Optical lens, camera module and electronic device

Abstract

The application provides an optical lens, a camera module and an electronic device, and relates to the technical field of electronic devices or optical imaging. The optical lens comprises a first lens group, a second lens group and a light guide module. In a first imaging mode of the optical lens, the light guide module is used to reflect first light rays from the first lens group to an image sensor. In a second imaging mode of the optical lens, the light guide module is used to reflect second light rays from the second lens group to the image sensor. The optical lens has different effective focal lengths in the first imaging mode and the second imaging mode. The light guide module is also used for shake compensation to achieve optical image stabilization. The optical lens provided by the application can achieve optical zooming and optical image stabilization at the same time, has good imaging quality, high imaging clarity, and can improve the user experience.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to an optical lens, a camera module, and an electronic device. Background Technology

[0002] Compared to digital zoom, which suffers from image quality loss, optical zoom offers lossless image quality and significantly improves image quality, making it a key research direction for enhancing the photographic performance of electronic devices. One related technology provides an optical lens with optical zoom capabilities. This lens includes multiple front lens groups and an optical path switching element. The multiple 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 can image light from any one of these lens groups onto an image sensor. The optical zoom function of the optical lens is achieved by switching between these lens groups.

[0003] When users take photos or videos using the camera module of electronic devices, images are easily blurred due to hand tremors, subject movement, or limitations of the optical environment. Optical image stabilization (OIS) technology can effectively solve this problem. However, for optical lenses with optical zoom capabilities, how to achieve optical image stabilization to further improve image quality remains to be solved. Summary of the Invention

[0004] This application provides an optical lens, a camera module, and an electronic device. The optical lens can achieve optical zoom and optical image stabilization, has good image quality and high image clarity, and can improve the user experience.

[0005] 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 includes a first imaging mode and a second imaging mode, wherein the first lens group and the second lens group are disposed 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 ray from the first lens group to an image sensor. When the optical lens is in the second imaging mode, the light guide module is used to reflect a second light ray from the second lens group to the image sensor. The optical lens has different effective focal lengths in the first imaging mode and the second imaging mode. The light guide module is also used for shake compensation to achieve optical image stabilization.

[0006] The optical lens provided in this application includes a first lens group, a second lens group, and a light guide module. The first and second lens groups are arranged side-by-side on the object side of the light guide module as front lens groups. The light guide module can reflect light from the first or second lens group to the image sensor, enabling the optical lens to form an image through the first or second lens group. This allows the optical lens to enter a first imaging mode or a second imaging mode. In the first imaging mode and the second imaging mode, the optical lens has different effective focal lengths. That is, when the image sensor receives light from different front lens groups, the optical lens has different effective focal lengths. This gives the optical lens optical zoom capability. The optical lens can use different focal lengths (i.e., use different front lens groups or enter different imaging modes) to shoot in different shooting scenarios, which can obtain higher quality images. The optical lens has better scene adaptability and greatly improves the user's shooting experience.

[0007] Furthermore, the light guide module is movably configured within the lens and can move (e.g., rotate or translate) under the drive of the image stabilization motor to compensate for camera shake, thereby achieving optical image stabilization. Since the light guide module can selectively reflect light from either the first or second lens group to the image sensor, optical image stabilization can be achieved regardless of whether the optical lens is imaging through the first or second lens group, i.e., whether the optical lens is operating in the first or second imaging mode. This improves the shooting quality of the optical lens in different usage scenarios. The optical lens provided in this application embodiment achieves both optical zoom and optical image stabilization, exhibiting good image quality and high image sharpness, thus enhancing the user experience.

[0008] 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.

[0009] With 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, 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 will not be significantly different under different image stabilization conditions (i.e., different positions). In other words, it can ensure that the image sharpness will not be significantly different under different image stabilization conditions, and ensure that the optical lens always has good image quality.

[0010] In one possible implementation, the optical lens further includes a rear lens group located on the image side of the light guide module, used to process the light from the light guide module and emit the processed light to the image sensor.

[0011] This application improves the imaging specifications and enhances the imaging quality of the optical lens by additionally setting a rear lens group on the object side of the light guide module. The rear lens group may include one or more lenses.

[0012] In one possible implementation, the rear lens group includes a third lens group and a fourth lens group arranged sequentially along the object-to-image direction, wherein at least one of the third lens group and the fourth lens group is a focusing lens group movable along the optical axis.

[0013] The rear lens group of the optical lens provided in this application embodiment includes a third lens group and a fourth lens group, at least one of which is a focusing lens group that can move back and forth along the optical axis. This enables the optical lens to also have an autofocus function, allowing it to achieve both long-distance telephoto shooting and strong close-up (macro) shooting capabilities, realizing wide-range imaging from distant to close-up scenes, and possessing high image quality and sharpness.

[0014] In one possible implementation, one of the third and fourth lens groups has a positive focal length, and the other has a negative focal length.

[0015] A positive focal length of a lens group will have a positive effect on aberrations, while a negative focal length will have a negative effect on aberrations. This application combines the positive and negative focal lengths of the third and fourth lens groups to make the aberrations brought by the two lens groups cancel each other out, which means that the optical lens can obtain smaller aberrations and improve the imaging quality of the lens.

[0016] 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.

[0017] In one possible implementation, the optical lens further includes a second reflector located on the image side of the fourth lens group, the second reflector being used to reflect light from the fourth lens group to the image sensor.

[0018] This embodiment of the application deflects the propagation angle of light by additionally setting a reflector at the rear end of the optical path, thereby enabling flexible adjustment of the image sensor's placement orientation for better space utilization. In this case, the light is deflected a total of 180 degrees, and the plane where the image sensor is located can be parallel to the electronic device's display screen. This removes the limitation on the thickness of the electronic device, allowing for the placement of larger image sensors, which in turn improves image quality. For example, the second reflector can be a mirror or a prism.

[0019] In one possible implementation, the second reflector includes a prism having an incident surface, a first reflecting surface, and a second reflecting surface. The prism is configured such that light from the fourth lens group enters the interior of the prism through the incident surface, and then exits from the first reflecting surface to the image sensor after being reflected sequentially by the first reflecting surface and the second reflecting surface.

[0020] The above settings allow the image sensor to be tilted relative to the thickness of the module. When the image sensor is used for optical image stabilization, the tilted setting of the image sensor also allows the stabilization motor that drives the image sensor to compensate for shake to be tilted as well. This saves space in the thickness direction of the module, preventing the stabilization motor from taking up extra or excessive thickness space. This reduces the size of the camera module in the thickness direction, which is beneficial for reducing the size of the camera module and thus facilitates the design of thinner and lighter electronic devices.

[0021] In one possible implementation, the focal lengths of the first lens group and the second lens group are different.

[0022] With the above settings, the optical lens can more easily obtain different effective focal lengths when forming an image through the first lens and when forming an image through the second lens, which reduces the difficulty of optical path design.

[0023] In one possible implementation, the light guide module includes: a movable reflector that can move between a first position and a second position; when located in the first position, the movable reflector is used to reflect the first light to the image sensor; when located in the second position, the movable reflector is used to reflect the second light to the image sensor; the movable reflector is also used for jitter compensation to achieve optical image stabilization.

[0024] In one possible implementation, the light guide module further includes a first reflector located between the second lens group and the movable reflector, for reflecting the second light rays to the movable reflector.

[0025] 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 is movable between a first position and a second position, wherein when it is in the first position, the movable reflector reflects the first light to the image sensor and blocks the second light, and when it is in the second position, the movable reflector avoids the second light; the first reflector and the movable reflector are also used for shake compensation to achieve optical image stabilization.

[0026] In one possible implementation, the light guide module includes a first reflector and a controllable reflective mirror. The first reflector reflects the second light to the image sensor. The controllable reflective mirror is located between the first reflector and the image sensor. The controllable reflective mirror has a transmission mode and a reflection mode. In the reflection mode, the controllable reflective mirror reflects the first light to the image sensor and blocks the second light. In the transmission mode, the second light passes through the controllable reflective mirror and is directed towards the image sensor. The first reflector and the controllable reflective mirror are also used for shake compensation to achieve optical image stabilization.

[0027] In one possible implementation, the equivalent focal length of the optical lens is F1 in the first imaging mode and F2 in the second imaging mode, wherein F1 and F2 satisfy the following relationship: 1 < F2 / F1 < 10.

[0028] By using the above settings, the optical lens can achieve 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, etc.

[0029] In one possible implementation, the optical lens further includes a light-blocking element configured to: block the first light source when the movable reflector is moved to the second position, thereby preventing the first light source from entering the movable reflector; and / or, block the second light source when the movable reflector is moved to the first position, thereby preventing the second light source from entering the movable reflector.

[0030] With the above settings, the optical lens will not introduce a second ray when imaging with the first ray (i.e., operating in the first imaging mode), effectively avoiding interference from the second ray on the image. Similarly, when imaging with the second ray (i.e., operating in the second imaging mode), the optical lens will not introduce the first ray, effectively avoiding interference from the first ray on the image. This avoids interference between different light rays and prevents light from different front lens groups from simultaneously entering the image sensor, thus preventing ghosting on the image sensor and improving image quality.

[0031] In one possible implementation, the light-shielding member includes a position-variable light-shielding plate, which is moved to a third position to block the first light when the movable reflector is moved to the second position; and to a fourth position to block the second light when the movable reflector is moved to the first position.

[0032] This embodiment of the application achieves the blocking of either the first or second light beam by setting a light-blocking plate with a variable position, enabling precise control of the light path and ensuring a good blocking effect. Furthermore, the implementation method is simple and easy to implement, which helps save lens space and implementation costs, and it has high operational stability, thus improving the reliability of optical lenses.

[0033] In one possible implementation, the movable reflector and the light-shielding plate are synchronously driven by the same drive.

[0034] With the above settings, the same driving component can be reused to switch the positions of the light shield and the movable reflector. This eliminates the need for an additional driving component to drive the light shield, which helps save lens space and implementation costs. Furthermore, the synchronous driving achieved through the same driving component facilitates rapid response to user switching operations, shortens the switching time, and avoids affecting the user experience due to inconsistent position switching.

[0035] In one possible implementation, the light-shielding plate is fixedly connected to the movable reflector, and the light-shielding plate has a light-leaking area; when the movable reflector is moved to the second position, the second light rays enter the movable reflector through the light-leaking area, and the non-light-leaking area of ​​the light-shielding plate blocks the first light rays.

[0036] This embodiment of the application fixes the light-shielding plate and the movable reflector together, which facilitates synchronous driving of the two components through a single drive unit. This saves lens space and implementation costs, allows for rapid response to user switching operations, and shortens the switching time. By setting a light-leaking area on the light-shielding plate opposite to the movable reflector, the optical path can be selected by changing the position of the light-leaking area. Furthermore, due to the presence of the light-leaking area, the light-shielding plate can be positioned between the front lens group and the movable reflector, and it can span from one side of the movable reflector to the other, facilitating a fixed connection between the light-shielding plate and the movable reflector and simplifying their connection structure. For example, the light-shielding plate can be fixedly mounted on the mounting base of the movable reflector, thereby achieving a fixed connection between the two.

[0037] In one possible implementation, the light-shielding member includes a mode-variable light-shielding plate. When the movable reflector is moved to the second position, the light-shielding plate switches to a light-transmitting mode corresponding to the second region of the second lens group, and the second light rays pass through the second region to the movable reflector. The light-shielding plate then switches to a light-shielding mode corresponding to the first region of the first lens group to block the first light rays. When the movable reflector is moved to the first position, the light-shielding plate switches to a light-transmitting mode corresponding to the first region of the first lens group, and the first light rays pass through the first region to the movable reflector. The light-shielding plate then switches to a light-shielding mode corresponding to the second region of the second lens group to block the second light rays.

[0038] The embodiments of this application, through the above settings, can achieve the light-blocking effect of different areas by changing the light transmission properties of different areas. At this time, the light-blocking plate is stationary and does not need to be moved, so there is no need for driving design, which helps to simplify the internal structure of the module.

[0039] In a second aspect, a camera module is provided, including an image sensor and an optical lens provided by any possible implementation of the first aspect, the optical lens being used to project light onto the image sensor.

[0040] Thirdly, 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 reflecting surface, and a second reflecting surface, and the prism is configured such that: light from the rear lens group enters the interior of the prism through the incident surface, and then exits from the first reflecting surface to the image sensor after being reflected sequentially by the first reflecting surface and the second reflecting surface; the photosensitive surface of the image sensor faces the first reflecting surface, and the photosensitive surface is tilted relative to the third optical axis; the image sensor is also used for shake compensation to achieve optical image stabilization.

[0041] According to the camera module provided in this application embodiment, light from the rear lens group enters the prism and undergoes two reflections, first on the first reflecting surface and second on the second reflecting surface, before exiting from the first reflecting surface to the image sensor. The photosensitive surface of the image sensor faces the first reflecting surface and is tilted relative to the third optical axis. The image sensor is typically a sheet-like structure, with the photosensitive surface tilted relative to the third optical axis. In this embodiment, the image sensor is also used for shake compensation to achieve optical image stabilization. Due to the tilted setting of the image sensor, the shake stabilization motor that drives the image sensor for shake compensation can also be tilted. This saves space in the thickness direction perpendicular to the third optical axis, preventing the shake stabilization motor from occupying additional or excessive thickness space. This reduces the size of the camera module in the thickness direction, which is beneficial for reducing the volume of the camera module and facilitates the design of thinner and lighter electronic devices.

