CN108681039B - Imaging lens - Google Patents
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- CN108681039B CN108681039B CN201810864104.5A CN201810864104A CN108681039B CN 108681039 B CN108681039 B CN 108681039B CN 201810864104 A CN201810864104 A CN 201810864104A CN 108681039 B CN108681039 B CN 108681039B
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- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The application discloses imaging lens, this camera lens includes in proper order along the optical axis from the thing side to the image side: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has optical power, and the image side surface of the second lens is a convex surface; the third lens has positive focal power, and the image side surface of the third lens is a convex surface; the fourth lens has optical power; the fifth lens has optical power, and the object side surface of the fifth lens is a concave surface; in the first lens to the fifth lens, an air space is arranged between any two adjacent lenses. The effective focal length f1 of the first lens, the effective focal length f3 of the third lens and the total effective focal length f of the imaging lens meet 0 < (f1+f3)/f < 2.5.
Description
Technical Field
The present application relates to an imaging lens, and more particularly, to an imaging lens including five lenses.
Background
In recent years, along with the trend of thinning portable electronic products, the miniaturization requirement for a matched imaging lens is also increasing. In addition, the photosensitive elements of a general imaging lens are mainly a photosensitive coupling element (CCD) or a Complementary Metal Oxide Semiconductor (CMOS), and as the semiconductor process technology advances, the number of pixels of the photosensitive elements increases and the size of the pixels decreases. The reduction in the size of the picture element means that the light flux of the lens will be smaller in the same exposure time. The imaging lens has higher requirements on the aperture number of the matched imaging lens, and the imaging lens is required to have larger aperture number so as to meet the imaging requirements under the conditions of insufficient light (such as rainy days, dusk and the like).
Disclosure of Invention
The present application provides an imaging lens applicable to portable electronic products that at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.
In one aspect, the present application provides an imaging lens including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has optical power, and the image side surface of the second lens can be a convex surface; the third lens may have positive optical power, and an image side surface thereof may be convex; the fourth lens has optical power; the fifth lens has optical power, and the object side surface of the fifth lens can be a concave surface; in the first lens to the fifth lens, any two adjacent lenses may have an air space therebetween. The effective focal length f1 of the first lens, the effective focal length f3 of the third lens and the total effective focal length f of the imaging lens can satisfy 0 < (f1+f3)/f < 2.5.
In one embodiment, the maximum effective half-caliber DT41 of the object side surface of the fourth lens and the maximum effective half-caliber DT42 of the image side surface of the fourth lens may satisfy 0.5 < DT41/DT42 < 1.5.
In one embodiment, the radius of curvature R9 of the object side of the fifth lens element and the total effective focal length f of the imaging lens assembly may satisfy-1 < R9/f < 0.
In one embodiment, the image side of the first lens may be concave; the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy 0 < |R1/R2| < 0.5.
In one embodiment, the radius of curvature R6 of the image side of the third lens and the radius of curvature R4 of the image side of the second lens may satisfy 0 < R6/R4 < 1.
In one embodiment, the central thickness CT1 of the first lens element and the central thickness CT4 of the fourth lens element may satisfy 0 < CT4/CT1 < 0.4.
In one embodiment, the separation distance T12 of the first lens and the second lens on the optical axis and the separation distance T34 of the third lens and the fourth lens on the optical axis can satisfy 0 < T34/T12 < 0.5.
In one embodiment, the effective focal length f1 of the first lens and the total effective focal length f of the imaging lens may satisfy 0.5.ltoreq.f/f1.ltoreq.1.5.
In one embodiment, the total effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens may satisfy f/EPD < 2.
In one embodiment, a distance TTL between an object side surface of the first lens and an imaging surface of the imaging lens on an optical axis and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the imaging lens may satisfy TTL/ImgH < 1.6.
In one embodiment, the sum Σct of the center thicknesses of the first lens element to the fifth lens element on the optical axis and the distance TTL between the object side surface of the first lens element and the imaging surface of the imaging lens element on the optical axis may satisfy 0 < Σct/TTL < 0.6.
In one embodiment, the sum Σat of the distances between any two adjacent lenses of the first lens element and the fifth lens element on the optical axis and the distance TTL between the object side surface of the first lens element and the imaging surface of the imaging lens element on the optical axis may satisfy 0 < Σat/TTL < 0.5.
In another aspect, the present application provides an imaging lens including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has optical power, and the image side surface of the second lens can be a convex surface; the third lens may have positive optical power, and an image side surface thereof may be convex; the fourth lens has optical power; the fifth lens has negative focal power, and the object side surface of the fifth lens can be a concave surface; in the first lens to the fifth lens, any two adjacent lenses may have an air space therebetween. The effective focal length f1 of the first lens and the total effective focal length f of the imaging lens can meet the requirement of not less than 0.5|f/f1|not more than 1.5.
In still another aspect, the present application provides an imaging lens including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens has optical power, and the image side surface of the second lens can be a convex surface; the third lens may have positive optical power, and an image side surface thereof may be convex; the fourth lens has optical power; the fifth lens has optical power, and the object side surface of the fifth lens can be a concave surface; in the first lens to the fifth lens, any two adjacent lenses may have an air space therebetween. The maximum effective half-caliber DT41 of the object side surface of the fourth lens and the maximum effective half-caliber DT42 of the image side surface of the fourth lens can satisfy 0.5 < DT41/DT42 < 1.5.
The five lenses are adopted, and the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens are reasonably distributed, so that the imaging lens has at least one beneficial effect of ultra-thin, large aperture, excellent 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, taken in conjunction with the accompanying drawings. In the drawings:
Fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 1;
fig. 3 shows a schematic structural view of an imaging lens 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 imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 3;
fig. 7 shows a schematic structural diagram of an imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 4;
fig. 9 shows a schematic structural view of an imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 5;
Fig. 11 shows a schematic structural view of an imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 6;
fig. 13 shows a schematic structural view of an imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of an imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 8, respectively;
fig. 17 shows a schematic structural diagram of an imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens of embodiment 9, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are sequentially arranged from the object side to the image side along the optical axis, and each adjacent lens can have an air space therebetween.
