CN210720848U - Optical imaging lens - Google Patents
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- CN210720848U CN210720848U CN201921627401.4U CN201921627401U CN210720848U CN 210720848 U CN210720848 U CN 210720848U CN 201921627401 U CN201921627401 U CN 201921627401U CN 210720848 U CN210720848 U CN 210720848U
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Abstract
The application discloses an optical imaging lens, wherein the optical imaging lens comprises a first lens with focal power in order from an object side to an image side along an optical axis; a second lens having a positive optical power; a third lens having a negative optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power; and an eighth lens having a negative optical power; wherein the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: f × TAN (FOV/2) >4.0mm and a total effective focal length f of the optical imaging lens, a center thickness CT7 of the seventh lens on the optical axis, and a center thickness CT8 of the eighth lens on the optical axis satisfy: f/(CT7+ CT8) is not less than 5.0.
Description
Technical Field
The present disclosure relates to an optical imaging lens, and more particularly, to an optical imaging lens including eight lenses.
Background
In recent years, with rapid development of portable electronic products such as smartphones and tablet computers, demands for imaging lenses mounted on portable electronic devices have been increasing. On the one hand, portable electronic products are increasingly being miniaturized and made thinner. On the other hand, an imaging lens mounted on a portable electronic device is required to have high imaging quality even in a dark environment. This requires that the optical imaging lens used in combination meet the requirements of miniaturization and high imaging quality in dark environment. In addition, the conventional imaging lens with a small number of lenses is difficult to realize large image plane characteristics, and cannot well meet the current requirements of people on daily shooting.
SUMMERY OF THE UTILITY MODEL
The present application provides an optical imaging lens applicable to portable electronic products that may solve, at least, or in part, at least one of the above-mentioned disadvantages of the related art.
An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a positive optical power; a third lens having a negative optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power; and an eighth lens having a negative optical power.
In one embodiment, the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: f × TAN (FOV/2) >4.0 mm.
In one embodiment, the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: f/(CT7+ CT8) is not less than 5.0.
In one embodiment, a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on an optical axis and an entrance pupil diameter EPD of the optical imaging lens satisfy: TTL/EPD is less than or equal to 2.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R2 of the image side surface of the first lens satisfy: f/R2> 1.5.
In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: f/R10< -0.5.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: -10< R4/R3< -3.0.
In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object-side surface of the seventh lens, and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: f/R13+ f/R14> 3.5.
In one embodiment, a radius of curvature R15 of the object-side surface of the eighth lens element and a radius of curvature R16 of the image-side surface of the eighth lens element satisfy: 1< R15/R16< 2.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f8 of the eighth lens satisfy: i f/f3-f 8I < 0.5.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy: -5.0< f5/f4< 0.
In one embodiment, the effective focal length f7 of the seventh lens and the combined focal length f12 of the first and second lenses satisfy: 1.5< f7/f12< 5.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f/| f1| is less than or equal to 0.3.
In one embodiment, abbe number V4 of the fourth lens, abbe number V5 of the fifth lens and abbe number V6 of the sixth lens satisfy: 30< (V4+ V5+ V6)/3< 40.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than or equal to 1.5.
The optical imaging lens provided by the application comprises a plurality of lenses, such as a first lens to an eighth lens. The mutual relation between the total effective focal length of the optical imaging lens and the maximum field angle of the optical imaging lens is reasonably set, the focal power and the surface type of each lens are optimized, and the optical imaging lens is reasonably matched with each other, so that the optical imaging lens is miniaturized, light and thin and has a large imaging surface.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 7.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The features, principles, and other aspects of the present application are described in detail below.
An optical imaging lens according to an exemplary embodiment of the present application may include eight lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The eight lenses are arranged in order from an object side to an image side along an optical axis. Each adjacent lens may have an air space therebetween.
In an exemplary embodiment, the first lens may have a positive or negative power, with a convex object-side surface and a concave image-side surface; the second lens can have positive focal power, and the object side surface of the second lens is a convex surface; the third lens has negative focal power, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has positive focal power or negative focal power, and the image side surface of the sixth lens is a convex surface; the seventh lens element has positive focal power, and has a convex object-side surface and a concave image-side surface; and the eighth lens element can have a negative power, and the object-side surface of the eighth lens element is convex and the image-side surface of the eighth lens element is concave. The focal power and the surface type of each lens in the optical system are reasonably matched, so that the aberration of the optical system can be effectively balanced, and the imaging quality is improved.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: f × TAN (FOV/2) >4.0mm, for example, 4.0mm < f × TAN (FOV/2) <6.5 mm. The mutual relation between the total effective focal length of the optical imaging lens and the maximum field angle of the optical imaging lens is reasonably set, and the optical system is favorable for having a larger imaging surface.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy: f/(CT7+ CT8) is not less than 5.0, for example, not less than 5.0 and not more than f/(CT7+ CT8) is not less than 7.0. The central thicknesses of the seventh lens and the eighth lens and the proportional relation between the total effective focal length of the optical imaging lens and the sum of the central thicknesses of the seventh lens and the eighth lens are reasonably set, so that the optical power distribution of the optical imaging lens is balanced, and the optical imaging lens has the characteristics of miniaturization and larger imaging surface.
