CN217034396U - Camera lens - Google Patents

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CN217034396U
CN217034396U CN202220917096.8U CN202220917096U CN217034396U CN 217034396 U CN217034396 U CN 217034396U CN 202220917096 U CN202220917096 U CN 202220917096U CN 217034396 U CN217034396 U CN 217034396U
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lens
imaging
image
optical axis
satisfy
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张龙
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 camera lens includes following order from object side to image side along the optical axis: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens have focal power, the third lens has negative focal power, 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; the fourth lens has positive focal power; the fifth lens has positive focal power; the object side surface of the sixth lens is a concave surface. The distance TTL from the object side surface of the first lens to the imaging surface of the camera lens along the optical axis, the Semi-FOV which is half of the maximum field angle of the camera lens and the effective focal length f of the camera lens meet the following conditions: TTL/(tan (Semi-FOV) × f) < 1.6. The half ImgH of the diagonal length of the effective pixel area on the imaging plane satisfies: 4.75mm < ImgH <7 mm.

Description

Camera lens
Technical Field
The present application relates to the field of optical elements, and more particularly, to an imaging lens.
Background
In recent years, a mobile phone has become an essential part of people's life as a tool integrating communication, working and entertainment, wherein the photographing function of the mobile phone has become an important factor to be considered when people choose the mobile phone. With the increasing demand of mobile phone lenses, the requirements of people on the imaging quality of the lenses are higher and higher. In order to meet the market demand, the lens needs to be as thin and small as possible, and the design difficulty increases. Meanwhile, as the performance of the image sensor is improved and the size of the image sensor is reduced, the design freedom of the corresponding lens is smaller and smaller, and the design difficulty is increased day by day. Therefore, it is one of the directions of continuous efforts of those skilled in the art to provide a lens with features of ultra-thin, miniaturization, and high imaging quality to meet the high requirements of portable electronic products on the continuous development of the lens.
SUMMERY OF THE UTILITY MODEL
The present application provides a camera lens, sequentially comprising, from an object side to an image side along an optical axis: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens have focal power, the third lens has negative focal power, 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; the fourth lens has positive optical power; the fifth lens has positive focal power; the object side surface of the sixth lens is a concave surface. The distance TTL from the object side surface of the first lens to the imaging surface of the camera lens along the optical axis, the Semi-FOV of the maximum field angle of the camera lens and the effective focal length f of the camera lens can meet the following requirements: TTL/(tan (Semi-FOV) × f) < 1.6. The ImgH of half the diagonal length of the effective pixel area on the imaging plane may satisfy: 4.75mm < ImgH <7 mm.
In one embodiment, the effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens may satisfy: f/EPD <2.
In one embodiment, a Semi-FOV of a maximum field angle of the imaging lens and a distance TTL from an object side surface of the first lens to an imaging surface of the imaging lens along the optical axis may satisfy: 5.7mm < tan (Semi-FOV). times.TTL <8 mm.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens may satisfy: 0< f2/f3< 1.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f1 of the first lens may satisfy: 0.5< f5/f1< 2.
In one embodiment, the edge thickness ET5 of the fifth lens and the center thickness CT5 of the fifth lens on the optical axis may satisfy: ET5/CT5 is more than or equal to 1.5.
In one embodiment, the first to fourth lenses constitute a first lens group, the fifth lens and the sixth lens constitute a second lens group, and an effective focal length fa of the first lens group and an effective focal length fb of the second lens group may satisfy: -1< fa/fb <0.
In one embodiment, a center thickness CT1 of the first lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis may satisfy: 0.5< CT1/CT5< 1.8.
In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R5 of the object-side surface of the third lens may satisfy: 0< R6/R5< 1.
In one embodiment, a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis may satisfy: 0< CT3/CT4 is less than or equal to 0.59.
In one embodiment, a combined focal length f12 of the first and second lenses and an effective focal length f of the imaging lens may satisfy: 0.7< f12/f < 1.8.
In one embodiment, an on-axis distance SAG22 from an intersection of an image-side surface of the second lens and the optical axis to an effective radius vertex of the image-side surface of the second lens and an on-axis distance SAG31 from an intersection of an object-side surface of the third lens and the optical axis to an effective radius vertex of an object-side surface of the third lens may satisfy a distance T23 between the second lens and the third lens on the optical axis: 1< T23/(SAG22-SAG31) < 2.2.
In one embodiment, an on-axis distance SAG62 from an intersection of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens to a distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: -2< T56/SAG62 <0.
In one embodiment, a maximum effective radius DT62 of an image-side surface of the sixth lens and a maximum effective radius DT42 of an image-side surface of the fourth lens may satisfy: 1.5< DT62/DT42< 2.6.
In one embodiment, the edge thicknesses ET1, ET2 of the first lens, ET3 of the third lens, and ET4 of the fourth lens may satisfy: 0.6< (ET1+ ET2)/(ET3+ ET4) <2.
In one embodiment, the first lens has a positive optical power, with a convex object-side surface and a concave image-side surface; the second lens has negative focal power, and the object side surface of the second lens is a convex surface while the image side surface of the second lens is a concave surface.
In one embodiment, the image side surface of the fifth lens is convex; the sixth lens has a negative power.
The camera lens has the beneficial effects of being ultrathin, large in aperture, good in imaging quality and the like, and can better meet the requirements of portable electronic products.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 1, respectively;
fig. 3 is a schematic view showing a configuration of an imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 2, respectively;
fig. 5 shows a schematic configuration diagram of an imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 3;
fig. 7 is a schematic configuration diagram showing an 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 magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 4;
fig. 9 is a schematic configuration diagram showing an 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 magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 5;
fig. 11 is a schematic configuration diagram showing an imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 6, respectively;
fig. 13 is a schematic view showing a configuration of an 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 magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 7;
fig. 15 is a schematic configuration diagram showing an 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 magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 8;
fig. 17 is a schematic view showing a configuration of an imaging lens according to embodiment 9 of the present application; and
fig. 18A to 18D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of example 9, respectively.
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. Herein, a surface of each lens closest to a subject is referred to as an object-side surface of the lens, and a surface of each lens closest to an image plane is referred to as an 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 following provides a detailed description of the features, principles, and other aspects of the present application.
An image pickup lens according to an exemplary embodiment of the present application may include, for example, six lenses, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in order from the object side to the image side along the optical axis.
In an exemplary embodiment, the first lens may have a positive or negative optical power; the second lens may have a positive or negative optical power; the third lens may have a negative optical power; the fourth lens may have a positive optical power; the fifth lens may have positive optical power; the sixth lens may have a positive power or a negative power.
In an exemplary embodiment, the object-side surface of the third lens element may be convex and the image-side surface may be concave.
