CN210666168U - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN210666168U CN210666168U CN201921540441.5U CN201921540441U CN210666168U CN 210666168 U CN210666168 U CN 210666168U CN 201921540441 U CN201921540441 U CN 201921540441U CN 210666168 U CN210666168 U CN 210666168U
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Abstract
The application provides an optical imaging lens, wherein the optical imaging lens comprises a first lens with optical power in order from an object side to an image side along an optical axis; a second lens having an optical power; and a third lens having optical power; wherein a distance BFL from an image side surface of a third lens of the optical imaging lens to an imaging surface of the optical imaging lens on the optical axis and a distance Td from an object side surface of the first lens to the image side surface of the third lens on the optical axis satisfy: BFL/Td is more than or equal to 4.5 and less than or equal to 7.0.
Description
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
In recent years, with the popularization of portable electronic products such as mobile phones and tablet computers, camera functions provided by the portable electronic products are widely used. Especially, multi-scene shooting under different environments has become a common requirement for people to shoot images. The remote high-definition shooting is a relatively enthusiastic shooting mode for people in a part of shooting environments. Meanwhile, in order to obtain a good photographing effect, it may be required that an optical imaging lens in the photographing apparatus has a telephoto characteristic or the like.
SUMMERY OF THE UTILITY MODEL
An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having an optical power; and a third lens having optical power.
In one embodiment, a distance BFL between an image side surface of a third lens of the optical imaging lens and an image plane of the optical imaging lens on the optical axis and a distance Td between an object side surface of the first lens and the image side surface of the third lens on the optical axis satisfy: BFL/Td is more than or equal to 4.5 and less than or equal to 7.0.
In one embodiment, the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy: V2-V3| > 35.
In one embodiment, the maximum field angle FOV of the optical imaging lens satisfies: tan (fov) < 0.4.
In one embodiment, the entrance pupil diameter EPD of the optical imaging lens and a half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens satisfy: 2.5< EPD/ImgH < 3.5.
In one embodiment, a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT32 of an image-side surface of the third lens satisfy: DT11/DT32 of more than or equal to 0.9 and less than or equal to 1.2.
In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy: -2.5< f2/f3< 0.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f/| f1| < 1.0.
In one embodiment, the refractive index N2 of the second lens and the refractive index N3 of the third lens satisfy: l N2-N3 l < 0.1.
In one embodiment, a radius of curvature R4 of the image-side surface of the second lens and a radius of curvature R5 of the object-side surface of the third lens satisfy: 0< R4/R5< 4.
In one embodiment, a separation distance T12 of the first lens and the second lens on the optical axis, a separation distance T23 of the second lens and the third lens on the optical axis, and a distance Td between an object side surface of the first lens and an image side surface of the third lens on the optical axis satisfy: (T12+ T23)/Td < 1.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 3.0< f/EPD < 4.5.
In one embodiment, at least one of the first lens to the third lens is a glass lens.
In one embodiment, the optical imaging lens further includes a prism disposed between an image side surface of the third lens and an imaging surface of the optical imaging lens.
The optical imaging lens provided by the application adopts a plurality of lens arrangements, including a first lens to a third lens. The telephoto characteristic of the optical imaging lens is realized by reasonably setting the proportional relationship between the distance from the image side surface of the third lens of the optical imaging lens to the imaging surface of the optical imaging lens on the optical axis and the distance from the object side surface of the first lens to the image side surface of the third lens on the optical axis.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens 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 chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens 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 chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 8;
fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 9;
fig. 19 is a schematic structural view showing an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 10.
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 the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present 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, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that 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 called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in 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 features, principles, and other aspects of the present application are described in detail below.
An optical imaging lens according to an exemplary embodiment of the present application may include three lenses having optical powers, i.e., a first lens, a second lens, and a third lens. The three lenses are arranged in sequence from an object side to an image side along an optical axis.
