CN106896481B - Imaging lens - Google Patents
Imaging lens Download PDFInfo
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- CN106896481B CN106896481B CN201710253905.3A CN201710253905A CN106896481B CN 106896481 B CN106896481 B CN 106896481B CN 201710253905 A CN201710253905 A CN 201710253905A CN 106896481 B CN106896481 B CN 106896481B
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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
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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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
Abstract
The application discloses imaging lens. The imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side, wherein f/EPD (pupil entry diameter) between an effective focal length f of the imaging lens and an entry pupil diameter EPD of the imaging lens is less than or equal to 1.8, and an incident angle CRA4 of a chief ray corresponding to a maximum field of view incident on an object side surface of the fourth lens is less than 15 degrees. The imaging lens comprises 5 lenses, and can realize the imaging lens with ultrathin large aperture and good imaging quality.
Description
Technical Field
The invention relates to an imaging lens, in particular to a small imaging lens consisting of five lenses.
Background
With the performance improvement and size reduction of CCD (charge-coupled device) and CMOS (complementary metal-oxide semiconductor) image sensors, the corresponding camera lens also meets the requirements of high imaging quality and miniaturization.
In order to meet the requirement of miniaturization, the F number of the conventional lens is generally configured to be 2.0 or more than 2.0, so that the size reduction of the lens is realized and the lens has good optical performance. However, with the continuous development of portable electronic products such as smartphones, higher requirements are put forward on imaging lenses, especially for situations of insufficient light (such as overcast and rainy days, dusk, etc.) and shaking hands, so that the F number of 2.0 or more than 2.0 cannot meet higher-order imaging requirements.
Therefore, the invention provides an optical system which is applicable to portable electronic products, has ultrathin large aperture and good imaging quality.
Disclosure of Invention
To solve at least some of the problems in the prior art, the present invention provides an imaging lens.
One aspect of the present invention provides an imaging lens, which includes, in order from an object side to an image side of the imaging lens, a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element; wherein, f/EPD is less than or equal to 1.8 between the effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens, and the incident angle CRA4 of the chief ray corresponding to the maximum view field incident on the object side surface of the fourth lens is less than 15 °
Another aspect of the present invention provides an imaging lens including, in order from an object side to an image side of the imaging lens, a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has negative focal power; the third lens has positive focal power or negative focal power; the fourth lens has positive focal power or negative focal power; the fifth lens has a negative power. The effective focal length f of the imaging lens and the combined focal length f12 of the first lens and the second lens satisfy f/f12<1.0 and are more than or equal to 0.7.
According to one embodiment of the invention, 0.5< R2/R3<2.0, R2 is the radius of curvature of the image-side surface of the first lens and R3 is the radius of curvature of the object-side surface of the second lens.
According to one embodiment of the invention, 4.0< f1/CT1<6.0, f1 is the effective focal length of the first lens, and CT1 is the center thickness of the first lens.
According to one embodiment of the invention, 5.5< f/CT4<7.0, f being the effective focal length of the imaging lens, CT4 being the center thickness of the fourth lens.
According to one embodiment of the invention, f/f1 is more than or equal to 1.0 and less than or equal to 1.5, wherein f is the effective focal length of the imaging lens, and f1 is the effective focal length of the first lens.
According to one embodiment of the present invention, -1.0< f/f2< -0.3, f being the effective focal length of the imaging lens, f2 being the effective focal length of the second lens.
According to one embodiment of the present invention, -2.0< f/f5< -0.7, f being an effective focal length of the imaging lens, and f5 being an effective focal length of the fifth lens.
According to one embodiment of the invention, R1/R2<0.5, R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens.
According to one embodiment of the invention, 1.0< f/R4<2.0, f is an effective focal length of the imaging lens, and R4 is a radius of curvature of an image side surface of the second lens.
According to one embodiment of the present invention, | f/R7| <1.0, f is an effective focal length of the imaging lens, and R7 is a radius of curvature of an object-side surface of the fourth lens.
According to one embodiment of the invention, TTL/Imgh is less than or equal to 1.6, TTL is the axial distance from the object side surface of the first lens to the imaging surface, and Imgh is half of the diagonal length of the effective pixel area on the imaging surface.
The imaging lens provided by the invention consists of 5 lenses, and can realize the imaging lens with ultrathin large aperture and good imaging quality.
