CN211086748U - Optical imaging lens - Google Patents
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Abstract
The application discloses an optical imaging lens, which sequentially comprises a first lens with focal power, a second lens with focal power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with focal power, a seventh lens with focal power and an eighth lens with focal power, wherein the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens satisfy that 2.4mm is not less than tan (Semi-FOV) × | f8| <3.5mm from an object side to an image side along an optical axis.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the recent development of image pickup apparatuses, they have been popularized and applied in many fields. Meanwhile, the imaging quality of the image pickup apparatus is also more and more demanded by the market. For example, as a main camera of a mobile terminal device, an optical imaging lens exhibits a trend of large image plane, large aperture, and ultra-thinning, which presents a new challenge to optical system design. Among the layer-by-layer challenges in optical system design, resolving power is an important ring. The resolving power performance of the optical imaging lens greatly affects the imaging quality of the image pickup apparatus. The improvement of the resolving power of the optical imaging lens is helpful for improving the imaging quality of the image pickup apparatus. Therefore, an optical imaging lens with high resolution is required.
SUMMERY OF THE UTILITY MODEL
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: the first lens with focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a convex surface; a second lens having a focal power, wherein the object-side surface of the second lens is convex, and the image-side surface of the second lens is concave; a third lens having 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 optical power; and an eighth lens having a refractive power, an object side surface of which is concave.
In one embodiment, the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens satisfy 2.4mm ≦ tan (Semi-FOV) × | f8| <3.5 mm.
In one embodiment, the distance TT L between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the effective focal length f1 of the first lens satisfy 0.5< TT L/| f1| < 1.6.
In one embodiment, the maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT42 of the image-side surface of the fourth lens satisfy: DT32/DT42 is less than or equal to 0.99.
In one embodiment, an on-axis distance SAG71 from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens and an on-axis distance SAG72 from an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens satisfy: 0.4< SAG72/SAG71< 1.8.
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: 0.7< R3/R4< 2.0.
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 <2.
In one embodiment, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy | R1/R2| × 10 ≦ 0.22.
In one embodiment, a distance T56 between the fifth lens and the sixth lens on the optical axis, a distance T67 between the sixth lens and the seventh lens on the optical axis, a distance T78 between the seventh lens and the eighth lens on the optical axis, and a distance TT L between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis satisfy 0< (T56+ T67+ T78)/TT L < 0.5.
In one embodiment, the central thickness CT6 of the sixth lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: 0.6< CT6/CT 1< 2.0.
In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT2 of the second lens on the optical axis satisfy: 0.5< CT5/CT2< 1.5.
In one embodiment, the radius of curvature R15 of the object side surface of the eighth lens and the total effective focal length f of the optical imaging lens satisfy: -1< R15/f <0.
The optical imaging lens provided by the application adopts a plurality of lens arrangements, including a first lens to an eighth lens. Through the mutual relation of the maximum half field angle of the optical imaging lens and the effective focal length of the eighth lens, the surface types of the first lens, the second lens and the eighth lens are optimally arranged, the first lens, the second lens and the eighth lens are reasonably matched with each other, the system aberration is balanced, and the resolving power is improved.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an 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 on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical 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 an optical imaging lens of embodiment 8;
fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 9;
fig. 19 is a schematic structural view showing an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20D 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 10.
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.
In an exemplary embodiment, the first lens element may have a positive optical power, the object-side surface of the first lens element may be convex and the image-side surface of the first lens element may be convex, the second lens element may have a positive or negative optical power, the object-side surface of the first lens element may be convex and the image-side surface of the first lens element may be concave, the third lens element may have a positive or negative optical power, the fourth lens element may have a positive or negative optical power, the fifth lens element may have a positive or negative optical power, the sixth lens element may have a positive or negative optical power, the seventh lens element may have a positive or negative optical power, and the eighth lens element may have a negative optical power, the object-side surface of the eighth lens element may be concave.