In an exemplary embodiment, the first lens can have a positive or negative power, with a convex or concave object-side surface and a convex or concave image-side surface; the second lens has positive focal power or negative focal power, the object side surface of the second lens is a convex surface or a concave surface, and the image side surface of the second lens is a convex surface or a concave surface; the third lens element can have positive or negative power, and has a convex or concave object-side surface and a convex or concave image-side surface. A distance BFL from an image side surface of a third lens of the optical imaging lens to an imaging surface of the optical imaging lens on the optical axis and a distance Td from an object side surface of the first lens to the image side surface of the third lens on the optical axis satisfy: 4.5 ≦ BFL/Td ≦ 7.0, e.g., 4.9 ≦ BFL/Td ≦ 7.0. The reasonable setting the image side face of the third lens of the optical imaging lens is extremely the imaging surface of the optical imaging lens is in the proportional relation of the distance on the optical axis and the object side face of the first lens is extremely the image side face of the third lens is in the distance on the optical axis, the super-long-focus performance of the optical imaging lens is favorably realized, and the miniaturization of the lens is favorably realized.
In an exemplary embodiment, the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy: V2-V3 l >35, e.g., 40> | V2-V3 l > 35. The second lens and the third lens have larger abbe number difference, which is beneficial to correcting vertical axis chromatic aberration, axial chromatic aberration and spherical aberration of the optical system, thereby improving the imaging quality of the system.
In an exemplary embodiment, the maximum field angle FOV of the optical imaging lens satisfies: tan (fov) <0.4, e.g., 0.15< tan (fov) < 0.4. The maximum field angle of the small optical imaging lens is reasonably set, which is beneficial to obtaining a large system focal length, so that the lens can meet the long-focus characteristic. The optical imaging lens with the long-focus characteristic in the embodiment can be used together with a short-focus wide-angle lens to realize optical zooming with larger multiple.
In an exemplary embodiment, the entrance pupil diameter EPD of the optical imaging lens and a half ImgH of a diagonal length of an effective pixel area on an imaging plane of the optical imaging lens satisfy: 2.5< EPD/ImgH < 3.5. The ratio of the diameter of the entrance pupil of the optical imaging lens to half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is set within a reasonable numerical range, so that the miniaturization of the system is facilitated, and the optical system is ensured to have good imaging quality in a dark shooting environment.
In an exemplary embodiment, a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT32 of an image-side surface of the third lens satisfy: DT11/DT32 of more than or equal to 0.9 and less than or equal to 1.2. The proportional relation between the maximum effective radius of the object side surface of the first lens and the maximum effective radius of the image side surface of the third lens is reasonably set, so that the size of the front end of the lens is favorably reduced, and the whole optical imaging lens is lighter and thinner. In addition, in this embodiment, the above-mentioned relation setting is also favorable to limiting the incident range of the light, removing the light with poor edge quality, reducing the off-axis aberration and effectively improving the lens resolving power.
In an exemplary embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy: -2.5< f2/f3< 0. The ratio of the effective focal length of the second lens to the effective focal length of the third lens is set within a reasonable numerical range, so that the residual error of the two lenses after the positive spherical aberration and the negative spherical aberration are balanced is controlled within a smaller range, the balance of the residual spherical aberration of the subsequent lens with smaller burden is facilitated, and the image quality near the on-axis view field of the optical system is easier to ensure.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: f/| f1| < 1.0. The proportional relation between the total effective focal length of the optical imaging lens and the effective focal length of the first lens is reasonably set so as to effectively control the focal power of the first lens, thereby being beneficial to reasonably controlling the contribution size and the direction of spherical aberration of the first lens, balancing most of third-order spherical aberration generated by the first lens and improving the imaging quality.
In an exemplary embodiment, the refractive index N2 of the second lens and the refractive index N3 of the third lens satisfy: | N2-N3| <0.1, e.g., | N2-N3| < 0.05. The deviation of the refractive indexes of the second lens and the third lens is reasonably controlled, the reasonable distribution of the focal power of the system is facilitated, and the temperature drift of the system is well eliminated while the good image quality of the system is met.
In an exemplary embodiment, a radius of curvature R4 of an image-side surface of the second lens and a radius of curvature R5 of an object-side surface of the third lens satisfy: 0< R4/R5< 4. The curvature radius of the image side surface of the second lens and the curvature radius of the object side surface of the third lens are reasonably set, so that the aberration contribution rate of the second lens and the aberration contribution rate of the third lens are effectively restrained, the system and the aperture zone related aberration are effectively balanced, and the imaging quality of the system is effectively improved.
In an exemplary embodiment, a separation distance T12 of the first lens and the second lens on the optical axis, a separation distance T23 of the second lens and the third lens on the optical axis, and a distance Td on the optical axis from an object side surface of the first lens to an image side surface of the third lens satisfy: (T12+ T23)/Td <1.0, e.g., 0.3< (T12+ T23)/Td < 1.0. The mutual relation among the three is reasonably set, and the spacing distance among the lenses is reasonably distributed, so that the field curvature of the system is favorably ensured, and the off-axis visual field of the system obtains good imaging quality.