In an exemplary embodiment, the object side surface of the sixth lens may be a concave surface.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression TTL/(tan (Semi-FOV) × f) <1.6, where TTL is a distance along the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens, Semi-FOV is half of the maximum field angle of the imaging lens, and f is the effective focal length of the imaging lens. By controlling the distance along the optical axis from the object side surface of the first lens to the imaging surface of the camera lens, and controlling the half of the maximum field angle of the camera lens and the effective focal length of the camera lens to satisfy TTL/(tan (Semi-FOV) × f) <1.6, the optical imaging system can be thinned and high pixels can be realized at the same time. More specifically, TTL, Semi-FOV, and f can satisfy: TTL/(tan (Semi-FOV) × f) < 1.5. Illustratively, TTL can satisfy 7.1mm < TTL <7.6mm, Semi-FOV can satisfy 40 ° < Semi-FOV <44 °, and f can satisfy 5.8mm < f < 6.3 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 4.75mm < ImgH <7mm, where ImgH is half the diagonal length of an effective pixel area on an imaging plane of the imaging lens. More specifically, ImgH may satisfy 5.4mm < ImgH < 5.8 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression f/EPD <2, where f is an effective focal length of the imaging lens and EPD is an entrance pupil diameter of the imaging lens. By controlling the ratio of the effective focal length of the camera lens to the entrance pupil diameter of the camera lens within the range, the number F of the imaging system with a large image plane is smaller, the system can be ensured to have a large aperture, and the imaging quality is good in a dark environment. More specifically, f and EPD may satisfy: f/EPD < 1.9. Illustratively, f may satisfy 5.8mm < f < 6.3 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 5.7mm < tan (Semi-FOV) × TTL <8mm, where Semi-FOV is a half of the maximum angle of view of the imaging lens and TTL is a distance along the optical axis from the object-side surface of the first lens to the imaging plane of the imaging lens. The product of the tangent value of half of the maximum field angle of the imaging lens and the distance from the object side surface of the first lens to the imaging surface of the imaging lens along the optical axis is controlled within the range, which is beneficial to system miniaturization. More specifically, the Semi-FOV and TTL may satisfy: 6.0mm < tan (Semi-FOV). times.TTL <7.4 mm. Illustratively, the Semi-FOV may satisfy 40 ° < Semi-FOV <44 °, and the TTL may satisfy 7.1mm < TTL <7.6 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0< f2/f3<1, where f2 is an effective focal length of the second lens and f3 is an effective focal length of the third lens. The ratio of the effective focal length of the second lens to the effective focal length of the third lens is controlled within the range, so that the light deflection is avoided from being too large, and the capability of the camera lens for correcting field curvature is improved. More specifically, f2 and f3 may satisfy: 0.2< f2/f3< 0.7. Illustratively, f2 may satisfy-16.9 mm < f2< -14.5mm, and f3 may satisfy-56.2 mm < f3< -38.3 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.5< f5/f1<2, where f5 is an effective focal length of the fifth lens and f1 is an effective focal length of the first lens. By controlling the ratio of the effective focal length of the fifth lens to the effective focal length of the first lens within the range, the chromatic aberration is improved, the light focusing position can be adjusted, and the light converging capability of the lens is improved. More specifically, f5 and f1 may satisfy: 0.8< f5/f1< 1.8. Illustratively, f5 may satisfy 6.0mm < f5<8.4mm, and f1 may satisfy 5.5mm < f1<5.7 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression ET5/CT5 ≧ 1.5, where ET5 is the edge thickness of the fifth lens, and CT5 is the center thickness of the fifth lens on the optical axis. The processing difficulty of the lens can be reduced by controlling the ratio of the edge thickness of the fifth lens to the center thickness of the fifth lens on the optical axis within the range.
In an exemplary embodiment, an imaging lens of the present application may satisfy the conditional expression-1 < fa/fb <0, where fa is an effective focal length of a first lens group included in the imaging lens, the first lens group including a first lens, a second lens, a third lens, and a fourth lens in the imaging lens; fb is an effective focal length of a second lens group included in the imaging lens, the second lens group including a fifth lens and a sixth lens in the imaging lens. By controlling the ratio of the effective focal length of the first lens group to the effective focal length of the second lens group in the camera lens to be in the range, the optical sensitivity of the first lens group and the second lens group can be effectively reduced, and the mass production can be realized more favorably. More specifically, fa and fb may satisfy: -0.7< fa/fb < -0.1.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.5< CT1/CT5<1.8, where CT1 is a central thickness of the first lens on the optical axis, and CT5 is a central thickness of the fifth lens on the optical axis. By controlling the ratio of the center thickness of the first lens on the optical axis to the center thickness of the fifth lens on the optical axis within this range, assembly is facilitated. More specifically, CT1 and CT5 may satisfy 0.8< CT1/CT5< 1.6.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0< R6/R5<1, where R6 is a radius of curvature of an image-side surface of the third lens, and R5 is a radius of curvature of an object-side surface of the third lens. By controlling the ratio of the curvature radius of the image side surface of the third lens to the curvature radius of the object side surface of the third lens within the range, the included angle between the principal ray incident on the image surface and the optical axis can be reduced, and the illumination of the image surface is improved. More specifically, R6 and R5 may satisfy 0.2< R6/R5< 0.8.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0< CT3/CT4 ≦ 0.59, where CT3 is the central thickness of the third lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis. The ratio of the central thickness of the third lens on the optical axis to the central thickness of the fourth lens on the optical axis is controlled to be in the range, so that the processing is facilitated, and the performance is improved. More specifically, CT3 and CT4 may satisfy 0.25< CT3/CT4 ≦ 0.59.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.7< f12/f <1.8, where f12 is a combined focal length of the first lens and the second lens, and f is an effective focal length of the imaging lens. By controlling the ratio of the combined focal length of the first lens and the second lens to the effective focal length of the camera lens within the range, the first lens and the second lens can be combined to be used as a lens group with reasonable positive focal power to balance the aberration generated by the lens group with negative focal power at the rear end, so that good imaging quality is obtained, and the effect of high resolving power is realized. More specifically, f12 and f may satisfy 1.0< f12/f < 1.6. Illustratively, f may satisfy 5.8mm < f < 6.3 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy conditional expression 1< T23/(SAG22-SAG31) <2.2, where T23 is a distance of spacing of the second lens and the third lens on the optical axis, SAG22 is an on-axis distance of an intersection of the image-side surface of the second lens and the optical axis to an effective radius vertex of the image-side surface of the second lens, and SAG31 is an on-axis distance of an intersection of the object-side surface of the third lens and the optical axis to an effective radius vertex of the object-side surface of the third lens. The distance between the second lens and the third lens on the optical axis and the distance between the intersection point of the image side surface of the second lens and the optical axis and the effective radius peak of the image side surface of the second lens on the axis and the distance between the intersection point of the object side surface of the third lens and the optical axis and the distance between the intersection point of the object side surface of the third lens and the effective radius peak of the object side surface of the third lens on the axis meet 1< T23/(SAG22-SAG31) <2.2, so that the lens is thinner, the structural difficulty is reduced by controlling the ratio of the rise to the gap, and the cost is reduced. More specifically, T23, SAG22, and SAG31 may satisfy 1.2< T23/(SAG22-SAG31) < 2.0.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression-2 < T56/SAG62<0, where T56 is a separation distance of the fifth lens and the sixth lens on the optical axis, and SAG62 is an on-axis distance from an intersection of the image side surface of the sixth lens and the optical axis to an effective radius vertex of the image side surface of the sixth lens. By controlling the ratio of the distance between the fifth lens and the sixth lens on the optical axis to the distance between the intersection point of the image side surface of the sixth lens and the optical axis and the axial distance from the effective radius peak of the image side surface of the sixth lens to the fifth lens within the range, the sixth lens can be prevented from being too bent, the processing difficulty is reduced, and meanwhile, the camera lens has better capability of balancing chromatic aberration and distortion. More specifically, T56 and SAG62 may satisfy-1.7 < T56/SAG62< -0.4.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 1.5< DT62/DT42<2.6, where DT62 is the maximum effective radius of the image side surface of the sixth lens and DT42 is the maximum effective radius of the image side surface of the fourth lens. The ratio of the maximum effective radius of the image side surface of the sixth lens to the maximum effective radius of the image side surface of the fourth lens is controlled within the range, so that the size of the lens can be reduced, the miniaturization of the lens is met, and the resolution is improved. More specifically, DT62 and DT42 may satisfy 1.7< DT62/DT42< 2.4.
