Optical imaging module, device and electronic equipment

Abstract

The present disclosure relates to an optical imaging module, device, and electronic device. The optical imaging module includes: a first lens group and a second lens group arranged in sequence along the optical axis and from the object side to the imaging surface; the first lens group has positive refractive power, including: a first lens with positive refractive power and a second lens with negative refractive power arranged in sequence from the object side to the imaging surface; wherein the object side surface and the image side surface of the first lens are both convex surfaces; the second lens group includes: a plurality of lenses with refractive power, the plurality of lenses with refractive power include: at least one movable lens; wherein the movable lens is used to: move along the optical axis to focus on objects at different distances. Not only can the optical imaging module be miniaturized, but the use of the first lens with positive refractive power and the second lens with negative refractive power in positive combination can suppress the spherical aberration and coma of the entire optical imaging module, thereby improving the performance and photographic effect of the optical imaging module in close-range photography.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to an optical imaging module, device, and electronic equipment. Background Art

[0002] In related technologies, an optical imaging module can be set in a camera module, and the camera module can be installed on an electronic device to provide the electronic device with corresponding shooting functions. In order to improve the clarity of the obtained image, the optical imaging module can be used to focus on the subject during the use of the electronic device.

[0003] Currently, focusing on objects at different distances is mainly achieved by moving all lens groups (the entire group) or moving the lens group close to the object side (the front group). However, focusing by moving the front group will increase the overall length of the optical imaging module during the focusing process, making it impossible to achieve miniaturization. Focusing by moving the entire group will result in poor performance for close-range photography. Summary of the Invention

[0004] In order to overcome the problems in the related art that the overall length of the optical imaging module increases during the focusing process, it is impossible to achieve miniaturization, and the close-range photography performance is poor, the present disclosure provides an optical imaging module, device and electronic equipment, which can focus on objects at different distances by moving the second lens group (rear group) away from the object side. This not only makes the optical imaging module miniaturized, but also improves the close-range photography performance of the optical imaging module.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided an optical imaging module, comprising:

[0006] A first lens group and a second lens group are arranged in sequence along the optical axis from the object side to the imaging plane;

[0007] The first lens group has positive refractive power and includes: a first lens having positive refractive power and a second lens having negative refractive power, arranged in sequence from the object side to the imaging plane; wherein both the object side surface and the image side surface of the first lens are convex surfaces;

[0008] The second lens group includes: a plurality of lenses with refractive power, and the plurality of lenses with refractive power include: at least one movable lens;

[0009] The movable lens is used to move along the optical axis to focus on objects at different distances.

[0010] Optionally, also include:

[0011] The aperture stop is located between the second lens and the second lens group, and is used to limit the aperture of the central principal light.

[0012] Optionally, the distance L between the aperture stop and the imaging surface is s The relationship between the distance TTL between the first lens and the imaging plane is as follows:

[0013] L s / TTL<0.9.

[0014] Optionally, also include:

[0015] The field stop is located on the object side of the first lens and is used to limit the incident amount of marginal light, thereby effectively controlling the aperture size of the object side lens.

[0016] Optionally, the Abbe number Vd1 of the first lens is greater than 30;

[0017] The Abbe number Vd2 of the second lens is less than 40.

[0018] Optionally, the relationship between the overall focal length f of the optical imaging module and the focal length f1 of the first lens is as follows:

[0019] 2 <f / f1<10。

[0020] Optionally, the relationship between half the diagonal length IH of the effective sensing area of ​​the imaging plane and the distance TTL between the first lens and the imaging plane is as follows:

[0021] 2.2 <TTL / IH<10。

[0022] Optionally, when there are multiple movable lenses, the relationship between the overall focal length f of the optical imaging module and the combined focal lengths of the multiple movable lenses is as follows:

[0023] 0.1<|f m / f|<3.

[0024] Optionally, the plurality of lenses having refractive power include: a third lens, a fourth lens, and a fifth lens arranged in sequence from the object side to the imaging plane;

[0025] The third lens, the fourth lens and / or the fifth lens are movable.

[0026] Optionally, the third lens has negative refractive power, and the image-side surface of the third lens is concave;

[0027] The fourth lens has positive refractive power, and the object-side surface of the fourth lens is concave, and the image-side surface is convex;

[0028] The fifth lens has negative refractive power, and the object-side surface of the fifth lens is concave.

[0029] Optionally, the third lens has positive refractive power;

[0030] The fourth lens has negative refractive power, and the image side surface of the fourth lens is concave;

[0031] The fifth lens has positive refractive power, and the object-side surface of the fifth lens is convex.

[0032] Optionally, the relationship between the focal length f1 of the first lens and the focal length f3 of the third lens is as follows:

[0033] 1<|f3 / f1|<5. Optionally, the relationship between the overall focal length f of the optical imaging module and the focal length f3 of the third lens is as follows:

[0034] 0.5<|f / f3|<3. Optionally, the relationship between the overall focal length f of the optical imaging module and the focal length f4 of the fourth lens is as follows:

[0035] 0<|f / f4|<6. Optionally, the relationship between the overall focal length f of the optical imaging module and the focal length f5 of the fifth lens is as follows:

[0036] 0<|f / f5|<5. Optionally, the relationship between the curvature radius R1 of the object-side surface and the curvature radius R2 of the image-side surface of the first lens is as follows:

[0037] -5 <R1 / R2<0。

[0038] Optionally, the relationship between the curvature radius R3 of the object-side surface and the curvature radius R4 of the image-side surface of the second lens is as follows:

[0039] -10<(R3+R4) / (R3-R4)<5.

[0040] Optionally, the relationship between the curvature radius R5 of the object-side surface and the curvature radius R6 of the image-side surface of the third lens is as follows:

[0041] 1 <f / |R5|+f / |R6|<15;

[0042] Among them, f is the overall focal length of the optical imaging module.

[0043] Optionally, the relationship between the curvature radius R7 of the object-side surface and the curvature radius R8 of the image-side surface of the fourth lens is as follows:

[0044] -2 <R7 / R8<10。

[0045] Optionally, the distance T between the vertex of the object side surface of the first lens and the vertex of the image side surface of the fifth lens isd The relationship between the distance TTL between the vertex of the object-side surface of the first lens and the imaging plane is as follows:

[0046] 0.4 <T d / TTL<1.

[0047] Optionally, the refractive index N5 of the fifth lens is less than 1.8.

[0048] Optionally, the overall focal length f of the optical imaging module and the incident beam diameter D of the optical imaging module are enp The relationship between them is as follows:

[0049] f / D enp >2.

[0050] According to a second aspect of an embodiment of the present disclosure, an optical imaging device is provided, comprising the optical imaging module described in any one of the first aspects above, wherein an image sensor assembly is provided on the image plane side of the optical imaging module.

[0051] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, comprising the optical imaging device described in the second aspect.

[0052] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0053] The technical solution in the disclosed embodiment achieves focusing on the subject by moving the second lens group (rear group) away from the object side, which can make the optical imaging module miniaturized. In the disclosed embodiment, by using a first lens with positive refractive power and a second lens with negative refractive power in combination, the spherical aberration and coma of the entire optical imaging module can be suppressed, thereby improving the close-range photography performance and photography effect of the optical imaging module.

[0054] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0056] Figure 1 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 1 .

[0057] Figure 2 This is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 1. Figure 2 .

[0058] Figure 3 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 1 Figure 1 .

[0059] Figure 4 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 1 Figure 2 .

[0060] Figure 5 This is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 2. Figure 3

[0061] Figure 6 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 2 Figure 3 .

[0062] Figure 7 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 2 Figure 4 .

[0063] Figure 8 This is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 3. Figure 4 .

[0064] Figure 9 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 3 Figure 5 .

[0065] Figure 10 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 3 Figure 6 .

[0066] Figure 11 The structure of the optical imaging module according to an exemplary embodiment 4 is shown Figure 5 .

[0067] Figure 12 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 4 Figure 7 .

[0068] Figure 13 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 4 Figure 8 .

[0069] Figure 14 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 5 Figure 6 .

[0070] Figure 15Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 5 Figure 9 .

[0071] Figure 16 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 5 Figure 10 .

[0072] Figure 17 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 6 Figure 7 .