In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 3.0< f/EPD < 4.5. The proportional relation between the total effective focal length of the optical imaging lens and the entrance pupil diameter of the optical imaging lens is reasonably set, and the system focal power and the entrance pupil diameter of the beam limiting optical system are reasonably distributed, so that the F number of the large-image-plane optical system is in a reasonable numerical range, the large-image-plane optical system is favorable for the imaging effect of the large aperture of the optical system, and the optical system is favorable for good imaging quality in a dark environment.
In an exemplary embodiment, at least one of the first lens to the third lens is a glass lens. In the field of lens manufacturing, the glass material has a wider refractive index range and larger selectivity. The glass material is used for manufacturing the lens, so that the performance of the lens can be effectively improved, and the lens can obtain a good imaging effect. At the same time, the coefficient of expansion of glass is small compared to plastic. The lens made of glass material in the system can better eliminate the temperature drift of the system.
In an exemplary embodiment, the optical imaging lens further includes a prism disposed between an image side surface of the third lens and an imaging surface of the optical imaging lens. In this embodiment, the prism can adjust the light path, is favorable to satisfying when the overlength focal length, reduces the length of camera lens, realizes that the camera lens is miniaturized.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be disposed between the first lens and the second lens. Alternatively, the stop may be disposed near the image side surface of the first lens or the stop may be disposed near the object side surface of the second lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.
In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspheric mirror surface, i.e., at least one of the object side surface of the first lens to the image side surface of the third lens is an aspheric mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, both the object-side surface and the image-side surface of the first lens are aspheric mirror surfaces.
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.
Exemplary embodiments of the present application also provide an electronic apparatus including the above-described imaging device.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although three lenses are exemplified in the embodiment, the optical imaging lens is not limited to including three lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 is a schematic view showing a structure of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 1
In the present embodiment, the total effective focal length f of the optical imaging lens is 27.50mm, and the maximum field angle FOV of the optical imaging lens is 11.3 °.
The object-side surface and the image-side surface of any one of the first lens E1 through the third lens E3 are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. In embodiment 1, both the object-side surface and the image-side surface of the first lens and the second lens are aspherical surfaces. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S4 used in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 3.5767E-03 | -6.4803E-05 | -1.4390E-05 | 3.2190E-06 | -3.1641E-07 | 1.6087E-08 | -3.5530E-10 | -3.1181E-13 | 8.9900E-14 |
| S2 | 5.9695E-03 | -1.4415E-04 | -4.3665E-05 | 1.1941E-05 | -1.4866E-06 | 1.0555E-07 | -4.3430E-09 | 9.7517E-11 | -9.7195E-13 |
| S3 | 3.0375E-03 | -2.0078E-04 | -3.3157E-05 | 1.1404E-05 | -1.5672E-06 | 1.2074E-07 | -5.3357E-09 | 1.2519E-10 | -1.2018E-12 |
| S4 | -5.3202E-03 | 6.8665E-04 | -1.5604E-04 | 3.2836E-05 | -4.8406E-06 | 4.6070E-07 | -2.6843E-08 | 8.6993E-10 | -1.2039E-11 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 26.90mm, and the maximum field angle FOV of the optical imaging lens is 11.5 °.
Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 3
In embodiment 2, both the object-side surface and the image-side surface of the first lens and the second lens of the first lens E1 to the third lens E3 are aspheric. Table 4 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S4 used in example 24、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.3608E-03 | 1.8347E-03 | -4.7970E-04 | 6.1214E-05 | -3.9533E-06 | 5.9751E-08 | 7.9600E-09 | -4.8566E-10 | 8.6156E-12 |
| S2 | 4.2261E-04 | 2.7887E-03 | -7.2733E-04 | 9.7176E-05 | -6.8477E-06 | 1.6271E-07 | 9.2346E-09 | -7.0099E-10 | 1.3418E-11 |
| S3 | 6.9822E-04 | 8.0484E-04 | -2.5955E-04 | 4.4356E-05 | -4.6927E-06 | 3.1583E-07 | -1.3172E-08 | 3.1023E-10 | -3.1540E-12 |
| S4 | -3.3872E-03 | 6.7372E-04 | -2.0064E-04 | 4.1011E-05 | -5.3866E-06 | 4.5400E-07 | -2.3740E-08 | 6.9948E-10 | -8.8617E-12 |
TABLE 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 27.50mm, and the maximum field angle FOV of the optical imaging lens is 11.3 °.
Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 5
In embodiment 3, both the object-side surface and the image-side surface of the first lens and the second lens of the first lens E1 to the third lens E3 are aspheric. Table 6 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S4 used in example 34、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.4997E-03 | 1.5998E-03 | -3.7653E-04 | 3.8689E-05 | -1.2170E-06 | -1.3425E-07 | 1.5738E-08 | -6.3833E-10 | 9.5334E-12 |
| S2 | 5.1692E-04 | 2.5014E-03 | -5.9174E-04 | 6.6590E-05 | -3.0652E-06 | -1.0706E-07 | 1.9882E-08 | -8.9467E-10 | 1.4168E-11 |
| S3 | 4.1820E-04 | 7.7404E-04 | -2.2635E-04 | 3.5778E-05 | -3.4967E-06 | 2.1543E-07 | -8.1367E-09 | 1.7186E-10 | -1.5540E-12 |
| S4 | -3.1286E-03 | 5.4574E-04 | -1.4096E-04 | 2.5731E-05 | -3.0101E-06 | 2.2157E-07 | -9.8565E-09 | 2.3949E-10 | -2.4061E-12 |
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 28.00mm, and the maximum field angle FOV of the optical imaging lens is 11.1 °.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 7
In embodiment 4, both the object-side surface and the image-side surface of the first lens and the second lens of the first lens E1 to the third lens E3 are aspheric. Table 8 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S4 used in example 44、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.6821E-03 | 1.2718E-03 | -2.6120E-04 | 1.7968E-05 | 9.4854E-07 | -2.6798E-07 | 2.0368E-08 | -7.1358E-10 | 9.8160E-12 |
| S2 | 1.2142E-03 | 2.0360E-03 | -4.5553E-04 | 4.4506E-05 | -1.0599E-06 | -1.9979E-07 | 2.1020E-08 | -8.3037E-10 | 1.2253E-11 |
| S3 | 5.8476E-04 | 6.7696E-04 | -2.0474E-04 | 3.2655E-05 | -3.2122E-06 | 1.9907E-07 | -7.5449E-09 | 1.5929E-10 | -1.4331E-12 |
| S4 | -2.8827E-03 | 4.5462E-04 | -1.1102E-04 | 1.9721E-05 | -2.2707E-06 | 1.6422E-07 | -7.0722E-09 | 1.6144E-10 | -1.4389E-12 |
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 31.62mm, and the maximum field angle FOV of the optical imaging lens is 9.8 °.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 9
In embodiment 5, the first lens and the third lens of the first lens E1 to the third lens E3The object side surface and the image side surface of the three lenses are both aspheric surfaces. Table 10 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1, S2, S5 and S6 in example 54、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.7957E-03 | 4.6069E-05 | -4.4034E-05 | 1.0871E-05 | -1.5160E-06 | 1.2598E-07 | -6.0986E-09 | 1.5669E-10 | -1.6472E-12 |
| S2 | 3.4994E-03 | 2.6869E-05 | -3.9663E-05 | 1.0315E-05 | -1.4922E-06 | 1.2891E-07 | -6.4868E-09 | 1.7343E-10 | -1.9000E-12 |
| S5 | 7.6556E-03 | -7.1371E-04 | 2.6379E-05 | 2.6478E-06 | -4.2666E-07 | 2.4281E-08 | -6.1769E-10 | 6.0156E-12 | -8.5159E-15 |
| S6 | -2.1532E-03 | 8.2491E-04 | -1.9767E-04 | 2.9486E-05 | -2.8184E-06 | 1.7237E-07 | -6.5437E-09 | 1.4175E-10 | -1.3442E-12 |
Watch 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 29.41mm, and the maximum field angle FOV of the optical imaging lens is 10.5 °.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 11
In embodiment 6, both the object-side surface and the image-side surface of the first lens and the second lens of the first lens E1 to the third lens E3 are aspheric. Table 12 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S4 used in example 64、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.7881E-04 | 1.1728E-03 | -2.0013E-04 | 8.2713E-06 | 1.6728E-06 | -2.7633E-07 | 1.8031E-08 | -5.6730E-10 | 7.0795E-12 |
| S2 | 9.1936E-04 | 1.6321E-03 | -3.5430E-04 | 3.3250E-05 | -6.6698E-07 | -1.4724E-07 | 1.4092E-08 | -5.1236E-10 | 6.9254E-12 |
| S3 | 1.9690E-03 | 4.3563E-04 | -1.7686E-04 | 3.1568E-05 | -3.3279E-06 | 2.1598E-07 | -8.4587E-09 | 1.8350E-10 | -1.6967E-12 |
