CN211857034U - Optical imaging lens - Google Patents
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- CN211857034U CN211857034U CN201922349227.8U CN201922349227U CN211857034U CN 211857034 U CN211857034 U CN 211857034U CN 201922349227 U CN201922349227 U CN 201922349227U CN 211857034 U CN211857034 U CN 211857034U
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Abstract
The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having a negative optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a negative optical power; a sixth lens having optical power; and a seventh lens having a refractive power, the object side surface of which is convex. And 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 sum Σ ETP of the thicknesses of the first lens to the seventh lens at 1/2EPD height and parallel to the optical axis and the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens satisfy: sigma ETP/TTL is less than 0.6.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the rapid development of portable electronic devices, the market competition is also becoming more intense. For example, in the field of mobile phones, intense market competition has led to increased product homogeneity. In such a situation, consumers have placed more stringent demands on the functions of the portable electronic devices. In particular, the camera function of portable electronic devices such as consumer mobile phones is increasingly required.
The trend of using portable electronic devices such as mobile phones to pick up images instead of traditional cameras is becoming more and more obvious. In this trend, a camera module having a plurality of camera functions has become a favorite of portable smart devices such as mobile phones.
In order to provide a high-quality photographing function for a user in an all-round manner, the current mainstream adopts a camera module in the form of an ultra-thin large-image-plane lens, a telephoto lens and a wide-angle lens. The camera module supplier can select different lens arrangements according to the appropriate design target. No matter what kind of lens is designed, developers need to consider multiple factors, rather than simply scaling parameters equally, to manufacture a miniaturized lens with excellent imaging quality. The feasibility of the actual molding and assembly process must also be considered in the design process.
SUMMERY OF THE UTILITY MODEL
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 a negative optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a negative optical power; a sixth lens having optical power; and a seventh lens having a refractive power, the object side surface of which is convex. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet the following conditions: f/EPD < 2; and a sum Σ ETP of thicknesses of the first to seventh lenses at 1/2EPD height and parallel to the optical axis and a distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens satisfy: sigma ETP/TTL is less than 0.6.
In one embodiment, the combined focal length f12 of the first and second lenses and the effective focal length f1 of the first lens may satisfy: 2 < f12/f1 < 15.
In one embodiment, the central thickness CT3 of the third lens on the optical axis and the separation distance T34 of the third lens and the fourth lens on the optical axis may satisfy: 1 < CT3/T34 < 6.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy: FOV > 90 deg.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the effective focal length f1 of the first lens may satisfy: r1/f1 is more than 1.0 and less than 6.0.
In one embodiment, a distance SAG41 on the optical axis from the intersection point of the object-side surface of the fourth lens and the optical axis to the effective radius vertex of the object-side surface of the fourth lens and a distance SAG42 on the optical axis from the intersection point of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens may satisfy: 0 < (SAG42+ SAG41)/(SAG42-SAG41) < 4.0.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens may satisfy: 0 < f5/(R9+ R10) < 2.
In one embodiment, the central thickness CT3 of the third lens on the optical axis and the distance TTL of the object-side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: CT3/TTL < 0.13.
In one embodiment, a sum Σ AT of a distance TD on the optical axis from the object-side surface of the first lens element to the image-side surface of the seventh lens element and a distance between any two adjacent first lens elements to the seventh lens element on the optical axis may satisfy: sigma AT/TD is less than 0.4.
In one embodiment, a sum Σ ET of edge thicknesses of the first to seventh lenses may satisfy: e < 3 mm.
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 may satisfy: f/EPD is less than or equal to 1.8.
In one embodiment, the optical imaging lens may further include a diaphragm, and the diaphragm may be located between the second lens and the third lens.
Another 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 a negative optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a negative optical power; a sixth lens having optical power; and a seventh lens having a refractive power, an object side surface of which is convex. A sum Σ ET of edge thicknesses of the first lens to the seventh lens satisfies: e, less than 3 mm; and a sum Σ ETP of thicknesses of the first to seventh lenses at 1/2EPD height and parallel to the optical axis and a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens satisfy: sigma ETP/TTL is less than 0.6.
