Optical lens, camera module and terminal device

Abstract

The application provides an optical lens, a camera module and a terminal device, and belongs to the optical technical field. The optical lens comprises a first lens group, a light path turning element and a second lens group; the first lens group, the light path turning element and the second lens group are arranged in sequence along a light entering direction, and the first lens group and the second lens group each comprise at least two lenses; the first lens group has positive focal power, and the second lens group has negative focal power; the first lens group is arranged on a first optical axis, the second lens group is arranged on a second optical axis, and at least one of the first lens group and the second lens group is arranged movably; the first optical axis and the second optical axis perpendicularly intersect at the light path turning element, and the light path turning element is used for turning the light path from the first optical axis to the second optical axis. The optical lens of the application can control the size on the first optical axis and the second optical axis in a small range, which is beneficial to the popularization and application of the optical lens in the terminal device.

Description

Technical Field

[0001] This application relates to the field of optical technology, and in particular to an optical lens, camera module and terminal device. Background Technology

[0002] Optical zoom is a technology that achieves a change in focal length. Optical zoom typically adjusts the position of lens components or the relative positions of lenses to change the focusing point of light, thereby adjusting the focal length. Optical zoom does not involve digital processing or image magnification, thus maintaining high image quality and clarity.

[0003] However, optical lenses with optical zoom capabilities in related technologies generally suffer from large size, which limits their widespread application in terminal devices. Summary of the Invention

[0004] This application provides an optical lens, a camera module, and a terminal device that can solve the problem that optical lenses with optical zoom function are generally large in size.

[0005] The technical solution is as follows:

[0006] On the one hand, an optical lens is provided, the optical lens comprising: a first lens group, an optical path deflection element, and a second lens group;

[0007] The first lens group, the optical path deflection element, and the second lens group are arranged sequentially along the light-incident direction, and the first lens group and the second lens group each include at least two lenses;

[0008] The first lens group has positive optical power, and the second lens group has negative optical power;

[0009] The first lens group is disposed on the first optical axis, the second lens group is disposed on the second optical axis, and at least one of the first lens group and the second lens group is movably disposed; the first optical axis and the second optical axis intersect perpendicularly at the optical path reversing element, the optical path reversing element being used to revers the optical path from the first optical axis to the second optical axis.

[0010] In this embodiment, the optical lens has a first lens group and a second lens group arranged on both sides of the optical path reversing element. The first lens group is arranged along the first optical axis, and the second lens group is arranged along the second optical axis. The two optical axes intersect perpendicularly on the optical path reversing element. One of the first lens group and the second lens group is movable, which enables the optical lens to have a zoom function. Since the two lens groups are arranged separately on the two optical axes, the size of the optical lens on the first optical axis and the second optical axis can be controlled within a small range, which is beneficial to the promotion and application of the optical lens in terminal devices.

[0011] In some possible implementations, the optical path deflection element is a prism element, which includes an incident surface, an exit surface, and a total reflection surface. The incident surface is perpendicular to the first optical axis, the exit surface is perpendicular to the second optical axis, and the first and second optical axes are perpendicular to the total reflection surface.

[0012] In some possible implementations, the focal length of the first lens group is fg1, the focal length of the optical lens when focused at infinity is fi, and the focal length of the optical lens when focused at near focus is fm, wherein 0.5 < |fg1 / fi| < 0.7, 0.65 < |fg1 / fm| < 0.75;

[0013] And / or,

[0014] The focal length of the second lens group is fg2, the focal length of the optical lens when focused at infinity is fi, and the focal length of the optical lens when focused at close range is fm, where 0.5 < |fg2 / fi| < 1.7, 0.6 < |fg2 / fm| < 2.0.

[0015] In some possible implementations, the first lens group includes a first lens, a second lens, and a third lens arranged sequentially along the light-gathering direction;

[0016] The first lens is a positive lens, the second lens is a negative lens, and the third lens is a positive lens.

[0017] In some possible implementations, the object-side surface of the first lens is convex, and the image-side surface of the first lens is either convex or concave; the object-side surface of the second lens is either convex or concave, and the image-side surface of the second lens is concave; the object-side surface of the third lens is either convex or concave, and the image-side surface of the second lens is convex.

[0018] In some possible implementations, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the optical lens when focused at infinity is fi, where 0.4 < |f1 / fi| < 0.5, 0.7 < |f2 / fi| < 1.1, and 1.4 < |f3 / fi| < 9.

[0019] In some possible implementations, when the optical path deflection element is a prism element, the optical path distance between the object-side surface of the first lens and the incident surface of the prism element along the first optical axis is OP1, and the focal length of the optical lens when focused at infinity is fi, where 0.2 <OP1 / fi<0.3。

[0020] In some possible implementations, when the optical path reversing element is a prism element, the effective optical diameter of the first lens is D, and the optical path distance of the light rays transmitted along the first optical axis and the second optical axis within the prism element is OP2, where 1.2 <D / OP2<1.7。

[0021] In some possible implementations, the second lens group includes a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the light-gathering direction;

[0022] The fourth lens is a negative lens, the fifth lens is a positive or negative lens, and the third lens is a positive or negative lens.

[0023] In some possible implementations, the object-side surface of the fourth lens is concave, and the image-side surface of the fourth lens is either convex or concave; the object-side surface of the fifth lens is either convex or concave, and the image-side surface of the fifth lens is either convex or concave; the object-side surface of the sixth lens is either convex or concave, and the image-side surface of the sixth lens is either convex or concave.

[0024] In some possible implementations, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the optical lens when focused at infinity is fi, where 0.4 < |f4 / fi| < 1.0, 1.9 < |f5 / fi| < 50, and 0.9 < |f6 / fi| < 10.

[0025] In some possible implementations, the optical lens includes a telephoto mode and a near-focus mode that can be switched between each other. In the telephoto mode, the distance between the second lens group and the optical path reversing element is M1, and in the near-focus mode, the distance between the second lens group and the optical path reversing element is M2, wherein M2 is greater than M1.

