Optical lens, optical module and electronic device

Abstract

The application discloses an optical lens, an optical module and an electronic device. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from an object side to an image side along an optical axis, and optical centers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are located on the same straight line. The first lens, the second lens, the fourth lens and the fifth lens are spherical lenses, and the third lens, the sixth lens and the seventh lens are cylindrical lenses. The first lens, the third lens, the fifth lens and the seventh lens are negative lenses, and the second lens, the fourth lens and the sixth lens are positive lenses.

Description

Technical Field

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

[0002] With the rapid development of mobile internet technology, short videos, vlogs, and mobile short films are becoming increasingly popular, and users' demands for images captured by electronic devices are constantly rising. For example, improving the camera performance of electronic devices and using external lenses can enhance their photographic capabilities. Taking anamorphic lenses as an example, it's possible to capture cinematic-quality images on electronic devices, meeting users' professional shooting needs. However, current anamorphic lenses, due to their different focal lengths in the horizontal and vertical directions, exhibit significant differences in astigmatism at different object distances, resulting in large variations in resolution at different object distances and a narrow range of resolving distances. Summary of the Invention

[0003] This application provides an optical lens, an optical module, and an electronic device to solve the problem that current anamorphic lenses have large differences in astigmatism and poor resolution at different object distances.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide an optical lens, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially along the optical axis from the object side to the image side, wherein the optical centers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are located on the same straight line;

[0006] Wherein, the first lens, the second lens, the fourth lens, and the fifth lens are spherical mirrors, and the third lens, the sixth lens, and the seventh lens are cylindrical mirrors;

[0007] The first lens, the third lens, the fifth lens, and the seventh lens are lenses with negative optical power, while the second lens, the fourth lens, and the sixth lens are lenses with positive optical power.

[0008] Secondly, embodiments of this application also provide an optical module, including the optical lens described above.

[0009] Thirdly, embodiments of this application also provide an electronic device, including the optical module described above.

[0010] Thus, in the above-described scheme of this application, the optical lens is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially along the optical axis from the object side to the image side. The first lens, the second lens, the fourth lens, and the fifth lens are spherical mirrors, and the third lens, the sixth lens, and the seventh lens are cylindrical mirrors. Furthermore, the first lens, the third lens, the fifth lens, and the seventh lens are negative optical power lenses, while the second lens, the fourth lens, and the sixth lens are positive optical power lenses. This optical lens, employing a combination of spherical and cylindrical mirrors, can focus through the spherical mirror and widen the image through the cylindrical mirror, allowing the optical lens to maintain the ratio of horizontal and vertical focal lengths. This enables the lens to have the function of widening and widescreen, and can also eliminate astigmatism differences at different object distances, thereby improving resolution. Attached Figure Description

[0011] Figure 1 A cross-sectional view of the optical lens in the Y direction according to an embodiment of this application;

[0012] Figure 2 A schematic diagram of the optical path in the Y-direction cross-section of an optical lens according to an embodiment of this application;

[0013] Figure 3 A cross-sectional schematic diagram in the X direction showing an embodiment of the optical lens of this application;

[0014] Figure 4 A schematic diagram of the optical path in the X-direction cross-section of an optical lens according to an embodiment of this application;

[0015] Figure 5 A schematic diagram illustrating the focusing function of the optical lens in an embodiment of this application;

[0016] Figure 6A This diagram illustrates the MTF (Mean Transformer Flow) of an optical lens according to an embodiment of this application at a first object distance.

[0017] Figure 6B This is a schematic diagram showing the MTF of the optical lens in an embodiment of this application at a second object distance;

[0018] Figure 6C This diagram illustrates the MTF of the optical lens in an embodiment of this application at a third object distance.

