CN116859552B - Photographic lens - Google Patents

Photographic lens

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Publication number
CN116859552B
CN116859552B CN202310741781.9A CN202310741781A CN116859552B CN 116859552 B CN116859552 B CN 116859552B CN 202310741781 A CN202310741781 A CN 202310741781A CN 116859552 B CN116859552 B CN 116859552B
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CN
China
Prior art keywords
lens
photographic
focal length
optical axis
image
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Application number
CN202310741781.9A
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Chinese (zh)
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CN116859552A (en
Inventor
翁宇翔
徐武超
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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Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to CN202310741781.9A priority Critical patent/CN116859552B/en
Publication of CN116859552A publication Critical patent/CN116859552A/en
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Publication of CN116859552B publication Critical patent/CN116859552B/en
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The application discloses a photographic lens, which sequentially comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power and a fifth lens with focal power from an object side to an image side of the photographic lens along an optical axis, wherein the distance BFL from the image side of the fifth lens to an imaging surface of the photographic lens on the optical axis, the distance TD from the object side of the first lens to the image side of the fifth lens on the optical axis, and the effective focal length fa of the lens with the minimum chromatic dispersion coefficient in the first lens to the fifth lens and the effective focal length f of the photographic lens meet 0.9< BFL/TD <1.1 and 1< fa/f <4.

Description

Photographic lens
Technical Field
The application relates to the field of optical elements, in particular to a photographic lens.
Background
The smart phone, especially the current smart phone flagship machine, is very concerned about the high-power zooming function in the image, so that the periscope type long-focus lens is necessarily introduced, and the length direction of the periscope type long-focus lens is arranged along the vertical or transverse direction of the electronic equipment, thereby achieving the purpose of reducing the thickness of the body of the electronic equipment. The periscope type tele lens in the current market is limited in main application scene only to shooting with infinite distance, the application scene and the application times of the shooting function are very limited, meanwhile, the requirements of users for macro shooting are increased day by day, and based on the two considerations, the concept of the tele macro lens is introduced in the field.
Therefore, in order to meet market demands, how to achieve the performances of infinite distance and micro distance and realize the diversity of periscope lens functions becomes one of the current research directions.
Disclosure of Invention
The application provides a photographic lens, which sequentially comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power and a fifth lens with focal power from an object side to an image side along an optical axis, wherein the distance BFL from the image side of the fifth lens to an imaging surface of the photographic lens, the distance TD from the object side of the first lens to the image side of the fifth lens on the optical axis, and the effective focal length fa of the lens with the minimum chromatic dispersion coefficient in the first lens to the fifth lens satisfy 0.9< BFL/TD <1.1 and 1< fa/f <4.
In one embodiment, the on-axis distance TD from the object side of the first lens to the image side of the fifth lens and half Imgh of the diagonal length of the effective pixel area on the imaging plane of the photographic lens satisfy 1.6< TD/Imgh <1.9.
In one embodiment, the radius of curvature of the image side of the second lens is positive, and the radius of curvature of the image side of the fifth lens is positive.
In one embodiment, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET3 of the third lens satisfy 3< CT1/ET3<8.
In one embodiment, the combined focal length f34 of the third lens and the fourth lens, the effective focal length f3 of the third lens, and the refractive index N3 of the third lens satisfy 2< f34/f3×N3<6.2.
In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f4 of the fourth lens satisfy 0< (f 1-f 2)/f 4<1.
In one embodiment, the radius of curvature R4 of the image side of the second lens and the radius of curvature R10 of the image side of the fifth lens satisfy 0< R4/R10<0.6.
In one embodiment, the center thickness CT1 of the first lens on the optical axis and the effective focal length f of the photographing lens satisfy (CT1+CT2+CT3+CT4+CT5)/f <0.3.
In one embodiment, the maximum half field angle of the photographing lens, the radius of curvature R9 of the object side of the fifth lens, and the radius of curvature R10 of the image side of the fifth lens satisfy [ TAN (Semi-FOV) × (R9+R10)/(R9-R10) | <3.5 ].
In one embodiment, the air space T34 on the optical axis of the third lens and the fourth lens, and the air space T12 on the optical axis of the first lens and the second lens satisfy 11< T34/T12<20.
In one embodiment, the combined focal length f123 of the first lens, the second lens and the third lens, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length f of the photographing lens satisfy 3< f123/f+f45/f <5.
In one embodiment, the first lens ' Abbe number V1, the second lens ' Abbe number V2, the third lens ' Abbe number V3, the fourth lens ' Abbe number V4 and the fifth lens ' Abbe number V5 satisfy 3< (V1+V3+V5)/(V2+V4) <4.
In one embodiment, the center thickness CT1 of the first lens on the optical axis and the center thickness CT5 of the fifth lens on the optical axis satisfy 0.3< CT5/CT1<0.5.
In one embodiment, the radius of curvature Rx of the object side surface and the radius of curvature Ry of the image side surface of the lens with the smallest center thickness on the optical axis of the first lens element to the fifth lens element satisfy 2< Rx/Ry <2.7.
In one embodiment, the sum of center thicknesses ΣCT of the first lens element to the fifth lens element on the optical axis and the distance TD between the object side surface of the first lens element and the image side surface of the fifth lens element on the optical axis satisfy 0.5< ΣCT/TD <0.65.
In one embodiment, an on-axis distance SAG11 between an intersection of the object side surface of the first lens and the optical axis and an effective radius vertex of the object side surface of the first lens and a radius of curvature R1 of the object side surface of the first lens satisfy 0.2< |SAG11/R1| <0.3.
In one embodiment, the refractive index Nmax of the lens having the largest refractive index among the first to fifth lenses, the radius Ra of curvature of the object side surface of the lens having the largest refractive index, and the radius Rb of curvature of the image side surface satisfy 1.7< Nmax×Ra/Rb≤2.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy 0.4< f2/f3<0.7.
The photographic lens disclosed by the application has the advantages that the ratio of the distance from the image side surface of the fifth lens to the imaging surface on the optical axis to the distance from the object side surface of the first lens to the image side surface of the fifth lens on the axis is controlled by matching the reasonable number of lenses and the optical power, and meanwhile, the effective focal length of the lens with the minimum dispersion coefficient is reasonably set, so that the miniaturization of the lens can be realized, the space is reserved for the stroke of a motor of a module, the space utilization rate of the whole machine is improved, the whole machine is attractive, the dispersion is reduced, and the imaging quality is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 shows a schematic configuration diagram of a photographic lens according to embodiment 1 of the present application;
Fig. 2A to 2C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 1, respectively;
Fig. 3 is a schematic view showing the structure of a photographing lens according to embodiment 2 of the present application;
fig. 4A to 4C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 2, respectively;
fig. 5 shows a schematic configuration diagram of a photographic lens according to embodiment 3 of the present application;
fig. 6A to 6C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 3, respectively;
fig. 7 shows a schematic configuration diagram of a photographic lens according to embodiment 4 of the present application;
Fig. 8A to 8C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 4, respectively;
fig. 9 shows a schematic configuration diagram of a photographic lens according to embodiment 5 of the present application;
Fig. 10A to 10C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 5, respectively;
fig. 11 is a schematic diagram showing the structure of a photographic lens according to embodiment 6 of the present application;
Fig. 12A to 12C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 6, respectively;
fig. 13 is a schematic view showing the structure of a photographic lens according to embodiment 7 of the present application;
fig. 14A to 14C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 7, respectively;
Fig. 15 shows a schematic configuration diagram of a photographic lens according to embodiment 8 of the present application;
Fig. 16A to 16C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 8, respectively;
fig. 17 shows a schematic configuration of a photographic lens according to embodiment 9 of the application, and
Fig. 18A to 18C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the photographic lens of embodiment 9, respectively.