In an exemplary embodiment, a distance TTL on an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy: TTL/EPD is less than or equal to 2.0, for example, 1.0 is less than or equal to TTL/EPD is less than or equal to 2.0. The proportional relation between the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the entrance pupil diameter of the optical imaging lens is reasonably set, the total length of the optical system is effectively reduced, the miniaturization of the optical system is favorably realized, and the optical imaging lens is convenient to be better suitable for more and more portable electronic products in the market. Meanwhile, the diameter of the entrance pupil of the optical system is increased, the light flux and the relative illumination of the optical system can be improved, and the imaging quality of the optical system under the dark light condition can be improved.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R2 of the image side surface of the first lens satisfy: f/R2>1.5, e.g., 1.5< f/R2 ≦ 2.0. The proportional relation between the total effective focal length of the optical imaging lens and the curvature radius of the image side surface of the first lens is reasonably set, the curvature radius of the image side surface of the first lens is effectively controlled, and the field curvature contribution amount of the first lens is favorably controlled within a reasonable range so as to balance the field curvature amount generated by the rear group of lenses.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy: f/R10< -0.5, e.g., -2.0< f/R10< -0.5. The proportional relation between the total effective focal length of the optical imaging lens and the curvature radius of the image side surface of the fifth lens is reasonably set, so that the on-axis chromatic aberration of the optical system is favorably reduced, and the imaging quality of the optical system is improved.
In an exemplary embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: -10< R4/R3< -3.0, for example, -7< R4/R3< -3. The ratio of the curvature radius of the object side surface of the second lens to the curvature radius of the image side surface of the second lens is set to be within a reasonable numerical range, the shape of the lens of the second lens is effectively controlled, the aberration contribution rate of the second lens is favorably reduced, the aberration related to the aperture zone in the optical system is balanced, and therefore the imaging quality of the optical system is improved.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object-side surface of the seventh lens, and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: f/R13+ f/R14>3.5, e.g., 3.5< f/R13+ f/R14< 6.0. The mutual relation among the total effective focal length of the optical imaging lens, the curvature radius of the object side surface of the seventh lens and the curvature radius of the image side surface of the seventh lens is reasonably set, the curvature radii of the object side surface and the image side surface of the seventh lens are effectively controlled, the contribution rate of the third-order astigmatism of the seventh lens is favorably reduced, the third-order astigmatism generated by the seventh lens is controlled within a reasonable range, and the lens has high efficiency performance under different distances.
In an exemplary embodiment, a radius of curvature R15 of the object-side surface of the eighth lens and a radius of curvature R16 of the image-side surface of the eighth lens satisfy: 1< R15/R16< 2. The proportional relation of the curvature radius of the object side surface of the eighth lens and the curvature radius of the image side surface of the eighth lens is reasonably set, the shape of the lens of the eighth lens is effectively controlled, the primary light angle of an incident optical system is favorably reduced, a chip can be conveniently matched, and the optical distortion of the system is reduced.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f8 of the eighth lens satisfy: i f/f3-f 8I < 0.5. The mutual relation among the total effective focal length of the optical imaging lens, the effective focal length of the third lens and the effective focal length of the eighth lens is reasonably set, and the reasonable distribution of the focal power of the optical imaging lens is effectively controlled, so that the focal power is prevented from being excessively concentrated on the second lens and the seventh lens, the imaging quality of an optical system is favorably improved, the system sensitivity is reduced, and the miniaturization of the lens is favorably realized.
In an exemplary embodiment, the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy: -5.0< f5/f4< 0. The proportional relation between the effective focal length of the fifth lens and the effective focal length of the fourth lens is reasonably set, so that the size of the optical system is favorably reduced, the miniaturization of the optical system is realized, the reasonable distribution of the focal power of the system is favorably realized, and the excessive concentration of the focal power is avoided. Meanwhile, the fifth lens and the fourth lens are matched with the first three lenses to better correct the aberration of the optical system.
In an exemplary embodiment, the effective focal length f7 of the seventh lens and the combined focal length f12 of the first and second lenses satisfy: 1.5< f7/f12< 5.0. The proportional relation between the effective focal length of the seventh lens and the combined focal length of the first lens and the second lens is reasonably set, so that the sensitivity of the front group lens is favorably reduced, the too tight tolerance requirement is avoided, and the astigmatism, the coma aberration and the like caused by the front group lens are favorably eliminated, so that the imaging quality of an optical system is improved, and the optical system has better image resolving power.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f/| f1| is less than or equal to 0.3. The proportional relation between the total effective focal length of the optical imaging lens and the absolute value of the effective focal length of the first lens is reasonably set, so that the optical imaging lens is beneficial to slowing down the deflection of light rays in the first lens, reducing the sensitivity of the first lens and reducing the spherical aberration generated by the first lens.