[0026] When the focal length of the optical lens at infinity is fi, 0.05 < |M2-M1| / fi < 0.9.

[0027] On the other hand, a camera module is provided, the camera module including: the optical lens described in this application, and an imaging module;

[0028] The optical lens is located on the light-inlet side of the imaging module;

[0029] The imaging module includes a sensor and a filter, with the filter located on the light-inlet side of the sensor.

[0030] On the other hand, a terminal device is provided, which includes the optical lens described in this application or the camera module described in this application. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the optical lens in telephoto mode provided in Embodiment 1 of this application;

[0033] Figure 2 This is a schematic diagram of the optical lens in near-focus mode provided in Embodiment 1 of this application;

[0034] Figure 3 This is a schematic diagram of the optical lens in telephoto mode provided in Embodiment 2 of this application;

[0035] Figure 4 This is a schematic diagram of the optical lens in near-focus mode provided in Embodiment 2 of this application;

[0036] Figure 5 This is a schematic diagram of the optical lens in telephoto mode provided in Embodiment 3 of this application;

[0037] Figure 6 This is a schematic diagram of the optical lens in near-focus mode provided in Embodiment 3 of this application;

[0038] Figure 7 This is a schematic diagram of the optical lens in telephoto mode provided in Embodiment 4 of this application;

[0039] Figure 8 This is a schematic diagram of the optical lens in near-focus mode provided in Embodiment 4 of this application;

[0040] Figure 9 This is a schematic diagram of the optical lens in telephoto mode provided in Embodiment 5 of this application;

[0041] Figure 10 This is a schematic diagram of the optical lens in near-focus mode provided in Embodiment 5 of this application;

[0042] Figure 11 This is a chromatic aberration curve of the optical lens in telephoto mode provided in Embodiment 1 of this application;

[0043] Figure 12 This is a field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 1 of this application;

[0044] Figure 13This is a chromatic aberration curve of the optical lens in near-focus mode provided in Embodiment 1 of this application;

[0045] Figure 14 This is a field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 2 of this application;

[0046] Figure 15 This is a chromatic aberration curve of the optical lens in telephoto mode provided in Embodiment 2 of this application;

[0047] Figure 16 This is a field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 2 of this application;

[0048] Figure 17 This is a chromatic aberration curve of the optical lens in near-focus mode provided in Embodiment 2 of this application;

[0049] Figure 18 This is a field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 2 of this application;

[0050] Figure 19 This is a chromatic aberration curve of the optical lens in telephoto mode provided in Embodiment 3 of this application;

[0051] Figure 20 This is a field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 3 of this application;

[0052] Figure 21 This is a chromatic aberration curve of the optical lens in near-focus mode provided in Embodiment 3 of this application;

[0053] Figure 22 This is a field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 3 of this application;

[0054] Figure 23 This is a chromatic aberration curve of the optical lens in telephoto mode provided in Embodiment 4 of this application;

[0055] Figure 24 This is a field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 4 of this application;

[0056] Figure 25 This is a chromatic aberration curve of the optical lens in near-focus mode provided in Embodiment 4 of this application;

[0057] Figure 26 This is a field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 4 of this application;

[0058] Figure 27 This is a chromatic aberration curve of the optical lens in telephoto mode provided in Embodiment 5 of this application;

[0059] Figure 28 This is a field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 5 of this application;

[0060] Figure 29 This is a chromatic aberration curve of the optical lens in near-focus mode provided in Embodiment 5 of this application;

[0061] Figure 30 This is a field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 5 of this application.

[0062] The reference numerals in the figure are respectively:

[0063] 100. Optical lens; 200. Imaging module;

[0064] 001, First optical axis; 002, Second optical axis;

[0065] 1. First lens group;

[0066] 11. First lens; 12. Second lens; 13. Third lens;

[0067] 2. Optical path switching element;

[0068] 21. Incident surface; 22. Exit surface; 23. Total reflection surface;

[0069] 3. Second lens group;

[0070] 31. Fourth lens; 32. Fifth lens; 33. Sixth lens;

[0071] 4. Filters;

[0072] 5. Sensors;

[0073] 6. Aperture. Detailed Implementation

[0074] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0075] In the description of this application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0076] It should be understood that in this application, "connection" and "connected" can both refer to a mechanical connection or a physical connection. That is, A and B being connected or connected can mean that there are fastened components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0077] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0078] Optical power indicates a lens's ability to deflect parallel light rays, reflecting its strength in converging or diverging light.

[0079] A positive lens, also known as a convex lens or converging lens, has a positive optical power. The shorter the focal length (the stronger the light-gathering ability), the greater the optical power.

[0080] A negative lens, also known as a concave lens or a diverging lens, has a negative optical power. The smaller the absolute value of the focal length (the stronger the divergence), the greater the negative value of the optical power.

[0081] Refractive power, also known as optical power or optical diopter, is a physical quantity that measures the ability of a lens or lens system to refract light. Refractive power indicates the lens's ability to converge or diverge parallel light rays; the higher the value, the stronger the light refraction. Positive lenses have positive refractive power, while negative lenses have negative refractive power.

[0082] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0083] On the one hand, combined with Figure 1 As shown, this embodiment provides an optical lens 100, which includes: a first lens group 1, an optical path deflection element 2, and a second lens group 3.

[0084] The first lens group 1, the optical path deflection element 2, and the second lens group 3 are arranged sequentially along the light-incoming direction, and the first lens group 1 and the second lens group 3 each include at least two lenses.

[0085] The first lens group 1 has positive optical power, and the second lens group 3 has negative optical power.

[0086] The first lens group 1 is disposed on the first optical axis 001, and the second lens group 3 is disposed on the second optical axis 002, and at least one of the first lens group 1 and the second lens group 3 is movably disposed; the first optical axis 001 and the second optical axis 002 intersect perpendicularly at the optical path turning element 2, and the optical path turning element 2 is used to turn the optical path from the first optical axis 001 to the second optical axis 002.

