CN114035305B - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN114035305B CN114035305B CN202111385612.3A CN202111385612A CN114035305B CN 114035305 B CN114035305 B CN 114035305B CN 202111385612 A CN202111385612 A CN 202111385612A CN 114035305 B CN114035305 B CN 114035305B
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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
- G02B13/004—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 four lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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Abstract
The application provides an optical imaging lens, which sequentially comprises a diaphragm, a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis, wherein the first lens has optical power, and the curvature radius of the object side is variable; and the second lens, the third lens, and the fourth lens have optical powers.
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
In recent years, with the progress of technology, interactive devices and optical imaging lenses contained therein have been developed rapidly, and in order to be suitable for information transfer between interactive devices, special optical imaging lenses are required for docking, and the optical imaging lenses not only ensure lens performance, but also ensure accuracy of information in front-rear transmission processes. Therefore, designing an optical imaging lens that can accept a front-end optical system and connect with a subsequent optical system, ensures that information of the front-end optical system is accurately transferred to the subsequent optical system, and miniaturizes the optical imaging lens is one of the problems to be solved in the field.
Disclosure of Invention
The application provides an optical imaging lens which sequentially comprises a diaphragm, a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis, wherein the first lens has optical power, and the curvature radius of the object side is variable; and the second lens, the third lens, and the fourth lens have optical powers. In some embodiments, the optical imaging lens further includes an electron photosensitive assembly, and a maximum incidence angle CRAmax of the chief ray to the electron photosensitive assembly satisfies: 0.7 < CRAMax < 3.0.
In some embodiments, the second lens has positive optical power, with the object-side surface being concave and the image-side surface being convex.
In some embodiments, the third lens has a negative optical power, and the object-side surface thereof is concave.
In some embodiments, the fourth lens has positive optical power, and its object-side surface is convex.
In some embodiments, a distance OBJ from the object to the first lens object side satisfies: OBJ >150mm.
In some embodiments, the radius of curvature R1 of the object side surface of the first lens satisfies: r1 is more than 40mm and less than 77mm.
In some embodiments, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 1.9.
In some embodiments, half of the maximum field angle Semi-FOV of the optical imaging lens satisfies: the Semi-FOV is more than 40 degrees.
In some embodiments, the wavelength λ of the incident light of the optical imaging lens satisfies: lambda > 850nm.
In some embodiments, the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy: V2-V3 is less than 15.
In some embodiments, the material of the second lens is the same as the material of the fourth lens.
In some embodiments, the abbe number V2 of the second lens and the abbe number V4 of the fourth lens satisfy: v2=v4 < 50.
In some embodiments, the relative illuminance RI of the maximum field angle of the optical imaging lens satisfies: RI > 45%.
In some embodiments, the first lens includes: the lens comprises a bendable film, a focal length adjusting layer and a light-transmitting module, wherein the bendable film forms an object side surface of the first lens, and the focal length adjusting layer and the light-transmitting module are glued.
The application also provides an optical imaging lens sequentially comprising from an object side to an image side along an optical axis
A diaphragm, a first lens, a second lens, a third lens and a fourth lens, wherein,
the first lens is provided with a first lens with focal power, and the curvature radius of the object side surface of the first lens is variable;
the second lens has optical power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; and
the third lens and the fourth lens have optical power.
In some embodiments, the optical imaging lens further includes an electron photosensitive assembly, and a maximum incidence angle CRAmax of the chief ray to the electron photosensitive assembly satisfies: 0.7 < CRAMax < 3.0.
In some embodiments, the third lens has a negative optical power, and the object-side surface thereof is concave.
In some embodiments, the fourth lens has positive optical power, and its object-side surface is convex.
In some embodiments, a distance OBJ from the object to the first lens object side satisfies: OBJ >150mm.
In some embodiments, the radius of curvature R1 of the object side surface of the first lens satisfies: r1 is more than 40mm and less than 77mm.
In some embodiments, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 1.9.
In some embodiments, half of the maximum field angle Semi-FOV of the optical imaging lens satisfies: the Semi-FOV is more than 40 degrees.