In an exemplary embodiment, the image pickup lens of the present application may satisfy the conditional expression 0.6< (ET1+ ET2)/(ET3+ ET4) <2, where ET1 is an edge thickness of the first lens, ET2 is an edge thickness of the second lens, ET3 is an edge thickness of the third lens, and ET4 is an edge thickness of the fourth lens. The edge thicknesses of the front four lenses are reasonably distributed in the range by controlling the ratio of the sum of the edge thickness of the first lens and the edge thickness of the second lens to the sum of the edge thickness of the third lens and the edge thickness of the fourth lens, so that the size of the rear end of the camera lens can be effectively reduced, the miniaturization of the camera lens is ensured, and the camera lens is facilitated to be assembled. More specifically, ET1, ET2, ET3, and ET4 may satisfy 0.8< (ET1+ ET2)/(ET3+ ET4) < 1.8.
In an exemplary embodiment, an image pickup lens of the present application may include a first lens group including a first lens, a second lens, a third lens, and a fourth lens. The first lens can have positive focal power, and the object-side surface of the first lens can be a convex surface, and the image-side surface of the first lens can be a concave surface; the second lens element can have a negative power, and can have a convex object-side surface and a concave image-side surface. And the characteristics of focal power, surface type and the like of each lens are reasonably distributed, so that the performance of the camera lens is improved.
In an exemplary embodiment, an image pickup lens of the present application may include a second lens group including a fifth lens and a sixth lens. The image side surface of the fifth lens can be a convex surface; the sixth lens may have a negative optical power. The characteristics of focal power, surface type and the like of the lens are reasonably distributed, so that the performance of the camera lens is improved, and the matching performance of the CRA is better.
In an exemplary embodiment, an imaging lens of the present application may include at least one diaphragm. The diaphragm can restrict the light path and control the intensity of light. The stop may be provided at an appropriate position of the imaging lens, for example, the stop may be located between the object side and the first lens.
In an exemplary embodiment, the above-described imaging lens may optionally further include an optical filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging surface.
In an exemplary embodiment, the effective focal length f of the camera lens may be, for example, in the range of 5.8mm to 6.3mm, the effective focal length f1 of the first lens may be, for example, in the range of 5.5mm to 5.7mm, the effective focal length f2 of the second lens may be, for example, in the range of-16.9 mm to-14.5 mm, the effective focal length f3 of the third lens may be, for example, in the range of-56.2 mm to-38.3 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 35.0mm to 122.1mm, the effective focal length f5 of the fifth lens may be, for example, in the range of 6.0mm to 8.4mm, and the effective focal length f6 of the sixth lens may be, for example, in the range of-4.5 mm to-4.1 mm.
The image pickup 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, the surface type, the central thickness of each lens, the axial distance between each lens and the like, the pick-up lens with the characteristics of ultra-thin property, large aperture, good imaging quality and the like can be provided, and the high requirement of portable electronic products can be better met.
In the embodiments of the present application, the mirror surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens may have at least one aspherical mirror surface, that is, at least one aspherical mirror surface may be included from the object side surface of the first lens to the image side surface of the sixth lens. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has advantages of improving distortion aberration and improving astigmatism aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspheric mirror surface. Optionally, each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens 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 imaging lens may be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the imaging lens is not limited to including six lenses. The camera lens may also include other numbers of lenses, if desired.
Specific examples of an imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An 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 configuration diagram of an imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the imaging lens, in order from an object side to an image side along an optical axis, comprises: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
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 convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 1 shows basic parameters of the imaging lens of embodiment 1, in which the unit of the radius of curvature and the thickness/distance are millimeters (mm).
