Optical lens, lens module, and electronic device

Abstract

Embodiments of the present application provide an optical lens, a lens module, and an electronic device, aiming to solve the technical problem of bulky electronic devices caused by large optical lenses. The optical axis of a first lens group is parallel to the optical axis of a second lens group. The optical axis of a third lens group coincides with the optical axis of a fourth lens group. When the optical lens is in a first focal length range, the first lens group, a first reflective element, the third lens group, and the fourth lens group are sequentially arranged along the optical axis. In a zooming process in which the optical lens is switched from the first focal length range to a second focal length range, the first reflective element moves in a direction away from a second lens along a third optical axis. When the optical lens is in the second focal length range, the second lens group, the first reflective element, the third lens group, and the fourth lens group are sequentially arranged along the optical axis. When the optical lens is in the first focal length range or the second focal length range, at least two lens groups in a first lens and the second lens are configured to move along the optical axis.

Description

Optical lens, lens module and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410800202.8, filed on June 19, 2024, and entitled "Optical lens, lens module and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the technical field of image acquisition devices, in particular to an optical lens, a lens module and an electronic device. BACKGROUND

[0003] In recent years, with the development of optical imaging technology, people's requirements for the camera function of portable electronic devices are also increasingly high. The performance parameters such as target surface, depth of field and resolution of mobile phone lenses that affect the imaging quality need to be further improved. At the same time, due to the influence of the thinning development trend of mobile phones and the demand of folding machine applications, the size of mobile phone lenses has become an important reason to constrain the overall thickness of mobile phones. However, the zoom lens size in the related art is large, which is not conducive to the thinning of electronic devices. SUMMARY

[0004] Embodiments of the present application provide an optical lens, a lens module and an electronic device, which can make the size of the optical lens more compact.

[0005] In a first aspect, an optical lens is provided, comprising: a first lens, a first reflecting element, and a second lens.

[0006] The first lens comprises a first lens group and a second lens group, the optical power of the first lens group and the optical power of the second lens group are both positive, the optical axis of the first lens group is a first optical axis, the optical axis of the second lens group is a second optical axis, and the first optical axis is parallel to the second optical axis. The second lens comprises a third lens group and a fourth lens group, the optical axis of the third lens group and the fourth lens group is a third optical axis, and the first optical axis and the second optical axis are perpendicular to the third optical axis, respectively.

[0007] When the optical lens is in a first focal segment, along the first optical axis and the third optical axis and from the object side to the image side, the first lens group, the first reflecting element, the third lens group and the fourth lens group are arranged in sequence, the first reflecting element is configured to bend the light path from the first lens group towards the third lens group and the fourth lens group, and at least two lens groups in the first lens and the second lens are configured to move along the optical axis. Through the above arrangement, the optical lens can clearly image when shooting in the first focal segment.

[0008] In the zooming process of the optical lens from the first focal segment to the second focal segment, the first reflecting element moves along the third optical axis in a direction away from the second lens.

[0009] When the optical lens is in the second focal segment, the second lens group, the first reflective element, the third lens group and the fourth lens group are arranged in sequence along the second optical axis and the third optical axis and from the object side to the image side, the second reflective element is configured to bend the light path from the second lens group towards the third lens group and the fourth lens group, and at least two lens groups in the first lens and the second lens are configured to move along the optical axis. Through the above arrangement, the optical lens can clearly image when shooting in the second focal segment.

[0010] In summary, since at least two lens groups in the first lens and the second lens can move along the optical axis, the degree of freedom of the optical lens can be increased, and under the condition that the maximum image height of the optical sensor is the same (under the same target surface), the size of the optical lens can be more compact, thereby facilitating the thinning of the electronic device. Or, under the limited size, the maximum image height of the optical sensor is increased (large target surface is realized).

[0011] In some possible implementation manners, when the optical lens is in the first focal segment, the effective focal length of the optical lens is EFL1, and the ratio of the focal length f1 of the first lens group to EFL1 satisfies 0.2 < f1 / EFL1 < 5. By reasonably allocating the optical power of the first lens group, the first lens group has a larger refractive power, which is beneficial to increase the aperture of the optical lens and realize high-quality imaging of the optical lens in the first focal segment.

[0012] In some possible implementation manners, when the optical lens is in the second focal segment, the effective focal length of the optical lens is EFL2, and the ratio of the focal length f2 of the second lens group to EFL2 satisfies 0.2 < f2 / EFL2 < 5. By reasonably allocating the optical power of the second lens group, the second lens group has a larger refractive power, which is beneficial to increase the aperture of the optical lens and realize high-quality imaging of the optical lens in the second focal segment. In some possible implementation manners, the first focal segment includes a macro state, and when the optical lens is in the macro state, the magnification of the optical lens is in the range of 0.1-0.5. The optical lens has a high magnification, which can better meet the demand for shooting a macro scene and further improve the imaging quality and effect of the optical lens in shooting a macro scene.

[0013] In some possible implementation manners, the optical power of the third lens group is positive, and the optical power of the fourth lens group is negative. In this way, after the light is converged by the first lens, the light is irradiated on the optical sensor through the combination of the third lens group and the fourth lens group, which can correct chromatic aberration and aberration, thereby improving the imaging quality of the optical lens.

[0014] In some possible implementation manners, the second lens further includes a fifth lens group, the fifth lens group is located between the third lens group and the fourth lens group, and the third optical axis is an optical axis of the fifth lens group. When the optical lens is in the first focal segment, the first lens group, the first reflecting element, the third lens group, the fifth lens group, and the fourth lens group are sequentially arranged along the first optical axis and the third optical axis and from the object side to the image side. Through the above arrangement, the optical lens can clearly image when shooting in the first focal segment. When the optical lens is in the second focal segment, the second lens group, the first reflecting element, the third lens group, the fifth lens group, and the fourth lens group are sequentially arranged along the second optical axis and the third optical axis and from the object side to the image side. Through the above arrangement, the optical lens can clearly image when shooting in the second focal segment.

[0015] In some possible implementation manners, the third lens group has positive optical power, the fourth lens group has negative optical power, and the fifth lens group has positive optical power. In this way, after light converges through the first lens, the light converges through the combination of the third lens group, the fifth lens group, and the fourth lens group, and irradiates on the optical sensor, chromatic aberration and aberration can be corrected, and the imaging quality of the optical lens is improved.

[0016] In some possible implementation manners, the number of the fifth lens group is multiple. By further increasing the number of the fifth lens group, the degree of freedom of the optical lens can be further increased, and in the case of the same maximum image height of the optical sensor (under the same target surface), the size of the optical lens can be further reduced. Alternatively, in the case of a limited size, the maximum image height of the optical sensor can be further increased (to realize a large target surface).

[0017] In some possible implementation manners, the distance between the lens group of the first lens and the first reflecting element when the optical lens is in the non-working state is less than the distance between the lens group of the first lens and the first reflecting element when the optical lens is in the working state, and the lens group of the first lens moves along the first optical axis in the process of switching the optical lens from the non-working state to the working state. When the optical lens is in the working state, the first lens group or the second lens group can protrude out of the shell of the electronic device to realize the shooting operation, and when the optical lens is in the non-working state, the first lens group or the second lens group can be located in the shell of the electronic device, which is beneficial to improve the sealing performance of the lens module, thereby realizing dustproof and light shielding.

[0018] In some possible implementation manners, the third lens group has positive optical power, the distance between the third lens group and the first reflective element is less than the distance between the first reflective element and the optical sensor when the optical lens is in the first focal length range, and the distance between the third lens group and the first reflective element when the optical lens is in the second focal length range; the fourth lens group has negative optical power, the distance between the fourth lens group and the optical sensor is less than or equal to the distance between the first reflective element and the optical sensor when the optical lens is in the first focal length range, and the distance between the fourth lens group and the optical sensor when the optical lens is in the second focal length range; and the optical sensor is located on the image side of the fourth lens group. Through the above arrangement, the optical lens can clearly image when shooting in the first focal length range and the second focal length range.

[0019] In some possible implementation manners, when the optical lens is in the first focal length range, the first lens group is configured to move towards the object side along the first optical axis, and at least one lens group in the second lens is configured to move along the third optical axis; or, the first lens group is configured to be fixed, and at least two lens groups in the second lens are configured to move along the third optical axis. Through the above arrangement, the optical lens can clearly image when shooting in the first focal length range.

[0020] In some possible implementation manners, the first focal length range includes a macro state and a medium-long focal length state, and the third lens group moves towards the object side along the third optical axis in the process of switching the optical lens from the medium-long focal length state to the macro state. Through the above arrangement, the optical lens can clearly image when shooting a macro scene.

[0021] In some possible implementation manners, in the process of switching the optical lens from the medium-long focal length state to the macro state, the first lens group is fixed, and the fourth lens group moves towards the object side along the third optical axis; or, the first lens group moves towards the object side along the first optical axis, and the fourth lens group moves towards the image side along the third optical axis. Through the above arrangement, the optical lens can clearly image when shooting a macro scene.

[0022] In some possible implementation manners, the second lens further includes a fifth lens group; in the process of switching the optical lens from the medium-long focal length state to the macro state, the first lens group is fixed; the fourth lens group moves towards the object side along the third optical axis, or the fourth lens group is fixed; the fifth lens group moves towards the object side along the third optical axis, or the fifth lens group moves towards the image side along the third optical axis. Through the above arrangement, the optical lens can clearly image when shooting a macro scene.

[0023] In some possible implementation manners, when the optical lens is in the second focal length range, the second lens group is configured to move towards the object side along the second optical axis, and at least one lens group in the second lens is configured to move along the third optical axis; or, the second lens group is configured to be fixed, and at least two lens groups in the second lens are configured to move along the third optical axis. Through the above arrangement, the optical lens can clearly image when shooting in the second focal length range.

[0024] In some possible implementation manners, the first focal length section includes a macro state and a medium telephoto state, the second focal length section includes a super telephoto state, and in a process of switching from the medium telephoto state to the super telephoto state, the second lens group moves along the second optical axis to the object side, the third lens group moves along the third optical axis to the image side, and the fourth lens group is fixed. Through the above arrangement, the optical lens can clearly image when shooting in the second focal length section.

[0025] In some possible implementation manners, in a process of switching from the medium telephoto state to the super telephoto state, the second lens group is fixed, the third lens group moves along the third optical axis to the object side, and the fourth lens group moves along the third optical axis to the object side. Through the above arrangement, the optical lens can clearly image when shooting in the second focal length section.

[0026] In some possible implementation manners, the second lens further includes a fifth lens group, and in a process of switching from the medium telephoto state to the super telephoto state, the fifth lens group moves along the third optical axis to the object side. Through the above arrangement, the optical lens can clearly image when shooting in the second focal length section.

[0027] In some possible implementation manners, the optical lens further includes a second reflective element, the second reflective element is located on the image side of the fourth lens group, the second reflective element has at least one reflecting surface, and the second reflective element is configured to reflect, by at least one time, a light path from the fourth lens group to the image side of the second reflective element. Through the above arrangement, the second reflective element can fold the light path from the fourth lens group for multiple times, which is beneficial to further reducing the size of the optical lens.

[0028] In a second aspect, an embodiment of the present application provides a lens module, including an optical sensor and the optical lens in the above embodiments. The optical sensor is located on the image side of the lens module, the optical lens is configured to project an image onto the optical sensor, and the optical sensor is configured to convert the image into digital image data.

[0029] The lens module provided by the embodiment of the present application includes the optical lens in the above embodiments, and thus can achieve the same technical effects and solve the same technical problems.

[0030] In a third aspect, an embodiment of the present application provides an electronic device, including a shell and the lens module in the above embodiments. The lens module is arranged on the shell.

