CN210136354U

CN210136354U - Optical imaging lens

Info

Publication number: CN210136354U
Application number: CN201921090510.7U
Authority: CN
Inventors: 计云兵; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-03-10
Anticipated expiration: 2029-07-12

Abstract

The present application provides an optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising: the included angle between the reflecting surface of the prism and the optical axis is 45 degrees; a diaphragm; a first lens having a positive refractive power, an object-side surface of which is convex; a second lens having an optical power; a third lens with negative focal power, the image side surface of which is concave; a fourth lens having an optical power; a fifth lens with focal power, wherein the image side surface of the fifth lens is convex; a sixth lens element having a negative refractive power, the object-side surface of which is convex; an on-axis distance PL from an image side surface of the prism to an object side surface of the first lens satisfies 0.30mm < PL < 1.00 mm.

Description

Optical imaging lens

Technical Field

The present invention relates to an optical imaging lens, and particularly to an optical imaging lens including a prism and six lenses having optical powers.

Background

The imaging function of portable electronic devices is increasingly required, and the size of the optical imaging lens disposed thereon is limited due to the desire for smaller size of portable electronic devices.

Electronic devices such as mobile phones have a small installation space allocated to a lens due to limitations in installation size, so that the size of the lens to be equipped is small, and further, optical characteristics of the lens are limited. Therefore, how to realize a telephoto lens having good optical characteristics and capable of meeting the miniaturization requirement is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

The present application provides an optical imaging lens apparatus, for example, an optical imaging lens including a prism, which can solve at least or partially at least one of the above-described drawbacks of the related art. This application is through increasing the light transmission route that reflection prism comes the deflection lens group for light is longitudinal propagation completely no longer. The arrangement can convert the volume of the module originally stacked on the longitudinal axis into the transverse direction, so that the long focal length can be realized under the condition of meeting the light and thin characteristics of the mobile phone.

The present application provides an optical imaging lens, which sequentially comprises, from an object side to an image side along an optical axis: the included angle between the reflecting surface of the prism and the optical axis is 45 degrees; a diaphragm; a first lens having a positive refractive power, an object-side surface of which is convex; a second lens having an optical power; a third lens with negative focal power, the image side surface of which is concave; a fourth lens having an optical power; a fifth lens with focal power, wherein the image side surface of the fifth lens is convex; and the object side surface of the sixth lens with negative focal power is a convex surface.

According to an embodiment of the present application, an on-axis distance PL from an image-side surface of the prism to an object-side surface of the first lens satisfies 0.30mm < PL < 1.00 mm.

According to the embodiment of the application, the on-axis distance TTL from the reflecting surface of the prism to the imaging surface of the optical imaging lens and the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH > 6.00.

According to the embodiment of the application, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy 3.00 < | f/f1| - | f/f3| < 5.00.

According to the embodiment of the present application, an on-axis distance PL from the image-side surface of the prism to the object-side surface of the first lens and a half ImgH of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens satisfy 10.00 < 100 × PL/ImgH < 25.00.

According to the embodiment of the present application, a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of the image-side surface of the fifth lens satisfy 0.50 < R9/R10 < 2.00.

According to the embodiment of the present application, a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a separation distance T12 of the first lens and the second lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 5.00 < (CT1+ CT2)/(T12-T23) < 7.00.

According to the embodiment of the present application, an on-axis distance SAG41 from an intersection point of an object-side surface and an optical axis of the fourth lens to a vertex of an effective radius of the object-side surface of the fourth lens and an on-axis distance SAG42 from an intersection point of an image-side surface and the optical axis of the fourth lens to a vertex of an effective radius of the image-side surface of the fourth lens satisfy 1.00 < SAG41/SAG42 < 3.50.

According to the embodiment of the application, the spacing distance T45 between the fourth lens and the fifth lens on the optical axis and the on-axis distance TTL between the reflection surface of the prism and the imaging surface of the optical imaging lens satisfy 1.00 & lt 10 XT 45/TTL & lt 2.50.

According to the embodiment of the application, the effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens meet 3.00 < f/R10 < 5.00.

According to the embodiment of the present application, the central thickness CT3 of the third lens on the optical axis and the separation distance T34 of the third lens and the fourth lens on the optical axis satisfy 0.50 < CT3/T34 < 2.00.

The application provides an optical imaging lens including prism and multi-disc (for example, six) lens, through setting up the prism for become 90 degrees contained angles between the incident direction of light and the array direction of multi-disc lens, thereby make optical imaging lens reduce in the size of light incident direction. Meanwhile, the optical imaging lens group has the beneficial effects of miniaturization, high imaging quality and long focal length by reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like.

