CN211669429U - Optical imaging lens - Google Patents
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- CN211669429U CN211669429U CN202020176365.0U CN202020176365U CN211669429U CN 211669429 U CN211669429 U CN 211669429U CN 202020176365 U CN202020176365 U CN 202020176365U CN 211669429 U CN211669429 U CN 211669429U
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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 focal power, an object-side surface of which is convex; the image side surface of the second lens is a concave surface; a third lens having optical power; a fourth lens having an optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and a sixth lens having a negative refractive power, an object-side surface of which is convex. The combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens satisfy that: f12/f is more than 0.5 and less than or equal to 1.5.
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
With the gradual popularization of portable electronic products such as smart phones, the quality requirements of people for photographing the portable electronic products such as the smart phones are higher and higher. As the performance of a Charge Coupled Device (CCD) and a Complementary Metal Oxide Semiconductor (CMOS) image sensor is improved and the size thereof is reduced, accordingly, the imaging lens also satisfies the requirements for high pixel and miniaturization.
An imaging lens capable of achieving good imaging quality on the basis of ensuring miniaturization has become a target pursued by manufacturers of portable electronic products such as numerous mobile phones.
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: a first lens having a focal power, an object-side surface of which is convex; the image side surface of the second lens is a concave surface; a third lens having optical power; a fourth lens having an optical power; a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and a sixth lens having a negative refractive power, an object-side surface of which is convex.
In one embodiment, at least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface.
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 < 2.
In one embodiment, the total effective focal length f of the optical imaging lens and half of the maximum field angle of the optical imaging lens may satisfy: tan (HFOV) x f > 4.58 mm.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: f6/f < -1.44.
In one embodiment, the maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy: 0.6 < DT31/DT21 < 1.
In one embodiment, the effective focal length f1 of the first lens and the radius of curvature R1 of the object side of the first lens may satisfy: r1/f1 is more than 0.2 and less than 0.6.
In one embodiment, a distance SAG51 on the optical axis from the intersection point of the object-side surface of the fifth lens and the optical axis to the effective radius vertex of the object-side surface of the fifth lens to a distance SAG52 on the optical axis from the intersection point of the image-side surface of the fifth lens and the optical axis to the effective radius vertex of the image-side surface of the fifth lens may satisfy: 0.1 < SAG51/SAG52 is less than or equal to 0.63.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens may satisfy: f/f5 is more than 0 and less than 0.4.
In one embodiment, the effective focal length f2 of the second lens, 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 may satisfy: -1.2 < f2/(R3+ R4) < -0.6.
In one embodiment, a radius of curvature R11 of an object-side surface of the sixth lens element, a radius of curvature R12 of an image-side surface of the sixth lens element, and a distance TTL on an optical axis from the object-side surface of the first lens element to an imaging surface of the optical imaging lens may satisfy: 0.8 < TTL/(R11+ R12) < 1.3.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: (R10-R9)/(R10+ R9) is less than or equal to 0.13.
In one embodiment, the separation distance T12 between the first lens and the second lens on the optical axis and the separation distance T23 between the second lens and the third lens on the optical axis may satisfy: 0.14 < T12/T23 < 0.6.
In one embodiment, the central thickness CT3 of the third lens and the central thickness CT4 of the fourth lens may satisfy: 0.4 < CT4/CT3 < 1.2.
In one embodiment, the central thickness CT1 of the first lens, the central thickness CT5 of the fifth lens, the central thickness CT6 of the sixth lens, 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 may satisfy: 0 < (CT1+ CT5+ CT6)/TTL is less than or equal to 0.36.
In one embodiment, the combined focal length f12 of the first and second lenses and the total effective focal length f of the optical imaging lens may satisfy: f12/f is more than 0.5 and less than or equal to 1.5.
The optical imaging lens is applicable to portable electronic products and has the advantages of miniaturization and good imaging quality through reasonable distribution focal power and optimization of optical parameters.
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 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; and
fig. 18A to 18D 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 9.