In some embodiments, the wavelength λ of the incident light of the optical imaging lens satisfies: lambda > 850nm.
In some embodiments, the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy: V2-V3 is less than 15.
In some embodiments, the material of the second lens is the same as the material of the fourth lens.
In some embodiments, the abbe number V2 of the second lens and the abbe number V4 of the fourth lens satisfy: v2=v4 < 50.
In some embodiments, the relative illuminance RI of the maximum field angle of the optical imaging lens satisfies: RI > 45%.
In some embodiments, the first lens includes: the lens comprises a bendable film, a focal length adjusting layer and a light-transmitting module, wherein the bendable film forms an object side surface of the first lens, and the focal length adjusting layer and the light-transmitting module are glued.
The four-lens structure is adopted, and at least one beneficial effect such as information transmission and miniaturization between the front-end optical system and the rear-end optical system is achieved when the optical imaging lens meets imaging requirements by reasonably distributing focal power, surface type, center thickness of each lens, axial distance between each lens and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve of the optical imaging lens of example 7 at the time of object distance infinity, respectively;
fig. 15A to 15D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve of the optical imaging lens of example 7 at an object distance of 350mm, respectively;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a magnification chromatic aberration curve, and a relative illuminance curve of the optical imaging lens of example 7 at an object distance of 150mm, respectively;
fig. 17A shows a schematic structural view of a first lens of an exemplary embodiment in the present application; and
fig. 17B shows a schematic structural view of a first lens of another exemplary embodiment in the present application.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, four lenses having optical power, i.e., a first lens, a second lens, a third lens, and a fourth lens. The four lenses are sequentially arranged from the object side to the image side along the optical axis. In the first lens to the fourth lens, an air space may be provided between any adjacent two lenses. The optical imaging lens may further include optics (not shown) for turning the light, such as turning prisms and mirrors.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be disposed at a proper position as needed to control the light entering amount of the optical imaging lens, for example, disposed between the object side and the first lens.
In an exemplary embodiment, the first lens may have positive or negative optical power; the second lens element with positive refractive power has a concave object-side surface and a convex image-side surface; the third lens can have negative focal power, and the object side surface of the third lens is a concave surface; the fourth lens can have positive focal power, the object side surface of the fourth lens is a convex surface, and the imaging effect can be effectively improved by reasonably distributing the positive and negative focal power of each lens of the optical imaging lens.
In addition, the first lens has automatic focusing capability, the curvature radius of the object side surface of the first lens can be changed, the optical power of the optical imaging lens can be reasonably distributed, the integral aberration of the optical imaging lens can be optimized, the imaging quality of the optical imaging lens can be improved, and the different surface types of the second lens, the third lens and the fourth lens can be controlled, so that the aberration of the optical imaging lens can be balanced. The first lens can be further provided with a film layer on the object side surface, the curvature of the film layer can be changed along with the change of voltage, and the optical imaging lens can automatically focus under different object distances on the premise that the total length of the optical imaging lens is not changed, so that the optical imaging lens is lighter and thinner. The second lens has positive focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface, so that the increase of the angle of view is facilitated, meanwhile, the incident angle of the light rays at the position of the compression diaphragm is also facilitated, the pupil aberration is reduced, and the imaging quality is improved; the third lens has negative focal power, so that the coma and astigmatism of the optical imaging lens can be reduced; the fourth lens has positive focal power, and the spherical aberration of the control system is in a reasonable level, so that the on-axis view field obtains good imaging quality.
In an exemplary embodiment, the optical imaging lens may satisfy 0.7 < CRAmax < 3.0, where CRAmax is a maximum incidence angle of the chief ray to the electron-sensitive component. The optical imaging lens satisfies 0.7 < CRAMax < 3.0, is favorable for the optical imaging lens to tend to telecentricity, and can make the optical imaging lens lose light information as little as possible. More specifically, CRAmax may satisfy: 1.0 < CRAMax < 3.0.