[0042] In one possible implementation, the angle between the photosensitive surface and the third optical axis is θ, where 15° ≤ θ < 45°. For example, the value of θ can be 20°, 25°, 27.5°, 30°, 35°, or 40°, etc.

[0043] The above settings allow the image sensor to be tilted as much as possible, saving as much thickness space as possible. On the other hand, they also meet the angle requirements of optical design, such as facilitating total internal reflection (TIR) ​​of light on the first reflecting surface, and ensuring that light exits from the first reflecting surface at a perpendicular angle and enters the photosensitive surface at a perpendicular angle. In other words, the above angle selection can also reduce the difficulty of optical design and improve image quality.

[0044] 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, wherein 0°≤|α-2β|≤10°, for example 0°≤|α-2β|≤5°.

[0045] Because the second reflecting 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 closer the light can exit from the first reflecting surface at a near-perpendicular angle. For example, when α = 2β, the light can exit at a 90-degree angle perpendicular to the first reflecting surface and reach the image sensor. This configuration ensures that the light exits from the first reflecting surface at a perpendicular or near-perpendicular angle. Furthermore, simply making the photosensitive surface parallel to the first reflecting surface is sufficient to ensure that the outgoing light enters the photosensitive surface at a perpendicular or near-perpendicular angle, which helps reduce the complexity of optical design.

[0046] In one possible implementation, α = 55°, β = 27.5° or α = 60°, β = 30°.

[0047] In one possible implementation, the camera module further includes a first lens group, a second lens group, and a light guide module. The camera module includes a first imaging mode and a second imaging mode, wherein the first lens group and the second lens group are disposed 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 a first light ray from the first lens group to the rear lens group. When the camera module is in the second imaging mode, the light guide module is used to reflect a second light ray from the second lens group to the rear lens group. The camera module has a different effective focal length in the first imaging mode and in the second imaging mode.

[0048] 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 to the rear lens group. That is, the camera module can also be a conventional periscope camera module.

[0049] In one possible implementation, the rear lens group includes a third lens group and a fourth lens group arranged sequentially along the third optical axis, wherein at least one of the third lens group and the fourth lens group is a focusing lens group movable along the third optical axis.

[0050] In one possible implementation, one of the third and fourth lens groups has a positive focal length, and the other has a negative focal length.

[0051] In one possible implementation, the rear lens group may also include three, four, five, or more lens groups arranged sequentially along the third optical axis, at least one of which is a focusing lens group, while the rest are fixed lens groups. For example, the rear lens group may also include a sixth lens group, a third lens group, and a fourth lens group arranged sequentially along the third optical axis, wherein the sixth and fourth lens groups are fixed lens groups, while the third lens group located in the middle is a movable focusing lens group.

[0052] Fourthly, an electronic device is provided, the electronic device comprising a camera module provided by any possible implementation of the second or third aspect described above. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0054] Figure 2This is a schematic diagram of the structure of a camera module provided in an embodiment of this application.

[0055] Figure 3 This is a schematic diagram illustrating the control principle of optical image stabilization for an electronic device provided in this application embodiment.

[0056] Figure 4 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0057] Figure 5 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0058] Figure 6 This is a schematic diagram of another camera module in a first imaging mode provided in the embodiments of this application.

[0059] Figure 7 yes Figure 6 The diagram shows the structure of the camera module in the second imaging mode.

[0060] Figure 8 This is a schematic diagram of another camera module in a first imaging mode provided in the embodiments of this application.

[0061] Figure 9 yes Figure 8 The diagram shows the structure of the camera module in the second imaging mode.

[0062] Figure 10 This is a schematic diagram of the structure of the prism provided in the embodiment of this application.

[0063] Figure 11 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0064] Figure 12 This is a schematic diagram of another camera module in a first imaging mode provided in the embodiments of this application.

[0065] Figure 13 yes Figure 12 The diagram shows the structure of the camera module in the second imaging mode.

[0066] Figure 14 This is a schematic diagram of another camera module in a first imaging mode provided in the embodiments of this application.

[0067] Figure 15 yes Figure 14 The diagram shows the structure of the camera module in the second imaging mode.

[0068] Figure 16 yes Figure 14The diagram shows another example of a camera module in the second imaging mode.

[0069] Figure 17 This is a schematic diagram of another camera module in a first imaging mode provided in the embodiments of this application.

[0070] Figure 18 yes Figure 17 The diagram shows the structure of the camera module in the second imaging mode.

[0071] Figure 19 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0072] Figure 20 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0073] Figure 21 This is a schematic diagram of the structure of a light-shielding plate provided in an embodiment of this application.

[0074] Figure 22 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0075] Figure 23 This is a schematic diagram of another light-shielding plate provided in an embodiment of this application.

[0076] Figure 24 This is a schematic diagram of another camera module provided in the embodiments of this application.

[0077] Figure label:

[0078] 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 reflective mirror; 60. Second reflector; 61. Prism; 611. First reflecting surface; 612. Second reflecting surface; 613. Incident surface; 63. Third reflector; 70. Fifth lens group; 80. Light shield; 81. Light passage hole; 90. Driving component; 91. Mounting base;

[0079] 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. Image stabilization motor; 161. Drive unit;

[0080] 200, Back cover; 300, Display screen; 400, Mid-frame; 500, Pose sensor; 600, Processing unit; 1000, Electronic device;

[0081] OA1, first optical axis; OA2, second optical axis; OA3, third optical axis. Detailed Implementation

[0082] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0084] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0085] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0086] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0087] For ease of understanding, the technical terms used in this application will be explained and described below.

[0088] Lens: A component that uses the refraction principle of a lens to allow light from a scene to pass through the lens and form a clear image on the focal plane.

[0089] Optical axis (OA): The direction in which light rays travel through an optical system, referenced to the principal ray at the center of the field of view. For symmetrical transmission systems, it generally coincides with the rotation center line of the optical system. For off-axis and reflective systems, the optical axis may appear as a broken line.

[0090] Object side and image side: With the lens as the boundary, the side where the object is located is called the object side, and the surface of the lens closest to the object side can be called the object side surface; with the lens as the boundary, the side where the image of the object is located is called the image side, and the surface of the lens closest to the image side can be called the image side surface.

[0091] Focal length, also known as focal length, 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 a distant object is projected into a sharp image on the focal plane. It can also be understood as the perpendicular 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 image plane.

[0092] Effective focal length (EFL): The distance from the principal plane of an optical system to the corresponding focal point.

[0093] Equivalent focal length: The equivalent focal length is the focal length of an optical lens that corresponds to the same imaging angle on a 135 camera module, converted from the viewing angle of images on different sized image sensors. In other words, the 135 camera module serves as a standard, converting the focal length of non-135 camera modules to the equivalent focal length of a 135 camera module. Equivalent focal length = Effective focal length of the optical lens * Focal length factor (or focal length multiplier), where the focal length factor is the ratio of the diagonal length of the sensor in a non-135 camera module to the diagonal length of the image sensor in a 135 camera module. Therefore, equivalent focal length = Effective focal length of the optical lens * Diagonal length of the image sensor in a 135 camera module / Total image height. For example, if the effective focal length of the optical lens is 14.8mm, the full image height is 7.0mm, and the diagonal length of the image sensor in the 135 format camera module is 43.27mm, then the equivalent focal length of the optical lens is approximately 14.8 * 43.27 / 7.0 ≈ 91.5mm.

[0094] Focusing: Focusing, also called adjusting the light or focusing the image, is the process of changing the position of the object distance and the camera lens by using the camera's focusing mechanism to make the subject appear sharp. Digital cameras typically have several focusing modes, including autofocus, manual focus, or multiple focus modes.

[0095] Autofocus (AF): Autofocus utilizes the principle of light reflection from the subject. The reflected light passes through the lens and is imaged and received on the image sensor. The computer then processes the image to determine the subject's distance and automatically moves the lens accordingly to achieve focus. The purpose of autofocus is to ensure that objects at different distances are clearly imaged on the image sensor. The camera module typically uses a power structure such as a voice coil motor (VCM) to control the optical lens to move back and forth along the optical axis, thereby adjusting the distance between the lens and the image sensor to achieve autofocus.

[0096] Focal power is equal to the difference between the image-side and object-side convergence of a light beam. It characterizes the ability of an optical system to deflect light rays. Focal power is commonly 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 radius of the spherical surface, f' is the image focal length, and f is the object focal length. Generally, focal power is expressed as the reciprocal of the image-side focal length (approximately assuming the refractive index of air is 1). The above equation for focal power is universally applicable to any optical system (regardless of paraxiality).

[0097] Optical power characterizes the refractive ability of an optical system to refract an incident parallel beam of light. The larger the value of φ, the more pronounced the refraction of the parallel beam; when φ>0, the refraction is converging; when φ<0, the refraction is diverging. When φ=0, corresponding to φ, it is plane refraction. In this case, the axial parallel beam remains axially parallel after refraction, and no refraction occurs.

[0098] Refractive index: When light enters a non-absorbent homogeneous material, reflection and refraction occur at its interface. The refractive index n is equal to the ratio of the speed of light c in a vacuum to its speed v in the medium. In practice, the refractive index is measured by measuring the angle of deflection caused by the refraction of the light beam at the interface; the formula describing this deflection is called Snell's law.

[0099] Field of view (FOV): Also known as the field of view. In optical instruments, the field of view is the angle between the two edges of the lens of the optical instrument, which is the maximum range through which the image of the object can be seen through the lens.

[0100] Aperture stop (STO): A diaphragm is an aperture that limits the maximum angle of inclination of the edge rays in an on-axis point imaging beam, i.e., the aperture with the smallest incident aperture angle. Here, the aperture stop 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 space unit.

[0101] Dispersion: The property of a material whose refractive index changes with the frequency of incident light is called "dispersion." For example, sunlight passing through a prism produces a continuous spectrum of colors arranged in sequence from red to violet. In a broader sense, dispersion not only refers to the decomposition of light waves into a spectrum, but also to any physical quantity that changes with frequency (or wavelength). In the embodiments of this application, after polychromatic light enters the lens, because the lens has different refractive indices for light of different frequencies, the propagation directions of the various colors of light are deflected to different degrees, and thus disperse when leaving the lens, which is called "dispersion."

[0102] Abbe number, also known as dispersion coefficient, is the ratio of the differences in the refractive index of an optical material at different wavelengths, representing the degree of dispersion of the material. The Abbe number is an important indicator of lens imaging quality; a larger Abbe number (dispersion coefficient) indicates less dispersion and better image quality, while a smaller Abbe number (dispersion coefficient) indicates more pronounced dispersion and poorer image quality.

[0103] Aberration: The paraxial region of an optical system has the properties of an ideal optical system, where paraxial rays emitted from a point on an object intersect the image plane at a single point (i.e., the paraxial image point). However, in reality, light rays passing through different apertures of a lens rarely intersect perfectly at a single point, but rather deviate from the position of the paraxial image point. These differences are collectively referred to as aberrations.

[0104] Holographic height (ImgH): refers to the height of the holographic image formed by the lens.

[0105] This application first provides an electronic device, which may be, for example, a mobile phone, tablet computer, laptop computer, television set, in-vehicle equipment, wearable device, personal digital assistant (PDA), point of sale (POS), camera, video surveillance equipment, or other electronic products with photography or video recording functions. A mobile phone may be, for example, a conventional candybar phone or a foldable phone, such as a small vertical folding phone, a left-right inward folding phone, or a left-right outward folding phone. Wearable devices may be, for example, smart bracelets, smartwatches, wireless headphones, augmented reality (AR) glasses, AR headsets, virtual reality (VR) glasses, or VR headsets. This application embodiment uses a mobile phone as an example for illustration.

[0106] Figure 1 This is a schematic diagram of the structure of the electronic device 1000 provided in an embodiment of this application. For example... Figure 1As shown, the electronic device 1000 includes a camera module 100, a back cover 200, a display screen 300, a frame 400, and an image processor (not shown) located inside the device. The back cover 200 and the display screen 300 are fixed to the two sides of the frame 400 opposite to each other, and the back cover 200, the display screen 300, and the frame 400 together enclose the entire internal cavity of the electronic device 1000.

[0107] The display screen 300 can be used to display images and can also integrate touch functionality for human-computer interaction. The camera module 100 is housed within the overall cavity of the device. The camera module 100 is used to acquire optical information from the outside of the electronic device 1000 and form corresponding image signals. The image processor is communicatively connected to the camera module 100, and is used to acquire and process image signals from the camera module 100. The communication connection between the camera module 100 and the image processor can include data transmission via electrical connections such as wiring, or data transmission via coupling. It is understood that the camera module 100 and the image processor can also communicate via other methods capable of data transmission.

[0108] In some examples, the back cover 200 may have a camera aperture through which the camera module 100 collects light. The camera module 100 can be used as a rear camera of the electronic device 1000. Exemplarily, the back cover 200 may include a light-transmitting lens mounted in the camera aperture to allow light to pass through and to provide dust and water resistance. This light-transmitting lens can also be considered part of the camera module 100 in some cases. For example, the light-transmitting lens could be... Figure 1 The first light-transmitting lens 140 and the second light-transmitting lens 150 are in the middle.