Drawings

The above and other advantages of embodiments of the present application will become apparent from the detailed description with reference to the following drawings, which are intended to illustrate and not to limit exemplary embodiments of the present application. In the drawings:

fig. 1 shows a schematic structural diagram of an optical imaging lens according to a first embodiment of the present application;

fig. 2A to 2D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present application;

fig. 4A to 4D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to a second embodiment of the present application;

fig. 5 is a schematic structural diagram of an optical imaging lens according to a third embodiment of the present application;

fig. 6A to 6D sequentially show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to a third embodiment of the present application;

fig. 7 is a schematic structural view of an optical imaging lens according to a fourth embodiment of the present application;

fig. 8A to 8D sequentially show an axial chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to the fourth embodiment of the present application;

fig. 9 is a schematic structural view of an optical imaging lens according to a fifth embodiment of the present application; and

fig. 10A to 10D sequentially show an axial chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve according to example five of the present application.

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. Accordingly, the first lens of the optical imaging 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 each lens, the surface closest to the subject is referred to as the object side of the lens; in each lens, the surface closest to the imaging 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.

An optical imaging lens according to an exemplary embodiment of the present application may include: prism, diaphragm, first lens, second lens, third lens, fourth lens, fifth lens and sixth lens, wherein the prism is arranged so that the included angle between its reflecting surface and the optical axis is 45 °. The six lenses are arranged in sequence from the image side surface to the image side surface of the prism along the optical axis, and air spaces can be formed between every two adjacent lenses and between the prism and the first lens.

The prism may be a triangular prism having an entrance face, a reflection face, and an exit face, wherein the entrance face and the exit face are perpendicular. The light ray incident perpendicular to the incident plane is reflected by the reflecting plane, the direction of the light ray is changed by 90 degrees, and the light ray is emitted perpendicular to the emergent plane. The prism enables the direction of incident light of the optical imaging lens to be perpendicular to the arrangement direction of the lenses, so that the length space of the mobile phone is used for matching the arrangement length of the lenses, and the limitation of the thickness of the mobile phone body on the focal length of the lenses is avoided.

In an exemplary embodiment, the first lens may have a positive optical power, with the object side surface being convex; the second lens has positive focal power or negative focal power; the third lens has negative focal power, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the object side surface of the sixth lens is a convex surface. Through the reasonable configuration of the focal power of the lens and the reasonable arrangement of the surface type of the lens, the off-axis aberration of the optical imaging lens is favorably corrected, and the imaging quality is improved.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 0.30mm < PL < 1.00mm, where PL is an on-axis distance from an image-side surface of the prism to an object-side surface of the first lens. In an exemplary embodiment, PL may satisfy 0.50mm < PL < 0.95 mm. The image side of control prism is to the epaxial distance of the object side of first lens, can control the degree of divergence of prism department light beam, makes the reasonable shaping of light beam, avoids the light beam to diverge the volume that leads to the prism and sets up too big, still can prevent the equipment inconvenience that the space is not enough to lead to between prism and the first lens, has reduced optical imaging lens's equipment degree of difficulty.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression TTL/ImgH > 6.00, where TTL is an on-axis distance from a reflection surface of a prism to an imaging surface of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. In an exemplary embodiment, TTL and ImgH can satisfy TTL/ImgH > 6.30. The angle of view of the optical imaging lens can be controlled by controlling the ratio of the on-axis distance from the reflecting surface of the prism to the imaging surface of the optical imaging lens to the image height, the refraction degree of the light at the first lens is mild, and then the optical imaging lens has the characteristics of small imaging aberration and high imaging image quality.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 3.00 < | f/f1| - | f/f3| < 5.00, where f is an effective focal length of the optical imaging lens, f1 is an effective focal length of the first lens, and f3 is an effective focal length of the third lens. In an exemplary embodiment, f1, and f3 may satisfy 3.25 < | f/f1| - | f/f3| < 4.75. By distributing the effective focal lengths of the first lens and the third lens, the optical imaging lens can better balance aberration.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 10.00 < 100 × PL/ImgH < 25.00, where PL is an on-axis distance from an image side surface of the prism to an object side surface of the first lens, and ImgH is a half of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens. In an exemplary embodiment, PL and ImgH may satisfy 13.00 < 100 XPL/ImgH < 22.00. The ratio of the distance between the image side surface of the prism and the object side surface of the first lens on the axis to the image height is controlled, the divergence angle of the light beam at the prism can be controlled, the assembly difficulty of the prism and the lens can be reduced, and the optical imaging lens has higher imaging quality.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 0.50 < R9/R10 < 2.00, 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. In exemplary embodiments, R9 and R10 may satisfy 0.80 < R9/R10 < 1.90. The curvature radiuses of the two mirror surfaces of the object side surface and the image side surface of the fifth lens are controlled, so that the fifth lens has a low bending amount and is easy to process. Meanwhile, the optical imaging lens has better capability of balancing chromatic aberration and distortion.