Drawings
Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments thereof, when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an imaging lens of embodiment 1;
fig. 2 to 5 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 1;
fig. 6 is a schematic structural view showing an imaging lens of embodiment 2;
fig. 7 to 10 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 2;
fig. 11 is a schematic structural view showing an imaging lens of embodiment 3;
fig. 12 to 15 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 3;
fig. 16 is a schematic structural view showing an imaging lens of embodiment 4;
fig. 17 to 20 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 4;
fig. 21 is a schematic structural view showing an imaging lens of embodiment 5;
fig. 22 to 25 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 5;
fig. 26 is a schematic structural view showing an imaging lens of embodiment 6;
fig. 27 to 30 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 6;
fig. 31 is a schematic structural view showing an imaging lens of embodiment 7;
fig. 32 to 35 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 7;
fig. 36 is a schematic structural view showing an imaging lens of embodiment 8;
fig. 37 to 40 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an imaging lens of embodiment 8;
fig. 41 is a schematic structural view showing an imaging lens of embodiment 9; and
fig. 42 to 45 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an imaging lens of embodiment 9.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It will be understood that when an element or layer is referred to herein as being "on," "connected to" or "coupled to" another element or layer, it can be directly on, connected or coupled to the other element or layer or intervening elements or layers may be present. When an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout the specification. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that, although the terms 1, 2, first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, a feature that does not define a singular or plural form is also intended to include a feature of the plural form unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "having," "contains" and/or "containing," 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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. A statement such as "at least one of" when appearing after a list of elements modifies the entire list of elements rather than modifying individual elements within the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The application provides an imaging lens. The imaging lens according to the present application is provided with, in order from an object side to an image side of the imaging lens: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens.
In an embodiment of the present application, the first lens has a positive optical power and the object-side surface is convex. In an embodiment of the present application, the second lens has a negative power. In an embodiment of the present application, the third lens has a positive power or a negative power. In an embodiment of the present application, the fourth lens has a positive power or a negative power. In the embodiment of the present application, the fifth lens has a negative power, and the image side surface thereof is concave at the paraxial region and changes from concave to convex as it is farther from the optical axis.
In the embodiment of the application, f/EPD is less than or equal to 1.8 between the effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens, and the incident angle CRA4 of the chief ray corresponding to the maximum field of view incident on the object-side surface of the fourth lens is less than 15 °. More specifically, f/EPD is less than or equal to 1.80 and CRA4 is less than or equal to 11.27. The imaging lens meeting the relation can ensure that the F number of the optical system is within 1.8, and has the characteristic of large aperture. The incident angle of the chief ray corresponding to the maximum field of view is controlled for matching the system with the image sensor CRA and improving the edge relative illumination.
In an embodiment of the present application, 0.5< R2/R3<2.0, R2 is the radius of curvature of the image-side surface of the first lens, and R3 is the radius of curvature of the object-side surface of the second lens. More specifically, 0.70. ltoreq. R2/R3. ltoreq.1.78 is satisfied. The imaging lens satisfying the above relationship is to effectively correct the system spherical aberration by controlling the curvature radii of the first lens and the second lens when the system aperture is increased.
In an embodiment of the present application, 4.0< f1/CT1<6.0, f1 is the effective focal length of the first lens, and CT1 is the center thickness of the first lens. More specifically, 4.37. ltoreq. f1/CT 1. ltoreq.5.41 is satisfied. Too large or too small a center thickness of the lens can cause difficulties in lens molding. The imaging lens meeting the relation can reasonably balance the focal length and the thickness of the first lens, and is beneficial to processing while effectively correcting the aberration of the system.
In an embodiment of the application, 5.5< f/CT4<7.0, f being an effective focal length of the imaging lens, CT4 being a center thickness of the fourth lens. More specifically, 5.84. ltoreq. f/CT 4. ltoreq.6.42 is satisfied. The central thickness of the lens influences the optical focal length value, the ratio of the thickness of the fourth lens to the system focal length is controlled within a certain range, on one hand, the chromatic aberration of the system is favorably corrected, the distortion and the meridian direction coma aberration are favorably improved, and meanwhile, the forming manufacturing is favorably realized.
In the embodiment of the application, f/f1 is more than or equal to 1.0 and less than or equal to 1.5, f is the effective focal length of the imaging lens, and f1 is the effective focal length of the first lens. More specifically, 1.07. ltoreq. f/f 1. ltoreq.1.17 is satisfied. The spherical aberration of the system can be increased under a large aperture, and the first lens is in a positive focal power form, so that the influence of improving the spherical aberration of the system can be realized while light rays are converged.
In an embodiment of the present application, -1.0< f/f2< -0.3, f being an effective focal length of the imaging lens, f2 being an effective focal length of the second lens. More specifically, f/f2 is more than or equal to-0.56 and less than or equal to-0.42. The second lens is in a negative focal power form, the ratio is controlled within a certain range, and the spherical aberration generated by the second lens is offset with the spherical aberration generated by the first lens, so that the effect of improving the spherical aberration is achieved, and the influence of chromatic aberration generated by the positive lens is born.
In an embodiment of the present application, -2.0< f/f5< -0.7, f being an effective focal length of the imaging lens, f5 being an effective focal length of the fifth lens. More specifically, f/f5 is not less than-1.85 and not more than-0.80. Too large a ratio will entail too much power in the fifth lens, resulting in poor manufacturability and too little for correcting distortion in the system. An imaging lens satisfying the above relationship can overcome the above-described drawbacks.
In the embodiment of the application, f/f12 is more than or equal to 0.7 and less than 1.0, f is the effective focal length of the imaging lens, and f12 is the combined focal length of the first lens and the second lens. More specifically, 0.7. ltoreq. f/f 12. ltoreq.0.81 is satisfied. The imaging lens meeting the relation can ensure the reasonable distribution of the focal power of the front group lens by the system and improve the influence of the spherical aberration and the coma aberration of the system on the imaging quality.
