CN108459397B - Optical image lens assembly - Google Patents
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- CN108459397B CN108459397B CN201810471501.6A CN201810471501A CN108459397B CN 108459397 B CN108459397 B CN 108459397B CN 201810471501 A CN201810471501 A CN 201810471501A CN 108459397 B CN108459397 B CN 108459397B
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- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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Abstract
The application discloses optical image lens assembly, along the optical axis from the object side to the image side in order can include first lens element, second lens element, third lens element, fourth lens element, fifth lens element and sixth lens element with optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the effective focal length f of the optical image lens assembly and the effective focal length f5 of the fifth lens can satisfy the following conditions: 1<f/f5<3.
Description
Technical Field
The present disclosure relates to optical imaging lens assemblies, and more particularly to an optical imaging lens assembly comprising six lenses.
Background
The current development direction of mobile phones tends to be light and thin, and every inch of space inside the mobile phones is very important. Each generation of updates is a limit of the challenge process. The design space is greatly increased if the space outside the own system can be utilized. The common mobile phone lens is focused by the first lens of the lens, and the protective glass in front of the lens only plays a role in protecting the lens. In order to meet the market development demand, the image lens needs to use a smaller number of lenses as much as possible, shortening the total lens length, but it is thus difficult to meet the imaging quality demand.
Therefore, the present application proposes an optical system applicable to portable electronic products, having miniaturization, large aperture, good imaging quality, and low sensitivity characteristics.
Disclosure of Invention
The technical scheme provided by the application at least partially solves the technical problems.
According to an aspect of the present application, there is provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the effective focal length f of the optical image lens assembly and the effective focal length f5 of the fifth lens satisfy the following conditions: 1<f/f5<3.
In one embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f2 of the second lens can satisfy: 0.5< f/f2<1.5.
In one embodiment, the air space T45 on the optical axis between the fourth lens and the fifth lens and the air space T34 on the optical axis between the third lens and the fourth lens may satisfy: 0.1< T45/T34<0.6.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical image group may satisfy: f1/f < -3. Optionally, the effective focal length f1 of the first lens and the effective focal length f of the optical image group may further satisfy: -30< f1/f < -3.
In one embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f3 of the third lens element may satisfy: -3< f3/f < -1.
In one embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f6 of the sixth lens element may satisfy: -1.5< f/f6< -0.5.
In one embodiment, the effective focal length f of the optical image lens assembly and the curvature radius R2 of the image side surface of the first lens element may satisfy: 0<f/R2<1.
In one embodiment, the curvature radius R6 of the image side surface of the third lens and the curvature radius R3 of the object side surface of the second lens may satisfy: 1< R6/R3<1.5.
In one embodiment, the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5< CT4/CT3<1.5.
In one embodiment, the air space T12 between the first lens element and the second lens element on the optical axis and the distance TTL between the object side surface of the first lens element and the imaging surface of the optical image lens assembly on the optical axis may be: 0.1< (T12×2)/TTL <0.8.
In one embodiment, the distance TTL between the object side surface of the first lens element and the imaging surface of the optical image lens assembly on the optical axis and the center thickness CT5 of the fifth lens element may be as follows: 1.3< CT5/TTL 10<2.6.
In one embodiment, the maximum half field angle HFOV of the optical imaging lens assembly may satisfy the following condition: tan (HFOV) >0.8.
According to another aspect of the present application, there is also provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the effective focal length f of the optical image lens assembly and the effective focal length f2 of the second lens can satisfy the following conditions: 0.5< f/f2<1.5.
According to still another aspect of the present application, there is further provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the effective focal length f of the optical image lens assembly and the effective focal length f3 of the third lens can satisfy the following conditions: -3< f3/f < -1.
According to still another aspect of the present application, there is further provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the effective focal length f of the optical image lens assembly and the effective focal length f6 of the sixth lens can satisfy: -1.5< f/f6< -0.5.
According to still another aspect of the present application, there is further provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the curvature radius R6 of the image side surface of the third lens and the curvature radius R3 of the object side surface of the second lens can satisfy: 1< R6/R3<1.5.
According to still another aspect of the present application, there is further provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and the center thickness CT3 of the third lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5< CT4/CT3<1.5.
According to still another aspect of the present application, there is further provided an optical image lens group, which may include, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical power, wherein: the first lens may have negative optical power, and an object side surface thereof may be a plane; the second lens may have positive optical power; the fifth lens may have positive optical power; the sixth lens may have negative optical power; and an air space T45 on the optical axis between the fourth lens and the fifth lens and an air space T34 on the optical axis between the third lens and the fourth lens may satisfy: 0.1< T45/T34<0.6.
The optical image lens set with the configuration has at least one beneficial effect of large aperture, large field angle, large aperture, miniaturization, high imaging quality, balanced aberration, low sensitivity and the like.
Drawings
The above and other advantages of embodiments of the present application will become apparent by reference to the following detailed description of the embodiments with reference to the accompanying drawings, which are intended to illustrate exemplary embodiments of the present application and not to limit it. In the drawings:
fig. 1 is a schematic view showing the structure of an optical imaging lens assembly according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of embodiment 1;
fig. 3 is a schematic view showing the structure of an optical imaging lens assembly according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of embodiment 2;
fig. 5 is a schematic view showing the structure of an optical imaging lens assembly according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of embodiment 3;
Fig. 7 is a schematic view showing the structure of an optical imaging lens assembly according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of embodiment 4;
fig. 9 is a schematic view showing the structure of an optical imaging lens set according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of embodiment 5;
fig. 11 is a schematic view showing the structure of an optical imaging lens set according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of example 6;
fig. 13 is a schematic view showing the structure of an optical imaging lens set according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of example 7;
fig. 15 is a schematic view showing the structure of an optical imaging lens set according to embodiment 8 of the present application; and
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens set of example 8.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that 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 this specification, the expressions first, second, etc. are only used to distinguish one feature from another feature, and do not represent any limitation of the feature. Accordingly, a first lens discussed below may also be referred to as a second 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, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, 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, the 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.