| S4 | -1.5624E-03 | 3.3826E-04 | -1.2803E-04 | 3.0433E-05 | -4.3993E-06 | 3.8571E-07 | -1.9995E-08 | 5.6328E-10 | -6.6506E-12 |
TABLE 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 27.50mm, and the maximum field angle FOV of the optical imaging lens is 11.3 °.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
Watch 13
In embodiment 7, the object-side surface and the image-side surface of each of the first lens and the third lens of the first lens E1 to the third lens E3 are aspheric. Table 14 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1, S2, S5 and S6 in example 74、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.2320E-03 | 5.8510E-04 | -1.8398E-04 | 3.0833E-05 | -3.5575E-06 | 2.6401E-07 | -1.1763E-08 | 2.8675E-10 | -2.9497E-12 |
| S2 | 2.9556E-03 | 6.4668E-04 | -1.9549E-04 | 3.3455E-05 | -3.9939E-06 | 3.0985E-07 | -1.4626E-08 | 3.8627E-10 | -4.4442E-12 |
| S5 | 4.7735E-03 | 1.3814E-04 | -1.1915E-04 | 1.9149E-05 | -1.7254E-06 | 9.2408E-08 | -2.7768E-09 | 4.1044E-11 | -2.0168E-13 |
| S6 | -3.0512E-03 | 1.0173E-03 | -2.0903E-04 | 2.6911E-05 | -2.2766E-06 | 1.2405E-07 | -4.1265E-09 | 7.5882E-11 | -5.8520E-13 |
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 27.50mm, and the maximum field angle FOV of the optical imaging lens is 11.3 °.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
Watch 15
In embodiment 8, both the object-side surface and the image-side surface of the first lens and the third lens of the first lens E1 to the third lens E3 are aspheric. Table 16 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1, S2, S5 and S6 in example 84、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.8027E-03 | 5.3619E-05 | -1.8042E-06 | -9.0637E-06 | 1.8296E-06 | -1.8261E-07 | 1.0492E-08 | -3.2298E-10 | 4.0706E-12 |
| S2 | 3.4584E-03 | 7.3345E-05 | -4.4813E-06 | -8.2862E-06 | 1.6042E-06 | -1.4955E-07 | 7.9861E-09 | -2.2634E-10 | 2.5801E-12 |
| S5 | 5.0401E-03 | -1.5748E-04 | -1.8659E-05 | 2.4671E-06 | -1.6902E-07 | 7.7756E-09 | -1.7750E-10 | 1.3630E-12 | -6.6769E-15 |
| S6 | -2.6146E-03 | 7.0185E-04 | -1.1784E-04 | 1.3131E-05 | -1.0970E-06 | 6.6728E-08 | -2.6875E-09 | 6.3927E-11 | -6.8325E-13 |
TABLE 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 34.21mm, and the maximum field angle FOV of the optical imaging lens is 9.0 °.
Table 17 shows a basic parameter table of the optical imaging lens of example 9, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 17
In embodiment 9, the object-side surface and the image-side surface of each of the first lens and the third lens of the first lens E1 to the third lens E3 are aspheric. Table 18 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1, S2, S5 and S6 in example 94、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 2.3192E-03 | 5.1817E-04 | -1.2642E-04 | 9.9896E-06 | -3.5760E-07 | 1.8212E-09 | 3.5403E-10 | -1.3557E-11 | 1.7492E-13 |
| S2 | 2.8955E-03 | 5.5083E-04 | -1.2274E-04 | 7.2420E-06 | 7.2110E-08 | -3.1409E-08 | 1.7738E-09 | -4.5708E-11 | 4.7701E-13 |
| S5 | 4.8022E-03 | 3.2876E-04 | -1.4949E-04 | 2.2120E-05 | -1.8990E-06 | 1.0311E-07 | -3.5144E-09 | 6.9404E-11 | -6.1258E-13 |
| S6 | -3.5681E-03 | 1.1586E-03 | -1.9655E-04 | 2.1735E-05 | -1.5978E-06 | 7.8847E-08 | -2.5562E-09 | 5.0255E-11 | -4.6077E-13 |
Fig. 18A shows an on-axis chromatic aberration curve of an optical imaging lens of embodiment 9, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 9. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens according to embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 20D. Fig. 19 shows a schematic structural diagram of an optical imaging lens according to embodiment 10 of the present application.