[0109] In some examples, the camera module 100 can also serve as a front-facing camera for the electronic device 1000. For instance, the display screen 300 may have a light-transmitting area, through which the camera module 100 can capture optical information from the outside of the electronic device 1000. That is, the camera module 100 can be used as a front-facing camera module for the electronic device 1000, or as a rear-facing camera module for the electronic device 1000; this application does not impose strict limitations on this.

[0110] In practical applications, the electronic device 1000 may have one camera module, i.e., only camera module 100, or it may have two, three, four, five, or more camera modules, including camera module 100. When there are multiple camera modules, these multiple camera modules can be arranged on the side of the electronic device 1000 in a certain way. For example, one or more of them may be set on the front side where the display screen 300 is located, and used as a front-facing camera, while the remaining one or more camera modules may be set on the rear cover 200, and used as a rear-facing camera.

[0111] In some examples, electronic device 1000 may include one or more of the following: a front-facing camera (module), a rear-facing 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 camera module 100 may be any of the aforementioned lenses.

[0112] In some examples, the camera module 100 can be electrically connected to the motherboard inside the main unit. As one implementation, the camera module 100 can be electrically connected to the motherboard via an electrical connector. For example, the camera module 100 has a male connector socket, and the motherboard has a female connector socket; the camera module 100 is electrically connected to the motherboard by inserting the female socket into the male socket. The motherboard has a processor that controls the camera module 100 to capture images. When the user inputs a shooting command, the processor receives the command and controls the camera module 100 to capture images of the subject according to the command.

[0113] In some examples, the electronic device 1000 may also include an analog-to-digital converter (also called an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 100 and the image processor. The analog-to-digital converter is used to convert the analog image signal generated by the camera module 100 into a digital image signal and transmit it to the image processor. 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.

[0114] In some examples, the electronic device 1000 may also include a memory (not shown) communicatively connected to an image processor. The image processor transmits processed image signals to the memory so that the processed image signals can be retrieved from the memory and displayed on the screen when the image needs to be viewed later. In some embodiments, the image processor may also compress the processed image signals before storing them in the memory to save memory space.

[0115] Figure 2 This is a structural schematic diagram of a camera module 100 provided in an embodiment of this application, as shown below. Figure 2 As shown, the camera module 100 in this embodiment includes an optical lens 110 and an image sensor 120.

[0116] 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), on which the image sensor 120 may be mounted. Light can pass through the optical lens 110 and illuminate the image sensor 120. Exemplarily, the camera module 100 operates as follows: light reflected from the subject passes through the optical lens 110 to generate an optical image, which is then projected onto the image sensor 120. The image sensor 120 converts the optical image into an electrical signal, i.e., an analog image signal, and transmits it to an analog-to-digital converter (ADC) for conversion into a digital image signal, which is then sent to the image processor.

[0117] The image sensor 120 (also called a photosensitive element) is a semiconductor chip containing hundreds of thousands to millions of photodiodes on its surface, which generate electrical charges when exposed to light. The 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 charges. It consists of many photosensitive units, typically measured in megapixels. When the surface of the CCD (the photosensitive surface) is illuminated, each photosensitive unit reflects a charge onto the component. The signals generated by all the photosensitive units are added together to form a complete image. A CMOS primarily utilizes silicon and germanium, creating a semiconductor where N- and P-polar semiconductors coexist. The current generated by these complementary effects can be recorded and interpreted by the processing chip as an image.

[0118] In some examples, the image sensor 120 can move in a plane perpendicular to the thickness direction of the camera module 100 or tilt relative to the thickness direction of the camera module 100 to achieve image stabilization. In this case, the image sensor 120 does not have the ability to move in the direction parallel to the thickness direction of the camera module 100, or has a very small travel much smaller than the focusing stroke, to reduce the module thickness. In other embodiments, the image sensor 120 may also be a fixed component and therefore unable to perform shake compensation.

[0119] In some examples, such as Figure 2As shown, the camera module 100 also includes a filter 130. The filter 130 can be located between the optical lens 110 and the image sensor 120 to filter out unwanted wavelengths of light, preventing the image sensor 120 from producing false colors or ripples, thereby improving its effective resolution and color reproduction. For example, the filter 130 can be an infrared filter, such as an infrared radiation-cut filter (IRCF). In this embodiment, the filter 130 is a separate component located between the optical lens 110 and the image sensor 120. In other embodiments, the filter 130 can be positioned anywhere before the image sensor 120, or the filter 130 can be omitted entirely, and filtering can be achieved by surface treatment or material treatment of at least one optical element of the optical lens 110. This application does not strictly limit the specific embodiments of the structure or component used to achieve filtering.

[0120] For example, filter 130 can be achieved by depositing an infrared (IR) material coating on a sapphire substrate.

[0121] For example, filter 130 can be a white glass filter or a blue glass filter, etc.

[0122] This application mainly relates to structural improvements to the optical lens 110. The structural details of the optical lens 110 are described below with reference to the accompanying drawings. Figure 2 As shown, the optical lens 110 includes multiple front lens groups and a light guide module 50.

[0123] Multiple front lens groups, including the first lens group 10 and the second lens group 20, are arranged side-by-side 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 enter the light guide module 50 through any one of the front lens groups. The multiple front lens groups can be configured one-to-one with multiple camera holes on the electronic device 1000; that is, multiple front lens groups can correspond one-to-one with multiple light-transmitting lenses. External ambient light passes through the light-transmitting lens and enters the corresponding front lens group, then passes through that front lens group and reaches the light guide module 50.

[0124] For example, such as Figure 2As shown, the multiple front lens groups include a first lens group 10 and a second lens group 20 arranged side-by-side on the object side of the light guide module 50. The first lens group 10 is correspondingly arranged with a first light-transmitting lens 140. Ambient light from the outside (denoted as the first ray) enters the first lens group 10 through the first light-transmitting lens 140, and after being converged by the first lens group 10, it is directed to the light guide module 50. The second lens group 20 is correspondingly arranged with a second light-transmitting lens 150. Ambient light from the outside (denoted as the second ray) enters the second lens group 20 through the second light-transmitting lens 150, and after being converged by the second lens group 20, it is directed to the light guide module 50.

[0125] The light guide module 50 acts as a switching switch in the optical path. The optical paths containing the multiple front lens groups can be considered as multiple upstream optical paths, and the optical path between the light guide module 50 and the image sensor 120 can be considered as a downstream optical path. These 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 enable one of the multiple upstream optical paths to be interconnected with the downstream optical path, allowing light from the upstream optical path to be 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, while the remaining upstream optical paths can be disconnected from the downstream optical path. Alternatively, the light guide module 50 can transmit light from any one of the front lens groups to the image sensor 120, while preventing light from the remaining front lens groups from being transmitted to the image sensor 120.

[0126] Under the switching action of the light guide module 50, the optical lens 110 can project light from different front lens groups onto the image sensor 120. That is, the optical lens 110 can form an image through different front lens groups. Furthermore, the optical lens 110 has different effective focal lengths when forming an image through different front lens groups. In other words, 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.

[0127] For example, such as Figure 2As shown, the light guide module 50 has two front lens groups on its object side, namely a first lens group 10 and a second lens group 20. The light guide module 50 is used to transmit the first light rays from the first lens group 10 to the image sensor 120, and prevent the second light rays 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 rays), and the optical lens 110 enters a first imaging mode. The effective focal length of the optical lens 110 at this time is EFL1. In addition, the light guide module 50 can also transmit the second light rays from the second lens group 20 to the image sensor 120, and prevent the first light rays 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 rays), and the optical lens 110 enters a second imaging mode. The effective focal length of the optical lens 110 at this time is EFL2. Since the effective focal lengths EFL1 and EFL2 are different, the optical lens 110 can work at different effective focal lengths, that is, the optical lens 110 can work in different imaging modes, thus giving the optical lens 110 optical zoom capability.

[0128] In this embodiment, 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 the image stabilization motor (not shown in the figure), thereby achieving optical image stabilization and improving the shooting quality of the optical lens 110.

[0129] Specifically, when the gyroscope of the electronic device detects shaking, the image stabilization motor of the camera module 100 can move the light guide module 50 in the opposite direction (e.g., translate or rotate) to compensate for the shaking, that is, to compensate for the image blur caused by shaking during exposure. At this time, the light guide module 50 is moved by the image stabilization motor, which ensures that the light that should be incident on a certain imaging point will not be deflected and incident on other positions, thereby ensuring the image quality and improving the user's photography experience.

[0130] In some examples, the light guide module 50 performs jitter compensation to achieve optical image stabilization, which can be achieved by a stabilization motor driving the light guide module 50 to rotate around... Figure 2 The y-axis of the light guide module 50 rotates, thus causing the light guide module 50 to tilt and oscillate, achieving yaw-axis image stabilization. Furthermore, the image stabilization motor can also cause the light guide module 50 to rotate around... Figure 2 The rotation along the x-axis perpendicular to the paper plane causes the light guide module 50 to nod (raise) to achieve pitch axis stabilization.

[0131] In some examples, the light guide module 50 includes one or more optical elements to achieve optical path selection. These one or more optical elements may be one or more reflectors. The light guide module 50 performs jitter compensation to achieve optical image stabilization. This application does not limit the scope of the optical element compensation to optical image stabilization.

[0132] The optical lens 110 provided in this embodiment includes multiple front lens groups and a light guide module 50. The multiple front lens groups are arranged side by side on the object side of the light guide module 50. 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 form an image through different front lens groups. This allows the optical lens 110 to enter a first imaging mode or a second imaging mode. In the first imaging mode and the second imaging mode, the optical lens 110 has different effective focal lengths. That is, when the image sensor 120 receives light from different front lens groups, the optical lens 110 has different effective focal lengths. This gives the optical lens 110 optical zoom capability. The optical lens 110 can use different focal lengths (i.e., use different front lens groups or enter different imaging modes) to shoot in different shooting scenarios, which can obtain higher quality images. The optical lens 110 has better scene adaptability, and the user's shooting experience is greatly improved.

[0133] Furthermore, the light guide module 50 is movably configured within the lens and can move (e.g., rotate or translate) under the drive of the image stabilization motor to compensate for camera shake, thereby achieving optical image stabilization. Since the light guide module 50 can selectively reflect light from any front lens group to the image sensor 120, the optical lens 110 can achieve optical image stabilization regardless of which front lens group it uses for imaging—that is, whether the optical lens 110 is operating in the first imaging mode or the second imaging mode—thus improving the shooting quality of the optical lens 110 in different usage scenarios. The optical lens 110 provided in this embodiment achieves both optical zoom and optical image stabilization, resulting in good image quality, high image sharpness, and an improved user experience.

[0134] Figure 3 This is a schematic diagram illustrating the control principle of optical image stabilization in the electronic device 1000 provided in this application embodiment. Figure 3As shown, the electronic device 1000 also includes a pose sensor 500 and a processing unit 600. The pose sensor 500 is used to collect the 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 according to the jitter information, so that the image stabilization motor 160 can drive the light guide module 50 to rotate or translate, thereby achieving optical image stabilization.

[0135] Furthermore, the processing unit 600 can control the anti-shake motor 160 through 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 the shake compensation information (e.g., the displacement or rotation amount of the reverse movement) of the light guide module 50 based on the shake information, and send the shake compensation information to the drive unit 161. The drive unit 161 controls the anti-shake motor 160 based on the shake compensation information, for example, by 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 shake compensation.

[0136] In some examples, the pose sensor 500 includes, but is not limited to, a gyroscope, accelerometer, inertial sensor, Hall sensor, or magnetic encoder. For example, the pose sensor 500 can be a microelectromechanical system (MEMS) gyroscope.

[0137] In some examples, the stabilization motor 40 can be any of the following: a voice coil motor, a piezo motor, a shape memory alloy (SMA) motor, a MEMS motor, a wire motor, and a ball motor.

[0138] For example, the image stabilization motor 160 can be a voice coil motor. In this case, the image stabilization motor 160 can include three parts: a fixed part, a movable part, and an actuator. The fixed part has a receiving space for accommodating the movable part; the movable part is movably disposed on the fixed part for fixing and installing 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, so as to perform shake compensation.

[0139] The actuator typically includes a combination of a coil and a magnet. The coil and magnet can be fixedly mounted on a fixed part and a movable part, respectively. They can be arranged in parallel facing each other. By connecting the coil to a DC current, a driving force can be provided to the magnet. By changing the magnitude and direction of the DC current in the coil, the magnitude and direction of the force on the magnet covered by the magnetic field can be controlled. The magnet can provide this driving force to the movable part to drive the movable part to rotate. The movable part further drives the light guide module 50 to rotate, thereby achieving the function of jitter compensation.

[0140] In some examples, to achieve closed-loop control, the anti-shake motor 160 may also include a position detection sensor for detecting the real-time position information of the moving part and sending 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.

[0141] In some examples, the position detection sensor can be a Hall sensor or a magnetoresistive (MR) sensor.

[0142] like Figure 2 As shown, the optical lens 110 provided in this embodiment of the application also includes a rear lens group for processing the light (e.g., the first light or the second light) from the light guide module 50 and sending the processed light to the image sensor 120.