[0087] In this embodiment, the optical lens 100 has a first lens group 1 and a second lens group 3 arranged on both sides of the optical path reversing element 2. The first lens group 1 is arranged along the first optical axis 001, and the second lens group 3 is arranged along the second optical axis 002. The two optical axes intersect perpendicularly on the optical path reversing element 2. One of the first lens group 1 and the second lens group 3 is movable, which enables the optical lens 100 to have a zoom function. Since the two lens groups are arranged separately on the two optical axes, the size of the optical lens 100 on the first optical axis 001 and the second optical axis 002 can be controlled within a small range, which is beneficial to the promotion and application of the optical lens 100 in terminal devices.

[0088] For example, the first lens group 1 is movably disposed on the first optical axis 001, and the second lens group 3 is fixedly disposed on the second optical axis 002. In another example, the first lens group 1 is fixedly disposed on the first optical axis 001, and the second lens group 3 is disposed on the second optical axis 002. Yet another example, the first lens group 1 is movably disposed on the first optical axis 001, and the second lens group 3 is movably disposed on the second optical axis 002.

[0089] In order to achieve optical zoom, the optical lens 100 of this embodiment requires at least one lens group to be movable along the corresponding optical axis. Compared with a fixed lens group, a movable lens group not only needs to consider the size of the lens group itself, but also needs to reserve space for movement, thus occupying more space, which results in a larger size of the optical lens 100 in the optical axis direction. In this embodiment, the movable or fixed arrangement of the first lens group 1 and the second lens group 3 can have a variety of different combinations, and different arrangement schemes can be selected for different application scenarios.

[0090] Taking the application of optical lens 100 in a terminal device as an example, the first optical axis 001 corresponds to the thickness direction of the terminal device, and the second optical axis 002 corresponds to the length or width direction of the terminal device. When there is sufficient space in the thickness direction of the terminal device, but limited space in the length or width direction, the scheme of setting the first lens group 1 movably and the second lens group 3 fixedly is selected.

[0091] In this embodiment, the first lens group 1, which is closer to the object side, has positive optical power (converging light), while the second lens group 3, which is closer to the image side, has negative optical power (diverging light). This arrangement has advantages in aberration correction, system compactness, and optical path control.

[0092] The second lens group 3, with its negative optical power, can diverge peripheral rays, balancing the excessive convergence of the positive lens and bringing rays from different apertures to the same focal point, thus preventing excessive refraction of peripheral rays and resulting in focal point shift. The second lens group 3 can also introduce a reverse field curvature, which, by superimposing with the field curvature of the first lens group 1 with that of the positive optical power, makes the image plane flatter. The dispersive characteristics of the second lens group 3 can cancel chromatic aberration. The barrel distortion of the second lens group 3 partially cancels out the distortion of the first lens group 1, achieving overall distortion control.

[0093] The first lens group 1, with positive optical power, helps to quickly converge light on the object side, while the second lens group 3, with negative optical power, adjusts the light path through divergence on the image side, shortening the overall lens length while maintaining the focal length. The first lens group 1 on the object side also ensures that the principal ray is parallel to the optical axis, reducing perspective errors. The second lens group 3 on the image side adjusts the angle of the principal ray, ensuring that the light is perpendicular to the sensor 5, improving edge image quality. Its divergence effect expands the incident angle range of the image-side beam, reducing edge light obstruction (vignetting) and improving edge brightness uniformity.

[0094] In addition, the refractive power distribution of the first lens group 1 and the second lens group 3 can be flexibly adjusted to change the total focal length of the system and optimize the balance between focal length and aberration.

[0095] Combination Figure 1 As shown, in some possible embodiments, the optical path deflection element 2 is a prism element, which includes an incident surface 21, an exit surface 22 and a total reflection surface 23. The incident surface 21 is perpendicular to the first optical axis 001, and the exit surface 22 is perpendicular to the second optical axis 002. The first optical axis 001 and the second optical axis 002 are perpendicular to the total reflection surface 23.

[0096] With the above arrangement, the optical path turning element 2 can realize the turning of light on the first optical axis 001 and the second optical axis 002, so that the optical lens 100 is formed into a periscope optical lens 100, which can make full use of the thickness, length or width space inside the terminal device and improve the space utilization rate of the terminal device.

[0097] In some possible implementations, the focal length of the first lens group 1 is fg1, the focal length of the optical lens 100 when focused at infinity is fi, and the focal length of the optical lens 100 when focused at close range is fm, wherein 0.5 < |fg1 / fi| < 0.7, 0.65 < |fg1 / fm| < 0.75.

[0098] When the focal length of the first lens group 1 meets the above-mentioned ratio range, the first lens group 1 has good optical performance and a small size along the first optical axis 001.

[0099] In some possible implementations, the value of fg1 / fi can be, for example, 0.51, 0.52, 0.53, 0.55, 0.57, 0.6, 0.52, 0.62, 0.65, 0.67, 0.68, 0.69, etc.

[0100] In some possible implementations, the value of fg1 / fm can be, for example, 0.66, 0.67, 0.68, 0.7, 0.71, 0.73, 0.74, etc.

[0101] In some possible implementations, the focal length of the second lens group 3 is fg2, the focal length of the optical lens 100 when focused at infinity is fi, and the focal length of the optical lens 100 when focused at close range is fm, wherein 0.5 < |fg2 / fi| < 1.7, 0.6 < |fg2 / fm| < 2.0.

[0102] When the focal length of the second lens group 3 meets the above-mentioned ratio range, the second lens group 3 has good optical performance and a small size along the second optical axis 002.

[0103] In some possible implementations, the value of fg2 / fi can be, for example, 0.51, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.4, 1.5, 1.6, 1.68, 1.69, etc.

[0104] In some possible implementations, the value of fg2 / fm can be, for example, 0.61, 0.7, 1.0, 1.1, 1.2, 1.4, 1.5, 1.7, 1.8, 1.9, 1.99, etc.