In an exemplary embodiment, the optical imaging lens may satisfy OBJ >150mm, where OBJ is a distance of a subject to an object side surface from the first lens. The optical imaging lens satisfies the condition that the OBJ is more than 150mm, and is favorable for controlling the object distance of the optical imaging lens, and the larger the object distance is, the larger the imaging clear range of the optical imaging lens is.
In an exemplary embodiment, the optical imaging lens may satisfy 40mm < R1 < 77mm, where R1 is a radius of curvature of the object side surface of the first lens. The optical imaging lens satisfies R1 which is more than 40mm and less than 77mm, and is beneficial to controlling the off-axis aberration of the optical imaging lens. More specifically, R1 may satisfy: r1 is more than 65mm and less than 77mm.
In an exemplary embodiment, the optical imaging lens may satisfy f/EPD < 1.9, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. The optical imaging lens satisfies F/EPD < 1.9, is favorable for obtaining a better F number and a larger light inlet amount under the condition of the same focal length, and improves the illuminance of an image plane and the response of a chip, thereby reducing the power consumption of the system. More specifically, the f/EPD may satisfy: 1.5 < f/EPD < 1.9.
In an exemplary embodiment, the optical imaging lens may satisfyWherein, semi-FOV is half of the maximum field angle of the optical imaging lens. The optical imaging lens satisfies->The method is favorable for obtaining a larger view field range and improving the capturing capability of the optical imaging lens group on object space information. More specifically, the Semi-FOV may satisfy:
in an exemplary embodiment, the optical imaging lens may satisfy λ > 850nm, where λ is a wavelength of incident light of the optical imaging lens. The optical imaging lens satisfies lambda > 850nm, and is favorable for the system to acquire information of infrared wave bands. More specifically, λ may satisfy: 850nm < lambda < 1100nm, for example 925nm,940nm and 955nm.
In an exemplary embodiment, the optical imaging lens may satisfy V2-V3 < 15, where V2 is the abbe number of the second lens and V3 is the abbe number of the third lens. The optical imaging lens satisfies V2-V3 < 15, which is beneficial to controlling the overall chromatic aberration of the optical imaging lens. More specifically, V2 and V3 may satisfy: V2-V3 is more than 10 and less than 15.
In an exemplary embodiment, in the optical imaging lens, a material of the second lens may be the same as a material of the fourth lens. The optical imaging lens may satisfy v2=v4 < 50, where V2 is the abbe number of the second lens and V4 is the abbe number of the fourth lens. The optical imaging lens meets the conditions, and is favorable for reducing the chromatic aberration of the whole optical imaging lens by matching with other lenses.
In an exemplary embodiment, the optical imaging lens may satisfy RI > 45%, where RI is the relative illuminance of the maximum field angle of the optical imaging lens. The optical imaging lens satisfies RI > 45%, which is beneficial to ensuring that the optical imaging lens is not distorted.
In an exemplary embodiment, the first lens may include, in order along the optical axis: the lens comprises a bendable film, a focal length adjusting layer and a light transmission module, wherein the bendable film can be arranged on the object side surface of the first lens; and the image side surface of the focal length adjusting layer is glued with the light transmitting module. According to an exemplary embodiment of the present application, the first lens includes a flexible film, a focus adjustment layer, and a light-transmitting module. Fig. 17A shows a schematic structural view of the first lens in the present application. The first lens includes a flexible film T1, a focus adjustment layer T2, and a light-transmitting module T3. Fig. 17B shows a schematic structural view of a first lens of another exemplary embodiment in the present application. The first lens includes a flexible film T11, a focus adjustment layer T22, and a light-transmitting module T33. Specifically, the focus adjustment layer T22 may be disposed between the flexible film T11 and the light-transmitting module T33, and the focus adjustment layer T22 may be connected to a conductive material (not shown). When voltage is applied to the conductive material from the outside, the object side surface of the focal length adjusting layer T22 can deform, so as to drive the flexible film T11 to deform, so that the focal length of the first lens is changed, and the automatic focusing function of the lens under different object distances can be realized on the premise of not changing the total length of the optical imaging lens, so that the optical imaging lens becomes lighter and thinner. It should be understood that the focal length adjusting layer in the present application is not specifically limited to include only one material, and in actual production, in order to reasonably adjust the total effective focal length of the optical imaging lens, various focal length adjusting layers, such as a first focal length adjusting layer, a second focal length adjusting layer, and the like, may be disposed between the flexible film and the light transmitting module according to specific needs. And the first focal length adjusting layer, the second focal length adjusting layer and the like are mutually insoluble. When voltage is applied to the conductive material, the focal length adjusting layer can be deformed, so that the bendable film and the contact surface type of the first focal length adjusting layer and the second focal length adjusting layer are driven to change, the focal length of the first lens is changed, and the total effective focal length of the optical imaging lens can be adjusted.