In an exemplary embodiment, the first lens may have positive optical power, and its object-side surface may be convex; the second lens has positive focal power or negative focal power, and the image side surface of the second lens can be a convex surface; the third lens may have positive optical power, and an image side surface thereof may be convex; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power, and the object side surface of the fifth lens can be concave.
In an exemplary embodiment, the image side of the first lens may be concave.
In an exemplary embodiment, the object side surface of the second lens may be concave.
In an exemplary embodiment, the fifth lens may have negative optical power.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition f/EPD < 2, where f is the total effective focal length of the imaging lens and EPD is the entrance pupil diameter of the imaging lens. More specifically, f and EPD may further satisfy 1.88.ltoreq.f/EPD.ltoreq.1.90. The ratio of the total effective focal length to the entrance pupil diameter of the imaging system is the image space f-number FNO of the system, and the condition f/EPD is smaller than 2, which is equivalent to ensuring that the system has a larger aperture.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition 0 < (f1+f3)/f < 2.5, where f1 is an effective focal length of the first lens, f3 is an effective focal length of the third lens, and f is a total effective focal length of the imaging lens. More specifically, f1, f3 and f can further satisfy 1.60.ltoreq.f1+f3)/f.ltoreq.1.88. The focal power of the system is reasonably distributed, and the first lens and the third lens have positive focal power to achieve the effect of converging light, so that the problems of light divergence and the like easily generated when light beams pass through a large caliber are avoided as much as possible.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition of-1 < R9/f < 0, where f is the total effective focal length of the imaging lens, and R9 is the radius of curvature of the object side surface of the fifth lens. More specifically, f and R9 may further satisfy-0.6.ltoreq.R9/f.ltoreq.0.1, for example, -0.44.ltoreq.R9/f.ltoreq.0.22. The fifth lens can play a role in bearing partial focal power of the system and correcting light rays, and on the basis, the curvature radius of the object side surface of the fifth lens is reasonably controlled, so that the optical system is favorable for meeting the requirement of the sensor chip on the angle of the main light rays.
In an exemplary embodiment, the imaging lens of the present application may satisfy a condition that TTL/ImgH < 1.6, where TTL is a distance between an object side surface of the first lens and an imaging surface of the imaging lens on an optical axis, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the imaging lens. More specifically, TTL and ImgH may further satisfy 1.3+.ttl/imgh+.1.5, for example, TTL/imgh=1.40. The conditional TTL/ImgH is smaller than 1.6, and the ultra-thin characteristic of the imaging lens is realized.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0 < |r1/r2| < 0.5, where R1 is a radius of curvature of an object side surface of the first lens and R2 is a radius of curvature of an image side surface of the first lens. More specifically, R1 and R2 may further satisfy 0 < |R1/R2|.ltoreq.0.39. The lens shape of the first lens is reasonably controlled to be shaped into a meniscus shape of the curved diaphragm (namely, the object side surface is a convex surface and the image side surface is a concave surface), and the arrangement is beneficial to correcting astigmatism and on-axis spherical aberration in the meridian direction while bearing positive focal power.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.5 < DT41/DT42 < 1.5, where DT41 is the maximum effective half-caliber of the object side surface of the fourth lens element and DT42 is the maximum effective half-caliber of the image side surface of the fourth lens element. More specifically, DT41 and DT42 may further satisfy 0.8.ltoreq.DT 41/DT 42.ltoreq.1.2, e.g., 0.92.ltoreq.DT 41/DT 42.ltoreq.0.95. The surface shape of the fourth lens is reasonably controlled, so that the maximum effective half calibers of the object side surface and the image side surface of the fourth lens are close to each other, the bearing and leaning difference of the two sides of the lens in the lens assembly process is reduced, and the assembly stability is improved.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0 < R6/R4 < 1, where R4 is a radius of curvature of the image side of the second lens and R6 is a radius of curvature of the image side of the third lens. More specifically, R4 and R6 may further satisfy 0 < R6/R4.ltoreq.0.6, for example, 0.11.ltoreq.R 6/R4.ltoreq.0.42. The range of curvature radius of the second lens image side surface and the third lens image side surface is reasonably controlled, so that the ghost image position generated by the two-surface even reflection is moved to be out of the imaging effective surface, and the ghost image generation risk is reduced.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition 0 < CT4/CT1 < 0.4, where CT1 is a central thickness of the first lens element on the optical axis, and CT4 is a central thickness of the fourth lens element on the optical axis. More specifically, CT1 and CT4 may further satisfy 0.23.ltoreq.CT4/CT 1.ltoreq.0.31. The center thickness of the first lens and the center thickness of the fourth lens are reasonably controlled, and the correction of the astigmatic effect of the Petzval field curvature and the arc loss direction is facilitated.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0 < T34/T12 < 0.5, where T12 is a distance between the first lens and the second lens on the optical axis, and T34 is a distance between the third lens and the fourth lens on the optical axis. More specifically, T12 and T34 may further satisfy 0.03.ltoreq.T34/T12.ltoreq.0.21. Sufficient air space is required to be ensured between the first lens and the second lens to place the diaphragm. The air space between the third lens and the fourth lens can be as small as possible in ensuring assembly feasibility to shorten the optical total length of the imaging lens. The ratio of T12 to T34 is reasonably controlled, which is beneficial to reducing the on-axis spherical aberration.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition that Σct/TTL < 0.6, where Σct is a sum of thicknesses of centers of the first lens element to the fifth lens element on the optical axis, respectively, and TTL is a distance between an object side surface of the first lens element and an imaging surface of the imaging lens element on the optical axis. More specifically, sigma CT and TTL may further satisfy 0.3 Sigma CT/TTL < 0.6, for example, 0.46 Sigma CT/TTL < 0.52. On the premise of ensuring that the total optical length of the system is smaller, the center thickness of the five lenses is within a reasonable processing range, and the air interval between every two adjacent lenses is within a certain range, so that the longitudinal chromatic aberration of the corrected imaging lens is adjusted.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.5+.f/f1+.1.5, where f is the total effective focal length of the imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 may further satisfy 0.8.ltoreq.f1.ltoreq.1.2, for example, 0.98.ltoreq.f1.ltoreq.1.04. The effective focal length of the first lens is reasonably controlled so as to balance the third-order distortion magnitude and the third-order astigmatism in the meridian direction while correcting the spherical aberration on the system axis.