With the above configuration, the optical imaging lens according to the present application can have at least one advantageous effect of high resolution, small size, large wide angle, high imaging quality, and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
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 the optical imaging lens of embodiment 8.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are 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 seven lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, respectively. The seven lenses are arranged along the optical axis in sequence from the object side to the image side. At least one of the first lens to the seventh lens has an aspherical mirror surface. Any adjacent two lenses of the first lens to the seventh lens may have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have a negative power; the second lens has positive focal power or negative focal power; the third lens has positive focal power or negative focal power; the fourth lens has positive focal power or negative focal power; the fifth lens may have a negative optical power; the sixth lens has positive focal power or negative focal power; the seventh lens element has positive or negative power, and its object-side surface may be convex.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/EPD < 2, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD may further satisfy: f/EPD is less than or equal to 1.8. The f/EPD is less than or equal to 1.8, the thickness of each lens can be reasonably distributed under the condition that the light incoming amount is in a reasonable range, the manufacturing difficulty is reduced, and the yield is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: Σ ETP/TTL < 0.6, where Σ ETP is the sum of the thicknesses of the first to seventh lenses at 1/2EPD height and parallel to the optical axis, and TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens. The requirement that the sigma ETP/TTL is less than 0.6 is met, the thickness of each lens can be reasonably distributed under the condition that the total size of the lens is small, the manufacturing difficulty is reduced, and the yield is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2 < f12/f1 < 15, where f12 is the combined focal length of the first and second lenses and f1 is the effective focal length of the first lens. More specifically, f12 and f1 may further satisfy: 3 < f12/f1 < 14. Satisfying 2 < f12/f1 < 15, the aberration of the entire lens can be reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1 < CT3/T34 < 6, where CT3 is the central thickness of the third lens on the optical axis, and T34 is the separation distance between the third lens and the fourth lens on the optical axis. More specifically, CT3 and T34 further satisfy: 1.5 < CT3/T34 < 5.5. Satisfying 1 < CT3/T34 < 6 helps to reduce ghost image energy generated by third lens internal reflection and third and fourth lens internal reflection, and simultaneously helps to keep the total length of the imaging lens small.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: the FOV is more than 90 degrees, wherein the FOV is the maximum field angle of the optical imaging lens. The FOV is more than 90 degrees, the advantage of the wide-angle lens can be increased, and the wide-angle lens has a wider imaging range.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < R1/f1 < 6.0, wherein R1 is the radius of curvature of the object side of the first lens and f1 is the effective focal length of the first lens. More specifically, R1 and f1 may further satisfy: 2.5 < R1/f1 < 5.5. The requirement that R1/f1 is more than 1.0 and less than 6.0 is met, the light-gathering capacity of the first lens can be reasonably planned, and the primary aberration of the first lens can be reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < (SAG42+ SAG41)/(SAG42-SAG41) < 4.0, wherein SAG41 is a distance on the optical axis from the intersection point of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, and SAG42 is a distance on the optical axis from the intersection point of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens. More specifically, SAG42 and SAG41 further may satisfy: 1.0 < (SAG42+ SAG41)/(SAG42-SAG41) < 3.0. Satisfies 0 < (SAG42+ SAG41)/(SAG42-SAG41) < 4.0, facilitates refraction of off-axis field, and reduces ghost image caused by the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < f5/(R9+ R10) < 2, where R9 is the radius of curvature of the object-side surface of the fifth lens, R10 is the radius of curvature of the image-side surface of the fifth lens, and f5 is the effective focal length of the fifth lens. The optical focusing lens meets the condition that f5/(R9+ R10) < 2, can reasonably plan the light focusing capacity of the fifth lens, and reduces the primary aberration such as spherical aberration of the fifth lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: CT3/TTL < 0.13, wherein CT3 is the central thickness of the third lens on the optical axis, and TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis. The requirement that CT3/TTL is less than 0.13 is met, and the transverse size of the lens is reduced and the material consumption is reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: Σ AT/TD < 0.4, where TD is the distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the seventh lens element, Σ AT is the sum of the distances on the optical axis between any two adjacent first lens elements to the seventh lens element. The requirement that the Sigma AT/TD is less than 0.4 is met, the optical imaging lens is favorable for keeping smaller total length, and meanwhile, the optical imaging lens has better distortion correction capability, so that better imaging quality is achieved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: Σ ET < 3mm, where Σ ET is the sum of the edge thicknesses of the first to seventh lenses. The requirement that the Sigma ET is less than 3mm is met, the difficulty of the optical imaging lens in the assembling process is favorably reduced, and the yield of each single lens is favorably improved.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the second lens and the third 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-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the optical imaging lens can be effectively reduced, the processability of the optical imaging lens can be improved, and the optical imaging lens is more favorable for production and processing and can be suitable for portable electronic products. The optical imaging lens configured as described above can have features such as high resolution, small size, large wide angle, and good imaging quality.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. 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, and the seventh lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
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 seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven 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 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 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 convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
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 this example, the total effective focal length f of the optical imaging lens is 2.50mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens) is 5.66 mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 of the optical imaging lens is 3.06mm, the aperture value Fno of the optical imaging lens is 1.70, and the maximum half field angle Semi-FOV of the optical imaging lens is 51.99 °.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 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 S14 used in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
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. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. 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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 6.00mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 2.99 mm, the aperture value Fno of the optical imaging lens is 1.70, and the maximum half field angle Semi-FOV of the optical imaging lens is 51.99 °.
