CN213843657U - Camera lens group and electronic equipment comprising same - Google Patents
Camera lens group and electronic equipment comprising same Download PDFInfo
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- CN213843657U CN213843657U CN202022992227.2U CN202022992227U CN213843657U CN 213843657 U CN213843657 U CN 213843657U CN 202022992227 U CN202022992227 U CN 202022992227U CN 213843657 U CN213843657 U CN 213843657U
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Abstract
The present application relates to a photographing lens assembly and an electronic device including the same, wherein the photographing lens assembly sequentially comprises, 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 second lens with negative focal power, 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 image side surface of the third lens is a convex surface; a fourth lens having a negative refractive power, an image-side surface of which is concave; the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface; sixth lens having negative refractive powerThe image side surface is concave. The maximum half field angle Semi-FOV of the camera lens group and the total effective focal length f of the camera lens group can satisfy the following conditions: 4.50<tan2(Semi‑FOV)×f<6.00。
Description
Technical Field
The present application relates to the field of optical elements, and in particular, to a photographing lens assembly and an electronic apparatus including the same.
Background
With the continuous development of smart phones, the specifications of camera lens groups of smart phones need to be upgraded accordingly. For example, a camera lens group having high resolution and high pixel is more and more popular with consumers, but the height of the camera lens group needs to be increased for achieving the purpose of high resolution and high pixel, which is contrary to the trend of thinner mobile phones.
Therefore, in order to satisfy the demand for a photographing lens group on a high-end smart phone in the market, it is necessary to design a photographing lens group having a large image plane and a short height.
SUMMERY OF THE UTILITY MODEL
In one aspect, the present application provides an image capturing lens assembly, in order from an object side to an image side along an optical axis, comprising: the first lens with positive focal power has a convex object-side surface and a concave image-side surface; the second lens with negative focal power, 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 image side surface of the third lens is a convex surface; a fourth lens having a negative refractive power, an image-side surface of which is concave; the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface; a sixth lens having a negative refractive power, an image-side surface of which is concave; and the maximum half field angle Semi-FOV of the camera lens group and the total effective focal length f of the camera lens group can satisfy: 4.50<tan2(Semi-FOV)×f<6.00。
In some embodiments, the distance TTL from the object side surface of the first lens element to the imaging surface of the image capturing lens group on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the image capturing lens group may satisfy: TTL/ImgH < 1.20.
In some embodiments, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the imaging lens group, may satisfy: 5.00mm < ImgH.
In some embodiments, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens may satisfy: 4.00< f3/f1< 11.00.
In some embodiments, the combined focal length f23 of the second lens and the third lens and the distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface of the imaging lens group can satisfy: -57.00< f23/BFL < -24.00.
In some embodiments, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 1.00< R3/R4< 3.00.
In some embodiments, the radius of curvature R6 of the image-side surface of the third lens and the effective focal length f6 of the sixth lens satisfy: 4.00< R6/f6< 8.50.
In some embodiments, the central thickness CT6 of the sixth lens on the optical axis and the separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 2.00< (T56+ CT6)/(T56-CT6) < 8.00.
In some embodiments, the edge thickness ET2 of the second lens and the edge thickness ET5 of the fifth lens may satisfy: 4.00< (ET2+ ET5)/(ET2-ET5) < 20.00.
In some embodiments, a distance SAG41 on the optical axis from the intersection of the object-side surface of the fourth lens and the optical axis to the effective radius vertex of the object-side surface of the fourth lens and a distance SAG42 on the optical axis from the intersection of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens may satisfy: 6.00< (SAG41+ SAG42)/(SAG41-SAG42) < 9.50.
In some embodiments, the maximum effective radius DT51 of the object-side surface of the fifth lens and the maximum effective radius DT52 of the image-side surface of the fifth lens may satisfy: 16.00< (DT51+ DT52)/(DT51-DT52) < 23.00.
In another aspect, the present application provides an image capturing lens assembly, in order from an object side to an image side along an optical axis, comprising: the first lens with positive focal power has a convex object-side surface and a concave image-side surface; the second lens with negative focal power, 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 image side surface of the third lens is a convex surface; a fourth lens having a negative refractive power, an image-side surface of which is concave; the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface; a sixth lens having a negative refractive power, an image-side surface of which is concave; and the distance TTL from the object side surface of the first lens to the imaging surface of the shooting lens group on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the shooting lens group can satisfy the following conditions: TTL/ImgH < 1.20.
In some embodiments, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the imaging lens group, may satisfy: 5.00mm < ImgH.
In some embodiments, the maximum half field angle Semi-FOV of the image capturing lens group and the total effective focal length f of the image capturing lens group may satisfy: 4.50<tan2(Semi-FOV)×f<6.00。
In some embodiments, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens may satisfy: 4.00< f3/f1< 11.00.
In some embodiments, the combined focal length f23 of the second lens and the third lens and the distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface of the imaging lens group can satisfy: -57.00< f23/BFL < -24.00.
In some embodiments, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 1.00< R3/R4< 3.00.
In some embodiments, the radius of curvature R6 of the image-side surface of the third lens and the effective focal length f6 of the sixth lens satisfy: 4.00< R6/f6< 8.50.
In some embodiments, the central thickness CT6 of the sixth lens on the optical axis and the separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 2.00< (T56+ CT6)/(T56-CT6) < 8.00.
In some embodiments, the edge thickness ET2 of the second lens and the edge thickness ET5 of the fifth lens may satisfy: 4.00< (ET2+ ET5)/(ET2-ET5) < 20.00.
In some embodiments, the maximum effective radius DT51 of the object-side surface of the fifth lens and the maximum effective radius DT52 of the image-side surface of the fifth lens may satisfy: 16.00< (DT51+ DT52)/(DT51-DT52) < 23.00.
In some embodiments, a distance SAG41 on the optical axis from the intersection of the object-side surface of the fourth lens and the optical axis to the effective radius vertex of the object-side surface of the fourth lens and a distance SAG42 on the optical axis from the intersection of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens may satisfy: 6.00< (SAG41+ SAG42)/(SAG41-SAG42) < 9.50.
In another aspect, the present application provides an electronic device comprising a camera lens group provided according to the present application and an imaging element for converting an optical image formed by the camera lens group into an electrical signal.
The six-lens shooting lens group has the advantages of being small in size, large in image surface, short in height, ultra-thin, high in imaging quality 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 when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of a photographing lens group according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 1;
fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 2;
fig. 5 is a schematic view showing the structure of a photographing lens group 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 image capturing lens group of embodiment 3;
fig. 7 is a schematic view showing the structure of a photographing lens group according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 4;
fig. 9 is a schematic view showing the structure of a photographing lens group according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 5;
fig. 11 is a schematic view showing the structure of a photographing lens group according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image taking lens group of embodiment 6;
fig. 13 is a schematic view showing the structure of a photographing lens group according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 7;
fig. 15 is a schematic view showing the structure of a photographing lens group according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 8.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the image side is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The features, principles and other aspects of the present application are described in detail below.
The photographing lens group according to an exemplary embodiment of the present application may include six lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, respectively. The six lens elements are arranged along the optical axis of the photographing lens assembly in order from an object side to an image side, and an air space is formed between any two adjacent lens elements.
In an exemplary embodiment, the first lens may have a positive optical power, and the object side surface may be convex and the image side surface may be concave. This arrangement of the first lens facilitates light convergence and can be matched with the second lens.
In an exemplary embodiment, the second lens can have a negative power, and the object side surface can be convex and the image side surface can be concave. The arrangement of the second lens can reduce the height of light on the lens, and is beneficial to the molding of the second lens.