In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 5.00 < (CT1+ CT2)/(T12-T23) < 7.00, where CT1 is a central thickness of the first lens on the optical axis, CT2 is a central thickness of the second lens on the optical axis, T12 is a spaced distance of the first lens and the second lens on the optical axis, and T23 is a spaced distance of the second lens and the third lens on the optical axis. The central thickness of the first lens and the second lens on the optical axis and the thickness of the air intervals on the optical axis at two sides of the second lens are controlled, so that the size of the optical imaging lens can be effectively reduced, the higher space utilization rate is realized, and in addition, the assembling difficulty of the lenses can be reduced.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 1.00 < SAG41/SAG42 < 3.50, where SAG41 is an on-axis distance from an intersection of an object-side surface of the fourth lens and an optical axis to an effective radius vertex of the object-side surface of the fourth lens, and SAG42 is an on-axis distance from an intersection of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens. In exemplary embodiments, SAG41 and SAG42 may satisfy 1.40 < SAG41/SAG42 < 3.40. By controlling the rise of two mirror surfaces of the fourth lens, the fourth lens has a lower bending degree, the fourth lens is easy to process, and the optical imaging lens has higher assembly stability.

In an exemplary embodiment, the optical imaging lens provided by the present application may satisfy the conditional expression 1.00 < 10 × T45/TTL < 2.50, where T45 is a separation distance of the fourth lens and the fifth lens on the optical axis, and TTL is an on-axis distance from the reflection surface of the prism to the imaging surface of the optical imaging lens. In an exemplary embodiment, T45 and TTL can satisfy 1.50 < 10 XT 45/TTL < 2.20. The optical imaging lens has better assembly performance by distributing the spacing distance of the lenses of the optical imaging lens on the optical axis, and the interference between the adjacent lenses can be prevented in the assembly process; in addition, the light segregation in the light path of the optical imaging lens is favorably slowed down, the field curvature of the optical imaging lens can be adjusted, the sensitivity of the optical imaging lens is reduced, and the imaging quality of the optical imaging lens is improved.

In an exemplary embodiment, the optical imaging lens provided by the application can satisfy the conditional expression 3.00 < f/R10 < 5.00, wherein f is an effective focal length of the optical imaging lens, and R10 is a curvature radius R10 of an image side surface of the fifth lens. In an exemplary embodiment, f and R10 may satisfy 3.50 < f/R10 < 4.50. The ratio of the effective focal length of the optical imaging lens to the curvature radius of the image side surface of the fifth lens is controlled, so that the fifth lens is distributed with reasonable focal power, the situation that the light integrity degree of the fifth lens is large is prevented, and the optical imaging lens can better balance aberration.

In an exemplary embodiment, the optical imaging lens provided herein may satisfy the conditional expression 0.50 < CT3/T34 < 2.00, where a center thickness CT3 of the third lens on the optical axis is satisfied with a separation distance T34 of the third lens and the fourth lens on the optical axis. In exemplary embodiments, CT3 and T34 may satisfy 0.80 < CT3/T34 < 1.80. The ratio of the center thickness of the third lens on the optical axis to the distance between the third lens and the fourth lens on the optical axis is controlled, the size of the optical imaging lens can be reduced, the space utilization rate of the optical imaging lens is improved, the assembly difficulty is reduced, light deflection can be relieved, the field curvature of the optical imaging lens is adjusted, the sensitivity of the optical imaging lens is reduced, and the imaging quality of the optical imaging lens is good.

In an exemplary embodiment, the optical imaging lens may further include a diaphragm disposed between the prism and the first lens. In an exemplary embodiment, the diaphragm is disposed between two adjacent lenses. The diaphragm is used to confine the light beam and control the cross-sectional area of the light beam at its location.

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 at 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 volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the machinability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products.