Detailed Description
For a better understanding of the application, various aspects of the 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 application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region, and if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The photographing lens according to an exemplary embodiment of the present application may include five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses in the first lens to the fifth lens can have a spacing distance.
In an exemplary embodiment, the first lens may have positive optical power, the second lens may have negative optical power, the third lens may have negative optical power, the fourth lens may have positive optical power, and the fifth lens may have either positive or negative optical power. Through the reasonable lens number, the surface type and the focal power of the lens, the optical total length of the photographic lens can be effectively reduced, and the system is ensured to have higher imaging quality.
In an exemplary embodiment, the photographing lens according to an exemplary embodiment of the present application further includes a diaphragm disposed at an object side surface of the first lens.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0.9< BFL/TD <1.1 and 1< fa/f <4, where BFL is an on-optical distance from an image side surface of the fifth lens to an imaging surface of the photographing lens, TD is an on-optical distance from an object side surface of the first lens to an image side surface of the fifth lens, fa is an effective focal length of a lens having a minimum dispersion coefficient among the first lens to the fifth lens, and f is an effective focal length of the photographing lens. By controlling the ratio of the distance from the image side surface of the fifth lens to the imaging surface on the optical axis to the distance from the object side surface of the first lens to the image side surface of the fifth lens, miniaturization of the lens can be achieved, space is reserved for the stroke of the module motor, the utilization rate of the whole machine space is improved, and the whole machine is attractive. Meanwhile, the effective focal length of the lens with the minimum dispersion coefficient is reasonably set, so that the dispersion can be reduced, and the imaging quality can be improved.
In an exemplary embodiment, the fourth lens of the first to fifth lenses has a minimum dispersion coefficient.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 1.6< TD/Imgh <1.9, where TD is an on-axis distance from an object side surface of the first lens to an image side surface of the fifth lens, and Imgh is a half of a diagonal length of an effective pixel region on an imaging surface of the photographing lens. Satisfies 1.6< TD/Imgh <1.9, and can realize miniaturization of the lens, improve the space utilization rate of the whole machine and ensure attractive appearance of the whole machine by controlling the ratio of the on-axis distance from the object side surface of the first lens to the image side surface of the fifth lens to the image surface of the lens.
In an exemplary embodiment, the radius of curvature of the image side of the second lens is positive and the radius of curvature of the image side of the fifth lens is positive.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 3< ct1/ET3<8, where CT1 is a center thickness of the first lens on the optical axis and ET3 is an edge thickness of the third lens. Satisfying 3< CT1/ET3<8, through controlling the center thickness of first lens and the edge thickness of third lens, can guarantee the workability of lens, reduction in production cost.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 2< f 34/f3XN3 <6.2, where f34 is a combined focal length of the third lens and the fourth lens, f3 is an effective focal length of the third lens, and N3 is a refractive index of the third lens. Satisfying 2< f 34/f3XN3 <6.2, by controlling the effective focal length of the third lens and the refractive index of the third lens, reasonable distribution of the optical power of the lens can be ensured and aberration can be reduced.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0< (f 1-f 2)/f 4<1, where f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, and f4 is an effective focal length of the fourth lens. The optical power distribution system meets 0< (f 1-f 2)/f 4<1, and is favorable for reasonably distributing the optical power of the first lens, the second lens and the fourth lens in space by controlling the effective focal lengths of the first lens, the second lens and the fourth lens, so that the aberration of the lens is reduced.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0< R4/R10<0.6, where R4 is a radius of curvature of an image side of the second lens and R10 is a radius of curvature of an image side of the fifth lens. Satisfying 0< R4/R10<0.6, and by controlling the curvature radius of the image side surface of the second lens and the curvature radius of the image side surface of the fifth lens, the shapes of the second lens and the fifth lens can be controlled advantageously, and the processability requirement can be satisfied.
In an exemplary embodiment, the photographing lens according to the present application may satisfy (CT1+CT2+CT3+CT4+CT5)/f <0.3, wherein CT1 is a center thickness of the first lens on the optical axis, CT2 is a center thickness of the second lens on the optical axis, CT3 is a center thickness of the third lens on the optical axis, CT4 is a center thickness of the fourth lens on the optical axis, CT5 is a center thickness of the fifth lens on the optical axis, and f is an effective focal length of the photographing lens. Satisfying (ct1+ct2+ct3+ct4+ct5)/f <0.3, the magnification of the lens and the workability of the lens can be ensured by controlling the center thicknesses of the first lens to the fifth lens and the effective focal length of the lens, and the production cost is reduced.