Figure BDA0003604822200000071
TABLE 1
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:
Figure BDA0003604822200000072
wherein x is the distance rise from the vertex of the aspheric surface 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, and c is 1/R (i.e., paraxial curvature c is the reciprocal 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. The high-order term coefficients A usable for the aspherical mirror surfaces S1 to S12 in example 1 are shown in Table 2-1 and Table 2-2 below4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.5168E-02 6.9709E-03 -4.5003E-03 -3.3720E-03 -1.2619E-03 -4.2097E-04 -9.3329E-05
S2 -3.2528E-02 -1.3964E-05 -1.1090E-03 1.0759E-05 -6.8534E-05 -8.3343E-05 -3.9636E-05
S3 2.1701E-02 2.1307E-02 1.3083E-03 1.1683E-03 6.4558E-05 -7.5527E-05 -1.9497E-05
S4 7.1953E-02 9.2604E-03 5.4140E-04 5.0764E-04 1.0992E-04 2.8320E-05 2.2983E-06
S5 -1.7670E-01 -8.1862E-03 -1.5083E-03 6.2221E-04 -3.9137E-06 8.3828E-05 -2.0516E-05
S6 -2.9024E-01 1.9030E-02 4.9453E-03 3.6614E-03 1.4269E-04 3.0573E-04 1.1450E-05
S7 -3.7973E-01 1.2133E-01 -3.1423E-02 -6.7445E-03 1.2096E-03 2.5139E-03 -7.6700E-04
S8 -7.0635E-01 2.4218E-01 -4.3071E-02 -2.3349E-02 -1.5627E-04 6.1598E-03 4.5405E-05
S9 -1.8481E+00 2.8706E-01 1.1945E-01 -4.4630E-02 -3.1902E-02 9.9448E-03 8.6081E-03
S10 -2.4864E-01 8.4002E-02 4.0404E-02 -2.2828E-02 1.3891E-05 1.0307E-02 -2.4553E-03
S11 -1.5583E+00 1.1018E+00 -5.7263E-01 2.4729E-01 -9.7467E-02 3.8237E-02 -1.7050E-02
S12 -5.2841E+00 1.2700E+00 -3.9045E-01 2.2189E-01 -1.2197E-01 3.9133E-02 -2.7154E-02
TABLE 2-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -4.2961E-05 -1.3564E-05 -1.4493E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 -1.4858E-05 -6.3006E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -1.3484E-05 -3.0663E-06 -1.9783E-06 4.7124E-07 -6.3188E-07 0.0000E+00 0.0000E+00
S4 5.7276E-06 -1.6210E-06 5.1041E-07 -1.9947E-06 -1.2401E-06 0.0000E+00 0.0000E+00
S5 5.7041E-06 -8.2911E-06 -8.6876E-07 -4.3534E-06 -2.2869E-07 8.0110E-07 0.0000E+00
S6 3.0421E-05 -1.7413E-05 -1.3227E-05 -9.9116E-06 -7.4061E-06 0.0000E+00 0.0000E+00
S7 -2.7441E-04 5.9070E-05 9.6164E-06 -6.9773E-05 -4.5347E-06 0.0000E+00 0.0000E+00
S8 -1.2594E-03 -3.5188E-04 2.1767E-04 8.2544E-05 0.0000E+00 0.0000E+00 0.0000E+00
S9 -9.6717E-04 -2.6821E-03 -5.6104E-04 7.2481E-04 5.1683E-04 7.3442E-05 -9.9078E-05
S10 -1.7613E-03 3.5248E-04 2.2609E-04 -7.0140E-06 -2.3996E-05 -3.3020E-05 -9.3620E-05
S11 9.4129E-03 -5.3931E-03 2.7979E-03 -1.2349E-03 3.5007E-04 -3.4516E-05 -7.4023E-06
S12 1.7853E-02 -4.8155E-03 3.9301E-03 -2.6164E-03 5.2739E-04 -8.1641E-04 5.9393E-04
Tables 2 to 2
Fig. 2A shows on-axis chromatic aberration curves of the imaging lens of embodiment 1, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the 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 imaging lens of embodiment 1, which represents a deviation of different image heights on an imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An 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, a description of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the imaging lens, in order from an object side to an image side along an optical axis, comprises: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
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 convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 3 shows basic parameters of the imaging lens of embodiment 2, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 4-1 and 4-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 through S12 in example 24、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000091
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 1.1529E-02 -5.6698E-04 -1.1487E-03 -4.4748E-04 -1.3322E-04 -2.7798E-05 -7.0711E-06
S2 -2.3686E-02 3.5912E-03 -8.5532E-04 2.3086E-04 4.7906E-05 -2.6506E-05 -1.1475E-05
S3 7.1685E-03 1.3957E-02 -3.7409E-04 8.2441E-04 6.6177E-05 -2.8728E-06 -1.0391E-06
S4 7.3744E-02 8.6716E-03 3.7705E-04 6.2458E-04 1.3388E-04 3.7832E-05 1.2045E-05
S5 -1.7569E-01 -9.5958E-03 -1.6678E-03 5.6862E-04 1.0154E-04 1.4057E-04 1.3577E-05
S6 -2.6789E-01 1.1862E-02 3.5996E-03 2.6760E-03 1.0721E-04 1.9097E-04 2.6123E-05
S7 -3.1801E-01 9.4712E-02 -6.3183E-03 -5.5134E-03 -1.8001E-03 1.4354E-03 1.7740E-04
S8 -6.5915E-01 1.4954E-01 -4.3339E-03 -1.2480E-02 -7.3958E-03 4.0207E-04 8.7233E-04
S9 -1.3536E+00 2.6087E-02 6.6651E-02 1.9337E-02 -4.5956E-03 -3.2630E-03 5.3177E-04
S10 -2.1105E-01 2.4794E-02 4.7667E-02 -1.4929E-02 -4.2017E-03 4.0291E-03 2.5658E-03
S11 -1.5553E+00 1.1346E+00 -5.7367E-01 2.4484E-01 -9.5072E-02 3.4162E-02 -1.5394E-02
S12 -5.2071E+00 1.3642E+00 -4.0784E-01 2.2218E-01 -1.2560E-01 4.0744E-02 -2.9530E-02
TABLE 4-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -7.3625E-07 2.9685E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 -1.1793E-05 -1.0231E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -9.0191E-07 -7.2335E-07 -1.1413E-06 -6.7495E-07 2.3744E-06 0.0000E+00 0.0000E+00
S4 -1.8950E-06 -2.5184E-06 1.8491E-06 3.4115E-06 2.7628E-06 0.0000E+00 0.0000E+00
S5 2.5912E-05 2.4770E-07 9.1039E-06 -3.6673E-07 2.3097E-06 -2.5092E-06 0.0000E+00
S6 3.3004E-05 1.7084E-06 -7.1166E-07 -2.7759E-06 -3.3534E-07 0.0000E+00 0.0000E+00
S7 -3.1241E-04 -1.0342E-04 2.0857E-05 7.1554E-06 -1.6459E-05 0.0000E+00 0.0000E+00
S8 -2.1878E-04 -5.7839E-04 -2.9767E-04 -6.2029E-05 0.0000E+00 0.0000E+00 0.0000E+00
S9 5.3946E-04 -2.7886E-04 -3.8291E-04 -9.7319E-05 6.3995E-05 8.1984E-05 3.8710E-05
S10 -6.9889E-04 -3.3094E-04 1.1278E-04 7.8828E-05 -1.0104E-04 -1.8856E-05 -8.2421E-06
S11 9.3020E-03 -5.9326E-03 2.5483E-03 -4.3244E-04 -1.9710E-04 2.9848E-05 4.5434E-05
S12 1.6856E-02 -4.9111E-03 3.4139E-03 -2.8170E-03 3.2163E-04 -6.1468E-04 5.7476E-04
TABLE 4-2
Fig. 4A shows on-axis chromatic aberration curves of the imaging lens of embodiment 2, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 4B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the 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 imaging lens of embodiment 2, which represents a 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 imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An 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 configuration diagram of an imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the imaging lens, in order from an object side to an image side along an optical axis, comprises: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
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 convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 5 shows basic parameters of the imaging lens of embodiment 3, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 6-1 and 6-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S12 in example 34、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000101
Figure BDA0003604822200000111