[0019] Figure 6D This is a schematic diagram showing the MTF of the optical lens in an embodiment of this application at a fourth object distance;

[0020] Figure 7 A schematic diagram illustrating the chromatic aberration effect of an optical lens according to an embodiment of this application;

[0021] Figure 8This is a schematic diagram showing the MTF of the optical lens in the first focal length according to an embodiment of this application;

[0022] Figure 9 This is a schematic diagram of the MTF of an optical lens in the second focal length according to an embodiment of this application. Detailed Implementation

[0023] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0024] like Figures 1 to 4 As shown, this application embodiment provides an optical lens 100, including: a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50, a sixth lens 60 and a seventh lens 70 arranged sequentially along the optical axis from the object side n1 to the image side n2, and the optical centers of the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60 and the seventh lens 70 are located on the same straight line;

[0025] Wherein, the first lens 10, the second lens 20, the fourth lens 40, and the fifth lens 50 are spherical mirrors, and the third lens 30, the sixth lens 60, and the seventh lens 70 are cylindrical mirrors; the first lens 10, the third lens 30, the fifth lens 50, and the seventh lens 70 are lenses with negative optical power, and the second lens 20, the fourth lens 40, and the sixth lens 60 are lenses with positive optical power.

[0026] For example, the optical axis refers to the straight line connecting the centers of curvature of the two refracting spherical surfaces of the lens; the optical center, also called the optical center, is a special point on the principal optical axis of the lens, through which the direction of light propagation does not change (or may only undergo a slight translation). The object side n1 refers to the side facing the object being photographed, or the incident light side; the image side n2 refers to the side facing the image (usually the side facing the image sensor in the optical lens 100), or the outgoing light side.

[0027] For example, a spherical mirror is an optical element whose reflecting or refracting surface is part of a sphere, and whose curvature is uniformly distributed in all directions. A cylindrical mirror is an aspherical optical element whose surface is at least part of a cylinder, and which has curvature and refractive power only in a single dimension, capable of focusing point light into a line of light. Thus, by incorporating one or more cylindrical mirrors into the optical lens 100, the optical lens 100 can be made to focus light in a certain direction (see...). Figure 1 and Figure 2 The image (shown in the Y direction) is widened, thus achieving a widescreen distortion effect.

[0028] For example, optical power is used to characterize the ability of an optical element to deflect light rays. A lens with positive optical power can bend light rays toward the optical axis and converge them into a real focal point; a lens with negative optical power can scatter light rays away from the optical axis and converge them into a virtual focal point on the backward extension.

[0029] In this embodiment, an optical lens 100 is formed by a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, a fifth lens 50, a sixth lens 60, and a seventh lens 70 arranged sequentially along the optical axis from the object side n1 to the image side n2. The first lens 10, the second lens 20, the fourth lens 40, and the fifth lens 50 are spherical mirrors, and the third lens 30, the sixth lens 60, and the seventh lens 70 are cylindrical mirrors. The first lens 10, the third lens 30, the fifth lens 50, and the seventh lens 70 are lenses with negative optical power, while the second lens 20, the fourth lens 40, and the sixth lens 60 are lenses with positive optical power. This optical lens 100, which uses a combination of spherical and cylindrical mirrors, can focus through the spherical mirror and widen the image through the cylindrical mirror, so that the optical lens 100 maintains the ratio of horizontal and vertical focal lengths, enabling the lens to have the function of widening and widescreen, and can eliminate astigmatism differences at different object distances, thereby improving resolution.

[0030] For example, both the X and Y directions are perpendicular to the optical axis Z. The third lens 30, the sixth lens 60, and the seventh lens 70 are cylindrical mirrors; such as... Figure 1 and Figure 2 As shown, the third lens 30, the sixth lens 60, and the seventh lens 70 have curvature in the Y direction; as Figure 3 and Figure 4 As shown, the third lens 30, the sixth lens 60, and the seventh lens 70 have zero curvature in the X direction.

[0031] Optionally, the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60, and the seventh lens 70 are all glass spherical lenses. In addition to glass lenses, the lenses in the optical lens 100 of this embodiment can also be made of other materials, such as resin, or a combination of glass and resin lenses. This embodiment is not limited to these methods.

[0032] Optionally, the first surface of the first lens 10 is bent towards the image side n2, and the second surface of the first lens 10 is also bent towards the image side n2. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object side surface, and the second surface can be called the image side surface. The first surface being bent towards the image side n2 can be considered a convex surface, and the second surface being bent towards the image side n2 can be considered a concave surface. That is, the object side surface of the first lens 10 is convex, and the image side surface of the first lens 10 is concave.