As used herein, the terms "substantially," "about," and the like are used as terms of a table approximation, not as terms of a table level, and are intended to illustrate inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.
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.
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 herein as the object side, and the surface of each lens closest to the imaging plane is referred to herein as the image side.
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 present application is further described below in connection with specific embodiments.
The optical imaging lens group according to the exemplary embodiment of the present application has, for example, six lenses, 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 arranged in order from the object side to the image side along the optical axis.
In an exemplary embodiment, the first lens may have negative optical power, and its object-side surface may be a plane; the second lens may have positive optical power; the third lens may optionally have positive or negative optical power; the fourth lens may optionally have positive or negative optical power; the fifth lens may have positive optical power; and the sixth lens may have negative optical power. By reasonably controlling the positive and negative focal power distribution of each lens, the low-order aberration of the control system can be effectively balanced, so that the optical image lens group obtains better imaging quality, and the characteristics of large aperture and high pixel can be realized.
In an exemplary embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f5 of the fifth lens element may satisfy: 1<f/f5<3, more specifically, 1.17.ltoreq.f5.ltoreq.1.64 may be further satisfied. By reasonably setting the focal power of the fifth lens, the focal power of the first lens and the third lens in the optical system can be balanced, the sensitivity of the optical system can be reduced, and the astigmatism of the optical system can be corrected.
In an exemplary embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f2 of the second lens may satisfy: 0.5< f/f2<1.5, more specifically, 0.99.ltoreq.f2.ltoreq.1.20 may be further satisfied. The spherical aberration of the optical system can be increased under the large aperture, and the influence of the spherical aberration of the system can be improved when the light rays are converged by reasonably setting the focal power of the second lens, so that the imaging quality is improved.
In an exemplary embodiment, an air interval T45 on the optical axis of the fourth lens and the fifth lens and an air interval T34 on the optical axis of the third lens and the fourth lens may satisfy: 0.1< T45/T34<0.6, more specifically, 0.12.ltoreq.T45/T34.ltoreq.0.51 may be further satisfied. T34 is helpful to adjust the incident angle of light entering the fourth lens, the sensitivity of the fourth lens can be improved by changing the size of the gap between the lenses, and the reasonable ratio is beneficial to the miniaturization design of the system and improves the performance of the system.
In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical image group may satisfy: f1/f < -3. Further, the effective focal length f1 of the first lens and the effective focal length f of the optical image set may satisfy: -30< f1/f < -3, for example, -28.25.ltoreq.f1/f.ltoreq.4.03. Through the focal power of reasonable setting first lens, not only can realize wide-angle characteristic, but also balanced focal power distribution, and have the effect of correcting optical system spherical aberration and field curvature, promote the imaging quality.
In an exemplary embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f3 of the third lens may satisfy: -3< f3/f < -1, more specifically, -2.82 < f3/f < 1.23 may be further satisfied. The spherical aberration generated by the second lens can be balanced by reasonably setting the focal power of the third lens; in addition, the matching of the negative lens is also beneficial to the chromatic aberration correction of the optical system, and the imaging quality can be effectively improved.
In an exemplary embodiment, the effective focal length f of the optical image lens assembly and the effective focal length f6 of the sixth lens may satisfy: -1.5< f/f6< -0.5, more specifically, -1.25.ltoreq.f6.ltoreq.0.94 may be further satisfied. The ratio of f/f6 is too large, so that the sixth lens bears more focal power, the refraction angle of light rays becomes large, and the ratio is controlled within a condition range, thereby being beneficial to reducing the sensitivity of the system; and the proper ratio is advantageous for correcting field curvature and distortion of the system.
In an exemplary embodiment, the effective focal length f of the optical imaging lens set and the curvature radius R2 of the image side surface of the first lens may satisfy: 0<f/R2<1, more specifically, 0.07.ltoreq.f/R2.ltoreq.0.48 may be further satisfied. By controlling the image side surface of the first lens to be concave, the convenience of processing the lens on the plate glass is improved, and the f/R2 ratio is controlled in a smaller range, so that the processing technical difficulty and the processing cost can be reduced.
In an exemplary embodiment, the curvature radius R6 of the image side of the third lens and the curvature radius R3 of the object side of the second lens may satisfy: 1< R6/R3<1.5, more specifically, 1.17.ltoreq.R6/R3.ltoreq.1.45 may be further satisfied. The second lens is a positive lens, the radius of curvature of R3 is positive, light is collected, but larger spherical aberration is brought, R6 is an image side concave surface of the third negative lens, the spherical aberration brought by R3 can be balanced, the spherical aberration of the system can be effectively balanced by controlling the ratio of R6 to R3 in a smaller range, and better image quality is obtained.
In an exemplary embodiment, a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.5< CT4/CT3<1.5, more specifically, 0.93.ltoreq.CT4/CT 3.ltoreq.1.37 may be further satisfied. The central thickness of the lens influences the focal power, and the central thickness ratio of the fourth lens to the third lens can be controlled to improve the matching condition of the focal power, reduce the refraction angle of light rays, reduce the sensitivity of the system and facilitate the assembly of the system.
In an exemplary embodiment, the air space T12 between the first lens element and the second lens element on the optical axis and the distance TTL between the object side surface of the first lens element and the imaging surface of the optical image lens group on the optical axis may satisfy: 0.1< (T12×2)/TTL <0.8, more specifically, 0.16.ltoreq.T12×2)/TTL.ltoreq.0.60 may be further satisfied. The value of T12 is sensitive to the field curvature of the system, and has a large effect on field curvature optimization; the first lens of the optical system is an independent component in assembly, and the ratio of (T12 x 2)/TTL is controlled in a proper range, so that the system field curvature adjustment and the system total length control are facilitated.