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

Alternatively, at least one of 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 may be an aspherical surface. For example, the object-side surface and the image-side surface of the first lens element are aspheric, and the object-side surface of the second lens element is aspheric; for example, the image-side surface of the first lens element is aspheric, the object-side surface of the second lens element is aspheric, and the image-side surface of the third lens element and the object-side surface of the fourth lens element are aspheric; for example, the image-side surface of the first lens element and the image-side surface of the third lens element are aspheric, and the object-side surface and the image-side surface of the fifth lens element are aspheric. For example, the image-side surface of the fifth lens element and the object-side surface of the sixth lens element are aspheric. Optionally, 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 may be aspheric.

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

Example one

Referring to fig. 1 to fig. 2D, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: a prism E1, a first lens E2, a second lens E3, a third lens E4, a fourth lens E5, a fifth lens E6, a sixth lens E7, and a filter E8, and a stop STO may be provided between the prism E1 and the first lens E2. Any two adjacent lenses may have an air space between them.

The reflecting surface of the prism E1 forms an included angle of 45 degrees with the optical axis, so that the light ray incident on the object side surface S1 vertical to the prism E1 is deflected by 90 degrees and then passes out of the prism E1. The first lens element E2 has positive power, and has a convex object-side surface S4 and a concave image-side surface S5. The second lens element E3 has negative power, and has a convex object-side surface S6 and a concave image-side surface S7. The third lens element E4 has negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fourth lens element E5 has positive power, and has a convex object-side surface S10 and a concave image-side surface S11. The fifth lens element E6 has positive power, and has a concave object-side surface S12 and a convex image-side surface S13. The sixth lens element E7 has negative power, and has a convex object-side surface S14 and a concave image-side surface S15. Filter E8 has an object side S16 and an image side S17. The optical imaging lens of the present embodiment has an imaging surface S18. Light from the object sequentially passes through the surfaces (S1 to S17) and is imaged on the imaging surface S18.

Table 1 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), specifically as follows:

TABLE 1

Wherein, TTL is an on-axis distance from the reflecting surface S2 of the prism E1 to the imaging surface of the optical imaging lens, ImgH is a half of a length of a diagonal line of an effective pixel area on the imaging surface, Semi-FOV is a maximum half field angle of the optical imaging lens, Fno is an aperture value of the optical imaging lens, and f is an effective focal length of the optical imaging lens.

The object-side surface and the image-side surface of any one of the first lens E2 to the sixth lens E7 of the optical imaging lens are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric 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 below shows the high-order term coefficients A that can be used for the aspherical surfaces S4 to S15 according to example one₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens according to the first embodiment, which represents the deviation of the convergent focus of the light rays with different wavelengths after passing through the optical imaging lens. Fig. 2B shows a chromatic aberration of magnification curve of the optical imaging lens according to the first embodiment, which represents the deviation of different image heights of the light beam on the imaging surface after passing through the optical imaging lens. Fig. 2C shows an astigmatism curve of the optical imaging lens according to the first embodiment, which represents a meridional field curvature and a sagittal field curvature. Fig. 2D shows distortion curves of the optical imaging lens according to the first embodiment, which represent distortion magnitude values corresponding to different angles of view. As can be seen from fig. 2A to 2D, the optical imaging lens according to the first embodiment can achieve good imaging quality.

Example two

In the following description of the optical imaging lens according to the second embodiment of the present application with reference to fig. 3 to 4D, for the sake of brevity, a description of a part similar to that of the optical imaging lens of the first embodiment will be omitted.

Referring to fig. 3, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: a prism E1, a first lens E2, a second lens E3, a third lens E4, a fourth lens E5, a fifth lens E6, a sixth lens E7, and a filter E8, and a stop STO may be provided between the prism E1 and the first lens E2. Any two adjacent lenses may have an air space between them.

The reflecting surface of the prism E1 forms an included angle of 45 degrees with the optical axis, so that the light ray incident on the object side surface S1 vertical to the prism E1 is deflected by 90 degrees and then passes out of the prism E1. The first lens element E2 has positive power, and has a convex object-side surface S4 and a concave image-side surface S5. The second lens element E3 has positive power, and has a convex object-side surface S6 and a convex image-side surface S7. The third lens element E4 has negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fourth lens element E5 has negative power, and has a convex object-side surface S10 and a concave image-side surface S11. The fifth lens element E6 has negative power, and has a concave object-side surface S12 and a convex image-side surface S13. The sixth lens element E7 has negative power, and has a convex object-side surface S14 and a concave image-side surface S15. Filter E8 has an object side S16 and an image side S17. The optical imaging lens of the present embodiment has an imaging surface S18. Light from the object sequentially passes through the surfaces (S1 to S17) and is imaged on the imaging surface S18.

