CN110471170B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN110471170B
CN110471170B CN201910797325.XA CN201910797325A CN110471170B CN 110471170 B CN110471170 B CN 110471170B CN 201910797325 A CN201910797325 A CN 201910797325A CN 110471170 B CN110471170 B CN 110471170B
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lens
optical imaging
imaging lens
optical
image
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CN110471170A (en
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谢检来
娄琪琪
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power, the image side of which is concave; a third lens having optical power; a fourth lens having positive optical power, the image-side surface of which is convex; a fifth lens element with negative refractive power having a convex object-side surface and a concave image-side surface; the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy: TTL/ImgH is less than or equal to 1.3.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
In recent years, with the rapid development of portable electronic devices such as smartphones and tablet computers, requirements for pixels and thickness of miniaturized cameras are increasingly high while pursuing good performance and ultra-thin performance of the portable electronic devices such as smartphones and tablet computers.
The image height of the existing miniaturized camera is usually smaller, the thickness of the lens is larger, and the requirement of smaller thickness of the lens can not be met while the large image surface is ensured. Therefore, the application requirements of the ultra-thin miniaturized cameras on portable electronic devices such as smart phones, tablet computers and the like are becoming wider and wider.
Disclosure of Invention
The application provides an optical imaging lens which is applicable to portable electronic products, has the advantages of miniaturization, large image surface, small thickness and good imaging quality.
An aspect of the present application provides an optical imaging lens sequentially including, from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens having optical power, the image side of which is concave; a third lens having optical power; a fourth lens having positive optical power, the image-side surface of which is convex; the object side surface of the fifth lens with negative focal power is a convex surface, and the image side surface of the fifth lens is a concave surface.
In one embodiment, the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens may satisfy: TTL/ImgH is less than or equal to 1.3;
In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R10 of the image side of the fifth lens may satisfy: 0.1 < (R8+R10)/(R8-R10) < 0.5.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy: f/f1 > 1.0.
In one embodiment, the radius of curvature R4 of the image side surface of the second lens and the total effective focal length f of the optical imaging lens may satisfy: r4/f is more than 0.6 and less than 1.2.
In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f12 of the first lens and the second lens may satisfy: f123/f12 is more than 0.5 and less than 1.3.
In one embodiment, the separation distance T12 of the first lens and the second lens on the optical axis and the separation distance T23 of the second lens and the third lens on the optical axis may satisfy: T12/T23 is more than 0.1 and less than 0.6.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens may satisfy: 2.0 < |f/f4|+|f/f5| < 3.5.
In one embodiment, the distance SAG41 on the optical axis between the intersection point of the object side surface of the fourth lens and the optical axis and the vertex of the effective radius of the object side surface of the fourth lens and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.2 < |SAG41/CT4| < 0.8.
In one embodiment, the sum Σat of the entrance pupil diameter EPD of the optical imaging lens and the separation distance on the optical axis between adjacent lenses among the first lens to the fifth lens may satisfy: 1.2 < EPD/ΣAT < 1.8.
In one embodiment, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, the interval distance T34 of the third lens and the fourth lens on the optical axis, and the interval distance T45 of the fourth lens and the fifth lens on the optical axis may satisfy: 1.0 < (CT4+CT5)/(T34+T45) < 1.8.
In one embodiment, the edge thickness ET1 of the first lens and the effective half-caliber DT11 of the object side surface of the first lens may satisfy: ET1/DT11 is more than 0.2 and less than 0.5.
In one embodiment, the total effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens may satisfy: 0.4 < (f/EPD)/ImgH < 0.9.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
Fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
Fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of an optical imaging lens according to embodiment 5 of the present application;
Fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;
Fig. 13 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 7 of the present application;
Fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, respectively.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to an exemplary embodiment of the present application may include five lenses having optical power, which are a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, respectively. The five lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses in the first lens to the fifth lens can have a spacing distance.
