CN106990508B - Imaging lens - Google Patents
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- CN106990508B CN106990508B CN201710383984.XA CN201710383984A CN106990508B CN 106990508 B CN106990508 B CN 106990508B CN 201710383984 A CN201710383984 A CN 201710383984A CN 106990508 B CN106990508 B CN 106990508B
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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
- 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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
The application discloses an imaging lens, this imaging lens includes along the optical axis from the object side to the image side in proper order: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces; the third lens has negative focal power; the fourth lens has positive focal power or negative focal power; and the fifth lens has positive focal power or negative focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface or a plane. Wherein, the air space T23 of the second lens and the third lens on the optical axis and the air space T34 of the third lens and the fourth lens on the optical axis satisfy 1.0 ≤ T23/T34< 2.0.
Description
Technical Field
The present invention relates to an imaging lens, and more particularly, to an imaging lens including five lenses.
Background
With the development of science and technology, portable electronic products are gradually emerging, and portable electronic products with a camera shooting function are more popular. For an imaging lens in a portable electronic product, on the basis of meeting the miniaturization, higher requirements are put forward on the imaging quality of the lens.
The newly proposed double-shooting concept can combine the wide angle and the telephoto to achieve the purpose of zooming on the premise of ensuring the lightness and thinness of the electronic product, so that the lens can obtain clear images at a short distance or a long distance, and a user can obtain different visual effect feelings and better use experience.
Disclosure of Invention
According to an aspect of the present application, there is provided an imaging lens including, in order from an object side to an image side along an optical axis: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens can have positive focal power, and the object side surface of the first lens is a convex surface; the second lens can have negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces; the third lens may have a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens element can have positive or negative power, and has a concave object-side surface and a convex or flat image-side surface. And the air space T23 between the second lens and the third lens on the optical axis and the air space T34 between the third lens and the fourth lens on the optical axis can satisfy the condition that T23/T34 is more than or equal to 1.0 and less than 2.0.
Another aspect of the present application provides an imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens can have positive focal power, and the object side surface of the first lens is a convex surface; the second lens can have negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces; the third lens may have a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens element can have positive or negative power, and has a concave object-side surface and a convex or flat image-side surface. And f12/f45 is more than or equal to 0 and is more than or equal to-1 and less than or equal to 0, wherein the combined focal length f12 of the first lens and the second lens and the combined focal length f45 of the fourth lens and the fifth lens can meet the requirement of-1 and less than or equal to f12/f 45.
Another aspect of the present application also provides an imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens can have positive focal power, and the object side surface of the first lens is a convex surface; the second lens can have negative focal power, and both the object side surface and the image side surface of the second lens are concave; the third lens may have a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens element has positive or negative focal power, and has a concave object-side surface and a convex or flat image-side surface. The focal length f1 of the first lens, the focal length f2 of the second lens and the focal length f5 of the fifth lens can satisfy the condition that f1 x f2/f5 is not more than 0 and not more than 6.
In one embodiment, the maximum half field angle HFOV of the imaging lens may satisfy HFOV ≦ 25 °.
In one embodiment, the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the imaging lens and the effective focal length f of the imaging lens can satisfy that TTL/f is less than or equal to 1.0.
In one embodiment, the focal length f2 of the second lens and the focal length f1 of the first lens can satisfy-4 ≦ f2/f1 ≦ -1.
In one embodiment, the effective focal length f of the imaging lens and the focal length f3 of the third lens can satisfy-1 ≦ f/f3 ≦ 0.
In one embodiment, the effective focal length f of the imaging lens and the focal length f5 of the fifth lens can satisfy-1.5 ≦ f/f5 ≦ 0.
In one embodiment, the focal length f3 of the third lens and the focal length f4 of the fourth lens can satisfy-11 ≦ (f3-f4)/(f3+ f4) ≦ 1.
In one embodiment, the Abbe number V4 of the fourth lens and the Abbe number V5 of the fifth lens can satisfy 28 ≦ V4-V5 |.
In one embodiment, a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R2 of the image-side surface of the first lens may satisfy-0.5 ≦ R1/R2 ≦ 0.2.
In one embodiment, a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R4 of the image side surface of the second lens may satisfy-3 ≦ (R1+ R4)/(R4-R4) ≦ 1.
The imaging lens adopts a plurality of (for example, five) lenses, and has at least one of the following beneficial effects by reasonably distributing the focal power and the surface type of each lens of the imaging lens and the spacing distance of each lens:
miniaturization of the lens is realized;
the long-focus characteristic of the lens is ensured;
the sensitivity of the system is reduced;
the processing and molding of the lens are facilitated;
correcting various aberrations; and
the resolution and the imaging quality of the lens are improved.
Drawings
Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments thereof, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 1, respectively;
fig. 3 shows a schematic configuration diagram of an 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 imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of an imaging lens of embodiment 3, respectively;
fig. 7 shows a schematic configuration diagram of an imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of an imaging lens of embodiment 4, respectively;
fig. 9 is a schematic structural view showing an imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of an imaging lens of embodiment 5, respectively;
fig. 11 is a schematic structural view showing an 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 an imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 7;
fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the imaging lens of embodiment 8.
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 only used to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, a surface closest to the object in each lens is referred to as an object side surface, and a surface closest to the imaging surface in each lens is referred to as an image side surface.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after the list of listed features, that 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 examples or illustrations.
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 imaging lens according to an exemplary embodiment of the present application has, for example, five lenses, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in order from the object side to the image side along the optical axis.
According to an exemplary embodiment of the present application, the first lens may have a positive optical power, and the object-side surface thereof is convex; the second lens can have negative focal power, and the object side surface of the second lens is a concave surface; the third lens may have a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens element can have positive or negative power, and has a concave object-side surface and a convex or flat image-side surface.
In an exemplary embodiment, the maximum half field angle HFOV of the imaging lens may satisfy HFOV ≦ 25 °, and more specifically, the HFOV may further satisfy 22.2 ≦ HFOV ≦ 23.9 °.
In application, the distribution of the powers of the lenses can be reasonably optimized. Between the focal length f1 of the first lens and the focal length f2 of the second lens, it can be satisfied that-4. ltoreq. f2/f 1. ltoreq.1, more specifically, f1 and f2 can further be satisfied that-3.29. ltoreq. f2/f 1. ltoreq. 1.62. The reasonable distribution of the focal power can effectively correct the chromatic aberration of the lens and reduce the high-grade spherical aberration of the telephoto lens.
Between the effective focal length f of the imaging lens and the focal length f3 of the third lens, f/f3 is equal to or more than-1 and equal to or less than 0, more specifically, f and f3 are equal to or more than-0.95 and equal to or more than f/f3 and equal to or less than-0.01. The reasonable distribution of the focal power of the third lens is beneficial to correcting the high-level aberration of the lens.
An effective focal length f of the imaging lens and a focal length f5 of the fifth lens can satisfy-1.5 ≦ f/f5 ≦ 0, and more specifically, f and f5 can further satisfy-1.43 ≦ f/f5 ≦ -0.27. The focal power of the fifth lens is reasonably distributed, so that the miniaturization of the lens is facilitated; meanwhile, the reasonable distribution of the focal power of the fifth lens is also beneficial to reducing the astigmatism of the system.
