Optical lens, camera module and electronic device

Abstract

The present invention relates to the technical field of optical imaging, and disclosed are an optical lens (110), a camera module (100), and an electronic device (1000). The optical lens (110) comprises a first lens group (10), a second lens group (20), and a light guide module (50), wherein in a first imaging mode of the optical lens (110), the light guide module (50) is configured to reflect first light from the first lens group (10) to an image sensor (120), and in a second imaging mode of the optical lens (110), the light guide module (50) is configured to reflect second light from the second lens group (20) to the image sensor (120), the optical lens (110) has different effective focal lengths in the first imaging mode and the second imaging mode, and the light guide module (50) is further configured for jitter compensation to achieve optical image stabilization. The optical lens (110) achieves optical image stabilization while performing optical zoom, and offers good image quality and high image resolution, thereby improving the use experience of a user.

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 202410178225.X 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 quality 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. Related technologies provide an optical lens with optical zoom capability, comprising multiple front lens groups and an optical path switching element. The front lens groups have different focal lengths and are arranged side by side on the object side of the optical path switching element. The optical path switching element is capable of imaging light from any of the multiple front lens groups onto an image sensor. The optical zoom function of the optical lens is achieved by switching the optical path switching element among the multiple lens groups.

[0004] When users use the camera module of an electronic device to take photos or videos, the captured images are prone to blurring due to hand tremors, shaking of the photographed object, or limitations of the optical environment. Optical image stabilization (OIS) technology can effectively solve this problem. For optical lenses with optical zoom functions, how to implement OIS to further improve shooting quality remains to be solved.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide an optical lens, a camera module and an electronic device. The optical lens can achieve optical zoom while also achieving optical image stabilization, has good imaging quality and high imaging clarity, and can improve the user experience.

[0007] In a first aspect, an optical lens is provided, comprising: a first lens group, a second lens group, and a light guide module, the optical lens comprising a first imaging mode and a second imaging mode, wherein the first lens group and the second lens group are arranged on the object side of the light guide module; when the optical lens is in the first imaging mode, the light guide module is used to reflect a first light from the first lens group to an image sensor, and when the optical lens is in the second imaging mode, the light guide module is used to reflect a second light from the second lens group to the image sensor, and the optical lens has different effective focal lengths in the first imaging mode and in the second imaging mode; the light guide module is also used to perform jitter compensation to achieve optical image stabilization.

[0008] The optical lens provided in the embodiment of the present application includes a first lens group, a second lens group and a light guide module, wherein the first lens group and the second lens group are arranged in parallel on the object side of the light guide module as front lens groups, and the light guide module can reflect light from the first lens group or the second lens group to the image sensor, 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 the second imaging mode, that is, the optical lens has different effective focal lengths when the image sensor receives light from different front lens groups, thereby enabling the optical lens to have optical zoom capability, and the optical lens can use different focal lengths (that is, use different front lens groups, or enter different imaging modes) for shooting in different shooting scenes, so that higher quality images can be obtained, the optical lens has better scene adaptability, and the user's shooting experience is greatly improved.

[0009] In addition, the light guide module is movably configured in the lens, and can be moved (for example, rotated or translated) under the drive of the anti-shake motor to perform shake compensation, thereby realizing optical image stabilization. Since the light guide module can selectively reflect the light of the first lens group or the second lens group to the image sensor, the optical lens can realize optical image stabilization through the 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, the light guide module can be used to realize optical image stabilization, which can improve the shooting quality of the optical lens in different usage scenarios. The optical lens provided in the embodiment of the present application can realize optical zoom while also realizing optical image stabilization, has good imaging quality, high imaging clarity, and improves the user experience.

[0010] 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.

[0011] 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.

[0012] In a possible implementation, the optical lens further includes: a rear lens group located on the image side of the light guide module, configured to process the light from the light guide module and emit the processed light to the image sensor.

[0013] The present application further provides a rear lens group on the object side of the light guide module. The rear lens group may include one or more lenses to improve the imaging specifications of the optical lens and enhance the imaging quality.

[0014] In a possible implementation, the rear lens group includes a third lens group and a fourth lens group arranged sequentially 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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 configured to reflect light from the fourth lens group to the image sensor.

[0020] In this embodiment, an additional reflector is provided at the rear end of the optical path to deflect the propagation angle of the light, thereby flexibly adjusting the placement of the image sensor to achieve better space utilization. The light is then deflected a total of 180 degrees, allowing the plane of the image sensor to be parallel to the display of the electronic device. This frees the placement of the image sensor from the thickness of the electronic device, allowing for a larger image sensor to be installed, thereby improving imaging quality. For example, the second reflector can be a mirror or a prism.

[0021] 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.

[0022] 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.

[0023] In a possible implementation, the focal lengths of the first lens group and the second lens group are different.

[0024] 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.

[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 image sensor; when located at the second position, the movable reflector is used to reflect the second light to the image sensor; the movable reflector is also used to perform jitter compensation to achieve optical image stabilization.

[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] 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 image sensor; 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 image sensor and blocks the second light, and when located at the second position, the movable reflector avoids the second light; the first reflector and the movable reflector are also used to perform jitter compensation to achieve optical image stabilization.

[0028] 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 image sensor; the controllable transflective mirror is located between the first reflector and the image sensor, 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 image sensor and blocks the second light. When in the transmission mode, the second light passes through the controllable transflective mirror and is emitted toward the image sensor; the first reflector and the controllable transflective mirror are also used to perform jitter compensation to achieve optical image stabilization.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

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

[0036] 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.

