Optical lens, camera module and electronic equipment

Abstract

The invention provides an optical lens, a camera module and electronic equipment, the optical lens comprises a first lens group, a second lens group, a light guide module and a rear lens group, when the optical lens is in a first imaging mode, the light guide module is used for reflecting first light from the first lens group to the rear lens group, and the second lens group is used for reflecting second light from the second lens group to the rear lens group; when the optical lens is in a second imaging mode, the light guide module is used for reflecting second light from the second lens group to the rear lens group, and the optical lens has different effective focal lengths in the first imaging mode and the second imaging mode; the rear lens group comprises a third lens group and a fourth lens group which are sequentially arranged in the direction from the object side to the image side, and at least one of the third lens group and the fourth lens group is a focusing lens group capable of moving along the optical axis. The optical zoom function can be realized by using a single camera module, and many defects of a multi-module relay type optical zoom scheme in the prior art can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an optical lens, a camera module and an electronic equipment. Background Art

[0002] Compared with digital zoom, which has image quality loss, optical zoom has no loss of image quality and can significantly improve image quality. It has become a key research direction for improving the camera performance of electronic devices. At present, in order to realize the optical zoom function of portable electronic devices such as mobile phones, multiple camera modules are usually set inside the electronic device. Different camera modules have different focal lengths. The electronic device can switch modules among the multiple camera modules according to the user's shooting distance to realize the relay optical zoom function.

[0003] However, for the above optical zoom solution, multiple camera modules will occupy a large internal space of the device, which is not conducive to the thin and light design of electronic equipment and will also greatly increase the implementation cost. In addition, since the image quality, color and brightness of the image sensors of different camera modules may be different, this will also cause the picture changes during the zoom process to be abrupt, affecting the user experience. Therefore, it is urgent to provide other optical zoom solutions to solve the technical problems related to this aspect. Summary of the invention

[0004] The embodiments of the present application provide an optical lens, a camera module and an electronic device. By improving the structure of the optical lens, the optical zoom function can be achieved using a single camera module, which can solve many shortcomings of the multi-module relay optical zoom solution in the prior art.

[0005] In a first aspect, an optical lens is provided, comprising: a first lens group, a second lens group, a light guide module and a rear lens group, the optical lens comprising a first imaging mode and a second imaging mode, wherein the first lens group and the second lens group are arranged on the object side of the light guide module; when the optical lens is in the first imaging mode, the light guide module is used to reflect a first light from the first lens group to the rear lens group, and when the optical lens is in the second imaging mode, the light guide module is used to reflect a second light from the second lens group to the rear lens group, and the optical lens has different effective focal lengths in the first imaging mode and the second imaging mode; the rear lens group comprises a third lens group and a fourth lens group arranged in sequence from the object side to the image side, and at least one lens group of the third lens group and the fourth lens group is a focusing lens group movable along the optical axis.

[0006] The optical lens provided in the embodiment of the present application includes a first lens group, a second lens group, a light guide module and a rear lens group, wherein the first lens group and the second lens group are arranged in parallel on the object side of the light guide module as a front lens group, and the rear lens group is arranged on the image side of the light guide module. The light guide module can selectively transmit the light from the first lens group or the second lens group to the rear lens group, so that the optical lens can be imaged through the first lens group or the second lens group, that is, the optical lens can enter the first imaging mode or the second imaging mode, and the optical lens has different effective focal lengths in the first imaging mode and in the second imaging mode, that is, the optical lens has different effective focal lengths when the rear lens group receives light from different front lens groups, thereby enabling the optical lens to have optical zoom capability, and the optical lens can use different focal lengths (i.e., use different front lens groups, or enter different imaging modes) for shooting in different shooting scenes, so that higher quality images can be obtained, the scene adaptability of the optical lens is better, and the user's shooting experience is greatly improved.

[0007] On this basis, the optical zoom function can be achieved through a single camera module, thus solving the problems of high implementation cost and large volume caused by the existing optical zoom that can only be achieved through multiple camera modules in relay. In addition, the light from different front lens groups can be projected onto the same image sensor. While achieving optical zoom, there is no problem of switching between multiple image sensors, so the zoom process will not be abrupt, thereby ensuring user experience.

[0008] The rear lens group of the optical lens provided in the embodiment of the present application includes a third lens group and a fourth lens group, at least one of which is a focus lens group that can move forward and backward along the optical axis. As a result, the optical lens also has an automatic focusing function, so that the optical lens can achieve long-distance telephoto shooting, and also has a strong close-up (macro) shooting capability, achieving wide object distance imaging from long-distance to close-up, and has high imaging quality and high imaging clarity.

[0009] In a possible implementation, the focal length of the third lens group is f3, and in the second imaging mode, when the optical lens switches from focusing on infinity to focusing on macro, the distance that the third lens group needs to move toward the object side is Lm, and when the optical lens switches from the second imaging mode to the first imaging mode, the focusing distance that the third lens group needs to move is L1, wherein f3, Lm and L1 satisfy: <f3 / (Lm+L1)<15。

[0010] The embodiment of the present application can take into account the size (length) and shooting effect of the optical lens by constraining the relevant parameters as above. Through the above constraints, on the one hand, the optical lens can be made not too long, so that space can be freed up for the miniaturization design of electronic equipment. On the other hand, the optical lens can not only realize the functions of telephoto shooting and macro shooting, but also have a larger magnification under macro shooting, so that the optical lens has a better imaging effect.

[0011] In a possible implementation, the focal lengths of the second lens group, the third lens group, and the fourth lens group are f2, f3, and f4, respectively, wherein f2, f3, and f4 satisfy: 0.5<(f3-f4) / f2<5.

[0012] By constraining the focal length of each lens group as above, the present application can balance the aberration and chromatic aberration in the two imaging modes, so that the optical lens can have a better imaging effect in both imaging modes. And it can prevent sudden changes in the picture before and after the mode switching (i.e. during the zooming process), thereby improving the user experience.

[0013] In a possible implementation manner, the focal lengths of the first lens group and the second lens group are different.

[0014] Through the above arrangement, the optical lens can more easily obtain different effective focal lengths when imaging through the first lens group and when imaging through the second lens group, which can reduce the difficulty of optical path design.

[0015] In a possible implementation manner, the focal length of one of the third lens group and the fourth lens group is positive, and the focal length of the other lens group is negative.

[0016] A positive focal length of the lens group will have a positive effect on the aberration, and a negative focal length of the lens group will have a negative effect on the aberration. The present application can cancel out the aberrations brought by the two lens groups by combining the focal lengths of the third lens group and the fourth lens group in a positive and negative manner, that is, the optical lens can obtain smaller aberrations, which is beneficial to improving the imaging quality of the lens.

[0017] For example, the focal length of the third lens group is positive, and the focal length of the fourth lens group is negative; or, the focal length of the third lens group is negative, and the focal length of the fourth lens group is positive.

[0018] In a possible implementation, the optical lens further includes a second reflector located on the image side of the fourth lens group, and the second reflector is used to deflect light from the fourth lens group.

[0019] The embodiment of the present application deflects the propagation angle of the light by additionally setting a reflector at the rear end of the optical path, so that the placement direction of the image sensor can be flexibly adjusted to achieve better space utilization. At this time, the light can be deflected 180 degrees in total front and back, and the plane where the image sensor is located can be parallel to the display screen of the electronic device, so that the setting of the image sensor is no longer limited by the thickness of the electronic device, and a larger image sensor can be set, which is conducive to improving the imaging quality.

[0020] Exemplarily, the second reflective element may be a reflector or a prism.

[0021] In a possible implementation, the second reflective element includes a prism, the prism having an incident surface, a first reflective surface, and a second reflective surface, and the prism is configured such that: light from the fourth lens group is incident on the interior of the prism through the incident surface, and then is reflected by the first reflective surface and the second reflective surface in sequence, and then is emitted from the first reflective surface to the image sensor.

[0022] Through the above arrangement, the image sensor can be tilted relative to the thickness direction of the module. In this way, when the image sensor is used for optical image stabilization, the anti-shake motor that drives the image sensor for shake compensation can also be tilted due to the tilted arrangement of the image sensor. This can save space in the thickness direction of the module and will not occupy additional or excessive thickness space due to the arrangement of the anti-shake motor. That is, the size of the camera module in the thickness direction can be reduced, which is beneficial to reducing the volume of the camera module, thereby facilitating the lightweight design of electronic equipment.

[0023] In one possible implementation, the light guide module includes: a movable reflector that can move between a first position and a second position, and when located at the first position, the movable reflector is used to reflect the first light to the rear lens group, and when located at the second position, the movable reflector is used to reflect the second light to the rear lens group.

[0024] In a possible implementation, the light guide module further includes: a first reflector, located between the second lens group and the movable reflector, and configured to reflect the second light to the movable reflector.

[0025] By setting a first reflector to reflect the second light to the movable reflector, the moving range of the movable reflector can be reduced, so that the movable reflector only needs to deflect the reflection angle to achieve the switching between the first light and the second light without moving over a large range, thereby simplifying the driving design and helping to reduce the volume of the lens or module.

[0026] In a possible implementation, when the movable reflector is located at the first position, the reflection plane of the movable reflector is parallel to the optical axis of the second light ray; when the movable reflector is located at the second position, the reflection plane of the movable reflector is parallel to the optical axis of the first light ray.

[0027] In a possible implementation, the light guide module includes a first reflector and a movable reflector, wherein the first reflector is used to reflect the second light to the rear lens group; the movable reflector can move between a first position and a second position, and when located at the first position, the movable reflector reflects the first light to the rear lens group and blocks the second light, and when located at the second position, the movable reflector avoids the second light.

[0028] In a possible implementation, the light guide module includes a first reflector and a controllable transflective mirror, wherein the first reflector is used to reflect the second light to the rear lens group; the controllable transflective mirror is located between the first reflector and the rear lens group, and the controllable transflective mirror has a transmission mode and a reflection mode. When in the reflection mode, the controllable transflective mirror reflects the first light to the rear lens group and blocks the second light. When in the transmission mode, the second light is transmitted through the controllable transflective mirror toward the rear lens group.

[0029] In a possible implementation, in the first imaging mode, the equivalent focal length of the optical lens is F1, and in the second imaging mode, the equivalent focal length of the optical lens is F2, and F1 and F2 satisfy the following relationship: 1<F2 / F1<10.

[0030] Through the above settings, the optical lens can have a larger zoom ratio, which can improve the shooting performance of the optical lens, meet the shooting needs of users at different shooting distances, and thus ensure user experience. For example, the ratio of F2 to F1 can be 2, 3, 4, 5, 6 or 7, etc.

[0031] In one possible implementation, the optical lens also includes a shading member, which is configured such that: when the movable reflector is moved to the second position, the shading member blocks the first light to prevent the first light from entering the movable reflector; and / or when the movable reflector is moved to the first position, the shading member blocks the second light to prevent the second light from entering the movable reflector.

[0032] Through the above settings, the optical lens will not introduce the second light when imaging through the first light (i.e., working in the first imaging mode), which can effectively avoid the interference of the second light on the imaging. The optical lens will not introduce the first light when imaging through the second light (i.e., working in the second imaging mode), which can effectively avoid the interference of the first light on the imaging. In this way, interference between different light rays can be avoided, and the problem of light rays from different front lens groups entering the image sensor at the same time to form ghost images on the image sensor can be avoided, that is, the introduction of stray light can be avoided, which is conducive to improving the quality of imaging.

[0033] In one possible implementation, the shading member includes a shading plate with a variable position, and when the movable reflector is moved to the second position, the shading plate is moved to a third position to block the first light; when the movable reflector is moved to the first position, the shading plate is moved to a fourth position to block the second light.

[0034] The embodiment of the present application achieves shielding of the first light or the second light by setting a variable position shading plate, which can achieve precise control of the light path and ensure a good shielding effect. In addition, the implementation method is simple and easy to implement, which is conducive to saving lens space and implementation costs, and has high operating stability, which is conducive to improving the reliability of the optical lens.

[0035] In a possible implementation, the movable reflector and the shading plate are synchronously driven by the same driving member.

[0036] Through the above settings, the same driving component can be reused to realize the position switching of the shading plate and the movable reflector, that is, there is no need to set up an additional driving component to drive the shading plate, which is beneficial to saving lens space and implementation costs, and synchronous driving is achieved through the same driving component, which is beneficial to quickly respond to the user's switching operations, shorten the time required for switching, and avoid affecting the user's experience due to inconsistent position switching.

[0037] In one possible implementation, the shading plate is fixedly connected to the movable reflector, and the shading plate has a light leakage area; when the movable reflector is moved to the second position, the second light enters the movable reflector through the light leakage area, and the non-light leakage area of ​​the shading plate blocks the first light.

[0038] The embodiment of the present application fixes the shading plate to the movable reflector, which is conducive to synchronously driving the above two components through the same driving member, can save lens space and implementation costs, is conducive to quickly responding to the user's switching operation, and shortens the time required for switching. By setting a light leakage area on the shading plate that is opposite to the position of the movable reflector, the light path can be switched by changing the position of the light leakage area. And due to the existence of the light leakage area, the shading plate can be set between the front lens group and the movable reflector, and the shading plate can cross from one side of the movable reflector to the other side, which facilitates the fixed connection between the shading plate and the movable reflector, and simplifies the connection structure between the two. For example, at this time, the shading plate can be fixedly set on the mounting seat of the movable reflector, thereby achieving a fixed connection between the two.

[0039] In one possible implementation, the shading element includes a shading plate with a variable mode. When the movable reflector is moved to the second position, the second area of ​​the shading plate corresponding to the second lens group is switched to a light-transmitting mode, the second light is emitted toward the movable reflector through the second area, and the shading plate is switched to a light-shielding mode corresponding to the first area of ​​the first lens group to block the first light; when the movable reflector is moved to the first position, the shading plate is switched to a light-transmitting mode corresponding to the first area of ​​the first lens group, the first light is emitted toward the movable reflector through the first area, and the shading plate is switched to a light-shielding mode corresponding to the second area of ​​the second lens group to block the second light.

[0040] Through the above arrangement, the embodiment of the present application can achieve shading effects in different areas by changing the light transmittance properties of different areas. At this time, the shading plate is stationary and does not need to be moved, so there is no need for drive design, which is conducive to simplifying the internal structure of the module.

[0041] In a possible implementation, the light guide module is also used to perform jitter compensation to achieve optical image stabilization. For example, the movable reflector, the first reflector or the controllable transflective mirror is also used to perform jitter compensation to achieve optical image stabilization.

[0042] The light guide module in the embodiment of the present application is movably configured in the lens, and can be moved (for example, rotated or translated) under the drive of the anti-shake motor to perform shake compensation, thereby realizing optical image stabilization. Since the light guide module can selectively reflect the light of the first lens group or the second lens group to the image sensor, the optical lens can realize optical image stabilization through the light guide module regardless of whether it is imaging through the first lens group or the second lens group, that is, regardless of whether the optical lens works in the first imaging mode or the second imaging mode, the optical image stabilization can be realized by the light guide module, which can improve the shooting quality of the optical lens in different usage scenarios. The optical lens provided in the embodiment of the present application can realize optical image stabilization while realizing optical zoom, has good imaging quality, high imaging clarity, and improves the user experience.

[0043] In a possible implementation, the focal length of the first lens group is ELFG1, the focal length of the second lens group is ELFG2, the effective focal length of the optical lens in the first imaging mode is ELF1, and the effective focal length of the optical lens in the second imaging mode is ELF2, wherein ELFG1, ELFG2, ELF1 and ELF2 satisfy the following relationship: EFLG1 / EFL1>0.5, EFLG2 / EFL2>1.0, and EFL1<EFL2.

[0044] Through the above settings, it can be ensured that no matter whether the first lens group or the second lens group is used for imaging, that is, whether the optical lens is working in the first imaging mode or the second imaging mode, the amount of light reflected into the image sensor by the light guide module under different anti-shake states (that is, different positions) will not produce a large difference, that is, it can be ensured that the imaging clarity will not produce a large difference under different anti-shake states, ensuring that the optical lens always has a better imaging quality.

[0045] In a second aspect, a camera module is provided, comprising an image sensor and an optical lens provided by any possible implementation of the first aspect, wherein the optical lens is used to project light onto the image sensor.

[0046] In one possible implementation, the rear lens group has a third optical axis, and the camera module also includes: a prism, the prism having an incident surface, a first reflection surface and a second reflection surface, and the prism is configured as follows: light from the rear lens group is incident on the interior of the prism through the incident surface, and then is reflected by the first reflection surface and the second reflection surface in sequence, and then is emitted from the first reflection surface to the image sensor; the photosensitive surface of the image sensor faces the first reflection surface, and the photosensitive surface is tilted relative to the third optical axis, and the image sensor is also used for jitter compensation to achieve optical image stabilization.

[0047] According to the camera module provided in the embodiment of the present application, after the light from the rear lens group enters the prism, it can be reflected twice by the first reflection surface and the second reflection surface, and then emitted from the first reflection surface to the image sensor. The photosensitive surface of the image sensor faces the first reflection surface, and the photosensitive surface is tilted relative to the third optical axis. The image sensor is usually a sheet structure, and the photosensitive surface is tilted relative to the third optical axis, that is, the image sensor is tilted relative to the third optical axis. The image sensor in the embodiment of the present application is also used for jitter compensation to achieve optical image stabilization. Since the image sensor is tilted, the anti-shake motor that drives the image sensor to perform jitter compensation can also be tilted, thereby saving the space of the module in the thickness direction perpendicular to the third optical axis, and will not occupy additional or excessive thickness space due to the setting of the anti-shake motor, that is, the size of the camera module in the thickness direction can be reduced, which is conducive to reducing the volume of the camera module, thereby bringing convenience to the thin and light design of electronic equipment.

[0048] In a possible implementation, the angle between the photosensitive surface and the third optical axis is θ, 15°≤θ<45°. For example, the value of θ may be 20°, 25°, 27.5°, 30°, 35° or 40°.

[0049] Through the above arrangement, on the one hand, the image sensor can be tilted as much as possible to save thickness and space as much as possible. On the other hand, the angle requirements of optical design can be taken into account, such as facilitating total internal reflection (TIR) ​​of light on the first reflection surface, facilitating light to be emitted from the first reflection surface at a vertical angle, and incident on the photosensitive surface at a vertical angle, that is, the above angle selection can also reduce the difficulty of optical design and is conducive to improving imaging quality.

[0050] In a possible implementation, the second reflection surface is parallel to the third optical axis, the angle between the first reflection surface and the incident surface is α, and the angle between the first reflection surface and the second reflection surface is β, wherein 0°≤|α-2β|≤10°, for example, 0°≤|α-2β|≤5°.

[0051] Because the second reflective surface and the third optical axis are parallel to each other, the values ​​of α and 2β should be as close as possible. The smaller the absolute values ​​of the two, the more likely the light can be emitted from the first reflective surface at a nearly vertical angle. For example, when α=2β, the light can be emitted to the image sensor at a 90-degree angle perpendicular to the first reflective surface. Through the above settings, it is possible to ensure that the light is emitted from the first reflective surface at a vertical angle or nearly vertical, and at this time, it is only necessary to make the photosensitive surface parallel to the first reflective surface to ensure that the emitted light enters the photosensitive surface at a vertical angle or nearly vertical, which helps to reduce the difficulty of optical design.

[0052] In a possible implementation, α=55°, β=27.5° or α=60°, β=30°.

[0053] In a third aspect, an electronic device is provided, comprising a camera module provided by any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0055] Figure 2 It is a structural schematic diagram of a camera module provided in an embodiment of the present application.

