.1140E-05

-3.1723E-05

-1.5991E-05

-7.0940E-06

S3

1.2421E-05

-2.4542E-05

-9.2008E-06

-4.0212E-06

-7.6127E-06

1.8773E-06

-3.6609E-06

S4

4.3382E-05

1.1567E-06

1.0942E-05

2.9134E-06

4.7529E-06

2.8910E-06

3.8774E-06

S5

1.0721E-04

8.3170E-05

5.4448E-05

2.5129E-05

1.4554E-05

6.5328E-06

-8.0473E-08

S6

3.4347E-05

6.1961E-06

-1.2009E-05

-5.7250E-05

-6.4287E-05

-3.2500E-05

-1.0590E-05

S7

-1.8402E-04

6.3975E-06

5.8685E-05

5.4186E-05

2.8948E-05

8.4179E-06

3.1740E-07

S8

-1.8059E-04

-3.9581E-05

4.5565E-05

4.2185E-05

1.5832E-05

9.1177E-07

-1.5406E-06

S9

-7.2833E-05

-3.7113E-05

-3.3687E-05

1.4085E-05

6.7550E-06

6.1786E-06

-1.9562E-07

S10

-3.2992E-05

6.5315E-05

-5.9193E-05

1.2129E-05

-1.8319E-05

-9.8512E-07

-2.4057E-06

S11

-1.6724E-03

2.8182E-04

-8.2576E-04

-2.8108E-04

2.4924E-04

1.7843E-04

3.8981E-04

S12

-6.5133E-03

4.8530E-03

4.2690E-04

-7.3058E-05

3.8157E-04

-1.1357E-03

-2.7978E-04

Watch 15

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 second lens E2, a third lens E3, a stop STO, 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 positive power, and has a concave object-side surface S5 and a convex 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 positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The filter E7 sheet 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 total effective focal length f of the optical imaging lens is 0.95mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 is 2.39mm, and the half Semi-FOV of the maximum angle of view is 80.1 °.

Table 16 shows basic parameters of the optical imaging lens of example 6, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 17 and 18 show the 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 the formula (1) given in example 1 above.

TABLE 16

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.4173E+00

-1.9520E-01

7.2476E-02

-2.7163E-02

1.1649E-02

-4.9973E-03

2.2069E-03

S2

-5.5122E-02

-1.2116E-02

2.9515E-03

2.4308E-03

9.0649E-04

9.1733E-04

3.3019E-04

S3

-1.0928E-01

1.8712E-03

9.5638E-04

7.9554E-05

-5.6292E-05

1.0285E-05

-7.8706E-06

S4

6.2855E-02

-2.6002E-04

4.9143E-04

-5.7796E-05

-3.8657E-05

9.4112E-07

1.9196E-05

S5

5.0459E-02

-7.4844E-03

-1.1755E-04

-2.4458E-04

-2.4851E-05

4.2192E-05

3.7141E-05

S6

3.1950E-03

-2.4209E-03

1.5634E-04

-6.2080E-05

3.7723E-05

9.4073E-06

1.0913E-05

S7

-7.1144E-03

-3.0254E-03

-5.3862E-04

-1.8046E-04

-2.5223E-05

-2.8001E-06

-1.7894E-06

S8

-1.8417E-02

-1.1724E-03

-1.7435E-03

-2.0680E-04

-6.6222E-05

4.5966E-06

5.9372E-06

S9

-6.1829E-02

9.7457E-03

-4.2326E-03

5.2863E-04

-1.3444E-04

2.6626E-05

-1.0193E-05

S10

-6.9871E-02

3.0593E-02

-9.6986E-03

2.2000E-03

-4.5570E-04

1.2294E-04

-4.3519E-05

S11

-9.2809E-01

1.7671E-01

-4.1497E-02

1.0935E-02

-4.9099E-03

4.6824E-04

-5.1704E-04

S12

2.4007E-01

-1.8611E-01

7.2323E-02

-2.7296E-02

2.8404E-03

-8.9865E-03

7.5188E-04

TABLE 17

Watch 18

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.