As shown in fig. 19, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a stop STO, a second lens E2, a third lens E3, a prism E4, a filter E5, and an image plane S9.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. Filter E5 has an object side S7 and an image side S8. The light from the object sequentially passes through the respective surfaces S1 to S8 and is finally imaged on the imaging surface S9.
In the present embodiment, the total effective focal length f of the optical imaging lens is 27.84mm, and the maximum field angle FOV of the optical imaging lens is 11.1 °.
Table 19 shows a basic parameter table of the optical imaging lens of example 10, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).
Watch 19
In embodiment 10, the object-side surface and the image-side surface of each of the first lens and the third lens of the first lens E1 to the third lens E3 are aspheric. Table 20 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1, S2, S5 and S6 in example 104、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.3836E-03 | 1.6159E-04 | -1.3303E-04 | 4.0147E-05 | -5.9403E-06 | 4.8913E-07 | -2.2870E-08 | 5.6775E-10 | -5.8175E-12 |
| S2 | -1.8978E-03 | 1.8589E-04 | -1.3559E-04 | 4.0602E-05 | -5.9627E-06 | 4.8721E-07 | -2.2584E-08 | 5.5524E-10 | -5.6237E-12 |
| S5 | 3.9244E-03 | 3.0870E-04 | -1.8973E-04 | 3.9973E-05 | -4.8594E-06 | 3.5312E-07 | -1.4949E-08 | 3.3730E-10 | -3.1038E-12 |
| S6 | -3.3631E-03 | 1.1090E-03 | -2.6122E-04 | 4.2868E-05 | -4.6287E-06 | 3.1388E-07 | -1.2719E-08 | 2.7956E-10 | -2.5478E-12 |
Watch 20
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 20B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 10. Fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values corresponding to different image heights. Fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 10, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 20A to 20D, the optical imaging lens according to embodiment 10 can achieve good imaging quality.
In summary, examples 1 to 10 each satisfy the relationship shown in table 21.
| Conditions/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| BFL/Td | 4.90 | 5.76 | 5.87 | 6.11 | 6.83 | 6.02 | 6.45 | 6.37 | 5.91 | 6.31 |
| |V2-V3| | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 | 39.80 |
| tan(FOV) | 0.20 | 0.20 | 0.20 | 0.20 | 0.17 | 0.19 | 0.20 | 0.20 | 0.16 | 0.20 |
| EPD/ImgH | 2.87 | 2.81 | 2.87 | 2.92 | 3.24 | 3.07 | 2.87 | 2.87 | 3.24 | 2.91 |
| DT11/DT32 | 1.12 | 1.02 | 1.03 | 1.05 | 0.98 | 1.10 | 0.92 | 0.96 | 1.01 | 0.95 |
| f2/f3 | -1.12 | -2.23 | -2.25 | -1.95 | -0.57 | -1.50 | -0.35 | -0.26 | -0.46 | -0.36 |
| f/|f1| | 0.86 | 0.03 | 0.03 | 0.19 | 0.66 | 0.48 | 0.04 | 0.06 | 0.08 | 0.07 |
| |N2-N3| | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
| R4/R5 | 0.10 | 0.26 | 0.26 | 0.24 | 1.80 | 0.31 | 1.85 | 2.14 | 3.81 | 1.97 |
| (T12+T23)/Td | 0.42 | 0.41 | 0.39 | 0.39 | 0.73 | 0.41 | 0.63 | 0.70 | 0.57 | 0.64 |
| f/EPD | 3.54 | 3.54 | 3.54 | 3.54 | 3.61 | 3.54 | 3.54 | 3.54 | 3.90 | 3.54 |
TABLE 21
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 (25)
1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having an optical power; and
a third lens having optical power; wherein the content of the first and second substances,
a distance BFL from an image side surface of a third lens of the optical imaging lens to an imaging surface of the optical imaging lens on the optical axis and a distance Td from an object side surface of the first lens to the image side surface of the third lens on the optical axis satisfy: BFL/Td is more than or equal to 4.5 and less than or equal to 7.0.