In an exemplary embodiment, the imaging lens of the present application may satisfy the condition that Σat/TTL is less than 0.5, where Σat is a sum of distances between any two adjacent lenses of the first lens element and the fifth lens element on the optical axis, and TTL is a distance between an object side surface of the first lens element and an imaging surface of the imaging lens element on the optical axis. More specifically, sigma AT and TTL can further satisfy 0.25 Sigma AT/TTL 0.45, e.g., 0.35 Sigma AT/TTL 0.39. Satisfies the condition that Sigma AT/TTL is less than 0.5, can effectively reduce the size of the imaging lens, avoid the overlarge volume of the imaging lens, reduce the assembly difficulty of the lens and realize higher space utilization.
In an exemplary embodiment, the imaging lens may further include a diaphragm to improve the imaging quality of the lens. The diaphragm may be disposed at an arbitrary position as needed, for example, the diaphragm may be disposed between the first lens and the second lens.
Optionally, the imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The imaging lens with the configuration can also have the beneficial effects of ultra-thin, large caliber, excellent imaging quality, low sensitivity and the like.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality.
However, it will be appreciated by those skilled in the art that the number of lenses making up the imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solutions claimed herein. For example, although the description has been made by taking five lenses as an example in the embodiment, the imaging lens is not limited to include five lenses. The imaging lens may also include other numbers of lenses, if desired.
Specific examples of the imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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.
Table 1 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the imaging lens of embodiment 1, wherein the radii of curvature and thicknesses are each in millimeters (mm).
TABLE 1
As can be seen from table 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 aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S10 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
Table 3 shows half of the diagonal length ImgH of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno (i.e., f/EPD), the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 1.
| ImgH(mm) | 3.28 | f1(mm) | 3.87 |
| TTL(mm) | 4.59 | f2(mm) | -15.58 |
| HFOV(°) | 39.29 | f3(mm) | 2.73 |
| Fno | 1.90 | f4(mm) | -13.46 |
| f(mm) | 3.96 | f5(mm) | -2.40 |
TABLE 3 Table 3
The imaging lens in embodiment 1 satisfies:
f/EPD = 1.90, where f is the total effective focal length of the imaging lens, EPD is the entrance pupil diameter of the imaging lens;
(f1+f3)/f=0.36, wherein f1 is the effective focal length of the first lens E1, f3 is the effective focal length of the third lens E3, and f is the total effective focal length of the imaging lens;
r9/f= -0.36, where f is the total effective focal length of the imaging lens, and R9 is the radius of curvature of the object-side surface S9 of the fifth lens E5;
TTL/imgh=1.40, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S13 on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S13;
r1/r2|=0.35, wherein R1 is a radius of curvature of the object side surface S1 of the first lens element E1, and R2 is a radius of curvature of the image side surface S2 of the first lens element E1;
DT41/DT42 = 0.94, wherein DT41 is the maximum effective half-caliber of the object-side surface S7 of the fourth lens element E4, and DT42 is the maximum effective half-caliber of the image-side surface S8 of the fourth lens element E4;
r6/r4=0.36, where R4 is the radius of curvature of the image-side surface S4 of the second lens element E2, and R6 is the radius of curvature of the image-side surface S6 of the third lens element E3;
T34/t12=0.04, where T12 is the distance between the first lens E1 and the second lens E2 on the optical axis, and T34 is the distance between the third lens E3 and the fourth lens E4 on the optical axis;
Σct/ttl=0.48, wherein Σct is the sum of the thicknesses of the centers of the first lens element E1 to the fifth lens element E5 on the optical axis, respectively, and TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S13 on the optical axis;
i f/f1|=1.02, where f is the total effective focal length of the imaging lens, and f1 is the effective focal length of the first lens E1;
Σat/ttl=0.35, where Σat is the sum of the distances between any two adjacent lenses in the first lens element E1 to the fifth lens element E5 on the optical axis, and TTL is the distance between the object side surface S1 of the first lens element E1 and the imaging surface S13 on the optical axis.
Fig. 2A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 1, which indicates the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the imaging lens of embodiment 1, which represents the corresponding distortion magnitude values at different image heights. Fig. 2D shows a magnification chromatic aberration curve of the imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic structural diagram of an imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the imaging lens according to the exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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.
Table 4 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the imaging lens of example 2, wherein the units of the radii of curvature and thicknesses are millimeters (mm).
TABLE 4 Table 4
As can be seen from table 4, in embodiment 2, 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. Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
Table 6 shows half of the diagonal length of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 2.