In an exemplary embodiment, a distance TT L on an optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and an effective focal length f1 of the first lens satisfy 0.5< TT L/| f1| <1.6, preferably 0.6< TT L/| f1| < 1.5.
In an exemplary embodiment, the maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT42 of the image-side surface of the fourth lens satisfy: DT32/DT42 is less than or equal to 0.99. The ratio of the maximum effective radius of the image side surface of the third lens to the maximum effective radius of the image side surface of the fourth lens is set to be less than or equal to 0.99, so that the lens assembly manufacturability is improved, the off-axis aberration is corrected, and the image quality is improved.
In an exemplary embodiment, an on-axis distance SAG71 from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens and an on-axis distance SAG72 from an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens satisfy: 0.4< SAG72/SAG71< 1.8. The proportional relation between the axial distance from the intersection point of the object side surface of the seventh lens and the optical axis to the effective radius peak of the object side surface of the seventh lens and the axial distance from the intersection point of the image side surface of the seventh lens and the optical axis to the effective radius peak of the image side surface of the seventh lens is reasonably set, so that ghost image energy generated by reflection of the object side surface and the image side surface of the seventh lens is reduced, and the risk of generating ghost images is reduced.
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: 0.7< R3/R4<2.0, preferably 1.0< R3/R4< 1.8. 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 within a reasonable numerical range, so that astigmatism in the direction of arc loss of the optical system can be corrected.
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 <2. 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 the advantage of a large aperture while meeting the surface shape and the focal power of each lens set by the embodiment, and the imaging effect of the optical system in an environment with weak light rays is enhanced. Meanwhile, the relation arrangement is also beneficial to reducing the aberration of the marginal field of view of the optical system, and the virtual-real same-frame shooting effect is obtained, so that the shooting main body is highlighted.
In an exemplary embodiment, 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 satisfy | R1/R2| × 10 ≦ 0.22, preferably, 0.10 ≦ | R1/R2| × 10 ≦ 0.22.
In an exemplary embodiment, the distance T56 between the fifth lens and the sixth lens on the optical axis, the distance T67 between the sixth lens and the seventh lens on the optical axis, the distance T78 between the seventh lens and the eighth lens on the optical axis, and the distance TT L between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis satisfy 0< (T56+ T67+ T78)/TT L <0.5, preferably 0.1< (T56+ T67+ T78)/TT L < 0.4.
In an exemplary embodiment, a central thickness CT6 of the sixth lens on the optical axis and a central thickness CT1 of the first lens on the optical axis satisfy: 0.6< CT6/CT 1< 2.0, preferably 0.9< CT6/CT 1< 1.8. The proportional relation between the central thickness of the sixth lens on the optical axis and the central thickness of the first lens on the optical axis is reasonably set, so that the forming manufacturability of the lenses is favorably improved, and the miniaturization of the lens is favorably realized.
In an exemplary embodiment, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT2 of the second lens on the optical axis satisfy: 0.5< CT5/CT2<1.5, preferably 0.7< CT5/CT2< 1.3. The proportion relation between the central thickness of the fifth lens on the optical axis and the central thickness of the second lens on the optical axis is reasonably set, so that the ultra-thinning of the optical lens is favorably realized, and the astigmatism in the meridional direction and the arc loss direction of the off-axis field of the optical system is favorably corrected.
In an exemplary embodiment, a radius of curvature R15 of the object side surface of the eighth lens and a total effective focal length f of the optical imaging lens satisfy: -1< R15/f <0. The curvature radius of the object side surface of the eighth lens is reasonably set, so that the ratio of the curvature radius of the object side surface of the eighth lens to the total effective focal length of the optical imaging lens is in a reasonable numerical range, the incident Angle of light rays of the lens and a chip CRA (Chief Ray Angle) are favorably adjusted, astigmatism of a system is favorably corrected, and distortion is reduced.
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.