[0105] Combination Figures 1 to 10As shown, in some possible embodiments, the first lens group 1 includes a first lens 11, a second lens 12, and a third lens 13 arranged sequentially along the light-incident direction; the first lens 11 is a positive lens, the second lens 12 is a negative lens, and the third lens 13 is a positive lens. The first lens group 1 in this embodiment includes three lenses, has a simple structure, fewer lenses, and a smaller thickness.

[0106] Combination Figures 1 to 10 As shown, in some possible embodiments, the object-side surface of the first lens 11 is convex, and the image-side surface of the first lens 11 is either convex or concave; the object-side surface of the second lens 12 is either convex or concave, and the image-side surface of the second lens 12 is concave; the object-side surface of the third lens 13 is either convex or concave, and the image-side surface of the second lens 12 is convex.

[0107] With the above arrangement, the first lens group 1 has positive optical power, can quickly converge light rays, and can also make the principal ray incident parallel to the optical axis, reducing perspective error. Moreover, the size of the first lens group 1 along the first optical axis 001 is small.

[0108] In some possible implementations, the focal length of the first lens 11 is f1, the focal length of the second lens 12 is f2, the focal length of the third lens 13 is f3, and the focal length of the optical lens 100 when focused at infinity is fi, where 0.4 < |f1 / fi| < 0.5, 0.7 < |f2 / fi| < 1.1, and 1.4 < |f3 / fi| < 9.

[0109] When the focal lengths of the first lens 11, the second lens 12, and the third lens 13 meet the above-mentioned range, the first lens group 1 has positive optical power and, while ensuring good optical performance, has a smaller axial dimension.

[0110] In some possible implementations, the value of |f1 / fi| can be, for example, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, etc.

[0111] In some possible implementations, the value of |f2 / fi| can be, for example, 0.71, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.05, etc.

[0112] In some possible implementations, the value of |f3 / fi| can be, for example, 1.41, 2.0, 3.0, 5.0, 7.0, 8.0, 8.5, 8.9, etc.

[0113] Combination Figure 1As shown, in some possible embodiments, when the optical path deflection element 2 is a prism element, the optical path distance between the light rays transmitted along the first optical axis 001 and the object-side surface of the first lens 11 and the incident surface 21 of the prism element is OP1, and the focal length of the optical lens 100 when focused at infinity is fi, where 0.2 <OP1 / fi<0.3。

[0114] When the optical path distance on the first optical axis 001 and the focal length fi in the optical lens 100 meet the above ratio range, the size of the optical lens 100 along the first optical axis 001 is smaller while meeting the focal length requirements, which is beneficial to the size optimization of the optical lens 100.

[0115] In some possible implementations, the value of OP1 / fi may be, for example, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, etc.

[0116] Combination Figure 1 As shown, in some possible embodiments, when the optical path reversing element 2 is a prism element, the effective optical diameter of the first lens 11 is D, and the optical path distance of the light rays transmitted along the first optical axis 001 and the second optical axis 002 within the prism element is OP2, where 1.2 <D / OP2<1.7。

[0117] When the first lens group 1 and the prism element meet the above value range, the first lens group 1 can quickly converge the light and make the main light ray parallel to the optical axis and incident into the prism element, reducing perspective error. The first lens group 1 and the prism element can be arranged in a compact manner, thereby realizing the compact layout of the optical lens 100 along the first optical axis 001.

[0118] Combination Figures 1 to 10 As shown, in some possible embodiments, the second lens group 3 includes a fourth lens 31, a fifth lens 32 and a sixth lens 33 arranged sequentially along the light-gathering direction; the fourth lens 31 is a negative lens, the fifth lens 32 is a positive lens or a negative lens, and the third lens 13 is a positive lens or a negative lens.

[0119] The second lens group 3 in this embodiment includes three lenses, which has a smaller number of lenses, a simpler structure, and a smaller axial dimension.

[0120] In some possible implementations, the object side of the fourth lens 31 is concave, and the image side of the fourth lens 31 is convex or concave; the object side of the fifth lens 32 is convex or concave, and the image side of the fifth lens 32 is convex or concave; the object side of the sixth lens 33 is convex or concave, and the image side of the sixth lens 33 is convex or concave.

[0121] With the above arrangement, the second lens group 3 has negative optical power, which can diverge edge rays, balance the excessive convergence of the positive lens, and make rays of different apertures tend to converge to the same focal point, avoiding excessive refraction of edge rays and causing focal point shift. It can also introduce a reverse field curvature, which, by superimposing with the field curvature of the first lens group 1 with positive optical power, makes the image plane tend to be flatter. The dispersion characteristics can compensate for chromatic aberration.

[0122] In some possible implementations, the focal length of the fourth lens 31 is f4, the focal length of the fifth lens 32 is f5, the focal length of the sixth lens 33 is f6, and the focal length of the optical lens 100 when focused at infinity is fi, where 0.4 < |f4 / fi| < 1.0, 1.9 < |f5 / fi| < 50, and 0.9 < |f6 / fi| < 10.

[0123] When the focal lengths of the fourth lens 31, the fifth lens 32, and the sixth lens 33 meet the above-mentioned range, the first lens group 1 has positive optical power and, while ensuring good optical performance, has a smaller axial dimension.

[0124] In some possible implementations, the value of |f4 / fi| can be, for example, 0.41, 0.5, 0.6, 0.7, 0.8, 0.9, 0.99, etc.

[0125] In some possible implementations, the value of |f5 / fi| can be, for example, 1.91, 3, 10, 20, 30, 40, 45, 49, etc.

[0126] In some possible implementations, the value of |f6 / fi| can be, for example, 0.91, 1, 1.5, 2, 2.5, 3, 5, 7, 9, 9.5, etc.

[0127] Combination Figure 1 and Figure 2 As shown, in some possible implementations, the first lens group 1 is fixedly disposed, and the second lens group 3 is movably disposed.

[0128] The optical lens 100 includes a telephoto mode and a close-focus mode that can be switched between each other. In the telephoto mode, the distance between the second lens group 3 and the optical path reversing element 2 is M1. In the close-focus mode, the distance between the second lens group 3 and the optical path reversing element 2 is M2, where M2 is greater than M1. When the focal length of the optical lens 100 at infinity is fi, 0.05 < |M2-M1| / fi < 0.9.

