Optical lens, camera module, and electronic device

Abstract

An optical lens (11), a camera module, and an electronic device, for use in achieving a miniaturized zoom optical lens having a large zoom ratio. The optical lens (11) comprises a first refractive element (31), a first zoom lens group (21), and a second zoom lens group (22) which are sequentially arranged. The first zoom lens group (21) comprises a first lens group (110) having a first optical axis (a1) and a second lens group (120) having a second optical axis (a2). At least one of the first lens group (110) and the second lens group (120) is arranged on a light incident side of the first refractive element (31). The first lens group (110) can move in a direction perpendicular to the first optical axis (a1), and the second lens group (120) can move in a direction perpendicular to the second optical axis (a2), thereby changing the focal length of the optical lens (11). The second zoom lens group (22) comprises a third lens group (130) having a third optical axis (a3). The third lens group (130) can move along the third optical axis (a3) to change the distance between the third lens group (130) and the first refractive element (31), so that an optical path distance of light emitted from the first refractive element (31) and incident to the third lens group (130) can be changed, thereby changing the focal length of the optical lens (11).

Description

Optical lens, camera module and electronic device

[0001] The present application claims priority to the Chinese Patent Application No. 202411352342.X, filed on September 25, 2024, and entitled "Optical lens, camera module and electronic device", and the Chinese Patent Application No. 202411554502.9, filed on October 31, 2024, and entitled "Optical lens, camera module and electronic device", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the field of camera technology, and in particular to an optical lens, a camera module and an electronic device. BACKGROUND

[0003] With the development of electronic devices, people's requirements for photography are also getting higher and higher. In order to meet people's photography experience, zoom lenses are gradually applied to electronic devices.

[0004] However, due to the large size of the zoom lens and the size limitation of the electronic device, the application of the zoom lens is limited. SUMMARY

[0005] The present application provides an optical lens, a camera module and an electronic device, which are used to realize a small-sized optical lens with a large zoom ratio.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides an optical lens, comprising a first light folding member, a first zoom lens group arranged on the light incident side of the first light folding member, and a second zoom lens group arranged on the light exit side of the first light folding member. The first zoom lens group comprises a first lens group having a first optical axis and a second lens group having a second optical axis, and the first optical axis and the second optical axis are parallel. At least one of the first lens group and the second lens group is arranged on the light incident side of the first light folding member. At least one of the first lens group and the second lens group is movable along a direction perpendicular to the first optical axis. The second zoom lens group comprises a third lens group having a third optical axis, and the first optical axis and the second optical axis are perpendicular to the third optical axis. The third lens group is movable along the third optical axis to change the distance between the third lens group and the first light folding member, so that the light path distance of the light emitted from the first light folding member to the third lens group changes, and thus the focal length of the optical lens changes. When the first lens group or the second lens group is located on the light incident side of the first light folding member, the first lens group and the second lens group do not overlap along the direction of the first optical axis.

[0008] The optical lens provided in the embodiments of the present application can effectively control the contribution of the first zoom lens group and the second zoom lens group to the zoom ratio of the optical lens, change the focal length of the optical lens, and realize large zoom ratio zooming by at least one of changing the refractive power of the lens group in the first zoom lens group on the light entrance side of the first light folding member and moving the lens group in the second zoom lens group. In addition, by controlling whether at least part of the lens group in the first zoom lens group is arranged on the optical path and controlling the movement of at least part of the lens group in the second zoom lens group along the optical axis, the zoom ratio of the optical lens can be increased, and the optical lens can meet different shooting scenes and shooting requirements, thereby increasing the application of the optical lens.

[0009] The optical lens provided in the embodiments of the present application can effectively utilize space, has a smaller size, higher zoom color consistency, lower cost, and improved optical competitiveness. In addition, the scheme provided in the embodiments of the present application is simple and has low complexity.

[0010] In a possible implementation, at least one of the first lens group and the second lens group moves in a direction perpendicular to the first optical axis from the light entrance side of the first light folding member toward the image side of the optical lens, or moves from the image side of the optical lens toward the light entrance side of the first light folding member. In this way, the lens group in the first zoom lens group that is not located on the optical path does not occupy the size of the optical lens, and the size of the optical lens can be reduced.

[0011] In a possible implementation, the first lens group has positive refractive power, and the second lens group has positive refractive power; when the optical lens is in the first state, the first lens group and the second lens group are located on the light entrance side of the first light folding member, and the first optical axis and the second optical axis coincide; the focal length of the first zoom lens group located on the light entrance side of the first light folding member is fw1, and the focal length of the optical lens is fw; when the optical lens is in the second state, the second lens group is located on the light entrance side of the first light folding member; the focal length of the first zoom lens group located on the light entrance side of the first light folding member is ft1, and the focal length of the optical lens is ft; wherein ft>fw, and ft1>fw1. In this way, an implementation of the optical lens is provided. By controlling the movement of the first lens group in the direction perpendicular to the first optical axis, the contribution of the first zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens can be increased.

[0012] In a possible implementation, the first lens group has negative refractive power, and the second lens group has positive refractive power; when the optical lens is in the first state, the second lens group is located on the light entrance side of the first light folding member; when the optical lens is in the second state, the first lens group and the second lens group are located on the light entrance side of the first light folding member, and the first optical axis and the second optical axis coincide. In this way, an implementation of the optical lens is provided. By controlling the movement of the first lens group in the direction perpendicular to the first optical axis, the contribution of the first zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens can be increased.

[0013] In a possible implementation, the first lens group has positive refractive power, and the second lens group has positive refractive power; when the optical lens is in the first state, the second lens group is located on the light-incoming side of the first light-turning piece; and when the optical lens is in the second state, the first lens group is located on the light-incoming side of the first light-turning piece. In this way, an implementation of the optical lens is provided. By controlling the movement of the first lens group and the second lens group along the direction perpendicular to the first optical axis, the contribution of the first zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens can be increased.

[0014] In a possible implementation, the second zoom lens group includes, in sequence along the third optical axis, a fourth lens group, a fifth lens group, and a third lens group; during the zooming process in which the optical lens is switched from the first state to the second state, the fifth lens group and the third lens group are both moved along the third optical axis to the direction close to the first light-turning piece; and during the zooming process in which the optical lens is switched from the second state to the first state, the fifth lens group and the third lens group are both moved along the third optical axis to the direction away from the first light-turning piece. In this way, an implementation of the optical lens is provided. By controlling the movement distance of the lens groups in the second zoom lens group, the magnification of the cascade of the first zoom lens group located on the light-incoming side of the first light-turning piece can be changed, and the contribution of the second zoom lens group to the focal length of the optical lens can be effectively controlled, which is conducive to controlling the focal length of the optical lens.

[0015] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; and the lens group farthest from the first light-turning piece in the second zoom lens group has negative refractive power. In this way, the light rays exiting through the second zoom lens group can be diffused, the target surface can be increased, and the imaging quality can be improved.

[0016] In a possible implementation, the fourth lens group has negative refractive power, the fifth lens group has positive refractive power, and the third lens has negative refractive power. In this way, an implementation of the optical lens is provided. By controlling the movement of the fifth lens group or the third lens group along the third optical axis, the contribution of the second zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens can be increased.

[0017] In a possible implementation, the fourth lens group has positive refractive power, the fifth lens group has positive refractive power, and the third lens has negative refractive power. In this way, an implementation of the optical lens is provided. By controlling the movement of the fifth lens group or the third lens group along the third optical axis, the contribution of the second zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens can be increased.

[0018] In a possible implementation, the second zoom lens group is composed of a fourth lens group, a fifth lens group and a third lens group arranged in sequence along the third optical axis; the fifth lens group is movable along the third optical axis; the fourth lens group has a negative focal power, the fifth lens group has a positive focal power, and the third lens has a negative focal power. In this way, an implementation of the optical lens is provided. By controlling the fifth lens group or the third lens group to move along the third optical axis, the contribution of the second zoom lens group to the zoom ratio of the optical lens can be changed, and the zoom ratio of the optical lens is increased.

[0019] In a possible implementation, at least one of the first lens group and the second lens group is arranged on the light-incident side of the first light folding member, including: when the optical lens is in the first state, the first lens group and the second lens group are both located on the light-incident side of the first light folding member, and the first optical axis and the second optical axis coincide; when the optical lens is in the second state, the first lens group is located on the light-incident side of the first light folding member; in the zooming process of switching the optical lens from the first state to the second state, the second lens group is moved out of the light-incident side of the first light folding member along a direction perpendicular to the first optical axis; in the zooming process of switching the optical lens from the second state to the first state, the second lens group is moved to the light-incident side of the first light folding member along a direction perpendicular to the first optical axis, so that the first optical axis and the second optical axis coincide. In this way, a zooming mode of the optical lens is provided.

[0020] In a possible implementation, at least one of the first lens group and the second lens group is arranged on the light-incident side of the first light folding member, including: when the optical lens is in the first state, the first lens group is located on the light-incident side of the first light folding member; when the optical lens is in the second state, the first lens group and the second lens group are both located on the light-incident side of the first light folding member, and the first optical axis and the second optical axis coincide; in the zooming process of switching the optical lens from the first state to the second state, the second lens group is moved to the light-incident side of the first light folding member along a direction perpendicular to the first optical axis, so that the first optical axis and the second optical axis coincide; in the zooming process of switching the optical lens from the second state to the first state, the second lens group is moved out of the light-incident side of the first light folding member along a direction perpendicular to the first optical axis. In this way, a zooming mode of the optical lens is provided.

[0021] In a possible implementation, the focal length of the first lens group and the focal length of the second lens group are different; at least one of the first lens group and the second lens group is arranged on the light-incoming side of the first light-turning piece, including: when the optical lens is in the first state, the first lens group is located on the light-incoming side of the first light-turning piece; when the optical lens is in the second state, the second lens group is located on the light-incoming side of the first light-turning piece; in the zooming process from the first state to the second state of the optical lens, the second lens group moves to the light-incoming side of the first light-turning piece along a direction perpendicular to the first optical axis, and the first lens group moves out of the light-incoming side of the first light-turning piece along the direction perpendicular to the first optical axis; in the zooming process from the second state to the first state of the optical lens, the first lens group moves to the light-incoming side of the first light-turning piece along the direction perpendicular to the first optical axis, and the second lens group moves out of the light-incoming side of the first light-turning piece along the direction perpendicular to the first optical axis. In this way, a zooming mode of the optical lens is provided.

[0022] In a possible implementation, the optical lens further includes a second light-turning piece; the second light-turning piece is located on the image side of the second zoom lens group. In this way, the second light-turning piece can make multiple turns to the light path from the second zoom lens group, which is beneficial to further reducing the size of the optical lens.

[0023] In a possible implementation, the first light-turning piece includes a prism or a reflector. In this way, by arranging the first light-turning piece, it is beneficial to avoid stacking the second zoom lens group in the direction perpendicular to the object plane, and thus it is beneficial to reduce the size of the optical lens in the direction perpendicular to the object plane.

[0024] In a possible implementation, the second light-turning piece includes a prism or a reflector. In this way, by arranging the second light-turning piece, it is beneficial to avoid stacking the second zoom lens group in the direction parallel to the object plane, and thus it is beneficial to reduce the size of the optical lens in the direction parallel to the object plane.

[0025] In a possible implementation, the first state of the optical lens is a wide-angle end of the optical lens, and the second state of the optical lens is a telephoto end of the optical lens. In this way, a zooming implementation of the optical lens is provided.

[0026] In a possible implementation, the first optical axis and the second optical axis overlap when the optical lens is in the first state or the second state. In this way, the first lens group and the second lens group are both arranged on the light-incoming side of the first light-turning piece.

[0027] In a possible implementation, the first lens group and the second lens group do not overlap in the direction of the first optical axis when the optical lens is in the first state or the second state. In this way, only the first lens group or only the second lens group is located on the light-incoming side of the first light-turning piece.

[0028] In a possible implementation, when the optical lens is at the telephoto end, the focal length of the optical lens is ft; when the optical lens is at the wide-angle end, the focal length of the optical lens is fw; and ft and fw satisfy: 1 < ft / fw ≤ 4. In this way, by reasonably allocating the focal lengths of the optical lens at the telephoto end and the wide-angle end, the application scenarios of the optical lens can be increased, and the application of the optical lens is more extensive.

[0029] In a possible implementation, when the optical lens is at the telephoto end, the focal length of the optical lens is ft; when the optical lens is at the wide-angle end, the focal length of the optical lens is fw; and ft and fw satisfy: 1.5 ≤ ft / fw ≤ 2.5. In this way, the performance of the optical lens can be better, and the imaging quality is better.

[0030] In a possible implementation, when the optical lens is at the telephoto end, the focal length of the first zoom lens group located on the light-in side of the first light-turning piece is ft1; when the optical lens is at the wide-angle end, the focal length of the first zoom lens group located on the light-in side of the first light-turning piece is fw1; and ft1 and fw1 satisfy: 1 < ft1 / fw1 ≤ 1.5. In this way, by reasonably allocating the focal lengths of the first zoom lens group located on the light-in side of the first light-turning piece at the telephoto end and the wide-angle end, the contribution of the first zoom lens group located on the light-in side of the first light-turning piece to the zoom ratio of the optical lens can be effectively controlled, the zoom ratio of the optical lens is increased, the optical lens can meet different shooting scenes and shooting requirements, and the application of the optical lens is increased.

[0031] In a possible implementation, when the optical lens is at the telephoto end, the cascade magnification of the second zoom lens group to the first zoom lens group located on the light-in side of the first light-turning piece is Mt, when the optical lens is at the wide-angle end, the cascade magnification of the second zoom lens group to the first zoom lens group located on the light-in side of the first light-turning piece is Mw, and Mt and Mw satisfy: 1.5 ≤ Mt / Mw ≤ 3.5. In this way, by reasonably allocating the cascade magnification of the optical lens at the telephoto end and the wide-angle end, the contribution of the second zoom lens group to the zoom ratio of the optical lens can be effectively controlled, the zoom ratio of the optical lens is increased, the optical lens can meet different shooting scenes and shooting requirements, and the application of the optical lens is increased.

[0032] In a possible implementation, when the optical lens is at the long focal end, the focal length of the first zoom lens group located at the light entrance side of the first light folding member is ft1, the focal length of the second lens group is f11, and ft1 and f11 satisfy: |f11 / ft1|≤28. In this way, when the focal length of the optical lens is changed by moving the lens group to the light entrance side of the first light folding member, the focal length of the first zoom lens group located at the light entrance side of the first light folding member at the long focal end is reasonably distributed, and the focal length of the lens group moved to the light entrance side of the first light folding member, which can change the contribution of the first zoom lens group located at the light entrance side of the first light folding member to the zoom ratio of the optical lens, and increase the zoom ratio of the optical lens.

[0033] In a possible implementation, when the optical lens is at the wide-angle end, the focal length of the first zoom lens group located at the light entrance side of the first light folding member is fw1, the focal length of the second lens group is f11, and fw1 and f11 satisfy: |f11 / fw1|≤30. In this way, when the focal length of the optical lens is changed by moving the lens group to the light entrance side of the first light folding member, the focal length of the first zoom lens group located at the light entrance side of the first light folding member at the wide-angle end is reasonably distributed, and the focal length of the lens group moved to the light entrance side of the first light folding member, which can change the contribution of the first zoom lens group located at the light entrance side of the first light folding member to the zoom ratio of the optical lens, and increase the zoom ratio of the optical lens.

[0034] In a possible implementation, when the optical lens is at the wide-angle end, the focal length of the optical lens is fw, and fw satisfies: 15mm≤fw≤30mm. In this way, by controlling the focal length of the optical lens at the wide-angle end, the contribution of the first zoom lens group located at the light entrance side of the first light folding member to the focal length of the optical lens at the wide-angle end can be effectively controlled, the shooting range of the optical lens is further expanded, the application scenarios of the optical lens are increased, and the application of the optical lens is more extensive.