In an exemplary embodiment, the abbe number V4 of the fourth lens, the abbe number V5 of the fifth lens, and the abbe number V6 of the sixth lens satisfy: 30< (V4+ V5+ V6)/3< 40. The average Abbe number of the three lenses is set within a reasonable numerical range, so that the dispersion of an optical system is favorably reduced.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD ≦ 1.5, e.g., 1.0< f/EPD ≦ 1.5. The proportional relation between the total effective focal length of the optical imaging lens and the entrance pupil diameter of the optical imaging lens is reasonably set, so that the optical system has a large image surface, a small F number and a large aperture, and the optical system also has good imaging quality in a dark environment.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be 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 on the imaging surface.
The optical imaging lens according to the above embodiment of the present application may adopt a plurality of lenses, for example, the above eight lenses, and by reasonably configuring each lens, the light converging capability of the lens is improved, the resolution and contrast of the lens are enhanced, and the condition that the lens is dazzled in a dark environment is improved. The optical imaging lens with the large aperture in the application is easy to obtain the shooting effects of small depth of field, background blurring and high shutter speed when shooting in a dark environment.
In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspheric mirror surface, i.e., at least one of the object side surface of the first lens to the image side surface of the eighth lens is an aspheric mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens has an object-side surface and an image-side surface which are aspheric mirror surfaces.
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 optical imaging lens described above.
Exemplary embodiments of the present application also provide an electronic apparatus including the above-described imaging device.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although eight lenses are exemplified in the embodiment, the optical imaging lens is not limited to include eight lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 is a schematic view showing a structure of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 1
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.47mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 7.28mm, and the maximum field angle FOV of the optical imaging lens is 77.6 °.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S16 used in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.0246E-02 | -2.4977E-03 | -2.4464E-03 | 3.9406E-03 | -3.5543E-03 | 1.7719E-03 | -4.8005E-04 | 6.7513E-05 | -3.8961E-06 |
| S2 | -4.6466E-02 | -1.6508E-02 | 8.4087E-04 | 9.0566E-03 | -5.9915E-03 | 1.9716E-03 | -3.8128E-04 | 4.2101E-05 | -2.0794E-06 |
| S3 | -1.7542E-02 | -1.3592E-02 | -9.8924E-04 | 7.8563E-03 | -3.3753E-03 | 4.0255E-04 | 6.3342E-05 | -2.0310E-05 | 1.4402E-06 |
| S4 | 1.4705E-02 | -5.2619E-03 | -1.1523E-02 | 1.5069E-02 | -9.2367E-03 | 3.2832E-03 | -6.8897E-04 | 7.9673E-05 | -3.9444E-06 |
| S5 | -5.5062E-02 | 3.0799E-02 | -4.1126E-02 | 3.9846E-02 | -2.5657E-02 | 1.0539E-02 | -2.6605E-03 | 3.8156E-04 | -2.4154E-05 |
| S6 | -7.5889E-02 | 4.4674E-02 | -4.5135E-02 | 4.0547E-02 | -2.7859E-02 | 1.3106E-02 | -3.9502E-03 | 6.8890E-04 | -5.3126E-05 |
| S7 | -1.4028E-02 | 6.7594E-05 | 4.3718E-03 | -1.3998E-02 | 1.7151E-02 | -1.1783E-02 | 4.7369E-03 | -1.0458E-03 | 9.7787E-05 |
| S8 | -1.9571E-02 | -4.5538E-03 | 1.2664E-02 | -2.2059E-02 | 2.0155E-02 | -1.0906E-02 | 3.6259E-03 | -6.8452E-04 | 5.5644E-05 |
| S9 | 2.6723E-02 | -5.8393E-03 | -1.1082E-03 | 6.6956E-03 | -6.9742E-03 | 3.9625E-03 | -1.2336E-03 | 1.9607E-04 | -1.2493E-05 |
| S10 | 7.1194E-03 | 1.4022E-03 | 2.5078E-03 | -1.8493E-03 | 8.0432E-04 | -2.8666E-04 | 8.0320E-05 | -1.2750E-05 | 7.9530E-07 |
| S11 | 5.2175E-03 | -7.9540E-04 | -1.2714E-04 | -2.4000E-04 | 8.5785E-05 | -1.3709E-05 | 4.2305E-07 | 1.4671E-07 | -9.9254E-09 |
| S12 | 5.7061E-20 | -1.4959E-27 | -1.7030E-33 | 1.0161E-39 | -3.2244E-46 | 6.0316E-53 | -6.7718E-60 | 4.1905E-67 | -1.1155E-74 |
| S13 | 7.7939E-03 | -1.3517E-02 | 2.6977E-03 | -5.1965E-04 | -2.8291E-05 | 7.0539E-05 | -1.9279E-05 | 2.1547E-06 | -8.8896E-08 |
| S14 | 1.7346E-02 | -1.1523E-02 | -3.2441E-04 | 1.1702E-03 | -3.6060E-04 | 5.8113E-05 | -5.5195E-06 | 2.9329E-07 | -6.7208E-09 |
| S15 | -6.3528E-02 | 4.2239E-03 | 4.1777E-03 | -1.5394E-03 | 2.6963E-04 | -2.7585E-05 | 1.6736E-06 | -5.5855E-08 | 7.9101E-10 |
| S16 | -5.8748E-02 | 1.4103E-02 | -2.5931E-03 | 2.7812E-04 | -8.0935E-06 | -1.3523E-06 | 1.5558E-07 | -6.5516E-09 | 1.0358E-10 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.47mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 7.28mm, and the maximum field angle FOV of the optical imaging lens is 77.8 °.
Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 3
In embodiment 2, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 4 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 24、A6、A8、 A10、A12、A14、A16、A18And A20。
TABLE 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.47mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 7.28mm, and the maximum field angle FOV of the optical imaging lens is 77.7 °.
Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 5
In embodiment 3, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 6 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 34、A6、A8、 A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.9089E-02 | -8.6510E-04 | -7.1061E-03 | 8.8318E-03 | -6.8434E-03 | 3.0771E-03 | -7.7689E-04 | 1.0382E-04 | -5.7681E-06 |
| S2 | -4.0420E-02 | -1.3523E-02 | 6.1440E-03 | -9.8506E-03 | 9.9765E-03 | -4.6516E-03 | 1.1287E-03 | -1.3961E-04 | 6.9558E-06 |
| S3 | -1.7301E-02 | -1.4230E-02 | 1.7521E-02 | -2.6767E-02 | 2.3422E-02 | -1.0538E-02 | 2.5524E-03 | -3.1934E-04 | 1.6208E-05 |
| S4 | -1.5013E-02 | 4.2543E-02 | -6.8837E-02 | 6.3721E-02 | -3.5036E-02 | 1.1496E-02 | -2.2019E-03 | 2.2632E-04 | -9.6091E-06 |
| S5 | 1.9602E-03 | 3.0161E-02 | -6.9442E-02 | 7.2065E-02 | -4.1594E-02 | 1.3611E-02 | -2.3816E-03 | 1.8128E-04 | -1.9236E-06 |
| S6 | 2.1392E-02 | -3.0257E-02 | -1.0392E-03 | 2.4160E-02 | -2.0108E-02 | 8.0082E-03 | -1.6573E-03 | 1.5215E-04 | -2.7785E-06 |
| S7 | -3.9084E-02 | -8.7321E-03 | -3.3757E-03 | 1.1234E-02 | -4.6398E-03 | -7.9368E-04 | 1.1244E-03 | -3.2332E-04 | 3.1953E-05 |
| S8 | -5.4283E-02 | 2.3930E-02 | -2.5426E-02 | 1.7116E-02 | -4.3740E-03 | -1.3533E-03 | 1.2165E-03 | -3.1083E-04 | 2.8500E-05 |
| S9 | -3.0525E-02 | 2.3985E-02 | -3.3432E-02 | 3.4716E-02 | -2.5523E-02 | 1.2830E-02 | -4.1823E-03 | 7.8533E-04 | -6.3407E-05 |
| S10 | -7.1786E-02 | 5.8072E-02 | -4.2814E-02 | 1.7263E-02 | -1.5999E-03 | -1.3516E-03 | 5.4648E-04 | -8.1382E-05 | 4.4677E-06 |
| S11 | 3.0847E-03 | 7.4330E-02 | -1.0361E-01 | 7.6309E-02 | -3.4434E-02 | 1.0062E-02 | -1.8591E-03 | 1.9634E-04 | -9.0007E-06 |
| S12 | -6.6151E-03 | 4.3776E-02 | -5.4597E-02 | 3.9451E-02 | -1.7586E-02 | 4.9731E-03 | -8.5673E-04 | 8.1279E-05 | -3.2438E-06 |
| S13 | 1.2885E-02 | -1.3214E-02 | 3.7097E-03 | -1.2862E-03 | 3.8273E-04 | -7.3188E-05 | 8.0686E-06 | -4.5633E-07 | 1.0038E-08 |
| S14 | 3.1582E-02 | -1.7158E-02 | 1.8150E-03 | 5.0360E-04 | -2.1318E-04 | 3.5922E-05 | -3.3267E-06 | 1.6522E-07 | -3.4278E-09 |
| S15 | -8.9553E-02 | 2.0911E-02 | -3.5972E-03 | 6.4045E-04 | -9.5468E-05 | 9.5963E-06 | -5.9711E-07 | 2.0964E-08 | -3.1990E-10 |
| S16 | -7.9598E-02 | 2.7547E-02 | -8.0284E-03 | 1.7265E-03 | -2.5758E-04 | 2.5478E-05 | -1.5713E-06 | 5.4208E-08 | -7.9478E-10 |
