Optical lens, camera module and electronic device

Abstract

Provided in the present application are an optical lens, a camera module and an electronic device. 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 rays from the first lens group to the rear lens group, and when the optical lens is in a second imaging mode, the light guide module is used for reflecting second light rays from the second lens group to the rear lens group, the optical lens having 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, at least one of the third lens group and the fourth lens group being a focusing lens group capable of moving along the optical axis. The present application achieves an optical zoom function simply by using a single camera module, thereby overcoming many defects of multi-module relay optical zoom solutions in the prior art.

Description

Optical lenses, camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 8, 2024, with application number 202410179996.0 and application name “Optical lens, camera module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] Compared to digital zoom, which suffers from image loss, optical zoom offers lossless image quality, significantly improving image quality and becoming a key research direction for improving the camera performance of electronic devices. Currently, to achieve optical zoom in portable electronic devices such as mobile phones, multiple camera modules with different focal lengths are typically installed within the device. The device can then switch between these modules based on the user's shooting distance, achieving a relay-style optical zoom function.

[0004] However, with the aforementioned optical zoom solution, multiple camera modules occupy a significant amount of internal space, hindering the slimming and lightweight design of electronic devices and significantly increasing implementation costs. Furthermore, because image sensors in different camera modules may vary in image quality, color, and brightness, this can lead to abrupt image changes during zooming, impacting the user experience. Therefore, alternative optical zoom solutions are urgently needed to address these technical issues.

[0005] Summary of the Invention

[0006] 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.

[0007] 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 the 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 the 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.

[0008] 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 the 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 light from the first lens group or the second lens group to the rear lens group, so that the optical lens can form an image 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 an 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 as to obtain higher quality images, better scene adaptability of the optical lens, and greatly improve the user's shooting experience.

[0009] On this basis, optical zoom can be achieved through a single camera module, thus solving the existing problems of high implementation cost and large size caused by the need for multiple camera modules to work together. In addition, light from different front lens groups can be projected onto the same image sensor. While achieving optical zoom, there is no switching between multiple image sensors, resulting in an abrupt zoom process, thus ensuring a better user experience.

[0010] The rear lens group of the optical lens provided in the embodiments 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 back and forth along the optical axis. This enables the optical lens to have an autofocus function, enabling both long-range telephoto photography and strong close-up (macro) photography capabilities, achieving wide-range imaging from distant to close-up views, with high image quality and clarity.

[0011] In one possible implementation, the focal length of the third lens group is f3. In the second imaging mode, when the optical lens switches from focusing on infinity to focusing on macro, the distance the third lens group needs to move toward the object side is Lm. When the optical lens switches from the second imaging mode to the first imaging mode, the focusing distance the third lens group needs to move is L1. Wherein, f3, Lm and L1 satisfy: <f3 / (Lm+L1)<15。

[0012] By placing the above constraints on relevant parameters, the embodiments of the present application can balance the size (length) of the optical lens and the shooting effect. By placing the above constraints on relevant parameters, on the one hand, the optical lens can be made not too long, thus freeing up space for the miniaturization of electronic devices. On the other hand, the optical lens can not only achieve telephoto and macro shooting functions, but also have a larger magnification in macro shooting, so that the optical lens has better imaging effects.

[0013] 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, where f2, f3, and f4 satisfy: 0.5<(f3-f4) / f2<5.

[0014] By constraining the focal lengths of each lens group as described above, this application balances aberrations and chromatic aberrations in both imaging modes, ensuring that the optical lens achieves optimal imaging results in both modes. Furthermore, the image does not change suddenly before and after mode switching (i.e., during zooming), thereby improving the user experience.

[0015] In a possible implementation, the focal lengths of the first lens group and the second lens group are different.

[0016] 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.

[0017] In a possible implementation, 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.

[0018] 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 offset 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.

[0019] 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.

[0020] 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.

[0021] This embodiment of the present application deflects the propagation angle of light by adding an additional reflector at the rear end of the optical path, allowing for flexible adjustment of the image sensor's placement to achieve better space utilization. This allows the light to be deflected a total of 180 degrees, allowing the image sensor's plane to be parallel to the electronic device's display. This frees the image sensor's placement from the thickness of the electronic device, allowing for larger image sensors, which in turn improves image quality.

[0022] Exemplarily, the second reflective element may be a reflective mirror or a prism.

[0023] In one possible implementation, the second reflective element includes a prism, which has an incident surface, a first reflective surface, and a second reflective surface. 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.

[0024] Through the above settings, 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 image sensor is tilted, so the anti-shake motor that drives the image sensor for shake compensation can also be tilted. This can save space in the thickness direction 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 in the thickness direction can be reduced, which is conducive to reducing the volume of the camera module, thereby bringing convenience to the lightweight design of electronic equipment.

[0025] 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.

[0026] 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.

[0027] By setting up 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 the need for large-scale movement. This can simplify the driving design and help reduce the volume of the lens or module.

[0028] In one 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; 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.

[0029] In one 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, 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.

[0030] In one 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 passes through the controllable transflective mirror and is emitted toward the rear lens group.

[0031] In a possible implementation, the equivalent focal length of the optical lens in the first imaging mode is F1, and the equivalent focal length of the optical lens in the second imaging mode is F2, and F1 and F2 satisfy the following relationship: 1<F2 / F1<10.

[0032] The above configuration allows the optical lens to have a larger zoom ratio, improving its shooting performance and meeting the user's shooting needs at different shooting distances, thereby ensuring a better user experience. For example, the ratio of F2 to F1 can be 2, 3, 4, 5, 6, or 7.

[0033] In one possible implementation, the optical lens further includes a light-shielding member, which is configured such that: when the movable reflector is moved to the second position, the light-shielding 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 light-shielding member blocks the second light to prevent the second light from entering the movable reflector.

[0034] Through the above arrangement, the optical lens does not introduce the second light when forming an image through the first light (i.e., operating in the first imaging mode), effectively avoiding interference of the second light on the imaging. When forming an image through the second light (i.e., operating in the second imaging mode), the optical lens does not introduce the first light, effectively avoiding interference of the first light on the imaging. This can avoid interference between different light rays, and can prevent light rays from different front lens groups from simultaneously entering the image sensor, causing ghost images on the image sensor. This can avoid the introduction of stray light, which is beneficial to improving imaging quality.

[0035] In one possible implementation, the shading member includes a shading plate with a variable position. When the movable reflecting member is moved to the second position, the shading plate is moved to the third position to block the first light; when the movable reflecting member is moved to the first position, the shading plate is moved to the fourth position to block the second light.

[0036] The embodiment of the present application achieves shielding of the first or second light rays by providing a positionally variable light shield, enabling precise control of the light path and ensuring a good shielding effect. Furthermore, the implementation method is simple and easy to implement, which helps save lens space and implementation costs. Furthermore, the operation is highly stable, which helps improve the reliability of the optical lens.

[0037] In a possible implementation, the movable reflector and the light shielding plate are synchronously driven by the same driving member.

[0038] Through the above settings, the same driving component can be reused to achieve the position switching of the sun shading plate and the movable reflector, that is, there is no need to set up additional driving components to drive the sun 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.

[0039] In one possible implementation, the light shielding plate is fixedly connected to the movable reflector, and the light shielding 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 light shielding plate blocks the first light.

[0040] The embodiment of the present application fixes the light shield to the movable reflector, which facilitates the synchronous driving of the two components by the same driving member, can save lens space and implementation costs, facilitates rapid response to user switching operations, and shortens the time required for switching. By setting a light leakage area on the light shield 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. In addition, due to the existence of the light leakage area, the light shield can be set between the front lens group and the movable reflector, and the light shield can span from one side of the movable reflector to the other side, which facilitates the fixed connection between the light shield and the movable reflector and simplifies the connection structure between the two. For example, the light shield can be fixedly set on the mounting seat of the movable reflector, thereby achieving a fixed connection between the two.

[0041] 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 switches to a light-transmitting mode, the second light passes through the second area and is emitted toward the movable reflector, and the shading plate corresponds to the first area of ​​the first lens group and switches to a light-shielding mode to block the first light; when the movable reflector is moved to the first position, the first area of ​​the shading plate corresponding to the first lens group switches to a light-transmitting mode, the first light passes through the first area and is emitted toward the movable reflector, and the shading plate corresponds to the second area of ​​the second lens group and switches to a light-shielding mode to block the second light.

[0042] Through the above settings, 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.

[0043] In a possible implementation, the light guide module is further used to perform jitter compensation to achieve optical image stabilization. For example, the aforementioned movable reflector, first reflector, or controllable transflective mirror is further used to perform jitter compensation to achieve optical image stabilization.

[0044] 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 achieving 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 perform imaging through the first lens group or the second lens group, that is, whether the optical lens works in the first imaging mode or the second imaging mode, optical image stabilization can be achieved through 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 achieve optical zoom while also achieving optical image stabilization, has good imaging quality, high imaging clarity, and improves the user experience.

[0045] In one 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.

[0046] Through the above settings, it can be ensured that regardless of whether the first lens group or the second lens group is used for imaging, that is, regardless of 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 better imaging quality.

[0047] 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.

[0048] 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. The image sensor is also used for jitter compensation to achieve optical image stabilization.

[0049] According to the camera module provided in the embodiment of the present application, the light from the rear lens group enters the prism and can be reflected twice by the first reflective surface and the second reflective surface in succession, and then emitted from the first reflective surface to the image sensor. The photosensitive surface of the image sensor faces the first reflective surface, and the photosensitive surface is tilted relative to the third optical axis. The image sensor is usually a sheet-like 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 shake compensation to achieve optical image stabilization. Since the image sensor is tilted, the anti-shake motor that drives the image sensor to perform shake compensation can also be tilted, thereby saving space in the thickness direction perpendicular to the third optical axis 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 in the thickness direction can be reduced, which is conducive to reducing the volume of the camera module, thereby bringing convenience to the lightweight design of electronic equipment.

[0050] 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 can be 20°, 25°, 27.5°, 30°, 35°, or 40°.

[0051] The above arrangement allows the image sensor to be tilted as much as possible, saving as much thickness and space as possible. Furthermore, it also addresses the angular requirements of optical design, for example, facilitating total internal reflection (TIR) ​​of light on the first reflective surface, allowing it to exit the first reflective surface at a perpendicular angle and enter the photosensitive surface at a perpendicular angle. This angular selection also reduces the difficulty of optical design and improves imaging quality.