[0056] Figure 3 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0057] Figure 4 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0058] Figure 5 This is a structural schematic diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0059] Figure 6 yes Figure 5 The camera module shown is a structural schematic diagram in the second imaging mode.

[0060] Figure 7 This is a structural schematic diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0061] Figure 8 yes Figure 7 The camera module shown is a structural schematic diagram in the second imaging mode.

[0062] Fig. 9 This is a structural schematic diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0063] Fig.10 yes Fig. 9 The camera module shown is a structural schematic diagram in the second imaging mode.

[0064] Fig.11 yes Fig. 9 The structure diagram of another example of the camera module shown in the second imaging mode.

[0065] Fig.12 This is a structural schematic diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0066] Fig.13 yes Fig.12 The camera module shown is a structural schematic diagram in the second imaging mode.

[0067] Fig.14 It is a schematic diagram of the structure of the prism provided in the embodiment of the present application.

[0068] Fig.15 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0069] Fig.16 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0070] Fig.17 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0071] Fig.18 It is a structural schematic diagram of a sunshade provided in an embodiment of the present application.

[0072] Fig.19 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0073] Fig. 20 It is a schematic diagram of the structure of another sunshade provided in an embodiment of the present application.

[0074] Fig.21 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0075] Fig. 22 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0076] Fig.23 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0077] Fig.24 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0078] Fig.25 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0079] Fig.26 It is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0080] Fig. 27 This is a structural schematic diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0081] Fig.28 yes Fig. 27The camera module shown is a structural schematic diagram in the second imaging mode.

[0082] Reference numerals:

[0083] 10. First lens group; 20. Second lens group; 30. Third lens group; 40. Fourth lens group; 50. Light guide module; 51. First reflector; 52. Movable reflector; 53. Controllable reflector; 60. Second reflector; 61. Prism; 611. First reflective surface; 612. Second reflective surface; 613. Incident surface; 63. Third reflector; 70. Fifth lens group; 80. Shading plate; 81. Light hole; 90. Driving member; 91. Mounting seat;

[0084] 100, camera module; 110, optical lens; 111, first lens; 112, second lens; 113, third lens; 114, fourth lens; 115, fifth lens; 116, sixth lens; 117, seventh lens; 118, eighth lens; 119, ninth lens; 120, image sensor; 121, aperture stop; 122, photosensitive surface; 123, tenth lens; 130, filter; 140, first light-transmitting lens; 150, second light-transmitting lens;

[0085] 200, back cover; 300, display screen; 400, middle frame; 1000, electronic equipment;

[0086] OA1, first optical axis; OA2, second optical axis; OA3, third optical axis. DETAILED DESCRIPTION

[0087] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0088] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] In the description of the present application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0091] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0092] For ease of understanding, the technical terms involved in this application are explained and described below.

[0093] Lens: A component that uses the refraction principle of the lens to allow the light of the scene to pass through the lens and form a clear image on the focusing plane.

[0094] Optical axis (OA): The direction in which light is transmitted by an optical system, with reference to the principal ray of the central field of view. For symmetrical transmission systems, it generally coincides with the centerline of rotation of the optical system. For off-axis and reflective systems, the optical axis may also appear as a broken line.

[0095] Object side and image side: With the lens as the boundary, the side where the object is located is the object side, and the surface of the lens close to the object side can be called the object side; with the lens as the boundary, the side where the image of the object is located is the image side, and the surface of the lens close to the image side can be called the image side.

[0096] Focal length: Also known as focal length, it is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the optical center of a lens or lens group to the focal point when an infinitely distant scene forms a clear image on the focal plane through a lens or lens group. It can also be understood as the vertical distance from the optical center of a lens or lens group to the focal plane. From a practical point of view, it can be understood as the distance from the center of the lens to the imaging plane.

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

[0098] Equivalent focal length: Convert the viewing angle of imaging on photosensitive elements of different sizes into the focal length of the optical lens corresponding to the same imaging viewing angle on the 135 camera module. The converted focal length is the 135 equivalent focal length, that is, the equivalent focal length. That is, the 135 camera module is used as a standard to convert the focal length of non-135 camera modules into the focal length of 135 camera modules. Equivalent focal length = effective focal length of the optical lens * focal length coefficient (or focal length multiple), where the focal length coefficient is the ratio of the diagonal length of the sensing element of the non-135 camera module to the diagonal length of the photosensitive element of the 135 camera module. Therefore, the equivalent focal length = effective focal length of the optical lens * diagonal length of the photosensitive element of the 135 camera module / full image height. For example, the effective focal length of the optical lens = 14.8mm, the full image height is 7.0mm, and the diagonal length of the photosensitive element of the 135 specification camera module is 43.27mm, then the equivalent focal length of the optical lens = 14.8*43.27 / 7.0≈91.5mm.

[0099] Focus: Focus is also called light and focusing. The process of changing the distance between the object and the distance between the objects through the camera's focus mechanism to make the image of the object clear is called focusing. Usually, digital cameras have a variety of focusing methods, including automatic focus, manual focus, or multiple focus methods.

[0100] Auto focus (AF): Auto focus uses the principle of light reflection from the object to form an image on the image sensor after the reflected light passes through the lens, and then the object distance of the object is obtained through computer processing, and then the lens is automatically moved according to the object distance to complete the focusing. The function of auto focus is to make objects at different distances appear clear on the image sensor. The camera module usually uses a power structure such as a voice coil motor (VCM) to control the optical lens to move forward and backward along the optical axis to adjust the distance between the lens and the image sensor, thereby achieving auto focus.

[0101] Focal power: It is equal to the difference between the convergence of the image-side beam and the convergence of the object-side beam. It characterizes the ability of the optical system to deflect light. Focal power is usually represented by the letter φ. The refracting spherical focal power φ=(n'-n) / r=n' / f'=-n / f, where n' is the image-side refractive index, n is the object-side refractive index, r is the spherical radius, f' is the image focal length, and f is the object focal length. Generally, the focal power is expressed as the reciprocal of the image-side focal length (the refractive index of air is approximately 1). The above focal power equation is universal for any optical system (without paraxial distinction).

[0102] The focal power represents the ability of an optical system to refract an incident parallel beam. The larger the value of φ, the more the parallel beam is refracted; when φ>0, the refraction is convergent; when φ<0, the refraction is divergent. When φ=0, it corresponds to plane refraction. At this time, the parallel beam along the axis is still a parallel beam along the axis after refraction, and no refraction occurs.

[0103] Refractive index: If light enters a non-absorbing homogeneous material, light reflection and refraction will occur at its interface. The refractive index n is equal to the ratio of the speed of light in a vacuum, c, to the speed of light in the medium, v. In fact, the refractive index is measured by measuring the deflection angle caused by the refraction of the light beam at the interface. The formula describing the deflection is called Snell's law.

[0104] Field of view (FOV): Also known as the field of view. In optical instruments, the angle formed by the two edges of the maximum range of the image of the object that can pass through the lens, with the lens of the optical instrument as the vertex, is called the field of view.

[0105] Aperture stop (STO) is a diaphragm that limits the maximum inclination angle of the marginal light in the imaging beam of an on-axis point, that is, the diaphragm with the smallest incident aperture angle. Here, the aperture refers to the edge, frame or specially set perforated barrier of the optical element in the optical assembly used to limit the imaging beam size or imaging space unit.

[0106] Dispersion: The property of a material's refractive index changing with the frequency of the incident light is called "dispersion". For example, after sunlight passes through a prism, a continuous spectrum of colors arranged in sequence from red to purple is produced. In a broad sense, dispersion not only refers to the decomposition of light waves into a spectrum, but also any physical quantity that changes with frequency (or wavelength) is called dispersion. In the embodiment of the present application, after the complex light enters the lens, since the lens has different refractive indices for light of different frequencies, the propagation directions of various colored lights are deflected to different degrees, and thus they are dispersed when leaving the lens, which is called "dispersion".

[0107] Abbe number: also known as dispersion coefficient, is the difference ratio of the refractive index of optical materials at different wavelengths, representing the degree of dispersion of the material. Abbe number is an important indicator for measuring the imaging quality of a lens. The larger the Abbe number (dispersion coefficient), the less obvious the dispersion, and the better the imaging quality of the lens; the smaller the Abbe number (dispersion coefficient), the more obvious the dispersion, and the worse the imaging quality of the lens.

[0108] Aberration: The paraxial region of an optical system has the properties of an ideal optical system. The paraxial light emitted from a point on the object intersects the image plane at one point (also known as the paraxial image point). However, the light rays that actually pass through different apertures of the lens are unlikely to intersect perfectly at one point, but have a certain deviation from the position of the paraxial image point. These differences are collectively called aberrations.

[0109] Image height (ImgH): refers to the total image height of the image formed by the lens.

[0110] With the continuous development of portable electronic devices such as mobile phones, users have higher and higher requirements for the shooting performance of electronic devices. They not only require electronic devices to achieve functions such as background blur and clear night shooting, but also require electronic devices to achieve telephoto shooting and macro shooting. Zoom capability is one of the important criteria for measuring the performance of electronic devices. Commonly used zoom methods mainly include digital zoom and optical zoom. Among them, digital zoom achieves the purpose of zoom by cropping and enlarging the local imaging of the image sensor, but digital zoom will cause pixel loss, reduce the resolution of the image, and lead to poor image quality.

[0111] Compared with digital zoom, which has image quality loss, optical zoom has no loss of image quality and can significantly improve image quality. It has become a key research direction for improving the camera performance of electronic devices. At present, in order to realize the optical zoom function of portable electronic devices such as mobile phones, multiple camera modules are usually set inside the electronic device. Different camera modules have different focal lengths. The electronic device can switch modules among the multiple camera modules according to the user's shooting distance to realize the relay optical zoom function.

[0112] However, for the above optical zoom solution, multiple camera modules will occupy a large internal space of the device, which is not conducive to the lightweight design of electronic equipment and will also greatly increase the implementation cost. In addition, since the image quality, color and brightness of the image sensors of different camera modules may be different, this will also cause the picture changes in the zoom process (i.e., the module switching process) to be abrupt, affecting the user experience. Based on this, it is urgent to provide other optical zoom solutions to solve the technical problems related to this aspect.

[0113] The embodiments of the present application provide an optical lens, a camera module and an electronic device. By improving the structure of the optical lens, the optical zoom function can be achieved using a single camera module, which can solve many shortcomings of the multi-module relay optical zoom solution in the prior art.

[0114] The embodiment of the present application first provides an electronic device, which may be, for example, a mobile phone, a tablet computer, a laptop computer, a television, a vehicle-mounted device, a wearable device, a personal digital assistant (PDA), a point of sales (POS), a video camera, a camera, a video surveillance device, or other electronic products with a photo or video function. The mobile phone may be, for example, a conventional straight-plate mobile phone, or a foldable mobile phone, such as a small folding mobile phone up and down, a left and right inward folding mobile phone, or a left and right outward folding mobile phone. The wearable device may be, for example, a smart bracelet, a smart watch, a wireless headset, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet, etc. The embodiment of the present application is described by taking the electronic device as a mobile phone as an example.

[0115] Figure 1 1 is a schematic diagram of the structure of the electronic device 1000 provided in the embodiment of the present application. Figure 1 As shown, the electronic device 1000 includes a camera module 100, a back cover 200, a display screen 300, a frame 400, and an image processor (not shown) located inside the device. The back cover 200 and the display screen 300 are fixed to the two sides of the frame 400 in opposite directions, and the back cover 200, the display screen 300 and the frame 400 together enclose the entire inner cavity of the electronic device 1000.

[0116] Among them, the display screen 300 can be used to display images, and can also integrate touch functions to achieve human-computer interaction. The camera module 100 is housed in the inner cavity of the whole machine, and the camera group 100 is used to collect optical information outside the electronic device 1000 and form a corresponding image signal. The image processor is communicatively connected to the camera module 100, and the image processor is used to obtain image signals from the camera module 100 and process the image signals. The communication connection between the camera module 100 and the image processor can include data transmission through electrical connection methods such as wiring, and data transmission can also be achieved through coupling and other methods. It can be understood that the camera module 100 and the image processor can also achieve communication connection through other methods that can achieve data transmission.

[0117] In some examples, the back cover 200 may be provided with a camera hole, and the camera module 100 collects light through the camera hole, and the camera module 100 may be used as a rear camera of the electronic device 1000. Exemplarily, the back cover 200 may include a light-transmitting lens, which is installed in the camera hole to allow light to pass through and is dustproof and waterproof. In some cases, the light-transmitting lens can also be regarded as a part of the camera module 100. The light-transmitting lens can be, for example, Figure 1 The first light-transmitting lens 140 and the second light-transmitting lens 150 are shown in FIG.

[0118] In some examples, the camera module 100 can also be used as a front camera of the electronic device 1000. Exemplarily, the display screen 300 can be provided with a light-transmitting area, and the camera module 100 can collect optical information outside the electronic device 1000 through the light-transmitting area. In other words, the camera module 100 can be used as a front camera module of the electronic device 1000, and can also be used as a rear camera module of the electronic device 1000, which is not strictly limited in the embodiments of the present application.

[0119] In practical applications, the electronic device 1000 may have one camera module, that is, only the camera module 100, or may have two, three, four, five or more camera modules including the camera module 100. When there are multiple camera modules, the multiple camera modules may be arranged on the side of the electronic device 1000 in a certain manner, for example, one or more of them are arranged on the front side where the display screen 300 is located, and used as the front camera, and the remaining one or more camera modules are arranged on the back cover 200, and used as the rear camera.

[0120] In some examples, the electronic device 1000 may include one or more of a front camera (module), a rear camera, a main camera lens, a secondary camera lens, a telephoto lens, an ultra-wide-angle lens, a macro lens, or a depth of field lens, and the camera module 100 may be any one of the above lenses.

[0121] In some examples, the camera module 100 can be electrically connected to the mainboard in the inner cavity of the whole machine. As an embodiment, the camera module 100 can be electrically connected to the mainboard through an electrical connector. For example, the camera module 100 is provided with a male socket of an electrical connector, and the mainboard is provided with a female socket of an electrical connector. The electrical connection between the camera module 100 and the mainboard is achieved by plugging the female socket into the male socket. Among them, a processor is provided on the mainboard, and the camera module 100 is controlled by the processor to capture images. When the user inputs a shooting instruction, the processor receives the shooting instruction and controls the camera module 100 to shoot the subject according to the shooting instruction.

[0122] In some examples, the electronic device 1000 may further include an analog-to-digital converter (also referred to as an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 100 and the image processor. The analog-to-digital converter is used to convert the analog image signal generated by the camera module 100 into a digital image signal and transmit it to the image processor, and then the image processor processes the digital image signal to obtain a processed image signal, and the processed image signal can be displayed as an image or video on a display screen.

[0123] In some examples, the electronic device 1000 may further include a memory (not shown in the figure), the memory is communicatively connected to the image processor, and the image processor transmits the processed image signal to the memory, so that when the image needs to be viewed later, the processed image signal can be searched from the memory at any time and displayed on the display screen. In some embodiments, the image processor also compresses the processed image signal and stores it in the memory to save memory space.

[0124] Figure 2 is a structural diagram of a camera module 100 provided in an embodiment of the present application, such as Figure 2 As shown, the camera module 100 in the embodiment of the present application includes an optical lens 110 and an image sensor 120 .

[0125] Among them, the image sensor 120 is located on the image side of the optical lens 110. The camera module 100 may also include a circuit board (not shown in the figure), and the image sensor 120 may be arranged on the circuit board. Light can pass through the optical lens 110 to illuminate the image sensor 120. Exemplarily, the working principle of the camera module 100 is as follows: the light reflected by the photographed scene generates an optical image through the optical lens 110 and is projected onto the image sensor 120. The image sensor 120 converts the optical image into an electrical signal, that is, an analog image signal and transmits it to the analog-to-digital converter, so as to be converted into a digital image signal through the analog-to-digital converter to the image processor.

[0126] Among them, the image sensor 120 (also called a photosensitive element) is a semiconductor chip, the surface of which contains hundreds of thousands to millions of photodiodes, which will generate electric charge when exposed to light. The image sensor 120 can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). A charge coupled device is made of a highly sensitive semiconductor material that can convert light into electric charge. A charge coupled device is composed of many photosensitive units, usually in units of millions of pixels. When the surface of the charge coupled device (i.e., the photosensitive surface) is exposed to light, each photosensitive unit will reflect the charge on the component, and the signals generated by all the photosensitive units are added together to form a complete picture. Complementary metal oxide semiconductors are mainly semiconductors made of two elements, silicon and germanium, so that N-pole and P-pole semiconductors coexist on the complementary metal oxide semiconductor. The current generated by these two complementary effects can be recorded and interpreted into an image by the processing chip.

[0127] In some examples, the image sensor 120 can move on a plane perpendicular to the thickness direction of the camera module 100 or tilt relative to the thickness direction of the camera module 100 to achieve anti-shake. In this case, the image sensor 120 does not have the ability to move in a direction parallel to the thickness of the camera module 100, or has a weak stroke much smaller than the focus stroke to reduce the thickness of the module. In other embodiments, the image sensor 120 may also be a fixed component and cannot perform shake compensation.

[0128] In some examples, such as Figure 2 As shown, the camera module 100 also includes a filter 130. The filter 130 can be located between the optical lens 110 and the image sensor 120 to filter out unnecessary bands in the light and prevent the image sensor 120 from generating false colors or ripples to improve its effective resolution and color reproduction. Exemplarily, the filter 130 can be an infrared filter, such as an infrared cutoff filter (IRCF). Among them, the filter 130 in this embodiment is an independent component located between the optical lens 110 and the image sensor 120. In other embodiments, the filter 130 can be set at any position before the image sensor 120, or the filter 130 can be cancelled. Instead, at least one optical element of the optical lens 110 is subjected to surface treatment or material treatment to achieve filtering. This application does not strictly limit the specific embodiments of the structural member or structure used to achieve filtering.

[0129] Exemplarily, the filter 130 may be realized by evaporating an infrared radiation (IR) material coating on a blue crystal substrate.

[0130] Exemplarily, the filter 130 may be a white glass filter or a blue glass filter.

[0131] The embodiment of the present application mainly relates to the structural improvement of the optical lens 110. The structural details of the optical lens 110 are introduced below in conjunction with the accompanying drawings. Figure 2 As shown, the optical lens 110 includes a plurality of front lens groups, a light guide module 50 and a rear lens group which are sequentially arranged from the object side to the image side.

[0132] Among them, a plurality of front lens groups including the first lens group 10 and the second lens group 20 are arranged in parallel on the object side of the light guide module 50. The number of the front lens groups may be, for example, two, three, four or more, and the front lens groups are used to receive external ambient light, and the external ambient light may be incident on the light guide module 50 through any of the front lens groups. The plurality of front lens groups may be arranged in one-to-one correspondence with the plurality of camera holes on the electronic device 1000, that is, the plurality of front lens groups may be in one-to-one correspondence with the plurality of light-transmitting lenses, and the external ambient light may be incident on the corresponding front lens group through the light-transmitting lenses, and then be incident on the light guide module 50 through the front lens group.

[0133] For example, Figure 2 As shown, the plurality of front lens groups include a first lens group 10 and a second lens group 20 arranged in parallel on the object side of the light guide module 50. The first lens group 10 is arranged correspondingly to the first light-transmitting lens 140. The ambient light from the outside (referred to as the first light) enters the first lens group 10 through the first light-transmitting lens 140, and after being converged by the first lens group 10, is directed to the light guide module 50. The second lens group 20 is arranged correspondingly to the second light-transmitting lens 150. The ambient light from the outside (referred to as the second light) enters the second lens group 20 through the second light-transmitting lens 150, and after being converged by the second lens group 20, is directed to the light guide module 50.