[0031] The electronic device provided by the embodiment of the present application includes the lens module in the above embodiments, and thus can achieve the same technical effects and solve the same technical problems. BRIEF DESCRIPTION OF DRAWINGS

[0032] FIG. 1 is an exploded view of an electronic device according to an embodiment of the present application;

[0033] FIG. 2 is a structural diagram of a lens module according to an embodiment of the present application;

[0034] FIG. 3 is a structural diagram of an optical lens according to an embodiment of the present application;

[0035] FIG. 4 is a structural diagram of another optical lens according to an embodiment of the present application;

[0036] FIG. 5a is a structural diagram of another optical lens according to an embodiment of the present application;

[0037] FIG. 5b is a structural diagram of another optical lens according to an embodiment of the present application;

[0038] FIG. 6 is a structural diagram of another optical lens according to an embodiment of the present application;

[0039] FIG. 7a is a structural diagram of an optical lens according to an embodiment of the present application, which switches between a non-working state and a working state at a first focal length;

[0040] FIG. 7b is a structural diagram of an optical lens according to an embodiment of the present application, which switches between a non-working state and a working state at a second focal length;

[0041] FIG. 8 is a simulation structural diagram of an optical lens according to an embodiment of the present application, which is in a medium-long focal length state;

[0042] FIG. 9 is a simulation structural diagram of an optical lens according to an embodiment of the present application, which is in a macro state;

[0043] FIG. 10 is a simulation structural diagram of an optical lens according to an embodiment of the present application, which is in an ultra-long focal length state;

[0044] FIG. 11 is a modulation transfer function curve of an optical lens according to an embodiment of the present application, which is in a medium-long focal length state;

[0045] FIG. 12 is a modulation transfer function curve of an optical lens according to an embodiment of the present application, which is in a macro state;

[0046] FIG. 13 is a modulation transfer function curve of an optical lens according to an embodiment of the present application, which is in an ultra-long focal length state;

[0047] FIG. 14 is a simulation structural diagram of an optical lens according to an embodiment of the present application, which is in a medium-long focal length state;

[0048] FIG. 15 is a simulation structural diagram of an optical lens according to an embodiment of the present application, which is in a macro state;

[0049] FIG. 16 is a simulation structure diagram of the optical lens in an ultra-long focus state according to the second embodiment of the present application;

[0050] FIG. 17 is a modulation transfer function curve diagram of the optical lens in a medium-long focus state according to the second embodiment of the present application;

[0051] FIG. 18 is a modulation transfer function curve diagram of the optical lens in a macro state according to the second embodiment of the present application;

[0052] FIG. 19 is a modulation transfer function curve diagram of the optical lens in an ultra-long focus state according to the second embodiment of the present application;

[0053] FIG. 20 is a simulation structure diagram of the optical lens in a medium-long focus state according to the third embodiment of the present application;

[0054] FIG. 21 is a simulation structure diagram of the optical lens in a macro state according to the third embodiment of the present application;

[0055] FIG. 22 is a simulation structure diagram of the optical lens in an ultra-long focus state according to the third embodiment of the present application;

[0056] FIG. 23 is a modulation transfer function curve diagram of the optical lens in a medium-long focus state according to the third embodiment of the present application;

[0057] FIG. 24 is a modulation transfer function curve diagram of the optical lens in a macro state according to the third embodiment of the present application;

[0058] FIG. 25 is a modulation transfer function curve diagram of the optical lens in an ultra-long focus state according to the third embodiment of the present application;

[0059] FIG. 26 is a simulation structure diagram of the optical lens in a medium-long focus state according to the fourth embodiment of the present application;

[0060] FIG. 27 is a simulation structure diagram of the optical lens in a macro state according to the fourth embodiment of the present application;

[0061] FIG. 28 is a simulation structure diagram of the optical lens in an ultra-long focus state according to the fourth embodiment of the present application;

[0062] FIG. 29 is a modulation transfer function curve diagram of the optical lens in a medium-long focus state according to the fourth embodiment of the present application;

[0063] FIG. 30 is a modulation transfer function curve diagram of the optical lens in a macro state according to the fourth embodiment of the present application;

[0064] FIG. 31 is a modulation transfer function curve diagram of the optical lens in an ultra-long focus state according to the fourth embodiment of the present application;

[0065] FIG. 32 is a simulation structure diagram of an optical lens in a medium-long focus state according to the fifth embodiment of the present application;

[0066] FIG. 33 is a simulation structure diagram of an optical lens in a macro state according to the fifth embodiment of the present application;

[0067] FIG. 34 is a simulation structure diagram of an optical lens in an ultra-long focus state according to the fifth embodiment of the present application;

[0068] FIG. 35 is a modulation transfer function curve diagram of an optical lens in a medium-long focus state according to the fifth embodiment of the present application;

[0069] FIG. 36 is a modulation transfer function curve diagram of an optical lens in a macro state according to the fifth embodiment of the present application;

[0070] FIG. 37 is a modulation transfer function curve diagram of an optical lens in an ultra-long focus state according to the fifth embodiment of the present application;

[0071] FIG. 38 is a simulation structure diagram of an optical lens in a medium-long focus state according to the sixth embodiment of the present application;

[0072] FIG. 39 is a simulation structure diagram of an optical lens in a macro state according to the sixth embodiment of the present application;

[0073] FIG. 40 is a simulation structure diagram of an optical lens in an ultra-long focus state according to the sixth embodiment of the present application;

[0074] FIG. 41 is a modulation transfer function curve diagram of an optical lens in a medium-long focus state according to the sixth embodiment of the present application;

[0075] FIG. 42 is a modulation transfer function curve diagram of an optical lens in a macro state according to the sixth embodiment of the present application;

[0076] FIG. 43 is a modulation transfer function curve diagram of an optical lens in an ultra-long focus state according to the sixth embodiment of the present application;

[0077] FIG. 44 is a simulation structure diagram of an optical lens in a medium-long focus state according to the seventh embodiment of the present application;

[0078] FIG. 45 is a simulation structure diagram of an optical lens in a macro state according to the seventh embodiment of the present application;

[0079] FIG. 46 is a simulation structure diagram of an optical lens in an ultra-long focus state according to the seventh embodiment of the present application;

[0080] FIG. 47 is a modulation transfer function curve diagram of an optical lens in a medium-long focus state according to the seventh embodiment of the present application;

[0081] FIG. 48 is a modulation transfer function curve diagram of the optical lens in a macro state according to an embodiment of the present application;

[0082] FIG. 49 is a modulation transfer function curve diagram of the optical lens in an ultra-tele state according to an embodiment of the present application;

[0083] FIG. 50 is a simulation structure diagram of the optical lens in a medium-tele state according to an embodiment of the present application;

[0084] FIG. 51 is a simulation structure diagram of the optical lens in a macro state according to an embodiment of the present application;

[0085] FIG. 52 is a simulation structure diagram of the optical lens in an ultra-tele state according to an embodiment of the present application;

[0086] FIG. 53 is a modulation transfer function curve diagram of the optical lens in a medium-tele state according to an embodiment of the present application;

[0087] FIG. 54 is a modulation transfer function curve diagram of the optical lens in a macro state according to an embodiment of the present application;

[0088] FIG. 55 is a modulation transfer function curve diagram of the optical lens in an ultra-tele state according to an embodiment of the present application. DETAILED DESCRIPTION

[0089] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application.

[0090] Hereinafter, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0091] In addition, in the embodiments of the present application, the orientation terms "up", "down", "left", "right", "horizontal", and "vertical" are defined with respect to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0092] In the embodiments of the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, electrical connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium.

[0093] The following briefly describes the concepts involved in the embodiments described below.

[0094] Stop: including aperture stop and field stop, wherein the aperture stop can limit the width of the imaging light beam, determine the size of the entrance pupil diameter and the solid angle of the light beam, and affect the amount of light entering the optical system. The field stop limits the field of view of the object space that can be imaged by the optical system.

[0095] F-number (Fno): the ratio of the total focal length of the lens to the entrance pupil diameter. The smaller the F-number, the more light passing through the aperture in the same unit of time. The larger the F-number, the less light passing through the aperture in the same unit of time.

[0096] Curvature radius: curvature is a value used to represent the degree of curvature of a curve at a certain point. The greater the curvature, the greater the degree of curvature of the curve, and the reciprocal of the curvature is the curvature radius.

[0097] Effective focal length (EFL): the distance from the principal plane of the optical system to the corresponding focal point.

[0098] Half of image height: refers to half of the full image height of the image formed by the optical lens, which is the maximum radius of the imaging circle. ImgH (Image Hight, IMH) represents half of the diagonal length of the effective pixel area on the photosensitive chip, that is, the image height of the imaging surface.

[0099] Modulation transfer function (MTF): a measure of the quality of system imaging.

[0100] Target surface: the imaging area on the optical sensor. The larger the target surface, the more conducive to improving the brightness and resolution of the imaging.

[0101] Infinity: refers to when the object distance exceeds a certain amount, the object being photographed can be considered from an infinite point of light, in the form of parallel light beams into the optical lens. When the optical lens is in the infinity state (∞), it means that the optical lens can clearly image the infinite scene when focusing on "∞".

[0102] Macro: refers to shooting at a large magnification at a close distance, which can capture images that are the same size or smaller than the actual object. In macro state, the optical lens has a magnification of one or more, and the close-up distance is close. The focal length of the optical lens in the macro state can be smaller than the focal length of the optical lens in the infinity state, with higher resolution, so that the object is shot more clearly.

[0103] Object side, with the optical lens as the boundary, the side where the object is located is the object side, and the side of the lens or optical element facing the object side is the object side surface.

[0104] Image side, with the optical lens as the boundary, the side where the image of the object is located is the image side, and the side of the lens or optical element facing the image side is the image side surface.

[0105] Object side surface: the surface of the lens closest to the real object is the object side surface.

[0106] Image side surface: the surface of the lens closest to the imaging surface is the image side surface.

[0107] Focal power: equal to the difference between the convergence degree of the image-side light bundle and the convergence degree of the object-side light bundle, which represents the refractive power of the optical system to the incident parallel light bundle. The focal power is generally represented by φ, the larger the value of φ, the more the parallel light bundle is folded. When φ>0, the refraction is convergent; when φ<0, the refraction is divergent. When φ=0, it is a plane refraction, that is, the parallel light bundle after refraction is still a parallel light bundle along the axis, and no refraction phenomenon occurs.

[0108] Focal length: the distance from the principal plane of the lens to the corresponding focal point.

[0109] Focal length: the range of the focal length of the lens.

[0110] Abbe number: the Abbe number of a lens is the dispersion coefficient of the lens, which refers to the ratio of the difference in refractive index of the lens at different wavelengths, and is used to represent the degree of dispersion of the lens. Generally, the larger the refractive index of the medium, the more serious the dispersion, and the smaller the Abbe number. Conversely, the smaller the refractive index of the medium, the less serious the dispersion, and the larger the Abbe number.

[0111] Aberration: the deviation from the ideal condition of Gaussian optics (first-order approximation theory or near-axis light) due to the difference between the results obtained by non-near-axis light tracing and the results obtained by near-axis light tracing. Aberration is divided into two categories: chromatic aberration and monochromatic aberration. Chromatic aberration is the dispersion phenomenon caused by the difference in refractive index of the lens material for different wavelengths of light. The dispersion of the refractive index with the increase of the wavelength can be called normal dispersion, while the dispersion of the refractive index with the increase of the wavelength can be called negative dispersion (or abnormal dispersion). Monochromatic aberration is the aberration that occurs even in highly monochromatic light. According to the effect, monochromatic aberration is divided into two categories: "blurring the image" and "distorting the image". The former includes spherical aberration and astigmatism, and the latter includes image field curvature and distortion. Chromatic aberration includes axial chromatic aberration and off-axis chromatic aberration. Axial chromatic aberration refers to the difference in focal points of different colors of light along the optical axis due to the difference in refractive index of the lens for different wavelengths of light.

[0112] Object plane: the object is simplified to a point on the optical axis (object distance point), and a plane passing through the point and perpendicular to the optical axis.

[0113] Embodiments of the present application provide an electronic device, which can include a mobile phone, a tablet computer, a smart bracelet, a smart watch, etc. Embodiments of the present application do not limit the electronic device. The electronic device includes a lens module, and through the lens module, functions such as photographing and video recording can be achieved.

[0114] In the following, the electronic device will be taken as a mobile phone as an example for introduction. It can be understood that the electronic device in embodiments of the present application is not limited to a mobile phone. Please refer to FIG. 1, the electronic device 1 includes a housing 12 and a display panel 11, wherein the housing 12 can include a middle frame 13 and a back cover 14, the display panel 11 covers one side of the middle frame 13, the back cover 14 covers the other side of the middle frame 13, and the middle frame 13, the back cover 14 and the display panel 11 are surrounded to form a receiving cavity 15; the electronic device 1 further includes a battery 16 and a mainboard 17 arranged in the receiving cavity 15, the mainboard 17 and the battery 16 can be fixed on the middle frame 13, and the mainboard 17 is electrically connected with the battery 16 and the display panel 11.

