Optical imaging lens, camera module and electronic equipment

Abstract

The utility model provides an optical imaging lens, camera module and electronic equipment wherein the optical imaging lens comprises six lenses arranged in order from the object side to the image side, the first lens and the fourth lens are glass spherical lenses, the other lenses are plastic aspheric surfaces, and the optical imaging lens satisfies: TTL < = 22mm, 2.5 mlt; eFLlt, EFLlt; 2.6 mm, FOVgt; tTL is the total mechanism length of the optical imaging lens, EFL is the combined focal length of the optical imaging lens, FOV is the field angle of the optical imaging lens, and Fno is the aperture value of the optical imaging lens. By adopting a 2G4P glass-plastic mixed structure, the optical TTL is smaller than 22mm, the length of the lens can be effectively shortened, the system performance can be maintained, the overall size of the lens is reduced, and the lens is convenient to install and use; a FOVgt; and the MTF of the optical imaging lens at 125lp / mm is greater than 0.5, so that the optical imaging lens has good imaging quality.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging lenses, and in particular to an optical imaging lens, a camera module and an electronic device. Background Art

[0002] With the rise of various smart devices, the demand for small electronic products with excellent functions and light and portable appearance is increasing. Therefore, small optical imaging lenses have the characteristics of lightness and portability, high optical performance and versatility, which has become a market development trend.

[0003] In order to obtain better imaging quality, improve resolution and correct chromatic aberration, most wide-angle lenses on the market currently use lens structures with multiple pieces of glass or glued lenses. Due to too many lenses and too large optical TTL, the overall cost and weight of the lens are too high, the volume is too large, and the installation and use are limited. In addition, the incident angle of conventional wide-angle lenses is too large, which will lead to poor imaging quality in the edge field of view. With the development of technology and the increase in diversified user needs, the pixel area of ​​photosensitive devices continues to shrink, and the system's requirements for imaging quality continue to increase. Therefore, it is necessary to design an optical imaging lens with a small overall size, easy installation and use, and good imaging quality. Utility Model Content

[0004] The utility model aims to provide an optical imaging lens to solve the technical problems of the existing optical imaging lens, such as large volume and weight, limited installation, and poor imaging quality at the edge of the wide-angle field of view.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] On the one hand, the present application provides an optical imaging lens, which includes six lenses. The lenses are, in order from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Among them, the first lens is a glass spherical lens with a negative refractive power, its object side is convex, and its image side is concave; the second lens is a plastic aspherical lens with a negative refractive power, its object side is concave, and its image side is concave; the third lens is a plastic aspherical lens with a positive refractive power, its object side is convex, and its image side is convex; the fourth lens is a glass spherical lens with a positive refractive power, its object side is convex, and its image side is convex; the fifth lens is a plastic aspherical lens with a negative refractive power, its object side near the optical axis is convex, and its image side is concave; the sixth lens is a plastic aspherical lens with a positive refractive power, its object side is convex, and its image side is convex. The optical imaging lens satisfies: TTL ≤ 22 mm, 2.5 mm < EFL < 2.6 mm, FOV > 160°, Fno = 2.0, where TTL is the overall length of the mechanism of the optical imaging lens, EFL is the combined focal length of the optical imaging lens, FOV is the field of view angle of the optical imaging lens, and Fno is the aperture value of the optical imaging lens.

[0007] In some embodiments of the present application, the focal length ranges of the six lenses satisfy: -5.5 < f1 < -6.5, -6 < f2 < -7, 10 < f3 < 11.5, 6 < f4 < 6.5, -5.5 < f5 < -6.5, 4 < f6 < 5, where f1, f2, f3, f4, f5, and f6 are the focal length values of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens, respectively.

[0008] In some embodiments of the present application, the absolute values of the ratios of the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens to the overall focal length of the optical imaging lens satisfy the following relationship values: 2 < (f1 / f) < 3, 2 < (f2 / f) < 3, 3.5 < (f3 / f) < 4.5, 2 < (f4 / f) < 3, 2 < (f5 / f) < 3, 1.5 < (f6 / f) < 2, where f is the overall focal length of the optical imaging lens.