In an exemplary embodiment, the first lens may have positive optical power; the second lens has optical power, and the image side surface of the second lens can be concave; the third lens has optical power; the fourth lens element may have positive refractive power, and an image-side surface thereof may be convex; the fifth lens element may have negative refractive power, wherein the object-side surface thereof may be convex and the image-side surface thereof may be concave.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: TTL/ImgH is less than or equal to 1.3, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. The TTL/ImgH is less than or equal to 1.3, so that the compact structure of the optical imaging lens can be ensured, and the tolerance sensitivity is reduced; but also is beneficial to realizing the large image surface and miniaturization of the optical imaging lens, so that the optical imaging lens is more suitable for portable electronic equipment with strict requirements on the large image surface and thickness dimension.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1 < (R8+R10)/(R8-R10) < 0.5, wherein R8 is the radius of curvature of the image side of the fourth lens and R10 is the radius of curvature of the image side of the fifth lens. More specifically, R8 and R10 may further satisfy: 0.1 < (R8+R10)/(R8-R10) < 0.4. Satisfying 0.1 < (R8+R10)/(R8-R10) < 0.5, not only ensuring compact structure of the optical imaging lens and reducing tolerance sensitivity; and the adjusting quantity of the fourth lens and the fifth lens to the aberration of the optical imaging lens can be reasonably adjusted.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f/f1 > 1.0, wherein f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. Satisfies f/f1 > 1.0, is favorable for reducing deflection angle of incident light rays and improves imaging quality of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.6 < R4/f < 1.2, wherein R4 is the radius of curvature of the image side surface of the second lens, and f is the total effective focal length of the optical imaging lens. More specifically, R4 and f may further satisfy: r4/f is more than 0.7 and less than 1.1. The R4/f which is more than 0.6 and less than 1.2 is satisfied, the deflection of the incident light of the second lens can be restrained, and the tolerance sensitivity of the optical imaging lens is reduced.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < f123/f12 < 1.3, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f12 is the combined focal length of the first lens and the second lens. More specifically, f123 and f12 may further satisfy: 0.7 < f123/f12 < 1.1. Satisfies 0.5 < f123/f12 < 1.3, is beneficial to balancing tolerance sensitivity of each lens, and can reduce the total length of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1 < T12/T23 < 0.6, wherein T12 is the distance between the first lens and the second lens on the optical axis, and T23 is the distance between the second lens and the third lens on the optical axis. More specifically, T12 and T23 may further satisfy: T12/T23 is more than 0.1 and less than 0.5. Satisfies 0.1 < T12/T23 < 0.6, not only is favorable for the assembly of the first lens and the second lens, but also the total length of the optical imaging lens can be reduced.