[0115] In some embodiments, the lens module 2 can be a rear camera, and correspondingly, an opening 18 is arranged on the back cover 14, the lens module 2 can be arranged in the receiving cavity 15, and the lens module 2 is opposite to the opening 18; the lens module 2 is electrically connected with the mainboard 17 to perform photographing or video recording under the control of the mainboard 17.

[0116] In other embodiments, the lens module 2 can also be a front camera, and correspondingly, an opening 18 is arranged on the display panel 11, the lens module 2 is arranged in the receiving cavity 15, and the lens module 2 is opposite to the opening 18; the lens module 2 is electrically connected with the mainboard 17 to perform photographing or video recording under the control of the mainboard 17.

[0117] Please refer to FIG. 2, in embodiments of the present application, the lens module 2 includes a light-transmitting cover plate 216, an optical lens 20 and an optical sensor 240, the light-transmitting cover plate 216, the optical lens 20 and the optical sensor 240 can be arranged along an optical axis, the optical sensor 240 is located on an image side of the optical lens 20, the light-transmitting cover plate 216 is located on an object side of the optical lens 20, external light passes through the light-transmitting cover plate 216 and the optical lens 20 and is received by the optical sensor 240 to form an image on the optical sensor 240; the optical sensor 240 is electrically connected with the mainboard 17 shown in FIG. 1 to convert the received image into an electrical signal and send it to the mainboard 17, thereby realizing photographing or video recording.

[0118] In the implementation manner, the light-transmissive cover plate 216 is located at the object side of the optical lens 20, and the light-transmissive cover plate 216 can realize the protection and dust prevention of the optical lens 20, and the material of the light-transmissive cover plate 216 can include glass, resin and the like, and the embodiments of the present application do not limit the material of the light-transmissive cover plate 216.

[0119] In the implementation manner, the optical sensor 240 can include a CCD image sensor or a CMOS image sensor or the like photosensitive device, and the embodiments of the present application do not limit the optical sensor 240, as long as the image formed by the lens assembly 220 can be converted into an electrical signal and sent to the mainboard 17. The lens module 2 can also include a circuit board, and the optical sensor 240 can be arranged on the surface of the circuit board. The circuit board is provided with a circuit electrically connected with the optical sensor 240, and the circuit can be electrically connected with the mainboard 17, so as to realize the electrical connection between the mainboard 17 and the optical sensor 240. In some embodiments, the optical sensor 240 can move in a direction perpendicular to the optical axis, so as to realize the anti-shake effect of the lens module 2.

[0120] Please refer to FIG. 2, in the embodiments of the present application, the optical lens 20 can also include a diaphragm 213 and a filter 214. The diaphragm 213 is arranged between the optical lens 20 and the light-transmissive cover plate 216, and the diaphragm 213 can limit the light quantity of the lens assembly 220. The diaphragm 213 can be a variable diaphragm, and the variable diaphragm can be electrically connected with the mainboard 17, so as to control the light quantity of the variable diaphragm through the mainboard 17, so as to adapt to different shooting and recording scenes. The filter 214 is arranged between the optical sensor 240 and the lens assembly 220, and the filter 214 can filter the light rays to the optical sensor 240, so as to eliminate the required light rays and improve the imaging quality.

[0121] The optical lens 20 includes a plurality of lenses arranged along the optical axis, and the light rays from the outside of the world pass through the lenses in sequence and form an image on the optical sensor 240. The embodiments of the present application do not limit the number of lenses in the optical lens 20, and reasonable setting of the number of lenses and the optical power of the lenses can improve the clarity of the image formed by the optical lens 20 on the optical sensor 240.

[0122] In some embodiments of the related art, the optical lens 20 can include a plurality of lenses with fixed focal length, and in the shooting process, the zoom is realized by combining different lenses with fixed focal length. However, such optical lens 20 will result in an increase in size, which is not conducive to the thinning of the electronic device 1.

[0123] FIG. 3 is a structural diagram of an optical lens according to an embodiment of the present application. FIG. 3(1) is a structural diagram of the optical lens in a medium-long focal state, FIG. 3(2) is a structural diagram of the optical lens in a macro state, and FIG. 3(3) is a structural diagram of the optical lens in an ultra-long focal state.

[0124] Therefore, in the embodiment of the present application, the optical lens 20 can include a first lens 201, a first reflecting element 28, and a second lens 202.

[0125] The first lens 201 includes a first lens group 21 and a second lens group 22, the focal power of the first lens group 21 and the focal power of the second lens group 22 are both positive, the optical axis of the first lens group 21 is a first optical axis L1, the optical axis of the second lens group 22 is a second optical axis L2, and the first optical axis L1 is parallel to the second optical axis L2.

[0126] The second lens 202 includes a third lens group 23 and a fourth lens group 24, the optical axis of the third lens group 23 and the optical axis of the fourth lens group 24 are both a third optical axis L3, and the first optical axis L1 and the second optical axis L2 are both perpendicular to the third optical axis L3. As shown in FIG. 3, the first optical axis L1 can be perpendicular to the third optical axis L3, and the second optical axis L2 can be perpendicular to the third optical axis L3.

[0127] As shown in FIG. 3, the first lens group 21 and the second lens group 22 can each include one lens, and the third lens group 23 and the fourth lens group 24 can each include at least two lenses. Of course, in some other examples, the first lens group 21 and the second lens group 22 can each include at least two lenses, and the third lens group 23 and the fourth lens group 24 can each include one lens. In the embodiment of the present application, the number of lenses in the first lens group 21, the second lens group 22, the third lens group 23, and the fourth lens group 24 is not limited.

[0128] To realize different shooting scenes, the optical lens 20 can have a first focal segment and a second focal segment.

[0129] In the embodiment of the present application, when the optical lens 20 is in the first focal segment, the shooting distance can be, for example, 10 cm to 10 m. When the optical lens 20 works in the first focal segment, the optical lens 20 can include a macro state, a medium-long focal state, and a state switching between the macro state and the medium-long focal state. For example, the optical lens 20 in the macro state can shoot macro scenes including flowers, birds, insects, fish, etc. The optical lens 20 in the medium-long focal state can shoot close-up scenes such as people or scenes at infinity. Accordingly, when the optical lens 20 is in the first focal segment, the optical lens 20 can be equivalent to a macro lens or a medium-long focal lens.

[0130] In the embodiments of the present application, the second focal length can be greater than the first focal length. When the optical lens 20 is in the second focal length, the shooting distance can be N times (N > 1) of the shooting distance when the optical lens 20 is in the first focal length. When the optical lens 20 is in the second focal length, the optical lens 20 can include an ultra-long focal state, in which the optical lens 20 can shoot, for example, a scene at infinity including the sky, the starry sky, and the like. Accordingly, when the optical lens 20 is in the second focal length, the optical lens 20 can be equivalent to an ultra-long focal lens.

[0131] When the optical lens 20 is in the first focal length, the first lens group 21, the first reflecting element 28, the third lens group 23, and the fourth lens group 24 are arranged in sequence along the first optical axis L1 and the third optical axis L3 from the object side to the image side. The first reflecting element 28 is configured to turn the light path from the first lens group 21 towards the third lens group 23 and the fourth lens group 24. At least two lens groups in the first lens 201 and the second lens 202 are configured to move along the optical axis.

[0132] For example, since the optical power of the first lens group 21 is positive, the incident light rays of the object converge after passing through the first lens group 21, and the converged incident light rays are turned by the first reflecting element 28 to be transmitted to the optical sensor 240 after sequentially passing through the third lens group 23 and the fourth lens group 24.

[0133] In some embodiments, the first reflecting element 28 can be a right-angle prism, and the first reflecting element 28 can include two right-angle surfaces and one inclined surface. The inclined surface is a total reflection surface, and the incident light rays can be turned at the inclined surface. In this example, the right-angle surface of the first reflecting element 28 on the image side is arranged opposite to the third lens group 23, and the other right-angle surface of the first reflecting element 28 is arranged towards the object. That is, the first reflecting element 28 is arranged on the object side of the third lens group 23. In this way, when the incident light rays of the object enter the first reflecting element 28, the incident light rays can be turned by 90° at the inclined surface, and the turned incident light rays can reach the optical sensor 240 through the second lens 202. By arranging the first reflecting element 28, it is beneficial to avoid the stacking of the third lens group 23 and the fourth lens group 24 in the direction perpendicular to the object plane, thereby facilitating the reduction of the size of the optical lens 20 in the direction perpendicular to the object plane.

[0134] In the zooming process in which the optical lens 20 switches between the first focal length and the second focal length, the first reflecting element 28 is configured to move along the third optical axis L3 between the first lens 201 and the second lens 202. For example, in the zooming process in which the optical lens 20 switches from the first focal length to the second focal length, the first reflecting element 28 moves along the third optical axis L3 in a direction away from the second lens 202; in the zooming process in which the optical lens 20 switches from the second focal length to the first focal length, the first reflecting element 28 moves along the third optical axis L3 in a direction close to the second lens 202.

[0135] For example, when the optical lens 20 is in the first focal length, the first reflecting element 28 is located at the intersection of the first optical axis L1 and the third optical axis L3; in the zooming process in which the optical lens 20 switches from the first focal length to the second focal length, the first reflecting element 28 moves along the third optical axis L3; when the optical lens 20 is in the second focal length, the first reflecting element 28 moves to the intersection of the second optical axis L2 and the third optical axis L3.

[0136] When the optical lens 20 is in the first focal length, at least two lens groups in the first lens group 21, the third lens group 23 and the fourth lens group 24 can move along the optical axis, including the following cases: for example, the first lens group 21 can move along the first optical axis L1, and the third lens group 23 can move along the third optical axis L3; or the first lens group 21 can move along the first optical axis L1, and the fourth lens group 24 can move along the third optical axis L3; or the third lens group 23 can move along the third optical axis L3, and the fourth lens group 24 can move along the third optical axis L3. Through the above arrangement, the optical lens 20 can clearly image when it is in the first focal length.

[0137] When the optical lens 20 is in the second focal length, the second lens group 22, the first reflecting element 28, the third lens group 23 and the fourth lens group 24 are arranged in sequence along the second optical axis L2 and the third optical axis L3 from the object side to the image side, the second reflecting element 29 is configured to turn the light path from the second lens group 22 towards the third lens group 23 and the fourth lens group 24, and at least two lens groups in the first lens 201 and the second lens 202 are configured to move along the optical axis.

[0138] For example, since the optical power of the second lens group 22 is positive, the incident light of the object converges after passing through the second lens group 22, and the converged incident light is turned by the first reflecting element 28 so that the incident light passes through the third lens group 23 and the fourth lens group 24 in sequence and then is transmitted to the optical sensor 240.

[0139] When the optical lens 20 is in the second focal segment, at least two lens groups in the second lens group 22, the third lens group 23 and the fourth lens group 24 can move along the optical axis, which can include the following cases: for example, the second lens group 22 can move along the second optical axis L2, and the third lens group 23 can move along the third optical axis L3; or the second lens group 22 can move along the second optical axis L2, and the fourth lens group 24 can move along the third optical axis L3; or the third lens group 23 can move along the third optical axis L3, and the fourth lens group 24 can move along the third optical axis L3. Through the above setting, the optical lens 20 can clearly image when shooting in the second focal segment.

[0140] Through the above setting, since at least two lens groups in the first lens 201 and the second lens 202 can move along the optical axis, the degree of freedom of the optical lens 20 can be increased, and under the condition that the maximum image height of the optical sensor 240 is the same (under the same target surface), the size of the optical lens 20 can be more compact, thereby facilitating the thinning of the electronic device 1. Or, under the limited size, the maximum image height of the optical sensor 240 is increased (large target surface is realized).

[0141] Taking a mobile phone as an example, the shooting scenes of the optical lens 20 in the first focal segment and the second focal segment are exemplarily described. For example, in a possible example, when the user opens the shooting function of the mobile phone (such as by clicking the camera application on the display interface of the display screen of the mobile phone), when the user switches to the macro mode or the medium-long focal state for shooting (such as by selecting the macro mode or the medium-long focal state on the display interface of the display screen), the optical lens 20 is in the first focal segment, and the optical lens 20 can realize high-quality shooting of a near scene. When the user switches to the super-long focal state for shooting (such as by selecting the super-long focal state on the display interface of the display screen), the first reflective element 28 moves along the third optical axis L3 in the direction towards the object side, and the optical lens 20 is in the second focal segment, and the optical lens 20 can realize high-quality shooting of a distant scene.

