CN108345092B - Optical imaging lens - Google Patents
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- CN108345092B CN108345092B CN201810454110.3A CN201810454110A CN108345092B CN 108345092 B CN108345092 B CN 108345092B CN 201810454110 A CN201810454110 A CN 201810454110A CN 108345092 B CN108345092 B CN 108345092B
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 199
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 238000003384 imaging method Methods 0.000 claims description 53
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- 201000009310 astigmatism Diseases 0.000 description 20
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- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 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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Abstract
The application discloses an optical imaging lens. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens with focal power from an object side to an image side along an optical axis. In the optical imaging lens: the first lens has positive optical power; the second lens has positive focal power and the image side surface of the second lens is convex; the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface and the image side surface of the fifth lens is a concave surface; and the image side surface of the sixth lens is a concave surface. In addition, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4< f2/f1<8.
Description
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including six lenses.
Background
The photosensitive element of a conventional image forming apparatus is typically a CCD (Charge-Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor element). The improvement in performance and the reduction in size of the CCD and COMS devices provide advantages for the development of optical imaging lenses. Meanwhile, the trend of miniaturization of electronic devices equipped with imaging devices, such as smartphones, has put higher demands on miniaturization and image quality improvement of optical imaging lenses equipped with imaging devices.
In recent years, more and more smartphones are beginning to be equipped with a double camera combination. Under this configuration, the wide-angle lens and the telephoto lens are matched to form a double-shot combination so as to achieve the purpose of zooming. Such a double shot combination can achieve an ideal magnification and a good imaging effect in the case of auto-focusing. It is suitable for shooting both near objects and distant objects, and can acquire more details at the same shooting distance. The double-shot combination ensures that people obtain different visual effect feelings, and simultaneously ensures the processing characteristics and miniaturization. Therefore, there is a need for a tele lens that is miniaturized and has excellent imaging quality.
Disclosure of Invention
The application provides an optical imaging lens with six lenses. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens with focal power from an object side to an image side along an optical axis. In the optical imaging lens: the first lens has positive optical power; the second lens has positive focal power and the image side surface of the second lens is convex; the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface and the image side surface of the fifth lens is a concave surface; and the image side surface of the sixth lens is a concave surface. In addition, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4< f2/f1<8.
According to an embodiment of the present application, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5< f/f1<3.
According to an embodiment of the present application, the effective focal length f5 of the fifth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: -1.5< f5/R12<0.
According to the embodiment of the application, the half-diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: imgH/f <0.5.
According to an embodiment of the present application, the radius of curvature R10 of the image side of the fifth lens and the radius of curvature R9 of the object side of the fifth lens satisfy: -1.5< R10/R9<0.
According to the embodiment of the present application, the air interval T56 of the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy: 0.5< T56/CT6<2.
According to the embodiment of the present application, the center thickness CT3 of the third lens and the air interval T34 of the third lens and the fourth lens on the optical axis of the optical imaging lens satisfy: 0.5< CT3/T34<1.
According to an embodiment of the present application, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R4 of the image side of the second lens satisfy: 0< R8/R4<0.5.
According to an embodiment of the present application, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy: 3<f/R1<4.
According to an embodiment of the present application, the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens satisfy: 0< f12/f <0.5.
According to an embodiment of the present application, the radius of curvature R12 of the image side of the sixth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: 0< (R12-R10)/(R12+R10) <1.
The application provides an optical imaging lens with six lenses. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens with focal power from an object side to an image side along an optical axis. In the optical imaging 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 positive focal power and the image side surface of the second lens is convex; the image side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface and the image side surface of the fifth lens is a concave surface; and the image side surface of the sixth lens is a concave surface. In addition, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5< f/f1<3.
The application adopts six-piece type lenses, and the focal power, the surface type, the center thickness of each lens, the axial spacing between each lens and the like of each lens are reasonably distributed, so that the optical imaging lens has at least one beneficial effect of light thinning, miniaturization, long focal length, high 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 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 shows a schematic structural view 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 structural 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 structural view 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;
fig. 13 shows a schematic structural view of an optical 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 optical imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application; and
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 optical imaging lens of embodiment 8, 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.
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, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are sequentially arranged from the object side to the image side along the optical axis.