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.72mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 7.31mm, and the maximum field angle FOV of the optical imaging lens is 83.8 °.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 7
In embodiment 4, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 8 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 44、A6、A8、 A10、A12、A14、A16、A18And A20。
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 7.51mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 9.91mm, and the maximum field angle FOV of the optical imaging lens is 78.0 °.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 9
In embodiment 5, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 10 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 54、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -5.2577E-03 | -1.6537E-04 | -4.0081E-04 | 2.3527E-04 | -9.0598E-05 | 2.0244E-05 | -2.5224E-06 | 1.6551E-07 | -4.5017E-09 |
| S2 | -1.4678E-02 | -1.9287E-03 | -2.2327E-04 | 3.4100E-04 | -8.1106E-05 | 8.7516E-06 | -3.9581E-07 | -1.5630E-09 | 5.0675E-10 |
| S3 | -6.4090E-03 | -1.8961E-03 | 2.4872E-05 | 9.0267E-05 | 4.0872E-05 | -2.0787E-05 | 3.3849E-06 | -2.4968E-07 | 7.1118E-09 |
| S4 | 7.6248E-03 | -3.3860E-03 | 2.0635E-04 | 2.6123E-04 | -1.0335E-04 | 1.8278E-05 | -1.7134E-06 | 8.1764E-08 | -1.5651E-09 |
| S5 | -1.6833E-02 | 3.4172E-03 | -2.6428E-03 | 1.4415E-03 | -4.8116E-04 | 9.8222E-05 | -1.2018E-05 | 8.2184E-07 | -2.4578E-08 |
| S6 | -2.5163E-02 | 7.4406E-03 | -3.6711E-03 | 1.5981E-03 | -5.1572E-04 | 1.1241E-04 | -1.5557E-05 | 1.2425E-06 | -4.3775E-08 |
| S7 | -3.3792E-03 | -3.1396E-03 | 2.7068E-03 | -1.5652E-03 | 5.9104E-04 | -1.4895E-04 | 2.3991E-05 | -2.2566E-06 | 9.4485E-08 |
| S8 | -1.1789E-03 | -5.7255E-03 | 3.0799E-03 | -1.2534E-03 | 3.7688E-04 | -7.8922E-05 | 1.0756E-05 | -8.5818E-07 | 3.0376E-08 |
| S9 | 2.7232E-02 | -1.8396E-02 | 8.5094E-03 | -2.5051E-03 | 4.8780E-04 | -6.1972E-05 | 4.9343E-06 | -2.2344E-07 | 4.3717E-09 |
| S10 | 1.1717E-02 | -9.4321E-03 | 4.5817E-03 | -1.2942E-03 | 2.3445E-04 | -2.7892E-05 | 2.1314E-06 | -9.4782E-08 | 1.8485E-09 |
| S11 | 3.4751E-03 | -3.6386E-04 | -2.3018E-04 | 8.2121E-05 | -2.1463E-05 | 3.6892E-06 | -3.7747E-07 | 2.0680E-08 | -4.6234E-10 |
| S12 | -3.3194E-03 | 2.0361E-03 | -6.2965E-04 | 9.6010E-05 | -9.9261E-06 | 8.8653E-07 | -6.2103E-08 | 2.6135E-09 | -4.6673E-11 |
| S13 | 1.5703E-03 | -1.1704E-03 | -9.7258E-05 | 5.0171E-06 | 3.1127E-06 | -4.0910E-07 | 2.0423E-08 | -4.1364E-10 | 1.8603E-12 |
| S14 | 7.7123E-03 | -2.0889E-03 | -1.2808E-04 | 7.4575E-05 | -1.0048E-05 | 7.1895E-07 | -2.9777E-08 | 6.7284E-10 | -6.4088E-12 |
| S15 | -3.5711E-02 | 4.1905E-03 | -1.8024E-04 | -4.8533E-06 | 1.0104E-06 | -5.4691E-08 | 1.4710E-09 | -1.8986E-11 | 8.2548E-14 |