In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, for example, four lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the volume of the optical imaging lens can be effectively reduced, the sensitivity of the optical imaging lens can be reduced, and the processability of the optical imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The optical imaging lens according to the embodiment of the application also has the function of realizing the transmission and miniaturization of information between the front-end optical system and the rear-end optical system while satisfying imaging requirements.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the fourth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of the object side surface and the image side surface of the first lens, the second lens, the third lens and the fourth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of the second lens element, the third lens element and the fourth lens element are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although four lenses are described as an example in the embodiment, the optical imaging lens is not limited to include four lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the total effective focal length f of the optical imaging lens is 1.12mm, the distance TTL between the object side surface and the imaging surface of the first lens along the optical axis is 3.18mm, half of the diagonal length ImgH of the effective pixel region on the imaging surface is 0.85mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is
In embodiment 1, the aspherical surface profile x included in the object side surface and the image side surface of the lens in the first lens E1 to the fourth lens E4 can be defined by, but not limited to, the following aspherical surface formulae:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S5 to S10 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.1980E-02 | -1.0333E-03 | 5.8382E-04 | 1.2201E-04 | 6.1535E-05 | 4.6439E-06 | 4.1470E-07 | 1.0330E-06 | 2.2974E-06 |
| S6 | -8.4471E-02 | 6.3812E-03 | 6.7452E-03 | 1.6928E-03 | 1.5392E-03 | 2.9690E-04 | 1.1179E-04 | -1.6064E-06 | -3.1319E-05 |
| S7 | -6.5573E-02 | 1.1248E-02 | 5.9916E-03 | -2.4987E-04 | 3.3045E-03 | -1.5012E-03 | 3.8271E-04 | -3.9522E-04 | 7.8825E-05 |
| S8 | -3.9368E-01 | -2.0045E-02 | -2.2968E-03 | -9.4177E-03 | 4.3363E-03 | -2.6221E-03 | 1.5146E-03 | -4.5773E-04 | 3.5321E-04 |
| S9 | 1.6772E-01 | -3.0197E-02 | 2.3816E-03 | -2.7074E-03 | 1.1191E-03 | -6.4622E-04 | 2.0205E-04 | -1.3605E-04 | 2.4397E-05 |
| S10 | 3.6416E-01 | -5.3710E-02 | 6.7447E-03 | 9.0325E-04 | 9.2482E-05 | 5.5663E-04 | -2.3348E-04 | 1.6293E-04 | -2.3549E-05 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 2D shows the relative illuminance curves of the optical imaging lens of embodiment 1, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In embodiment 2, an optical imaging lensThe total effective focal length f is 1.12mm, the distance TTL from the object side surface of the first lens to the imaging surface along the optical axis is 3.19mm, half of the diagonal line length ImgH of the effective pixel area on the imaging surface is 0.85mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.1881E-02 | -1.0337E-03 | 5.8149E-04 | 1.2609E-04 | 6.2582E-05 | 6.2761E-06 | -2.9178E-07 | 1.2031E-06 | 2.1404E-06 |
