CN110579864B - Optical imaging lens - Google Patents
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- CN110579864B CN110579864B CN201911038339.XA CN201911038339A CN110579864B CN 110579864 B CN110579864 B CN 110579864B CN 201911038339 A CN201911038339 A CN 201911038339A CN 110579864 B CN110579864 B CN 110579864B
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 152
- 230000003287 optical effect Effects 0.000 claims abstract description 82
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- 210000001747 pupil Anatomy 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 description 55
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- 230000035945 sensitivity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 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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Classifications
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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 an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens with optical power, wherein the object side surface of the first lens is a convex surface; a second lens having positive optical power; a third lens with optical power, the object side surface of which is a convex surface; a fourth lens having optical power; a fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a sixth lens having positive optical power; the object side surface of the seventh lens with the focal power is a concave surface. Wherein the total effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, and the effective focal length f6 of the sixth lens satisfy the following conditional expressions: f/EPD < 1.55;0.5 < f6/f < 1.5.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the rapid development of electronic products, portable electronic products such as mobile phones are updated more frequently, and market competition is also more and more intense. Along with the serious homogenization phenomenon of the product, the ratio of the subdivision functions is great. Under the trend, manufacturers of portable electronic products such as mobile phones gradually focus on the photographing quality of the products, and new requirements are continuously put forward for an imaging system.
On the premise of ensuring the imaging quality of the lens, the realization of large aperture, large image surface, high pixel, portability and the like is realized, so that consumers can obtain satisfactory photos in different scenes, and the realization of the large aperture, large image surface, high pixel, portability and the like is one of key technical problems to be solved by portable electronic product manufacturers such as mobile phones and the like.
Disclosure of Invention
The present application provides an optical imaging lens comprising, in order from an object side to an image side along an optical axis: a first lens with optical power, wherein the object side surface of the first lens is a convex surface; a second lens having positive optical power; a third lens with optical power, the object side surface of which is a convex surface; a fourth lens having optical power; a fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a sixth lens having positive optical power; the object side surface of the seventh lens with the focal power is a concave surface.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD < 1.55.
In one embodiment, the effective focal length f6 of the sixth lens and the total effective focal length f of the optical imaging lens may satisfy: 0.5 < f6/f < 1.5.
In one embodiment, the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 0.4 < f 2/(R3+R4) < 0.8.
In one embodiment, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, and the effective focal length f3 of the third lens may satisfy: 0.8 < (f5+f7)/f3 < 1.4.
In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the radius of curvature R9 of the object-side surface of the fifth lens, and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: CT 5/(R9-R10) < 0.1 < 0.9.
In one embodiment, the radius of curvature R11 of the object side of the sixth lens element, the radius of curvature R14 of the image side of the seventh lens element and the total effective focal length f of the optical imaging lens can satisfy: 1.0 < (R11+R14)/f < 1.4.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy: the FOV is less than 70 DEG and less than 80 deg.
In one embodiment, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the separation distance T67 of the sixth lens and the seventh lens on the optical axis may satisfy: 1.0 < (CT6+CT7)/T67 < 1.3.
In one embodiment, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy: 0.3 < CT 4/(CT1+CT2+CT3) < 0.7.
In one embodiment, the combined focal length f12 of the first lens element and the second lens element, the radius of curvature R1 of the object-side surface of the first lens element, and the radius of curvature R2 of the image-side surface of the first lens element may satisfy: 0.8 < f 12/(R1+R2) < 1.2.
In one embodiment, a distance SAG51 on the optical axis from an intersection point of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens, a distance SAG61 on the optical axis from an intersection point of the object side surface of the sixth lens and the optical axis to an effective radius vertex of the object side surface of the sixth lens, and a distance SAG62 on the optical axis from an intersection point of the image side surface of the sixth lens and the optical axis to an effective radius vertex of the image side surface of the sixth lens may satisfy: 0.6 < SAG 51/(SAG61+SAG62) < 1.0.