| S16 | -2.3728E-02 | 3.6620E-03 | -4.5892E-04 | 4.2923E-05 | -3.0334E-06 | 1.5553E-07 | -5.1862E-09 | 9.7226E-11 | -7.6753E-13 |
Watch 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.47mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 7.28mm, and the maximum field angle FOV of the optical imaging lens is 77.7 °.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 11
In embodiment 6, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 12 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 64、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.1865E-02 | -1.6569E-03 | -3.7278E-03 | 5.2156E-03 | -4.2560E-03 | 2.0127E-03 | -5.2877E-04 | 7.2548E-05 | -4.0920E-06 |
| S2 | -4.7607E-02 | -1.3697E-02 | -9.5229E-04 | 8.8253E-03 | -5.2986E-03 | 1.6591E-03 | -3.1220E-04 | 3.3812E-05 | -1.6454E-06 |
| S3 | -1.7707E-02 | -1.1656E-02 | -1.2913E-03 | 5.6296E-03 | -1.3743E-03 | -3.4700E-04 | 2.0149E-04 | -3.1043E-05 | 1.5131E-06 |
| S4 | 1.2582E-02 | -9.2804E-03 | -6.0006E-03 | 1.1155E-02 | -6.8997E-03 | 2.2600E-03 | -4.0668E-04 | 3.6539E-05 | -1.2043E-06 |
| S5 | -5.5014E-02 | 2.3593E-02 | -3.4448E-02 | 3.5967E-02 | -2.2642E-02 | 8.5360E-03 | -1.8927E-03 | 2.2812E-04 | -1.1556E-05 |
| S6 | -7.2926E-02 | 3.8088E-02 | -3.8641E-02 | 3.3133E-02 | -1.9644E-02 | 7.3245E-03 | -1.6223E-03 | 1.9211E-04 | -9.3506E-06 |
| S7 | 6.3567E-03 | -1.2596E-02 | 2.2557E-02 | -2.8764E-02 | 2.3321E-02 | -1.1872E-02 | 3.7602E-03 | -6.7876E-04 | 5.2786E-05 |
| S8 | 6.4582E-03 | -2.0171E-02 | 3.3701E-02 | -3.9337E-02 | 2.9445E-02 | -1.4260E-02 | 4.3532E-03 | -7.5704E-04 | 5.6701E-05 |
| S9 | -2.0019E-02 | 4.1079E-03 | -7.3642E-03 | 1.1405E-02 | -1.1669E-02 | 7.2111E-03 | -2.7113E-03 | 5.6265E-04 | -4.8251E-05 |
| S10 | -5.3620E-02 | 2.8368E-02 | -1.7480E-02 | 1.1748E-02 | -8.0064E-03 | 4.1216E-03 | -1.3390E-03 | 2.3850E-04 | -1.7420E-05 |
| S11 | 1.2804E-02 | 2.5255E-02 | -2.2726E-02 | 9.8694E-03 | -2.7986E-03 | 8.1595E-04 | -2.0814E-04 | 2.9784E-05 | -1.6752E-06 |
| S12 | -1.5285E-02 | 4.0613E-02 | -3.4436E-02 | 2.0304E-02 | -8.6189E-03 | 2.5919E-03 | -4.9404E-04 | 5.1810E-05 | -2.2549E-06 |
| S13 | 5.9420E-03 | -2.9864E-03 | -6.3777E-03 | 4.3943E-03 | -1.6368E-03 | 3.8136E-04 | -5.4299E-05 | 4.2710E-06 | -1.4069E-07 |
| S14 | 3.5521E-02 | -2.5435E-02 | 6.3737E-03 | -9.5780E-04 | 7.7644E-05 | -1.2778E-07 | -6.5238E-07 | 5.8610E-08 | -1.7187E-09 |
| S15 | -6.9278E-02 | 8.7572E-03 | 3.0854E-04 | -1.0698E-04 | -4.4446E-06 | 2.4199E-06 | -2.3767E-07 | 1.0380E-08 | -1.7812E-10 |
| S16 | -5.9548E-02 | 1.5728E-02 | -3.8627E-03 | 7.3657E-04 | -9.9003E-05 | 9.1164E-06 | -5.4478E-07 | 1.8800E-08 | -2.8151E-10 |
TABLE 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