In an exemplary embodiment, the photographing lens according to the present application may satisfy [ TAN (Semi-FOV) × (r9+r10)/(R9-R10) [ 3.5 ], wherein Semi-FOV is a maximum half field angle of the photographing lens, R9 is a radius of curvature of an object side surface of the fifth lens, and R10 is a radius of curvature of an image side surface of the fifth lens. Satisfies |tan (Semi-FOV) × (r9+r10)/(R9-R10) | <3.5, and by controlling the angle of view of the lens, the radius of curvature of the object side surface of the fifth lens and the radius of curvature of the image side surface of the fifth lens, the magnification of the lens and the shape of the fifth lens can be controlled, and the workability requirement can be satisfied.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 11< T34/T12<20, where T34 is an air space of the third lens and the fourth lens on the optical axis, and T12 is an air space of the first lens and the second lens on the optical axis. Satisfying 11< T34/T12<20, through controlling the air interval of third lens and fourth lens on the optical axis, the air interval of first lens and second lens on the optical axis, can guarantee photographic lens's workability, reduction in production cost.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 3< f123/f+f45/f <5, where f123 is a combined focal length of the first lens, the second lens, and the third lens, f45 is a combined focal length of the fourth lens and the fifth lens, and f is an effective focal length of the photographing lens. Satisfying 3< f123/f+f45/f <5, the combined focal length of the first lens, the second lens and the third lens, the combined focal length of the fourth lens and the fifth lens and the effective focal length of the photographing lens can be beneficial to the reasonable distribution of the focal power of the first lens to the fifth lens in space, thereby reducing the aberration of the lens.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 3< (v1+v3+v5)/(v2+v4) <4, where V1 is an abbe number of the first lens, V2 is an abbe number of the second lens, V3 is an abbe number of the third lens, V4 is an abbe number of the fourth lens, and V5 is an abbe number of the fifth lens. By controlling the abbe coefficients of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens, aberrations of the lens can be reduced.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0.3< ct5/CT1<0.5, where CT1 is a center thickness of the first lens on the optical axis and CT5 is a center thickness of the fifth lens on the optical axis. Satisfying 0.3< CT5/CT1<0.5, through controlling the center thickness of first lens and fifth lens, can guarantee the machinability of camera lens, reduction in production cost.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 2< Rx/Ry <2.7, where Rx is a radius of curvature of an object side of a lens having a smallest center thickness on an optical axis among the first to fifth lenses, and Ry is a radius of curvature of an image side of a lens having a smallest center thickness on an optical axis among the first to fifth lenses. By controlling the radii of curvature of the object side and image side of the lens with the smallest center thickness on the optical axis, it is advantageous to meet the processability requirements of the thinnest lens.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0.5< Σct/TD <0.65, where Σct is the sum of the center thicknesses of the first lens element to the fifth lens element on the optical axis, and TD is the distance on the optical axis between the object side surface of the first lens element and the image side surface of the fifth lens element. By controlling the center thicknesses of all the lenses and the distances from the object side surface of the first lens to the image side surface of the fifth lens, lens miniaturization can be achieved.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0.2< |SAG11/R1| <0.3, wherein SAG11 is an on-axis distance between an intersection point of an object side surface of the first lens and an optical axis to an effective radius vertex of the object side surface of the first lens, and R1 is a radius of curvature of the object side surface of the first lens. Satisfies 0.2< |SAG11/R1| <0.3, is favorable for realizing the processability of the first lens and improves the yield.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 1.7< nmax×ra/Rb <2, where Nmax is a refractive index of a lens having a largest refractive index among the first to fifth lenses, ra is a radius of curvature of an object side surface of the lens having the largest refractive index, and Rb is a radius of curvature of an image side surface of the lens having the largest refractive index. Satisfying 1.7< Nmax×Ra/Rb≤2, and by controlling the relationship between the radius of curvature and refractive index, the appearance of the lens with the maximum refractive index can be made reasonable, thereby reducing the aberration of the lens.
In an exemplary embodiment, the photographing lens according to the present application may satisfy 0.4< f2/f3<0.7, where f2 is an effective focal length of the second lens and f3 is an effective focal length of the third lens. Satisfies 0.4< f2/f3<0.7, and is favorable for reasonable distribution of optical power in space by controlling the effective focal lengths of the second lens and the third lens, thereby reducing lens aberration.
In an exemplary embodiment, at least one of the mirrors of each of the first to fifth lenses is an aspherical mirror. The present application is not particularly limited to the specific number of spherical lenses and aspherical lenses, and aspherical lenses may be used for each lens if focus is placed on the image quality. The aspherical lens is characterized in that the curvature is continuously changed from the center of the lens to the periphery of the lens. Spherical lenses are characterized by a constant curvature from the center of the lens to the periphery. The aspheric lens has better curvature radius characteristic and has the advantages of improving distortion aberration and astigmatism aberration. By adopting the aspherical lens, aberration occurring during imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the first lens to the fifth lens are aspherical mirror surfaces.
In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of 5.0mm to 5.5mm, the effective focal length f2 of the second lens may be, for example, in the range of-8.0 mm and-7.0 mm, the effective focal length f3 of the third lens may be, for example, in the range of-16.0 mm to-12.0 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 23.0mm to 50.0mm, and the effective focal length f5 of the fifth lens may be, for example, in the range of-261.0 mm to 100.0 mm. The effective focal length f of the photographing lens may satisfy 14.0mm < f <15.0mm. The distance TTL from the object side surface of the first lens element to the imaging surface of the photographing lens on the optical axis may satisfy 13.0mm < TTL <14.0mm. Half Imgh of the diagonal length of the effective pixel area on the imaging plane of the photographic lens may be, for example, in the range of 3.0mm to 4.0mm. The maximum half field angle Semi-FOV of the photographing lens may be, for example, in the range of 14.0 ° to 15.0 °.
In an exemplary embodiment, the photographing lens according to the present application further includes a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging plane.
The photographing lens according to an exemplary embodiment of the present application has a tele characteristic. In application, the photographic lens according to the exemplary embodiment of the application can be designed by using a periscope lens, so that the length direction of the photographic lens is arranged along the vertical or transverse direction of the electronic equipment, thereby achieving the purpose of reducing the thickness of the body of the electronic equipment. The photographing lens according to the above embodiment of the present application may employ a plurality of lenses, for example, the above five lenses. Through reasonable setting of each lens of the photographic lens, the long-focus characteristic of the lens is realized, so that a good shooting effect can be realized.
However, it will be appreciated by those skilled in the art that the number of lenses making up the photographic lens can be varied to achieve the various results and advantages described in this specification without departing from the scope of the application as claimed. For example, although the description has been made by taking five lenses as an example in the embodiment, the photographic lens is not limited to include five lenses. The photographic lens may also include other numbers of lenses, if desired.
Specific examples of the photographic lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
A photographic lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2C. Fig. 1 shows a schematic configuration diagram of a photographic lens according to embodiment 1 of the present application.
As shown in fig. 1, the photographing 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, an optical filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 1 shows the basic parameter table of the photographic lens of embodiment 1, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspherical surfaces. The profile x of each aspherical lens can be defined using, but not limited to, the following aspherical formula:
Where x is the distance vector height of the aspherical surface at a position h in the optical axis direction from the apex of the aspherical surface, c is the paraxial curvature of the aspherical surface, c=1/R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in table 1 above), k is a conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. The following tables 2-1 and 2-2 show the higher order coefficients A4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirror faces S1-S10 in example 1.