[0052] In one possible implementation, the second reflecting surface is parallel to the third optical axis, the angle between the first reflecting surface and the incident surface is α, and the angle between the first reflecting surface and the second reflecting surface is β, where 0°≤|α-2β|≤10°, for example, 0°≤|α-2β|≤5°.

[0053] Because the second reflective surface is parallel to the third optical axis, the values ​​of α and 2β should be as close as possible. The smaller their absolute values, the more likely the light will exit the first reflective surface at a near-perpendicular angle. For example, when α = 2β, the light can exit the image sensor at a 90-degree angle perpendicular to the first reflective surface. This configuration ensures that light exits the first reflective surface at a perpendicular or near-perpendicular angle. At this point, simply aligning the photosensitive surface with the first reflective surface ensures that the exiting light enters the photosensitive surface at a perpendicular or near-perpendicular angle, reducing the difficulty of optical design.

[0054] In a possible implementation, α=55°, β=27.5° or α=60°, β=30°.

[0055] In a third aspect, an electronic device is provided, which includes a camera module provided by any possible implementation method of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

[0057] FIG2 is a schematic structural diagram of a camera module provided in an embodiment of the present application.

[0058] FIG3 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0059] FIG4 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0060] FIG5 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0061] FIG6 is a schematic structural diagram of the camera module shown in FIG5 in the second imaging mode.

[0062] FIG7 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0063] FIG8 is a schematic structural diagram of the camera module shown in FIG7 in the second imaging mode.

[0064] FIG9 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0065] FIG10 is a schematic structural diagram of the camera module shown in FIG9 in the second imaging mode.

[0066] FIG11 is a structural diagram of another example of the camera module shown in FIG9 in the second imaging mode.

[0067] FIG12 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0068] FIG13 is a schematic structural diagram of the camera module shown in FIG12 in the second imaging mode.

[0069] FIG14 is a schematic structural diagram of a prism provided in an embodiment of the present application.

[0070] FIG15 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0071] FIG16 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0072] FIG17 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0073] FIG18 is a schematic structural diagram of a sunshade provided in an embodiment of the present application.

[0074] FIG19 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0075] FIG20 is a schematic structural diagram of another sunshade provided in an embodiment of the present application.

[0076] Figure 21 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0077] Figure 22 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0078] Figure 23 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0079] Figure 24 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0080] Figure 25 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0081] Figure 26 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0082] Figure 27 is a structural schematic diagram of another camera module provided in an embodiment of the present application in the first imaging mode.

[0083] FIG28 is a schematic structural diagram of the camera module shown in FIG27 in the second imaging mode.

[0084] Reference numerals:

[0085] 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 transflective mirror; 60. Second reflector; 61. Prism; 611. First reflective surface; 612. Second reflective surface; 613. Incident surface; 63. Third reflector; 70. Fifth lens group; 80. Light shield; 81. Light aperture; 90. Driving element; 91. Mounting seat;

[0086] 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;

[0087] 200, back cover; 300, display screen; 400, middle frame; 1000, electronic equipment;

[0088] OA1, first optical axis; OA2, second optical axis; OA3, third optical axis. DETAILED DESCRIPTION

[0089] 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 should not be understood as limiting the present application.

[0090] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0091] In the description of this 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 this 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 this application.

[0092] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, 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 this application, unless otherwise specified, "plurality" means two or more.

[0093] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0094] For ease of understanding, the technical terms involved in this application are explained and described below.

[0095] 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 focal plane.

[0096] Optical axis (OA): The direction of light propagation through an optical system, referenced to the principal ray at the center of the field of view. For symmetrical transmissive systems, this axis typically coincides with the system's rotational axis. For off-axis and reflective systems, the optical axis may also appear as a broken line.

[0097] 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 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 side.

[0098] 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 is formed into a sharp image on the focal plane. It can also be understood as the vertical distance from the optical center of the lens or lens group to the focal plane. From a practical perspective, it can be understood as the distance from the center of the lens to the imaging plane.

[0099] Effective focal length (EFL): The distance from the principal plane of an optical system to the corresponding focus.

[0100] Equivalent focal length: Convert the imaging angle on photosensitive elements of different sizes into the focal length of the optical lens corresponding to the same imaging angle on the 135 camera module. This converted focal length is the 135 equivalent focal length, or 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 a 135 camera module. 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 is 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 is 14.8*43.27 / 7.0≈91.5mm.

[0101] Focus: Focusing is also called focusing or focusing. Focusing is the process of changing the distance between the subject and the subject using the camera's focus mechanism to achieve a clear image of the subject. Digital cameras typically have a variety of focus modes, including autofocus, manual focus, and multiple focus modes.

[0102] Autofocus (AF): AF utilizes the principle of light reflection from the subject. After the reflected light passes through the lens, it is imaged and received by the image sensor. Computer processing then determines the object distance, automatically moving the lens based on the object distance to achieve focusing. Autofocus enables objects at varying distances to be imaged clearly on the image sensor. Camera modules typically use a power structure such as a voice coil motor (VCM) to control the forward and backward movement of the optical lens along the optical axis, adjusting the distance between the lens and the image sensor to achieve autofocus.

[0103] 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 an 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 assumed to be 1). The above focal power equation is universal for any optical system (without distinction between paraxial and optical systems).

[0104] Optical power describes 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, this corresponds to plane refraction. In this case, an axially parallel beam remains axially parallel after refraction, without refraction.

[0105] Refractive Index: When light enters a non-absorbing homogeneous material, it will be reflected and refracted at its interface. The refractive index n is equal to the ratio of the speed of light in a vacuum (c) to its speed in the medium (v). In practice, the refractive index is measured by measuring the angle of deflection caused by refraction of a light beam at an interface. The formula describing this deflection is called Snell's law.

[0106] Field of view (FOV): Also known as field of view, in optical instruments, the angle formed by the two edges of the maximum range through which the image of the object can pass through the lens, with the lens as the vertex, is called the field of view.

[0107] Aperture stop (STO): A diaphragm that limits the maximum inclination angle of the marginal rays 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 designed perforated barrier of an optical element in an optical assembly used to limit the size of the imaging beam or the imaging spatial unit.

[0108] 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, it produces a continuous spectrum of colors arranged in sequence from red to violet. 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 the various colors of light are deflected to varying degrees, and thus disperse when leaving the lens, which is called "dispersion."

[0109] Abbe number, also known as dispersion coefficient, is the ratio of the difference in the refractive index of an optical material at different wavelengths, representing the degree of dispersion. The Abbe number is an important indicator of lens imaging quality. A larger Abbe number (dispersion coefficient) indicates less pronounced dispersion and better lens imaging quality. A smaller Abbe number (dispersion coefficient) indicates more pronounced dispersion and poorer lens imaging quality.

[0110] 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 a 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 a point. Instead, there is a certain deviation from the position of the paraxial image point. These differences are collectively called aberrations.

[0111] Image height (ImgH): refers to the total image height of the image formed by the lens.

[0112] With the continuous development of portable electronic devices such as mobile phones, users have increasingly demanded higher camera performance. They not only require features like background blur and clear night shots, but also require telephoto and macro photography. Zoom capability is a key criterion for measuring the camera performance of electronic devices. Common zoom methods include digital zoom and optical zoom. Digital zoom achieves this by cropping and magnifying a portion of the image sensor's image. However, this process can result in pixel loss, reducing image resolution and resulting in poor image quality.

[0113] Compared to digital zoom, which suffers from image loss, optical zoom offers lossless image quality, significantly improving image quality and becoming a key research direction for improving the camera performance of electronic devices. Currently, to achieve optical zoom in portable electronic devices such as mobile phones, multiple camera modules with different focal lengths are typically installed within the device. The device can then switch between these modules based on the user's shooting distance, achieving a relay-style optical zoom function.

[0114] However, with the aforementioned optical zoom solution, multiple camera modules occupy a significant amount of internal space, hindering the slimming and lightweight design of electronic devices and significantly increasing implementation costs. Furthermore, because the image quality, color, and brightness of the image sensors in different camera modules may vary, image changes during the zoom process (i.e., module switching) can be abrupt, impacting the user experience. Therefore, there is an urgent need to provide alternative optical zoom solutions to address these technical issues.

[0115] 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.

[0116] 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 product with a photo or video recording function. The mobile phone may be, for example, a conventional straight-screen mobile phone, or a foldable mobile phone, such as a small foldable mobile phone with top and bottom, a foldable mobile phone with left and right inward folding, or a foldable mobile phone with left and right outward folding. 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 being a mobile phone as an example.

[0117] Figure 1 is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application. As shown in Figure 1, 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 opposite sides of the frame 400. The back cover 200, the display screen 300, and the frame 400 together enclose the entire internal cavity of the electronic device 1000.

[0118] 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 is understandable that the camera module 100 and the image processor can also achieve communication connection through other methods that can achieve data transmission.

[0119] In some examples, the back cover 200 may be provided with a camera hole, through which the camera module 100 collects light, and the camera module 100 may serve as the rear camera of the electronic device 1000. For example, the back cover 200 may include a light-transmitting lens, which is mounted in the camera hole to allow light to pass through and is dust-proof and waterproof. In some cases, the light-transmitting lens may also be considered as part of the camera module 100. The light-transmitting lens may, for example, be the first light-transmitting lens 140 and the second light-transmitting lens 150 in FIG. 1 .

[0120] In some examples, the camera module 100 can also serve as a front camera for the electronic device 1000. For example, 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 serve as either a front camera module or a rear camera module for the electronic device 1000, and this is not strictly limited in the embodiments of the present application.

[0121] In actual 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 sides of the electronic device 1000 in a certain manner. For example, one or more of the camera modules may be arranged on the front side where the display screen 300 is located to serve as a front camera, and the remaining one or more camera modules may be arranged on the back cover 200 to serve as a rear camera.

[0122] 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.

[0123] 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. By plugging the female socket into the male socket, the electrical connection between the camera module 100 and the mainboard is achieved. 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.

[0124] 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). 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. The image processor then processes the digital image signal to obtain a processed image signal, which can be displayed as an image or video on a display screen.

[0125] In some examples, the electronic device 1000 may further include a memory (not shown) that is communicatively connected to the image processor. The image processor transmits the processed image signal to the memory so that the processed image signal can be retrieved from the memory and displayed on the display screen at any time when the image is needed. In some embodiments, the image processor also compresses the processed image signal before storing it in the memory to save memory space.

[0126] FIG2 is a structural diagram of a camera module 100 provided in an embodiment of the present application. As shown in FIG2 , the camera module 100 in the embodiment of the present application includes an optical lens 110 and an image sensor 120 .

[0127] 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 and 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 and given to the image processor.