Table 3 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 4 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:

TABLE 3

TABLE 4

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S4

-2.9887E-04

2.2991E-06

5.2423E-06

-1.3533E-06

-9.1673E-08

4.6584E-08

-4.8400E-09

2.0656E-10

-3.1034E-12

S5

-1.9650E-04

-4.7567E-05

1.2320E-04

-5.4121E-05

1.1002E-05

-1.2323E-06

7.8376E-08

-2.6674E-09

3.8091E-11

S6

9.2418E-04

-7.4572E-04

3.4845E-04

-9.3002E-05

1.5008E-05

-1.4610E-06

8.2374E-08

-2.4256E-09

2.8239E-11

S7

-2.8054E-03

2.1765E-03

-6.9034E-04

1.7174E-04

-3.3591E-05

4.6261E-06

-3.9749E-07

1.8736E-08

-3.6657E-10

S8

-4.9133E-04

8.4896E-03

-4.5737E-03

1.3509E-03

-2.4985E-04

2.9689E-05

-2.1960E-06

9.1828E-08

-1.6560E-09

S9

2.9217E-03

1.0070E-02

-6.0110E-03

1.7685E-03

-2.9258E-04

2.6547E-05

-1.0204E-06

-1.1518E-08

1.4413E-09

S10

-7.5947E-03

7.9384E-03

-4.5623E-03

1.5355E-03

-3.1703E-04

4.0909E-05

-3.1945E-06

1.3803E-07

-2.5478E-09

S11

-7.4921E-03

3.7879E-03

-2.0621E-03

7.5267E-04

-1.7691E-04

2.6724E-05

-2.5085E-06

1.3402E-07

-3.1348E-09

S12

-6.1350E-05

-5.4452E-03

5.4316E-03

-3.4906E-03

1.3884E-03

-3.4420E-04

5.1632E-05

-4.2788E-06

1.5004E-07

S13

-3.9937E-02

3.6864E-02

-2.0033E-02

6.6659E-03

-1.3879E-03

1.7589E-04

-1.2450E-05

3.8872E-07

-1.2427E-09

S14

-7.8823E-02

5.7798E-02

-2.9970E-02

9.9306E-03

-2.0908E-03

2.7145E-04

-2.0105E-05

7.0011E-07

-5.4842E-09

S15

-3.6725E-02

1.3129E-02

-4.8617E-03

1.3244E-03

-2.4244E-04

2.8087E-05

-1.8860E-06

6.0785E-08

-4.9540E-10

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

EXAMPLE III

An optical imaging lens according to a third embodiment of the present application is described below with reference to fig. 5 to 6D.

Referring to fig. 5, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: a prism E1, a first lens E2, a second lens E3, a third lens E4, a fourth lens E5, a fifth lens E6, a sixth lens E7, and a filter E8, and a stop STO may be provided between the prism E1 and the first lens E2. Any two adjacent lenses may have an air space between them.

The reflecting surface of the prism E1 forms an included angle of 45 degrees with the optical axis, so that the light ray incident on the object side surface S1 vertical to the prism E1 is deflected by 90 degrees and then passes out of the prism E1. The first lens element E2 has positive power, and has a convex object-side surface S4 and a convex image-side surface S5. The second lens element E3 has positive power, and has a convex object-side surface S6 and a convex image-side surface S7. The third lens element E4 has negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fourth lens element E5 has negative power, and has a convex object-side surface S10 and a concave image-side surface S11. The fifth lens element E6 has negative power, and has a concave object-side surface S12 and a convex image-side surface S13. The sixth lens element E7 has negative power, and has a convex object-side surface S14 and a concave image-side surface S15. Filter E8 has an object side S16 and an image side S17. The optical imaging lens of the present embodiment has an imaging surface S18. Light from the object sequentially passes through the surfaces (S1 to S17) and is imaged on the imaging surface S18.

Table 5 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 6 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:

TABLE 5

TABLE 6

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S4

-2.6519E-04

2.9863E-05

-1.1788E-05

2.4438E-06

-3.9468E-07

4.0748E-08

-2.4885E-09

8.0657E-11

-1.0637E-12

S5

-2.8147E-04

2.1293E-04

-6.2423E-05

7.6697E-06

-3.2257E-07

-2.0041E-08

2.6788E-09

-1.0079E-10

1.2639E-12

S6

8.8533E-05

-5.2711E-05

4.2206E-05

-1.7760E-05

4.4142E-06

-6.1336E-07

4.6567E-08

-1.7932E-09

2.7227E-11

S7

-3.2197E-03

4.0859E-03

-1.9717E-03

5.6848E-04

-1.0270E-04

1.1843E-05

-8.5530E-07

3.5677E-08

-6.6206E-10

S8

8.2633E-04

8.3620E-03

-4.7692E-03

1.4332E-03

-2.6533E-04

3.1392E-05

-2.3232E-06

9.8637E-08

-1.8491E-09

S9

3.1364E-03

7.3619E-03

-3.4580E-03

5.6717E-04

5.2107E-05

-3.6222E-05

6.0668E-06

-4.6046E-07

1.3510E-08

S10

-7.2930E-03

4.3059E-03

-4.4763E-04

-7.2129E-04

4.1868E-04

-1.0813E-04

1.5214E-05

-1.1313E-06

3.4958E-08

S11

-7.0308E-03

1.8073E-03

1.9817E-04

-6.3890E-04

3.3270E-04

-8.8113E-05

1.3104E-05

-1.0418E-06

3.4625E-08

S12

1.4002E-03

-4.9697E-03

4.7220E-03

-2.9189E-03

1.0138E-03

-1.9918E-04

2.1165E-05

-1.0253E-06

1.1002E-08

S13

-3.4245E-03

7.4226E-04

3.4788E-03

-4.3045E-03

2.0364E-03

-5.0501E-04

6.9568E-05

-5.0367E-06

1.4910E-07

S14

-3.9739E-02

1.6055E-02

-2.7139E-03

-2.9595E-03

2.1402E-03

-6.3718E-04

1.0037E-04

-8.2271E-06

2.7747E-07

S15

-3.5757E-02

1.2798E-02

-5.1004E-03

1.4568E-03

-2.4765E-04

1.9357E-05

3.6075E-07

-1.6602E-07

8.0659E-09

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

Example four

An optical imaging lens according to a fourth embodiment of the present application is described below with reference to fig. 7 to 8D.

Referring to fig. 7, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: a prism E1, a first lens E2, a second lens E3, a third lens E4, a fourth lens E5, a fifth lens E6, a sixth lens E7, and a filter E8, and a stop STO may be provided between the prism E1 and the first lens E2. Any two adjacent lenses may have an air space between them.

The reflecting surface of the prism E1 forms an included angle of 45 degrees with the optical axis, so that the light ray incident perpendicular to the object side surface of the prism E1 is deflected by 90 degrees and then passes out of the prism E1. The first lens element E2 has positive power, and has a convex object-side surface S4 and a concave image-side surface S5. The second lens element E3 has positive power, and has a convex object-side surface S6 and a concave image-side surface S7. The third lens element E4 has negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fourth lens element E5 has positive power, and has a convex object-side surface S10 and a concave image-side surface S11. The fifth lens element E6 has positive power, and has a concave object-side surface S12 and a convex image-side surface S13. The sixth lens element E7 has negative power, and has a convex object-side surface S14 and a concave image-side surface S15. Filter E8 has an object side S16 and an image side S17. The optical imaging lens of the present embodiment has an imaging surface S18. Light from the object sequentially passes through the surfaces (S1 to S17) and is imaged on the imaging surface S18.

Table 7 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 8 shows high-order term coefficients of each aspheric surface that can be used in the optical imaging lens of the present embodiment, wherein each aspheric surface type can be defined by the foregoing formula (1), specifically as follows:

TABLE 7

TABLE 8

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

EXAMPLE five

An optical imaging lens according to embodiment five of the present application is described below with reference to fig. 9 to 10D.

Referring to fig. 9, the optical imaging lens of the present embodiment, in order from an object side to an image side along an optical axis, includes: a prism E1, a first lens E2, a second lens E3, a third lens E4, a fourth lens E5, a fifth lens E6, a sixth lens E7, and a filter E8, and a stop STO may be provided between the prism E1 and the first lens E2. Any two adjacent lenses may have an air space between them.

The reflecting surface of the prism E1 forms an included angle of 45 degrees with the optical axis, so that the light ray incident perpendicular to the object side surface of the prism E1 is deflected by 90 degrees and then passes out of the prism E1. The first lens element E2 has positive power, and has a convex object-side surface S4 and a concave image-side surface S5. The second lens element E3 has positive power, and has a convex object-side surface S6 and a convex image-side surface S7. The third lens element E4 has negative power, and has a concave object-side surface S8 and a concave image-side surface S9. The fourth lens element E5 has positive power, and has a convex object-side surface S10 and a concave image-side surface S11. The fifth lens element E6 has positive power, and has a concave object-side surface S12 and a convex image-side surface S13. The sixth lens element E7 has negative power, and has a convex object-side surface S14 and a concave image-side surface S15. Filter E8 has an object side S16 and an image side S17. The optical imaging lens of the present embodiment has an imaging surface S18. Light from the object sequentially passes through the surfaces (S1 to S17) and is imaged on the imaging surface S18.