Face number A4 A6 A8 A10 A12 A14 A16
S1 -7.0863E-04 4.3520E-05 -5.3090E-04 9.1319E-04 -1.0865E-03 9.1016E-04 -5.5009E-04
S2 6.3185E-03 -1.3011E-02 1.9413E-02 -1.4849E-02 2.8955E-03 5.3703E-03 -6.0895E-03
S3 7.7105E-03 -1.5036E-02 2.1138E-02 -8.4936E-03 -1.5597E-02 2.9547E-02 -2.5561E-02
S4 6.5150E-03 -5.2710E-03 8.6189E-03 3.3499E-03 -3.3375E-02 6.2699E-02 -6.8478E-02
S5 2.1159E-03 1.3724E-02 -5.7617E-02 2.4277E-01 -6.4765E-01 1.1464E+00 -1.4015E+00
S6 -1.1629E-03 2.0538E-02 -9.0740E-02 3.7654E-01 -1.0114E+00 1.8370E+00 -2.3281E+00
S7 1.7008E-02 -2.3842E-02 2.9938E-02 -9.0743E-02 2.5712E-01 -5.0031E-01 6.7035E-01
S8 1.5624E-02 -2.6698E-02 2.6600E-02 -2.5144E-02 3.6891E-02 -5.8681E-02 6.8668E-02
S9 -3.2827E-02 -1.3097E-02 4.0783E-02 -6.4876E-02 8.5061E-02 -8.7861E-02 6.8350E-02
S10 -3.6223E-02 8.0760E-03 2.9403E-03 -1.6412E-02 2.8154E-02 -2.9470E-02 2.0803E-02
TABLE 2-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 2.4072E-04 -7.5750E-05 1.6876E-05 -2.5869E-06 2.5890E-07 -1.5208E-08 3.9732E-10
S2 3.3780E-03 -1.1891E-03 2.8159E-04 -4.4962E-05 4.6613E-06 -2.8414E-07 7.7448E-09
S3 1.3902E-02 -5.1313E-03 1.3111E-03 -2.2941E-04 2.6310E-05 -1.7858E-06 5.4458E-08
S4 5.0118E-02 -2.5676E-02 9.2778E-03 -2.3229E-03 3.8395E-04 -3.7694E-05 1.6643E-06
S5 1.2095E+00 -7.4265E-01 3.2243E-01 -9.6699E-02 1.9047E-02 -2.2159E-03 1.1532E-04
S6 2.0950E+00 -1.3458E+00 6.1234E-01 -1.9251E-01 3.9715E-02 -4.8300E-03 2.6201E-04
S7 -6.3107E-01 4.2133E-01 -1.9885E-01 6.4978E-02 -1.4000E-02 1.7887E-03 -1.0253E-04
S8 -5.4889E-02 2.9961E-02 -1.1215E-02 2.8546E-03 -4.7653E-04 4.7468E-05 -2.1517E-06
S9 -3.9159E-02 1.6228E-02 -4.7620E-03 9.5910E-04 -1.2565E-04 9.6238E-06 -3.2660E-07
S10 -1.0254E-02 3.5636E-03 -8.6741E-04 1.4436E-04 -1.5616E-05 9.8740E-07 -2.7644E-08
TABLE 2-2
Fig. 2A shows an on-axis chromatic aberration curve of the photographing lens of embodiment 1, which represents a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the photographing lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the photographing lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 2A to 2C, the photographing lens of embodiment 1 can achieve good imaging quality.
Example 2
A photographic lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4C. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration diagram of a photographic lens according to embodiment 2 of the present application.
As shown in fig. 3, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 3 shows the basic parameter table of the photographic lens of embodiment 2, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm). Tables 4-1 and 4-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
TABLE 4-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 -5.4954E-05 1.7046E-05 -3.5462E-06 4.8985E-07 -4.3083E-08 2.1811E-09 -4.8277E-11
S2 -1.4395E-02 3.6170E-03 -6.5206E-04 8.2053E-05 -6.8262E-06 3.3631E-07 -7.3981E-09
S3 -5.4430E-03 -5.2654E-04 6.1009E-04 -1.7339E-04 2.6359E-05 -2.1743E-06 7.6817E-08
S4 -1.4388E-01 7.3287E-02 -2.7185E-02 7.0877E-03 -1.2263E-03 1.2614E-04 -5.8300E-06
S5 6.0013E-01 -3.4978E-01 1.4398E-01 -4.0910E-02 7.6313E-03 -8.4063E-04 4.1416E-05
S6 4.2763E+00 -2.7921E+00 1.2964E+00 -4.1762E-01 8.8660E-02 -1.1150E-02 6.2902E-04
S7 5.2501E-01 -3.1148E-01 1.3210E-01 -3.8864E-02 7.5126E-03 -8.5631E-04 4.3568E-05
S8 -4.2932E-02 8.4889E-03 6.6880E-04 -8.4574E-04 2.1396E-04 -2.5017E-05 1.1579E-06
S9 -2.3667E-01 9.6014E-02 -2.7679E-02 5.5443E-03 -7.3393E-04 5.7748E-05 -2.0460E-06
S10 -3.2891E-02 1.1495E-02 -2.8629E-03 4.9578E-04 -5.6717E-05 3.8530E-06 -1.1770E-07
TABLE 4-2
Fig. 4A shows an on-axis chromatic aberration curve of the photographing lens of embodiment 2, which represents a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the photographing lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the photographing lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 4A to 4C, the photographing lens of embodiment 2 can achieve good imaging quality.
Example 3
A photographic lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6C. Fig. 5 shows a schematic configuration diagram of a photographic lens according to embodiment 3 of the present application.
As shown in fig. 5, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 5 shows the basic parameter table of the photographic lens of embodiment 3, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm). Tables 6-1 and 6-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 5
Face number A4 A6 A8 A10 A12 A14 A16
S1 -7.0188E-04 -4.7124E-05 -5.7559E-04 1.2582E-03 -1.4599E-03 1.0655E-03 -5.2924E-04
S2 1.2053E-02 -4.3025E-02 1.1219E-01 -1.7739E-01 1.8366E-01 -1.3138E-01 6.7065E-02
S3 1.3600E-02 -4.6616E-02 1.2133E-01 -1.8918E-01 1.8776E-01 -1.2307E-01 5.3314E-02
S4 8.4520E-03 -1.2907E-02 3.2598E-02 -3.6266E-02 -1.3424E-02 9.8522E-02 -1.4902E-01
S5 1.1709E-02 6.5223E-03 -4.6185E-02 2.0143E-01 -5.3415E-01 9.3287E-01 -1.1230E+00
S6 8.8149E-03 3.1210E-02 -2.0010E-01 8.2501E-01 -2.1975E+00 3.9913E+00 -5.0970E+00
S7 3.7081E-04 1.6291E-02 -1.1360E-01 3.5533E-01 -7.8905E-01 1.2935E+00 -1.5605E+00
S8 1.1028E-02 -2.6781E-02 5.1405E-02 -1.1106E-01 1.7584E-01 -1.7082E-01 9.2570E-02
S9 -1.4526E-02 -4.7600E-02 1.5319E-01 -3.5831E-01 5.9453E-01 -6.8161E-01 5.4784E-01
S10 -2.4999E-02 -3.4863E-03 2.7086E-02 -6.4179E-02 9.5859E-02 -9.6406E-02 6.7555E-02
TABLE 6-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 1.8559E-04 -4.6587E-05 8.3380E-06 -1.0401E-06 8.5991E-08 -4.2353E-09 9.4070E-11
S2 -2.4839E-02 6.6977E-03 -1.3024E-03 1.7795E-04 -1.6211E-05 8.8426E-07 -2.1847E-08
S3 -1.4366E-02 1.7627E-03 2.3571E-04 -1.4104E-04 2.6258E-05 -2.4073E-06 9.1204E-08
S4 1.2984E-01 -7.4496E-02 2.9138E-02 -7.7233E-03 1.3306E-03 -1.3465E-04 6.0780E-06
S5 9.5421E-01 -5.7718E-01 2.4716E-01 -7.3225E-02 1.4277E-02 -1.6480E-03 8.5316E-05
S6 4.6523E+00 -3.0484E+00 1.4221E+00 -4.6086E-01 9.8565E-02 -1.2506E-02 7.1283E-04
S7 1.3768E+00 -8.8175E-01 4.0404E-01 -1.2883E-01 2.7119E-02 -3.3858E-03 1.8988E-04
S8 -1.5637E-02 -1.4185E-02 1.1932E-02 -4.4238E-03 9.2744E-04 -1.0656E-04 5.2404E-06
S9 -3.1379E-01 1.2887E-01 -3.7671E-02 7.6479E-03 -1.0245E-03 8.1398E-05 -2.9046E-06
S10 -3.3637E-02 1.1976E-02 -3.0264E-03 5.2993E-04 -6.1108E-05 4.1726E-06 -1.2778E-07
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the photographic lens of embodiment 3, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the photographing lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the photographing lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 6A to 6C, the photographing lens of embodiment 3 can achieve good imaging quality.