| S6 | -8.4296E-02 | 6.3684E-03 | 6.7399E-03 | 1.6933E-03 | 1.5585E-03 | 3.0002E-04 | 1.0980E-04 | -2.5841E-06 | -3.1958E-05 |
| S7 | -6.5458E-02 | 1.1261E-02 | 5.9574E-03 | -2.2040E-04 | 3.3236E-03 | -1.5275E-03 | 3.8475E-04 | -3.9331E-04 | 7.9765E-05 |
| S8 | -3.9471E-01 | -1.9672E-02 | -2.4909E-03 | -9.3305E-03 | 4.3312E-03 | -2.6284E-03 | 1.5133E-03 | -4.5747E-04 | 3.5279E-04 |
| S9 | 1.6689E-01 | -3.0448E-02 | 2.2700E-03 | -2.6813E-03 | 1.1566E-03 | -6.4305E-04 | 2.0691E-04 | -1.3466E-04 | 2.5911E-05 |
| S10 | 3.6344E-01 | -5.4177E-02 | 6.6354E-03 | 1.0328E-03 | 1.1801E-04 | 5.5727E-04 | -2.3356E-04 | 1.7060E-04 | -2.0980E-05 |
TABLE 4 Table 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 4D shows the relative illuminance curves of the optical imaging lens of embodiment 2, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In practiceIn embodiment 2, the total effective focal length f of the optical imaging lens is 1.12mm, the distance TTL between the object side surface of the first lens and the imaging surface along the optical axis is 3.19mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface is 0.85mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.1634E-02 | -9.5930E-04 | 6.3982E-04 | 1.4113E-04 | 7.5592E-05 | 9.0894E-06 | -1.9075E-06 | 1.1844E-06 | 2.0495E-06 |
| S6 | -8.3502E-02 | 6.4192E-03 | 6.8729E-03 | 1.7204E-03 | 1.6728E-03 | 3.1322E-04 | 1.0664E-04 | -8.7804E-06 | -3.4311E-05 |
| S7 | -6.4778E-02 | 1.1302E-02 | 5.7992E-03 | -9.6755E-05 | 3.4208E-03 | -1.6664E-03 | 4.0914E-04 | -3.9727E-04 | 8.5999E-05 |
| S8 | -4.0009E-01 | -1.7996E-02 | -3.2074E-03 | -9.0858E-03 | 4.4978E-03 | -2.7339E-03 | 1.5816E-03 | -4.7521E-04 | 3.5660E-04 |
| S9 | 1.6394E-01 | -3.0929E-02 | 2.0958E-03 | -2.9060E-03 | 1.3587E-03 | -7.1917E-04 | 2.3640E-04 | -1.3867E-04 | 3.0891E-05 |
| S10 | 3.6128E-01 | -5.3373E-02 | 6.7359E-03 | 1.2543E-03 | 3.6131E-04 | 5.9675E-04 | -2.0883E-04 | 2.2718E-04 | -2.3957E-06 |
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 6D shows the relative illuminance curves of the optical imaging lens of embodiment 3, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In embodiment 4, the total effective focal length f of the optical imaging lens is 1.12mm, the distance TTL between the object side surface and the imaging surface of the first lens along the optical axis is 3.16mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 0.85mm, and the half of the maximum field angle Semi-FOV of the optical imaging lens is
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.1861E-02 | -7.4622E-04 | 7.1191E-04 | 1.5725E-04 | 6.8933E-05 | 6.9039E-06 | -2.2651E-06 | 9.8167E-07 | 3.3049E-06 |
| S6 | -8.3379E-02 | 6.5997E-03 | 7.0645E-03 | 1.8084E-03 | 1.6837E-03 | 3.4232E-04 | 1.1106E-04 | -2.4018E-05 | -4.2711E-05 |
| S7 | -6.4365E-02 | 1.1206E-02 | 5.6979E-03 | -2.9450E-06 | 3.5039E-03 | -1.6643E-03 | 3.3031E-04 | -4.2674E-04 | 1.1251E-04 |
| S8 | -4.0300E-01 | -1.6770E-02 | -3.3515E-03 | -9.1893E-03 | 4.8357E-03 | -2.7625E-03 | 1.6137E-03 | -5.3842E-04 | 3.7260E-04 |
| S9 | 1.6018E-01 | -3.0517E-02 | 2.0561E-03 | -3.6230E-03 | 1.4507E-03 | -7.8940E-04 | 2.5223E-04 | -1.8681E-04 | 3.2328E-05 |
| S10 | 3.5790E-01 | -4.9104E-02 | 7.0276E-03 | 9.4332E-04 | 6.9178E-04 | 8.1187E-04 | -1.6324E-04 | 2.4370E-04 | 1.4890E-05 |