In an exemplary embodiment, a distance TTL between the object side surface of the first lens element and the imaging surface of the optical image lens assembly on the optical axis and a center thickness CT5 of the fifth lens element may satisfy: 1.3< CT5/TTL 10<2.6, more specifically, 1.34.ltoreq.CT 5/TTL 10.ltoreq.2.5 can be further satisfied. The fifth lens has the strongest light condensing capability, and the ratio is controlled within a reasonable range, so that the system distortion and astigmatism can be corrected.
In an exemplary embodiment, the maximum half field angle HFOV of the optical imaging lens assembly may satisfy the condition: tan (HFOV) >0.8, more specifically, tan (HFOV) > 0.87 may be further satisfied. By satisfying this condition, the system can effectively increase the angle of view while ensuring a more qualitative condition, and is advantageous in achieving miniaturization of the lens.
In an exemplary embodiment, the first lens may be made of a glass material. The first lens of the optical system is lens protection glass, and the glass material has stronger wear resistance than optical plastic, so that the image quality is not damaged due to lens wear; the object side surface is a plane, so that the processing is convenient, and the damage probability of the first lens in the optical effective range can be reduced.
In an exemplary embodiment, the optical imaging lens group may further be provided with an aperture STO for restricting the light beam, adjusting the amount of light entering, and improving the imaging quality.
Optionally, the optical imaging lens set may further include a protective glass for protecting the photosensitive element located on the imaging surface.
The optical imaging lens set according to the above embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the aperture of the optical image lens group can be effectively enlarged, the miniaturization of the lens is ensured, the imaging quality is improved, and therefore, the optical image lens group is more beneficial to production and processing and is applicable to portable electronic products.
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 to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, has advantages of improving distortion aberration and improving astigmatic aberration, and can make the field of view larger and more realistic. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. In addition, the use of aspherical lenses can also effectively reduce the number of lenses in the optical system.
Therefore, according to the optical imaging lens assembly of the embodiment of the present application, the front plate protection glass is a lens with optical power, so that the lens is converted from a traditional 5-piece lens to a 6-piece lens. The present application provides for an increase in the number of lenses without increasing the overall length of the system, while having a better imaging level. Meanwhile, the system has a larger field angle and a large aperture, and provides a new direction for the development trend of wide angle and small large aperture of the mobile phone lens.
However, those skilled in the art will appreciate that the number of lenses making up a lens barrel 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 image lens group is not limited to including six lenses. The optical imaging lens assembly may also include other numbers of lenses, if desired.
Specific examples of optical imaging lens assemblies applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens set according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D.
Fig. 1 shows a schematic structural diagram of an optical imaging lens assembly according to embodiment 1 of the present application. As shown in fig. 1, the optical imaging lens assembly includes six lenses E1-E6 arranged in order from an object side to an imaging side along an optical axis. The first lens E1 has an object side surface S1 and an image side surface S2; the second lens E2 has an object side surface S3 and an image side surface S4; the third lens element E3 has an object-side surface S5 and an image-side surface S6; the fourth lens element E4 has an object-side surface S7 and an image-side surface S8; the fifth lens element E5 has an object-side surface S9 and an image-side surface S10; and the sixth lens E6 has an object side surface S11 and an image side surface S12.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has positive optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
In the optical imaging lens group of the present embodiment, an aperture stop provided between the first lens E1 and the second lens E2 for restricting the light beam is further included. The optical imaging lens set according to embodiment 1 may include a filter E7 having an object side surface S13 and an image side surface S14, and the filter E7 may be used to correct color deviation. 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, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 1.
TABLE 1
In the embodiment, six lenses are taken as an example, and the aperture of the lens is effectively enlarged by reasonably distributing the focal length and the surface shape of each lens and selecting proper materials, so that the large aperture and the miniaturization of the lens are ensured; meanwhile, various aberrations are corrected, and the resolution and imaging quality of the lens are improved. Each aspherical surface profile x is defined by the following formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1 above); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A for each of the mirrors S3-S12 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 8.1050E-03 | -5.8520E-02 | 3.0332E-01 | -9.3690E-01 | 1.7678E+00 | -2.0697E+00 | 1.4494E+00 | -5.5245E-01 | 8.5918E-02 |
| S4 | 4.5857E-02 | 1.6914E-02 | -3.1405E-01 | 5.9697E-01 | -4.4094E-01 | -2.6200E-01 | 6.8695E-01 | -4.3622E-01 | 9.3703E-02 |
| S5 | -7.3800E-03 | 1.1635E-01 | -3.5744E-01 | 3.9404E-01 | 9.9720E-02 | -8.5036E-01 | 9.5577E-01 | -4.2830E-01 | 6.3337E-02 |
| S6 | -1.5913E-01 | 3.0745E-01 | -8.8861E-01 | 2.3031E+00 | -4.5096E+00 | 6.0215E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -1.1311E-01 | -4.2300E-02 | -1.5710E-02 | 2.4816E-02 | -1.4000E-03 | 1.3600E-06 | 4.4100E-06 | -8.1000E-08 | -9.4000E-08 |
| S8 | -6.8260E-02 | -1.4860E-02 | -2.8500E-03 | 1.1845E-02 | -3.0900E-03 | 4.1600E-04 | -3.3000E-07 | -2.1000E-07 | -7.8000E-08 |
| S9 | 4.2106E-02 | -2.2200E-03 | 2.7142E-02 | -1.3770E-02 | 1.7050E-03 | 1.6800E-04 | 8.7200E-05 | 2.9600E-07 | 1.3900E-07 |
| S10 | 1.3266E-02 | -4.6850E-02 | 1.7014E-02 | 8.5970E-03 | -3.4500E-03 | 3.2100E-06 | 4.0700E-06 | 2.1100E-06 | 1.2900E-06 |
| S11 | -9.4260E-02 | 8.3420E-03 | 3.4050E-03 | -4.0000E-04 | -2.1000E-05 | -6.8000E-08 | 5.8900E-08 | 2.2400E-08 | 6.9700E-09 |
| S12 | -6.8830E-02 | 1.8648E-02 | -3.4800E-03 | 2.4400E-04 | -8.4000E-07 | -5.1000E-08 | -1.7000E-09 | 3.0800E-10 | -1.7000E-10 |
Table 3 below shows the effective focal lengths f1 to f6 of the lenses of example 1, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group (i.e., the optical total length of the optical image lens group), the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group.