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 six lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, respectively. The six lenses are arranged along the optical axis in sequence from the object side to the image side. Any adjacent two lenses of the first lens to the sixth lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have a positive or negative optical power, and the object-side surface thereof may be convex; the second lens can have negative focal power, and the image side surface of the second lens can be concave; the third lens may have a positive optical power or a negative optical power; the fourth lens may have a positive power or a negative power; the fifth lens element has positive focal power, and has a convex object-side surface and a concave image-side surface; the sixth lens element may have a negative power and the 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. Satisfying f/EPD < 2, the optical system can better correct the primary aberration, the system has good imaging quality and lower sensitivity, and the system is easy to be injection molded and assembled with higher yield.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: tan (HFOV) xf > 4.58mm, where f is the total effective focal length of the optical imaging lens and HFOV is half of the maximum field angle of the optical imaging lens. The requirement of tan (HFOV) xf > 4.58mm can enable the optical system to better correct the primary aberration, enable the system to have good imaging quality and lower sensitivity, and enable the system to be easily injection-molded and assembled with higher yield.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f6/f < -1.44, where f is the total effective focal length of the optical imaging lens, and f6 is the effective focal length of the sixth lens. More specifically, f6 and f further satisfy: f6/f < -1.60. Satisfying f6/f < -1.44 can make the optical system better correct the primary aberration, make the system have good imaging quality and lower sensitivity, make the system easy to be injection molded and assembled with higher yield.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.6 < DT31/DT21 < 1, where DT31 is the maximum effective radius of the object-side surface of the third lens and DT21 is the maximum effective radius of the object-side surface of the second lens. More specifically, DT31 and DT21 further satisfy: 0.8 < DT31/DT21 < 0.9. The optical imaging lens meets the requirement that DT31/DT21 is more than 0.6 and less than 1, and is favorable for enabling the spatial distribution of the optical imaging lens to be more reasonable on the premise of realizing a large image plane.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < R1/f1 < 0.6, wherein f1 is the effective focal length of the first lens and R1 is the radius of curvature of the object side of the first lens. More specifically, R1 and f1 may further satisfy: r1/f1 is more than 0.4 and less than 0.5. The requirement that R1/f1 is more than 0.2 and less than 0.6 is met, the performance of an optical system can be ensured, the tolerance sensitivity is reduced, and the optical system has better mass production feasibility.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.1 & lt SAG51/SAG52 & lt 0.63, wherein SAG51 is the distance on the optical axis from the intersection point of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and SAG52 is the distance on the optical axis from the intersection point of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens. More specifically, SAG51 and SAG52 further may satisfy: 0.5 & lt SAG51/SAG52 & lt, 0.63. The requirement that SAG51/SAG52 is more than 0.1 and less than or equal to 0.63 is met, the bending of the lens is favorably limited, and the manufacturing