[0035] In a possible implementation, when the optical lens is at the long focal end, the focal length of the optical lens is ft, and ft satisfies: 35mm≤ft≤55mm. In this way, by controlling the focal length of the optical lens at the long focal end, the contribution of the first zoom lens group located at the light entrance side of the first light folding member to the focal length of the optical lens at the long focal end can be effectively controlled, the shooting range of the optical lens is further expanded, the application scenarios of the optical lens are increased, and the application of the optical lens is more extensive.

[0036] In a possible implementation, when the optical lens is at the wide-angle end, the focal length of the first zoom lens group located at the light-incident side of the first light-turning piece is fw1, and fw1 satisfies 15mm≤fw1≤30mm. In this way, by controlling the focal length of the first zoom lens group located at the light-incident side of the first light-turning piece when the optical lens is at the wide-angle end, the contribution of the first zoom lens group located at the light-incident side of the first light-turning piece to the focal length of the optical lens at the wide-angle end can be effectively controlled, and thus the shooting range of the optical lens is expanded, the zoom ratio of the optical lens is increased, and the optical lens can meet different shooting scenes and shooting requirements, thereby increasing the application of the optical lens.

[0037] In a possible implementation, when the optical lens is at the long-focus end, the focal length of the first zoom lens group located at the light-incident side of the first light-turning piece is ft1, and ft1 satisfies 15mm≤ft1≤30mm. In this way, by controlling the focal length of the first zoom lens group located at the light-incident side of the first light-turning piece when the optical lens is at the long-focus end, the contribution of the first zoom lens group located at the light-incident side of the first light-turning piece to the focal length of the optical lens at the long-focus end can be effectively controlled, and thus the telephoto capability of the optical lens is expanded, the zoom ratio of the optical lens is increased, and the optical lens can meet different shooting scenes and shooting requirements, thereby increasing the application of the optical lens.

[0038] In a possible implementation, when the optical lens is at the wide-angle end, the cascade magnification of the second zoom lens group to the first zoom lens group located at the light-incident side of the first light-turning piece is Mw, and Mw satisfies 0.5≤Mw≤1.5. In this way, by controlling the cascade magnification of the optical lens when the optical lens is at the wide-angle end, the contribution of the second zoom lens group to the focal length of the optical lens can be effectively controlled, which is conducive to controlling the focal length at the wide-angle end.

[0039] In a possible implementation, when the optical lens is at the long-focus end, the cascade magnification of the second zoom lens group to the first zoom lens group located at the light-incident side of the first light-turning piece is Mt, and Mt satisfies 1.2≤Mt≤2.8. In this way, by controlling the cascade magnification of the optical lens when the optical lens is at the long-focus end, the contribution of the second zoom lens group to the focal length of the optical lens can be effectively controlled, which is conducive to controlling the focal length at the long-focus end.

[0040] In a possible implementation, the total optical length TTL of the optical lens satisfies TTL≤51mm. In this way, by controlling the total optical length of the optical lens, the miniaturization of the optical lens can be met.

[0041] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a moving distance of a lens group with the largest moving distance in the second zoom lens group is dm, a distance between the first light folding member and the second light folding member is d1, and dm and d1 satisfy: 0.25≤dm / d1≤0.9. In this way, by moving at least part of the lens groups in the second zoom lens group, the position of the lens group between the first light folding member and the second light folding member is changed, so as to change the focal length of the optical lens. In addition, by reasonably allocating the largest moving distance and the distance between the first light folding member and the second light folding member, the moving distance of each lens group in the second zoom lens group can be effectively controlled, and then the zoom ratio of the optical lens is controlled, which is beneficial to change the focal length of the optical lens.

[0042] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a moving distance of a lens group with the largest moving distance in the second zoom lens group is dm, and an imaging target surface size of the optical lens is IH, and dm and IH satisfy: dm / IH≥0.4. In this way, by controlling the relationship between the largest moving distance of the lens group in the second zoom lens group and the imaging target surface size, the zoom ratio of the optical lens can be effectively increased, so as to enable the optical lens to realize high-quality imaging.

[0043] In a possible implementation, a distance between the first light folding member and the second light folding member is d1, an imaging target surface size of the optical lens is IH, and d1 and IH satisfy: d1 / IH≤2.5. In this way, by controlling the relationship between the imaging target surface size and the distance between the first light folding member and the second light folding member, the size of the optical lens is controlled, and then the optical lens is miniaturized.

[0044] In a possible implementation, a moving distance of a lens group with the largest moving distance in the second zoom lens group is dm, and dm satisfies: 5mm≤dm≤15mm. In this way, by controlling the moving distance of the lens group in the second zoom lens group, the zoom ratio of the optical lens is increased, which is beneficial to miniaturize the optical lens.

[0045] In a possible implementation, a distance between the first light folding member and the second light folding member is d1, and d1 is less than or equal to 30mm. In this way, by controlling the distance between the first light folding member and the second light folding member, the size of the optical lens can be reasonably controlled, the zoom ratio of the optical lens is increased, and then the optical lens is miniaturized.

[0046] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; and a sum of moving distances of the lens groups in the same direction is greater than or equal to 10mm. In this way, by controlling the moving distance of the lens group in the second zoom lens group, the optical lens is miniaturized.

[0047] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a focal length of a lens group farthest from the first folding member in the second zoom lens group is f22, a focal length of the optical lens at the telephoto end is ft; f22 and ft satisfy: 2≤|ft / f22|≤8. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding member in the second zoom lens group and the focal length of the optical lens at the telephoto end, the refractive power of the lens group farthest from the first folding member in the second zoom lens group can be reasonably controlled, and then the target surface of the optical lens can be increased.

[0048] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a focal length of a lens group farthest from the first folding member in the second zoom lens group is f22, a focal length of the optical lens at the telephoto end is ft; f22 and ft satisfy: 2≤|ft / f22|≤8. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding member in the second zoom lens group and the focal length of the optical lens at the telephoto end, the refractive power of the lens group farthest from the first folding member in the second zoom lens group can be reasonably controlled, and then the target surface of the optical lens can be increased.

[0049] In a possible implementation, the optical total length of the optical lens is TTL, the imaging target surface size of the optical lens is IH, the wide-angle end field of view of the optical lens at the wide-angle end is FOVw, and the telephoto end field of view of the optical lens at the telephoto end is FOVt; TTL, IH, FOVw, and FOVt satisfy: (TTL / IH)×(FOVt / FOVw)≤2.5. In this way, by reasonably allocating the field of view of the optical lens at the wide-angle end and the telephoto end, and the relationship between the optical total length and the target surface size, the optical total length of the optical lens can be small, and the imaging target surface size can be large, which is beneficial to improve the application of the optical lens and increase the competitiveness of the optical lens.

[0050] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a focal length of a lens group farthest from the first folding member in the second zoom lens group is f22, a focal length of the optical lens at the telephoto end is ft; f22 and ft satisfy: 2≤|ft / f22|≤8. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding member in the second zoom lens group and the focal length of the optical lens at the telephoto end, the refractive power of the lens group farthest from the first folding member in the second zoom lens group can be reasonably controlled, and then the target surface of the optical lens can be increased.

[0051] The camera module provided in the second aspect of the embodiment of the present application includes the optical lens of any one of the first aspect, and has the same beneficial effects as the optical lens, which will not be repeated here.

[0052] In a possible implementation, the second zoom lens group includes a plurality of lens groups arranged along the third optical axis; a focal length of a lens group farthest from the first folding member in the second zoom lens group is f22, a focal length of the optical lens at the telephoto end is ft; f22 and ft satisfy: 2≤|ft / f22|≤8. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding member in the second zoom lens group and the focal length of the optical lens at the telephoto end, the refractive power of the lens group farthest from the first folding member in the second zoom lens group can be reasonably controlled, and then the target surface of the optical lens can be increased.

[0053] The electronic device provided in the third aspect of the embodiments of the present application comprises the camera module of the second aspect, and has the same beneficial effects as the camera module, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0054] FIG. 1 is a structural schematic diagram of an electronic device provided in the embodiments of the present application;

[0055] FIG. 2A is a structural schematic diagram of a camera module provided in the embodiments of the present application;

[0056] FIG. 2B is a structural schematic diagram of an optical lens provided in the embodiments of the present application;

[0057] FIG. 3 is a structural schematic diagram of another optical lens provided in the embodiments of the present application;

[0058] FIG. 4 is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0059] FIG. 5 is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0060] FIG. 6A is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0061] FIG. 6B is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0062] FIG. 6C is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0063] FIG. 7A is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0064] FIG. 7B is a structural schematic diagram of still another optical lens provided in the embodiments of the present application;

[0065] FIG. 8A is a simulation structural diagram of an optical lens provided in Embodiment One of the present application in a wide-angle end state;

[0066] FIG. 8B is a simulation structural diagram of an optical lens provided in Embodiment One of the present application in a long-focus end state;

[0067] FIG. 8C is a modulation transfer function curve diagram of an optical lens provided in Embodiment One of the present application in a wide-angle end state;

[0068] FIG. 8D is a modulation transfer function curve diagram of an optical lens provided in Embodiment One of the present application in a long-focus end state;

[0069] FIG. 9A is a simulation structural diagram of an optical lens provided in Embodiment Two of the present application in a wide-angle end state;

[0070] FIG. 9B is a simulation structure diagram of the optical lens in the telephoto end state according to the second embodiment of the present application;

[0071] FIG. 9C is a modulation transfer function curve diagram of the optical lens in the wide-angle end state according to the second embodiment of the present application;

[0072] FIG. 9D is a modulation transfer function curve diagram of the optical lens in the telephoto end state according to the second embodiment of the present application;

[0073] FIG. 10A is a simulation structure diagram of the optical lens in the wide-angle end state according to the third embodiment of the present application;

[0074] FIG. 10B is a simulation structure diagram of the optical lens in the telephoto end state according to the third embodiment of the present application;

[0075] FIG. 10C is a modulation transfer function curve diagram of the optical lens in the wide-angle end state according to the third embodiment of the present application;

[0076] FIG. 10D is a modulation transfer function curve diagram of the optical lens in the telephoto end state according to the third embodiment of the present application;

[0077] FIG. 11A is a simulation structure diagram of the optical lens in the wide-angle end state according to the fourth embodiment of the present application;

[0078] FIG. 11B is a simulation structure diagram of the optical lens in the telephoto end state according to the fourth embodiment of the present application;

[0079] FIG. 11C is a modulation transfer function curve diagram of the optical lens in the wide-angle end state according to the fourth embodiment of the present application;

[0080] FIG. 11D is a modulation transfer function curve diagram of the optical lens in the telephoto end state according to the fourth embodiment of the present application;

[0081] FIG. 12A is a simulation structure diagram of the optical lens in the wide-angle end state according to the fifth embodiment of the present application;

[0082] FIG. 12B is a simulation structure diagram of the optical lens in the telephoto end state according to the fifth embodiment of the present application;

[0083] FIG. 12C is a modulation transfer function curve diagram of the optical lens in the wide-angle end state according to the fifth embodiment of the present application;

[0084] FIG. 12D is a modulation transfer function curve diagram of the optical lens in the telephoto end state according to the fifth embodiment of the present application;

[0085] FIG. 13A is a simulation structure diagram of the optical lens in the wide-angle end state according to the sixth embodiment of the present application;

[0086] FIG. 13B is a simulation structure diagram of an optical lens provided by Embodiment Six of the present application in a long-focus end state;

[0087] FIG. 13C is a modulation transfer function curve diagram of an optical lens provided by Embodiment Six of the present application in a wide-angle end state;

[0088] FIG. 13D is a modulation transfer function curve diagram of an optical lens provided by Embodiment Six of the present application in a long-focus end state;

[0089] FIG. 14A is a simulation structure diagram of an optical lens provided by Embodiment Seven of the present application in a wide-angle end state;

[0090] FIG. 14B is a simulation structure diagram of an optical lens provided by Embodiment Seven of the present application in a long-focus end state;

[0091] FIG. 14C is a modulation transfer function curve diagram of an optical lens provided by Embodiment Seven of the present application in a wide-angle end state;

[0092] FIG. 14D is a modulation transfer function curve diagram of an optical lens provided by Embodiment Seven of the present application in a long-focus end state;

[0093] FIG. 15A is a simulation structure diagram of an optical lens provided by Embodiment Eight of the present application in a wide-angle end state;

[0094] FIG. 15B is a simulation structure diagram of an optical lens provided by Embodiment Eight of the present application in a long-focus end state;

[0095] FIG. 15C is a modulation transfer function curve diagram of an optical lens provided by Embodiment Eight of the present application in a wide-angle end state;

[0096] FIG. 15D is a modulation transfer function curve diagram of an optical lens provided by Embodiment Eight of the present application in a long-focus end state;

[0097] FIG. 16A is a simulation structure diagram of an optical lens provided by Embodiment Nine of the present application in a wide-angle end state;

[0098] FIG. 16B is a simulation structure diagram of an optical lens provided by Embodiment Nine of the present application in a long-focus end state;

[0099] FIG. 16C is a modulation transfer function curve diagram of an optical lens provided by Embodiment Nine of the present application in a wide-angle end state;

[0100] FIG. 16D is a modulation transfer function curve diagram of an optical lens provided by Embodiment Nine of the present application in a long-focus end state.

[0101] 1 - electronic device; 2 - display module; 3 - middle frame; 4 - shell; 5 - cover plate; 10 - camera module; 11 - optical lens; 12 - photosensitive element; 13 - optical filter; 21 - first zoom lens group; 22 - second zoom lens group; 31 - first light folding piece; 32 - second light folding piece; 110 - first lens group; 120 - second lens group; 130 - third lens group; 140 - fourth lens group; 150 - fifth lens group; 101 - first lens; 102 - second lens; 103 - third lens; 104 - fourth lens; 105 - fifth lens; 106 - sixth lens; 107 - seventh lens; 108 - eighth lens; 109 - ninth lens; 1010 - tenth lens; 1011 - eleventh lens. DETAILED DESCRIPTION

[0102] 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, not all the embodiments.

[0103] Hereinafter, the terms "second", "first", and the like are only used for description convenience, 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 "second", "first", and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0104] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left", "right", and the like can include but not limited to the orientation defined by the relative placement of the components in the drawings. It should be understood that these directional terms can be relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the placement of the components in the drawings.

[0105] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium. In addition, the term "coupling" can be direct electrical connection, or indirect electrical connection through intermediate medium. The term "contact" can be direct contact, or indirect contact through intermediate medium.

[0106] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, wherein A and B can be singular or plural. The character " / " generally represents that the front and rear associated objects have an "or" relationship.

[0107] For the convenience of understanding the technical solutions, the technical terms involved in the present application are explained below.

[0108] Light entrance side and light exit side: the range through which imaging light passes, wherein the imaging light includes chief rays and marginal rays. The light entrance side is toward the object side, and the light exit side is toward the image side. The light is transmitted from the light entrance side to the light exit side.

[0109] 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, representing the refractive ability of the optical lens to the incident parallel light bundle. The focal power is generally represented by the value of , The greater the value of , the more severe the parallel light bundle is folded. When the focal power is positive, the refraction is convergent; When the focal power is negative, the refraction is divergent. When the focal power is zero, it is a plane refraction, that is, the axial parallel light bundle remains an axial parallel light bundle after refraction, and no refraction phenomenon occurs.

[0110] Total track length (TTL): the length on the optical axis from the object-side surface of the first optical element toward the object side in the lens to the imaging surface is the total track length. That is, the total length from the lens barrel head to the imaging surface. The total track length is used to represent the size of the lens.