TABLE 3 Table 3
| f1(mm) | -26.98 | f(mm) | 3.08 |
| f2(mm) | 2.58 | TTL(mm) | 5.42 |
| f3(mm) | -5.17 | HFOV(°) | 41.3 |
| f4(mm) | 59.15 | Fno | 1.70 |
| f5(mm) | 2.24 | ||
| f6(mm) | -2.57 |
In this example, in combination with tables 1 and 3 above:
the effective focal length f1 of the first lens E1 and the effective focal length f of the optical image set satisfy f1/f= -8.76;
the distance TTL between the object side surface S1 of the first lens element E1 and the imaging surface S15 of the optical image lens assembly on the optical axis and the center thickness CT5 of the fifth lens element E5 satisfy CT5/TTL by 10=1.62;
an air interval T45 on the optical axis of the fourth lens E4 and the fifth lens E5 and an air interval T34 on the optical axis of the third lens E3 and the fourth lens E4 satisfy t45/t34=0.30;
the effective focal length f of the optical image lens assembly and the effective focal length f2 of the second lens E2 satisfy: ff2=1.19;
the effective focal length f of the optical image lens assembly and the effective focal length f3 of the third lens E3 meet the requirement of f3/f= -1.68;
the effective focal length f of the optical image lens assembly and the effective focal length f5 of the fifth lens element E5 satisfy f5=1.37;
the effective focal length f of the optical image lens assembly and the effective focal length f6 of the sixth lens E6 meet f/f6= -1.2;
the effective focal length f of the optical image lens assembly and the curvature radius R2 of the image-side surface S2 of the first lens element E1 satisfy fr2=0.22;
the radius of curvature R6 of the image side surface S6 of the third lens element E3 and the radius of curvature R3 of the object side surface S3 of the second lens element E2 satisfy r6/r3=1.30;
The center thickness CT3 of the third lens E3 on the optical axis and the center thickness CT4 of the fourth lens E4 on the optical axis satisfy CT4/CT3 = 1.36;
the air space T12 between the first lens element E1 and the second lens element E2 on the optical axis and the distance TTL between the object side surface S1 of the first lens element E1 and the imaging surface S15 of the optical image lens assembly on the optical axis satisfy (t12×2)/ttl=0.16; and
the maximum half field angle HFOV of the optical image lens set satisfies the condition tan (HFOV) =0.88.
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens set of embodiment 1, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 2B shows an astigmatism curve of the optical imaging lens group 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 set of embodiment 1, which represents distortion magnitude values at different viewing angles. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 1, which represents the deviation of different image heights of light rays on the imaging plane after passing through the optical imaging lens set. As can be seen from fig. 2A to 2D, the optical imaging lens set of embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens set according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. The optical imaging lens set described in this embodiment 2 and the following embodiments is identical to the arrangement structure of the optical imaging lens set described in embodiment 1 except for parameters of each lens of the optical imaging lens set, for example, the radius of curvature, thickness, conic coefficient, effective focal length, on-axis distance, higher order coefficient of each lens, and the like of each lens. For brevity, descriptions of portions similar to those of embodiment 1 will be omitted.
Fig. 3 shows a schematic structural diagram of an optical imaging lens set according to embodiment 2 of the present application. As shown in fig. 3, the optical imaging lens group according to embodiment 2 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has negative optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 4 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 2. Table 5 shows the higher order coefficients of the aspherical mirror surfaces in example 2. Table 6 shows the effective focal lengths f1 to f6 of the lenses of example 2, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 4 Table 4
TABLE 5
TABLE 6
| f1(mm) | -12.75 | f(mm) | 2.88 |
| f2(mm) | 2.41 | TTL(mm) | 5.45 |
| f3(mm) | -6.25 | HFOV(°) | 42.0 |
| f4(mm) | -9.28 | Fno | 1.70 |
| f5(mm) | 1.97 | ||
| f6(mm) | -2.99 |
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens set of embodiment 2, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 4B shows an astigmatism curve of the optical imaging lens group 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 set of example 2, which represents the magnitude of distortion at different viewing angles. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 2, which represents the deviation of different image heights of light rays on the imaging plane after passing through the optical imaging lens set. As can be seen from fig. 4A to 4D, the optical imaging lens set of embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens set 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 set according to embodiment 3 of the present application. As shown in fig. 5, the optical imaging lens group according to embodiment 3 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has negative optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 7 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 3. Table 8 shows the higher order coefficients of the aspherical mirror surfaces in example 3. Table 9 shows the effective focal lengths f1 to f6 of the respective lenses of example 3, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 7