In an embodiment of the application, R1/R2<0.5, R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens. More specifically, R1/R2. ltoreq.0.24 is satisfied. Defining this range can help control the power distribution of the first lens, as well as make the shape of the lens within reasonable capabilities of manufacturing.
In the embodiment of the application, 1.0< f/R4<2.0, f is an effective focal length of the imaging lens, and R4 is a curvature radius of an image side surface of the second lens. More specifically, 1.13. ltoreq. f/R4. ltoreq.1.79 is satisfied. When the curvature radius of the image side surface of the second lens is too small, ghost images are easy to generate, and when the curvature radius of the image side surface of the second lens is too large, off-axis aberration of the system is not easy to correct. An imaging lens satisfying the above relationship can overcome the above drawbacks.
In the embodiment of the present application, | f/R7| <1.0, f is an effective focal length of the imaging lens, and R7 is a radius of curvature of an object side surface of the fourth lens. More specifically, | f/R7| ≦ 0.76. The range is limited so that the angle is smaller when the marginal ray enters the fourth lens, and the adverse effect of polarization on marginal illumination is reduced.
In the embodiment of the application, TTL/ImgH is less than or equal to 1.6, TTL is an on-axis distance from an object side surface of the first lens element to an imaging surface, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface. More specifically, TTL/ImgH ≦ 1.56 is satisfied. The ratio range is controlled to ensure that the system meets the requirements of ultrathin and miniaturized system structures under the condition of meeting the imaging quality requirement.
The present application is further described below with reference to specific examples.
Example 1
An imaging lens according to embodiment 1 of the present application is described first with reference to fig. 1 to 5.
Fig. 1 is a schematic diagram showing the structure of an imaging lens of embodiment 1. As shown in fig. 1, the imaging lens includes 5 lenses. The 5 lenses are a first lens E1 having an object side surface S1 and an image side surface S2, a second lens E2 having an object side surface S3 and an image side surface S4, a third lens E3 having an object side surface S5 and an image side surface S6, a fourth lens E4 having an object side surface S7 and an image side surface S8, and a fifth lens E5 having an object side surface S9 and an image side surface S10, respectively. The first lens E1 to the fifth lens E5 are disposed in order from the object side to the image side of the imaging lens. The first lens E1 may have positive optical power, and its object-side surface S1 may be convex; the second lens E2 may have a negative power, and its image-side surface S4 may be concave; the third lens E3 may have a positive optical power; the fourth lens E4 may have a positive optical power; the fifth lens element E5 may have a negative power, and its image-side surface is concave at the paraxial region, changing from concave to convex with distance from the optical axis. The imaging lens further comprises a filter E6 which is used for filtering infrared light and is provided with an object side surface S11 and an image side surface S12. In this embodiment, light from the object passes through the respective surfaces S1 to S12 in sequence and is finally imaged on the imaging surface S13.
In this embodiment, the first lens E1 through the fifth lens E5 have respective effective focal lengths f1 through f5, respectively. The first lens E1 to the fifth lens E5 are arranged in order along the optical axis and collectively determine the total effective focal length f of the imaging lens. Table 1 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
| f1(mm) | 3.50 | f(mm) | 3.75 |
| f2(mm) | -7.90 | TTL(mm) | 4.50 |
| f3(mm) | 28.78 | HFOV(°) | 38.6 |
| f4(mm) | 4.00 | ||
| f5(mm) | -3.10 |
TABLE 1
Table 2 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.4037 | ||
| S1 | Aspherical surface | 1.5506 | 0.6691 | 1.546,56.11 | -0.1680 |
| S2 | Aspherical surface | 6.9719 | 0.0559 | 39.6397 | |
| S3 | Aspherical surface | 4.2172 | 0.2500 | 1.666,20.37 | -23.8067 |
| S4 | Aspherical surface | 2.2855 | 0.4177 | 2.3283 | |
| S5 | Aspherical surface | 12.2556 | 0.3747 | 1.546,56.11 | 74.5610 |
| S6 | Aspherical surface | 55.0884 | 0.4949 | -97.7021 | |
| S7 | Aspherical surface | 320.8682 | 0.5996 | 1.546,56.11 | 99.0000 |
| S8 | Aspherical surface | -2.1959 | 0.3460 | 0.0744 | |
| S9 | Aspherical surface | 1.6824 | 0.3030 | 1.536,55.77 | -20.7495 |
| S10 | Aspherical surface | 0.7841 | 0.2693 | -5.4201 | |
| S11 | Spherical surface | Go to nothing | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | Go to nothing | 0.5097 | ||
| S13 | Spherical surface | All-round |
TABLE 2
Table 3 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 3
Fig. 2 shows an on-axis chromatic aberration curve of the imaging lens of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through an optical system. Fig. 3 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 1. Fig. 4 shows distortion curves of the imaging lens of embodiment 1, which represent distortion magnitude values in the case of different angles of view. Fig. 5 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen by referring to fig. 2 to 5, the imaging lens according to embodiment 1 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 2
An imaging lens according to embodiment 2 of the present application is described below with reference to fig. 6 to 10. The imaging lenses described in embodiment 2 and the following embodiments are the same in arrangement structure as the imaging lens described in embodiment 1 except for parameters of the respective lenses of the imaging lens, such as a radius of curvature, a thickness, a material, a conic coefficient, an effective focal length, an on-axis pitch, a high-order term coefficient of the respective lenses, and the like. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity.