In an exemplary embodiment, the image side of the second lens is convex; the object side surface of the fifth lens is a concave surface and the image side surface is a concave surface; and the image side surface of the sixth lens is a concave surface.
In an exemplary embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4< f2/f1<8, more specifically 4.73.ltoreq.f2/f 1.ltoreq.7.37. By reasonably distributing the effective focal lengths of the second lens and the first lens, the volume of the optical imaging lens can be effectively controlled, the performance is improved, and the optical imaging lens has better aberration balancing capability.
In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 1.5< f/f1<3, more specifically 1.83.ltoreq.f1.ltoreq.2.11. The effective focal length of the first lens is reasonably set, so that the long-focus characteristic of the optical imaging lens is realized. In addition, the light converging capability can be ensured, the light focusing position can be adjusted, and the total length of the optical imaging lens can be shortened.
In an exemplary embodiment, the effective focal length f5 of the fifth lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy: -1.5< f5/R12<0, more specifically, -1.12. Ltoreq.f5/R12. Ltoreq.0.21. By reasonably selecting the ratio between the effective focal length of the fifth lens and the curvature radius of the image side surface of the sixth lens, the curvature radius of the image side surface of the sixth lens is ensured to be positive, namely the image side surface is concave, under the condition that the focal power of the fifth lens is negative, the astigmatism of the optical imaging lens can be effectively balanced, and the miniaturization of the optical imaging lens is further ensured.
In an exemplary embodiment, the half-diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy: imgH/f <0.5, more specifically: imgH/f is less than or equal to 0.44. The ratio between the half diagonal length of the effective pixel area on the imaging surface and the effective focal length of the optical imaging lens is reasonably controlled, so that the optical imaging lens can meet the characteristic of long focus.
In one embodiment, the radius of curvature R10 of the image side of the fifth lens and the radius of curvature R9 of the object side of the fifth lens satisfy: -1.5< R10/R9<0, more specifically-1.25 < R10/R9< 0.07. By reasonably controlling the curvature radius of the image side surface and the object side surface of the fifth lens, the object side surface is ensured to be concave under the condition that the image side surface of the fifth lens is concave. The optical imaging lens has better capability of balancing chromatic aberration and distortion.
In one embodiment, the air space T56 of the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy: 0.5< T56/CT6<2, more specifically 0.72.ltoreq.T56/CT 6.ltoreq.1.67. The size of the optical imaging lens can be effectively reduced and the characteristic of long focus can be met by reasonably distributing the ratio between the air interval of the fifth lens and the sixth lens on the optical axis and the center thickness of the sixth lens. Meanwhile, the structure of the optical imaging lens is adjusted, and the difficulty in lens processing and assembly is reduced.
In one embodiment, the center thickness CT3 of the third lens and the air space T34 of the third lens and the fourth lens on the optical axis of the optical imaging lens satisfy: 0.5< CT3/T34<1, more specifically 0.54.ltoreq.CT 3/T34.ltoreq.0.82. The central thickness of the third lens and the ratio of the air interval between the third lens and the fourth lens on the optical axis are reasonably controlled, so that enough interval space is reserved between the lenses, the degree of freedom change of the surfaces of the lenses is higher, and the capability of correcting astigmatism and field curvature of the optical imaging lens is improved.
In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R4 of the image side of the second lens satisfy: R8/R4 is 0< 0.5, more specifically 0.03.ltoreq.R8/R4.ltoreq.0.49. By reasonably distributing the curvature radius of the fourth lens element image-side surface and the curvature radius of the second lens element image-side surface, the fourth lens element image-side surface is ensured to be convex under the condition that the second lens element image-side surface is convex. In this case, it is possible to effectively balance astigmatism of the optical imaging lens and further ensure miniaturization of the optical imaging lens.
In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy: 3<f/R1<4, more specifically 3.52.ltoreq.f/R1.ltoreq.3.8. By reasonably controlling the curvature radius of the object side surface of the first lens, the astigmatism of the optical imaging lens can be effectively balanced, the deflection angle of the main light ray can be reasonably controlled, and the miniaturization of the optical imaging lens is further ensured.
In one embodiment, the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens satisfy: 0< f12/f <0.5, more specifically 0.42.ltoreq.f12/f.ltoreq.0.49. By reasonably controlling the combined focal length of the first lens and the second lens, the characteristic of long focus can be realized while correcting aberration. In addition, in this case, it is also helpful to appropriately shorten the total length of the optical imaging lens, satisfying the light and thin requirements.