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 8D shows the relative illuminance curves of the optical imaging lens of embodiment 4, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In embodiment 5, the total effective focal length f of the optical imaging lens is 1.12mm, and the distance TTL between the object side surface and the imaging surface along the optical axis of the first lens is 3.14mmHalf of the diagonal line length ImgH of the effective pixel area on the imaging surface is 0.85mm, and half of the maximum field angle of the optical imaging lens is Semi-FOV
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.2541E-02 | -7.5340E-04 | 6.8943E-04 | 1.4416E-04 | 6.4392E-05 | 7.4964E-06 | 1.3022E-06 | -6.3586E-07 | 2.9754E-06 |
| S6 | -8.4129E-02 | 6.7618E-03 | 7.1278E-03 | 1.8989E-03 | 1.6602E-03 | 4.0207E-04 | 1.5151E-04 | -8.8484E-06 | -3.7252E-05 |
| S7 | -6.4119E-02 | 1.1203E-02 | 5.7952E-03 | -1.0919E-04 | 3.4398E-03 | -1.5056E-03 | 2.6806E-04 | -4.2553E-04 | 1.1755E-04 |
| S8 | -3.9215E-01 | -2.0352E-02 | -1.6674E-03 | -9.9510E-03 | 4.8865E-03 | -2.7001E-03 | 1.5817E-03 | -5.3472E-04 | 3.9250E-04 |
| S9 | 1.6220E-01 | -2.9905E-02 | 2.6917E-03 | -3.5866E-03 | 1.0465E-03 | -7.9374E-04 | 1.5179E-04 | -2.0667E-04 | 2.6192E-05 |
| S10 | 3.5478E-01 | -4.6122E-02 | 7.3215E-03 | 3.9805E-04 | 1.4094E-04 | 6.8544E-04 | -2.2842E-04 | 1.4297E-04 | -1.4038E-05 |
Table 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 10D shows the relative illuminance curves of the optical imaging lens of embodiment 5, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In embodiment 6, the total effective focal length f of the optical imaging lens is 1.14mm, the distance TTL between the object side surface and the imaging surface of the first lens along the optical axis is 3.22mm, half of the diagonal length ImgH of the effective pixel region on the imaging surface is 0.85mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -4.5043E-02 | -3.0042E-03 | 6.2878E-04 | 2.3150E-04 | 3.3647E-05 | -1.6681E-05 | -1.1562E-05 | -2.8056E-06 | -2.5539E-06 |
| S6 | -9.9144E-02 | 7.5783E-03 | 9.7709E-03 | 2.4859E-03 | 1.0735E-03 | -9.4460E-05 | -1.5107E-04 | -9.8150E-05 | -6.5582E-05 |
| S7 | -8.8910E-02 | 1.6657E-02 | 1.0656E-02 | -2.8162E-03 | 2.4985E-03 | -1.3329E-03 | 4.2617E-04 | -3.1787E-04 | 7.5566E-05 |
| S8 | -3.8363E-01 | -6.2244E-03 | -9.9167E-03 | -6.7383E-03 | 1.0378E-03 | -1.7618E-03 | 4.8597E-04 | -3.0217E-04 | 6.2967E-05 |
| S9 | 2.6303E-01 | -1.6084E-02 | 5.4021E-03 | -2.3454E-03 | 3.4674E-04 | -8.8584E-04 | -1.1576E-05 | -2.3065E-04 | -3.4249E-07 |
| S10 | 3.1772E-01 | -4.2132E-02 | 5.8714E-03 | -2.9201E-03 | -8.8823E-04 | -5.4949E-04 | -3.7330E-04 | 5.0131E-05 | 4.8621E-05 |
Table 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 12D shows the relative illuminance curves of the optical imaging lens of embodiment 6, which represent the relative illuminance corresponding to different image source heights. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 16D. Fig. 13 shows a schematic structural diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4 and filter E5.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S4 thereof is planar. The second lens element E2 has positive refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The filter E5 has an object side surface S11 and an image side surface S12. The optical imaging lens has an imaging surface S13, and light from an object sequentially passes through the respective surfaces S1 to S12 and is finally imaged on the imaging surface S13.
