CN109856782B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN109856782B
CN109856782B CN201910276878.0A CN201910276878A CN109856782B CN 109856782 B CN109856782 B CN 109856782B CN 201910276878 A CN201910276878 A CN 201910276878A CN 109856782 B CN109856782 B CN 109856782B
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lens
optical imaging
imaging lens
optical
focal length
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CN109856782A (en
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宋宛玥
张凯元
张伊
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Abstract

The application discloses optical imaging lens, it includes in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens with optical power, the object side surface of which is a convex surface; a third lens with optical power, the object side surface of which is a convex surface; a fourth lens having negative optical power; a fifth lens having optical power. 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 and the total effective focal length f of the optical imaging lens meet the condition that TTL/f is less than or equal to 0.9; and the dispersion coefficient V3 of the third lens and the dispersion coefficient V5 of the fifth lens satisfy 25 < V3-V5 < 35.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including five lenses.
Background
With the trend of ultra-thin portable electronic products such as mobile phones and tablet computers, imaging lenses mounted on the portable electronic products are required to have smaller and smaller volumes. In order to meet miniaturization, it is necessary to reduce the number of lenses of the imaging lens as much as possible, but the resulting lack of freedom in design makes it difficult to meet the market demand for high imaging performance.
The currently rising double-shooting technology can obtain high spatial angle resolution through a long-focus lens, and then high-frequency information enhancement is realized through an image fusion technology. Therefore, the design of the tele lens in the double-shot lens is critical, and especially, the design of the tele lens and the ultra-thin tele lens simultaneously meeting the requirements is more difficult.
Disclosure of Invention
The present application provides an optical imaging lens, e.g., a tele lens, applicable to portable electronic products that may at least address or partially address at least one of the above-mentioned drawbacks of the prior art.
In one aspect, the present application provides an optical imaging lens sequentially including, from an object side to an image side along an optical axis: a first lens having positive optical power; a second lens with optical power, the object side surface of which is a convex surface; a third lens with optical power, the object side surface of which is a convex surface; a fourth lens having negative optical power; a fifth lens having optical power.
In one embodiment, 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 and the total effective focal length f of the optical imaging lens can satisfy TTL/f less than or equal to 0.9.
In one embodiment, the distance T34 between the third lens element and the fourth lens element, the distance T45 between the fourth lens element and the fifth lens element, and the distance TTL between the object side surface of the first lens element and the imaging surface of the optical imaging lens element, may satisfy 0.35 < (t34+t45)/TTL < 0.5.
In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R3 of the object side of the second lens and the radius of curvature R5 of the object side of the third lens may satisfy 3.5 < f/r3+f/R5 < 7.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy 1.3 < f/f1 < 2.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens can satisfy-2.0 < f/f 4. Ltoreq.0.9.
In one embodiment, the effective focal length f1 of the first lens and the combined focal length f23 of the second and third lenses may satisfy f1/|f23| < 0.35.
In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f5 of the fifth lens may satisfy f123/|f5| < 0.5.
In one embodiment, the maximum effective radius DT42 of the image side of the fourth lens and the maximum effective radius DT52 of the image side of the fifth lens may satisfy 0.5 < DT42/DT52 < 0.7.
In one embodiment, the center thickness CT4 of the fourth lens element, the sagittal height SAG42 of the image side surface of the fourth lens element, and the distance T45 between the fourth lens element and the fifth lens element on the optical axis may satisfy (CT 4+ SAG 42)/T45 < 0.5.
In one embodiment, the third lens may have an Abbe number V3 and the fifth lens may have an Abbe number V5 that satisfies 25 < V3-V5 < 35.
In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R4 of the image side of the second lens, the radius of curvature R6 of the image side of the third lens, and the radius of curvature R8 of the image side of the fourth lens may satisfy 0.4.ltoreq.f/(R4+R6+R8) < 1.0.
In one embodiment, the half of the effective pixel area diagonal length ImgH on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens can satisfy ImgH/f < 0.35.