In an exemplary embodiment, the third lens may have positive optical power, and the image-side surface thereof may be convex. The arrangement of the third lens can enable the third lens and the first lens and the second lens to form a symmetrical system, and is beneficial to correcting system distortion and vertical axis chromatic aberration.
In an exemplary embodiment, the fourth lens may have a negative optical power, and the image-side surface thereof may be concave. The arrangement of the fourth lens can share part of the optical power of the first lens and the second lens, thereby avoiding the problem of too large angle caused by too large optical power of the first lens and the second lens.
In an exemplary embodiment, the fifth lens element may have a positive optical power, and the object-side surface thereof may be convex and the image-side surface thereof may be convex. The arrangement of the fifth lens can reasonably distribute the optical path difference of the inner and outer fields of view, thereby reducing the field curvature difference of the inner and outer fields of view.
In an exemplary embodiment, the sixth lens may have a negative optical power, and the image-side surface thereof may be concave. This arrangement of the sixth lens may converge the rays of the central field of view, thereby reducing aberrations.
In an exemplary embodiment, the maximum half field angle Semi-FOV of the image capturing lens group and the total effective focal length f of the image capturing lens group may satisfy: 4.50<tan2(Semi-FOV)×f<6.00. Satisfies 4.50<tan2(Semi-FOV)×f<6.00, on one hand, the height of the image surface can be reasonably controlled, so that the characteristic of a large image surface is realized; on the other hand, the equivalent focal length of the camera lens group can be reasonably controlled, so that the wide-angle and telephoto lenses are matched, and high-power light variation is realized. More specifically, Semi-FOV and f further satisfy: 4.80<tan2(Semi-FOV)×f<5.50。
In an exemplary embodiment, a distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the image taking lens group and half of the diagonal length of the effective pixel area on the imaging surface of the image taking lens group may satisfy: TTL/ImgH < 1.20. The TTL/ImgH is less than 1.20, and the ultrathin characteristic can be realized, so that the camera lens group can be suitable for various electronic equipment which is thinner and thinner at present. More specifically, TTL and ImgH may further satisfy: TTL/ImgH < 1.18.
In an exemplary embodiment, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the imaging lens group, may satisfy: 5.00mm < ImgH. The requirement that the length of the image capture lens group is 5.00mm < ImgH can be met, and the image capture lens group has the characteristic of a large image surface. More specifically, ImgH further satisfies: 5.25mm < ImgH.
In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens may satisfy: 4.00< f3/f1< 11.00. The requirement that f3/f1 is 4.00< 11.00 is met, so that on one hand, the height of the camera lens group can be reduced, and the ultra-thin characteristic is realized; on the other hand, aberrations can be reduced, thereby achieving high imaging quality. More specifically, f1 and f3 may further satisfy: 4.50< f3/f1< 11.00.
In an exemplary embodiment, a combined focal length f23 of the second lens and the third lens and a distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface of the image pickup lens group may satisfy: -57.00< f23/BFL < -24.00. Satisfying-57.00 < f23/BFL < -24.00, on the one hand, is beneficial for balancing the aberration of the second lens and the third lens, especially the vertical axis aberration; on the other hand, the angle of the light can be controlled, so that the light is prevented from striking the lens cone to form tail stray light. More specifically, f23 and BFL further satisfy: -57.00< f23/BFL < -24.50.
In an exemplary embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 1.00< R3/R4< 3.00. The requirement of 1.00< R3/R4<3.00 can control the shape of the second lens, and is beneficial to processing and molding the second lens. More specifically, R3 and R4 may further satisfy: 1.30< R3/R4< 2.8.
In an exemplary embodiment, the radius of curvature R6 of the image-side surface of the third lens and the effective focal length f6 of the sixth lens may satisfy: 4.00< R6/f6< 8.50. 4.00< R6/f6<8.50 is satisfied, so that the spherical aberration of the third lens and the sixth lens is balanced; on the other hand, it is advantageous to prevent the shape of the sixth lens from being excessively curved. More specifically, R6 and f6 may further satisfy: 4.50< R6/f6< 8.30.
In an exemplary embodiment, the central thickness CT6 of the sixth lens on the optical axis and the separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: 2.00< (T56+ CT6)/(T56-CT6) < 8.00. The requirements of 2.00< (T56+ CT6)/(T56-CT6) <8.00 are met, and on one hand, the size of the photographing lens group is favorably shortened, so that the ultra-thin characteristic is realized; and on the other hand, the generation of ghost images between the lenses is prevented. More specifically, CT6 and T56 further satisfy: 2.50< (T56+ CT6)/(T56-CT6) < 7.85.
In an exemplary embodiment, the edge thickness ET2 of the second lens and the edge thickness ET5 of the fifth lens may satisfy: 4.00< (ET2+ ET5)/(ET2-ET5) < 20.00. Satisfying 4.00< (ET2+ ET5)/(ET2-ET5) <20.00, the edge thickness of the second lens and the fifth lens can be made larger, which is beneficial to the molding of the lens. More specifically, ET2 and ET5 further satisfy: 4.20< (ET2+ ET5)/(ET2-ET5) < 19.80.
In an exemplary embodiment, a distance SAG41 on the optical axis from an intersection point of the object-side surface of the fourth lens and the optical axis to an effective radius vertex of the object-side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of the image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens may satisfy: 6.00< (SAG41+ SAG42)/(SAG41-SAG42) < 9.50. Satisfies 6.00< (SAG41+ SAG42)/(SAG41-SAG42) <9.50, and on the one hand facilitates the molding of the fourth lens; on the other hand, according to the difference of the convergence capacity of the light rays in different fields, the aberration of different fields is balanced, and the image resolving power is improved. More specifically, SAG41 and SAG42 further may satisfy: 6.10< (SAG41+ SAG42)/(SAG41-SAG42) < 9.20.
In an exemplary embodiment, the maximum effective radius DT51 of the object-side surface of the fifth lens and the maximum effective radius DT52 of the image-side surface of the fifth lens may satisfy: 16.00< (DT51+ DT52)/(DT51-DT52) < 23.00. The height of the light rays on the fifth lens can be controlled, and the requirements of 16.00< (DT51+ DT52)/(DT51-DT52) <23.00 are met, so that the resolution power is improved, and the stray light risk caused by the over-steep light rays is reduced. More specifically, DT51 and DT52 further satisfy: 16.10< (DT51+ DT52)/(DT51-DT52) < 22.80.
In an exemplary embodiment, the above-mentioned photographing lens group may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be disposed before the first lens. Optionally, the above-mentioned image pickup lens group may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on an image plane.
The image pickup lens group 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 shape, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the camera lens group can be effectively reduced, the machinability of the camera lens group is improved, and the camera lens group is more favorable for production and processing and is suitable for portable electronic products. The imaging lens group configured as described above can have features such as miniaturization, ultra-thinning, large image plane, short height, and good imaging quality.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror, that is, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror. 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 lens center to the lens periphery, an aspherical lens has a better curvature radius characteristic, and has an advantage of improving distortion aberration, that is, astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses constituting the imaging lens group can 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 image pickup lens group is not limited to including six lenses. The imaging lens group may also include other numbers of lenses, if desired.
Specific examples of the image pickup lens group applicable to the above embodiments are further described below with reference to the drawings.
Example 1
An image capturing lens group 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 image capturing lens group according to embodiment 1 of the present application.