[0128] Image sensor 120 (also known as a photosensitive element) is a semiconductor chip with hundreds of thousands to millions of photodiodes on its surface. When exposed to light, these diodes generate an electrical charge. Image sensor 120 can be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). A CCD is made of a highly sensitive semiconductor material that converts light into electrical charge. A CCD consists of many photosensitive units, typically measured in megapixels. When light strikes the surface of the CCD (i.e., the photosensitive surface), each photosensitive unit reflects an electrical charge on the component. The signals generated by all the photosensitive units are combined to form a complete image. Complementary metal-oxide semiconductors (CMOS) are primarily made of silicon and germanium, creating a coexistence of N-pole and P-pole semiconductors on the CMOS. The current generated by these two complementary effects can be recorded and interpreted as an image by the processing chip.

[0129] In some examples, the image sensor 120 can move in a plane perpendicular to the thickness of the camera module 100 or tilt relative to the thickness 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 very small travel distance that is much smaller than the focus travel distance to reduce the module thickness. In other embodiments, the image sensor 120 can also be a fixed component and cannot perform shake compensation.

[0130] In some examples, as shown in Figure 2, 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 wavelengths in the light and prevent the image sensor 120 from generating false colors or ripples, so as to improve its effective resolution and color reproduction. Exemplarily, the filter 130 can be an infrared filter, such as an infrared radiation-cut filter (IRCF). 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 eliminated. 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.

[0131] For example, the filter 130 may be realized by evaporating an infrared (IR) material coating on a blue crystal substrate.

[0132] Exemplarily, the filter 130 may be a white glass filter or a blue glass filter.

[0133] The embodiments of the present application mainly involve structural improvements to the optical lens 110. The structural details of the optical lens 110 are described below with reference to the accompanying drawings. As shown in Figure 2, the optical lens 110 includes a plurality of front lens groups, a light guide module 50, and a rear lens group arranged in sequence from the object side to the image side.

[0134] Multiple 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 front lens groups can be, for example, two, three, four, or more. The front lens groups are used to receive external ambient light, which can be emitted into the light guide module 50 through any of the front lens groups. The multiple front lens groups can be arranged in a one-to-one correspondence with the multiple camera holes on the electronic device 1000, that is, the multiple front lens groups can be corresponding to the multiple light-transmitting lenses. The external ambient light passes through the light-transmitting lenses and enters the corresponding front lens group, and then passes through the front lens group and is emitted into the light guide module 50.

[0135] For example, as shown in FIG2 , 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 a light guide module 50. The first lens group 10 is arranged correspondingly to a first light-transmitting lens 140. Ambient light from the outside (referred to as a first light ray) enters the first lens group 10 through the first light-transmitting lens 140, is converged by the first lens group 10, and is then directed toward the light guide module 50. The second lens group 20 is arranged correspondingly to a second light-transmitting lens 150. Ambient light from the outside (referred to as a second light ray) enters the second lens group 20 through the second light-transmitting lens 150, is converged by the second lens group 20, and is then directed toward the light guide module 50.

[0136] 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 one of the multiple upstream optical paths and the downstream optical path 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 one of the multiple upstream optical paths can be connected to the downstream optical path, and the remaining upstream optical paths and downstream optical paths can be disconnected from each other. In other words, the light guide module 50 can transmit the light from any one of the front lens groups to the rear lens group, and prevent the light from the remaining front lens groups from being transmitted to the rear lens group.

[0137] 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, the rear lens group has different effective focal lengths when receiving light from different front lens groups, thereby enabling the optical lens 110 to have the ability of optical zoom.

[0138] For example, as shown in FIG2 , the object side of the light guide module 50 is provided with two front lens groups, namely a first lens group 10 and a 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. In this case, the optical lens 110 forms an image through the first lens group 10 (the first light), and the optical lens 110 enters a first imaging mode, at which 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. In this case, the optical lens 110 can form an image through the second lens group 20 (the second light), and the optical lens 110 enters a second imaging mode, at which time the effective focal length of the optical lens 110 is EFL2. Since the effective focal lengths EFL1 and EFL2 are different, the optical lens 110 can operate at different effective focal lengths, thus providing the optical lens 110 with optical zoom capability.

[0139] 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. 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 before being emitted to the image sensor 120. In the embodiment of the present application, at least one of the third lens group 30 and the fourth lens group 40 is a focusing lens group that can move back and forth along the optical axis. For example, the third lens group 30 and / or the fourth lens group 40 can move back and forth along the optical axis to enable the optical lens 110 to have an autofocus function, thereby enabling the optical lens 110 to achieve both long-distance telephoto shooting with high imaging quality and strong close-up (macro) shooting capabilities, achieving wide object distance imaging from long-range to close-range.

[0140] The optical lens 110 provided in an 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 form an image through different front lens groups, that is, the optical lens 110 can enter a first imaging mode or a 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 rear lens group has different effective focal lengths when receiving light from different front lens groups. As a result, the optical lens 110 has an optical zoom capability, and the optical lens 110 can use different focal lengths (i.e., use different front lens groups or enter different imaging modes) for shooting in different shooting scenes, thereby obtaining higher quality images, improving the scene adaptability of the optical lens 110, and greatly improving the user's shooting experience.

[0141] On this basis, optical zoom can be achieved through a single camera module, thus solving the existing problems of high implementation cost and large size caused by the need for multiple camera modules to work together. In addition, light from different front lens groups can be projected onto the same image sensor. While achieving optical zoom, there is no switching between multiple image sensors, resulting in an abrupt zoom process, thus ensuring a better user experience.

[0142] The rear lens group of the optical lens 110 provided in this 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. This enables the optical lens 110 to have an autofocus function, enabling both long-range telephoto photography and strong close-up (macro) photography capabilities, achieving wide-range imaging from distant to close-up views, with high image quality and clarity.

[0143] In some examples, the focal lengths of the multiple front lens groups are different, for example, the focal lengths of the first lens group 10 and the second lens group 20 are different. With the above arrangement, the optical lens 110 can more easily obtain different effective focal lengths when imaging through different front lens groups, thereby reducing the difficulty of optical path design.

[0144] In some examples, the focal lengths of some or all of the multiple front lens groups can be the same. In this case, the effective focal length of the optical lens system 110 can be changed by varying 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 each lens group and the rear lens group can be different. This arrangement also enables the optical lens system 110 to achieve different effective focal lengths when imaging through different front lens groups.

[0145] In some examples, first lens group 10 and second lens group 20 each include at least one imaging lens. The number of lenses in first lens group 10 and second lens group 20 can be the same or different. For example, first lens group 10 and / or second lens group 20 can include one, two, three, or more lenses. When first lens group 10 and / or second lens group 20 include multiple lenses, the multiple lenses can be spaced sequentially and arranged in parallel along the optical axis.

[0146] In some examples, the focal lengths of first lens group 10 and second lens group 20 are different. Their focal lengths may be both positive, both negative, or one positive and the other negative. The focal length of first lens group 10 may be greater than the focal length of second lens group 20, or the focal length of first lens group 10 may be less than the focal length of second lens group 20.

[0147] FIG3 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application. As shown in FIG3 , as a special implementation method, 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 lenses, that is, no lenses are set on the optical path where the second lens group 20 is located. The second lens group 20 is only equivalent to a light entrance, and 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 focal length of 0.

[0148] In some examples, the first lens group 10 and the second lens group 20 have the same focal length (non-zero), but are spaced at different distances from the rear lens group. This arrangement also allows the optical lens 110 to have different effective focal lengths when imaging with the first lens group 10 or the second lens group 20.

[0149] 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.

[0150] 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, improve the shooting performance of the optical lens 110, meet the user's shooting needs 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.

[0151] In some examples, the light guide module 50 is also used to perform shake 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 to perform shake compensation to achieve optical image stabilization.

[0152] 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 achieving optical image stabilization. Since the light guide module 50 can selectively reflect the light from 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 achieved 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 achieve optical image stabilization while achieving optical zoom, has good imaging quality, high imaging clarity, and improves the user experience.

[0153] In some examples, the light guide module 50 includes one or more optical elements to achieve light path selection. These one or more optical elements can be, for example, one or more reflectors. The light guide module 50 performs jitter compensation to achieve optical image stabilization. One, multiple or all optical elements (such as reflectors) in the light guide module 50 can perform jitter compensation to achieve optical image stabilization. This application does not limit this.

[0154] 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.

[0155] Through the above settings, it can be ensured that regardless of whether the first lens group 10 or the second lens group 20 is used for imaging, that is, regardless of whether the optical lens 110 is operating 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 better imaging quality.

[0156] In some examples, the third lens group 30 and the fourth lens group 40 each include at least one imaging lens. The number of lenses in the third lens group 30 and the fourth lens group 40 can be the same or different. For example, the third lens group 30 and / or the fourth lens group 40 can include two, three, four, or more lenses. When the third lens group 30 and / or the fourth lens group 40 includes multiple lenses, the multiple lenses can be spaced sequentially and arranged in parallel along the optical axis.

[0157] In some examples, the third lens group 30 is a focus lens group that can move back and forth 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 back and forth along the optical axis. Alternatively, both the third lens group 30 and the fourth lens group 40 are focus lens groups that can move back and forth along the optical axis.

[0158] 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 (ie, the closest focusing distance, such as 60-100 mm) satisfies: 0.2 <Mag<0.5。

[0159] In some examples, the focal length of one of the third lens group 30 and the fourth lens group 40 is positive, while the focal length of the other lens group is negative. For example, the focal length of the third lens group 30 is positive (e.g., 13 mm), and the focal length of the fourth lens group 40 is negative (e.g., -11 mm); alternatively, 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, while a negative focal length of a lens group will have a negative effect on aberrations. By combining the focal lengths of the third lens group 30 and the fourth lens group 40 in a positive and negative manner, the aberrations introduced by the two lens groups can be offset. This allows the optical lens 110 to achieve smaller aberrations, thereby improving the imaging quality of the lens.

[0160] In some examples, as shown in FIG2 , multiple front lens groups are arranged in a straight line and are located on the same side of the light guide module 50. For example, the multiple front lens groups can correspond one-to-one with the multiple camera holes or multiple light-transmitting lenses provided on the back cover 200 of the electronic device 1000. The light guide module 50 can reflect light from any of the front lens groups to the rear lens group. In other words, any of the front lens groups and the rear lens group form a periscope-style layout, thereby making the placement and angle of the optical lens 110 more flexible.

[0161] FIG4 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. In some examples, as shown in FIG4 , multiple front lens groups can be arranged on two opposite sides of a 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 can reflect 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. In addition, 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.