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 a better curvature radius characteristic, 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 positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The 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 concave 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 4.11mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 40.52 °, and the f-number Fno of the optical imaging lens is 1.70.
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、A14And A16。
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 positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 4.04mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 40.29 °, and the f-number Fno of the optical imaging lens is 1.75.
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、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.3243E-03 | 7.2468E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 8.8015E-03 | -2.1862E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -7.8913E-02 | 6.6630E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -9.3566E-02 | 6.5523E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -4.5440E-03 | 2.6483E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -3.4619E-02 | 4.1779E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -3.5153E-02 | 1.7719E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -6.2194E-02 | 5.3041E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -6.3098E-02 | 6.2792E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -4.9230E-02 | 2.1421E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -4.9960E-02 | 1.0157E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -5.7685E-02 | 4.2510E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -6.7584E-02 | -3.7375E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -2.1605E-02 | 1.9651E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -2.0131E-02 | 4.0336E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -2.0422E-02 | 5.7525E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 this embodiment, the total effective focal length f of the optical imaging lens is 4.26mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.35mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 38.98 °, and the f-number Fno of the optical imaging lens is 1.95.
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 |
| S1 | -1.5964E-03 | 7.0410E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 5.6287E-03 | -1.8882E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -8.4616E-02 | 3.5720E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -9.4949E-02 | 5.2980E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -2.3175E-02 | 1.9733E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -4.8771E-02 | 2.9341E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.0648E-02 | 2.7154E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -6.3778E-02 | 8.7483E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -6.5275E-02 | 5.9738E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -2.0524E-02 | 3.3408E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -4.4133E-02 | 1.6995E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -5.5826E-02 | 3.8386E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -7.5572E-02 | -1.2881E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -2.8918E-02 | 1.8221E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -1.2630E-02 | 2.1398E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -1.4424E-02 | -1.1333E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 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 concave 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 this embodiment, the total effective focal length f of the optical imaging lens is 4.06mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 40.20 °, and the f-number Fno of the optical imaging lens is 1.85.
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、A14And A16。
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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 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 convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 4.25mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 38.89 °, and the f-number Fno of the optical imaging lens is 1.75.
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、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 2.3628E-03 | 4.5364E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 9.0878E-03 | -1.6357E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -7.7102E-02 | 8.7435E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.7650E-02 | 1.3781E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 2.4974E-02 | 3.1256E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -7.9727E-03 | 4.7399E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -3.5990E-02 | 1.7044E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -5.7249E-02 | -4.8772E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -5.5525E-02 | -7.8563E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -3.5974E-02 | 1.0531E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -1.6383E-02 | 6.6994E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -5.1285E-02 | 7.5788E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -8.4067E-02 | 1.8113E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -1.6806E-02 | 1.4382E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | 7.9906E-03 | 9.4663E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -1.2989E-02 | 7.3245E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
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 positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a 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 convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 4.09mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.99 °, and the f-number Fno of the optical imaging lens is 1.75.
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、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 2.0093E-03 | -3.6158E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 7.7330E-03 | -1.2877E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -8.2471E-02 | 7.5462E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -9.0384E-02 | 9.3377E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 3.3758E-02 | 2.6295E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -2.8310E-04 | 4.2237E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -5.3067E-02 | 2.1071E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -5.3120E-02 | -2.1280E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -4.4478E-02 | 5.5192E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -6.0172E-02 | 2.2854E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -4.6127E-02 | 9.4741E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -4.2906E-02 | 1.7059E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -7.2349E-02 | -3.3446E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -3.4065E-02 | 1.0015E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -1.8390E-02 | 2.9958E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -1.7297E-02 | 2.1585E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
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 convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. 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 concave 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 3.80mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.35mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 42.08 °, and the f-number Fno of the optical imaging lens is 1.90.