[0134] The light guide module 50 acts as a switching switch in the optical path. The optical paths where the multiple front lens groups are located can be regarded as multiple upstream optical paths, and the optical path where the rear lens group is located can be regarded as a downstream optical path. The multiple upstream optical paths are connected in parallel to the object side of the light guide module 50, and the downstream optical path is connected to the image side of the light guide module 50. The light guide module 50 is used to make an upstream optical path and a downstream optical path in the multiple upstream optical paths mutually conductive, so that the light in the upstream optical path is transmitted to the downstream optical path. In other words, by operating the light guide module 50, any upstream optical path and the downstream optical path in the multiple upstream optical paths can be connected to each other, and the remaining upstream optical paths and the downstream optical paths can be disconnected from each other. In other words, the light guide module 50 can transmit the light from any front lens group to the rear lens group, and prevent the light from the remaining front lens groups from being transmitted to the rear lens group.

[0135] Under the switching action of the light guide module 50, the optical lens 110 can project light from different front lens groups to the rear lens group, that is, the optical lens 110 can form images through different front lens groups, and the optical lens 110 has different effective focal lengths when forming images through different front lens groups, that is, when the rear lens group receives light from different front lens groups, the optical lens 110 has different effective focal lengths, thereby enabling the optical lens 110 to have the ability of optical zoom.

[0136] For example, Figure 2As shown, the object side of the light guide module 50 is provided with two front lens groups, namely the first lens group 10 and the second lens group 20. The light guide module 50 is used to transmit the first light from the first lens group 10 to the rear lens group, and prevent the second light from the second lens group 20 from being transmitted to the rear lens group. At this time, the optical lens 110 is imaged through the first lens group 10 (first light), and the optical lens 110 enters the first imaging mode. At this time, the effective focal length of the optical lens 110 is EFL1. In addition, the light guide module 50 can also transmit the second light from the second lens group 20 to the rear lens group, and prevent the first light from the first lens group 10 from being transmitted to the rear lens group. At this time, the optical lens 110 can be imaged through the second lens group 20 (second light), and the optical lens 110 enters the second imaging mode. At this time, the effective focal length of the optical lens 110 is EFL2. Since the effective focal length EFL1 is different from the effective focal length EFL2, the optical lens 110 can work at different effective focal lengths, so that the optical lens 110 has optical zoom capability.

[0137] The rear lens group includes a third lens group 30 and a fourth lens group 40 arranged in sequence from the object side to the image side. The light (e.g., the first light or the second light) from the light guide module 50 passes through the third lens group 30 and the fourth lens group 40 in sequence and then is emitted to the image sensor 120. In the embodiment of the present application, at least one lens group of the third lens group 30 and the fourth lens group 40 is a focusing lens group that can move forward and backward along the optical axis. For example, the third lens group 30 and / or the fourth lens group 40 can move forward and backward along the optical axis so that the optical lens 110 has an autofocus function, so that the optical lens 110 can achieve both long-distance telephoto shooting with high imaging quality and strong close-up (macro) shooting capabilities, and achieve wide object distance imaging from long-distance to close-up.

[0138] The optical lens 110 provided in the embodiment of the present application includes a plurality of front lens groups, a light guide module 50 and a rear lens group, wherein the plurality of front lens groups are arranged in parallel on the object side of the light guide module 50, and the rear lens group is arranged on the image side of the light guide module 50. The light guide module 50 can transmit light from different front lens groups to the rear lens group, so that the optical lens 110 can perform imaging through different front lens groups, that is, the optical lens 110 can enter the first imaging mode or the second imaging mode, and the optical lens 110 has different effective focal lengths in the first imaging mode and in the second imaging mode, that is, the optical lens 110 has different effective focal lengths when the rear lens group receives light from different front lens groups, thereby enabling the optical lens 110 to have optical zoom capability, and the optical lens 110 can use different focal lengths (that is, use different front lens groups, or enter different imaging modes) for shooting in different shooting scenes, so that higher quality images can be obtained, the optical lens 110 has better scene adaptability, and the user's shooting experience is greatly improved.

[0139] On this basis, the optical zoom function can be achieved through a single camera module, thus solving the problems of high implementation cost and large volume caused by the existing optical zoom that can only be achieved through multiple camera modules in relay. In addition, the light from different front lens groups can be projected onto the same image sensor. While achieving optical zoom, there is no problem of switching between multiple image sensors, so the zoom process will not be abrupt, thereby ensuring user experience.

[0140] The rear lens group of the optical lens 110 provided in the embodiment of the present application includes a third lens group 30 and a fourth lens group 40, at least one of which is a focus lens group that can move forward and backward along the optical axis. As a result, the optical lens 110 also has an autofocus function, so that the optical lens 110 can not only achieve long-distance telephoto shooting, but also has a strong close-up (macro) shooting capability, and achieves wide object distance imaging from long-distance to close-up, and has high imaging quality and high imaging clarity.

[0141] In some examples, the focal lengths of the front lens groups are different, for example, the focal lengths of the first lens group 10 and the second lens group 20 are different. Through the above arrangement, the optical lens 110 can more easily obtain different effective focal lengths when imaging through different front lens groups, which can reduce the difficulty of optical path design.

[0142] In some examples, the focal lengths of some or all of the lens groups in the multiple front lens groups may be the same. In this case, the effective focal length of the optical lens 110 may be changed by changing the distance between the front lens group and the rear lens group. In other words, for multiple lens groups with the same focal length, the distances between the multiple lens groups and the rear lens group may be different. The above arrangement also enables the optical lens 110 to obtain different effective focal lengths when imaging through different front lens groups.

[0143] In some examples, the first lens group 10 and the second lens group 20 each include at least one imaging lens, and the number of lenses in the first lens group 10 and the second lens group 20 may be the same or different. For example, the first lens group 10 and / or the second lens group 20 may include one, two, three or more lenses. When the first lens group 10 and / or the second lens group 20 include multiple lenses, the multiple lenses may be sequentially spaced and arranged in parallel along the optical axis.

[0144] In some examples, the focal lengths of the first lens group 10 and the second lens group 20 are different, and the focal lengths of the two lenses can be both positive, both negative, or one positive and the other negative. The focal length of the first lens group 10 is greater than the focal length of the second lens group 20, or the focal length of the first lens group 10 can also be less than the focal length of the second lens group 20.

[0145] Figure 3 1 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. Figure 3 As shown, as a special implementation, the focal length of one lens group in the first lens group 10 and the second lens group 20 can be 0, and the focal length of the other lens group can be positive or negative. For example, the focal length of the first lens group 10 is positive, and the focal length of the second lens group 20 is 0. At this time, the second lens group 20 may not have any lens, that is, no lens is set on the optical path where the second lens group 20 is located, and the second lens group 20 is only equivalent to a light entrance. The second light can be directly directed to the light guide module 50 through the optical path or entrance where the second lens group 20 is located. Alternatively, the lens in the second lens group 20 can be a plane mirror with an optical power of 0.

[0146] In some examples, the focal lengths of the first lens group 10 and the second lens group 20 are the same (non-zero), but the distances from the rear lens group are different. Through the above arrangement, the optical lens 110 can also have different effective focal lengths when the first lens group 10 or the second lens group 20 is used for imaging.

[0147] In some examples, the light guide module 50 may include any optical element capable of switching and selecting light from multiple front lens groups. For example, the light guide module 50 may include one or more reflective elements, controllable reflective mirrors, etc. The structural details of the light guide module 50 will be further introduced below through multiple embodiments.

[0148] In some examples, when the light guide module 50 transmits the first light to the rear lens group, the optical lens 110 forms an image through the first lens group 10 and the rear lens group. At this time, the optical lens 110 enters the first imaging mode, and the equivalent focal length of the optical lens 110 is recorded as F1; when the light guide module 50 transmits the second light to the rear lens group, the optical lens 110 forms an image through the second lens group 20 and the rear lens group. At this time, the optical lens 110 enters the second imaging mode, and the equivalent focal length of the optical lens 110 is recorded as F2. F1 and F2 satisfy the following relationship: 1<F2 / F1<10. Through the above settings, the optical lens 110 can have a larger zoom ratio, which can improve the shooting performance of the optical lens 110, meet the shooting needs of users at different shooting distances, and thus ensure user experience. For example, the ratio of F2 to F1 can be 2, 3, 4, 5, 6 or 7, etc.

[0149] In some examples, the light guide module 50 is also used for jitter compensation to achieve optical image stabilization. For example, the movable reflector 52, the first reflector 51 or the controllable transflective mirror 53 described below is also used for jitter compensation to achieve optical image stabilization.

[0150] The light guide module 50 in the embodiment of the present application is movably configured in the lens, and can be moved (for example, rotated or translated) under the drive of the anti-shake motor to perform shake compensation, thereby realizing optical image stabilization. Since the light guide module 50 can selectively reflect the light of the first lens group 10 or the second lens group 20 to the image sensor 120, the optical lens 110 can be imaged through the first lens group 10 or the second lens group 20, that is, whether the optical lens 110 works in the first imaging mode or the second imaging mode, optical image stabilization can be realized through the light guide module 50, which can improve the shooting quality of the optical lens 110 in different usage scenarios. The optical lens 110 provided in the embodiment of the present application can realize optical image stabilization while realizing optical zoom, has good imaging quality, high imaging clarity, and improves the user experience.

[0151] In some examples, the light guide module 50 includes one or more optical elements to achieve light path selection. The one or more optical elements may be, for example, one or more reflectors. The light guide module 50 performs jitter compensation to achieve optical image stabilization. One, multiple or all of the optical elements (e.g., reflectors) in the light guide module 50 may perform jitter compensation to achieve optical image stabilization, and the present application does not impose any limitation on this.

[0152] In some examples, the focal length of the first lens group is ELFG1, the focal length of the second lens group is ELFG2, the effective focal length of the optical lens 110 in the first imaging mode is ELF1, and the effective focal length of the optical lens in the second imaging mode is ELF2, wherein ELFG1, ELFG2, ELF1 and ELF2 satisfy the following relationship: EFLG1 / EFL1>0.5, EFLG2 / EFL2>1.0, and EFL1<EFL2.

[0153] Through the above arrangement, it can be ensured that no matter whether the first lens group 10 or the second lens group 20 is used for imaging, that is, whether the optical lens 110 is working in the first imaging mode or the second imaging mode, the amount of light reflected into the image sensor 120 by the light guide module 50 under different anti-shake states (i.e., different positions) will not produce a large difference, that is, it can be ensured that the imaging clarity will not produce a large difference under different anti-shake states, ensuring that the optical lens 110 always has a better imaging quality.

[0154] In some examples, the third lens group 30 and the fourth lens group 40 each include at least one imaging lens, and the number of lenses in the third lens group 30 and the fourth lens group 40 may be the same or different, for example, the third lens group 30 and / or the fourth lens group 40 may include two, three, four or more lenses. When the third lens group 30 and / or the fourth lens group 40 include multiple lenses, the multiple lenses may be sequentially spaced and arranged in parallel along the optical axis.

[0155] In some examples, the third lens group 30 is a focus lens group that can move forward and backward along the optical axis, and the fourth lens group 40 is a fixed lens group. Alternatively, the third lens group 30 is a fixed lens group, and the fourth lens group 40 is a focus lens group that can move forward and backward along the optical axis. Alternatively, both the third lens group 30 and the fourth lens group 40 are focus lens groups that can move forward and backward along the optical axis.

[0156] In some examples, the third lens group 30 is moved along the optical axis to achieve focusing and macro shooting effects, and the magnification Mag at macro (i.e., the closest focusing distance, such as 60-100 mm) satisfies: 0.2 <Mag<0.5。

[0157] In some examples, the focal length of one of the third lens group 30 and the fourth lens group 40 is positive, and the focal length of the other lens group is negative. Exemplarily, the focal length of the third lens group 30 is positive (for example, 13 mm), and the focal length of the fourth lens group 40 is negative (for example, -11 mm); or, the focal length of the third lens group 30 is negative, and the focal length of the fourth lens group 40 is positive. A positive focal length of a lens group will have a positive effect on aberrations, and a negative focal length of a lens group will have a negative effect on aberrations. The present application can make the aberrations brought by the two lens groups cancel each other by combining the focal lengths of the third lens group 30 and the fourth lens group 40 positively and negatively, that is, the optical lens 110 can obtain smaller aberrations, which is beneficial to improving the imaging quality of the lens.

[0158] In some examples, such as Figure 2 As shown, the plurality of front lens groups are arranged in a straight line as a whole and are arranged on the same side of the light guide module 50. For example, the plurality of front lens groups can be arranged one-to-one with the plurality of camera holes or the plurality of light-transmitting lenses arranged on the back cover 200 of the electronic device 1000. The light guide module 50 can reflect the light from any front lens group to the rear lens group. In other words, at this time, any front lens group and the rear lens group as a whole form a periscope structure layout, thereby making the arrangement position and angle of the optical lens 110 more flexible.

[0159] Figure 4 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. Figure 4 As shown, a plurality of front lens groups may be arranged on two opposite sides of the light guide module 50, for example, the first lens group 10 and the second lens group 20 are arranged on one side of the light guide module 50, and the fifth lens group 70 is arranged on the other side of the light guide module 50, the first lens group 10 is arranged corresponding to the first light-transmitting lens 140 on the back cover 200, the second lens group 20 is arranged corresponding to the second light-transmitting lens 150 on the back cover 200, and the fifth lens group 70 is arranged corresponding to the light-transmitting area on the display screen 300. The light guide module 50 may reflect light from any front lens group to the rear lens group, that is, at this time, any front lens group and the rear lens group as a whole form a periscope structure layout, and the first lens group 10 and the second lens group 20 are equivalent to the rear lens of the electronic device 1000, and the fifth lens group 70 is equivalent to the front lens of the electronic device 1000.

[0160] Figure 5 It is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application in a first imaging mode. Figure 6 yes Figure 5 The camera module 100 shown is a schematic diagram of the structure in the second imaging mode. The camera module 100 provided in this embodiment can be regarded as the aforementioned Figure 2A more specific and lower-level implementation of the camera module 100 shown in FIG. Figure 5 and Figure 6 The structural details of the optical lens 110 are further introduced.

[0161] like Figure 5 and Figure 6 As shown, in this embodiment, the front lens group includes a first lens group 10 and a second lens group 20, the light guide module 50 includes a movable reflector 52, and the rear lens group includes a third lens group 30 and a fourth lens group 40. The first lens group 10 and the second lens group 20 are arranged in parallel on the object side of the movable reflector 52 as non-shared lens groups, and the third lens group 30 and the fourth lens group 40 are arranged in sequence on the image side of the movable reflector 52 along the optical axis direction as shared lens groups.

[0162] The first lens group 10 is located on the object side of the movable reflector 52 for receiving external light. The first lens group 10 includes at least one lens, for example, a first lens 111. In addition, according to specific imaging requirements, the first lens group 10 may also include two, three or more lenses. The second lens group 20 is located on the object side of the movable reflector 52 for receiving external light. The second lens group 20 includes at least one lens, for example, a second lens 112 and a third lens 113. In addition, according to specific imaging requirements, the first lens group 10 may also include one, three or more lenses.

[0163] As a specific implementation of the aforementioned light guide module 50, the light guide module 50 includes a movable reflector 52, which is located between the front lens group and the third lens group 30 and can move (for example, translate) between a first position and a second position. Figure 5 When the movable reflector 52 is in the first position shown, the movable reflector 52 reflects the first light from the first lens group 10 to the third lens group 30, and the optical lens 110 enters the first imaging mode. Figure 6 In the second position shown, the movable reflector 52 reflects the second light from the second lens group 20 to the third lens group 30, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to switch between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0164] When the movable reflecting member 52 is moved to Figure 5In the first position shown, the optical lens 110 works in the first imaging mode, and the first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then sequentially passes through the fourth lens group 40, the second reflector 60, etc. to enter the image sensor 120. The second light from the second lens group 20 cannot enter the third lens group 30, for example, the second light is emitted to other areas inside the electronic device 1000, and is absorbed or consumed. In other words, at this time, the movable reflector 52 connects the first optical axis OA1 corresponding to the first light and the exit optical axis of the movable reflector 52, that is, the third optical axis OA3, while the second optical axis OA2 corresponding to the second light is disconnected from the third optical axis OA3. Exemplarily, in the first imaging mode, the effective focal length EFL1 of the optical lens 110 is 23.3 mm, the full image height ImgH1 is 12.5 mm, and the equivalent focal length F1 is 80.7 mm.

[0165] When the movable reflecting member 52 is moved to Figure 6 In the second position shown, the optical lens 110 works in the second imaging mode, and the second light from the second lens group 20 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40, the second reflector 60, etc. in sequence. The first light from the first lens group 10 cannot enter the third lens group 30. For example, the first light is directed to other areas inside the electronic device 1000 and is absorbed or consumed. In other words, at this time, the movable reflector 52 connects the second optical axis OA2 and the third optical axis OA3, while the first optical axis OA1 and the third optical axis OA3 are disconnected from each other. Exemplarily, in the second imaging mode, the effective focal length EFL2 of the optical lens 110 is 33.2 mm, the full image height ImgH2 is 7.2 mm, and the equivalent focal length F2 is 199.5 mm. The ratio of F2 to F1 is 2.47.

[0166] In some examples, the movable reflector 52 can be driven to move between the first position and the second position by any power component such as a motor, a motor or a cylinder. For example, a motor can be used as a power component to drive the movable reflector 52 to translate between the first position and the second position through a ball screw assembly.

[0167] In some examples, the front lens group may include more lenses, and the movable reflector 52 can be moved (e.g., translated) between more positions including the first position and the second position. For example, the front lens group also includes a fifth lens group 70, and the movable reflector 52 can also be moved to a third position. When the movable reflector 52 is located at the third position, the movable reflector 52 reflects the third light from the fifth lens group 70 to the third lens group 30.

[0168] In some examples, the movable reflective member 52 may be a mirror or a prism, such as a right-angle prism.

[0169] In some examples, the reflective surface of the movable reflector 52 may be a metal reflective film layer prepared by evaporation or sputtering, and the metal may be nickel, aluminum, silver, gold, etc. or alloys thereof.

[0170] In some examples, a high-reflection film layer design may be used to provide a high-reflection film layer on the reflective surface to improve imaging quality.

[0171] In some examples, considering the cutoff ability of the optical system for near-infrared and ultraviolet light, the film layer of the reflective surface can be designed to have high reflectivity for visible light (380nm~780nm) and high transmittance for the ultraviolet band (below 380nm) and near-infrared band (above 780nm), thereby reducing the amount of non-visible light entering the image sensor 120 and improving the imaging quality.

[0172] In some examples, the reflectivity of the reflective surface may be required to be above 95% within the visible light bandwidth, with no reflectivity constraints for ultraviolet and near infrared.

[0173] In some examples, the reflective surface of the movable reflector 52 can be a plane with good processability. In addition, the reflective surface of the movable reflector 52 can also be a spherical surface (concave or convex), a cylindrical surface (curvature in one direction and straight extension in the other direction) or a free-form surface. At this time, the reflective surface of the movable reflector 52 can also correct astigmatism and aberration when realizing light reflection, so as to further improve image quality or reduce volume.