[0033] The first surface of the second lens 20 bends towards the image side n2, and the second surface of the second lens 20 bends towards the object side n1. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object side surface, and the second surface can be called the image side surface. The first surface bending towards the image side n2 can be considered a convex surface, and the second surface bending towards the object side n1 can be considered a convex surface. Therefore, both the object side and image side surfaces of the second lens 20 are convex.

[0034] The first surface of the third lens 30 bends towards the object side n1, and the second surface of the third lens 30 bends towards the image side n2. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object-side surface, and the second surface can be called the image-side surface. The first surface bending towards the object side n1 can be considered concave, and the second surface bending towards the image side n2 can be considered concave. Therefore, both the object-side and image-side surfaces of the third lens 30 are concave.

[0035] The first surface of the fourth lens 40 bends towards the image side n2, and the second surface of the fourth lens 40 bends towards the object side n1. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object side surface, and the second surface can be called the image side surface. The first surface bending towards the image side n2 can be considered a convex surface, and the second surface bending towards the object side n1 can be considered a convex surface. Therefore, both the object side and image side surfaces of the fourth lens 40 are convex.

[0036] The first surface of the fifth lens 50 is curved towards the object side n1, and the second surface of the fifth lens 50 is curved towards the image side n2. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object-side surface, and the second surface can be called the image-side surface. The first surface being curved towards the object side n1 can be considered concave, and the second surface being curved towards the image side n2 can be considered concave. Therefore, both the object-side and image-side surfaces of the fifth lens 50 are concave.

[0037] The first surface of the sixth lens 60 bends towards the image side n2, and the second surface of the sixth lens 60 bends towards the object side n1. The first and second surfaces are arranged opposite to each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object side surface, and the second surface can be called the image side surface. The first surface bending towards the image side n2 can be considered a convex surface, and the second surface bending towards the object side n1 can be considered a convex surface. Therefore, both the object side and image side surfaces of the sixth lens 60 are convex.

[0038] The first surface of the seventh lens 70 bends towards the object side n1, and the second surface of the seventh lens 70 bends towards the image side n2. The first and second surfaces are positioned opposite each other; the first surface faces the object side n1, and the second surface faces the image side n2. In other words, the first surface faces the object side n1, and the second surface faces the image side n2. Thus, the first surface can be called the object-side surface, and the second surface can be called the image-side surface. The first surface bending towards the object side n1 can be considered concave, and the second surface bending towards the image side n2 can be considered concave. Therefore, both the object-side and image-side surfaces of the seventh lens 70 are concave.

[0039] For example, the image-side surface is the surface facing the imaging side, such as the side facing the image sensor in the optical lens 100, or it can also be referred to as the surface of the medium where the emitted light is located. The object-side surface is the surface facing the side of the object being photographed, or it can also be referred to as the surface of the medium where the incident light is located.

[0040] Optionally, the image-side surface of the fourth lens 40 and the object-side surface of the fifth lens 50 are attached together.

[0041] For example, the bonding may refer to matching the optical parameters of the image-side surface (i.e., the second surface, the surface facing the image side n2) of the fourth lens 40 with the object-side surface (i.e., the first surface, the surface facing the object side n1) of the fifth lens 50, so that the image-side surface of the fourth lens 40 and the object-side surface of the fifth lens 50 are bonded together to form a single lens. Optionally, the fourth lens 40 and the fifth lens 50 can be cemented together. For example, the image-side surface of the fourth lens 40 and the object-side surface of the fifth lens 50 can be precision polished and then seamlessly bonded and cured using a high-transmittance optical adhesive to form a single optical element.

[0042] In this embodiment, by setting the image side of the fourth lens 40 and the object side of the fifth lens 50 to be bonded together to form a single optical element, the chromatic aberration of the image formed by the optical lens 100 can be reduced.

[0043] Optionally, the image-side surface of the sixth lens 60 and the object-side surface of the seventh lens 70 are attached together.

[0044] For example, the bonding may refer to matching the optical parameters of the image-side surface (i.e., the second surface, the surface facing the image side n2) of the sixth lens 60 with the object-side surface (i.e., the first surface, the surface facing the object side n1) of the seventh lens 70, so that the image-side surface of the sixth lens 60 and the object-side surface of the seventh lens 70 are bonded together to form a single lens. Optionally, the sixth lens 60 and the seventh lens 70 can be cemented together. For example, the image-side surface of the sixth lens 60 and the object-side surface of the seventh lens 70 can be precision polished and then seamlessly bonded and cured with high-transmittance optical adhesive to form a single optical element.