[0037] 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.

[0038] 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.

[0039] In one possible implementation, the shading element includes a shading plate with a variable mode. When the movable reflector is moved to the second position, the second area of ​​the shading plate corresponding to the second lens group 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.

[0040] 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.

[0041] 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.

[0042] In a third aspect, a camera module is provided, comprising: a rear lens group, a prism and an image sensor, wherein the rear lens group has a third optical axis; the prism has an incident surface, a first reflection surface and a second reflection surface, and the prism is configured such that: light from the rear lens group is incident on the interior of the prism through the incident surface, and then is reflected by the first reflection surface and the second reflection surface in sequence, and then is emitted from the first reflection surface to the image sensor; the photosensitive surface of the image sensor faces the first reflection surface, and the photosensitive surface is tilted relative to the third optical axis, and the image sensor is also used for jitter compensation to achieve optical image stabilization.

[0043] 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.

[0044] 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°.

[0045] 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.

[0046] 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°.

[0047] 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.

[0048] In a possible implementation, α=55°, β=27.5° or α=60°, β=30°.

[0049] In one possible implementation, the camera module further includes: a first lens group, a second lens group and a light guide module, and the camera module includes 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 camera module 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 camera module 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 camera module has a different effective focal length in the first imaging mode and in the second imaging mode.

[0050] In one possible implementation, the camera module further includes: a third reflector located on the object side of the rear lens group, for reflecting light toward the rear lens group. In other words, the camera module can also be a conventional periscope camera module.

[0051] In a possible implementation, the rear lens group includes a third lens group and a fourth lens group arranged in sequence along the third optical axis, and at least one lens group among the third lens group and the fourth lens group is a focusing lens group movable along the third optical axis.

[0052] 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.

[0053] In one possible implementation, the rear lens group may include three, four, five, or more lens groups sequentially arranged along the third optical axis, at least one of which is a focus lens group, while the remaining lens groups are fixed lens groups. For example, the rear lens group may include a sixth lens group, a third lens group, and a fourth lens group sequentially arranged along the third optical axis, wherein the sixth lens group and the fourth lens group are fixed lens groups, and the third lens group located in the middle is a movable focus lens group.

[0054] In a fourth aspect, an electronic device is provided, which includes a camera module provided by any possible implementation method of the second aspect or the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

[0056] FIG2 is a schematic structural diagram of a camera module provided in an embodiment of the present application.

[0057] FIG3 is a control principle diagram of optical image stabilization performed by an electronic device provided in an embodiment of the present application.

[0058] FIG4 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0059] FIG5 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0060] FIG6 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0061] FIG7 is a schematic structural diagram of the camera module shown in FIG6 in the second imaging mode.

[0062] FIG8 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0063] FIG9 is a schematic structural diagram of the camera module shown in FIG8 in the second imaging mode.

[0064] FIG10 is a schematic structural diagram of a prism provided in an embodiment of the present application.

[0065] FIG11 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0066] FIG12 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0067] FIG13 is a schematic structural diagram of the camera module shown in FIG12 in the second imaging mode.

[0068] FIG14 is a structural diagram of another camera module provided in an embodiment of the present application in a first imaging mode.

[0069] FIG15 is a schematic structural diagram of the camera module shown in FIG14 in the second imaging mode.

[0070] FIG16 is a structural diagram of another example of the camera module shown in FIG14 in the second imaging mode.

[0071] Figure 17 is a structural schematic diagram of another camera module provided in an embodiment of the present application in the first imaging mode.

[0072] FIG18 is a schematic structural diagram of the camera module shown in FIG17 in the second imaging mode.

[0073] FIG19 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0074] Figure 20 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0075] FIG21 is a schematic structural diagram of a sunshade provided in an embodiment of the present application.

[0076] Figure 22 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0077] FIG23 is a schematic structural diagram of another sunshade provided in an embodiment of the present application.

[0078] Figure 24 is a structural schematic diagram of another camera module provided in an embodiment of the present application.

[0079] Reference numerals:

[0080] 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;

[0081] 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; 120, image sensor; 121, aperture stop; 122, photosensitive surface; 130, filter; 140, first light-transmitting lens; 150, second light-transmitting lens; 160, anti-shake motor; 161, drive unit;

[0082] 200, back cover; 300, display screen; 400, middle frame; 500, posture sensor; 600, processing unit; 1000, electronic equipment;

[0083] OA1, first optical axis; OA2, second optical axis; OA3, third optical axis. DETAILED DESCRIPTION

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] For ease of understanding, the technical terms involved in this application are explained and described below.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] Effective focal length (EFL): The distance from the principal plane of an optical system to the corresponding focus.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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).

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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."

[0104] 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.

[0105] 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.

[0106] Image height (ImgH): refers to the total image height of the image formed by the lens.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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 .

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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 .

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] For example, the filter 130 may be realized by evaporating an infrared (IR) material coating on a blue crystal substrate.

[0123] Exemplarily, the filter 130 may be a white glass filter or a blue glass filter.

[0124] The embodiment of the present application mainly relates to the structural improvement of the optical lens 110. The structural details of the optical lens 110 are introduced below with reference to the accompanying drawings. As shown in FIG2 , the optical lens 110 includes a plurality of front lens groups and a light guide module 50.

[0125] 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.

[0126] 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.