[0111] Aperture stop: a device for controlling the amount of light passing through the lens into the body and reaching the photosensitive surface. The aperture number F# is a relative value (the reciprocal of the relative aperture) obtained by dividing the focal length of the lens by the light diameter of the lens. The smaller the value of the aperture number F#, the more light is admitted in the same unit of time, allowing the lens to be used effectively in low-light environments. The larger the value of the aperture number F#, the smaller the depth of field, and the background will be blurred.

[0112] Focal length (f): also known as focal length, is a measure of the optical lens that measures the convergence or divergence of light, which refers to the vertical distance from the optical center of the lens or lens group to the imaging surface when an infinite scene passes through the lens or lens group to form a clear image on the imaging surface.

[0113] Effective focal length (EFL): the distance between the rear principal plane of the lens or lens group and the imaging surface. For thin lenses, the focal length is the distance from the lens center to the imaging surface.

[0114] Optical axis, is a vertical through the ideal lens center of light. With the optical axis parallel light into the convex lens, the ideal convex lens should be all the light converges in a point behind the lens, converging all the light point, that is, the focal point.

[0115] Abbe number: the Abbe number of the lens is the dispersion coefficient of the lens, which refers to the difference ratio of the refractive index of the lens at different wavelengths, used to represent the dispersion degree of the lens. Generally, the greater the refractive index of the medium, the more serious the dispersion, and the smaller the Abbe number. On the contrary, the smaller the refractive index of the medium, the lighter the dispersion, and the larger the Abbe number.

[0116] Aberration: refers to the result obtained by tracing non-paraxial rays in the lens and the result obtained by tracing paraxial rays, which deviates from the ideal condition of Gaussian optics (first-order approximation theory or paraxial rays). Aberration is divided into two categories: chromatic aberration and monochromatic aberration. Chromatic aberration is due to the fact that the refractive index of the lens material is a function of wavelength, and different wavelengths of light passing through the lens will produce chromatic dispersion due to different refractive indices. The dispersion of the refractive index of light decreasing with the increase of wavelength can be called normal dispersion, while the dispersion of the refractive index increasing with the increase of wavelength can be called negative dispersion (or abnormal dispersion). Monochromatic aberration refers to 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, astigmatism, etc., and the latter includes image field curvature, distortion, etc. Chromatic aberration includes axial chromatic aberration and off-axis chromatic aberration. Axial chromatic aberration refers to the direction along the optical axis, so the focal points of different colors of light are different because the refractive index of the lens for different wavelengths of light is different.

[0117] Object plane: simplifying the object into a point on the optical axis (object distance point), and the plane perpendicular to the optical axis passing through the point.

[0118] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings.

[0119] Embodiments of the present application provide an electronic device. The electronic device can be, for example, a consumer electronic product, a home electronic product, a vehicle-mounted electronic product, or a financial terminal product. The consumer electronic product can be, for example, a mobile phone, a tablet computer, a notebook computer, an e-book reader, a personal computer (PC), a personal digital assistant (PDA), a desktop display, a smart wearable product (for example, a smart watch, a smart bracelet), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a drone, and the like. The home electronic product can be, for example, a smart door lock, a television, a remote controller, a refrigerator, a charging household small appliance (for example, a soybean milk machine, a sweeping robot), and the like. The vehicle-mounted electronic product can be, for example, a vehicle-mounted navigation device, a vehicle-mounted DVD, and the like. The financial terminal product can be, for example, an ATM machine, a self-service terminal, and the like. Embodiments of the present application do not specially limit the specific form of the above electronic device. The following embodiments are exemplarily described by taking a mobile phone as an example.

[0120] An example structure of an electronic device is shown in FIG. 1. The electronic device 1 mainly includes a display module 2, a middle frame 3, a shell (or referred to as a battery cover, a back shell) 4, and a cover plate 5.

[0121] The display module 2 has a light-out side at which a display image can be seen, and a non-light-out side opposite to the light-out side. The back of the display module 2 is close to the middle frame 3, and the cover plate 5 is arranged at the light-out side of the display module 2.

[0122] The cover plate 5 is located on the side of the display module 2 away from the middle frame 3. The cover plate 5 can be, for example, a cover glass (CG), which can have a certain toughness.

[0123] The middle frame 3 is located between the display module 2 and the shell 4. The surface of the middle frame 3 away from the display module 2 is used to mount internal components such as a battery, a printed circuit board (PCB), a camera, an antenna, and the like. After the shell 4 is covered with the middle frame 3, the above-mentioned internal components are located between the shell 4 and the middle frame 3.

[0124] The display module 2 includes a display panel (DP).

[0125] The electronic device 1 can further include an integrated circuit arranged on the printed circuit board. The printed circuit board is used to carry the integrated circuit and is electrically connected with the integrated circuit to realize signal intercommunication.

[0126] In some embodiments, the electronic device 1 further includes electronic devices such as a central processing unit (CPU) chip, a radio frequency chip, a radio frequency power amplifier (PA), a system on a chip (SOC), a power management integrated circuit (PMIC), a storage chip (for example, a high bandwidth memory (HBM)), an audio processor, a touch screen controller, a NAND flash, an image processor, a camera, and a microphone, which are disposed on a printed circuit board for carrying and interacting with the electronic devices.

[0127] For example, the image processor is in communication connection with the camera, and the image processor is configured to acquire image data from the camera and process the image data. The communication connection between the camera and the image processor can include data transmission through electrical connection such as wiring, or data transmission through coupling. It can be understood that the camera and the image processor can also be in communication connection through other data transmission modes.

[0128] The image processor performs optimization processing on the digital image signal and transmits the processed signal to the display module 2. The image processor can be an image processing chip or a digital signal processing chip, which is configured to quickly transmit the data obtained by the photosensitive chip to the processor chip and refresh the photosensitive chip. Therefore, the performance of the image processor directly affects the picture quality (such as color saturation, definition, etc.).

[0129] In some embodiments, the camera of the electronic device 1 includes a first camera and a second camera. For example, the first camera is a front camera of the electronic device and is disposed on the printed circuit board close to the display module 2. The second camera is a rear camera of the electronic device 1 and is disposed on the printed circuit board close to the housing 4. The number and the arrangement position of the cameras are not limited in the embodiments of the present application, and can be reasonably arranged according to actual conditions.

[0130] Based on this, the embodiments of the present application further provide a camera module, which is any one of the cameras included in the electronic device 1. As shown in FIG. 2A, the camera module 10 includes an optical lens 11, a photosensitive element 12, and a filter 13.

[0131] As shown in FIG. 2A, the photosensitive element 12 is disposed on the image side of the optical lens 11. For example, the photosensitive element 12 is disposed on the focal plane of the optical lens 11 to present a clear image.

[0132] For example, the photosensitive element 12 can include an optical sensor. For example, the optical sensor is an image sensor.

[0133] In some embodiments, as shown in FIG. 2A, the camera module 10 further includes an optical filter 13. The optical filter 13 is disposed between the optical lens 11 and the photosensitive element 12.

[0134] For example, the optical filter 13 is used to filter out the unnecessary waveband in the light, to prevent the photosensitive element 12 from generating false colors or moire, so as to improve the effective resolution and color restoration.

[0135] The optical lens 11 mainly uses the refraction principle of the lens to form an image, that is, the light forms a clear image on the focal plane through the optical lens, and an image is formed through the photosensitive element 12 located on the focal plane.

[0136] As users have higher and higher requirements for the photographing performance of the electronic device 1, setting a medium-long focal length optical lens has become a development trend of the camera module. Based on this, as shown in FIG. 2B, an optical lens 11 is shown, which can realize medium-long focal length photography requirements.

[0137] However, due to the large total track length (TTL) of the above-mentioned optical lens 11, the size of the optical lens 11 is large. The photosensitive element 12 is disposed on the focal plane of the optical lens 11, which will cause the size of the camera module 10 to be larger.

[0138] The optical lens 11 can include multiple lenses with fixed focal lengths, and in the shooting process, zoom is achieved by combining multiple lenses with fixed focal lengths. However, such an optical lens 11 will result in an increase in size, which is not conducive to the thinness of the electronic device 1.

[0139] In addition, at present, users are more and more expecting electronic devices with long focal length optical lenses having large target surfaces and large zoom ratios. The zoom optical lens has become an important part of the user's photography experience. With the increasing popularity of long focal length photography of electronic devices, users' requirements for zoom optical lenses are gradually increasing.

[0140] For example, the zoom effect can be achieved by combining one or more fixed focus optical lenses.

[0141] However, the above-mentioned zoom can only zoom between fixed focal lengths, and the color consistency between different optical lenses is poor, and the cost is high.

[0142] Alternatively, for example, zoom can be achieved by moving the lens group of the optical lens. However, this results in the need for additional large size to meet the zooming requirements, making it difficult to meet the miniaturization requirements of electronic devices.

[0143] Based on this, in order to realize a small-sized optical lens with a large zoom ratio, an embodiment of the present application provides an optical lens applied to the above-mentioned camera module 10. As shown in FIG. 3, the optical lens 11 comprises a first zoom lens group 21, a first light folding member 31 and a second zoom lens group 22 arranged in sequence.

[0144] As shown in FIG. 3, the first zoom lens group 21 comprises a first lens group 110 and a second lens group 120. The first lens group 110 has a first optical axis a1, and the second lens group 120 has a second optical axis a2. The first optical axis a1 and the second optical axis a2 are parallel.

[0145] At least one of the first lens group 110 and the second lens group 120 is movable along a direction perpendicular to the first optical axis a1, so that the at least one of the first lens group 110 and the second lens group 120 is arranged on the light-incident side of the first light folding member 31.

[0146] In this way, the focal length of the lens group on the light-incident side of the first light folding member 31 can be changed, and further the focal length of the optical lens 11 can be changed.

[0147] Here, it is clarified that the at least one of the first lens group 110 and the second lens group 120 arranged on the light-incident side of the first light folding member 31 can be understood as the light emitted from the at least one of the first lens group 110 and the second lens group 120 being incident to the first light folding member 31.

[0148] For example, as shown in FIG. 3, the first lens group 110 is arranged on the light-incident side of the first light folding member 31, i.e. the light emitted from the first lens group 110 is incident to the first light folding member 31, and at this time the light does not pass through the second lens group 120.

[0149] Alternatively, for example, as shown in FIG. 4, the second lens group 120 is arranged on the light-incident side of the first light folding member 31, i.e. the light emitted from the second lens group 120 is incident to the first light folding member 31, and at this time the light does not pass through the first lens group 110.

[0150] Alternatively, for example, as shown in FIG. 5, the first lens group 110 and the second lens group 120 are both arranged on the light-incident side of the first light folding member 31, i.e. the first lens group 110 and the second lens group 120 are both arranged on the light-incident side of the first light folding member 31, the light is emitted from the first lens group 110 and the second lens group 120 in sequence, and the emitted light is incident to the first light folding member 31. The embodiment of the present application does not limit the arrangement positions of the first lens group 110 and the second lens group 120, i.e. the first lens group 110 can be closer to the first light folding member 31, or the second lens group 120 can be closer to the first light folding member 31.

[0151] In the embodiments of the present application, the first lens group 110 has a first distance with the first light-turning piece 31, and the second lens group 120 has a second distance with the first light-turning piece 31, wherein the first distance and the second distance are different. That is, when the first lens group 110 and the second lens group 120 are both arranged on the light-incident side of the first light-turning piece 31, the first lens group 110 and the second lens group 120 are arranged in a stack. At this time, the first optical axis a1 and the second optical axis a2 coincide.

[0152] In the embodiments of the present application, the number of lens groups included in the first zoom lens group 21 is not limited, for example, the number of lens groups in the first zoom lens group 21 can be 2, 3, or 4, etc. In the case where more than 2 lens groups are included in the first zoom lens group 21, the description of other lens groups is similar to that of the first lens group 110 and the second lens group 120 described above, and specific reference can be made to the above-mentioned related introduction of the first lens group 110 and the second lens group 120.

[0153] With continued reference to FIG. 3, the second zoom lens group 22 is arranged on the image side of the first light-turning piece 31. The second zoom lens group 22 includes one or more lens groups. For example, the second zoom lens group 22 can include 1 lens group, 2 lens groups, 3 lens groups, or 4 lens groups, etc. In the embodiments of the present application, the number of lens groups included in the second zoom lens group 22 is not limited, and can be reasonably arranged according to actual conditions.

[0154] In some embodiments, the second zoom lens group 22 includes a third lens group 130 having a third optical axis a3.

[0155] The third lens group 130 can move along the third optical axis a3 to change the distance between the third lens group 130 and the first light-turning piece 31, so that the optical path distance of the light emitted from the first light-turning piece 31 incident to the third lens group 130 changes, and thus the focal length of the optical lens 11 changes.

[0156] In the embodiments of the present application, the first optical axis a1 and the second optical axis a2 are perpendicular to the third optical axis a3, respectively. That is, the first optical axis a1 is perpendicular to the third optical axis a3, and the second optical axis a2 is perpendicular to the third optical axis a3.

[0157] For example, as shown in FIG. 3, the second zoom lens group 22 is composed of the third lens group 130, the fourth lens group 140, and the fifth lens group 150.

[0158] The fourth lens group 140 has the third optical axis a3, and the fifth lens group 150 has the third optical axis a3. That is, the fifth lens group 150, the fourth lens group 140, and the third lens group 130 have the same optical axis (the third optical axis a3).

[0159] The setting positions of the third lens group 130, the fourth lens group 140 and the fifth lens group 150 are not limited in the embodiments of the present application. For example, as shown in FIG. 3, the fourth lens group 140, the fifth lens group 150 and the third lens group 130 are arranged in sequence along the object side to the image side.

[0160] For example, the fifth lens group 150 can move along the third optical axis a3 to change the distance between the fifth lens group 150 and the first light-turning piece 31, so that the optical path distance of the light rays emitted from the first light-turning piece 31 to the fifth lens group 150 changes, and then the focal length of the optical lens 11 changes.

[0161] For example, the fourth lens group 140 can move along the third optical axis a3 to change the distance between the fourth lens group 140 and the first light-turning piece 31, so that the optical path distance of the light rays emitted from the first light-turning piece 31 to the fourth lens group 140 changes, and then the focal length of the optical lens 11 changes.

[0162] Alternatively, for example, in some embodiments, the position of the lens group (i.e., the fourth lens group 140) closest to the first light-turning piece 31 in the second zoom lens group 22 remains unchanged, and only the fifth lens group 150 and the third lens group 130 are moved. By moving the positions of the fifth lens group 150 and the third lens group 130, the contribution of the second zoom lens group 22 to the zoom ratio of the optical lens 11 can be effectively controlled, the zoom ratio of the optical lens 11 is increased, and the optical lens 11 can meet different shooting scenes and shooting requirements, thereby increasing the application of the optical lens 11.

[0163] For example, the lens group farthest from the first light-turning piece 31 in the second zoom lens group 22 has a negative focal power. As shown in FIG. 3, the third lens group 130 is the lens group farthest from the first light-turning piece 31 in the second zoom lens group 22, and the third lens group 130 has a negative focal power.

[0164] In this way, the light rays emitted through the second zoom lens group 22 can be diffused, the target area is increased, and the imaging quality is improved.

[0165] For example, the fourth lens group 140 has a negative focal power, the fifth lens group 150 has a positive focal power, and the third lens group 130 has a negative focal power.

[0166] In this way, by controlling at least one of the fifth lens group and the third lens group to move along the third optical axis a3, the contribution of the second zoom lens group 22 to the zoom ratio of the optical lens 11 can be changed, and the zoom ratio of the optical lens 11 is increased.

[0167] For example, the number of lens groups included in the second zoom lens group 22 can also be greater than 3. The embodiments of the present application do not limit this, and reasonable settings can be made according to actual conditions.