In one embodiment, a distance SAG71 on the optical axis from an intersection point of the object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the seventh lens, a distance SAG72 on the optical axis from an intersection point of the image side surface of the seventh lens and the optical axis to an effective radius vertex of the image side surface of the seventh lens, and an effective half-caliber DT71 of the object side surface of the seventh lens may satisfy: 0.3 < |SAG71+SAG72|/DT71 < 0.6.
The application adopts a plurality of (e.g. seven) lenses, and the optical imaging lens has at least one beneficial effect of large aperture, large image surface, high pixel, portability, high imaging quality and the like by reasonably distributing the focal power, the surface type, the center thickness of each lens, the axial spacing between each lens and the like.
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 an optical 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 optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical 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 optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical 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 optical imaging lens of embodiment 4;
Fig. 9 shows a schematic configuration diagram of an optical 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 optical imaging lens of embodiment 5;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
Fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6.
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, 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 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 optical imaging lens according to an exemplary embodiment of the present application may include seven lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses among the first lens to the seventh lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens has positive or negative optical power, and its object-side surface may be convex; the second lens may have positive optical power; the third lens has positive focal power or negative focal power, and the object side surface of the third lens can be a convex surface; the fourth lens has positive focal power or negative focal power; the fifth lens element with negative refractive power may have a concave object-side surface and a convex image-side surface; the sixth lens may have positive optical power; the seventh lens has positive optical power or negative optical power, and the object side surface of the seventh lens can be concave.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f/EPD < 1.55, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. The f/EPD is less than 1.55, the optical imaging lens is favorable for better converging incident light, enhancing imaging brightness, improving imaging quality in a distant view state and a near view state, and simultaneously ensuring the characteristics of miniaturization and large image surface of the lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < f6/f < 1.5, wherein f6 is the effective focal length of the sixth lens and f is the total effective focal length of the optical imaging lens. Satisfies 0.5 < f6/f < 1.5, is favorable for the optical imaging lens to better collect incident light, enhances imaging brightness, improves imaging quality in distant view and near view states, and simultaneously ensures the characteristics of miniaturization and large image surface of the lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4 < f 2/(R3+R4) < 0.8, where f2 is the effective focal length of the second lens, R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, f2, R3, and R4 may further satisfy: 0.5 < f 2/(R3+R4) < 0.8. Satisfies 0.4 < f 2/(R3+R4) < 0.8, is favorable for slowing down the deflection of light rays, reduces the overall sensitivity of the system and improves the imaging effect.