[0127] 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 between the light guide module 50 and the image sensor 120 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 connect one of the multiple upstream optical paths with the downstream optical path 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 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 image sensor 120, and prevent the light from the remaining front lens groups from being transmitted to the image sensor 120.

[0128] Under the switching action of the light guide module 50, the optical lens 110 can project light from different front lens groups to the image sensor 120, that is, the optical lens 110 can form images through different front lens groups, and the optical lens 110 has different effective focal lengths when forming images through different front lens groups, that is, when the image sensor 120 receives light from different front lens groups, the optical lens 110 has different effective focal lengths, thereby enabling the optical lens 110 to have the ability of optical zoom.

[0129] 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 image sensor 120 and prevent the second light from the second lens group 20 from being transmitted to the image sensor 120. At this time, the optical lens 110 forms an image through the first lens group 10 (the first light), and the optical lens 110 enters the first imaging mode. At this time, the effective focal length of the optical lens 110 is EFL1. In addition, the light guide module 50 can also transmit the second light from the second lens group 20 to the image sensor 120 and prevent the first light from the first lens group 10 from being transmitted to the image sensor 120. At this time, the optical lens 110 can form an image through the second lens group 20 (the second light), and the optical lens 110 enters the second imaging mode. At this time, the effective focal length of the optical lens 110 is EFL2. Since the effective focal length EFL1 is different from the effective focal length EFL2 , the optical lens 110 can operate at different effective focal lengths, that is, the optical lens 110 can operate in different imaging modes, so that the optical lens 110 has an optical zoom capability.

[0130] In the embodiment of the present application, the light guide module 50 is also used for shake compensation to achieve optical image stabilization. The light guide module 50 can rotate or move under the drive of an anti-shake motor (not shown in the figure), thereby achieving optical image stabilization and improving the shooting quality of the optical lens 110.

[0131] Specifically, when the electronic device's gyroscope detects device vibration, the camera module 100's anti-shake motor can move the light guide module 50 in the opposite direction (e.g., by translation or rotation) to compensate for the blurring caused by vibration during exposure. The anti-shake motor moves the light guide module 50, ensuring that light that was intended to enter a specific imaging point does not deviate and enter other locations, thereby ensuring photo quality and improving the user's photography experience.

[0132] In some examples, the light guide module 50 performs shake compensation to achieve optical image stabilization. The anti-shake motor can drive the light guide module 50 to rotate about the y-axis in FIG. 2 , i.e., to cause the light guide module 50 to perform a head-shaking motion to achieve yaw-axis image stabilization. Furthermore, the anti-shake motor can also drive the light guide module 50 to rotate about the x-axis perpendicular to the paper in FIG. 2 , i.e., to cause the light guide module 50 to perform a head-nodding motion to achieve pitch-axis image stabilization.

[0133] 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.

[0134] The optical lens 110 provided in the embodiment of the present application includes multiple front lens groups and a light guide module 50, wherein the multiple front lens groups are arranged in parallel on the object side of the light guide module 50, and the light guide module 50 can reflect light from different front lens groups to the image sensor 120, so that the optical lens 110 can perform imaging through different front lens groups, that is, the optical lens 110 can enter the first imaging mode or the second imaging mode, and the optical lens 110 has different effective focal lengths in the first imaging mode and in the second imaging mode, that is, the optical lens 110 has different effective focal lengths when the image sensor 120 receives light from different front lens groups, thereby enabling the optical lens 110 to have optical zoom capability, and the optical lens 110 can use different focal lengths (that is, use different front lens groups, or enter different imaging modes) for shooting in different shooting scenes, so that higher quality images can be obtained, the optical lens 110 has better scene adaptability, and the user's shooting experience is greatly improved.

[0135] In addition, the light guide module 50 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 of any front lens group to the image sensor 120, the optical lens 110 can achieve optical image stabilization through whichever front lens group is used for imaging, that is, whether the optical lens 110 works in the first imaging mode or the second imaging mode, and 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.

[0136] FIG3 is a control principle diagram of optical image stabilization of an electronic device 1000 provided in an embodiment of the present application. As shown in FIG3 , the electronic device 1000 further includes a posture sensor 500 and a processing unit 600. The posture sensor 500 is used to collect jitter information of the electronic device 1000 and send the jitter information to the processing unit 600. The processing unit 600 is used to control the image stabilization motor 160 of the camera module 100 based on the jitter information, so that the image stabilization motor 160 can drive the light guide module 50 to rotate or translate to achieve optical image stabilization.

[0137] Furthermore, the processing unit 600 can control the anti-shake motor 160 via the drive unit 161 of the anti-shake motor 160. The processing unit 600 can be, for example, an anti-shake chip, or any processor or controller for performing anti-shake calculations. The drive unit 161 can be, for example, a drive circuit or a drive chip. In this case, the processing unit 600 can calculate jitter compensation information (e.g., the displacement or rotation of the reverse motion) of the light guide module 50 based on the jitter information and send the jitter compensation information to the drive unit 161. The drive unit 161 controls the anti-shake motor 160 based on the jitter compensation information, for example, controlling the magnitude and / or direction of the drive current of the anti-shake motor 160, so that the anti-shake motor 160 drives the light guide module 50 to perform jitter compensation.

[0138] In some examples, the posture sensor 500 includes, but is not limited to, a gyroscope, an accelerometer, an inertial sensor, a Hall sensor, or a magnetic encoder, etc. For example, the posture sensor 500 may be a micro electro mechanical system (MEMS) gyroscope.