Example 4
A photographic lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8C. Fig. 7 shows a schematic configuration diagram of a photographic lens according to embodiment 4 of the present application.
As shown in fig. 7, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 7 shows a basic parameter table of the photographic lens of embodiment 4, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm). Tables 8-1 and 8-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 7
Face number A4 A6 A8 A10 A12 A14 A16
S1 -7.0188E-04 -4.7124E-05 -5.7559E-04 1.2582E-03 -1.4599E-03 1.0655E-03 -5.2924E-04
S2 1.2053E-02 -4.3025E-02 1.1219E-01 -1.7739E-01 1.8366E-01 -1.3138E-01 6.7065E-02
S3 1.3600E-02 -4.6616E-02 1.2133E-01 -1.8918E-01 1.8776E-01 -1.2307E-01 5.3314E-02
S4 8.4520E-03 -1.2907E-02 3.2598E-02 -3.6266E-02 -1.3424E-02 9.8522E-02 -1.4902E-01
S5 1.1709E-02 6.5223E-03 -4.6185E-02 2.0143E-01 -5.3415E-01 9.3287E-01 -1.1230E+00
S6 8.8149E-03 3.1210E-02 -2.0010E-01 8.2501E-01 -2.1975E+00 3.9913E+00 -5.0970E+00
S7 3.7081E-04 1.6291E-02 -1.1360E-01 3.5533E-01 -7.8905E-01 1.2935E+00 -1.5605E+00
S8 1.1028E-02 -2.6781E-02 5.1405E-02 -1.1106E-01 1.7584E-01 -1.7082E-01 9.2570E-02
S9 -1.4526E-02 -4.7600E-02 1.5319E-01 -3.5831E-01 5.9453E-01 -6.8161E-01 5.4784E-01
S10 -2.4999E-02 -3.4863E-03 2.7086E-02 -6.4179E-02 9.5859E-02 -9.6406E-02 6.7555E-02
TABLE 8-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 1.8559E-04 -4.6587E-05 8.3380E-06 -1.0401E-06 8.5991E-08 -4.2353E-09 9.4070E-11
S2 -2.4839E-02 6.6977E-03 -1.3024E-03 1.7795E-04 -1.6211E-05 8.8426E-07 -2.1847E-08
S3 -1.4366E-02 1.7627E-03 2.3571E-04 -1.4104E-04 2.6258E-05 -2.4073E-06 9.1204E-08
S4 1.2984E-01 -7.4496E-02 2.9138E-02 -7.7233E-03 1.3306E-03 -1.3465E-04 6.0780E-06
S5 9.5421E-01 -5.7718E-01 2.4716E-01 -7.3225E-02 1.4277E-02 -1.6480E-03 8.5316E-05
S6 4.6523E+00 -3.0484E+00 1.4221E+00 -4.6086E-01 9.8565E-02 -1.2506E-02 7.1283E-04
S7 1.3768E+00 -8.8175E-01 4.0404E-01 -1.2883E-01 2.7119E-02 -3.3858E-03 1.8988E-04
S8 -1.5637E-02 -1.4185E-02 1.1932E-02 -4.4238E-03 9.2744E-04 -1.0656E-04 5.2404E-06
S9 -3.1379E-01 1.2887E-01 -3.7671E-02 7.6479E-03 -1.0245E-03 8.1398E-05 -2.9046E-06
S10 -3.3637E-02 1.1976E-02 -3.0264E-03 5.2993E-04 -6.1108E-05 4.1726E-06 -1.2778E-07
TABLE 8-2
Fig. 8A shows an on-axis chromatic aberration curve of the photographic lens of embodiment 4, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the photographing lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the photographing lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 8A to 8C, the photographing lens of embodiment 4 can achieve good imaging quality.
Example 5
A photographic lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10C. Fig. 9 shows a schematic configuration diagram of a photographic lens according to embodiment 5 of the present application.
As shown in fig. 9, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 9 shows a basic parameter table of the photographic lens of embodiment 5, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm). Tables 10-1 and 10-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 9
Face number A4 A6 A8 A10 A12 A14 A16
S1 -6.5841E-04 -2.3258E-04 -5.7951E-05 4.1095E-04 -5.7956E-04 4.5239E-04 -2.3351E-04
S2 1.1059E-02 -3.7818E-02 9.6432E-02 -1.4869E-01 1.4980E-01 -1.0410E-01 5.1535E-02
S3 1.2538E-02 -4.1356E-02 1.0562E-01 -1.6112E-01 1.5627E-01 -1.0005E-01 4.2317E-02
S4 8.2553E-03 -1.3343E-02 3.9546E-02 -6.7907E-02 6.7356E-02 -3.2453E-02 -5.8452E-03
S5 1.0697E-02 7.7686E-03 -4.8663E-02 2.0534E-01 -5.3326E-01 9.1681E-01 -1.0903E+00
S6 7.6832E-03 3.0550E-02 -1.8856E-01 7.7427E-01 -2.0584E+00 3.7351E+00 -4.7684E+00
S7 -7.8124E-04 2.1241E-02 -1.3152E-01 3.9366E-01 -8.2956E-01 1.2915E+00 -1.4907E+00
S8 7.7336E-03 -5.2163E-03 -3.1275E-02 7.9557E-02 -1.1231E-01 1.3097E-01 -1.3268E-01
S9 -1.7807E-02 -2.2655E-02 5.7372E-02 -1.3830E-01 2.6032E-01 -3.2605E-01 2.7470E-01
S10 -2.4651E-02 -2.9839E-03 2.4482E-02 -5.8760E-02 8.8585E-02 -8.9444E-02 6.2668E-02
TABLE 10-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 8.5185E-05 -2.2522E-05 4.3122E-06 -5.8389E-07 5.2986E-08 -2.8855E-09 7.1121E-11
S2 -1.8476E-02 4.8124E-03 -9.0150E-04 1.1827E-04 -1.0303E-05 5.3464E-07 -1.2488E-08
S3 -1.1117E-02 1.3165E-03 1.8319E-04 -1.0449E-04 1.8992E-05 -1.7049E-06 6.3330E-08
S4 2.0902E-02 -1.6035E-02 7.0724E-03 -1.9884E-03 3.5318E-04 -3.6282E-05 1.6474E-06
S5 9.1732E-01 -5.5028E-01 2.3394E-01 -6.8869E-02 1.3351E-02 -1.5332E-03 7.9002E-05
S6 4.3522E+00 -2.8518E+00 1.3303E+00 -4.3094E-01 9.2110E-02 -1.1676E-02 6.6475E-04
S7 1.2688E+00 -7.8938E-01 3.5338E-01 -1.1058E-01 2.2928E-02 -2.8282E-03 1.5711E-04
S8 1.0521E-01 -6.0437E-02 2.4255E-02 -6.5983E-03 1.1573E-03 -1.1796E-04 5.3054E-06
S9 -1.6032E-01 6.5822E-02 -1.8973E-02 3.7579E-03 -4.8666E-04 3.7072E-05 -1.2584E-06
S10 -3.1118E-02 1.1033E-02 -2.7749E-03 4.8359E-04 -5.5519E-05 3.7767E-06 -1.1531E-07
TABLE 10-2
Fig. 10A shows an on-axis chromatic aberration curve of the photographic lens of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the photographing lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the photographing lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 10A to 10C, the photographing lens of embodiment 5 can achieve good imaging quality.