| ImgH(mm) | 3.28 | f1(mm) | 4.02 |
| TTL(mm) | 4.59 | f2(mm) | 217.12 |
| HFOV(°) | 39.10 | f3(mm) | 3.60 |
| Fno | 1.88 | f4(mm) | -12.51 |
| f(mm) | 4.06 | f5(mm) | -2.41 |
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 2, which indicates the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the imaging lens of embodiment 2, which represents the corresponding distortion magnitude values at different image heights. Fig. 4D shows a magnification chromatic aberration curve of the imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; 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.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
As can be seen from table 7, in embodiment 3, 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. Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.1105E-02 | 3.2365E-02 | -5.8452E-02 | 4.3959E-02 | -1.4845E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 6.3249E-03 | 2.4820E-02 | -1.7915E-01 | 5.2565E-01 | -7.8737E-01 | 5.7588E-01 | -1.6494E-01 | 0.0000E+00 | 0.0000E+00 |
| S3 | -8.4146E-02 | -1.8606E-01 | 4.9041E-01 | -7.3218E-01 | 4.5440E-01 | 5.7647E-02 | -1.2174E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.5205E-02 | -5.7962E-02 | -2.4817E-02 | 2.0288E-01 | -2.7077E-01 | 1.7234E-01 | -4.0305E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | 1.0275E-01 | -2.7746E-01 | 3.0316E-01 | -2.6202E-01 | 1.3616E-01 | -3.5050E-02 | 3.4637E-03 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.7460E-01 | -3.7936E-01 | 3.7403E-01 | -2.0822E-01 | 6.6158E-02 | -1.1054E-02 | 7.4766E-04 | 0.0000E+00 | 0.0000E+00 |
| S7 | 8.6024E-02 | -2.4880E-01 | 2.8497E-01 | -1.7607E-01 | 6.4683E-02 | -1.4615E-02 | 2.0080E-03 | -1.5512E-04 | 5.2054E-06 |
| S8 | -2.9909E-02 | 8.5617E-02 | -7.8489E-02 | 3.6580E-02 | -1.0174E-02 | 1.7561E-03 | -1.8158E-04 | 9.9941E-06 | -2.1298E-07 |
| S9 | 2.1879E-02 | -3.4882E-02 | 3.2630E-02 | -1.2697E-02 | 2.1179E-03 | -1.3562E-05 | -4.6360E-05 | 6.1884E-06 | -2.6178E-07 |
| S10 | -3.3617E-02 | -1.1904E-03 | 2.4703E-03 | -6.0130E-04 | 3.3560E-05 | 2.7520E-05 | -1.0243E-05 | 1.3970E-06 | -6.6231E-08 |
TABLE 8
Table 9 shows half of the diagonal length of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 3.
| ImgH(mm) | 3.28 | f1(mm) | 4.06 |
| TTL(mm) | 4.59 | f2(mm) | -16.24 |
| HFOV(°) | 39.17 | f3(mm) | 3.46 |
| Fno | 1.89 | f4(mm) | 119.98 |
| f(mm) | 4.02 | f5(mm) | -2.28 |
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 3, which indicates the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the imaging lens of embodiment 3, which represents the corresponding distortion magnitude values at different image heights. Fig. 6D shows a magnification chromatic aberration curve of the imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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.
Table 10 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the imaging lens of example 4, in which the units of the radii of curvature and thicknesses are millimeters (mm).
Table 10
As can be seen from table 10, in example 4, 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. Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.5904E-02 | 1.4296E-02 | -2.5737E-02 | 1.8047E-02 | -6.5702E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.5783E-02 | -2.9969E-02 | 1.3461E-01 | -2.9547E-01 | 3.8911E-01 | -2.7698E-01 | 8.5697E-02 | 0.0000E+00 | 0.0000E+00 |
| S3 | -6.4999E-02 | -1.0015E-01 | 1.4380E-01 | 1.4991E-01 | -9.4463E-01 | 1.4051E+00 | -6.8934E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.6487E-02 | 1.9971E-02 | -1.3846E-01 | 3.0961E-01 | -3.2689E-01 | 1.9569E-01 | -4.6929E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -3.8753E-03 | -7.2063E-02 | 4.1779E-02 | -4.4093E-02 | 3.3800E-02 | -1.0601E-02 | 1.1459E-03 | 0.0000E+00 | 0.0000E+00 |
| S6 | 8.9627E-02 | -1.3365E-01 | 8.4894E-02 | -2.9517E-02 | 6.0226E-03 | -6.3034E-04 | 1.9246E-05 | 0.0000E+00 | 0.0000E+00 |
| S7 | 1.5765E-02 | -6.2000E-03 | -1.6014E-02 | 2.0524E-02 | -1.1052E-02 | 3.3158E-03 | -5.7613E-04 | 5.4346E-05 | -2.1600E-06 |
| S8 | -5.6201E-02 | 1.2420E-01 | -1.1724E-01 | 6.1440E-02 | -1.9766E-02 | 4.0183E-03 | -5.0539E-04 | 3.6004E-05 | -1.1133E-06 |
| S9 | 2.5824E-02 | -3.2368E-02 | 3.1434E-02 | -1.5791E-02 | 4.6983E-03 | -8.6326E-04 | 9.6404E-05 | -6.0044E-06 | 1.5989E-07 |
| S10 | -1.4350E-02 | -2.0333E-02 | 1.7300E-02 | -8.4870E-03 | 2.7028E-03 | -5.5480E-04 | 6.9654E-05 | -4.7938E-06 | 1.3730E-07 |
TABLE 11
Table 12 shows half of the diagonal length of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 4.
| ImgH(mm) | 3.28 | f1(mm) | 3.92 |
| TTL(mm) | 4.59 | f2(mm) | -28.21 |
| HFOV(°) | 39.10 | f3(mm) | 3.20 |
| Fno | 1.90 | f4(mm) | -16.38 |
| f(mm) | 4.06 | f5(mm) | -2.41 |
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the imaging lens of embodiment 4, which represents the corresponding distortion magnitude values at different image heights. Fig. 8D shows a magnification chromatic aberration curve of the imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave; the fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. 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.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
As can be seen from table 13, in example 5, 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. Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.6539E-02 | 1.2068E-02 | -2.5512E-02 | 1.8631E-02 | -7.1541E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.3173E-02 | -3.1866E-03 | 1.6618E-02 | 2.4095E-02 | -8.2255E-02 | 8.4430E-02 | -2.2679E-02 | 0.0000E+00 | 0.0000E+00 |
| S3 | -7.6971E-02 | -6.2150E-02 | -2.1933E-02 | 4.9208E-01 | -1.2912E+00 | 1.4446E+00 | -6.0231E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -8.0821E-02 | 1.8394E-04 | -1.1329E-01 | 2.7228E-01 | -2.8951E-01 | 1.6580E-01 | -3.7227E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | 1.7735E-02 | -9.9502E-02 | 6.0760E-02 | -6.3203E-02 | 4.6227E-02 | -1.4226E-02 | 1.5259E-03 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.1673E-01 | -1.9002E-01 | 1.3130E-01 | -4.8652E-02 | 1.0202E-02 | -1.0815E-03 | 3.6986E-05 | 0.0000E+00 | 0.0000E+00 |
| S7 | 3.6738E-02 | -6.8501E-02 | 6.0050E-02 | -2.9253E-02 | 8.1946E-03 | -1.2554E-03 | 8.4414E-05 | 6.5939E-07 | -2.6671E-07 |
| S8 | -5.8450E-02 | 1.2139E-01 | -1.1090E-01 | 5.5692E-02 | -1.7112E-02 | 3.3053E-03 | -3.9098E-04 | 2.5824E-05 | -7.2886E-07 |
| S9 | 2.9826E-02 | -4.6945E-02 | 4.6325E-02 | -2.3043E-02 | 6.6573E-03 | -1.1729E-03 | 1.2487E-04 | -7.4202E-06 | 1.8969E-07 |
| S10 | -7.2948E-03 | -3.1591E-02 | 2.8207E-02 | -1.4916E-02 | 4.9799E-03 | -1.0384E-03 | 1.2971E-04 | -8.8067E-06 | 2.4871E-07 |
TABLE 14
Table 15 shows half of the diagonal length ImgH of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 5.