[0142] Correspondingly, when the user opens the shooting function of the mobile phone and switches to the super-long focal state for shooting, the optical lens 20 is in the second focal segment. When the user switches from the super-long focal state to the macro mode or the medium-long focal state for shooting, the first reflective element 28 moves along the third optical axis L3 in the direction towards the image side, so that the optical lens 20 is in the first focal segment.

[0143] Or, in another possible example, the optical lens 20 can also realize automatic selection of the shooting mode, for example, when the user opens the shooting function of the mobile phone for shooting, the lens module 2 can judge the applicable shooting mode according to the current imaging effect of the optical sensor 240, for example, the lens module 2 judges that the current scene is suitable for ultra-long focal state shooting, and the optical lens 20 is currently in the first focal segment, then the first reflecting element 28 is moved along the third optical axis L3 in the direction of the object side, so that the optical lens 20 is switched to the second focal segment. Or, when the lens module 2 judges that the current scene is suitable for macro mode shooting, and the optical lens 20 is currently in the second focal segment, then the first reflecting element 28 is moved along the third optical axis L3 in the direction of the image side, so that the optical lens 20 is switched to the first focal segment.

[0144] In some embodiments, the first reflecting element 28 can be moved in a direction perpendicular to the third optical axis L3 to enable the optical lens 20 to have an anti-shake effect. Or, in some embodiments, the first reflecting element 28 can have a reference point, and the first reflecting element 28 can rotate around the reference point to enable the optical lens 20 to have an anti-shake effect.

[0145] In the embodiments of the present application, the concave-convex shapes of the image side and the object side of each lens in the lens group are not limited. At least the part corresponding to the optical axis of the image side of the lens can be a convex surface, or can also be a concave surface. At least the part corresponding to the optical axis of the object side of the lens can be a convex surface, or can also be a concave surface. The specific shape can be selected and set according to the actual lens matching requirements.

[0146] In the embodiments of the present application, the forming materials of each lens in the lens group are not limited. For example, the forming material of the lens can be plastic or glass, which is beneficial to reduce the cost of the optical lens 20 and has high design flexibility, facilitating popularization and production implementation.

[0147] In the embodiments of the present application, the shapes of each lens in the lens group are not limited. For example, the shape of the lens can be circular or elliptical, which has a wide range of applications and is easy to produce.

[0148] In the embodiments of the present application, the moving trajectories of the lenses in the lens group during the process of the optical lens 20 being in the first focal segment or the second focal segment are not limited. For example, the lenses in the lens group can move linearly along the optical axis, or the lenses in the lens group can rotate around the optical axis while moving relatively along the optical axis.

[0149] In the embodiments of the present application, when the lens group includes multiple lenses, the movement mode of all the lenses in the lens group is not limited during the process that the optical lens 20 is in the first focal length or the second focal length. For example, the optical lens 20 can further include a moving device, and all the lenses in the lens group can be moved as a whole by the moving device along the optical axis.

[0150] In some embodiments, when the optical lens 20 is in the first focal length, the effective focal length of the optical lens 20 can be EFL1, and the ratio of the focal length f1 of the first lens group 21 to EFL1 satisfies the condition formula: 0.2 < f1 / EFL1 < 5. For example, the ratio of the focal length f1 of the first lens group 21 to EFL1 can be 0.3, 2, 3, or 4. By reasonably allocating the refractive power of the first lens group 21, the first lens group 21 has a large refractive power, which is beneficial to increase the aperture of the optical lens 20 and realize high-quality imaging of the optical lens 20 in the first focal length.

[0151] In some embodiments, when the optical lens 20 is in the second focal length, the effective focal length of the optical lens 20 is EFL2, and the ratio of the focal length f2 of the second lens group 22 to EFL2 satisfies the condition formula: 0.2 < f2 / EFL2 < 2.5. For example, the ratio of the focal length f2 of the second lens group 22 to EFL2 can be 0.3, 2, or 2.4. By reasonably allocating the refractive power of the second lens group 22, the second lens group 22 has a large refractive power, which is beneficial to increase the aperture of the optical lens 20 and realize high-quality imaging of the optical lens 20 in the second focal length.

[0152] In some embodiments, when the optical lens 20 is in the macro state, the magnification Mag of the optical lens 20 satisfies the condition formula: 0.1x < Mag < 0.5x. For example, the magnification Mag of the optical lens 20 can be 0.2x, 0.3x, or 0.4x. The optical lens 20 has a high magnification, which can better meet the needs of shooting macro scenes and further improve the imaging quality and effect of the optical lens 20 in shooting macro scenes.

[0153] In some embodiments, the refractive power of the third lens group 23 can be positive, and the refractive power of the fourth lens group 24 can be negative. In this way, after the light converges through the first lens 201, the combination of the third lens group 23 and the fourth lens group 24 can irradiate on the optical sensor 240, which can correct chromatic aberration and aberration, and further improve the imaging quality of the optical lens 20.

[0154] In some embodiments, the second lens 202 can further include three or more lens groups. FIG. 4 is a structural diagram of another optical lens provided in the embodiments of the present application; wherein (1) of FIG. 4 is a structural diagram of the optical lens in a medium-long focal state, (2) of FIG. 4 is a structural diagram of the optical lens in a macro state, and (3) of FIG. 4 is a structural diagram of the optical lens in an ultra-long focal state.

[0155] As shown in FIG. 4, the second lens 202 can further include a fifth lens group 25, which can be located between the third lens group 23 and the fourth lens group 24, and the third optical axis L3 can be the optical axis of the fifth lens group 25.

[0156] Based on the above setting, when the optical lens 20 is in the first focal segment, in the direction from the object side to the image side along the first optical axis L1 and the third optical axis L3, the first lens group 21, the first reflecting element 28, the third lens group 23, the fifth lens group 25, and the fourth lens group 24 are sequentially arranged.

[0157] For example, since the optical power of the first lens group 21 is positive, the incident light of the object is converged after passing through the first lens group 21, and the converged incident light is turned through the first reflecting element 28, so that the incident light is transmitted to the optical sensor 240 after sequentially passing through the third lens group 23, the fifth lens group 25, and the fourth lens group 24.

[0158] Among them, when the optical lens 20 is in the first focal segment, at least two lens groups in the first lens group 21, the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the optical axis, including the following cases: for example, the first lens group 21 can move along the first optical axis L1, and at least one lens group in the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the third optical axis L3; or the first lens group 21 is fixed, and at least two lens groups in the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the third optical axis L3. Through the above setting, the focusing operation of the optical lens 20 in the first focal segment is realized, so that the optical lens 20 can clearly image when it is in the first focal segment.

[0159] Based on the above setting, when the optical lens 20 is in the second focal segment, in the direction from the object side to the image side along the second optical axis L2 and the third optical axis L3, the second lens group 22, the first reflecting element 28, the third lens group 23, the fifth lens group 25, and the fourth lens group 24 are sequentially arranged.

[0160] For example, since the optical power of the second lens group 22 is positive, the incident light rays of the object converge after passing through the second lens group 22, and the converged incident light rays are turned by the first reflecting element 28, so that the incident light rays are transmitted to the optical sensor 240 after sequentially passing through the third lens group 23, the fifth lens group 25, and the fourth lens group 24.

[0161] In the second focal length range, at least two lens groups of the second lens group 22, the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the optical axis, including the following cases: for example, the second lens group 22 can move along the first optical axis L1, and at least one lens group of the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the third optical axis L3; or the second lens group 22 is fixed, and at least two lens groups of the third lens group 23, the fifth lens group 25, and the fourth lens group 24 can move along the third optical axis L3. Through the above arrangement, the optical lens 20 can clearly image when shooting in the second focal length range.

[0162] In some embodiments, the optical power of the third lens group 23 is positive, the optical power of the fourth lens group 24 is negative, and the optical power of the fifth lens group 25 is positive. In this way, after the light rays converge through the first lens 201, the third lens group 23, the fifth lens group 25, and the fourth lens group 24, the light rays are irradiated on the optical sensor 240, which can correct chromatic aberration and aberration, thereby improving the imaging quality of the optical lens 20.

[0163] In some embodiments, the number of the fifth lens group 25 can be multiple. The structures of the multiple fifth lens groups 25 can be different. Compared with the embodiment in which the multiple fifth lens groups 25 are configured to be fixed, at least one of the fifth lens groups 25 in the embodiment of the present application can also move along the third optical axis L3, which facilitates further increasing the degree of freedom of the optical lens 20, and under the condition that the maximum image height of the optical sensor 240 is the same (under the same target surface), the size of the optical lens 20 can be further reduced. Or, under the limited size, the maximum image height of the optical sensor 240 is further increased (to realize a large target surface).

[0164] FIG. 5a is a structural diagram of another optical lens provided by the embodiment of the present application; wherein (1) of FIG. 5a is a structural diagram of the optical lens in a medium-long focal length state, (2) of FIG. 5a is a structural diagram of the optical lens in a macro state, and (3) of FIG. 5a is a structural diagram of the optical lens in an ultra-long focal length state.

[0165] FIG. 5b is a structural diagram of another optical lens provided by the embodiment of the present application; wherein FIG. 5b (1) is a structural diagram of the optical lens in a medium-long focus state, FIG. 5b (2) is a structural diagram of the optical lens in a macro state, and FIG. 5b (3) is a structural diagram of the optical lens in an ultra-long focus state.

[0166] In some embodiments, as shown in FIGS. 5a and 5b, the optical lens 20 can further include a second reflection element 29, which can be located on the image side of the fourth lens group 24. The second reflection element 29 can have at least one reflection surface, and can be configured to reflect the light path from the fourth lens group 24 to the image side of the second reflection element 29 at least once.

[0167] In some examples, the second reflection element 29 can include one reflection surface. For example, the second reflection element 29 can be a right-angle prism, which can include two right-angle surfaces and one inclined surface. The inclined surface is a total reflection surface, and the incident light rays can be turned over on the inclined surface, which is the reflection surface of the second reflection element 29. In this example, the right-angle surface on the image side of the second reflection element 29 is arranged opposite to the fourth lens group 24, and the other right-angle surface of the second reflection element 29 is arranged towards the optical sensor 240. That is, the first reflection element 28 is arranged on the image side of the fourth lens group 24. In this way, when the incident light rays of the object enter the second reflection element 29, the incident light rays can be turned over by 90° at the inclined surface, and the turned-over incident light rays can reach the optical sensor 240.

[0168] Through the above arrangement, the optical sensor 240 can be arranged parallel to the object plane, and when the size of the optical sensor 240 is large, the thickness of the electronic device 1 can also not be affected. That is, the size of the optical sensor 240 is no longer limited by the thickness of the electronic device 1, so that a larger optical sensor 240 can be arranged, which is conducive to improving the imaging quality.

[0169] FIG. 6 is a structural diagram of another optical lens provided by the embodiment of the present application. In some other examples, the second reflection element 29 can include multiple reflection surfaces, as shown in FIG. 6, the second reflection element 29 can include two reflection surfaces, and the two reflection surfaces have an included angle towards the fourth lens group 24. In this way, when the incident light rays of the object enter the second reflection element 29, the incident light rays are turned over at one reflection surface, the turned-over incident light rays are turned over at another reflection surface, and the incident light rays turned over again can reach the optical sensor 240.

[0170] Through the above arrangement, the second reflection element 29 can turn over the light path from the fourth lens group 24 multiple times, which is conducive to further reducing the size of the optical lens 20.

[0171] In some embodiments, the distance between the lens group of the first lens 201 and the first reflective element 28 when the optical lens 20 is in the non-working state is less than the distance between the lens group of the first lens 201 and the first reflective element 28 when the optical lens 20 is in the working state; and the lens group of the first lens 201 moves along the first optical axis L1 during the switching of the optical lens 20 from the non-working state to the working state. For example, the optical lens 20 can be switched from the working state to the non-working state by clicking the camera application on the display interface of the mobile phone display screen; similarly, the optical lens 20 can be switched from the non-working state to the working state by clicking the camera application on the display interface of the mobile phone display screen.

[0172] When the optical lens 20 is in the working state, it can include two cases: one, the optical lens 20 can work in the first focal segment; two, the optical lens 20 can work in the second focal segment.