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.8 < (f5+f7)/f 3 < 1.4, wherein f5 is the effective focal length of the fifth lens, f7 is the effective focal length of the seventh lens, and f3 is the effective focal length of the third lens. Satisfies 0.8 < (f5+f7)/f 3 < 1.4, is favorable for eliminating chromatic aberration of the optical imaging lens, reduces the secondary spectrum of the optical imaging lens, and improves the imaging quality of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1 < CT 5/(R9-R10) < 0.9, wherein CT5 is the center thickness of the fifth lens element on the optical axis, R9 is the radius of curvature of the object-side surface of the fifth lens element, and R10 is the radius of curvature of the image-side surface of the fifth lens element. The lens satisfies CT 5/(R9-R10) < 0.9, is favorable for converging the aberration of the optical system, improves the overall imaging quality, and can ensure the processing feasibility of the fifth lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (R11+R14)/f < 1.4, wherein R11 is the radius of curvature of the object side surface of the sixth lens element, R14 is the radius of curvature of the image side surface of the seventh lens element, and f is the total effective focal length of the optical imaging lens assembly. Satisfies 1.0 < (R11+R14)/f < 1.4, and can effectively improve the close-range imaging quality in a large aperture state, thereby obtaining a satisfactory shooting effect.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 70 DEG < FOV < 80 DEG, wherein FOV is the maximum field angle of the optical imaging lens. More specifically, the FOV may further satisfy: 73 DEG < FOV < 79 deg. Meets the requirement that the FOV is smaller than 70 degrees and smaller than 80 degrees, and can meet the requirement of wide-angle market.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (CT6+CT7)/T67 < 1.3, wherein CT6 is the center thickness of the sixth lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and T67 is the separation distance of the sixth lens and the seventh lens on the optical axis. Satisfying 1.0 < (CT 6+ CT 7)/T67 < 1.3, can promote the close-range imaging quality of optical imaging lens, if surpass the condition formula scope, close-range and far-range imaging quality can not fully give consideration to.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3 < CT 4/(Ct1+Ct2+Ct3) < 0.7, wherein CT4 is the center thickness of the fourth lens on the optical axis, CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. The lens meets the requirement that CT 4/(CT 1+ CT2+ CT 3) < 0.7, can be favorable for guaranteeing the molding characteristic of the lens, slowing down the optical deflection degree, reducing the sensitivity, reducing the whole length of the optical imaging lens and meeting the miniaturization requirement.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.8 < f 12/(R1+R2) < 1.2, where f12 is the combined focal length of the first lens and the second lens, R1 is the radius of curvature of the object side of the first lens, and R2 is the radius of curvature of the image side of the first lens. More specifically, f12, R1, and R2 may further satisfy: 0.9 < f 12/(R1+R2) < 1.2. Satisfies 0.8 < f 12/(R1+R2) < 1.2, is favorable for weakening ghost images formed by internal reflection of the optical imaging lens, improving spherical aberration and reducing field sensitivity of a central area.