[0129] With the above arrangement, the first lens group 1 in the optical lens 100 is fixedly set, and the second lens group 3 is movably arranged, so as to realize the switching between the telephoto mode and the near-photo mode of the optical lens 100.

[0130] In some possible implementations, the value of |M2-M1| / fi is, for example, 0.06, 0.1, 0.3, 0.5, 0.7, 0.8, 0.89, etc.

[0131] In some possible implementations, the first lens group 1 and the optical path reversing element 2 are assembled as a single unit, and then assembled and connected to the second lens group 3. In other possible implementations, the second lens group 3 and the optical path reversing element 2 are assembled as a single unit, and then assembled and connected to the first lens group 1.

[0132] Combination Figures 1 to 10 As shown, in some possible embodiments, the optical lens 100 further includes an aperture stop 6, which is located within the first lens 11. The aperture stop 6 controls the amount of light entering the image by adjusting its aperture size, thereby affecting the brightness of the image and achieving correct exposure.

[0133] Example 1

[0134] Figure 1 and Figure 2 The diagrams show the structure of the optical lens 100 provided in Embodiment 1 in both telephoto and near-focus modes. The first lens group 1 of the optical lens 100 is fixedly disposed, and the second lens group 3 is movably disposed. From the object side to the image side, it sequentially includes a first lens 11, a second lens 12, a third lens 13, a prism element, a fourth lens 31, a fifth lens 32, and a sixth lens 33. The first lens 11 has an object-side surface S1 and an image-side surface S2; the second lens 12 has an object-side surface S3 and an image-side surface S4; the third lens 13 has an object-side surface S5 and an image-side surface S6; the prism element has an object-side surface S7, a reflecting surface S8, and an image-side surface S9; the fourth lens 31 has an object-side surface S10 and an image-side surface S11; the fifth lens 32 has an object-side surface S12 and an image-side surface S13; and the sixth lens 33 has an object-side surface S14 and an image-side surface S15. The optical lens 100 also includes an aperture stop 6 disposed on the first lens 11. Light from the object passes sequentially through each surface S1 to S15 and is finally imaged onto an imaging surface (not shown).

[0135] Table 1 shows the basic parameters of each lens in the optical lens of Embodiment 1, and Table 2 shows the zoom parameters in the optical lens of Embodiment 1.

[0136] Table 1

[0137]

[0138]

[0139] Table 2

[0140]

[0141] Figure 11 and Figure 12 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 1 of this application. Figure 13 and Figure 14 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 1 of this application. Figures 11 to 14 As can be seen, the optical lens given in Example 1 can achieve good imaging quality at different focal lengths.

[0142] Example 2

[0143] Figure 3 and Figure 4 The diagrams show the structure of the optical lens provided in Embodiment 2 in telephoto and near-focus modes. The first lens group 1 of the optical lens 100 is fixedly disposed, and the second lens group 3 is movably disposed. From the object side to the image side, it sequentially includes a first lens 11, a second lens 12, a third lens 13, a prism element, a fourth lens 31, a fifth lens 32, and a sixth lens 33. The first lens 11 has an object-side surface S1 and an image-side surface S2; the second lens 12 has an object-side surface S3 and an image-side surface S4; the third lens 13 has an object-side surface S5 and an image-side surface S6; the prism element has an object-side surface S7, a reflecting surface S8, and an image-side surface S9; the fourth lens 31 has an object-side surface S10 and an image-side surface S11; the fifth lens 32 has an object-side surface S12 and an image-side surface S13; and the sixth lens 33 has an object-side surface S14 and an image-side surface S15. The optical lens 100 also includes an aperture stop 6 disposed on the first lens 11. Light from the object passes sequentially through each surface S1 to S15 and is finally imaged on an imaging surface (not shown).

[0144] Table 3 shows the basic parameters of each lens in the optical lens of Embodiment 2, and Table 4 shows the zoom parameters in the optical lens of Embodiment 2.

[0145] Table 3

[0146] Face number Surface type R value thickness Material Refractive index Abbe number Refraction mode Half-aperture surface spherical unlimited A Aperture spherical unlimited -1.468 refraction 3.39 S1 Qcon aspherical surface 4.63 2.071 PC 1.546 56.135 refraction 3.39 S2 Qcon aspherical surface -4303.24 0.169 refraction 3.22 S3 Qcon aspherical surface 34.93 0.4 PC 1.677 19.238 refraction 2.999 S4 Qcon aspherical surface 8.827 0.748 refraction 2.733 S5 Qcon aspherical surface 24.028 0.41 PC 1.645 22.03 refraction 2.69 S6 Qcon aspherical surface -4033.95 0.18 refraction 2.53 S7 spherical unlimited 4.86 GL 1.79 47.56 refraction 2.45 S8 spherical unlimited B refraction 1.68 S9 Qcon aspherical surface -7.373 1.61 PC 1.58 34.767 refraction 1.779 S10 Qcon aspherical surface 8.936 0.34 refraction 1.836 S11 Qcon aspherical surface 31.193 1.6 PC 1.68 18.999 refraction 2.039 S12 Qcon aspherical surface -24.147 0.256 refraction 2.545 S13 Qcon aspherical surface 24.946 2.14 PC 1.546 56.1354 refraction 2.77 S14 Qcon aspherical surface 55.51 C refraction 3.205 S15 spherical unlimited 3.53 refraction 3.039 Image spherical unlimited 0 refraction 3.577

[0147] Table 4

[0148]

[0149] Figure 15 and Figure 16 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 2 of this application. Figure 17 and Figure 18 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 2 of this application. Figures 15 to 18 It can be seen that the optical lens given in Example 2 can achieve good imaging quality at different focal lengths.