Fig. 6 is a schematic diagram showing the structure of an imaging lens of embodiment 2. The imaging lens comprises a first lens E1, a second lens E2, a third lens E3, a fourth lens E4 and a fifth lens E5 from the object side to the image side.
Table 4 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
| f1(mm) | 3.41 | f(mm) | 3.74 |
| f2(mm) | -8.55 | TTL(mm) | 4.54 |
| f3(mm) | -2630.73 | HFOV(°) | 38.4 |
| f4(mm) | 4.01 | ||
| f5(mm) | -3.04 |
TABLE 4
Table 5 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
TABLE 5
Table 6 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 6
Fig. 7 shows on-axis chromatic aberration curves of the imaging lens of embodiment 2, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 8 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 2. Fig. 9 shows distortion curves of the imaging lens of embodiment 2, which represent distortion magnitude values in the case of different angles of view. Fig. 10 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 7 to 10, the imaging lens according to embodiment 2 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 3
An imaging lens according to embodiment 3 of the present application is described below with reference to fig. 11 to 15.
Fig. 11 is a schematic diagram showing the structure of an imaging lens of embodiment 3. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 7 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
TABLE 7
Table 8 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.3947 | ||
| S1 | Aspherical surface | 1.5283 | 0.6443 | 1.546,56.11 | -0.1920 |
| S2 | Aspherical surface | 6.6072 | 0.0550 | 39.5703 | |
| S3 | Aspherical surface | 3.8195 | 0.2500 | 1.666,20.37 | -24.8829 |
| S4 | Aspherical surface | 2.1456 | 0.4162 | 2.4649 | |
| S5 | Aspherical surface | 103.3630 | 0.3793 | 1.546,56.11 | 99.0000 |
| S6 | Aspherical surface | -15.0358 | 0.5215 | 98.8677 | |
| S7 | Aspherical surface | -232.1383 | 0.6128 | 1.536,55.77 | -99.0000 |
| S8 | Aspherical surface | -2.0993 | 0.3652 | -0.1308 | |
| S9 | Aspherical surface | 1.6552 | 0.2736 | 1.546,56.11 | -22.9295 |
| S10 | Aspherical surface | 0.7518 | 0.2655 | -5.2801 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.5067 | ||
| S13 | Spherical surface | All-round |
TABLE 8
Table 9 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 9
Fig. 12 shows on-axis chromatic aberration curves of the imaging lens of embodiment 3, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 13 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 3. Fig. 14 shows distortion curves of the imaging lens of embodiment 3, which represent distortion magnitude values in the case of different angles of view. Fig. 15 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 12 to 15, the imaging lens according to embodiment 3 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 4
An imaging lens according to embodiment 4 of the present application is described below with reference to fig. 16 to 20.
Fig. 16 is a schematic diagram showing the structure of an imaging lens of embodiment 4. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 10 below shows effective focal lengths f1 to f5 of the first to fifth lenses E1 to E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
| f1(mm) | 3.38 | f(mm) | 3.77 |
| f2(mm) | -7.57 | TTL(mm) | 4.50 |
| f3(mm) | 37.93 | HFOV(°) | 38.5 |
| f4(mm) | 3.82 | ||
| f5(mm) | -2.97 |
Table 11 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.4012 | ||
| S1 | Aspherical surface | 1.5059 | 0.6504 | 1.546,56.11 | 0.1437 |
| S2 | Aspherical surface | 6.9464 | 0.0618 | 26.1582 | |
| S3 | Aspherical surface | 3.9016 | 0.2500 | 1.666,20.37 | -23.4420 |
| S4 | Aspherical surface | 2.1433 | 0.4332 | 2.8239 | |
| S5 | Aspherical surface | -4051.1171 | 0.3547 | 1.546,56.11 | -99.0000 |
| S6 | Aspherical surface | -20.6045 | 0.4874 | 99.0000 | |
| S7 | Aspherical surface | -500.3955 | 0.6344 | 1.536,55.77 | 99.0000 |
| S8 | Aspherical surface | -2.0795 | 0.3251 | -0.6065 | |
| S9 | Aspherical surface | 1.8329 | 0.3122 | 1.546,56.11 | -24.6573 |
| S10 | Aspherical surface | 0.8011 | 0.2701 | -5.3313 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.5106 | ||
| S13 | Spherical surface | All-round |
TABLE 11
Table 12 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 12
Fig. 17 shows on-axis chromatic aberration curves of the imaging lens of embodiment 4, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 18 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 4. Fig. 19 shows distortion curves of the imaging lens of embodiment 4, which represent distortion magnitude values in the case of different angles of view. Fig. 20 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 17 to 20, the imaging lens according to embodiment 4 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 5
An imaging lens according to embodiment 5 of the present application is described below with reference to fig. 21 to 25.