Example 6
A photographic lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12C. Fig. 11 shows a schematic configuration diagram of a photographic lens according to embodiment 6 of the present application.
As shown in fig. 11, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 11 shows the basic parameter table of the photographic lens of example 6, in which the units of the radius of curvature, the thickness, and the effective focal length are all millimeters (mm). Tables 12-1 and 12-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 11
Face number A4 A6 A8 A10 A12 A14 A16
S1 -6.2078E-04 -4.3809E-04 5.3984E-04 -5.9219E-04 5.0030E-04 -3.3791E-04 1.7282E-04
S2 1.0611E-02 -3.4909E-02 8.8910E-02 -1.3683E-01 1.3711E-01 -9.4424E-02 4.6170E-02
S3 1.2165E-02 -3.8896E-02 9.9917E-02 -1.5387E-01 1.5106E-01 -9.8632E-02 4.3333E-02
S4 8.5403E-03 -1.6184E-02 5.8554E-02 -1.3789E-01 2.2766E-01 -2.7720E-01 2.5321E-01
S5 1.0806E-02 7.9789E-03 -5.2613E-02 2.2490E-01 -5.8827E-01 1.0182E+00 -1.2197E+00
S6 7.9038E-03 2.8723E-02 -1.7922E-01 7.4104E-01 -1.9757E+00 3.5882E+00 -4.5800E+00
S7 -5.3529E-04 1.8539E-02 -1.1831E-01 3.4678E-01 -7.1286E-01 1.0849E+00 -1.2271E+00
S8 8.8560E-03 -8.4353E-03 -2.6267E-02 7.7222E-02 -1.2043E-01 1.5188E-01 -1.5796E-01
S9 -1.7498E-02 -2.4922E-02 5.9923E-02 -1.3470E-01 2.4197E-01 -2.9260E-01 2.3812E-01
S10 -2.5410E-02 -2.9181E-03 2.4932E-02 -5.9429E-02 8.8915E-02 -8.9155E-02 6.2075E-02
TABLE 12-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 -6.4053E-05 1.6795E-05 -3.0537E-06 3.7335E-07 -2.8989E-08 1.2726E-09 -2.3483E-11
S2 -1.6293E-02 4.1620E-03 -7.6143E-04 9.7059E-05 -8.1620E-06 4.0536E-07 -8.9549E-09
S3 -1.2449E-02 2.0529E-03 -6.5420E-05 -5.0183E-05 1.1469E-05 -1.1021E-06 4.1994E-08
S4 -1.7322E-01 8.7680E-02 -3.2175E-02 8.2864E-03 -1.4163E-03 1.4403E-04 -6.5885E-06
S5 1.0345E+00 -6.2611E-01 2.6870E-01 -7.9881E-02 1.5642E-02 -1.8147E-03 9.4471E-05
S6 4.1758E+00 -2.7312E+00 1.2707E+00 -4.1029E-01 8.7343E-02 -1.1019E-02 6.2389E-04
S7 1.0250E+00 -6.2610E-01 2.7520E-01 -8.4551E-02 1.7212E-02 -2.0855E-03 1.1390E-04
S8 1.2404E-01 -6.9595E-02 2.7168E-02 -7.1801E-03 1.2225E-03 -1.2084E-04 5.2620E-06
S9 -1.3374E-01 5.2545E-02 -1.4390E-02 2.6834E-03 -3.2330E-04 2.2545E-05 -6.8498E-07
S10 -3.0653E-02 1.0816E-02 -2.7094E-03 4.7068E-04 -5.3916E-05 3.6628E-06 -1.1180E-07
Table 12-2 fig. 12A shows an on-axis chromatic aberration curve of the photographic lens of example 6, which indicates the convergence focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the photographing lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the photographing lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 12A to 12C, the photographing lens of embodiment 6 can achieve good imaging quality.
Example 7
A photographic lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 shows a schematic configuration diagram of a photographic lens according to embodiment 7 of the present application.
As shown in fig. 13, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 13 shows a basic parameter table of a photographic lens of embodiment 7, in which the units of radius of curvature, thickness, and effective focal length are all millimeters (mm). Tables 14-1 and 14-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 13
Face number A4 A6 A8 A10 A12 A14 A16
S1 -6.6577E-04 -1.8121E-04 -5.4133E-05 2.9677E-04 -3.7773E-04 2.5315E-04 -1.0487E-04
S2 8.5970E-03 -2.6053E-02 7.0266E-02 -1.1264E-01 1.1579E-01 -8.0979E-02 3.9903E-02
S3 1.0249E-02 -2.9251E-02 7.8598E-02 -1.2437E-01 1.2257E-01 -7.8127E-02 3.1879E-02
S4 8.0051E-03 -1.1243E-02 3.7168E-02 -7.5001E-02 9.9276E-02 -9.2434E-02 6.3576E-02
S5 1.0225E-02 6.3054E-03 -3.8907E-02 1.7117E-01 -4.5348E-01 7.8686E-01 -9.3937E-01
S6 7.5065E-03 2.4201E-02 -1.4885E-01 6.2308E-01 -1.6763E+00 3.0642E+00 -3.9294E+00
S7 -1.2437E-03 2.4988E-02 -1.5120E-01 4.4408E-01 -9.1158E-01 1.3787E+00 -1.5489E+00
S8 6.8263E-03 1.2731E-02 -1.0868E-01 2.5669E-01 -3.7145E-01 3.8883E-01 -3.1095E-01
S9 -1.9925E-02 -1.0586E-03 -3.2945E-02 7.2155E-02 -5.9126E-02 1.0904E-02 2.0428E-02
S10 -2.6182E-02 -4.2105E-05 1.6386E-02 -4.3155E-02 6.8089E-02 -7.0424E-02 4.9979E-02
TABLE 14-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 2.8249E-05 -4.9716E-06 5.5211E-07 -3.5132E-08 9.7627E-10 0.0000E+00 0.0000E+00
S2 -1.4094E-02 3.5775E-03 -6.4508E-04 8.0222E-05 -6.4920E-06 3.0414E-07 -6.1386E-09
S3 -7.4125E-03 3.3063E-04 3.7832E-04 -1.3245E-04 2.1731E-05 -1.8689E-06 6.7831E-08
S4 -3.3450E-02 1.3691E-02 -4.3296E-03 1.0217E-03 -1.6808E-04 1.7032E-05 -7.9376E-07
S5 7.9118E-01 -4.7453E-01 2.0162E-01 -5.9327E-02 1.1500E-02 -1.3212E-03 6.8146E-05
S6 3.5955E+00 -2.3588E+00 1.1007E+00 -3.5648E-01 7.6135E-02 -9.6393E-03 5.4783E-04
S7 1.2887E+00 -7.8742E-01 3.4764E-01 -1.0764E-01 2.2132E-02 -2.7107E-03 1.4957E-04
S8 1.9067E-01 -8.8074E-02 2.9829E-02 -7.1310E-03 1.1332E-03 -1.0699E-04 4.5271E-06
S9 -2.1354E-02 1.0794E-02 -3.3653E-03 6.7132E-04 -8.2906E-05 5.6937E-06 -1.6173E-07
S10 -2.4994E-02 8.8976E-03 -2.2435E-03 3.9160E-04 -4.5005E-05 3.0634E-06 -9.3569E-08
TABLE 14-2
Fig. 14A shows an on-axis chromatic aberration curve of the photographic lens of embodiment 7, which represents a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the photographing lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the photographing lens of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 14A to 14C, the photographing lens of embodiment 7 can achieve good imaging quality.