TABLE 8
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 1.3916E-02 | -5.1910E-02 | 3.0609E-01 | -9.3261E-01 | 1.7691E+00 | -2.0793E+00 | 1.4494E+00 | -5.5247E-01 | 8.5910E-02 |
| S4 | 7.0929E-02 | 2.4991E-02 | -3.1592E-01 | 6.0008E-01 | -4.4107E-01 | -2.8076E-01 | 6.8695E-01 | -4.3621E-01 | 9.3691E-02 |
| S5 | -6.7400E-03 | 1.1170E-01 | -3.6100E-01 | 3.8521E-01 | 9.1265E-02 | -8.4625E-01 | 9.5577E-01 | -4.2831E-01 | 6.3323E-02 |
| S6 | -1.7514E-01 | 3.0360E-01 | -8.9003E-01 | 2.2952E+00 | -4.5121E+00 | 6.0328E+00 | -5.1161E+00 | 2.4763E+00 | -5.1339E-01 |
| S7 | -2.2934E-01 | 2.0980E-02 | -5.8850E-02 | -3.2130E-02 | 2.2711E-02 | 5.1500E-04 | 7.0200E-04 | -4.9000E-05 | -8.6000E-05 |
| S8 | -8.1810E-02 | 9.2700E-04 | 1.9440E-03 | 1.0359E-02 | -4.8700E-03 | -1.7000E-05 | 2.4800E-04 | -4.1000E-05 | 4.4900E-05 |
| S9 | 8.4690E-03 | -1.8370E-02 | 2.5187E-02 | -1.2810E-02 | 2.2190E-03 | 2.6100E-04 | 2.4000E-05 | -4.0000E-05 | 3.0100E-06 |
| S10 | 1.2762E-02 | -5.2510E-02 | 1.0522E-02 | 7.0060E-03 | -3.3700E-03 | 1.9400E-04 | 8.5400E-05 | 2.3100E-05 | 1.3500E-06 |
| S11 | -1.0689E-01 | 9.3620E-03 | 2.8620E-03 | -6.8000E-04 | -4.7000E-05 | 8.1100E-06 | 2.9700E-06 | 5.5100E-07 | -1.4000E-07 |
| S12 | -8.5320E-02 | 2.8580E-02 | -5.8400E-03 | 4.4800E-04 | 1.7200E-05 | -1.4000E-06 | -3.3000E-07 | -2.2000E-08 | 5.2000E-09 |
TABLE 9
| f1(mm) | -11.59 | f(mm) | 2.87 |
| f2(mm) | 2.65 | TTL(mm) | 5.51 |
| f3(mm) | -8.09 | HFOV(°) | 42.0 |
| f4(mm) | -7.85 | Fno | 1.70 |
| f5(mm) | 1.75 | ||
| f6(mm) | -2.52 |
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens set of embodiment 3, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 6B shows an astigmatism curve of the optical imaging lens group 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 set of example 3, which represents the magnitude of distortion at different viewing angles. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens set. As can be seen from fig. 6A to 6D, the optical imaging lens set of embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens set 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 set according to embodiment 4 of the present application. As shown in fig. 7, the optical imaging lens group according to embodiment 4 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has negative optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 10 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 4. Table 11 shows the higher order coefficients of the aspherical mirror surfaces in example 4. Table 12 shows the effective focal lengths f1 to f6 of the lenses of example 4, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
Table 10
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 9.5380E-03 | -4.3480E-02 | 2.8446E-01 | -9.3778E-01 | 1.7940E+00 | -2.0667E+00 | 1.4291E+00 | -5.5248E-01 | 8.6164E-02 |
| S4 | 5.9710E-02 | 3.6120E-02 | -3.0945E-01 | 5.8564E-01 | -4.2687E-01 | -2.6686E-01 | 6.6936E-01 | -4.3619E-01 | 9.3397E-02 |
| S5 | 1.1096E-02 | 1.0439E-01 | -3.4056E-01 | 4.0693E-01 | 8.1602E-02 | -8.5665E-01 | 9.5567E-01 | -4.2825E-01 | 6.3338E-02 |
| S6 | -1.8874E-01 | 3.4983E-01 | -9.0393E-01 | 2.3015E+00 | -4.5145E+00 | 6.0348E+00 | -5.1162E+00 | 2.4760E+00 | -5.1332E-01 |
| S7 | -2.5893E-01 | 1.8239E-02 | -3.3220E-02 | -7.1150E-02 | 5.1331E-02 | 4.3100E-04 | 7.4200E-04 | -2.8000E-04 | -1.6000E-05 |
| S8 | -9.6470E-02 | -8.6800E-03 | 9.2500E-04 | 9.8860E-03 | -5.6000E-03 | 3.5600E-04 | 1.3020E-03 | 2.4300E-04 | -2.5000E-04 |
| S9 | 7.9600E-04 | -1.1350E-02 | 2.5304E-02 | -1.2940E-02 | 2.2200E-03 | 2.6700E-04 | 2.3200E-05 | -3.9000E-05 | 1.0600E-06 |
| S10 | 3.0486E-02 | -5.1800E-02 | 9.4450E-03 | 7.4680E-03 | -2.9700E-03 | 3.0400E-04 | 9.2100E-05 | 1.0800E-05 | -1.0000E-05 |
| S11 | -1.0085E-01 | 1.4116E-02 | 2.6600E-03 | -8.1000E-04 | -3.9000E-05 | 1.1000E-05 | 2.1400E-06 | 1.6700E-07 | -5.7000E-08 |
| S12 | -8.3860E-02 | 2.8916E-02 | -6.2700E-03 | 4.7200E-04 | 1.5200E-05 | -1.8000E-06 | -2.4000E-07 | 1.1400E-09 | 2.9500E-09 |
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens set of example 4, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 8B shows an astigmatism curve of the optical imaging lens group 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 set of example 4, which represents the magnitude of distortion at different viewing angles. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 4, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens set. As can be seen from fig. 8A to 8D, the optical imaging lens set of embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens set 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 set according to embodiment 5 of the present application. As shown in fig. 9, the optical imaging lens group according to embodiment 5 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has positive optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 13 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 5. Table 14 shows the higher order coefficients of the aspherical mirror surfaces in example 5. Table 15 shows the effective focal lengths f1 to f6 of the respective lenses of example 5, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 13