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 9.8637E-03 3.6395E-04 -1.4516E-03 -2.5679E-04 -2.0105E-04 5.2284E-05 -3.3502E-05
S2 -2.0404E-02 3.6567E-03 -1.8459E-04 9.2536E-05 5.6594E-05 -2.3623E-04 -9.2960E-05
S3 6.8299E-03 1.4311E-02 -3.6484E-04 1.0394E-03 1.5245E-05 6.6023E-05 -3.4698E-05
S4 7.8655E-02 8.4592E-03 5.3966E-04 6.1880E-04 1.8647E-04 3.0588E-05 3.1983E-05
S5 -1.9521E-01 -1.0191E-02 -1.7486E-03 6.0058E-04 7.6011E-05 1.6972E-04 -1.8908E-06
S6 -2.8268E-01 1.2726E-02 4.9470E-03 2.8193E-03 1.5303E-04 1.9504E-04 2.0067E-05
S7 -3.2495E-01 8.6938E-02 -1.9717E-03 -4.9477E-03 -2.6064E-03 1.1973E-03 2.8388E-04
S8 -6.1239E-01 1.2350E-01 7.6375E-03 -2.9848E-03 -5.3312E-03 -5.6987E-04 6.2263E-04
S9 -1.2970E+00 -2.0068E-02 4.2343E-02 1.7759E-02 1.4237E-03 -2.0801E-03 -7.4328E-04
S10 -3.0010E-01 2.2466E-02 5.0957E-02 -2.0051E-02 -1.7079E-03 1.5067E-03 1.7903E-03
S11 -1.4367E+00 1.1680E+00 -6.0284E-01 2.5333E-01 -9.5665E-02 2.9039E-02 -1.1041E-02
S12 -4.6988E+00 1.1447E+00 -1.8592E-01 -5.2930E-03 -6.5464E-02 7.8544E-02 3.5796E-03
TABLE 6-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.5397E-05 -8.9052E-06 1.9819E-05 -4.5173E-06 4.2265E-06 -1.8414E-06 9.7052E-06
S2 -1.5496E-04 -6.0669E-05 -7.2188E-05 -2.3811E-05 -2.9993E-05 -6.0512E-06 -1.1150E-05
S3 2.1452E-05 -1.6554E-05 1.6376E-05 -7.9874E-06 5.6610E-06 -8.5056E-06 3.5517E-06
S4 -8.9493E-06 5.7973E-06 -1.4995E-07 1.0448E-05 3.7538E-06 3.8862E-06 -5.9125E-06
S5 3.3269E-05 -4.9219E-06 1.2054E-05 -2.1919E-06 4.5834E-06 2.5442E-07 2.3565E-06
S6 3.2251E-05 5.8454E-06 -1.9514E-07 -1.2224E-06 -2.8329E-07 2.3361E-06 1.2814E-07
S7 -1.7566E-04 -9.5975E-05 2.7926E-05 2.4229E-05 -3.5409E-06 -5.4676E-06 7.7248E-07
S8 3.6030E-04 -1.7388E-05 -8.5618E-05 -2.7445E-05 1.5275E-05 2.0777E-05 6.4980E-06
S9 -4.3461E-05 1.5999E-05 -1.7047E-04 -1.2320E-04 -1.3028E-04 -6.5638E-05 -1.8583E-05
S10 -2.6574E-04 -3.9502E-04 2.0690E-06 2.0942E-04 -2.6023E-05 -2.5211E-05 -9.6052E-06
S11 9.5653E-03 -3.1395E-03 3.2192E-03 3.4971E-04 1.1688E-03 1.3169E-04 4.2614E-04
S12 -2.8604E-02 -1.7430E-02 9.2356E-03 1.1835E-02 -1.5889E-03 -6.6972E-03 -3.8159E-03
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 3, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the 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 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 imaging lens system according to embodiment 3 can achieve good imaging quality.
Example 4
An 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 configuration diagram of an imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the imaging lens includes, in order from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, and filter E7.
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 concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. The filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 7 shows basic parameters of the imaging lens of embodiment 4, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S12 in example 44、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000121
TABLE 7
Figure BDA0003604822200000122
Figure BDA0003604822200000131
TABLE 8-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.8239E-05 -1.4825E-05 1.3866E-05 -2.7429E-06 3.3076E-06 -7.8135E-06 3.1505E-06
S2 -3.0608E-05 1.4363E-05 -1.6990E-05 5.7831E-06 -1.0405E-05 4.5472E-06 -4.4620E-06
S3 2.5781E-05 -1.7613E-05 1.0784E-05 -8.6053E-06 1.0822E-05 -6.9232E-06 1.5525E-06
S4 -9.6250E-06 1.0199E-05 -5.1307E-06 3.3931E-07 -6.6777E-06 3.9322E-06 -1.7379E-07
S5 6.1523E-06 -7.0867E-06 6.5386E-06 -2.5973E-06 2.2079E-06 -7.4142E-07 1.9669E-07
S6 -3.3774E-07 1.6186E-05 8.1552E-06 4.0004E-06 2.1282E-06 1.1630E-06 -2.5979E-06
S7 3.0772E-04 -1.3446E-04 -1.4409E-04 -5.2177E-05 -3.3605E-05 -2.8593E-05 -1.5628E-05
S8 1.9133E-03 8.3574E-04 -2.7802E-04 -5.8289E-04 -4.1869E-04 -1.7693E-04 -4.4956E-05
S9 9.4152E-04 8.6302E-04 -2.9209E-04 -7.1089E-04 -6.5494E-04 -3.3404E-04 -1.0252E-04
S10 -4.7073E-04 -3.6585E-04 -3.3699E-04 -2.0853E-04 -2.3074E-04 -1.6886E-04 -9.5936E-05
S11 -4.7290E-03 3.2965E-03 -2.0663E-03 4.0600E-04 1.0457E-03 -1.4132E-03 3.1591E-04
S12 -4.7510E-02 -5.7943E-03 2.8407E-03 -4.8494E-03 -2.4526E-02 -1.8948E-02 -7.9277E-03
TABLE 8-2
Fig. 8A shows on-axis chromatic aberration curves of the imaging lens of embodiment 4, which represent the convergent focus shifts 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 imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the 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 imaging lens of embodiment 4, which represents a 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 imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An 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 configuration diagram of an imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. The filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 9 shows basic parameters of the imaging lens of embodiment 5, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 10-1 and 10-2 show that the aspherical mirror surfaces S1 to S12 in example 5 can be usedCoefficient of higher order term A4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000141
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 1.1523E-02 8.3463E-04 -1.0913E-03 -2.0605E-04 -1.6057E-04 3.6382E-05 -2.8379E-05
S2 -1.8632E-02 4.3149E-03 -3.1324E-04 1.1828E-04 2.1035E-05 -1.9427E-04 -9.5377E-05
S3 7.9761E-03 1.2485E-02 -4.9066E-04 7.9427E-04 3.8815E-06 5.0008E-05 -2.6356E-05
S4 7.9112E-02 7.5484E-03 3.4566E-04 3.9529E-04 1.0199E-04 1.9317E-06 1.7080E-05
S5 -1.9218E-01 -8.6685E-03 -1.7416E-03 3.8010E-04 -1.0891E-04 8.5073E-05 -3.7488E-05
S6 -2.8262E-01 1.2339E-02 4.0736E-03 2.4558E-03 -1.5746E-04 1.1206E-04 -2.8604E-05
S7 -3.3175E-01 8.3223E-02 -2.4025E-04 -3.9354E-03 -3.4495E-03 7.6143E-04 3.6470E-05
S8 -6.2761E-01 1.1657E-01 8.9928E-03 1.7314E-03 -4.3978E-03 -1.0839E-03 -4.5634E-05
S9 -1.2961E+00 -9.0911E-04 2.9432E-02 1.4738E-02 2.0533E-03 -8.0270E-04 -4.7017E-04
S10 -3.9918E-01 2.4900E-02 5.0290E-02 -2.0704E-02 -1.6325E-03 7.9154E-04 1.7324E-03
S11 -1.3284E+00 1.1798E+00 -6.6157E-01 2.2496E-01 -6.1676E-02 1.5101E-02 1.6768E-04
S12 -3.8966E+00 1.9874E-01 -2.5047E-01 -2.1958E-01 6.7771E-02 1.0420E-01 1.3083E-02
TABLE 10-1
Figure BDA0003604822200000142
Figure BDA0003604822200000151
TABLE 10-2
Fig. 10A shows on-axis chromatic aberration curves of the imaging lens of embodiment 5, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 10B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the 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 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 imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An 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 configuration diagram of an imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the 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, and a filter E7.