Fig. 21 is a schematic diagram showing the structure of an imaging lens of embodiment 5. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 13 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
Table 14 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.4086 | ||
| S1 | Aspherical surface | 1.5197 | 0.6455 | 1.546,56.11 | -0.0153 |
| S2 | Aspherical surface | 6.3867 | 0.0527 | 34.8820 | |
| S3 | Aspherical surface | 3.8317 | 0.2500 | 1.666,20.37 | -24.0868 |
| S4 | Aspherical surface | 2.1171 | 0.3936 | 2.0224 | |
| S5 | Aspherical surface | -95.4413 | 0.3864 | 1.546,56.11 | 99.0000 |
| S6 | Aspherical surface | -9.9224 | 0.5829 | 11.3470 | |
| S7 | Aspherical surface | 20.2780 | 0.6152 | 1.536,55.77 | 93.4719 |
| S8 | Aspherical surface | -2.1007 | 0.3599 | 0.1909 | |
| S9 | Aspherical surface | 2.3013 | 0.2500 | 1.546,56.11 | -49.6869 |
| S10 | Aspherical surface | 0.8253 | 0.2563 | -6.3443 | |
| S11 | Spherical surface | Go to nothing | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.4976 | ||
| S13 | Spherical surface | Go to nothing |
TABLE 14
Table 15 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
Watch 15
Fig. 22 shows on-axis chromatic aberration curves of the imaging lens of embodiment 5, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 23 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 5. Fig. 24 shows distortion curves of the imaging lens of embodiment 5, which represent distortion magnitude values in the case of different angles of view. Fig. 25 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 22 to 25, the imaging lens according to embodiment 5 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 6
An imaging lens according to embodiment 6 of the present application is described below with reference to fig. 26 to 30.
Fig. 26 is a schematic diagram showing a structure of an imaging lens of embodiment 6. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 16 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
| f1(mm) | 3.23 | f(mm) | 3.77 |
| f2(mm) | -6.73 | TTL(mm) | 4.50 |
| f3(mm) | 26.92 | HFOV(°) | 38.5 |
| f4(mm) | 2.67 | ||
| f5(mm) | -2.04 |
TABLE 16
Table 17 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | Go to nothing | All-round | ||
| STO | Spherical surface | All-round | -0.4281 | ||
| S1 | Aspherical surface | 1.5039 | 0.6653 | 1.546,56.11 | 0.3046 |
| S2 | Aspherical surface | 8.6803 | 0.0498 | 0.1000 | |
| S3 | Aspherical surface | 5.0988 | 0.2500 | 1.666,20.37 | -19.9624 |
| S4 | Aspherical surface | 2.3394 | 0.4059 | 2.8309 | |
| S5 | Aspherical surface | -13.0692 | 0.3902 | 1.546,56.11 | 99.0000 |
| S6 | Aspherical surface | -6.9905 | 0.5841 | 1.7093 | |
| S7 | Aspherical surface | 92.4463 | 0.6143 | 1.536,55.77 | 9.0000 |
| S8 | Aspherical surface | -1.4756 | 0.3358 | -7.9152 | |
| S9 | Aspherical surface | -21.8583 | 0.2500 | 1.546,56.11 | 94.7660 |
| S10 | Aspherical surface | 1.1540 | 0.6316 | -6.3694 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.1130 | ||
| S13 | Spherical surface | Go to nothing |
TABLE 17
Table 18 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
Watch 18
Fig. 27 shows on-axis chromatic aberration curves of the imaging lens of embodiment 6, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 28 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 6. Fig. 29 shows distortion curves of the imaging lens of embodiment 6, which represent distortion magnitude values in the case of different angles of view. Fig. 30 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 27 to 30, the imaging lens according to embodiment 6 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 7
An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 31 to 35.
Fig. 31 is a schematic diagram showing the structure of an imaging lens of embodiment 7. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 19 below shows effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
Watch 19
Table 20 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.3958 | ||
| S1 | Aspherical surface | 1.566 | 0.7090 | 1.546,56.11 | -0.2883 |
| S2 | Aspherical surface | 7.148 | 0.0347 | 40.4507 | |
| S3 | Aspherical surface | 4.6465 | 0.3005 | 1.666,20.37 | -18.3504 |
| S4 | Aspherical surface | 2.5721 | 0.2911 | 1.8919 | |
| S5 | Aspherical surface | 7.3127 | 0.3862 | 1.546,56.11 | 47.8874 |
| S6 | Aspherical surface | -13.9327 | 0.5325 | -60.1885 | |
| S7 | Aspherical surface | -5.0798 | 0.6588 | 1.666,20.37 | 19.4686 |
| S8 | Aspherical surface | -5.3843 | 0.2854 | 8.7408 | |
| S9 | Aspherical surface | 2.4239 | 0.6270 | 1.536,55.77 | -17.1401 |
| S10 | Aspherical surface | 1.1410 | 0.3114 | -5.4979 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.2334 | ||
| S13 | Spherical surface | All-round |
Watch 20
The following table 21 shows aspherical surfaces of aspherical lenses usable in this embodimentHigh-order term coefficient A of S1-S10 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 21
Fig. 32 shows on-axis chromatic aberration curves of the imaging lens of embodiment 7, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 33 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 7. Fig. 34 shows distortion curves of the imaging lens of embodiment 7, which represent distortion magnitude values in the case of different angles of view. Fig. 35 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 7, which represents a deviation of different image heights on an imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 32 to 35, the imaging lens according to embodiment 7 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 8
An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 36 to 40.