In one embodiment, the radius of curvature R12 of the image side of the sixth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: 0< (R12-R10)/(R12+R10) <1, more specifically, 0.21.ltoreq.R12-R10)/(R12+R10).ltoreq.0.66. By reasonably distributing the radii of curvature of the image side of the sixth lens and the image side of the fifth lens, the optical imaging lens can be better matched with the chief ray angle of the chip.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm to enhance the imaging quality of the lens. For example, a diaphragm may be provided at 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 optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface shape, the 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 optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. Meanwhile, the optical imaging lens configured as described above has advantageous effects such as light weight, miniaturization, long focal length, high imaging quality, 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 optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six 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, an optical 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 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 negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are 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 sixth lens element E6 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 a coneCoefficients (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-S16 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 . It can be seen that, in the present embodiment, the first lens E1 to the sixth lens E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.2810E-03 | 2.7840E-03 | 3.4850E-03 | -5.1400E-03 | 5.8440E-03 | -3.3600E-03 | 5.9400E-04 | 0.0000E+00 | 0.0000E+00 |
| S2 | 7.0610E-03 | 9.7564E-02 | -1.6166E-01 | 1.5082E-01 | -1.0594E-01 | 5.3240E-02 | -1.2270E-02 | 0.0000E+00 | 0.0000E+00 |
| S3 | -6.6300E-03 | 1.5312E-01 | -2.2949E-01 | 1.7969E-01 | -1.0490E-01 | 5.5076E-02 | -1.5330E-02 | 0.0000E+00 | 0.0000E+00 |
| S4 | -2.7520E-02 | 2.6710E-01 | -4.7785E-01 | 4.1961E-01 | -1.7440E-01 | 1.5724E-02 | 7.0930E-03 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.2273E-01 | 4.8560E-01 | -1.0199E+00 | 1.3394E+00 | -1.0554E+00 | 4.6183E-01 | -8.4300E-02 | 0.0000E+00 | 0.0000E+00 |
| S6 | 4.5245E-02 | 2.1528E-02 | -1.2526E-01 | 1.2150E-01 | 6.8721E-02 | -1.1386E-01 | 1.4022E-02 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.2771E-01 | -9.0390E-02 | 6.0028E-02 | 6.7472E-01 | -7.1627E+00 | 2.2923E+01 | -3.6888E+01 | 3.1985E+01 | -1.2380E+01 |
| S8 | -6.0414E-01 | 3.0745E+00 | -1.2887E+01 | 4.1993E+01 | -1.0383E+02 | 1.7598E+02 | -1.8738E+02 | 1.1259E+02 | -2.9414E+01 |
| S9 | -4.5887E-01 | 1.8229E+00 | -4.5802E+00 | 6.7481E+00 | -7.3016E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -2.9516E-01 | 7.6933E-01 | -1.5559E+00 | 1.9333E+00 | -1.3794E+00 | 5.0577E-01 | -7.0540E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -8.5120E-02 | 5.7322E-02 | -4.5840E-02 | 3.3990E-02 | -1.8630E-02 | 6.7610E-03 | -1.4900E-03 | 1.7300E-04 | -7.7532E-06 |
| S12 | -9.5580E-02 | 6.2063E-02 | -4.7020E-02 | 2.6762E-02 | -1.0430E-02 | 2.6600E-03 | -4.2000E-04 | 3.8300E-05 | -1.5041E-06 |
TABLE 2
Table 3 gives the effective focal lengths f1 to f6 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S15), and the horizontal field angle HFOV of the optical imaging lens.
| f1(mm) | 2.63 | f(mm) | 5.55 |
| f2(mm) | 16.67 | TTL(mm) | 5.40 |
| f3(mm) | -3.02 | HFOV(°) | 23.3 |
| f4(mm) | 4.99 | ||
| f5(mm) | -3.82 | ||
| f6(mm) | -14.46 |
TABLE 3 Table 3
In embodiment 1, the optical imaging lens has the following parameter configuration.
The effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: f2/f1=6.34.
The effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: ff1=2.11.
The effective focal length f5 of the fifth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: f5/r12= -0.59.