[0174] The rear lens group is located on the image side of the movable reflector 52, and is used to converge the light reflected by the movable reflector 52 and image it on the image sensor 120. The rear lens group includes multiple lenses to improve the specifications of the optical lens 110 and improve the imaging quality. Exemplarily, the rear lens group can include two to eight lenses, such as two, four, five or six.

[0175] like Figure 5 and Figure 6 As shown, the rear lens group includes a third lens group 30 and a fourth lens group 40 arranged in sequence from the object side to the image side, wherein the third lens group 30 includes at least one lens, for example, two, three, four or more lenses, and the fourth lens group 40 includes at least one lens, for example, two, three, four or more lenses. In this embodiment, the third lens group 30 includes a fourth lens 114, a fifth lens 115 and a sixth lens 116, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118 and a ninth lens 119.

[0176] In the embodiment of the present application, the third lens group 30 is a focusing lens group, the fourth lens group 40 is a fixed position lens group, and the third lens group 30 can move forward and backward on the third optical axis OA3, thereby realizing an automatic focusing process.

[0177] The present application changes the distance between the third lens group 30 and the fourth lens group 40, so that the optical lens 110 can achieve both long-distance telephoto shooting with high imaging quality and strong close-up shooting capability, thereby achieving wide object distance imaging from long-distance to close-up. The single-group focusing method can simplify the movement method of the focusing structure of the optical lens, thereby simplifying the focusing process.

[0178] like Figure 5 As shown, when the optical lens 110 focuses on the distant view (infinity), the third lens group 30 moves along the optical axis toward the image side, and the light reflected by the distant view object passes through the optical lens 110 and is imaged on the imaging surface of the image sensor 120, so that the camera module 100 can capture distant view images. Figure 6 As shown, when the optical lens 110 focuses on the near view, the third lens group 30 moves along the optical axis toward the object side, and the light reflected by the near view object passes through the optical lens 110 and is imaged on the imaging surface of the image sensor 120, so that the camera module 100 can capture near view images.

[0179] like Figure 5 As shown, during the focusing process of the optical lens 110 switching from a near view to a distant view, the third lens group 30 moves along the optical axis toward the image side, the fourth lens group 40 does not move, the distance between the third lens group 30 and the fourth lens group 40 decreases, the distance between the third lens group 30 and the image sensor 120 decreases, and the distance between the fourth lens group 40 and the image sensor 120 remains unchanged.

[0180] like Figure 6 As shown, during the focusing process of the optical lens 110 switching from a distant view to a near view, the third lens group 30 moves along the optical axis toward the object side, the fourth lens group 40 does not move, the distance between the third lens group 30 and the fourth lens group 40 increases, the distance between the third lens group 30 and the image sensor 120 increases, and the distance between the fourth lens group 40 and the image sensor 120 remains unchanged.

[0181] It is worth mentioning that no matter the optical lens 110 is in the first imaging mode or the second imaging mode, autofocus can be performed as described above. However, due to the different focal lengths of the first lens group 10 and the second lens group 20, the parameters of the optical lens 110 such as the farthest (long-range) shooting distance, the closest (macro) shooting distance, and the maximum magnification under macro may be different in the first imaging mode and the second imaging mode. The user can switch the optical lens 110 to the corresponding imaging mode according to actual usage requirements.

[0182] This embodiment focuses by moving the third lens group 30 and fixing the fourth lens group 40, so that when focusing on a close-up, the object side of the optical lens 110 is closer to the subject, the degree of light deflection is small, the aberration can be reduced, and the imaging quality can be improved.

[0183] In some examples, the third lens group 30 can be driven to move on the optical axis by a focus motor, for example, the fourth lens 114, the fifth lens 115 and the sixth lens 116 of the third lens group 30 can be driven to move toward the object side or the image side on the third optical axis OA3 by the focus motor, thereby achieving the aforementioned focusing process. The focus motor can be, for example, a voice coil motor, a piezo motor, a shape memory alloy (SMA) motor, or a stepping motor.

[0184] In some examples, multiple lenses of the optical lens 110 can be made of the same material, such as glass, resin, etc. Among them, glass has high refractive index and low expansion characteristics, so that the optical lens 110 has better imaging quality and low temperature drift characteristics. The resin has a low density, which can reduce the weight of the lens group, facilitate movement, and improve the focusing ability of the optical lens 110. In other embodiments, at least one of the multiple lenses of the optical lens 110 is made of a different material from the other lenses, and this application is not limited to this.

[0185] In some examples, the multiple lenses of the optical lens 110 can be formed by processes such as injection molding, molding and / or polishing and grinding.

[0186] In some examples, the optical surface of at least one lens of the optical lens 110 is an aspherical surface, and the optical surface of the aspherical shape has different optical focal lengths from the near axis to the outer field of view area, so that the image has a more balanced image quality. And / or, the optical surface of at least one lens of the optical lens 110 can be a free-form surface to correct aberrations. Among them, the aspherical surface is a surface that is rotationally symmetrical around the optical axis; the free-form surface can have no symmetry axis, or can be symmetrical along a certain direction, or can be symmetrical along two directions.

[0187] In some examples, multiple lenses of the optical lens 110 are assembled through an active alignment (AA) process to ensure assembly accuracy.

[0188] In some examples, a diffraction grating structure may be formed on the optical surface of at least one lens of the optical lens 110. By properly setting the diffraction grating structure, chromatic aberration can be reduced, and the volume of the optical lens 110 can also be reduced.

[0189] In some examples, the optical lens 110 may also include a liquid lens (not shown in the figure) to enhance the focusing effect and achieve ultra-close-up photography. The liquid lens is a structural component that uses liquid as a lens and changes the focal length by changing the curvature of the liquid.

[0190] In some examples, at least one lens of the optical lens 110 can adopt a special-shaped technology to reduce the size of the optical lens 110, so that the optical lens 110 can be better suitable for miniaturized electronic devices 1000, and the scope of application of the optical lens 110 is increased. The incision can be realized by the I-CUT process. In addition, since the height of the lens is reduced by the incision, the lens can be set with a larger light-through aperture, thereby increasing the light throughput of the optical lens 110, so that the imaging quality of the optical lens 110 is better. Among them, the special-shaped technology can also be used on the structural support members of the lens such as the lens barrel and the spacer to reduce the size of the optical lens 110.

[0191] In some examples, the peripheral side surface or supporting surface of at least one lens of the optical lens 110 can be blackened or roughened to eliminate stray light and improve imaging quality. The blackening treatment can be coated or plated with a matte material such as black ink, or a film. The roughening treatment is mainly used to increase the roughness.

[0192] like Figure 5 as well as Figure 6 As shown, the optical lens 110 further includes a second reflector 60 located on the image side of the fourth lens group 40 . The second reflector 60 is used to reflect or deflect the light from the fourth lens group 40 to the image sensor 120 .

[0193] The embodiment of the present application deflects the propagation angle of the light by additionally setting a reflector at the rear end of the optical path, so that the placement direction of the image sensor 120 can be flexibly adjusted to achieve better space utilization. At this time, the light can be deflected 180 degrees in total, and the plane where the image sensor 120 is located can be parallel to the display screen 300 of the electronic device 1000, so that the setting of the image sensor 120 is no longer limited by the thickness of the electronic device 1000, and a larger image sensor can be set, which is conducive to improving the imaging quality.

[0194] Exemplarily, the second reflective element 60 may be a reflector or a prism.

[0195] like Figure 5 as well as Figure 6As shown, the optical lens 110 may further include an aperture stop 121, and the aperture stop 121 may be installed in the front lens group, for example, installed in the first lens group 10 and the second lens group 20. In this case, the aperture adjustment effect of the aperture stop 121 is better, which can improve the imaging quality of the optical lens 110. For example, the aperture stop 121 may be installed at one end of the front lens group close to the object side. In addition, the aperture stop 121 may also be installed in other lenses of the front lens group, the third lens group 30, the fourth lens group 40 or other positions of the optical lens 110, which is not strictly limited in the embodiments of the present application.

[0196] The aperture stop 121 may be a spacer ring structure or a variable fan blade structure; or, the aperture stop 121 may be realized by a surface spraying process, for example, by spraying a light-shielding material on a lens to form the aperture stop 121. The position of the aperture stop 121 may be fixed or variable. For example, the position of the aperture stop 121 is variable, and the aperture stop 121 may be adjusted according to the focusing condition to be located between different lenses.

[0197] The following is combined with specific optical data to present Figure 5 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0198] Please refer to Table 1a, Table 1b and Table 1c. Table 1a is Figure 5 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 1b and Table 1c. The thickness includes the thickness of the lens itself and the distance between the lenses. Figure 5 The aspheric coefficients of each lens of the optical lens 110 in a possible embodiment are shown.

[0199] Table 1a:

[0200]

[0201] Table 1b:

[0202]

[0203]

[0204] Table 1c:

[0205] Face number A20 A22 A24 A26 A28 A30 S1 -1.40E-11 4.18E-13 -8.64E-15 1.17E-16 -1.00E-18 S2 7.33E-13 -1.14E-14 1.03E-16 S3 6.82E-10 -2.41E-11 5.92E-13 -9.67E-15 9.40E-17 S4 -2.67E-11 5.29E-13 -6.04E-15 3.00E-17 S5 1.91E-11 -1.58E-13 S6 2.15E-11 -1.88E-13 S7 1.09E-10 -1.32E-12 S8 3.20E-10 -4.16E-12 S9 -1.02E-11 S10 -1.02E-09 1.68E-11 -3.11E-14 -1.85E-15 S11 4.44E-09 -1.82E-10 4.21E-12 -4.18E-14 S12 3.22E-10 -8.27E-12 9.23E-14 S13 -1.85E-08 1.24E-09 -5.10E-11 1.19E-12 -1.21E-14 S14 -5.20E-08 2.38E-09 -6.06E-11 5.63E-13 3.57E-15 S15 -7.42E-07 6.13E-08 -3.52E-09 1.34E-10 -2.99E-12 2.99E-14 S16 -3.96E-07 2.90E-08 -1.51E-09 5.27E-11 -1.11E-12 1.06E-14 S17 -1.31E-07 8.26E-09 -3.51E-10 9.68E-12 -1.57E-13 1.13E-15 S18 2.35E-08 -9.46E-10 2.69E-11 -5.12E-13 5.84E-15 -3.00E-17

[0206] The aspheric surface of the optical lens 110 in Table 1a can be defined by, but not limited to, the following aspheric surface curve equation:

[0207]

[0208] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, see Table 1b and Table 1c.

[0209] Figure 7 It is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application in a first imaging mode. Figure 8 yes Figure 7 The camera module 100 shown is a schematic diagram of the structure in the second imaging mode. The camera module 100 provided in this embodiment can be regarded as the aforementioned Figure 2 A more specific and lower-level implementation of the camera module 100 shown in FIG. Figure 5 and Figure 6 In the camera module 100 shown in the present embodiment, the light guide module 50 further includes a first reflective element 51 .

[0210] Specifically, Figure 7 and Figure 8 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a movable reflector 52. The first reflector 51 is located between the second lens group 20 and the movable reflector 52. The first reflector 51 can be a fixed position reflector, which is used to reflect the second light to the movable reflector 52. The movable reflector 52 can move (for example, rotate) between the first position and the second position. When the movable reflector 52 is located Figure 7 When the movable reflector 52 is in the first position shown, the movable reflector 52 reflects the first light from the first lens group 10 to the third lens group 30, and the optical lens 110 enters the first imaging mode. Figure 8 In the second position shown, the movable reflector 52 reflects the second light from the second lens group 20 to the third lens group 30, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to deflect between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0211] When the movable reflecting member 52 is rotated to Figure 7In the first position shown, the optical lens 110 works in the first imaging mode, and the first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The second light from the second lens group 20 cannot enter the third lens group 30. For example, the second light is reflected by the movable reflector 52 to an area outside the third lens group 30, or the movable reflector 52 does not reflect the second light. At this time, the second light can be directed to other areas inside the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the first optical axis OA1 and the third optical axis OA3, while the second optical axis OA2 and the third optical axis OA3 are disconnected from each other.

[0212] When the movable reflecting member 52 is moved to Figure 8 In the second position shown, the optical lens 110 works in the second imaging mode, and the second light from the second lens group 20 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The first light from the first lens group 10 cannot enter the third lens group 30. For example, the first light is reflected by the movable reflector 52 to an area outside the third lens group 30, or the movable reflector 52 does not reflect the first light. At this time, the first light can be directed to other areas inside the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the second optical axis OA2 and the third optical axis OA3, and the first optical axis OA1 and the third optical axis OA3 are disconnected from each other.

[0213] In some examples, such as Figure 7 As shown, when the movable reflector 52 is located at the first position, the reflection plane of the movable reflector 52 is parallel to the second optical axis OA2, and the reflection plane of the movable reflector 52 forms an angle of 45° with the first optical axis OA1. At this time, the movable reflector 52 reflects the first light to the third lens group 30, but does not reflect the second light. When the movable reflector 52 is located at the second position, the reflection plane of the movable reflector 52 is parallel to the first optical axis OA1, and the reflection plane of the movable reflector 52 forms an angle of 45° with the second optical axis OA2. At this time, the movable reflector 52 reflects the second light to the third lens group 30, but does not reflect the first light.

[0214] In some examples, the movable reflector 52 may be driven to rotate between the first position and the second position by any power component such as a voice coil motor, a piezoelectric motor, a shape memory alloy motor, or a stepping motor.

[0215] Exemplarily, the first reflector 51 may be a reflector or a prism.

[0216] Compared with the aforementioned Figure 5 and Figure 6 In the camera module 100 shown, the light guide module 50 in this embodiment reflects the second light to the movable reflector 52 by setting a first reflector 51, which can reduce the moving range of the movable reflector 52, so that the movable reflector 52 only needs to deflect the reflection angle to achieve the switching between the first light and the second light without moving over a large range, thereby simplifying the driving design and helping to reduce the volume of the lens or module.

[0217] In some examples, the first reflector 51 may also be configured as a movable reflector that can be moved under the drive of a power component. Figure 7 In the first position shown, the first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30. At this time, the first reflector 51 can be driven to move to reflect the second light from the second lens group 20 to the area outside the movable reflector 52. At this time, the second light will not reach the movable reflector 52, that is, the movable reflector 52 will not reflect the second light, and the second light will not enter the third lens group 30. Under the reflection of the first reflector 51, the second light can be directed to other areas inside the electronic device 1000 and be absorbed or consumed. Through the above settings, the movable reflector 52 does not need to consider the avoidance design of the second light while reflecting the first light, which can increase the freedom of the optical path design and reduce the difficulty of the optical path design. In addition, the second light will not be introduced when imaging through the first light, which can effectively avoid the interference of the second light on the imaging, has a better anti-interference effect, and is conducive to improving the quality of imaging. Exemplarily, at this time, the second light can be reflected by the first reflector 51 to other rear lens groups, or directly reflected to other image sensors, that is, at this time, the electronic device 1000 can simultaneously perform imaging through the first light and the second light.

[0218] Fig. 9 It is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application in a first imaging mode. Fig.10 yes Fig. 9 The camera module 100 is shown in the second imaging mode. Fig. 9 and Fig.10 As shown, in this embodiment, the light guide module 50 also includes a first reflector 51 and a movable reflector 52, but the functions of the first reflector 51 and the movable reflector 52 are the same as those described above. Figure 7 and Figure 8 The functions of corresponding components in the camera module 100 shown are different.

[0219] Specifically, Fig. 9 and Fig.10As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a movable reflector 52. The first reflector 51 is located between the second lens group 20 and the movable reflector 52. The first reflector 51 can be a fixed position reflector, used to reflect the second light to the third lens group 30. The movable reflector 52 can move between the first position and the second position (for example, rotate with the left end as the axis). When the movable reflector 52 is rotated to Fig. 9 In the first position shown, the movable reflector 52 reflects the first light from the first lens group 10 to the third lens group 30 and blocks the second light, so that the second light cannot reach the third lens group. At this time, the optical lens 110 enters the first imaging mode. When the movable reflector 52 is rotated to Fig.10 In the second position shown, the movable reflector 52 avoids the second light, and the second light reaches the third lens group 30 smoothly under the reflection of the first reflector 51, while the first light is reflected by the movable reflector 52 to the area outside the third lens group 30, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to rotate between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0220] When the movable reflecting member 52 is rotated to Fig. 9 In the first position shown, the optical lens 110 works in the first imaging mode, and the first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The second light from the second lens group 20 is blocked by the movable reflector 52 and cannot enter the third lens group 30. For example, an opaque coating can be provided on the back of the movable reflector 52 to absorb the second light, or the second light can be reflected to an area outside the third lens group 30. At this time, the second light can be directed to other areas inside the electronic device 1000 and absorbed or consumed.

[0221] When the movable reflecting member 52 is moved to Fig.10 In the second position shown, the optical lens 110 works in the second imaging mode, the movable reflector 52 avoids the second light, for example, the reflective surface of the movable reflector 52 is parallel to the third optical axis OA3, and the second light is reflected by the first reflector 51 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The first light from the first lens group 10 is blocked by the movable reflector 52, for example, the first light is reflected to the area outside the third lens group 30, or the movable reflector 52 does not reflect the first light, and the first light can be emitted to other areas inside the electronic device 1000 and absorbed or consumed.

[0222] In some examples, such as Fig. 9 and Fig.10 As shown, the left end of the movable reflector 52 can be set as a rotation axis, and the movable reflector 52 rotates around the left end, for example, Fig. 9 The movable reflector 52 in the first position is rotated 45° counterclockwise about the left end as the axis to reach Fig.10 When the movable reflector 52 is in the second position, the movable reflector 52 is adjacent to the first lens group 10, and the reflection surface is parallel to the lens plane of the first lens group 10. Further, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise around the left side as an axis.

[0223] Fig.11 yes Fig. 9 FIG. 1 is a schematic diagram of another example of a camera module 100 in a second imaging mode. Fig. 9 and Fig.11 As shown, the right end of the movable reflector 52 can also be set as a rotation axis, and the movable reflector 52 rotates around the right end, for example, Fig. 9 The movable reflector 52 in the first position is rotated 45° counterclockwise about the right end as the axis to reach Fig.11 When the movable reflector 52 is in the second position, the movable reflector 52 is away from the first lens group 10, and the reflection surface is parallel to the lens plane of the first lens group 10. Further, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise with the right end as the axis.

[0224] Fig.12 It is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application in a first imaging mode. Fig.13 yes Fig.12 The camera module 100 is shown in the second imaging mode. Fig.12 and Fig.13 As shown, in this embodiment, the light guide module 50 includes a first reflective element 51 and a controllable transflective mirror 53 .

[0225] Specifically, Fig.12 and Fig.13 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable transflective mirror 53. The first reflector 51 is located between the second lens group 20 and the controllable transflective mirror 53, and the first reflector 51 can be a fixed position reflector, which is used to reflect the second light to the third lens group 30. The controllable transflective mirror 53 has a transmission mode and a reflection mode, and can switch between these two modes.