The focal length f3 of the third lens and the focal length f4 of the fourth lens can meet the requirement that (f3-f4)/(f3+ f4) is less than or equal to-11 and less than or equal to 1, and more particularly, f3 and f4 can further meet the requirement that (f3-f4)/(f3+ f4) is less than or equal to-10.92 and less than or equal to 0.69. By properly distributing the powers of the third lens and the fourth lens, the high-order aberrations of the lens can be balanced.
The focal length f1 of the first lens, the focal length f2 of the second lens and the focal length f5 of the fifth lens can satisfy 0 ≦ f1 ≦ f2/f5 ≦ 6mm, and more specifically, f1, f2 and f5 can further satisfy 0.89mm ≦ f1 ≦ f2/f5 ≦ 5.53 mm. The lens has a long-focus characteristic while being effectively miniaturized by reasonably distributing the focal power of the first lens, the second lens and the fifth lens to balance the primary aberration and the high-order aberration of the system.
In an exemplary embodiment, the combined focal length f12 of the first and second lenses and the combined focal length f45 of the fourth and fifth lenses can satisfy-1 ≦ f12/f45 ≦ 0, and more specifically, f12 and f45 can further satisfy-0.70 ≦ f12/f45 ≦ -0.22. Reasonably distributing the synthetic focal length f12 and the synthetic focal length f45 to ensure the long-focus characteristic of the lens and realize the telephoto function of the lens; meanwhile, the lens can have small depth of field and larger magnification.
The imaging lens according to the exemplary embodiment of the present application can maintain miniaturization of the lens while satisfying its telephoto characteristic. Specifically, the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the imaging lens and the effective focal length f of the imaging lens satisfy that TTL/f is less than or equal to 1.0, and more specifically, TTL and f further satisfy that TTL/f is less than or equal to 0.94 and is more than or equal to 0.88.
In addition, the curvature radius of each mirror surface can be reasonably arranged. For example, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy-0.5. ltoreq. R1/R2. ltoreq.0.2, and more specifically, R1 and R2 may further satisfy-0.40. ltoreq. R1/R2. ltoreq.0.11. The shape of the first lens is reasonably limited, so that the processing and the molding of the lens can be facilitated, and the miniaturization of the lens can be realized.
The radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R4 of the image-side surface of the second lens can satisfy-3 ≦ (R1+ R4)/(R4-R4) ≦ -1, and more specifically, R1 and R4 can further satisfy-2.97 ≦ (R1+ R4)/(R4-R4) ≦ -1.26. The reasonable arrangement of the curvature radius R1 of the object side surface of the first lens and the curvature radius R4 of the image side surface of the second lens is beneficial to balancing the high-level spherical aberration and the high-level astigmatism of the system and reducing the sensitivity of the system.
In an exemplary embodiment, the abbe number V4 of the fourth lens and the abbe number V5 of the fifth lens may satisfy | V4-V5|, and more particularly, V4 and V5 may further satisfy | V4-V5| -35.70. When the dispersion coefficient V4 of the fourth lens and the dispersion coefficient V5 of the fifth lens meet | V4-V5| more than or equal to 28 ≦ the chromatic aberration of the system, the high-level aberration is balanced, and the imaging quality of the lens is improved.
Optionally, the imaging lens of the present application may further include a filter for correcting color deviation. The filter may be disposed, for example, between the fifth lens and the imaging surface. It should be understood by those skilled in the art that the filter may be disposed at other positions as desired.
The imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power and the surface type of each lens, the on-axis distance between the lenses and the like, the telephoto characteristic of the lens can be ensured, the system sensitivity is reduced, the miniaturization of the lens is ensured, and the imaging quality is improved, so that the imaging lens is more favorable for production and processing and is applicable to portable electronic products. In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center 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 in imaging can be eliminated as much as possible, so that the imaging quality of the lens is improved.
However, it will be appreciated by those skilled in the art that the number of lenses constituting the lens barrel 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 five lenses are exemplified in the embodiment, the imaging lens is not limited to including five lenses. The imaging lens may also include other numbers of lenses, if desired.
Specific examples of an imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An 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 imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object side surface S1 and an image side surface S2; a second lens E2 having an object side surface S3 and an image side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object-side surface S9 and an image-side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side S11 and an image side S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the object side and the first lens E1 to improve the imaging quality. The light from the object passes through the respective surfaces S1 to S12 in order and is finally imaged on the imaging surface S13.
Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 1.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | Go to nothing | All-round | ||
| STO | Spherical surface | Go to nothing | -0.4461 | ||
| S1 | Aspherical surface | 1.4329 | 0.6889 | 1.546/56.11 | -0.9090 |
| S2 | Aspherical surface | -14.3853 | 0.0689 | -26.0563 | |
| S3 | Aspherical surface | -44.8622 | 0.2000 | 1.666/20.41 | -96.8496 |
| S4 | Aspherical surface | 3.7236 | 0.9078 | 0.9038 | |
| S5 | Aspherical surface | -8.8827 | 0.2000 | 1.546/56.11 | 89.3317 |
| S6 | Aspherical surface | 6.9290 | 0.7513 | 36.9521 | |
| S7 | Aspherical surface | -20.8201 | 0.4016 | 1.666/20.41 | 99.0000 |
| S8 | Aspherical surface | -4.5035 | 0.4246 | 3.2800 | |
| S9 | Aspherical surface | -2.0922 | 0.4223 | 1.546/56.11 | -0.1227 |
| S10 | Aspherical surface | -93.4964 | 0.0423 | 99.0000 | |
| S11 | Spherical surface | Go to nothing | 0.2100 | 1.517/64.17 | |
| S12 | Spherical surface | Go to nothing | 0.6237 | ||
| S13 | Spherical surface | Go to nothing |
TABLE 1
As can be seen from table 1, the radius of curvature R1 of the object-side surface S1 of the first lens E1 and the radius of curvature R2 of the image-side surface S2 of the first lens E1 satisfy the relationship of-0.10 for R1/R2; a radius of curvature R1 of the object side surface S1 of the first lens E1 and a radius of curvature R4 of the image side surface S4 of the second lens E2 satisfy (R1+ R4)/(R4-R4) ═ 2.25; the dispersion coefficient V4 of the fourth lens E4 and the dispersion coefficient V5 of the fifth lens E5 satisfy | V4-V5| 35.70; an air interval T23 of the second lens E2 and the third lens E3 on the optical axis and an air interval T34 of the third lens E3 and the fourth lens E4 on the optical axis satisfy 1.21 as T23/T34.