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 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 convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 11 shows basic parameters of the imaging lens of embodiment 6, in which the unit of the radius of curvature and the thickness/distance are millimeters (mm). Tables 12-1 and 12-2 show the coefficients A of the high-order terms which can be used for the respective aspherical mirrors S1 to S12 in example 64、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000152
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 9.4126E-03 -2.2116E-03 -1.8913E-03 -6.5862E-04 -1.8056E-04 -2.1809E-05 -5.7412E-06
S2 -2.7490E-02 4.3110E-03 -4.9522E-04 4.4056E-04 4.9641E-05 -4.9547E-05 -1.8521E-05
S3 1.3934E-02 1.6670E-02 7.0807E-04 1.1523E-03 9.7021E-05 -2.1819E-05 -8.1533E-06
S4 7.5867E-02 8.7045E-03 8.5189E-04 7.2809E-04 1.5529E-04 2.7539E-05 1.1277E-05
S5 -1.7732E-01 -8.4228E-03 -1.6912E-03 6.4870E-04 -1.3948E-05 1.1444E-04 -2.7205E-05
S6 -2.6280E-01 1.4460E-02 2.3708E-03 2.4822E-03 -1.9286E-04 1.4185E-04 -3.7238E-05
S7 -3.0063E-01 7.3447E-02 -2.8126E-03 -1.5044E-03 -1.9609E-03 5.2583E-04 1.9154E-04
S8 -6.0944E-01 1.3246E-01 3.3911E-03 -3.3985E-03 -4.2218E-03 9.9389E-06 4.2343E-04
S9 -1.4625E+00 8.4083E-02 8.5839E-02 1.2887E-02 -1.2720E-02 -3.9340E-03 7.6015E-04
S10 -2.6002E-01 5.8185E-02 4.4989E-02 -1.4841E-02 -5.1366E-03 7.1970E-03 8.1280E-04
S11 -1.5662E+00 1.0829E+00 -5.4376E-01 2.2517E-01 -8.5196E-02 3.1520E-02 -1.4930E-02
S12 -5.1814E+00 1.3176E+00 -4.2098E-01 2.1993E-01 -1.2132E-01 4.0098E-02 -2.8320E-02
TABLE 12-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.0573E-06 1.6466E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 -1.3721E-05 -3.9187E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -7.5864E-06 -8.4723E-07 1.2713E-06 -1.8184E-06 -1.7096E-06 0.0000E+00 0.0000E+00
S4 -3.7416E-06 -1.8375E-06 -4.6141E-06 -2.3676E-06 -9.9492E-07 0.0000E+00 0.0000E+00
S5 2.5856E-05 -8.0950E-06 8.9026E-06 -2.0203E-06 3.8945E-06 -1.4097E-06 0.0000E+00
S6 3.7446E-05 -5.6998E-06 -7.0617E-07 -4.9391E-06 -3.9091E-06 0.0000E+00 0.0000E+00
S7 1.7182E-05 -4.6224E-05 -1.4517E-06 8.2398E-06 -5.3566E-07 0.0000E+00 0.0000E+00
S8 2.1006E-04 -2.7894E-05 -3.4628E-05 -2.8560E-06 0.0000E+00 0.0000E+00 0.0000E+00
S9 7.5602E-04 2.6018E-06 -1.4520E-04 2.1395E-05 1.5463E-05 -9.2692E-06 -7.4840E-06
S10 -1.1933E-03 -2.9883E-04 5.0749E-06 7.0311E-05 -7.9696E-05 -8.8111E-06 5.2360E-06
S11 8.0997E-03 -5.1782E-03 2.4295E-03 -3.9797E-04 -3.2318E-04 1.6363E-04 3.3789E-05
S12 1.7012E-02 -4.9026E-03 2.6642E-03 -3.4923E-03 3.0748E-04 -2.0052E-04 8.2380E-04
TABLE 12-2
Fig. 12A shows on-axis chromatic aberration curves of the imaging lens of embodiment 6, which represent the convergent focus shifts 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 imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the 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 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 imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 13 shows basic parameters of the imaging lens of embodiment 7, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 14-1 and 14-2 show the coefficients A of the high-order terms which can be used for the respective aspherical mirrors S1 to S12 in example 74、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000171
Watch 13
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 1.1458E-02 1.5432E-03 -8.0378E-04 -1.2285E-04 -1.5769E-04 3.3265E-05 -3.3622E-05
S2 -1.7060E-02 4.7347E-03 -8.2666E-04 1.2431E-04 1.3298E-04 -4.6532E-05 4.1222E-05
S3 8.1713E-03 1.1855E-02 -1.2398E-03 6.7333E-04 -6.9830E-05 5.9365E-05 -3.8052E-05
S4 7.7516E-02 7.4700E-03 2.4001E-04 3.0888E-04 9.3581E-05 -1.1421E-05 2.5224E-05
S5 -1.8739E-01 -3.9888E-03 -8.0276E-04 4.5509E-04 -6.8972E-06 3.6262E-05 -2.9827E-05
S6 -2.8299E-01 1.5285E-02 3.7660E-03 1.9384E-03 -1.3597E-05 -8.3923E-05 -6.1092E-05
S7 -3.0955E-01 8.1518E-02 1.3739E-03 -3.7405E-03 -2.7205E-03 4.8959E-04 1.0300E-03
S8 -5.9618E-01 9.6374E-02 1.8597E-02 8.1253E-04 -6.1541E-03 -4.0402E-03 5.5367E-04
S9 -1.4152E+00 1.8513E-02 6.0842E-02 1.0935E-02 1.5993E-03 -4.3939E-03 -1.8291E-03
S10 -2.7907E-01 7.5096E-02 2.0411E-02 -2.6595E-02 6.3864E-04 2.8611E-03 1.3070E-04
S11 -8.9891E-01 1.1291E+00 -5.9513E-01 1.9474E-01 -3.1408E-02 1.8490E-02 9.0722E-03
S12 -3.4809E+00 3.1728E-01 -3.1746E-01 -2.7937E-01 4.8517E-02 1.0716E-01 5.0950E-02
TABLE 14-1
Figure BDA0003604822200000172
Figure BDA0003604822200000181
TABLE 14-2
Fig. 14A shows on-axis chromatic aberration curves of the imaging lens of embodiment 7, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the 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 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 imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An 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 configuration diagram of an imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the imaging lens, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.