[0226] When the controllable reflective mirror 53 is controlled to enter Fig.12 In the reflection mode shown in FIG. 1 , the controllable transflective mirror 53 reflects the first light from the first lens group 10 to the third lens group 30, and reflects the second light from the second lens group 20 to an area outside the third lens group 30, that is, the second light cannot reach the third lens group 30. At this time, the optical lens 110 enters the first imaging mode. When the controllable transflective mirror 53 is controlled to enter the reflection mode shown in FIG. Fig.13 In the transmission mode shown, the second light is incident on the third lens group 30 through the controllable transflective mirror 53, and the first light is incident on the area outside the third lens group 30 through the controllable transflective mirror 53, that is, the first light cannot reach the third lens group 30, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the controllable transflective mirror 53 to switch between the reflection mode and the transmission mode, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0227] When the controllable reflective mirror 53 is controlled to enter Fig.12 In the reflection mode shown, the optical lens 110 works in the first imaging mode, and the first light from the first lens group 10 is reflected by the controllable reflective mirror 53 to the third lens group 30, and then sequentially passes through the fourth lens group 40 and the second reflector 60 to enter the image sensor 120. The second light from the second lens group 20 is blocked by the controllable reflective mirror 53 (reflected to other directions) and cannot enter the third lens group 30. For example, the second light is reflected to other areas inside the electronic device 1000 and is absorbed or consumed.

[0228] When the controllable reflective mirror 53 is controlled to enter Fig.13 In the transmission mode shown, the optical lens 110 works in the second imaging mode, and the second light is incident on the third lens group 30 through the controllable transflective mirror 53, and then sequentially passes through the fourth lens group 40 and the second reflector 60 to be incident on the image sensor 120. The first light is incident on the area outside the third lens group 30 through the controllable transflective mirror 53, for example, the first light is incident on other areas inside the electronic device 1000, and is absorbed or consumed.

[0229] In some examples, the controllable transflective mirror 53 can be switched between the reflection mode and the transmission mode by changing the current or voltage applied to the controllable transflective mirror 53. Alternatively, the mode of the controllable transflective mirror 53 can be controlled by turning the power on and off. For example, when there is no electrical signal, the controllable transflective mirror 53 is in the reflection mode, that is, when there is no power, the controllable transflective mirror 53 is in the reflection mode. When there is an electrical signal input, the controllable transflective mirror 53 is in the transmission state, that is, when the power is on, the controllable transflective mirror 53 is in the transmission mode. The electrical signal here can be a current signal or a voltage signal.

[0230] For example, the controllable transflective mirror 53 may include an electrically controllable liquid crystal material layer.

[0231] In the embodiment of the present application, the second reflector 60 includes a prism 61, or in other words, the second reflector 60 is a prism 61. Fig.14 61 is a schematic diagram of the structure of the prism 61 provided in the embodiment of the present application. Figure 12-14 As shown, the camera module 100 provided in the embodiment of the present application includes a rear lens group (ie, a third lens group 30 and a fourth lens group 40 ), a prism 61 and an image sensor 120 .

[0232] The rear lens group has a third optical axis OA3, and the multiple lenses of the rear lens group are arranged in sequence along the third optical axis OA3. The prism 61 has an incident surface 613, a first reflection surface 611, and a second reflection surface 612. The prism 61 is configured such that: the light from the rear lens group (for example, the fourth lens group 40) is incident on the inside of the prism 61 through the incident surface 613, and then is reflected by the first reflection surface 611 and the second reflection surface 612 in sequence and then emitted from the first reflection surface 611 to the image sensor 120. The photosensitive surface 122 of the image sensor 120 faces the first reflection surface 611, and the photosensitive surface 122 is tilted relative to the third optical axis OA3. The image sensor 120 is also used for jitter compensation to achieve optical image stabilization.

[0233] According to the camera module 100 provided in the embodiment of the present application, after the light from the rear lens group enters the prism 61, it can be reflected twice by the first reflection surface 611 and the second reflection surface 612, and then emitted from the first reflection surface 611 to the image sensor 120. The photosensitive surface 122 of the image sensor 120 faces the first reflection surface 611, and the photosensitive surface 122 is tilted relative to the third optical axis OA3. The image sensor 120 is usually a sheet-like structure, and the photosensitive surface 122 is tilted relative to the third optical axis OA3, that is, the image sensor 120 is tilted relative to the third optical axis OA3. The image sensor 120 in the embodiment of the present application is also used for jitter compensation to achieve optical image stabilization. Since the image sensor 120 is tilted, the anti-shake motor (not shown in the figure) that drives the image sensor 120 to perform jitter compensation can also be tilted. This can save space in the thickness direction perpendicular to the third optical axis OA3 of the module, and will not occupy additional or excessive thickness space due to the setting of the anti-shake motor. That is, the size of the camera module 100 in the thickness direction can be reduced, which is beneficial to reducing the volume of the camera module 100, thereby facilitating the lightweight design of the electronic device 1000.

[0234] In the embodiment of the present application, the first reflection surface 611 can not only reflect light, but also allow light to be transmitted from the first reflection surface 611 to the image sensor 120. Specifically, after the light enters the interior of the prism 61 through the incident surface 613, it firstly enters the first reflection surface 611 at an angle greater than the critical angle, undergoes total internal reflection (TIR) ​​on the first reflection surface 611, and reflects the light to the second reflection surface 612, and then the light continues to reflect on the second reflection surface 612 and is deflected again to the first reflection surface 611. Under the deflection effect of the second reflection surface 612, the incident angle of the light from the second reflection surface 612 is smaller than the critical angle, so the light can be transmitted from the first reflection surface to the image sensor 120 instead of undergoing total internal reflection again.

[0235] In the embodiment of the present application, the photosensitive surface 122 is tilted relative to the third optical axis OA3, which means that the photosensitive surface 122 is neither parallel nor perpendicular to the third optical axis OA3. In some examples, the angle between the photosensitive surface 122 and the third optical axis OA3 is θ, 15°≤θ<45°. For example, the value of θ can be 20°, 25°, 27.5°, 30°, 35° or 40°, etc.

[0236] Through the above arrangement, on the one hand, the image sensor 120 can be arranged as tilted as possible to save thickness and space as much as possible. On the other hand, the angle requirements of optical design can be taken into account, for example, it is convenient for the light to be totally internally reflected on the first reflection surface, and it is convenient for the light to be emitted from the first reflection surface 611 at a vertical angle and enter the photosensitive surface 122 at a vertical angle, that is, the above angle selection can also reduce the difficulty of optical design and is conducive to improving imaging quality.

[0237] In some examples, the incident surface 613, the first reflective surface 611, the second reflective surface 612, and the light-sensitive surface 122 are all planes. The first reflective surface 611 and the light-sensitive surface 122 may be arranged in parallel.

[0238] In some examples, the angle β between the first reflective surface 611 and the second reflective surface 612 may be an acute angle, for example, β is less than 45°, or less than 35°, so that the second reflective surface 612 can reflect the light back to the first reflective surface 611 again.

[0239] In some examples, a reflective film layer may be coated on the second reflective surface 612 , and the reflective film layer may be, for example, a metal reflective film layer such as nickel, aluminum, silver, or gold, so as to ensure the reflection effect and prevent light from being transmitted from the second reflective surface 612 to the outside of the prism 61 .

[0240] In some examples, the second reflective surface 612 is parallel to the third optical axis OA3, the angle between the first reflective surface 611 and the incident surface 613 is α, and the angle between the first reflective surface 611 and the second reflective surface 612 is β, where 0°≤|α-2β|≤10°, for example 0°≤|α-2β|≤5°.

[0241] Because the second reflection surface 612 and the third optical axis OA3 are parallel to each other, the values ​​of α and 2β should be as close as possible. The smaller the absolute values ​​of the two, the more the light can be emitted from the first reflection surface 611 at a nearly vertical angle. For example, when α=2β, the light can be emitted to the image sensor 120 at a 90-degree angle perpendicular to the first reflection surface 611. Through the above settings, it can be ensured that the light is emitted from the first reflection surface 611 at a vertical or nearly vertical angle, and at this time, it is only necessary to make the photosensitive surface 122 parallel to the first reflection surface 611 to ensure that the emitted light is incident on the photosensitive surface 122 at a vertical or nearly vertical angle, which is conducive to reducing the difficulty of optical design.

[0242] In some examples, α=2β, and the angle between the second reflective surface 612 and the incident surface 613 is γ, which can be an acute angle, a right angle, or an obtuse angle. For example, γ can be a 90° right angle, in which case α is 60° and β is 30°. Alternatively, γ can be an obtuse angle of 97.5°, in which case α is 55° and β is 27.5°.

[0243] The structures or settings of the prism 61 and image sensor 120 provided in the embodiment of the present application can also be used in conventional periscope camera modules. Fig.15 1 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. Fig.15 As shown, the camera module 100 can be a conventional periscope camera module. The camera module 100 also includes a third reflector 63 located on the object side of the rear lens group, which is used to reflect light to the rear lens group and then enter the tilted image sensor 120 through the prism 61.

[0244] In some examples, the third reflector 63 may be a reflector or a prism. The third reflector 63 may also be configured to perform shake compensation to achieve optical image stabilization of the lens.

[0245] In some examples, a front lens group may also be provided on the object side of the third reflector 63, for example Fig.15 In the first lens group 10, the light first passes through the convergence of the first lens group 10 and then enters the third reflector 63.

[0246] In some examples, such as Fig.15As shown, in order to reduce the volume of the prism, without affecting the optical imaging, the vertex angle between the incident surface 613 and the first reflecting surface 611, and the vertex angle between the first reflecting surface 611 and the second reflecting surface 612 can be cut off. At this time, the angle between the incident surface 613 and the first reflecting surface 611, and the angle between the first reflecting surface 611 and the second reflecting surface 612 is the angle between the extension lines of the two surfaces.

[0247] In some examples, such as Fig.12 and Fig.13 As shown, the rear lens group includes a third lens group 30 and a fourth lens group 40 sequentially arranged along the third optical axis OA3, and at least one of the third lens group 30 and the fourth lens group 40 is a focus lens group movable along the third optical axis OA3. For example, the third lens group 30 is a focus lens group, and the fourth lens group 40 is a fixed lens group.

[0248] In some examples, the rear lens group may also include three, four, five or more lens groups arranged in sequence along the third optical axis OA3, at least one of which is a focus lens group, and the rest are fixed lens groups. For example, the rear lens group may also include a sixth lens group (not shown in the figure), a third lens group 30 and a fourth lens group 40 arranged in sequence along the third optical axis OA3, wherein the sixth lens group and the fourth lens group 40 are fixed lens groups, and the third lens group 30 located in the middle is a movable focus lens group.

[0249] Fig.16 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.16 Part (a) is a schematic diagram of the structure of the camera module 100 in the second imaging mode. Fig.16 Part (b) of FIG. 1 is a schematic diagram of the structure of the camera module 100 in the first imaging mode. The camera module 100 provided in the embodiment of the present application can be regarded as the aforementioned Figure 2 ,as well as Figure 5 and Figure 6 A more specific and lower-level implementation of the camera module 100 shown in FIG. 1 is shown in FIG. 1 . For ease of understanding, the rear lens group, the second reflector 60, and the image sensor 120 on the image side of the movable reflector 52 (light guide module 50) in the aforementioned embodiment are shown in FIG. Fig.16 It is not shown in the figure below. Fig.16 The structural details of the optical lens 110 are further introduced.

[0250] like Fig.16As shown, in the embodiment of the present application, the light guide module 50 includes a movable reflector 52, or in other words, the movable reflector 52 is the aforementioned light guide module 50, and the movable reflector 52 can be a prism (e.g., a right-angle prism). The movable reflector 52 can switch positions under the drive of the driving member 90, and the driving member 90 can be any power component such as a voice coil motor, a piezoelectric motor, a motor, or a cylinder.

[0251] The movable reflector 52 is located between the front lens group and the rear lens group (not shown in the figure), and can move (for example, translate) between a first position and a second position. Fig.16 In the first position shown in part (b), the movable reflector 52 reflects the first light from the first lens group 10 to the rear lens group, and the optical lens 110 enters the first imaging mode. Fig.16 In the second position shown in part (a), the movable reflector 52 reflects the second light from the second lens group 20 to the rear lens group, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to switch between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0252] In some examples, the driving member 90 can drive the movable reflector 52 to slide between the first position and the second position. For example, the movable reflector 52 is slidably disposed on a slide bar or a slide groove connecting the first position and the second position through a mounting member such as a mounting seat 91, and can slide on the slide bar or the slide groove under the drive of the driving member 90, thereby ensuring that the movable reflector 52 can achieve position switching quickly (for example, within 30 milliseconds) and stably. Exemplarily, a U-shaped or V-shaped slide groove is disposed at the bottom of the mounting seat 91, and the slide groove is sleeved on the slide rod. The movable reflector 52 is fixedly disposed on the mounting seat 91. The movable reflector 52 can achieve long-stroke, fast and stable position switching between the first position and the second position through the slide groove and the slide rod that slide together.

[0253] In the embodiment of the present application, the optical lens 110 further includes a light shielding member, which is any component capable of shielding light, and the light shielding member can be configured into any shape. For example, the light shielding member can be Fig.16The shading plate 80 may be a shading curtain or the like. The shading member is configured such that: when the movable reflector 52 is moved to the second position, the movable reflector 52 reflects the second light, and the shading member blocks the first light to prevent the first light from entering the movable reflector 52; and / or, when the movable reflector 52 is moved to the first position, the movable reflector 52 reflects the first light, and the shading member blocks the second light to prevent the second light from entering the movable reflector 52.

[0254] Through the above settings, the optical lens 110 will not introduce the second light when imaging through the first light (i.e., working in the first imaging mode), and can effectively avoid the interference of the second light on the imaging. The optical lens 110 will not introduce the first light when imaging through the second light (i.e., working in the second imaging mode), and can effectively avoid the interference of the first light on the imaging. In this way, interference between different light rays can be avoided, and the problem of light rays from different front lens groups entering the image sensor 120 at the same time to form ghost images on the image sensor 120 can be avoided, that is, the introduction of stray light can be avoided, which is conducive to improving the quality of imaging.

[0255] In some examples, the shading member may only block the first light, that is, when the movable reflector 52 is moved to the second position, the movable reflector 52 reflects the second light, and the shading member blocks the first light to prevent the first light from entering the movable reflector 52. When the movable reflector 52 is moved to the first position to reflect the first light, the shading member will not or does not need to block the second light. Fig.19 The illustrated embodiment will further illustrate this situation.

[0256] In some examples, the light shielding member may only shield the second light, that is, when the movable reflector 52 is moved to the first position, the movable reflector 52 reflects the first light, and the light shielding member shields the second light to prevent the second light from entering the movable reflector 52. When the movable reflector 52 is moved to the second position to reflect the second light, the light shielding member will not or does not need to shield the first light.

[0257] In some examples, the shading member can block both the first light and the second light. That is, when the movable reflector 52 is moved to the second position, the movable reflector 52 reflects the second light, and the shading member blocks the first light to prevent the first light from entering the movable reflector 52. Also, when the movable reflector 52 is moved to the first position, the movable reflector 52 reflects the first light, and the shading member blocks the second light to prevent the second light from entering the movable reflector 52.

[0258] like Fig.16As shown, in the embodiment of the present application, the shading member includes a shading plate 80 with a variable position, and the shading plate 80 can be switched between a third position and a fourth position, such as being translated, to thereby block the first light or the second light.

[0259] like Fig.16 As shown in part (a), when the movable reflector 52 is moved to the second position, the optical lens 110 works in the second imaging mode, and the movable reflector 52 reflects the second light from the second lens group 20. At this time, the light shielding plate 80 is moved to the third position to shield the first light, ensuring that the first light cannot enter the movable reflector 52. In this way, stray light can be prevented from entering the image sensor 120, and the imaging quality of the optical lens 110 can be improved.

[0260] like Fig.16 As shown in part (b), when the movable reflector 52 is moved to the first position, the optical lens 110 works in the first imaging mode, and the movable reflector 52 reflects the first light from the first lens group 10. At this time, the light shielding plate 80 is moved to the fourth position to shield the second light, ensuring that the second light cannot enter the movable reflector 52. In this way, stray light can be prevented from entering the image sensor 120, and the imaging quality of the optical lens 110 can be improved.

[0261] The embodiment of the present application achieves shielding of the first light or the second light by setting a variable position shading plate 80, which can achieve precise control of the light path and ensure a good shielding effect. In addition, the implementation method is simple and easy to implement, which is conducive to saving lens space and implementation costs, and has high operating stability, which is conducive to improving the reliability of the optical lens 110.

[0262] like Fig.16 As shown, the third position is located on the image side of the first lens group 10. When the light shielding plate 80 is located at the third position, the plate surface of the light shielding plate 80 faces the first lens group 10 to achieve a better light shielding effect. The fourth position is located on the image side of the second lens group 20. When the light shielding plate 80 is located at the fourth position, the plate surface of the light shielding plate 80 faces the second lens group 20 to achieve a better light shielding effect. In other examples, the third position may also be located on the object side of the first lens group 10, and the fourth position may be located on the object side of the second lens group 20.

[0263] In some examples, the material of the shading plate 80 can be various matte materials or frosted plastic or matte metal, and the shape of the shading plate 80 can be circular, oval or rectangular, etc., which is not limited in the present application.

[0264] In some examples, the shading plate 80 and the movable reflector 52 may also be driven by two different driving members respectively.

[0265] In some examples, the shading plate 80 and the movable reflector 52 may be synchronously driven by the same driving member, for example, both are driven by the driving member 90 .

[0266] Through the above settings, the same driving component can be reused to realize the position switching of the shading plate 80 and the movable reflector 52, that is, there is no need to set up an additional driving component to drive the shading plate 80, which is beneficial to saving lens space and implementation costs, and synchronous driving is achieved through the same driving component, which is beneficial to quickly respond to the user's switching operations, shorten the time required for switching, and avoid affecting the user's experience due to inconsistent position switching.

[0267] In some examples, the driving member 90 is simultaneously connected to the shading plate 80 and the movable reflector 52, and the driving member 90 can achieve synchronous driving of the shading plate 80 and the movable reflector 52 through mechanisms such as belts, rope pulleys, rollers, connecting rods, and gear rack mechanisms.

[0268] Fig.17 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.17 Part (a) is a schematic diagram of the structure of the camera module 100 in the second imaging mode. Fig.17 Part (b) is a structural diagram of the camera module 100 in the first imaging mode. Fig.18 It is a schematic structural diagram of a sunshade 80 provided in an embodiment of the present application.

[0269] like Fig.17 and Fig.18 As shown, relative to the aforementioned Fig.16 In the embodiment shown, in this embodiment, the shading plate 80 is fixedly connected to the movable reflector 52, that is, the positions of the shading plate 80 and the movable reflector 52 are relatively fixed. For example, the shading plate 80 is fixedly arranged on the mounting seat 91, and the shading plate 80 is fixedly connected to the movable reflector 52 through the mounting seat 91. At this time, the driving member 90 can drive the shading plate 80 and the movable reflector 52 to move synchronously through the mounting seat 91. The shading plate 80 has a light leakage area 81, and the light leakage area 81 corresponds to the position of the movable reflector 52. The light leakage area 81 can allow light to pass through and enter the movable reflector 52. The light leakage area 81 can be a through hole, and can also be a notch structure located at the edge of the shading plate 80.

[0270] like Fig.17As shown in part (a), when the movable reflector 52 is moved to the second position, the shading plate 80 is synchronously moved to the third position. At this time, the light leakage area 81 on the shading plate 80 is opposite to the second lens group 20. The second light is incident on the movable reflector 52 through the light leakage area 81. The movable reflector 52 reflects the second light, and the non-light leakage area of ​​the shading plate 80 (i.e., the area to the right of the light leakage area 81) blocks the first light.

[0271] like Fig.17 As shown in part (b), when the movable reflector 52 is moved to the first position, the shading plate 80 is synchronously moved to the fourth position. At this time, the light leakage area 81 on the shading plate 80 is opposite to the first lens group 10. The first light is incident on the movable reflector 52 through the light leakage area 81, and the movable reflector 52 reflects the first light, while other non-light leakage areas of the shading plate 80 (i.e., the area to the left of the light leakage area 81) block the second light.