and forming difficulty of the lens is reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < f/f5 < 0.4, where f is the total effective focal length of the optical imaging lens, and f5 is the effective focal length of the fifth lens. More specifically, f and f5 further satisfy: f/f5 is more than 0.1 and less than 0.3. Satisfying 0 < f/f5 < 0.4, not only is beneficial to the reasonable distribution of the focal power of each lens on the space, but also is beneficial to reducing the aberration of the optical imaging lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.2 < f2/(R3+ R4) < -0.6, wherein f2 is the effective focal length of the second lens, R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, f2, R3, and R4 may further satisfy: -1.1 < f2/(R3+ R4) < -0.8. Satisfies f2/(R3+ R4) < -0.6 which is more than-1.2, can avoid the second lens from bending too much, and is beneficial to processing and molding.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.8 < TTL/(R11+ R12) < 1.3, wherein R11 is a radius of curvature of an object-side surface of the sixth lens element, R12 is a radius of curvature of an image-side surface of the sixth lens element, and TTL is a distance on an optical axis from the object-side surface of the first lens element to an imaging surface of the optical imaging lens. More specifically, TTL, R11, and R12 may further satisfy: TTL/(R11+ R12) < 1.1 < 1.0. The lens meets the condition that TTL/(R11+ R12) is more than 0.8 and less than 1.3, can effectively ensure the bending degree of the first lens, and is beneficial to the processing and forming of the first lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: (R10-R9)/(R10+ R9) ≦ 0.13, wherein R9 is a radius of curvature of an object-side surface of the fifth lens, and R10 is a radius of curvature of an image-side surface of the fifth lens. The requirement that (R10-R9)/(R10+ R9) is less than or equal to 0.13 is met, the contribution of astigmatism of the object side surface and the image side surface of the fifth lens can be effectively controlled, and the image quality of the middle view field and the aperture zone is effectively and reasonably controlled.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.14 < T12/T23 < 0.6, wherein T12 is the distance of the first lens and the second lens from each other on the optical axis, and T23 is the distance of the second lens and the third lens from each other on the optical axis. More specifically, T12 and T23 may further satisfy: 0.3 < T12/T23 < 0.5. Meets the requirements of T12/T23 of 0.14-0.6, and can better ensure the processability and manufacturability of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.4 < CT4/CT3 < 1.2, where CT3 is the center thickness of the third lens and CT4 is the center thickness of the fourth lens. More specifically, CT4 and CT3 further satisfy: 0.8 < CT4/CT3 < 1.1. The requirement that the CT4/CT3 is more than 0.4 and less than 1.2 is met, and the axial chromatic spherical aberration of the optical system is favorably corrected, so that better imaging performance is obtained.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < (CT1+ CT5+ CT6)/TTL is less than or equal to 0.36, wherein CT1 is the central thickness of the first lens, CT5 is the central thickness of the fifth lens, CT6 is the central thickness of the sixth lens, 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. More specifically, CT1, CT5, CT6 and TTL further satisfy: 0.3 < (CT1+ CT5+ CT6)/TTL is less than or equal to 0.36. Satisfies 0 < (CT1+ CT5+ CT6)/TTL < 0.36, can effectively ensure the thickness of each optical component, and can better correct distortion and chromatic aberration.