[0162] FIG5 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application in a first imaging mode. FIG6 is a schematic diagram of the structure of the camera module 100 shown in FIG5 in a second imaging mode. The camera module 100 provided in this embodiment can be regarded as a more specific and lower-level implementation of the camera module 100 shown in FIG2 . The structural details of the optical lens 110 will be further described below in conjunction with FIG5 and FIG6 .

[0163] As shown in Figures 5 and 6, 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. Specifically, the first lens group 10 and the second lens group 20 are arranged side by side on the object side of the movable reflector 52 as non-shared lens groups, while the third lens group 30 and the fourth lens group 40 are arranged in sequence along the optical axis on the image side of the movable reflector 52 as shared lens groups.

[0164] The first lens group 10 is located on the object side of the movable reflector 52 and is used to receive external light. The first lens group 10 includes at least one lens, for example, a first lens 111. In addition, depending on 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 and is used to receive 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, depending on specific imaging requirements, the first lens group 10 may also include one, three, or more lenses.

[0165] 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 is capable of moving (e.g., translating) between a first position and a second position. When the movable reflector 52 is in the first position shown in FIG5 , the movable reflector 52 reflects the first light from the first lens group 10 to the third lens group 30, at which point the optical lens 110 enters a first imaging mode. When the movable reflector 52 is in the second position shown in FIG6 , the movable reflector 52 reflects the second light from the second lens group 20 to the third lens group 30, at which point the optical lens 110 enters a second imaging mode. The first lens group 10 and the second lens group 20 have different focal lengths. By controlling the movable reflector 52 to switch between the first and second positions, the effective focal length of the optical lens 110 can be changed, thereby achieving an optical zoom function.

[0166] When the movable reflector 52 is moved to the first position shown in FIG. 5 , the optical lens 110 operates in the first imaging mode. The first light ray from the first lens group 10 is reflected by the movable reflector 52 toward the third lens group 30, then passes through the fourth lens group 40, the second reflector 60, and so on, and is incident on the image sensor 120. However, the second light ray from the second lens group 20 cannot enter the third lens group 30. For example, the second light ray may be directed toward other areas within the electronic device 1000 and may be absorbed or consumed. In other words, the movable reflector 52 now connects the first optical axis OA1 corresponding to the first light ray and the exit optical axis of the movable reflector 52, i.e., the third optical axis OA3. However, the second optical axis OA2 corresponding to the second light ray is disconnected from the third optical axis OA3. For example, 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.

[0167] When the movable reflector 52 is moved to the second position shown in Figure 6, the optical lens 110 operates in the second imaging mode. The second light from the second lens group 20 is reflected by the movable reflector 52 to the third lens group 30, and then passes through the fourth lens group 40, the second reflector 60, etc. to enter the image sensor 120. However, the first light from the first lens group 10 cannot enter the third lens group 30. For example, the first 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 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. For example, in the second imaging mode, the effective focal length EFL2 of the optical lens 110 is 33.2mm, the full image height ImgH2 is 7.2mm, and the equivalent focal length F2 is 199.5mm. The ratio of F2 to F1 is 2.47.

[0168] 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 an electric motor, a motor, or a cylinder. For example, a motor can be used as the power component, and a ball screw assembly can be used to drive the movable reflector 52 to translate between the first position and the second position.

[0169] In some examples, the front lens group may include more lenses, and the movable reflector 52 may be movable (e.g., translated) between multiple positions, including the first position and the second position. For example, the front lens group may also include a fifth lens group 70, and the movable reflector 52 may be further movable to a third position. When the movable reflector 52 is in the third position, the movable reflector 52 reflects the third light from the fifth lens group 70 to the third lens group 30.

[0170] In some examples, the movable reflector 52 may be a mirror or a prism, such as a right-angle prism.

[0171] 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, or alloys thereof.

[0172] In some examples, a high-reflective film layer design may be used, where a high-reflective film layer is provided on the reflective surface to improve imaging quality.

[0173] In some examples, considering the optical system's ability to cut off near-infrared and ultraviolet light, the film layer of the reflective surface can be designed to have high reflectivity for visible light (380nm to 780nm) and high transmittance for the ultraviolet band (below 380nm) and the near-infrared band (above 780nm), thereby reducing the amount of non-visible light entering the image sensor 120 and improving the quality of imaging.

[0174] In some examples, the reflectivity of the reflective surface may be required to be greater than 95% within the visible light bandwidth, with no reflectivity constraints for ultraviolet and near-infrared.

[0175] In some examples, the reflective surface of the movable reflector 52 can be a flat surface, which has good processability. Furthermore, 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 a straight line in the other), or a free-form surface. In this case, the reflective surface of the movable reflector 52 can correct for astigmatism and aberrations while reflecting light, thereby further improving image quality or reducing size.

[0176] 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 enhance the imaging quality. For example, the rear lens group can include two to eight lenses, such as two, four, five, or six lenses.

[0177] As shown in Figures 5 and 6, the rear lens group includes a third lens group 30 and a fourth lens group 40, arranged sequentially from the object side to the image side. 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.

[0178] 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 back and forth on the third optical axis OA3 to achieve an autofocus process.

[0179] By varying the distance between the third lens group 30 and the fourth lens group 40, the present application enables the optical lens 110 to achieve both high-quality long-distance telephoto photography and strong close-up photography, enabling wide-range imaging from distant to near scenes. The use of a single-group focusing method simplifies the movement of the optical lens's focusing mechanism, thereby simplifying the focusing process.

[0180] As shown in FIG5 , when the optical lens 110 is focused on a distant view (infinity), the third lens group 30 moves along the optical axis toward the image side. Light reflected by distant objects passes through the optical lens 110 and forms an image on the imaging surface of the image sensor 120. The camera module 100 is capable of capturing distant images. As shown in FIG6 , when the optical lens 110 is focused on a near view, the third lens group 30 moves along the optical axis toward the object side. Light reflected by near view objects passes through the optical lens 110 and forms an image on the imaging surface of the image sensor 120. The camera module 100 is capable of capturing near view images.

[0181] As shown in FIG5 , 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 remains stationary, 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.

[0182] As shown in FIG6 , 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 remains stationary, 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.

[0183] It is worth mentioning that regardless of whether 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, parameters such as the farthest (telephoto) shooting distance, the closest (macro) shooting distance, and the maximum magnification in macro mode of the optical lens 110 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 needs.

[0184] 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 deflection of light is small, which can reduce aberrations and improve imaging quality.

[0185] In some examples, a focus motor can be used to drive the third lens group 30 to move along the optical axis. For example, the focus motor can simultaneously drive the fourth lens 114, the fifth lens 115, and the sixth lens 116 of the third lens group 30 to move toward the object side or the image side along the third optical axis OA3, thereby achieving the aforementioned focusing process. The focus motor can be, for example, a voice coil motor, a piezoelectric motor, a shape memory alloy (SMA) motor, or a stepper motor.

[0186] In some examples, the multiple lenses of the optical lens 110 can be made of the same material, such as glass, resin, etc. Glass has a high refractive index and low expansion properties, which enables the optical lens 110 to have better imaging quality and low-temperature drift characteristics. The low density of resin 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, which is not limited in this application.

[0187] 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.

[0188] In some examples, the optical surface of at least one lens of the optical lens 110 is aspherical. This aspherical optical surface has varying optical powers from the paraxial region to the outer field of view, resulting in more balanced image quality. Alternatively, the optical surface of at least one lens of the optical lens 110 may be a freeform surface to correct for aberrations. An aspherical surface is a surface that is rotationally symmetric about the optical axis; a freeform surface may have no axis of symmetry, be symmetric along a particular direction, or be symmetric along two directions.

[0189] In some examples, the multiple lenses of the optical lens 110 are assembled through an active alignment (AA) process to ensure assembly accuracy.

[0190] 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 configuring the diffraction grating structure, chromatic aberration can be reduced, and the volume of the optical lens 110 can also be reduced.

[0191] In some examples, the optical lens 110 may further include a liquid lens (not shown) to enhance the focusing effect and achieve ultra-close-up photography. A liquid lens is a structural component that uses liquid as a lens and changes the focal length by changing the curvature of the liquid.

[0192] In some examples, at least one lens of the optical lens 110 can adopt special-shaped technology to reduce the size of the optical lens 110, so that the optical lens 110 can be better adapted to the miniaturized electronic device 1000, thereby increasing the scope of application of the optical lens 110. The incision can be achieved through the I-CUT process. In addition, since the height of the lens is reduced by the incision, the lens can be provided with a larger light-transmitting aperture, thereby increasing the amount of light transmitted by the optical lens 110, so that the imaging quality of the optical lens 110 is better. Among them, 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.

[0193] 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 image quality. The blackening treatment can be applied or plated with a matte material such as black ink, or a film. The roughening treatment is mainly used to increase the roughness.

[0194] As shown in FIG. 5 and FIG. 6 , 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 configured to reflect or deflect light from the fourth lens group 40 to the image sensor 120 .

[0195] This embodiment of the present application deflects the propagation angle of light by providing an additional reflector at the rear end of the optical path, thereby flexibly adjusting the placement of the image sensor 120 to achieve better space utilization. The light can now be deflected a total of 180 degrees, allowing the plane of the image sensor 120 to be parallel to the display screen 300 of the electronic device 1000. This frees the placement of the image sensor 120 from being limited by the thickness of the electronic device 1000, allowing for a larger image sensor to be installed, thereby improving imaging quality.

[0196] Exemplarily, the second reflective element 60 may be a reflective mirror or a prism.

[0197] As shown in Figures 5 and 6, the optical lens 110 may further include an aperture stop 121. The aperture stop 121 may be mounted on the front lens group, for example, on the first lens group 10 and the second lens group 20. In this case, the aperture stop 121 has a better aperture adjustment effect, which can improve the imaging quality of the optical lens 110. For example, the aperture stop 121 may be mounted on the end of the front lens group close to the object side. In addition, the aperture stop 121 may also be mounted on other lenses of the front lens group, the third lens group 30, the fourth lens group 40, or other locations of the optical lens 110, and this embodiment of the present application is not strictly limited to this.

[0198] The aperture stop 121 can be a spacer ring structure or a variable fan blade structure; alternatively, the aperture stop 121 can be formed through a surface spraying process, for example, by spraying a light-shielding material onto a lens to form the aperture stop 121. The position of the aperture stop 121 can be fixed or variable. For example, the position of the aperture stop 121 can be variable, and the position of the aperture stop 121 can be adjusted according to the focusing condition to be positioned between different lenses.