[0073] Figure 18 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 6 Figure 10 one.

[0074] Figure 19 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 6 Figure 10 two.

[0075] Figure 20 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment 7 Figure 8 .

[0076] Figure 21 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 7 Figure 10 three.

[0077] Figure 22 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment 7 Figure 10 Four.

[0078] Figure 23 The figure is a block diagram showing a hardware structure of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0079] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0080] Figure 1 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 1 ,like Figure 1 As shown, the optical imaging module may include:

[0081] A first lens group 11 and a second lens group 12 are arranged in sequence along the optical axis from the object side to the imaging plane;

[0082] The first lens group 11 has positive refractive power and includes: a first lens 101 with positive refractive power and a second lens 102 with negative refractive power, arranged in sequence from the object side to the imaging plane; wherein the object side surface and the image side surface of the first lens 101 are both convex surfaces;

[0083] The second lens group 12 includes: a plurality of lenses with refractive power, and the plurality of lenses with refractive power include: at least one movable lens;

[0084] The movable lens is used to move along the optical axis to focus on objects at different distances.

[0085] Here, the lenses in the first lens group and the second lens group are spaced apart from each other. In some embodiments, the optical centers of the lenses in the first lens group and the second lens group are located on the same straight line, forming the optical axis of the optical imaging module. During implementation, the distance between any movable lens in the second lens group and the adjacent lens can be changed. In other words, in the embodiments of the present disclosure, the distance between any movable lens in the second lens group and the adjacent lens can be changed to achieve the function of focusing on subjects at different distances.

[0086] In some embodiments, at least one movable lens can be driven to move by a drive assembly. For example, the drive assembly may include a guide rail parallel to the optical axis, and the guide rail is slidably connected to the movable lens. The drive assembly may be composed of a drive motor, for example, a linear motor, a rotor motor or other drive motor. In the embodiment of the present disclosure, by arranging a drive assembly on the movable lens, the movable lens can be driven to move based on the drive assembly, thereby achieving optical zoom of the optical imaging module.

[0087] In other embodiments, the object-side surface of the second lens 102 is concave, and because the second lens 102 has negative refractive power, it can correct aberrations caused by the positive refractive power of the first lens 101. In other embodiments, the image-side surface of the second lens 102 can be concave or convex, and the specific configuration can be as needed and is not specifically limited here.

[0088] In other embodiments, the object side surface of the second lens 102 is concave, or Figure 1As shown, in the embodiment of the present disclosure, by setting the object-side surface and the image-side surface of the first lens 101 to be convex, and setting the object-side surface of the second lens 102 to be concave, the image-side surface of the first lens 101 can be aligned with the object-side surface of the second lens 102, which can shorten the total length of the optical imaging module and help reduce spherical aberration and coma.

[0089] The technical solution in the disclosed embodiments achieves focus on the subject by moving the second lens group (the rear lens group) away from the object side, maintaining the total optical length unchanged during the focusing process, making the module more miniaturized. Furthermore, in the disclosed embodiments, by employing a positive first lens element and a negative second lens element in combination, spherical aberration and coma are suppressed in the overall optical imaging module, thereby improving the performance and quality of close-range photography.

[0090] In some other embodiments, the optical imaging module further includes: an image sensor 13 located at the image plane.

[0091] In other embodiments, Figure 1 As shown, the optical imaging module further includes: a filter component 14, located between the image side of the lens group and the imaging surface. Here, the filter component refers to a component that filters light of different wavelengths, such as an infrared filter.

[0092] In other embodiments, Figure 1 As shown, the optical imaging module also includes a light deflection assembly 15. For example, this light processing assembly can be a component that deflects light, such as a reflective lens or a right-angle prism. By providing this light processing assembly, the direction of input light can be deflected so that it enters the first lens group and the second lens group, thereby meeting the size requirements of different electronic devices.

[0093] In some possible embodiments, the optical imaging module may further include:

[0094] The aperture stop is located between the second lens 102 and the second lens group 12 and is used to limit the aperture of the central principal light during the focusing process of the subject. This is beneficial for balancing the aperture ratio of the upper and lower light while maintaining a large aperture, thereby improving the relative illumination of the edge field of view.

[0095] In other embodiments, the maximum angle of the central ray incident on the imaging plane (Chief Ray Angle, CRA) is less than a set angle threshold, for example, less than 25 degrees. In the disclosed embodiments, adjusting the aperture stop position is more conducive to adapting the CRA of the image sensor, thereby achieving optimal photoelectric conversion efficiency.

[0096] In some possible embodiments, the distance L between the aperture stop and the imaging plane is s The relationship between the distance TTL between the first lens 101 and the imaging plane may be as follows:

[0097] L s / TTL<0.9.

[0098] In the embodiment of the present disclosure, by limiting the distance L between the aperture stop and the imaging surface s The relationship between the distance TTL between the first lens and the imaging plane is conducive to balancing the ratio of upper and lower light, and can ensure that the edge field of view has a high relative illumination while reducing the aperture of the first lens group (front group).

[0099] In some possible embodiments, the optical imaging module may further include:

[0100] The field stop is located on the object side of the first lens 101 and is used to limit the incident amount of marginal light during the process of focusing the object.

[0101] In the disclosed embodiment, a field stop can be provided at the effective aperture on the object side of the first lens. In the disclosed embodiment, by providing the field stop on the object side of the first lens, the field stop is positioned closest to the object side. Thus, light must first pass through the field stop before entering the first and second lens groups.

[0102] Because the field stop is closest to the object side, located at the front end of the optical imaging module, increasing its size does not require a corresponding increase in the size of other components. This allows it to be increased as needed to improve light intake and the diffraction limit, without being restricted by the size of other components. This, in turn, reduces the aperture of the first lens element while minimizing the adverse effects of peripheral field light on imaging.

[0103] In some embodiments, the optical imaging module may further include: a light-transmitting cover plate located on the side of the field stop facing away from the first lens 101 (ie, the object side).

[0104] In some possible embodiments, the Abbe number Vd1 of the first lens 101 is greater than 30, and the Abbe number Vd2 of the second lens 102 is less than 40. When the first lens is a positive refractive power lens and the second lens is a negative refractive power lens, chromatic aberration can be effectively corrected.

[0105] In some possible embodiments, the relationship between the overall focal length f of the optical imaging module and the focal length f1 of the first lens 101 may be as follows:

[0106] 2 <f / f1<10。

[0107] In some possible embodiments, if the f / f1 ratio is too large, for example, exceeding an upper limit (e.g., 10), the optical power of the first lens may become too strong, thereby causing excessive spherical aberration and off-axis coma, making aberration correction difficult.

[0108] If the f / f1 ratio is too small, for example, exceeding a lower limit (e.g., 2), the refractive power of the first lens group is weak, resulting in an increase in the overall optical length and difficulty in miniaturization. In the disclosed embodiments, the refractive power of each lens in the optical imaging module is set within a reasonable range to control the focal length of the first lens, thereby achieving a balance between reducing the overall optical length and suppressing spherical aberration.

[0109] In some possible embodiments, the relationship between half the diagonal length IH of the effective sensing area of ​​the imaging plane and the distance TTL between the first lens and the imaging plane may be as follows:

[0110] 2.2 <TTL / IH<10。

[0111] In the embodiment of the present disclosure, an image sensor is provided on the imaging surface. By limiting the size of the effective image surface of the sensor element to a reasonable range, the constructed optical imaging module can be made more suitable for a telephoto optical imaging system.

[0112] In some possible embodiments, when there are multiple movable lenses, the relationship between the overall focal length f of the optical imaging module and the combined focal lengths of the multiple movable lenses may be as follows:

[0113] 0.1<|f m / f|<3.

[0114] Here, when focusing on an object at different distances from infinity to close distance, the first lens group is fixed, and the focus of the object is achieved by moving the second lens group 11 or some lenses in the second lens group 12. The focal length of the optical imaging module when focusing at infinity is f, and the combined focal length of the multiple movable lenses (the focal length of the focusing group) is f m .