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.6 < SAG 51/(SAG61+SAG62) < 1.0, wherein SAG51 is the distance on the optical axis between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, SAG61 is the distance on the optical axis between the intersection of the object side surface of the sixth lens and the optical axis and the vertex of the effective radius of the object side surface of the sixth lens, SAG62 is the distance on the optical axis between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens. The method meets the following conditions: SAG 51/(SAG61+SAG62) < 1.0, which is beneficial to excessive uniformity among the apertures of the lenses, structural bearing and uniform stress, and also beneficial to ensuring the processing feasibility.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3 < |SAG71+SAG72|/DT71 < 0.6, wherein SAG71 is the distance on the optical axis between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the distance on the optical axis between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and DT71 is the effective half-caliber of the object side surface of the seventh lens. The method meets the following conditions: 0.3 < |SAG71+SAG72|/DT71 < 0.6, which is beneficial to lens manufacturing and molding and avoids adverse phenomena in the lens molding process.
In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The application provides an optical imaging lens with the characteristics of large aperture, large image surface, high pixel, portability and the like, which has good imaging quality at both distant and near vision and can obtain satisfactory imaging effects in different environments. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the total optical length of the optical imaging lens is reduced, and the processability of the optical imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the seventh lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In this example, the total effective focal length f of the optical imaging lens is 5.44mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens) is 7.30mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.42mm.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following Table 2 shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16、A18 and A 20 that can be used for each of the aspherical mirrors S1-S14 in example 1.
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 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 configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 5.75mm, the total length TTL of the optical imaging lens is 7.30mm, and half the diagonal length ImgH of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.49mm.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -4.4600E-03 | 2.3640E-03 | -4.6700E-03 | 4.7340E-03 | -2.8708E-03 | 1.0270E-03 | -2.2000E-04 | 2.3800E-05 | -1.0525E-06 |
| S2 | -4.9090E-02 | -1.1070E-02 | 5.4230E-03 | -3.1000E-04 | 2.4792E-04 | -3.7000E-04 | 1.3700E-04 | -2.2000E-05 | 1.3204E-06 |
| S3 | 1.0188E-02 | -2.8490E-02 | 5.9570E-03 | -6.9800E-03 | 1.1493E-02 | -7.0200E-03 | 2.1150E-03 | -3.2000E-04 | 2.0198E-05 |
| S4 | -5.7600E-02 | 1.0049E-01 | -1.2356E-01 | 1.1020E-01 | -6.7536E-02 | 2.6976E-02 | -6.7300E-03 | 9.6100E-04 | -6.0456E-05 |
| S5 | -1.3328E-01 | 1.4175E-01 | -1.0955E-01 | 7.7686E-02 | -5.0086E-02 | 2.2679E-02 | -6.3500E-03 | 1.0040E-03 | -6.9777E-05 |
| S6 | -2.4490E-02 | 3.8815E-02 | -4.6200E-03 | -1.6560E-02 | 9.4732E-03 | -2.3000E-04 | -1.4300E-03 | 5.1100E-04 | -5.8204E-05 |
| S7 | -2.6310E-02 | 8.9330E-03 | -8.7600E-03 | -1.1390E-02 | 2.9957E-02 | -2.8220E-02 | 1.3677E-02 | -3.4200E-03 | 3.4913E-04 |
| S8 | -1.4500E-02 | -5.4300E-03 | 1.1271E-02 | -2.0370E-02 | 1.9404E-02 | -1.0630E-02 | 3.3920E-03 | -5.9000E-04 | 4.2773E-05 |
| S9 | 1.7301E-01 | -2.0184E-01 | 1.4352E-01 | -6.8510E-02 | 2.2095E-02 | -4.4600E-03 | 5.0200E-04 | -2.4000E-05 | -8.5328E-09 |