[0143] This application improves the imaging specifications and enhances the imaging quality of the optical lens 110 by additionally providing a rear lens group on the object side of the light guide module 50. The rear lens group may include one or more lenses. For example, the rear lens group may include two to eight lenses, such as two, four, five, or six.

[0144] like Figure 2 As shown, the rear lens group includes a third lens group 30 and a fourth lens group 40 arranged sequentially along the object-side to image-side direction. Light rays (e.g., a first light ray or a second light ray) from the light guide module 50 pass sequentially through the third lens group 30 and the fourth lens group 40 before being directed to the image sensor 120. In this embodiment, 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 high-quality telephoto shooting and strong close-up (macro) shooting capabilities, realizing wide object distance imaging from distant to close-up.

[0145] The rear lens group of the optical lens 110 provided in this embodiment includes a third lens group 30 and a fourth lens group 40, at least one of which is a focusing lens group that can move back and forth along the optical axis. This enables the optical lens 110 to also have an autofocus function, allowing it to achieve both long-distance telephoto shooting and strong close-up (macro) shooting capabilities, realizing wide-range imaging from distant to close-up views, and possessing high image quality and sharpness.

[0146] 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 settings, the optical lens 110 can more easily obtain different effective focal lengths when imaging through different front lens groups, thus reducing the difficulty of optical path design.

[0147] In some examples, some or all of the lens groups in multiple front lens groups may have the same focal length. In this case, the effective focal length of the optical lens 110 can be changed by altering the distance between the front lens group and the rear lens group, etc. That is, for multiple lens groups with the same focal length, the distances between these multiple lens groups and the rear lens group can be different, and the above settings can also enable the optical lens 110 to obtain different effective focal lengths when imaging through different front lens groups.

[0148] In some examples, the first lens group 10 and the second lens group 20 each include at least one imaging lens. The number of lenses in the first lens group 10 and the second lens group 20 may be the same or different. For example, the first lens group 10 and / or the second lens group 20 may include one, two, three or more lenses. When the first lens group 10 and / or the second lens group 20 includes multiple lenses, the multiple lenses may be arranged sequentially at intervals and parallel along the optical axis.

[0149] In some examples, the focal lengths of the first lens group 10 and the second lens group 20 are not the same; both focal lengths can be positive, both can be negative, or one can be positive and the other negative. The focal length of the first lens group 10 is greater than the focal length of the second lens group 20, or the focal length of the first lens group 10 can be less than the focal length of the second lens group 20.

[0150] Figure 4 This is a schematic diagram of another camera module 100 provided in an embodiment of this application. For example... Figure 4As shown, in a special implementation, the focal length of one lens group in the first lens group 10 and the second lens group 20 can be 0, while 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. In this case, the second lens group 20 may not have any lenses; that is, no lenses are placed in the optical path where the second lens group 20 is located. The second lens group 20 is only equivalent to a light source entrance, and the second light ray 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 lenses in the second lens group 20 can be plane mirrors with an optical power of 0.

[0151] In some examples, the first lens group 10 and the second lens group 20 have the same focal length (non-zero), but different distances from the rear lens group. With this configuration, the optical lens 110 can have different effective focal lengths when imaging with either the first lens group 10 or the second lens group 20.

[0152] In some examples, the light guide module 50 may include any optical element capable of switching and selecting the light from multiple front lens groups. For example, the light guide module 50 may include one or more reflectors, controllable mirrors, etc. The structural details of the light guide module 50 will be further described below through several embodiments.

[0153] In some examples, when the light guide module 50 reflects the first light ray 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 denoted as F1. When the light guide module 50 reflects the second light ray 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 denoted as F2. F1 and F2 satisfy the following relationship: 1 < F2 / F1 < 10.

[0154] The above settings enable the optical lens 110 to have a large zoom ratio, improving its shooting performance and meeting users' 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.

[0155] 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. ELFG1, ELFG2, ELF1, and ELF2 satisfy the following relationship: EFLG1 / EFL1 > 0.5, EFLG2 / EFL2 > 1.0, and EFL1 < EFL2.

[0156] With the above settings, it can be ensured that whether the first lens group 10 or the second lens group 20 is used for imaging, that is, whether the optical lens 110 is working in the first imaging mode or the second imaging mode, the amount of light reflected by the light guide module 50 into the image sensor 120 will not be significantly different under different image stabilization states (i.e., different positions). In other words, it can be ensured that the image sharpness will not be significantly different under different image stabilization states, and that the optical lens 110 always has good image quality.

[0157] 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 may be the same or different. For example, the third lens group 30 and / or the fourth lens group 40 may include two, three, four or more lenses. When the third lens group 30 and / or the fourth lens group 40 includes multiple lenses, the multiple lenses may be arranged sequentially at intervals and in parallel along the optical axis.

[0158] In some examples, the third lens group 30 is a focusing 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 focusing lens group that can move back and forth along the optical axis. Or, both the third lens group 30 and the fourth lens group 40 are focusing lens groups that can move back and forth along the optical axis.

[0159] In some examples, focusing and macro shooting effects are achieved by moving the third lens group 30 along the optical axis. The magnification Mag at macro (i.e., the closest focusing distance, e.g., 60–100 mm) satisfies: 0.2. <Mag<0.5。

[0160] In some examples, the focal length of one of the third lens group 30 and the fourth lens group 40 is positive, and the focal length of the other lens group is negative. For example, the focal length of the third lens group 30 is positive (e.g., 13mm), and the focal length of the fourth lens group 40 is negative (e.g., -11mm); or, the focal length of the third lens group 30 is negative, and the focal length of the fourth lens group 40 is positive. A positive focal length will have a positive effect on aberrations, while a negative focal length will have a negative effect on aberrations. This application, by combining the positive and negative focal lengths of the third lens group 30 and the fourth lens group 40, enables the aberrations introduced by the two lens groups to cancel each other out, thus enabling the optical lens 110 to obtain smaller aberrations and improving the image quality of the lens.

[0161] In some examples, such as Figure 2 As shown, multiple front lens groups are arranged in a straight line and positioned 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 rear 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, at this time, each front lens group and the rear lens group together form a periscope structure, thereby making the arrangement position and angle of the optical lens 110 more flexible.

[0162] Figure 5 This is a schematic diagram of another camera module 100 provided in an embodiment of this application. In some examples, such as Figure 5 As shown, multiple front lens groups can be arranged on two opposite sides of the light guide module 50. For example, the first lens group 10 and the second lens group 20 are arranged on one side of the light guide module 50, and the fifth lens group 70 is arranged on the other side of the light guide module 50. The first lens group 10 is corresponding to the first light-transmitting lens 140 on the rear cover 200, the second lens group 20 is corresponding to the second light-transmitting lens 150 on the rear cover 200, and the fifth lens group 70 is corresponding to the light-transmitting area on the display screen 300. The light guide module 50 can reflect light from any of the front lens groups to the rear lens group. That is to say, at this time, any of the front lens groups and the rear lens group together form a periscope structure layout. Furthermore, 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.

[0163] Figure 6 This is a schematic diagram of another camera module 100 in a first imaging mode provided in the embodiments of this application. Figure 7 yes Figure 6 The diagram shows the camera module 100 in the second imaging mode. The camera module 100 provided in this embodiment can be considered as described above. Figure 2A more specific and lower-level implementation of the camera module 100 shown below, in conjunction with... Figure 6 and Figure 7 The structural details of the optical lens 110 will continue to be introduced.

[0164] like Figure 6 and Figure 7 As shown, in this embodiment, the front lens group includes a first lens group 10 and a second lens group 20, the light guide module 50 includes a movable reflector 52, and the rear lens group includes a third lens group 30 and a fourth lens group 40. The first lens group 10 and the second lens group 20 are arranged side-by-side as non-shared lens groups on the object side of the movable reflector 52, while the third lens group 30 and the fourth lens group 40 are arranged sequentially along the optical axis on the image side of the movable reflector 52.

[0165] 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, such as a first lens 111. Furthermore, 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, such as a second lens 112. Furthermore, depending on specific imaging requirements, the first lens group 10 may also include two, three, or more lenses.

[0166] As a specific implementation of the aforementioned light guide module 50, the light guide module 50 includes a movable reflector 52, which is located between the front lens group and the third lens group 30, and can move (e.g., translate) between a first position and a second position. Figure 6 When the movable reflector 52 is in the first position shown, it reflects the first light ray from the first lens group 10 to the third lens group 30, at which time the optical lens 110 enters the first imaging mode; when the movable reflector 52 is in the third position ... Figure 7 In the second position shown, the movable reflector 52 reflects the second light rays from the second lens group 20 to the third lens group 30, at which point the optical lens 110 enters the second imaging mode. Since the first lens group 10 and the second lens group 20 have different focal lengths, controlling the movable reflector 52 to switch between the first and second positions changes the effective focal length of the optical lens 110, thus achieving optical zoom.

[0167] When the movable reflector 52 is moved to Figure 6In the first position shown, the optical lens 110 operates in the first imaging mode. The first light ray from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then sequentially passes through the fourth lens group 40, the second reflector 60, etc., before entering the image sensor 120. The second light ray from the second lens group 20 cannot enter the third lens group 30; for example, the second light ray is directed towards 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 ray and the outgoing optical axis of the movable reflector 52, i.e., the third optical axis OA3, while the second optical axis OA2 corresponding to the second light ray is disconnected from the third optical axis OA3.

[0168] When the movable reflector 52 is moved to Figure 7 In the second position shown, the optical lens 110 operates in the second imaging mode. The second light rays from the second lens group 20 are reflected by the movable reflector 52 to the third lens group 30, and then sequentially pass through the fourth lens group 40, the second reflector 60, etc., before entering the image sensor 120. The first light rays from the first lens group 10 cannot enter the third lens group 30; for example, the first light rays may be directed towards other areas inside the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the second optical axis OA2 and the third optical axis OA3, while the first optical axis OA1 and the third optical axis OA3 are disconnected from each other.

[0169] In some examples, the movable reflector 52 can be moved between the first and second positions by any power component such as a motor, cylinder, or electric motor. For example, a motor can be used as the power component to drive the movable reflector 52 to translate between the first and second positions via a ball screw assembly.

[0170] In some examples, the front lens group may include more than one, in which case the movable reflector 52 can move (e.g., translate) between more 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 can also be moved to a third position, in which the movable reflector 52 reflects a third ray from the fifth lens group 70 to the third lens group 30.

[0171] In some examples, the movable reflector 52 can be a mirror or a prism, such as a right-angle prism.

[0172] In some examples, the reflective surface of the movable reflector 52 can be a metal reflective film layer prepared by vapor deposition or sputtering, and the metal can be nickel, aluminum, silver, gold, or their alloys.

[0173] In some examples, a high-reflectivity film design can be used, where a high-reflectivity film is placed on the reflective surface to improve image quality.

[0174] 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 in the visible light (380nm to 780nm) and high transmittance in the ultraviolet (below 380nm) and near-infrared (above 780nm) bands, thereby reducing the amount of non-visible light entering the image sensor 120 and improving the quality of imaging.

[0175] In some examples, the reflectivity of the reflective surface can be required to be above 95% in the visible light bandwidth, with no reflectivity constraints for the ultraviolet and near-infrared regions.

[0176] In some examples, the reflecting surface of the movable reflector 52 can be a plane, which has good machinability. Alternatively, the reflecting surface of the movable reflector 52 can also be a spherical surface (concave or convex), a cylindrical surface (curved in one direction and straight in the other), or a freeform surface. In this case, the reflecting surface of the movable reflector 52 can correct astigmatism and aberrations while reflecting light, thereby further improving image quality or reducing size.

[0177] In this embodiment, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. For example... Figure 6 As shown, when the movable reflector 52 is in the first position, the movable reflector 52, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. Figure 7 As shown, when the movable reflector 52 is in the second position, the movable reflector 52, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0178] In some examples, the power components can work together to drive the movable reflector 52 and the image stabilization motor to move between a first position and a second position. This way, regardless of whether the movable reflector 52 is in the first or second position, optical image stabilization can be achieved by the same image stabilization motor, thus simplifying the image stabilization design.

[0179] In some examples, the movable reflector 52 performs shake compensation to achieve optical image stabilization, which can be achieved by a stabilization motor driving the movable reflector 52 to rotate around... Figure 6 The motor rotates along the y-axis, causing the movable reflector 52 to oscillate, thus stabilizing the deflection axis. Furthermore, the stabilization motor can also cause the movable reflector 52 to rotate around... Figure 6 The x-axis perpendicular to the paper rotates, which drives the movable reflector 52 to nod (raise its head) to achieve pitch axis anti-shake.

[0180] The rear lens group is located on the image side of the movable reflector 52 and is used to converge the light reflected from the movable reflector 52 and image it onto the image sensor 120. The rear lens group includes one or more lenses to improve the specifications of the optical lens 110 and enhance image quality. For example, the rear lens group may include two to eight lenses, such as two, four, five, or six.

[0181] like Figure 6 and Figure 7 As shown, 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, such as two, three, four, or more lenses. The fourth lens group 40 includes at least one lens, such as 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.

[0182] In this embodiment, the third lens group 30 is a focusing lens group, and the fourth lens group 40 is a lens group with a fixed position. The third lens group 30 can move back and forth on the third optical axis OA3, thereby realizing the autofocus process.