Five lenses are adopted, the focal power, the surface thickness of each lens, the axial spacing between each lens and the like of each lens are reasonably matched and reasonably distributed through lenses made of different materials, and the optical imaging lens has at least one beneficial effect of being ultrathin, high in imaging quality, long in focal length, convenient to process and manufacture and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8;
fig. 17 shows a schematic structural diagram of an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18C show an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the 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 these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the 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 the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are 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, then 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 referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," 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. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "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, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are sequentially arranged from the object side to the image side along the optical axis. In the first lens to the fifth lens, any two adjacent lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have positive optical power; the second lens has positive focal power or negative focal power, and the object side surface of the second lens can be a convex surface; the third lens has positive focal power or negative focal power, and the object side surface of the third lens can be a convex surface; the fourth lens may have negative optical power; the fifth lens has positive optical power or negative optical power.
In an exemplary embodiment, the object-side surface of the first lens may be convex and the image-side surface may be concave. The image side of the second lens may be concave. The image side surface of the third lens may be concave. The image side of the fourth lens may be concave.
In an exemplary embodiment, the optical imaging lens can satisfy a condition that a condition formula TTL/f is less than or equal to 0.9, wherein TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and f is a total effective focal length of the optical imaging lens. More specifically, TTL and f can further satisfy 0.81.ltoreq.TTL/f.ltoreq.0.86. The ratio of the total length of the control system to the effective focal length of the system is within a certain range, so that the system is ensured to have a better shooting function.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.35 < (t34+t45)/TTL < 0.5, where T34 is a distance between the third lens element and the fourth lens element on the optical axis, T45 is a distance between the fourth lens element and the fifth lens element on the optical axis, and TTL is a distance between the object side surface of the first lens element and the imaging surface of the optical imaging lens element on the optical axis. More specifically, T34, T45 and TTL can further satisfy 0.37.ltoreq.T34+T45)/TTL.ltoreq.0.48. Through the combination of proper focal power and the optimization of air intervals, not only the excellent image quality of the optical system is ensured, but also the good processability and miniaturization characteristics of the system are ensured.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.5 < f/r3+f/R5 < 7.0, where f is the total effective focal length of the optical imaging lens, R3 is the radius of curvature of the object side of the second lens, and R5 is the radius of curvature of the object side of the third lens. More specifically, f, R3 and R5 may further satisfy 3.80.ltoreq.f/R3+fR5.ltoreq.6.76. By limiting the curvature radius of the second lens and the third lens within a proper range, the astigmatic quantity of the system can be effectively corrected, and the image quality of the edge view field is further ensured.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.3 < f/f1 < 2.0, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 may further satisfy 1.39.ltoreq.f1.ltoreq.1.89. By restricting the ratio range of the focal length of the first lens to the focal length of the system, the first lens can be used as an optical element with reasonable positive focal power to balance the aberration generated by the optical group member with negative focal power at the back, so that good imaging quality is obtained.