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f12/f is more than 0.5 and less than or equal to 1.5, wherein f12 is the combined focal length of the first lens and the second lens, and f is the total effective focal length of the optical imaging lens. More specifically, f12 and f further satisfy: f12/f is more than 1.0 and less than or equal to 1.2. F12/f is more than 0.5 and less than or equal to 1.5, which is beneficial to the reasonable distribution of the focal power of each lens in space and the reduction of the aberration of the optical imaging lens.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface. The application provides an optical imaging lens with characteristics of an ultra-large aperture, a large image plane, ultra-thin and good imaging quality. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more beneficial to production and processing.
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 sixth 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 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, and the sixth lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth 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 six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six 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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
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 5.56mm, 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 S15 of the optical imaging lens) is 6.11mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, the half HFOV of the maximum field angle of the optical imaging lens is 40.78 °, and the aperture value Fno of the optical imaging lens is 1.88.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 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 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 S12 used in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.9647E-03 | 9.2367E-03 | -2.6472E-02 | 4.6095E-02 | -4.9734E-02 | 3.3492E-02 | -1.3831E-02 | 3.2155E-03 | -3.3026E-04 |
| S2 | -2.0080E-02 | 1.7840E-02 | -1.3237E-02 | 1.6949E-02 | -2.1777E-02 | 1.6972E-02 | -7.7097E-03 | 1.8805E-03 | -1.9168E-04 |
| S3 | -5.3457E-02 | 4.2246E-02 | 7.7523E-03 | -5.2284E-02 | 7.6902E-02 | -6.8843E-02 | 3.8462E-02 | -1.2017E-02 | 1.6061E-03 |
| S4 | -3.1187E-02 | 6.8881E-02 | -1.4458E-01 | 3.7709E-01 | -6.2412E-01 | 6.2667E-01 | -3.6787E-01 | 1.1492E-01 | -1.4132E-02 |
| S5 | -4.7631E-02 | 2.8993E-02 | -1.0185E-01 | 2.1411E-01 | -3.3202E-01 | 3.4275E-01 | -2.2220E-01 | 8.0798E-02 | -1.2462E-02 |
| S6 | -5.7131E-02 | 5.0157E-02 | -1.0112E-01 | 1.3793E-01 | -1.3511E-01 | 8.3131E-02 | -2.7718E-02 | 3.2445E-03 | 2.9885E-04 |
| S7 | -7.8491E-02 | 4.7672E-03 | 1.1277E-01 | -2.6542E-01 | 3.3057E-01 | -2.4758E-01 | 1.1112E-01 | -2.7639E-02 | 2.9215E-03 |
| S8 | -7.7426E-02 | 1.7965E-02 | 2.5246E-02 | -4.2974E-02 | 3.5667E-02 | -1.6447E-02 | 4.2203E-03 | -5.6627E-04 | 3.1064E-05 |
| S9 | -2.6942E-02 | -7.3058E-03 | 3.0410E-03 | -2.6990E-03 | 1.3324E-03 | -3.1817E-04 | 4.0459E-05 | -2.6731E-06 | 7.2628E-08 |
| S10 | -3.3905E-02 | 1.7976E-02 | -1.3480E-02 | 5.3058E-03 | -1.3130E-03 | 2.1400E-04 | -2.2133E-05 | 1.3009E-06 | -3.2720E-08 |
| S11 | -1.7948E-01 | 6.4763E-02 | -1.6252E-02 | 2.9964E-03 | -3.9230E-04 | 3.4910E-05 | -1.9977E-06 | 6.6191E-08 | -9.6495E-10 |
| S12 | -1.5835E-01 | 6.1466E-02 | -1.9998E-02 | 4.5852E-03 | -6.8949E-04 | 6.5925E-05 | -3.8464E-06 | 1.2466E-07 | -1.7182E-09 |
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 negative power, and has a concave object-side surface S7 and a convex 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.52mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.12 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 | -1.6741E-03 | 9.2523E-03 | -2.7804E-02 | 5.0623E-02 | -5.6637E-02 | 3.9234E-02 | -1.6537E-02 | 3.8980E-03 | -4.0303E-04 |