[0183] This application, by changing the distance between the third lens group 30 and the fourth lens group 40, enables the optical lens 110 to achieve both high-quality telephoto shooting at long distances and strong close-up shooting capabilities, realizing wide-range imaging from distant to close-up. Furthermore, employing a single-group focusing method simplifies the movement of the optical lens's focusing structure, thereby simplifying the focusing process.

[0184] like Figure 6 As shown, when the optical lens 110 is focused on a distant scene (infinity), the third lens group 30 moves along the optical axis to the image side. The light reflected by the distant object passes through the optical lens 110 and is imaged onto the imaging surface of the image sensor 120, enabling the camera module 100 to capture a distant image. Figure 7 As shown, when the optical lens 110 focuses on the near scene, the third lens group 30 moves along the optical axis to the object side. The light reflected by the near object passes through the optical lens 110 and is imaged on the imaging surface of the image sensor 120, so that the camera module 100 can capture a near scene image.

[0185] like Figure 6As shown, during the focusing process of the optical lens 110 switching from near view to far view, the third lens group 30 moves along the optical axis to the image side, while 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.

[0186] like Figure 7 As shown, during the focusing process of the optical lens 110 switching from a distant view to a close view, the third lens group 30 moves along the optical axis to the object side, while 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.

[0187] In this embodiment, focusing is achieved by moving the third lens group 30 and fixing the fourth lens group 40. This ensures that when focusing on a close-up scene, the object-side surface of the optical lens 110 is closer to the subject, resulting in a smaller degree of light refraction, which reduces aberrations and improves image quality.

[0188] In some examples, a focusing motor can be used to move the third lens group 30 along the optical axis. For instance, the focusing motor can simultaneously move the three lenses of the third lens group 30—the third lens 113, the fourth lens 114, and the fifth lens 115—as a whole along the third optical axis OA3 towards the object side or towards the image side, thereby achieving the aforementioned focusing process. This focusing motor can be, for example, a voice coil motor, a piezoelectric motor, a shape memory alloy motor, or a stepper motor.

[0189] In some examples, the multiple lenses of the optical lens 110 can be made of the same material, such as glass or resin. Glass, with its high refractive index and low expansion characteristics, gives the optical lens 110 better image quality and lower temperature drift characteristics. Resin, with its low density, reduces the weight of the lens assembly, facilitating movement and improving the focusing capability 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 than the other lenses; this application does not limit this.

[0190] In some examples, the multiple lenses of the optical lens 110 can be formed using processes such as injection molding, compression molding, and / or polishing.

[0191] In some examples, at least one lens of the optical lens 110 has an aspherical optical surface. The aspherical shape of the optical surface has different optical powers from the paraxial region to the outer field of view, thereby achieving a more uniform image quality. And / or, at least one lens of the optical lens 110 may have a freeform optical surface to correct aberrations. The aspherical surface is rotationally symmetric about the optical axis; the freeform surface may have no axis of symmetry, or it may be symmetric along one or two directions.

[0192] In some examples, the multiple lenses of the optical lens 110 are assembled using an active alignment (AA) process to ensure assembly accuracy.

[0193] In some examples, the optical surface of at least one lens of the optical lens 110 can be formed with a diffraction grating structure. By properly setting the diffraction grating structure, chromatic aberration can be reduced, and the size of the optical lens 110 can also be reduced.

[0194] In some examples, the optical lens 110 may also include a liquid lens (not shown) to enhance focusing and enable ultra-close-up shooting. The liquid lens is a structural component that uses a liquid as a lens and changes the focal length by altering the curvature of the liquid.

[0195] In some examples, at least one lens of the optical lens 110 can employ an irregular shape technique to reduce the size of the optical lens 110, making it more suitable for miniaturized electronic devices 1000 and increasing its applicability. The cutout can be achieved through an I-CUT process. Furthermore, because the lens height is reduced through the cutout, a larger aperture can be provided, thereby increasing the light transmission of the optical lens 110 and resulting in better image quality. Alternatively, irregular shapes can be used on the lens's structural support components, such as the lens barrel and spacers, to further reduce the size of the optical lens 110.

[0196] In some examples, the peripheral surface or support surface of at least one lens of the optical lens 110 may be blackened or roughened to eliminate stray light and improve image quality. Blackening can be achieved by coating or depositing a matte material such as black ink, or by applying a film. Roughening is primarily used to increase surface roughness.

[0197] like Figure 6 as well as Figure 7 As shown, the optical lens 110 also includes a second reflector 60 located on the image side of the fourth lens group 40, which is used to reflect or deflect light from the fourth lens group 40 to the image sensor 120.

[0198] This embodiment of the application uses an additional reflector at the rear end of the optical path to deflect the propagation angle of the light, thereby allowing for flexible adjustment of the placement orientation of the image sensor 120 and better space utilization. The light is deflected a total of 180 degrees twice, so the plane containing the image sensor 120 can be parallel to the display screen 300 of the electronic device 1000. This means the placement of the image sensor 120 is no longer limited by the thickness of the electronic device 1000, allowing for the placement of a larger image sensor, which improves image quality.

[0199] For example, the second reflector 60 can be a mirror or a prism.

[0200] like Figure 6 as well as Figure 7 As shown, the optical lens 110 may further include an aperture stop 121, which can 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 adjustment effect of the aperture stop 121 is better, which can improve the imaging quality of the optical lens 110. For example, the aperture stop 121 can be mounted on the end of the front lens group near the object side. In addition, the aperture stop 121 can also be mounted on other lenses of the front lens group, the third lens group 30, the fourth lens group 40, or other positions of the optical lens 110. The embodiments of this application do not strictly limit this.

[0201] The aperture stop 121 can be a spacer structure or a variable fan-blade structure; alternatively, the aperture stop 121 can be achieved through a surface coating process, such as forming the aperture stop 121 by coating a light-shielding material onto the lens. The position of the aperture stop 121 can be fixed or variable. For example, the position of the aperture stop 121 can be variable, allowing it to be adjusted according to focusing conditions to be positioned between different lenses.

[0202] The following presents specific optical data. Figure 6 The optical lens 110 shown is a specific embodiment of one possible solution.

[0203] Please refer to Tables 1, 2a, and 2b together. Table 1 is... Figure 6 The optical lens 110 shown in the diagram has the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in one possible embodiment. The thickness includes both the thickness of the lens itself and the distance between the lenses. Tables 2a and 2b are... Figure 6 The aspherical coefficients of each lens in one possible embodiment of the optical lens 110 shown.

[0204] Table 1:

[0205]

[0206]

[0207] Table 2a:

[0208] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 2.53E-06 1.09E-08 2.44E-10 -2.57E-12 8.56E-15 -1.36E-17 1.07E-20 -3.65E-24 S2 -1.71E-05 4.50E-08 -5.65E-11 4.06E-14 -1.79E-17 4.89E-21 -8.15E-25 7.56E-29 S3 9.53E-06 -1.36E-09 1.03E-09 -9.98E-12 3.68E-14 -6.89E-17 6.98E-20 -3.57E-23 S4 -3.50E-06 4.30E-08 -7.47E-11 6.14E-14 -2.90E-17 8.24E-21 -1.40E-24 1.32E-28 S5 -7.52E-04 3.18E-05 -2.13E-05 6.17E-06 -1.17E-06 1.54E-07 -1.52E-08 1.24E-09 S6 -1.72E-03 -1.99E-04 1.17E-04 -6.49E-05 2.23E-05 -5.19E-06 8.55E-07 -1.01E-07 S7 -8.29E-04 1.79E-05 -3.30E-05 1.25E-05 -4.47E-06 1.11E-06 -1.88E-07 2.31E-08 S8 -2.53E-03 3.59E-03 -8.63E-04 -1.59E-04 1.28E-04 -3.16E-05 4.31E-06 -3.46E-07 S9 -5.89E-03 3.58E-03 -8.35E-04 -4.93E-05 3.42E-05 5.64E-06 -4.56E-06 1.05E-06 S10 -2.68E-03 -2.34E-04 7.70E-04 -4.86E-04 1.71E-04 -4.05E-05 7.16E-06 -9.88E-07 S11 6.97E-02 -2.26E-02 4.40E-03 1.61E-03 -2.15E-03 1.19E-03 -4.27E-04 1.08E-04 S12 6.97E-02 -2.07E-02 5.60E-03 -1.75E-03 9.10E-04 -5.05E-04 2.11E-04 -6.32E-05 S13 7.40E-03 -7.20E-03 4.13E-03 -3.27E-03 2.57E-03 -1.54E-03 6.66E-04 -2.05E-04 S14 5.51E-03 -3.57E-03 -3.47E-03 4.70E-03 -2.90E-03 1.17E-03 -3.28E-04 6.59E-05 S15 4.81E-02 -2.04E-02 4.00E-03 2.16E-03 -2.43E-03 1.20E-03 -3.81E-04 8.45E-05 S16 3.91E-02 -1.48E-02 5.89E-03 -2.03E-03 5.28E-04 -1.00E-04 1.37E-05 -1.31E-06

[0209] Table 2b:

[0210]

[0211]

[0212] The aspherical surfaces in optical lens 110 in Table 1 can be defined using, but are not limited to, the following aspherical curve equations:

[0213]

[0214] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i For the i-th order aspherical coefficients, see Tables 2a and 2b.

[0215] Table 3:

[0216] parameter EFLG1 EFLG2 EFL1 EFL2 EFLG1 / EFL1 EFLG2 / EFL2 Fd numerical values 40mm 36mm 24mm 33mm 1.67 1.09 87.84mm parameter ImgH1 ImgH2 F1 F2 F2 / F1 Mag numerical values 12.5mm 6.88mm 83mm 207mm 2.49 0.27

[0217] 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 holographic height ImgH1, the equivalent focal length F1, and the magnification Mag at the closest focusing distance Fd of the optical lens 110 in the first imaging mode, and the effective focal length EFL2, the holographic height ImgH2, and the equivalent focal length F2 of the optical lens 110 in the second imaging mode. Among these, 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 the first lens group 10 or the second lens group 20 is used for imaging, the amount of light reflected by the movable reflector 52 into the rear lens group (i.e., the image sensor 120) does not differ significantly under different image stabilization conditions (i.e., different positions). In other words, it ensures that the image sharpness does not differ significantly under different image stabilization conditions, thus ensuring that the optical lens 110 always has excellent image quality. Furthermore, it also ensures that the optical lens 110 has a large zoom ratio.

[0218] Figure 8This is a schematic diagram of another camera module 100 in a first imaging mode provided in the embodiments of this application. Figure 9 yes Figure 8 The diagram shows the camera module 100 in the second imaging mode. The camera module 100 provided in this embodiment can be considered as described above. Figure 2 A more specific and lower-level implementation of the camera module 100 shown, compared to the aforementioned Figure 6 and Figure 7 In this embodiment, the image sensor 120 of the camera module 100 shown can also perform shake compensation.

[0219] Specifically, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. For example... Figure 8 As shown, when the movable reflector 52 is in the first position, the movable reflector 52, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. Figure 9 As shown, when the movable reflector 52 is in the second position, the movable reflector 52, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0220] Furthermore, 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 for shake compensation. In this way, the image stabilization of the movable reflector 52 (i.e., lens stabilization) combined with the image sensor 120 image stabilization can achieve better image stabilization, further ensuring shooting quality and improving the user's shooting experience.

[0221] In some examples, the image sensor 120 performs shake compensation to achieve optical image stabilization, which can be achieved by a stabilization motor driving the image sensor 120 along... Figure 8 The x-axis translation motion is used to achieve x-axis stabilization, or along... Figure 8 The image sensor 120 is moved along the y-axis for y-axis stabilization. Additionally, the stabilization motor can rotate the image sensor 120 within the plane formed by the x and y axes to achieve roll-axis stabilization. Thus, combined with the deflection-axis and pitch-axis stabilization of the movable reflector 52, the optical lens 110 achieves 5-axis stabilization, resulting in superior stabilization performance.

[0222] In this embodiment, the second reflector 60 includes a prism 61, or in other words, the second reflector 60 is a prism 61. Figure 10 This is a schematic diagram of the structure of the prism 61 provided in an embodiment of this application. Figures 8-10 As shown, the camera module 100 provided in this embodiment includes a rear lens group, a prism 61, and an image sensor 120.

[0223] The rear lens group has a third optical axis OA3, and multiple lenses of the rear lens group are arranged at intervals along the 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 enters the interior of the prism 61 through the incident surface 613, and then exits from the first reflecting surface 611 to the image sensor 120 after being reflected sequentially by the first reflecting surface 611 and the second reflecting surface 612. The photosensitive surface 122 of the image sensor 120 faces the first reflecting surface 611 and is tilted relative to the third optical axis OA3. The image sensor 120 is also used for shake compensation to achieve optical image stabilization.

[0224] According to the camera module 100 provided in the embodiments of this application, light from the rear lens group enters the prism 61 and is reflected twice, first by the first reflecting surface 611 and second by the second reflecting surface 612, before exiting from the first reflecting surface 611 to the image sensor 120. The photosensitive surface 122 of the image sensor 120 faces the first reflecting surface 611, and the photosensitive surface 122 is tilted relative to the third optical axis OA3. The image sensor 120 is typically 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 this embodiment is also used for shake compensation to achieve optical image stabilization. Since the image sensor 120 is tilted, the image stabilization motor (not shown in the figure) that drives the image sensor 120 to perform shake compensation can also be tilted. This saves space in the thickness direction of the module perpendicular to the third optical axis OA3. The thickness space will not be occupied by the image stabilization motor, which reduces the size of the camera module 100 in the thickness direction. This is beneficial to reducing the volume of the camera module 100 and thus brings convenience to the thin and light design of the electronic device 1000.