[0199] The following presents a possible embodiment of the optical lens 110 shown in FIG. 5 in combination with specific optical data.

[0200] Please refer to Tables 1a, 1b, and 1c. Table 1a lists the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 5. Thickness includes both the thickness of the lens itself and the distance between lenses. Tables 1b and 1c list the aspheric coefficients of each lens in a possible embodiment of the optical lens 110 shown in Figure 5.

[0201] Table 1a:

[0202] Table 1b:

[0203] Table 1c:

[0204] The aspheric surface of the optical lens 110 in Table 1a can be defined using, but not limited to, the following aspheric curve equation:

[0205] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, which can be found in Table 1b and Table 1c.

[0206] FIG7 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application in a first imaging mode. FIG8 is a schematic diagram of the structure of the camera module 100 shown in FIG7 in a second imaging mode. The camera module 100 provided in this embodiment can be regarded as a more specific and lower-level implementation of the camera module 100 shown in FIG2 . Compared with the camera module 100 shown in FIG5 and FIG6 , in this embodiment, the light guide module 50 further includes a first reflector 51.

[0207] Specifically, as shown in Figures 7 and 8, 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 reflector for reflecting the second light to the movable reflector 52. The movable reflector 52 can move (e.g., rotate) between a first position and a second position. When the movable reflector 52 is in the first position shown in Figure 7, 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. When the movable reflector 52 is in the second position shown in Figure 8, 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 first lens group 10 and the second lens group 20 have different focal lengths. 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, thereby achieving an optical zoom function.

[0208] When the movable reflector 52 is rotated to the first position shown in FIG7 , the optical lens 110 operates in the first imaging mode. 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. However, 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. In this case, the second light can be emitted to other areas inside the electronic device 1000 and absorbed or consumed. In other words, the movable reflector 52 connects the first optical axis OA1 and the third optical axis OA3, while the second optical axis OA2 is disconnected from the third optical axis OA3.

[0209] When the movable reflector 52 is moved to the second position shown in FIG8 , the optical lens 110 operates in the second imaging mode. 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. However, 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. In this case, the first light can be emitted to other areas inside the electronic device 1000 and absorbed or consumed. In other words, 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.

[0210] In some examples, as shown in FIG7 , when the movable reflector 52 is in the first position, the reflective plane of the movable reflector 52 is parallel to the second optical axis OA2 and forms a 45° angle with the first optical axis OA1. In this case, the movable reflector 52 reflects the first light ray toward the third lens group 30 without reflecting the second light ray. When the movable reflector 52 is in the second position, the reflective plane of the movable reflector 52 is parallel to the first optical axis OA1 and forms a 45° angle with the second optical axis OA2. In this case, the movable reflector 52 reflects the second light ray toward the third lens group 30 without reflecting the first light ray.

[0211] 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.

[0212] Exemplarily, the first reflector 51 may be a reflector or a prism.

[0213] Compared with the camera module 100 shown in the aforementioned Figures 5 and 6, 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 the need for large-scale movement, thereby simplifying the driving design and helping to reduce the volume of the lens or module.

[0214] In some examples, the first reflector 51 can also be configured as a movable reflector, capable of moving under the drive of a power component. For example, when the movable reflector 52 is moved to the first position shown in Figure 7, the first light from the first lens group 10 is reflected by the movable reflector 52 toward the third lens group 30. At this point, the first reflector 51 can be driven to move to reflect the second light from the second lens group 20 to an area outside the movable reflector 52. In this case, the second light does not reach the movable reflector 52, that is, the movable reflector 52 does not reflect the second light, and the second light does not enter the third lens group 30. Under the reflection effect of the first reflector 51, the second light can be directed to other areas within the electronic device 1000 and absorbed or consumed. With the above configuration, 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 degree of freedom of optical path design and reduce the difficulty of optical path design. In addition, when imaging with the first light, the second light is not introduced, 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.

[0215] FIG9 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application in a first imaging mode. FIG10 is a schematic diagram of the structure of the camera module 100 shown in FIG9 in a second imaging mode. As shown in FIG9 and FIG10, 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 different from those of the corresponding components in the camera module 100 shown in FIG7 and FIG8.

[0216] 9 and 10 , 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 may be a fixed reflector for reflecting the second light toward the third lens group 30. The movable reflector 52 can move between a first position and a second position (e.g., rotate about its left end). When the movable reflector 52 is rotated to the first position shown in FIG. 9 , 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, preventing the second light from reaching the third lens group. At this time, the optical lens 110 enters the first imaging mode. When the movable reflector 52 is rotated to the second position shown in FIG. 10 , the movable reflector 52 avoids the second light, and the second light successfully reaches the third lens group 30 under the reflection of the first reflector 51, while the first light is reflected by the movable reflector 52 to an area outside the third lens group 30. At this time, 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, thereby achieving an optical zoom function.

[0217] When the movable reflector 52 is rotated to the first position shown in FIG. 9 , the optical lens 110 operates in the first imaging mode. The first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then passes through the fourth lens group 40 to enter the image sensor 120. However, 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 surface 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. In this case, the second light can be emitted to other areas inside the electronic device 1000 and absorbed or consumed.

[0218] When the movable reflector 52 is moved to the second position shown in FIG. 10 , the optical lens 110 operates in the second imaging mode. The movable reflector 52 avoids the second light ray. For example, the reflective surface of the movable reflector 52 is parallel to the third optical axis OA3. The second light ray is reflected by the first reflector 51 to the third lens group 30, and then passes through the fourth lens group 40 to enter the image sensor 120. The first light ray from the first lens group 10 is blocked by the movable reflector 52. For example, the first light ray is reflected to an area outside the third lens group 30, or the movable reflector 52 does not reflect the first light ray. In this case, the first light ray can be emitted to other areas inside the electronic device 1000 and absorbed or consumed.

[0219] In some examples, as shown in Figures 9 and 10, the left end of the movable reflector 52 can be used as a rotation axis, and the movable reflector 52 can rotate about this left end. For example, the movable reflector 52 in the first position in Figure 9 can be rotated 45° counterclockwise about the left end to reach the second position in Figure 10. When the movable reflector 52 is in the second position, it is adjacent to the first lens group 10, and the reflective surface is parallel to the lens plane of the first lens group 10. Furthermore, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise about the left end.

[0220] FIG11 is a schematic structural diagram of another example of the camera module 100 shown in FIG9 in the second imaging mode. In some examples, as shown in FIG9 and FIG11, the right end of the movable reflector 52 can also be set as a rotating axis, and the movable reflector 52 rotates around the right end. For example, the movable reflector 52 located in the first position in FIG9 rotates 45° counterclockwise about the right end as the axis to reach the second position in FIG11. When the movable reflector 52 is in the second position, the movable reflector 52 is away from the first lens group 10, and the reflecting surface is parallel to the lens plane of the first lens group 10. Furthermore, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise about the right end as the axis.

[0221] FIG12 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application in a first imaging mode. FIG13 is a schematic diagram of the structure of the camera module 100 shown in FIG12 in a second imaging mode. As shown in FIG12 and FIG13, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable transflective mirror 53.

[0222] Specifically, as shown in Figures 12 and 13, 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. The first reflector 51 can be a fixed reflector configured to reflect the second light toward 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.

[0223] When the controllable transflective mirror 53 is controlled to enter the reflection mode as shown in Figure 12, 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 transmission mode as shown in Figure 13, the second light passes through the controllable transflective mirror 53 and enters the third lens group 30, while the first light passes through the controllable transflective mirror 53 and enters an area outside the third lens group 30. That is, the first light cannot reach the third lens group 30. At this time, 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 switching the controllable transflective mirror 53 between the reflection mode and the transmission mode, the effective focal length of the optical lens 110 can be changed, thereby achieving an optical zoom function.

[0224] When the controllable transflective mirror 53 is controlled to enter the reflection mode as shown in FIG12 , the optical lens 110 operates in the first imaging mode. The first light from the first lens group 10 is reflected by the controllable transflective mirror 53 to the third lens group 30, and then 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 transflective mirror 53 (reflected in 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.

[0225] When the controllable transflective mirror 53 is controlled to enter the transmission mode as shown in FIG13 , the optical lens 110 operates in the second imaging mode. The second light is transmitted through the controllable transflective mirror 53 and enters the third lens group 30. It then passes through the fourth lens group 40 and the second reflector 60 and enters the image sensor 120. The first light, on the other hand, is transmitted through the controllable transflective mirror 53 and enters an area outside the third lens group 30, for example, other areas inside the electronic device 1000, and is absorbed or consumed.

[0226] In some examples, the controllable transflective mirror 53 can be switched between a reflective mode and a transmissive mode by varying the current or voltage applied to the controllable transflective mirror 53. Alternatively, the mode of the controllable transflective mirror 53 can be controlled by cycling the power. For example, when no electrical signal is present, the controllable transflective mirror 53 is in a reflective mode. That is, when no power is applied, the controllable transflective mirror 53 is in a reflective mode. When an electrical signal is applied, the controllable transflective mirror 53 is in a transmissive mode. That is, when power is applied, the controllable transflective mirror 53 is in a transmissive mode. The electrical signal here can be a current signal or a voltage signal.

[0227] For example, the controllable transflective mirror 53 may include an electrically controllable liquid crystal material layer.

[0228] 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. FIG14 is a schematic structural diagram of the prism 61 provided in the embodiment of the present application. As shown in FIG12-14, the camera module 100 provided in the embodiment of the present application includes a rear lens group (i.e., the third lens group 30 and the fourth lens group 40), a prism 61, and an image sensor 120.

[0229] 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 reflective surface 611, and a second reflective surface 612. The prism 61 is configured such that light from the rear lens group (e.g., 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. 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.

[0230] According to the camera module 100 provided in the embodiment of the present application, light from the rear lens group, after entering the prism 61, can be reflected twice by the first reflective surface 611 and the second reflective surface 612, 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 generally 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 shake 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 shake 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 conducive to reducing the volume of the camera module 100, thereby bringing convenience to the lightweight design of the electronic device 1000.

[0231] In the embodiment of the present application, the first reflective surface 611 not only reflects light but also allows the light to be transmitted from the first reflective surface 611 to the image sensor 120. Specifically, after light enters the interior of the prism 61 through the incident surface 613, it first strikes the first reflective surface 611 at an angle greater than the critical angle, undergoes total internal reflection (TIR) ​​on the first reflective surface 611, and is reflected to the second reflective surface 612. The light then continues to reflect on the second reflective surface 612 and is deflected back to the first reflective surface 611. Due to the deflection effect of the second reflective surface 612, the incident angle of the light from the second reflective surface 612 is smaller than the critical angle, so that the light can be transmitted from the first reflective surface to the image sensor 120 without undergoing total internal reflection again.