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 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 3
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 0.0000E+00 | 5.5561E-02 | -2.0070E-02 | 6.7748E-03 | -1.6127E-03 | 2.4475E-04 | -2.1273E-05 | 8.0472E-07 | 0.0000E+00 |
| S2 | 0.0000E+00 | -4.7387E-02 | 4.6622E-03 | 1.5519E-03 | -5.4351E-04 | 6.1320E-05 | -1.7806E-06 | -6.4656E-08 | 0.0000E+00 |
| S3 | 0.0000E+00 | -2.4073E-02 | -8.9854E-02 | 2.0044E-01 | -3.7088E-01 | 3.4942E-01 | -1.5021E-01 | 2.3952E-02 | 0.0000E+00 |
| S4 | 0.0000E+00 | 2.1298E-01 | -2.9642E-01 | 1.4173E+00 | -4.2469E+00 | 7.7066E+00 | -7.5501E+00 | 3.2560E+00 | 0.0000E+00 |
| S5 | 0.0000E+00 | 1.0601E-02 | -8.5859E-02 | 9.6412E-02 | 9.6578E-02 | -8.0869E-01 | 1.1687E+00 | -6.0997E-01 | 0.0000E+00 |
| S6 | 0.0000E+00 | -2.3567E-01 | -2.7364E-02 | 4.0297E-01 | -9.0399E-01 | 1.0721E+00 | -6.9218E-01 | 1.6501E-01 | 0.0000E+00 |
| S7 | -2.4925E-01 | -7.6174E-03 | 3.8756E-02 | 6.9680E-02 | 1.7320E-01 | -4.5743E-01 | 3.3139E-01 | -7.8143E-02 | 0.0000E+00 |
| S8 | -1.4554E-01 | -2.2095E-01 | -2.0706E-02 | 1.2816E+00 | -2.7447E+00 | 2.7591E+00 | -1.3781E+00 | 2.7312E-01 | 0.0000E+00 |
| S9 | 4.8565E-02 | -1.1003E+00 | 3.9031E+00 | -6.8085E+00 | 6.7615E+00 | -4.1055E+00 | 1.6490E+00 | -4.6608E-01 | 7.3448E-02 |
| S10 | -1.3738E-01 | -1.6315E-01 | 1.5714E+00 | -3.0615E+00 | 3.1319E+00 | -1.9257E+00 | 7.2597E-01 | -1.5663E-01 | 1.4920E-02 |
| S11 | -3.4578E-02 | 7.6993E-02 | -1.0247E-01 | 6.6530E-02 | -2.6143E-02 | 6.2975E-03 | -8.4645E-04 | 4.7172E-05 | 2.1157E-07 |
| S12 | 1.5103E-01 | -1.5388E-01 | 1.0280E-01 | -5.6068E-02 | 2.2437E-02 | -5.9848E-03 | 9.9410E-04 | -9.3064E-05 | 3.7412E-06 |
| S13 | -3.7186E-01 | 2.4797E-01 | -1.6664E-01 | 9.3288E-02 | -3.9281E-02 | 1.1514E-02 | -2.1252E-03 | 2.1632E-04 | -9.1522E-06 |
| S14 | -2.1188E-01 | 1.4320E-01 | -7.2785E-02 | 2.6845E-02 | -6.8179E-03 | 1.1175E-03 | -1.1023E-04 | 5.8285E-06 | -1.2363E-07 |
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 5.50mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 2.42 mm, the aperture value Fno of the optical imaging lens is 1.80, and the maximum half field angle Semi-FOV of the optical imaging lens is 46.00 °.