Example 8
A photographic lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16C. Fig. 15 shows a schematic configuration diagram of a photographic lens according to embodiment 8 of the present application.
As shown in fig. 15, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 15 shows a basic parameter table of a photographic lens of embodiment 8, in which the units of radius of curvature, thickness, and effective focal length are all millimeters (mm). Tables 16-1 and 16-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 15
Face number A4 A6 A8 A10 A12 A14 A16
S1 -6.5711E-04 -1.6290E-04 -1.1352E-04 3.7879E-04 -4.4462E-04 2.8879E-04 -1.1766E-04
S2 1.1086E-02 -3.6790E-02 9.3971E-02 -1.4674E-01 1.5005E-01 -1.0571E-01 5.2939E-02
S3 1.2958E-02 -4.1119E-02 1.0603E-01 -1.6602E-01 1.6693E-01 -1.1217E-01 5.1002E-02
S4 8.6223E-03 -1.4279E-02 4.6869E-02 -9.6503E-02 1.3383E-01 -1.3331E-01 9.9500E-02
S5 1.0200E-02 5.1843E-03 -3.3944E-02 1.5673E-01 -4.2431E-01 7.4549E-01 -8.9753E-01
S6 7.3640E-03 2.3532E-02 -1.4754E-01 6.2299E-01 -1.6820E+00 3.0794E+00 -3.9509E+00
S7 -4.8417E-04 2.0575E-02 -1.3992E-01 4.3073E-01 -9.1275E-01 1.4073E+00 -1.5960E+00
S8 1.0849E-02 -1.5500E-02 -2.2552E-02 1.0090E-01 -1.8599E-01 2.3780E-01 -2.2675E-01
S9 -1.5249E-02 -3.5059E-02 7.1770E-02 -1.2255E-01 1.8529E-01 -2.0684E-01 1.6142E-01
S10 -2.5857E-02 -2.1970E-03 2.1214E-02 -4.9411E-02 7.3186E-02 -7.2969E-02 5.0575E-02
TABLE 16-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 3.1371E-05 -5.4813E-06 6.0544E-07 -3.8365E-08 1.0627E-09 0.0000E+00 0.0000E+00
S2 -1.9146E-02 5.0149E-03 -9.4162E-04 1.2338E-04 -1.0691E-05 5.4933E-07 -1.2633E-08
S3 -1.5332E-02 2.7466E-03 -1.5817E-04 -4.8051E-05 1.2814E-05 -1.3010E-06 5.1346E-08
S4 -5.6937E-02 2.5039E-02 -8.3137E-03 2.0072E-03 -3.3056E-04 3.3027E-05 -1.5041E-06
S5 7.6074E-01 -4.5858E-01 1.9567E-01 -5.7784E-02 1.1237E-02 -1.2947E-03 6.6960E-05
S6 3.6148E+00 -2.3703E+00 1.1052E+00 -3.5756E-01 7.6271E-02 -9.6428E-03 5.4715E-04
S7 1.3312E+00 -8.1166E-01 3.5653E-01 -1.0963E-01 2.2355E-02 -2.7131E-03 1.4825E-04
S8 1.5989E-01 -8.1842E-02 2.9807E-02 -7.4980E-03 1.2352E-03 -1.1967E-04 5.1620E-06
S9 -8.8340E-02 3.4110E-02 -9.2341E-03 1.7096E-03 -2.0521E-04 1.4294E-05 -4.3454E-07
S10 -2.4870E-02 8.7406E-03 -2.1810E-03 3.7733E-04 -4.3028E-05 2.9084E-06 -8.8262E-08
TABLE 16-2
Fig. 16A shows an on-axis chromatic aberration curve of the photographic lens of embodiment 8, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the photographing lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the photographing lens of embodiment 8, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 16A to 16C, the photographing lens of embodiment 8 can achieve good imaging quality.
Example 9
A photographic lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18C. Fig. 17 shows a schematic configuration diagram of a photographic lens according to embodiment 9 of the present application.
As shown in fig. 17, the photographing 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 filter E6, and an imaging surface S13.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is convex. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In this example, the effective focal length f of the photographing lens is 14.84mm, the total length TTL of the photographing lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 of the photographing lens) is 13.50mm, half Imgh of the diagonal length of the effective pixel region on the imaging surface S13 of the photographing lens is 3.90mm, and the maximum half field angle Semi-FOV of the photographing lens is 14.6 °.