In embodiment 6, the total effective focal length f of the optical imaging lens is 1.14mm, the distance TTL between the object side surface and the imaging surface of the first lens along the optical axis is 3.23mm, the half of the diagonal length ImgH of the effective pixel area on the imaging surface is 0.85mm, and the half of the maximum field angle Semi-FOV of the optical imaging lens is
Table 13 shows a basic parameter table of the optical imaging lens of example 7 at an object distance of infinity, wherein the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows a basic parameter table of the first lens at an object distance of 350mm for the optical imaging lens of example 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 15 shows a basic parameter table of the first lens at an object distance of 150mm for the optical imaging lens of example 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 16 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 13
TABLE 14
TABLE 15
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S5 | -3.2473E-02 | -5.1939E-04 | 1.3593E-03 | 1.5247E-04 | 1.5177E-04 | -1.7093E-05 | -2.6929E-05 | 5.1071E-05 | 4.3707E-05 |
| S6 | -8.8470E-02 | 1.4591E-02 | 1.2450E-02 | 1.8277E-03 | 2.7882E-03 | -6.4515E-04 | -5.2493E-04 | -2.9248E-04 | -6.1872E-06 |
| S7 | -6.8954E-02 | 1.7902E-02 | 7.3905E-03 | 7.6250E-04 | 4.8415E-03 | -4.9629E-03 | 1.2605E-03 | -1.6137E-04 | -1.6362E-04 |
| S8 | -4.5612E-01 | -1.0623E-02 | -1.1565E-02 | -5.7714E-03 | 6.1591E-03 | -4.2912E-03 | 1.7551E-03 | 3.2613E-04 | -2.7897E-04 |
| S9 | 1.5485E-01 | -3.8358E-02 | 5.8036E-03 | 6.0047E-03 | 5.4531E-03 | -4.0234E-03 | -1.1544E-03 | -6.6709E-04 | -7.1135E-04 |
| S10 | 3.3383E-01 | -4.4387E-02 | 6.8274E-03 | 8.8359E-03 | 5.5429E-03 | 1.7438E-03 | 1.5090E-03 | 1.9140E-03 | 5.5011E-04 |
Table 16
In summary, examples 1 to 7 each satisfy the relationship shown in table 16.
TABLE 17
The present application also provides an imaging device, the electron-sensitive element of which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or may be an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It should be understood by those skilled in the art that the scope of protection referred to in this application is not limited to the specific combination of the above technical features, but also encompasses other technical solutions formed by any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (22)
1. The optical imaging lens is characterized by comprising a diaphragm, a first lens, a second lens, a third lens and a fourth lens in sequence from an object side to an image side along an optical axis, wherein,
the first lens has positive focal power, and the curvature radius of the object side surface of the first lens is variable; and
the second lens has positive optical power;
the third lens has negative focal power, and the object side surface of the third lens is a concave surface;
the fourth lens has positive focal power;
wherein, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 1.9;
half of the half-FOV of the maximum field angle of the optical imaging lens satisfies: the Semi-FOV is more than 40 degrees;
the incident light of the optical imaging lens is infrared light; and
the number of lenses having optical power in the optical imaging lens is four.
2. The optical imaging lens of claim 1, further comprising an electron-sensitive component, wherein a maximum incidence angle CRAmax of principal rays of light into the electron-sensitive component satisfies:
0.7＜CRAmax＜3.0。
3. the optical imaging lens of claim 1, wherein an object side surface of the fourth lens is convex.