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 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 5
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.1753E-01 | -9.1544E-02 | 7.3559E-02 | -4.8286E-02 | 2.3720E-02 | -8.1997E-03 | 1.8349E-03 | -2.3341E-04 | 1.2650E-05 |
| S2 | -5.1748E-02 | -3.2201E-02 | 6.3502E-02 | -4.9746E-02 | 2.1798E-02 | -5.2474E-03 | 5.8712E-04 | -6.8953E-06 | -2.7060E-06 |
| S3 | -7.3700E-02 | -7.2733E-02 | 2.4345E-01 | -8.1312E-01 | 1.9188E+00 | -2.7352E+00 | 2.2845E+00 | -1.0265E+00 | 1.9105E-01 |
| S4 | 2.2153E-01 | -4.2187E-01 | 3.3676E+00 | -1.9012E+01 | 7.0706E+01 | -1.6438E+02 | 2.3186E+02 | -1.8110E+02 | 6.0420E+01 |
| S5 | 0.0000E+00 | 2.3629E-02 | -9.1881E-01 | 9.7248E+00 | -6.1423E+01 | 2.3792E+02 | -5.7123E+02 | 8.2624E+02 | -6.5698E+02 |
| S6 | 0.0000E+00 | -4.3186E-01 | 8.6989E-01 | -3.0753E+00 | 8.5859E+00 | -1.6528E+01 | 2.0608E+01 | -1.5642E+01 | 6.4852E+00 |
| S7 | -2.4925E-01 | -1.8828E-01 | 3.5301E-02 | -2.3286E-01 | 5.2412E-01 | -4.0946E-01 | 1.0270E-01 | 6.9440E-02 | -9.1127E-02 |
| S8 | -1.4554E-01 | -2.5600E-01 | 1.4479E-01 | -7.1666E-01 | 2.9633E+00 | -6.7762E+00 | 8.4864E+00 | -5.7457E+00 | 1.9425E+00 |
| S9 | 4.8565E-02 | 1.8251E-02 | -7.0300E-01 | 2.6773E+00 | -4.3634E+00 | 2.5047E+00 | 1.3291E+00 | -2.5704E+00 | 1.2821E+00 |
| S10 | -1.3738E-01 | -2.2070E-01 | 4.2946E-01 | -2.3694E-01 | 9.7351E-02 | -4.1061E-01 | 6.8293E-01 | -4.9613E-01 | 1.7451E-01 |
| S11 | -3.4578E-02 | 5.6750E-02 | -1.0422E-01 | 4.9130E-02 | 2.4835E-02 | -7.2618E-02 | 5.9707E-02 | -2.4456E-02 | 5.0540E-03 |
| S12 | 1.5103E-01 | 2.4849E-01 | -3.4547E-01 | 3.1511E-01 | -2.0657E-01 | 9.1283E-02 | -2.6039E-02 | 4.5582E-03 | -4.4391E-04 |
| S13 | -3.7186E-01 | -4.1211E-01 | 2.4895E-01 | -1.1115E-01 | 3.7209E-02 | -8.1442E-03 | 1.0671E-03 | -8.3526E-05 | 5.1195E-06 |
| S14 | -2.1188E-01 | -2.5405E-01 | 1.6389E-01 | -5.2760E-02 | -9.2953E-04 | 7.2176E-03 | -2.7448E-03 | 5.0842E-04 | -4.8460E-05 |
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 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. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 5.98mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 3.05 mm, the aperture value Fno of the optical imaging lens is 1.70, and the maximum half field angle Semi-FOV of the optical imaging lens is 51.99 °.