In an exemplary embodiment, the optical imaging lens can satisfy the condition that f/f4 is less than or equal to-2.0 and less than or equal to-0.9, wherein f is the total effective focal length of the optical imaging lens, and f4 is the effective focal length of the fourth lens. More specifically, f and f4 may further satisfy-1.70.ltoreq.f4.ltoreq.0.92. By restricting the ratio range of the focal length of the fourth lens to the focal length of the system, the fourth lens can be used as an optical element with reasonable negative focal power to balance the aberration generated by the optical group member with positive focal power at the front end, so that the purposes of reducing the aberration and improving the imaging quality are achieved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression f1/|f23| < 0.35, where f1 is an effective focal length of the first lens and f23 is a combined focal length of the second lens and the third lens. More specifically, f1 and f23 may further satisfy 0.02.ltoreq.f1/|f23|.ltoreq.0.31. By restricting the ratio range of the combined focal length of the second lens and the third lens to the focal length of the first lens, the second lens and the third lens can be combined to be used as an optical component group with reasonable negative focal power to balance the aberration generated by the first lens with positive focal power in front, so that good imaging quality is obtained.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression f123/|f5| < 0.5, where f123 is a combined focal length of the first lens, the second lens, and the third lens, and f5 is an effective focal length of the fifth lens. More specifically, f123 and f5 may further satisfy 0.03.ltoreq.f123/|f5|.ltoreq.0.41. By restricting the ratio range of the focal length of the fifth lens to the combined focal length of the first lens, the second lens and the third lens, the first lens, the second lens and the third lens can be combined to be used as an optical component group with reasonable positive focal power to balance the aberration of the fifth lens with positive or negative focal power at the back, so that the aberration of the system is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < DT42/DT52 < 0.7, where DT42 is the maximum effective radius of the image side of the fourth lens element and DT52 is the maximum effective radius of the image side of the fifth lens element. More specifically, DT42 and DT52 may further satisfy 0.55+.DT 42/DT 52+.0.63. The ratio of the maximum effective radius of the image side surfaces of the fourth lens and the fifth lens is in a reasonable range, so that the size of the lens can be reduced, the miniaturization of the lens is met, and the resolution is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression (CT 4+ SAG 42)/T45 < 0.5, where CT4 is the center thickness of the fourth lens, SAG42 is the sagittal height of the image side of the fourth lens (i.e., the on-axis distance from the intersection of the image side of the fourth lens and the optical axis to the effective half-caliber vertex of the image side of the fourth lens), and T45 is the separation distance of the fourth lens and the fifth lens on the optical axis. More specifically, CT4, SAG42 and T45 may further satisfy 0.2 < (CT4+SAG42)/T45 < 0.4, for example, 0.25.ltoreq.CT4+SAG42)/T45.ltoreq.0.36. The sagittal height and the center thickness of the image side surface of the fourth lens and the air space of the fourth lens and the fifth lens on the optical axis are restrained within a reasonable range, so that the sensitivity of the system is reduced, and the processing is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 25 < V3-V5 < 35, where V3 is the dispersion coefficient of the third lens and V5 is the dispersion coefficient of the fifth lens. More specifically, V3 and V5 may further satisfy 28 < V3-V5 < 32, for example, v3—v5=30.6. The materials with larger Abbe number difference are selected for the third lens and the fifth lens as much as possible, so that the vertical axis chromatic aberration, the axial chromatic aberration and the chromatic aberration of the system can be strongly corrected, and the image quality of the system is better ensured.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4+.f/(r4+r6+r8) < 1.0, where f is the total effective focal length of the optical imaging lens, R4 is the radius of curvature of the image side of the second lens, R6 is the radius of curvature of the image side of the third lens, and R8 is the radius of curvature of the image side of the fourth lens. More specifically, f, R4, R6 and R8 may further satisfy 0.44.ltoreq.f/(R4+R6+R8). Ltoreq.0.91. By controlling the curvature radius of the image side surfaces of the second lens, the third lens and the fourth lens, the high-order aberration such as third-order astigmatism and fifth-order spherical aberration can be controlled to a certain extent, the contribution quantity is reduced, and the system has good imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression ImgH/f < 0.35, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface, and f is the total effective focal length of the optical imaging lens. More specifically, imgH and f may further satisfy 0.31.ltoreq.ImgH/f.ltoreq.0.32. By properly adjusting the ratio of half the diagonal length of the effective pixel area on the imaging surface to the effective focal length of the lens, the system can have a long focal length and a small visual angle, so that an image larger than a standard lens can be shot at the same distance, and the imaging quality is clearer.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be provided at an appropriate position as required, for example, 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 located on the imaging surface.