TABLE 14
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 8.1050E-03 | -5.8520E-02 | 3.0332E-01 | -9.3690E-01 | 1.7678E+00 | -2.0697E+00 | 1.4494E+00 | -5.5245E-01 | 8.5918E-02 |
| S4 | 4.5857E-02 | 1.6914E-02 | -3.1405E-01 | 5.9697E-01 | -4.4094E-01 | -2.6200E-01 | 6.8695E-01 | -4.3622E-01 | 9.3703E-02 |
| S5 | -7.3800E-03 | 1.1635E-01 | -3.5744E-01 | 3.9404E-01 | 9.9720E-02 | -8.5036E-01 | 9.5577E-01 | -4.2830E-01 | 6.3337E-02 |
| S6 | -1.5913E-01 | 3.0745E-01 | -8.8861E-01 | 2.3031E+00 | -4.5096E+00 | 6.0215E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -1.1544E-01 | -4.3440E-02 | -1.5400E-02 | 2.5441E-02 | -1.3000E-03 | 3.6500E-04 | 3.8300E-04 | 2.3100E-04 | 3.7500E-05 |
| S8 | -5.7540E-02 | -1.5000E-02 | -2.9300E-03 | 1.1951E-02 | -3.0700E-03 | 4.3500E-04 | 2.6800E-05 | -1.9000E-05 | -8.0000E-06 |
| S9 | 4.4507E-02 | -1.4330E-02 | 2.1062E-02 | -1.1820E-02 | 4.4000E-03 | -9.0000E-04 | -4.6000E-05 | 3.7900E-07 | 1.2400E-05 |
| S10 | 7.3011E-02 | -2.6730E-02 | -1.4780E-02 | 1.6706E-02 | -3.4500E-03 | -4.8000E-07 | 1.8200E-06 | 1.0400E-06 | 7.9900E-07 |
| S11 | -9.5290E-02 | 8.1580E-03 | 3.4090E-03 | -4.0000E-04 | -2.1000E-05 | 2.4700E-07 | 1.6900E-07 | 4.4400E-08 | -2.5000E-09 |
| S12 | -6.7670E-02 | 1.8840E-02 | -3.5000E-03 | 2.3800E-04 | -2.0000E-07 | 1.9200E-07 | 1.6500E-08 | 3.5600E-09 | -1.5000E-09 |
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens set of example 5, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 10B shows an astigmatism curve of the optical imaging lens group 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 set of example 5, which represents the magnitude of distortion at different viewing angles. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 5, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens set. As can be seen from fig. 10A to 10D, the optical imaging lens set of embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens set 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 set according to embodiment 6 of the present application. As shown in fig. 11, the optical imaging lens group according to embodiment 6 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has positive optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 16 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 6. Table 17 shows the higher order coefficients of the aspherical mirror surfaces in example 6. Table 18 shows the effective focal lengths f1 to f6 of the lenses of example 6, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
Table 16
TABLE 17
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 8.2480E-03 | -5.8430E-02 | 3.0336E-01 | -9.3688E-01 | 1.7678E+00 | -2.0697E+00 | 1.4494E+00 | -5.5245E-01 | 8.5918E-02 |
| S4 | 4.5805E-02 | 1.6874E-02 | -3.1405E-01 | 5.9701E-01 | -4.4094E-01 | -2.6200E-01 | 6.8695E-01 | -4.3622E-01 | 9.3703E-02 |
| S5 | -7.3600E-03 | 1.1639E-01 | -3.5742E-01 | 3.9401E-01 | 9.9720E-02 | -8.5036E-01 | 9.5577E-01 | -4.2830E-01 | 6.3337E-02 |
| S6 | -1.5910E-01 | 3.0738E-01 | -8.8868E-01 | 2.3031E+00 | -4.5096E+00 | 6.0215E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -1.1546E-01 | -4.3660E-02 | -1.5420E-02 | 2.5535E-02 | -1.3000E-03 | 3.6500E-04 | 3.8300E-04 | 2.3100E-04 | 3.7500E-05 |
| S8 | -5.7750E-02 | -1.4910E-02 | -2.9100E-03 | 1.1944E-02 | -3.0700E-03 | 4.3500E-04 | 2.6800E-05 | -1.9000E-05 | -8.0000E-06 |
| S9 | 4.5653E-02 | -1.5150E-02 | 2.0975E-02 | -1.1780E-02 | 4.4100E-03 | -9.1000E-04 | -4.8000E-05 | 4.1700E-07 | 1.2400E-05 |
| S10 | 7.3103E-02 | -2.6480E-02 | -1.4810E-02 | 1.6705E-02 | -3.4500E-03 | -6.2000E-08 | 1.8200E-06 | 1.0400E-06 | 8.0400E-07 |
| S11 | -9.5270E-02 | 8.1490E-03 | 3.4070E-03 | -4.0000E-04 | -2.1000E-05 | 2.5000E-07 | 1.7000E-07 | 4.4900E-08 | -2.4000E-09 |
| S12 | -6.7870E-02 | 1.8811E-02 | -3.5000E-03 | 2.3800E-04 | -2.0000E-07 | 1.9400E-07 | 1.7000E-08 | 3.6300E-09 | -1.5000E-09 |
TABLE 18
| f1(mm) | -28.14 | f(mm) | 3.02 |
| f2(mm) | 2.57 | TTL(mm) | 6.15 |
| f3(mm) | -5.10 | HFOV(°) | 41.0 |
| f4(mm) | 99.78 | Fno | 1.70 |
| f5(mm) | 2.58 | ||
| f6(mm) | -3.21 |
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens set of example 6, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 12B shows an astigmatism curve of the optical imaging lens group of example 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens set of example 6, which represents the magnitude of distortion at different viewing angles. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens set. As can be seen from fig. 12A to 12D, the optical imaging lens set of embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens set 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 set according to embodiment 7 of the present application. As shown in fig. 13, the optical imaging lens group according to embodiment 7 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has negative optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 19 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 7. Table 20 shows the higher order coefficients of the aspherical mirror surfaces in example 7. Table 21 shows the effective focal lengths f1 to f6 of the respective lenses of example 7, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 19
Table 20
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 1.3495E-02 | -4.5960E-02 | 2.9809E-01 | -9.3089E-01 | 1.7770E+00 | -2.0714E+00 | 1.4463E+00 | -5.5245E-01 | 8.5908E-02 |