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 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 0.0000E+00 | 5.3653E-02 | -2.0169E-02 | 6.9056E-03 | -1.6340E-03 | 2.4398E-04 | -2.0664E-05 | 7.5423E-07 | 0.0000E+00 |
| S2 | 0.0000E+00 | -5.1595E-02 | 1.1967E-02 | -3.0802E-03 | 9.2434E-04 | -1.9173E-04 | 2.0893E-05 | -8.8779E-07 | 0.0000E+00 |
| S3 | 0.0000E+00 | -2.6538E-02 | -8.2732E-02 | 2.0820E-01 | -3.8047E-01 | 3.2971E-01 | -1.2924E-01 | 1.8985E-02 | 0.0000E+00 |
| S4 | 0.0000E+00 | 2.1875E-01 | -3.6997E-01 | 2.0403E+00 | -6.8875E+00 | 1.3298E+01 | -1.3550E+01 | 5.8912E+00 | 0.0000E+00 |
| S5 | 0.0000E+00 | 8.5974E-03 | -1.0848E-01 | 2.0125E-01 | -1.6120E-01 | -6.1852E-01 | 1.3268E+00 | -8.3665E-01 | 0.0000E+00 |
| S6 | 0.0000E+00 | -2.2366E-01 | -1.0606E-01 | 5.6807E-01 | -1.1390E+00 | 1.2784E+00 | -7.9076E-01 | 1.8425E-01 | 0.0000E+00 |
| S7 | -2.2846E-01 | 7.9014E-02 | -5.0192E-01 | 1.4205E+00 | -1.7913E+00 | 1.2261E+00 | -4.5696E-01 | 7.7906E-02 | 0.0000E+00 |
| S8 | -2.1849E-01 | 2.2637E-01 | -1.4603E+00 | 4.3856E+00 | -6.6762E+00 | 5.5454E+00 | -2.4032E+00 | 4.2568E-01 | 0.0000E+00 |
| S9 | 2.9824E-02 | -8.4471E-01 | 2.6779E+00 | -3.5605E+00 | 1.7784E+00 | 4.9092E-01 | -9.0887E-01 | 3.3861E-01 | -3.7979E-02 |
| S10 | -1.2534E-01 | -1.8665E-01 | 1.5362E+00 | -2.9029E+00 | 2.8870E+00 | -1.7164E+00 | 6.2102E-01 | -1.2765E-01 | 1.1510E-02 |
| S11 | -5.9043E-03 | -6.4672E-02 | 6.4950E-02 | -2.5011E-02 | -1.5957E-02 | 2.1075E-02 | -9.0082E-03 | 1.7753E-03 | -1.3674E-04 |
| S12 | 2.1530E-01 | -3.7004E-01 | 3.6488E-01 | -2.4234E-01 | 1.0657E-01 | -3.0486E-02 | 5.4637E-03 | -5.5838E-04 | 2.4849E-05 |
| S13 | -3.7242E-01 | 2.5173E-01 | -1.7832E-01 | 1.0290E-01 | -4.4041E-02 | 1.3066E-02 | -2.4441E-03 | 2.5375E-04 | -1.1043E-05 |
| S14 | -2.2831E-01 | 1.4729E-01 | -6.9421E-02 | 2.5078E-02 | -6.7742E-03 | 1.2692E-03 | -1.5216E-04 | 1.0396E-05 | -3.0633E-07 |
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 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. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 6.00mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 3.04 mm, the aperture value Fno of the optical imaging lens is 1.70, and the maximum half field angle Semi-FOV of the optical imaging lens is 52.00 °.
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 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 9
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 0.0000E+00 | 5.4671E-02 | -2.1024E-02 | 7.3330E-03 | -1.7645E-03 | 2.6747E-04 | -2.3014E-05 | 8.5499E-07 | 0.0000E+00 |
| S2 | 0.0000E+00 | -5.6015E-02 | 1.7977E-02 | -6.4753E-03 | 1.9494E-03 | -3.6560E-04 | 3.6462E-05 | -1.4539E-06 | 0.0000E+00 |
| S3 | 0.0000E+00 | -2.8472E-02 | -8.9490E-02 | 2.3047E-01 | -4.0773E-01 | 3.4171E-01 | -1.2991E-01 | 1.8549E-02 | 0.0000E+00 |
| S4 | 0.0000E+00 | 2.2176E-01 | -3.2794E-01 | 1.7369E+00 | -5.9560E+00 | 1.1791E+01 | -1.2349E+01 | 5.5331E+00 | 0.0000E+00 |
| S5 | 0.0000E+00 | 6.6604E-03 | -8.9353E-02 | 5.6756E-02 | 3.6261E-01 | -1.7113E+00 | 2.5177E+00 | -1.3713E+00 | 0.0000E+00 |
| S6 | 0.0000E+00 | -2.2003E-01 | -1.1416E-01 | 5.7782E-01 | -1.1501E+00 | 1.2850E+00 | -7.9287E-01 | 1.8464E-01 | 0.0000E+00 |
| S7 | -2.0671E-01 | -3.5325E-02 | -8.0370E-02 | 3.8678E-01 | -2.5181E-01 | -9.3801E-02 | 1.4358E-01 | -3.5169E-02 | 0.0000E+00 |
| S8 | -2.3894E-01 | 3.9034E-01 | -1.9631E+00 | 5.3676E+00 | -7.9125E+00 | 6.4899E+00 | -2.7961E+00 | 4.9357E-01 | 0.0000E+00 |
| S9 | 2.4149E-02 | -7.5618E-01 | 2.4135E+00 | -3.1467E+00 | 1.4463E+00 | 5.3808E-01 | -7.7997E-01 | 2.4689E-01 | -1.8704E-02 |
| S10 | -1.2284E-01 | -1.9340E-01 | 1.5359E+00 | -2.9000E+00 | 2.9022E+00 | -1.7480E+00 | 6.4545E-01 | -1.3626E-01 | 1.2670E-02 |
| S11 | 1.3499E-02 | -1.4393E-01 | 1.9510E-01 | -1.4484E-01 | 5.2376E-02 | -3.2903E-03 | -3.8190E-03 | 1.1922E-03 | -1.1207E-04 |
| S12 | 2.0413E-01 | -3.8600E-01 | 4.0351E-01 | -2.7674E-01 | 1.2384E-01 | -3.5748E-02 | 6.4258E-03 | -6.5522E-04 | 2.8960E-05 |
| S13 | -3.4592E-01 | 2.2690E-01 | -1.5590E-01 | 8.6989E-02 | -3.5953E-02 | 1.0302E-02 | -1.8622E-03 | 1.8691E-04 | -7.8697E-06 |
| S14 | -2.2070E-01 | 1.3859E-01 | -6.0641E-02 | 1.9078E-02 | -4.3161E-03 | 6.7898E-04 | -7.0301E-05 | 4.2959E-06 | -1.1689E-07 |
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 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. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 5.47mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 2.48 mm, the aperture value Fno of the optical imaging lens is 1.80, and the maximum half field angle Semi-FOV of the optical imaging lens is 46.00 °.