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 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In the present embodiment, the total effective focal length f of the optical imaging lens is 6.37mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 8.20mm, and the maximum field angle FOV of the optical imaging lens is 77.5 °.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
Watch 13
In embodiment 7, both the object-side surface and the image-side surface of any one of the first lens E1 through the eighth lens E8 are aspheric. Table 14 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 74、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.0577E-02 | -5.9466E-04 | -1.9603E-03 | 1.7982E-03 | -1.0673E-03 | 3.6965E-04 | -7.1537E-05 | 7.2797E-06 | -3.0591E-07 |
| S2 | -2.9817E-02 | -6.3798E-03 | -2.8189E-04 | 2.3480E-03 | -1.0184E-03 | 2.1209E-04 | -2.3988E-05 | 1.3858E-06 | -3.0951E-08 |
| S3 | -1.3875E-02 | -5.2825E-03 | -5.2917E-04 | 1.8517E-03 | -3.6648E-04 | -7.3692E-05 | 3.5679E-05 | -4.7402E-06 | 2.1814E-07 |
| S4 | 1.6151E-02 | -1.2661E-02 | 3.1835E-03 | 8.2261E-04 | -8.7756E-04 | 2.8204E-04 | -4.5914E-05 | 3.8333E-06 | -1.3246E-07 |
| S5 | -3.3715E-02 | 1.0415E-02 | -1.2139E-02 | 1.0299E-02 | -5.3205E-03 | 1.6644E-03 | -3.0865E-04 | 3.1580E-05 | -1.3930E-06 |
| S6 | -5.1269E-02 | 2.5198E-02 | -1.9790E-02 | 1.3302E-02 | -6.4963E-03 | 2.1207E-03 | -4.3633E-04 | 5.1456E-05 | -2.6610E-06 |
| S7 | -8.2667E-03 | -4.6350E-03 | 6.8609E-03 | -7.3832E-03 | 4.9955E-03 | -2.1932E-03 | 5.9638E-04 | -9.1985E-05 | 6.1618E-06 |
| S8 | -3.5869E-03 | -1.4957E-02 | 1.4087E-02 | -1.0056E-02 | 4.9832E-03 | -1.6408E-03 | 3.4329E-04 | -4.1545E-05 | 2.2191E-06 |
| S9 | 4.6207E-02 | -4.4161E-02 | 3.1195E-02 | -1.4385E-02 | 4.4275E-03 | -8.8134E-04 | 1.0821E-04 | -7.4278E-06 | 2.1642E-07 |
| S10 | 2.3145E-02 | -2.5629E-02 | 1.8376E-02 | -7.9339E-03 | 2.2598E-03 | -4.3124E-04 | 5.3506E-05 | -3.8794E-06 | 1.2313E-07 |
| S11 | 6.0782E-03 | -9.8176E-04 | -9.9341E-04 | 5.3485E-04 | -2.1461E-04 | 5.7694E-05 | -9.3273E-06 | 8.1102E-07 | -2.8763E-08 |
| S12 | -7.1508E-03 | 8.0259E-03 | -4.3681E-03 | 1.2398E-03 | -2.3409E-04 | 3.2776E-05 | -3.2105E-06 | 1.8749E-07 | -4.7736E-09 |
| S13 | 3.1800E-03 | -4.2907E-03 | -9.9983E-05 | -1.0038E-04 | 6.9943E-05 | -1.2205E-05 | 9.5279E-07 | -3.2995E-08 | 3.4433E-10 |
| S14 | 1.3618E-02 | -5.6307E-03 | -8.2822E-04 | 5.9403E-04 | -1.2081E-04 | 1.3249E-05 | -8.4430E-07 | 2.9407E-08 | -4.3245E-10 |
| S15 | -6.2633E-02 | 1.0618E-02 | -5.4593E-04 | -6.2787E-05 | 1.3243E-05 | -1.0639E-06 | 4.5347E-08 | -9.8575E-10 | 8.2651E-12 |
| S16 | -4.4806E-02 | 1.0219E-02 | -1.8730E-03 | 2.5221E-04 | -2.5269E-05 | 1.8548E-06 | -9.0554E-08 | 2.5279E-09 | -2.9986E-11 |
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
In summary, examples 1 to 7 each satisfy the relationship shown in table 15.