In the embodiment, five lenses are taken as an example, and the wide-angle lens and the telephoto lens are combined to achieve the purpose of zooming while ensuring the miniaturization of the lens by reasonably distributing the focal length of each lens, the surface type of each lens and the interval between the lenses. Each aspherical surface type x is defined by the following formula:
wherein x is the distance rise from the vertex of the aspheric surface 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, and c is 1/R (i.e., paraxial curvature c is the reciprocal of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1 above); 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 mirror surfaces S1 to S10 in example 14、A6、A8、A10、A12、A14、A16And A18。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | 3.5600E-02 | 2.6012E-03 | 4.6500E-02 | -1.6240E-01 | 3.4090E-01 | -4.0850E-01 | 2.5830E-01 | -6.8200E-02 |
| S2 | 7.5536E-03 | -8.9100E-02 | 4.4440E-01 | -1.2267E+00 | 1.9560E+00 | -1.8087E+00 | 9.0420E-01 | -1.9140E-01 |
| S3 | -1.6660E-04 | -1.4510E-01 | 8.6700E-01 | -2.6942E+00 | 4.8760E+00 | -5.0892E+00 | 2.8505E+00 | -6.6490E-01 |
| S4 | 1.0700E-02 | -1.0380E-01 | 7.1790E-01 | -2.5050E+00 | 5.1778E+00 | -6.1968E+00 | 3.9910E+00 | -1.0784E+00 |
| S5 | -3.4500E-02 | -2.8420E-01 | 1.7139E+00 | -6.8422E+00 | 1.6812E+01 | -2.5282E+01 | 2.1028E+01 | -7.4561E+00 |
| S6 | -3.6890E-03 | -2.3400E-02 | 8.8700E-02 | 9.0900E-02 | -5.9980E-01 | 9.1080E-01 | -6.0440E-01 | 1.4290E-01 |
| S7 | -8.9030E-03 | -1.8640E-01 | 3.8060E-01 | -5.7860E-01 | 5.6240E-01 | -3.1810E-01 | 9.6500E-02 | -1.2200E-02 |
| S8 | 4.1000E-02 | -2.2380E-01 | 4.0050E-01 | -4.9000E-01 | 3.7670E-01 | -1.7030E-01 | 4.1400E-02 | -4.1950E-03 |
| S9 | -4.3700E-02 | 8.1500E-02 | -1.0400E-02 | -3.9500E-02 | 3.7500E-02 | -1.5500E-02 | 3.1998E-03 | -2.6710E-04 |
| S10 | -1.8840E-01 | 2.1320E-01 | -1.7170E-01 | 9.2400E-02 | -3.2000E-02 | 6.5775E-03 | -6.7700E-04 | 2.2985E-05 |
TABLE 2
Table 3 gives the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 in embodiment 1.
| f1(mm) | 2.42 | f(mm) | 5.59 |
| f2(mm) | -5.15 | TTL(mm) | 4.94 |
| f3(mm) | -7.10 | ImgH(mm) | 2.30 |
| f4(mm) | 8.54 | ||
| f5(mm) | -3.93 |
TABLE 3
As can be seen from table 3, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S13 and the effective focal length f of the imaging lens satisfy TTL/f equal to 0.88; f2/f 1-2.12 is satisfied between the focal length f2 of the second lens E2 and the focal length f1 of the first lens E1; the effective focal length f of the imaging lens and the focal length f3 of the third lens E3 meet the condition that f/f3 is-0.79; f1 × f2/f5 which is 3.18mm is satisfied between the focal length f1 of the first lens E1, the focal length f2 of the second lens E2 and the focal length f5 of the fifth lens E5; f/f5 ═ 1.43 is satisfied between the effective focal length f of the imaging lens and the focal length f5 of the fifth lens E5; the focal length f3 of the third lens E3 and the focal length f4 of the fourth lens E4 satisfy (f3-f4)/(f3+ f4) — 10.92. In addition, a combined focal length f12 of the first lens E1 and the second lens E2 and a combined focal length f45 of the fourth lens E4 and the fifth lens E5 satisfy f12/f 45-0.48.
In the present embodiment, the maximum half field angle HFOV of the imaging lens is 22.2 °.
Fig. 2A shows on-axis chromatic aberration curves of the imaging lens of embodiment 1, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the imaging lens. Fig. 2B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the imaging lens of embodiment 1, which represents distortion magnitude values in the case of different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens. As can be seen from fig. 2A to 2D, the imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An 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, a description of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object-side surface S1 and an image-side surface S2; a second lens E2 having an object-side surface S3 and an image-side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side surface S11 and an image side surface S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the object side and the first lens E1 to improve the imaging quality. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 2. Table 5 shows the high-order coefficient of each aspherical mirror surface in example 2. Table 6 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 of example 2. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | Go to nothing | -0.3904 | ||
| S1 | Aspherical surface | 1.4626 | 0.6513 | 1.546/56.11 | -1.0179 |
| S2 | Aspherical surface | 29.7850 | 0.1769 | -13.8097 | |
| S3 | Aspherical surface | -6.5233 | 0.2500 | 1.666/20.41 | 34.2296 |
| S4 | Aspherical surface | 12.9149 | 0.8647 | -25.3234 | |
| S5 | Aspherical surface | 9.6370 | 0.3520 | 1.546/56.11 | -23.8512 |
| S6 | Aspherical surface | 4.1419 | 0.5914 | -27.9493 | |
| S7 | Aspherical surface | 40.3700 | 0.3640 | 1.546/56.11 | 39.6109 |
| S8 | Aspherical surface | 7.4313 | 0.1816 | -22.6831 | |
| S9 | Aspherical surface | -13.4467 | 0.4223 | 1.666/20.41 | 0.1163 |
| S10 | Aspherical surface | -1132.5420 | 0.0300 | -99.0000 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517/64.17 | |
| S12 | Spherical surface | All-round | 1.0276 | ||
| S13 | Spherical surface | All-round |
TABLE 4
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | -2.2800E-02 | 2.1490E-01 | -7.2780E-01 | 1.4601E+00 | -.6958E+00 | 1.0647E+00 | -2.8110E-01 | 4.0500E-02 |
| S2 | 7.5536E-03 | -8.9100E-02 | 4.4440E-01 | -1.2267E+00 | 1.9560E+00 | -1.8087E+00 | 9.0420E-01 | -1.9140E-01 |
| S3 | -1.6660E-04 | -1.4510E-01 | 8.6700E-01 | -2.6942E+00 | 4.8760E+00 | -5.0892E+00 | 2.8505E+00 | -6.6490E-01 |
| S4 | 1.0700E-02 | -1.0380E-01 | 7.1790E-01 | -2.5050E+00 | 5.1778E+00 | -6.1968E+00 | 3.9910E+00 | -1.0784E+00 |
| S5 | -3.4500E-02 | -2.8420E-01 | 1.7139E+00 | -6.8422E+00 | 1.6812E+01 | -2.5282E+01 | 2.1028E+01 | -7.4561E+00 |
| S6 | -3.6890E-03 | -2.3400E-02 | 8.8700E-02 | 9.0900E-02 | -5.9980E-01 | 9.1080E-01 | -6.0440E-01 | 1.4290E-01 |
| S7 | -8.9030E-03 | -1.8640E-01 | 3.8060E-01 | -5.7860E-01 | 5.6240E-01 | -3.1810E-01 | 9.6500E-02 | -1.2200E-02 |
| S8 | 4.1000E-02 | -2.2380E-01 | 4.0050E-01 | -4.9000E-01 | 3.7670E-01 | -1.7030E-01 | 4.1400E-02 | -4.1950E-03 |
| S9 | -4.3700E-02 | 8.1500E-02 | -1.0400E-02 | -3.9500E-02 | 3.7500E-02 | -1.5500E-02 | 3.1998E-03 | -2.6710E-04 |
| S10 | -1.8840E-01 | 2.1320E-01 | -1.7170E-01 | 9.2400E-02 | -3.2000E-02 | 6.5775E-03 | -6.7700E-04 | 2.2985E-05 |
TABLE 5
| f1(mm) | 2.79 | f(mm) | 5.60 |
| f2(mm) | -6.47 | TTL(mm) | 5.12 |
| f3(mm) | -13.61 | ImgH(mm) | 2.26 |
| f4(mm) | -16.75 | ||
| f5(mm) | -20.42 |