[0139] In some examples, the anti-shake motor 40 can be any one of a voice coil motor, a piezo motor, a shape memory alloy (SMA) motor, a MEMS motor, a suspended wire motor, and a ball motor.

[0140] For example, the anti-shake motor 160 may be a voice coil motor. In this case, the anti-shake motor 160 may include three parts: a fixed part, a movable part, and an actuator. The fixed part has a space for accommodating the movable part; the movable part is movably mounted on the fixed part to securely mount the light guide module 50; the actuator is used to drive the movable part to rotate, that is, to drive the light guide module 50 to rotate, to perform shake compensation.

[0141] The actuator usually includes a combination of a coil and a magnet. The coil and the magnet can be fixed on the fixed part and the movable part respectively, and the two can be arranged in parallel. By connecting direct current to the coil, a driving force can be provided to the magnet. By changing the magnitude and direction of the direct current of the coil, the magnitude and direction of the force on the magnet covered by the magnetic field can be controlled. The magnet can provide the driving force to the movable part to drive the movable part to rotate, and the movable part further drives the light guide module 50 to rotate, thereby achieving the function of jitter compensation.

[0142] In some examples, in order to achieve closed-loop control, the anti-shake motor 160 may also include a position detection sensor, which is used to detect the real-time position information of the moving part and send the real-time position information to the drive unit 161. The drive unit 161 controls the coil according to the real-time position information, such as increasing or decreasing the current of the coil, and changing the direction of the current.

[0143] In some examples, the position detection sensor may be a Hall sensor or a magnetoresistive (MR) sensor.

[0144] As shown in FIG. 2 , the optical lens 110 provided in the embodiment of the present application further includes a rear lens group for processing the light (eg, the first light or the second light) from the light guide module 50 and emitting the processed light to the image sensor 120 .

[0145] The present application further provides a rear lens group on the object side of the light guide module 50. The rear lens group may include one or more lenses to improve the imaging specifications and image quality of the optical lens 110. For example, the rear lens group may include two to eight lenses, such as two, four, five, or six lenses.

[0146] As shown in FIG2 , 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. 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 an 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, thereby achieving wide-object-distance imaging from long-range to close-range.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] FIG4 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application. As shown in FIG4 , 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.

[0153] 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.

[0154] 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.

[0155] In some examples, when the light guide module 50 reflects 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 reflects 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.

[0156] The above configuration enables the optical lens 110 to have a larger zoom ratio, thereby improving the shooting performance of the optical lens 110 and meeting the shooting requirements of users 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.

[0157] In some examples, the focal length of the first lens group 10 is ELFG1, and the focal length of the second lens group 20 is ELFG2. When the light guide module 50 reflects the first light to the image sensor 120, 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 effective focal length of the optical lens 110 is ELF1. When the light guide module 50 transmits the second light to the image sensor 120, 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 effective focal length of the optical lens 110 is ELF2. Wherein, ELFG1, ELFG2, ELF1 and ELF2 satisfy the following relationship: EFLG1 / EFL1>0.5, EFLG2 / EFL2>1.0, and EFL1<EFL2.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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。

[0162] 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.

[0163] 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.

[0164] FIG5 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 FIG5 , 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.

[0165] FIG6 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. FIG7 is a schematic diagram of the structure of the camera module 100 shown in FIG6 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 FIG6 and FIG7 .

[0166] As shown in Figures 6 and 7, 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.

[0167] 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. In addition, depending on specific imaging requirements, the first lens group 10 may also include two, three, or more lenses.

[0168] 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 FIG6 , 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 FIG7 , 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.

[0169] When the movable reflector 52 is moved to the first position shown in FIG6 , 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, the second reflector 60, etc., and is incident on the image sensor 120. However, the second light from the second lens group 20 cannot enter the third lens group 30. For example, the second light is directed to other areas inside the electronic device 1000 and is absorbed or consumed. In other words, at this time, the movable reflector 52 connects the first optical axis OA1 corresponding to the first light and the output optical axis of the movable reflector 52, that is, the third optical axis OA3, while the second optical axis OA2 corresponding to the second light is disconnected from the third optical axis OA3.

[0170] When the movable reflector 52 is moved to the second position shown in FIG. 7 , 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, and so on, 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 may be directed to other areas within the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the second optical axis OA2 and the third optical axis OA3, while the first optical axis OA1 and the third optical axis OA3 are disconnected from each other.

[0171] 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.

[0172] 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.

[0173] In some examples, the movable reflector 52 may be a mirror or a prism, such as a right-angle prism.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] In the embodiment of the present application, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. As shown in Figure 6, when the movable reflector 52 is in the first position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. As shown in Figure 7, when the movable reflector 52 is in the second position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0180] In some examples, the power component can drive the movable reflector 52 and the anti-shake motor to move between the first position and the second position. In this way, whether the movable reflector 52 is in the first position or the second position, the same anti-shake motor can drive the movable reflector 52 to perform optical image stabilization, thereby simplifying the anti-shake design.

[0181] In some examples, the movable reflector 52 performs shake compensation to achieve optical image stabilization. The anti-shake motor can drive the movable reflector 52 to rotate about the y-axis in FIG6 , that is, drive the movable reflector 52 to perform a head-shaking motion to achieve yaw-axis image stabilization. In addition, the anti-shake motor can also drive the movable reflector 52 to rotate about the x-axis perpendicular to the paper in FIG6 , that is, drive the movable reflector 52 to perform a head-nodding (raising) motion to achieve pitch-axis image stabilization.