The half-diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the effective focal length f of the optical imaging lens satisfy the following conditions: imgH/f=0.44.
The radius of curvature R10 of the image side surface of the fifth lens and the radius of curvature R9 of the object side surface of the fifth lens satisfy: r10/r9= -0.89.
The air interval T56 between the fifth lens and the sixth lens on the optical axis of the optical imaging lens and the center thickness CT6 of the sixth lens satisfy: t56/CT6 = 1.14.
The center thickness CT3 of the third lens and the air interval T34 of the third lens and the fourth lens on the optical axis of the optical imaging lens satisfy: CT 3/t34=0.57.
The radius of curvature R8 of the image side of the fourth lens and the radius of curvature R4 of the image side of the second lens satisfy: r8/r4=0.35.
The effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens satisfy the following conditions: f/r1=3.65.
The combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens satisfy: f12/f=0.43.
The radius of curvature R12 of the image side of the sixth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: (r12—r10)/(r12+r10) =0.24.
In addition, fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents 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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.4210E-03 | 6.1180E-03 | -4.6400E-03 | -7.8400E-03 | 2.5208E-02 | -2.1333E-02 | 5.4900E-03 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.0317E-02 | 1.1059E-01 | -3.2659E-01 | 5.9819E-01 | -6.2474E-01 | 3.2521E-01 | -6.3810E-02 | 0.0000E+00 | 0.0000E+00 |
| S3 | -2.6500E-03 | 2.3548E-01 | -6.1632E-01 | 1.0764E+00 | -1.2085E+00 | 7.1996E-01 | -1.6851E-01 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.6413E-01 | 9.7355E-01 | -2.2783E+00 | 2.7087E+00 | -1.7659E+00 | 6.1490E-01 | -9.0450E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.9086E-01 | 1.2348E+00 | -3.4268E+00 | 5.0226E+00 | -4.0903E+00 | 1.7673E+00 | -3.1400E-01 | 0.0000E+00 | 0.0000E+00 |
| S6 | 2.6518E-02 | 4.4260E-01 | -1.8140E+00 | 3.4150E+00 | -3.4681E+00 | 1.7954E+00 | -3.5773E-01 | 0.0000E+00 | 0.0000E+00 |
| S7 | -3.9327E-01 | 1.9827E+00 | -8.8914E+00 | 2.9129E+01 | -6.8819E+01 | 1.1370E+02 | -1.2502E+02 | 8.2162E+01 | -2.4319E+01 |
| S8 | -4.9691E-01 | 3.5492E+00 | -1.5192E+01 | 4.6594E+01 | -1.0422E+02 | 1.6109E+02 | -1.5851E+02 | 8.8303E+01 | -2.1236E+01 |
| S9 | -4.9963E-01 | 1.7883E+00 | -4.5639E+00 | 6.8019E+00 | -7.3016E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -2.6016E-01 | 7.7663E-01 | -1.5672E+00 | 1.9250E+00 | -1.3809E+00 | 5.0817E-01 | -7.0140E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -1.6419E-01 | 2.7357E-01 | -2.6418E-01 | 1.7710E-01 | -8.2240E-02 | 2.5444E-02 | -4.9400E-03 | 5.3500E-04 | -2.4433E-05 |
| S12 | -1.7883E-01 | 2.2715E-01 | -1.8801E-01 | 1.0848E-01 | -4.2935E-02 | 1.1214E-02 | -1.8300E-03 | 1.6800E-04 | -6.6325E-06 |
TABLE 5
Table 6 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 2, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens.
| f1(mm) | 3.03 | f(mm) | 5.54 |
| f2(mm) | 17.87 | TTL(mm) | 5.40 |
| f3(mm) | 761.15 | HFOV(°) | 23.3 |
| f4(mm) | -11.72 | ||
| f5(mm) | -5.79 | ||
| f6(mm) | -6.99 |
TABLE 6
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. 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 sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
TABLE 8
Table 9 gives the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens in embodiment 3.
| f1(mm) | 2.70 | f(mm) | 5.55 |
| f2(mm) | 12.79 | TTL(mm) | 5.40 |
| f3(mm) | -4.07 | HFOV(°) | 23.3 |
| f4(mm) | -500.00 | ||
| f5(mm) | -5.17 | ||
| f6(mm) | -39.18 |
TABLE 9
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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The 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 filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 10
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
TABLE 11
Table 12 gives the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens in embodiment 4.