The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products. The application provides a five-piece type high-pixel long-focus ultrathin lens with long focus and miniaturization.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2C. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 1
Where f is the total effective focal length of the optical imaging lens, FOV is the maximum field angle of the optical imaging lens, and TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height 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 aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S10 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
Fig. 2A shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2B shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2C, the optical imaging lens provided in 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 4C. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for 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 sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
Face number A4 A6 A8 A10 A12 A14 A16 A18
S1 -5.1310E-03 -7.4697E-04 -1.7162E-03 7.3558E-04 -2.4947E-04 0.0000E+00 0.0000E+00 0.0000E+00
S2 -4.3465E-02 2.2725E-02 -7.1155E-03 1.3555E-03 -1.4039E-04 0.0000E+00 0.0000E+00 0.0000E+00
S3 -9.5508E-03 6.1017E-03 -2.1060E-03 2.2714E-03 -7.4534E-04 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.9441E-03 1.0660E-02 9.2426E-03 -4.3585E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 -7.4446E-02 2.5554E-02 -6.3540E-03 2.5568E-02 -3.1279E-02 1.0488E-02 0.0000E+00 0.0000E+00
S6 -5.3165E-02 -2.5215E-02 6.1702E-02 -6.3838E-02 2.0416E-02 0.0000E+00 0.0000E+00 0.0000E+00
S7 -1.5928E-03 -3.5097E-02 -7.5828E-03 -1.9686E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S8 7.8363E-02 1.0176E-02 -2.8889E-02 8.2302E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S9 -9.2343E-02 1.0535E-01 -9.0177E-02 4.7947E-02 -1.4564E-02 2.3070E-03 -1.4643E-04 0.0000E+00
S10 -1.8533E-01 1.9501E-01 -1.7155E-01 9.9800E-02 -3.7723E-02 8.9025E-03 -1.1872E-03 6.7939E-05
TABLE 4 Table 4
Fig. 4A shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4B shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4C shows a magnification chromatic aberration 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 4C, the optical imaging lens provided in 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 6C. 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 sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -9.3581E-03 -9.7372E-04 -1.8680E-02 3.9665E-02 -3.6066E-02 7.2293E-03 8.4860E-03 -4.9918E-03 7.6597E-04
S2 -3.9939E-02 -7.2524E-03 2.8634E-01 -6.5268E-01 7.1571E-01 -4.4445E-01 1.5986E-01 -3.1128E-02 2.5436E-03
S3 -3.0804E-02 8.0169E-02 -1.0662E-01 5.9630E-02 -1.7598E-02 2.9962E-03 -2.9697E-04 1.5956E-05 -3.5977E-07
S4 -1.5799E-01 1.4120E+00 -5.7924E+00 1.3583E+01 -1.9537E+01 1.7592E+01 -9.6618E+00 2.9626E+00 -3.9101E-01
S5 -2.8122E-01 1.6862E+00 -6.7088E+00 1.5465E+01 -2.1816E+01 1.9165E+01 -1.0209E+01 3.0166E+00 -3.7997E-01
S6 -4.1552E-02 -3.8986E-02 6.4560E-01 -4.2378E+00 1.2880E+01 -2.1964E+01 2.1331E+01 -1.0968E+01 2.3054E+00
S7 -2.1476E-01 -9.2926E-02 3.1407E-01 -3.7478E+00 1.2357E+01 -1.8790E+01 6.8302E+00 9.4420E+00 -6.4160E+00
S8 4.5984E-09 -1.4659E-11 1.0558E-15 -4.0291E-20 1.0315E-24 -1.7864E-29 1.9579E-34 -1.2044E-39 3.1370E-45