[0182] 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 one or more 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.

[0183] As shown in Figures 6 and 7, 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 third lens 113, a fourth lens 114, and a fifth lens 115, and the fourth lens group 40 includes a sixth lens 116, a seventh lens 117, and an eighth lens 118.

[0184] 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.

[0185] 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.

[0186] As shown in FIG6 , 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 can capture distant images. As shown in FIG7 , 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 can capture near view images.

[0187] As shown in FIG6 , 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.

[0188] As shown in FIG7 , 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.

[0189] 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.

[0190] 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 third lens 113, the fourth lens 114, and the fifth lens 115 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 motor, or a stepping motor.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] In some examples, the multiple lenses of the optical lens 110 are assembled through an active alignment (AA) process to ensure assembly accuracy.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] As shown in FIG. 6 and FIG. 7 , 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 .

[0200] 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 is deflected twice, front and back, for a total of 180 degrees. The plane where the image sensor 120 is located can be parallel to the display screen 300 of the electronic device 1000. As a result, the placement of the image sensor 120 is no longer limited by the thickness of the electronic device 1000, allowing for a larger image sensor to be installed, thereby improving imaging quality.

[0201] Exemplarily, the second reflective element 60 may be a reflective mirror or a prism.

[0202] As shown in Figures 6 and 7, 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.

[0203] 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.

[0204] The following presents a possible embodiment of the optical lens 110 shown in FIG. 6 in combination with specific optical data.

[0205] Please refer to Tables 1, 2a, and 2b. Table 1 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 6. Thickness includes both the thickness of the lens itself and the distance between lenses. Tables 2a and 2b list the aspheric coefficients of each lens in a possible embodiment of the optical lens 110 shown in Figure 6.

[0206] Table 1:

[0207] Table 2a:

[0208] Table 2b:

[0209] The aspheric surface of the optical lens 110 in Table 1 can be defined by, but not limited to, the following aspheric curve equation:

[0210] 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 2a and Table 2b.

[0211] Table 3:

[0212] Table 3 provides other parameter information for the optical lens 110, including, for example, the focal length EFLG1 of the first lens group 10, the focal length EFLG2 of the second lens group 20, the effective focal length EFL1, the full image height ImgH1, the equivalent focal length F1, and the magnification Mag of the optical lens 110 operating in the first imaging mode, the effective focal length EFL2, the full image height ImgH2, and the equivalent focal length F2 of the optical lens 110 operating in the second imaging mode. Where EFL2>EFL1, calculations show that EFLG1 / EFL1=1.67>0.5, EFLG2 / EFL2=1.09>1.1, and F2 / F1=2.49>1. This ensures that, regardless of whether imaging is performed using the first lens group 10 or the second lens group 20, the amount of light reflected by the movable reflector 52 into the rear lens group (i.e., the image sensor 120) does not vary significantly under different anti-shake conditions (i.e., different positions). This ensures that imaging clarity does not vary significantly under different anti-shake conditions, ensuring that the optical lens 110 always has good imaging quality. Furthermore, this ensures that the optical lens 110 has a large zoom ratio.

[0213] FIG8 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. FIG9 is a schematic diagram of the structure of the camera module 100 shown in FIG8 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 FIG6 and FIG7 , in this embodiment, the image sensor 120 can also perform shake compensation.

[0214] Specifically, the movable reflector 52 is also used to perform shake compensation to achieve optical image stabilization. As shown in Figure 8, when the movable reflector 52 is in the first position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. As shown in Figure 9, when the movable reflector 52 is in the second position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0215] In addition, in this embodiment, the image sensor 120 is also used for shake compensation to achieve optical image stabilization. For example, the image stabilization motor can drive the image sensor 120 to translate or rotate to perform shake compensation. In this way, the anti-shake effect of the movable reflector 52 (i.e., lens anti-shake) combined with the anti-shake effect of the image sensor 120 can achieve a better anti-shake effect, further ensuring the shooting quality and improving the user's shooting experience.

[0216] In some examples, the image sensor 120 performs shake compensation to achieve optical image stabilization. The image sensor 120 may be driven by an anti-shake motor to translate along the x-axis in FIG8 to achieve x-axis image stabilization, or translated along the y-axis in FIG8 to achieve y-axis image stabilization. In addition, the anti-shake motor may also drive the image sensor 120 to rotate within the plane formed by the x-axis and the y-axis to achieve roll-axis image stabilization. In this way, combined with the yaw-axis image stabilization and pitch-axis image stabilization of the movable reflector 52, the optical lens 110 can achieve five-axis image stabilization, with better image stabilization effect.

[0217] 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. Figure 10 is a schematic diagram of the structure of the prism 61 provided in the embodiment of the present application. As shown in Figures 8-10, the camera module 100 provided in the embodiment of the present application includes a rear lens group, a prism 61, and an image sensor 120.

[0218] 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 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.

[0219] 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.

[0220] 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.

[0221] 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°.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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 .

[0226] 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°.

[0227] 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.

[0228] 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°.

[0229] 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 11 is a schematic diagram of the structure of another camera module 100 provided in the embodiments of the present application. As shown in Figure 11, 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.

[0230] 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.

[0231] 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. 11 . In this case, light is first converged by the first lens group 10 and then enters the third reflector 63 .