4. The optical imaging lens according to claim 1, wherein a distance OBJ from an object to an object side of the first lens satisfies:
OBJ>150mm。
5. the optical imaging lens of claim 1, wherein a radius of curvature R1 of an object side surface of the first lens satisfies:
40mm＜R1＜77mm。
6. the optical imaging lens of claim 1, wherein a wavelength λ of incident light of the optical imaging lens satisfies:
λ＞850nm。
7. the optical imaging lens according to claim 1, wherein an abbe number V2 of the second lens and an abbe number V3 of the third lens satisfy:
V2-V3＜15。
8. the optical imaging lens of claim 1, wherein a material of the second lens is the same as a material of the fourth lens.
9. The optical imaging lens according to claim 1, wherein an abbe number V2 of the second lens and an abbe number V4 of the fourth lens satisfy:
V2=V4＜50。
10. the optical imaging lens of claim 1, wherein the relative illuminance RI of the maximum field angle of the optical imaging lens satisfies:
RI＞45%。
11. the optical imaging lens of claim 1, wherein the first lens comprises: the lens comprises a bendable film, a focal length adjusting layer and a light-transmitting module, wherein the bendable film forms an object side surface of the first lens, and the focal length adjusting layer and the light-transmitting module are glued.
12. The optical imaging lens is characterized by comprising a diaphragm, a first lens, a second lens, a third lens and a fourth lens in sequence from an object side to an image side along an optical axis, wherein,
the first lens has positive focal power, and the curvature radius of the object side surface of the first lens is variable;
the second lens has positive focal power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; and
the third lens has negative focal power, and the object side surface of the third lens is a concave surface;
the fourth lens has positive focal power;
wherein, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 1.9;
half of the half-FOV of the maximum field angle of the optical imaging lens satisfies: the Semi-FOV is more than 40 degrees;
the incident light of the optical imaging lens is infrared light; and
the number of lenses having optical power in the optical imaging lens is four.
13. The optical imaging lens of claim 12, further comprising an electron-sensitive component, wherein a maximum incidence angle CRAmax of chief rays into the electron-sensitive component satisfies:
0.7＜CRAmax＜3.0。
14. the optical imaging lens of claim 12, wherein an object side surface of the fourth lens element is convex.
15. The optical imaging lens according to claim 12, wherein a distance OBJ from an object to an object side of the first lens satisfies:
OBJ>150mm。
16. the optical imaging lens of claim 12, wherein the radius of curvature R1 of the object side surface of the first lens satisfies:
40mm＜R1＜77mm。
17. the optical imaging lens of claim 12, wherein a wavelength λ of incident light of the optical imaging lens satisfies:
λ＞850nm。
18. the optical imaging lens of claim 12, wherein the abbe number V2 of the second lens and the abbe number V3 of the third lens satisfy:
V2-V3＜15。
19. the optical imaging lens of claim 12, wherein a material of the second lens is the same as a material of the fourth lens.
20. The optical imaging lens of claim 12, wherein the abbe number V2 of the second lens and the abbe number V4 of the fourth lens satisfy:
V2=V4＜50。
21. the optical imaging lens of claim 12, wherein the relative illuminance RI of the maximum field angle of the optical imaging lens satisfies:
RI＞45%。
22. the optical imaging lens of claim 12, wherein the first lens comprises: the lens comprises a bendable film, a focal length adjusting layer and a light-transmitting module, wherein the bendable film forms an object side surface of the first lens, and the focal length adjusting layer and the light-transmitting module are glued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN110531490A (en) * | 2019-08-16 | 2019-12-03 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| CN111897112A (en) * | 2020-09-29 | 2020-11-06 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
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| JP2006126740A (en) * | 2004-11-01 | 2006-05-18 | Fujinon Corp | Photographic optical system having focus function |
| KR100714583B1 (en) * | 2006-03-30 | 2007-05-07 | 삼성전기주식회사 | Optical system for autofocusing of camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110531490A (en) * | 2019-08-16 | 2019-12-03 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| CN111897112A (en) * | 2020-09-29 | 2020-11-06 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
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