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 convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging surface S15.
Table 15 shows basic parameters of the imaging lens of embodiment 8, in which the unit of the radius of curvature and the thickness/distance are millimeters (mm). Tables 16-1 and 16-2 show the coefficients A of the high-order terms which can be used for the respective aspherical mirrors S1 to S12 in example 84、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000182
Figure BDA0003604822200000191
Watch 15
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 1.2491E-02 1.6193E-03 -8.3335E-04 -1.4061E-04 -1.6337E-04 3.3016E-05 -3.2316E-05
S2 -1.6633E-02 4.5858E-03 -8.9812E-04 1.4841E-04 1.1662E-04 -7.0472E-05 2.4737E-05
S3 8.1478E-03 1.1706E-02 -1.2103E-03 6.6610E-04 -7.6256E-05 5.9815E-05 -3.8911E-05
S4 7.7423E-02 7.5968E-03 3.0696E-04 2.9109E-04 8.8342E-05 -1.6484E-05 2.4388E-05
S5 -1.8746E-01 -3.6050E-03 -8.9316E-04 4.0145E-04 -4.7071E-05 2.2843E-05 -3.5496E-05
S6 -2.8207E-01 1.4703E-02 3.2178E-03 1.7696E-03 -1.2613E-04 -1.2833E-04 -5.9411E-05
S7 -3.0228E-01 8.3831E-02 7.8482E-04 -2.8882E-03 -2.9654E-03 1.7025E-04 8.9547E-04
S8 -6.2821E-01 9.3592E-02 1.8123E-02 1.5673E-03 -5.8827E-03 -3.9465E-03 1.8924E-04
S9 -1.3869E+00 1.4848E-02 6.7094E-02 9.6830E-03 -8.7097E-04 -3.5000E-03 -9.6416E-04
S10 -2.8993E-01 5.7948E-02 1.5902E-02 -2.9985E-02 -2.3580E-03 4.3729E-03 1.0772E-03
S11 -8.8794E-01 1.1144E+00 -5.8058E-01 1.9856E-01 -3.6639E-02 1.8762E-02 6.6460E-03
S12 -3.4255E+00 3.0699E-01 -3.3284E-01 -2.5823E-01 2.7961E-02 9.2853E-02 5.4206E-02
TABLE 16-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.7201E-05 -1.5256E-05 1.2600E-05 -2.1276E-06 2.6446E-06 -7.1809E-06 2.9436E-06
S2 -4.6982E-05 -7.2066E-07 -2.6099E-05 6.3248E-07 -1.2766E-05 2.1716E-06 -6.0914E-06
S3 2.4385E-05 -1.7784E-05 1.1432E-05 -8.5735E-06 1.0452E-05 -6.7949E-06 1.5278E-06
S4 -1.0037E-05 1.2449E-05 -5.0089E-06 5.8006E-07 -6.4913E-06 3.6546E-06 -2.5900E-07
S5 3.8226E-06 -6.9940E-06 4.3869E-06 -2.9061E-06 1.3567E-06 -8.6358E-07 4.5078E-07
S6 7.6194E-07 2.0359E-05 6.5510E-06 6.6241E-06 1.3012E-06 1.1248E-06 -2.7324E-06
S7 3.3667E-04 -4.8603E-05 -8.2931E-05 -1.0123E-05 -9.9746E-06 -1.2112E-05 -1.2463E-05
S8 1.7450E-03 1.1505E-03 1.8626E-04 -2.4064E-04 -2.6120E-04 -1.2996E-04 -4.0826E-05
S9 9.5650E-04 2.4113E-04 -7.3858E-04 -5.8806E-04 -1.6499E-04 2.4097E-05 1.1877E-05
S10 -4.5357E-04 -3.5392E-04 -3.7332E-04 -3.5654E-04 -3.1183E-04 -1.7342E-04 -7.7123E-05
S11 -2.0618E-03 2.4803E-03 -6.7366E-04 -2.3222E-03 -8.7075E-05 -2.0165E-03 -7.6339E-04
S12 -2.6403E-02 -8.5462E-03 -7.5638E-03 -1.4173E-02 -2.4266E-02 -1.5637E-02 -5.9870E-03
TABLE 16-2
Fig. 16A shows an on-axis chromatic aberration curve of an imaging lens of embodiment 8, which represents a convergent focus deviation 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 imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the 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 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 imaging lens according to embodiment 8 can achieve good imaging quality.
Example 9
An 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 diagram showing a configuration of an imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the 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, and a filter E7.
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 convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The imaging lens has an imaging surface S15, and light from an object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 17 shows basic parameters of the imaging lens of embodiment 9, in which the unit of the radius of curvature and the thickness/distance are millimeters (mm). Tables 18-1 and 18-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 through S12 in example 94、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Figure BDA0003604822200000201
TABLE 17
Figure BDA0003604822200000202
Figure BDA0003604822200000211
TABLE 18-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -2.3639E-05 -1.7365E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 -1.6600E-05 -8.3999E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -7.4549E-06 -1.2515E-06 2.8292E-06 -1.1239E-06 -4.2329E-06 0.0000E+00 0.0000E+00
S4 1.5004E-05 7.6711E-06 3.8336E-06 -1.8213E-06 -1.9762E-06 0.0000E+00 0.0000E+00
S5 8.9998E-06 -1.1347E-05 8.6398E-07 -2.4107E-06 1.1126E-06 1.3418E-06 0.0000E+00
S6 4.7794E-05 -1.3820E-05 -9.5826E-06 -9.5636E-06 -5.5213E-06 0.0000E+00 0.0000E+00
S7 -2.0030E-04 -1.2396E-05 5.4732E-05 -1.5836E-05 -6.9116E-06 0.0000E+00 0.0000E+00
S8 -6.6657E-04 -4.4341E-04 5.3253E-05 6.5420E-05 0.0000E+00 0.0000E+00 0.0000E+00
S9 1.3923E-03 -8.7028E-04 -6.4263E-04 -1.2486E-05 8.8580E-05 5.4051E-05 -1.5041E-05
S10 -1.9479E-03 -3.3942E-05 2.0611E-04 1.2114E-04 -7.1815E-06 1.7359E-05 -3.3089E-05
S11 9.3008E-03 -5.3388E-03 3.0601E-03 -1.2916E-03 1.4046E-04 1.9020E-04 -7.5357E-05
S12 1.7983E-02 -4.6648E-03 3.4891E-03 -3.1039E-03 4.3335E-04 -3.7528E-04 6.5829E-04
TABLE 18-2
Fig. 18A shows an on-axis chromatic aberration curve of an imaging lens of embodiment 9, which represents a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 9. Fig. 18C shows a distortion curve of the 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 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 imaging lens according to embodiment 9 can achieve good imaging quality.