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 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 11
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.31mm, the total length TTL of the optical imaging lens is 5.40mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 2.45 mm, the aperture value Fno of the optical imaging lens is 1.80, and the maximum half field angle Semi-FOV of the optical imaging lens is 46.00 °.
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). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Watch 13
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.1597E-01 | -9.0230E-02 | 7.3426E-02 | -4.8832E-02 | 2.4245E-02 | -8.4271E-03 | 1.8863E-03 | -2.3920E-04 | 1.2904E-05 |
| S2 | -4.8740E-02 | -4.2726E-02 | 7.7790E-02 | -6.0452E-02 | 2.6483E-02 | -6.3973E-03 | 7.1989E-04 | -8.7030E-06 | -3.3259E-06 |
| S3 | -7.2693E-02 | -8.6569E-02 | 3.7868E-01 | -1.6250E+00 | 4.3548E+00 | -6.7124E+00 | 5.9113E+00 | -2.7665E+00 | 5.3373E-01 |
| S4 | 1.9539E-01 | 2.4755E-04 | -3.1361E-01 | 5.1988E-01 | 5.7195E+00 | -2.7147E+01 | 5.3953E+01 | -5.2533E+01 | 2.0979E+01 |
| S5 | 2.4434E-02 | -8.7373E-01 | 9.2474E+00 | -5.8404E+01 | 2.2610E+02 | -5.4155E+02 | 7.7961E+02 | -6.1568E+02 | 2.0399E+02 |
| S6 | -4.3524E-01 | 9.2255E-01 | -3.1422E+00 | 8.0033E+00 | -1.3669E+01 | 1.4856E+01 | -9.6966E+00 | 3.3914E+00 | -4.8088E-01 |
| S7 | -1.8041E-01 | -7.5760E-02 | 3.2342E-01 | -1.2258E+00 | 2.9782E+00 | -3.8898E+00 | 2.8632E+00 | -1.1583E+00 | 2.0443E-01 |
| S8 | -2.6851E-01 | 3.1922E-01 | -1.8661E+00 | 6.7510E+00 | -1.3876E+01 | 1.6457E+01 | -1.1049E+01 | 3.8699E+00 | -5.4445E-01 |
| S9 | 5.3541E-02 | -7.8702E-01 | 2.2725E+00 | -1.7884E+00 | -3.3250E+00 | 8.2499E+00 | -7.1562E+00 | 2.8900E+00 | -4.5525E-01 |
| S10 | -2.3809E-01 | 4.0960E-01 | -1.6776E-01 | 2.0803E-01 | -8.6578E-01 | 1.2307E+00 | -8.1832E-01 | 2.6975E-01 | -3.5960E-02 |
| S11 | 7.9558E-02 | -1.2825E-01 | 2.8579E-03 | 1.5492E-01 | -2.0205E-01 | 1.2823E-01 | -4.4955E-02 | 8.3221E-03 | -6.3487E-04 |
| S12 | 2.9918E-01 | -5.0127E-01 | 4.9991E-01 | -3.3566E-01 | 1.4896E-01 | -4.2775E-02 | 7.6036E-03 | -7.5833E-04 | 3.2374E-05 |
| S13 | -4.8018E-01 | 3.7139E-01 | -2.3937E-01 | 1.2727E-01 | -5.0123E-02 | 1.3638E-02 | -2.3851E-03 | 2.3841E-04 | -1.0283E-05 |
| S14 | -2.9942E-01 | 2.6768E-01 | -1.6035E-01 | 6.2924E-02 | -1.5379E-02 | 2.0990E-03 | -1.1037E-04 | -4.9744E-06 | 5.8944E-07 |
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 includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has negative power, and has a concave 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 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 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 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. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 2.30mm, the total length TTL of the optical imaging lens is 5.70mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens is 3.06mm, the aperture value Fno of the optical imaging lens is 1.80, and the maximum half field angle Semi-FOV of the optical imaging lens is 52.00 °.