| f1(mm) | 2.69 | f(mm) | 5.57 |
| f2(mm) | 13.26 | TTL(mm) | 5.40 |
| f3(mm) | -2.89 | HFOV(°) | 23.2 |
| f4(mm) | 5.07 | ||
| f5(mm) | -3.31 | ||
| f6(mm) | 1000.00 |
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical 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 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 at different angles of view. 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 structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, an optical 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.4020E-03 | 4.5930E-03 | -4.0700E-03 | 1.1269E-02 | -1.0960E-02 | 5.0780E-03 | -1.0400E-03 | 0.0000E+00 | 0.0000E+00 |
| S2 | 3.0138E-02 | -1.3210E-02 | 7.9125E-02 | -1.6093E-01 | 1.3906E-01 | -5.3710E-02 | 7.7500E-03 | 0.0000E+00 | 0.0000E+00 |
| S3 | 3.0481E-02 | -4.5800E-03 | 9.0247E-02 | -2.1026E-01 | 1.8495E-01 | -6.4990E-02 | 5.9730E-03 | 0.0000E+00 | 0.0000E+00 |
| S4 | 1.5883E-02 | 7.0283E-02 | -1.8060E-02 | -2.2898E-01 | 3.6710E-01 | -2.3129E-01 | 5.4131E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.3124E-01 | 4.9071E-01 | -9.4414E-01 | 1.1617E+00 | -8.6950E-01 | 3.6673E-01 | -6.5220E-02 | 0.0000E+00 | 0.0000E+00 |
| S6 | 3.1729E-02 | 2.9554E-02 | 8.3222E-02 | -5.6586E-01 | 1.0726E+00 | -7.6077E-01 | 1.1882E-01 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.7580E-01 | -1.1020E-02 | -5.5784E-01 | 4.2532E+00 | -1.8459E+01 | 4.4278E+01 | -5.9664E+01 | 4.3040E+01 | -1.3643E+01 |
| S8 | -5.6606E-01 | 2.5643E+00 | -9.6640E+00 | 2.9235E+01 | -6.8797E+01 | 1.1360E+02 | -1.1830E+02 | 6.9473E+01 | -1.7913E+01 |
| S9 | -4.7506E-01 | 1.8300E+00 | -4.5424E+00 | 6.8664E+00 | -7.3016E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -3.5303E-01 | 7.9306E-01 | -1.5417E+00 | 1.9232E+00 | -1.3840E+00 | 5.1417E-01 | -7.0540E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -7.6710E-02 | 4.4980E-02 | -4.6220E-02 | 4.1067E-02 | -2.4770E-02 | 9.1530E-03 | -1.7800E-03 | 1.2900E-04 | 2.6878E-06 |
| S12 | -8.5600E-02 | 5.4387E-02 | -5.2700E-02 | 3.6411E-02 | -1.6790E-02 | 5.0490E-03 | -9.5000E-04 | 1.0200E-04 | -4.7390E-06 |
TABLE 14
Table 15 shows the effective focal lengths f1 to f6 of the respective lenses in embodiment 5, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens.