| S10 | 1.0491E-01 | -1.2597E-01 | 8.0960E-02 | -3.2590E-02 | 8.3786E-03 | -1.2800E-03 | 1.0500E-04 | -3.4000E-06 | -9.4754E-09 |
| S11 | -6.5420E-02 | 2.0917E-02 | -1.4360E-02 | 6.2890E-03 | -1.9074E-03 | 4.0200E-04 | -6.1000E-05 | 6.0300E-06 | -2.7878E-07 |
| S12 | 3.0843E-02 | -1.5380E-02 | -1.8900E-03 | 2.6940E-03 | -8.9727E-04 | 1.5800E-04 | -1.5000E-05 | 7.9200E-07 | -1.6532E-08 |
| S13 | -5.5370E-02 | 1.0642E-02 | -3.8600E-03 | 1.7610E-03 | -4.1369E-04 | 5.3000E-05 | -3.8000E-06 | 1.5000E-07 | -2.4436E-09 |
| S14 | -6.7970E-02 | 1.6400E-02 | -4.5100E-03 | 1.1390E-03 | -1.9772E-04 | 2.1500E-05 | -1.4000E-06 | 5.1000E-08 | -7.8587E-10 |
TABLE 4 Table 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, 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 sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 5.74mm, the total length TTL of the optical imaging lens is 7.30mm, and half the diagonal length ImgH of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.49mm.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 5.75mm, the total length TTL of the optical imaging lens is 7.30mm, and half the diagonal length ImgH of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.49mm.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -3.2400E-03 | -3.3887E-04 | -4.7811E-05 | 7.1700E-05 | 4.5111E-05 | -1.3000E-04 | 6.9000E-05 | -1.6000E-05 | 1.4000E-06 |
| S2 | -4.5490E-02 | -1.8332E-02 | 1.5942E-02 | -1.1720E-02 | 7.9907E-03 | -3.5500E-03 | 9.1500E-04 | -1.3000E-04 | 7.2200E-06 |
| S3 | 1.6520E-02 | -4.2105E-02 | 3.2202E-02 | -4.0420E-02 | 3.5941E-02 | -1.7560E-02 | 4.7830E-03 | -6.9000E-04 | 4.1400E-05 |
| S4 | -5.7190E-02 | 9.5824E-02 | -9.5649E-02 | 5.1444E-02 | -9.2623E-03 | -5.2700E-03 | 3.5630E-03 | -8.2000E-04 | 6.8000E-05 |
| S5 | -1.3755E-01 | 1.3621E-01 | -6.9539E-02 | -4.4900E-03 | 3.4499E-02 | -2.7120E-02 | 1.0735E-02 | -2.1800E-03 | 1.7800E-04 |
| S6 | -2.4790E-02 | 3.2854E-02 | 2.0635E-02 | -6.4240E-02 | 5.9061E-02 | -3.0760E-02 | 9.6610E-03 | -1.6800E-03 | 1.2200E-04 |
| S7 | -2.5420E-02 | 2.4303E-02 | -5.8620E-02 | 8.2567E-02 | -7.6385E-02 | 4.5382E-02 | -1.6760E-02 | 3.4860E-03 | -3.1000E-04 |
| S8 | 8.7500E-04 | -5.9882E-04 | 6.4028E-04 | -9.0000E-03 | 1.0731E-02 | -5.9800E-03 | 1.8180E-03 | -2.9000E-04 | 1.9600E-05 |
| S9 | 1.3694E-01 | -1.2229E-01 | 6.4491E-02 | -2.2330E-02 | 5.6490E-03 | -9.8000E-04 | 9.9500E-05 | -4.3000E-06 | -9.5000E-09 |
| S10 | 9.0401E-02 | -8.7862E-02 | 4.3910E-02 | -1.2880E-02 | 2.1819E-03 | -1.3000E-04 | -1.4000E-05 | 1.9100E-06 | -2.8000E-08 |
| S11 | -3.4260E-02 | -6.4421E-03 | 2.9726E-03 | -3.2700E-03 | 1.9606E-03 | -6.2000E-04 | 1.0200E-04 | -8.3000E-06 | 2.5700E-07 |
| S12 | 1.4102E-02 | -1.3815E-03 | -1.2687E-02 | 7.4150E-03 | -2.1563E-03 | 3.6600E-04 | -3.6000E-05 | 1.9300E-06 | -4.3000E-08 |
| S13 | -6.9200E-02 | 2.6659E-02 | -1.1155E-02 | 3.5670E-03 | -6.8621E-04 | 7.9000E-05 | -5.4000E-06 | 2.0300E-07 | -3.2000E-09 |
| S14 | -7.9820E-02 | 2.6358E-02 | -8.6978E-03 | 2.2030E-03 | -3.6537E-04 | 3.7900E-05 | -2.4000E-06 | 8.2000E-08 | -1.2000E-09 |
Table 8 fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 5.75mm, the total length TTL of the optical imaging lens is 7.30mm, and half the diagonal length ImgH of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.49mm.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.7000E-03 | -1.2932E-03 | 7.0737E-04 | -3.7000E-04 | 2.6500E-04 | -2.2000E-04 | 9.5600E-05 | -2.1000E-05 | 1.7600E-06 |
| S2 | -4.2000E-02 | -2.5977E-02 | 2.2409E-02 | -1.4160E-02 | 8.0440E-03 | -3.2400E-03 | 7.9400E-04 | -1.1000E-04 | 5.9400E-06 |
| S3 | 1.9708E-02 | -4.7234E-02 | 3.1532E-02 | -3.3540E-02 | 2.9386E-02 | -1.4490E-02 | 3.9770E-03 | -5.7000E-04 | 3.4200E-05 |
| S4 | -5.3360E-02 | 8.2831E-02 | -7.8985E-02 | 4.2401E-02 | -7.9300E-03 | -4.7200E-03 | 3.3780E-03 | -8.1000E-04 | 7.1200E-05 |