[0168] In the case that the second zoom lens set 22 includes more than three lens sets, the description of other lens sets is similar to the description of the third lens set 130, the fourth lens set 140 and the fifth lens set 150, and can refer to the above description of the third lens set 130, the fourth lens set 140 and the fifth lens set 150.

[0169] As shown in FIG. 3, the first lens set 110 and the second lens set 120 can each include one lens, and the third lens set 130, the fourth lens set 140 and the fifth lens set 150 can each include at least two lenses. Of course, in some other examples, the first lens set 110 and the second lens set 120 can each include multiple lenses, and the third lens set 130, the fourth lens set 140 and the fifth lens set 150 can each include one lens. In the embodiments of the present application, the number of lenses in the first lens set 110, the second lens set 120, the third lens set 130, the fourth lens set 140 and the fifth lens set 150 is not limited.

[0170] Regarding the manner of changing the focal length of the first zoom lens set 21, taking the case that the first zoom lens set 21 includes two lens sets, i.e., the first zoom lens set 21 includes the first lens set 110 and the second lens set 120, as an example for illustrative description.

[0171] In some embodiments, the first lens set 110 has positive refractive power, and the second lens set 120 has positive refractive power. When the optical lens 11 is in the first state, as shown in FIG. 3, the first lens set 110 is located on the light-incoming side of the first light folding member 31. When the optical lens 11 is in the second state, as shown in FIG. 4, the second lens set 120 is located on the light-incoming side of the first light folding member 31.

[0172] In order to realize different shooting scenes, the optical lens 11 can have a long focal end and a wide angle end. One of the first state of the optical lens 11 and the second state of the optical lens 11 is the wide angle end of the optical lens 11, and the other is the long focal end of the optical lens 11. For example, the first state of the optical lens 11 is the wide angle end of the optical lens 11, and the second state of the optical lens 11 is the long focal end of the optical lens 11. Or, for example, the first state of the optical lens 11 is the long focal end of the optical lens 11, and the second state of the optical lens 11 is the wide angle end of the optical lens 11. In the embodiments of the present application, this is not limited, and can be reasonably set according to actual conditions. In the following, in order to facilitate the description, the first state of the optical lens 11 is taken as the wide angle end of the optical lens 11, and the second state of the optical lens 11 is taken as the long focal end of the optical lens 11.

[0173] For example, in the zooming process from the first state to the second state of the optical lens 11, as shown in FIG. 3 and FIG. 4, the first zoom lens group 21 shown in FIG. 3 is switched to the first zoom lens group 21 shown in FIG. 4, i.e., the second lens group 120 is moved to the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the first lens group 110 is moved out of the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1.

[0174] Alternatively, for example, in the zooming process from the second state to the first state of the optical lens 11, as shown in FIG. 3 and FIG. 4, the first zoom lens group 21 shown in FIG. 4 is switched to the first zoom lens group 21 shown in FIG. 3, i.e., the first lens group 110 is moved to the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the second lens group 120 is moved out of the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1.

[0175] In the switching process from the first state to the second state of the optical lens 11, the lens group originally located on the optical path is moved out of the optical path, and the lens group originally not located on the optical path is moved into the optical path. That is, the positions of the first lens group 110 and the second lens group 120 are interchanged.

[0176] As shown in FIG. 3, the first lens group 110 is located on the optical path and on the light entrance side of the first light folding member 31, and the second lens group 120 is not located on the optical path and is located on the side close to the image side. At this time, the lens group not located on the optical path is arranged at a position on the side of the second zoom lens group 22, and does not occupy the size of the optical lens 11. When the first lens group 110 or the second lens group 120 is located on the light entrance side of the first light folding member 31, the first lens group 110 and the second lens group 120 do not overlap in the direction of the first optical axis a1.

[0177] For example, the optical power of the first lens group 110 is greater than the optical power of the second lens group 120. That is, the focal length of the first lens group 110 is greater than the focal length of the second lens group 120.

[0178] When the optical lens 11 is switched from the wide-angle end to the telephoto end, the first zoom lens group 21 of the optical lens 11 is switched from FIG. 3 to FIG. 4. When the optical lens 11 is at the wide-angle end (the first state), the focal length of the optical lens 11 is fw, and the focal length of the first zoom lens group 21 (the first lens group 110) located on the light entrance side of the first light folding member 31 is fw1. When the optical lens 11 is at the telephoto end (the second state), the focal length of the optical lens 11 is ft, and the focal length of the first zoom lens group 21 (the second lens group 120) located on the light entrance side of the first light folding member 31 is ft1. At this time, fw<ft, and fw1<ft1.

[0179] In some embodiments, the first lens group 110 has positive refractive power, and the second lens group 120 has negative refractive power. When the optical lens 11 is in the first state, as shown in FIG. 5, the first lens group 110 and the second lens group 120 are both located on the light-in side of the first folding member 31, and the first optical axis a1 and the second optical axis a2 coincide, i.e., the first lens group 110 and the second lens group 120 are stacked on the light-in side of the first folding member 31.

[0180] When the optical lens 11 is in the second state, as shown in FIG. 3, the first lens group 110 is located on the light-in side of the first folding member 31.

[0181] In the zooming process from the first state to the second state of the optical lens 11, it is a process of switching from the first zoom lens group 21 shown in FIG. 5 to the first zoom lens group 21 shown in FIG. 3, and the second lens group 120 is moved out of the light-in side of the first folding member 31 in a direction perpendicular to the first optical axis a1.

[0182] In the zooming process from the second state to the first state of the optical lens 11, it is a process of switching from the first zoom lens group 21 shown in FIG. 3 to the first zoom lens group 21 shown in FIG. 5, and the second lens group 120 is moved to the light-in side of the first folding member 31 in a direction perpendicular to the first optical axis a1, so that the first optical axis a1 and the second optical axis a2 coincide.

[0183] In the above embodiments, the focal length of the optical lens 11 is changed by moving a lens group (for example, the second lens group 120) into or out of the light-in side of the first folding member 31. For example, when the optical lens 11 is at the wide-angle end, the focal length of the first zoom lens group 21 located on the light-in side of the first folding member 31 (the focal length of the combination of the first lens group 110 and the second lens group 120) is ft1, and the focal length of the second lens group 120 is f11. At this time, the ratio of ft1 to f11 satisfies the condition: |f11 / ft1|≤28. For example, the absolute value of the ratio of f11 to ft1 can be 7, 9, 13, 16, 24, or 28, etc. In this way, when the focal length of the optical lens 11 is changed by moving a lens group into the light-in side of the first folding member 31, the focal length of the first zoom lens group 21 located on the light-in side of the first folding member 31 when the optical lens 11 is at the telephoto end, and the focal length of the lens group moved into the light-in side of the first folding member 31 are reasonably distributed, which can change the contribution of the first zoom lens group 21 located on the light-in side of the first folding member 31 to the zoom ratio of the optical lens 11, and increase the zoom ratio of the optical lens 11. For example, 9≤|f11 / ft1|≤25. In this way, the contribution of the first zoom lens group 21 located on the light-in side of the first folding member 31 to the zoom ratio of the optical lens 11 can be further changed, and the zoom ratio of the optical lens 11 can be further increased.

[0184] When the optical lens 11 is at the telephoto end, the focal length of the first zoom lens group 21 located at the light entrance side of the first light folding member 31 (the focal length of the combination of the first lens group 110 and the second lens group 120) is fw1, and the focal length of the second lens group 120 is f11. At this time, the ratio of fw1 to f11 satisfies the condition: |f11 / fw1|≤30. For example, the absolute value of the ratio of f11 to fw1 can be 8, 9, 12, 15, 23, 27, or 30, etc. In this way, by moving the lens group to the light entrance side of the first light folding member 31 to change the focal length of the optical lens 11, the focal length of the lens group moved to the light entrance side of the first light folding member 31 is reasonably distributed, which can change the contribution of the first zoom lens group 21 located at the light entrance side of the first light folding member 31 to the zoom ratio of the optical lens 11, and increase the zoom ratio of the optical lens 11. For example, 10≤|f11 / fw1|≤26. In this way, the contribution of the first zoom lens group 21 located at the light entrance side of the first light folding member 31 to the zoom ratio of the optical lens 11 can be further changed, and the zoom ratio of the optical lens 11 can be further increased.

[0185] In yet some embodiments, the first lens group 110 has negative optical power, and the second lens group 120 has positive optical power. When the optical lens 11 is in the first state, as shown in FIG. 4, the second lens group 120 is located at the light entrance side of the first light folding member 31.

[0186] When the optical lens 11 is in the second state, as shown in FIG. 5, both the first lens group 110 and the second lens group 120 are located at the light entrance side of the first light folding member 31.

[0187] In the zooming process of switching the optical lens 11 from the first state to the second state, it is a process of switching the first zoom lens group 21 shown in FIG. 4 to the first zoom lens group 21 shown in FIG. 5, and the first lens group 110 is moved to the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1 so that the first optical axis a1 and the second optical axis a2 coincide.

[0188] In the zooming process of switching the optical lens 11 from the second state to the first state, it is a process of switching the first zoom lens group 21 shown in FIG. 5 to the first zoom lens group 21 shown in FIG. 4, and the first lens group 110 is moved out of the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1.

[0189] In the above embodiments, the focal length of the optical lens 11 is changed by moving the lens group (e.g., the first lens group 110) on the light-incoming side of the first light-turning piece 31. For example, when the optical lens 11 is at the wide-angle end, the focal length of the first zoom lens group 21 (the focal length of the combination of the first lens group 110 and the second lens group 120) on the light-incoming side of the first light-turning piece 31 is ft1, and the focal length of the first lens group 110 is f11. At this time, the ratio of ft1 to f11 satisfies the condition: |f11 / ft1|≤28. For example, 9≤|f11 / ft1|≤25. When the optical lens 11 is at the telephoto end, the focal length of the first zoom lens group 21 (the focal length of the combination of the first lens group 110 and the second lens group 120) on the light-incoming side of the first light-turning piece 31 is fw1, and the focal length of the second lens group 120 is f11. At this time, the ratio of fw1 to f11 satisfies the condition: |f11 / fw1|≤30. For example, 10≤|f11 / fw1|≤26. In this way, the contribution of the first zoom lens group 21 on the light-incoming side of the first light-turning piece 31 to the zoom ratio of the optical lens 11 can be further changed, and the zoom ratio of the optical lens 11 can be further increased.

[0190] Regarding the moving manner of the lens groups in the second zoom lens group 22, the second zoom lens group 22 is taken as an example, which includes three lens groups, i.e., the second zoom lens group 22 includes the third lens group 130, the fourth lens group 140, and the fifth lens group 150. The fourth lens group 140, the fifth lens group 150, and the third lens group 130 are arranged in order from the object side to the image side. For example, the third lens group 130 has a negative optical power, the fourth lens group 140 has a negative optical power, and the fifth lens group 150 has a positive optical power.

[0191] In some embodiments, as shown in FIG. 6A, when the optical lens 11 is in the first state, the fourth lens group 140 and the fifth lens group 150 have a first distance d1 therebetween, and the fifth lens 150 and the third lens 130 have a second distance d2 therebetween.

[0192] As shown in FIG. 6B, when the optical lens 11 is in the second state, the fourth lens group 140 and the fifth lens group 150 have a third distance d31 therebetween, and the fifth lens 150 and the third lens 130 have a fourth distance d41 therebetween.

[0193] As shown in FIGS. 6A and 6B, the first distance d1 is greater than the third distance d31, and the second distance d2 is greater than the fourth distance d41.

[0194] During the zooming process from the first state to the second state of the optical lens 11, the fifth lens group 150 and the third lens group 130 move along the third optical axis a3 toward the direction of approaching the first folding member 31, and the fifth lens group 150 and the third lens group 130 move along the third optical axis a3 toward the object side, for example.

[0195] It is illustrated herein that the position of the fourth lens group 140 can remain unchanged, or the fourth lens group can also move along the third optical axis a3 toward the image side or the object side, which is not limited in the embodiments of the present application.

[0196] During the zooming process from the second state to the first state of the optical lens 11, the fifth lens group 150 and the third lens group 130 move along the third optical axis a3 toward the direction of moving away from the first folding member 31, and the moving distance of the fifth lens group 150 is smaller than that of the third lens group 130.

[0197] It is illustrated herein that, as shown in FIGS. 6A and 6B, during the zooming process from the first state to the second state of the optical lens 11, the first zoom lens group 21 located on the light entering side of the first folding member 31 is also moved.

[0198] In other embodiments, as shown in FIG. 6A, when the optical lens 11 is in the first state, the fourth lens group 140 has a first distance d1 with the fifth lens group 150, and the fifth lens 150 has a second distance d2 with the third lens 130.

[0199] As shown in FIG. 6C, when the optical lens 11 is in the second state, the fourth lens group 140 has a third distance d32 with the fifth lens group 150, and the fifth lens 150 has a fourth distance d42 with the third lens 130.

[0200] For example, as shown in FIGS. 6A and 6C, the first distance d1 is greater than the third distance d32, and the second distance d2 is smaller than the fourth distance d42.

[0201] During the zooming process from the first state to the second state of the optical lens 11, the fifth lens group 150 and the third lens group 130 move along the third optical axis a3 toward the direction of approaching the first folding member 31, and the moving distance of the fifth lens group 150 is greater than that of the third lens group 130.

[0202] During the zooming process from the second state to the first state of the optical lens 11, the fifth lens group 150 and the third lens group 130 move along the third optical axis a3 toward the direction of moving away from the first folding member 31, and the moving distance of the fifth lens group 150 is greater than that of the third lens group 130.

[0203] The moving distance and moving direction of each lens group in the second zoom lens group 22 in the embodiments of the present application are not limited, and can be reasonably set according to actual conditions.

[0204] For example, in the zooming process of switching the optical lens 11 from the first state to the second state, the moving distance of the fifth lens group 150 is d5, the moving distance of the third lens group 130 is d3, and the maximum value between the moving distance d5 of the fifth lens group 150 and the moving distance d3 of the third lens group is dm, that is, dm is the moving distance of the lens group with the largest moving distance in the second zoom lens group 22. The imaging target surface size of the optical lens 11 is IH. At this time, the ratio of dm to IH satisfies the condition formula: dm / IH≥0.4. For example, the ratio of dm to IH is 0.4, 0.5, 0.7, or 0.8, etc. In this way, by controlling the relationship between the maximum moving distance dm of the lens group in the second zoom lens group 22 and the imaging target surface size IH, the zoom ratio of the optical lens 11 can be effectively increased, so that the optical lens 11 can realize high-quality imaging. For example, 0.4≤dm / IH≤0.8. In this way, the zoom ratio of the optical lens 11 can be further increased, so that the performance of the optical lens 11 is better, and the imaging quality is better.

[0205] For example, the sum of the moving distances of the lens groups in the second zoom lens group 22 moving in the same direction is ∑m, and ∑m≥10mm. For example, the sum ∑m of the moving distance d5 of the fifth lens group 150 and the moving distance d3 of the third lens group is greater than or equal to 10mm, that is, the sum of d5 and d3 is greater than or equal to 10mm. For example, the sum of the moving distance d5 of the fifth lens group 150 and the moving distance d3 of the third lens group can be 10mm, 13mm, 17mm, 19mm, or 21mm, etc. In this way, by controlling the moving distance of the lens group of the second zoom lens group 22, the miniaturization of the optical lens 11 is facilitated. For example, 10mm≤∑m≤20mm. In this way, the miniaturization of the optical lens 11 is further realized.