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.0 < |f/f4|+|f/f5| < 3.5, where f is the total effective focal length of the optical imaging lens, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. Satisfies 2.0 < |f/f4|+|f/f5| < 3.5, can be favorable for reasonably distributing the focal power of the optical imaging lens and reduces the tolerance sensitivity of each lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < |SAG41/CT4| < 0.8, wherein SAG41 is the distance on the optical axis between the intersection point of the object side surface of the fourth lens and the optical axis and the vertex of the effective radius of the object side surface of the fourth lens, and CT4 is the center thickness of the fourth lens on the optical axis. More specifically, SAG41 and CT4 may further satisfy: 0.3 < |SAG41/CT4| < 0.7. Meets the requirement that the absolute SAG41/CT4 is less than 0.8 and is not only beneficial to the manufacturing and forming of the optical imaging lens, but also beneficial to the expansion of the imaging surface of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.2 < EPD/ΣAT < 1.8, wherein EPD is the entrance pupil diameter of the optical imaging lens, ΣAT is the sum of the interval distances on the optical axis between adjacent lenses in the first lens to the fifth lens. More specifically, EPD and Σat may further satisfy: 1.2 < EPD/ΣAT < 1.7. The EPD/Sigma AT is smaller than 1.8 and is smaller than 1.2, the total length of the optical imaging lens can be reduced, the entrance pupil aperture of the optical imaging lens can be enlarged, and therefore the light inlet amount of the optical imaging lens is improved, and the signal to noise ratio of the image sensor is improved.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (Ct4+Ct5)/(T34+T45) < 1.8, wherein CT4 is the center thickness of the fourth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, T34 is the distance between the third lens and the fourth lens on the optical axis, and T45 is the distance between the fourth lens and the fifth lens on the optical axis. Satisfying 1.0 < (CT 4+ CT 5)/(T34 + T45) < 1.8, can facilitate the assembly of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.2 < ET1/DT11 < 0.5, where ET1 is the edge thickness of the first lens and DT11 is the effective half-caliber of the object side of the first lens. Satisfies the condition that ET1/DT11 is smaller than 0.5 and 0.2, and is beneficial to the manufacturing and forming of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4 < (f/EPD)/ImgH < 0.9, wherein f is the total effective focal length of the optical imaging lens, EPD is the entrance pupil diameter of the optical imaging lens, and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, f, EPD, and ImgH may further satisfy: 0.5 < (f/EPD)/ImgH < 0.7. Satisfies 0.4 < (f/EPD)/ImgH < 0.9, and can be beneficial to improving the light inlet quantity of the optical imaging lens while guaranteeing a large image plane, thereby realizing miniaturization of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The application provides an optical imaging lens with the characteristics of large image plane, miniaturization and the like. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the total length of the optical imaging lens is reduced, and the processability of the optical imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In this example, the total effective focal length f of the optical imaging lens is 3.46mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 4.45mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 3.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 43.2 °, and the aperture value Fno is 2.04.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following Table 2 shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16、A18 and A 20 that can be used for each of the aspherical mirrors S1-S10 in example 1.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.5335E-02 1.2446E+00 -9.9826E+00 4.8826E+01 -1.5025E+02 2.9215E+02 -3.4782E+02 2.3105E+02 -6.5514E+01
S2 -7.5498E-02 5.2539E-02 -4.4774E-01 5.1032E+00 -2.7738E+01 7.6748E+01 -1.1519E+02 8.9571E+01 -2.8318E+01