[0232] In some examples, as shown in FIG11 , in order to reduce the volume of the prism, without affecting optical imaging, the vertex angle between the incident surface 613 and the first reflecting surface 611, and the vertex angle between the first reflecting surface 611 and the second reflecting surface 612 can be cut off. At this time, the angle between the incident surface 613 and the first reflecting surface 611, and the angle between the first reflecting surface 611 and the second reflecting surface 612 is the angle between the extension lines of the two surfaces.

[0233] In some examples, as shown in Figures 8 and 9, the rear lens group may also include only one lens group. In this case, the multiple lenses of the rear lens group can be fixedly arranged in sequence on the optical path along the direction from the object side to the image side, that is, the rear lens group can include only one lens group with a fixed position.

[0234] In some examples, in conjunction with the embodiments shown in Figures 4-7 above, the rear lens group includes a third lens group 30 and a fourth lens group 40 arranged sequentially along a third optical axis OA3, with at least one of the third lens group 30 and the fourth lens group 40 being a focus lens group 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.

[0235] 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.

[0236] The following presents a possible embodiment of the optical lens 110 shown in FIG. 8 in combination with specific optical data.

[0237] Please refer to Tables 4, 5a, and 5b. Table 4 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 8. Thickness includes both the thickness of the lens itself and the distance between lenses. Tables 5a and 5b show the aspheric coefficients of each lens in a possible embodiment of the optical lens 110 shown in Figure 8.

[0238] Table 4:

[0239] Table 5a:

[0240] Table 5b:

[0241] The aspheric surface of the optical lens 110 in Table 4 can be defined using, but not limited to, the following aspheric curve equation:

[0242] 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 5a and Table 5b.

[0243] Table 6 provides other parameter information for the optical lens 110, including, for example, the focal length EFLG1 of the first lens group 10, the focal length EFLG2 of the second lens group 20, the effective focal length EFL1, the full image height ImgH1, the equivalent focal length F1, and the magnification Mag of the optical lens 110 when operating in the first imaging mode, and the effective focal length EFL2, the full image height ImgH2, and the equivalent focal length F2 of the optical lens 110 when operating in the second imaging mode. Where EFL2>EFL1, calculation shows that EFLG1 / EFL1=1.5>0.5, EFLG2 / EFL2=1.18>1.0, and F2 / F1=2.13>1. This ensures that, regardless of whether imaging is performed using the first lens group 10 or the second lens group 20, the amount of light reflected by the movable reflector 52 into the rear lens group (i.e., the image sensor 120) does not vary significantly under different anti-shake conditions (i.e., different positions). This ensures that imaging clarity does not vary significantly under different anti-shake conditions, ensuring that the optical lens 110 always has good imaging quality. Furthermore, this ensures that the optical lens 110 has a large zoom ratio.

[0244] Table 6:

[0245] 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. 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 FIG6 and FIG7 , in this embodiment, the light guide module 50 further includes a first reflector 51.

[0246] Specifically, as shown in Figures 12 and 13, in this embodiment, the light guide module 50 includes a first reflector 51 and a movable reflector 52. The first reflector 51 is positioned between the second lens group 20 and the movable reflector 52, and is configured to reflect the second light toward the movable reflector 52. The movable reflector 52 is movable (e.g., rotated) between a first position and a second position. When the movable reflector 52 is in the first position shown in Figure 12, it reflects the first light from the first lens group 10 toward the third lens group 30, and the optical lens 110 enters a first imaging mode. When the movable reflector 52 is in the second position shown in Figure 13, it reflects the second light from the second lens group 20 toward the third lens group 30, and 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 rotate between the first and second positions, the effective focal length of the optical lens 110 can be changed, thereby achieving an optical zoom function.

[0247] When the movable reflector 52 is rotated to the first position 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 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.

[0248] When the movable reflector 52 is moved to the second position shown in FIG13 , 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.

[0249] In some examples, as shown in FIG12 , 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.

[0250] 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.

[0251] Exemplarily, the first reflector 51 may be a reflector or a prism.

[0252] Compared with the camera module 100 shown in Figures 6 and 7 above, 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.

[0253] In some examples, the first reflector 51 can also be configured as a movable reflector that can be moved under the drive of a power component. For example, when the movable reflector 52 is moved to the first position shown in Figure 12, the first light from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30. At this time, the first reflector 51 can be driven to move to reflect the second light from the second lens group 20 to 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 inside 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 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.

[0254] In this embodiment, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. As shown in Figure 12, when the movable reflector 52 is in the first position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. It should be noted that during this time, the movable reflector 52 should not introduce a second light beam into the third lens group 30 or the image sensor 120 while performing shake compensation to avoid the introduction of stray light that may affect imaging quality.

[0255] As shown in FIG13 , when the movable reflector 52 is in the second position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode. It should be noted that during this time, while performing shake compensation, the movable reflector 52 should not introduce the first light into the third lens group 30 or the image sensor 120 to avoid affecting the imaging quality due to the introduction of stray light.

[0256] In some examples, the first reflector 51 is also used for shake compensation to achieve optical image stabilization. For example, the anti-shake motor can drive the first reflector 51 to translate or rotate to perform shake compensation. In this way, the anti-shake of the movable reflector 52 (i.e., lens anti-shake) combined with the anti-shake of the first reflector 51 can achieve a better anti-shake effect, further ensuring the shooting quality of the optical lens 110 in the second imaging mode, and improving the user's shooting experience.

[0257] FIG14 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. FIG15 is a schematic diagram of the structure of the camera module 100 shown in FIG14 in a second imaging mode. As shown in FIG14 and FIG15 , 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 FIG12 and FIG13 .