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). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Watch 15
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 0.0000E+00 | 5.5199E-02 | -2.0467E-02 | 7.2138E-03 | -1.8001E-03 | 2.8080E-04 | -2.4419E-05 | 9.0563E-07 | 0.0000E+00 |
| S2 | 0.0000E+00 | -6.1900E-02 | 2.4025E-02 | -9.5816E-03 | 2.8262E-03 | -5.0059E-04 | 4.7067E-05 | -1.7894E-06 | 0.0000E+00 |
| S3 | 0.0000E+00 | -8.5396E-03 | -1.6704E-01 | 4.7328E-01 | -8.8590E-01 | 7.9155E-01 | -3.1972E-01 | 4.7530E-02 | 0.0000E+00 |
| S4 | 0.0000E+00 | 2.5476E-01 | -6.5886E-01 | 3.8418E+00 | -1.3647E+01 | 2.7240E+01 | -2.8503E+01 | 1.2529E+01 | 0.0000E+00 |
| S5 | 0.0000E+00 | 9.6906E-03 | -1.0354E-01 | 2.3539E-01 | -3.4699E-01 | -2.0804E-01 | 9.3278E-01 | -6.8343E-01 | 0.0000E+00 |
| S6 | 0.0000E+00 | -1.9131E-01 | -1.5314E-01 | 5.1595E-01 | -9.2111E-01 | 1.0420E+00 | -6.8928E-01 | 1.6980E-01 | 0.0000E+00 |
| S7 | -1.7312E-01 | -1.3246E-01 | 1.1653E-01 | -3.3748E-01 | 1.5565E+00 | -2.3643E+00 | 1.5256E+00 | -3.5842E-01 | 0.0000E+00 |
| S8 | -2.2638E-01 | 5.3114E-01 | -3.5496E+00 | 1.1231E+01 | -1.8463E+01 | 1.6516E+01 | -7.6400E+00 | 1.4333E+00 | 0.0000E+00 |
| S9 | 7.7982E-02 | -1.1162E+00 | 3.3899E+00 | -4.0217E+00 | 8.1616E-01 | 2.3843E+00 | -2.2250E+00 | 7.6373E-01 | -9.6729E-02 |
| S10 | -1.3199E-01 | -2.1622E-01 | 1.9246E+00 | -4.1126E+00 | 4.7432E+00 | -3.3263E+00 | 1.4299E+00 | -3.4787E-01 | 3.6653E-02 |
| S11 | -7.2216E-03 | -6.3013E-02 | 7.1422E-02 | -4.7506E-02 | 8.2778E-03 | 9.2615E-03 | -6.3951E-03 | 1.6067E-03 | -1.4886E-04 |
| S12 | 1.6583E-01 | -3.3320E-01 | 3.6276E-01 | -2.7326E-01 | 1.3863E-01 | -4.5953E-02 | 9.5059E-03 | -1.1096E-03 | 5.5579E-05 |
| S13 | -3.3508E-01 | 2.1688E-01 | -1.4767E-01 | 8.1648E-02 | -3.3406E-02 | 9.4711E-03 | -1.6947E-03 | 1.6860E-04 | -7.0489E-06 |
| S14 | -2.1919E-01 | 1.4852E-01 | -7.2501E-02 | 2.5051E-02 | -5.9827E-03 | 9.6630E-04 | -1.0216E-04 | 6.4449E-06 | -1.8430E-07 |
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.
In summary, examples 1 to 8 each satisfy the relationship shown in table 17.
TABLE 17
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.
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 (23)
1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having an optical power;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens having a negative optical power;
a sixth lens having optical power;
a seventh lens having a refractive power, an object side surface of which is convex; and
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 sum Σ ETP of the thicknesses of the first lens to the seventh lens at 1/2EPD height and parallel to the optical axis and the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens satisfy: sigma ETP/TTL is less than 0.6.