S3 -1.8419E-01 1.2400E+00 -9.2649E+00 4.6772E+01 -1.4945E+02 2.9875E+02 -3.6184E+02 2.4270E+02 -6.9149E+01
S4 -6.8308E-02 2.1044E-01 -5.9183E-01 4.5048E+00 -2.1031E+01 5.3898E+01 -7.6903E+01 5.7883E+01 -1.7926E+01
S5 -1.5470E-01 4.7202E-01 -3.5963E+00 1.5806E+01 -4.3091E+01 7.2744E+01 -7.4088E+01 4.1440E+01 -9.5786E+00
S6 -9.5239E-02 6.0912E-02 -8.4192E-01 3.3139E+00 -7.3420E+00 9.6349E+00 -7.4468E+00 3.1133E+00 -5.3333E-01
S7 1.6071E-02 -1.4838E-01 1.0656E-01 -5.7012E-02 2.2366E-02 1.4090E-03 -2.2314E-02 1.6613E-02 -3.4461E-03
S8 1.2255E-01 -3.7014E-01 5.3051E-01 -5.3004E-01 3.7123E-01 -1.6693E-01 4.5077E-02 -6.6427E-03 4.1079E-04
S9 -3.5659E-01 1.7541E-01 -1.4660E-02 -1.4083E-02 5.9349E-03 -1.1182E-03 1.1563E-04 -6.3356E-06 1.4291E-07
S10 -2.1105E-01 1.7081E-01 -9.6825E-02 3.7765E-02 -9.9916E-03 1.7372E-03 -1.8861E-04 1.1558E-05 -3.0457E-07
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.50mm, the total length TTL of the optical imaging lens is 4.35mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.40mm, the maximum half field angle Semi-FOV of the optical imaging lens is 43.4 °, and the aperture value Fno is 2.07.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
TABLE 4 Table 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.40mm, the total length TTL of the optical imaging lens is 4.23mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.41mm, the maximum half field angle Semi-FOV of the optical imaging lens is 44.1 °, and the aperture value Fno is 2.09.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.1683E-02 1.4730E-01 -8.8896E-01 2.9408E+00 -5.5414E+00 5.3744E+00 -2.1529E+00 0.0000E+00 0.0000E+00
S2 -1.8416E-01 2.0594E-01 9.8733E-01 -5.1125E+00 9.3855E+00 -8.0710E+00 2.6142E+00 0.0000E+00 0.0000E+00
S3 -2.0615E-01 4.7599E-01 5.9230E-01 -4.3633E+00 7.7338E+00 -5.4975E+00 1.0869E+00 0.0000E+00 0.0000E+00
S4 -7.5341E-02 3.0937E-01 1.4126E-01 -1.7291E+00 3.2433E+00 -2.3210E+00 6.4319E-01 0.0000E+00 0.0000E+00
S5 -2.1002E-01 1.2198E-01 -2.3463E-01 -3.9319E+00 2.9743E+01 -9.9754E+01 1.7962E+02 -1.6969E+02 6.6919E+01
S6 -1.4703E-01 2.1666E-02 -6.2433E-01 2.8598E+00 -7.4011E+00 1.1371E+01 -1.0284E+01 5.0422E+00 -1.0145E+00
S7 4.3919E-02 -1.3858E-01 1.4792E-01 -1.1132E-01 4.4407E-02 -1.0023E-02 6.6698E-04 8.7832E-04 -2.5091E-04
S8 1.6870E-01 -2.8831E-01 3.1350E-01 -1.7500E-01 4.5210E-02 -1.0387E-04 -2.9353E-03 6.7405E-04 -5.0175E-05
S9 -3.5317E-01 1.5789E-01 -1.6419E-04 -2.0012E-02 7.2271E-03 -1.2424E-03 1.1221E-04 -4.6406E-06 4.4017E-08
S10 -2.2260E-01 1.7212E-01 -9.5813E-02 3.7154E-02 -9.8270E-03 1.7083E-03 -1.8551E-04 1.1403E-05 -3.0290E-07
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.40mm, the total length TTL of the optical imaging lens is 4.23mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.41mm, the maximum half field angle Semi-FOV of the optical imaging lens is 44.1 °, and the aperture value Fno is 2.09.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.6321E-02 5.9980E-02 -2.4619E-01 6.9766E-01 -1.2120E+00 1.1351E+00 -4.8397E-01 0.0000E+00 0.0000E+00
S2 -2.0517E-01 3.6139E-01 -1.3249E-01 -2.8478E-01 -8.5453E-01 2.7611E+00 -2.0419E+00 0.0000E+00 0.0000E+00
S3 -2.6722E-01 7.1356E-01 -5.2828E-01 3.7535E-03 -1.3540E+00 3.9774E+00 -2.9318E+00 0.0000E+00 0.0000E+00
S4 -1.3206E-01 4.7385E-01 -2.8153E-01 -7.5253E-01 1.8363E+00 -1.3540E+00 3.5272E-01 0.0000E+00 0.0000E+00
S5 -1.8869E-01 8.9829E-02 -1.2912E+00 8.5623E+00 -3.5194E+01 8.7827E+01 -1.3082E+02 1.0622E+02 -3.5518E+01
S6 -2.0501E-01 3.2349E-01 -2.0058E+00 7.5209E+00 -1.7651E+01 2.5911E+01 -2.3069E+01 1.1380E+01 -2.3639E+00
S7 6.4925E-02 -1.9322E-01 3.0378E-01 -3.7717E-01 3.1248E-01 -1.7282E-01 6.0428E-02 -1.1754E-02 9.5453E-04