[0173] FIG. 7a is a structural diagram of an optical lens provided by an embodiment of the present application in the switching between the non-working state and the working state in the first focal segment. The dashed line can show the position of the first lens group 21 in the non-working state, and the solid line can show the position of the first lens group 21 in the working state. Referring to FIG. 7a, the first lens group 21 of the first lens 201 can move towards the object side along the first optical axis L1 during the switching of the optical lens 20 from the non-working state to the working state in the first focal segment; and the first lens group 21 of the first lens 201 can move towards the image side along the first optical axis L1 during the switching of the optical lens 20 from the working state in the first focal segment to the non-working state. Through the above setting, the distance D1 between the first lens group 21 and the first reflective element 28 when the optical lens 20 is in the non-working state is less than the distance D2 between the first lens group 21 and the first reflective element 28 when the optical lens 20 is in the working state.

[0174] FIG. 7b is a structural diagram of switching of the optical lens in a non-working state and in a working state in a second focal segment according to an embodiment of the present application. The dashed line can show the position of the second lens group 22 in the non-working state, and the solid line can show the position of the second lens group 22 in the working state. Referring to FIG. 7b, in the process of switching of the optical lens 20 from the non-working state to the working state in the second focal segment, the second lens group 22 of the first lens 201 can move to the object side along the second optical axis L2; in the process of switching of the optical lens 20 from the working state in the second focal segment to the non-working state, the second lens group 22 of the first lens 201 can move to the image side along the second optical axis L2. Through the above setting, the distance D3 between the second lens group 22 and the first reflecting element 28 when the optical lens 20 is in the non-working state is less than the distance D4 between the second lens group 22 and the first reflecting element 28 when the optical lens 20 is in the working state.

[0175] In summary, when the optical lens 20 is in the working state, the first lens group 21 or the second lens group 22 can protrude out of the shell of the electronic device to realize the shooting operation; when the optical lens 20 is in the non-working state, the first lens group 21 or the second lens group 22 can be located in the shell of the electronic device, which is conducive to improving the sealing performance of the lens module 2, thereby realizing dustproof and light shielding.

[0176] In some embodiments, in combination with FIGS. 7a and 7b, the optical power of the third lens group 23 is positive, the distance H1 between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the first focal segment can be less than the distance H3 between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the second focal segment. The optical power of the fourth lens group 24 is negative, the distance H2 between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the first focal segment can be less than or equal to the distance H4 between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the second focal segment; the optical sensor 240 is located on the image side of the fourth lens group 24.

[0177] For example, among the plurality of lens groups of the second lens 202, the third lens group 23 is located at the leftmost end of the plurality of lens groups, and the fourth lens group 24 is located at the rightmost end of the plurality of lens groups, the maximum distance between the third lens group 23 and the fourth lens group 24 when the optical lens 20 is in the first focal segment is greater than the maximum distance between the third lens group 23 and the fourth lens group 24 when the optical lens 20 is in the second focal segment. Through the above setting, the optical lens 20 can clearly image when shooting in the first focal segment and the second focal segment.

[0178] In some embodiments, when the optical lens 20 is in the first focal length, the first lens group 21 can be configured to move towards the object side along the first optical axis L1, and at least one lens group in the second lens 202 can be configured to move along the third optical axis L3. In the embodiments of the present application, the movement distance of the first lens group 21, and the movement direction and movement distance of at least one lens group in the second lens 202 are not specifically limited. Through the above setting, the optical lens 20 can clearly image when shooting in the first focal length.

[0179] In some embodiments, when the optical lens 20 is in the first focal length, the first lens group 21 is configured to be fixed, and at least two lens groups in the second lens 202 are configured to move along the third optical axis L3. Through the above setting, the optical lens 20 can clearly image when shooting in the first focal length.

[0180] Based on the above structure, in combination with FIGS. 5a and 5b, in the process of switching the optical lens 20 from the medium-long focal length state to the macro state, the third lens group 23 can move towards the object side along the third optical axis L3; in the process of switching the optical lens 20 from the macro state to the medium-long focal length state, the third lens group 23 moves towards the image side along the third optical axis L3. For example, when the optical lens 20 is in the first focal length, and in the process of switching the optical lens 20 from the medium-long focal length state to the macro state, the distance between the third lens group and the optical sensor 240 increases; in the process of switching the optical lens 20 from the macro state to the medium-long focal length state, the distance between the third lens group 23 and the optical sensor 240 decreases. Through the above setting, the optical lens 20 can clearly image when shooting in the first focal length.

[0181] In the embodiments of the optical lens 20 including the third lens group 23 and the fourth lens group, in the process of switching the optical lens 20 from the medium-long focal length state to the macro state, the first lens group 21 can be fixed, and the fourth lens group 24 can move towards the object side along the third optical axis L3, so that the distance between the fourth lens group 24 and the optical sensor 240 increases. Alternatively, the first lens group 21 can move towards the object side along the first optical axis L1, and the fourth lens group 24 can move towards the image side along the third optical axis L3, so that the first lens group 21 can protrude out of the shell of the electronic device, and the distance between the fourth lens group 24 and the optical sensor 240 decreases. Through the above setting, the optical lens 20 can clearly image when shooting in the first focal length.

[0182] Similarly, in the process of switching the optical lens 20 from the macro state to the medium-long focal length state, the first lens group 21 can be fixed, and the fourth lens group 24 can move towards the image side along the third optical axis L3. Alternatively, the first lens group 21 can move towards the image side along the first optical axis L1, and the fourth lens group 24 can move towards the object side along the third optical axis L3.

[0183] Alternatively, in the embodiment in which the optical lens 20 comprises the third lens group 23, the fifth lens group 25 and the fourth lens group 24, during the switching process from the medium-long focus state to the macro state, the first lens group 21 can be fixed. The fourth lens group 24 can move towards the object side along the third optical axis L3, or the fourth lens group 24 can be fixed so that the distance between the fourth lens group 24 and the optical sensor 240 increases or remains unchanged. The fifth lens group 25 can move towards the object side along the third optical axis L3. Through the above arrangement, the optical lens 20 can clearly image when shooting in the first focus range.

[0184] Similarly, during the switching process from the macro state to the medium-long focus state, the first lens group 21 can be fixed. The fourth lens group 24 can move towards the image side along the third optical axis L3, or the fourth lens group 24 can be fixed. The fifth lens group 25 can move towards the image side along the third optical axis L3.

[0185] In some embodiments, when the optical lens 20 is in the second focus range, the second lens group 22 is configured to move towards the object side along the second optical axis L2, and at least one lens group in the second lens 202 is configured to move along the third optical axis L3. In the embodiments of the present application, the movement distance of the second lens group 22, and the movement direction and movement distance of the at least one lens group in the second lens 202 are not specifically limited. Through the above arrangement, the optical lens 20 can clearly image when shooting in the second focus range.

[0186] In some embodiments, when the optical lens 20 is in the second focus range, the second lens group 22 is configured to be fixed, and at least two lens groups in the second lens 202 are configured to move along the third optical axis L3. In the embodiments of the present application, the movement direction and movement distance of the at least two lens groups in the second lens 202 are not specifically limited. Through the above arrangement, the optical lens 20 can clearly image when shooting in the second focus range.

[0187] Based on the above structure, in combination with FIGS. 5a and 5b, in some embodiments, when the optical lens 20 is in the second focal length, in the process of switching from the medium-long focal length state to the super-long focal length state, the second lens group 22 moves along the second optical axis L2 to the object side; the third lens group 23 moves along the third optical axis L3 to the image side; and the fourth lens group 24 is fixed. Exemplarily, the third lens group 23 can move. Through the above setting, the distance between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the first focal length can be less than the distance between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the second focal length, the distance between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the first focal length can be equal to the distance between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the second focal length, and the optical lens 20 can clearly image when it is in the second focal length.

[0188] Similarly, in the process of switching from the super-long focal length state to the medium-long focal length state, the second lens group 22 moves along the second optical axis L2 to the image side; the third lens group 23 moves along the third optical axis L3 to the object side; and the fourth lens group 24 is fixed.

[0189] Based on the above structure, in combination with FIGS. 5a and 5b, in some embodiments, when the optical lens 20 is in the second focal length, in the process of switching from the medium-long focal length state to the super-long focal length state, the second lens group 22 is fixed, the third lens group 23 can move along the third optical axis L3 to the object side, and the fourth lens group 24 can move along the third optical axis L3 to the object side. Exemplarily, the distance that the third lens group 23 moves can be less than the distance that the first reflecting element 28 moves, so that the distance between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the first focal length can be less than the distance between the third lens group 23 and the first reflecting element 28 when the optical lens 20 is in the second focal length, the distance between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the first focal length can be less than the distance between the fourth lens group 24 and the optical sensor 240 when the optical lens 20 is in the second focal length, and the optical lens 20 can clearly image when it is in the second focal length.

[0190] Similarly, in the process of switching from the super-long focal length state to the medium-long focal length state, the second lens group 22 can be fixed, the third lens group 23 can move along the third optical axis L3 to the image side, and the fourth lens group 24 can move along the third optical axis L3 to the object side.

[0191] Further, in the embodiment in which the optical lens 20 comprises the third lens group 23, the fifth lens group 25 and the fourth lens group 24, in the switching process of the optical lens 20 from the medium-long focal state to the super-long focal state, the fifth lens group 25 can move towards the object side along the third optical axis L3. Through the above arrangement, the optical lens 20 can clearly image when shooting in the second focal segment.

[0192] Similarly, in the switching process of the optical lens 20 from the medium-long focal state to the super-long focal state, the fifth lens group 25 can move towards the image side along the third optical axis L3.

[0193] The structure and performance of the optical lens 20 provided in the present application will be described below in combination with specific embodiments.

[0194] Embodiment one

[0195] In the embodiments of the present application, with reference to FIGS. 8, 9 and 10, the first lens group 21 can comprise a first lens 211 with optical power, the second lens group 22 can comprise a second lens 221 with optical power, the third lens group 23 can comprise a third lens 231, a fourth lens 232 and a fifth lens 233 with optical power, the fourth lens group 24 can comprise a sixth lens 241, a seventh lens 242 and an eighth lens 243 with optical power, and the third lens 231, the fourth lens 232, the fifth lens 233, the sixth lens 241, the seventh lens 242 and the eighth lens 243 are arranged in sequence along the third optical axis L3. The first reflective element 28 has one reflecting surface, and the second reflective element 29 has one reflecting surface.

[0196] The optical power of the first lens group 21 is positive. Specifically, the object side surface of the first lens 211 at least corresponding to the first optical axis L1 can be a convex surface, and the image side surface of the first lens 211 at least corresponding to the first optical axis L1 can be a concave surface.

[0197] The optical power of the second lens group 22 is positive. Specifically, the object side surface of the second lens 221 at least corresponding to the second optical axis L2 can be a convex surface, and the image side surface of the second lens 221 at least corresponding to the second optical axis L2 can be a concave surface.

[0198] The third lens group 23 has positive optical power. Specifically, the object side surface of the third lens 231 corresponding to the third optical axis L3 can be a convex surface, and the image side surface of the third lens 231 corresponding to the third optical axis L3 can be a convex surface. The object side surface of the fourth lens 232 corresponding to the third optical axis L3 can be a convex surface, and the image side surface of the fourth lens 232 corresponding to the third optical axis L3 can be a concave surface. The object side surface of the fifth lens 233 corresponding to the third optical axis L3 can be a concave surface, and the image side surface of the fifth lens 233 corresponding to the third optical axis L3 can be a concave surface.

[0199] The fourth lens group 24 has negative optical power. Specifically, the object side surface of the sixth lens 241 corresponding to the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 241 corresponding to the third optical axis L3 can be a concave surface. The object side surface of the seventh lens 242 corresponding to the third optical axis L3 can be a concave surface, and the image side surface of the seventh lens 242 corresponding to the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 243 corresponding to the third optical axis L3 can be a convex surface, and the image side surface of the eighth lens 243 corresponding to the third optical axis L3 can be a convex surface.

[0200] Referring to FIGS. 8 and 9, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the image side along the third optical axis L3. In the zooming process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 8 and 10, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0201] Table 1.1 shows the optical parameters of each lens and reflecting element in the optical lens 20 provided by the embodiment one of the present application.

[0202] Table 1.1

[0203] G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0204] S1 and S2 are the object side and image side of the first lens 211 respectively, S3 and S4 are the object side and image side of the second lens 221 respectively, S5 and S6 are the object side and image side of the first reflecting element 28 respectively, S7 and S8 are the object side and image side of the third lens 231 respectively, S9 and S10 are the object side and image side of the fourth lens 232 respectively, S11 and S12 are the object side and image side of the fifth lens 233 respectively, S13 and S14 are the object side and image side of the sixth lens 241 respectively, S15 and S16 are the object side and image side of the seventh lens 242 respectively, S17 and S18 are the object side and image side of the eighth lens 243 respectively, S19 and S20 are the object side and image side of the second reflecting element 29 respectively.