[0258] Specifically, as shown in Figures 14 and 15, 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, and is used to reflect the second light to the third lens group 30. The movable reflector 52 can move between a first position and a second position (for example, rotating around the left end). When the movable reflector 52 is rotated to the first position shown in Figure 14, 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 Figure 15, the movable reflector 52 avoids the second light. The second light is reflected by the first reflector 51 and successfully reaches the third lens group 30, 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 first lens group 10 and the second lens group 20 have different focal lengths. 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.

[0259] When the movable reflector 52 is rotated to the first position shown in FIG. 14 , 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.

[0260] When the movable reflector 52 is moved to the second position shown in FIG. 15 , 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.

[0261] In some examples, as shown in Figures 14 and 15 , 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 14 can be rotated 45° counterclockwise about the left end to reach the second position in Figure 15 . 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.

[0262] FIG16 is a schematic structural diagram of another example of the camera module 100 shown in FIG14 in the second imaging mode. In some examples, as shown in FIG14 and FIG16 , the right end of the movable reflector 52 can also be set as a rotation axis, and the movable reflector 52 rotates around the right end. For example, the movable reflector 52 located in the first position in FIG14 rotates 45° counterclockwise about the right end as the axis to reach the second position in FIG16 . 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.

[0263] In this embodiment, the first reflective element 51 and the movable reflective element 52 can also be used to perform shake compensation to achieve optical image stabilization.

[0264] As shown in FIG14 , when the movable reflector 52 is in the first position, the movable reflector 52, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. It should be noted that at this time, while performing shake compensation, the movable reflector 52 should not introduce the second light into the third lens group 30 or the image sensor 120. This means that the shielding effect on the second light should not be affected, thereby preventing the introduction of stray light from affecting the imaging quality. As shown in FIG15 , when the movable reflector 52 is in the second position, the first reflector 51, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0265] Figure 17 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. Figure 18 is a schematic diagram of the structure of the camera module 100 shown in Figure 15 in a second imaging mode. As shown in Figures 17 and 18, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable transflective mirror 53.

[0266] Specifically, as shown in Figures 17 and 18, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable transflective mirror 53. The first reflector 51 is located between the second lens group 20 and the controllable transflective mirror 53 and is 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.

[0267] When the controllable transflective mirror 53 is controlled to enter the reflection mode as shown in FIG17 , the controllable transflective mirror 53 reflects the first light from the first lens group 10 toward the third lens group 30, and reflects the second light from the second lens group 20 toward an area outside the third lens group 30, i.e., 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 FIG18 , 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. i.e., 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.

[0268] When the controllable transflective mirror 53 is controlled to enter the reflection mode as shown in FIG17 , 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.

[0269] When the controllable transflective mirror 53 is controlled to enter the transmission mode as shown in FIG18 , 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.

[0270] 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.

[0271] For example, the controllable transflective mirror 53 may include an electrically controllable liquid crystal material layer.

[0272] In this embodiment, the first reflective element 51 and the controllable transflective mirror 53 can also be used to perform shake compensation to achieve optical image stabilization.

[0273] As shown in FIG17 , when the controllable transflective mirror 53 is in the reflection mode, the controllable transflective mirror 53, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. It should be noted that at this time, while performing shake compensation, the controllable transflective mirror 53 should not introduce the second light into the third lens group 30 or the image sensor 120. This means that the shielding effect on the second light should not be affected, thereby preventing the introduction of stray light from affecting the imaging quality. As shown in FIG18 , when the controllable transflective mirror 53 is in the transmission mode, the first reflector 51, driven by the anti-shake motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0274] FIG19 is a schematic structural diagram of another camera module 100 provided in an embodiment of the present application, wherein portion (a) of FIG19 is a schematic structural diagram of the camera module 100 in the second imaging mode, and portion (b) of FIG19 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 FIG6 and FIG7 . For ease of understanding, the rear lens group, the second reflector 60 , and the image sensor 120 and other components located on the image side of the movable reflector 52 (light guide module 50) in the aforementioned embodiment are not shown in FIG19 . The structural details of the optical lens 110 will be further introduced in conjunction with FIG19 .

[0275] As shown in FIG19 , 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 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.

[0276] 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 19, 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 19, 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.

[0277] 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.

[0278] 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 19, 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.

[0279] 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.

[0280] 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 FIG. 22 below will further illustrate this situation.

[0281] 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.

[0282] 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.

[0283] As shown in FIG19 , 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.

[0284] As shown in part (a) of FIG19 , 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.

[0285] As shown in part (b) of FIG19 , 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.

[0286] 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.

[0287] As shown in FIG19 , 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.

[0288] 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.

[0289] In some examples, the light shielding plate 80 and the movable reflector 52 may also be driven by two different driving components.

[0290] 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 .

[0291] 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.

[0292] 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.

[0293] Figure 20 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 20 is a schematic diagram of the structure of the camera module 100 in the second imaging mode, and part (b) of Figure 20 is a schematic diagram of the structure of the camera module 100 in the first imaging mode. Figure 21 is a schematic diagram of the structure of a light shielding plate 80 provided in an embodiment of the present application.

[0294] As shown in Figures 20 and 21 , compared to the embodiment shown in Figure 19 , 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 a notch structure located at the edge of the light shielding plate 80.

[0295] As shown in part (a) of Figure 20, 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.

[0296] As shown in part (b) of Figure 20, 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.

[0297] 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.

[0298] 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 FIG21 , 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.