| Conditions/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| f×TAN(HFOV)(mm) | 4.39 | 4.41 | 4.40 | 5.13 | 6.08 | 4.41 | 5.11 |
| f/(CT7+CT8) | 5.47 | 5.56 | 5.42 | 5.96 | 6.64 | 5.29 | 6.64 |
| TTL/EPD | 1.87 | 1.87 | 1.87 | 1.92 | 1.80 | 1.86 | 1.81 |
| f/R2 | 1.91 | 2.00 | 1.95 | 1.69 | 1.66 | 1.95 | 1.72 |
| f/R10 | -1.89 | -1.34 | -0.65 | -1.21 | -1.58 | -0.66 | -1.69 |
| R4/R3 | -4.10 | -6.12 | -3.18 | -5.00 | -4.58 | -4.11 | -4.66 |
| f/R13+f/R14 | 4.17 | 4.35 | 4.01 | 4.97 | 5.17 | 3.96 | 5.16 |
| R15/R16 | 1.58 | 1.73 | 1.50 | 1.84 | 1.75 | 1.57 | 1.79 |
| |f/f3-f/f8| | 0.08 | 0.08 | 0.36 | 0.16 | 0.09 | 0.07 | 0.05 |
| f5/f4 | -1.12 | -4.38 | -1.25 | -0.95 | -0.89 | -0.01 | -0.90 |
| f7/f12 | 4.61 | 2.10 | 1.88 | 2.37 | 2.75 | 2.08 | 3.40 |
| f/|f1| | 0.04 | 0.09 | 0.01 | 0.26 | 0.09 | 0.06 | 0.08 |
| (V4+V5+V6)/3 | 37.56 | 33.07 | 31.54 | 37.56 | 37.56 | 33.07 | 37.56 |
| f/EPD | 1.40 | 1.40 | 1.40 | 1.50 | 1.36 | 1.40 | 1.40 |
Watch 15
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents 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 (25)
1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having a positive optical power;
a third lens having a negative optical power;
a fourth lens having an optical power;
a fifth lens having optical power;
a sixth lens having optical power;
a seventh lens having positive optical power; and
an eighth lens having a negative optical power;
wherein the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: f × TAN (FOV/2) >4.0mm, and
the total effective focal length f of the optical imaging lens, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy:
f/(CT7+CT8)≥5.0。
2. the optical imaging lens of claim 1, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and an entrance pupil diameter EPD of the optical imaging lens satisfy:
TTL/EPD≤2.0。
3. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R2 of the image side surface of the first lens satisfy:
f/R2>1.5。
4. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy:
f/R10<-0.5。
5. the optical imaging lens of claim 1, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy:
-10<R4/R3<-3.0。
6. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object-side surface of the seventh lens, and the radius of curvature R14 of the image-side surface of the seventh lens satisfy:
f/R13+f/R14>3.5。
7. the optical imaging lens of claim 1, wherein the radius of curvature R15 of the object-side surface of the eighth lens and the radius of curvature R16 of the image-side surface of the eighth lens satisfy:
1<R15/R16<2。
8. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f8 of the eighth lens satisfy:
|f/f3-f/f8|<0.5。
9. the optical imaging lens of claim 1, wherein the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy:
-5.0<f5/f4<0。
10. the optical imaging lens of claim 1, wherein an effective focal length f7 of the seventh lens and a combined focal length f12 of the first and second lenses satisfy:
1.5<f7/f12<5.0。
11. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy:
f/|f1|≤0.3。
12. the optical imaging lens according to claim 1, wherein abbe number V4 of the fourth lens, abbe number V5 of the fifth lens and abbe number V6 of the sixth lens satisfy:
30<(V4+V5+V6)/3<40。
13. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
f/EPD≤1.5。
14. an optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having a positive optical power;
a third lens having a negative optical power;
a fourth lens having an optical power;
a fifth lens having optical power;
a sixth lens having optical power;
a seventh lens having positive optical power; and
an eighth lens having a negative optical power;
wherein the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: f × TAN (FOV/2) >4.0mm, and
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 the entrance pupil diameter EPD of the optical imaging lens meet the following requirements:
TTL/EPD≤2.0。
15. the optical imaging lens of claim 14,
the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f8 of the eighth lens satisfy:
|f/f3-f/f8|<0.5。
16. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R2 of the image side surface of the first lens satisfy:
f/R2>1.5。
17. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy:
f/R10<-0.5。
18. the optical imaging lens of claim 14, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy:
-10<R4/R3<-3.0。
19. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens, the radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens satisfy:
f/R13+f/R14>3.5。
20. the optical imaging lens of claim 14, wherein the radius of curvature R15 of the object-side surface of the eighth lens and the radius of curvature R16 of the image-side surface of the eighth lens satisfy:
1<R15/R16<2。
21. the optical imaging lens of claim 14, wherein the effective focal length f5 of the fifth lens and the effective focal length f4 of the fourth lens satisfy:
-5.0<f5/f4<0。
22. the optical imaging lens of claim 14, wherein an effective focal length f7 of the seventh lens and a combined focal length f12 of the first and second lenses satisfy:
1.5<f7/f12<5.0。
23. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy:
f/|f1|≤0.3。
24. the optical imaging lens according to claim 14, wherein abbe number V4 of the fourth lens, abbe number V5 of the fifth lens and abbe number V6 of the sixth lens satisfy:
30<(V4+V5+V6)/3<40。
25. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
f/EPD≤1.5。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112305837A (en) * | 2020-10-30 | 2021-02-02 | 维沃移动通信有限公司 | Optical imaging lens and electronic device |
| WO2022011498A1 (en) * | 2020-07-13 | 2022-01-20 | 欧菲光集团股份有限公司 | Optical system, image capturing module, and electronic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022011498A1 (en) * | 2020-07-13 | 2022-01-20 | 欧菲光集团股份有限公司 | Optical system, image capturing module, and electronic apparatus |
| CN112305837A (en) * | 2020-10-30 | 2021-02-02 | 维沃移动通信有限公司 | Optical imaging lens and electronic device |
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