[0205] The thickness is the thickness of the optical element in the direction of the optical axis or the thickness of the air gap between the optical elements. The thickness corresponding to the row where the object side of the first lens 211 is located is the thickness of the first lens 211 in the direction of the optical axis, the thickness corresponding to the row where the image side of the first lens 211 is located is the distance from the image side of the first lens 211 to the object side of the second lens 221 in the direction of the optical axis, and so on. Wherein, P1 is the thickness of the air gap between the optical elements when the optical lens 20 is in the medium-long focal state; P2 is the thickness of the air gap between the optical elements when the optical lens 20 is in the macro state; P3 is the thickness of the air gap between the optical elements when the optical lens 20 is in the super-long focal state.

[0206] Table 1.2 shows the aspheric coefficients of each lens in the optical lens 20 provided by the embodiment one of the present application.

[0207] Table 1.2

[0208] As can be seen from Table 1.2, each lens in the first lens 201 and the second lens 202 is an aspheric lens, that is, the optical lens 20 includes 16 aspheric surfaces, and the aspheric surface profile Z of each lens in the optical lens 20 can be calculated by the following aspheric formula:

[0209] Wherein, the parameter c = 1 / R, R is the radius of curvature, r is the distance from a point on the optical surface to the optical axis, Z is the aspheric height of the point in the direction of the optical axis, k is the quadratic surface coefficient of the surface, i is the aspheric coefficient term, i is 30 in this embodiment, and Ai is the aspheric coefficient.

[0210] Table 1.3 shows the focal length of each lens and lens group in the optical lens 20 provided by the embodiment one of the present application.

[0211] Table 1.3

[0212] The optical lens 20 can realize small volume and large target surface and other characteristics by adopting the above lenses, and the optical parameters of the optical lens 20 composed of the above lenses can be seen from Table 1.4.

[0213] Table 1.4 shows the optical parameters of an optical lens provided in the embodiment one of the present application.

[0214] Table 1.4

[0215] In the figures, the abscissa represents different frequencies, the ordinate represents modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from Figures 11, 12 and 13, the optical lens provided in the embodiment can realize high-quality imaging at the first focal segment and the second focal segment.

[0216] Embodiment two

[0217] In the embodiment, the lens groups in the first lens group 21, the second lens group 22, the third lens group 23, the fourth lens group 24 and the first reflecting element 28 can refer to the above embodiment one. The difference from the above embodiment one is that:

[0218] Specifically, the object side surface of the first lens 211 can be a convex surface at least corresponding to the first optical axis L1, and the image side surface of the first lens 211 can be a convex surface at least corresponding to the first optical axis L1.

[0219] Specifically, the object side surface of the second lens 221 can be a convex surface at least corresponding to the second optical axis L2, and the image side surface of the second lens 221 can be a convex surface at least corresponding to the second optical axis L2.

[0220] The third lens group 23 has positive refractive power. Specifically, the object side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a convex surface. The object side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface.

[0221] The fourth lens group 24 has negative refractive power. Specifically, the object side surface of the sixth lens 241 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 241 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the seventh lens 242 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the seventh lens 242 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 243 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the eighth lens 243 corresponding to at least the third optical axis L3 can be a convex surface.

[0222] Referring to FIGS. 14 and 15, in the process of switching the optical lens 20 from the medium-long focus state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the image side along the third optical axis L3. In the process of switching the optical lens 20 from the first focus section to the second focus section, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 14 and 16, in the process of switching the optical lens 20 from the medium-long focus state to the super-long focus state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0223] Table 2.1 shows the optical parameters of each lens and reflecting element in the optical lens 20 provided in Embodiment One.

[0224] Table 2.1

[0225] G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0226] The specific illustrations of S0-S20 can be referred to Embodiment Two, which will not be described herein. The meanings of the parameters such as the radius of curvature, the thickness, and the material can also be referred to Embodiment Two, which will not be described herein.

[0227] Table 2.2 shows the aspherical coefficients of each lens in the optical lens 20 provided in Embodiment Two of the present application.

[0228] Table 2.2

[0229] As can be seen from Table 2.2, each lens in the first lens 201 and the second lens 202 is an aspherical lens, that is, the optical lens 20 includes 16 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 20 can be calculated by the aspherical surface formula (1) above.

[0230] Table 2.3 shows the focal length of each lens and lens group in the optical lens 20 provided in Embodiment Two of the present application.

[0231] Table 2.3

[0232] The optical lens 20 can realize the characteristics of small volume and large target surface by using the lenses above and the matching of the number of lenses, the focal length, the thickness, the refractive index, and the Abbe number of each lens. The optical parameters of the optical lens 20 composed of the lenses above can be seen from Table 2.4 below.

[0233] Table 2.4 shows the optical parameters of the optical lens provided in Embodiment Two of the present application.

[0234] Table 2.4

[0235] In FIGS. 17, 18, and 19, the abscissa represents different frequencies, the ordinate represents the modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 17, 18, and 19, the optical lens provided in the embodiment can realize high-quality imaging at the first focal length and the second focal length.

[0236] Embodiment Three

[0237] In the embodiments of the present application, the lens groups in the first lens group 21, the second lens group 22, the third lens group 23, the fourth lens group 24, and the first reflecting element 28 can refer to the above-mentioned Embodiment One. The difference from the above-mentioned Embodiment One is that:

[0238] The first lens group 21 has positive optical power. Specifically, the object side surface of the first lens 211 corresponding to at least the first optical axis L1 can be a convex surface, and the image side surface of the first lens 211 corresponding to at least the first optical axis L1 can be a convex surface.

[0239] The second lens group 22 has positive optical power. Specifically, the object side surface of the second lens 221 corresponding to at least the second optical axis L2 can be a convex surface, and the image side surface of the second lens 221 corresponding to at least the second optical axis L2 can be a convex surface.

[0240] The third lens group 23 has positive optical power. Specifically, the object side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a convex surface. The object side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface.

[0241] The fourth lens group 24 has negative optical power. Specifically, the object side surface of the sixth lens 241 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 241 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the seventh lens 242 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the seventh lens 242 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 243 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the eighth lens 243 corresponding to at least the third optical axis L3 can be a convex surface.

[0242] Referring to FIGS. 20 and 21, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the image side along the third optical axis L3. In the zooming process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 20 and 22, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0243] Table 3.1 shows the optical parameters of each lens and reflecting element in the optical lens 20 provided in Embodiment Three of the present application.

[0244] Table 3.1

[0245] Wherein, G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0246] The specific schematic can be referred to in Example One, and the meaning of the radius of curvature, thickness, material and other parameters can also be referred to in Example One, which will not be described in detail in this embodiment.

[0247] Table 3.2 shows the aspheric coefficients of each lens in the optical lens 20 provided in Example Three.

[0248] Table 3.2

[0249] As can be seen from Table 3.2, each lens in the first lens 201 and the second lens 202 is an aspheric lens, that is, the optical lens 20 includes 16 aspheric surfaces, and the aspheric surface type Z of each lens in the optical lens 20 can be calculated by the above aspheric formula (1).

[0250] Table 3.3 shows the focal length of each lens and lens group in the optical lens 20 provided in Example Three.

[0251] Table 3.3

[0252] The optical lens 20 can realize the characteristics of small volume and large target surface by using the above lenses, and the optical parameters of the optical lens 20 composed of the above lenses can be referred to in Table 3.4.

[0253] Table 3.4 shows the optical parameters of the optical lens provided in Example Three.

[0254] Table 3.4

[0255] Wherein, the abscissa in FIG. 23, FIG. 24 and FIG. 25 represents different frequencies, the ordinate represents the modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and the diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from FIG. 23, FIG. 24 and FIG. 25, the optical lens provided in the embodiment can realize high-quality imaging at the first focal length and the second focal length.

[0256] Embodiment Four

[0257] In the embodiments of the present application, the first lens group 21 can include a first lens 211 and a second lens 212 having optical power, and the first lens 211 and the second lens 212 are arranged in sequence along the first optical axis L1 from the object side to the image side; the second lens group 22 can include a third lens 221 and a fourth lens 222 having optical power, and the third lens 221 and the fourth lens 222 are arranged in sequence along the second optical axis L2 from the object side to the image side; the third lens group 23 can include a fifth lens 231, a sixth lens 232 and a seventh lens 233 having optical power, and the fourth lens group 24 can include an eighth lens 241, a ninth lens 242 and a tenth lens 243 having optical power, and the fifth lens 231, the sixth lens 232, the seventh lens 233, the eighth lens 241, the ninth lens 242 and the tenth lens 243 are arranged in sequence along the third optical axis L3. The first reflecting element 28 has one reflecting surface, and the second reflecting element 29 has two reflecting surfaces.

[0258] In the embodiments of the present application, the first lens group 21 can include a first lens 211 and a second lens 212 having optical power, and the first lens 211 and the second lens 212 are arranged in sequence along the first optical axis L1 from the object side to the image side; the second lens group 22 can include a third lens 221 and a fourth lens 222 having optical power, and the third lens 221 and the fourth lens 222 are arranged in sequence along the second optical axis L2 from the object side to the image side; the third lens group 23 can include a fifth lens 231, a sixth lens 232 and a seventh lens 233 having optical power, and the fourth lens group 24 can include an eighth lens 241, a ninth lens 242 and a tenth lens 243 having optical power, and the fifth lens 231, the sixth lens 232, the seventh lens 233, the eighth lens 241, the ninth lens 242 and the tenth lens 243 are arranged in sequence along the third optical axis L3. The first reflecting element 28 has one reflecting surface, and the second reflecting element 29 has two reflecting surfaces.

[0259] In the embodiments of the present application, the first lens group 21 can include a first lens 211 and a second lens 212 having optical power, and the first lens 211 and the second lens 212 are arranged in sequence along the first optical axis L1 from the object side to the image side; the second lens group 22 can include a third lens 221 and a fourth lens 222 having optical power, and the third lens 221 and the fourth lens 222 are arranged in sequence along the second optical axis L2 from the object side to the image side; the third lens group 23 can include a fifth lens 231, a sixth lens 232 and a seventh lens 233 having optical power, and the fourth lens group 24 can include an eighth lens 241, a ninth lens 242 and a tenth lens 243 having optical power, and the fifth lens 231, the sixth lens 232, the seventh lens 233, the eighth lens 241, the ninth lens 242 and the tenth lens 243 are arranged in sequence along the third optical axis L3. The first reflecting element 28 has one reflecting surface, and the second reflecting element 29 has two reflecting surfaces.

[0260] In the embodiments of the present application, the first lens group 21 can include a first lens 211 and a second lens 212 having optical power, and the first lens 211 and the second lens 212 are arranged in sequence along the first optical axis L1 from the object side to the image side; the second lens group 22 can include a third lens 221 and a fourth lens 222 having optical power, and the third lens 221 and the fourth lens 222 are arranged in sequence along the second optical axis L2 from the object side to the image side; the third lens group 23 can include a fifth lens 231, a sixth lens 232 and a seventh lens 233 having optical power, and the fourth lens group 24 can include an eighth lens 241, a ninth lens 242 and a tenth lens 243 having optical power, and the fifth lens 231, the sixth lens 232, the seventh lens 233, the eighth lens 241, the ninth lens 242 and the tenth lens 243 are arranged in sequence along the third optical axis L3. The first reflecting element 28 has one reflecting surface, and the second reflecting element 29 has two reflecting surfaces.

[0261] The optical power of the fourth lens group 24 is negative. Specifically, the object side surface of the eighth lens 241 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the eighth lens 241 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the ninth lens 242 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the ninth lens 242 corresponding to at least the third optical axis L3 can be a convex surface. The object side surface of the tenth lens 243 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the tenth lens 243 corresponding to at least the third optical axis L3 can be a convex surface.

[0262] Referring to FIGS. 26 and 27, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 moves towards the object side along the first optical axis L1, the third lens group 23 moves towards the object side along the third optical axis L3, and the fourth lens group 24 is fixed. In the process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 26 and 28, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 moves towards the object side along the second optical axis L2, the third lens group 23 moves towards the image side along the third optical axis L3, and the fourth lens group 24 is fixed.

[0263] Table 4.1 shows the optical parameters of each lens and reflecting element in the optical lens 20 provided in Embodiment Four.