[0009] In some embodiments of the present application, a diaphragm is provided between the third lens and the fourth lens.

[0010] In some embodiments of the present application, the first lens to the third lens are the front group of the optical imaging lens, and the fourth lens to the sixth lens are the rear group of the optical imaging lens.

[0011] In some embodiments of the present application, the optical imaging lens satisfies: 0.9 ≤ |f a / f b | ≤ 1.0, where f a is the combined focal length of the front group, and f b is the combined focal length of the rear group.

[0012] In some embodiments of the present application, the optical imaging lens satisfies: 0.3 < BFL / CTL < 0.4, where BFL is the distance from the sixth lens to the imaging surface on the optical axis, and CTL is the distance from the object side of the first lens to the image side of the sixth lens on the optical axis.

[0013] In some embodiments of the present application, the optical imaging lens satisfies: 6.5 < R1 / R2 < 7.5; SD2 / R2 < 1.9, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and SD2 is the aperture size of the image side of the first lens.

[0014] On the other hand, the present application also provides an imaging module, which includes an image sensor and the optical imaging lens as described above, and the image sensor is disposed on the image side of the optical imaging lens.

[0015] On the other hand, the present application also provides an electronic device, which includes the imaging module as described above and a device body for accommodating the imaging module.

[0016] It can be seen from the above technical solutions that the embodiments of the present utility model have at least the following advantages and positive effects:

[0017] The present application provides an optical imaging lens, an imaging module and an electronic device. The optical imaging lens includes six lenses sequentially arranged from the object side to the image side. The first lens and the fourth lens are glass spherical lenses, and the remaining lenses are all plastic aspherical lenses. The optical imaging lens satisfies: TTL ≤ 22 mm, 2.5 mm < EFL < 2.6 mm, FOV > 160°, Fno = 2.0, where TTL is the overall mechanical length of the optical imaging lens, EFL is the combined focal length of the optical imaging lens, FOV is the field of view angle of the optical imaging lens, and Fno is the aperture value of the optical imaging lens. By adopting a 2G4P glass-plastic hybrid structure, the optical TTL is less than 22 mm, which can effectively shorten the lens length and maintain the system performance, reduce the overall volume of the lens, and make it convenient for installation and use; FOV > 160°, and the MTF of the optical imaging lens is greater than 0.5 at 125 lp / mm, having good imaging quality. Description of the Drawings

[0018] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the optical imaging lens of the first embodiment provided by the utility model.

[0020] Figure 2 The MTF curve of the optical imaging lens of Example 1 under visible light 435nm-650nm.

[0021] Figure 3 This is a defocus curve diagram of the optical imaging lens of Example 1 under visible light 435nm-650nm.

[0022] Figure 4 The figure is a lateral chromatic aberration curve of the optical imaging lens of Example 1 under visible light 435nm-650nm.

[0023] Figure 5 The longitudinal chromatic aberration curve of the optical imaging lens of Example 1 under visible light 435nm-650nm.

[0024] Figure 6 Graphs showing field curvature and distortion of the optical imaging lens of Example 1 under visible light of 435nm-650nm.

[0025] Figure 7 It is a schematic diagram of the overall structure of the optical imaging lens of the second embodiment provided by the utility model.

[0026] Figure 8 This is an MTF curve diagram of the optical imaging lens of Example 2 under visible light 435nm-650nm.

[0027] Fig. 9 This is a defocus curve diagram of the optical imaging lens of Example 2 under visible light 435nm-650nm.

[0028] Fig.10 The figure is a lateral chromatic aberration curve of the optical imaging lens of Example 2 under visible light 435nm-650nm.

[0029] Fig.11 The longitudinal chromatic aberration curve of the optical imaging lens of Example 2 under visible light 435nm-650nm.

[0030] Fig.12 Graphs showing field curvature and distortion of the optical imaging lens of Example 2 under visible light of 435nm-650nm.