[0232] In the embodiment of the present application, the photosensitive surface 122 is tilted relative to the third optical axis OA3, meaning 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, where 15°≤θ<45°. For example, the value of θ can be 20°, 25°, 27.5°, 30°, 35°, or 40°.

[0233] The above arrangement allows the image sensor 120 to be tilted as much as possible, thus minimizing thickness and space. Furthermore, it also allows for the angular requirements of optical design to be met. For example, this facilitates total internal reflection of light on the first reflective surface, allowing light to exit the first reflective surface 611 at a perpendicular angle and enter the photosensitive surface 122 at a perpendicular angle. This angular selection also reduces the difficulty of optical design and improves imaging quality.

[0234] 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.

[0235] 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.

[0236] In some examples, a reflective film layer may be coated on the second reflective surface 612 , and the reflective film layer may be 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 .

[0237] 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°.

[0238] Because the second reflective surface 612 is parallel to the third optical axis OA3, 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 will be emitted from the first reflective surface 611 at a nearly perpendicular 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 reflective surface 611. The above arrangement ensures that the light is emitted from the first reflective surface 611 at a perpendicular or near-perpendicular angle. In this case, the light only needs to be parallel to the photosensitive surface 122 to ensure that the emitted light enters the photosensitive surface 122 at a perpendicular or near-perpendicular angle, which helps reduce the difficulty of optical design.

[0239] In some examples, α=2β, and the angle between the second reflective surface 612 and the incident surface 613 is γ, where γ 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°.

[0240] The structures or configurations of the prism 61 and image sensor 120 provided in the embodiments of the present application can also be used in conventional periscope camera modules. Figure 15 is a schematic diagram of the structure of another camera module 100 provided in the embodiments of the present application. As shown in Figure 15, 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 pass through the prism 61 to enter the tilted image sensor 120.

[0241] 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.

[0242] In some examples, a front lens group may be further provided on the object side of the third reflector 63 , such as the first lens group 10 in FIG. 15 . In this case, light is first converged by the first lens group 10 and then enters the third reflector 63 .

[0243] In some examples, as shown in FIG15 , in order to reduce the volume of the prism, 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 without affecting the optical imaging. 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.

[0244] In some examples, as shown in Figures 12 and 13, the rear lens group includes a third lens group 30 and a fourth lens group 40 arranged in sequence along a 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 that is movable along the third optical axis OA3. For example, the third lens group 30 is a focus lens group, while the fourth lens group 40 is a fixed lens group.

[0245] 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), 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.

[0246] FIG16 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG16 is a schematic structural diagram of the camera module 100 in the second imaging mode, and portion (b) of FIG16 is a schematic structural diagram of the camera module 100 in the first imaging mode. The camera module 100 provided in an embodiment of the present application can be regarded as a more specific and lower-level implementation of the camera module 100 shown in FIG2 , and FIG5 and FIG6 . For ease of understanding, the rear lens group, second reflector 60, and image sensor 120 on the image side of the movable reflector 52 (light guide module 50) in the aforementioned embodiment are not shown in FIG16 . The structural details of the optical lens 110 will be further introduced in conjunction with FIG16 .

[0247] As shown in FIG16 , in the embodiment of the present application, the light guide module 50 includes a movable reflector 52. Alternatively, the movable reflector 52 is the aforementioned light guide module 50. The movable reflector 52 may be a prism (e.g., a right-angle prism). The movable reflector 52 can be switched in position under the drive of a driver 90. The driver 90 may be, for example, a voice coil motor, a piezoelectric motor, an electric motor, or a cylinder, among other power components.

[0248] The movable reflector 52 is located between the front lens group and the rear lens group (not shown in the figure) and is capable of moving (e.g., translating) between a first position and a second position. When the movable reflector 52 is located in the first position shown in part (b) of Figure 16 , 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. When the movable reflector 52 is located in the second position shown in part (a) of Figure 16 , 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 position switching of the movable reflector 52 between the first position and the second position, the effective focal length of the optical lens 110 can be changed, thereby realizing the optical zoom function.

[0249] 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 mounted 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. Under the drive of the driving member 90, it can slide on the slide bar or the slide groove, thereby ensuring that the movable reflector 52 can quickly (for example, within 30 milliseconds) and stably achieve position switching. Exemplarily, a U-shaped or V-shaped slide groove is provided at the bottom of the mounting seat 91, and the slide groove is sleeved on the slide bar. The movable reflector 52 is fixedly mounted 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 sliding groove and the slide bar that slide together.

[0250] In an embodiment of the present application, the optical lens 110 further includes a light shielding member, which is any component capable of achieving a light shielding effect, and the light shielding member can be constructed into any shape. For example, the light shielding member can be the light shielding plate 80 in Figure 16, or can also be a component such as a blackout curtain. The light shielding 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 light shielding 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 light shielding member blocks the second light to prevent the second light from entering the movable reflector 52.

[0251] Through the above arrangement, the optical lens 110 does not introduce the second light when imaging through the first light (i.e., operating in the first imaging mode), which can effectively avoid the interference of the second light on the imaging. The optical lens 110 does not introduce the first light when imaging through the second light (i.e., operating 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 120 at the same time, resulting in the formation of 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.

[0252] In some examples, the light shielding 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. At this time, the light shielding member blocks the first light, thereby preventing 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 light shielding member does not or does not need to block the second light. The embodiment shown in FIG19 below will further illustrate this situation.

[0253] In some examples, the light shielding member may only block 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 blocks 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 does not or does not need to block the first light.

[0254] In some examples, the light shielding 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 light shielding member blocks the first light, thereby preventing the first light from entering the movable reflector 52. Furthermore, when the movable reflector 52 is moved to the first position, the movable reflector 52 reflects the first light, and the light shielding member blocks the second light, thereby preventing the second light from entering the movable reflector 52.

[0255] As shown in FIG16 , in an embodiment of the present application, the shading member includes a position-variable shading plate 80 , which can be switched between a third position and a fourth position, such as by translation, to achieve shielding of the first light or the second light.

[0256] As shown in part (a) of FIG16 , when the movable reflector 52 is moved to the second position, the optical lens 110 operates 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 block the first light, ensuring that the first light cannot enter the movable reflector 52. This prevents stray light from entering the image sensor 120, thereby improving the imaging quality of the optical lens 110.

[0257] As shown in part (b) of FIG16 , when the movable reflector 52 is moved to the first position, the optical lens 110 operates 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 block the second light, ensuring that the second light cannot enter the movable reflector 52. This prevents stray light from entering the image sensor 120, thereby improving the imaging quality of the optical lens 110.

[0258] The embodiment of the present application achieves shielding of the first or second light beams by providing a positionally variable light shielding plate 80, enabling precise control of the light path and ensuring a good shielding effect. Furthermore, the implementation method is simple and easy to implement, which helps save lens space and implementation costs. Furthermore, the operation stability is high, which helps improve the reliability of the optical lens 110.

[0259] As shown in FIG16 , the third position is located on the image side of first lens group 10. When light shielding plate 80 is in the third position, the surface of light shielding plate 80 faces first lens group 10, achieving a better light shielding effect. The fourth position is located on the image side of second lens group 20. When light shielding plate 80 is in the fourth position, the surface of light shielding plate 80 faces second lens group 20, achieving a better light shielding effect. In other examples, the third position may also be located on the object side of first lens group 10, and the fourth position may be located on the object side of second lens group 20.

[0260] 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 this application.

[0261] In some examples, the light shielding plate 80 and the movable reflector 52 may also be driven by two different driving components.

[0262] In some examples, the light shielding 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 .

[0263] Through the above settings, the same driving component can be reused to realize the position switching of the light shielding plate 80 and the movable reflector 52, that is, there is no need to set up additional driving components to drive the light shielding plate 80, which is beneficial to saving lens space and implementation costs, and the synchronous drive 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 pace.

[0264] In some examples, the driving member 90 is simultaneously driven and connected to the sunshade 80 and the movable reflector 52. The driving member 90 can achieve synchronous driving of the sunshade 80 and the movable reflector 52 through mechanisms such as belts, rope pulleys, rollers, connecting rods, and gear rack mechanisms.

[0265] Figure 17 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application, wherein part (a) of Figure 17 is a schematic diagram of the structure of the camera module 100 in the second imaging mode, and part (b) of Figure 17 is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Figure 18 is a schematic diagram of the structure of a light shielding plate 80 provided in an embodiment of the present application.

[0266] As shown in Figures 17 and 18 , compared to the embodiment shown in Figure 16 , in this embodiment, the light shielding plate 80 is fixedly connected to the movable reflector 52, meaning that the positions of the light shielding plate 80 and the movable reflector 52 are relatively fixed. For example, the light shielding plate 80 is fixedly mounted on a mounting base 91, and the light shielding plate 80 is fixedly connected to the movable reflector 52 via the mounting base 91. In this case, the driving member 90 can drive the light shielding plate 80 and the movable reflector 52 to move synchronously via the mounting base 91. The light shielding plate 80 has a light leakage area 81, which corresponds to the position of the movable reflector 52 and allows light to pass through and enter the movable reflector 52. The light leakage area 81 can be a through hole, or it can be a notch structure located at the edge of the light shielding plate 80.

[0267] As shown in part (a) of Figure 17, when the movable reflector 52 is moved to the second position, the light shielding plate 80 is synchronously moved to the third position. At this time, the light leakage area 81 on the light shielding 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, while the non-light leakage area of ​​the light shielding plate 80 (i.e., the area to the right of the light leakage area 81) blocks the first light.

[0268] As shown in part (b) of Figure 17, when the movable reflector 52 is moved to the first position, the light shielding plate 80 is synchronously moved to the fourth position. At this time, the light leakage area 81 on the light shielding 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 the other non-light leakage areas of the light shielding plate 80 (i.e., the area to the left of the light leakage area 81) block the second light.

[0269] The embodiment of the present application fixes the light shielding plate 80 to the movable reflector 52, which facilitates the synchronous driving of the above two components by the same driving member (e.g., driving member 90), can save lens space and implementation costs, facilitate rapid response to user switching operations, and shorten the time required for switching. By providing a light leakage area 81 on the light shielding 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. In addition, due to the presence of the light leakage area 81, the light shielding plate 80 can be set between the front lens group and the movable reflector 52, and the light shielding plate 80 can be moved from one side of the movable reflector 52 to the other side, facilitating the fixed connection between the light shielding plate 80 and the movable reflector 52, thereby simplifying the connection structure between the two. For example, in this case, the light shielding plate 80 can be fixedly set on the mounting seat 91 of the movable reflector 52, thereby achieving a fixed connection between the two.