As shown in fig. 1, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 1 shows a basic parameter table of the image pickup lens group of embodiment 1, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In the present example, the total effective focal length f of the image capturing lens group is 5.12mm, the total length TTL of the image capturing lens group (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the image capturing lens group) is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 2.00, and the maximum half field angle Semi-FOV of the image capturing lens group is 45.4 °.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Tables 2 and 3 show the high-order coefficient coefficients a4, A6, A8, a10, a12, a14, a16, a18, a20, a22, a24, a26, a28, and a30, which can be used for each of the aspherical mirrors S1 through S12 in example 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 3.7531E-03 | -1.9094E-02 | 1.3735E-01 | -5.3305E-01 | 1.2794E+00 | -1.9881E+00 | 2.0357E+00 |
| S2 | -4.3526E-02 | 1.8354E-01 | -1.7831E+00 | 1.1286E+01 | -4.7274E+01 | 1.3728E+02 | -2.8414E+02 |
| S3 | -3.9983E-02 | -1.1236E-01 | 1.4317E+00 | -8.5190E+00 | 3.3117E+01 | -8.8036E+01 | 1.6428E+02 |
| S4 | -2.8648E-02 | 2.6042E-01 | -2.3839E+00 | 1.4997E+01 | -6.1625E+01 | 1.7234E+02 | -3.3544E+02 |
| S5 | -2.8520E-02 | -2.5736E-01 | 2.3210E+00 | -1.3137E+01 | 4.9051E+01 | -1.2752E+02 | 2.3752E+02 |
| S6 | -6.0231E-02 | -4.7585E-03 | 8.9362E-02 | -3.0698E-01 | 4.9193E-01 | -4.6464E-01 | 2.6267E-01 |
| S7 | -1.3089E-01 | 3.6418E-02 | 1.4470E-01 | -5.1710E-01 | 9.7095E-01 | -1.2241E+00 | 1.0839E+00 |
| S8 | -1.5457E-01 | 8.4350E-02 | -6.4145E-02 | 9.2719E-02 | -1.4882E-01 | 1.7740E-01 | -1.4763E-01 |
| S9 | -4.8541E-02 | -1.0662E-02 | 2.3385E-02 | -2.6328E-02 | 2.7764E-02 | -2.2438E-02 | 1.2713E-02 |
| S10 | 6.8850E-03 | -1.5007E-02 | 1.6987E-02 | -1.5397E-02 | 1.1770E-02 | -5.6441E-03 | 1.5682E-03 |
| S11 | -1.8563E-01 | 6.6251E-02 | -8.9994E-03 | -1.0785E-03 | 7.1573E-04 | -1.4655E-04 | 1.6276E-05 |
| S12 | -2.0412E-01 | 1.0723E-01 | -4.6123E-02 | 1.5374E-02 | -3.8543E-03 | 7.1817E-04 | -9.9274E-05 |
TABLE 2
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.3645E+00 | 5.7600E-01 | -1.3890E-01 | 1.4586E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 4.2490E+02 | -4.5998E+02 | 3.5679E+02 | -1.9316E+02 | 6.9260E+01 | -1.4771E+01 | 1.4175E+00 |
| S3 | -2.1813E+02 | 2.0639E+02 | -1.3750E+02 | 6.2633E+01 | -1.8400E+01 | 3.0971E+00 | -2.2135E-01 |
| S4 | 4.5747E+02 | -4.3288E+02 | 2.7505E+02 | -1.0856E+02 | 2.1418E+01 | -8.4889E-02 | -5.0599E-01 |
| S5 | -3.2157E+02 | 3.1720E+02 | -2.2571E+02 | 1.1289E+02 | -3.7664E+01 | 7.5290E+00 | -6.8224E-01 |
| S6 | -8.2066E-02 | 1.0918E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -6.7944E-01 | 3.0091E-01 | -9.2476E-02 | 1.8773E-02 | -2.2526E-03 | 1.1960E-04 | 0.0000E+00 |
| S8 | 8.6059E-02 | -3.5129E-02 | 9.9447E-03 | -1.9075E-03 | 2.3619E-04 | -1.7027E-05 | 5.4264E-07 |
| S9 | -5.0609E-03 | 1.4199E-03 | -2.7785E-04 | 3.6951E-05 | -3.1751E-06 | 1.5879E-07 | -3.5086E-09 |
| S10 | -2.2844E-04 | 6.1553E-06 | 3.7907E-06 | -7.2071E-07 | 6.2309E-08 | -2.7584E-09 | 5.0503E-11 |
| S11 | -8.8987E-07 | -1.0510E-08 | 5.6393E-09 | -4.4147E-10 | 1.7889E-11 | -3.8919E-13 | 3.6099E-15 |
| S12 | 1.0169E-05 | -7.6716E-07 | 4.1993E-08 | -1.6195E-09 | 4.1667E-11 | -6.4126E-13 | 4.4617E-15 |
TABLE 3
Fig. 2A shows a chromatic aberration curve on the axis of the image-taking lens group of embodiment 1, which represents the deviation of the convergent focus 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 image pickup lens group of embodiment 1. Fig. 2C shows a distortion curve of the image capturing lens group 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 group of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the image capturing lens assembly of embodiment 1 can achieve good image quality.
Example 2
An image capturing lens group according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. Fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application.
As shown in fig. 3, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a 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 convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image-taking lens group is 4.99mm, the total length TTL of the image-taking lens group is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image-taking lens group is 5.27mm, the aperture value Fno of the image-taking lens group is 2.06, and the maximum half field angle Semi-FOV of the image-taking lens group is 45.2 °.
Table 4 shows a basic parameter table of the image pickup lens group of embodiment 2, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 5 and 6 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of each aspherical mirror surface S1-S12 which can be used in example 2. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 4
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -9.3103E-04 | 3.7744E-03 | 1.6918E-01 | -1.2444E+00 | 4.2481E+00 | -8.4401E+00 | 1.0461E+01 |
| S2 | -3.4608E-02 | 2.4808E-02 | -9.3386E-02 | 1.8742E-01 | 4.1767E-01 | -3.0064E+00 | 6.9372E+00 |
| S3 | -4.1658E-02 | -7.9024E-02 | 1.1768E+00 | -7.1359E+00 | 2.7194E+01 | -6.8985E+01 | 1.2003E+02 |
| S4 | -2.6770E-02 | 2.3839E-01 | -2.2303E+00 | 1.4428E+01 | -6.1336E+01 | 1.7908E+02 | -3.6891E+02 |
| S5 | -3.6146E-02 | -1.0651E-01 | 7.6429E-01 | -3.5963E+00 | 1.0677E+01 | -2.1059E+01 | 2.7755E+01 |
| S6 | -4.9965E-02 | -5.0778E-02 | 2.1255E-01 | -5.1658E-01 | 7.2085E-01 | -6.2271E-01 | 3.2822E-01 |
| S7 | -1.5215E-01 | 2.3592E-01 | -8.1762E-01 | 2.2897E+00 | -4.4190E+00 | 5.9175E+00 | -5.6056E+00 |
| S8 | -1.5417E-01 | 9.7397E-02 | -1.1905E-01 | 2.0799E-01 | -3.0079E-01 | 3.1381E-01 | -2.3416E-01 |
| S9 | -4.5739E-02 | -1.4371E-02 | 3.3696E-02 | -4.4817E-02 | 4.6601E-02 | -3.4288E-02 | 1.7581E-02 |