[0031] Fig.13 It is a schematic diagram of the overall structure of the optical imaging lens of the third embodiment provided by the utility model.

[0032] Fig.14 This is an MTF curve diagram of the optical imaging lens of Example 3 under visible light 435nm-650nm.

[0033] Fig.15 This is a defocus curve diagram of the optical imaging lens of Example 3 under visible light 435nm-650nm.

[0034] Fig.16 The figure is a lateral chromatic aberration curve of the optical imaging lens of Example 3 under visible light 435nm-650nm.

[0035] Fig.17 The longitudinal chromatic aberration curve of the optical imaging lens of Example 3 under visible light 435nm-650nm.

[0036] Fig.18 Graphs showing field curvature and distortion of the optical imaging lens of Example 3 under visible light of 435nm-650nm.

[0037] The following are the descriptions of the reference numerals:

[0038] E1, first lens; E2, second lens; E3, third lens; E4, fourth lens; E5, fifth lens; E6, sixth lens; STO, aperture. DETAILED DESCRIPTION

[0039] Although the present invention can be easily embodied as embodiments of different forms, only some of the specific embodiments are shown in the drawings and described in detail in this specification. It should be understood that this description should be regarded as an exemplary description of the principles of the present invention and is not intended to limit the present invention to that described herein.

[0040] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the utility model, rather than implying that each embodiment of the utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0041] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the utility model are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0042] The present application provides an optical imaging system, which includes six lenses, and the lenses are a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side. The first lens E1 to the third lens E3 are the front group of the optical imaging lens, and the fourth lens E4 to the sixth lens E6 are the rear group of the optical imaging lens.

[0043] Among them, the first lens E1 is a glass spherical lens with negative refractive power, its object side is convex, and the image side is concave; the second lens E2 is a plastic aspherical lens with negative refractive power, its object side is concave, and the image side is concave; the third lens E3 is a plastic aspherical lens with positive refractive power, its object side is convex, and the image side is convex; the fourth lens E4 is a glass spherical lens with positive refractive power, its object side is convex, and the image side is convex; the fifth lens E5 is a plastic aspherical lens with negative refractive power, its object side near the optical axis is convex, and the image side is concave; the sixth lens E6 is a plastic aspherical lens with positive refractive power, its object side is convex, and the image side is convex; the optical imaging lens meets: TTL≤22mm, 2.5mm <EFL<2.6mm,FOV> 160°, Fno=2.0, where TTL is the total length of the optical imaging lens, EFL is the combined focal length of the optical imaging lens, FOV is the field of view of the optical imaging lens, and Fno is the aperture value of the optical imaging lens. The optical TTL of the lens is less than 22mm, and its small size makes it extremely convenient to install and use; the field of view is large, DFOV>160°, which improves the overall field of view of the lens and improves its practicality.

[0044] Specifically, the focal length ranges of the six lenses satisfy: -5.5 < f1 < -6.5, -6 < f2 < -7, 10 < f3 < 11.5, 6 < f4 < 6.5, -5.5 < f5 < -6.5, 4 < f6 < 5, where f1, f2, f3, f4, f5, and f6 are the focal length values of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6, respectively. The absolute values of the ratios of the focal lengths of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6 to the overall focal length of the optical imaging lens satisfy the following relationship values: 2 < (f1 / f) < 3, 2 < (f2 / f) < 3, 3.5 < (f3 / f) < 4.5, 2 < (f4 / f) < 3, 2 < (f5 / f) < 3, 1.5 < (f6 / f) < 2, where f is the overall focal length of the optical imaging lens. The hybrid glass-plastic structure design with four plastic aspherical lenses plus two glass spherical lenses is beneficial for correcting secondary spectrum and higher-order aberrations; at the same time, the glass lenses are made of high-refractive-index materials, which can better optimize the optical structure and facilitate the lens structure design, reducing the lens cost; the plastic lenses can better correct chromatic aberration and higher-order aberrations, and can also well control the cost and reduce the lens weight.