| S5 | -1.3560E-01 | 1.2498E-01 | -4.9421E-02 | -2.3900E-02 | 4.6852E-02 | -3.3000E-02 | 1.2781E-02 | -2.6100E-03 | 2.1800E-04 |
| S6 | -2.4500E-02 | 3.4234E-02 | 1.5823E-02 | -5.4860E-02 | 4.7925E-02 | -2.2750E-02 | 6.2730E-03 | -9.0000E-04 | 4.5800E-05 |
| S7 | -2.4320E-02 | 2.6045E-02 | -6.5699E-02 | 9.5184E-02 | -8.9840E-02 | 5.4305E-02 | -2.0390E-02 | 4.3130E-03 | -3.9000E-04 |
| S8 | 5.9050E-03 | -3.7761E-03 | 3.7565E-03 | -1.1730E-02 | 1.2702E-02 | -6.9500E-03 | 2.0980E-03 | -3.4000E-04 | 2.2300E-05 |
| S9 | 1.3584E-01 | -1.1931E-01 | 6.1071E-02 | -1.9510E-02 | 4.2520E-03 | -6.0000E-04 | 4.6300E-05 | -1.4000E-06 | -1.0000E-08 |
| S10 | 9.4412E-02 | -9.3659E-02 | 5.0978E-02 | -1.8940E-02 | 5.4680E-03 | -1.2400E-03 | 2.1200E-04 | -2.3000E-05 | 1.1300E-06 |
| S11 | -2.9520E-02 | -1.0331E-02 | 6.3930E-03 | -5.4500E-03 | 2.8300E-03 | -8.2000E-04 | 1.3200E-04 | -1.1000E-05 | 3.4300E-07 |
| S12 | 1.0390E-02 | 3.0420E-03 | -1.4987E-02 | 8.1190E-03 | -2.2800E-03 | 3.7900E-04 | -3.7000E-05 | 1.9800E-06 | -4.4000E-08 |
| S13 | -7.0830E-02 | 3.4375E-02 | -1.6649E-02 | 5.3700E-03 | -1.0300E-03 | 1.1900E-04 | -8.3000E-06 | 3.1900E-07 | -5.3000E-09 |
| S14 | -7.7710E-02 | 2.7900E-02 | -1.0110E-02 | 2.5520E-03 | -4.0000E-04 | 3.9200E-05 | -2.3000E-06 | 7.4600E-08 | -1.0000E-09 |
Table 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has 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 convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the optical imaging lens is 5.61mm, the total length TTL of the optical imaging lens is 7.30mm, and the half of the diagonal length ImgH of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.49mm.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -3.9290E-03 | 6.1740E-04 | -1.2100E-03 | 1.2570E-03 | -8.3000E-04 | 2.9200E-04 | -5.2957E-05 | 3.4790E-06 | 5.9806E-08 |
| S2 | -4.6409E-02 | -2.1313E-02 | 2.7550E-02 | -2.6380E-02 | 1.7615E-02 | -7.2100E-03 | 1.7248E-03 | -2.2281E-04 | 1.2040E-05 |
| S3 | 1.6668E-02 | -5.4317E-02 | 7.4838E-02 | -1.0272E-01 | 8.5484E-02 | -4.0750E-02 | 1.1190E-02 | -1.6583E-03 | 1.0322E-04 |
| S4 | -5.7356E-02 | 7.4922E-02 | -1.6950E-02 | -7.9020E-02 | 1.1090E-01 | -7.0590E-02 | 2.4433E-02 | -4.4464E-03 | 3.3386E-04 |
| S5 | -1.3115E-01 | 9.7779E-02 | 3.5739E-02 | -1.6614E-01 | 1.8309E-01 | -1.1005E-01 | 3.8256E-02 | -7.1787E-03 | 5.6221E-04 |
| S6 | -2.0663E-02 | 2.3221E-02 | 2.4466E-02 | -5.2070E-02 | 3.6962E-02 | -1.3040E-02 | 1.9146E-03 | 9.9926E-05 | -4.5626E-05 |
| S7 | -1.6895E-02 | -1.4992E-02 | 5.1730E-02 | -1.0049E-01 | 1.0643E-01 | -6.6530E-02 | 2.4343E-02 | -4.8286E-03 | 4.0207E-04 |
| S8 | 2.1014E-02 | -1.8562E-02 | 1.9583E-02 | -2.6240E-02 | 2.1495E-02 | -1.0290E-02 | 2.8797E-03 | -4.3959E-04 | 2.8360E-05 |
| S9 | 1.3618E-01 | -1.1475E-01 | 5.3752E-02 | -1.5460E-02 | 3.1640E-03 | -4.6000E-04 | 3.9973E-05 | -1.4575E-06 | -6.8362E-09 |
| S10 | 8.2254E-02 | -7.7507E-02 | 3.6549E-02 | -9.9100E-03 | 1.5240E-03 | -7.8000E-05 | -7.8777E-06 | 6.4696E-07 | 2.4653E-08 |
| S11 | -3.6383E-02 | -3.3630E-03 | -1.7500E-03 | 6.9400E-04 | 2.1100E-04 | -1.7000E-04 | 3.5004E-05 | -3.0221E-06 | 8.8209E-08 |
| S12 | 1.6111E-02 | -7.8283E-03 | -7.8000E-03 | 5.5210E-03 | -1.6900E-03 | 2.9100E-04 | -2.8499E-05 | 1.4831E-06 | -3.1757E-08 |
| S13 | -6.4584E-02 | 2.4668E-02 | -9.4600E-03 | 2.7340E-03 | -4.8000E-04 | 5.1300E-05 | -3.2615E-06 | 1.1416E-07 | -1.6981E-09 |
| S14 | -8.2048E-02 | 2.7981E-02 | -8.8500E-03 | 2.0500E-03 | -3.1000E-04 | 2.9400E-05 | -1.6876E-06 | 5.3747E-08 | -7.3070E-10 |
Table 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical 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 optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
In summary, examples 1 to 6 satisfy the relationships shown in table 13, respectively.