2. The optical imaging lens of claim 1, wherein abbe number V2 of the second lens and abbe number V3 of the third lens satisfy: V2-V3| > 35.
3. The optical imaging lens of claim 1, wherein the maximum field angle FOV of the optical imaging lens satisfies:
TAN(FOV)<0.4。
4. the optical imaging lens of claim 1, wherein the entrance pupil diameter EPD of the optical imaging lens and the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy:
2.5<EPD/ImgH<3.5。
5. the optical imaging lens of claim 1, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT32 of the image side surface of the third lens satisfy:
0.9≤DT11/DT32≤1.2。
6. the optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy:
-2.5<f2/f3<0。
7. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy:
f/|f1|<1.0。
8. the optical imaging lens of claim 1, wherein the refractive index N2 of the second lens and the refractive index N3 of the third lens satisfy:
|N2-N3|<0.1。
9. the optical imaging lens of claim 1, wherein the radius of curvature R4 of the image-side surface of the second lens and the radius of curvature R5 of the object-side surface of the third lens satisfy:
0<R4/R5<4。
10. the optical imaging lens of claim 1, wherein a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, and a distance Td on the optical axis from an object side surface of the first lens to an image side surface of the third lens satisfy:
(T12+T23)/Td<1.0。
11. the optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
3.0<f/EPD<4.5。
12. the optical imaging lens according to claim 1, characterized in that at least one of the first to third lenses is a glass lens.
13. The optical imaging lens of claim 1, further comprising a prism disposed between an image side surface of the third lens and an imaging surface of the optical imaging lens.
14. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having an optical power;
a second lens having an optical power; and
a third lens having optical power; wherein the content of the first and second substances,
the entrance pupil diameter EPD of the optical imaging lens and a half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy:
2.5<EPD/ImgH<3.5。
15. the optical imaging lens of claim 14, wherein abbe number V2 of the second lens and abbe number V3 of the third lens satisfy: V2-V3| > 35.
16. The optical imaging lens of claim 14, wherein the maximum field angle FOV of the optical imaging lens satisfies:
TAN(FOV)<0.4。
17. the optical imaging lens of claim 14, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT32 of the image side surface of the third lens satisfy:
0.9≤DT11/DT32≤1.2。
18. the optical imaging lens of claim 14, wherein the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy:
-2.5<f2/f3<0。
19. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy:
f/|f1|<1.0。
20. the optical imaging lens of claim 14, wherein the refractive index N2 of the second lens and the refractive index N3 of the third lens satisfy:
|N2-N3|<0.1。
21. the optical imaging lens of claim 14, wherein the radius of curvature R4 of the image side surface of the second lens and the radius of curvature R5 of the object side surface of the third lens satisfy:
0<R4/R5<4。
22. the optical imaging lens of claim 14, wherein a separation distance T12 on the optical axis between the first lens and the second lens, a separation distance T23 on the optical axis between the second lens and the third lens, and a distance Td on the optical axis between an object side surface of the first lens and an image side surface of the third lens satisfy:
(T12+T23)/Td<1.0。
23. the optical imaging lens of claim 14, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy:
3.0<f/EPD<4.5。
24. the optical imaging lens of claim 14, wherein at least one of the first to third lenses is a glass lens.
25. The optical imaging lens of claim 14, further comprising a prism disposed between an image side surface of the third lens and an imaging surface of the optical imaging lens.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589475A (en) * | 2021-07-02 | 2021-11-02 | 支付宝(杭州)信息技术有限公司 | Projection lens suitable for 3D face recognition |
| CN115166936A (en) * | 2022-06-28 | 2022-10-11 | 江西晶超光学有限公司 | Optical system, lens module and electronic equipment |
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2019
- 2019-09-17 CN CN201921540441.5U patent/CN210666168U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589475A (en) * | 2021-07-02 | 2021-11-02 | 支付宝(杭州)信息技术有限公司 | Projection lens suitable for 3D face recognition |
| CN115166936A (en) * | 2022-06-28 | 2022-10-11 | 江西晶超光学有限公司 | Optical system, lens module and electronic equipment |
| CN115166936B (en) * | 2022-06-28 | 2023-11-07 | 江西晶超光学有限公司 | Optical system, lens module and electronic equipment |
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