[0206] For example, the moving distance of the lens group with the largest moving distance in the second zoom lens group 22 is dm, and dm satisfies: 5mm≤dm≤15mm. In this way, by controlling the moving distance of the lens group in the second zoom lens group 22, the zoom ratio of the optical lens 11 is increased, which is conducive to the miniaturization of the optical lens 11. For example, 6mm≤dm≤10mm. In this way, the zoom ratio of the optical lens 11 can be further increased, which is more conducive to the miniaturization of the optical lens 11.

[0207] For example, the focal length of the lens group farthest from the first folding element 31 in the second zoom lens group 22 is f22, i.e., the focal length of the third lens group 130 is f22, and the focal length of the optical lens 11 is ft when the optical lens 11 is at the telephoto end. At this time, the ratio of f22 to ft satisfies the condition: 2≤|ft / f22|≤8. For example, the ratio of ft to f22 is -2, -4, -5, -7, or -8, etc. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding element 31 in the second zoom lens group 22 and the focal length of the optical lens 11 at the telephoto end, the power of the lens group farthest from the first folding element 31 in the second zoom lens group 22 can be reasonably controlled, thereby facilitating the increase of the target surface of the optical lens 11. For example, 3≤|ft / f22|≤6. In this way, the target surface of the optical lens 11 can be more favorably increased, and the performance of the optical lens 11 can be better.

[0208] The focal length of the optical lens 11 at the wide-angle end is fw. At this time, the ratio of f22 to fw satisfies the condition: 1≤|fw / f22|≤4. For example, the ratio of fw to f22 is -1, -2, -3, or -4, etc. In this way, by reasonably allocating the focal length of the lens group farthest from the first folding element 31 in the second zoom lens group 22 and the focal length of the optical lens 11 at the wide-angle end, the power of the lens group farthest from the first folding element 31 in the second zoom lens group 22 can be reasonably controlled, thereby facilitating the increase of the target surface of the optical lens 11. For example, 1.5≤|fw / f22|≤2.4. In this way, the target surface of the optical lens 11 can be more favorably increased, and the performance of the optical lens 11 can be better.

[0209] In the embodiment of the present application, as shown in FIG. 7A, the first zoom lens group 21 is configured to transmit light to the first folding element 31. The first folding element 31 is configured to reflect light from the first zoom lens group 21 after folding to the second zoom lens group 22. The second zoom lens group 22 is configured to transmit light from the first folding element 31 to the second folding element 32. The second folding element 32 is configured to output light from the second zoom lens group 22 after folding.

[0210] Regarding the first folding element 31, for example, the first folding element 31 is configured to change the transmission path of light. For example, as shown in FIG. 7A, light is incident on the first folding element 31 in a direction parallel to the second optical axis a2, is folded by the first folding element 31, and is output in a direction parallel to the third optical axis a3, so that the light is incident on the second zoom lens group 22 in a direction parallel to the third optical axis a3. The first folding element 31 is arranged on the light entrance side of the second zoom lens group 22, and the first folding element 31 is arranged on the light exit side of the first zoom lens group 21.

[0211] The first light folding member 31 can include a prism, a mirror or a Schmidt prism. For example, the prism can include any one of a right-angle prism, a three-prism, a four-prism or a five-prism.

[0212] For example, as shown in FIG. 7A, the first light folding member 31 can include a first surface 311, a second surface 312 and a third surface 313. The first surface 311 is arranged opposite to the first zoom lens group 21, and the third surface 313 is arranged opposite to the second zoom lens group 22. For example, if the first light folding member 31 is a right-angle prism, the first surface 311 and the third surface 313 are two right-angle sides of the right-angle prism, and the second surface 312 is a hypotenuse of the right-angle prism.

[0213] The second surface 312 is a reflective surface, and the first surface 311 and the third surface 313 are transmissive surfaces. After the incident light is transmitted through the first surface 311, the incident light can be folded on the second surface 312, and then emitted by the third surface 313. For example, when the incident light of the object enters the first light folding member 31, the incident light can be folded by 90° at the second surface 312, and the folded incident light can reach the photosensitive element 12 through the second zoom lens group 22. By arranging the first light folding member 31, the second zoom lens group 22 can be prevented from being stacked in a direction parallel to the object plane, thereby reducing the size of the optical lens 11 in the direction parallel to the object plane.

[0214] As shown in FIG. 7A, the lens group (the first lens group 110 in FIG. 7A) in the first zoom lens group 21 that is not in the optical path is located on the same side of the first light folding member 31 as the second zoom lens group 22.

[0215] In this way, the lens group in the first zoom lens group 21 that is not used does not occupy the size of the optical lens 11 in the direction of the third optical axis a3, and the size of the optical lens 11 can be reduced.

[0216] In some embodiments, as shown in FIG. 7A, the optical lens 11 further includes a second light folding member 32. The second light folding member 32 is arranged on the light exit side of the second zoom lens group 22, i.e., the second light folding member 32 is arranged on the image side of the second zoom lens group 22.

[0217] The second light folding member 32 is used to change the transmission path of the light. The direction of the light incident to the second light folding member 32 is different from the direction of the light emitted from the second light folding member 32. For example, as shown in FIG. 7A, the light emitted from the second zoom lens group 22 is incident to the second light folding member 32 in a direction parallel to the third optical axis a3, and after being folded by the second light folding member 32, the light is emitted in a direction intersecting the third optical axis a3 (for example, the direction can be parallel to the first optical axis a1).

[0218] Exemplarily, as shown in FIG. 7A, the light exit side of the optical lens 11 is further provided with a photosensitive element 12 and a filter 13. In some embodiments, the photosensitive element 12 and the filter 13 can be integrated in the optical lens 11. This is not limited in the embodiments of the present application, and can be reasonably arranged according to actual conditions.

[0219] The second light folding member 32 can include a prism, a mirror or a Schmidt prism. For example, the prism can include any one of a right-angle prism, a three-prism, a four-prism or a five-prism.

[0220] Exemplarily, as shown in FIG. 7A, the second light folding member 32 can include a first face 321, a second face 322 and a third face 323. The first face 321 is arranged opposite to the second zoom lens group 22, and the third face 323 is arranged opposite to the photosensitive element 12. For example, if the second light folding member 32 is a right-angle prism, the first face 321 and the third face 323 are two right-angle sides of the right-angle prism, and the second face 322 is the hypotenuse of the right-angle prism.

[0221] The second face 322 is a reflective face, and the first face 321 and the third face 323 are transmissive faces. The incident light is transmitted through the first face 321, and then is folded on the second face 322, and then is emitted by the third face 323. Exemplarily, when the incident light of the object enters the second light folding member 32, the incident light is folded by 90° at the second face 322, and the folded incident light can reach the photosensitive element 12.

[0222] Through the above arrangement, the photosensitive element 12 can be arranged parallel to the object plane, and when the size of the photosensitive element 12 is large, the thickness of the electronic device 1 can also not be affected. That is, the size of the photosensitive element 12 is no longer limited by the thickness of the electronic device 1, so that a larger photosensitive element 12 can be arranged, which is beneficial to improve the imaging quality.

[0223] Alternatively, exemplarily, the second light folding member 32 can include a plurality of reflective faces. As shown in FIG. 7B, the second light folding member 32 can include two reflective faces. For example, the second face 322 and the third face 323 of the second light folding member 32 are both reflective faces. The second face 322 is configured to transmit light smaller than a preset angle and reflect light greater than or equal to the preset angle. The preset angle is not limited in the embodiments of the present application, and can be reasonably arranged according to actual conditions. At this time, the photosensitive element 12 is arranged on the light exit side of the second face 322, which can reduce the size of the optical lens 11. The two reflective faces, i.e. the second face 322 and the third face 323, have an included angle towards the second zoom lens group 22. In this way, when the incident light of the object enters the second light folding member 32, the incident light is folded at the second face 322, the folded light is folded again through the third face 323, and then is transmitted to the second face 322, and reaches the photosensitive element 12 after being transmitted by the second face 322.

[0224] In this way, the second light-turning member 32 can turn the light path from the second zoom lens group 22 multiple times, which is conducive to further reducing the size of the optical lens 11.

[0225] For example, the distance d1 between the first light-turning member 31 and the second light-turning member 32 is less than or equal to 30 mm. For example, the distance d1 can be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, or 30 mm, etc. In this way, by controlling the distance between the first light-turning member 31 and the second light-turning member 32, the size of the optical lens 11 can be reasonably controlled, which is conducive to miniaturization of the optical lens 11. For example, 20 mm≤d1≤25 mm. In this way, the miniaturization of the optical lens 11 is more conducive.

[0226] For example, the distance d1 between the first light-turning member 31 and the second light-turning member 32 is less than or equal to 30 mm. For example, the distance d1 can be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, or 30 mm, etc. In this way, by controlling the distance between the first light-turning member 31 and the second light-turning member 32, the size of the optical lens 11 can be reasonably controlled, which is conducive to miniaturization of the optical lens 11. For example, 20 mm≤d1≤25 mm. In this way, the miniaturization of the optical lens 11 is more conducive.

[0227] For example, the distance d1 between the first light-turning member 31 and the second light-turning member 32 is less than or equal to 30 mm. For example, the distance d1 can be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, or 30 mm, etc. In this way, by controlling the distance between the first light-turning member 31 and the second light-turning member 32, the size of the optical lens 11 can be reasonably controlled, which is conducive to miniaturization of the optical lens 11. For example, 20 mm≤d1≤25 mm. In this way, the miniaturization of the optical lens 11 is more conducive.

[0228] In the embodiments of the present application, the concave-convex shapes of the image side surface and the object side surface of each lens in the lens set are not limited. At least the part corresponding to the optical axis of the image side surface of the lens can be a convex surface or a concave surface. At least the part corresponding to the optical axis of the object side surface of the lens can be a convex surface or a concave surface. The specific shape can be selected and set according to the actual lens matching requirements.

[0229] Here, it is clarified that the convex surface or the concave surface mentioned in the embodiments of the present application refers to the convex surface or the concave surface at the paraxial position. It should be noted that the convex surface or the concave surface at the paraxial position refers to the convex surface or the concave surface at the position infinitely close to the optical axis of the lens. That is, the paraxial position refers to the position infinitely close to the optical axis. It should be noted that the shape of the lens, the concave-convex degree of the object side surface and the image side surface are only illustrative, and do not limit the embodiments of the present application. The embodiments of the present application do not make any limitation on the concave-convex of the part of the object side surface and the image side surface away from the optical axis. For example, the positive radius of curvature of the object side surface of the lens indicates that the surface type of the object side surface is a convex surface, the negative radius of curvature of the object side surface of the lens indicates that the surface type of the object side surface is a concave surface, the positive radius of curvature of the image side surface of the lens indicates that the surface type of the object side surface is a concave surface, and the negative radius of curvature of the image side surface of the lens indicates that the surface type of the object side surface is a convex surface.

[0230] In the embodiments of the present application, the forming material of each lens in the lens set is 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 11 and has high design flexibility, facilitating popularization and production implementation.

[0231] In the embodiments of the present application, the shape of each lens in the lens set is not limited. For example, the shape of the lens can be circular or elliptical, which has a wide application range and is convenient for production implementation.

[0232] In the embodiments of the present application, the movement trajectory of the lens in the lens set during the conversion of the optical lens 11 between the first state and the second state is not limited. For example, the lens in the lens set can move linearly along the optical axis, or the lens in the lens set can rotate around the optical axis while moving relatively along the optical axis.

[0233] In the embodiments of the present application, when the lens set includes a plurality of lenses, the movement mode of all the lenses in the lens set during the conversion of the optical lens 11 between the first state and the second state is also not limited. For example, the optical lens 11 can also include a moving device, and all the lenses in the lens set can be moved together as a whole by the moving device.

[0234] In some embodiments, the focal length of the optical lens 11 is ft when the optical lens 11 is at the telephoto end. The focal length of the optical lens 11 is fw when the optical lens 11 is at the wide-angle end. In this case, the ratio of ft to fw satisfies the condition: 1 < ft / fw ≤ 4. For example, the ratio of ft to fw can be 1.5, 2, 3, or 4. In this way, by reasonably distributing the focal length of the optical lens 11 at the telephoto end and the wide-angle end, the application scenarios of the optical lens 11 can be increased, and the optical lens 11 can be applied more widely.

[0235] For example, the ratio of ft to fw satisfies the condition: 1.5 ≤ ft / fw ≤ 2.5. For example, the ratio of ft to fw can be 1.5, 2, or 2.5, etc. In this way, the performance of the optical lens 11 can be better, and the imaging quality can be better.

[0236] For example, the focal length of the optical lens 11 is fw when the optical lens 11 is at the wide-angle end, and fw satisfies: 15 mm ≤ fw ≤ 30 mm. In this way, by controlling the focal length of the optical lens 11 at the wide-angle end, the contribution of the first zoom lens group 21 located on the light-entering side of the first light-turning piece 31 to the wide-angle end focal length of the optical lens 11 can be effectively controlled, and the shooting range of the optical lens 11 can be expanded. For example, 19 mm ≤ fw ≤ 26 mm. In this way, the shooting range of the optical lens 11 can be further expanded.

[0237] For example, the focal length of the optical lens 11 is ft when the optical lens 11 is at the telephoto end, and ft satisfies: 35 mm ≤ ft ≤ 55 mm. In this way, by controlling the focal length of the optical lens 11 at the telephoto end, the contribution of the first zoom lens group 21 located on the light-entering side of the first light-turning piece 31 to the telephoto end focal length of the optical lens 11 can be effectively controlled, and the shooting range of the optical lens 11 can be expanded. For example, 41 mm ≤ ft ≤ 48.5 mm. In this way, the shooting range of the optical lens 11 can be further expanded.

[0238] In some embodiments, the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 is ft1 when the optical lens 11 is at the telephoto end. The focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 is fw1 when the optical lens 11 is at the wide-angle end. In this case, the ratio of ft1 to fw1 satisfies the condition: 1 < ft1 / fw1 ≤ 1.5. For example, the ratio of ft1 to fw1 can be 1.1, 1.3, or 1.5, etc. In this way, by reasonably allocating the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 when the optical lens 11 is at the telephoto end and the wide-angle end, the contribution of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 to the zoom ratio of the optical lens 11 can be changed, and the zoom ratio of the optical lens 11 can be increased. For example, 1 < ft1 / fw1 ≤ 1.3. In this way, the shooting range of the optical lens 11 can be further expanded, and the zoom ratio of the optical lens 11 can be further increased.

[0239] For example, the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 is fw1 when the optical lens 11 is at the wide-angle end, and fw1 satisfies: 15 mm ≤ fw1 ≤ 30 mm. In this way, by controlling the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 when the optical lens 11 is at the wide-angle end, the contribution of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 to the wide-angle end focal length of the optical lens 11 can be effectively controlled, and the shooting range of the optical lens 11 can be expanded, and the zoom ratio of the optical lens 11 can be increased. For example, 19 mm < fw1 ≤ 24 mm. In this way, the shooting range of the optical lens 11 can be further expanded, and the zoom ratio of the optical lens 11 can be further increased.

[0240] For example, the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 is ft1 when the optical lens 11 is at the telephoto end, and ft1 satisfies: 15 mm ≤ ft1 ≤ 30 mm. In this way, by controlling the focal length of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 when the optical lens 11 is at the telephoto end, the contribution of the first zoom lens group 21 located on the light-incident side of the first light folding member 31 to the telephoto end focal length of the optical lens 11 can be effectively controlled, and the shooting range of the optical lens 11 can be expanded, and the zoom ratio of the optical lens 11 can be increased. For example, 20 mm ≤ ft1 ≤ 27 mm. In this way, the shooting range of the optical lens 11 can be further expanded, and the zoom ratio of the optical lens 11 can be further increased.