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 |
| f/EPD | 1.43 | 1.42 | 1.50 | 1.50 | 1.53 | 1.45 |
| f6/f | 0.79 | 0.82 | 0.54 | 1.24 | 1.44 | 1.38 |
| f2/(R3+R4) | 0.58 | 0.70 | 0.69 | 0.68 | 0.68 | 0.70 |
| (f5+f7)/f3 | 1.11 | 0.99 | 0.84 | 1.20 | 1.36 | 1.12 |
| CT5/(R9-R10) | 0.62 | 0.47 | 0.19 | 0.69 | 0.73 | 0.80 |
| (R11+R14)/f | 1.32 | 1.12 | 1.08 | 1.16 | 1.18 | 1.18 |
| FOV(°) | 77.0 | 74.8 | 74.8 | 74.9 | 74.8 | 75.0 |
| (CT6+CT7)/T67 | 1.01 | 1.21 | 1.11 | 1.19 | 1.16 | 1.14 |
| CT4/(CT1+CT2+CT3) | 0.66 | 0.45 | 0.38 | 0.57 | 0.59 | 0.52 |
| f12/(R1+R2) | 0.96 | 1.11 | 1.12 | 1.10 | 1.10 | 1.10 |
| SAG51/(SAG61+SAG62) | 0.75 | 0.66 | 0.62 | 0.72 | 0.91 | 0.86 |
| |SAG71+SAG72|/DT71 | 0.37 | 0.51 | 0.52 | 0.51 | 0.52 | 0.51 |
TABLE 13
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 optical imaging 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 (11)
1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:
The first lens with positive focal power has a convex object side surface and a concave image side surface;
a second lens element with positive 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 having positive optical power, the image-side surface of which is convex;
A fifth lens element with negative refractive power having a concave object-side surface and a convex image-side surface;
a sixth lens with positive focal power, the object side surface of which is a convex surface;
a seventh lens element with negative refractive power having a concave object-side surface and a concave image-side surface; wherein,
The number of lenses of the optical imaging lens with focal power is seven;
The total effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, and the effective focal length f6 of the sixth lens satisfy the following conditional expression:
1.42≤f/EPD＜1.55；
0.5＜f6/f＜1.5。
2. The optical imaging lens of claim 1, wherein an effective focal length f2 of the second lens, a radius of curvature R3 of an object side of the second lens, and a radius of curvature R4 of an image side of the second lens satisfy: 0.4 < f 2/(R3+R4) < 0.8.
3. The optical imaging lens of claim 1, wherein an effective focal length f5 of the fifth lens, an effective focal length f7 of the seventh lens, and an effective focal length f3 of the third lens satisfy: 0.8 < (f5+f7)/f3 < 1.4.
4. The optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, 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: CT 5/(R9-R10) < 0.1 < 0.9.
5. The optical imaging lens of claim 1, wherein a radius of curvature R11 of an object side surface of the sixth lens, a radius of curvature R14 of an image side surface of the seventh lens, and a total effective focal length f of the optical imaging lens satisfy: 1.0 < (R11+R14)/f < 1.4.
6. The optical imaging lens of claim 1, wherein a maximum field angle FOV of the optical imaging lens satisfies: the FOV is less than 70 DEG and less than 80 deg.
7. The optical imaging lens according to claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, and a separation distance T67 of the sixth lens and the seventh lens on the optical axis satisfy: 1.0 < (CT6+CT7)/T67 < 1.3.