[0272] The embodiment of the present application is to fix the shading plate 80 with the movable reflector 52, which is conducive to synchronously driving the above two components through the same driving member (such as the driving member 90), which can save lens space and implementation costs, and is conducive to quickly responding to the user's switching operation and shortening the time required for switching. By setting a light leakage area 81 on the shading plate 80 that is opposite to the position of the movable reflector 52, the light path can be switched by changing the position of the light leakage area 81. And due to the existence of the light leakage area 81, the shading plate 80 can be set between the front lens group and the movable reflector 52, and the shading plate 80 can cross from one side of the movable reflector 52 to the other side, which is convenient for the shading plate 80 to be fixedly connected with the movable reflector 52, and the connection structure between the two is simplified. For example, at this time, the shading plate 80 can be fixedly set on the mounting seat 91 of the movable reflector 52, thereby realizing the fixed connection between the two.

[0273] In some examples, the light leakage area 81 may be a through-hole structure, or a notch structure disposed at the edge of the light shielding plate 80. Fig.18 As shown, the shading plate 80 is a rectangular structure, and the light leakage area 81 is a through-hole structure located in the middle of the shading plate 80. The shape of the light leakage area 81 can be rectangular, circular, elliptical or any other shape. In the embodiment of the present application, the movable reflector 52 is a prism, and the shading plate 80 is fixedly superimposed (attached) on the light incident surface of the movable reflector 52 (i.e., the prism), and the light leakage area 81 is opposite to the light incident surface. The shape of the light leakage area 81 can be the same as the shape of the light incident surface, for example, the shape of the light leakage area 81 and the light incident surface are both rectangular.

[0274] Fig.19 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.19Part (a) is a schematic diagram of the structure of the camera module 100 in the second imaging mode. Fig.19 Part (b) is a structural diagram of the camera module 100 in the first imaging mode. Fig. 20 FIG. 8 is a schematic diagram of the structure of another shading plate 80 provided in an embodiment of the present application. Fig.19 and Fig. 20 As shown, relative to the aforementioned Fig.17 and Fig.18 In the embodiment shown, in this embodiment, the light leakage area 81 is arranged adjacent to one side edge of the light shielding plate 80, and the light shielding plate 80 is only used to shield the first light but cannot shield the second light.

[0275] like Fig.19 As shown in part (a), when the movable reflector 52 is moved to the second position, the shading plate 80 is synchronously moved to the third position. At this time, the light leakage area 81 on the shading plate 80 is opposite to the second lens group 20. The second light is incident on the movable reflector 52 through the light leakage area 81. The movable reflector 52 reflects the second light, and the non-light leakage area of ​​the shading plate 80 (i.e., the area to the right of the light leakage area 81) blocks the first light.

[0276] like Fig.19 As shown in part (b), when the movable reflector 52 is moved to the first position, the shading plate 80 is synchronously moved to the fourth position. At this time, the light leakage area 81 on the shading plate 80 is opposite to the first lens group 10. The first light is incident on the movable reflector 52 through the light leakage area 81, and the movable reflector 52 reflects the first light. However, since the shading plate 80 and the second lens group 20 are staggered with each other at this time, the second light cannot be blocked.

[0277] Considering the complex internal structure of the lens, not all front lens groups may have light blocking requirements. Fig.19 In the first imaging mode shown in part (b), since the light incident from the second lens group 20 is located at the back of the movable reflector 52 and is not easy to reach the reflective surface, and the presence of the mounting seat 91 can also play a certain light blocking role, there is no need to perform additional shielding design for the second light. Fig.19 In the second imaging mode shown in part (a), the reflective surface of the movable reflector 52 faces the first lens group 10. The first light incident from the first lens group 10 may be incident on the reflective surface of the movable reflector 52 due to diffuse reflection, so it is necessary to design a shielding for the first light. Therefore, in this embodiment, the light shielding plate 80 is only used to shield the first light, and there is no need to shield the second light, thereby shortening the overall length of the light shielding plate 80, which is conducive to miniaturization of the camera module 100.

[0278] Fig.21 is a structural diagram of another camera module 100 provided in an embodiment of the present application. Fig.21 Part (a) is a schematic diagram of the structure of the camera module 100 in the second imaging mode. Fig.21 Part (b) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. In the embodiment of the present application, different areas of the light shielding plate 80 have a light transmission mode and a light shielding mode, and can switch between the two modes.

[0279] like Fig.21 As shown in part (a) of the figure, when the movable reflector 52 is moved to the second position, the shading plate 80 is switched to the light transmission mode corresponding to the second area of ​​the second lens group 20, and the second light is emitted to the movable reflector 52 through the second area, and the shading plate 80 is switched to the light shielding mode corresponding to the first area of ​​the first lens group 10 to shield the first light. In this way, the first light can be prevented from entering the image sensor 120 as stray light, and the imaging quality of the optical lens 110 can be improved.

[0280] like Fig.21 As shown in part (b) of the figure, when the movable reflector 52 is moved to the first position, the light shielding plate 80 is switched to the light transmission mode corresponding to the first area of ​​the first lens group 10, and the first light is emitted to the movable reflector 52 through the first area, and the light shielding plate 80 is switched to the light shielding mode corresponding to the second area of ​​the second lens group 20 to shield the second light. In this way, the second light can be prevented from entering the image sensor 120 as stray light, and the imaging quality of the optical lens 110 can be improved.

[0281] Through the above arrangement, the embodiment of the present application can achieve the shading effect in different areas by changing the light transmittance properties of different areas. At this time, the shading plate 80 is stationary and does not need to be moved, so there is no need for drive design, which is conducive to simplifying the internal structure of the module.

[0282] In some examples, the area can be switched between the light-transmitting mode and the light-shielding mode by changing the current or voltage applied to different areas of the light-shielding plate 80, or the modes of different areas can be controlled by turning the power on and off. In some cases, the first area and the second area of ​​the light-shielding plate 80 can be regarded as two independent light-shielding units that can be controlled separately. For example, for the first area, when there is no electrical signal, the first area is in the light-shielding mode, that is, when there is no power, the first area is in the light-shielding mode. When there is an electrical signal input, the first area is in the light-transmitting state, that is, when the power is on, the first area is in the light-transmitting mode. The electrical signal here can be a current signal or a voltage signal.

[0283] Exemplarily, the first region and the second region of the light shielding plate 80 include electrically controlled liquid crystal material layers that can be independently controlled.

[0284] Exemplarily, the shading mode here may be the aforementioned reflection mode, that is, the light shielding effect is achieved by reflecting the light to other areas.

[0285] Fig. 22 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig. 22 Part (a) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Fig. 22 Part (b) is a schematic diagram of the structure when the camera module 100 is in the second imaging mode and focuses on infinity. Fig. 22 Part (c) is a schematic diagram of the structure of the camera module 100 when it is in the second imaging mode and focuses on the macro distance. Fig. 22 The structural details of the optical lens 110 are further introduced.

[0286] like Fig. 22 As shown, in the embodiment of the present application, the light guide module 50 includes a movable reflector 52, or in other words, the movable reflector 52 is the aforementioned light guide module 50, and the movable reflector 52 can be a prism (e.g., a right-angle prism). The movable reflector 52 can switch positions under the drive of a driving member, and the driving member can be, for example, any power component such as a voice coil motor, a piezoelectric motor, a motor, or a cylinder.

[0287] The movable reflector 52 is located between the front lens group and the rear lens group, and can move (for example, translate) between a first position and a second position. Fig. 22 In the first position shown in part (a), the movable reflector 52 reflects the first light from the first lens group 10 to the rear lens group. At this time, the optical lens 110 (ie, the camera module 100) enters the first imaging mode.

[0288] When the movable reflector 52 is located Fig. 22 Part (b) or Fig. 22 When the movable reflector 52 is in the second position shown in part (c) of FIG. 1 , the movable reflector 52 reflects the second light from the second lens group 20 to the rear lens group, and the optical lens 110 (i.e., the camera module 100) enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to switch between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function can be realized.

[0289] In some examples, the focal length of the first lens group 10 is f1, the focal length of the second lens group 20 is f2, and f1 / f2>1. That is, the ratio of f1 to f2 is greater than 1, for example, the ratio of f1 to f2 may be 1.5, 1.8, 2.0 or 3.0.

[0290] As Fig. 22 shown, in the embodiment of the present application, the first lens group 10 includes a first lens 111, and the second lens group 20 includes a second lens 112. The rear lens group includes a third lens group 30 and a fourth lens group 40 arranged in sequence along the third optical axis OA3. The third lens group 30 is a focusing lens group that can move back and forth along the third optical axis OA3. Among them, the third lens group 30 includes a fourth lens 114, a fifth lens 115, and a sixth lens 116 arranged in sequence along the third optical axis OA3, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118, and a ninth lens 119 arranged in sequence along the third optical axis OA3.

[0291] In the embodiment of the present application, by translating the movable reflector 52 along the direction of the third optical axis OA3, the switching between the first imaging mode (first focal length) and the second imaging mode (second focal length) can be realized. In the two imaging modes, the focusing function can be realized by moving the third lens group 30, and the macro shooting function can be realized in the second imaging mode.

[0292] As Fig. 22 shown in parts (b) and (c) of Fig. 22 , when the optical lens 110 is in the second imaging mode, the optical lens 110 switches from focusing at infinity shown in part (b) of Fig. 22 to focusing on macro shown in part (c) of Fig. 22 , the third lens group 30 moves towards the object side, and the required moving distance is Lm. As shown in parts (b) of Fig. 22 and (a) of

[0293] When the optical lens 110 switches from the second imaging mode to the first imaging mode, in order to achieve re-focusing, for example, re-focusing at infinity, the third lens group 30 moves towards the image side, and the required moving distance is L1. The focal length of the third lens group 30 is f3, where Lm, L1, and f3 satisfy: 2 < f3 / (Lm + L1) < 15. For example, 3 ≤ f3 / (Lm + L1) ≤ 12, or 2.5 ≤ f3 / (Lm + L1) ≤ 10, or 5 ≤ f3 / (Lm + L1) ≤ 9, etc.

[0294] In some examples, the focal length of the second lens group 20 is f2, the focal length of the third lens group 30 is f3, and the focal length of the fourth lens group 40 is f4, wherein f2, f3, and f4 satisfy: 0.5<(f3-f4) / f2<5. For example, 0.8≤(f3-f4) / f2≤3, 1.5≤(f3-f4) / f2≤4.0.

[0295] By constraining the focal length of each lens group as above, the present application can balance the aberration and chromatic aberration in the two imaging modes, so that the optical lens 110 can have a better imaging effect in both imaging modes. And it can prevent sudden changes in the picture before and after the mode switching (i.e. during the zooming process), thereby improving the user experience.

[0296] In some examples, the focal length of the third lens group 30 is f3, and the effective focal length of the optical lens 110 in the first imaging mode is EFL1, wherein f3 and EFL1 satisfy: EFL1 / f3>1.1.

[0297] In some examples, the focal length of the third lens group 30 is f3, and the effective focal length of the optical lens 110 in the second imaging mode is EFL2, wherein f3 and EFL2 satisfy: EFL2 / f3>1.0.

[0298] The following is combined with specific optical data to present Fig. 22 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0299] Please refer to Table 2a, Table 2b and Table 2c, among which Table 2a is Fig. 22 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 2b and Table 2c. The thickness includes the thickness of the lens itself and the distance between the lenses. Fig. 22 The aspheric coefficients, R values, and K values ​​of each lens of the optical lens 110 in a possible embodiment are shown.

[0300] Table 2a:

[0301]

[0302]

[0303] Table 2b:

[0304] Face number R K A4 A6 A8 A10 A12 A14 S1 2.36E+01 0.00E+00 1.93E-04 -8.87E-05 3.02E-05 -6.18E-06 8.25E-07 -7.40E-08 S2 -1.02E+02 0.00E+00 5.45E-05 3.09E-06 -1.08E-07 -2.76E-08 6.01E-09 -4.86E-10 S3 2.25E+01 0.00E+00 -4.97E-05 1.42E-05 -2.72E-06 2.75E-07 -1.51E-08 3.33E-10 S4 -9.81E+01 0.00E+00 -2.18E-05 1.21E-05 -2.68E-06 3.18E-07 -2.26E-08 9.85E-10 S7 2.61E+01 5.10E+00 5.86E-04 4.22E-04 -3.55E-04 1.44E-04 -3.32E-05 3.85E-06 S8 -1.06E+01 9.42E-02 2.19E-02 -9.99E-03 4.28E-03 -1.51E-03 4.42E-04 -1.01E-04 S9 6.75E+01 -5.33E+01 2.20E-02 -1.78E-02 8.97E-03 -3.42E-03 1.01E-03 -2.27E-04 S10 4.97E+00 0.00E+00 9.46E-04 -9.46E-03 5.28E-03 -2.07E-03 6.06E-04 -1.28E-04 S11 1.91E+01 3.21E-01 1.72E-03 -2.08E-03 7.82E-04 -2.27E-04 2.88E-05 8.57E-06 S12 -8.19E+00 -9.49E-02 2.90E-04 -5.66E-04 3.94E-04 -1.72E-04 4.84E-05 -8.92E-06 S13 -2.97E+00 -1.00E+00 4.37E-02 -1.14E-02 3.29E-03 -8.99E-04 2.08E-04 -3.84E-05 S14 -4.09E+00 0.00E+00 4.93E-02 -1.15E-02 2.77E-03 -5.33E-04 7.57E-05 -7.29E-06 S15 -3.28E+01 0.00E+00 1.64E-02 -8.54E-03 2.48E-03 -3.53E-04 -3.25E-05 3.17E-05 S16 -1.42E+01 0.00E+00 -3.05E-03 -2.44E-03 5.14E-04 3.50E-04 -2.34E-04 7.23E-05 S17 6.49E+00 0.00E+00 -2.29E-02 5.11E-04 1.56E-04 4.00E-04 -2.34E-04 6.68E-05 S18 3.82E+00 -1.00E+00 -1.87E-02 8.73E-04 5.50E-04 -2.03E-04 3.81E-05 -4.63E-06

[0305] Table 2c:

[0306] Face number A16 A18 A20 A22 A24 A26 A28 A30 S1 4.53E-09 -1.89E-10 5.23E-12 -9.11E-14 8.86E-16 -3.40E-18 -2.12E-21 -2.49E-23 S2 2.02E-11 -4.20E-13 3.46E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 8.45E-12 -7.66E-13 2.13E-14 -2.78E-16 1.43E-18 0.00E+00 0.00E+00 0.00E+00 S4 -2.58E-11 3.72E-13 -2.28E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.02E-08 -5.41E-08 8.40E-09 -6.63E-10 3.12E-11 -8.70E-13 1.30E-14 -7.64E-17 S8 1.73E-05 -2.16E-06 1.93E-07 -1.22E-08 5.29E-10 -1.51E-11 2.52E-13 -1.89E-15 S9 3.74E-05 -4.46E-06 3.83E-07 -2.34E-08 9.89E-10 -2.75E-11 4.53E-13 -3.35E-15 S10 1.91E-05 -1.98E-06 1.42E-07 -6.85E-09 2.13E-10 -3.86E-12 3.09E-14 0.00E+00 S11 -4.66E-06 9.94E-07 -1.24E-07 9.95E-09 -5.17E-10 1.69E-11 -3.17E-13 2.60E-15 S12 1.10E-06 -9.09E-08 4.99E-09 -1.74E-10 3.50E-12 -3.08E-14 0.00E+00 0.00E+00 S13 5.53E-06 -6.08E-07 5.03E-08 -3.06E-09 1.33E-10 -3.86E-12 6.75E-14 -5.35E-16 S14 4.03E-07 -3.24E-09 -1.25E-09 9.12E-11 -2.78E-12 3.25E-14 0.00E+00 0.00E+00 S15 -8.75E-06 1.47E-06 -1.66E-07 1.29E-08 -6.88E-10 2.38E-11 -4.85E-13 4.39E-15 S16 -1.42E-05 1.94E-06 -1.86E-07 1.26E-08 -5.91E-10 1.82E-11 -3.33E-13 2.74E-15 S17 -1.22E-05 1.54E-06 -1.38E-07 8.79E-09 -3.89E-10 1.14E-11 -1.98E-13 1.55E-15 S18 3.74E-07 -1.90E-08 4.29E-10 1.31E-11 -1.40E-12 5.00E-14 -8.83E-16 6.45E-18

[0307] The aspheric surface of the optical lens 110 in Table 2a can be defined by, but not limited to, the following aspheric surface curve equation:

[0308]

[0309] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, see Table 2b and Table 2c.

[0310] Table 2d and Table 2e give other parameter information of the optical lens 110, such as the focal length of each lens group and each lens shown in Table 2d; the image height IMH, effective focal length EFL, equivalent focal length, aperture coefficient Fno, optical total length TTL, macro focus distance, macro magnification, the aforementioned parameters L1 and Lm, etc. of the optical lens 110 in the first imaging mode and the second imaging mode shown in Table 2e. It can be determined by calculation that f1 / f2=1.16>1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1)=5.90, which is within the aforementioned preset interval (2-15); (f3-f4) / f2=0.89, which is within the aforementioned preset interval (0.5-5).

[0311] Table 2d:

[0312]

[0313] Table 2e:

[0314] parameter First imaging mode Second imaging mode IMH / mm 6.26 3.25 MIC / mm 6.78 3.77 EFL / mm 24.05 32 Equivalent focal length / mm 76.74 183.64 Fno 1.98 3.2 TTL / mm 46.4 37.18 Macro focusing distance / mm - 94.6 Macro magnification - 0.25 L1 / mm 0.15 - Lm / mm - 2.53

[0315] Fig.23 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.23 Part (a) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Fig.23 Part (b) is a schematic diagram of the structure when the camera module 100 is in the second imaging mode and focuses on infinity. Fig.23 Part (c) is a schematic diagram of the structure of the camera module 100 when it is in the second imaging mode and focuses on the macro distance. Fig.23 The structural details of the optical lens 110 are further introduced.

[0316] like Fig.23As shown, in the embodiment of the present application, the first lens group 10 includes a first lens 111 and a third lens 113, and the second lens group 20 includes a second lens 112. The rear lens group includes a third lens group 30 and a fourth lens group 40 sequentially arranged along the third optical axis OA3, and the third lens group 30 is a focusing lens group that can move forward and backward along the third optical axis OA3. Among them, the third lens group 30 includes a fourth lens 114, a fifth lens 115 and a sixth lens 116 sequentially arranged along the third optical axis OA3, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118 and a ninth lens 119 sequentially arranged along the third optical axis OA3.

[0317] The following is combined with specific optical data to present Fig.23 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0318] Please refer to Table 3a, Table 3b and Table 3c. Table 3a is Fig.23 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 3b and Table 3c. The thickness includes the thickness of the lens itself and the distance between the lenses. Fig.23 The aspheric coefficients, R values, and K values ​​of each lens of the optical lens 110 in a possible embodiment are shown.