[0115] In the embodiment of the present disclosure, by moving the second lens group or part of the lenses in the second lens group, the increase in aberrations during the focusing process can be suppressed, the imaging quality at close range can be improved, and good imaging quality can be maintained from infinity to close range. When the ratio of the above formula exceeds the upper limit, the moving stroke of the focus group is too large, the overall space required increases, and the module size is difficult to miniaturize. When it is lower than the lower limit, the optical focal length of the focus group is large, the focusing sensitivity is too high, and the aberrations increase sharply during the focusing process, which is not conducive to improving the close-range imaging performance. In the embodiment of the present disclosure, the focal length of the focus group is controlled within a specified range, which can balance the stroke and focusing sensitivity of the focus group.

[0116] In some possible embodiments, the plurality of lenses having refractive power may include: a third lens, a fourth lens, and a fifth lens arranged in sequence from the object side to the imaging plane;

[0117] The third lens, the fourth lens and / or the fifth lens are movable.

[0118] The technical solution in the embodiments of the present disclosure achieves focusing on the subject by moving the third lens, the fourth lens and / or the fifth lens away from the object side, which can miniaturize the optical imaging module. In the embodiments of the present disclosure, by using a first lens with positive refractive power and a second lens with negative refractive power in combination, the spherical aberration and coma of the entire optical imaging module can be suppressed, thereby improving the close-range photography performance and photography effect of the optical imaging module.

[0119] In some possible embodiments, the third lens has negative refractive power, and the image-side surface of the third lens is concave;

[0120] The fourth lens has positive refractive power, and the object-side surface of the fourth lens is concave, and the image-side surface is convex;

[0121] The fifth lens has negative refractive power, and the object-side surface of the fifth lens is concave.

[0122] For example, the optical imaging module may include:

[0123] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0124] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0125] a third lens element having negative refractive power, wherein both the object-side surface and the image-side surface of the third lens element are concave;

[0126] a fourth lens element having positive refractive power, wherein the object-side surface of the fourth lens element is concave and the image-side surface is convex;

[0127] A fifth lens element having negative refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element are concave.

[0128] Of course, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may also have other structures and shapes. The specific structures and shapes of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens in the embodiments are also described in the following examples.

[0129] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0130] In some possible embodiments, the third lens has positive refractive power;

[0131] The fourth lens has negative refractive power, and the image side surface of the fourth lens is concave;

[0132] The fifth lens has positive refractive power, and the object-side surface of the fifth lens is convex.

[0133] For example, the optical imaging module may include:

[0134] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0135] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0136] a third lens element having positive refractive power, wherein the object-side surface of the third lens element is convex and the image-side surface is concave;

[0137] a fourth lens element having negative refractive power, wherein the object-side surface of the fourth lens element is convex and the image-side surface is concave;

[0138] A fifth lens element having positive refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element are convex surfaces.

[0139] Of course, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may also have other structures and shapes. The specific structures and shapes of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens in the embodiments are also described in the following examples.

[0140] In some possible embodiments, the relationship between the focal length f1 of the first lens 101 and the focal length f3 of the third lens may be as follows:

[0141] 1<|f3 / f1|<5.

[0142] In some embodiments, when the |f3 / f1| ratio exceeds an upper limit, the refractive power of the first lens is relatively strong, while the refractive power of the third lens is relatively weak, resulting in increased spherical aberration and off-axis aberration, making it difficult to achieve good aberration compensation. When the |f3 / f1|| ratio is below a lower limit, the focal length of the first lens is large and the refractive power is relatively weak, failing to achieve good chromatic aberration compensation and, consequently, poor imaging quality. In the disclosed embodiments, by controlling the focal length of the third lens within a reasonable range in the refractive power settings of the various lenses in the optical imaging module, a balance can be achieved between reducing the total optical length and suppressing spherical aberration, achieving both good aberration compensation and good chromatic aberration compensation.

[0143] In some possible embodiments, the relationship between the overall focal length f of the optical imaging module and the focal length f3 of the third lens may be as follows:

[0144] 0.5<|f / f3|<3.

[0145] In the disclosed embodiment, the focal length of the third lens is close to the aperture stop (diaphragm). When the third lens has negative refractive power, and both the second and third lenses have negative refractive power, the optical power of the second lens is weakened, reducing overall decentering sensitivity. When the ratio |f / f3| exceeds the upper limit, the refractive power of the third lens is strong, overcompensating for spherical aberration. When the ratio |f / f3| is below the lower limit, the refractive power of the third lens is weak, and the ability to compensate for spherical aberration and off-axis aberration is weakened. At the same time, the matching relationship with the second lens deteriorates, making it difficult to achieve a good achromatic effect.

[0146] In the embodiment of the present disclosure, not only is the focal length of the third lens controlled within a reasonable range, a balance can be achieved between reducing the total optical length and suppressing spherical aberration, thereby achieving good aberration compensation and good chromatic aberration cancellation effects. In addition, the optical imaging module can extend the close-range imaging range and improve the close-range imaging quality by moving the second lens group or part of the lenses in the second lens group (for example, moving the third lens), and achieve excellent imaging quality from infinity to close distances.

[0147] In some possible embodiments, the relationship between the overall focal length f of the optical imaging module and the focal length f4 of the fourth lens may be as follows:

[0148] 0<|f / f4|<6.

[0149] In the disclosed embodiment, the focal length range of the fourth lens is defined. Controlling the focal length of the fourth lens within a reasonable range is beneficial for reducing sensitivity and optimizing aberration compensation. Preferably, the relationship between the overall focal length f of the optical imaging module and the focal length f4 of the fourth lens can also be as follows:

[0150] 0<|f / f4|<5.

[0151] In some possible embodiments, the relationship between the overall focal length f of the optical imaging module and the focal length f5 of the fifth lens may be as follows:

[0152] 0<|f / f5|<5.

[0153] In some embodiments, when the ratio of |f / f5| exceeds an upper limit, or when the ratio of |f / f5| is lower than a lower limit, it is not conducive to aberration compensation of the edge field, especially field curvature and coma.

[0154] In the disclosed embodiment, the focal length range of the fifth lens is defined. Controlling the focal length of the fifth lens within a reasonable range is beneficial for optimizing aberration compensation in the peripheral field of view and achieving good chromatic aberration cancellation. Preferably, the relationship between the overall focal length f of the optical imaging module and the focal length f5 of the fifth lens can also be as follows:

[0155] 0<|f / f5|<4.

[0156] In some possible embodiments, the refractive index N5 of the fifth lens is less than 1.8.

[0157] In some possible embodiments, the relationship between the curvature radius R1 of the object-side surface and the curvature radius R2 of the image-side surface of the first lens 101 is as follows:

[0158] -5 <R1 / R2<0。

[0159] In the disclosed embodiment, the shape of the first lens element 101 is defined. If the shape exceeds this range, it is not conducive to the balance between spherical aberration compensation and astigmatism. In the disclosed embodiment, by limiting the ratio of R1 / R2 to the above range, it is possible to achieve good aberration compensation and good chromatic aberration cancellation effects, making the relationship between spherical aberration compensation and astigmatism more balanced. Preferably, the above range can be defined as:

[0160] -4 <R1 / R2<0。

[0161] In some possible embodiments, the relationship between the curvature radius R3 of the object-side surface and the curvature radius R4 of the image-side surface of the second lens 102 may be as follows:

[0162] -10<(R3+R4) / (R3-R4)<5.

[0163] In the disclosed embodiment, the shape of the second lens element 102 is defined. Exceeding this range detracts from the balance between spherical aberration compensation and astigmatism. By limiting the shape of the second lens element to this range, the disclosed embodiment achieves both excellent aberration compensation and chromatic aberration cancellation, further balancing spherical aberration compensation and astigmatism.

[0164] Preferably, the relationship between the curvature radius R3 of the object-side surface and the curvature radius R4 of the image-side surface of the second lens can also be as follows:

[0165] -8<(R3+R4) / (R3-R4)<3.

[0166] In some possible embodiments, the relationship between the curvature radius R5 of the object-side surface and the curvature radius R6 of the image-side surface of the third lens is as follows:

[0167] 1 <f / |R5|+f / |R6|<15;

[0168] Among them, f is the overall focal length of the optical imaging module.