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 4B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the imaging lens of embodiment 2, which represents distortion magnitude values in the case of different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 4A to 4D, the imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An 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 imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object side surface S1 and an image side surface S2; a second lens E2 having an object side surface S3 and an image side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side S11 and an image side S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the second lens E2 and the third lens E3 to improve the imaging quality. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 3. Table 8 shows the high-order coefficient of each aspherical mirror surface in example 3. Table 9 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 of example 3. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | Go to nothing | All-round | ||
| S1 | Aspherical surface | 1.5175 | 0.9164 | 1.546/56.11 | -0.5586 |
| S2 | Aspherical surface | -3.7931 | 0.0324 | -63.8779 | |
| S3 | Aspherical surface | -11.1162 | 0.2350 | 1.666/20.41 | 13.5275 |
| S4 | Aspherical surface | 3.1362 | 0.1294 | -22.9991 | |
| STO | Spherical surface | All-round | 0.8023 | 0.0000 | |
| S5 | Aspherical surface | -48.7511 | 0.2350 | 1.546/56.11 | -94.4854 |
| S6 | Aspherical surface | 3.3101 | 0.4949 | -43.5357 | |
| S7 | Aspherical surface | -5.7621 | 0.4954 | 1.666/20.41 | 15.4631 |
| S8 | Aspherical surface | -3.8242 | 0.3282 | -6.7984 | |
| S9 | Aspherical surface | -3.7906 | 0.4591 | 1.546/56.11 | -11.1457 |
| S10 | Spherical surface | -65.5878 | 0.3551 | 89.0690 | |
| S11 | Spherical surface | Go to nothing | 0.2127 | 1.517/64.17 | |
| S12 | Spherical surface | Go to nothing | 0.2543 | ||
| S13 | Spherical surface | Go to nothing |
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.6413E-02 | -7.1098E-03 | 4.9867E-02 | -1.4407E-01 | 2.5274E-01 | -2.7675E-01 | 1.8306E-01 | -6.7468E-02 | 1.0457E-02 |
| S2 | 2.0415E-02 | -1.4457E-01 | 5.8614E-01 | -1.2963E+00 | 1.7518E+00 | -1.4944E+00 | 7.8119E-01 | -2.2760E-01 | 2.8240E-02 |
| S3 | 1.1783E-02 | -2.2414E-01 | 9.3574E-01 | -1.8655E+00 | 2.0681E+00 | -1.1038E+00 | 8.1496E-03 | 2.6523E-01 | -8.5260E-02 |
| S4 | -7.0200E-02 | 1.8040E-01 | -1.1189E+00 | 6.2346E+00 | -2.0284E+01 | 3.9070E+01 | -4.4112E+01 | 2.6922E+01 | -6.8324E+00 |
| S5 | -4.6825E-01 | -4.7055E-01 | 8.1064E+00 | -5.3289E+01 | 2.1570E+02 | -5.4754E+02 | 8.4835E+02 | -7.3222E+02 | 2.6905E+02 |
| S6 | -2.9235E-01 | -9.3267E-04 | 1.6951E+00 | -8.1277E+00 | 2.4742E+01 | -4.6733E+01 | 5.3730E+01 | -3.4262E+01 | 9.2031E+00 |
| S7 | -1.1347E-01 | -1.3992E-01 | 3.1407E-01 | -8.1257E-01 | 1.2098E+00 | -1.2427E+00 | 1.0250E+00 | -4.5845E-01 | 5.9978E-02 |
| S8 | -6.7118E-02 | -2.1774E-01 | 7.4704E-01 | -1.5054E+00 | 1.8428E+00 | -1.4618E+00 | 7.3984E-01 | -2.1132E-01 | 2.5195E-02 |
| S9 | -1.0773E-01 | -2.4198E-01 | 9.0784E-01 | -1.2717E+00 | 9.4986E-01 | -4.0820E-01 | 1.0119E-01 | -1.3405E-02 | 7.2806E-04 |
| S10 | -1.2600E-01 | -3.5839E-02 | 1.7777E-01 | -1.6847E-01 | 6.9866E-02 | -9.0549E-03 | -2.8798E-03 | 1.1489E-03 | -1.1506E-04 |
TABLE 8
| f1(mm) | 2.11 | f(mm) | 5.40 |
| f2(mm) | -4.71 | TTL(mm) | 4.95 |
| f3(mm) | -5.67 | ImgH(mm) | 2.40 |
| f4(mm) | 15.48 | ||
| f5(mm) | -7.39 |
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the imaging lens of embodiment 3, which represents distortion magnitude values in the case of different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 6A to 6D, the imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An 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 imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object-side surface S1 and an image-side surface S2; a second lens E2 having an object side surface S3 and an image side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object-side surface S7 and an image-side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side surface S11 and an image side surface S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the object side and the first lens E1 to improve the imaging quality. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 4. Table 11 shows the high-order coefficient of each aspherical mirror surface in example 4. Table 12 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 of example 4. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 10
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 |
| S1 | 4.0917E-02 | -1.9082E-02 | 1.2767E-01 | -3.8230E-01 | 6.4939E-01 | -6.4031E-01 | 3.3494E-01 | -7.4079E-02 |
| S2 | -7.6548E-02 | 3.1787E-02 | 1.3601E-01 | -4.9397E-01 | 5.2300E-01 | -2.5017E-01 | 5.6643E-02 | -4.9478E-03 |
| S3 | -1.1890E-01 | 3.4086E-01 | -4.2288E-01 | 7.7400E-01 | -2.4148E+00 | 3.8964E+00 | -2.8197E+00 | 7.5576E-01 |
| S4 | 1.2235E-02 | 6.2866E-01 | -2.9905E+00 | 1.3955E+01 | -4.1134E+01 | 7.0555E+01 | -6.4654E+01 | 2.4743E+01 |
| S5 | -1.1875E-01 | -1.4006E-01 | 1.3481E+00 | -4.4313E+00 | 9.9481E+00 | -1.3810E+01 | 1.0286E+01 | -3.1576E+00 |
| S6 | -1.1459E-01 | -8.5350E-02 | 1.0017E+00 | -2.6063E+00 | 4.9953E+00 | -5.9648E+00 | 3.7450E+00 | -9.5364E-01 |
| S7 | 1.3444E-01 | -2.0077E+00 | 3.3802E+00 | -2.6534E+00 | 1.1909E+00 | -3.4634E-01 | 7.3159E-02 | -9.1541E-03 |
| S8 | 7.5370E-01 | -3.1492E+00 | 5.5603E+00 | -5.7539E+00 | 3.6769E+00 | -1.4172E+00 | 2.9989E-01 | -2.6615E-02 |
| S9 | 2.6012E-01 | -6.6132E-01 | 1.1209E+00 | -1.1444E+00 | 6.9281E-01 | -2.4398E-01 | 4.6269E-02 | -3.6657E-03 |
| S10 | -2.0048E-01 | 1.0326E-01 | 8.6343E-02 | -1.2645E-01 | 5.8179E-02 | -1.1099E-02 | 4.9446E-04 | 5.5441E-05 |
TABLE 11
| f1(mm) | 2.89 | f(mm) | 5.60 |
| f2(mm) | -4.69 | TTL(mm) | 5.00 |
| f3(mm) | -687.47 | ImgH(mm) | 2.26 |
| f4(mm) | -126.95 | ||
| f5(mm) | -7.17 |
TABLE 12
Fig. 8A shows on-axis chromatic aberration curves of the imaging lens of embodiment 4, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the imaging lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the imaging lens of embodiment 4, which represents distortion magnitude values in the case of different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 8A to 8D, the imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An 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 diagram of an imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object side surface S1 and an image side surface S2; a second lens E2 having an object side surface S3 and an image side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side surface S11 and an image side surface S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the second lens E2 and the third lens E3 to improve the imaging quality. The light from the object passes through the respective surfaces S1 to S12 in order and is finally imaged on the imaging surface S13.
Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 5. Table 14 shows the high-order coefficient of each aspherical mirror surface in example 5. Table 15 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 in example 5. Wherein each aspherical surface type can be defined by formula (1) given in embodiment 1 above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.5324E-02 | -6.1635E-03 | 3.5694E-02 | -8.8750E-02 | 1.3528E-01 | -1.3032E-01 | 7.6610E-02 | -2.5634E-02 | 3.6612E-03 |
| S2 | 3.9700E-03 | -2.8207E-02 | 1.5623E-01 | -3.6247E-01 | 4.7349E-01 | -3.8490E-01 | 1.9328E-01 | -5.5263E-02 | 6.9572E-03 |
| S3 | -5.7449E-03 | -1.0044E-01 | 5.2359E-01 | -9.2786E-01 | 3.1155E-01 | 1.5597E+00 | -2.7985E+00 | 1.9755E+00 | -5.2873E-01 |
| S4 | -5.7335E-02 | 1.3575E-01 | -1.0082E+00 | 6.6445E+00 | -2.4436E+01 | 5.2291E+01 | -6.5128E+01 | 4.3706E+01 | -1.2172E+01 |
| S5 | -4.5665E-01 | -4.8836E-01 | 7.8199E+00 | -5.2970E+01 | 2.2376E+02 | -5.9253E+02 | 9.5621E+02 | -8.5800E+02 | 3.2725E+02 |
| S6 | -2.9206E-01 | -5.2057E-02 | 1.3304E+00 | -5.2741E+00 | 1.5098E+01 | -2.7298E+01 | 2.9851E+01 | -1.7792E+01 | 4.3207E+00 |
| S7 | -1.1606E-01 | 1.9581E-01 | -1.5513E+00 | 4.9322E+00 | -9.7733E+00 | 1.2608E+01 | -1.0189E+01 | 4.7051E+00 | -9.4788E-01 |
| S8 | -1.2630E-01 | 3.8321E-01 | -1.2964E+00 | 2.2242E+00 | -2.2816E+00 | 1.4679E+00 | -5.9148E-01 | 1.4079E-01 | -1.5512E-02 |
| S9 | -2.8286E-01 | 9.3346E-01 | -2.2525E+00 | 3.2091E+00 | -2.7697E+00 | 1.4671E+00 | -4.6549E-01 | 8.1220E-02 | -6.0015E-03 |
| S10 | -2.1864E-01 | 4.4156E-01 | -7.7441E-01 | 8.5727E-01 | -5.9758E-01 | 2.6332E-01 | -7.1573E-02 | 1.0988E-02 | -7.2909E-04 |
TABLE 14
| f1(mm) | 2.17 | f(mm) | 5.29 |
| f2(mm) | -4.66 | TTL(mm) | 4.95 |
| f3(mm) | -6.88 | ImgH(mm) | 2.37 |
| f4(mm) | 9.11 | ||
| f5(mm) | -5.92 |
Watch 15
Fig. 10A shows on-axis chromatic aberration curves of the imaging lens of embodiment 5, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the imaging lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the imaging lens of embodiment 5, which represents distortion magnitude values in the case of different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 10A to 10D, the imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An 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 configuration diagram of an imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object side surface S1 and an image side surface S2; a second lens E2 having an object-side surface S3 and an image-side surface S4; a third lens E3 having an object side surface S5 and an image side surface S6; a fourth lens E4 having an object-side surface S7 and an image-side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side surface S11 and an image side surface S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the object side and the first lens E1 to improve the imaging quality. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 6. Table 17 shows the high-order coefficient of each aspherical mirror surface in example 6. Table 18 shows focal lengths f1 to f5 of the respective lenses, effective focal length f of the imaging lens, on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 of example 6. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | Go to nothing | Go to nothing | ||
| STO | Spherical surface | Go to nothing | -0.3690 | ||
| S1 | Aspherical surface | 1.4431 | 0.6475 | 1.546/56.11 | -2.2182 |
| S2 | Aspherical surface | 32.4666 | 0.0248 | 99.0000 | |
| S3 | Aspherical surface | -166.2255 | 0.2500 | 1.666/20.41 | -35.4614 |
| S4 | Aspherical surface | 5.9927 | 0.8914 | -97.2571 | |
| S5 | Aspherical surface | -8.1358 | 0.2500 | 1.546/56.11 | -99.0000 |
| S6 | Aspherical surface | 9.6113 | 0.6400 | -99.0000 | |
| S7 | Aspherical surface | -4.5129 | 0.3935 | 1.666/20.41 | -99.0000 |
| S8 | Aspherical surface | -3.1487 | 0.5638 | 5.1796 | |
| S9 | Aspherical surface | -2.3519 | 0.4249 | 1.546/56.11 | -1.2830 |
| S10 | Aspherical surface | All-round | 0.0601 | 99.0020 | |
| S11 | Spherical surface | All-round | 0.2113 | 1.517/64.17 | |
| S12 | Spherical surface | All-round | 0.6292 | ||
| S13 | Spherical surface | All-round |
TABLE 16
TABLE 17
| f1(mm) | 2.75 | f(mm) | 5.56 |
| f2(mm) | -8.67 | TTL(mm) | 4.99 |
| f3(mm) | -8.03 | ImgH(mm) | 2.30 |
| f4(mm) | 14.01 | ||
| f5(mm) | -4.31 |
Watch 18
Fig. 12A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 12B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the imaging lens of embodiment 6, which represents distortion magnitude values in the case of different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens. As can be seen from fig. 12A to 12D, the imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An 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 imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object side surface S1 and an image side surface S2; a second lens E2 having an object-side surface S3 and an image-side surface S4; a third lens E3 having an object-side surface S5 and an image-side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object side surface S9 and an image side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side surface S11 and an image side surface S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the object side and the first lens E1 to improve the imaging quality. The light from the object passes through the respective surfaces S1 to S12 in order and is finally imaged on the imaging surface S13.
Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 7. Table 20 shows the high-order coefficient of each aspherical mirror surface in example 7. Table 21 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 to the imaging surface S13 of the first lens E1, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S13 in example 7. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | Go to nothing | ||
| STO | Spherical surface | Go to nothing | -0.3693 | ||
| S1 | Aspherical surface | 1.4417 | 0.6490 | 1.546/56.11 | -2.5422 |
| S2 | Aspherical surface | 26.7691 | 0.0230 | 47.7927 | |
| S3 | Aspherical surface | -166.2255 | 0.2500 | 1.666/20.41 | -99.0000 |
| S4 | Aspherical surface | 6.2927 | 0.8954 | -92.1283 | |
| S5 | Aspherical surface | -9.4785 | 0.2500 | 1.546/56.11 | -99.0000 |
| S6 | Aspherical surface | 6.8416 | 0.5748 | -99.0000 | |
| S7 | Aspherical surface | -4.5431 | 0.3881 | 1.666/20.41 | -99.0000 |
| S8 | Aspherical surface | -3.1861 | 0.6308 | 5.2036 | |
| S9 | Aspherical surface | -2.5496 | 0.4249 | 1.546/56.11 | -2.7246 |
| S10 | Aspherical surface | -1481.4587 | 0.0603 | 99.0020 | |
| S11 | Spherical surface | Go to nothing | 0.2113 | 1.517/64.17 | |
| S12 | Spherical surface | Go to nothing | 0.6285 | ||
| S13 | Spherical surface | Go to nothing |
Watch 19
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.0065E-01 | -4.7822E-02 | 1.8232E-01 | -4.8712E-01 | 7.8410E-01 | -7.8743E-01 | 4.5032E-01 | -1.1768E-01 | 0.0000E+00 |
| S2 | -2.5929E-01 | 8.4747E-01 | -5.0696E-01 | -4.4616E+00 | 1.3381E+01 | -1.6720E+01 | 1.0053E+01 | -2.3892E+00 | 0.0000E+00 |
| S3 | -1.7193E-01 | 8.0602E-01 | -5.9759E-01 | -4.0239E+00 | 1.2676E+01 | -1.5970E+01 | 9.4943E+00 | -2.1822E+00 | 0.0000E+00 |
| S4 | 1.1223E-01 | 1.3678E-01 | -6.3479E-01 | 2.1294E+00 | -5.9273E+00 | 1.1249E+01 | -1.1531E+01 | 4.7386E+00 | 0.0000E+00 |
| S5 | 2.2976E-02 | 1.8975E-02 | -6.0274E-01 | 2.8138E+00 | -7.4188E+00 | 1.1437E+01 | -9.4757E+00 | 3.1889E+00 | 0.0000E+00 |
| S6 | 1.0113E-01 | 9.0249E-02 | -1.0792E+00 | 4.1697E+00 | -9.1879E+00 | 1.2106E+01 | -8.6684E+00 | 2.6001E+00 | 0.0000E+00 |
| S7 | -2.5328E-01 | 6.5383E-01 | -3.1363E+00 | 1.0116E+01 | -2.3285E+01 | 3.5397E+01 | -3.3659E+01 | 1.7893E+01 | -3.9725E+00 |
| S8 | -7.3773E-02 | 4.0579E-01 | -1.5608E+00 | 3.5152E+00 | -5.2498E+00 | 5.1034E+00 | -3.1079E+00 | 1.0760E+00 | -1.5991E-01 |
| S9 | -3.3439E-01 | 1.0758E+00 | -2.2513E+00 | 3.0471E+00 | -2.6531E+00 | 1.4667E+00 | -4.9608E-01 | 9.3581E-02 | -7.5463E-03 |
| S10 | -3.6417E-01 | 7.4434E-01 | -1.1087E+00 | 1.0635E+00 | -6.5485E-01 | 2.5695E-01 | -6.2111E-02 | 8.4360E-03 | -4.9316E-04 |
Watch 20
TABLE 21
Fig. 14A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the imaging lens of embodiment 7, which represents distortion magnitude values in the case of different angles of view. Fig. 14D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 14A to 14D, the imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 7 of the present application.
As shown in fig. 15, the imaging lens includes five lenses E1-E5 arranged in order from the object side to the imaging side along the optical axis. A first lens E1 having an object-side surface S1 and an image-side surface S2; a second lens E2 having an object-side surface S3 and an image-side surface S4; a third lens E3 having an object-side surface S5 and an image-side surface S6; a fourth lens E4 having an object side surface S7 and an image side surface S8; and a fifth lens E5 having an object-side surface S9 and an image-side surface S10. Optionally, the imaging lens may further include a filter E6 having an object side S11 and an image side S12. In the imaging lens of the present embodiment, a stop STO for limiting a light beam may also be provided between, for example, the second lens E2 and the third lens E3 to improve the imaging quality. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the imaging lens in example 8. Table 23 shows the high-order coefficient of each aspherical mirror surface in example 8. Table 24 shows the focal lengths f1 to f5 of the respective lenses, the effective focal length f of the imaging lens, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 in example 8. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| S1 | Aspherical surface | 1.4615 | 0.9066 | 1.546/56.11 | -0.5564 |
| S2 | Aspherical surface | -8.2798 | 0.0584 | -62.5439 | |
| S3 | Aspherical surface | -18.0061 | 0.2350 | 1.666/20.41 | 31.6285 |
| S4 | Aspherical surface | 3.7552 | 0.1281 | -21.6059 | |
| STO | Spherical surface | Go to nothing | 0.7943 | 0.0000 | |
| S5 | Aspherical surface | -187.3800 | 0.2513 | 1.546/56.11 | 99.0000 |
| S6 | Aspherical surface | 3.3911 | 0.4900 | -83.9143 | |
| S7 | Aspherical surface | -5.8340 | 0.6797 | 1.666/20.41 | 7.2908 |
| S8 | Aspherical surface | -3.3391 | 0.2039 | -8.3409 | |
| S9 | Aspherical surface | -3.2455 | 0.3807 | 1.546/56.11 | -11.4036 |
| S10 | Aspherical surface | -30.8919 | 0.3557 | 89.9211 | |
| S11 | Spherical surface | Go to nothing | 0.2106 | 1.517/64.17 | |
| S12 | Spherical surface | Go to nothing | 0.2557 | ||
| S13 | Spherical surface | Go to nothing |
TABLE 22
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.8905E-02 | -9.8823E-03 | 6.4286E-02 | -1.7333E-01 | 2.9271E-01 | -3.1297E-01 | 2.0222E-01 | -7.2620E-02 | 1.0645E-02 |
| S2 | -2.7594E-02 | 1.9051E-01 | -5.8519E-01 | 1.3355E+00 | -2.2266E+00 | 2.4887E+00 | -1.7424E+00 | 6.8481E-01 | -1.1497E-01 |
| S3 | -8.7660E-02 | 3.6810E-01 | -1.0840E+00 | 2.9926E+00 | -6.2030E+00 | 8.6367E+00 | -7.4665E+00 | 3.6007E+00 | -7.3767E-01 |
| S4 | -4.1953E-02 | 3.0292E-01 | -1.5617E+00 | 7.1124E+00 | -2.0167E+01 | 3.3034E+01 | -2.7298E+01 | 6.5057E+00 | 2.6526E+00 |
| S5 | -4.5548E-01 | -1.9325E-01 | 3.6485E+00 | -2.1342E+01 | 7.7867E+01 | -1.8156E+02 | 2.6432E+02 | -2.1825E+02 | 7.7387E+01 |
| S6 | -1.6046E-01 | -6.5932E-01 | 3.5376E+00 | -1.1554E+01 | 2.7212E+01 | -4.3219E+01 | 4.4056E+01 | -2.5843E+01 | 6.5591E+00 |
| S7 | -9.8858E-02 | -4.2485E-02 | -3.7683E-01 | 1.4249E+00 | -3.0263E+00 | 4.0019E+00 | -3.1814E+00 | 1.4354E+00 | -2.8671E-01 |
| S8 | -6.6181E-02 | 4.2388E-02 | -2.9661E-01 | 5.5383E-01 | -5.5267E-01 | 3.2933E-01 | -1.2030E-01 | 2.6364E-02 | -2.7810E-03 |
| S9 | -1.6839E-01 | 3.1101E-01 | -6.9496E-01 | 1.0192E+00 | -8.9221E-01 | 4.6697E-01 | -1.4323E-01 | 2.3781E-02 | -1.6540E-03 |
| S10 | -0.161762925 | 1.9532E-01 | -0.27162823 | 2.8605E-01 | -1.9757E-01 | 8.5845E-02 | -2.2765E-02 | 3.3797E-03 | -2.1530E-04 |
TABLE 23
| f1(mm) | 2.35 | f(mm) | 5.29 |
| f2(mm) | -5.63 | TTL(mm) | 4.95 |
| f3(mm) | -6.10 | ImgH(mm) | 2.36 |
| f4(mm) | 10.56 | ||
| f5(mm) | -6.68 |
Fig. 16A shows on-axis chromatic aberration curves of an imaging lens of embodiment 8, which represent deviation of convergence focuses of light rays of different wavelengths after passing through the imaging lens. Fig. 16B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the imaging lens of embodiment 8, which represents distortion magnitude values in the case of different angles of view. Fig. 16D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from fig. 16A to 16D, the imaging lens according to embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 25 below.