[0319] Table 3a:

[0320]

[0321]

[0322] Table 3b:

[0323] Face number R K A4 A6 A8 A10 A12 A14 S1 3.46E+01 0.00E+00 2.89E-04 -1.34E-04 1.43E-05 1.97E-06 -5.88E-07 6.31E-08 S2 -3.74E+01 0.00E+00 1.34E-03 -8.28E-04 2.09E-04 -2.77E-05 2.23E-06 -1.16E-07 S3 1.30E+02 0.00E+00 3.24E-05 -2.78E-04 8.83E-05 -1.44E-05 1.30E-06 -6.79E-08 S4 5.86E+01 0.00E+00 -8.10E-04 2.71E-04 -6.05E-05 6.71E-06 -4.58E-07 2.12E-08 S5 2.29E+01 0.00E+00 -2.90E-05 -9.19E-06 9.89E-07 -3.44E-08 -4.87E-09 7.05E-10 S6 -5.81E+01 0.00E+00 2.39E-06 -2.06E-05 4.10E-06 -5.13E-07 4.12E-08 -2.21E-09 S9 1.48E+01 0.00E+00 1.73E-03 -6.86E-04 8.95E-04 -5.63E-04 2.17E-04 -5.59E-05 S10 2.74E+02 0.00E+00 -2.44E-03 7.49E-03 -3.44E-03 7.69E-04 -2.86E-05 -3.49E-05 S11 5.79E+00 0.00E+00 -1.15E-02 8.95E-03 -4.25E-03 1.21E-03 -2.03E-04 1.27E-05 S12 3.65E+00 -1.00E+00 -9.07E-03 2.72E-03 -6.23E-04 -5.14E-05 9.21E-05 -3.65E-05 S13 2.18E+01 0.00E+00 -1.32E-04 -2.43E-04 3.98E-04 -2.55E-04 9.99E-05 -2.70E-05 S14 -9.34E+00 0.00E+00 -2.24E-04 -9.41E-05 7.84E-05 -2.81E-05 5.33E-06 -5.89E-07 S15 -3.45E+00 -1.00E+00 2.56E-02 -1.24E-03 -8.61E-04 3.81E-04 -1.04E-04 2.21E-05 S16 -5.73E+00 0.00E+00 1.82E-02 3.55E-03 -2.00E-03 4.45E-04 -5.90E-05 5.02E-06 S17 -3.17E+01 0.00E+00 -1.83E-02 1.35E-02 -4.33E-03 8.28E-04 -8.32E-05 -2.85E-06 S18 -6.42E+01 0.00E+00 -2.18E-02 1.51E-02 -4.92E-03 1.01E-03 -1.27E-04 4.22E-06 S19 6.15E+00 0.00E+00 -1.31E-02 6.24E-03 -2.32E-03 5.73E-04 -9.73E-05 1.15E-05 S20 6.02E+00 0.00E+00 -4.57E-03 -8.98E-04 5.11E-04 -1.69E-04 3.93E-05 -6.60E-06

[0324] Table 3c:

[0325]

[0326]

[0327] The aspheric surface of the optical lens 110 in Table 3a can be defined by, but not limited to, the following aspheric surface curve equation:

[0328]

[0329] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α iis the i-th order aspheric coefficient, see Table 3b and Table 3c.

[0330] Table 3d and Table 3e give other parameter information of the optical lens 110, such as the focal length of each lens group and each lens shown in Table 3d; the image height IMH, effective focal length EFL, equivalent focal length, aperture coefficient Fno, optical total length TTL, macro focus distance, macro magnification, the aforementioned parameters L1 and Lm, etc. of the optical lens 110 in the first imaging mode and the second imaging mode shown in Table 3e. It can be determined by calculation that f1 / f2=1.25>1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1)=5.92, which is within the aforementioned preset interval (2-15); (f3-f4) / f2=0.93, which is within the aforementioned preset interval (0.5-5).

[0331] Table 3d:

[0332]

[0333] Table 3e:

[0334]

[0335]

[0336] Fig.24 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.24 Part (a) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Fig.24 Part (b) is a schematic diagram of the structure when the camera module 100 is in the second imaging mode and focuses on infinity. Fig.24 Part (c) is a schematic diagram of the structure of the camera module 100 when it is in the second imaging mode and focuses on the macro distance. Fig.24 The structural details of the optical lens 110 are further introduced.

[0337] like Fig.24 As shown, in the embodiment of the present application, the first lens group 10 includes a first lens 111 and a third lens 113, and the second lens group 20 includes a second lens 112. The rear lens group includes a third lens group 30 and a fourth lens group 40 sequentially arranged along the third optical axis OA3, and the third lens group 30 is a focusing lens group that can move forward and backward along the third optical axis OA3. Among them, the third lens group 30 includes a fourth lens 114, a fifth lens 115 and a sixth lens 116 sequentially arranged along the third optical axis OA3, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118 and a ninth lens 119 sequentially arranged along the third optical axis OA3.

[0338] The following is combined with specific optical data to present Fig.24 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0339] Please refer to Table 4a, Table 4b and Table 4c. Table 4a is Fig.24 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 4b and Table 4c. The thickness includes the thickness of the lens itself and the distance between the lenses. Fig.24 The aspheric coefficients, R values, and K values ​​of each lens of the optical lens 110 in a possible embodiment are shown.

[0340] Table 4a:

[0341]

[0342] Table 4b:

[0343] Face number R K A4 A6 A8 A10 A12 A14 S1 3.25E+01 0.00E+00 2.89E-05 9.51E-05 -3.28E-05 6.66E-06 -8.23E-07 6.46E-08 S2 -3.99E+01 0.00E+00 7.52E-04 -7.02E-05 2.61E-06 7.99E-09 -1.36E-09 0.00E+00 S3 8.05E+01 0.00E+00 5.64E-04 -5.04E-04 1.23E-04 -1.70E-05 1.37E-06 -6.58E-08 S4 5.10E+01 0.00E+00 -3.95E-04 -8.06E-05 2.28E-05 -3.34E-06 2.81E-07 -1.37E-08 S5 2.36E+01 0.00E+00 -6.94E-06 -1.41E-05 1.90E-06 -1.58E-07 6.95E-09 -6.82E-11 S6 -6.56E+01 0.00E+00 2.43E-05 -2.43E-05 4.34E-06 -5.03E-07 3.76E-08 -1.86E-09 S9 1.49E+01 0.00E+00 -3.06E-04 1.49E-03 -5.17E-04 -6.01E-05 1.29E-04 -5.57E-05 S10 4.74E+01 0.00E+00 -6.63E-03 1.43E-02 -1.01E-02 4.30E-03 -1.15E-03 1.96E-04 S11 5.97E+00 0.00E+00 -1.02E-02 1.24E-02 -9.28E-03 4.22E-03 -1.24E-03 2.46E-04 S12 4.15E+00 0.00E+00 -6.58E-03 2.57E-03 -2.14E-03 1.07E-03 -3.37E-04 6.65E-05 S13 2.75E+01 0.00E+00 4.48E-04 -2.70E-04 2.19E-04 -1.70E-04 8.68E-05 -2.90E-05 S14 -9.02E+00 0.00E+00 1.42E-04 -2.94E-04 1.29E-04 -3.72E-05 6.61E-06 -7.15E-07 S15 -2.99E+00 -1.00E+00 4.08E-02 -7.45E-03 6.27E-04 2.37E-04 -1.33E-04 3.77E-05 S16 -4.19E+00 0.00E+00 4.28E-02 -5.01E-03 -5.11E-04 4.22E-04 -9.96E-05 1.35E-05 S17 -9.55E+00 0.00E+00 1.21E-02 -3.36E-03 3.78E-03 -3.12E-03 1.39E-03 -3.88E-04 S18 -1.09E+01 0.00E+00 -2.11E-02 2.68E-02 -1.23E-02 2.27E-03 2.00E-04 -2.15E-04 S19 8.35E+00 0.00E+00 -3.61E-02 3.49E-02 -1.95E-02 6.62E-03 -1.50E-03 2.39E-04 S20 6.50E+00 0.00E+00 -8.32E-03 1.80E-03 -6.22E-04 1.33E-04 -1.55E-05 4.09E-07

[0344] Table 4c:

[0345] Face number A16 A18 A20 A22 A24 A26 A28 A30 S1 -3.29E-09 1.08E-10 -2.19E-12 2.45E-14 -1.05E-16 -1.91E-19 0.00E+00 0.00E+00 S2 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 1.85E-09 -2.82E-11 1.79E-13 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 3.81E-10 -5.55E-12 3.24E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -9.45E-12 5.54E-13 -1.44E-14 1.89E-16 -1.02E-18 0.00E+00 0.00E+00 0.00E+00 S6 5.88E-11 -1.08E-12 7.26E-15 1.13E-16 -2.59E-18 1.50E-20 0.00E+00 0.00E+00 S9 1.34E-05 -2.06E-06 2.16E-07 -1.55E-08 7.50E-10 -2.36E-11 4.35E-13 -3.56E-15 S10 -2.02E-05 9.41E-07 4.38E-08 -1.02E-08 7.53E-10 -3.01E-11 6.53E-13 -6.03E-15 S11 -3.31E-05 3.02E-06 -1.82E-07 6.58E-09 -9.21E-11 -2.52E-12 1.25E-13 -1.54E-15 S12 -7.95E-06 4.71E-07 8.36E-09 -3.93E-09 3.29E-10 -1.43E-11 3.30E-13 -3.22E-15 S13 6.44E-06 -9.71E-07 1.00E-07 -7.12E-09 3.39E-10 -1.03E-11 1.82E-13 -1.41E-15 S14 4.52E-08 -1.46E-09 1.34E-11 2.37E-13 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -7.37E-06 1.05E-06 -1.09E-07 8.22E-09 -4.34E-10 1.52E-11 -3.19E-13 3.00E-15 S16 -1.14E-06 5.89E-08 -1.65E-09 1.57E-11 1.42E-13 0.00E+00 0.00E+00 0.00E+00 S17 7.38E-05 -9.94E-06 9.60E-07 -6.61E-08 3.16E-09 -9.96E-11 1.84E-12 -1.51E-14 S18 5.88E-05 -9.60E-06 1.06E-06 -8.04E-08 4.21E-09 -1.45E-10 2.94E-12 -2.68E-14 S19 -2.73E-05 2.25E-06 -1.31E-07 5.19E-09 -1.26E-10 1.36E-12 8.46E-15 -2.69E-16 S20 1.66E-07 -3.04E-08 2.81E-09 -1.65E-10 6.34E-12 -1.56E-13 2.24E-15 -1.42E-17

[0346] The aspheric surface of the optical lens 110 in Table 4a can be defined by, but not limited to, the following aspheric surface curve equation:

[0347]

[0348] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, see Table 4b and Table 4c.

[0349] Table 4d and Table 4e give other parameter information of the optical lens 110, such as the focal length of each lens group and each lens shown in Table 4d; the image height IMH, effective focal length EFL, equivalent focal length, aperture coefficient Fno, optical total length TTL, macro focus distance, macro magnification, the aforementioned parameters L1 and Lm, etc. of the optical lens 110 in the first imaging mode and the second imaging mode shown in Table 4e. It can be determined by calculation that f1 / f2=1.27>1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1)=5.88, which is within the aforementioned preset interval (2-15); (f3-f4) / f2=0.95, which is within the aforementioned preset interval (0.5-5).

[0350] Table 4d:

[0351]

[0352] Table 4e:

[0353] parameter First imaging mode Second imaging mode IMH / mm 6.25 3.125 MIC / mm 6.77 3.675 EFL / mm 24.12 31.98 Equivalent focal length / mm 77.08 188.27 Fno 1.98 3.2 TTL / mm 46.94 37.36 Macro focusing distance / mm - 95.81 Macro magnification - 0.25 L1 / mm 0.3 - Lm / mm - 2.4

[0354] Fig.25 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.25 Part (a) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Fig.25 Part (b) is a schematic diagram of the structure when the camera module 100 is in the second imaging mode and focuses on infinity. Fig.25 Part (c) is a schematic diagram of the structure of the camera module 100 when it is in the second imaging mode and focuses on the macro distance. Fig.25 The structural details of the optical lens 110 are further introduced.

[0355] like Fig.25 As shown, in the embodiment of the present application, the first lens group 10 includes a first lens 111 and a third lens 113, and the second lens group 20 includes a second lens 112 and a tenth lens 123. The rear lens group includes a third lens group 30 and a fourth lens group 40 sequentially arranged along the third optical axis OA3, and the third lens group 30 is a focusing lens group that can move forward and backward along the third optical axis OA3. Among them, the third lens group 30 includes a fourth lens 114, a fifth lens 115 and a sixth lens 116 sequentially arranged along the third optical axis OA3, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118 and a ninth lens 119 sequentially arranged along the third optical axis OA3.

[0356] The following is combined with specific optical data to present Fig.25 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0357] Please refer to Table 5a, Table 5b and Table 5c together, among which Table 5a is Fig.25 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 5b and Table 5c. The thickness includes the thickness of the lens itself and the distance between the lenses. Fig.25 The aspheric coefficients, R values, and K values ​​of each lens of the optical lens 110 in a possible embodiment are shown.

[0358] Table 5a:

[0359]

[0360]

[0361] Table 5b:

[0362] Face number R K A4 A6 A8 A10 A12 A14 S1 2.73E+01 0.00E+00 -3.11E-04 1.53E-05 -9.30E-06 5.56E-06 -1.14E-06 1.24E-07 S2 -5.83E+01 0.00E+00 -2.46E-03 2.22E-03 -1.10E-03 3.11E-04 -5.47E-05 6.33E-06 S3 7.43E+02 0.00E+00 -1.72E-03 2.27E-03 -1.09E-03 2.79E-04 -4.30E-05 3.98E-06 S4 1.25E+02 0.00E+00 2.66E-05 4.97E-04 -2.21E-04 3.78E-05 -9.82E-07 -8.11E-07 S5 2.11E+01 0.00E+00 -1.79E-04 8.93E-07 -3.76E-07 5.17E-08 -3.74E-09 2.16E-10 S6 1.14E+02 0.00E+00 -3.41E-03 2.52E-04 -4.33E-06 -5.93E-07 6.38E-08 -4.05E-09 S7 6.64E+01 0.00E+00 -2.68E-03 1.94E-04 -1.16E-06 -4.39E-07 2.08E-08 -3.84E-10 S8 -1.35E+02 0.00E+00 2.29E-04 -3.89E-05 5.16E-06 -3.37E-07 1.11E-08 -1.78E-10 S11 1.82E+01 0.00E+00 4.22E-03 -1.66E-03 7.96E-04 -3.18E-04 1.11E-04 -2.95E-05 S12 -1.33E+03 0.00E+00 6.45E-03 -5.09E-03 3.58E-03 -1.51E-03 4.76E-04 -1.15E-04 S13 5.43E+00 0.00E+00 -6.54E-03 -2.93E-03 2.77E-03 -1.09E-03 3.04E-04 -6.65E-05 S14 3.55E+00 -1.00E+00 -1.05E-02 7.22E-04 2.89E-04 -8.80E-05 1.81E-05 -7.08E-06 S15 2.09E+01 0.00E+00 -3.28E-04 -6.23E-04 4.77E-04 -2.31E-04 8.33E-05 -2.19E-05 S16 -9.43E+00 0.00E+00 -2.88E-04 -8.59E-05 3.49E-05 -8.31E-06 1.35E-06 -1.50E-07 S17 -3.31E+00 -1.00E+00 3.11E-02 -5.12E-03 1.08E-03 -3.97E-04 1.53E-04 -4.44E-05 S18 -5.61E+00 0.00E+00 2.50E-02 -7.58E-04 -5.69E-04 1.67E-04 -2.36E-05 1.74E-06 S19 -2.45E+01 0.00E+00 -1.72E-02 9.98E-03 -2.00E-03 -1.05E-04 1.90E-04 -6.26E-05 S20 6.68E+01 0.00E+00 -3.73E-02 2.08E-02 -6.22E-03 1.19E-03 -1.26E-04 -2.92E-06 S21 4.88E+00 0.00E+00 -3.16E-02 1.43E-02 -4.69E-03 1.07E-03 -1.75E-04 2.02E-05 S22 6.49E+00 0.00E+00 -4.67E-03 -1.08E-03 7.39E-04 -2.64E-04 6.28E-05 -1.05E-05

[0363] Table 5c:

[0364] Face number A16 A18 A20 A22 A24 A26 A28 A30 S1 -7.95E-09 3.14E-10 -7.50E-12 9.79E-14 -5.11E-16 -4.17E-19 -1.97E-21 0.00E+00 S2 -5.00E-07 2.73E-08 -1.04E-09 2.73E-11 -4.81E-13 5.45E-15 -3.73E-17 1.33E-19 S3 -1.93E-07 -4.75E-11 6.76E-10 -4.82E-11 1.80E-12 -3.94E-14 4.83E-16 -2.56E-18 S4 1.76E-07 -1.95E-08 1.37E-09 -6.43E-11 2.02E-12 -4.08E-14 4.81E-16 -2.51E-18 S5 -1.02E-11 3.15E-13 -5.59E-15 5.05E-17 -1.75E-19 0.00E+00 0.00E+00 0.00E+00 S6 1.89E-10 -6.37E-12 1.48E-13 -2.24E-15 1.98E-17 -7.79E-20 0.00E+00 0.00E+00 S7 2.59E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 1.12E-12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S11 5.51E-06 -7.20E-07 6.60E-08 -4.24E-09 1.88E-10 -5.45E-12 9.36E-14 -7.21E-16 S12 2.08E-05 -2.70E-06 2.53E-07 -1.68E-08 7.70E-10 -2.33E-11 4.17E-13 -3.36E-15 S13 1.13E-05 -1.43E-06 1.31E-07 -8.65E-09 3.95E-10 -1.19E-11 2.12E-13 -1.70E-15 S14 2.24E-06 -4.32E-07 5.28E-08 -4.26E-09 2.28E-10 -7.80E-12 1.55E-13 -1.36E-15 S15 4.11E-06 -5.46E-07 5.17E-08 -3.45E-09 1.59E-10 -4.77E-12 8.44E-14 -6.65E-16 S16 1.05E-08 -3.90E-10 4.65E-12 6.47E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S17 9.25E-06 -1.39E-06 1.52E-07 -1.20E-08 6.57E-10 -2.40E-11 5.22E-13 -5.12E-15 S18 -3.76E-08 -3.38E-09 2.37E-10 -3.63E-12 -4.04E-14 0.00E+00 0.00E+00 0.00E+00 S19 1.23E-05 -1.64E-06 1.54E-07 -1.00E-08 4.38E-10 -1.19E-11 1.70E-13 -8.13E-16 S20 3.77E-06 -7.51E-07 8.83E-08 -6.92E-09 3.65E-10 -1.25E-11 2.50E-13 -2.23E-15 S21 -1.62E-06 7.99E-08 -1.33E-09 -1.18E-10 1.01E-11 -3.65E-13 6.83E-15 -5.37E-17 S22 1.27E-06 -1.12E-07 7.21E-09 -3.35E-10 1.09E-11 -2.35E-13 3.01E-15 -1.74E-17

[0365] The aspheric surface of the optical lens 110 in Table 5a can be defined by, but not limited to, the following aspheric surface curve equation:

[0366]

[0367] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, see Table 5b and Table 5c.

[0368] Table 5d and Table 5e give other parameter information of the optical lens 110, such as the focal length of each lens group and each lens shown in Table 5d; the image height IMH, effective focal length EFL, equivalent focal length, aperture coefficient Fno, optical total length TTL, macro focus distance, macro magnification, the aforementioned parameters L1 and Lm, etc. of the optical lens 110 in the first imaging mode and the second imaging mode shown in Table 5e. It can be determined by calculation that f1 / f2=1.27>1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1)=5.99, which is within the aforementioned preset interval (2-15); (f3-f4) / f2=0.98, which is within the aforementioned preset interval (0.5-5).