Table 17 shows a basic parameter table of a photographic lens of embodiment 9, in which the units of radius of curvature, thickness, and effective focal length are all millimeters (mm). Tables 18-1 and 18-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 17
Face number A4 A6 A8 A10 A12 A14 A16
S1 -6.7697E-04 -2.5024E-04 2.7274E-04 -1.8239E-04 1.3735E-05 5.1589E-05 -3.5928E-05
S2 8.8239E-04 8.1152E-03 -7.1308E-04 -2.5212E-02 4.6274E-02 -4.4128E-02 2.7019E-02
S3 2.9895E-03 4.8983E-03 1.0046E-02 -4.9311E-02 7.8809E-02 -7.2342E-02 4.3390E-02
S4 7.6229E-03 -6.8609E-03 3.4635E-02 -9.8137E-02 1.7280E-01 -2.0768E-01 1.7898E-01
S5 1.0797E-02 6.7436E-03 -4.4192E-02 1.8360E-01 -4.6423E-01 7.7400E-01 -8.9152E-01
S6 8.7863E-03 1.5966E-02 -1.0401E-01 4.4637E-01 -1.2091E+00 2.2064E+00 -2.8105E+00
S7 -2.7624E-03 3.4600E-02 -1.9444E-01 5.6208E-01 -1.1326E+00 1.6751E+00 -1.8403E+00
S8 4.1282E-04 5.8795E-02 -2.6166E-01 5.5984E-01 -7.6850E-01 7.4837E-01 -5.4017E-01
S9 -2.9542E-02 5.1286E-02 -1.9974E-01 3.9559E-01 -4.7734E-01 3.8980E-01 -2.2622E-01
S10 -2.9261E-02 4.4138E-03 8.4145E-03 -3.4139E-02 6.3278E-02 -7.1394E-02 5.3603E-02
TABLE 18-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 1.2319E-05 -2.5073E-06 3.0724E-07 -2.0985E-08 6.1482E-10 0.0000E+00 0.0000E+00
S2 -1.1384E-02 3.3858E-03 -7.1183E-04 1.0371E-04 -9.9763E-06 5.7033E-07 -1.4686E-08
S3 -1.7838E-02 5.0946E-03 -1.0003E-03 1.3010E-04 -1.0343E-05 4.1910E-07 -4.8295E-09
S4 -1.1323E-01 5.2859E-02 -1.8015E-02 4.3576E-03 -7.0817E-04 6.9260E-05 -3.0772E-06
S5 7.2689E-01 -4.2332E-01 1.7515E-01 -5.0320E-02 9.5481E-03 -1.0762E-03 5.4583E-05
S6 2.5471E+00 -1.6523E+00 7.6162E-01 -2.4349E-01 5.1308E-02 -6.4055E-03 3.5875E-04
S7 1.5007E+00 -9.0104E-01 3.9161E-01 -1.1946E-01 2.4196E-02 -2.9163E-03 1.5810E-04
S8 2.9359E-01 -1.2001E-01 3.6334E-02 -7.8870E-03 1.1572E-03 -1.0239E-04 4.1101E-06
S9 9.5262E-02 -2.9255E-02 6.5127E-03 -1.0325E-03 1.1210E-04 -7.6097E-06 2.4772E-07
S10 -2.7931E-02 1.0273E-02 -2.6614E-03 4.7555E-04 -5.5797E-05 3.8694E-06 -1.2021E-07
Table 18-2 fig. 18A shows an on-axis chromatic aberration curve of the photographic lens of example 9, which indicates the convergence focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the photographing lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the photographing lens of embodiment 9, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 18A to 18C, the photographing lens of embodiment 9 can achieve good imaging quality.
In summary, examples 1 to 9 each satisfy the relationship shown in table 19.
TABLE 19
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the photographic lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (15)

1. The photographic lens is characterized by comprising the following components 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 convex image side surface;
a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface;
The object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;
A fourth lens element with positive refractive power having a concave object-side surface and a convex image-side surface, and
A fifth lens with focal power, the image side of which is concave, wherein,
The number of lenses with optical power in the photographic lens is five;
The distance BFL between the image side surface of the fifth lens and the imaging surface of the photographing lens on the optical axis, the distance TD between the object side surface of the first lens and the image side surface of the fifth lens on the optical axis, the effective focal length fa of the lens with the smallest abbe number from the first lens to the fifth lens, and the effective focal length f of the photographing lens satisfy:
BFL/TD < 1.1.02-3.27, fa/f 1.60-3;
the combined focal length f123 of the first lens, the second lens and the third lens, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length f of the photographic lens meet that f123/f+f45/f is more than or equal to 3.36 and less than or equal to 4.81;
The effective focal length f2 of the second lens and the effective focal length f3 of the third lens are 0.46-0.2/f 3-0.63.
2. The photographing lens of claim 1, wherein an on-axis distance TD from an object side surface of the first lens to an image side surface of the fifth lens and a half Imgh of a diagonal length of an effective pixel area on an imaging surface of the photographing lens satisfy 1.68 < TD/Imgh < 1.71.
3. The photographing lens of claim 1, wherein a center thickness CT1 of the first lens on the optical axis and an edge thickness ET3 of the third lens satisfy 3.16≤CT 1/ET 3≤7.54.
4. The photographic lens as claimed in claim 1, wherein a combined focal length f34 of the third lens and the fourth lens, an effective focal length f3 of the third lens, and a refractive index N3 of the third lens satisfy 2.29≤f34/f3xn3≤5.91.
5. The photographic lens as claimed in claim 1, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and an effective focal length f4 of the fourth lens satisfy 0.27 +.f1-f 2)/f 4 +.0.52.
6. The photographing lens of claim 1, wherein a radius of curvature R4 of an image side of the second lens and a radius of curvature R10 of an image side of the fifth lens satisfy 0< R4/R10≤0.46.
7. The photographic lens of claim 1, wherein a center thickness CT1 of the first lens on the optical axis and an effective focal length f of the photographic lens satisfy 0.24 + (ct1+ct2+ct3+ct4+ct5)/f <0.3.
8. The photographic lens as claimed in claim 1, wherein a maximum half field angle Semi-FOV of the photographic lens, a radius of curvature R9 of an object side surface of the fifth lens, and a radius of curvature R10 of an image side surface of the fifth lens satisfy-3.33. Ltoreq.TAN (Semi-FOV) × (R9+R10)/(R9-R10). Ltoreq.0.97.
9. The photographic lens as claimed in any one of claims 1 to 8, wherein an air interval T34 of the third lens and the fourth lens on the optical axis, an air interval T12 of the first lens and the second lens on the optical axis satisfies 12.85≤t34/t12≤18.89.
10. The photographic lens as claimed in any one of claims 1 to 8, wherein an abbe number V1 of the first lens, an abbe number V2 of the second lens, an abbe number V3 of the third lens, an abbe number V4 of the fourth lens, and an abbe number V5 of the fifth lens satisfy 3.40 +.v1+v3+v5)/(v2+v4) +.3.72.
11. The photographic lens as claimed in any one of claims 1 to 8, 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 0.3< ct5/CT 1+.0.41.
12. The photographic lens as claimed in any one of claims 1 to 8, wherein, of the first to fifth lenses, a radius of curvature Rx of an object side surface of a lens having a smallest center thickness on the optical axis satisfies 2.17+.rx/Ry <2.7 with a radius of curvature Ry of an image side surface thereof.
13. The photographic lens as claimed in any one of claims 1 to 8, wherein a sum Σct of center thicknesses of the first lens to the fifth lens on the optical axis and a distance TD of an object side surface of the first lens to an image side surface of the fifth lens on the optical axis satisfies 0.5< Σct/TD <0.65.
14. The photographic lens as claimed in any one of claims 1 to 8, wherein an on-axis distance SAG11 between an intersection of the object side surface of the first lens and the optical axis to an effective radius vertex of the object side surface of the first lens and a radius of curvature R1 of the object side surface of the first lens satisfy 0.26 +≤ |sag11/r1| <0.3.
15. The photographic lens as claimed in any one of claims 1 to 8, wherein a refractive index Nmax of the first to fifth lenses, a radius Ra of curvature of an object side surface of the lens having the largest refractive index, and a radius Rb of curvature of an image side surface satisfy 1.7< Nmax x Ra/rb≤2.
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