| S10 | 1.0771E-02 | -3.2030E-02 | 5.0417E-02 | -5.2959E-02 | 3.8261E-02 | -1.8015E-02 | 5.5195E-03 |
| S11 | -1.8290E-01 | 6.4844E-02 | -8.7714E-03 | -1.0383E-03 | 6.9106E-04 | -1.4226E-04 | 1.6120E-05 |
| S12 | -1.9746E-01 | 1.0218E-01 | -4.3578E-02 | 1.4429E-02 | -3.5878E-03 | 6.6168E-04 | -9.0369E-05 |
TABLE 5
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -8.2090E+00 | 3.9666E+00 | -1.0773E+00 | 1.2583E-01 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -8.0760E+00 | 3.6604E+00 | 2.4681E+00 | -4.6779E+00 | 2.9694E+00 | -9.1691E-01 | 1.1512E-01 |
| S3 | -1.4485E+02 | 1.2034E+02 | -6.6653E+01 | 2.2722E+01 | -3.7811E+00 | -3.2930E-02 | 7.5147E-02 |
| S4 | 5.4379E+02 | -5.7517E+02 | 4.3243E+02 | -2.2527E+02 | 7.7193E+01 | -1.5630E+01 | 1.4149E+00 |
| S5 | -2.3436E+01 | 1.0434E+01 | 8.2849E-01 | -4.2290E+00 | 2.6026E+00 | -7.4662E-01 | 8.7542E-02 |
| S6 | -9.6450E-02 | 1.2114E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | 3.7882E+00 | -1.8139E+00 | 6.0082E-01 | -1.3093E-01 | 1.6901E-02 | -9.8022E-04 | 0.0000E+00 |
| S8 | 1.2550E-01 | -4.8106E-02 | 1.3003E-02 | -2.4118E-03 | 2.9160E-04 | -2.0677E-05 | 6.5205E-07 |
| S9 | -6.3901E-03 | 1.6571E-03 | -3.0351E-04 | 3.8202E-05 | -3.1350E-06 | 1.5078E-07 | -3.2210E-09 |
| S10 | -1.1052E-03 | 1.4132E-04 | -1.0420E-05 | 2.5273E-07 | 2.2967E-08 | -2.0302E-09 | 4.9433E-11 |
| S11 | -9.5707E-07 | 3.7467E-09 | 4.1872E-09 | -3.5230E-10 | 1.4527E-11 | -3.1711E-13 | 2.9344E-15 |
| S12 | 9.1331E-06 | -6.7913E-07 | 3.6611E-08 | -1.3897E-09 | 3.5176E-11 | -5.3247E-13 | 3.6432E-15 |
TABLE 6
Fig. 4A shows a chromatic aberration curve on the axis of the image-taking lens group of embodiment 2, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 2. Fig. 4C shows a distortion curve of the image capturing lens group 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 group of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the image capturing lens assembly according to embodiment 2 can achieve good image quality.
Example 3
An image capturing lens group according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural view of a photographing lens group according to embodiment 3 of the present application.
As shown in fig. 5, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image-taking lens group is 5.05mm, the total length TTL of the image-taking lens group is 6.15mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image-taking lens group is 5.27mm, the aperture value Fno of the image-taking lens group is 1.97, and the maximum half field angle Semi-FOV of the image-taking lens group is 45.1 °.
Table 7 shows a basic parameter table of the image pickup lens group of embodiment 3, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 8 and 9 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 3. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 4.6298E-05 | 2.0159E-02 | -8.6701E-02 | 2.5538E-01 | -5.1418E-01 | 7.1996E-01 | -6.9927E-01 |
| S2 | -3.1290E-02 | -4.9581E-02 | 5.4132E-01 | -2.7004E+00 | 8.2069E+00 | -1.5054E+01 | 1.3867E+01 |
| S3 | -5.0608E-02 | 8.5043E-02 | -6.3462E-01 | 4.7444E+00 | -2.2697E+01 | 7.3489E+01 | -1.6683E+02 |
| S4 | -1.7825E-02 | 2.7892E-02 | 1.7282E-01 | -2.4698E+00 | 1.8198E+01 | -8.2405E+01 | 2.4718E+02 |
| S5 | -4.1732E-02 | -2.7957E-02 | 2.2189E-01 | -1.2853E+00 | 4.2817E+00 | -9.2143E+00 | 1.2870E+01 |
| S6 | -6.3451E-02 | 1.1547E-02 | 3.1374E-02 | -1.7084E-01 | 2.9182E-01 | -2.8097E-01 | 1.6102E-01 |
| S7 | -1.3801E-01 | 3.6084E-02 | 1.9737E-01 | -6.5502E-01 | 1.1444E+00 | -1.3141E+00 | 1.0362E+00 |
| S8 | -1.7140E-01 | 1.1477E-01 | -1.0197E-01 | 1.3555E-01 | -2.0003E-01 | 2.3160E-01 | -1.9065E-01 |
| S9 | -6.4191E-02 | 2.0755E-02 | -2.6702E-02 | 3.1569E-02 | -2.0757E-02 | 6.8741E-03 | -6.5453E-05 |
| S10 | 7.6863E-04 | -1.1485E-02 | 1.7054E-02 | -1.7852E-02 | 1.4503E-02 | -7.4363E-03 | 2.3731E-03 |
| S11 | -1.8421E-01 | 6.2856E-02 | -5.3427E-03 | -3.1807E-03 | 1.4653E-03 | -3.2665E-04 | 4.6737E-05 |
| S12 | -1.9460E-01 | 9.9116E-02 | -4.1286E-02 | 1.3506E-02 | -3.3709E-03 | 6.3185E-04 | -8.8455E-05 |
TABLE 8
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | 4.5983E-01 | -1.9469E-01 | 4.7742E-02 | -5.1442E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 3.2683E+00 | -2.7136E+01 | 3.7354E+01 | -2.7953E+01 | 1.2413E+01 | -3.0802E+00 | 3.3041E-01 |
| S3 | 2.7009E+02 | -3.1314E+02 | 2.5774E+02 | -1.4690E+02 | 5.5070E+01 | -1.2208E+01 | 1.2117E+00 |
| S4 | -5.1053E+02 | 7.3828E+02 | -7.4671E+02 | 5.1773E+02 | -2.3453E+02 | 6.2533E+01 | -7.4421E+00 |
| S5 | -1.0691E+01 | 2.8974E+00 | 4.1937E+00 | -5.6740E+00 | 3.2438E+00 | -9.5011E-01 | 1.1628E-01 |
| S6 | -5.1109E-02 | 6.9319E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -5.6219E-01 | 2.0649E-01 | -4.9261E-02 | 6.9258E-03 | -4.3783E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 1.1038E-01 | -4.4832E-02 | 1.2656E-02 | -2.4272E-03 | 3.0130E-04 | -2.1832E-05 | 7.0111E-07 |
| S9 | -1.0271E-03 | 4.9872E-04 | -1.2713E-04 | 1.9714E-05 | -1.8655E-06 | 9.9333E-08 | -2.2874E-09 |
| S10 | -4.8348E-04 | 6.3280E-05 | -5.1688E-06 | 2.4048E-07 | -4.8766E-09 | 0.0000E+00 | 0.0000E+00 |
| S11 | -4.5929E-06 | 3.1484E-07 | -1.4848E-08 | 4.6026E-10 | -8.4550E-12 | 6.9809E-14 | 0.0000E+00 |
| S12 | 9.2130E-06 | -7.0831E-07 | 3.9551E-08 | -1.5565E-09 | 4.0863E-11 | -6.4163E-13 | 4.5538E-15 |
TABLE 9
Fig. 6A shows a chromatic aberration curve on the axis of the image-taking lens group of embodiment 3, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 3. Fig. 6C shows a distortion curve of the image capturing lens group 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 group 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 image capturing lens assembly of embodiment 3 can achieve good image quality.
Example 4
An image capturing lens group 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 a photographing lens group according to embodiment 4 of the present application.