[0270] In some examples, the light leakage area 81 can be a through-hole structure, or a notch structure provided at the edge of the light shielding plate 80. As shown in FIG18 , the light shielding plate 80 is a rectangular structure, and the light leakage area 81 is a through-hole structure located in the middle of the light shielding plate 80. The shape of the light leakage area 81 can be rectangular, circular, elliptical or any other shape. In an embodiment of the present application, the movable reflector 52 is a prism, and the light shielding 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 directly 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.

[0271] Figure 19 is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application, wherein part (a) in Figure 19 is a structural schematic diagram of the camera module 100 in the second imaging mode, and part (b) in Figure 19 is a structural schematic diagram of the camera module 100 in the first imaging mode. Figure 20 is a structural schematic diagram of another light shielding plate 80 provided in an embodiment of the present application. As shown in Figures 19 and 20, relative to the embodiments shown in Figures 17 and 18 above, 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 achieve shielding of the first light, but cannot shield the second light.

[0272] As shown in part (a) of Figure 19, when the movable reflector 52 is moved to the second position, the light shielding plate 80 is synchronously moved to the third position. At this time, the light leakage area 81 on the light shielding 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, while the non-light leakage area of ​​the light shielding plate 80 (i.e., the area to the right of the light leakage area 81) blocks the first light.

[0273] As shown in part (b) of Figure 19, when the movable reflector 52 is moved to the first position, the light shielding plate 80 is synchronously moved to the fourth position. At this time, the light leakage area 81 on the light shielding 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 light shielding plate 80 and the second lens group 20 are staggered with each other at this time, the second light cannot be blocked.

[0274] Considering the complex internal structure of the lens, not all front lens groups may have light blocking requirements. For example, in the first imaging mode shown in part (b) of Figure 19, since the light incident from the second lens group 20 is located on 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 design an additional shielding for the second light. In the second imaging mode shown in part (a) of Figure 19, 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 enter the reflective surface of the movable reflector 52 due to diffuse reflection, so a shielding design is required for the first light. Therefore, in this embodiment, the light shielding plate 80 is only used to block the first light, without blocking the second light. This can shorten the overall length of the light shielding plate 80, which is conducive to the miniaturization of the camera module 100.

[0275] Figure 21 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. Part (a) of Figure 21 is a schematic diagram of the structure of the camera module 100 in the second imaging mode, and part (b) of Figure 21 is a schematic diagram of the structure of the camera module 100 in the first imaging mode. In this embodiment of the present application, different areas of the light shielding plate 80 have a light-transmitting mode and a light-blocking mode, and can switch between these two modes.

[0276] As shown in part (a) of FIG. 21 , when the movable reflector 52 is moved to the second position, the light shielding plate 80 corresponding to the second region of the second lens group 20 switches to a light-transmitting mode, allowing the second light to pass through the second region toward the movable reflector 52. The light shielding plate 80 corresponding to the first region of the first lens group 10 switches to a light-blocking mode to block the first light. This prevents the first light from entering the image sensor 120 as stray light, thereby improving the imaging quality of the optical lens 110.

[0277] As shown in part (b) of FIG. 21 , when the movable reflector 52 is moved to the first position, the light shielding plate 80 corresponding to the first region of the first lens group 10 switches to a light-transmitting mode, allowing the first light to pass through the first region toward the movable reflector 52. The light shielding plate 80 switches to a light-blocking mode corresponding to the second region of the second lens group 20, thereby blocking the second light. This prevents the second light from entering the image sensor 120 as stray light, thereby improving the imaging quality of the optical lens 110.

[0278] 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 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.

[0279] In some examples, the area can be switched between the light-transmitting mode and the light-blocking mode by changing the current or voltage applied to different areas of the light-shielding plate 80, or the mode 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.

[0280] Illustratively, 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.

[0281] 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.

[0282] FIG22 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG22 is a schematic structural diagram of the camera module 100 in a first imaging mode, portion (b) of FIG22 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at infinity, and portion (c) of FIG22 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at macro. The structural details of the optical lens 110 will be further described below in conjunction with FIG22.

[0283] As shown in FIG22 , in the embodiment of the present application, the light guide module 50 includes a movable reflector 52. Alternatively, the movable reflector 52 is the aforementioned light guide module 50. The movable reflector 52 may be a prism (e.g., a right-angle prism). The movable reflector 52 may be switched in position by a driver, which may be any power component such as a voice coil motor, a piezoelectric motor, an electric motor, or a cylinder.

[0284] 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. When the movable reflector 52 is located at the first position shown in part (a) of Figure 22, 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 (i.e., the camera module 100) enters the first imaging mode.

[0285] When the movable reflector 52 is in the second position shown in part (b) or part (c) of Figure 22, 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 first lens group 10 and the second lens group 20 have different focal lengths. By controlling the movable reflector 52 to switch between the first and second positions, the effective focal length of the optical lens 110 can be changed, thereby achieving an optical zoom function.

[0286] 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 can be 1.5, 1.8, 2.0, or 3.0.

[0287] As shown in FIG. 22, in an 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.

[0288] In an 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 achieved. In the two imaging modes, the focusing function can be achieved by moving the third lens group 30, and the macro shooting function can be achieved in the second imaging mode.

[0289] As shown in parts (b) and (c) of FIG. 22, when the optical lens 110 is in the second imaging mode, when the optical lens 110 switches from focusing at infinity shown in part (b) of FIG. 22 to focusing on a macro object shown in part (c) of FIG. 22, the third lens group 30 moves toward the object side, and the required moving distance is Lm. As shown in part (b) of FIG. 22 and part (a) of FIG. 22, 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 toward 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.

[0290] By imposing the above constraints on the relevant parameters in an embodiment of the present application, the size (length) of the optical lens 110 and the shooting effect can be taken into account. Through the above constraints, on the one hand, the optical lens 110 can be prevented from being too long, which can free up space for the miniaturization design of the electronic device 1000. On the other hand, not only can the optical lens 110 achieve the functions of telephoto shooting and macro shooting, but also it has a large magnification under macro shooting, making the optical lens having a better imaging effect.

[0291] In some examples, the focal length of second lens group 20 is f2, the focal length of third lens group 30 is f3, and the focal length of fourth lens group 40 is f4, where f2, f3, and f4 satisfy the following: 0.5<(f3-f4) / f2<5. For example, 0.8≤(f3-f4) / f2≤3, and 1.5≤(f3-f4) / f2≤4.0.

[0292] By imposing the aforementioned constraints on the focal lengths of the various lens groups, the present application balances aberrations and chromatic aberrations in the two imaging modes, enabling the optical lens 110 to achieve optimal imaging effects in both imaging modes. Furthermore, the image does not experience sudden changes before and after mode switching (i.e., during zooming), thereby improving the user experience.

[0293] 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, where f3 and EFL1 satisfy: EFL1 / f3>1.1.

[0294] 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, where f3 and EFL2 satisfy: EFL2 / f3>1.0.

[0295] The following presents a possible embodiment of the optical lens 110 shown in FIG. 22 in combination with specific optical data.

[0296] Please refer to Tables 2a, 2b, and 2c. Table 2a lists the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 22. The thickness includes both the thickness of the lens itself and the distance between lenses. Tables 2b and 2c list the aspheric coefficients, R values, and K values ​​of each lens in a possible embodiment of the optical lens 110 shown in Figure 22.

[0297] Table 2a:

[0298] Table 2b:

[0299] Table 2c:

[0300] The aspheric surface of the optical lens 110 in Table 2a can be defined using, but not limited to, the following aspheric curve equation:

[0301] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, which can be found in Table 2b and Table 2c.

[0302] Tables 2d and 2e provide other parameter information for the optical lens 110, including, for example, the focal lengths of the lens groups and lenses shown in Table 2d; the image height IMH, effective focal length EFL, equivalent focal length, aperture factor Fno, total optical length TTL, macro focus distance, macro magnification, and the aforementioned parameters L1 and Lm for the optical lens 110 in the first and second imaging modes shown in Table 2e. Calculations show that f1 / f2 = 1.16 > 1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1) = 5.90, which is within the aforementioned preset range (2 to 15); and (f3-f4) / f2 = 0.89, which is within the aforementioned preset range (0.5 to 5).

[0303] Table 2d:

[0304] Table 2e:

[0305] FIG23 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG23 is a schematic structural diagram of the camera module 100 in a first imaging mode, portion (b) of FIG23 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at infinity, and portion (c) of FIG23 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at macro. The structural details of the optical lens 110 will be further described below in conjunction with FIG23.

[0306] As shown in Figure 23, 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, which are sequentially arranged 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. The third lens group 30 includes a fourth lens 114, a fifth lens 115, and a sixth lens 116, which are sequentially arranged along the third optical axis OA3. The fourth lens group 40 includes a seventh lens 117, an eighth lens 118, and a ninth lens 119, which are sequentially arranged along the third optical axis OA3.

[0307] The following presents a possible embodiment of the optical lens 110 shown in FIG. 23 in combination with specific optical data.

[0308] Please refer to Tables 3a, 3b, and 3c. Table 3a shows the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 23. The thickness includes both the thickness of the lens itself and the distance between lenses. Tables 3b and 3c show the aspheric coefficients, R values, and K values ​​of each lens in a possible embodiment of the optical lens 110 shown in Figure 23.

[0309] Table 3a:

[0310] Table 3b:

[0311] Table 3c:

[0312] The aspheric surface of the optical lens 110 in Table 3a can be defined using, but not limited to, the following aspheric surface curve equation:

[0313] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, which can be found in Table 3b and Table 3c.

[0314] Tables 3d and 3e provide other parameter information for the optical lens 110, including, for example, the focal lengths of the lens groups and lenses shown in Table 3d; the image height IMH, effective focal length EFL, equivalent focal length, aperture factor Fno, total optical length TTL, macro focus distance, macro magnification, and the aforementioned parameters L1 and Lm for the optical lens 110 in the first and second imaging modes shown in Table 3e. Calculations show that f1 / f2 = 1.25 > 1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1) = 5.92, which is within the aforementioned preset range (2 to 15); and (f3-f4) / f2 = 0.93, which is within the aforementioned preset range (0.5 to 5).

[0315] Table 3d:

[0316] Table 3e:

[0317] FIG24 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG24 is a schematic structural diagram of the camera module 100 in a first imaging mode, portion (b) of FIG24 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at infinity, and portion (c) of FIG24 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at macro. The structural details of the optical lens 110 will be further described below in conjunction with FIG24.