[0241] In some embodiments, the second zoom lens group 22 has a cascade magnification Mt for the first zoom lens group 21 located on the light entrance side of the first light folding member 31 when the optical lens 11 is at the telephoto end. The second zoom lens group 22 has a cascade magnification Mw for the first zoom lens group 21 located on the light entrance side of the first light folding member 31 when the optical lens 11 is at the wide-angle end. In this case, the ratio of Mt to Mw satisfies the condition: 1.5≤Mt / Mw≤3.5. For example, the ratio of Mt to Mw can be 1.5, 2, 3, or 3.5, etc. In this way, by reasonably distributing the cascade magnification of the optical lens 11 at the telephoto end and the wide-angle end, the contribution of the second zoom lens group 22 to the zoom ratio of the optical lens 11 can be changed, and the zoom ratio of the optical lens 11 can be increased. For example, 1.6≤Mt / Mw≤2.3. In this way, the zoom ratio of the optical lens 11 can be further increased.

[0242] For example, the second zoom lens group 22 has a cascade magnification Mw for the first zoom lens group 21 located on the light entrance side of the first light folding member 31 when the optical lens 11 is at the wide-angle end, and Mw satisfies: 0.5≤Mw≤1.5. In this way, by controlling the cascade magnification of the optical lens 11 at the wide-angle end, the contribution of the second zoom lens group 22 to the focal length of the optical lens 11 can be effectively controlled, which is beneficial to control the focal length at the wide-angle end. For example, 0.8≤Mw≤1.3. In this way, the contribution of the second zoom lens group 22 to the focal length of the optical lens 11 can be more effectively controlled, which is beneficial to control the focal length at the wide-angle end.

[0243] For example, the second zoom lens group 22 has a cascade magnification Mt for the first zoom lens group 21 located on the light entrance side of the first light folding member 31 when the optical lens 11 is at the telephoto end, and Mt satisfies: 1.2≤Mt≤2.8. In this way, by controlling the cascade magnification of the optical lens 11 at the telephoto end, the contribution of the second zoom lens group 22 to the focal length of the optical lens 11 can be effectively controlled, which is beneficial to control the focal length at the telephoto end. For example, 1.5≤Mt≤2.4. In this way, the contribution of the second zoom lens group 22 to the focal length of the optical lens 11 can be more effectively controlled, which is beneficial to control the focal length at the telephoto end.

[0244] In some embodiments, the optical total length of the optical lens 11 is TTL, the imaging target surface size of the optical lens 11 is IH, the wide-angle end field of view angle of the optical lens 11 is FOVw when the optical lens 11 is at the wide-angle end, and the telephoto end field of view angle of the optical lens 11 is FOVt when the optical lens 11 is at the telephoto end. At this time, the TTL, IH, FOVw and FOVt satisfy the condition formula: (TTL / IH) x (FOVt / FOVw) ≤ 2.5. For example, (TTL / IH) x (FOVt / FOVw) is 1, 1.4, 1.6, 1.8, 1.9, 2.1, 2.4 or 2.5, etc. In this way, by reasonably distributing the relationship between the field of view angle of the optical lens 11 at the wide-angle end and the telephoto end, and the optical total length and the target surface size, the optical total length of the optical lens 11 is small, and the imaging target surface size is large, which is beneficial to improve the competitiveness of the optical lens 11. For example, 1.4 ≤ (TTL / IH) x (FOVt / FOVw) ≤ 2. In this way, the miniaturization of the optical lens 11 can be more beneficial, and the competitiveness of the optical lens 11 can be improved.

[0245] For example, the optical total length TTL of the optical lens 11 satisfies: TTL ≤ 51 mm. In this way, by controlling the optical total length of the optical lens 11, the miniaturization of the optical lens 11 can be met. For example, 40 mm ≤ TTL ≤ 47 mm. In this way, the miniaturization of the optical lens 11 is more beneficial.

[0246] The optical lens 11 provided by the embodiments of the present application can effectively control the contribution of the first zoom lens group 21 and the second zoom lens group 22 to the zoom ratio of the optical lens 11 by changing the focal power of the lens group in the first zoom lens group 21 on the light entrance side of the first folding member 31 and by at least one of the movement of the lens group in the second zoom lens group 22, change the focal length of the optical lens 11, and realize large zoom ratio zoom. In addition, by controlling whether at least part of the lens group in the first zoom lens group 21 is arranged on the optical path and controlling the movement of at least part of the lens group in the second zoom lens group 22 along the optical axis, the zoom ratio of the optical lens 11 can be increased, and the optical lens 11 can meet different shooting scenes and shooting needs, and the application of the optical lens 11 is increased. The optical lens 11 provided by the embodiments of the present application can change the focal length of the optical lens 11 by at least one of the first lens group 110 and the second lens group 120 in the first zoom lens group 21 cutting in or cutting out on the optical path, and the movement of at least the third lens group 130 in the second zoom lens group 22, to realize large zoom ratio zoom.

[0247] The optical lens 11 provided by the embodiments of the present application can effectively utilize space, has a small size, high zoom color consistency, low cost, and improved optical competitiveness. In addition, the scheme provided by the embodiments of the present application is simple and has low complexity.

[0248] The structure and performance of the optical lens 11 provided in the present application are described below in combination with specific embodiments. It is clarified here that the first light folding member 31 and the second light folding member 32 in the figure are only shown as simulation structure diagrams and do not show the specific light path folding path. The light path folding path is consistent with the specific description of the optical lens 11 above.

[0249] Embodiment One

[0250] In the embodiments of the present application, as shown in FIGS. 8A and 8B, the first zoom lens group 21 includes a first lens group 110 and a second lens group 120, the first lens group 110 includes a first lens 101, and the second lens group 120 includes a second lens 102. The second zoom lens group 22 includes a third lens group 130, a fourth lens group 140, and a fifth lens group 150. The fourth lens group 140, the fifth lens group 150, and the third lens group 130 are arranged in order from the object side to the image side. The fourth lens group 140 includes a third lens 103 and a fourth lens 104 arranged in order from the object side to the image side. The fifth lens group 150 includes a fifth lens 105, a sixth lens 106, a seventh lens 107, and an eighth lens 108 arranged in order from the object side to the image side. The third lens group 130 includes a ninth lens 109, a tenth lens 1010, and an eleventh lens 1011 arranged in order from the object side to the image side.

[0251] When the optical lens 11 is in the wide-angle end state, as shown in FIG. 8A, the first lens group 110 and the second lens group 120 are located on the light entrance side of the first light folding member 31, and the first lens group 110 is located on the light entrance side of the second lens group 120. When the optical lens 11 is in the telephoto end state, as shown in FIG. 8B, the second lens group 120 is located on the light entrance side of the first light folding member 31, and the first lens group 110 is not located on the light entrance side of the first light folding member 31.

[0252] For example, the first lens group 110 has positive refractive power, the second lens group 120 has positive refractive power, the fourth lens group has negative refractive power, the fifth lens group 150 has positive refractive power, and the third lens group 130 has negative refractive power.

[0253] As shown in FIGS. 8A and 8B, when the optical lens 11 switches from the wide-angle end state to the telephoto end state, the first lens group 110 moves out of the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 move towards the object side along the third optical axis a3. When the optical lens 11 switches from the telephoto end state to the wide-angle end state, the first lens group 110 moves to the light entrance side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 move towards the image side along the third optical axis a3.

[0254] Table 1.1 shows optical parameters of each lens and reflective element in an optical lens 11 provided in Embodiment I of the present application.

[0255] Table 1.1

[0256] In the table, G1 is the first lens 101, G2 is the second lens 102, G3 is the third lens 103, G4 is the fourth lens 104, G5 is the fifth lens 105, G6 is the sixth lens 106, G7 is the seventh lens 107, G8 is the eighth lens 108, G9 is the ninth lens 109, G10 is the tenth lens 1010, G11 is the eleventh lens 1011, A1 is the first light folding member 31, and A2 is the second light folding member 32.

[0257] S11 and S12 are the object side and image side of the first lens 101 respectively, S21 and S22 are the object side and image side of the second lens 102 respectively, S31 and S32 are the object side and image side of the third lens 103 respectively, S41 and S42 are the object side and image side of the fourth lens 104 respectively, S51 and S52 are the object side and image side of the fifth lens 105 respectively, S61 and S62 are the object side and image side of the sixth lens 106 respectively, S71 and S72 are the object side and image side of the seventh lens 107 respectively, S81 and S82 are the object side and image side of the eighth lens 108 respectively, S91 and S92 are the object side and image side of the ninth lens 109 respectively, S101 and S102 are the object side and image side of the tenth lens 1010 respectively, S111 and S112 are the object side and image side of the eleventh lens 1011 respectively. S1 and S2 are the object side and image side of the first light folding member 31 respectively, S3 and S4 are the object side and image side of the second light folding member 32 respectively, and S5 and S6 are the object side and image side of the optical filter 13 respectively.

[0258] In the table, "-" in Table 1.1 indicates that the curvature is infinite, i.e., the surface is a plane. Thickness is the thickness of an optical element in the direction along the optical axis or the thickness of the air gap between optical elements. The thickness corresponding to the row where the object side of the first lens 101 is located is the thickness of the first lens 101 in the direction along the optical axis, the thickness corresponding to the row where the image side of the first lens 101 is located is the distance from the image side of the first lens 101 to the object side of the second lens 102 in the direction along the optical axis, and so on. In the table, P1 is the thickness of the air gap between optical elements when the optical lens 11 is in the wide-angle end state, and P2 is the thickness of the air gap between optical elements when the optical lens 11 is in the telephoto end state.

[0259] Table 1.2 shows aspherical coefficients of each lens in an optical lens 11 provided in Embodiment I of the present application.

[0260] Table 1.2

[0261] As shown in Table 1.2, each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, i.e., the optical lens 11 includes 22 aspherical surfaces. The aspherical surface type Z of each lens in the optical lens 11 can be calculated by the following aspherical formula (1):

[0262] wherein, c = 1 / R, c is the vertex spherical curvature of the aspherical surface, R is the radius of curvature, r is the distance from the optical surface to the optical axis, Z is the aspherical height of the point along the optical axis, K is the conic coefficient of the surface, i is the aspherical coefficient term, and Ai represents the i-th order aspherical coefficient.

[0263] The optical lens 11 can realize the characteristics of small volume and large target surface by using the above lenses 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 11 composed of the above lenses can be seen from Table 1.3.

[0264] Table 1.3 shows the optical parameters of the optical lens provided in the embodiment of the present application.

[0265] Table 1.3

[0266] In the embodiment of the present application, the ratio of ft to fw is 1.87, and the ratio of ft1 to fw1 is 1.10. The ratio of Mt to Mw is 1.70, and Mt is 2.16 and Mw is 1.27. The ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is 10.35, and the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to ft1 is 9.39. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.38, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.64. The ratio of ft to the focal length of the third lens group 130 is -3.9829, and the ratio of fw to the focal length of the third lens group 130 is -2.13. The ratio of TTL to IH is 3.40, the ratio of FOVt to FOVw is 0.54, and (TTL / IH) x (FOVt / FOVw) is 1.82.

[0267] As shown in FIGS. 8C and 8D, FIG. 8C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 8D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIGS. 8C and 8D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 8C and 8D, the optical lens 11 provided in the embodiment of the present application can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0268] Embodiment Two

[0269] In the embodiment of the present application, the lens groups in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140, and the fifth lens group 150 can refer to the above-mentioned embodiment one. When the optical lens 11 is at the wide-angle end state, as shown in FIG. 9A, the second lens group 120 is located on the light-in side of the first light folding member 31, and the first lens group 110 is not on the light-in side of the first light folding member 31. When the optical lens 11 is at the telephoto end state, as shown in FIG. 9B, the first lens group 110 and the second lens group 120 are both located on the light-in side of the first light folding member 31, and the first lens group 110 is located on the light-in side of the second lens group 120.

[0270] The difference between the embodiment two and the above-mentioned embodiment one is that:

[0271] For example, the first lens group 110 has a negative optical power, the second lens group 120 has a positive optical power, the fourth lens group has a negative optical power, the fifth lens group 150 has a positive optical power, and the third lens group has a negative optical power.

[0272] As shown in FIGS. 9A and 9B, when the optical lens 11 switches from the wide-angle end state to the telephoto end state, the first lens group 110 is moved to the light-in side of the first light folding member 31 in a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 are moved towards the object side along the third optical axis a3. When the optical lens 11 switches from the telephoto end state to the wide-angle end state, the first lens group 110 is moved out of the light-in side of the first light folding member 31 in a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 are moved towards the image side along the third optical axis a3.

[0273] Table 2.1 shows the optical parameters of each lens and reflective element in an optical lens 11 provided in the embodiment two of the present application.

[0274] Table 2.1

[0275] Wherein, the description about Table 2.1 is the same as the description about Table 2.1, and the description about Table 1.1 in the above embodiment one can be referred to.

[0276] Table 2.2 shows the aspheric coefficients of each lens in the optical lens 11 provided in the embodiment two of the present application.

[0277] Table 2.2

[0278] It can be seen from Table 2.2 that each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspheric lens, i.e., the optical lens 11 includes 22 aspheric surfaces. The aspheric surface type Z of each lens in the optical lens 11 can be calculated by the aspheric formula (1) in the above embodiment one.

[0279] The optical lens 11 can realize the characteristics of small volume and large target surface by using the above lenses and the matching of the number of lenses, the focal length, the thickness, the refractive index, the Abbe number, etc. of each lens. The optical parameters of the optical lens 11 composed of the above lenses can be seen from Table 2.3.

[0280] Table 2.3 shows the optical parameters of the optical lens provided in the embodiment two of the present application.

[0281] Table 2.3

[0282] In the embodiment two of the present application, the ratio of ft to fw is 2.00, the ratio of ft1 to fw1 is 1.09. The ratio of Mt to Mw is 1.84, the ratio of Mt to Mw is 1.84. The ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is -11.58, the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to ft1 is -10.63. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.38, the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.64. The ratio of ft to the focal length of the third lens group 130 is -3.11, the ratio of fw to the focal length of the third lens group 130 is -1.55. The ratio of TTL to IH is 3.45, the ratio of FOVt to FOVw is 0.49, and (TTL / IH) x (FOVt / FOVw) is 1.70.

[0283] As shown in FIGS. 9C and 9D, FIG. 9C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 9D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIGS. 9C and 9D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 9C and 9D, the optical lens 11 provided in the embodiment of the present application can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0284] Embodiment Three

[0285] In the embodiment of the present application, the lens group in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140 and the fifth lens group 150 can refer to the above-mentioned embodiment one. As shown in FIG. 10A, when the optical lens 11 is at the wide-angle end state, the first lens group 110 and the second lens group 120 are located on the light-in side of the first light folding member 31, and the first lens group 110 is located on the light-in side of the second lens group 120. As shown in FIG. 10B, when the optical lens 11 is at the telephoto end state, the first lens group 110 is located on the light-in side of the first light folding member 31, and the second lens group 120 is not located on the light-in side of the first light folding member 31.

[0286] The difference between the embodiment three and the above-mentioned embodiment one is that:

[0287] For example, the first lens group 110 has positive refractive power, the second lens group 120 has positive refractive power, the fourth lens group has positive refractive power, the fifth lens group 150 has positive refractive power, and the third lens group has negative refractive power.

[0288] As shown in FIGS. 10A and 10B, when the optical lens 11 switches from the wide-angle end state to the telephoto end state, the second lens group 120 is moved out of the light-in side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 are moved towards the object side along the third optical axis a3. When the optical lens 11 switches from the telephoto end state to the wide-angle end state, the second lens group 120 is moved to the light-in side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 are moved towards the image side along the third optical axis a3.

[0289] Table 3.1 shows the optical parameters of each lens and reflective element in an optical lens 11 provided in the embodiment three of the present application.

[0290] Table 3.1

[0291] Wherein, the description about Table 2.1 is the same as the description about Table 2.1, and the description about Table 1.1 in the above embodiment one can be referred to.