As shown in fig. 7, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a 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 convex object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image capturing lens group is 5.09mm, the total length TTL of the image capturing lens group is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 1.97, and the maximum half field angle Semi-FOV of the image capturing lens group is 44.8 °.
Table 10 shows a basic parameter table of the image pickup lens group of embodiment 4, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 11 and 12 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1 to S12 in example 4. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.9379E-03 | 2.8323E-03 | 1.4326E-02 | -1.0555E-01 | 3.1911E-01 | -5.5825E-01 | 6.1302E-01 |
| S2 | -3.3244E-02 | 8.0053E-03 | -5.2062E-03 | 4.0659E-01 | -3.3963E+00 | 1.4807E+01 | -4.0615E+01 |
| S3 | -4.5965E-02 | 2.6245E-02 | -1.1863E-02 | 5.8591E-01 | -4.6187E+00 | 1.9614E+01 | -5.3304E+01 |
| S4 | -2.0516E-02 | 1.3789E-01 | -1.3219E+00 | 9.5723E+00 | -4.5428E+01 | 1.4845E+02 | -3.4428E+02 |
| S5 | -2.6097E-02 | -2.6660E-01 | 2.3449E+00 | -1.3519E+01 | 5.2190E+01 | -1.4143E+02 | 2.7593E+02 |
| S6 | -6.7126E-02 | 1.6717E-02 | 2.5008E-02 | -1.6764E-01 | 2.9708E-01 | -2.9075E-01 | 1.6808E-01 |
| S7 | -1.4945E-01 | 8.2436E-02 | 3.5364E-02 | -2.7556E-01 | 5.4352E-01 | -6.5775E-01 | 5.3625E-01 |
| S8 | -1.6984E-01 | 1.1389E-01 | -9.7093E-02 | 1.1429E-01 | -1.5134E-01 | 1.6415E-01 | -1.2976E-01 |
| S9 | -6.0718E-02 | 1.3388E-02 | -1.0351E-02 | 1.0323E-02 | -2.7261E-03 | -3.5830E-03 | 4.1294E-03 |
| S10 | -8.7093E-04 | -9.3592E-03 | 1.6422E-02 | -1.8591E-02 | 1.5425E-02 | -7.9463E-03 | 2.5461E-03 |
| S11 | -1.8625E-01 | 6.5085E-02 | -7.0739E-03 | -2.3227E-03 | 1.1925E-03 | -2.6856E-04 | 3.8175E-05 |
| S12 | -1.9242E-01 | 9.6271E-02 | -3.9536E-02 | 1.2788E-02 | -3.1555E-03 | 5.8408E-04 | -8.0656E-05 |
TABLE 11
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -4.3024E-01 | 1.8766E-01 | -4.6423E-02 | 4.9799E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 7.4775E+01 | -9.4852E+01 | 8.3209E+01 | -4.9617E+01 | 1.9202E+01 | -4.3511E+00 | 4.3824E-01 |
| S3 | 9.8365E+01 | -1.2619E+02 | 1.1281E+02 | -6.9021E+01 | 2.7588E+01 | -6.4967E+00 | 6.8413E-01 |
| S4 | 5.7570E+02 | -6.9658E+02 | 6.0442E+02 | -3.6668E+02 | 1.4769E+02 | -3.5480E+01 | 3.8476E+00 |
| S5 | -3.9238E+02 | 4.0711E+02 | -3.0480E+02 | 1.6031E+02 | -5.6180E+01 | 1.1775E+01 | -1.1163E+00 |
| S6 | -5.3545E-02 | 7.2527E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -2.9635E-01 | 1.0938E-01 | -2.5961E-02 | 3.6121E-03 | -2.2587E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 7.3102E-02 | -2.9068E-02 | 8.0483E-03 | -1.5131E-03 | 1.8382E-04 | -1.3003E-05 | 4.0653E-07 |
| S9 | -2.1832E-03 | 7.1256E-04 | -1.5230E-04 | 2.1348E-05 | -1.8915E-06 | 9.6160E-08 | -2.1391E-09 |
| S10 | -5.2176E-04 | 6.8817E-05 | -5.6726E-06 | 2.6664E-07 | -5.4674E-09 | 0.0000E+00 | 0.0000E+00 |
| S11 | -3.7051E-06 | 2.5012E-07 | -1.1597E-08 | 3.5302E-10 | -6.3628E-12 | 5.1512E-14 | 0.0000E+00 |
| S12 | 8.2797E-06 | -6.2706E-07 | 3.4480E-08 | -1.3359E-09 | 3.4518E-11 | -5.3324E-13 | 3.7216E-15 |
TABLE 12
Fig. 8A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 4, which represents the deviation of the convergent focus 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 image pickup lens group of embodiment 4. Fig. 8C shows a distortion curve of the image capturing lens group 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 group of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens assembly according to embodiment 4 can achieve good imaging quality.
Example 5
A photographing lens group 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 a photographing lens group according to embodiment 5 of the present application.
As shown in fig. 9, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a 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 light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image capturing lens group is 5.13mm, the total length TTL of the image capturing lens group is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 1.97, and the maximum half field angle Semi-FOV of the image capturing lens group is 44.5 °.
Table 13 shows a basic parameter table of the image pickup lens group of embodiment 5 in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 14 and 15 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 5. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 13
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.8557E-03 | 3.2339E-03 | 7.1479E-03 | -6.4127E-02 | 1.9519E-01 | -3.3841E-01 | 3.6827E-01 |
| S2 | -2.9366E-02 | -5.9748E-02 | 5.9434E-01 | -2.7941E+00 | 7.7284E+00 | -1.1548E+01 | 3.1004E+00 |
| S3 | -4.8547E-02 | 8.3409E-02 | -6.9685E-01 | 5.4901E+00 | -2.7286E+01 | 9.0894E+01 | -2.1076E+02 |
| S4 | -1.7988E-02 | 5.3524E-02 | -1.3003E-01 | -2.6748E-01 | 6.9617E+00 | -4.1141E+01 | 1.3696E+02 |
| S5 | -3.6654E-02 | -1.1262E-01 | 9.4208E-01 | -5.1575E+00 | 1.8479E+01 | -4.6268E+01 | 8.3447E+01 |
| S6 | -6.7265E-02 | 1.7412E-02 | 2.9170E-02 | -1.8220E-01 | 3.1887E-01 | -3.0906E-01 | 1.7669E-01 |
| S7 | -1.5064E-01 | 9.6053E-02 | -1.5677E-02 | -1.5100E-01 | 3.3444E-01 | -4.1142E-01 | 3.3139E-01 |
| S8 | -1.7333E-01 | 1.2724E-01 | -1.3122E-01 | 1.7832E-01 | -2.4021E-01 | 2.5459E-01 | -1.9689E-01 |
| S9 | -6.1277E-02 | 1.2680E-02 | -6.8168E-03 | 5.7790E-03 | 3.8519E-04 | -4.8026E-03 | 4.3526E-03 |
| S10 | 1.2462E-03 | -1.5053E-02 | 2.3803E-02 | -2.4599E-02 | 1.8534E-02 | -8.9834E-03 | 2.7724E-03 |
| S11 | -1.9613E-01 | 6.8887E-02 | -5.5505E-03 | -4.1501E-03 | 1.9637E-03 | -4.6139E-04 | 7.0090E-05 |
| S12 | -1.9639E-01 | 9.9638E-02 | -4.1431E-02 | 1.3703E-02 | -3.4852E-03 | 6.6731E-04 | -9.5395E-05 |
TABLE 14
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -2.5701E-01 | 1.1180E-01 | -2.7649E-02 | 2.9697E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.3345E+01 | -5.1920E+01 | 5.8115E+01 | -3.9667E+01 | 1.6686E+01 | -3.9931E+00 | 4.1731E-01 |
| S3 | 3.4687E+02 | -4.0767E+02 | 3.3974E+02 | -1.9606E+02 | 7.4499E+01 | -1.6767E+01 | 1.6934E+00 |
| S4 | -2.9598E+02 | 4.3550E+02 | -4.4147E+02 | 3.0408E+02 | -1.3610E+02 | 3.5730E+01 | -4.1779E+00 |
| S5 | -1.0997E+02 | 1.0605E+02 | -7.4009E+01 | 3.6373E+01 | -1.1937E+01 | 2.3477E+00 | -2.0922E-01 |
| S6 | -5.5628E-02 | 7.4516E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.7726E-01 | 6.2200E-02 | -1.3845E-02 | 1.7948E-03 | -1.0496E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 1.0930E-01 | -4.3145E-02 | 1.1943E-02 | -2.2588E-03 | 2.7768E-04 | -1.9986E-05 | 6.3922E-07 |
| S9 | -2.1574E-03 | 6.8512E-04 | -1.4433E-04 | 2.0048E-05 | -1.7644E-06 | 8.9189E-08 | -1.9738E-09 |
| S10 | -5.5411E-04 | 7.1778E-05 | -5.8356E-06 | 2.7128E-07 | -5.5115E-09 | 0.0000E+00 | 0.0000E+00 |
| S11 | -7.3407E-06 | 5.3746E-07 | -2.7105E-08 | 8.9896E-10 | -1.7668E-11 | 1.5602E-13 | 0.0000E+00 |
| S12 | 1.0130E-05 | -7.9223E-07 | 4.4881E-08 | -1.7868E-09 | 4.7312E-11 | -7.4701E-13 | 5.3160E-15 |
Fig. 10A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 5, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 5. Fig. 10C shows a distortion curve of the image capturing lens group 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 group 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 10D, the imaging lens assembly according to embodiment 5 can achieve good imaging quality.