| S4 | 7.8459E-02 | 2.7531E-02 | -3.0292E-01 | 6.0533E-01 | -4.3930E-01 | -2.6963E-01 | 6.7759E-01 | -4.3624E-01 | 9.3660E-02 |
| S5 | 2.6962E-02 | 1.0749E-01 | -3.5633E-01 | 4.1429E-01 | 1.0568E-01 | -8.8382E-01 | 9.5577E-01 | -4.2831E-01 | 6.3287E-02 |
| S6 | -1.7082E-01 | 3.0715E-01 | -8.7811E-01 | 2.2933E+00 | -4.5163E+00 | 6.0319E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -1.7595E-01 | -5.7530E-02 | -1.8900E-03 | 9.9390E-03 | -2.1610E-02 | 3.7050E-02 | 3.6400E-04 | 1.7000E-04 | 3.7500E-05 |
| S8 | -1.1252E-01 | 3.7510E-03 | 3.5300E-03 | 1.0095E-02 | -4.2800E-03 | 4.8300E-04 | 3.1100E-04 | 1.4400E-04 | -9.5000E-05 |
| S9 | 1.7428E-02 | -1.2870E-02 | 1.8884E-02 | -1.2370E-02 | 4.4860E-03 | -7.4000E-04 | 2.4200E-05 | 2.3200E-05 | -4.0000E-06 |
| S10 | 7.1220E-02 | -3.7350E-02 | -6.5900E-03 | 1.6317E-02 | -4.0400E-03 | -1.4000E-04 | 6.6000E-06 | 2.3700E-05 | 1.4100E-05 |
| S11 | -1.4479E-01 | 3.3205E-02 | -1.7400E-03 | -1.0800E-03 | 1.9400E-05 | 4.6100E-05 | 8.6300E-06 | -1.3000E-06 | -1.5000E-07 |
| S12 | -8.7340E-02 | 3.0167E-02 | -6.2800E-03 | 4.1100E-04 | 2.7800E-05 | -9.5000E-08 | -3.7000E-07 | -3.6000E-08 | 3.9700E-09 |
Table 21
| f1(mm) | -32.67 | f(mm) | 3.08 |
| f2(mm) | 2.62 | TTL(mm) | 6.50 |
| f3(mm) | -4.90 | HFOV(°) | 41.0 |
| f4(mm) | -12.22 | Fno | 1.70 |
| f5(mm) | 2.07 | ||
| f6(mm) | -2.46 |
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens set of example 7, which indicates the convergent focus deviation of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 14B shows an astigmatism curve of the optical imaging lens group 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 set of example 7, which represents the magnitude of distortion at different viewing angles. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens set. As can be seen from fig. 14A to 14D, the optical imaging lens set of embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens set 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 set according to embodiment 8 of the present application. As shown in fig. 15, the optical imaging lens group according to embodiment 8 includes first to sixth lenses E1 to E6 having an object side surface and an image side surface, respectively.
In this embodiment, the first lens E1 has negative optical power, and its object-side surface S1 is a plane; the second lens E2 has positive optical power; the third lens E3 has negative optical power; the fourth lens E4 has negative optical power; the fifth lens E5 has positive optical power; and the sixth lens E6 has negative optical power.
Table 22 below shows the surface types, radii of curvature, thicknesses, materials, and conic coefficients of the respective lenses of the optical imaging lens group of example 8. Table 23 shows the higher order coefficients of the aspherical mirror surfaces in example 8. Table 24 shows the effective focal lengths f1 to f6 of the respective lenses of example 8, the effective focal length f of the optical image lens group, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15 of the optical image lens group, the maximum half field angle HFOV of the optical image lens group, and the f-number Fno of the optical image lens group. Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.
Table 22
Table 23
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S3 | 1.6362E-02 | -4.3520E-02 | 2.9767E-01 | -9.3336E-01 | 1.7756E+00 | -2.0681E+00 | 1.4403E+00 | -5.5245E-01 | 8.5908E-02 |
| S4 | 7.3280E-02 | 3.7797E-02 | -3.1514E-01 | 5.8802E-01 | -4.5068E-01 | -2.6810E-01 | 6.7819E-01 | -4.3624E-01 | 9.3660E-02 |
| S5 | 2.8859E-02 | 1.1289E-01 | -3.5873E-01 | 3.9819E-01 | 9.1011E-02 | -8.8060E-01 | 9.5577E-01 | -4.2831E-01 | 6.3287E-02 |
| S6 | -1.4653E-01 | 2.7892E-01 | -8.7583E-01 | 2.3026E+00 | -4.5161E+00 | 6.0243E+00 | -5.1161E+00 | 2.4763E+00 | -5.1332E-01 |
| S7 | -1.7478E-01 | -4.2820E-02 | -2.3950E-02 | -3.5800E-03 | -1.3240E-02 | 5.3523E-02 | 3.6400E-04 | 1.7000E-04 | 3.7500E-05 |
| S8 | -8.2150E-02 | -9.0500E-03 | 3.5280E-03 | 1.3572E-02 | -3.1200E-03 | 1.0400E-04 | -2.7000E-04 | -6.5000E-05 | 1.0600E-04 |
| S9 | 3.1575E-02 | -1.9650E-02 | 1.7927E-02 | -1.2250E-02 | 4.5870E-03 | -7.3000E-04 | 3.5300E-06 | 1.1600E-05 | -2.3000E-06 |
| S10 | 6.3609E-02 | -3.4340E-02 | -8.9900E-03 | 1.6335E-02 | -3.9800E-03 | -1.5000E-04 | -4.9000E-06 | 1.7300E-05 | 1.1800E-05 |
| S11 | -1.9059E-01 | 4.2555E-02 | -1.6300E-03 | -1.1400E-03 | -4.8000E-05 | 2.7800E-05 | 1.1300E-05 | 1.1500E-06 | -6.1000E-07 |
| S12 | -8.1500E-02 | 2.6114E-02 | -4.9300E-03 | 3.1000E-04 | 1.1600E-05 | 3.3600E-08 | -1.4000E-07 | -1.1000E-08 | -3.2000E-10 |
Table 24
| f1(mm) | -87.01 | f(mm) | 3.08 |
| f2(mm) | 3.12 | TTL(mm) | 6.53 |
| f3(mm) | -6.95 | HFOV(°) | 41.0 |
| f4(mm) | -14.08 | Fno | 1.70 |
| f5(mm) | 2.08 | ||
| f6(mm) | -2.59 |
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens set of example 8, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens set. Fig. 16B shows an astigmatism curve of the optical imaging lens group 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 set of example 8, which represents the magnitude of distortion at different viewing angles. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens set of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens set. As can be seen from fig. 16A to 16D, the optical imaging lens set of embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 25 below.