[0045] In this embodiment, by setting the image side of the sixth lens 60 and the object side of the seventh lens 70 to be bonded together to form a single optical element, the chromatic aberration of the image formed by the optical lens 100 can be reduced.

[0046] Optionally, the refractive index of the lens in the optical lens 100 satisfies the following relationship: ; ; ; ; ; ; ;

[0047] in, The refractive index of the first lens 10 is... The refractive index of the second lens 20 is... The refractive index of the third lens 30 is... The refractive index of the fourth lens 40 is... The refractive index of the fifth lens 50 is... The refractive index of the sixth lens 60 is... The refractive index of the seventh lens 70 is given.

[0048] Optionally, the Abbe number of the lenses in the optical lens 100 satisfies the following relationship: ; ; ; ; ; ; ;

[0049] in, The Abbe number of the first lens 10. The Abbe number of the second lens 20. The Abbe number of the third lens 30. The Abbe number of the fourth lens 40, The Abbe number of the fifth lens 50. The Abbe number of the sixth lens 60, It is the Abbe number of the seventh lens 70.

[0050] In this embodiment, the first lens 10 has the characteristics of high refractive index and low dispersion; the second lens 20 has the characteristics of medium refractive index and low dispersion; the third lens 30 has the characteristics of low refractive index and low dispersion; the fourth lens 40 has the characteristics of high refractive index and high dispersion, and when matched with the first lens 10, it can effectively correct chromatic aberration; the fifth lens 50 has the characteristics of medium refractive index and high dispersion, and when matched with the second lens 20, it can effectively correct chromatic aberration; the sixth lens 60 has the characteristics of high refractive index and medium dispersion, and has a high degree of design freedom; the seventh lens 70 has the characteristics of low refractive index and low dispersion, and has high light transmittance, and is used for field curvature correction at the end of the lens.

[0051] Optionally, the focal lengths of the lenses in the optical lens 100 satisfy the following relationship: ; ; ; ;

[0052] in, The focal length of the first lens 10 is... The focal length of the second lens 20 The focal length of the third lens 30 The focal length of the combination of the fourth lens 40 and the fifth lens 50. The focal length of the combination of the sixth lens 60 and the seventh lens 70. The focal length of the optical lens 100 is given.

[0053] For example, the combined focal length of the fourth lens 40 and the fifth lens 50 refers to the focal length of the image-side surface of the fourth lens 40 and the object-side surface of the fifth lens 50 when they are bonded together to form a single optical element; the combined focal length of the sixth lens 60 and the seventh lens 70 refers to the focal length of the image-side surface of the sixth lens 60 and the object-side surface of the seventh lens 70 when they are bonded together to form a single optical element; the focal length of the optical lens 100 refers to the overall focal length of the optical lens 100 formed by the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, the sixth lens 60 and the seventh lens 70 arranged sequentially along the optical axis from the object side n1 to the image side n2.

[0054] In this embodiment, by designing the focal length of the lens in the optical lens 100, it can be applied to camera modules with focal lengths of 24mm and 35mm. When shooting with camera modules with focal lengths of 24mm and 35mm, it has better chromatic aberration and resolution. Therefore, the optical lens 100 can be adapted to different electronic devices and can be used as an external lens with high applicability.

[0055] Optionally, the first lens 10 is movable along the optical axis direction Z.

[0056] In this embodiment, by setting the first lens 10 to be movable along the optical axis direction Z, that is, the first lens 10 has a focusing function, such as... Figure 5 As shown, state A represents the state where the optical lens 100 has the longest focal length, that is, the first lens 10 is farthest from the image side n2; state B represents the state where the optical lens 100 has the shortest focal length, that is, the first lens 10 is closest to the image side n2. By adjusting the position of the first lens 10 on the optical axis, it can be adapted to camera modules with focal lengths of 24mm and 35mm for shooting. Furthermore, one or more cylindrical mirrors can be placed in the optical lens 100 to adjust the optical lens 100 in a certain direction (e.g., ...). Figure 1 and Figure 2 While the image (shown in the Y direction) is widened, the position of the first lens 10 on the optical axis is adjusted so that the optical lens 100 maintains the ratio of horizontal and vertical focal lengths. This achieves a widescreen distortion effect while eliminating astigmatism differences at different object distances and improving resolution.