| f1(mm) | 2.71 | f(mm) | 5.57 |
| f2(mm) | 12.96 | TTL(mm) | 5.40 |
| f3(mm) | -2.84 | HFOV(°) | 23.2 |
| f4(mm) | 4.49 | ||
| f5(mm) | -3.74 | ||
| f6(mm) | -16.25 |
TABLE 15
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 at different angles of view. 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, an optical 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: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 convex. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 16
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.5170E-03 | 2.4970E-03 | 1.0400E-03 | 1.7660E-03 | -3.4100E-03 | 2.9552E-03 | -1.0000E-03 | 0.0000E+00 | 0.0000E+00 |
| S2 | 6.9630E-03 | 7.1614E-02 | -8.5870E-02 | 6.2573E-02 | -3.8500E-02 | 1.5290E-02 | -2.4000E-03 | 0.0000E+00 | 0.0000E+00 |
| S3 | 8.6900E-06 | 1.1616E-01 | -1.0917E-01 | 4.6733E-02 | -9.6500E-03 | -1.0381E-02 | 6.1660E-03 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.1227E-01 | 5.8447E-01 | -1.1463E+00 | 1.4456E+00 | -1.2660E+00 | 6.5000E-01 | -1.3812E-01 | 0.0000E+00 | 0.0000E+00 |
| S5 | -2.9325E-01 | 1.0570E+00 | -2.1654E+00 | 2.8973E+00 | -2.4491E+00 | 1.1917E+00 | -2.4787E-01 | 0.0000E+00 | 0.0000E+00 |
| S6 | 9.7610E-02 | -2.3543E-01 | 9.6504E-01 | -2.4586E+00 | 3.6054E+00 | -2.4975E+00 | 5.6466E-01 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.6161E-01 | 9.8494E-02 | -5.7884E-01 | 3.8635E+00 | -1.9243E+01 | 5.2257E+01 | -7.9940E+01 | 6.6204E+01 | -2.4027E+01 |
| S8 | -5.0805E-01 | 2.6385E+00 | -9.3890E+00 | 2.5516E+01 | -5.2565E+01 | 7.4058E+01 | -6.2478E+01 | 2.6692E+01 | -4.1291E+00 |
| S9 | -4.7860E-01 | 1.8278E+00 | -4.5319E+00 | 6.8793E+00 | -7.3023E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -3.6085E-01 | 7.8315E-01 | -1.5386E+00 | 1.9369E+00 | -1.3714E+00 | 5.0136E-01 | -7.0340E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -7.8447E-02 | 3.9654E-02 | -4.8300E-02 | 5.7734E-02 | -4.9848E-02 | 2.8420E-02 | -9.6500E-03 | 1.7470E-03 | -1.2931E-04 |
| S12 | -7.9571E-02 | 4.1483E-02 | -3.4960E-02 | 2.0414E-02 | -7.5556E-03 | 1.6900E-03 | -2.0000E-04 | 9.1400E-06 | 1.5671E-07 |
TABLE 17
Table 18 gives the effective focal lengths f1 to f6 of the respective lenses in embodiment 6, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens.
| f1(mm) | 2.77 | f(mm) | 5.55 |
| f2(mm) | 20.40 | TTL(mm) | 5.40 |
| f3(mm) | -3.27 | HFOV(°) | 23.3 |
| f4(mm) | 5.48 | ||
| f5(mm) | -4.12 | ||
| f6(mm) | -17.93 |
TABLE 18
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 at different angles of view. 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.
Example 7
An optical 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 optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 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 negative refractive power, wherein an object-side surface S5 thereof is concave, 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 concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.8490E-03 | 2.2114E-03 | 3.4960E-03 | -2.5000E-03 | 1.6370E-03 | -4.1205E-04 | -1.5000E-04 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.5913E-02 | 3.5966E-02 | -1.5700E-03 | -7.8550E-02 | 9.0043E-02 | -4.0524E-02 | 7.0860E-03 | 0.0000E+00 | 0.0000E+00 |
| S3 | 1.4764E-02 | 5.7351E-02 | 9.9870E-03 | -1.8913E-01 | 2.3101E-01 | -1.1331E-01 | 2.0884E-02 | 0.0000E+00 | 0.0000E+00 |
| S4 | 4.2380E-03 | 1.6013E-01 | -2.4970E-01 | 6.3346E-02 | 1.8155E-01 | -1.8196E-01 | 5.3092E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.5504E-01 | 6.0759E-01 | -1.2679E+00 | 1.6870E+00 | -1.3515E+00 | 5.9098E-01 | -1.0589E-01 | 0.0000E+00 | 0.0000E+00 |
| S6 | 2.7292E-02 | 5.7506E-02 | 2.3107E-02 | -5.7637E-01 | 1.4480E+00 | -1.4440E+00 | 4.9921E-01 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.9657E-01 | 1.8117E-02 | -1.7507E-02 | -1.0249E+00 | 5.1272E+00 | -1.5946E+01 | 2.9832E+01 | -2.8770E+01 | 1.0559E+01 |
| S8 | -5.3493E-01 | 2.4655E+00 | -9.5027E+00 | 2.9109E+01 | -6.8544E+01 | 1.1122E+02 | -1.1218E+02 | 6.3040E+01 | -1.5407E+01 |
| S9 | -4.6613E-01 | 1.8345E+00 | -4.5547E+00 | 6.8118E+00 | -7.3016E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -3.2052E-01 | 7.7603E-01 | -1.5485E+00 | 1.9306E+00 | -1.3820E+00 | 5.0855E-01 | -7.0540E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -7.6329E-02 | 3.9407E-02 | -2.1809E-02 | 5.5040E-03 | 3.6474E-03 | -4.1000E-03 | 1.7120E-03 | -3.4000E-04 | 2.7300E-05 |
| S12 | -8.9034E-02 | 5.5610E-02 | -4.7137E-02 | 3.0105E-02 | -1.3465E-02 | 4.0570E-03 | -7.8000E-04 | 8.6700E-05 | -4.2000E-06 |
Table 20
Table 21 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 7, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and a horizontal field angle HFOV of the optical imaging lens.