[0045] Further, a diaphragm is provided between the third lens E3 and the fourth lens E4.

[0046] Further, the optical imaging lens satisfies: 0.9 ≤ |fa / fb| ≤ 1.0, where fa is the combined focal length of the front group and fb is the combined focal length of the rear group. Meeting the above formula is beneficial for improving the optical MTF performance of the lens and can effectively reduce the aberrations of the lens.

[0047] Further, the optical imaging lens satisfies: 0.3 < BFL / CTL < 0.4, where BFL is the distance from the sixth lens E6 to the imaging plane on the optical axis, and CTL is the distance from the object side of the first lens E1 to the image side of the sixth lens E6 on the optical axis. By controlling the lens to meet the above formula, it is beneficial to better control the optical back focal length of the lens on the basis of miniaturization, and is more conducive to the assembly of the lens to improve the assembly yield of the lens.

[0048] Further, the optical imaging lens satisfies: 6.5 < R1 / R2 < 7.5; SD2 / R2 < 1.9, where R1 is the curvature radius of the object side of the first lens E1, R2 is the curvature radius of the image side of the first lens E1, and SD2 is the aperture size of the image side of the first lens E1. When the lens satisfies 6.5 < R1 / R2 < 7.5, it can better collect light and the system has a larger field of view angle; when it satisfies SD2 / R2 < 1.9, the processing difficulty of the lens can be smaller and the processing yield of the lens can be improved.

[0049] The following is a detailed description of the optical imaging lens of the embodiment in combination with specific parameters.

[0050] First embodiment,

[0051] The optical imaging lens disclosed in this embodiment is as follows Figure 1 As shown, the optical lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The materials of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6 can be referred to the above description, and will not be repeated here.

[0052] The first lens E1 has negative refractive power, and its object side surface is convex, and its image side surface is concave; the second lens E2 has negative refractive power, and its object side surface is concave, and its image side surface is concave; the third lens E3 has positive refractive power, and its object side surface is convex, and its image side surface is convex; the fourth lens E4 has positive refractive power, and its object side surface is convex, and its image side surface is convex; the fifth lens E5 has negative refractive power, and its object side surface near the optical axis is convex, and its image side surface is concave; the sixth lens E6 has positive refractive power, and its object side surface is convex, and its image side surface is convex.

[0053] Specifically, the total length of the optical imaging lens TTL=22 mm, the combined focal length of the optical imaging lens EFL=2.525 mm, the field of view FOV=161°, the aperture value Fno=2.0, the image height IMH=5.87, |fa / fb|=0.9003, BFL / CTL=0.342, R1 / R2=7.328, SD2 / R2=1.882. Other parameters of the optical imaging lens are shown in Tables 1 and 2.

[0054] Table 1

[0055]

[0056]

[0057] The surface coefficients of the aspherical surfaces of the optical imaging lens in this embodiment are shown in Table 2. The k in Table 2 is a cone constant, and Table 2 shows the high-order coefficients A2, A4, A6, A8, A10, A12, A14 and A16 that can be used for each aspherical mirror surface in the first embodiment.

[0058] Table 2

[0059]

[0060] In this embodiment, the MTF curve diagram, the defocus curve diagram, the lateral chromatic aberration curve diagram, the longitudinal chromatic aberration curve diagram, and the field curvature and distortion diagram of the optical imaging lens under visible light 435nm-650nm are respectively as shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown.

[0061] Figure 2 This is the MTF curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the MTF is greater than 0.75 at the center and greater than 0.55 at the edge at 125lp / mm, the imaging quality is excellent, and the lens resolution is high.

[0062] Figure 3 This is a defocus curve diagram of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the defocus curves of the lens in each field of view under visible light are relatively concentrated and the defocus amount is small.

[0063] Figure 4 This is a lateral chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the lens chromatic aberration is within 10um, with high color reproduction, and the blue-purple fringing phenomenon is well corrected under night vision confocal conditions.