| ImgH(mm) | 3.28 | f1(mm) | 4.00 |
| TTL(mm) | 4.59 | f2(mm) | -22.72 |
| HFOV(°) | 39.10 | f3(mm) | 3.18 |
| Fno | 1.89 | f4(mm) | -12.62 |
| f(mm) | 4.06 | f5(mm) | -2.48 |
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 5, which indicates the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the imaging lens of embodiment 5, which represents the corresponding distortion magnitude values at different image heights. Fig. 10D shows a magnification chromatic aberration curve of the imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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 convex. 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.
Table 16 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the imaging lens of example 6, in which the units of the radii of curvature and thicknesses are millimeters (mm).
Table 16
As can be seen from table 16, in example 6, 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. Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.1906E-02 | 6.9771E-03 | -9.8129E-03 | 3.7798E-03 | -7.4356E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.1325E-02 | -8.2544E-02 | 3.9490E-01 | -9.8189E-01 | 1.4093E+00 | -1.0763E+00 | 3.4082E-01 | 0.0000E+00 | 0.0000E+00 |
| S3 | -1.0999E-01 | 1.6214E-01 | -7.5355E-01 | 2.0973E+00 | -3.4182E+00 | 3.0975E+00 | -1.1449E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.2805E-01 | 8.8052E-02 | -2.1308E-01 | 3.8187E-01 | -3.8842E-01 | 2.2680E-01 | -5.3285E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -3.3838E-02 | -3.2152E-02 | 4.8516E-02 | -5.6532E-02 | 3.1017E-02 | -7.4190E-03 | 6.4350E-04 | 0.0000E+00 | 0.0000E+00 |
| S6 | 3.7379E-02 | -5.2825E-02 | 5.1006E-02 | -3.1983E-02 | 1.0919E-02 | -1.7993E-03 | 1.1159E-04 | 0.0000E+00 | 0.0000E+00 |
| S7 | 9.3955E-03 | 4.5443E-03 | -3.3489E-02 | 3.8172E-02 | -2.0792E-02 | 6.3744E-03 | -1.1254E-03 | 1.0696E-04 | -4.2450E-06 |
| S8 | 6.4871E-04 | 1.1695E-02 | -1.8420E-02 | 1.1181E-02 | -3.8018E-03 | 7.9660E-04 | -1.0264E-04 | 7.4779E-06 | -2.3639E-07 |
| S9 | 1.7458E-02 | -1.8899E-02 | 2.0576E-02 | -1.0533E-02 | 3.0409E-03 | -5.2063E-04 | 5.1783E-05 | -2.6970E-06 | 5.3845E-08 |
| S10 | -4.0419E-03 | -1.1757E-02 | 7.7347E-03 | -3.4535E-03 | 9.8762E-04 | -1.7342E-04 | 1.7650E-05 | -9.0903E-07 | 1.6509E-08 |
TABLE 17
Table 18 shows half of the diagonal length ImgH of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 6.
| ImgH(mm) | 3.28 | f1(mm) | 3.93 |
| TTL(mm) | 4.59 | f2(mm) | -19.72 |
| HFOV(°) | 39.68 | f3(mm) | 2.82 |
| Fno | 1.90 | f4(mm) | -10.36 |
| f(mm) | 3.90 | f5(mm) | -2.56 |
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the imaging lens of embodiment 6, which represents the corresponding distortion magnitude values at different image heights. Fig. 12D shows a magnification chromatic aberration curve of the imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic structural diagram of an imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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.
Table 19 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
As can be seen from table 19, in example 7, 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. Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.5968E-02 | -4.6582E-03 | -3.1733E-03 | -6.4862E-04 | -3.5023E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 7.9713E-03 | -2.0253E-01 | 6.3334E-01 | -1.1972E+00 | 1.2958E+00 | -7.4381E-01 | 1.7520E-01 | 0.0000E+00 | 0.0000E+00 |
| S3 | -5.2950E-02 | -1.0924E-01 | 5.6624E-01 | -1.4221E+00 | 2.0356E+00 | -1.3735E+00 | 3.5195E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.4121E-01 | 7.7958E-02 | -1.0849E-01 | 1.1191E-01 | -5.6875E-02 | 4.5352E-02 | -1.6386E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.0324E-02 | -5.4241E-02 | 6.2664E-03 | -9.6842E-03 | 1.2164E-02 | -5.6204E-03 | 9.2732E-04 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.1214E-01 | -1.7375E-01 | 1.2327E-01 | -4.4254E-02 | 7.0641E-03 | -1.2882E-04 | -6.0330E-05 | 0.0000E+00 | 0.0000E+00 |
| S7 | 2.1890E-02 | -2.8576E-02 | -5.1795E-03 | 2.6310E-02 | -1.7059E-02 | 5.1603E-03 | -8.2574E-04 | 6.7356E-05 | -2.2008E-06 |
| S8 | -3.6555E-02 | 1.6009E-01 | -1.9305E-01 | 1.2067E-01 | -4.6141E-02 | 1.1265E-02 | -1.7204E-03 | 1.4970E-04 | -5.6483E-06 |
| S9 | 8.7134E-04 | 1.0272E-02 | -4.0735E-03 | 1.4455E-03 | -4.3606E-04 | 8.7431E-05 | -1.0388E-05 | 6.6289E-07 | -1.7691E-08 |
| S10 | -1.1432E-02 | -2.2455E-02 | 1.9299E-02 | -9.6213E-03 | 3.0062E-03 | -5.8454E-04 | 6.8145E-05 | -4.3305E-06 | 1.1470E-07 |
Table 20
Table 21 shows half of the diagonal length ImgH of the effective pixel region on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 7.