Fig. 36 is a schematic diagram showing a structure of an imaging lens of embodiment 8. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
The following table 22 shows effective focal lengths f1 to f5 of the first to fifth lenses E1 to E5, a total effective focal length f of the imaging lens, a total length TTL of the imaging lens, and half of a maximum field angle HFOV of the imaging lens.
| f1(mm) | 3.46 | f(mm) | 3.76 |
| f2(mm) | -8.11 | TTL(mm) | 4.50 |
| f3(mm) | 34.18 | HFOV(°) | 38.6 |
| f4(mm) | 3.73 | ||
| f5(mm) | -2.86 |
TABLE 22
Table 23 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
TABLE 23
Table 24 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
Watch 24
Fig. 37 shows on-axis chromatic aberration curves of the imaging lens of embodiment 8, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 38 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 8. Fig. 39 shows distortion curves of the imaging lens of embodiment 8, which represent distortion magnitude values in the case of different angles of view. Fig. 40 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. As can be seen from the above and with reference to fig. 37 to 40, the imaging lens according to embodiment 8 is an imaging lens having an ultra-thin large aperture and good imaging quality.
Example 9
An imaging lens according to embodiment 9 of the present application is described below with reference to fig. 41 to 45.
Fig. 41 is a schematic diagram showing the structure of an imaging lens of embodiment 9. The imaging lens includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5.
Table 25 below shows the effective focal lengths f1 to f5 of the first lens E1 to the fifth lens E5, the total effective focal length f of the imaging lens, the total length TTL of the imaging lens, and half of the maximum field angle HFOV of the imaging lens.
TABLE 25
Table 26 below shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the imaging lens in this embodiment.
| Flour mark | Surface type | Radius of curvature | Thickness of | Material | Coefficient of cone |
| OBJ | Spherical surface | All-round | All-round | ||
| STO | Spherical surface | All-round | -0.3807 | ||
| S1 | Aspherical surface | 1.5674 | 0.7763 | 1.546,56.11 | 0.2126 |
| S2 | Aspherical surface | 8.4426 | 0.0832 | -90.3510 | |
| S3 | Aspherical surface | 12.1005 | 0.2500 | 1.666,20.37 | 97.1981 |
| S4 | Aspherical surface | 3.3012 | 0.2929 | 2.8491 | |
| S5 | Aspherical surface | 9.7853 | 0.4309 | 1.546,56.11 | -99.0000 |
| S6 | Aspherical surface | 3411.4325 | 0.5167 | 99.0000 | |
| S7 | Aspherical surface | 26.2478 | 0.5824 | 1.546,56.11 | -99.0000 |
| S8 | Aspherical surface | -2.2084 | 0.3273 | -3.5321 | |
| S9 | Aspherical surface | 2.0866 | 0.2770 | 1.536,55.77 | -43.3115 |
| S10 | Aspherical surface | 0.8178 | 0.2561 | -6.0479 | |
| S11 | Spherical surface | All-round | 0.2100 | 1.517,64.17 | |
| S12 | Spherical surface | All-round | 0.4973 | ||
| S13 | Spherical surface | All-round |
Table 27 below shows the high-order term coefficients A of the respective aspherical surfaces S1-S10 usable for the respective aspherical lenses in this embodiment 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -8.7109E-03 | 1.7758E-02 | -6.8614E-02 | 1.4862E-01 | -1.8254E-01 | 1.2387E-01 | -4.4460E-02 | 7.7384E-03 | -4.9383E-04 |
| S2 | -8.1514E-02 | 2.0220E-01 | 1.1057E-01 | -2.5003E+00 | 9.2250E+00 | -1.7256E+01 | 1.7515E+01 | -9.0945E+00 | 1.8824E+00 |
| S3 | -2.0638E-01 | 7.0465E-01 | -2.2332E+00 | 6.1728E+00 | -1.1350E+01 | 1.2527E+01 | -7.8928E+00 | 2.6045E+00 | -3.4833E-01 |
| S4 | -1.3478E-01 | 2.3677E-01 | 8.1028E-01 | -6.1563E+00 | 1.8647E+01 | -3.1576E+01 | 3.0541E+01 | -1.5604E+01 | 3.2493E+00 |
| S5 | -1.4966E-01 | -9.8013E-02 | 9.3924E-01 | -4.1372E+00 | 1.0371E+01 | -1.5962E+01 | 1.4763E+01 | -7.5332E+00 | 1.6557E+00 |
| S6 | -1.2901E-01 | 1.8854E-03 | -4.0460E-02 | 1.9848E-01 | -6.3839E-01 | 1.1033E+00 | -1.0368E+00 | 5.0818E-01 | -9.8937E-02 |
| S7 | -1.5503E-02 | -5.3656E-02 | 2.1497E-02 | 3.8237E-03 | -2.6676E-02 | 2.1037E-02 | -6.8587E-03 | 1.0242E-03 | -5.8057E-05 |
| S8 | -4.8164E-02 | 1.9273E-02 | -3.7401E-03 | 2.3901E-04 | 7.5229E-07 | -8.7171E-07 | 4.6578E-08 | -1.0491E-09 | 8.9884E-12 |
| S9 | -6.2798E-01 | 4.8191E-01 | -1.8853E-01 | 4.1177E-02 | -5.1864E-03 | 3.9076E-04 | -1.7559E-05 | 4.3816E-07 | -4.7167E-09 |
| S10 | -3.1356E-01 | 2.9773E-01 | -2.1119E-01 | 1.1245E-01 | -4.2982E-02 | 1.1127E-02 | -1.8377E-03 | 1.7427E-04 | -7.2208E-06 |
Watch 27
Fig. 42 shows on-axis chromatic aberration curves of an imaging lens of embodiment 9, which represent convergent focus deviations of light rays of different wavelengths after passing through an optical system. Fig. 43 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 9. Fig. 44 shows distortion curves of the imaging lens of embodiment 9, which represent distortion magnitude values in the case of different angles of view. Fig. 45 shows a chromatic aberration of magnification curve of the imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging plane after light passes through the imaging lens. In summary, and as can be seen with reference to fig. 42 to 45, the imaging lens according to embodiment 9 is an imaging lens having an ultra-thin large aperture and good imaging quality.