S8 2.2682E-01 -3.8314E-01 4.2756E-01 -3.1316E-01 1.4603E-01 -4.2597E-02 7.5200E-03 -7.3485E-04 3.0511E-05
S9 -2.5095E-01 6.6034E-02 2.8290E-02 -2.1140E-02 5.7836E-03 -8.5950E-04 7.1465E-05 -2.9711E-06 4.1384E-08
S10 -1.4708E-01 8.9203E-02 -3.8306E-02 1.0895E-02 -1.9133E-03 1.8003E-04 -5.1155E-06 -4.2351E-07 2.6814E-08
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.46mm, the total length TTL of the optical imaging lens is 4.23mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.41mm, the maximum half field angle Semi-FOV of the optical imaging lens is 43.4 °, and the aperture value Fno is 2.09.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.1434E-02 1.4452E-01 -7.5868E-01 2.1759E+00 -3.6231E+00 3.1113E+00 -1.1193E+00 0.0000E+00 0.0000E+00
S2 -1.8288E-01 2.7387E-01 7.6194E-02 -1.4543E+00 2.8194E+00 -2.4611E+00 7.9015E-01 0.0000E+00 0.0000E+00
S3 -2.0747E-01 5.4777E-01 -4.3828E-01 -7.4818E-02 -3.2154E-01 1.7605E+00 -1.5109E+00 0.0000E+00 0.0000E+00
S4 -6.7929E-02 3.5021E-01 -1.5761E-01 -9.7831E-01 3.0645E+00 -3.7043E+00 1.9136E+00 0.0000E+00 0.0000E+00
S5 -2.0647E-01 4.7739E-02 -9.8545E-01 5.5358E+00 -1.6694E+01 2.4530E+01 -1.1462E+01 -1.0508E+01 1.0730E+01
S6 -1.7010E-01 8.1977E-02 -8.6975E-01 3.0850E+00 -6.5257E+00 8.4033E+00 -6.4692E+00 2.7142E+00 -4.5936E-01
S7 5.8412E-02 -1.6891E-01 2.0987E-01 -1.9834E-01 1.2278E-01 -5.5390E-02 1.9183E-02 -4.2072E-03 3.9854E-04
S8 1.5732E-01 -2.6435E-01 3.0469E-01 -1.9581E-01 7.4606E-02 -1.7302E-02 2.3682E-03 -1.7047E-04 4.5863E-06
S9 -3.3154E-01 1.2877E-01 2.0965E-02 -3.0696E-02 1.0962E-02 -2.1009E-03 2.3482E-04 -1.4473E-05 3.8200E-07
S10 -2.0635E-01 1.4759E-01 -7.6614E-02 2.7944E-02 -7.0024E-03 1.1517E-03 -1.1740E-04 6.7105E-06 -1.6429E-07
Table 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.44mm, the total length TTL of the optical imaging lens is 4.23mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.41mm, the maximum half field angle Semi-FOV of the optical imaging lens is 43.5 °, and the aperture value Fno is 2.09.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.0741E-02 1.5771E-01 -8.7953E-01 2.6860E+00 -4.7033E+00 4.2602E+00 -1.6073E+00 0.0000E+00 0.0000E+00
S2 -1.7079E-01 2.2097E-01 2.9182E-01 -1.9710E+00 3.3486E+00 -2.5893E+00 6.9973E-01 0.0000E+00 0.0000E+00
S3 -1.9280E-01 4.7563E-01 -1.4631E-01 -8.3407E-01 6.4133E-01 1.2197E+00 -1.4243E+00 0.0000E+00 0.0000E+00
S4 -6.8781E-02 3.6298E-01 -3.7608E-01 1.7116E-01 1.0381E-02 3.1679E-01 -2.0866E-01 0.0000E+00 0.0000E+00
S5 -1.9487E-01 -2.0184E-02 -2.1034E-01 1.6001E+00 -5.2259E+00 5.7588E+00 4.0363E+00 -1.4127E+01 9.0964E+00
S6 -1.6765E-01 1.2018E-01 -1.0450E+00 3.7280E+00 -8.0064E+00 1.0572E+01 -8.4196E+00 3.7050E+00 -6.7966E-01
S7 5.3073E-02 -1.5935E-01 1.8673E-01 -1.6525E-01 9.4741E-02 -4.0576E-02 1.3712E-02 -2.8108E-03 2.2698E-04
S8 1.5941E-01 -2.6433E-01 2.9340E-01 -1.7669E-01 5.9022E-02 -1.0072E-02 4.2528E-04 1.1131E-04 -1.2490E-05
S9 -3.2593E-01 1.2712E-01 1.9194E-02 -2.9303E-02 1.0526E-02 -2.0264E-03 2.2758E-04 -1.4096E-05 3.7382E-07
S10 -2.0614E-01 1.4770E-01 -7.6406E-02 2.7605E-02 -6.8268E-03 1.1063E-03 -1.1101E-04 6.2360E-06 -1.4966E-07
Table 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, filter E6 and imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the total effective focal length f of the optical imaging lens is 3.46mm, the total length TTL of the optical imaging lens is 4.23mm, the half of the diagonal length ImgH of the effective pixel region on the imaging surface S13 of the optical imaging lens is 3.41mm, the maximum half field angle Semi-FOV of the optical imaging lens is 43.3 °, and the aperture value Fno is 2.09.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 13
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.