[0064] Figure 5 This is the longitudinal chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the chromatic aberration on the lens axis is small, the color restoration is good, the color difference is small, and the blue-purple fringing phenomenon is not obvious.

[0065] Figure 6 This is a diagram of the field curvature and distortion of the optical imaging lens under visible light 435nm-650nm; the figure shows that the field curvature and distortion of each wavelength of the lens are well controlled, which effectively improves the image quality and facilitates later image correction.

[0066] Second embodiment,

[0067] The optical imaging lens disclosed in this embodiment is as follows Figure 7 As shown, the total length of the optical imaging lens in this embodiment is TTL=21.93mm, the combined focal length of the optical imaging lens is EFL=2.576mm, the field of view angle FOV=161°, the aperture value Fno=2.0, the image height IMH=5.87, |fa / fb|=0.9654, BFL / CTL=0.326, R1 / R2=6.595, SD2 / R2=1.794. Specific optical parameters are shown in Tables 3 and 4.

[0068] Table 3

[0069]

[0070]

[0071] Table 4

[0072]

[0073] In this embodiment, the MTF curve diagram, the defocus curve diagram, the lateral chromatic aberration curve diagram, the longitudinal chromatic aberration curve diagram, and the field curvature and distortion diagram of the optical imaging lens under visible light 435nm-650nm are respectively as shown in Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 shown.

[0074] Figure 8 This is the MTF curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the MTF is greater than 0.75 at the center and greater than 0.55 at the edge at 125lp / mm, the imaging quality is excellent, and the lens resolution is high.

[0075] Fig. 9 This is a defocus curve diagram of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the defocus curves of the lens in each field of view under visible light are relatively concentrated and the defocus amount is small.

[0076] Fig.10 This is a lateral chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the lens chromatic aberration is within 10um, with high color reproduction, and the blue-purple fringing phenomenon is well corrected under night vision confocal conditions.

[0077] Fig.11 This is the longitudinal chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the chromatic aberration on the lens axis is small, the color restoration is good, the color difference is small, and the blue-purple fringing phenomenon is not obvious.

[0078] Fig.12 This is a diagram of the field curvature and distortion of the optical imaging lens under visible light 435nm-650nm; the figure shows that the field curvature and distortion of each wavelength of the lens are well controlled, which effectively improves the image quality and facilitates later image correction.

[0079] The third embodiment,

[0080] The optical imaging lens disclosed in this embodiment is as follows Fig.13As shown, the total length of the optical imaging lens in this embodiment is TTL=21.98 mm, the combined focal length of the optical imaging lens is EFL=2.536 mm, the field of view angle FOV=161°, the aperture value Fno=2.0, the image height IMH=5.87, |fa / fb|=0.9567, BFL / CTL=0.325, R1 / R2=6.566, and SD2 / R2=1.805. See Table 5 and Table 6 for specific optical parameters.

[0081] Table 5

[0082]

[0083]

[0084] Table 6

[0085]

[0086] In this embodiment, the MTF curve diagram, the defocus curve diagram, the lateral chromatic aberration curve diagram, the longitudinal chromatic aberration curve diagram, and the field curvature and distortion diagram of the optical imaging lens under visible light 435nm-650nm are respectively as shown in Fig.14 , Fig.15 , Fig.16 , Fig.17 and Fig.18 shown.

[0087] Fig.14 This is the MTF curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the MTF is greater than 0.75 at the center and greater than 0.55 at the edge at 125lp / mm, the imaging quality is excellent, and the lens resolution is high.

[0088] Fig.15 This is a defocus curve diagram of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the defocus curves of the lens in each field of view under visible light are relatively concentrated and the defocus amount is small.

[0089] Fig.16 This is a lateral chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the lens chromatic aberration is within 10um, with high color reproduction, and the blue-purple fringing phenomenon is well corrected under night vision confocal conditions.

[0090] Fig.17 This is the longitudinal chromatic aberration curve of the optical imaging lens under visible light 435nm-650nm; it can be seen from the figure that the chromatic aberration on the lens axis is small, the color restoration is good, the color difference is small, and the blue-purple fringing phenomenon is not obvious.