Table 9 shows a basic parameter table of the optical imaging lens of the present embodiment, in which the units of the curvature radius, the thickness, and the focal length are all millimeters (mm), and table 10 shows high-order term coefficients of respective aspherical surfaces that can be used in the optical imaging lens of the present embodiment, wherein each aspherical surface type can be defined by the foregoing formula (1), specifically as follows:

TABLE 9

Watch 10

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S4

-2.3991E-04

6.9075E-07

2.3751E-06

-1.3122E-06

1.8757E-07

-1.3199E-08

4.5147E-10

-6.3399E-12

1.6909E-14

S5

-2.7883E-04

2.0533E-04

-5.4809E-05

3.9194E-06

5.8745E-07

-1.3815E-07

1.1073E-08

-4.0902E-10

5.8350E-12

S6

7.8074E-05

-9.3782E-06

6.0717E-06

-2.3865E-06

6.4692E-07

-6.2479E-08

-8.5265E-10

4.2302E-10

-1.6126E-11

S7

-2.6422E-03

3.0728E-03

-1.3392E-03

3.7947E-04

-7.4268E-05

1.0079E-05

-8.9654E-07

4.6349E-08

-1.0422E-09

S8

1.1459E-03

7.9332E-03

-4.5951E-03

1.4347E-03

-2.8536E-04

3.7493E-05

-3.1578E-06

1.5429E-07

-3.3179E-09

S9

2.2955E-03

8.9761E-03

-4.7502E-03

1.1284E-03

-9.6050E-05

-1.1314E-05

3.4211E-06

-2.9761E-07

9.1025E-09

S10

-8.2175E-03

5.6741E-03

-1.2607E-03

-4.9624E-04

3.9600E-04

-1.1009E-04

1.5834E-05

-1.1744E-06

3.5646E-08

S11

-7.2469E-03

2.0930E-03

1.3803E-04

-6.9953E-04

3.7481E-04

-9.9225E-05

1.4516E-05

-1.1223E-06

3.5949E-08

S12

3.8657E-04

-3.4559E-03

3.7962E-03

-2.7649E-03

1.1146E-03

-2.5944E-04

3.4708E-05

-2.4607E-06

7.0493E-08

S13

-5.3709E-03

4.5915E-03

3.0714E-04

-2.9644E-03

1.7575E-03

-4.8942E-04

7.3784E-05

-5.8186E-06

1.8843E-07

S14

-4.0334E-02

1.8660E-02

-5.5938E-03

-1.3473E-03

1.6212E-03

-5.3919E-04

8.9919E-05

-7.6713E-06

2.6726E-07

S15

-3.4851E-02

1.1774E-02

-4.4538E-03

1.2116E-03

-1.9159E-04

1.1802E-05

9.1031E-07

-1.8168E-07

7.9544E-09

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

In summary, the first to fifth embodiments correspondingly satisfy the relationship shown in the following table 11.

TABLE 11

Conditional expression (A) example	1	2	3	4	5
						PL(mm)	0.81	0.92	0.87	0.57	0.90
TTL/ImgH	6.38	6.40	6.52	6.43	6.42
						\|f/f1\|+\|f/f3\|	3.91	3.30	4.41	4.00	4.33
100×PL/ImgH	18.66	21.22	20.48	13.57	20.83
						R9/R10	1.51	0.91	1.86	1.81	1.83
(CT1+CT2)/(T12+T23)	5.31	6.92	5.01	5.37	5.05
						SAG41/SAG42	2.83	1.43	2.65	3.38	2.56
10×T45/TTL	1.85	2.12	1.56	1.71	1.53
						f/R10	4.31	3.71	3.91	3.70	3.94
CT3/T34	1.76	0.91	0.90	0.84	0.96

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 include one prism and six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

In an exemplary embodiment, the present application also provides an image pickup apparatus provided with an electron photosensitive element, which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS), to form an image. The camera device can be a stand-alone camera device such as a digital camera, or a camera module integrated on a mobile electronic device such as a mobile phone. The image pickup apparatus is equipped with the optical imaging lens described above.

Exemplary embodiments of the present application are described above with reference to the accompanying drawings. It should be understood by those skilled in the art that the above-described embodiments are merely examples for illustrative purposes and are not intended to limit the scope of the present application. Any modifications, equivalents and the like which come within the teachings of this application and the scope of the claims should be considered to be within the scope of this application.