S9 -7.5892E-02 1.9047E-02 6.5066E-02 -5.3512E-02 2.0004E-02 -4.1434E-03 4.7429E-04 -2.7567E-05 6.2503E-07
S10 -1.7351E-01 5.0059E-02 -4.8750E-03 2.4116E-04 -6.9139E-06 1.2000E-07 -1.2458E-09 7.1296E-12 -1.7315E-14
TABLE 6
Fig. 6A shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6B shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6C, the optical imaging lens provided in 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 8C. 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 sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.5481E-02 1.3431E-02 -6.3711E-02 1.0244E-01 -1.2628E-01 1.0833E-01 -5.7975E-02 1.7178E-02 -2.1241E-03
S2 -9.2523E-01 2.4276E+00 -3.9787E+00 4.8347E+00 -4.5162E+00 3.0860E+00 -1.4119E+00 3.7999E-01 -4.5093E-02
S3 -7.6063E-01 1.6865E+00 -1.6355E+00 8.7305E-01 -2.7845E-01 5.4431E-02 -6.3933E-03 4.1422E-04 -1.1374E-05
S4 7.8343E-03 -5.3332E-01 2.4275E+00 -4.4062E+00 5.9955E+00 -6.5381E+00 4.6787E+00 -1.8384E+00 3.0093E-01
S5 -1.2146E-02 -6.5280E-01 1.8995E+00 -1.3532E+00 -1.1723E+00 2.7255E+00 -1.9377E+00 6.1686E-01 -7.3424E-02
S6 -6.4580E-02 -3.1444E-01 6.2569E-01 9.9690E-01 -5.2636E+00 8.5364E+00 -7.0891E+00 3.0547E+00 -5.4567E-01
S7 -2.1092E-01 -3.5660E-01 2.5049E+00 -1.5001E+01 5.1873E+01 -1.1136E+02 1.4517E+02 -1.0625E+02 3.3552E+01
S8 1.5367E-01 -3.9979E-01 5.8366E-01 -6.4810E-01 4.7522E-01 -2.0789E-01 5.2114E-02 -6.9224E-03 3.7825E-04
S9 -3.9143E-02 1.2465E-01 -1.2792E-01 9.4492E-02 -4.7479E-02 1.5109E-02 -2.8845E-03 2.9796E-04 -1.2693E-05
S10 -1.1213E-01 1.4067E-01 -1.3661E-01 9.1592E-02 -3.6308E-02 8.2493E-03 -1.0609E-03 7.1977E-05 -2.0036E-06
TABLE 8
Fig. 8A shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8B shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8C shows a magnification chromatic aberration 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 8C, the optical imaging lens provided in 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 10C. 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 sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -9.9090E-03 5.7526E-03 -3.2956E-02 4.8770E-02 -6.1869E-02 5.3393E-02 -2.7780E-02 7.8173E-03 -9.0323E-04
S2 -7.8403E-01 1.7218E+00 -2.2982E+00 2.2606E+00 -1.7856E+00 1.0926E+00 -4.6371E-01 1.1729E-01 -1.3111E-02
S3 -6.8959E-01 1.3925E+00 -1.2389E+00 6.0773E-01 -1.7836E-01 3.2123E-02 -3.4801E-03 2.0815E-04 -5.2803E-06
S4 -8.9685E-02 6.0414E-02 5.0404E-01 -7.4950E-01 8.2412E-01 -8.9529E-01 5.4917E-01 -1.3282E-01 4.0757E-03
S5 -1.0469E-01 -5.6063E-02 3.0980E-01 5.9929E-01 -2.1217E+00 2.4253E+00 -1.3525E+00 3.5777E-01 -3.3771E-02
S6 -9.8597E-02 -1.2523E-02 -2.3293E-01 2.1783E+00 -5.7888E+00 7.8899E+00 -6.0515E+00 2.4915E+00 -4.3200E-01
S7 -7.7613E-02 -3.5713E-01 1.2067E+00 -6.5499E+00 2.1199E+01 -4.2787E+01 5.2507E+01 -3.6394E+01 1.0951E+01
S8 2.5075E-01 -4.9633E-01 5.2594E-01 -4.3824E-01 2.7532E-01 -1.1206E-01 2.7018E-02 -3.4947E-03 1.8680E-04
S9 -2.5882E-02 9.8304E-02 -9.8143E-02 6.7713E-02 -3.1272E-02 9.1392E-03 -1.6075E-03 1.5358E-04 -6.0717E-06
S10 -9.2301E-02 1.1069E-01 -9.9386E-02 6.0721E-02 -2.1992E-02 4.5815E-03 -5.4151E-04 3.3813E-05 -8.6703E-07
Table 10