[0057] It should be noted that in this embodiment, the first lens 10 can be manually adjusted to move along the optical axis Z, or it can be automatically adjusted to move along the optical axis Z. This embodiment is not limited to this. Optionally, the corresponding setting of the first lens 10 can be adjusted according to different object distances to achieve manual focusing from near object distance to infinity; or different finite settings can be set according to the far, medium, and near object distances to achieve automatic focusing; or different settings can be selected according to the object distance, and then the focusing function can be achieved through the automatic focusing function (AutoFocus, AF) of the electronic device, etc. This embodiment is not limited to this.

[0058] In this embodiment, the optical lens 100 can be fixedly mounted on an electronic device, or it can be used as an external lens for the electronic device. For example, if the optical lens 100 is fixedly mounted on the electronic device, it can use the AF function of the electronic device to achieve autofocus, adapting to the focusing mode requirements of different shooting modes. Alternatively, when the optical lens 100 is used as an external lens for the electronic device, it can use manual focusing to adapt to the focusing mode requirements of different shooting modes, or it can use the AF function of the electronic device to achieve autofocus, adapting to the focusing mode requirements of different shooting modes, etc. This embodiment is not limited to these limitations.

[0059] The optical lens 100 in this embodiment can change the lens focal length within a certain range while maintaining the horizontal or vertical focal length ratio, so that the lens can simultaneously have the functions of widening and extending (or widening).

[0060] The optical lens 100 of this application will be described below with reference to specific embodiments:

[0061] Table 1 provides examples of lens surface design coefficients.

[0062] Table 1

[0063]

[0064] Wherein, S1 represents the first surface (object side) of the first lens 10, S2 represents the second surface (image side) of the first lens 10; S3 represents the first surface (object side) of the second lens 20, S4 represents the second surface (image side) of the second lens 20; S5 represents the first surface (object side) of the third lens 30, S6 represents the second surface (image side) of the third lens 30; S7 represents the first surface (object side) of the fourth lens 40, S8 represents the second surface (image side) of the fourth lens 40 and the first surface (object side) of the fifth lens 50, S9 represents the second surface (image side) of the fifth lens 50; S10 represents the first surface (object side) of the sixth lens 60, S11 represents the second surface (image side) of the sixth lens 60 and the first surface (object side) of the seventh lens 70, S12 represents the second surface (image side) of the seventh lens 70.

[0065] like Figures 6A to 6D As shown, a schematic diagram of MTF at different object distances is presented, where Figure 6A A schematic diagram of the MTF corresponding to the first object distance (e.g., 0.8m) at a spatial frequency of 110 lp / mm. Figure 6B A schematic diagram of the MTF corresponding to the second object distance (e.g., 1m) at a spatial frequency of 110 lp / mm. Figure 6C A schematic diagram of the MTF corresponding to the third object distance (e.g., 3m) at a spatial frequency of 110 lp / mm. Figure 6D A schematic diagram of the MTF corresponding to the fourth object distance (e.g., infinity) at a spatial frequency of 110 lp / mm. Figures 6A to 6D In the diagram, the higher the overlap of the curves and the higher the peak, the better the focusing effect. It can be seen that the optical lens 100, at a spatial frequency of 110 lp / mm, has an MTF greater than 0.5 for most of its field of view, exhibiting high resolution. Furthermore, by adjusting the focusing of the first lens 10, it can achieve continuous sharp focusing from a near object distance of 0.8m to infinity, with excellent results. Figure 7 As shown, the closer the curves converge to the center, the better the chromatic aberration performance. Therefore, the optical lens 100 exhibits good chromatic aberration performance.

[0066] like Figure 8 As shown, a schematic diagram of the MTF (Mean Transmission Format) of the optical lens 100 when used with a camera module with a focal length of 24mm is presented; as... Figure 9 The diagram shows the MTF (Mean Transformation Factor) of the optical lens 100 when used with a camera module with a focal length of 35mm. It can be seen that the optical lens 100 exhibits excellent optical performance when used with camera modules with focal lengths of 24mm and 35mm, meaning that the optical lens 100 of this application has high adaptability.