[0150] Example 3

[0151] Figure 5 and Figure 6 The diagrams show the structure of the optical lens provided in Embodiment 3 in telephoto and near-focus modes. The first lens group 1 of the optical lens 100 is fixedly disposed, and the second lens group 3 is movably disposed. From the object side to the image side, it sequentially includes a first lens 11, a second lens 12, a third lens 13, a prism element, a fourth lens 31, a fifth lens 32, and a sixth lens 33. The first lens 11 has an object-side surface S1 and an image-side surface S2; the second lens 12 has an object-side surface S3 and an image-side surface S4; the third lens 13 has an object-side surface S5 and an image-side surface S6; the prism element has an object-side surface S7, a reflecting surface S8, and an image-side surface S9; the fourth lens 31 has an object-side surface S10 and an image-side surface S11; the fifth lens 32 has an object-side surface S12 and an image-side surface S13; and the sixth lens 33 has an object-side surface S14 and an image-side surface S15. The optical lens 100 also includes an aperture stop 6 disposed on the first lens 11. Light from the object passes sequentially through each surface S1 to S15 and is finally imaged onto an imaging surface (not shown).

[0152] Table 5 shows the basic parameters of each lens in the optical lens of Embodiment 3, and Table 6 shows the zoom parameters in the optical lens of Embodiment 3.

[0153] Table 5

[0154] Face number Surface type R value thickness Material Refractive index Abbe number Refraction mode Half-aperture surface spherical unlimited A Aperture spherical unlimited -1.185 refraction 3.13 S1 spherical 4.696 1.717 GL 1.561 67.19 refraction 3.13 S2 Qcon aspherical surface -163.55 0.452 refraction 2.97 S3 Qcon aspherical surface 28.206 0.4 PC 1.646 21.407 refraction 2.689 S4 Qcon aspherical surface 7.723 0.366 refraction 2.489 S5 Qcon aspherical surface 25.344 0.419 PC 1.638 22.595 refraction 2.458 S6 Qcon aspherical surface -433.403 0.396 refraction 2.17 S7 spherical unlimited 4.5 GL 1.79 48.109 refraction 2.25 S8 spherical unlimited B refraction 1.58 S9 Qcon aspherical surface -4.834 0.91 PC 1.546 56.135 refraction 1.739 S10 Qcon aspherical surface 74.589 0.384 refraction 1.91 S11 Qcon aspherical surface -40.114 1.6 PC 1.68 18.999 refraction 1.969 S12 Qcon aspherical surface -20.904 0.108 refraction 2.613 S13 Qcon aspherical surface 34.636 2.14 PC 1.546 56.1354 refraction 2.9 S14 Qcon aspherical surface -54.656 C refraction 3.24 S15 spherical unlimited 3.67 refraction 3.099 Image spherical unlimited 0 refraction 3.577

[0155] Table 6

[0156]

[0157] Figure 19 and Figure 20 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 3 of this application. Figure 21 and Figure 22 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 3 of this application. Figures 19 to 22 It can be seen that the optical lens given in Example 3 can achieve good imaging quality at different focal lengths.

[0158] Example 4

[0159] Figure 7 and Figure 8The diagrams show the structure of the optical lens provided in Embodiment 4 in telephoto and near-focus modes. The first lens group 1 of the optical lens 100 is fixedly disposed, and the second lens group 3 is movably disposed. From the object side to the image side, it sequentially includes a first lens 11, a second lens 12, a third lens 13, a prism element, a fourth lens 31, a fifth lens 32, and a sixth lens 33. The first lens 11 has an object-side surface S1 and an image-side surface S2; the second lens 12 has an object-side surface S3 and an image-side surface S4; the third lens 13 has an object-side surface S5 and an image-side surface S6; the prism element has an object-side surface S7, a reflecting surface S8, and an image-side surface S9; the fourth lens 31 has an object-side surface S10 and an image-side surface S11; the fifth lens 32 has an object-side surface S12 and an image-side surface S13; and the sixth lens 33 has an object-side surface S14 and an image-side surface S15. The optical lens 100 also includes an aperture stop 6 disposed on the first lens 11. Light from the object passes sequentially through each surface S1 to S15 and is finally imaged on an imaging surface (not shown).

[0160] Table 7 shows the basic parameters of each lens in the optical lens of Embodiment 4, and Table 8 shows the zoom parameters in the optical lens of Embodiment 4.

[0161] Table 7

[0162] Face number Surface type R value thickness Material Refractive index Abbe number Refraction mode Half-aperture surface spherical unlimited A Aperture spherical unlimited -1.049 refraction 3.09 S1 spherical 4.893 1.497 GL 1.758 52.32 refraction 3.09 S2 spherical 27.975 0.182 refraction 2.915 S3 Qcon aspherical surface 17.784 0.4 PC 1.65 21.154 refraction 2.747 S4 Qcon aspherical surface 6.648 0.743 refraction 2.499 S5 Qcon aspherical surface -13.872 0.398 PC 1.598 30.054 refraction 2.452 S6 Qcon aspherical surface -12.507 0.279 refraction 2.319 S7 spherical unlimited 4.7 GL 1.788 48.268 refraction 2.35 S8 spherical unlimited B refraction 1.6 S9 Qcon aspherical surface -4.622 0.4 PC 1.546 56.135 refraction 1.86 S10 Qcon aspherical surface 991.969 0.625 refraction 1.96 S11 spherical 25.6 1.6 PC 1.633 23.411 refraction 2.187 S12 Qcon aspherical surface 27.238 0.1 refraction 2.618 S13 Qcon aspherical surface 9.7 2.14 PC 1.546 56.1354 refraction 2.793 S14 Qcon aspherical surface -49.29 C refraction 3.166 S15 spherical unlimited 4.489 refraction 2.975 Image spherical unlimited 0 refraction 3.577

[0163] Table 8

[0164]

[0165] Figure 23 and Figure 24 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 4 of this application. Figure 23 and Figure 24 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 4 of this application. Figures 21 to 24 It can be seen that the optical lens given in Example 4 can achieve good imaging quality at different focal lengths.