In summary, examples 1 to 7 each satisfy the relationship shown in table 15.
Conditional\embodiment 1 2 3 4 5 6 7
TTL/ImgH 1.28 1.28 1.24 1.24 1.24 1.24 1.24
(R8+R10)/(R8-R10) 0.11 0.38 0.14 0.25 0.13 0.13 0.13
f/f1 1.04 1.16 1.10 1.03 1.13 1.12 1.13
R4/f 1.07 1.01 0.94 0.98 0.88 0.89 0.85
f123/f12 0.85 0.89 0.95 0.80 1.03 1.03 0.88
T12/T23 0.36 0.16 0.16 0.21 0.15 0.15 0.23
|f/f4|+|f/f5| 3.22 2.32 3.05 2.97 2.95 2.95 3.01
|SAG41/CT4| 0.63 0.45 0.46 0.41 0.44 0.44 0.53
EPD/ΣAT 1.65 1.43 1.51 1.29 1.41 1.43 1.52
(CT4+CT5)/(T34+T45) 1.71 1.15 1.25 1.05 1.19 1.21 1.26
ET1/DT11 0.39 0.29 0.36 0.37 0.36 0.36 0.36
(f/EPD)/ImgH 0.59 0.61 0.61 0.61 0.61 0.61 0.61
TABLE 15
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:
The first lens with positive focal power has a convex object side surface and a concave image side surface;
A second lens element with negative refractive power having a convex object-side surface and a concave image-side surface;
A third lens having optical power;
a fourth lens having positive optical power, the image-side surface of which is convex;
a fifth lens element with negative refractive power having a convex object-side surface and a concave image-side surface;
wherein the number of lenses of the optical imaging lens with focal power is five;
The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy: TTL/ImgH is less than or equal to 1.24 and less than or equal to 1.3;
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: T12/T23 is more than 0.1 and less than 0.6;
the total effective focal length f of the optical imaging lens, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy: and the ratio of f/f4 I++ f/f 5I is less than or equal to 2.95 and less than 3.5.
2. The optical imaging lens of claim 1, wherein a radius of curvature R8 of an image side surface of the fourth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 0.1 < (R8+R10)/(R8-R10) < 0.5.
3. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens and an effective focal length f1 of the first lens satisfy: f/f1 is more than 1.0 and less than or equal to 1.16.
4. The optical imaging lens of claim 1, wherein a radius of curvature R4 of an image side surface of the second lens and a total effective focal length f of the optical imaging lens satisfy: r4/f is more than 0.6 and less than 1.2.
5. The optical imaging lens of claim 1, wherein a combined focal length f123 of the first lens, the second lens, and the third lens and a combined focal length f12 of the first lens and the second lens satisfy: f123/f12 is more than 0.5 and less than 1.3.
6. The optical imaging lens according to claim 1, wherein a distance SAG41 on the optical axis between an intersection point of the object side surface of the fourth lens and the optical axis and an effective radius vertex of the object side surface of the fourth lens and a center thickness CT4 of the fourth lens on the optical axis satisfy: 0.2 < |SAG41/CT4| < 0.8.
7. The optical imaging lens according to claim 1, wherein a sum Σat of an entrance pupil diameter EPD of the optical imaging lens and a separation distance on the optical axis between adjacent lenses of the first lens to the fifth lens satisfies: 1.2 < EPD/ΣAT < 1.8.
8. The optical imaging lens according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a separation distance T34 of the third lens and the fourth lens on the optical axis, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy: 1.0 < (CT4+CT5)/(T34+T45) < 1.8.
9. The optical imaging lens of claim 1, wherein an edge thickness ET1 of the first lens and an effective half-caliber DT11 of an object side surface of the first lens satisfy: ET1/DT11 is more than 0.2 and less than 0.5.
10. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens, an entrance pupil diameter EPD of the optical imaging lens, and a half of a diagonal length ImgH of an effective pixel region on an imaging surface of the optical imaging lens satisfy: 0.4 < (f/EPD)/ImgH < 0.9.
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