Fig. 10A shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10B shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10C, the optical imaging lens provided in 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 12C. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -2.1481E-02 1.1245E-02 -2.3625E-02 -1.7152E-02 5.4432E-02 -5.2874E-02 2.7748E-02 -7.9771E-03 1.0352E-03
S2 -1.1658E+00 3.8649E+00 -8.3434E+00 1.2975E+01 -1.4376E+01 1.0899E+01 -5.3236E+00 1.5030E+00 -1.8591E-01
S3 -8.8863E-01 2.5602E+00 -4.5858E+00 6.9759E+00 -8.5119E+00 7.3367E+00 -4.0653E+00 1.2909E+00 -1.7836E-01
S4 2.5176E-01 -1.9084E+00 4.6625E+00 -1.0621E+00 -1.3759E+01 2.9647E+01 -2.9920E+01 1.5489E+01 -3.2967E+00
S5 2.5482E-01 -2.2384E+00 4.1112E+00 4.5805E+00 -2.8422E+01 4.8752E+01 -4.2988E+01 1.9722E+01 -3.7200E+00
S6 -8.0348E-03 -6.3291E-01 5.9519E-01 5.6016E+00 -2.1703E+01 3.6807E+01 -3.3887E+01 1.6495E+01 -3.3326E+00
S7 -4.2424E-01 -1.5124E-01 2.2281E+00 -1.2729E+01 4.1717E+01 -9.2255E+01 1.3159E+02 -1.1042E+02 4.0596E+01
S8 3.0636E-02 -5.1686E-01 2.1418E+00 -5.4585E+00 9.1144E+00 -1.0196E+01 7.3331E+00 -3.0433E+00 5.5219E-01
S9 -1.7456E-02 -4.5906E-02 2.6338E-01 -3.5777E-01 2.6679E-01 -1.2179E-01 3.3704E-02 -5.1916E-03 3.4159E-04
S10 -6.5099E-02 -4.0522E-02 1.3139E-01 -9.3095E-02 2.1416E-02 9.1842E-03 -7.3712E-03 1.8031E-03 -1.5604E-04
Table 12
Fig. 12A shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12B shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12C, the optical imaging lens provided in 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 14C. Fig. 13 shows a schematic structural diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 13
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -2.0816E-02 3.1600E-02 -1.3041E-01 3.7899E-01 -7.6114E-01 9.2494E-01 -6.6318E-01 2.5884E-01 -4.2400E-02
S2 -1.2765E+00 4.2699E+00 -9.2771E+00 1.4127E+01 -1.5184E+01 1.1229E+01 -5.4674E+00 1.5973E+00 -2.1689E-01
S3 -9.2672E-01 2.6190E+00 -4.2803E+00 5.2849E+00 -4.7772E+00 2.9159E+00 -1.1516E+00 2.9462E-01 -4.2194E-02
S4 3.3413E-01 -2.4037E+00 5.2278E+00 3.2066E+00 -3.5861E+01 8.0585E+01 -9.3239E+01 5.5748E+01 -1.3445E+01
S5 3.3272E-01 -2.8280E+00 5.7850E+00 1.2022E+00 -2.0210E+01 3.1220E+01 -1.9026E+01 1.1541E+00 2.5498E+00
S6 1.4959E-02 -9.6860E-01 2.0571E+00 5.8061E-01 -5.1840E+00 -2.4232E+00 2.2450E+01 -2.7379E+01 1.1005E+01
S7 -6.6145E-01 7.9605E-02 -2.0901E+00 1.0996E+01 -1.4874E+01 -8.7501E+01 3.8693E+02 -5.9035E+02 3.1726E+02
S8 9.5317E-02 -1.4982E+00 4.5966E+00 -7.4878E+00 5.0413E+00 3.8691E+00 -1.0194E+01 7.3348E+00 -1.8645E+00
S9 -8.2864E-03 6.9678E-03 1.3163E-01 -3.7720E-01 4.4227E-01 -2.6645E-01 8.7290E-02 -1.4730E-02 9.9071E-04
S10 -1.5221E-01 4.6619E-02 3.8770E-01 -8.2623E-01 7.6980E-01 -3.9561E-01 1.1786E-01 -1.9237E-02 1.3332E-03
TABLE 14
Fig. 14A shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14B shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. Fig. 14C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14C, the optical imaging lens provided in 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 16C. 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 sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 15 shows a basic parameter table of the optical imaging lens of example 8, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 16 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 15