[0169] In the disclosed embodiment, the shape of the third lens is defined, and the image-side surface of the third lens is concave, which is conducive to correcting field curvature and coma. If it exceeds this range, it will be detrimental to the balanced compensation of various aberrations.

[0170] In some possible embodiments, the relationship between the curvature radius R7 of the object-side surface and the curvature radius R8 of the image-side surface of the fourth lens may be as follows:

[0171] -2 <R7 / R8<10。

[0172] In the embodiment of the present disclosure, the shape of the fourth lens is defined to be beneficial to the aberration compensation of the peripheral field of view. If it exceeds this range, it will be detrimental to the aberration compensation of the peripheral field of view.

[0173] In some other possible embodiments, the relationship between the curvature radius R7 of the object-side surface and the curvature radius R8 of the image-side surface of the fourth lens may also be as follows: <R7 / R8<9。

[0174] In some possible embodiments, the distance T between the vertex of the object-side surface of the first lens 101 and the vertex of the image-side surface of the fifth lens is d The relationship between the distance TTL between the vertex of the object-side surface of the first lens 101 and the imaging plane is as follows:

[0175] 0.4 <T d / TTL<1.

[0176] In this disclosed embodiment, the relationship between the distance between the first lens and the imaging plane (total length of the lens group) and the total length of the imaging system is defined. By utilizing the second lens group (rear lens group) for focusing, the total length of the optical imaging module is fully utilized, achieving a balanced effect of reducing focus sensitivity and shortening the total length. The distance between the first lens and the imaging plane is the distance from the vertex of the first lens closest to the object side to the imaging plane.

[0177] In other embodiments, the full field of view (FOV) of the optical imaging module can satisfy the following relationship: FOV < 60 degrees. In the disclosed embodiments, by limiting the field of view to less than 60 degrees, the optical imaging module can be made more suitable for medium- and long-focus light imaging lenses.

[0178] In some other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be aspherical lenses. In some other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of optical plastic.

[0179] In some possible embodiments, the overall focal length f of the optical imaging module and the incident beam diameter D of the optical imaging module are enp The relationship between can be as follows:

[0180] f / D enp >2.

[0181] In the embodiment of the present disclosure, f / D enp In the disclosed embodiment, by limiting the aperture value to a reasonable range, such as making the aperture value greater than 2, the amount of light entering the optical imaging module can be guaranteed while meeting the module size limit.

[0182] In some possible embodiments, an electronic device is also provided, which includes the optical imaging module provided by any of the above embodiments, an image sensor is arranged on the image plane, a focusing lens group is matched with components such as a motor, and one of the lens groups is used as an anti-shake component, etc.

[0183] The present disclosure further provides the following embodiments for the optical imaging module:

[0184] Example 1

[0185] Figure 2 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 2 , Figure 3 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 1 , Figure 4 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 2 ,like Figure 3 As shown, Figure 3 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 4 As shown, Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 2As shown, the optical imaging module may include:

[0186] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0187] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0188] a third lens element 103 having negative refractive power, wherein both the object-side surface and the image-side surface of the third lens element 103 are concave;

[0189] a fourth lens element 104 having positive refractive power, wherein the object-side surface of the fourth lens element 104 is concave and the image-side surface is convex;

[0190] The fifth lens element 105 has negative refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element 105 are concave.

[0191] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0192] Table 1 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 2 The optical imaging system shown in .

[0193] Table 1 Optical structure data

[0194] f： 11.60mm fno: 3.40 Half Field of View (HFOV): 10.0deg TYPE S R thi Nd Vd EFL flat OBJ inf D0 ASP 1 4.66340 2.08 1.535 55.7 3.90 ASP 2 -3.18280 0.10 ASP 3 -2.17660 0.78 1.614 25.6 -9.80 ASP 4 -3.87300 0.00 flat STO inf d1 ASP 6 -5.14390 0.40 1.608 26.9 -6.61 ASP 7 18.89720 0.10 ASP 8 -8.12350 0.35 1.671 19.2 8.13 ASP 9 -3.31980 1.50 ASP 10 -3.31980 1.00 1.584 28.2 -10.21 ASP 11 6.51490 d2 flat 12 inf 0.21 1.517 64.20 - flat 13 inf 0.80 flat 14 image -

[0195] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness of each lens and the air space between each lens; Nd represents the refractive index; Vd represents the dispersion coefficient (Abbe number); EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object side surface of the first lens; ASP represents the aspherical surface; image represents the imaging surface; d1 represents the air space between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air space between the focusing group and the lens closest to the fixed lens on the image side.

[0196] Table 2 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 2 The optical imaging system shown in .

[0197] Table 2 Aspheric coefficients

[0198] surface K A B C D E 1 -2.00783E+00 -9.97843E-04 2.15083E-04 -7.63358E-04 2.44866E-04 -4.41921E-05 2 0.00000E+00 1.02439E-03 1.71136E-03 -8.13114E-04 1.15285E-04 -3.01016E-06 3 0.00000E+00 3.57603E-02 1.81934E-03 -1.31069E-03 3.37717E-04 4.28664E-06 4 0.00000E+00 2.24832E-02 8.20199E-04 -1.37013E-03 3.71402E-04 -2.34780E-05 6 0.00000E+00 -2.53428E-02 2.78642E-03 6.39864E-04 -7.75290E-05 -3.87845E-05 7 0.00000E+00 -1.63155E-02 -3.37348E-03 -3.96182E-03 1.87261E-03 -1.63255E-04 8 0.00000E+00 3.42490E-02 -5.35789E-03 1.59024E-03 -2.99467E-04 2.32764E-05 9 0.00000E+00 2.01661E-02 6.24883E-04 5.96321E-03 -1.80794E-03 1.30108E-05 10 0.00000E+00 -4.00136E-02 -4.05202E-03 3.68313E-03 -2.13238E-03 2.93905E-04 11 0.00000E+00 -3.66706E-02 2.59699E-03 8.46638E-04 -5.17546E-04 7.33360E-05

[0199] Among them, surface represents the surface number.

[0200] Table 3 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 2 The optical imaging system shown in .

[0201] Table 3 Focus lens position relationship

[0202] Pos1 Pos2 D0 inf 100 d1 0.50 4.15 d2 1.14 3.51

[0203] Where D0 represents the distance between the subject and the vertex of the first lens element closest to the object side. Pos1 represents the position of the focus group when focusing on a subject at infinity. Pos2 represents the front-to-back spacing of the focus group when focusing on a subject at a distance of 100mm. Inf represents infinity.

[0204] Example 2

[0205] Figure 5 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 3 , Figure 6 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 3 , Figure 7 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 4 ,like Figure 6 As shown, Figure 6 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 7 As shown, Figure 7 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 5 As shown, the optical imaging module may include:

[0206] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0207] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0208] a third lens element 103 having negative refractive power, wherein the object-side surface of the third lens element 103 is convex and the image-side surface is concave;

[0209] a fourth lens element 104 having positive refractive power, wherein the object-side surface of the fourth lens element 104 is concave and the image-side surface is convex;

[0210] The fifth lens element 105 has negative refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element 105 are concave.

[0211] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0212] Table 4 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 5 The optical imaging system shown in .

[0213] Table 4 Optical structure data

[0214] f： 11.54mm fno: 3.38 Half FOV: 9.9deg TYPE S R thi Nd Vd EFL flat OBJ inf D0 ASP 1 5.94170 2.55 1.535 55.7 4.41 ASP 2 -3.32380 0.11 ASP 3 -3.19230 0.50 1.614 25.6 -20.61 ASP 4 -4.52300 0.10 flat STO inf d1 ASP 6 4.33790 0.54 1.614 25.6 -5.38 ASP 7 1.78590 d2 ASP 8 -2.95600 0.31 1.671 19.2 14.88 ASP 9 -2.37600 0.52 ASP 10 -16.73200 0.32 1.544 56.0 -25.29 ASP 11 77.92170 2.67 flat 12 inf 0.31 1.517 64.20 - flat 13 inf 0.69 flat 14 image -

[0215] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens; ASP represents the aspherical surface; image represents the imaging surface; d1 represents the air gap between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air gap between the focusing group and the lens closest to the fixed lens on the image side.

[0216] Table 5 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 5 The optical imaging system shown in .