| ImgH(mm) | 3.26 | f1(mm) | 3.89 |
| TTL(mm) | 4.58 | f2(mm) | -29.07 |
| HFOV(°) | 40.10 | f3(mm) | 3.08 |
| Fno | 1.90 | f4(mm) | -9.22 |
| f(mm) | 3.83 | f5(mm) | -2.33 |
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the imaging lens of embodiment 7, which represents the corresponding distortion magnitude values at different image heights. Fig. 14D shows a magnification chromatic aberration curve of the imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave; the fifth lens element E5 has 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.
Table 22 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the imaging lens of example 8, in which the units of the radii of curvature and thicknesses are millimeters (mm).
Table 22
As can be seen from table 22, in example 8, 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. Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.4804E-02 | 6.0700E-03 | -1.6180E-02 | 1.1640E-02 | -5.3912E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.3040E-02 | 1.6096E-03 | -1.2894E-02 | 1.0702E-01 | -2.0667E-01 | 1.8082E-01 | -5.3780E-02 | 0.0000E+00 | 0.0000E+00 |
| S3 | -1.0370E-01 | 5.6191E-02 | -4.6302E-01 | 1.5458E+00 | -2.7760E+00 | 2.5659E+00 | -9.6486E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.3225E-01 | 1.2430E-01 | -3.3284E-01 | 4.8310E-01 | -3.7847E-01 | 1.6615E-01 | -3.0858E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -2.4088E-02 | 3.6384E-02 | -1.3210E-01 | 9.5562E-02 | -2.6063E-02 | 2.3680E-03 | 3.0653E-05 | 0.0000E+00 | 0.0000E+00 |
| S6 | 9.3415E-02 | -1.5623E-01 | 1.3608E-01 | -7.3526E-02 | 2.3981E-02 | -4.1713E-03 | 2.9219E-04 | 0.0000E+00 | 0.0000E+00 |
| S7 | 5.8725E-02 | -1.4209E-01 | 1.4807E-01 | -8.5937E-02 | 2.9835E-02 | -6.3313E-03 | 8.0592E-04 | -5.6588E-05 | 1.6856E-06 |
| S8 | -3.7880E-02 | 7.9742E-02 | -7.4629E-02 | 3.9062E-02 | -1.2646E-02 | 2.5868E-03 | -3.2461E-04 | 2.2762E-05 | -6.8283E-07 |
| S9 | 5.4313E-03 | 1.4076E-02 | -1.2118E-02 | 7.2176E-03 | -2.5981E-03 | 5.5110E-04 | -6.7789E-05 | 4.4810E-06 | -1.2329E-07 |
| S10 | -1.0715E-02 | -7.5197E-03 | 5.6199E-03 | -3.4021E-03 | 1.3486E-03 | -3.0922E-04 | 3.9728E-05 | -2.6541E-06 | 7.1717E-08 |
Table 23
Table 24 shows half of the diagonal length of the effective pixel area on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 8.
| ImgH(mm) | 3.28 | f1(mm) | 3.98 |
| TTL(mm) | 4.59 | f2(mm) | -11.78 |
| HFOV(°) | 39.09 | f3(mm) | 3.29 |
| Fno | 1.89 | f4(mm) | -20.47 |
| f(mm) | 3.99 | f5(mm) | -2.56 |
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 8, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the imaging lens of embodiment 8, which represents the corresponding distortion magnitude values at different image heights. Fig. 16D shows a magnification chromatic aberration curve of the imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the imaging lens provided in embodiment 8 can achieve good imaging quality.
Example 9
An imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic structural diagram of an imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, an imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens E1, a stop STO, 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 concave; the second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is concave, and an image-side surface S4 thereof is convex; the third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex; the fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is 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 convex. 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.
Table 25 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the imaging lens of example 9, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 25
As can be seen from table 25, in example 9, 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. Table 26 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.6066E-02 | 1.5681E-02 | -1.6990E-02 | 5.9746E-03 | -9.1351E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 5.4397E-02 | -3.5477E-01 | 1.5527E+00 | -3.7357E+00 | 5.0924E+00 | -3.6688E+00 | 1.0871E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -8.1438E-02 | -5.2207E-01 | 2.4170E+00 | -6.0390E+00 | 8.3694E+00 | -5.7729E+00 | 1.5902E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.3787E-01 | -3.1989E-01 | 1.0940E+00 | -1.8262E+00 | 1.6467E+00 | -6.8948E-01 | 1.0207E-01 | 0.0000E+00 | 0.0000E+00 |
| S5 | -3.2583E-02 | -6.4175E-02 | 8.3603E-02 | -9.6719E-02 | 5.7406E-02 | -1.4951E-02 | 1.3923E-03 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.0031E-02 | -4.6244E-03 | 2.3251E-02 | -2.8223E-02 | 1.2971E-02 | -2.5711E-03 | 1.8487E-04 | 0.0000E+00 | 0.0000E+00 |
| S7 | 2.5333E-02 | -6.2031E-02 | 6.7515E-02 | -3.5032E-02 | 8.9864E-03 | -8.5322E-04 | -8.1529E-05 | 2.3807E-05 | -1.4218E-06 |
| S8 | 2.2294E-03 | -5.4585E-03 | -2.6575E-03 | 2.2620E-03 | -4.7849E-04 | -2.6317E-07 | 1.2683E-05 | -1.4779E-06 | 4.3049E-08 |
| S9 | 1.9329E-02 | -2.9731E-02 | 3.3996E-02 | -1.9345E-02 | 6.4052E-03 | -1.2943E-03 | 1.5727E-04 | -1.0547E-05 | 2.9952E-07 |
| S10 | 1.2400E-02 | 4.0552E-02 | -6.2673E-02 | 3.6734E-02 | -1.1909E-02 | 2.3047E-03 | -2.6487E-04 | 1.6703E-05 | -4.4577E-07 |
Table 26
Table 27 shows half of the diagonal length of the effective pixel area on the imaging surface S13, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, the maximum half field angle HFOV, the f-number Fno, the total effective focal length f of the imaging lens, and the effective focal lengths f1 to f5 of the respective lenses in embodiment 9.