In summary, in the above examples 1 to 9, each conditional expression satisfies the conditions of the following table 28.
| Formula \ example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| f/EPD | 1.70 | 1.78 | 1.79 | 1.79 | 1.79 | 1.79 | 1.80 | 1.79 | 1.79 |
| CRA4 | 0.96 | 5.59 | 0.33 | 4.33 | 5.98 | 11.27 | 4.70 | 0.96 | 5.36 |
| R2/R3 | 1.65 | 1.76 | 1.73 | 1.78 | 1.67 | 1.70 | 1.54 | 1.73 | 0.70 |
| f1/CT1 | 5.23 | 5.32 | 5.41 | 5.20 | 5.41 | 4.85 | 4.94 | 4.75 | 4.37 |
| f/CT4 | 6.26 | 5.84 | 6.16 | 5.95 | 6.15 | 6.14 | 5.89 | 5.88 | 6.42 |
| f/f1 | 1.07 | 1.10 | 1.08 | 1.12 | 1.08 | 1.17 | 1.11 | 1.09 | 1.10 |
| f/f2 | -0.48 | -0.44 | -0.48 | -0.50 | -0.50 | -0.56 | -0.42 | -0.46 | -0.54 |
| f/f5 | -1.21 | -1.23 | -1.31 | -1.27 | -1.48 | -1.85 | -0.80 | -1.31 | -1.38 |
| f/f12 | 0.72 | 0.78 | 0.73 | 0.76 | 0.72 | 0.75 | 0.81 | 0.75 | 0.70 |
| R1/R2 | 0.22 | 0.21 | 0.23 | 0.22 | 0.24 | 0.17 | 0.22 | 0.23 | 0.19 |
| f/R4 | 1.64 | 1.62 | 1.76 | 1.76 | 1.79 | 1.61 | 1.51 | 1.72 | 1.13 |
| |f/R7| | 0.01 | 0.17 | 0.02 | 0.01 | 0.19 | 0.04 | 0.76 | 0.03 | 0.14 |
| TTL/ImgH | 1.47 | 1.49 | 1.47 | 1.47 | 1.47 | 1.47 | 1.56 | 1.47 | 1.47 |
Watch 28
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (11)
1. An imaging lens assembly including, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has negative focal power, and the object side surface of the second lens is a convex surface;
the third lens has positive optical power or negative optical power;
the fourth lens has positive focal power or negative focal power;
the fifth lens has a negative optical power;
the effective focal length f of the imaging lens, the curvature radius R4 of the image side surface of the second lens, the combined focal length f12 of the first lens and the second lens and the center thickness CT4 of the fourth lens meet the following conditions:
1.51≤f/R4<2.0，
0.7. ltoreq. f/f12<1.0, and
5.5<f/CT4<7.0，
wherein the number of lenses having power in the imaging lens is five.
2. Imaging lens according to claim 1,
the image side surface of the fifth lens is concave at the paraxial part and changes from concave to convex along with the distance from the optical axis.
3. Imaging lens according to claim 1 or 2, characterized in that 0.5< R2/R3<2.0, R2 is the radius of curvature of the image side surface of the first lens and R3 is the radius of curvature of the object side surface of the second lens.
4. The imaging lens of claim 3, wherein 4.0< f1/CT1<6.0, f1 is an effective focal length of the first lens, and CT1 is a center thickness of the first lens.
5. The imaging lens according to claim 1 or 2, characterized in that 1.0 ≦ f/f1<1.5, f being an effective focal length of the imaging lens, f1 being an effective focal length of the first lens.
6. The imaging lens of claim 5, characterized in that-1.0 < f/f2< -0.3, f being an effective focal length of the imaging lens, f2 being an effective focal length of the second lens.
7. The imaging lens according to claim 1 or 2, characterized in that-2.0 < f/f5< -0.7, f being an effective focal length of the imaging lens, f5 being an effective focal length of the fifth lens.