[0166] Example 5

[0167] Figure 9 and Figure 10The diagrams show the structure of the optical lens provided in Embodiment 5 in telephoto and near-focus modes. The first lens group 1 of the optical lens 100 is fixedly disposed, and the second lens group 3 is movably disposed. From the object side to the image side, it sequentially includes a first lens 11, a second lens 12, a third lens 13, a prism element, a fourth lens 31, a fifth lens 32, and a sixth lens 33. The first lens 11 has an object-side surface S1 and an image-side surface S2; the second lens 12 has an object-side surface S3 and an image-side surface S4; the third lens 13 has an object-side surface S5 and an image-side surface S6; the prism element has an object-side surface S7, a reflecting surface S8, and an image-side surface S9; the fourth lens 31 has an object-side surface S10 and an image-side surface S11; the fifth lens 32 has an object-side surface S12 and an image-side surface S13; and the sixth lens 33 has an object-side surface S14 and an image-side surface S15. The optical lens 100 also includes an aperture stop 6 disposed on the first lens 11. Light from the object passes sequentially through each surface S1 to S15 and is finally imaged on an imaging surface (not shown).

[0168] Table 9 shows the basic parameters of each lens in the optical lens of Embodiment 5, and Table 10 shows the zoom parameters in the optical lens of Embodiment 5.

[0169] Table 9

[0170] Face number Surface type R value thickness Material Refractive index Abbe number Refraction mode Half-aperture surface spherical unlimited A Aperture spherical unlimited -1.155 refraction 3.544 S1 Qcon aspherical surface 5.72 2.66 PC 1.548 53.526 refraction 3.544 S2 Qcon aspherical surface -12.207 0.124 refraction 3.294 S3 Qcon aspherical surface -11.482 0.403 PC 1.623 24.893 refraction 3.199 S4 Qcon aspherical surface 27.768 1.195 refraction 2.982 S5 Qcon aspherical surface -34.858 0.637 PC 1.546 55.999 refraction 2.72 S6 Qcon aspherical surface -9.726 0.145 refraction 2.709 S7 spherical unlimited 4.43 GL 1.8 47.159 refraction 2.643 S8 spherical unlimited B refraction 2.3 S9 Qcon aspherical surface -10.411 0.4 PC 1.546 55.993 refraction 2.182 S10 Qcon aspherical surface 8.396 0.62 refraction 2.04 S11 Qcon aspherical surface 19.503 1.425 PC 1.592 31.442 refraction 2.045 S12 Qcon aspherical surface 50.427 1.89 refraction 2.315 S13 Qcon aspherical surface -26.465 1.39 PC 1.546 55.999 refraction 2.912 S14 Qcon aspherical surface -38.523 C refraction 3.189 S15 spherical unlimited 2.175 refraction 3.217 Image spherical unlimited 0 refraction 3.474

[0171] Table 10

[0172]

[0173] Figure 27 and Figure 28 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in telephoto mode provided in Embodiment 5 of this application. Figure 29 and Figure 30 These are the chromatic aberration curve and field curvature distortion diagram of the optical lens in near-focus mode provided in Embodiment 5 of this application. Figures 27 to 30 It can be seen that the optical lens given in Example 5 can achieve good imaging quality at different focal lengths.

[0174] On the other hand, combining Figure 1 As shown, this embodiment provides a camera module, which includes: an optical lens 100 of this application and an imaging module 200; the optical lens 100 is located on the light-inlet side of the imaging module 200; the imaging module 200 includes a sensor 5 and a filter 4, with the filter 4 located on the light-inlet side of the sensor 5.

[0175] The camera module in this embodiment uses the optical lens 100 of this application and has all the beneficial technical effects of all embodiments herein.

[0176] In some possible implementations, sensor 5 is used to capture light and convert it into a digital image. Sensor 5 consists of thousands of photosensitive units (pixels), each capable of sensing the intensity and color of light. Optionally, sensor 5 can be of any of the following types:

[0177] Complementary Metal Oxide Semiconductor (CMOS) Sensors: CMOS sensors are currently the most common type of camera sensor, offering advantages such as low power consumption, high integration, and cost-effectiveness. CMOS sensors enable fast readout and high-resolution images, making them suitable for most digital cameras and mobile phone cameras.

[0178] Charge Coupled Device (CCD) Sensor: CCD sensors were widely used in digital cameras in the past because they have high image quality and low noise levels.

[0179] Back-Side Illuminated (BSI) Sensor: A BSI sensor is an improved CMOS sensor in which the photodiode is located on the back of the sensor, which can improve the light reception efficiency and thus improve shooting performance in low light conditions.

[0180] Foveon Sensors: Foveon sensors employ a structure different from traditional Bayer arrays, enabling them to capture red, green, and blue color information simultaneously at each pixel, thereby providing higher image quality and color reproduction.

[0181] On the other hand, this embodiment provides a terminal device, which includes the optical lens of this application or the camera module of this application.

[0182] The terminal device in this embodiment uses the optical lens or camera module of this application and has all the beneficial technical effects of all embodiments herein.

[0183] In some possible implementations, the terminal device may also include radio frequency (RF) circuitry, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply, among other components.

[0184] The variable aperture or camera module is electrically connected to the processor. The processor is the control center of the terminal device, connecting various parts of the phone via various interfaces and lines. It performs various functions and processes data by running or executing software programs and / or modules stored in the memory, and by calling data stored in the memory, thereby providing overall monitoring of the phone. Optionally, the processor may include one or more processing cores; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly handles the operation of the storage medium, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may also not be integrated into the processor.

[0185] In some possible implementations, the terminal device can be any of a variety of computer system devices that are mobile or portable and perform wireless communication. Specifically, the terminal device can be a mobile phone or smartphone (e.g., an iPhone™-based phone, an Android™-based phone), a portable gaming device (e.g., a Nintendo DS™, a PlayStation Portable™, a Gameboy Advance™, an iPhone™), a laptop computer, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and devices such as headphones. The terminal device can also be other wearable devices that require charging (e.g., head-mounted devices (HMDs) such as electronic bracelets, electronic necklaces, terminal devices, or smartwatches).