| ImgH(mm) | 3.28 | f1(mm) | 3.86 |
| TTL(mm) | 4.58 | f2(mm) | -9.72 |
| HFOV(°) | 39.58 | f3(mm) | 2.35 |
| Fno | 1.90 | f4(mm) | -4.68 |
| f(mm) | 3.87 | f5(mm) | -85672.34 |
Table 27
Fig. 18A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 9, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the imaging lens of embodiment 9, which represents the corresponding distortion magnitude values at different image heights. Fig. 18D shows a magnification chromatic aberration curve of the imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the imaging lens provided in embodiment 9 can achieve good imaging quality.
In summary, examples 1 to 9 each satisfy the relationship shown in table 28.
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| f/EPD | 1.90 | 1.88 | 1.89 | 1.90 | 1.89 | 1.90 | 1.90 | 1.89 | 1.90 |
| R9/f | -0.36 | -0.36 | -0.44 | -0.36 | -0.37 | -0.35 | -0.37 | -0.39 | -0.22 |
| TTL/ImgH | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 | 1.40 |
| |R1/R2| | 0.35 | 0.38 | 0.32 | 0.37 | 0.37 | 0.37 | 0.00 | 0.37 | 0.39 |
| DT41/DT42 | 0.94 | 0.94 | 0.94 | 0.94 | 0.93 | 0.94 | 0.92 | 0.95 | 0.92 |
| R6/R4 | 0.36 | 0.37 | 0.11 | 0.36 | 0.24 | 0.42 | 0.42 | 0.15 | 0.26 |
| CT4/CT1 | 0.28 | 0.23 | 0.26 | 0.27 | 0.24 | 0.25 | 0.23 | 0.28 | 0.31 |
| T34/T12 | 0.04 | 0.05 | 0.11 | 0.06 | 0.04 | 0.05 | 0.03 | 0.04 | 0.21 |
| ∑CT/TTL | 0.48 | 0.50 | 0.46 | 0.48 | 0.48 | 0.49 | 0.48 | 0.48 | 0.52 |
| (f1+f3)/f | 1.67 | 1.88 | 1.87 | 1.76 | 1.77 | 1.73 | 1.82 | 1.82 | 1.60 |
| |f/f1| | 1.02 | 1.01 | 0.99 | 1.04 | 1.01 | 0.99 | 0.98 | 1.00 | 1.00 |
| ∑AT/TTL | 0.35 | 0.36 | 0.37 | 0.36 | 0.37 | 0.36 | 0.39 | 0.39 | 0.39 |
Table 28
The present application also provides an imaging device, the electron-sensitive element of which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the imaging lens described above.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (22)
1. The imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, characterized in that,
The first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has optical power, and the image side surface of the second lens is a convex surface;
the third lens has positive focal power, and the image side surface of the third lens is a convex surface;
the fourth lens has optical power;
the fifth lens has negative focal power, and the object side surface of the fifth lens is a concave surface;
an air space is arranged between any two adjacent lenses in the first lens to the fifth lens;
wherein the number of lenses of the imaging lens with optical power is five,
the effective focal length f1 of the first lens, the effective focal length f3 of the third lens and the total effective focal length f of the imaging lens satisfy 0 < (f1+f3)/f < 2.5, and
the interval distance T12 between the first lens and the second lens on the optical axis and the interval distance T34 between the third lens and the fourth lens on the optical axis satisfy 0 < T34/T12 less than or equal to 0.21.
2. The imaging lens as claimed in claim 1, wherein a maximum effective half-caliber DT41 of an object side surface of the fourth lens and a maximum effective half-caliber DT42 of an image side surface of the fourth lens satisfy 0.5 < DT41/DT42 < 1.5.
3. The imaging lens as claimed in claim 1, wherein a radius of curvature R9 of an object side surface of the fifth lens and a total effective focal length f of the imaging lens satisfy-1 < R9/f < 0.
4. The imaging lens of claim 1, wherein an image side surface of the first lens is concave;
the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy 0 < |R1/R2| < 0.5.
5. The imaging lens as claimed in claim 1, wherein a radius of curvature R6 of an image side surface of the third lens and a radius of curvature R4 of an image side surface of the second lens satisfy 0 < R6/R4 < 1.
6. The imaging lens as claimed in claim 1, wherein a center thickness CT1 of the first lens element on the optical axis and a center thickness CT4 of the fourth lens element on the optical axis satisfy 0 < CT4/CT1 < 0.4.
7. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens and a total effective focal length f of the imaging lens satisfy 0.5 +.f/f1 +.1.5.
8. Imaging lens according to any of claims 1 to 7, characterized in that the total effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens satisfy f/EPD < 2.
9. The imaging lens of any of claims 1 to 7, wherein a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface of the imaging lens and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the imaging lens satisfy TTL/ImgH < 1.6.
10. The imaging lens as claimed in any one of claims 1 to 7, wherein a sum Σct of center thicknesses of the first lens to the fifth lens on the optical axis and a distance TTL between an object side surface of the first lens and an imaging surface of the imaging lens on the optical axis satisfy 0 < Σct/TTL < 0.6, respectively.