| f1(mm) | 2.66 | f(mm) | 5.57 |
| f2(mm) | 15.07 | TTL(mm) | 5.40 |
| f3(mm) | -2.66 | HFOV(°) | 23.2 |
| f4(mm) | 4.16 | ||
| f5(mm) | -3.77 | ||
| f6(mm) | -16.45 |
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical 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 optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values in the case of different angles of view. Fig. 14D shows a magnification chromatic aberration curve of the optical 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 optical imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An optical 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 optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7, and imaging plane S15.
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 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 negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
Table 15 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 22
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. In the present embodiment, the first to sixth lenses E1 to E6 are aspherical mirrors.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.3810E-03 | 1.9439E-03 | 5.7830E-03 | -7.7100E-03 | 7.7270E-03 | -4.0600E-03 | 6.9700E-04 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.0696E-02 | 2.6044E-02 | -5.6100E-03 | -4.2030E-02 | 3.6003E-02 | -5.2700E-03 | -1.6200E-03 | 0.0000E+00 | 0.0000E+00 |
| S3 | 1.9958E-02 | 3.9951E-02 | 1.3857E-02 | -1.3263E-01 | 1.3419E-01 | -4.6000E-02 | 3.0660E-03 | 0.0000E+00 | 0.0000E+00 |
| S4 | 3.3510E-03 | 1.4026E-01 | -1.8761E-01 | -3.2100E-03 | 1.9808E-01 | -1.6592E-01 | 4.4394E-02 | 0.0000E+00 | 0.0000E+00 |
| S5 | -1.3713E-01 | 5.2391E-01 | -1.0408E+00 | 1.3135E+00 | -1.0011E+00 | 4.2243E-01 | -7.3640E-02 | 0.0000E+00 | 0.0000E+00 |
| S6 | 3.1378E-02 | 5.3483E-02 | -4.2390E-02 | -2.8365E-01 | 8.0398E-01 | -7.3957E-01 | 1.9628E-01 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.8162E-01 | -2.0748E-02 | -3.5540E-02 | -8.2900E-03 | 3.1071E-01 | -4.4886E+00 | 1.4526E+01 | -1.7922E+01 | 7.3015E+00 |
| S8 | -5.8967E-01 | 2.7440E+00 | -1.0759E+01 | 3.3862E+01 | -8.1438E+01 | 1.3501E+02 | -1.4014E+02 | 8.1756E+01 | -2.0827E+01 |
| S9 | -4.6728E-01 | 1.8312E+00 | -4.5509E+00 | 6.8311E+00 | -7.3016E+00 | 6.1585E+00 | -2.8038E+00 | 0.0000E+00 | 0.0000E+00 |
| S10 | -3.4063E-01 | 7.8314E-01 | -1.5460E+00 | 1.9282E+00 | -1.3814E+00 | 5.1019E-01 | -7.0540E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -7.6469E-02 | 4.2766E-02 | -3.7633E-02 | 2.9454E-02 | -1.6640E-02 | 6.1370E-03 | -1.3000E-03 | 1.3300E-04 | -4.4000E-06 |
| S12 | -8.6440E-02 | 5.2358E-02 | -4.5996E-02 | 2.9736E-02 | -1.3150E-02 | 3.8440E-03 | -7.1000E-04 | 7.4800E-05 | -3.4000E-06 |
Table 23
Table 24 gives the effective focal lengths f1 to f6 of the respective lenses in embodiment 8, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the horizontal field angle HFOV of the optical imaging lens.