[0067] The optical lens 100 in this embodiment employs a spherical and cylindrical lens structure. By adjusting the spacing of the front spherical lens group, focusing is achieved from near object distance to infinity, ensuring clear image quality and eliminating the defects of different astigmatism and large differences in resolution at different object distances, thus increasing the range of shooting scenarios. Furthermore, the optical lens 100 in this embodiment has high adaptability and can be used with 24mm, 35mm, periscope telephoto, and other camera modules, and exhibits good optical performance.

[0068] This application provides an optical module, including the optical lens 100 as described above.

[0069] It should be noted that the optical module in this application embodiment can realize various embodiments of the optical lens 100 described above and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0070] This application provides an electronic device including the optical module described above.

[0071] It should be noted that the electronic devices in the embodiments of this application can implement various embodiments of the optical lens 100 described above and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0074] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0075] The above describes the preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles described in this application, and these improvements and modifications are also within the protection scope of this application.

Claims

1. An optical lens, characterized in that, include: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens are arranged sequentially along the optical axis from the object side to the image side, and the optical centers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are located on the same straight line; Wherein, the first lens, the second lens, the fourth lens, and the fifth lens are spherical mirrors, and the third lens, the sixth lens, and the seventh lens are cylindrical mirrors; The first lens, the third lens, the fifth lens, and the seventh lens are lenses with negative optical power, while the second lens, the fourth lens, and the sixth lens are lenses with positive optical power.

2. The optical lens according to claim 1, characterized in that, The first surface of the first lens is bent toward the image side, and the second surface of the first lens is bent toward the image side; The first surface of the second lens is bent toward the image side, and the second surface of the second lens is bent toward the object side; The first surface of the third lens is bent toward the object side, and the second surface of the third lens is bent toward the image side; The first surface of the fourth lens is bent toward the image side, and the second surface of the fourth lens is bent toward the object side; The first surface of the fifth lens is bent toward the object side, and the second surface of the fifth lens is bent toward the image side; The first surface of the sixth lens is bent toward the image side, and the second surface of the sixth lens is bent toward the object side; The first surface of the seventh lens is bent toward the object side, and the second surface of the seventh lens is bent toward the image side; The first surface is the surface facing the object side, and the second surface is the surface facing the image side.

3. The optical lens according to claim 1 or 2, characterized in that, The image-side surface of the fourth lens and the object-side surface of the fifth lens are attached to each other.

4. The optical lens according to claim 1 or 2, characterized in that, The image-side surface of the sixth lens and the object-side surface of the seventh lens are attached to each other.

5. The optical lens according to claim 1, characterized in that, The refractive index of the lens in the optical lens satisfies the following relationship: ； ； ； ； ； ； ； in, Let be the refractive index of the first lens. Let be the refractive index of the second lens. The refractive index of the third lens is... The refractive index of the fourth lens is... The refractive index of the fifth lens is... The refractive index of the sixth lens is... is the refractive index of the seventh lens.

6. The optical lens according to claim 1, characterized in that, The Abbe number of the lens in the optical lens satisfies the following relationship: ； ； ； ； ； ； ； in, The Abbe number of the first lens. The Abbe number of the second lens. The Abbe number of the third lens. The Abbe number of the fourth lens. The Abbe number of the fifth lens. The Abbe number of the sixth lens. Let be the Abbe number of the seventh lens.

7. The optical lens according to claim 1, characterized in that, The focal lengths of the lenses in the optical lens satisfy the following relationship: ； ； ； ； in, Let be the focal length of the first lens. Let be the focal length of the second lens. The focal length of the third lens is... The focal length of the combination of the fourth lens and the fifth lens. The focal length of the combination of the sixth and seventh lenses is [missing information]. The focal length of the optical lens is given.

8. The optical lens according to claim 1, characterized in that, The first lens is movable along the optical axis.

9. An optical module, characterized in that, Includes an optical lens as described in any one of claims 1 to 8.

10. An electronic device, characterized in that, Includes the optical module as described in claim 9.

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