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、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.2767E-02 | -1.5327E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -7.5515E-04 | -8.6227E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -9.8366E-02 | -1.3436E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.0695E-01 | -2.2611E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 5.6802E-03 | 5.5989E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -2.0879E-02 | 8.9219E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -7.0666E-02 | 8.0773E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -4.8583E-02 | -6.1263E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -2.0115E-02 | 1.1411E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -6.8171E-02 | 3.6057E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -8.2364E-02 | 1.5325E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -7.2696E-02 | 8.4914E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -6.9786E-02 | -1.5138E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -1.9611E-02 | -1.3332E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -1.0378E-02 | 1.2793E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -1.7184E-02 | 1.6568E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
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.
Example 8
An optical 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 structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, 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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 3.94mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.30mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.55mm, the maximum half field angle Semi-FOV of the optical imaging lens is 40.60 °, and the f-number Fno of the optical imaging lens is 1.70.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
Watch 15
In embodiment 8, 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 16 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 84、A6、A8、A10、A12、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 3.9013E-03 | 3.0208E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.6126E-02 | -3.8715E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -7.4046E-02 | 1.0671E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.7389E-02 | 1.0115E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 4.3291E-02 | -9.7267E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.2935E-02 | 1.9029E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -4.5179E-02 | 2.8780E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -3.4707E-02 | -3.7612E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -5.3523E-02 | 1.5658E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -8.5567E-02 | 3.1268E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -6.3498E-02 | 1.1542E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -6.3925E-02 | 2.4641E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -6.1577E-02 | -1.4187E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -1.6538E-02 | -1.2214E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -2.9092E-02 | 5.9978E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -2.3197E-02 | 7.4625E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
TABLE 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, 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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave 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 concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The 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 concave object-side surface S15 and a convex 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 4.25mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.55mm, the maximum half field angle Semi-FOV of the optical imaging lens is 38.48 °, and the f-number Fno of the optical imaging lens is 1.80.
Table 17 shows a basic parameter table of the optical imaging lens of example 9, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 17
In embodiment 9, 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 18 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1-S16 in example 94、A6、A8、A10、A12、A14And A16。
Fig. 18A shows an on-axis chromatic aberration curve of an optical imaging lens of embodiment 9, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 9. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens according to embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 20D. Fig. 19 shows a schematic structural diagram of an optical imaging lens according to embodiment 10 of the present application.
As shown in fig. 19, 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 convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive 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 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 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 convex image-side surface S14. The eighth lens element E8 has negative power, and has a concave 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 4.12mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 5.40mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.60mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.74 °, and the f-number Fno of the optical imaging lens is 1.45.
Table 19 shows a basic parameter table of the optical imaging lens of example 10, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).
In embodiment 10, 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 20 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S16 used in example 104、A6、A8、A10、A12、A14And A16。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.2656E-04 | -3.1293E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 7.9438E-03 | -5.2711E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -7.2819E-02 | 1.2280E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.0804E-02 | 1.0777E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 3.6764E-02 | 2.2285E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 9.7322E-04 | 3.9777E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -8.8823E-02 | 1.1784E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S8 | -7.1916E-02 | 7.1887E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S9 | -3.4229E-02 | 8.8164E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -9.7309E-02 | 2.3718E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S11 | -8.3945E-02 | 1.4453E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S12 | -7.3609E-02 | 3.2746E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S13 | -9.2498E-02 | 4.0307E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S14 | -2.9930E-02 | 2.6860E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S15 | -1.9892E-02 | 4.2181E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S16 | -2.0002E-02 | 1.9515E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
Watch 20
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 20B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 10. Fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values corresponding to different image heights. Fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 10, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 20A to 20D, the optical imaging lens according to embodiment 10 can achieve good imaging quality.
In summary, examples 1 to 10 each satisfy the relationship shown in table 21.