2. The optical imaging lens of claim 1, wherein the combined focal length f12 of the first and second lenses and the effective focal length f1 of the first lens satisfy: 2 < f12/f1 < 15.
3. The optical imaging lens of claim 1, wherein a center thickness CT3 of the third lens on the optical axis and a separation distance T34 of the third lens and the fourth lens on the optical axis satisfy: 1 < CT3/T34 < 6.
4. The optical imaging lens of claim 1, wherein the maximum field angle FOV of the optical imaging lens satisfies: FOV > 90 deg.
5. The optical imaging lens of claim 1, wherein the radius of curvature R1 of the object side surface of the first lens and the effective focal length f1 of the first lens satisfy: r1/f1 is more than 1.0 and less than 6.0.
6. The optical imaging lens of claim 1, wherein a distance SAG41 on the optical axis from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens satisfies: 0 < (SAG42+ SAG41)/(SAG42-SAG41) < 4.0.
7. The optical imaging lens of claim 1, wherein the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens satisfy: 0 < f5/(R9+ R10) < 2.
8. The optical imaging lens of claim 1, wherein the central thickness CT3 of the third lens on the optical axis and the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis satisfy: CT3/TTL < 0.13.
9. The optical imaging lens of claim 1, wherein a sum Σ AT of a distance TD on the optical axis from an object side surface of the first lens to an image side surface of the seventh lens and a separation distance on the optical axis from any two adjacent lenses of the first lens to the seventh lens satisfies: sigma AT/TD is less than 0.4.
10. 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 is less than or equal to 1.8.
11. The optical imaging lens of claim 1, wherein a sum Σ ET of edge thicknesses of the first to seventh lenses satisfies: e < 3 mm.
12. The optical imaging lens of claim 1, further comprising an optical stop located between the second lens and the third lens.
13. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having an optical power;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens having a negative optical power;
a sixth lens having optical power;
a seventh lens having a refractive power, an object side surface of which is convex; and
a sum Σ ET of edge thicknesses of the first lens to the seventh lens satisfies: e, less than 3 mm;
the sum Σ ETP of the thicknesses of the first lens to the seventh lens at 1/2EPD height and parallel to the optical axis and the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens satisfy: sigma ETP/TTL is less than 0.6.
14. The optical imaging lens of claim 13, wherein the combined focal length f12 of the first and second lenses and the effective focal length f1 of the first lens satisfy: 2 < f12/f1 < 15.
15. The optical imaging lens of claim 13, wherein a center thickness CT3 of the third lens on the optical axis and a separation distance T34 of the third lens and the fourth lens on the optical axis satisfy: 1 < CT3/T34 < 6.
16. The optical imaging lens of claim 13, wherein the maximum field angle FOV of the optical imaging lens satisfies: FOV > 90 deg.
17. The optical imaging lens of claim 13, wherein the radius of curvature R1 of the object side surface of the first lens and the effective focal length f1 of the first lens satisfy: r1/f1 is more than 1.0 and less than 6.0.
18. The optical imaging lens of claim 13, wherein a distance SAG41 on the optical axis from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens satisfies: 0 < (SAG42+ SAG41)/(SAG42-SAG41) < 4.0.
19. The optical imaging lens of claim 13, wherein the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens satisfy: 0 < f5/(R9+ R10) < 2.
20. The optical imaging lens of claim 13, wherein the central thickness CT3 of the third lens on the optical axis and the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis satisfy: CT3/TTL < 0.13.
21. The optical imaging lens of claim 13, wherein a sum Σ AT of a distance TD on the optical axis from an object side surface of the first lens to an image side surface of the seventh lens and a separation distance on the optical axis between any two adjacent lenses of the first lens to the seventh lens satisfies: sigma AT/TD is less than 0.4.
22. The optical imaging lens of claim 13, 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 is less than or equal to 1.8.
23. The optical imaging lens of claim 13, further comprising an optical stop, the optical stop being located between the second lens and the third lens.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135103A1 (en) * | 2020-12-25 | 2022-06-30 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| US11982875B2 (en) | 2020-05-29 | 2024-05-14 | Largan Precision Co., Ltd. | Image capturing lens assembly, imaging apparatus and electronic device |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11982875B2 (en) | 2020-05-29 | 2024-05-14 | Largan Precision Co., Ltd. | Image capturing lens assembly, imaging apparatus and electronic device |
| WO2022135103A1 (en) * | 2020-12-25 | 2022-06-30 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
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