| S2 | -1.8522E-02 | 1.9728E-02 | -3.3766E-02 | 6.7868E-02 | -9.0052E-02 | 7.1434E-02 | -3.3393E-02 | 8.4642E-03 | -8.9686E-04 |
| S3 | -5.0962E-02 | 2.9032E-02 | 3.8672E-02 | -1.1433E-01 | 1.6584E-01 | -1.4968E-01 | 8.2736E-02 | -2.5403E-02 | 3.3316E-03 |
| S4 | -2.7775E-02 | 5.3973E-02 | -9.8320E-02 | 2.4854E-01 | -3.7402E-01 | 3.1776E-01 | -1.3560E-01 | 1.7790E-02 | 3.1993E-03 |
| S5 | -4.2533E-02 | -1.6060E-03 | -1.5871E-02 | 1.1346E-02 | 3.1501E-03 | -3.2992E-02 | 4.6333E-02 | -2.8610E-02 | 6.6863E-03 |
| S6 | -4.4115E-02 | 7.5109E-03 | -7.6228E-03 | -5.1734E-02 | 1.4905E-01 | -2.0217E-01 | 1.5268E-01 | -6.1237E-02 | 1.0179E-02 |
| S7 | -6.7874E-02 | -4.8697E-02 | 2.4293E-01 | -5.0928E-01 | 6.4430E-01 | -5.0536E-01 | 2.4127E-01 | -6.4459E-02 | 7.3571E-03 |
| S8 | -7.1104E-02 | -5.5883E-03 | 6.4384E-02 | -8.4650E-02 | 6.5561E-02 | -2.9727E-02 | 7.6735E-03 | -1.0479E-03 | 5.8920E-05 |
| S9 | -2.5182E-02 | -1.3474E-02 | 8.9264E-03 | -5.5040E-03 | 2.1491E-03 | -4.7184E-04 | 5.8636E-05 | -3.8924E-06 | 1.0776E-07 |
| S10 | -3.3202E-02 | 1.3630E-02 | -1.0638E-02 | 4.4043E-03 | -1.1719E-03 | 2.0719E-04 | -2.3049E-05 | 1.4353E-06 | -3.7730E-08 |
| S11 | -1.7652E-01 | 6.1725E-02 | -1.4843E-02 | 2.6194E-03 | -3.3018E-04 | 2.8521E-05 | -1.5972E-06 | 5.2153E-08 | -7.5353E-10 |
| S12 | -1.5530E-01 | 5.9246E-02 | -1.9090E-02 | 4.3698E-03 | -6.5515E-04 | 6.2152E-05 | -3.5813E-06 | 1.1424E-07 | -1.5466E-09 |
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 concave object-side surface S7 and a convex 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.52mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.05 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 | -1.1266E-03 | 4.4829E-03 | -1.1240E-02 | 1.7882E-02 | -1.8063E-02 | 1.1583E-02 | -4.7142E-03 | 1.1243E-03 | -1.2758E-04 |
| S2 | -1.8988E-02 | 1.5897E-02 | -1.0331E-02 | 1.5799E-02 | -2.6390E-02 | 2.5280E-02 | -1.3816E-02 | 4.0319E-03 | -4.9078E-04 |
| S3 | -5.4715E-02 | 4.9109E-02 | -2.8394E-02 | 4.6432E-02 | -7.8869E-02 | 7.9735E-02 | -4.5975E-02 | 1.4302E-02 | -1.8586E-03 |
| S4 | -3.2564E-02 | 6.6634E-02 | -1.2579E-01 | 3.0642E-01 | -4.6478E-01 | 4.1012E-01 | -1.9221E-01 | 3.6340E-02 | 8.9879E-04 |
| S5 | -4.6695E-02 | 7.7507E-03 | 8.5172E-03 | -1.6340E-01 | 4.6406E-01 | -6.9726E-01 | 5.9488E-01 | -2.7233E-01 | 5.2101E-02 |
| S6 | -4.8312E-02 | 7.0360E-03 | 2.8730E-02 | -1.4644E-01 | 2.6877E-01 | -2.8449E-01 | 1.7972E-01 | -6.2937E-02 | 9.4409E-03 |
| S7 | -6.9572E-02 | -4.0387E-02 | 2.3307E-01 | -5.0691E-01 | 6.5382E-01 | -5.2100E-01 | 2.5198E-01 | -6.8015E-02 | 7.8306E-03 |
| S8 | -7.0676E-02 | -4.9248E-03 | 6.3236E-02 | -8.4758E-02 | 6.6251E-02 | -3.0115E-02 | 7.7699E-03 | -1.0588E-03 | 5.9323E-05 |
| S9 | -2.7393E-02 | -9.4124E-03 | 4.4282E-03 | -2.8302E-03 | 1.2041E-03 | -2.6818E-04 | 3.2513E-05 | -2.0638E-06 | 5.4029E-08 |
| S10 | -3.5506E-02 | 1.8046E-02 | -1.3977E-02 | 5.8122E-03 | -1.5280E-03 | 2.6162E-04 | -2.7922E-05 | 1.6677E-06 | -4.2210E-08 |
| S11 | -1.7946E-01 | 6.4899E-02 | -1.6344E-02 | 3.0281E-03 | -3.9837E-04 | 3.5544E-05 | -2.0316E-06 | 6.6921E-08 | -9.6542E-10 |
| S12 | -1.5712E-01 | 6.0545E-02 | -1.9583E-02 | 4.4502E-03 | -6.5835E-04 | 6.1519E-05 | -3.4924E-06 | 1.0986E-07 | -1.4686E-09 |
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.52mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.14 °, and an aperture value Fno of the optical imaging lens is 1.88.
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
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 concave object-side surface S7 and a convex 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.54mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 39.95 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 | -1.4118E-03 | 6.2110E-03 | -1.5808E-02 | 2.4824E-02 | -2.4293E-02 | 1.4912E-02 | -5.7171E-03 | 1.2704E-03 | -1.3424E-04 |