[0225] In this embodiment, the first reflecting surface 611 not only reflects light but also allows light to be transmitted from the first reflecting surface 611 to the image sensor 120. Specifically, when light enters the interior of the prism 61 through the incident surface 613, it first strikes the first reflecting surface 611 at an angle greater than the critical angle, undergoing total internal reflection (TIR) ​​on the first reflecting surface 611 and being reflected to the second reflecting surface 612. The light then continues to be reflected by the second reflecting surface 612 and is deflected back to the first reflecting surface 611. Due to the deflection effect of the second reflecting surface 612, the incident angle of the light from the second reflecting surface 612 is less than the critical angle, thus allowing the light to be transmitted from the first reflecting surface to the image sensor 120 instead of undergoing total internal reflection again.

[0226] In this embodiment, 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°, etc.

[0227] The above settings allow the image sensor 120 to be tilted as much as possible, saving thickness space. On the other hand, they also take into account the angle requirements of optical design, such as facilitating total internal reflection of light on the first reflective surface, and ensuring that light exits from the first reflective surface 611 at a perpendicular angle and enters the photosensitive surface 122 at a perpendicular angle. In other words, the above angle selection can also reduce the difficulty of optical design and improve image quality.

[0228] In some examples, the incident surface 613, the first reflecting surface 611, the second reflecting surface 612, and the photosensitive surface 122 are all planar. The first reflecting surface 611 and the photosensitive surface 122 can be arranged in parallel.

[0229] In some examples, the angle β between the first reflecting surface 611 and the second reflecting surface 612 can be an acute angle, for example, β is less than 45° or less than 35°, so that the second reflecting surface 612 can reflect the light back to the first reflecting surface 611.

[0230] In some examples, a reflective film layer may be deposited on the second reflective surface 612. This reflective film layer may be a metal reflective film layer such as nickel, aluminum, silver, or gold, thereby ensuring the reflection effect and preventing light from being transmitted from the second reflective surface 612 to the outside of the prism 61.

[0231] In some examples, the second reflecting surface 612 is parallel to the third optical axis OA3, the angle between the first reflecting surface 611 and the incident surface 613 is α, and the angle between the first reflecting surface 611 and the second reflecting surface 612 is β, where 0°≤|α-2β|≤10°, for example 0°≤|α-2β|≤5°.

[0232] Because the second reflecting surface 612 is parallel to the third optical axis OA3, the values ​​of α and 2β should be as close as possible. The smaller their absolute values, the closer the light can be to exiting the first reflecting surface 611 at a near-vertical angle. For example, when α = 2β, the light can exit at a 90-degree angle perpendicular to the first reflecting surface 611 and reach the image sensor 120. This configuration ensures that the light exits the first reflecting surface 611 at a vertical or near-vertical angle. Furthermore, by simply making the photosensitive surface 122 parallel to the first reflecting surface 611, the emitted light can enter the photosensitive surface 122 at a vertical or near-vertical angle, thus reducing the complexity of the optical design.

[0233] In some examples, α = 2β, and the angle between the second reflecting surface 612 and the incident surface 613 is γ, which can be an acute angle, a right angle, or an obtuse angle. For example, γ can be a 90° right angle, in which case α is 60° and β is 30°. Alternatively, γ can be a 97.5° obtuse angle, in which case α is 55° and β is 27.5°.

[0234] The structure or arrangement of the prism 61 and image sensor 120 provided in the embodiments of this application can also be applied to conventional periscope camera modules. Figure 11 This is a schematic diagram of another camera module 100 provided in an embodiment of this application. For example... Figure 11 As shown, the camera module 100 can be a conventional periscope camera module. The camera module 100 also includes a third reflector 63 located on the object side of the rear lens group, which is used to reflect light to the rear lens group and then into the tilted image sensor 120 through the prism 61.

[0235] In some examples, the third reflector 63 can be a mirror or a prism. The third reflector 63 can also be configured to perform shake compensation to achieve optical image stabilization of the lens.

[0236] In some examples, the object side of the third reflector 63 may also be provided with a front lens group, for example... Figure 11 The first lens group 10 in the middle, at this time the light first passes through the first lens group 10 and then enters the third reflector 63.

[0237] In some examples, such as Figure 11 As shown, in order to reduce the volume of the prism, the apex angle between the incident surface 613 and the first reflecting surface 611, and the apex angle between the first reflecting surface 611 and the second reflecting surface 612 can be cut off without affecting the optical imaging. At this time, the included angle between the incident surface 613 and the first reflecting surface 611, and the included angle between the first reflecting surface 611 and the second reflecting surface 612 are the included angles between the extension lines of the two surfaces.

[0238] In some examples, such as Figure 8 and Figure 9As shown, the rear lens group can also consist of only one lens group. In this case, the multiple lenses of the rear lens group can be fixedly arranged in the optical path along the direction from the object side to the image side. That is, the rear lens group can consist of only one lens group with a fixed position.

[0239] In some examples, combined with the foregoing Figures 4-7 In the illustrated embodiment, the rear lens group includes a third lens group 30 and a fourth lens group 40 arranged sequentially along the third optical axis OA3, wherein at least one of the third lens group 30 and the fourth lens group 40 is a focusing lens group movable along the third optical axis OA3. For example, the third lens group 30 is a focusing lens group, while the fourth lens group 40 is a fixed lens group.

[0240] In some examples, the rear lens group may also include three, four, five, or more lens groups arranged sequentially along the third optical axis OA3, at least one of which is a focusing lens group, while the rest are fixed lens groups. For example, the rear lens group may also include a sixth lens group (not shown in the figure), a third lens group 30, and a fourth lens group 40 arranged sequentially along the third optical axis OA3, wherein the sixth lens group and the fourth lens group 40 are fixed lens groups, while the third lens group 30 located in the middle is a movable focusing lens group.

[0241] The following presents specific optical data. Figure 8 The optical lens 110 shown is a specific embodiment of one possible solution.

[0242] Please refer to Tables 4, 5a, and 5b together. Table 4 is... Figure 8 The optical lens 110 shown in the diagram has the radius of curvature, thickness, refractive index (Nd), and Abbe number of each lens in one possible embodiment. The thickness includes both the thickness of the lens itself and the distance between the lenses. Tables 5a and 5b are... Figure 8 The aspherical coefficients of each lens in one possible embodiment of the optical lens 110 shown.

[0243] Table 4:

[0244]

[0245] Table 5a:

[0246]

[0247]

[0248] Table 5b:

[0249] Face number A20 A22 A24 A26 A28 A30 S1 2.22E-28 S2 -3.00E-33 S3 1.10E-14 -1.10E-16 S4 -1.68E-15 S5 -9.00E-11 5.60E-12 -2.63E-13 8.27E-15 -1.51E-16 1.21E-18 S6 8.42E-09 -4.95E-10 1.99E-11 -5.19E-13 7.92E-15 -5.36E-17 S7 -2.15E-09 1.50E-10 -7.44E-12 2.44E-13 -4.70E-15 3.99E-17 S8 1.38E-08 1.31E-10 -4.57E-11 2.36E-12 -5.67E-14 5.50E-16 S9 -1.35E-07 1.11E-08 -5.96E-10 2.02E-11 -3.97E-13 3.43E-15 S10 1.07E-07 -8.70E-09 5.08E-10 -1.98E-11 4.56E-13 -4.69E-15 S11 -1.97E-05 2.56E-06 -2.32E-07 1.39E-08 -4.95E-10 7.95E-12 S12 1.35E-05 -2.07E-06 2.22E-07 -1.58E-08 6.72E-10 -1.29E-11 S13 4.52E-05 -7.06E-06 7.64E-07 -5.44E-08 2.29E-09 -4.33E-11 S14 -9.54E-06 9.80E-07 -6.93E-08 3.19E-09 -8.48E-11 9.73E-13 S15 -1.34E-05 1.51E-06 -1.19E-07 6.17E-09 -1.90E-10 2.64E-12 S16 8.02E-08 -2.36E-09 -5.44E-11 7.98E-12 -2.95E-13 4.05E-15

[0250] The aspherical surfaces in optical lens 110 in Table 4 can be defined using, but are not limited to, the following aspherical curve equations:

[0251]

[0252] Where z is a point on the aspherical surface at a distance r from the optical axis, and its relative distance to the tangent plane at the intersection point on the optical axis; r is the perpendicular distance between a point on the aspherical curve and the optical axis; c is the curvature; k is the cone coefficient; α i For the i-th order aspherical coefficients, see Tables 5a and 5b.

[0253] 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 holographic height ImgH1, the equivalent focal length F1, and the magnification Mag at the closest focusing distance Fd of the optical lens 110 in the first imaging mode, and the effective focal length EFL2, the holographic height ImgH2, and the equivalent focal length F2 of the optical lens 110 in the second imaging mode. Among these, EFL2 > EFL1. Calculations show 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 the first lens group 10 or the second lens group 20 is used for imaging, the amount of light reflected by the movable reflector 52 into the rear lens group (i.e., the image sensor 120) does not differ significantly under different image stabilization conditions (i.e., different positions). In other words, it ensures that the image sharpness does not differ significantly under different image stabilization conditions, thus ensuring that the optical lens 110 always has excellent image quality. Furthermore, it also ensures that the optical lens 110 has a large zoom ratio.

[0254] Table 6:

[0255] parameter EFLG1 EFLG2 EFL1 EFL2 EFLG1 / EFL1 EFLG2 / EFL2 Fd numerical values 35.13mm 37.60mm 23.47mm 32mm 1.50 1.18 70mm parameter ImgH1 ImgH2 F1 F2 F2 / F1 Mag numerical values 12.5mm 8mm 81.2mm 173.1mm 2.13 0.48

[0256] Figure 12 This is a schematic diagram of another camera module 100 in a first imaging mode provided in the embodiments of this application. Figure 13 Figure 12 The diagram shows the camera module 100 in the second imaging mode. The camera module 100 provided in this embodiment can be considered as described above. Figure 2 A more specific and lower-level implementation of the camera module 100 shown, compared to the aforementioned Figure 6 and Figure 7 The camera module 100 shown in this embodiment, the light guide module 50 further includes a first reflector 51.

[0257] Specifically, such as Figure 12and Figure 13 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a movable reflector 52. The first reflector 51 is located between the second lens group 20 and the movable reflector 52, and is used to reflect the second light rays to the movable reflector 52. The movable reflector 52 can move (e.g., rotate) between a first position and a second position. Figure 12 When the movable reflector 52 is in the first position shown, it reflects the first light ray from the first lens group 10 to the third lens group 30, at which time the optical lens 110 enters the first imaging mode; when the movable reflector 52 is in the third position ... Figure 13 In the second position shown, the movable reflector 52 reflects the second light rays from the second lens group 20 to the third lens group 30, at which point the optical lens 110 enters the second imaging mode. Since the first lens group 10 and the second lens group 20 have different focal lengths, controlling the movable reflector 52 to deflect between the first and second positions changes the effective focal length of the optical lens 110, thus achieving optical zoom.

[0258] When the movable reflector 52 is rotated to Figure 12 In the first position shown, the optical lens 110 operates in the first imaging mode. The first light ray from the first lens group 10 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The second light ray from the second lens group 20 cannot enter the third lens group 30. For example, the second light ray 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 ray. In this case, the second light ray can be directed to other areas inside the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the first optical axis OA1 and the third optical axis OA3, while the second optical axis OA2 and the third optical axis OA3 are disconnected.

[0259] When the movable reflector 52 is moved to Figure 13 In the second position shown, the optical lens 110 operates in the second imaging mode. The second light ray from the second lens group 20 is reflected by the movable reflector 52 to the third lens group 30, and then enters the image sensor 120 through the fourth lens group 40. The first light ray from the first lens group 10 cannot enter the third lens group 30. For example, the first light ray 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 ray. In this case, the first light ray can be directed to other areas inside the electronic device 1000 and be absorbed or consumed. In other words, at this time, the movable reflector 52 connects the second optical axis OA2 and the third optical axis OA3, while the first optical axis OA1 and the third optical axis OA3 are disconnected from each other.

[0260] In some examples, such as Figure 12 As shown, when the movable reflector 52 is in the first position, its reflective plane is parallel to the second optical axis OA2, and forms a 45° angle with the first optical axis OA1. In this position, the movable reflector 52 reflects the first light ray to the third lens group 30 without reflecting the second light ray. When the movable reflector 52 is in the second position, its reflective plane is again parallel to the first optical axis OA1, and forms a 45° angle with the second optical axis OA2. In this position, the movable reflector 52 reflects the second light ray to the third lens group 30 without reflecting the first light ray.

[0261] In some examples, the movable reflector 52 can be driven to rotate between the first and second positions by any power component such as a voice coil motor, piezoelectric motor, shape memory alloy motor, or stepper motor.

[0262] For example, the first reflector 51 can be a reflector or a prism.