[0299] Figure 22 is a structural schematic diagram of another camera module 100 provided in an embodiment of the present application, wherein part (a) in Figure 22 is a structural schematic diagram of the camera module 100 in the second imaging mode, and part (b) in Figure 22 is a structural schematic diagram of the camera module 100 in the first imaging mode. Figure 23 is a structural schematic diagram of another light shielding plate 80 provided in an embodiment of the present application. As shown in Figures 22 and 23, relative to the embodiments shown in Figures 20 and 21 above, in this embodiment, the light leakage area 81 is provided 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, and cannot shield the second light.

[0300] As shown in part (a) of Figure 22, 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.

[0301] As shown in part (b) of Figure 22, 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.

[0302] Taking into account 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 22, 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 22, 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 it is necessary to design a shielding 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.

[0303] Figure 24 is a schematic diagram of the structure of another camera module 100 provided in an embodiment of the present application. Part (a) of Figure 24 is a schematic diagram of the structure of the camera module 100 in the second imaging mode, and part (b) of Figure 24 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.

[0304] As shown in part (a) of FIG. 24 , 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.

[0305] As shown in part (b) of FIG. 24 , 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 then switches to a light-blocking mode corresponding to the second region of the second lens group 20, 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.

[0306] 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.

[0307] 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.

[0308] 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.

[0309] 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.

[0310] 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) and a light guide module (50), the optical lens includes 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 image sensor (120); 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 image sensor (120); the optical lens has different effective focal lengths in the first imaging mode and in the second imaging mode; The light guide module (50) is also used for performing jitter compensation to achieve optical anti-shake.

2. The optical lens according to claim 1, wherein: The focal length of the first lens group (10) is ELFG1, the focal length of the second lens group (20) 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.

3. The optical lens according to claim 1 or 2, characterized in that: The optical lens further comprises: The rear lens group is located on the image side of the light guide module (50) and is used to process the light from the light guide module (50) and emit the processed light to the image sensor (120).

4. The optical lens according to claim 3, wherein: 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.

5. The optical lens according to claim 4, wherein: 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 claim 4 or 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 reflect light from the fourth lens group (40) to the image sensor (120).

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: The focal lengths of the first lens group (10) and the second lens group (20) are different.

9. 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.

10. The optical lens according to any one of claims 1 to 9, characterized in that: The light guide module (50) comprises: a movable reflecting member (52) movable between a first position and a second position, wherein when located at the first position, the movable reflecting member (52) is used to reflect the first light to the image sensor (120), and when located at the second position, the movable reflecting member (52) is used to reflect the second light to the image sensor (120); The movable reflector (52) is also used for performing shake compensation to achieve optical anti-shake.

11. The optical lens according to claim 10, 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).

12. The optical lens according to any one of claims 1 to 9, characterized in that: The light guide module (50) comprises a first reflector (51) and a movable reflector (52), wherein: The first reflecting member (51) is used to reflect the second light to the image sensor (120); 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 image sensor (120) and blocks the second light. When located at the second position, the movable reflector (52) When the movable reflector (52) avoids the second light; The first reflective element (51) and the movable reflective element (52) are also used for vibration compensation to achieve optical anti-shake.

13. The optical lens according to any one of claims 1 to 9, 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 image sensor (120); The controllable transflective mirror (53) is located between the first reflective member (51) and the image sensor (120), and 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 image sensor (120) and blocks the second light. When in the transmission mode, the second light passes through the controllable transflective mirror (53) and is emitted toward the image sensor (120). The first reflective element (51) and the controllable transflective mirror (53) are also used for vibration compensation to achieve optical anti-shake.

14. 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 13, wherein the optical lens is used to project light onto the image sensor (120).

15. A camera module, characterized in that: include: A rear lens group, a prism (61) and an image sensor (120), wherein: The rear lens group has a third optical axis (OA3); The prism (61) has an incident surface (613), a first reflecting surface (611), and a second reflecting surface (612). The prism (61) is configured such that light from the rear lens group is incident on the interior of the prism (61) through the incident surface (613), and then is reflected by the first reflecting surface (611) and the second reflecting surface (612) in sequence before being 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.

16. The camera module according to claim 15, wherein: The angle between the photosensitive surface (122) and the third optical axis (OA3) is θ, and 15°≤θ<45°.

17. The camera module according to claim 15 or 16, wherein: The second reflecting surface (612) and the third optical axis (OA3) are parallel to each other, an angle between the first reflecting surface (611) and the incident surface (613) is α, and an angle between the first reflecting surface (611) and the second reflecting surface (612) is β, wherein 0°≤|α-2β|≤10°.

18. The camera module according to any one of claims 15 to 17, characterized in that: The camera module further comprises: a first lens group (10), a second lens group (20) and a light guide module (50), and the camera module 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 camera module 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 camera module 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. The camera module has different effective focal lengths in the first imaging mode and in the second imaging mode.

19. The camera module according to any one of claims 15 to 17, wherein: The camera module also includes: The third reflector (63) is located on the object side of the rear lens group and is used to reflect light to the rear lens group.

20. The camera module according to any one of claims 15 to 19, wherein: The rear lens group comprises a third lens group (30) and a fourth lens group (40) arranged in sequence along the third optical axis (OA3), and at least one lens group among the third lens group (30) and the fourth lens group (40) is a focusing lens group movable along the third optical axis (OA3).

21. An electronic device, characterized in that: The electronic device includes a camera module as described in any one of claims 14-20.

Images