Example 6
A photographing lens group 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 a photographing lens group according to embodiment 6 of the present application.
As shown in fig. 11, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a 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 light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image capturing lens group is 5.13mm, the total length TTL of the image capturing lens group is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 1.99, and the maximum half field angle Semi-FOV of the image capturing lens group is 44.5 °.
Table 16 shows a basic parameter table of the image pickup lens group of embodiment 6, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 17 and 18 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 6. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 16
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.3136E-03 | 7.5212E-03 | -7.9968E-03 | -3.8276E-02 | 1.8841E-01 | -3.9318E-01 | 4.7840E-01 |
| S2 | -2.8907E-02 | -7.0905E-02 | 7.5967E-01 | -4.1250E+00 | 1.4244E+01 | -3.2485E+01 | 4.9239E+01 |
| S3 | -4.8026E-02 | 8.0144E-02 | -6.2982E-01 | 4.7869E+00 | -2.3262E+01 | 7.6345E+01 | -1.7518E+02 |
| S4 | -1.6976E-02 | 5.7136E-02 | -2.5697E-01 | 1.0645E+00 | -1.1700E+00 | -8.7204E+00 | 4.8002E+01 |
| S5 | -2.6545E-02 | -2.6126E-01 | 2.2170E+00 | -1.2374E+01 | 4.6435E+01 | -1.2286E+02 | 2.3508E+02 |
| S6 | -6.6924E-02 | 1.2397E-02 | 4.4225E-02 | -2.1427E-01 | 3.6522E-01 | -3.5169E-01 | 2.0073E-01 |
| S7 | -1.5205E-01 | 1.0312E-01 | -3.9214E-02 | -1.0520E-01 | 2.7664E-01 | -3.6320E-01 | 3.0526E-01 |
| S8 | -1.7142E-01 | 1.2083E-01 | -1.1179E-01 | 1.3695E-01 | -1.7839E-01 | 1.8885E-01 | -1.4663E-01 |
| S9 | -6.2144E-02 | 1.1743E-02 | -1.8118E-03 | -3.3247E-03 | 1.0226E-02 | -1.1746E-02 | 7.6980E-03 |
| S10 | 1.4816E-03 | -1.4332E-02 | 2.2868E-02 | -2.4308E-02 | 1.8695E-02 | -9.1698E-03 | 2.8543E-03 |
| S11 | -1.9166E-01 | 6.6632E-02 | -5.2699E-03 | -3.9804E-03 | 1.8628E-03 | -4.3348E-04 | 6.5192E-05 |
| S12 | -1.9166E-01 | 9.5763E-02 | -3.9324E-02 | 1.2895E-02 | -3.2651E-03 | 6.2441E-04 | -8.9372E-05 |
TABLE 17
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -3.6156E-01 | 1.6738E-01 | -4.3568E-02 | 4.8879E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -4.8054E+01 | 2.6357E+01 | -2.3593E+00 | -7.4809E+00 | 5.4588E+00 | -1.6832E+00 | 2.0495E-01 |
| S3 | 2.8605E+02 | -3.3413E+02 | 2.7709E+02 | -1.5928E+02 | 6.0345E+01 | -1.3554E+01 | 1.3676E+00 |
| S4 | -1.2344E+02 | 1.9672E+02 | -2.0699E+02 | 1.4448E+02 | -6.4512E+01 | 1.6705E+01 | -1.9093E+00 |
| S5 | -3.2929E+02 | 3.3791E+02 | -2.5114E+02 | 1.3155E+02 | -4.6036E+01 | 9.6579E+00 | -9.1813E-01 |
| S6 | -6.3160E-02 | 8.4467E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.6841E-01 | 6.0511E-02 | -1.3731E-02 | 1.8092E-03 | -1.0725E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 8.1506E-02 | -3.2061E-02 | 8.7944E-03 | -1.6392E-03 | 1.9753E-04 | -1.3864E-05 | 4.3006E-07 |
| S9 | -3.2851E-03 | 9.5350E-04 | -1.8924E-04 | 2.5217E-05 | -2.1545E-06 | 1.0657E-07 | -2.3210E-09 |
| S10 | -5.7488E-04 | 7.5034E-05 | -6.1471E-06 | 2.8796E-07 | -5.8949E-09 | 0.0000E+00 | 0.0000E+00 |
| S11 | -6.7551E-06 | 4.8902E-07 | -2.4372E-08 | 7.9843E-10 | -1.5496E-11 | 1.3508E-13 | 0.0000E+00 |
| S12 | 9.5199E-06 | -7.4802E-07 | 4.2631E-08 | -1.7094E-09 | 4.5634E-11 | -7.2705E-13 | 5.2246E-15 |
Watch 18
Fig. 12A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 6, which represents the deviation of the convergent focus 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 image pickup lens group of embodiment 6. Fig. 12C shows a distortion curve of the image capturing lens group 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 group of embodiment 6, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the imaging lens assembly according to embodiment 6 can achieve good imaging quality.
Example 7
A photographing lens group 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 image capturing lens group according to embodiment 7 of the present application.
As shown in fig. 13, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a 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 light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image capturing lens group is 5.15mm, the total length TTL of the image capturing lens group is 6.16mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 1.97, and the maximum half field angle Semi-FOV of the image capturing lens group is 44.4 °.