[0263] Compared to the above Figure 6 and Figure 7 The camera module 100 shown in this embodiment uses a light guide module 50 to reflect the second light to a movable reflector 52 by setting a first reflector 51. This reduces the movement range of the movable reflector 52, so that the movable reflector 52 only needs to deflect the reflection angle to switch between the first light and the second light, without having to move over a large range. This simplifies the drive design and helps to reduce the size of the lens or module.

[0264] In some examples, the first reflector 51 can also be configured as a movable reflector, capable of moving under the drive of a power component. For example, when the movable reflector 52 is moved to... Figure 12In the first position shown, the first light ray 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 moved to reflect the second light ray from the second lens group 20 to an area outside the movable reflector 52. The second light ray will not reach the movable reflector 52, meaning the movable reflector 52 will not reflect the second light ray, and the second light ray will not enter the third lens group 30. Under the reflection of the first reflector 51, the second light ray can be directed to other areas inside the electronic device 1000 and absorbed or consumed. With this configuration, the movable reflector 52 can reflect the first light ray without needing to consider avoiding the second light ray, increasing the freedom of optical path design and reducing its complexity. Furthermore, the second light ray is not introduced during imaging with the first light ray, effectively preventing interference from the second light ray on the imaging process, resulting in better anti-interference and improved imaging quality. For example, 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 image through the first light and the second light.

[0265] In this embodiment, the movable reflector 52 is also used for shake compensation to achieve optical image stabilization. For example... Figure 12 As shown, when the movable reflector 52 is in the first position, it can perform optical image stabilization on the optical lens 110 operating in the first imaging mode under the drive of the image stabilization motor. It should be noted that at this time, while performing shake compensation, the movable reflector 52 should not introduce second light rays into the third lens group 30 or the image sensor 120, to avoid affecting image quality due to the introduction of stray light.

[0266] like Figure 13 As shown, when the movable reflector 52 is in the second position, it can perform optical image stabilization on the optical lens 110 operating in the second imaging mode under the drive of the image stabilization motor. It should be noted that at this time, while performing shake compensation, the movable reflector 52 should not introduce first light rays into the third lens group 30 or the image sensor 120, to avoid affecting image quality due to the introduction of stray light.

[0267] In some examples, the first reflector 51 is also used for shake compensation to achieve optical image stabilization. For example, the image stabilization motor can drive the first reflector 51 to translate or rotate for shake compensation. In this way, the image stabilization of the movable reflector 52 (i.e., lens image stabilization) combined with the image stabilization of the first reflector 51 can achieve better image stabilization effect, further ensuring the shooting quality of the optical lens 110 in the second imaging mode and improving the user's shooting experience.

[0268] Figure 14This is a schematic diagram of another camera module 100 in a first imaging mode provided in the embodiments of this application. Figure 15 yes Figure 14 The diagram shows the structure of the camera module 100 in the second imaging mode. Figure 14 and Figure 15 As shown, in this embodiment, the light guide module 50 also includes a first reflector 51 and a movable reflector 52, but the functions of the first reflector 51 and the movable reflector 52 are the same as described above. Figure 12 and Figure 13 The corresponding components in the camera module 100 shown have different functions.

[0269] Specifically, such as Figure 14 and Figure 15 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a movable reflector 52. The first reflector 51 is located between the second lens group 20 and the movable reflector 52, and is used to reflect the second light rays to the third lens group 30. The movable reflector 52 can move between a first position and a second position (e.g., rotate about its left end as an axis). When the movable reflector 52 is rotated to... Figure 14 In the first position shown, the movable reflector 52 reflects the first light ray from the first lens group 10 to the third lens group 30 and blocks the second light ray, preventing the second light ray 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... Figure 15 In the second position shown, the movable reflector 52 avoids the second light ray, which smoothly reaches the third lens group 30 under the reflection of the first reflector 51, while the first light ray 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 and second positions, the effective focal length of the optical lens 110 can be changed, thus realizing the optical zoom function.

[0270] When the movable reflector 52 is rotated to Figure 14 In the first position shown, the optical lens 110 operates in the first imaging mode. The first light rays from the first lens group 10 are reflected by the movable reflector 52 to the third lens group 30, and then enter the image sensor 120 through the fourth lens group 40. The second light rays from the second lens group 20 are blocked by the movable reflector 52 and cannot enter the third lens group 30. For example, an opaque coating can be provided on the back of the movable reflector 52 to absorb the second light rays, or the second light rays can be reflected to an area outside the third lens group 30. In this case, the second light rays can be directed to other areas inside the electronic device 1000 and be absorbed or consumed.

[0271] When the movable reflector 52 is moved to Figure 15 In the second position shown, 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 enters the image sensor 120 through the fourth lens group 40. 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 directed to other areas inside the electronic device 1000 and be absorbed or consumed.

[0272] In some examples, such as Figure 14 and Figure 15 As shown, the left end of the movable reflector 52 can be set as a pivot, and the movable reflector 52 can rotate around this left end, for example, located at... Figure 14 The movable reflector 52 in the first position rotates 45° counterclockwise around its left end as an axis to achieve the desired effect. Figure 15 The second position. When the movable reflector 52 is in the second position, the movable reflector 52 is adjacent to the first lens group 10, and the reflecting surface is parallel to the lens plane of the first lens group 10. Further, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise about the left side as an axis.

[0273] Figure 16 yes Figure 14 The diagram shows another example of the camera module 100 in a second imaging mode. In some examples, such as... Figure 14 and Figure 16 As shown, the right end of the movable reflector 52 can also be set as a pivot, and the movable reflector 52 can rotate around this right end, for example, located at... Figure 14 The movable reflector 52 in the first position rotates 45° counterclockwise around its right end as an axis to achieve the desired effect. Figure 16 The second position. 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. Further, the movable reflector 52 can be switched from the second position to the first position by rotating 45° clockwise about its right end.

[0274] In this embodiment, the first reflector 51 and the movable reflector 52 can also be used for shake compensation to achieve optical image stabilization.

[0275] like Figure 14As shown, when the movable reflector 52 is in the first position, driven by the image stabilization motor, it 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 second light rays into the third lens group 30 or the image sensor 120; that is, it should ensure that the blocking effect on second light rays is not affected, and avoid affecting image quality due to the introduction of stray light. Figure 15 As shown, when the movable reflector 52 is in the second position, the first reflector 51, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0276] Figure 17 This is a schematic diagram of another camera module 100 in a first imaging mode provided in the embodiments of this application. Figure 18 yes Figure 15 The diagram shows the structure of the camera module 100 in the second imaging mode. Figure 17 and Figure 18 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable reflective mirror 53.

[0277] Specifically, such as Figure 17 and Figure 18 As shown, in this embodiment, the light guide module 50 includes a first reflector 51 and a controllable transmission-reflection mirror 53. The first reflector 51 is located between the second lens group 20 and the controllable transmission-reflection mirror 53, and is used to reflect the second light rays to the third lens group 30. The controllable transmission-reflection mirror 53 has a transmission mode and a reflection mode, and can switch between these two modes.

[0278] When the controllable mirror 53 is controlled to enter as... Figure 17 In the reflection mode shown, the controllable mirror 53 reflects the first light ray from the first lens group 10 to the third lens group 30, and reflects the second light ray from the second lens group 20 to an area outside the third lens group 30, i.e., the second light ray cannot reach the third lens group 30. At this time, the optical lens 110 enters the first imaging mode; when the controllable mirror 53 is controlled to enter the first imaging mode... Figure 18 In the transmission mode shown, the second light ray passes through the controllable reflective mirror 53 and enters the third lens group 30, while the first light ray passes through the controllable reflective mirror 53 and enters an area outside the third lens group 30, meaning the first light ray cannot reach 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 controllable reflective mirror 53 to switch between the reflection mode and the transmission mode, the effective focal length of the optical lens 110 can be changed, thus realizing the optical zoom function.

[0279] When the controllable mirror 53 is controlled to enter as... Figure 17 In the reflection mode shown, the optical lens 110 operates in the first imaging mode. The first light ray from the first lens group 10 is reflected by the controllable reflective mirror 53 to the third lens group 30, and then sequentially passes through the fourth lens group 40 and the second reflector 60 before entering the image sensor 120. The second light ray from the second lens group 20 is blocked by the controllable reflective mirror 53 (reflected in other directions) and cannot enter the third lens group 30. For example, the second light ray is reflected to other areas inside the electronic device 1000 and is absorbed or consumed.

[0280] When the controllable mirror 53 is controlled to enter as... Figure 18 In the transmission mode shown, the optical lens 110 operates in the second imaging mode. The second light rays pass through the controllable transflector 53 and enter the third lens group 30, then sequentially pass through the fourth lens group 40 and the second reflector 60 before entering the image sensor 120. Meanwhile, the first light rays pass through the controllable transflector 53 and enter areas other than the third lens group 30, such as other areas inside the electronic device 1000, and are absorbed or consumed.

[0281] In some examples, the controllable mirror 53 can be switched between reflection and transmission modes by changing the magnitude of the current or voltage applied to it. Alternatively, the mode of the controllable mirror 53 can be controlled by powering it on or off. For example, when there is no electrical signal, the controllable mirror 53 is in reflection mode, i.e., when no power is applied, the controllable mirror 53 is in reflection mode. When an electrical signal is input, the controllable mirror 53 is in transmission mode, i.e., when powered on, the controllable mirror 53 is in transmission mode. The electrical signal can be a current signal or a voltage signal.

[0282] For example, the controllable reflective mirror 53 may include an electro-liquid crystal material layer.

[0283] In this embodiment, the first reflector 51 and the controllable reflective mirror 53 can also be used for shake compensation to achieve optical image stabilization.

[0284] like Figure 17 As shown, when the controllable mirror 53 is in reflection mode, driven by the image stabilization motor, it can perform optical image stabilization on the optical lens 110 operating in the first imaging mode. It should be noted that while performing shake compensation, the controllable mirror 53 should not introduce second light rays into the third lens group 30 or the image sensor 120; that is, it should ensure that the blocking effect on second light rays is not affected, and avoid affecting image quality due to the introduction of stray light. Figure 18 As shown, when the controllable mirror 53 is in transmission mode, the first reflector 51, driven by the image stabilization motor, can perform optical image stabilization on the optical lens 110 operating in the second imaging mode.

[0285] Figure 19 This is a schematic diagram of another camera module 100 provided in the embodiments of this application, wherein, Figure 19 Part (a) is a schematic diagram of the camera module 100 in the second imaging mode. Figure 19 Part (b) is a schematic diagram of the camera module 100 in the first imaging mode. The camera module 100 provided in this embodiment can be considered as described above. Figure 2 ,as well as Figure 6 and Figure 7 A more specific and lower-level implementation of the camera module 100 shown is, for ease of understanding, described above, of the rear lens group, second reflector 60, and image sensor 120 located on the image side of the movable reflector 52 (light guide module 50). Figure 19 The text is not shown in the original, but can be combined with the following: Figure 19 The structural details of the optical lens 110 will continue to be introduced.

[0286] like Figure 19 As shown in this embodiment, the light guide module 50 includes a movable reflector 52, or in other words, the movable reflector 52 is the aforementioned light guide module 50. The movable reflector 52 can be a prism (e.g., a right-angle prism). The movable reflector 52 can switch positions under the drive of the driving member 90. The driving member 90 can be any power component such as a voice coil motor, piezoelectric motor, electric motor, or cylinder.

[0287] The movable reflector 52 is located between the front lens group and the rear lens group (not shown in the figure) and can move (e.g., translate) between a first position and a second position. Figure 19 When the movable reflector 52 is in the first position shown in section (b), it reflects the first light ray from the first lens group 10 to the rear lens group, at which point the optical lens 110 enters the first imaging mode. When the movable reflector 52 is located in... Figure 19 In the second position shown in section (a), the movable reflector 52 reflects the second light rays from the second lens group 20 to the rear lens group, at which point the optical lens 110 enters the second imaging mode. Since the first lens group 10 and the second lens group 20 have different focal lengths, controlling the movable reflector 52 to switch between the first and second positions changes the effective focal length of the optical lens 110, thus achieving optical zoom.

[0288] In some examples, the driving component 90 can drive the movable reflector 52 to slide between a first position and a second position. For example, the movable reflector 52 is slidably mounted on a slide rod or groove connecting the first and second positions via a mounting component such as a mounting base 91. Driven by the driving component 90, it can slide on the slide rod or groove, thereby ensuring that the movable reflector 52 can quickly (e.g., within 30 milliseconds) and stably switch positions. For example, the bottom of the mounting base 91 is provided with a U-shaped or V-shaped groove, which is fitted onto the slide rod. The movable reflector 52 is fixedly mounted on the mounting base 91. The movable reflector 52 can achieve long-stroke, fast, and stable position switching between the first and second positions through the sliding groove and slide rod.

[0289] In this embodiment, the optical lens 110 further includes a light-shielding component, which is any component capable of blocking light and can be constructed in any shape. For example, the light-shielding component can be... Figure 19 The light-shielding plate 80 in the light-shielding device can also be a light-shielding curtain or other components. The light-shielding device is configured such that: when the movable reflector 52 is moved to the second position, the movable reflector 52 reflects the second light, and at this time the light-shielding device 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 at this time the light-shielding device blocks the second light to prevent the second light from entering the movable reflector 52.