Further, in embodiments 1 to 6, the focal length values f1 to f6 of the respective lenses, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface, and the f-number Fno of the optical imaging lens are as shown in table 19.

Parameter \ embodiment	1	2	3	4	5	6
							f1(mm)	-1.45	-1.44	-1.10	-1.50	-1.21	-1.40
f2(mm)	4.31	4.24	3.25	7.86	5.57	5.71
							f3(mm)	5.05	3.70	4.58	2.96	3.04	3.62
f4(mm)	1.52	1.67	1.56	1.66	1.41	1.51
							f5(mm)	-1.62	-0.99	-1.11	-1.60	-1.18	-1.38
f6(mm)	2.56	1.02	0.67	3.06	0.76	2.15
							TTL(mm)	5.50	5.50	6.00	6.00	6.00	5.80

Table 19 in examples 1 to 6, each conditional expression satisfies the relationship shown in table 20.

Conditional expression (A) example	1	2	3	4	5	6
							FOV(°)	141.3	134.0	152.3	143.6	143.4	160.2
TTL/ImgH	2.30	2.74	2.51	2.51	2.51	2.43
							f/EPD	2.04	1.83	2.06	2.03	2.03	2.23
f3/f4	3.32	2.21	2.94	1.78	2.16	2.39
							f5/f	-1.61	-1.28	-2.32	-1.47	-2.05	-1.44
f6/f	2.55	1.31	1.39	2.82	1.32	2.26
							R1/f1	1.68	2.24	2.37	1.88	2.98	2.41
R2/f	1.28	1.44	1.89	1.22	1.56	1.11
							R10/R9	-1.67	-1.59	-1.69	-3.30	-3.20	-2.05
f2/f	4.29	5.46	6.80	7.23	9.67	5.99
							R7/R6	-1.09	-2.41	-1.24	-1.14	-0.99	-1.13
CT1/T12	1.10	1.16	2.17	2.16	1.84	1.03
							(R4+R8)/R5	2.10	1.42	1.99	2.12	1.12	1.69
CT2/CT3	1.20	1.38	1.15	1.39	2.04	1.62
							CT6/CT4	1.23	1.16	2.97	1.05	1.99	1.43

Watch 20

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 (10)

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

a first lens having a negative optical power;

a second lens with focal power, wherein 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;

a third lens having a positive optical power;

a fourth lens having an optical power;

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

a sixth lens having an optical power,

wherein the maximum field angle FOV of the optical imaging lens satisfies: the FOV is greater than or equal to 130 degrees.

2. The optical imaging lens of claim 1, wherein the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy:

1.5＜f3/f4＜3.5。

3. the optical imaging lens of claim 1, wherein the effective focal length f5 of the fifth lens and the effective focal length f of the optical imaging lens satisfy:

-2.5＜f5/f＜-1.0。

4. the optical imaging lens of claim 1, wherein the effective focal length f6 of the sixth lens and the effective focal length f of the optical imaging lens satisfy:

1.0＜f6/f＜3.0。

5. the optical imaging lens of claim 1, wherein the radius of curvature R1 of the object side surface of the first lens and the effective focal length f1 of the first lens satisfy:

1.5＜R1/f1＜3.0。

6. the optical imaging lens of claim 1, wherein the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy:

-3.5＜R10/R9＜-1.5。

7. the optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the effective focal length f of the optical imaging lens satisfy:

4.0＜f2/f＜10.0。

8. the optical imaging lens of any one of claims 1 to 7, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy:

2.0＜TTL/ImgH＜3.0。

9. the optical imaging lens of any one of claims 1 to 7, wherein the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:

1.5＜f/EPD＜2.5。

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

a first lens having a negative optical power;

a second lens having a positive optical power;

a third lens having a positive optical power;

a fourth lens having a positive optical power;

a fifth lens having a negative optical power; and

a sixth lens having a positive optical power,

wherein the maximum field angle FOV of the optical imaging lens satisfies: the FOV is greater than or equal to 130 degrees.

Images