| S2 | -2.1055E-02 | 2.2263E-02 | -2.9068E-02 | 5.4666E-02 | -7.5540E-02 | 6.2894E-02 | -3.0911E-02 | 8.2789E-03 | -9.3413E-04 |
| S3 | -5.5558E-02 | 5.2053E-02 | -2.9565E-02 | 4.2251E-02 | -6.8093E-02 | 6.6301E-02 | -3.6613E-02 | 1.0888E-02 | -1.3494E-03 |
| S4 | -2.7444E-02 | 3.9901E-02 | 3.2724E-03 | -6.6359E-02 | 1.9013E-01 | -2.9870E-01 | 2.6724E-01 | -1.2625E-01 | 2.4907E-02 |
| S5 | -4.4177E-02 | -2.4761E-02 | 1.6283E-01 | -5.5217E-01 | 1.0549E+00 | -1.2324E+00 | 8.6886E-01 | -3.4003E-01 | 5.6933E-02 |
| S6 | -7.0837E-02 | 7.2194E-02 | -1.4444E-01 | 2.0921E-01 | -2.1648E-01 | 1.4244E-01 | -5.4035E-02 | 9.7580E-03 | -4.0818E-04 |
| S7 | -8.3509E-02 | 1.1168E-03 | 1.4240E-01 | -3.4750E-01 | 4.5865E-01 | -3.6630E-01 | 1.7572E-01 | -4.6725E-02 | 5.2768E-03 |
| S8 | -7.3959E-02 | 8.5617E-03 | 4.1611E-02 | -6.1216E-02 | 4.9994E-02 | -2.3401E-02 | 6.1543E-03 | -8.4833E-04 | 4.7752E-05 |
| S9 | -2.5151E-02 | -1.0560E-02 | 4.3986E-03 | -2.3752E-03 | 9.7102E-04 | -2.1361E-04 | 2.5644E-05 | -1.6103E-06 | 4.1656E-08 |
| S10 | -2.2024E-02 | 6.2323E-03 | -7.3684E-03 | 3.3995E-03 | -9.2969E-04 | 1.6277E-04 | -1.7604E-05 | 1.0565E-06 | -2.6639E-08 |
| S11 | -1.7867E-01 | 6.4407E-02 | -1.6309E-02 | 3.0716E-03 | -4.1364E-04 | 3.7855E-05 | -2.2160E-06 | 7.4505E-08 | -1.0920E-09 |
| S12 | -1.6893E-01 | 6.6941E-02 | -2.2072E-02 | 5.0957E-03 | -7.6668E-04 | 7.2967E-05 | -4.2198E-06 | 1.3510E-07 | -1.8346E-09 |
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 concave object-side surface S7 and a convex 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.52mm, the total length TTL of the optical imaging lens is 6.19mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.21 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.53mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.04 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 | -1.4799E-03 | 7.0124E-03 | -1.8079E-02 | 2.9129E-02 | -2.9479E-02 | 1.8833E-02 | -7.5123E-03 | 1.7238E-03 | -1.8246E-04 |
| S2 | -2.1798E-02 | 2.3999E-02 | -3.4018E-02 | 6.4768E-02 | -8.8457E-02 | 7.3176E-02 | -3.5854E-02 | 9.5938E-03 | -1.0833E-03 |
| S3 | -5.5898E-02 | 5.1023E-02 | -2.7650E-02 | 4.0710E-02 | -6.8644E-02 | 6.8986E-02 | -3.9187E-02 | 1.1981E-02 | -1.5300E-03 |
| S4 | -2.6540E-02 | 3.4749E-02 | 2.8413E-02 | -1.4831E-01 | 3.5908E-01 | -5.1661E-01 | 4.3882E-01 | -2.0158E-01 | 3.9079E-02 |
| S5 | -4.5811E-02 | 1.4076E-03 | 4.8552E-02 | -2.7620E-01 | 6.4931E-01 | -8.6518E-01 | 6.7223E-01 | -2.8466E-01 | 5.1099E-02 |
| S6 | -6.9762E-02 | 7.0362E-02 | -1.5680E-01 | 2.4850E-01 | -2.7477E-01 | 1.9316E-01 | -7.9811E-02 | 1.6818E-02 | -1.2049E-03 |
| S7 | -8.3118E-02 | 4.5636E-03 | 1.2201E-01 | -2.9656E-01 | 3.8845E-01 | -3.0760E-01 | 1.4623E-01 | -3.8513E-02 | 4.3028E-03 |
| S8 | -7.5800E-02 | 1.2947E-02 | 3.3285E-02 | -4.9939E-02 | 4.0791E-02 | -1.9023E-02 | 4.9627E-03 | -6.7623E-04 | 3.7530E-05 |
| S9 | -2.6368E-02 | -9.2452E-03 | 3.9313E-03 | -2.3165E-03 | 9.7404E-04 | -2.1471E-04 | 2.5611E-05 | -1.5907E-06 | 4.0547E-08 |
| S10 | -2.6560E-02 | 1.0039E-02 | -9.1836E-03 | 3.9547E-03 | -1.0471E-03 | 1.8020E-04 | -1.9347E-05 | 1.1602E-06 | -2.9361E-08 |
| S11 | -1.7850E-01 | 6.3968E-02 | -1.5893E-02 | 2.9123E-03 | -3.8198E-04 | 3.4290E-05 | -1.9867E-06 | 6.6669E-08 | -9.8219E-10 |
| S12 | -1.6505E-01 | 6.4922E-02 | -2.1323E-02 | 4.9200E-03 | -7.4034E-04 | 7.0404E-05 | -4.0622E-06 | 1.2952E-07 | -1.7479E-09 |
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 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 concave 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 positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.53mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.05 °, and an aperture value Fno of the optical imaging lens is 1.88.