[0264] Table 4.1

[0265] G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0266] S1 and S2 are the object side and image side of the first lens 211 respectively, S3 and S4 are the object side and image side of the second lens 212 respectively, S5 and S6 are the object side and image side of the third lens 221 respectively, S7 and S8 are the object side and image side of the fourth lens 222 respectively, S9 and S10 are the object side and image side of the first reflecting element 28 respectively, S11 and S12 are the object side and image side of the fifth lens 231 respectively, S13 and S14 are the object side and image side of the sixth lens 232 respectively, S15 and S16 are the object side and image side of the seventh lens 233 respectively, S17 and S18 are the object side and image side of the eighth lens 241 respectively, S19 and S20 are the object side and image side of the ninth lens 242 respectively, S21 and S22 are the object side and image side of the tenth lens 243 respectively, S23 and S24 are the object side and image side of one reflecting surface in the second reflecting element 29 respectively, S25 and S26 are the object side and image side of the other reflecting surface in the second reflecting element 29 respectively.

[0267] The significance of the parameters such as the radius of curvature, thickness and material can also be referred to in Embodiment One, which will not be described herein again.

[0268] Table 4.2 shows the aspheric coefficients of each lens in the optical lens 20 provided in Embodiment Four.

[0269] Table 4.2

[0270] As can be seen from Table 4.2, each lens in the first lens 201 and the second lens 202 is an aspheric lens, that is, the optical lens 20 includes 16 aspheric surfaces, and the aspheric surface type Z of each lens in the optical lens 20 can be calculated by the aspheric formula (1) above.

[0271] Table 4.3 shows the focal lengths of each lens and lens group in the optical lens 20 provided in Embodiment Four.

[0272] Table 4.3

[0273] The optical lens 20 can realize the characteristics such as small volume and large target surface by adopting the lenses above and the matching of the number of lenses, the focal length, thickness, refractive index and Abbe number of each lens. The optical parameters of the optical lens 20 composed of the lenses above can be referred to in Table 4.4 below.

[0274] Table 4.4 shows the optical parameters of the optical lens provided in Embodiment Four.

[0275] Table 4.4

[0276] In FIG. 29, FIG. 30 and FIG. 31, the abscissa represents different frequencies, the ordinate represents modulation contrast, the solid line in the figure represents tangential field of view, the dotted line in the figure represents meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal point. The closer to the diff. limit curve, the better the imaging quality. As shown in FIG. 29, FIG. 30 and FIG. 31, the optical lens 20 provided in the embodiment can realize high-quality imaging under the first focal segment and the second focal segment.

[0277] Embodiment Five

[0278] In the embodiment, referring to FIG. 32 to FIG. 34, the first lens group 21 can include a first lens 211 with optical power, the second lens group 22 can include a second lens 221 with optical power, the third lens group 23 can include a third lens 231, a fourth lens 232 and a fifth lens 233 with optical power, the fifth lens group 25 can include a sixth lens 251, a seventh lens 252 and an eighth lens 253 with optical power, and the fourth lens group 24 can include a ninth lens 241, a tenth lens 242 and an eleventh lens 243 with optical power. The third lens 231, the fourth lens 232, the fifth lens 233, the sixth lens 251, the seventh lens 252, the eighth lens 253, the ninth lens 241, the tenth lens 242 and the eleventh lens 243 are arranged in sequence along the third optical axis L3. The first reflective element 28 has one reflecting surface, and the second reflective element 29 has one reflecting surface.

[0279] In the embodiment, the optical power of the first lens group 21 is positive. Specifically, at least the part corresponding to the first optical axis L1 of the object side surface of the first lens 211 can be a convex surface, and at least the part corresponding to the first optical axis L1 of the image side surface of the first lens 211 can be a convex surface.

[0280] In the embodiment, the optical power of the second lens group 22 is positive. Specifically, at least the part corresponding to the second optical axis L2 of the object side surface of the second lens 221 can be a convex surface, and at least the part corresponding to the second optical axis L2 of the image side surface of the second lens 221 can be a concave surface.

[0281] The optical power of the third lens group 23 is positive. Specifically, the object side surface of the third lens 231 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the third lens 231 can be convex at least in the portion corresponding to the third optical axis L3. The object side surface of the fourth lens 232 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the fourth lens 232 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the fifth lens 233 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the fifth lens 233 can be concave at least in the portion corresponding to the third optical axis L3.

[0282] The optical power of the fifth lens group 25 is positive. Specifically, the object side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the sixth lens 251 can be convex at least in the portion corresponding to the third optical axis L3. The object side surface of the seventh lens 252 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the eighth lens 253 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the eighth lens 253 can be concave at least in the portion corresponding to the third optical axis L3.

[0283] The optical power of the fourth lens group 24 is negative. Specifically, the object side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the eighth lens 253 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the eighth lens 253 can be convex at least in the portion corresponding to the third optical axis L3.

[0284] Referring to FIGS. 32 and 33, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 is fixed. In the zooming process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 32 and 34, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the image side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0285] Table 5.1 shows optical parameters of each lens and reflective element in the optical lens 20 provided by the embodiment five of the present application.

[0286] Table 5.1

[0287] Wherein, G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, G5 is the fifth lens group 25, A1 is the first reflective element 28, and A2 is the second reflective element 29.

[0288] S1 and S2 are the object side and image side of the first lens 211 respectively, S3 and S4 are the object side and image side of the second lens 221 respectively, S5 and S6 are the object side and image side of the first reflective element 28 respectively, S7 and S8 are the object side and image side of the third lens 231 respectively, S9 and S10 are the object side and image side of the fourth lens 232 respectively, S11 and S12 are the object side and image side of the fifth lens 233 respectively, S13 and S14 are the object side and image side of the sixth lens 251 respectively, S15 and S16 are the object side and image side of the seventh lens 252 respectively, S17 and S18 are the object side and image side of the eighth lens 253 respectively, S19 and S20 are the object side and image side of the ninth lens 241 respectively, S21 and S22 are the object side and image side of the tenth lens 242 respectively, S23 and S24 are the object side and image side of the eleventh lens 243 respectively, and S25 and S26 are the object side and image side of the second reflective element 29 respectively.

[0289] The meanings of the parameters such as the radius of curvature, thickness and material can be referred to the embodiment one, which will not be described herein again.

[0290] Table 5.2 shows aspherical coefficients of each lens in the optical lens 20 provided by the embodiment five of the present application.

[0291] Table 5.2

[0292] As shown in Table 5.2, each lens in the first lens 201 and the second lens 202 is an aspherical lens, that is, the optical lens 20 includes 16 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 20 can be calculated by the aspherical surface formula (1).

[0293] Table 5.3 shows focal lengths of each lens and lens group in the optical lens 20 provided by the embodiment five of the present application.

[0294] Table 5.3

[0295] The optical lens 20 can realize the characteristics of small volume and large target surface by adopting the above lenses, and the number of lenses, and the matching of focal length, thickness, refractive index, Abbe number, etc. of each lens. The optical parameters of the optical lens 20 composed of the above lenses can be seen from Table 5.4.

[0296] Table 5.4 shows the optical parameters of an optical lens provided in the fifth embodiment of the present application.

[0297] Table 5.4

[0298] In FIGS. 35, 36 and 37, the abscissa represents different frequencies, the ordinate represents the modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 35, 36 and 37, the optical lens provided in the embodiment can realize high-quality imaging under the first focal segment and the second focal segment.

[0299] Embodiment six

[0300] In the embodiments of the present application, referring to FIGS. 38 to 40, the lens group of the first lens group 21, the second lens group 22, the third lens group 23, the fifth lens group 25, the fourth lens group 24 and the first reflecting element 2 can refer to the fifth embodiment. The difference between the embodiments of the present application and the fifth embodiment is that:

[0301] Specifically, the object side surface of the first lens 211 can be a convex surface corresponding to at least the first optical axis L1, and the image side surface of the first lens 211 can be a convex surface corresponding to at least the first optical axis L1.

[0302] Specifically, the object side surface of the second lens 221 can be a convex surface corresponding to at least the second optical axis L2, and the image side surface of the second lens 221 can be a concave surface corresponding to at least the second optical axis L2.

[0303] The optical power of the third lens group 23 is positive. Specifically, the object side surface of the third lens 231 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the third lens 231 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the fourth lens 232 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the fourth lens 232 can be convex at least in the portion corresponding to the third optical axis L3. The object side surface of the fifth lens 233 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the fifth lens 233 can be concave at least in the portion corresponding to the third optical axis L3.

[0304] The optical power of the fifth lens group 25 is positive. Specifically, the object side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the sixth lens 251 can be convex at least in the portion corresponding to the third optical axis L3. The object side surface of the seventh lens 252 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the eighth lens 253 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the eighth lens 253 can be concave at least in the portion corresponding to the third optical axis L3.

[0305] The optical power of the fourth lens group 24 is negative. Specifically, the object side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the sixth lens 251 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the seventh lens 252 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the eighth lens 253 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the eighth lens 253 can be convex at least in the portion corresponding to the third optical axis L3.

[0306] Referring to FIGS. 38 and 39, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3. In the process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 38 and 40, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0307] Table 6.1 shows optical parameters of each lens and reflective element in the optical lens 20 provided in Embodiment Six of the present application.

[0308] Table 6.1

[0309] In the table, G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, G5 is the fifth lens group 25, A1 is the first reflective element 28, and A2 is the second reflective element 29.

[0310] The meanings of S1-S26 can be referred to Embodiment Five, which will not be repeated in this embodiment. The meanings of the parameters such as the radius of curvature, the thickness, and the material can also be referred to Embodiment One, which will not be repeated in this embodiment.

[0311] Table 6.2 shows aspherical coefficients of each lens in the optical lens 20 provided in Embodiment Six of the present application.

[0312] Table 6.2

[0313] As can be seen from Table 6.2, each lens in the first lens 201 and the second lens 202 is an aspherical lens, that is, the optical lens 20 includes 16 aspherical surfaces. The aspherical surface type Z of each lens in the optical lens 20 can be calculated by the aspherical surface formula (1) above.

[0314] Table 6.3 shows focal lengths of each lens and lens group in the optical lens 20 provided in Embodiment Six of the present application.

[0315] Table 6.3

[0316] The optical lens 20 can realize the characteristics such as small volume and large target surface by using the lenses above and the matching of the number of lenses, the focal length, the thickness, the refractive index, and the Abbe number of each lens. The optical parameters of the optical lens 20 composed of the lenses above can be referred to Table 6.4 below.

[0317] Table 6.4 shows optical parameters of the optical lens provided in Embodiment Six of the present application.

[0318] Table 6.4

[0319] In the figures, the abscissa represents different frequencies, the ordinate represents the modulation contrast, the solid line in the figure represents the tangential field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 41, 42 and 43, the optical lens provided in the embodiment can achieve high-quality imaging under the first focal segment and the second focal segment.

[0320] Embodiment Seven

[0321] In the embodiment, referring to FIGS. 44 to 46, the lens groups of the first lens group 21, the second lens group 22, the third lens group 23, the fifth lens group 25, the fourth lens group 24 and the first reflecting element 2 can refer to those in Embodiment Five. In the embodiment, the difference from Embodiment Five is that:

[0322] In the embodiment, the optical power of the first lens group 21 is positive. Specifically, the object side surface of the first lens 211 can be convex at least in the portion corresponding to the first optical axis L1, and the image side surface of the first lens 211 can be convex at least in the portion corresponding to the first optical axis L1.

[0323] In the embodiment, the optical power of the second lens group 22 is positive. Specifically, the object side surface of the second lens 221 can be convex at least in the portion corresponding to the second optical axis L2, and the image side surface of the second lens 221 can be convex at least in the portion corresponding to the second optical axis L2.

[0324] In the embodiment, the optical power of the third lens group 23 is positive. Specifically, the object side surface of the third lens 231 can be convex at least in the portion corresponding to the third optical axis L3, and the image side surface of the third lens 231 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the fourth lens 232 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the fourth lens 232 can be concave at least in the portion corresponding to the third optical axis L3. The object side surface of the fifth lens 233 can be concave at least in the portion corresponding to the third optical axis L3, and the image side surface of the fifth lens 233 can be concave at least in the portion corresponding to the third optical axis L3.

[0325] The optical power of the fifth lens group 25 is positive. Specifically, the object side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a convex surface. The object side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface.

[0326] The optical power of the fourth lens group 24 is negative. Specifically, the object side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a convex surface.