| Conditional expression (A) example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| HFOV(°) | 22.2 | 22.3 | 23.8 | 22.3 | 23.9 | 22.3 | 22.3 | 23.9 |
| T23/T34 | 1.21 | 1.46 | 1.88 | 1.04 | 1.88 | 1.39 | 1.56 | 1.88 |
| TTL/f | 0.88 | 0.91 | 0.92 | 0.89 | 0.94 | 0.90 | 0.89 | 0.94 |
| f2/f1 | -2.12 | -2.31 | -1.72 | -1.62 | -1.66 | -3.16 | -3.29 | -1.97 |
| f12/f45 | -0.48 | -0.45 | -0.26 | -0.70 | -0.25 | -0.58 | -0.52 | -0.22 |
| f/f3 | -0.79 | -0.41 | -0.95 | -0.01 | -0.77 | -0.69 | -0.77 | -0.87 |
| |V4-V5| | 35.70 | 35.70 | 35.70 | 35.70 | 35.70 | 35.70 | 35.70 | 35.70 |
| f1*f2/f5(mm) | 3.18 | 0.89 | 1.04 | 1.89 | 1.37 | 5.53 | 5.38 | 1.64 |
| (R1+R4)/(R1-R4) | -2.25 | -1.26 | -2.88 | -2.47 | -2.97 | -1.63 | -1.59 | -2.27 |
| f/f5 | -1.43 | -0.27 | -0.73 | -0.78 | -0.93 | -1.29 | -1.19 | -0.79 |
| (f3-f4)/(f3+f4) | -10.92 | -0.10 | -2.16 | 0.69 | -7.19 | -3.68 | -3.03 | -3.73 |
| R1/R2 | -0.10 | 0.05 | -0.40 | 0.11 | -0.38 | 0.04 | 0.05 | -0.18 |
TABLE 25
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the imaging lens described above.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (32)
1. The imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens,
it is characterized in that the preparation method is characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces;
the third lens has a negative power;
the fourth lens has positive focal power or negative focal power;
the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface or a plane;
an air interval T23 of the second lens and the third lens on the optical axis and an air interval T34 of the third lens and the fourth lens on the optical axis satisfy 1.0 ≦ T23/T34< 2.0;
the coefficient of dispersion V4 of the fourth lens and the coefficient of dispersion V5 of the fifth lens meet the value of 28 ≦ V4-V5 |;
the number of lenses having a focal power in the imaging lens is five; and
at least one of the object side surface of the first lens and the image side surface of the fifth lens is an aspheric mirror surface.
2. The imaging lens according to claim 1, having a maximum half field angle HFOV, wherein the maximum half field angle HFOV satisfies HFOV ≦ 25 °.
3. The imaging lens assembly according to claim 1 or 2, wherein an on-axis distance TTL from an object side surface of the first lens element to an imaging surface of the imaging lens assembly and an effective focal length f of the imaging lens assembly satisfy TTL/f ≦ 1.0.
4. Imaging lens according to claim 1 or 2, characterized in that the focal length f2 of the second lens and the focal length f1 of the first lens satisfy-4 ≦ f2/f1 ≦ -1.
5. The imaging lens according to claim 1 or 2, characterized in that a combined focal length f12 of the first lens and the second lens and a combined focal length f45 of the fourth lens and the fifth lens satisfy-1 ≦ f12/f45 ≦ 0.
6. The imaging lens according to claim 1 or 2, characterized in that an effective focal length f of the imaging lens and a focal length f3 of the third lens satisfy-1 ≦ f/f3 ≦ 0.
7. The imaging lens according to claim 1 or 2, characterized in that the focal length f1 of the first lens, the focal length f2 of the second lens and the focal length f5 of the fifth lens satisfy 0mm ≦ f1 ≦ f2/f5 ≦ 6 mm.
8. An imaging lens according to claim 1 or 2, characterized in that a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R4 of the image-side surface of the second lens satisfy-3 ≦ (R1+ R4)/(R1-R4) ≦ -1.
9. The imaging lens according to claim 1 or 2, characterized in that an effective focal length f of the imaging lens and a focal length f5 of the fifth lens satisfy-1.5 ≦ f/f5 ≦ 0.
10. The imaging lens according to claim 1 or 2, characterized in that a focal length f3 of the third lens and a focal length f4 of the fourth lens satisfy-11 ≦ (f3-f4)/(f3+ f4) ≦ 1.
11. The imaging lens according to claim 1 or 2, characterized in that a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R2 of the image side surface of the first lens satisfy-0.5 ≦ R1/R2 ≦ 0.2.
12. The imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens,
it is characterized in that the preparation method is characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces;
the third lens has a negative optical power;
the fourth lens has positive focal power or negative focal power;
the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface or a plane;
the combined focal length f12 of the first lens and the second lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy-1 ≦ f12/f45 ≦ 0;
the coefficient of dispersion V4 of the fourth lens and the coefficient of dispersion V5 of the fifth lens meet | V4-V5| ≦ 28;
the number of lenses having a focal power in the imaging lens is five; and
at least one of the object side surface of the first lens and the image side surface of the fifth lens is an aspheric mirror surface.