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -2.5127E-02 4.0656E-02 -1.5179E-01 3.7580E-01 -6.8834E-01 7.8611E-01 -5.3757E-01 2.0195E-01 -3.2049E-02
S2 -1.1127E+00 3.9847E+00 -8.5530E+00 1.2585E+01 -1.2687E+01 8.4410E+00 -3.4554E+00 7.5760E-01 -6.1993E-02
S3 -9.5092E-01 2.7399E+00 -4.5352E+00 5.5483E+00 -4.9329E+00 2.9859E+00 -1.1794E+00 3.0258E-01 -4.3461E-02
S4 3.6053E-01 -2.6676E+00 6.0539E+00 3.6540E+00 -4.4826E+01 1.0487E+02 -1.2612E+02 7.9571E+01 -2.0776E+01
S5 3.7673E-01 -3.3001E+00 6.1740E+00 1.0637E+01 -6.7117E+01 1.3789E+02 -1.5293E+02 9.1597E+01 -2.3343E+01
S6 -1.8009E-02 -9.0405E-01 6.6690E-01 1.3111E+01 -5.6834E+01 1.1553E+02 -1.3260E+02 8.3014E+01 -2.2200E+01
S7 -6.5488E-01 -4.2810E-01 3.5400E+00 -1.8085E+01 5.7782E+01 -1.3481E+02 2.2712E+02 -2.4247E+02 1.1350E+02
S8 7.7678E-02 -1.7836E+00 7.0077E+00 -1.8087E+01 3.1902E+01 -3.7261E+01 2.7287E+01 -1.1310E+01 2.0237E+00
S9 -4.3540E-03 1.8321E-01 -4.9087E-01 7.2212E-01 -6.4786E-01 3.6462E-01 -1.2555E-01 2.4157E-02 -1.9901E-03
S10 -6.4023E-02 7.7471E-02 -2.8036E-02 -1.0977E-01 1.8235E-01 -1.2725E-01 4.6923E-02 -8.9480E-03 6.9281E-04
Table 16
Fig. 16A shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16B shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different angles of view. Fig. 16C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16C, the optical imaging lens provided in 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 18C. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the imaging surface S11.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging surface S11.
In the present embodiment, the optical imaging lens may further include a stop STO disposed between the object side and the first lens E1.
Table 17 shows a basic parameter table of the optical imaging lens of embodiment 9, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 18 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 17
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -2.4097E-02 3.4506E-02 -1.2576E-01 2.6639E-01 -4.2705E-01 4.1945E-01 -2.3856E-01 7.0648E-02 -8.0377E-03
S2 -1.1247E+00 4.0404E+00 -8.7187E+00 1.2934E+01 -1.3208E+01 8.9713E+00 -3.8053E+00 8.9196E-01 -8.4722E-02
S3 -9.8717E-01 3.0179E+00 -5.4460E+00 7.2374E+00 -6.8992E+00 4.4985E+00 -1.9763E+00 5.9030E-01 -9.9942E-02
S4 3.6805E-01 -2.8019E+00 6.5683E+00 3.2370E+00 -4.7090E+01 1.1308E+02 -1.3836E+02 8.8630E+01 -2.3516E+01
S5 4.0004E-01 -3.6833E+00 7.4969E+00 9.8257E+00 -7.2846E+01 1.5542E+02 -1.7543E+02 1.0555E+02 -2.6698E+01
S6 -4.7662E-02 -7.1822E-01 1.5407E-01 1.4286E+01 -6.0123E+01 1.2293E+02 -1.4236E+02 8.9662E+01 -2.3962E+01
S7 -6.3528E-01 -3.2667E-01 2.0726E+00 -4.9712E+00 -1.1811E+01 9.3053E+01 -2.1988E+02 2.3756E+02 -1.0180E+02
S8 2.3064E-02 -1.3101E+00 5.0886E+00 -1.2924E+01 2.2619E+01 -2.6372E+01 1.9315E+01 -8.0003E+00 1.4259E+00
S9 2.4927E-03 1.3436E-01 -3.6260E-01 5.4138E-01 -4.8675E-01 2.7261E-01 -9.3201E-02 1.7800E-02 -1.4558E-03
S10 -6.4923E-02 7.3437E-02 -5.9577E-02 -2.3617E-02 9.0862E-02 -7.3914E-02 2.8916E-02 -5.6597E-03 4.4278E-04
TABLE 18
Fig. 18A shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18B shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different angles of view. Fig. 18C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18C, the optical imaging lens provided in embodiment 9 can achieve good imaging quality.