Table 25
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| f1/f | -8.76 | -4.43 | -4.03 | -12.02 | -9.24 | -9.32 | -10.61 | -28.25 |
| f/f5 | 1.37 | 1.46 | 1.64 | 1.48 | 1.17 | 1.17 | 1.49 | 1.48 |
| f/f2 | 1.19 | 1.20 | 1.08 | 1.31 | 1.19 | 1.18 | 1.17 | 0.99 |
| f3/f | -1.68 | -2.17 | -2.82 | -1.23 | -1.64 | -1.69 | -1.59 | -2.26 |
| f/f6 | -1.20 | -0.96 | -1.14 | -1.03 | -0.95 | -0.94 | -1.25 | -1.19 |
| tan(HFOV) | 0.88 | 0.90 | 0.90 | 0.87 | 0.87 | 0.87 | 0.87 | 0.87 |
| f/R2 | 0.22 | 0.44 | 0.48 | 0.16 | 0.21 | 0.21 | 0.18 | 0.07 |
| R6/R3 | 1.30 | 1.29 | 1.36 | 1.45 | 1.30 | 1.30 | 1.21 | 1.17 |
| CT4/CT3 | 1.36 | 1.00 | 1.25 | 0.93 | 1.37 | 1.37 | 1.00 | 1.00 |
| CT5/ |
1.62 | 1.83 | 2.50 | 1.34 | 1.39 | 1.37 | 1.82 | 1.92 |
| T45/T34 | 0.30 | 0.32 | 0.12 | 0.51 | 0.33 | 0.33 | 0.12 | 0.14 |
| (T12*2)/TTL | 0.16 | 0.17 | 0.17 | 0.60 | 0.20 | 0.21 | 0.52 | 0.52 |
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 image lens assembly 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,
it is characterized in that the method comprises the steps of,
the first lens has negative focal power, and the object side surface of the first lens is a plane;
the second lens has positive optical power;
the third lens has negative focal power;
the fifth lens has positive optical power;
the sixth lens has negative focal power;
the effective focal length f of the optical image lens assembly and the effective focal length f5 of the fifth lens satisfy the following conditions: 1<f/f5<3;
the number of lenses with focal power in the optical image lens group is six; and
the effective focal length f1 of the first lens and the effective focal length f of the optical image set satisfy: -30< f1/f < -3.
2. The optical imaging lens assembly of claim 1, wherein an effective focal length f of the optical imaging lens assembly and an effective focal length f2 of the second lens satisfy: 0.5< f/f2<1.5.
3. The optical imaging lens set according to claim 1, wherein an air space T45 of the fourth lens and the fifth lens on the optical axis and an air space T34 of the third lens and the fourth lens on the optical axis satisfy: 0.1< T45/T34<0.6.
4. The optical imaging lens assembly of any of claims 1-3, wherein an effective focal length f of the optical imaging lens assembly and an effective focal length f3 of the third lens satisfy: -3< f3/f < -1.
5. The optical imaging lens assembly of any of claims 1-3, wherein an effective focal length f of the optical imaging lens assembly and an effective focal length f6 of the sixth lens satisfy: -1.5< f/f6< -0.5.
6. The optical imaging lens set according to any one of claims 1-3, wherein an effective focal length f of the optical imaging lens set and a radius of curvature R2 of an image side surface of the first lens satisfy: 0<f/R2<1.
7. The optical imaging lens assembly according to any one of claims 1-3, wherein a radius of curvature R6 of an image side of the third lens element and a radius of curvature R3 of an object side of the second lens element satisfy: 1< R6/R3<1.5.
8. The optical imaging lens assembly according to any one of claims 1-3, wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy: 0.5< CT4/CT3<1.5.
9. The optical imaging lens assembly according to any one of claims 1-3, wherein an air space T12 between the first lens element and the second lens element on the optical axis and a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens assembly on the optical axis satisfy: 0.1< (T12×2)/TTL <0.8.
10. The optical imaging lens assembly according to any one of claims 1-3, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens assembly on the optical axis and a center thickness CT5 of the fifth lens element satisfy: 1.3< CT5/TTL 10<2.6.
11. The optical imaging lens assembly of any of claims 1-3, wherein a maximum half field angle HFOV of the optical imaging lens assembly satisfies the condition: tan (HFOV) >0.8.
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| CN201810471501.6A CN108459397B (en) | 2018-05-17 | 2018-05-17 | Optical image lens assembly |
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| CN111316151B (en) * | 2019-01-30 | 2022-07-15 | 深圳市大疆创新科技有限公司 | Imaging lens, imaging device and electronic equipment |
| WO2021127883A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Optical camera lens |
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| CN208399790U (en) * | 2018-05-17 | 2019-01-18 | 浙江舜宇光学有限公司 | Optical image microscope group |
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