[0091] Fig.18This is a diagram of the field curvature and distortion of the optical imaging lens under visible light 435nm-650nm; the figure shows that the field curvature and distortion of each wavelength of the lens are well controlled, which effectively improves the image quality and facilitates later image correction.

[0092] The present application also discloses a camera module, which includes an image sensor and the optical imaging lens as described above, wherein the image sensor is arranged on the image side of the optical imaging lens. The optical imaging lens is used to receive the light signal of the object and project it to the image sensor, and the image sensor is used to convert the light signal corresponding to the object into an image signal.

[0093] The present application also discloses an electronic device, which includes the camera module as described above and a device body for accommodating the camera module. It is understood that the electronic device can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, a smart watch, a monitor, a driving recorder, a reversing image, etc. As long as it has the electronic device of the camera module, it also has all the technical effects of the optical lens. That is, while improving the imaging quality, it has the characteristics of a large field of view.

[0094] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. An optical imaging lens, characterized in that: It includes six lenses, which are, in order from the object side to the image side, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens; among them, the first lens is a glass spherical lens with a negative diopter, its object side is convex, and its image side is concave; the second lens is a plastic aspherical lens with a negative diopter, its object side is concave, and its image side is concave; the third lens is a plastic aspherical lens with a positive diopter, its object side is convex, and its image side is convex; the fourth lens is a glass spherical lens with a positive diopter, its object side is convex, and its image side is convex; the fifth lens is a plastic aspherical lens with a negative diopter, its object side near the optical axis is convex, and its image side is concave; the sixth lens is a plastic aspherical lens with a positive diopter, its object side is convex, and its image side is convex; the optical imaging lens satisfies: TTL≤22mm, 2.5mm<EFL<2.6mm, FOV>160°, Fno = 2.0, where TTL is the overall length of the mechanism of the optical imaging lens, EFL is the combined focal length of the optical imaging lens, FOV is the field of view angle of the optical imaging lens, and Fno is the aperture value of the optical imaging lens.

2. The optical imaging lens according to claim 1, wherein: The focal length ranges of the six lenses satisfy: -5.5<f1<-6.5, -6<f2<-7, 10<f3<11.5, 6<f4<6.5, -5.5<f5<-6.5, 4<f6<5, where f1, f2, f3, f4, f5, f6 are the focal length values of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens, respectively.

3. The optical imaging lens according to claim 2, wherein: The absolute values of the ratios of the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens to the overall focal length of the optical imaging lens satisfy the following relationship values: 2<(f1 / f)<3, 2<(f2 / f)<3, 3.5<(f3 / f)<4.5, 2<(f4 / f)<3, 2<(f5 / f)<3, 1.5<(f6 / f)<2, where f is the overall focal length of the optical imaging lens.

4. The optical imaging lens according to claim 1, wherein: An aperture is provided between the third lens and the fourth lens.

5. The optical imaging lens according to claim 4, characterized in that: The first lens to the third lens are the front group of the optical imaging lens, and the fourth lens to the sixth lens are the rear group of the optical imaging lens.

6. The optical imaging lens according to claim 5, characterized in that: The optical imaging lens satisfies: 0.9≤|f a / f b |≤1.0, where f a is the combined focal length of the front group, f b is the combined focal length of the rear group.

7. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies: 0.3<BFL / CTL<0.4, where BFL is the distance from the sixth lens to the imaging plane on the optical axis, and CTL is the distance from the object side of the first lens to the image side of the sixth lens on the optical axis.

8. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies: 6.5<R1 / R2<7.5; SD2 / R2<1.9, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and SD2 is the aperture size of the image side of the first lens.

9. A camera module, characterized in that: The optical imaging lens comprises an image sensor and the optical imaging lens according to any one of claims 1 to 7, wherein the image sensor is arranged on the image side of the optical imaging lens.

10. An electronic device, characterized in that: It comprises the camera module as described in claim 9 and a device body for accommodating the camera module.

Images