[0217] Table 5 Aspheric coefficients

[0218] surface K A B C D E 1 -3.18798E+00 -1.92170E-03 -1.08466E-04 -1.98704E-04 1.91635E-05 -4.41281E-06 2 0.00000E+00 7.85347E-04 -6.75471E-04 1.14231E-04 2.79688E-05 1.12853E-06 3 0.00000E+00 3.47284E-04 1.03306E-03 4.99653E-05 1.15201E-04 -4.00506E-06 4 0.00000E+00 -1.11718E-03 1.59242E-03 -2.80014E-04 1.81075E-04 -2.34780E-05 6 0.00000E+00 -1.66506E-02 1.69981E-03 4.91401E-04 -9.81807E-05 -3.87845E-05 7 0.00000E+00 -2.73633E-02 -2.93323E-03 1.76193E-03 -8.19330E-04 -1.63255E-04 8 0.00000E+00 8.83947E-03 -5.19732E-03 1.35521E-03 -4.27135E-04 2.32764E-05 9 0.00000E+00 8.59086E-03 -3.48531E-03 9.39125E-04 -3.21330E-04 1.30108E-05 10 0.00000E+00 -4.47763E-02 3.44825E-03 3.44902E-03 -2.09311E-03 2.93905E-04 11 0.00000E+00 -4.63242E-02 7.98525E-03 -3.56417E-04 -5.28227E-04 8.16860E-05

[0219] Among them, surface represents the surface number.

[0220] Table 6 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 6 The optical imaging system shown in .

[0221] Table 6 Focus lens position relationship

[0222] Pos1 Pos2 D0 inf 100 d1 0.81 2.27 d2 1.22 1.86

[0223] Where D0 represents the distance between the subject and the vertex of the first lens element closest to the object side. Pos1 represents the position of the focus group when focusing on a subject at infinity. Pos2 represents the front-to-back spacing of the focus group when focusing on a subject at a distance of 100mm. Inf represents infinity.

[0224] Example 3

[0225] Figure 8 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 4 , Figure 9 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 5 , Figure 10 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 6 ,like Figure 9 As shown, Figure 9 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 10 As shown, Figure 10 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 8 As shown, the optical imaging module may include:

[0226] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0227] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0228] a third lens element 103 having negative refractive power, wherein the object-side surface of the third lens element 103 is convex and the image-side surface is concave;

[0229] a fourth lens element 104 having positive refractive power, wherein the object-side surface of the fourth lens element 104 is concave and the image-side surface is convex;

[0230] The fifth lens element 105 has negative refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element 105 are concave.

[0231] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0232] Table 7 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 8 The optical imaging system shown in .

[0233] Table 7 Optical structure data

[0234] f： 10.53mm fno: 3.40 Half FOV: 10.8 degrees TYPE S R thi Nd Vd EFL flat OBJ inf D0 ASP 1 3.61020 1.43 1.534 55.7 3.71 ASP 2 -3.77810 0.10 ASP 3 -3.94740 0.50 1.612 25.6 -8.56 ASP 4 -16.82930 0.10 flat STO inf d1 ASP 6 4.59900 0.67 1.534 55.7 -7.77 ASP 7 2.07040 d2 ASP 8 -3.14290 0.78 1.564 37.4 26.11 ASP 9 -2.82340 1.22 ASP 10 7.18500 0.56 1.508 56.5 -40.21 ASP 11 5.17560 1.91 flat 12 inf 0.31 1.517 64.20 - flat 13 inf 0.69 flat 14 image -

[0235] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens; ASP represents the aspherical surface; image represents the imaging surface; d1 represents the air gap between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air gap between the focusing group and the lens closest to the fixed lens on the image side.

[0236] Table 8 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 8 The optical imaging system shown in .

[0237] Table 8 Aspheric coefficients

[0238] surface K A B C D E 1 -5.39564E-01 6.85313E-04 -1.17759E-04 -4.40414E-04 1.11670E-04 -5.15005E-05 2 0.00000E+00 5.11247E-03 2.16853E-04 -1.82106E-04 -8.33817E-05 4.31669E-06 3 0.00000E+00 4.62351E-03 3.37811E-03 1.03886E-04 1.14646E-05 -3.09831E-06 4 0.00000E+00 3.28252E-03 2.64330E-03 9.23281E-04 -4.13695E-05 -2.21156E-05 6 0.00000E+00 -1.46413E-02 1.78317E-03 6.73845E-04 -3.35859E-04 -3.87845E-05 7 0.00000E+00 -2.35946E-02 1.41451E-03 1.00002E-03 -8.63114E-04 -1.63255E-04 8 0.00000E+00 2.53790E-02 -8.64970E-06 5.44548E-03 -1.24831E-03 2.32764E-05 9 0.00000E+00 1.33623E-02 1.65685E-03 2.09456E-03 2.36369E-05 1.30108E-05 10 0.00000E+00 -6.88126E-02 -2.50444E-03 4.22220E-03 -1.73874E-03 2.93905E-04 11 0.00000E+00 -7.47929E-02 5.97951E-03 7.58186E-04 -5.24449E-04 7.30844E-05

[0239] Among them, surface represents the surface number.

[0240] Table 9 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 8 The optical imaging system shown in .

[0241] Table 9 Focus lens position relationship

[0242] Pos1 Pos2 D0 inf 100 d1 0.13 2.21 d2 0.64 1.69

[0243] Where D0 represents the distance between the subject and the vertex of the first lens element closest to the object side. Pos1 represents the position of the focus group when focusing on a subject at infinity. Pos2 represents the front-to-back spacing of the focus group when focusing on a subject at a distance of 100mm. Inf represents infinity.

[0244] In this disclosed embodiment, the combination of a negative third lens element, a positive fourth lens element, and a negative fifth lens element effectively corrects aberrations, particularly field curvature and coma. Furthermore, the coordinated surface shapes of the various lenses also facilitate correction of field curvature, astigmatism, and distortion. Furthermore, the positive fourth lens element further shortens the overall system length and reduces the sensitivity of each lens element to decentering.

[0245] The optical power distribution method of the first lens and the third lens is specified. By using the positive refractive power of the first lens, the negative refractive power of the second lens, and the negative refractive power of the third lens, the total optical length can be shortened while sharing the optical refractive power of the first lens, reducing the optical power of the first lens and achieving a good achromatic effect.

[0246] Example 4

[0247] Figure 11 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 5 , Figure 12 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 7 , Figure 13 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 8 ,like Figure 12 As shown, Figure 12 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 13 As shown, Figure 13 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 11 As shown, the optical imaging module may include:

[0248] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0249] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0250] a third lens element 103 having positive refractive power, wherein the object-side surface of the third lens element 103 is convex and the image-side surface is concave;

[0251] a fourth lens element 104 having negative refractive power, wherein the object-side surface of the fourth lens element 104 is convex and the image-side surface is concave;

[0252] The fifth lens element 105 has positive refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element 105 are convex surfaces.

[0253] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0254] Table 10 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 11 The optical imaging system shown in .

[0255] Table 10 Optical structure data

[0256] f： 11.50mm fno: 3.40 Half FOV: 10.0deg TYPE S R thi Nd Vd EFL flat OBJ inf D0 ASP 1 4.68730 1.10 1.535 55.7 3.42 ASP 2 -2.75230 0.10 ASP 3 -2.84420 0.50 1.614 25.6 -5.14 ASP 4 -30.51800 0.30 flat STO inf 0.00 ASP 6 2.69000 0.50 1.671 19.2 5.31 ASP 7 10.14660 0.30 ASP 8 9.00150 0.30 1.614 25.6 -2.71 ASP 9 1.38810 d1 ASP 10 7.50780 1.24 1.544 56.0 9.50 ASP 11 -15.61660 d2 flat 12 inf 0.21 1.517 64.20 - flat 13 inf 0.80 flat 14 image -

[0257] Where f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the surface type; S represents the surface number; R represents the radius of curvature; thi represents the thickness; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens element; ASP represents an aspherical surface; image represents the imaging surface; d1 represents the air gap between the focus group and the element closest to the fixed lens on the object side; and d2 represents the air gap between the focus group and the element closest to the fixed lens on the image side.