[0369] Table 5d:

[0370]

[0371] Table 5e:

[0372]

[0373]

[0374] Fig.26 is a structural diagram of another camera module 100 provided in an embodiment of the present application, wherein: Fig.26 Part (a) is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Fig.26Part (b) is a schematic diagram of the structure when the camera module 100 is in the second imaging mode and focuses on infinity. Fig.26 Part (c) is a schematic diagram of the structure of the camera module 100 when it is in the second imaging mode and focuses on the macro distance. Fig.26 The structural details of the optical lens 110 are further introduced.

[0375] like Fig.26 As shown, in the embodiment of the present application, the first lens group 10 includes a first lens 111 and a third lens 113, and the second lens group 20 includes a second lens 112. The rear lens group includes a third lens group 30 and a fourth lens group 40 sequentially arranged along the third optical axis OA3, and the third lens group 30 is a focusing lens group that can move forward and backward along the third optical axis OA3. Among them, the third lens group 30 includes a fourth lens 114, a fifth lens 115 and a sixth lens 116 sequentially arranged along the third optical axis OA3, and the fourth lens group 40 includes a seventh lens 117, an eighth lens 118 and a ninth lens 119 sequentially arranged along the third optical axis OA3.

[0376] The following is combined with specific optical data to present Fig.26 The optical lens 110 shown is a concrete solution in a possible embodiment.

[0377] Please refer to Table 6a, Table 6b and Table 6c. Table 6a is Fig.26 The curvature radius, thickness, refractive index (Nd) and Abbe number of each lens of the optical lens 110 in a possible embodiment are shown in Table 6b and Table 6c. The thickness includes the thickness of the lens itself and the distance between the lenses. Fig.26 The aspheric coefficients, R values, and K values ​​of each lens of the optical lens 110 in a possible embodiment are shown.

[0378] Table 6a:

[0379]

[0380]

[0381] Table 6b:

[0382] Face number R K A4 A6 A8 A10 A12 A14 S1 1.91E+01 0.00E+00 8.52E-05 -2.26E-05 1.46E-05 -2.79E-06 2.94E-07 -1.93E-08 S2 -2.52E+01 0.00E+00 7.12E-04 1.38E-04 -3.00E-05 3.03E-06 -1.81E-07 6.72E-09 S3 3.60E+01 0.00E+00 -5.40E-04 9.84E-05 -1.75E-05 1.70E-06 -9.49E-08 3.08E-09 S4 1.17E+01 0.00E+00 -1.76E-03 1.23E-04 -1.14E-05 8.75E-07 -4.65E-08 1.54E-09 S5 2.26E+01 0.00E+00 -8.64E-06 5.43E-06 -1.19E-06 1.39E-07 -8.31E-09 2.08E-10 S6 -1.26E+02 0.00E+00 3.74E-05 -4.21E-06 2.56E-07 2.84E-08 -4.86E-09 2.92E-10 S9 1.57E+01 0.00E+00 1.14E-03 -5.38E-04 1.67E-04 -4.93E-05 1.17E-05 -2.13E-06 S10 1.97E+01 0.00E+00 2.27E-03 6.48E-04 -2.60E-04 4.32E-05 -8.36E-06 1.97E-06 S11 8.00E+00 0.00E+00 -1.03E-02 4.24E-03 -1.01E-03 1.47E-04 -1.76E-05 2.43E-06 S12 4.69E+00 -1.00E+00 -1.69E-02 4.92E-03 -1.06E-03 1.51E-04 -1.44E-05 9.13E-07 S13 9.86E+00 0.00E+00 -5.07E-03 9.00E-04 -5.56E-05 -2.44E-05 8.50E-06 -1.46E-06 S14 -9.87E+00 0.00E+00 -3.33E-04 5.26E-05 -6.21E-06 4.61E-07 -1.96E-08 4.42E-10 S15 -3.71E+00 -1.00E+00 3.05E-02 -6.82E-03 1.68E-03 -4.14E-04 9.04E-05 -1.60E-05 S16 -6.18E+00 0.00E+00 3.68E-02 -8.02E-03 1.70E-03 -3.08E-04 4.33E-05 -4.36E-06 S17 -2.03E+01 0.00E+00 2.42E-02 -8.13E-03 2.19E-03 -4.31E-04 5.42E-05 -2.44E-06 S18 -1.32E+01 0.00E+00 1.87E-02 -5.46E-03 8.82E-04 7.45E-05 -9.02E-05 2.81E-05 S19 1.20E+01 0.00E+00 2.14E-03 -2.71E-03 6.91E-04 -9.46E-05 -1.20E-06 3.82E-06 S20 6.37E+00 0.00E+00 -6.29E-03 3.33E-04 -8.31E-05 2.64E-05 -5.77E-06 8.57E-07

[0383] Table 6c:

[0384] Face number A16 A18 A20 A22 A24 A26 A28 A30 S1 8.22E-10 -2.29E-11 3.99E-13 -3.97E-15 1.71E-17 0.00E+00 0.00E+00 0.00E+00 S2 -1.56E-10 2.08E-12 -1.23E-14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -5.74E-11 5.69E-13 -2.33E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -3.01E-11 3.14E-13 -1.35E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 2.91E-12 -3.36E-13 9.13E-15 -1.13E-16 5.43E-19 0.00E+00 0.00E+00 0.00E+00 S6 -8.88E-12 1.37E-13 -8.55E-16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 2.94E-07 -3.00E-08 2.23E-09 -1.19E-10 4.38E-12 -1.06E-13 1.53E-15 -9.81E-18 S10 -3.37E-07 3.74E-08 -2.75E-09 1.36E-10 -4.47E-12 9.42E-14 -1.15E-15 6.20E-18 S11 -3.37E-07 3.55E-08 -2.59E-09 1.29E-10 -4.30E-12 9.20E-14 -1.15E-15 6.35E-18 S12 -3.80E-08 9.86E-10 -1.42E-11 8.43E-14 -1.65E-16 5.29E-18 0.00E+00 0.00E+00 S13 1.65E-07 -1.32E-08 7.63E-10 -3.14E-11 8.99E-13 -1.69E-14 1.88E-16 -9.23E-19 S14 -2.89E-12 -8.23E-15 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 2.21E-06 -2.31E-07 1.81E-08 -1.03E-09 4.16E-11 -1.12E-12 1.80E-14 -1.31E-16 S16 2.99E-07 -1.30E-08 3.18E-10 -3.18E-12 2.34E-15 -3.18E-16 0.00E+00 0.00E+00 S17 -5.54E-07 1.41E-07 -1.71E-08 1.30E-09 -6.48E-11 2.06E-12 -3.79E-14 3.06E-16 S18 -5.37E-06 7.06E-07 -6.60E-08 4.39E-09 -2.02E-10 6.17E-12 -1.11E-13 9.03E-16 S19 -9.51E-07 1.37E-07 -1.32E-08 8.75E-10 -3.96E-11 1.17E-12 -2.03E-14 1.57E-16 S20 -8.98E-08 6.75E-09 -3.66E-10 1.42E-11 -3.82E-13 6.78E-15 -7.12E-17 3.34E-19

[0385] The aspheric surface of the optical lens 110 in Table 6a can be defined by, but not limited to, the following aspheric surface curve equation:

[0386]

[0387] Where z is the relative distance between a point on the aspherical surface and the intersection point on the optical axis; r is the vertical distance between the point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, see Table 6b and Table 6c.

[0388] Table 6d and Table 6e give other parameter information of the optical lens 110, such as the focal length of each lens group and each lens shown in Table 6d; the image height IMH, effective focal length EFL, equivalent focal length, aperture coefficient Fno, optical total length TTL, macro focus distance, macro magnification, the aforementioned parameters L1 and Lm, etc. of the optical lens 110 in the first imaging mode and the second imaging mode shown in Table 6e. It can be determined by calculation that f1 / f2=1.59>1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1)=5.31, which is within the aforementioned preset interval (2-15); (f3-f4) / f2=1.01, which is within the aforementioned preset interval (0.5-5).

[0389] Table 6d:

[0390]

[0391] Table 6e:

[0392] parameter First imaging mode Second imaging mode IMH / mm 6.25 4 MIC / mm 6.55 4.32 EFL / mm 22.97 36.5 Equivalent focal length / mm 75.87 182.80 Fno 1.94 3.32 TTL / mm 49.78 35.69 Macro focusing distance / mm - 76.38 Macro magnification - 0.3 L1 / mm 0.003 - Lm / mm - 2.99

[0393] Fig. 27 It is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application in a first imaging mode. Fig.28 yes Fig. 27 The camera module 100 shown is a structural schematic diagram in the second imaging mode. Fig. 27 and Fig.28 The embodiment shown can be Figure 5 , Fig.15 as well as Fig.16 The combination of some features of the embodiments shown in the following is obtained. Fig. 27 and Fig.28 The structural details of the camera module 100 are continued to be introduced.

[0394] like Fig. 27 and Fig.28 As shown, in the embodiment of the present application, the light guide module 50 includes a movable reflector 52, or in other words, the movable reflector 52 is the aforementioned light guide module 50, and the movable reflector 52 can be a prism (such as a right-angle prism) or a reflector. The movable reflector 52 can switch its position under the drive of the driving member.

[0395] The movable reflector 52 is located between the front lens group and the rear lens group, and can move (for example, translate) between a first position and a second position. Fig. 27 In the first position shown, the movable reflector 52 reflects the first light from the first lens group 10 to the rear lens group, and the optical lens 110 enters the first imaging mode. Fig.28 In the second position shown, the movable reflector 52 reflects the second light from the second lens group 20 to the rear lens group, and the optical lens 110 enters the second imaging mode. The focal lengths of the first lens group 10 and the second lens group 20 are different. By controlling the movable reflector 52 to switch between the first position and the second position, the effective focal length of the optical lens 110 can be changed, that is, the optical zoom function is realized.

[0396] In the embodiment of the present application, the optical lens 110 further includes a light shielding member, which may be, for example, Fig. 27 , Fig.28 The shading plate 80 in the embodiment of the present invention can be switched between the third position and the fourth position, for example, it can be translated, so as to block the first light or the second light.

[0397] like Fig.28 As shown, when the movable reflector 52 is moved to the second position, the optical lens 110 works in the second imaging mode, and the movable reflector 52 reflects the second light from the second lens group 20. At this time, the light shielding plate 80 is moved to the third position to shield the first light, ensuring that the first light cannot enter the movable reflector 52. In this way, stray light can be prevented from entering the image sensor 120, and the imaging quality of the optical lens 110 can be improved.

[0398] like Fig. 27 As shown, when the movable reflector 52 is moved to the first position, the optical lens 110 works in the first imaging mode, and the movable reflector 52 reflects the first light from the first lens group 10. At this time, the light shielding plate 80 is moved to the fourth position to shield the second light, ensuring that the second light cannot enter the movable reflector 52. In this way, stray light can be prevented from entering the image sensor 120, and the imaging quality of the optical lens 110 can be improved.

[0399] like Fig. 27 and Fig.28 As shown, the rear lens group has a third optical axis OA3, and the rear lens group includes a third lens group 30 and a fourth lens group 40, wherein the third lens group 30 is a focusing lens group that can move forward and backward along the third optical axis OA3, and the light from the movable reflector 52 passes through the third lens group 30, the fourth lens group 40 and the second reflector 60 in sequence, and then enters the image sensor 120.

[0400] In the embodiment of the present application, combined with the above Figure 13-Figure 15 , the second reflector 60 includes a prism 61, or in other words, the second reflector 60 is a prism 61. The prism 61 has an incident surface 613, a first reflective surface 611, and a second reflective surface 612. The light from the third lens group 30 is incident on the inside of the prism 61 through the incident surface 613, and then is reflected by the first reflective surface 611 and the second reflective surface 612 in sequence and then emitted from the first reflective surface 611 to the image sensor 120. The photosensitive surface 122 of the image sensor 120 faces the first reflective surface 611, and the photosensitive surface 122 is tilted relative to the third optical axis OA3. The image sensor 120 is also used for jitter compensation to achieve optical image stabilization.

[0401] In some examples, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. The movable reflector 52 anti-shake is combined with the image sensor 120 anti-shake, thereby having a better anti-shake effect.

[0402] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An optical lens, characterized in that: include: A first lens group (10), a second lens group (20), a light guide module (50) and a rear lens group, the optical lens comprises a first imaging mode and a second imaging mode, wherein: The first lens group (10) and the second lens group (20) are arranged on the object side of the light guide module (50); When the optical lens is in the first imaging mode, the light guide module (50) is used to reflect the first light from the first lens group (10) to the rear lens group, and when the optical lens is in the second imaging mode, the light guide module (50) is used to reflect the second light from the second lens group (20) to the rear lens group, and the optical lens has different effective focal lengths in the first imaging mode and in the second imaging mode; The rear lens group comprises a third lens group (30) and a fourth lens group (40) which are arranged in sequence from the object side to the image side, and at least one lens group of the third lens group (30) and the fourth lens group (40) is a focusing lens group which can move along the optical axis.

2. The optical lens according to claim 1, characterized in that: The focal length of the third lens group (30) is f3, and when the optical lens switches from focusing on infinity to focusing on macro in the second imaging mode, the distance that the third lens group (30) needs to move toward the object side is Lm, and when the optical lens switches from the second imaging mode to the first imaging mode, the focusing distance that the third lens group (30) needs to move is L1, wherein f3, Lm and L1 satisfy: <f3 / (Lm+L1)<15。 3. The optical lens according to claim 1 or 2, characterized in that: The focal lengths of the second lens group (20), the third lens group (30) and the fourth lens group (40) are f2, f3 and f4 respectively, wherein f2, f3 and f4 satisfy: 0.5<(f3-f4) / f2<5.

4. The optical lens according to any one of claims 1 to 3, characterized in that: The focal lengths of the first lens group (10) and the second lens group (20) are different.

5. The optical lens according to any one of claims 1 to 4, characterized in that: The focal length of one of the third lens group (30) and the fourth lens group (40) is positive, and the focal length of the other lens group is negative.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The optical lens further comprises a second reflector (60) located on the image side of the fourth lens group (40), wherein the second reflector (60) is used to deflect light from the fourth lens group (40).

7. The optical lens according to claim 6, characterized in that: The second reflector (60) comprises a prism (61), wherein the prism (61) has an incident surface (613), a first reflective surface (611) and a second reflective surface (612), and the prism (61) is configured such that light from the fourth lens group (40) is incident on the interior of the prism (61) through the incident surface (613), and then is reflected by the first reflective surface (611) and the second reflective surface (612) in sequence, and then is emitted from the first reflective surface (611) to the image sensor (120).

8. The optical lens according to any one of claims 1 to 7, characterized in that: In the first imaging mode, the equivalent focal length of the optical lens is F1, and in the second imaging mode, the equivalent focal length of the optical lens is F2. F1 and F2 satisfy the following relationship: 1<F2 / F1<10.

9. The optical lens according to any one of claims 1 to 8, characterized in that: The light guide module (50) comprises: The movable reflector (52) can move between a first position and a second position. When located at the first position, the movable reflector (52) is used to reflect the first light to the rear lens group. When located at the second position, the movable reflector (52) is used to reflect the second light to the rear lens group.

10. The optical lens according to claim 9, characterized in that: The light guide module (50) further comprises: The first reflector (51) is located between the second lens group (20) and the movable reflector (52), and is used to reflect the second light to the movable reflector (52).

11. The optical lens according to claim 10, characterized in that: When the movable reflector (52) is located at the first position, the reflection plane of the movable reflector (52) is parallel to the optical axis of the second light ray; when the movable reflector (52) is located at the second position, the reflection plane of the movable reflector (52) is parallel to the optical axis of the first light ray.

12. The optical lens according to any one of claims 1 to 8, characterized in that: The light guide module (50) comprises a first reflector (51) and a movable reflector (52), wherein: The first reflecting member (51) is used to reflect the second light to the rear lens group; The movable reflector (52) can move between a first position and a second position. When located at the first position, the movable reflector (52) reflects the first light to the rear lens group and blocks the second light. When located at the second position, the movable reflector (52) avoids the second light.

13. The optical lens according to any one of claims 1 to 8, characterized in that: The light guide module (50) comprises a first reflector (51) and a controllable reflective mirror (53), wherein: The first reflecting member (51) is used to reflect the second light to the rear lens group; The controllable reflective mirror (53) is located between the first reflective element (51) and the rear lens group. The controllable reflective mirror (53) has a transmission mode and a reflection mode. When in the reflection mode, the controllable reflective mirror (53) reflects the first light to the rear lens group and blocks the second light. When in the transmission mode, the second light passes through the controllable reflective mirror (53) and is emitted to the rear lens group.

14. The optical lens according to any one of claims 9 to 11, characterized in that: The optical lens further comprises a light shielding member, wherein the light shielding member is configured as follows: When the movable reflector (52) is moved to the second position, the shading member blocks the first light to prevent the first light from entering the movable reflector (52); and / or, When the movable reflector (52) is moved to the first position, the light shielding member shields the second light to prevent the second light from entering the movable reflector (52).

15. The optical lens according to claim 14, characterized in that: The shading member comprises a shading plate (80) whose position can be changed. When the movable reflector (52) is moved to the second position, the light shielding plate (80) is moved to a third position to shield the first light; When the movable reflector (52) is moved to the first position, the light shielding plate (80) is moved to a fourth position to shield the second light.

16. The optical lens according to claim 15, characterized in that: The movable reflector (52) and the light shielding plate (80) are synchronously driven by the same driving member.

17. The optical lens according to claim 14, characterized in that: The shading plate (80) is fixedly connected to the movable reflector (52), and the shading plate (80) has a light leakage area (81); When the movable reflector (52) is moved to the second position, the second light enters the movable reflector (52) through the light leakage area (81), and the non-light leakage area of ​​the light shielding plate (80) blocks the first light.

18. The optical lens according to claim 14, characterized in that: The shading member comprises a shading plate (80) with a variable mode. When the movable reflector (52) is moved to the second position, the shading plate (80) is switched to a light-transmitting mode corresponding to the second area of ​​the second lens group (20), and the second light is emitted toward the movable reflector (52) through the second area, and the shading plate (80) is switched to a light-shielding mode corresponding to the first area of ​​the first lens group (10) to shield the first light; When the movable reflector (52) is moved to the first position, the shading plate (80) corresponding to the first area of ​​the first lens group (10) switches to a light-transmitting mode, and the first light is emitted toward the movable reflector (52) through the first area. The shading plate (80) corresponding to the second area of ​​the second lens group (20) switches to a light-shielding mode to block the second light.

19. A camera module, characterized in that: The invention comprises an image sensor (120) and an optical lens as claimed in any one of claims 1 to 18, wherein the optical lens is used for projecting light onto the image sensor (120).

20. The camera module according to claim 19, characterized in that: The rear lens group has a third optical axis (OA3), and the camera module further includes: A prism (61), the prism (61) having an incident surface (613), a first reflecting surface (611) and a second reflecting surface (612), the prism (61) being configured such that: light from the rear lens group is incident on the interior of the prism (61) through the incident surface (613), and then is sequentially reflected by the first reflecting surface (611) and the second reflecting surface (612), and then is emitted from the first reflecting surface (611) to the image sensor (120); The photosensitive surface (122) of the image sensor (120) faces the first reflective surface (611), and the photosensitive surface (122) is tilted relative to the third optical axis (OA3). The image sensor (120) is also used for jitter compensation to achieve optical image stabilization.

21. An electronic device, characterized in that: The electronic device includes a camera module as described in claim 19 or 20.

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