Claims

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

the included angle between the reflecting surface of the prism and the optical axis is 45 degrees;

a diaphragm;

a first lens having a positive refractive power, an object-side surface of which is convex;

a second lens having an optical power;

a third lens with negative focal power, the image side surface of which is concave;

a fourth lens having an optical power;

a fifth lens with focal power, wherein the image side surface of the fifth lens is convex;

a sixth lens element having a negative refractive power, the object-side surface of which is convex;

an on-axis distance PL from an image side surface of the prism to an object side surface of the first lens satisfies 0.30mm < PL < 1.00 mm.

2. The optical imaging lens of claim 1, wherein an on-axis distance TTL from a reflection surface of the prism to an imaging surface of the optical imaging lens and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH > 6.00.

3. The optical imaging lens of claim 1, wherein the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f3 of the third lens satisfy 3.00 < | f/f1| - | f/f3| < 5.00.

4. The optical imaging lens according to claim 1, wherein an on-axis distance PL from the image side surface of the prism to the object side surface of the first lens and a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens satisfy 10.00 < 100 × PL/ImgH < 25.00.

5. The optical imaging lens of claim 1, wherein a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy 0.50 < R9/R10 < 2.00.

6. The optical imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a separation distance T12 of the first lens and the second lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 5.00 < (CT1+ CT2)/(T12-T23) < 7.00.

7. The optical imaging lens of claim 1, wherein an on-axis distance SAG41 between an intersection point of an object-side surface of the fourth lens and the optical axis to a vertex of an effective radius of the object-side surface of the fourth lens and an on-axis distance SAG42 between an intersection point of an image-side surface of the fourth lens and the optical axis to a vertex of an effective radius of the image-side surface of the fourth lens satisfy 1.00 < SAG41/SAG42 < 3.50.

8. The optical imaging lens of claim 1, wherein a distance T45 between the fourth lens and the fifth lens on the optical axis and an on-axis distance TTL between the reflection surface of the prism and the imaging surface of the optical imaging lens satisfy 1.00 < 10 × T45/TTL < 2.50.

9. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy 3.00 < f/R10 < 5.00.

10. The optical imaging lens of claim 1, wherein a center thickness CT3 of the third lens on the optical axis and a separation distance T34 of the third lens and the fourth lens on the optical axis satisfy 0.50 < CT3/T34 < 2.00.

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

a diaphragm;

a second lens having an optical power;

a fourth lens having an optical power;

an on-axis distance PL from the image side surface of the prism to the object side surface of the first lens and a half ImgH of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens satisfy 10.00 < 100 XPL/ImgH < 25.00.

12. The optical imaging lens of claim 11, wherein an on-axis distance TTL from a reflection surface of the prism to an imaging surface of the optical imaging lens and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH > 6.00.

13. The optical imaging lens according to claim 12, characterized in that an on-axis distance PL from an image side surface of the prism to an object side surface of the first lens satisfies 0.30mm < PL < 1.00 mm.

14. The optical imaging lens of claim 11, wherein the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f3 of the third lens satisfy 3.00 < | f/f1| - | f/f3| < 5.00.

15. The optical imaging lens of claim 11, wherein a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy 0.50 < R9/R10 < 2.00.

16. The optical imaging lens according to claim 11, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a separation distance T12 of the first lens and the second lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 5.00 < (CT1+ CT2)/(T12-T23) < 7.00.

17. The optical imaging lens of claim 11, wherein an on-axis distance SAG41 from an intersection point of an object-side surface of the fourth lens and the optical axis to a vertex of an effective radius of an object-side surface of the fourth lens and an on-axis distance SAG42 from an intersection point of an image-side surface of the fourth lens and the optical axis to a vertex of an effective radius of an image-side surface of the fourth lens satisfy 1.00 < SAG41/SAG42 < 3.50.

18. The optical imaging lens of claim 11, wherein a distance T45 between the fourth lens and the fifth lens on the optical axis and an on-axis distance TTL between the reflection surface of the prism and the imaging surface of the optical imaging lens satisfy 1.00 < 10 × T45/TTL < 2.50.

19. The optical imaging lens of claim 11, wherein an effective focal length f of the optical imaging lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy 3.00 < f/R10 < 5.00.

20. The optical imaging lens of claim 11, wherein a center thickness CT3 of the third lens on the optical axis and a separation distance T34 of the third lens and the fourth lens on the optical axis satisfy 0.50 < CT3/T34 < 2.00.