[0258] Table 11 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 11 The optical imaging system shown in .

[0259] Table 11 Aspheric coefficients

[0260] surface K A B C D E 1 -4.45955E-01 1.95945E-03 2.63097E-04 -4.10008E-04 3.30672E-04 -9.12409E-05 2 0.00000E+00 1.41844E-02 2.59213E-03 1.51534E-04 -3.75234E-04 5.27990E-05 3 0.00000E+00 -5.42296E-04 5.93367E-03 -4.64954E-04 -9.97422E-05 4.66785E-05 4 0.00000E+00 -2.32410E-02 5.89833E-03 -1.59020E-03 9.89337E-04 -1.30490E-04 6 0.00000E+00 -3.04444E-02 3.60766E-03 -4.87986E-04 -2.85905E-03 1.42899E-03 7 0.00000E+00 -1.77521E-02 4.89684E-03 -7.38581E-03 1.33839E-03 7.98758E-04 8 0.00000E+00 -1.30771E-02 -1.56095E-02 7.32824E-04 6.93463E-03 -2.38107E-03 9 0.00000E+00 -5.17978E-02 -3.41448E-02 -3.43432E-03 1.65332E-02 -1.00225E-02 10 0.00000E+00 6.35267E-05 -5.84465E-04 2.47168E-04 -4.96941E-05 3.18857E-06 11 0.00000E+00 2.72018E-05 -9.87094E-04 3.59362E-04 -6.32988E-05 3.75326E-06

[0261] Among them, surface represents the surface number.

[0262] Table 12 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 11 The optical imaging system shown in .

[0263] Table 12 Focus lens position relationship

[0264] Pos1 Pos2 D0 inf 100 d1 5.22 1.43 d2 3.34 3.31

[0265] Where D0 represents the distance between the subject and the vertex of the first lens element closest to the object side. Pos1 represents the position of the focus group when focusing on a subject at infinity. Pos2 represents the front-to-back spacing of the focus group when focusing on a subject at a distance of 100mm. Inf represents infinity.

[0266] Example 5

[0267] Figure 14 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 6 , Figure 15 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 9 , Figure 16 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 10 ,like Figure 15 As shown, Figure 15 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 16 As shown, Figure 16From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 14 As shown, the optical imaging module may include:

[0268] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0269] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is concave and the image-side surface is convex;

[0270] a third lens element 103 having positive refractive power, wherein the object-side surface of the third lens element 103 is convex and the image-side surface is concave;

[0271] a fourth lens element 104 having negative refractive power, wherein the object-side surface of the fourth lens element 104 is convex and the image-side surface is concave;

[0272] The fifth lens element 105 has positive refractive power, wherein both the object-side surface and the image-side surface of the fifth lens element 105 are convex.

[0273] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0274] Table 13 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 14 The optical imaging system shown in . Due to the effect of the turning prism, the signs of the reflections from the reflection surface to the image surface are reversed.

[0275] Table 13 Optical structure data

[0276]

[0277]

[0278] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness of each lens and the air gap between the front and rear lenses; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens; ASP represents an aspherical surface; image represents the imaging surface; d1 represents the air gap between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air gap between the focusing group and the lens closest to the fixed lens on the image side.

[0279] Table 14 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 14 The optical imaging system shown in .

[0280] Table 14 Aspheric coefficients

[0281] surface K A B C D E 1 -6.42880E-01 -1.70492E-03 -2.49138E-04 4.13660E-04 -3.30154E-04 8.86193E-05 2 0.00000E+00 -1.42108E-02 -2.52105E-03 -1.25143E-04 3.85880E-04 -4.55392E-05 3 0.00000E+00 5.85368E-04 -5.94789E-03 4.84238E-04 1.14532E-04 -4.35644E-05 4 0.00000E+00 2.32575E-02 -5.82616E-03 1.57514E-03 -1.01359E-03 1.29737E-04 6 0.00000E+00 3.06346E-02 -3.65204E-03 4.76010E-04 2.81418E-03 -1.42899E-03 7 0.00000E+00 1.75625E-02 -5.12336E-03 7.13832E-03 -1.36608E-03 -7.98758E-04 8 0.00000E+00 1.25988E-02 1.47234E-02 -1.12395E-03 -6.72799E-03 2.38107E-03 9 0.00000E+00 5.17101E-02 3.54586E-02 4.23796E-03 -1.73280E-02 1.00225E-02 10 0.00000E+00 -2.12510E-03 7.39861E-04 -8.76007E-05 5.35347E-05 -2.90584E-05 11 0.00000E+00 -3.92889E-04 1.06614E-03 -2.85519E-04 7.42405E-05 -1.33502E-05

[0282] Among them, surface represents the surface number.

[0283] Table 15 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 14 The optical imaging system shown in .

[0284] Table 15 Focus lens position relationship

[0285] Pos1 Pos2 D0 inf 100 d1 -0.10 -2.06 d2 -0.24 -1.92

[0286] Where D0 represents the distance between the subject and the vertex of the first lens element closest to the object side. Pos1 represents the position of the focus group when focusing on a subject at infinity. Pos2 represents the front-to-back spacing of the focus group when focusing on a subject at a distance of 100mm. Inf represents infinity.

[0287] In some optional embodiments, the optical imaging module in the above embodiments may further include a turning prism, such as a right-angle prism, or a reflective lens.

[0288] Example 6

[0289] Figure 17 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 7 , Figure 18 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 10 one, Figure 19 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 10 Second, such as Figure 18 As shown, Figure 18 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 19 As shown, Figure 19 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 100 mm. Figure 17 As shown, the optical imaging module may include:

[0290] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0291] a second lens element 102 having negative refractive power, wherein both the object-side surface and the image-side surface of the second lens element 102 are concave;

[0292] a third lens element 103 having positive refractive power, wherein the object-side surface of the third lens element 103 is concave and the image-side surface is convex;

[0293] a fourth lens element 104 having negative refractive power, wherein both the object-side surface and the image-side surface of the fourth lens element 104 are concave;

[0294] The fifth lens element 105 has positive refractive power, wherein the object-side surface of the fifth lens element 105 is convex and the image-side surface is concave.

[0295] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0296] Table 16 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 17 The optical imaging system shown in .

[0297] Table 16 Optical structure data

[0298]

[0299]

[0300] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens; ASP represents the aspherical surface; image represents the imaging surface; d1 represents the air gap between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air gap between the focusing group and the lens closest to the fixed lens on the image side.

[0301] Table 17 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 17 The optical imaging system shown in .

[0302] Table 17 Aspheric coefficients

[0303] surface K A B C D E F 1 5.40980E-01 -6.35039E-04 -3.02700E-05 -7.04829E-06 3.87992E-07 -5.48491E-08 0.00000E+00 2 0.00000E+00 1.90422E-03 -3.54465E-04 -7.89345E-06 4.85644E-06 -6.26364E-07 2.99015E-08 3 0.00000E+00 -3.30217E-03 1.90263E-04 1.39628E-05 -1.17880E-06 1.73095E-08 0.00000E+00 4 -9.17616E+00 6.75319E-05 -5.28383E-04 1.53743E-04 -1.37295E-05 1.98346E-07 8.27458E-08 6 0.00000E+00 -3.00946E-03 -9.18190E-04 -3.64312E-06 6.37312E-06 -6.48629E-07 0.00000E+00 7 0.00000E+00 -1.37506E-03 -4.02497E-04 -5.50299E-05 1.20505E-05 -1.14095E-06 0.00000E+00 8 0.00000E+00 1.43240E-02 -1.71188E-03 1.11540E-04 2.85063E-05 -8.51407E-06 6.85648E-07 9 0.00000E+00 1.39351E-02 -1.25705E-03 1.27421E-04 4.02824E-06 -1.63329E-06 0.00000E+00 10 0.00000E+00 -3.51615E-03 4.66557E-06 2.04815E-05 2.89661E-08 -1.90597E-07 0.00000E+00 11 0.00000E+00 -4.90333E-03 1.22450E-04 -2.49900E-06 4.14364E-07 -7.58105E-08 0.00000E+00

[0304] Among them, surface represents the surface number.

[0305] Table 18 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 17 The optical imaging system shown in .