13. The imaging lens system of claim 12, having an effective focal length f, wherein an on-axis distance TTL from an object-side surface of the first lens element to an imaging surface of the imaging lens system and the effective focal length f of the imaging lens system satisfy TTL/f ≦ 1.0.
14. The imaging lens according to claim 13, wherein the effective focal length f and a focal length f5 of the fifth lens satisfy-1.5 ≦ f/f5 ≦ 0.
15. The imaging lens of claim 13, wherein the effective focal length f and the focal length f3 of the third lens satisfy-1 ≦ f/f3 ≦ 0.
16. The imaging lens of claim 13, wherein the focal length f2 of the second lens and the focal length f1 of the first lens satisfy-4 ≦ f2/f1 ≦ -1.
17. The imaging lens of claim 13, wherein the focal length f1 of the first lens, the focal length f2 of the second lens, and the focal length f5 of the fifth lens satisfy 0mm ≦ f1 × f2/f5 ≦ 6 mm.
18. The imaging lens of claim 13, wherein the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy-11 ≦ (f3-f4)/(f3+ f4) ≦ 1.
19. The imaging lens according to claim 13, characterized in that an air interval T23 of the second lens and the third lens on the optical axis satisfies 1.0 ≦ T23/T34<2.0 with an air interval T34 of the third lens and the fourth lens on the optical axis.
20. The imaging lens of claim 13, wherein a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R4 of the image side surface of the second lens satisfy-3 ≦ (R1+ R4)/(R1-R4) ≦ 1.
21. The imaging lens of claim 13, wherein a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R2 of the image-side surface of the first lens satisfy-0.5 ≦ R1/R2 ≦ 0.2.
22. The imaging lens according to any one of claims 14 to 21, having a maximum half field angle HFOV, wherein the HFOV satisfies HFOV ≦ 25 °.
23. The imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens,
it is characterized in that the preparation method is characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has negative focal power, and the object side surface and the image side surface of the second lens are both concave surfaces;
the third lens has a negative power;
the fourth lens has positive power or negative power;
the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface or a plane;
the focal length f1 of the first lens, the focal length f2 of the second lens and the focal length f5 of the fifth lens meet the condition that 0mm is not more than f1 x f2/f5 is not more than 6 mm;
the coefficient of dispersion V4 of the fourth lens and the coefficient of dispersion V5 of the fifth lens meet the value of 28 ≦ V4-V5 |;
the number of lenses having a focal power in the imaging lens is five; and
at least one of the object side surface of the first lens and the image side surface of the fifth lens is an aspheric mirror surface.
24. The imaging lens of claim 23, wherein a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R2 of the image side surface of the first lens satisfy-0.5 ≦ R1/R2 ≦ 0.2.
25. An imaging lens according to claim 24, characterized in that a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R4 of the image-side surface of the second lens satisfy-3 ≦ (R1+ R4)/(R1-R4) ≦ 1.
26. The imaging lens as set forth in claim 25, having a maximum half field angle HFOV, wherein the maximum half field angle HFOV satisfies HFOV ≦ 25 °.
27. The imaging lens of claim 26, having an effective focal length f, wherein the effective focal length f and the focal length f3 of the third lens satisfy-1 ≦ f/f3 ≦ 0.
28. The imaging lens according to claim 27, wherein the effective focal length f and a focal length f5 of the fifth lens satisfy-1.5 ≦ f/f5 ≦ 0.
29. The imaging lens of claim 28, wherein the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy-11 ≦ (f3-f4)/(f3+ f4) ≦ 1.
30. The imaging lens of claim 29, wherein the focal length f2 of the second lens and the focal length f1 of the first lens satisfy-4 ≦ f2/f1 ≦ -1.
31. The imaging lens assembly according to claim 30, wherein an on-axis distance TTL from an object side surface of the first lens element to an image plane of the imaging lens assembly and an effective focal length f of the imaging lens assembly satisfy TTL/f ≦ 1.0.
32. The imaging lens of claim 31, wherein a combined focal length f12 of the first lens and the second lens and a combined focal length f45 of the fourth lens and the fifth lens satisfy-1 ≦ f12/f45 ≦ 0.
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| WO2018227971A1 (en) * | 2017-06-13 | 2018-12-20 | 浙江舜宇光学有限公司 | Camera lens |
| TWI629503B (en) | 2017-06-14 | 2018-07-11 | 大立光電股份有限公司 | Image capturing lens system, image capturing unit and electronic device |
| WO2019029232A1 (en) | 2017-08-07 | 2019-02-14 | 浙江舜宇光学有限公司 | Optical imaging camera lens |
| WO2019037413A1 (en) * | 2017-08-21 | 2019-02-28 | 浙江舜宇光学有限公司 | Optical imaging camera |
| CN107608053B (en) * | 2017-08-30 | 2020-02-21 | 华为技术有限公司 | Lens system, image shooting device and equipment |
| CN109212720B (en) * | 2018-06-01 | 2021-01-26 | 浙江舜宇光学有限公司 | Imaging lens |
| CN108398770B (en) * | 2018-06-05 | 2021-01-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN109725407A (en) * | 2019-03-05 | 2019-05-07 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN112230389B (en) * | 2020-10-31 | 2022-03-01 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN115061326B (en) * | 2022-08-22 | 2022-11-11 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7864454B1 (en) * | 2009-08-11 | 2011-01-04 | Largan Precision Co., Ltd. | Imaging lens system |
| CN102798962A (en) * | 2011-05-26 | 2012-11-28 | 大立光电股份有限公司 | Optical image lens assembly |
| CN103309021A (en) * | 2012-03-13 | 2013-09-18 | 索尼公司 | Imaging lens and imaging apparatus |
| CN203825277U (en) * | 2013-04-27 | 2014-09-10 | 株式会社光学逻辑 | Camera lens |
| CN105022144A (en) * | 2014-04-29 | 2015-11-04 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and mobile terminal |
| JP6118447B1 (en) * | 2016-09-30 | 2017-04-19 | エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． | Imaging lens |
| CN207148394U (en) * | 2017-05-26 | 2018-03-27 | 浙江舜宇光学有限公司 | Imaging lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI545365B (en) * | 2015-02-17 | 2016-08-11 | 大立光電股份有限公司 | Image capturing lens assembly, image capturing device and electronic device |
-
2017
- 2017-05-26 CN CN201710383984.XA patent/CN106990508B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7864454B1 (en) * | 2009-08-11 | 2011-01-04 | Largan Precision Co., Ltd. | Imaging lens system |
| CN102798962A (en) * | 2011-05-26 | 2012-11-28 | 大立光电股份有限公司 | Optical image lens assembly |
| CN103309021A (en) * | 2012-03-13 | 2013-09-18 | 索尼公司 | Imaging lens and imaging apparatus |
| CN203825277U (en) * | 2013-04-27 | 2014-09-10 | 株式会社光学逻辑 | Camera lens |
| CN105022144A (en) * | 2014-04-29 | 2015-11-04 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and mobile terminal |
| JP6118447B1 (en) * | 2016-09-30 | 2017-04-19 | エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． | Imaging lens |
| CN207148394U (en) * | 2017-05-26 | 2018-03-27 | 浙江舜宇光学有限公司 | Imaging lens |
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