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
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 includes, in order from an object side to an image side: 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 filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has 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 negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the optical imaging lens is 5.52mm, the total length TTL of the optical imaging lens is 6.20mm, a half ImgH of a diagonal length of an effective pixel region on the imaging surface S15 of the optical imaging lens is 4.72mm, a half HFOV of a maximum field angle of the optical imaging lens is 40.16 °, and an aperture value Fno of the optical imaging lens is 1.88.
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 18 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 17
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.9647E-03 | 9.2367E-03 | -2.6472E-02 | 4.6095E-02 | -4.9734E-02 | 3.3492E-02 | -1.3831E-02 | 3.2155E-03 | -3.3026E-04 |
| S2 | -2.0080E-02 | 1.7840E-02 | -1.3237E-02 | 1.6949E-02 | -2.1777E-02 | 1.6972E-02 | -7.7097E-03 | 1.8805E-03 | -1.9168E-04 |
| S3 | -5.3457E-02 | 4.2246E-02 | 7.7523E-03 | -5.2284E-02 | 7.6902E-02 | -6.8843E-02 | 3.8462E-02 | -1.2017E-02 | 1.6061E-03 |
| S4 | -3.1187E-02 | 6.8881E-02 | -1.4458E-01 | 3.7709E-01 | -6.2412E-01 | 6.2667E-01 | -3.6787E-01 | 1.1492E-01 | -1.4132E-02 |
| S5 | -4.7631E-02 | 2.8993E-02 | -1.0185E-01 | 2.1411E-01 | -3.3202E-01 | 3.4275E-01 | -2.2220E-01 | 8.0798E-02 | -1.2462E-02 |
| S6 | -5.7131E-02 | 5.0157E-02 | -1.0112E-01 | 1.3793E-01 | -1.3511E-01 | 8.3131E-02 | -2.7718E-02 | 3.2445E-03 | 2.9885E-04 |
| S7 | -7.8491E-02 | 4.7672E-03 | 1.1277E-01 | -2.6542E-01 | 3.3057E-01 | -2.4758E-01 | 1.1112E-01 | -2.7639E-02 | 2.9215E-03 |
| S8 | -7.7426E-02 | 1.7965E-02 | 2.5246E-02 | -4.2974E-02 | 3.5667E-02 | -1.6447E-02 | 4.2203E-03 | -5.6627E-04 | 3.1064E-05 |
| S9 | -2.6942E-02 | -7.3058E-03 | 3.0410E-03 | -2.6990E-03 | 1.3324E-03 | -3.1817E-04 | 4.0459E-05 | -2.6731E-06 | 7.2628E-08 |
| S10 | -3.3905E-02 | 1.7976E-02 | -1.3480E-02 | 5.3058E-03 | -1.3130E-03 | 2.1400E-04 | -2.2133E-05 | 1.3009E-06 | -3.2720E-08 |
| S11 | -1.7948E-01 | 6.4763E-02 | -1.6252E-02 | 2.9964E-03 | -3.9230E-04 | 3.4910E-05 | -1.9977E-06 | 6.6191E-08 | -9.6495E-10 |
| S12 | -1.5835E-01 | 6.1466E-02 | -1.9998E-02 | 4.5852E-03 | -6.8949E-04 | 6.5925E-05 | -3.8464E-06 | 1.2466E-07 | -1.7182E-09 |
Watch 18
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.
In summary, examples 1 to 9 each satisfy the relationship shown in table 19.
Watch 19
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 (27)
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 focal power, an object-side surface of which is convex;
the image side surface of the second lens is a concave surface;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and
a sixth lens element having a negative refractive power, the object-side surface of which is convex;
the combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens satisfy that: f12/f is more than 0.5 and less than or equal to 1.5.
2. 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.
3. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and half of the maximum field angle HFOV of the optical imaging lens satisfy: tan (HFOV) x f > 4.58 mm.
4. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: f6/f < -1.44.
5. The optical imaging lens of claim 1, wherein the maximum effective radius DT31 of the object side surface of the third lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy: 0.6 < DT31/DT21 < 1.
6. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the radius of curvature R1 of the object side of the first lens satisfy: r1/f1 is more than 0.2 and less than 0.6.
7. The optical imaging lens of claim 1, wherein a distance SAG51 on the optical axis from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of the object-side surface of the fifth lens to a distance SAG52 on the optical axis from an intersection point of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of the image-side surface of the fifth lens satisfies: 0.1 < SAG51/SAG52 is less than or equal to 0.63.
8. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens satisfy: f/f5 is more than 0 and less than 0.4.
9. The optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens, 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: -1.2 < f2/(R3+ R4) < -0.6.
10. The optical imaging lens of claim 1, wherein a radius of curvature R11 of an object-side surface of the sixth lens element, a radius of curvature R12 of an image-side surface of the sixth lens element, and a distance TTL between the object-side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis satisfy: 0.8 < TTL/(R11+ R12) < 1.3.
11. The optical imaging lens of claim 1, wherein the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: (R10-R9)/(R10+ R9) is less than or equal to 0.13.
12. The optical imaging lens according to claim 1, wherein a separation distance T12 between the first lens and the second lens on the optical axis and a separation distance T23 between the second lens and the third lens on the optical axis satisfy: 0.14 < T12/T23 < 0.6.
13. The optical imaging lens of claim 1, wherein the central thickness CT3 of the third lens and the central thickness CT4 of the fourth lens satisfy: 0.4 < CT4/CT3 < 1.2.
14. The optical imaging lens of claim 1, wherein the central thickness CT1 of the first lens, the central thickness CT5 of the fifth lens, the central thickness CT6 of the sixth lens, 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: 0 < (CT1+ CT5+ CT6)/TTL is less than or equal to 0.36.
15. 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 focal power, an object-side surface of which is convex;
the image side surface of the second lens is a concave surface;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and
a sixth lens element having a negative refractive power, the object-side surface of which is convex;
the maximum effective radius DT31 of the object side surface of the third lens and the maximum effective radius DT21 of the object side surface of the second lens meet the following conditions: 0.6 < DT31/DT21 < 1.
16. The optical imaging lens of claim 15 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.
17. The optical imaging lens of claim 15 wherein the total effective focal length f of the optical imaging lens and half of the maximum field angle HFOV of the optical imaging lens satisfy: tan (HFOV) x f > 4.58 mm.
18. The optical imaging lens of claim 15, wherein the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: f6/f < -1.44.
19. The optical imaging lens of claim 15, wherein the effective focal length f1 of the first lens and the radius of curvature R1 of the object side of the first lens satisfy: r1/f1 is more than 0.2 and less than 0.6.
20. The optical imaging lens of claim 15, wherein a distance SAG51 on the optical axis from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of the object-side surface of the fifth lens to a distance SAG52 on the optical axis from an intersection point of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of the image-side surface of the fifth lens satisfies: 0.1 < SAG51/SAG52 is less than or equal to 0.63.
21. The optical imaging lens of claim 15, wherein the total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens satisfy: f/f5 is more than 0 and less than 0.4.
22. The optical imaging lens of claim 15, wherein the effective focal length f2 of the second lens, 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: -1.2 < f2/(R3+ R4) < -0.6.
23. The optical imaging lens of claim 15, wherein a radius of curvature R11 of an object-side surface of the sixth lens element, a radius of curvature R12 of an image-side surface of the sixth lens element, and a distance TTL between the object-side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis satisfy: 0.8 < TTL/(R11+ R12) < 1.3.
24. The optical imaging lens of claim 15, wherein the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: (R10-R9)/(R10+ R9) is less than or equal to 0.13.
25. The optical imaging lens of claim 15, wherein a separation distance T12 between the first lens and the second lens on the optical axis and a separation distance T23 between the second lens and the third lens on the optical axis satisfy: 0.14 < T12/T23 < 0.6.
26. The optical imaging lens of claim 15, wherein the central thickness CT3 of the third lens and the central thickness CT4 of the fourth lens satisfy: 0.4 < CT4/CT3 < 1.2.
27. The optical imaging lens of claim 15, wherein the central thickness CT1 of the first lens, the central thickness CT5 of the fifth lens, the central thickness CT6 of the sixth lens, 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: 0 < (CT1+ CT5+ CT6)/TTL is less than or equal to 0.36.
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