[0306] Table 18 Focus lens position relationship

[0307] Pos1 Pos2 D0 inf 100 d1 1.00 3.27 d2 7.86 5.59

[0308] Where D0 represents the distance between the subject and the vertex of the first lens element on the object side, Pos1 represents the position of the focusing group when focusing on a subject at infinity, and Pos2 represents the front-to-back spacing of the focusing group when focusing on a subject at a distance of 100mm. Inf represents infinity; d1 represents the air distance between the focusing group and the element closest to the fixed lens on the object side; and d2 represents the air distance between the focusing group and the element closest to the fixed lens on the image side.

[0309] Example 7

[0310] Figure 20 is a schematic diagram of the structure of an optical imaging module according to an exemplary embodiment Figure 8 , Figure 21 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 10 three, Figure 22 Schematic diagram of spherical aberration, astigmatism and distortion curves according to an exemplary embodiment Figure 10 Four, such as Figure 21 As shown, Figure 21 From left to right, they are the spherical aberration, astigmatism and distortion curves when the object distance is infinite. Figure 22 As shown, Figure 22 From left to right are the spherical aberration, astigmatism and distortion curves when the object distance is 500 mm. Figure 20 As shown, the optical imaging module may include:

[0311] a first lens element 101 having positive refractive power, wherein both the object-side surface and the image-side surface of the first lens element 101 are convex;

[0312] a second lens element 102 having negative refractive power, wherein the object-side surface of the second lens element 102 is convex and the image-side surface is concave;

[0313] a third lens element 103 having positive refractive power, wherein the object-side surface of the third lens element 103 is concave and the image-side surface is convex;

[0314] a fourth lens element 104 having negative refractive power, wherein the object-side surface of the fourth lens element 104 is convex and the image-side surface is concave;

[0315] The fifth lens element 105 has positive refractive power, wherein the object-side surface of the fifth lens element 105 is convex and the image-side surface is concave.

[0316] In other embodiments, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens may be made of plastic. Of course, other materials may also be used, which is not specifically limited here.

[0317] Table 19 shows the optical structure data of the optical imaging system according to an exemplary embodiment, corresponding to Figure 20 The optical imaging system shown in .

[0318] Table 19 Optical structure data

[0319] f： 19.89mm fno: 4.18 Half FOV: 10.6 degrees TYPE S R thi Nd Vd EFL flat OBJ inf D0 ASP 1 4.94380 2.74 1.543 56.1 7.8 ASP 2 -24.52870 0.10 ASP 3 8.49670 0.96 1.629 23.3 -8.2 ASP 4 3.06960 0.48 flat STO inf 0.27 ASP 6 -6.54850 1.12 1.654 21.3 33.8 ASP 7 -5.39600 d1 ASP 8 54.53020 0.95 1.522 48.4 -42.4 ASP 9 15.63950 1.10 ASP 10 13.05280 0.80 1.674 19.0 338.9 ASP 11 13.50180 d2 flat 12 inf 0.21 1.516 64.17 - flat 13 inf 1.70 flat 14 image -

[0320] Among them, f represents the overall focal length of the optical imaging module; fno represents the aperture value; HFOV represents the half field of view; TYPE represents the type of surface; S represents the surface number; R represents the radius of curvature; thi represents the thickness; Nd represents the refractive index; Vd represents the dispersion coefficient; EFL represents the focal length; OBJ represents the object; inf represents infinity; D0 represents the distance from the object to the vertex of the object-side surface of the first lens; ASP represents the aspherical surface; image represents the imaging surface; d1 represents the air gap between the focusing group and the lens closest to the fixed lens on the object side; d2 represents the air gap between the focusing group and the lens closest to the fixed lens on the image side.

[0321] Table 20 shows the aspheric coefficients according to an exemplary embodiment, corresponding to Figure 20 The optical imaging system shown in .

[0322] Table 20 Aspheric coefficients

[0323] surface K A B C D E F 1 7.26959E-01 -2.97968E-04 -2.57643E-05 1.99468E-06 -4.85120E-07 2.70247E-08 0.00000E+00 2 0.00000E+00 2.37050E-03 -1.28480E-04 -6.19635E-06 5.18614E-06 -5.65383E-07 4.57167E-08 3 -1.98449E+01 -3.83414E-03 -8.60239E-05 1.90660E-05 9.01807E-07 1.30677E-07 0.00000E+00 4 -3.54294E+00 2.27510E-03 -6.38411E-04 1.22916E-04 -5.63116E-06 -7.96380E-07 2.11335E-07 6 0.00000E+00 -6.77930E-05 -9.67318E-05 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 8 0.00000E+00 2.72577E-03 1.92913E-05 -8.20973E-05 3.18603E-05 -6.15073E-06 4.58166E-07 9 0.00000E+00 4.60576E-03 -3.75279E-05 -3.14166E-05 1.26244E-05 -1.87565E-06 0.00000E+00 10 0.00000E+00 1.18277E-03 -7.05315E-06 2.00116E-06 -2.23949E-07 0.00000E+00 0.00000E+00

[0324] Among them, surface represents the surface number.

[0325] Table 21 shows the position relationship of the focus lenses according to an exemplary embodiment, corresponding to Figure 20 The optical imaging system shown in .

[0326] Table 21 Focus lens position relationship

[0327] Pos1 Pos2 D0 inf 500 d1 0.11 1.83 d2 8.57 6.85

[0328] Where D0 represents the distance between the subject and the vertex of the first lens element on the object side, Pos1 represents the position of the focusing group when focusing on a subject at infinity, and Pos2 represents the front-to-back spacing of the focusing group when focusing on a subject at a distance of 100mm. Inf represents infinity; d1 represents the air distance between the focusing group and the element closest to the fixed lens on the object side; and d2 represents the air distance between the focusing group and the element closest to the fixed lens on the image side.

[0329] In this disclosed embodiment, the combination of a positive third lens element, a negative fourth lens element, and a positive fifth lens element effectively corrects aberrations, particularly field curvature and coma. Furthermore, the coordinated surface shapes of the various lenses also facilitate correction of field curvature, astigmatism, and distortion.

[0330] In the embodiment of the present disclosure, a method for distributing the optical power of the first lens and the third lens is specified. By having the positive refractive power of the first lens, the negative refractive power of the second lens, and the positive refractive power of the third lens, the total optical length can be shortened while also sharing the optical refractive power of the first lens, reducing the optical power of the first lens, and achieving a good achromatic effect.

[0331] The numerical examples of the corresponding parameters in each embodiment of Example 1 to Example 7 are as follows:

[0332] Conditional expression Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 f / f1 2.98 2.63 2.85 3.39 2.87 2.39 2.55 |f3 / f1| 1.70 1.22 2.10 1.55 1.47 1.47 4.27 TTL / IH 5.88 5.88 5.21 5.88 5.62 5.03 5.03 |f / f3| 1.76 2.16 1.36 2.18 1.96 1.63 0.60 <![CDATA[|f m / f|]]> 0.68 0.46 0.73 2.27 0.26 0.59 2.37 |f / f4| 1.43 0.78 0.41 4.28 3.90 1.97 0.47 |f / f5| 1.14 0.46 0.26 1.22 1.05 0.43 0.06 R1 / R2 -1.47 -1.79 -0.96 -1.70 -1.59 -0.31 -0.20 (R3+R4) / (R3-R4) -3.57 -5.80 -1.61 -1.21 -1.33 0.96 2.13 f / |R5|+f / |R6| 2.87 9.17 7.38 5.46 4.87 3.30 6.72 R7 / R8 2.45 1.24 1.11 6.48 6.25 -0.37 3.49 <![CDATA[L s / TTL]]> 0.75 0.73 0.63 0.83 0.83 0.79 0.78 Td / TTL 0.57 0.69 0.73 0.80 0.52 0.52 0.45 FOV 20.00 19.80 21.60 20.00 21.80 21.46 21.22 CRA 14.89 15.06 12.65 3.91 11.36 16.53 15.70 N5 1.58 1.54 1.51 1.54 1.54 1.67 1.68 f / Denp(Fno) 3.48 3.94 3.40 3.43 3.26 3.53 3.68 Vd1 55.71 55.71 55.71 55.71 55.71 55.91 56.10 Vd2 25.59 25.59 25.59 25.59 25.59 26.90 23.30

[0333] In some embodiments, the optical imaging module may be provided in an optical imaging device, which may include a camera device or other device for image acquisition.