[0292] Table 3.2 shows the aspherical coefficients of each lens in the optical lens 11 provided by the embodiment three of the present application.

[0293] Table 3.2

[0294] It can be seen from Table 3.2 that each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, that is, the optical lens 11 includes 22 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical formula (1) in the above embodiment one.

[0295] The optical lens 11 can realize the characteristics of small volume and large target surface by using the above lenses, and the optical parameters of the optical lens 11 composed of the above lenses can be seen from Table 3.3 shown below.

[0296] Table 3.3 shows the optical parameters of the optical lens provided by the embodiment three of the present application.

[0297] Table 3.3

[0298] In the embodiment three of the present application, the ratio of ft to fw is 2.00, the ratio of ft1 to fw1 is 1.08, the ratio of Mt to Mw is 1.85, the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is 12.57, the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to ft1 is 11.65, the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.31, the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.48, the ratio of ft to the focal length of the third lens group 130 is -3.18, the ratio of fw to the focal length of the third lens group 130 is -1.59, the ratio of TTL to IH is 3.32, the ratio of FOVt to FOVw is 0.49, and (TTL / IH) x (FOVt / FOVw) is 1.64.

[0299] As shown in FIGS. 10C and 10D, FIG. 10C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 10D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIGS. 10C and 10D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 10C and 10D, the optical lens 11 provided in the embodiment of the present application can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0300] Embodiment Four

[0301] In the embodiment of the present application, the lens group in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140, and the fifth lens group 150 can refer to the above-mentioned embodiment one. When the optical lens 11 is at the wide-angle end state, as shown in FIG. 11A, the second lens group 120 is located on the light-in side of the first light-turning piece 31. When the optical lens 11 is at the telephoto end state, as shown in FIG. 11B, the first lens group 110 is located on the light-in side of the first light-turning piece 31.

[0302] The difference between the embodiment four and the above-mentioned embodiment one is that:

[0303] As shown in FIGS. 11A and 11B, when the optical lens 11 switches from the wide-angle end state to the telephoto end state, the second lens group 120 moves out of the light-in side of the first light-turning piece 31 along the first optical axis a1, and the first lens group 110 moves to the light-in side of the first light-turning piece 31 along a direction perpendicular to the first optical axis a1. The fourth lens group 140 moves toward the image side along the third optical axis a3, and the fifth lens group 150 and the third lens group 130 move toward the object side along the third optical axis a3. When the optical lens 11 switches from the telephoto end state to the wide-angle end state, the first lens group 110 moves out of the light-in side of the first light-turning piece 31 along the first optical axis a1, and the second lens group 120 moves to the light-in side of the first light-turning piece 31 along a direction perpendicular to the first optical axis a1. The fourth lens group 140 moves toward the object side along the third optical axis a3, and the fifth lens group 150 and the third lens group 130 move toward the image side along the third optical axis a3.

[0304] Table 4.1 shows the optical parameters of each lens and reflective element in an optical lens 11 provided in the embodiment four of the present application.

[0305] Table 4.1

[0306] Wherein, the description about Table 2.1 is the same as the description about Table 2.1, and the description about Table 1.1 in the above embodiment one can be referred to

[0307] Table 4.2 shows the aspherical coefficients of each lens in the optical lens 11 provided by the fourth embodiment of the present application.

[0308] Table 4.2

[0309] It can be seen from Table 4.2 that each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, i.e., the optical lens 11 includes 22 aspherical surfaces. The aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical formula (1) in the above embodiment one.

[0310] The optical lens 11 can realize the characteristics of small volume and large target surface by using the above lenses and the matching of the number of lenses, the focal length, the thickness, the refractive index, the Abbe number, etc. of each lens. The optical parameters of the optical lens 11 composed of the above lenses can be seen from Table 4.3.

[0311] Table 4.3 shows the optical parameters of the optical lens provided by the fourth embodiment of the present application.

[0312] Table 4.3

[0313] In the fourth embodiment of the present application, the ratio of ft to fw is 2.00, the ratio of ft1 to fw1 is 1.10, the ratio of Mt to Mw is 1.81, the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.33, the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.52, the ratio of ft to the focal length of the third lens group 130 is -4.86, the ratio of fw to the focal length of the third lens group 130 is -2.43, the ratio of TTL to IH is 3.31, the ratio of FOVt to FOVw is 0.49, and (TTL / IH) x (FOVt / FOVw) is 1.63.

[0314] As shown in FIG. 11C and FIG. 11D, FIG. 11C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 11D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIG. 11C and FIG. 11D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIG. 11C and FIG. 11D, the optical lens 11 provided in the embodiment can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0315] Embodiment five

[0316] In the embodiment, the lens group in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140 and the fifth lens group 150 can refer to the above-mentioned embodiment one. When the optical lens 11 is at the wide-angle end state, as shown in FIG. 12A, the second lens group 120 is located on the light-in side of the first light folding member 31. When the optical lens 11 is at the telephoto end state, as shown in FIG. 12B, the first lens group 110 is located on the light-in side of the first light folding member 31.

[0317] The difference between the embodiment five and the above-mentioned embodiment one is that:

[0318] As shown in FIG. 12A and FIG. 12B, when the optical lens 11 switches from the wide-angle end state to the telephoto end state, the second lens group 120 moves out of the light-in side of the first light folding member 31 along the first optical axis a1, the first lens group 110 moves to the light-in side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 move towards the object side along the third optical axis a3. When the optical lens 11 switches from the telephoto end state to the wide-angle end state, the second lens group 120 moves to the light-in side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, the first lens group 110 moves out of the light-in side of the first light folding member 31 along a direction perpendicular to the first optical axis a1, and the fifth lens group 150 and the third lens group 130 move towards the image side along the third optical axis a3.

[0319] Table 5.1 shows the optical parameters of each lens and reflective element in an optical lens 11 provided in the embodiment five of the present application.

[0320] Table 5.1

[0321] Wherein, the description of Table 2.1 and the relevant description of Table 2.1 are the same, and the description of Table 1.1 in the above-mentioned embodiment one can be referred to.

[0322] Table 5.2 shows the aspherical coefficients of each lens in the optical lens 11 provided by the embodiment five of the present application.

[0323] Table 5.2

[0324] It can be known from Table 5.2 that each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, that is, the optical lens 11 includes 22 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical formula (1) in the above embodiment one.

[0325] The optical lens 11 can realize the characteristics of small volume and large target surface by adopting the above lenses 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 11 composed of the above lenses can be referred to Table 5.3 shown below.

[0326] Table 5.3 shows the optical parameters of the optical lens provided by the embodiment five of the present application.

[0327] Table 5.3

[0328] In the embodiment five of the present application, the ratio of ft to fw is 2.16, and the ratio of ft1 to fw1 is 1.26. The ratio of Mt to Mw is 1.72, and Mt is 1.76 and Mw is 1.03. The ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is -11.58. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.38, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.67. The ratio of ft to the focal length of the third lens group 130 is -4.82, and the ratio of fw to the focal length of the third lens group 130 is -2.23. The ratio of TTL to IH is 3.29, the ratio of FOVt to FOVw is 0.47, and (TTL / IH) x (FOVt / FOVw) is 1.55.

[0329] As shown in FIGS. 12C and 12D, FIG. 12C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 12D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIGS. 12C and 12D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the tangential field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 12C and 12D, the optical lens 11 provided in the embodiment of the present application can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0330] Embodiment six

[0331] In the embodiment of the present application, the lens group in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140 and the fifth lens group 150 can refer to the above-mentioned embodiment one. As shown in FIG. 13A, when the optical lens 11 is at the wide-angle end, the first lens group 110 and the second lens group 120 are located on the light-incoming side of the first light folding member 31, and the first lens group 110 is located on the light-incoming side of the second lens group 120. As shown in FIG. 13B, when the optical lens 11 is at the telephoto end, the second lens group 120 is located on the light-incoming side of the first light folding member 31, and the first lens group 110 is not located on the light-incoming side of the first light folding member 31.

[0332] The state switching of the optical lens 11 in embodiment six is the same as that of the above-mentioned embodiment one, and the specific description can refer to the above-mentioned description of the state switching of the optical lens 11 in embodiment one.

[0333] Table 6.1 shows the optical parameters of each lens and reflective element in an optical lens 11 provided in the embodiment six of the present application.

[0334] Table 6.1

[0335] The description of Table 2.1 and the related description of Table 2.1 are the same, and the specific description can refer to the description of Table 1.1 in the above-mentioned embodiment one.

[0336] Table 6.2 shows the aspheric coefficients of each lens in an optical lens 11 provided in the embodiment six of the present application.

[0337] Table 6.2

[0338] As shown in Table 6.2, each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, i.e., the optical lens 11 includes 22 aspherical surfaces. The aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical surface formula (1) in Embodiment 1.

[0339] The optical lens 11 can achieve small size and large target surface by using the lenses described above and by matching the focal length, thickness, refractive index, Abbe number, etc. of each lens. The optical parameters of the optical lens 11 composed of the lenses described above are shown in Table 6.3 below.

[0340] Table 6.3 shows the optical parameters of the optical lens provided in Embodiment 6.

[0341] Table 6.3

[0342] In Embodiment 6, the ratio of ft to fw is 2.3, and the ratio of ft1 to fw1 is 1.05. The ratio of Mt to Mw is 2.19, and Mt is 1.05 and Mw is 2.29. The ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is 25.75, and the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to ft1 is 24.50. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.40, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.71. The ratio of ft to the focal length of the third lens group 130 is -5.18, and the ratio of fw to the focal length of the third lens group 130 is -2.25. The ratio of TTL to IH is 3.38, the ratio of FOVt to FOVw is 0.46, and (TTL / IH) x (FOVt / FOVw) is 1.56.

[0343] As shown in FIGS. 13C and 13D, FIG. 13C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 at the wide-angle end, and FIG. 13D is a curve diagram of the modulation transfer function of the optical lens 11 at the telephoto end. The abscissa in FIGS. 13C and 13D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the tangential field of view, and the dashed line represents the sagittal field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As shown in FIGS. 13C and 13D, the optical lens 11 provided in the present application can achieve better performance at a common frequency, and the imaging effect is good. High-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0344] Embodiment 7

[0345] In the embodiment, the lens group in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140 and the fifth lens group 150 can refer to the above-mentioned embodiment one. As shown in FIG. 14A, when the optical lens 11 is in the wide-angle end state, the first lens group 110 and the second lens group 120 are located on the light-incoming side of the first folding member 31, and the first lens group 110 is located on the light-incoming side of the second lens group 120. As shown in FIG. 14B, when the optical lens 11 is in the long-focus end state, the second lens group 120 is located on the light-incoming side of the first folding member 31, and the first lens group 110 is not located on the light-incoming side of the first folding member 31.

[0346] The state switching of the optical lens 11 in the embodiment seven is the same as the above-mentioned embodiment one, and the specific description can refer to the above-mentioned description about the state switching of the optical lens 11 in the embodiment one.

[0347] Table 7.1 shows the optical parameters of each lens and reflective element in the optical lens 11 provided in the embodiment seven of the present application.

[0348] Table 7.1

[0349] The description about Table 2.1 is the same as the description about Table 2.1, and the specific description can refer to the description about Table 1.1 in the above-mentioned embodiment one.

[0350] Table 7.2 shows the aspheric coefficients of each lens in the optical lens 11 provided in the embodiment seven of the present application.

[0351] Table 7.2

[0352] As shown in Table 7.2, each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspheric lens, that is, the optical lens 11 includes 22 aspheric lenses, and the aspheric surface type Z of each lens in the optical lens 11 can be calculated by the aspheric formula (1) in the above-mentioned embodiment one.

[0353] By using the above-mentioned lenses, the optical lens 11 can realize the characteristics of small volume and large target surface, and the optical parameters of the optical lens 11 composed of the above-mentioned lenses can refer to Table 7.3 shown below.

[0354] Table 7.3 shows the optical parameters of the optical lens provided in the embodiment seven of the present application.

[0355] Table 7.3

[0356] In the seventh embodiment of the present application, the ratio of ft to fw is 2.4, and the ratio of ft1 to fw1 is 1.07. The ratio of Mt to Mw is 2.24, the ratio of the focal length f11 of the first lens group 110 moving to the light-incoming side of the first folding element 31 to fw1 is 19.37, and the ratio of the focal length f11 of the first lens group 110 moving to the light-incoming side of the first folding element 31 to ft1 is 18.10. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.41, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.73. The ratio of ft to the focal length of the third lens group 130 is -5.90, and the ratio of fw to the focal length of the third lens group 130 is -2.46. The ratio of TTL to IH is 3.39, the ratio of FOVt to FOVw is 0.45, and (TTL / IH) x (FOVt / FOVw) is 1.51.

[0357] As shown in FIGS. 14C and 14D, FIG. 14C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end, and FIG. 14D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIGS. 14C and 14D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dashed line in the figure represents the meridional field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to this diff. limit curve, the better the imaging quality. As can be seen from FIGS. 14C and 14D, the optical lens 11 provided by the present application can achieve better performance at the normal frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0358] Embodiment eight

[0359] In the embodiments of the present application, the lens groups in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140, and the fifth lens group 150 can refer to the above-mentioned embodiment one. As shown in FIGS. 15A and 15B, when the optical lens 11 is at the wide-angle end, as shown in FIG. 15A, the first lens group 110 and the second lens group 120 are both located on the light-incoming side of the first folding element 31, and the first lens group 110 is located on the light-incoming side of the second lens group 120. When the optical lens 11 is at the telephoto end, as shown in FIG. 15B, the second lens group 120 is located on the light-incoming side of the first folding element 31, and the first lens group 110 is not on the light-incoming side of the first folding element 31.

[0360] The state switching of the optical lens 11 in the sixth embodiment is the same as that of the above-mentioned embodiment one, and can refer to the above-mentioned description of the state switching of the optical lens 11 in the embodiment one.

[0361] Table 8.1 shows optical parameters of each lens and reflective element in an optical lens 11 provided by Embodiment Eight of the present application.

[0362] Table 8.1

[0363] Wherein, the description about Table 2.1 is the same as the description about Table 2.1, and the description about Table 1.1 in Embodiment One can be referred to.

[0364] Table 8.2 shows aspherical coefficients of each lens in an optical lens 11 provided by Embodiment Eight of the present application.

[0365] Table 8.2

[0366] As can be seen from Table 8.2, each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, that is, the optical lens 11 includes 22 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical formula (1) in Embodiment One.

[0367] The optical lens 11 can realize small volume and large target surface and other characteristics by using the above lenses, and the focal length, thickness, refractive index, Abbe number and other parameters of each lens. The optical parameters of the optical lens 11 composed of the above lenses can be seen from Table 8.3.

[0368] Table 8.3 shows optical parameters of an optical lens provided by Embodiment Eight of the present application.

[0369] Table 8.3

[0370] In the eighth embodiment, the ratio of ft to fw is 2.60, and the ratio of ft1 to fw1 is 1.08. The ratio of Mt to Mw is 2.40, where Mt is 2.20 and Mw is 0.92. The ratio of the focal length f11 of the first lens group 110 moving to the light-incoming side of the first folding element 31 to fw1 is 16.82, and the ratio of the focal length f11 of the first lens group 110 moving to the light-incoming side of the first folding element 31 to ft1 is 15.5. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.42, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.76. The ratio of ft to the focal length of the third lens group 130 is -6.19, and the ratio of fw to the focal length of the third lens group 130 is -2.38. The ratio of TTL to IH is 3.42, the ratio of FOVt to FOVw is 0.42, and (TTL / IH) x (FOVt / FOVw) is 1.42.