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical 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 optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values in the case of different angles of view. Fig. 16D shows a magnification chromatic aberration curve of the optical 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 optical imaging lens provided in embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 satisfy the relationships shown in table 25.
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| f2/f1 | 6.34 | 5.90 | 4.73 | 4.93 | 4.78 | 7.37 | 5.66 | 5.15 |
| f/f1 | 2.11 | 1.83 | 2.05 | 2.07 | 2.05 | 2.01 | 2.09 | 2.07 |
| f5/R12 | -0.59 | -1.12 | -0.77 | -0.21 | -0.27 | -0.29 | -0.46 | -0.35 |
| ImgH/f | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 |
| R10/R9 | -0.89 | -0.07 | -0.37 | -0.81 | -1.25 | -0.74 | -1.05 | -1.19 |
| T56/CT6 | 1.14 | 1.67 | 0.72 | 0.94 | 1.12 | 0.90 | 1.26 | 1.15 |
| CT3/T34 | 0.57 | 0.82 | 0.54 | 0.59 | 0.67 | 0.63 | 0.67 | 0.65 |
| R8/R4 | 0.35 | 0.32 | 0.49 | 0.35 | 0.33 | 0.03 | 0.41 | 0.33 |
| f/R1 | 3.65 | 3.52 | 3.80 | 3.78 | 3.76 | 3.76 | 3.69 | 3.73 |
| f12/f | 0.43 | 0.49 | 0.42 | 0.42 | 0.42 | 0.45 | 0.43 | 0.42 |
| (R12-R10)/(R12+R10) | 0.24 | 0.21 | 0.27 | 0.66 | 0.50 | 0.57 | 0.32 | 0.41 |
Table 25
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 optical 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 (11)
1. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens with focal power from an object side to an image side along an optical axis, and is characterized in that:
the first lens has positive optical power;
the second lens has positive optical power and an image side surface of the second lens is a convex surface;
the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface and the image side surface of the fifth lens is a concave surface; and
the image side surface of the sixth lens is a concave surface,
wherein, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens satisfy: 4< f2/f1<8;
at least one mirror surface from the object side surface of the first lens to the image side surface of the sixth lens is an aspheric mirror surface;
the number of lenses having optical power in the optical imaging lens is six.
2. The optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f of the optical imaging lens satisfy: 1.5< f/f1<3.
3. The optical imaging lens of claim 1, wherein an effective focal length f5 of the fifth lens and a radius of curvature R12 of an image side surface of the sixth lens satisfy: -1.5< f5/R12<0.
4. The optical imaging lens of claim 1, wherein a half-diagonal length ImgH of an effective pixel area on an imaging surface of the optical imaging lens and an effective focal length f of the optical imaging lens satisfy: imgH/f <0.5.
5. The optical imaging lens of claim 1, wherein a radius of curvature R10 of an image side surface of the fifth lens and a radius of curvature R9 of an object side surface of the fifth lens satisfy: -1.5< R10/R9<0.
6. The optical imaging lens of claim 1, wherein an air space T56 of the fifth lens and the sixth lens on an optical axis of the optical imaging lens and a center thickness CT6 of the sixth lens satisfy: 0.5< T56/CT6<2.
7. The optical imaging lens of claim 1, wherein a center thickness CT3 of the third lens and an air interval T34 of the third lens and the fourth lens on an optical axis of the optical imaging lens satisfy: 0.5< CT3/T34<1.
8. The optical imaging lens of claim 1, wherein a radius of curvature R8 of an image side of the fourth lens and a radius of curvature R4 of an image side of the second lens satisfy: 0< R8/R4<0.5.
9. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and a radius of curvature R1 of an object side surface of the first lens satisfy: 3<f/R1<4.
10. The optical imaging lens of claim 1, wherein a combined focal length f12 of the first lens and the second lens and an effective focal length f of the optical imaging lens satisfy: 0< f12/f <0.5.
11. The optical imaging lens of claim 1, wherein a radius of curvature R12 of an image side surface of the sixth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 0< (R12-R10)/(R12+R10) <1.
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| CN108490588B (en) * | 2018-06-06 | 2023-05-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN109828347B (en) * | 2018-12-27 | 2021-07-30 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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| CN103576296B (en) * | 2013-10-30 | 2015-10-28 | 浙江舜宇光学有限公司 | A kind of pick-up lens |
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