Further, in embodiments 1 to 9, the distance TTL along the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens, the half ImgH of the diagonal length of the effective pixel area on the imaging surface, the half Semi-FOV of the maximum angle of view of the imaging lens, the f-stop number Fno of the imaging lens, the effective focal length f of the imaging lens, and the effective focal length values f1 to f6 of the respective lenses are as shown in table 19.
Parameters/embodiments 1 2 3 4 5 6 7 8 9
TTL(mm) 7.20 7.20 7.23 7.52 7.29 7.36 7.50 7.56 7.24
ImgH(mm) 5.75 5.75 5.50 5.75 5.75 5.75 5.50 5.75 5.50
Semi-FOV(°) 42.99 43.42 41.82 41.43 42.87 42.68 40.42 41.37 41.50
Fno 1.76 1.81 1.81 1.81 1.81 1.85 1.81 1.81 1.76
f(mm) 6.05 5.94 5.90 6.25 5.97 6.13 6.22 6.27 6.08
f1(mm) 5.57 5.62 5.62 5.55 5.63 5.54 5.59 5.57 5.59
f2(mm) -16.30 -15.62 -15.49 -14.56 -15.28 -16.87 -14.82 -14.72 -16.13
f3(mm) -53.19 -55.26 -52.19 -54.18 -55.05 -38.31 -44.43 -56.18 -53.21
f4(mm) 85.22 44.93 41.64 39.96 41.30 62.53 35.07 122.01 84.05
f5(mm) 6.15 6.06 6.91 8.21 8.03 6.34 8.36 7.45 6.16
f6(mm) -4.12 -4.11 -4.37 -4.49 -4.43 -4.17 -4.49 -4.49 -4.12
Table 19 examples 1 to 9 each satisfied the conditions shown in table 20.
Figure BDA0003604822200000212
Figure BDA0003604822200000221
Watch 20
The present application also provides an imaging Device, which is provided with an electron photosensitive element to form an image, wherein the electron photosensitive element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (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 above-described imaging lens.
The foregoing description is only exemplary of the preferred embodiments 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 protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (17)

1. The image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein,
the third lens has negative focal power, 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; the fourth lens has positive optical power; the fifth lens has positive focal power; the object side surface of the sixth lens is a concave surface;
the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens along the optical axis, half Semi-FOV of the maximum field angle of the camera lens and the effective focal length f of the camera lens meet the following conditions: TTL/(tan (Semi-FOV) × f) < 1.6;
half of the diagonal length ImgH of the effective pixel area on the imaging plane satisfies: 4.75mm < ImgH <7 mm.
2. The imaging lens of claim 1, wherein an entrance pupil diameter EPD of the imaging lens satisfies:
f/EPD<2。
3. the imaging lens according to claim 1, characterized in that:
5.7mm<tan(Semi-FOV)×TTL<8mm。
4. the imaging lens according to claim 1, wherein an effective focal length f2 of the second lens and an effective focal length f3 of the third lens satisfy:
0<f2/f3<1。
5. the imaging lens according to claim 1, wherein an effective focal length f5 of the fifth lens and an effective focal length f1 of the first lens satisfy:
0.5<f5/f1<2。
6. the imaging lens according to claim 1, wherein an edge thickness ET5 of the fifth lens and a center thickness CT5 of the fifth lens on the optical axis satisfy:
ET5/CT5≥1.5。
7. the imaging lens according to claim 1, wherein the first lens to the fourth lens constitute a first lens group, the fifth lens and the sixth lens constitute a second lens group, and an effective focal length fa of the first lens group and an effective focal length fb of the second lens group satisfy:
-1<fa/fb<0。
8. the imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy:
0.5<CT1/CT5<1.8。
9. the imaging lens according to claim 1, wherein a radius of curvature R6 of an image-side surface of the third lens and a radius of curvature R5 of an object-side surface of the third lens satisfy:
0<R6/R5<1。
10. the imaging lens according to claim 1, wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy:
0<CT3/CT4≤0.59。
11. the imaging lens according to any one of claims 1 to 10, wherein a combined focal length f12 of the first lens and the second lens satisfies:
0.7<f12/f<1.8。
12. the imaging lens according to any one of claims 1 to 10, wherein an on-axis distance SAG22 from an intersection of an image side surface of the second lens and the optical axis to an effective radius vertex of the image side surface of the second lens and an on-axis distance SAG31 from an intersection of an object side surface of the third lens and the optical axis to an effective radius vertex of an object side surface of the third lens satisfy:
1<T23/(SAG22-SAG31)<2.2。
13. the imaging lens according to any one of claims 1 to 10, wherein an on-axis distance SAG62 from an intersection point of a distance T56 separating the fifth lens and the sixth lens on the optical axis and an image side surface of the sixth lens and the optical axis to an effective radius vertex of the image side surface of the sixth lens satisfies:
-2<T56/SAG62<0。
14. the imaging lens according to any one of claims 1 to 10, wherein a maximum effective radius DT62 of an image side surface of the sixth lens and a maximum effective radius DT42 of an image side surface of the fourth lens satisfy:
1.5<DT62/DT42<2.6。
15. the imaging lens according to any one of claims 1 to 10, wherein an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and an edge thickness ET4 of the fourth lens satisfy:
0.6<(ET1+ET2)/(ET3+ET4)<2。
16. the imaging lens according to any one of claims 1 to 10,
the first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, and the object side surface of the second lens is a convex surface while the image side surface of the second lens is a concave surface.
17. The imaging lens according to any one of claims 1 to 10,
the image side surface of the fifth lens is a convex surface;
the sixth lens has a negative power.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116594154A (en) * 2023-07-13 2023-08-15 江西联益光学有限公司 Optical lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116594154A (en) * 2023-07-13 2023-08-15 江西联益光学有限公司 Optical lens
CN116594154B (en) * 2023-07-13 2023-10-27 江西联益光学有限公司 Optical lens

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