[0371] As shown in FIGS. 15C and 15D, FIG. 15C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 at the wide-angle end, and FIG. 15D is a curve diagram of the modulation transfer function of the optical lens 11 at the telephoto end. The abscissa of FIGS. 15C and 15D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the tangential field of view, and the dashed line in the figure represents the sagittal field of view. The diff. limit in the figure represents the modulation transfer function of the imaging system for an infinitesimal object point, and the closer to the diff. limit curve, the better the imaging quality. As can be seen from FIGS. 15C and 15D, the optical lens 11 provided by the present application can achieve better performance at a common frequency, and the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0372] Embodiment Nine

[0373] In the embodiments of the present application, the lens groups in the first lens group 110, the second lens group 120, the third lens group 130, the fourth lens group 140, and the fifth lens group 150 can refer to the above-mentioned embodiment one. As shown in FIG. 16A, when the optical lens 11 is at the wide-angle end, the first lens group 110 and the second lens group 120 are both located on the light-incoming side of the first folding element 31, and the first lens group 110 is located on the light-incoming side of the second lens group 120. As shown in FIG. 16B, when the optical lens 11 is at the telephoto end, the second lens group 120 is located on the light-incoming side of the first folding element 31, and the first lens group 110 is not on the light-incoming side of the first folding element 31.

[0374] In the embodiment six, the state switching of the optical lens 11 is the same as that of the above-mentioned embodiment one, and can refer to the above-mentioned description of the state switching of the optical lens 11 in the embodiment one.

[0375] Table 9.1 shows optical parameters of each lens and reflective element in the optical lens 11 provided in Embodiment Nine of the present application.

[0376] Table 9.1

[0377] Wherein, the description about Table 2.1 is the same as the relevant description to Table 2.1, and the description to Table 1.1 in Embodiment One above can be referred to.

[0378] Table 9.2 shows aspherical coefficients of each lens in the optical lens 11 provided in Embodiment Nine of the present application.

[0379] Table 9.2

[0380] As can be seen from Table 9.2, each lens in the first zoom lens group 21 and the second zoom lens group 22 is an aspherical lens, i.e., the optical lens 11 includes 22 aspherical surfaces, and the aspherical surface type Z of each lens in the optical lens 11 can be calculated by the aspherical formula (1) in Embodiment One above.

[0381] The optical lens 11 can realize small volume and large target surface and other characteristics by using the lenses above and the matching of the focal length, thickness, refractive index, Abbe number and other parameters of each lens. The optical parameters of the optical lens 11 composed of the lenses above can be seen from Table 9.3 below.

[0382] Table 9.3 shows optical parameters of an optical lens provided in Embodiment Nine 2.1 of the present application.

[0383] Table 9.3

[0384] In Embodiment Nine of the present application, the ratio of ft to fw is 2.76, and the ratio of ft1 to fw1 is 1.10. The ratio of Mt to Mw is 2.54, and Mt is 2.08 and Mw is 0.82. The ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to fw1 is 18.38, and the ratio of the focal length f11 of the first lens group 110 moving to the light side of the first light folding member 31 to ft1 is 16.77. The ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to d1 is 0.42, and the ratio of the maximum moving distance of the lens group in the second zoom lens group 22 to IH is 0.77. The ratio of ft to the focal length of the third lens group 130 is -6.28, and the ratio of fw to the focal length of the third lens group 130 is -2.26. The ratio of TTL to IH is 3.43, the ratio of FOVt to FOVw is 0.41, and (TTL / IH) x (FOVt / FOVw) is 1.40.

[0385] As shown in FIG. 16C and FIG. 16D, FIG. 16C is a curve diagram of the modulation transfer function (MTF) of the optical lens 11 when the optical lens 11 is at the wide-angle end. FIG. 16D is a curve diagram of the modulation transfer function of the optical lens 11 when the optical lens 11 is at the telephoto end. The abscissa of FIG. 16C and FIG. 16D is spatial frequency, and the ordinate is modulation contrast. The solid line in the figure represents the sagittal field of view, and the dotted line in the figure represents the meridional field of view. 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. 16C and FIG. 16D, the optical lens 11 provided by the present application can achieve better performance at a common frequency, the imaging effect is better, and high-quality imaging can be achieved at the wide-angle end and the telephoto end.

[0386] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical scope disclosed by the present application 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, Comprise: a first zoom lens group, a first light folding member, and a second zoom lens group; the first zoom lens group comprises a first lens group and a second lens group, at least one of the first lens group and the second lens group is arranged on the light entrance side of the first light folding member; the first lens group has a first optical axis, and the second lens group has a second optical axis; the first optical axis is parallel to the second optical axis; at least one of the first lens group and the second lens group is movable along a direction perpendicular to the first optical axis to change the focal length of the optical lens; wherein when the first lens group or the second lens group is located on the light entrance side of the first light folding member, the first lens group and the second lens group do not overlap along the direction of the first optical axis; the second zoom lens group is arranged on the image side of the first light folding member; the second zoom lens group comprises a third lens group; the third lens group has a third optical axis; the first optical axis and the second optical axis are perpendicular to the third optical axis respectively; the third lens group is movable along the third optical axis to change the focal length of the optical lens.

2. The optical lens of claim 1, wherein, At least one of the first lens group and the second lens group moves from the light entrance side of the first light folding member to the image side of the optical lens along a direction perpendicular to the first optical axis; Or, moves from the image side of the optical lens to the light entrance side of the first light folding member.

3. The optical lens according to claim 1 or 2, characterized in that, The first lens group has positive refractive power, and the second lens group has positive refractive power; When the optical lens is in a first state, the first lens group and the second lens group are both located on the light entrance side of the first light folding member, and the first optical axis and the second optical axis coincide; The focal length of the first zoom lens group located on the light entrance side of the first light folding member is fw1, and the focal length of the optical lens is fw; When the optical lens is in a second state, the second lens group is located on the light entrance side of the first light folding member; the focal length of the first zoom lens group located on the light entrance side of the first light folding member is ft1, and the focal length of the optical lens is ft; wherein ft>fw, and ft1>fw1.

4. The optical lens according to claim 1 or 2, characterized in that, The first lens group has negative refractive power, and the second lens group has positive refractive power; When the optical lens is in a first state, the second lens group is located on the light entrance side of the first light folding member; When the optical lens is in a second state, the first lens group and the second lens group are both located on the light entrance side of the first light folding member, and the first optical axis and the second optical axis coincide.

5. The optical lens of claim 1 or 2, wherein, The first lens group has positive refractive power, and the second lens group has positive refractive power; When the optical lens is in a first state, the second lens group is located on the light entrance side of the first light folding member; When the optical lens is in a second state, the first lens group is located on the light entrance side of the first light folding member.

6. The optical lens according to any one of claims 3 to 5, characterized in that, The second zoom lens group comprises a fourth lens group, a fifth lens group, and the third lens group arranged in sequence along the third optical axis; During the zooming process from the first state to the second state of the optical lens, the fifth lens group and the third lens group are both moved along the third optical axis to the direction close to the first light folding member; In a zooming process from the second state to the first state, the fifth lens group and the third lens group are moved along the third optical axis away from the first light folding member.

7. The optical lens according to any one of claims 1 to 6, characterized in that, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the lens group farthest from the first light folding member in the second zoom lens group has negative refractive power.

8. The optical lens according to any one of claims 1 to 7, characterized in that, The second zoom lens group is composed of a fourth lens group, a fifth lens group and the third lens group arranged along the third optical axis in sequence; the fifth lens group is movable along the third optical axis; The fourth lens group has negative refractive power, the fifth lens group has positive refractive power, and the third lens has negative refractive power.

9. The optical lens of any of claims 1-8, wherein, At least one of the first lens group and the second lens group is arranged on the light-incident side of the first light folding member, comprising: When the optical lens is in the first state, the first lens group and the second lens group are both located on the light-incident side of the first light folding member, and the first optical axis and the second optical axis coincide; When the optical lens is in the second state, the first lens group is located on the light-incident side of the first light folding member; In a zooming process from the first state to the second state, the second lens group is moved out of the light-incident side of the first light folding member along a direction perpendicular to the first optical axis; In a zooming process from the second state to the first state, the second lens group is moved to the light-incident side of the first light folding member along a direction perpendicular to the first optical axis, so that the first optical axis and the second optical axis coincide.

10. The optical lens according to any one of claims 1 to 8, characterized in that, At least one of the first lens group and the second lens group is arranged on the light-incident side of the first light folding member, comprising: When the optical lens is in the first state, the first lens group is located on the light-incident side of the first light folding member; When the optical lens is in the second state, the first lens group and the second lens group are both located on the light-incident side of the first light folding member, and the first optical axis and the second optical axis coincide; In a zooming process from the first state to the second state, the second lens group is moved to the light-incident side of the first light folding member along a direction perpendicular to the first optical axis, so that the first optical axis and the second optical axis coincide; In a zooming process from the second state to the first state, the second lens group is moved out of the light-incident side of the first light folding member along a direction perpendicular to the first optical axis.

11. The optical lens of any of claims 1-8, wherein, The focal length of the first lens group and the focal length of the second lens group are different; At least one of the first lens group and the second lens group is arranged on the light-incident side of the first light folding member, comprising: When the optical lens is in the first state, the first lens group is located on the light-incident side of the first light folding member; When the optical lens is in the second state, the second lens group is located on the light-incident side of the first light folding member; During the zooming process from the first state to the second state, the second lens group moves to the light-incident side of the first light-turning piece in a direction perpendicular to the first optical axis, and the first lens group moves away from the light-incident side of the first light-turning piece in a direction perpendicular to the first optical axis. During the zooming process from the second state to the first state, the first lens group moves to the light-incident side of the first light-turning piece in a direction perpendicular to the first optical axis, and the second lens group moves away from the light-incident side of the first light-turning piece in a direction perpendicular to the first optical axis.

12. The optical lens of any of claims 1-11, wherein, The optical lens further comprises a second light-turning piece; the second light-turning piece is located on the image side of the second zoom lens group.

13. The optical lens of any of claims 1-12, wherein, The first light-turning piece comprises a prism or a mirror.

14. The optical lens of any of claims 1-13, wherein, When the optical lens is at the telephoto end, the focal length of the optical lens is ft; when the optical lens is at the wide-angle end, the focal length of the optical lens is fw; ft and fw satisfy: 1 < ft / fw ≤ 4.

15. The optical lens of any of claims 1-14, wherein, When the optical lens is at the telephoto end, the focal length of the optical lens is ft; when the optical lens is at the wide-angle end, the focal length of the optical lens is fw; ft and fw satisfy: 1.5 ≤ ft / fw ≤ 2.

5.

16. The optical lens of any of claims 1-15, wherein, When the optical lens is at the telephoto end, the focal length of the first zoom lens group located on the light-incident side of the first light-turning piece is ft1; when the optical lens is at the wide-angle end, the focal length of the first zoom lens group located on the light-incident side of the first light-turning piece is fw1; ft1 and fw1 satisfy: 1 < ft1 / fw1 ≤ 1.

5.

17. The optical lens of any of claims 1-16, wherein, When the optical lens is at the telephoto end, the cascade magnification of the second zoom lens group to the first zoom lens group located on the light-incident side of the first light-turning piece is Mt, and when the optical lens is at the wide-angle end, the cascade magnification of the second zoom lens group to the first zoom lens group located on the light-incident side of the first light-turning piece is Mw; Mt and Mw satisfy: 1.5 ≤ Mt / Mw ≤ 3.

5.

18. The optical lens of claim 9 or 10, wherein, When the optical lens is at the telephoto end, the focal length of the first zoom lens group located on the light-incident side of the first light-turning piece is ft1, and the focal length of the second lens group is f11; ft1 and f11 satisfy: |f11 / ft1| ≤ 28.

19. The optical lens of claim 9 or 10, wherein, When the optical lens is at the wide-angle end, the focal length of the first zoom lens group located on the light-incident side of the first light-turning piece is fw1, and the focal length of the second lens group is f11; fw1 and f11 satisfy: |f11 / fw1| ≤ 30.

20. The optical lens according to any one of claims 1-19, wherein, When the optical lens is at the wide-angle end, the focal length of the optical lens is fw, and fw satisfies: 15 mm ≤ fw ≤ 30 mm; and / or, When the optical lens is at the telephoto end, the focal length of the optical lens is ft, and ft satisfies: 35 mm ≤ ft ≤ 55 mm.

21. The optical lens according to any one of claims 1-20, wherein, The focal length of the first zoom lens group located on the light entrance side of the first light folding member is fw1 when the optical lens is at the wide-angle end, and fw1 satisfies: 15mm≤fw1≤30mm. And / or, The focal length of the first zoom lens group located on the light entrance side of the first light folding member is ft1 when the optical lens is at the telephoto end, and ft1 satisfies: 15mm≤ft1≤30mm.

22. The optical lens according to any one of claims 1-21, wherein, The magnification of the cascade of the first zoom lens group located on the light entrance side of the first light folding member is Mw when the optical lens is at the wide-angle end, and Mw satisfies: 0.5≤Mw≤1.

5. And / or, The magnification of the cascade of the first zoom lens group located on the light entrance side of the first light folding member is Mt when the optical lens is at the telephoto end, and Mt satisfies: 1.2≤Mt≤2.

8.

23. The optical lens of any of claims 1-22, wherein, The total optical length TTL of the optical lens satisfies: TTL≤51mm.

24. The optical lens of any of claims 1-23, wherein, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the moving distance of the lens group with the largest moving distance in the second zoom lens group is dm, the distance between the first light folding member and the second light folding member is d1, and dm and d1 satisfy: 0.25≤dm / d1≤0.

9.

25. The optical lens of any of claims 1-24, wherein, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the moving distance of the lens group with the largest moving distance in the second zoom lens group is dm, and the imaging target surface size of the optical lens is IH, and dm and IH satisfy: dm / IH≥0.

4.

26. The optical lens of any of claims 1-25, wherein, The distance between the first light folding member and the second light folding member is d1, and the imaging target surface size of the optical lens is IH, and d1 and IH satisfy: d1 / IH≤2.

5.

27. The optical lens of any of claims 1-26, wherein, The moving distance of the lens group with the largest moving distance in the second zoom lens group is dm, and dm satisfies: 5mm≤dm≤15mm.

28. The optical lens of any of claims 1-27, wherein, The distance d1 between the first light folding member and the second light folding member is less than or equal to 30mm.

29. The optical lens of any of claims 1-28, wherein, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the sum of the moving distances of the lens groups in the same direction is greater than or equal to 10mm.

30. The optical lens of any of claims 1-29, wherein, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the focal length of the lens group farthest from the first light folding member in the second zoom lens group is f22, and the focal length of the optical lens is ft when the optical lens is at the telephoto end; f22 and ft satisfy: 2≤|ft / f22|≤8.

31. The optical lens of any of claims 1-30, wherein, The second zoom lens group comprises a plurality of lens groups arranged along the third optical axis; the focal length of the lens group farthest from the first light folding member in the second zoom lens group is f22, and the focal length of the optical lens is fw when the optical lens is at the wide-angle end; f22 and fw satisfy: 1≤|fw / f22|≤4.

32. The optical lens of any of claims 1-31, wherein, An optical total track length of the optical lens is TTL, an imaging target surface size of the optical lens is IH, a wide-angle end field of view of the optical lens is FOVw when the optical lens is at the wide-angle end, and a telephoto end field of view of the optical lens is FOVt when the optical lens is at the telephoto end; TTL, IH, FOVw, and FOVt satisfy: (TTL / IH) x (FOVt / FOVw) ≤ 2.

5.

33. A camera module comprising: An optical lens according to any one of claims 1-32; and an optical sensor disposed on an image side of the optical lens.

34. An electronic device, comprising: A camera module according to claim 33; and a printed circuit board; the camera module and the printed circuit board being electrically connected.

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