11. The imaging lens according to any one of claims 1 to 7, wherein a sum Σat of separation distances on the optical axis of any adjacent two lenses of the first lens to the fifth lens and a distance TTL on the optical axis of an object side surface of the first lens to an imaging surface of the imaging lens satisfy 0 < Σat/TTL < 0.5.
12. The imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens and a fifth lens, characterized in that,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has optical power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex;
the third lens has positive focal power, and the image side surface of the third lens is a convex surface;
the fourth lens has optical power;
the fifth lens has negative focal power, and the object side surface of the fifth lens is a concave surface;
An air space is arranged between any two adjacent lenses in the first lens to the fifth lens;
wherein the number of lenses of the imaging lens with optical power is five,
the effective focal length f1 of the first lens and the total effective focal length f of the imaging lens satisfy 0.5 < f/f1 < 1.5, and
the interval distance T12 between the first lens and the second lens on the optical axis and the interval distance T34 between the third lens and the fourth lens on the optical axis satisfy 0 < T34/T12 less than or equal to 0.21.
13. The imaging lens of claim 12, wherein an image side of the first lens is concave;
the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy 0 < |R1/R2| < 0.5.
14. The imaging lens as claimed in claim 13, wherein an effective focal length f1 of the first lens, an effective focal length f3 of the third lens and a total effective focal length f of the imaging lens satisfy 0 < (f1+f3)/f < 2.5.
15. The imaging lens as claimed in claim 12, wherein a radius of curvature R6 of an image side of the third lens and a radius of curvature R4 of an image side of the second lens satisfy 0 < R6/R4 < 1.
16. The imaging lens as claimed in claim 12, wherein a radius of curvature R9 of an object side surface of the fifth lens and a total effective focal length f of the imaging lens satisfy-1 < R9/f < 0.
17. The imaging lens as claimed in claim 12, wherein a sum Σct of center thicknesses of the first lens element to the fifth lens element on the optical axis and a distance TTL between an object side surface of the first lens element and an imaging surface of the imaging lens element on the optical axis satisfy 0 < Σct/TTL < 0.6, respectively.
18. The imaging lens as claimed in claim 17, wherein a center thickness CT1 of the first lens element on the optical axis and a center thickness CT4 of the fourth lens element on the optical axis satisfy 0 < CT4/CT1 < 0.4.
19. The imaging lens as claimed in claim 18, wherein a maximum effective half-caliber DT41 of an object side surface of the fourth lens and a maximum effective half-caliber DT42 of an image side surface of the fourth lens satisfy 0.5 < DT41/DT42 < 1.5.
20. The imaging lens as claimed in claim 12, wherein a sum Σat of distances between any adjacent two lenses of the first lens to the fifth lens on the optical axis and a distance TTL between an object side surface of the first lens and an imaging surface of the imaging lens on the optical axis satisfy 0 < Σat/TTL < 0.5.
21. The imaging lens of claim 12, wherein a distance TTL from an object side surface of the first lens to an imaging surface of the imaging lens on the optical axis and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the imaging lens satisfy TTL/ImgH < 1.6.
22. The imaging lens of claim 12, wherein the total effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens satisfy f/EPD < 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810864104.5A CN108681039B (en) | 2018-08-01 | 2018-08-01 | Imaging lens |
| PCT/CN2019/084433 WO2020024632A1 (en) | 2018-08-01 | 2019-04-26 | Imaging lens assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810864104.5A CN108681039B (en) | 2018-08-01 | 2018-08-01 | Imaging lens |
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| CN108681039A CN108681039A (en) | 2018-10-19 |
| CN108681039B true CN108681039B (en) | 2023-06-06 |
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| WO (1) | WO2020024632A1 (en) |
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| CN108681039B (en) * | 2018-08-01 | 2023-06-06 | 浙江舜宇光学有限公司 | Imaging lens |
| CN108802974B (en) * | 2018-09-05 | 2023-05-09 | 浙江舜宇光学有限公司 | Optical image lens assembly |
| CN114167589B (en) * | 2022-01-21 | 2024-05-10 | 浙江舜宇光学有限公司 | Imaging lens group |
| CN116719153B (en) * | 2023-08-10 | 2023-12-05 | 江西联益光学有限公司 | optical lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957492A (en) * | 2009-07-14 | 2011-01-26 | 大立光电股份有限公司 | Camera lens |
| JP2014109763A (en) * | 2012-12-04 | 2014-06-12 | Samsung Electronics Co Ltd | Image capturing lens |
| CN104714291A (en) * | 2012-03-03 | 2015-06-17 | 大立光电股份有限公司 | Image pickup optical lens system |
| CN105974557A (en) * | 2015-03-13 | 2016-09-28 | 先进光电科技股份有限公司 | Optical imaging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8427569B2 (en) * | 2009-02-27 | 2013-04-23 | Konica Minolta Opto, Inc. | Image pickup lens, image pickup apparatus, and mobile terminal |
| JP5601857B2 (en) * | 2009-04-07 | 2014-10-08 | 富士フイルム株式会社 | IMAGING LENS, IMAGING DEVICE, AND PORTABLE TERMINAL DEVICE |
| TWI553370B (en) * | 2014-11-19 | 2016-10-11 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI567419B (en) * | 2015-06-26 | 2017-01-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| CN106680974B (en) * | 2017-02-17 | 2022-06-10 | 浙江舜宇光学有限公司 | Camera lens |
| CN108681039B (en) * | 2018-08-01 | 2023-06-06 | 浙江舜宇光学有限公司 | Imaging lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957492A (en) * | 2009-07-14 | 2011-01-26 | 大立光电股份有限公司 | Camera lens |
| CN104714291A (en) * | 2012-03-03 | 2015-06-17 | 大立光电股份有限公司 | Image pickup optical lens system |
| JP2014109763A (en) * | 2012-12-04 | 2014-06-12 | Samsung Electronics Co Ltd | Image capturing lens |
| CN105974557A (en) * | 2015-03-13 | 2016-09-28 | 先进光电科技股份有限公司 | Optical imaging system |
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