Table 19 shows a basic parameter table of the image pickup lens group of embodiment 7 in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 20 and 21 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 7. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
Watch 19
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.7179E-03 | 1.8036E-03 | 1.3809E-02 | -8.1151E-02 | 2.1863E-01 | -3.5054E-01 | 3.5778E-01 |
| S2 | -2.9126E-02 | -7.1311E-02 | 6.9700E-01 | -3.5128E+00 | 1.1180E+01 | -2.2936E+01 | 2.9452E+01 |
| S3 | -4.7573E-02 | 6.2861E-02 | -5.2606E-01 | 4.4678E+00 | -2.2713E+01 | 7.5659E+01 | -1.7329E+02 |
| S4 | -1.9899E-02 | 8.0595E-02 | -3.6689E-01 | 8.3899E-01 | 4.5217E+00 | -4.1829E+01 | 1.5742E+02 |
| S5 | -3.6674E-02 | -1.2163E-01 | 1.0498E+00 | -5.7320E+00 | 2.0224E+01 | -4.9208E+01 | 8.5039E+01 |
| S6 | -6.2942E-02 | 1.0490E-02 | 3.9879E-02 | -1.9973E-01 | 3.4199E-01 | -3.3048E-01 | 1.8891E-01 |
| S7 | -1.4137E-01 | 6.5811E-02 | 9.3871E-02 | -4.3031E-01 | 8.1220E-01 | -9.7031E-01 | 7.8540E-01 |
| S8 | -1.7450E-01 | 1.2821E-01 | -1.3057E-01 | 1.7236E-01 | -2.2817E-01 | 2.4181E-01 | -1.8852E-01 |
| S9 | -6.2859E-02 | 7.9031E-03 | 7.1812E-03 | -1.6347E-02 | 2.3400E-02 | -2.1366E-02 | 1.2810E-02 |
| S10 | 2.6955E-03 | -1.7225E-02 | 2.5188E-02 | -2.4594E-02 | 1.8027E-02 | -8.6532E-03 | 2.6573E-03 |
| S11 | -1.9757E-01 | 7.1707E-02 | -7.6197E-03 | -3.2847E-03 | 1.7268E-03 | -4.1641E-04 | 6.4016E-05 |
| S12 | -2.0221E-01 | 1.0648E-01 | -4.5704E-02 | 1.5411E-02 | -3.9570E-03 | 7.6040E-04 | -1.0871E-04 |
Watch 20
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -2.3544E-01 | 9.6795E-02 | -2.2645E-02 | 2.3008E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -1.9995E+01 | -1.0791E+00 | 1.5926E+01 | -1.5496E+01 | 7.5984E+00 | -1.9762E+00 | 2.1717E-01 |
| S3 | 2.7954E+02 | -3.2031E+02 | 2.5926E+02 | -1.4489E+02 | 5.3202E+01 | -1.1550E+01 | 1.1238E+00 |
| S4 | -3.5982E+02 | 5.4639E+02 | -5.6503E+02 | 3.9453E+02 | -1.7833E+02 | 4.7166E+01 | -5.5469E+00 |
| S5 | -1.0574E+02 | 9.4551E+01 | -5.9933E+01 | 2.6071E+01 | -7.3158E+00 | 1.1703E+00 | -7.8227E-02 |
| S6 | -5.9483E-02 | 7.9768E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -4.3398E-01 | 1.6160E-01 | -3.9017E-02 | 5.5537E-03 | -3.5603E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 1.0574E-01 | -4.2173E-02 | 1.1784E-02 | -2.2478E-03 | 2.7846E-04 | -2.0183E-05 | 6.4956E-07 |
| S9 | -5.2595E-03 | 1.5024E-03 | -2.9705E-04 | 3.9725E-05 | -3.4221E-06 | 1.7123E-07 | -3.7797E-09 |
| S10 | -5.2855E-04 | 6.8051E-05 | -5.4905E-06 | 2.5292E-07 | -5.0853E-09 | 0.0000E+00 | 0.0000E+00 |
| S11 | -6.7538E-06 | 4.9724E-07 | -2.5199E-08 | 8.3965E-10 | -1.6580E-11 | 1.4710E-13 | 0.0000E+00 |
| S12 | 1.1516E-05 | -8.9675E-07 | 5.0500E-08 | -1.9955E-09 | 5.2364E-11 | -8.1808E-13 | 5.7511E-15 |
TABLE 21
Fig. 14A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 7, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 7. Fig. 14C shows a distortion curve of the image capturing lens group 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 group of embodiment 7, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the imaging lens assembly according to embodiment 7 can achieve good imaging quality.
Example 8
A photographing lens group according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural view of a photographing lens group according to embodiment 8 of the present application.
As shown in fig. 15, the image capturing lens assembly, in order from an object side to an image side, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a 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 light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the image capturing lens group is 5.13mm, the total length TTL of the image capturing lens group is 6.02mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the image capturing lens group is 5.27mm, the aperture value Fno of the image capturing lens group is 1.99, and the maximum half field angle Semi-FOV of the image capturing lens group is 45.5 °.
Table 22 shows a basic parameter table of the image pickup lens group of embodiment 8, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 23 and 24 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of each aspherical mirror surface S1-S12 which can be used in example 8. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 22
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.4908E-02 | -1.7392E-01 | 1.3013E+00 | -6.1393E+00 | 1.9442E+01 | -4.2881E+01 | 6.7395E+01 |
| S2 | -6.8648E-02 | 4.7440E-01 | -3.9014E+00 | 2.0753E+01 | -7.4013E+01 | 1.8422E+02 | -3.2781E+02 |
| S3 | -1.6949E-02 | -4.5612E-01 | 4.1252E+00 | -2.1476E+01 | 7.5275E+01 | -1.8497E+02 | 3.2599E+02 |
| S4 | -2.7651E-02 | 1.8511E-01 | -1.1820E+00 | 6.8038E+00 | -2.9791E+01 | 9.9626E+01 | -2.5043E+02 |
| S5 | -3.6715E-02 | -1.5167E-01 | 1.4313E+00 | -8.2485E+00 | 3.1045E+01 | -8.0676E+01 | 1.4847E+02 |
| S6 | -5.3156E-02 | -4.8771E-02 | 5.9339E-01 | -3.4213E+00 | 1.2215E+01 | -2.9559E+01 | 5.0201E+01 |
| S7 | -1.0994E-01 | 1.5337E-02 | -1.2362E-02 | 2.3314E-01 | -8.2741E-01 | 1.5893E+00 | -1.9954E+00 |
| S8 | -1.0941E-01 | 3.2890E-02 | -7.8781E-02 | 2.6680E-01 | -5.1539E-01 | 6.3570E-01 | -5.3358E-01 |
| S9 | -5.3682E-03 | -2.8881E-02 | 2.3830E-02 | -1.5832E-02 | 9.9539E-03 | -5.6374E-03 | 2.6617E-03 |
| S10 | 3.4410E-02 | -3.2773E-02 | 3.8461E-02 | -3.6259E-02 | 2.4310E-02 | -1.0926E-02 | 3.2909E-03 |
| S11 | -1.8139E-01 | 8.5896E-02 | -2.9185E-02 | 8.3710E-03 | -2.0130E-03 | 4.0069E-04 | -6.4462E-05 |
| S12 | -2.1297E-01 | 1.2875E-01 | -6.4498E-02 | 2.4719E-02 | -7.0330E-03 | 1.4754E-03 | -2.2852E-04 |
TABLE 23
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -7.6374E+01 | 6.2488E+01 | -3.6536E+01 | 1.4873E+01 | -4.0011E+00 | 6.3883E-01 | -4.5806E-02 |
| S2 | 4.2187E+02 | -3.9288E+02 | 2.6184E+02 | -1.2157E+02 | 3.7295E+01 | -6.7866E+00 | 5.5409E-01 |
| S3 | -4.1689E+02 | 3.8740E+02 | -2.5894E+02 | 1.2133E+02 | -3.7838E+01 | 7.0583E+00 | -5.9622E-01 |
| S4 | 4.6473E+02 | -6.2675E+02 | 6.0306E+02 | -4.0200E+02 | 1.7604E+02 | -4.5490E+01 | 5.2521E+00 |
| S5 | -1.9570E+02 | 1.8467E+02 | -1.2319E+02 | 5.6422E+01 | -1.6780E+01 | 2.8965E+00 | -2.1811E-01 |
| S6 | -6.0871E+01 | 5.2936E+01 | -3.2745E+01 | 1.4057E+01 | -3.9786E+00 | 6.6738E-01 | -5.0228E-02 |
| S7 | 1.7439E+00 | -1.0850E+00 | 4.8141E-01 | -1.4959E-01 | 3.1041E-02 | -3.8695E-03 | 2.1915E-04 |
| S8 | 3.1346E-01 | -1.2981E-01 | 3.7619E-02 | -7.4532E-03 | 9.6087E-04 | -7.2600E-05 | 2.4387E-06 |
| S9 | -1.0112E-03 | 2.9116E-04 | -5.9501E-05 | 8.1815E-06 | -7.1374E-07 | 3.5581E-08 | -7.7136E-10 |
| S10 | -6.7410E-04 | 9.4710E-05 | -9.0781E-06 | 5.7875E-07 | -2.3169E-08 | 5.1518E-10 | -4.6339E-12 |
| S11 | 8.0966E-06 | -7.6730E-07 | 5.3133E-08 | -2.5892E-09 | 8.3798E-11 | -1.6137E-12 | 1.3974E-14 |
| S12 | 2.6135E-05 | -2.1940E-06 | 1.3316E-07 | -5.6729E-09 | 1.6062E-10 | -2.7102E-12 | 2.0597E-14 |
Watch 24
Fig. 16A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 8, which represents the deviation of the convergent focus 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 image pickup lens group of embodiment 8. Fig. 16C shows a distortion curve of the image capturing lens group 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 group of embodiment 8, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the image capturing lens assembly according to embodiment 8 can achieve good image quality.