In summary, examples 1 to 9 each satisfy the relationship shown in table 19.
Equation \embodiment 1 2 3 4 5 6 7 8 9
TTL/f 0.85 0.82 0.85 0.84 0.84 0.83 0.81 0.86 0.86
f/R3+f/R5 6.76 6.13 4.82 4.24 4.18 4.73 5.08 4.04 3.80
f/f1 1.89 1.80 1.61 1.47 1.45 1.44 1.39 1.48 1.46
f/f4 -1.66 -1.37 -0.92 -1.61 -1.57 -1.70 -1.64 -1.64 -1.63
(T34+T45)/TTL 0.37 0.38 0.47 0.38 0.37 0.41 0.48 0.43 0.44
f1/|f23| 0.31 0.21 0.24 0.02 0.05 0.05 0.05 0.06 0.05
f123/|f5| 0.21 0.41 0.32 0.06 0.08 0.03 0.05 0.24 0.21
DT42/DT52 0.60 0.55 0.61 0.58 0.57 0.58 0.63 0.60 0.60
(CT4+SAG42)/T45 0.25 0.29 0.25 0.36 0.35 0.31 0.31 0.31 0.34
f/(R4+R6+R8) 0.87 0.83 0.44 0.72 0.70 0.78 0.91 0.79 0.75
V3-V5 30.6 30.6 30.6 30.6 30.6 30.6 30.6 30.6 30.6
ImgH/f 0.32 0.31 0.31 0.31 0.31 0.31 0.31 0.31 0.31
TABLE 19
The present application also provides an imaging device, the electron-sensitive element of which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (9)

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:
the first lens with positive focal power has a convex object side surface and a concave image side surface;
the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;
the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
a fourth lens having negative optical power, the image-side surface of which is concave;
a fifth lens having an optical power of,
the total effective focal length f of the optical imaging lens, the curvature radius R3 of the object side surface of the second lens and the curvature radius R5 of the object side surface of the third lens meet the conditions that 3.5 < f/R3+f/R5 < 7.0;
the total effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens meet-2.0 < f/f4 less than or equal to-0.9;
the effective focal length f1 of the first lens and the combined focal length f23 of the second lens and the third lens meet the condition that f1/|f23| < 0.35;
the distance T34 between the third lens and the fourth lens on the optical axis, the distance T45 between the fourth lens and the fifth 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 0.35 < (T34+T45)/TTL < 0.5;
the number of lenses having optical power in the optical imaging lens is five.
2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy 1.3 < f/f1 < 2.0.
3. The optical imaging lens as claimed in claim 1, wherein a combined focal length f123 of the first lens, the second lens and the third lens and an effective focal length f5 of the fifth lens satisfy 0.03+.f 123/|f5| < 0.5.
4. The optical imaging lens as claimed in claim 1, wherein a distance TTL from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens satisfy TTL/f being 0.81-0.9.
5. The optical imaging lens as claimed in claim 1, wherein a maximum effective radius DT42 of an image side surface of the fourth lens and a maximum effective radius DT52 of an image side surface of the fifth lens satisfy 0.5 < DT42/DT52 < 0.7.
6. The optical imaging lens as claimed in claim 1, wherein a center thickness CT4 of the fourth lens, a sagittal height SAG42 of an image side surface of the fourth lens, and a separation distance T45 of the fourth lens and the fifth lens on the optical axis satisfy 0.2 < (CT 4+ SAG 42)/T45 < 0.5.
7. The optical imaging lens as claimed in claim 1, wherein the third lens has an abbe number V3 and the fifth lens has an abbe number V5 satisfying 25 < V3-V5 < 35.
8. The optical imaging lens according to claim 1, wherein a total effective focal length f of the optical imaging lens, a radius of curvature R4 of an image side surface of the second lens, a radius of curvature R6 of an image side surface of the third lens, and a radius of curvature R8 of an image side surface of the fourth lens satisfy 0.4+.f/(r4+r6+r8) < 1.0.
9. The optical imaging lens according to any one of claims 1 to 8, wherein a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens, imgH, and a total effective focal length f of the optical imaging lens satisfy 0.31-0.35 ImgH/f.
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