[0186] The terminal device can also be any one of multiple terminal devices, including but not limited to cellular phones, smartphones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transport instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbooks, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Image Experts Group (MPEG-1 or MPEGG-2) audio layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0187] In some cases, a terminal device can perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). If desired, the terminal device can be such as a cellular phone, media player, other handheld device, wristwatch, pendant device, handset device, or other compact portable device.

[0188] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0189] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0190] Unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0191] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0192] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An optical lens (100), characterized in that, The optical lens (100) includes: a first lens group (1), an optical path deflection element (2), and a second lens group (3); The first lens group (1), the optical path deflection element (2), and the second lens group (3) are arranged sequentially along the light-incident direction, and the first lens group (1) and the second lens group (3) each include at least two lenses; The first lens group (1) has positive optical power, and the second lens group (3) has negative optical power; The first lens group (1) is disposed on the first optical axis (001), and the second lens group (3) is disposed on the second optical axis (002), and at least one of the first lens group (1) and the second lens group (3) is movably disposed; the first optical axis (001) and the second optical axis (002) intersect perpendicularly at the optical path turning element (2), and the optical path turning element (2) is used to turn the optical path from the first optical axis (001) to the second optical axis (002).

2. The optical lens (100) according to claim 1, characterized in that, The optical path deflection element (2) is a prism element, which includes an incident surface (21), an exit surface (22) and a total reflection surface (23). The incident surface (21) is perpendicular to the first optical axis (001), and the exit surface (22) is perpendicular to the second optical axis (002). The first optical axis (001) and the second optical axis (002) are perpendicular to the total reflection surface (23).

3. The optical lens (100) according to claim 1 or 2, characterized in that, The focal length of the first lens group (1) is fg1, the focal length of the optical lens (100) when focused at infinity is fi, and the focal length of the optical lens (100) when focused at near focus is fm, wherein 0.5 < |fg1 / fi| < 0.7, 0.65 < |fg1 / fm| < 0.75; And / or, The focal length of the second lens group (3) is fg2, the focal length of the optical lens (100) when focusing at infinity is fi, and the focal length of the optical lens (100) when focusing at near focus is fm, where 0.5 < |fg2 / fi| < 1.7, 0.6 < |fg2 / fm| < 2.

0.

4. The optical lens (100) according to any one of claims 1 to 3, characterized in that, The first lens group (1) includes a first lens (11), a second lens (12) and a third lens (13) arranged sequentially along the light-gathering direction; The first lens (11) is a positive lens, the second lens (12) is a negative lens, and the third lens (13) is a positive lens.

5. The optical lens (100) according to claim 4, characterized in that, The object side of the first lens (11) is convex, and the image side of the first lens (11) is either convex or concave; the object side of the second lens (12) is either convex or concave, and the image side of the second lens (12) is concave; the object side of the third lens (13) is either convex or concave, and the image side of the second lens (12) is convex.

6. The optical lens (100) according to claim 4, characterized in that, The focal length of the first lens (11) is f1, the focal length of the second lens (12) is f2, the focal length of the third lens (13) is f3, and the focal length of the optical lens (100) when focused at infinity is fi, where 0.4 < |f1 / fi| < 0.5, 0.7 < |f2 / fi| < 1.1, and 1.4 < |f3 / fi| < 9.

7. The optical lens (100) according to claim 4, characterized in that, When the optical path deflection element (2) is a prism element, the optical path distance between the object-side surface of the first lens (11) and the incident surface (21) of the prism element along the first optical axis (001) is OP1, and the focal length of the optical lens (100) when focused at infinity is fi, where 0.2 <OP1 / fi<0.3。 8. The optical lens (100) according to claim 4, characterized in that, When the optical path reversing element (2) is a prism element, the effective optical diameter of the first lens (11) is D, and the optical path distance of the light rays transmitted along the first optical axis (001) and the second optical axis (002) within the prism element is OP2, where 1.2 <D / OP2<1.7。 9. The optical lens (100) according to any one of claims 1 to 8, characterized in that, The second lens group (3) includes a fourth lens (31), a fifth lens (32) and a sixth lens (33) arranged sequentially along the light-gathering direction; The fourth lens (31) is a negative lens, the fifth lens (32) is a positive or negative lens, and the third lens (13) is a positive or negative lens.

10. The optical lens (100) according to claim 9, characterized in that, The object side of the fourth lens (31) is concave, and the image side of the fourth lens (31) is convex or concave; the object side of the fifth lens (32) is convex or concave, and the image side of the fifth lens (32) is convex or concave; the object side of the sixth lens (33) is convex or concave, and the image side of the sixth lens (33) is convex or concave.

11. The optical lens (100) according to claim 9, characterized in that, The focal length of the fourth lens (31) is f4, the focal length of the fifth lens (32) is f5, the focal length of the sixth lens (33) is f6, and the focal length of the optical lens (100) when focused at infinity is fi, where 0.4 < |f4 / fi| < 1.0, 1.9 < |f5 / fi| < 50, and 0.9 < |f6 / fi| < 10.

12. The optical lens (100) according to any one of claims 1 to 11, characterized in that, The first lens group (1) is fixed, and the second lens group (3) is movable; The optical lens (100) includes a telephoto mode and a near-focus mode that can be switched between each other. In the telephoto mode, the distance between the second lens group (3) and the optical path reversing element (2) is M1. In the near-focus mode, the distance between the second lens group (3) and the optical path reversing element (2) is M2, wherein M2 is greater than M1. When the focal length of the optical lens (100) at infinity is fi, 0.05 < |M2-M1| / fi < 0.

9.

13. A camera module, characterized in that, The camera module includes: an optical lens (100) according to any one of claims 1 to 12, and an imaging module (200); The optical lens (100) is located on the light-inlet side of the imaging module (200); The imaging module (200) includes a sensor (5) and a filter (4), with the filter (4) located on the light-inlet side of the sensor (5).

14. A terminal device, characterized in that, The terminal device includes an optical lens (100) according to any one of claims 1 to 12, or a camera module according to claim 13.

Images