8. The imaging lens of claim 2, wherein f/EPD ≦ 1.8 between the effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens, and an incident angle CRA4<15 ° of a chief ray incident on the object-side surface of the fourth lens corresponding to a maximum field of view.
9. The imaging lens of claim 1, wherein R1/R2<0.5, R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens.
10. The imaging lens according to claim 1 or 2, characterized in that |/R7 | <1.0, f is an effective focal length of the imaging lens, and R7 is a radius of curvature of an object-side surface of the fourth lens.
11. The imaging lens according to claim 1 or 2, wherein TTL/ImgH is equal to or less than 1.6, TTL is an on-axis distance from an object side surface of the first lens element to an imaging plane, and ImgH is a half of a diagonal length of an effective pixel area on the imaging plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111174119.7A CN113866950A (en) | 2017-04-18 | 2017-04-18 | Imaging lens |
| CN201710253905.3A CN106896481B (en) | 2017-04-18 | 2017-04-18 | Imaging lens |
| CN202111174253.7A CN113866951A (en) | 2017-04-18 | 2017-04-18 | Imaging lens |
| PCT/CN2017/102429 WO2018192166A1 (en) | 2017-04-18 | 2017-09-20 | Imaging lens |
| US16/067,061 US11333855B2 (en) | 2017-04-18 | 2017-09-20 | Imaging lens assembly |
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| WO2018192166A1 (en) * | 2017-04-18 | 2018-10-25 | 浙江舜宇光学有限公司 | Imaging lens |
| WO2019019530A1 (en) * | 2017-07-25 | 2019-01-31 | 浙江舜宇光学有限公司 | Optical imaging camera |
| CN107300756B (en) * | 2017-08-23 | 2019-12-10 | 浙江舜宇光学有限公司 | Camera lens |
| WO2019037466A1 (en) * | 2017-08-23 | 2019-02-28 | 浙江舜宇光学有限公司 | Camera lens |
| WO2019052199A1 (en) * | 2017-09-13 | 2019-03-21 | 浙江舜宇光学有限公司 | Camera lens |
| WO2019091137A1 (en) * | 2017-11-08 | 2019-05-16 | 浙江舜宇光学有限公司 | Optical lens |
| CN109212719B (en) * | 2018-05-02 | 2021-01-22 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN108333725B (en) * | 2018-05-09 | 2023-06-30 | 浙江舜宇光学有限公司 | Image pickup lens group |
| CN108398770B (en) * | 2018-06-05 | 2021-01-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110927939A (en) * | 2018-09-20 | 2020-03-27 | 南昌欧菲精密光学制品有限公司 | Optical imaging system, image capturing module and electronic device |
| CN111736321B (en) * | 2020-08-26 | 2020-12-22 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
| CN113031214B (en) * | 2021-03-19 | 2022-08-02 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN114326026B (en) * | 2021-12-29 | 2023-09-05 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| TWI808028B (en) * | 2022-10-31 | 2023-07-01 | 新鉅科技股份有限公司 | Optical lens assembly and photographing module |
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| CN102236153B (en) * | 2010-05-05 | 2013-07-10 | 大立光电股份有限公司 | Optical shot for image capture |
| JP5754670B2 (en) * | 2011-06-29 | 2015-07-29 | 株式会社オプトロジック | Imaging lens |
| TWI457594B (en) * | 2011-08-26 | 2014-10-21 | Largan Precision Co Ltd | Image lens assembly |
| JP2013109085A (en) * | 2011-11-18 | 2013-06-06 | Sony Corp | Imaging lens and imaging apparatus |
| US8743484B2 (en) * | 2012-09-03 | 2014-06-03 | Newmax Technology Co., Ltd. | Five-piece optical lens system |
| JP2014153576A (en) * | 2013-02-08 | 2014-08-25 | Konica Minolta Inc | Imaging lens, and imaging device and portable terminal |
| JP2014153577A (en) * | 2013-02-08 | 2014-08-25 | Konica Minolta Inc | Imaging lens, and imaging device and portable terminal |
| KR102094521B1 (en) * | 2013-10-17 | 2020-03-27 | 엘지이노텍 주식회사 | Optical system and camera module for comprising the same |
| JP2015135357A (en) * | 2014-01-16 | 2015-07-27 | 富士フイルム株式会社 | Imaging lens and imaging device including the imaging lens |
| TWI537631B (en) * | 2014-10-20 | 2016-06-11 | 大立光電股份有限公司 | Imaging lens system, image capturing device and electronic device |
| KR101719877B1 (en) * | 2014-12-05 | 2017-03-24 | 삼성전기주식회사 | Lens module |
| CN105988185B (en) * | 2015-04-10 | 2018-11-30 | 浙江舜宇光学有限公司 | Pick-up lens |
| JP5922854B1 (en) * | 2016-01-27 | 2016-05-24 | エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． | Imaging lens |
| CN206684372U (en) * | 2017-04-18 | 2017-11-28 | 浙江舜宇光学有限公司 | Imaging lens |
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| CN106896481A (en) | 2017-06-27 |
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