[0318] As shown in Figure 24, 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, which are sequentially arranged 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. The third lens group 30 includes a fourth lens 114, a fifth lens 115, and a sixth lens 116, which are sequentially arranged along the third optical axis OA3. The fourth lens group 40 includes a seventh lens 117, an eighth lens 118, and a ninth lens 119, which are sequentially arranged along the third optical axis OA3.

[0319] The following presents a possible embodiment of the optical lens 110 shown in FIG. 24 in combination with specific optical data.

[0320] Please refer to Tables 4a, 4b, and 4c. Table 4a shows the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 24. The thickness includes both the thickness of the lens itself and the distance between lenses. Tables 4b and 4c show the aspheric coefficients, R values, and K values ​​of each lens in a possible embodiment of the optical lens 110 shown in Figure 24.

[0321] Table 4a:

[0322] Table 4b:

[0323] Table 4c:

[0324] The aspheric surface of the optical lens 110 in Table 4a can be defined using, but not limited to, the following aspheric curve equation:

[0325] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; αi is the i-th order aspheric coefficient, which can be found in Table 4b and Table 4c.

[0326] Tables 4d and 4e provide other parameter information for the optical lens 110, including, for example, the focal lengths of the lens groups and lenses shown in Table 4d; the image height IMH, effective focal length EFL, equivalent focal length, aperture factor Fno, total optical length TTL, macro focus distance, macro magnification, and the aforementioned parameters L1 and Lm for the optical lens 110 in the first and second imaging modes shown in Table 4e. Calculations revealed that f1 / f2 = 1.27 > 1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1) = 5.88, which is within the aforementioned preset range (2 to 15); and (f3-f4) / f2 = 0.95, which is within the aforementioned preset range (0.5 to 5).

[0327] Table 4d:

[0328] Table 4e:

[0329] FIG25 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG25 is a schematic structural diagram of the camera module 100 in a first imaging mode, portion (b) of FIG25 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at infinity, and portion (c) of FIG25 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at macro. The structural details of the optical lens 110 will be further described below in conjunction with FIG25 .

[0330] As shown in FIG25 , 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, which are sequentially arranged 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. The third lens group 30 includes a fourth lens 114, a fifth lens 115, and a sixth lens 116, which are sequentially arranged along the third optical axis OA3. The fourth lens group 40 includes a seventh lens 117, an eighth lens 118, and a ninth lens 119, which are sequentially arranged along the third optical axis OA3.

[0331] The following presents a possible embodiment of the optical lens 110 shown in FIG. 25 in combination with specific optical data.

[0332] Please refer to Tables 5a, 5b, and 5c. Table 5a shows the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 25. The thickness includes both the thickness of the lens itself and the distance between lenses. Tables 5b and 5c show the aspheric coefficients, R values, and K values ​​of each lens in a possible embodiment of the optical lens 110 shown in Figure 25.

[0333] Table 5a:

[0334] Table 5b:

[0335] Table 5c:

[0336] The aspheric surface of the optical lens 110 in Table 5a can be defined using, but not limited to, the following aspheric curve equation:

[0337] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, which can be found in Table 5b and Table 5c.

[0338] Tables 5d and 5e provide other parameter information for the optical lens 110, including, for example, the focal lengths of the lens groups and lenses shown in Table 5d; the image height IMH, effective focal length EFL, equivalent focal length, aperture factor Fno, total optical length TTL, macro focus distance, macro magnification, and the aforementioned parameters L1 and Lm for the optical lens 110 in the first and second imaging modes shown in Table 5e. Calculations show that f1 / f2 = 1.27 > 1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1) = 5.99, which is within the aforementioned preset range (2 to 15); and (f3-f4) / f2 = 0.98, which is within the aforementioned preset range (0.5 to 5).

[0339] Table 5d:

[0340] Table 5e:

[0341] FIG26 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG26 is a schematic structural diagram of the camera module 100 in a first imaging mode, portion (b) of FIG26 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at infinity, and portion (c) of FIG26 is a schematic structural diagram of the camera module 100 in a second imaging mode and focused at macro. The structural details of the optical lens 110 will be further described below in conjunction with FIG26 .

[0342] As shown in FIG26 , 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, which are sequentially arranged 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. The third lens group 30 includes a fourth lens 114, a fifth lens 115, and a sixth lens 116, which are sequentially arranged along the third optical axis OA3. The fourth lens group 40 includes a seventh lens 117, an eighth lens 118, and a ninth lens 119, which are sequentially arranged along the third optical axis OA3.

[0343] The following presents a possible embodiment of the optical lens 110 shown in FIG. 26 in combination with specific optical data.

[0344] Please refer to Tables 6a, 6b, and 6c. Table 6a shows the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in a possible embodiment of the optical lens 110 shown in Figure 26. The thickness includes both the thickness of the lens itself and the distance between lenses. Tables 6b and 6c show the aspheric coefficients, R values, and K values ​​of each lens in a possible embodiment of the optical lens 110 shown in Figure 26.

[0345] Table 6a:

[0346] Table 6b:

[0347] Table 6c:

[0348] The aspheric surface of the optical lens 110 in Table 6a can be defined using, but not limited to, the following aspheric surface curve equation:

[0349] Where z is the relative distance between a point on the aspheric surface and the intersection of the point r from the optical axis; r is the vertical distance between the point on the aspheric curve and the optical axis; c is the curvature; k is the cone coefficient; α i is the i-th order aspheric coefficient, which can be found in Table 6b and Table 6c.

[0350] Tables 6d and 6e provide other parameter information for the optical lens 110, including, for example, the focal lengths of the lens groups and lenses shown in Table 6d; the image height IMH, effective focal length EFL, equivalent focal length, aperture factor Fno, total optical length TTL, macro focus distance, macro magnification, and the aforementioned parameters L1 and Lm for the optical lens 110 in the first and second imaging modes shown in Table 6e. Calculations show that f1 / f2 = 1.59 > 1 (i.e., the aforementioned preset threshold); f3 / (Lm+L1) = 5.31, which is within the aforementioned preset range (2 to 15); and (f3-f4) / f2 = 1.01, which is within the aforementioned preset range (0.5 to 5).

[0351] Table 6d:

[0352] Table 6e:

[0353] FIG27 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application in a first imaging mode. FIG28 is a schematic diagram of the structure of the camera module 100 shown in FIG27 in a second imaging mode. The embodiments shown in FIG27 and FIG28 can be obtained by combining some features of the embodiments shown in FIG5, FIG15, and FIG16, etc., and the structural details of the camera module 100 will be further described below in conjunction with FIG27 and FIG28.

[0354] As shown in Figures 27 and 28, in the embodiment of the present application, the light guide module 50 includes a movable reflector 52. In other words, the movable reflector 52 is the aforementioned light guide module 50. The movable reflector 52 can be a prism (e.g., a right-angle prism) or a reflector. The movable reflector 52 can be switched in position under the drive of a driver.

[0355] The movable reflector 52 is located between the front lens group and the rear lens group and is capable of moving (e.g., translating) between a first position and a second position. When the movable reflector 52 is located in the first position shown in FIG27 , 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. When the movable reflector 52 is located in the second position shown in FIG28 , 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 position switching of the movable reflector 52 between the first position and the second position, the effective focal length of the optical lens 110 can be changed, thereby realizing the optical zoom function.

[0356] In the embodiment of the present application, the optical lens 110 further includes a light shielding member, which can be, for example, a light shielding plate 80 in Figures 27 and 28. The light shielding plate 80 can be switched between a third position and a fourth position, for example, by translation, to thereby block the first light or the second light.

[0357] As shown in FIG28 , when the movable reflector 52 is moved to the second position, the optical lens 110 operates in the second imaging mode. 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 block the first light, ensuring that the first light cannot enter the movable reflector 52. This prevents stray light from entering the image sensor 120, thereby improving the imaging quality of the optical lens 110.

[0358] As shown in FIG27 , when the movable reflector 52 is moved to the first position, the optical lens 110 operates 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 block the second light, ensuring that the second light cannot enter the movable reflector 52. This can prevent stray light from entering the image sensor 120, and can improve the imaging quality of the optical lens 110.

[0359] As shown in Figures 27 and 28, 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 back and forth 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.

[0360] In the embodiment of the present application, in conjunction with Figures 13 to 15 above, 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. Light from the third lens group 30 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 before being 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 is tilted relative to the third optical axis OA3. The image sensor 120 is also used for jitter compensation to achieve optical image stabilization.

[0361] In some examples, the movable reflector 52 is also used to perform shake compensation to achieve optical image stabilization. The shake compensation of the movable reflector 52 is combined with the shake compensation of the image sensor 120, thereby achieving a better shake compensation effect.

[0362] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection 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) 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 movable along the optical axis.

2. The optical lens according to claim 1, wherein: The focal length of the third lens group (30) is f3. 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. 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 the following: 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), and the second reflector (60) is used to deflect light from the fourth lens group (40).

7. The optical lens according to claim 6, wherein: The second reflector (60) includes a prism (61), wherein the prism (61) has an incident surface (613), a first reflective surface (611), and a second reflective surface (612). 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 before being 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, wherein: 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, wherein: The light guide module (50) comprises: The movable reflector (52) is movable 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, wherein: The light guide module (50) further includes: The first reflecting element (51) is located between the second lens group (20) and the movable reflecting element (52), and is used to reflect the second light to the movable reflecting element (52).

11. The optical lens according to claim 10, wherein: 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; 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.

12. The optical lens according to any one of claims 1 to 8, wherein: 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) 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 transflective mirror (53) is located between the first reflector (51) and the rear lens group. The controllable transflective mirror (53) has a transmission mode and a reflection mode. When in the reflection mode, the controllable transflective 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 transflective 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 includes a light shielding member, which is configured as follows: When the movable reflector (52) is moved to the second position, the light shielding member shields 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, wherein: The shading member comprises a shading plate (80) with a variable position. 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, wherein: 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, wherein: The light shielding plate (80) is fixedly connected to the movable reflector (52), and the light shielding 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, wherein: The shading member includes a shading plate (80) with a variable mode. When the movable reflector (52) is moved to the second position, the light shielding 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 light shielding plate (80) is switched to a light-shielding mode corresponding to the first area of the first lens group (10) to block 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-blocking mode to block the second light.

19. A camera module, characterized in that: The invention comprises an image sensor (120) and an optical lens according to 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, wherein: 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), then sequentially reflected by the first reflecting surface (611) and the second reflecting surface (612), and then 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.

Images