[0327] Referring to FIGS. 44 and 45, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3. In the zooming process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 44 and 46, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0328] Table 7.1 shows the optical parameters of each lens and reflecting element in the optical lens 20 provided in the embodiment seven of the present application.

[0329] Table 7.1

[0330] G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, G5 is the fifth lens group 25, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0331] The meanings of S1-S26 can be referred to Embodiment Five, which will not be repeated in this embodiment. The meanings of the radius of curvature, thickness, material and the like can also be referred to Embodiment One, which will not be repeated in this embodiment.

[0332] Table 7.2 shows the aspheric coefficients of each lens in the optical lens 20 provided in Embodiment Seven of the present application.

[0333] Table 7.2

[0334] As can be seen from Table 7.2, each lens in the first lens 201 and the second lens 202 is an aspheric lens, that is, the optical lens 20 includes 16 aspheric surfaces. The aspheric surface type Z of each lens in the optical lens 20 can be calculated by the aspheric surface formula (1) above.

[0335] Table 7.3 shows the focal lengths of each lens and lens group in the optical lens 20 provided in Embodiment Seven of the present application.

[0336] Table 7.3

[0337] The optical lens 20 can realize the characteristics of small volume and large target surface by using the lenses above and the matching of the number of lenses, the focal length, the thickness, the refractive index, the Abbe number and the like of each lens. The optical parameters of the optical lens 20 composed of the lenses above can be referred to Table 7.4 below.

[0338] Table 7.4 shows the optical parameters of the optical lens provided in Embodiment Seven of the present application.

[0339] Table 7.4

[0340] In FIGS. 47, 48 and 49, the abscissa represents different frequencies, the ordinate represents the modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 47, 48 and 49, the optical lens provided in the embodiment can realize high-quality imaging at the first focal length and the second focal length.

[0341] Embodiment Eight

[0342] In the embodiment of the present application, referring to FIGS. 50 to 52, the lens groups of the first lens group 21, the second lens group 22, the third lens group 23, the fifth lens group 25, the fourth lens group 24 and the first reflecting element 2 can refer to the embodiment five. In the embodiment of the present application, the difference from the embodiment five is that:

[0343] The power of the first lens group 21 is positive. Specifically, the object side surface of the first lens 211 corresponding to at least the first optical axis L1 can be a convex surface, and the image side surface of the first lens 211 corresponding to at least the first optical axis L1 can be a convex surface.

[0344] The power of the second lens group 22 is positive. Specifically, the object side surface of the second lens 221 corresponding to at least the second optical axis L2 can be a convex surface, and the image side surface of the second lens 221 corresponding to at least the second optical axis L2 can be a convex surface.

[0345] The power of the third lens group 23 is positive. Specifically, the object side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the third lens 231 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the fourth lens 232 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the fifth lens 233 corresponding to at least the third optical axis L3 can be a concave surface.

[0346] The power of the fifth lens group 25 is positive. Specifically, the object side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a convex surface. The object side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a convex surface, and the image side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface.

[0347] The optical power of the fourth lens group 24 is negative. Specifically, the object side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the sixth lens 251 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the seventh lens 252 corresponding to at least the third optical axis L3 can be a concave surface. The object side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a concave surface, and the image side surface of the eighth lens 253 corresponding to at least the third optical axis L3 can be a convex surface.

[0348] Referring to FIGS. 50 and 51, in the process of switching the optical lens 20 from the medium-long focal state to the macro state, the first lens group 21 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 is fixed. In the process of switching the optical lens 20 from the first focal segment to the second focal segment, the first reflecting element 28 moves along the third optical axis L3. Referring to FIGS. 50 and 52, in the process of switching the optical lens 20 from the medium-long focal state to the super-long focal state, the second lens group 22 is fixed, the third lens group 23 moves towards the object side along the third optical axis L3, the fifth lens group 25 moves towards the object side along the third optical axis L3, and the fourth lens group 24 moves towards the object side along the third optical axis L3.

[0349] Table 8.1 shows the optical parameters of the lenses and reflecting elements in the optical lens 20 provided in the eighth embodiment of the present application.

[0350] Table 8.1

[0351] G1 is the first lens group 21, G2 is the second lens group 22, G3 is the third lens group 23, G4 is the fourth lens group 24, G5 is the fifth lens group 25, A1 is the first reflecting element 28, and A2 is the second reflecting element 29.

[0352] The meanings of S1-S26 can be referred to the fifth embodiment, which will not be repeated in the present embodiment. The meanings of the parameters such as the curvature radius, the thickness and the material can also be referred to the first embodiment, which will not be repeated in the present embodiment.

[0353] Table 8.2 shows the aspheric coefficients of the lenses in the optical lens 20 provided in the eighth embodiment of the present application.

[0354] Table 8.2

[0355] As shown in Table 8.2, each lens in the first lens 201 and the second lens 202 is an aspherical lens, that is, the optical lens 20 includes 16 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 20 can be calculated by the aspherical surface formula (1).

[0356] Table 8.3 shows the focal length of each lens and lens group in the optical lens 20 provided in Embodiment Eight.

[0357] Table 8.3

[0358] The optical lens 20 can realize the characteristics of small volume and large target surface by using the above lenses, and the focal length, thickness, refractive index, Abbe number, etc. of each lens. The optical parameters of the optical lens 20 composed of the above lenses can be seen from Table 8.4.

[0359] Table 8.4 shows the optical parameters of the optical lens provided in Embodiment Eight.

[0360] Table 8.4

[0361] In the figures, the horizontal coordinate represents different frequencies, the vertical coordinate represents the modulation contrast, the solid line in the figure represents the sagittal field of view, the dotted line in the figure represents the meridional field of view, and diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point. The closer to the diff. limit curve, the better the imaging quality. As shown in Figures 53, 54 and 55, the optical lens 20 provided in the embodiment can realize high-quality imaging at the first focal length and the second focal length.

[0362] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An optical lens characterized in that, Comprising: a first lens, a first reflecting element, and a second lens, the first lens comprising a first lens group and a second lens group, the first lens group and the second lens group both having positive refractive powers, an optical axis of the first lens group being a first optical axis, and an optical axis of the second lens group being a second optical axis, the first optical axis being parallel to the second optical axis; the second lens comprising a third lens group and a fourth lens group, the third lens group and the fourth lens group both having an optical axis being a third optical axis, and the first optical axis and the second optical axis both being perpendicular to the third optical axis; in a zooming process of switching between a first focal length and a second focal length, the first reflecting element is configured to move along the third optical axis between the first lens and the second lens; when the optical lens is at the first focal length, in a direction from an object side to an image side along the first optical axis and the third optical axis, there are sequentially arranged the first lens group, the first reflecting element, the third lens group, and the fourth lens group, the first reflecting element is configured to turn the optical path from the first lens group towards the third lens group and the fourth lens group, and at least two lens groups in the first lens and the second lens are configured to move along the optical axis; when the optical lens is at the second focal length, in a direction from the object side to the image side along the second optical axis and the third optical axis, there are sequentially arranged the second lens group, the first reflecting element, the third lens group, and the fourth lens group, the first reflecting element is configured to turn the optical path from the second lens group towards the third lens group and the fourth lens group, and at least two lens groups in the first lens and the second lens are configured to move along the optical axis.

2. The optical lens according to claim 1, wherein when the optical lens is at the first focal length, an effective focal length of the optical lens is EFL1, and a ratio of a focal length f1 of the first lens group to EFL1 satisfies 0.2 < f1 / EFL1 < 5.

3. The optical lens according to claim 1 or 2, wherein when the optical lens is at the second focal length, an effective focal length of the optical lens is EFL2, and a ratio of a focal length f2 of the second lens group to EFL2 satisfies 0.2 < f2 / EFL2 < 2.

5.

4. The optical lens of any of claims 1-3, wherein, the first focal length comprises a macro state, and when the optical lens is at the macro state, a magnification of the optical lens ranges from 0.1 to 0.

5.

5. The optical lens of any of claims 1-4, wherein, the third lens group has a positive refractive power, and the fourth lens group has a negative refractive power.

6. The optical lens of any of claims 1-5, wherein, the second lens further comprises a fifth lens group, the fifth lens group is located between the third lens group and the fourth lens group, and the third optical axis is an optical axis of the fifth lens group; when the optical lens is at the first focal length, in a direction from the object side to the image side along the first optical axis and the third optical axis, there are sequentially arranged the first lens group, the first reflecting element, the third lens group, the fifth lens group, and the fourth lens group. The optical lens is in the second focal segment, and the second lens group, the first reflecting element, the third lens group, the fifth lens group and the fourth lens group are arranged in sequence along the second optical axis and the third optical axis from the object side to the image side.

7. The optical lens of claim 6, wherein, The third lens group has positive refractive power, the fourth lens group has negative refractive power, and the fifth lens group has positive refractive power.

8. The optical lens according to claim 6 or 7, characterized in that, The number of the fifth lens group is multiple.

9. The optical lens of any of claims 1-8, wherein, The distance between the lens group of the first lens and the first reflecting element when the optical lens is in the non-working state is less than the distance between the lens group of the first lens and the first reflecting element when the optical lens is in the working state; during the switching process from the non-working state to the working state, the lens group of the first lens moves along the first optical axis.

10. The optical lens of any of claims 1-9, wherein, The third lens group has positive refractive power, and the distance between the third lens group and the first reflecting element when the optical lens is in the first focal segment is less than the distance between the third lens group and the first reflecting element when the optical lens is in the second focal segment. The fourth lens group has negative refractive power, and the distance between the fourth lens group and the optical sensor when the optical lens is in the first focal segment is less than or equal to the distance between the fourth lens group and the optical sensor when the optical lens is in the second focal segment; the optical sensor is located on the image side of the fourth lens group.

11. The optical lens of claim 10, wherein, When the optical lens is in the first focal segment, the first lens group is configured to move along the first optical axis, and at least one lens group in the second lens is configured to move along the third optical axis. Alternatively, the first lens group is configured to be fixed, and at least two lens groups in the second lens are configured to move along the third optical axis.

12. The optical lens of claim 11, wherein, The first focal segment includes a macro state and a medium-long focal state, and during the switching process from the medium-long focal state to the macro state, the third lens group moves towards the object side along the third optical axis.

13. The optical lens of claim 12, wherein, During the switching process from the medium-long focal state to the macro state, the first lens group is fixed, and the fourth lens group moves towards the object side along the third optical axis; or the first lens group moves towards the object side along the first optical axis, and the fourth lens group moves towards the image side along the third optical axis.

14. The optical lens of claim 12, wherein, The second lens further includes a fifth lens group; during the switching process from the medium-long focal state to the macro state, the first lens group is fixed; the fourth lens group moves towards the object side along the third optical axis, or the fourth lens group is fixed; and the fifth lens group moves towards the object side along the third optical axis.

15. The optical lens of claim 10, wherein, The optical lens is in the second focal segment, and the second lens group is configured to move along the second optical axis, and at least one lens group in the second lens is configured to move along the third optical axis. Alternatively, the second lens group is configured to be fixed, and at least two lens groups in the second lens are configured to move along the third optical axis.

16. The optical lens of claim 15, wherein, The first focal length section includes a macro state and a medium telephoto state, the second focal length section includes a super telephoto state, during switching from the medium telephoto state to the super telephoto state, the second lens group moves along the second optical axis to the object side, the third lens group moves along the third optical axis to the image side, and the fourth lens group is fixed.

17. The optical lens of claim 15, wherein, The first focal length section includes a macro state and a medium telephoto state, the second focal length section includes a super telephoto state, during switching from the medium telephoto state to the super telephoto state, the second lens group is fixed, the third lens group moves along the third optical axis to the object side, and the fourth lens group moves along the third optical axis to the object side.

18. The optical lens of claim 17, wherein, The second lens further includes a fifth lens group, during switching from the medium telephoto state to the super telephoto state, the fifth lens group moves along the third optical axis to the object side.

19. The optical lens of any of claims 1-18, wherein, The optical lens further includes a second reflective element, the second reflective element is located on the image side of the fourth lens group, the second reflective element has at least one reflecting surface, and the second reflective element is configured to reflect the light path from the fourth lens group to the image side of the second reflective element at least once.

20. A lens module, characterized by, An optical sensor is located on the image side of the lens module, the optical lens is used to project an image onto the optical sensor, and the optical sensor is used to convert the image into digital image data.

21. An electronic device, comprising: The lens module includes: A housing and the lens module of claim 20 are arranged on the housing.

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