TABLE 21
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 (21)
1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
the first lens with focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a convex surface;
a second lens having a focal power, wherein the object-side surface of the second lens is convex, and the image-side surface of the second lens is concave;
a third lens having 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 optical power; and
an eighth lens having a refractive power, an object side surface of which is concave; wherein,
the maximum half field angle Semi-FOV of the optical imaging lens and the effective focal length f8 of the eighth lens meet the following conditions:
2.4mm≤tan(Semi-FOV)×|f8|<3.5mm。
2. the optical imaging lens of claim 1, wherein a distance TT L on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens satisfies, with an effective focal length f1 of the first lens:
0.5<TTL/|f1|<1.6。
3. the optical imaging lens of claim 1, wherein the maximum effective radius DT32 of the image side surface of the third lens and the maximum effective radius DT42 of the image side surface of the fourth lens satisfy:
DT32/DT42≤0.99。
4. the optical imaging lens of claim 1, wherein an on-axis distance from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens SAG71 and an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens SAG72 satisfy:
0.4<SAG72/SAG71<1.8。
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:
0.7<R3/R4<2.0。
6. 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<2。
7. the optical imaging lens of claim 1, wherein 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 satisfy:
|R1/R2|×10≤0.22。
8. the optical imaging lens of claim 1, wherein a separation distance T56 on the optical axis of the fifth lens and the sixth lens, a separation distance T67 on the optical axis of the sixth lens and the seventh lens, a separation distance T78 on the optical axis of the seventh lens and the eighth lens, and a distance TT L on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens satisfy:
0<(T56+T67+T78)/TTL<0.5。
9. the optical imaging lens of claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy:
0.6<CT6/CT1<2.0。
10. the optical imaging lens of claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy:
0.5<CT5/CT2<1.5。
11. the optical imaging lens of claim 1, wherein the radius of curvature R15 of the object side surface of the eighth lens and the total effective focal length f of the optical imaging lens satisfy:
-1<R15/f<0。
12. an optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
the first lens with focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a convex surface;
a second lens having a focal power, wherein the object-side surface of the second lens is convex, and the image-side surface of the second lens is concave;
a third lens having 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 optical power; and
an eighth lens having a refractive power, an object side surface of which is concave; wherein the maximum effective radius DT32 of the image side surface of the third lens and the maximum effective radius DT42 of the image side surface of the fourth lens satisfy:
DT32/DT42≤0.99。
13. the optical imaging lens of claim 12, 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<2。
14. the optical imaging lens of claim 12, wherein a distance TT L on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens satisfies, with an effective focal length f1 of the first lens:
0.5<TTL/|f1|<1.6。
15. the optical imaging lens of claim 12, wherein an on-axis distance SAG71 from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens and an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens satisfies SAG 72:
0.4<SAG72/SAG71<1.8。
16. the optical imaging lens of claim 12, 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:
0.7<R3/R4<2.0。
17. the optical imaging lens of claim 12, wherein 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 satisfy:
|R1/R2|×10≤0.22。
18. the optical imaging lens of claim 12, wherein a separation distance T56 on the optical axis of the fifth lens and the sixth lens, a separation distance T67 on the optical axis of the sixth lens and the seventh lens, a separation distance T78 on the optical axis of the seventh lens and the eighth lens, and a distance TT L on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens satisfy:
0<(T56+T67+T78)/TTL<0.5。
19. the optical imaging lens of claim 12, wherein a center thickness CT6 of the sixth lens on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy:
0.6<CT6/CT1<2.0。
20. the optical imaging lens of claim 12, wherein a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy:
0.5<CT5/CT2<1.5。
21. the optical imaging lens of claim 12, wherein the radius of curvature R15 of the object side surface of the eighth lens and the total effective focal length f of the optical imaging lens satisfy:
-1<R15/f<0。
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| CN110426822A (en) * | 2019-08-26 | 2019-11-08 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| CN110426822A (en) * | 2019-08-26 | 2019-11-08 | 浙江舜宇光学有限公司 | Optical imaging lens |
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