8. The optical imaging lens according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a center thickness CT3 of the third lens on the optical axis satisfy: 0.3 < CT 4/(CT1+CT2+CT3) < 0.7.
9. The optical imaging lens of claim 1, wherein a combined focal length f12 of the first lens and the second lens, a radius of curvature R1 of an object side surface of the first lens, and a radius of curvature R2 of an image side surface of the first lens satisfy: 0.8 < f 12/(R1+R2) < 1.2.
10. The optical imaging lens according to claim 1, wherein a distance SAG51 on the optical axis from an intersection point of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens, a distance SAG61 on the optical axis from an intersection point of the object side surface of the sixth lens and the optical axis to an effective radius vertex of the object side surface of the sixth lens, and a distance SAG62 on the optical axis from an intersection point of the image side surface of the sixth lens and the optical axis to an effective radius vertex of the image side surface of the sixth lens satisfy: 0.6 < SAG 51/(SAG61+SAG62) < 1.0.
11. The optical imaging lens according to claim 1, wherein a distance SAG71 on the optical axis from an intersection point of the object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the seventh lens, a distance SAG72 on the optical axis from an intersection point of the image side surface of the seventh lens and the optical axis to an effective radius vertex of the image side surface of the seventh lens, and an effective half-caliber DT71 of the object side surface of the seventh lens satisfy: 0.3 < |SAG71+SAG72|/DT71 < 0.6.
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| WO2022056934A1 (en) * | 2020-09-21 | 2022-03-24 | 欧菲光集团股份有限公司 | Optical imaging system, image capturing module, and electronic device |
| CN112180578B (en) * | 2020-09-25 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | Visible light-medium wave infrared dual-waveband common-aperture optical system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015072402A (en) * | 2013-10-04 | 2015-04-16 | コニカミノルタ株式会社 | Image capturing lens, image capturing device, and mobile terminal |
| CN106896474A (en) * | 2016-12-30 | 2017-06-27 | 玉晶光电(厦门)有限公司 | Optical mirror slip group |
| CN107300751A (en) * | 2017-08-07 | 2017-10-27 | 江西联益光学有限公司 | Pick-up lens |
| CN107664820A (en) * | 2017-10-19 | 2018-02-06 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN108089317A (en) * | 2018-02-05 | 2018-05-29 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN207764467U (en) * | 2018-02-05 | 2018-08-24 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN209070190U (en) * | 2017-11-08 | 2019-07-05 | 三星电机株式会社 | Optical imaging system |
| CN211061763U (en) * | 2019-10-29 | 2020-07-21 | 浙江舜宇光学有限公司 | Optical imaging lens |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650575B (en) * | 2017-05-22 | 2019-02-11 | 先進光電科技股份有限公司 | Optical imaging system (1) |
| CN107462977B (en) * | 2017-09-21 | 2022-09-06 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN109375351B (en) * | 2018-12-26 | 2020-11-24 | 广东旭业光电科技股份有限公司 | Camera lens group and electronic equipment |
| CN110361854B (en) * | 2019-08-19 | 2024-04-23 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN110579864B (en) * | 2019-10-29 | 2024-05-14 | 浙江舜宇光学有限公司 | Optical imaging lens |
-
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015072402A (en) * | 2013-10-04 | 2015-04-16 | コニカミノルタ株式会社 | Image capturing lens, image capturing device, and mobile terminal |
| CN106896474A (en) * | 2016-12-30 | 2017-06-27 | 玉晶光电(厦门)有限公司 | Optical mirror slip group |
| CN107300751A (en) * | 2017-08-07 | 2017-10-27 | 江西联益光学有限公司 | Pick-up lens |
| CN107664820A (en) * | 2017-10-19 | 2018-02-06 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN209070190U (en) * | 2017-11-08 | 2019-07-05 | 三星电机株式会社 | Optical imaging system |
| CN108089317A (en) * | 2018-02-05 | 2018-05-29 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN207764467U (en) * | 2018-02-05 | 2018-08-24 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN211061763U (en) * | 2019-10-29 | 2020-07-21 | 浙江舜宇光学有限公司 | Optical imaging lens |
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