In summary, examples 1 to 8 satisfy the relationships shown in table 25, respectively.
TABLE 25
The present application also provides an image pickup apparatus, the electronic photosensitive element of which may be a photosensitive coupled element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand-alone camera device such as a digital camera, or may be a camera module integrated on a mobile electronic device such as a mobile phone. The image pickup device is equipped with the image pickup lens group described above.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (23)
1. The image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises:
the first lens with positive focal power has a convex object-side surface and a concave image-side surface;
the second lens with negative focal power, 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 image side surface of the third lens is a convex surface;
a fourth lens having a negative refractive power, an image-side surface of which is concave;
the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface;
a sixth lens having a negative refractive power, an image-side surface of which is concave; and
the maximum half field angle Semi-FOV of the shooting lens group and the total effective focal length f of the shooting lens group meet the following conditions: 4.50<tan2(Semi-FOV)×f<6.00。
2. The imaging lens group of claim 1, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the imaging lens group on the optical axis and a half of a diagonal length of an effective pixel area on the imaging surface of the imaging lens group satisfy: TTL/ImgH < 1.20.
3. The imaging lens group of claim 1, wherein ImgH, which is half the diagonal length of the effective pixel area on the imaging surface of the imaging lens group, satisfies: 5.00mm < ImgH.
4. The imaging lens group of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: 4.00< f3/f1< 11.00.
5. The imaging lens group of claim 1, wherein a combined focal length f23 of the second and third lenses and a distance BFL on the optical axis from an image side surface of the sixth lens to an imaging surface of the imaging lens group satisfy: -57.00< f23/BFL < -24.00.
6. The imaging lens group of claim 1, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 1.00< R3/R4< 3.00.
7. The imaging lens group of claim 1, wherein the radius of curvature R6 of the image side surface of the third lens and the effective focal length f6 of the sixth lens satisfy: 4.00< R6/f6< 8.50.
8. The imaging lens group of claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis satisfy: 2.00< (T56+ CT6)/(T56-CT6) < 8.00.
9. The imaging lens group of claim 1, wherein the edge thickness ET2 of the second lens and the edge thickness ET5 of the fifth lens satisfy: 4.00< (ET2+ ET5)/(ET2-ET5) < 20.00.
10. The image capturing lens group according to claim 1, wherein a distance SAG41 on the optical axis from an intersection point of an object side surface of the fourth lens and the optical axis to an effective radius vertex of an object side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of an image side surface of the fourth lens and the optical axis to an effective radius vertex of an image side surface of the fourth lens satisfies: 6.00< (SAG41+ SAG42)/(SAG41-SAG42) < 9.50.
11. The imaging lens group according to any one of claims 1 to 10, wherein a maximum effective radius DT51 of an object side surface of the fifth lens and a maximum effective radius DT52 of an image side surface of the fifth lens satisfy: 16.00< (DT51+ DT52)/(DT51-DT52) < 23.00.
12. The image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises:
the first lens with positive focal power has a convex object-side surface and a concave image-side surface;
the second lens with negative focal power, 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 image side surface of the third lens is a convex surface;
a fourth lens having a negative refractive power, an image-side surface of which is concave;
the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface;
a sixth lens having a negative refractive power, an image-side surface of which is concave; and
the distance TTL from the object side surface of the first lens to the imaging surface of the shooting lens group on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the shooting lens group meet the following conditions: TTL/ImgH < 1.20.
13. The imaging lens group of claim 12, wherein ImgH, which is half the diagonal length of the effective pixel area on the imaging surface of the imaging lens group, satisfies: 5.00mm < ImgH.
14. The imaging lens group according to claim 13, wherein the maximum half field angle Semi-FOV of the imaging lens group and the total effective focal length f of the imaging lens group satisfy: 4.50<tan2(Semi-FOV)×f<6.00。
15. The imaging lens group of claim 12, wherein the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: 4.00< f3/f1< 11.00.
16. The imaging lens group of claim 12, wherein a combined focal length f23 of the second and third lenses and a distance BFL on the optical axis from an image side surface of the sixth lens to an imaging surface of the imaging lens group satisfy: -57.00< f23/BFL < -24.00.
17. The imaging lens group of claim 12, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 1.00< R3/R4< 3.00.
18. The imaging lens group of claim 12, wherein the radius of curvature R6 of the image side surface of the third lens and the effective focal length f6 of the sixth lens satisfy: 4.00< R6/f6< 8.50.
19. The imaging lens group of claim 12, wherein a center thickness CT6 of the sixth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis satisfy: 2.00< (T56+ CT6)/(T56-CT6) < 8.00.
20. The imaging lens group of claim 12, wherein the edge thickness ET2 of the second lens and the edge thickness ET5 of the fifth lens satisfy: 4.00< (ET2+ ET5)/(ET2-ET5) < 20.00.
21. The imaging lens group of claim 20, wherein the maximum effective radius DT51 of the object side surface of the fifth lens and the maximum effective radius DT52 of the image side surface of the fifth lens satisfy: 16.00< (DT51+ DT52)/(DT51-DT52) < 23.00.
22. The image capturing lens group according to any one of claims 12 to 21, wherein a distance SAG41 on the optical axis from an intersection point of an object side surface of the fourth lens and the optical axis to an effective radius vertex of the object side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of an image side surface of the fourth lens and the optical axis to an effective radius vertex of an image side surface of the fourth lens satisfies: 6.00< (SAG41+ SAG42)/(SAG41-SAG42) < 9.50.
23. An electronic apparatus, comprising the imaging lens group according to claim 1 or 12 and an imaging element for converting an optical pattern formed by the imaging lens group into an electric signal.
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