[0334] In other embodiments, the optical imaging device may be provided in an electronic device, wherein the electronic device may include a mobile terminal and a fixed terminal. The mobile terminal may include a mobile phone, a laptop computer, a tablet computer, a wearable electronic device, etc., and the fixed terminal may include a personal computer device, a monitoring device, or a medical device. The electronic device involved in the embodiments of the present disclosure includes a display module, wherein the display module may be a display screen of the electronic device.

[0335] Figure 23 1 is a block diagram of the hardware structure of an electronic device according to an exemplary embodiment. For example, the electronic device 1200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0336] Reference Figure 23, the electronic device 1200 may include one or more of the following components: a processing component 1202 , a memory 1204 , a power component 1206 , a multimedia component 1208 , an audio component 1210 , an input / output (I / O) interface 1212 , a sensor component 1214 , and a communication component 1216 .

[0337] The processing component 1202 generally controls the overall operation of the electronic device 1200, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 1202 may include one or more processors. In addition, the processing component 1202 may include one or more modules to facilitate interaction between the processing component 1202 and other components. For example, the processing component 1202 may include a multimedia module to facilitate interaction between the multimedia component 1208 and the processing component 1202.

[0338] The memory 1204 is configured to store various types of data to support operations on the electronic device 1200. Examples of such data include instructions for any application or method operating on the electronic device 1200, contact data, phone book data, messages, pictures, videos, etc. The memory 1204 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0339] The power component 1206 provides power to the various components of the electronic device 1200. The power component 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1200.

[0340] The multimedia component 1208 includes a screen that provides an output interface between the electronic device 1200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front camera and / or a rear camera. When the electronic device 1200 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0341] The audio component 1210 is configured to output and / or input audio signals. For example, the audio component 1210 includes a microphone (MIC), which is configured to receive external audio signals when the electronic device 1200 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1204 or transmitted via the communication component 1216. In some embodiments, the audio component 1210 also includes a speaker for outputting audio signals.

[0342] I / O interface 1212 provides an interface between processing component 1202 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0343] The sensor assembly 1214 comprises components and sensors comprising one or more optical imaging modules described above, and is used to provide various aspects of status assessment for the electronic device 1200. For example, the sensor assembly 1214 can detect the open / closed state of the electronic device 1200, the relative positioning of components, such as the display and keypad of the electronic device 1200. The sensor assembly 1214 can also detect changes in the position of the electronic device 1200 or a component of the electronic device 1200, the presence or absence of user contact with the electronic device 1200, the orientation or acceleration / deceleration of the electronic device 1200, and changes in the temperature of the electronic device 1200. The sensor assembly 1214 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1214 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0344] The communication component 1216 is configured to facilitate wired or wireless communication between the electronic device 1200 and other devices. The electronic device 1200 can access a wireless network based on a communication standard, such as WI-FI, 2G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1216 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0345] In an exemplary embodiment, the electronic device 1200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0346] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1204 including instructions. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0347] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0348] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An optical imaging module, characterized in that: include: A first lens group and a second lens group are arranged in sequence along the optical axis from the object side to the imaging plane; The first lens group has positive refractive power and includes: a first lens having positive refractive power and a second lens having negative refractive power, arranged in sequence from the object side to the imaging plane; wherein both the object side surface and the image side surface of the first lens are convex surfaces; The second lens group includes: a plurality of lenses with refractive power, wherein the plurality of lenses with refractive power include: at least one movable lens; wherein the movable lens is used to: move along the optical axis to focus on objects at different distances; The at least one movable lens includes: a third lens, a fourth lens, and a fifth lens arranged in sequence from the object side to the imaging plane; The third lens has positive refractive power; The fourth lens has negative refractive power, and the image side surface of the fourth lens is concave; The fifth lens has positive refractive power, and the object side surface of the fifth lens is convex; or The third lens has negative refractive power, and the image side surface of the third lens is concave; The fourth lens has positive refractive power, and the object-side surface of the fourth lens is concave, and the image-side surface is convex; The fifth lens has negative refractive power, and the object-side surface of the fifth lens is concave.

2. The optical imaging module according to claim 1, wherein: Also includes: The aperture stop is located between the second lens and the second lens group, and is used to limit the aperture of the central principal light.

3. The optical imaging module according to claim 2, wherein: The distance L between the aperture stop and the imaging surface s The relationship between the distance TTL between the first lens and the imaging plane is as follows: L s / TTL<0.9。 4. The optical imaging module according to claim 1, wherein: Also includes: The field stop is located on the object side of the first lens and is used to limit the incident amount of marginal light.

5. The optical imaging module according to claim 1, wherein: The Abbe number Vd1 of the first lens is greater than 30; The Abbe number Vd2 of the second lens is less than 40.

6. The optical imaging module according to claim 1, wherein: The relationship between the overall focal length f of the optical imaging module and the focal length f1 of the first lens is as follows: 2 <f / f1<10。 7. The optical imaging module according to claim 1, wherein: The relationship between half the diagonal length IH of the effective sensing area of ​​the imaging plane and the distance TTL between the first lens and the imaging plane is as follows: 2.2 <TTL / IH<10。 8. The optical imaging module according to claim 1, wherein: When there are multiple movable lenses, the relationship between the overall focal length f of the optical imaging module and the combined focal lengths of the multiple movable lenses is as follows: 0.1<|f m / f|<3。 9. The optical imaging module according to claim 1, wherein: At least one of the third lens, the fourth lens, and the fifth lens is movable.

10. The optical imaging module according to claim 9, wherein: The relationship between the focal length f1 of the first lens and the focal length f3 of the third lens is as follows: 1<|f3 / f1|<5.

11. The optical imaging module according to claim 9, wherein: The relationship between the overall focal length f of the optical imaging module and the focal length f3 of the third lens is as follows: 0.5<|f / f3|<3.

12. The optical imaging module according to claim 9, wherein: The relationship between the overall focal length f of the optical imaging module and the focal length f4 of the fourth lens is as follows: 0<|f / f4|<6.

13. The optical imaging module according to claim 9, wherein: The relationship between the overall focal length f of the optical imaging module and the focal length f5 of the fifth lens is as follows: 0<|f / f5|<5.

14. The optical imaging module according to claim 9, wherein: The relationship between the curvature radius R1 of the object-side surface and the curvature radius R2 of the image-side surface of the first lens is as follows: -5 <R1 / R2<0。 15. The optical imaging module according to claim 9, wherein: The relationship between the curvature radius R3 of the object-side surface and the curvature radius R4 of the image-side surface of the second lens is as follows: -10<(R3+R4) / (R3-R4)<5.

16. The optical imaging module according to claim 9, wherein: The relationship between the curvature radius R5 of the object-side surface and the curvature radius R6 of the image-side surface of the third lens is as follows: 1 <f / |R5|+f / |R6|<15; Among them, f is the overall focal length of the optical imaging module.

17. The optical imaging module according to claim 9, wherein: The relationship between the curvature radius R7 of the object-side surface and the curvature radius R8 of the image-side surface of the fourth lens is as follows: -2 <R7 / R8<10。 18. The optical imaging module according to claim 9, wherein: The distance T between the vertex of the object-side surface of the first lens and the vertex of the image-side surface of the fifth lens d The relationship between the distance TTL between the vertex of the object-side surface of the first lens and the imaging plane is as follows: 0.4<T d / TTL<1。 19. The optical imaging module according to claim 9, wherein: The refractive index N5 of the fifth lens is less than 1.

8.

20. The optical imaging module according to any one of claims 1 to 19, characterized in that: The overall focal length f of the optical imaging module and the incident beam diameter D of the optical imaging module enp The relationship between them is as follows: f / D enp >2。 21. An optical imaging device, characterized in that: The optical imaging module comprises the optical imaging module according to any one of claims 1 to 20, wherein an image sensor component is provided on the image plane side of the optical imaging module.

22. An electronic device, characterized in that: Including the optical imaging device as described in claim 21.

Images