[0290] With the above settings, the optical lens 110 will not introduce a second ray when imaging with the first ray (i.e., operating in the first imaging mode), effectively avoiding interference from the second ray on the imaging. Similarly, the optical lens 110 will not introduce the first ray when imaging with the second ray (i.e., operating in the second imaging mode), effectively avoiding interference from the first ray on the imaging. This avoids interference between different light rays and prevents light from different front lens groups from simultaneously entering the image sensor 120, thus preventing ghosting on the image sensor 120. In other words, it avoids introducing stray light, which is beneficial for improving image quality.

[0291] In some examples, the light-shielding member can block only the first light beam. That is, when the movable reflector 52 is moved to the second position, the movable reflector 52 reflects the second light beam, and at this time, the light-shielding member blocks the first light beam to prevent the first light beam from entering the movable reflector 52. However, when the movable reflector 52 is moved to the first position to reflect the first light beam, the light-shielding member does not or does not need to block the second light beam. (The following text...) Figure 22 The illustrated examples will further illustrate this situation.

[0292] In some examples, the light-shielding member can block only the second light ray. That is, when the movable reflector 52 is moved to the first position, the movable reflector 52 reflects the first light ray, and at this time the light-shielding member blocks the second light ray to prevent the second light ray from entering the movable reflector 52. However, when the movable reflector 52 is moved to the second position to reflect the second light ray, the light-shielding member does not or does not need to block the first light ray.

[0293] In some examples, the light-blocking member can block both the first and second light rays. That is, when the movable reflector 52 is moved to the second position, it reflects the second light ray, and the light-blocking member blocks the first light ray to prevent it from entering the movable reflector 52. Conversely, when the movable reflector 52 is moved to the first position, it reflects the first light ray, and the light-blocking member blocks the second light ray to prevent it from entering the movable reflector 52.

[0294] like Figure 19 As shown in the embodiment of this application, the light-shielding member includes a light-shielding plate 80 with a variable position. The light-shielding plate 80 can switch between a third position and a fourth position, for example, by translation, so as to block the first light or the second light.

[0295] like Figure 19 As shown in section (a), when the movable reflector 52 is moved to the second position, the optical lens 110 operates in the second imaging mode. The movable reflector 52 reflects the second light rays from the second lens group 20. At this time, the light shield 80 is moved to the third position to block the first light rays, ensuring that the first light rays cannot enter the movable reflector 52. This prevents stray light from entering the image sensor 120 and improves the imaging quality of the optical lens 110.

[0296] like Figure 19 As shown in section (b), when the movable reflector 52 is moved to the first position, the optical lens 110 operates in the first imaging mode. The movable reflector 52 reflects the first light rays from the first lens group 10. At this time, the light shield 80 is moved to the fourth position to block the second light rays, ensuring that the second light rays cannot enter the movable reflector 52. This prevents stray light from entering the image sensor 120 and improves the imaging quality of the optical lens 110.

[0297] This embodiment of the application achieves the blocking of the first or second light beam by setting a light-shielding plate 80 with a variable position, which enables precise control of the light path and ensures a good blocking effect. Furthermore, the implementation method is simple and easy to implement, which helps save lens space and implementation costs, and it has high operational stability, thus improving the reliability of the optical lens 110.

[0298] like Figure 19 As shown, the third position is located on the image side of the first lens group 10. When the light-shielding plate 80 is in the third position, its surface faces the first lens group 10 to achieve a better light-shielding effect. The fourth position is located on the image side of the second lens group 20. When the light-shielding plate 80 is in the fourth position, its surface faces the second lens group 20 to achieve a better light-shielding effect. In other examples, the third position can also be located on the object side of the first lens group 10, and the fourth position can be located on the object side of the second lens group 20.

[0299] In some examples, the material of the light-shielding plate 80 can be various matte materials, frosted plastic, or matte metal, and the shape of the light-shielding plate 80 can be circular, elliptical, or rectangular, etc., which are not limited in this application.

[0300] In some examples, the light-shielding plate 80 and the movable reflector 52 may also be driven by two different actuators.

[0301] In some examples, the light-shielding plate 80 and the movable reflector 52 can be driven synchronously by the same drive unit, for example, both can be driven by the drive unit 90.

[0302] With the above settings, the same driving component can be reused to switch the positions of the light shield 80 and the movable reflector 52. That is, there is no need to set up an additional driving component to drive the light shield 80, which helps to save lens space and implementation costs. Furthermore, by using the same driving component to achieve synchronous driving, it is beneficial to quickly respond to the user's switching operation, shorten the time required for switching, and avoid affecting the user experience due to inconsistent position switching.

[0303] In some examples, the drive unit 90 is simultaneously driven by the light-shielding plate 80 and the movable reflector 52. The drive unit 90 can achieve synchronous driving of the light-shielding plate 80 and the movable reflector 52 through mechanisms such as belts, ropes, pulleys, rollers, connecting rods, and gear rack mechanisms.

[0304] Figure 20 This is a schematic diagram of another camera module 100 provided in the embodiments of this application, wherein, Figure 20 Part (a) is a schematic diagram of the camera module 100 in the second imaging mode. Figure 20 Part (b) is a schematic diagram of the camera module 100 in the first imaging mode. Figure 21 This is a schematic diagram of the structure of a light-shielding plate 80 provided in an embodiment of this application.

[0305] like Figure 20 and Figure 21 As shown, relative to the aforementioned Figure 19In the illustrated embodiment, the light-shielding plate 80 is fixedly connected to the movable reflector 52, meaning their positions are relatively fixed. For example, the light-shielding plate 80 is fixedly mounted on the 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-leaking area 81, which corresponds to the position of the movable reflector 52, allowing light to pass through and enter the movable reflector 52. This light-leaking area 81 can be a through-hole, or it can be a notch structure located at the edge of the light-shielding plate 80.

[0306] like Figure 20 As shown in part (a), when the movable reflector 52 is moved to the second position, the light shield 80 is moved to the third position simultaneously. At this time, the light leakage area 81 on the light shield 80 is opposite to the second lens group 20. The second light rays enter the movable reflector 52 through the light leakage area 81. The movable reflector 52 reflects the second light rays, while the non-light leakage area of ​​the light shield 80 (i.e., the area located to the right of the light leakage area 81) blocks the first light rays.

[0307] like Figure 20 As shown in part (b), when the movable reflector 52 is moved to the first position, the light shield 80 is moved to the fourth position simultaneously. At this time, the light leakage area 81 on the light shield 80 is opposite to the first lens group 10. The first light rays enter the movable reflector 52 through the light leakage area 81, and the movable reflector 52 reflects the first light rays. Meanwhile, the other non-light leakage areas of the light shield 80 (i.e., the areas located to the left of the light leakage area 81) block the second light rays.

[0308] This embodiment of the application fixes the light-shielding plate 80 and the movable reflector 52 together. This allows for synchronous driving of the two components using a single driving component (e.g., driving component 90), saving lens space and implementation costs, facilitating rapid response to user switching operations, and shortening the switching time. By providing a light-leaking area 81 on the light-shielding plate 80, opposite to the position of the movable reflector 52, the optical path can be selected by changing the position of the light-leaking area 81. Furthermore, due to the presence of the light-leaking area 81, the light-shielding plate 80 can be positioned between the front lens group and the movable reflector 52, and the light-shielding plate 80 can span from one side of the movable reflector 52 to the other, facilitating a fixed connection between the light-shielding plate 80 and the movable reflector 52 and simplifying their connection structure. For example, the light-shielding plate 80 can be fixedly mounted on the mounting base 91 of the movable reflector 52, thereby achieving a fixed connection between the two.

[0309] In some examples, the light-leaking area 81 can be a through-hole structure or a notch structure located at the edge of the light-shielding plate 80. For example... Figure 21 As shown, the light-shielding plate 80 has a rectangular structure, and the light-leaking area 81 is a through-hole structure located in the middle of the light-shielding plate 80. The shape of the light-leaking area 81 can be rectangular, circular, elliptical, or any other arbitrary shape. In this embodiment, the movable reflector 52 is a prism, and the light-shielding plate 80 is fixedly stacked (attached) on the light-incident surface of the movable reflector 52 (i.e., the prism), with the light-leaking area 81 facing the light-incident surface. The shape of the light-leaking area 81 can be the same as the shape of the light-incident surface; for example, both the light-leaking area 81 and the light-incident surface can be rectangular.

[0310] Figure 22 This is a schematic diagram of another camera module 100 provided in the embodiments of this application, wherein, Figure 22 Part (a) is a schematic diagram of the camera module 100 in the second imaging mode. Figure 22 Part (b) is a schematic diagram of the camera module 100 in the first imaging mode. Figure 23 This is a schematic diagram of another light-shielding plate 80 provided in an embodiment of this application. For example... Figure 22 and Figure 23 As shown, relative to the aforementioned Figure 20 and Figure 21 In the embodiment shown, the light leakage area 81 is set on one side edge adjacent to the light shield 80, and the light shield 80 is only used to block the first light and cannot block the second light.

[0311] like Figure 22 As shown in part (a), when the movable reflector 52 is moved to the second position, the light shield 80 is moved to the third position simultaneously. At this time, the light leakage area 81 on the light shield 80 is opposite to the second lens group 20. The second light rays enter the movable reflector 52 through the light leakage area 81. The movable reflector 52 reflects the second light rays, while the non-light leakage area of ​​the light shield 80 (i.e., the area located to the right of the light leakage area 81) blocks the first light rays.

[0312] like Figure 22 As shown in part (b), when the movable reflector 52 is moved to the first position, the light shield 80 is moved to the fourth position simultaneously. At this time, the light leakage area 81 on the light shield 80 is opposite to the first lens group 10. The first light rays enter the movable reflector 52 through the light leakage area 81, and the movable reflector 52 reflects the first light rays. However, since the light shield 80 and the second lens group 20 are offset from each other at this time, the second light rays cannot be blocked.

[0313] Given the complex internal structure of lenses, not all front lens elements may require light blocking. For example, in... Figure 22In the first imaging mode shown in part (b), since the light rays incident from the second lens group 20 are located behind the movable reflector 52, they are unlikely to reach the reflecting surface, and the presence of the mounting base 91 also provides some light blocking. Therefore, there is no need for additional blocking design for the second light rays. Figure 22 In the second imaging mode shown in part (a), the reflective surface of the movable reflector 52 faces the first lens group 10. The first light rays incident from the first lens group 10 may enter the reflective surface of the movable reflector 52 due to diffuse reflection, thus requiring a design to block the first light rays. Therefore, in this embodiment, the light-shielding plate 80 is only used to block the first light rays, without blocking the second light rays. This shortens the overall length of the light-shielding plate 80, which is beneficial for miniaturizing the camera module 100.

[0314] Figure 24 This is a schematic diagram of another camera module 100 provided in an embodiment of this application. Wherein, Figure 24 Part (a) is a schematic diagram of the camera module 100 in the second imaging mode. Figure 24 Part (b) is a schematic diagram of the camera module 100 in the first imaging mode. In this embodiment, different areas of the light-shielding plate 80 have a light-transmitting mode and a light-shielding mode, and can switch between these two modes.

[0315] like Figure 24 As shown in part (a), 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 rays to pass through the second region and strike the movable reflector 52. The light-shielding plate 80, corresponding to the first region of the first lens group 10, switches to a light-shielding mode to block the first light rays. This prevents the first light rays from entering the image sensor 120 as stray light, thereby improving the imaging quality of the optical lens 110.

[0316] like Figure 24 As shown in part (b), 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, and the first light rays pass through the first region and hit the movable reflector 52. The light-shielding plate 80 corresponding to the second region of the second lens group 20 switches to a light-shielding mode to block the second light rays. This prevents the second light rays from entering the image sensor 120 as stray light, thereby improving the imaging quality of the optical lens 110.

[0317] Through the above settings, the light-blocking effect of different areas can be achieved by changing the light transmission properties of different areas. At this time, the light-blocking plate 80 is stationary and does not need to be moved, so there is no need for drive design, which helps to simplify the internal structure of the module.

[0318] In some examples, the light-transmitting mode and the light-blocking mode of a region can be switched by changing the magnitude of the current or voltage applied to different regions of the light-blocking plate 80, or the mode of different regions can be controlled by powering on and off. In some cases, the first region and the second region of the light-blocking plate 80 can be regarded as two independent light-blocking units that can be controlled separately. For example, for the first region, the first region is in light-blocking mode when there is no electrical signal, that is, when no power is applied, the first region is in light-blocking mode. When an electrical signal is input, the first region is in light-transmitting state, that is, when power is applied, the first region is in light-transmitting mode. Here, the electrical signal can be a current signal or a voltage signal.

[0319] For example, the first and second regions of the light-shielding plate 80 include an electro-liquid crystal material layer that can be independently controlled.

[0320] For example, the light-blocking mode here can be the aforementioned reflection mode, that is, the light is blocked by reflecting the light to other areas.

[0321] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An optical lens, characterized in that, include: The optical lens comprises a first lens group (10), a second lens group (20), and a light guide module (50), wherein 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 disposed 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 a different effective focal length in the first imaging mode and in the second imaging mode. The light guide module (50) is also used for jitter compensation to achieve optical image stabilization; 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. ELFG1, ELFG2, ELF1 and ELF2 satisfy the following relationship: EFLG1 / EFL1>0.5, EFLG2 / EFL2>1.0, and EFL1<EFL2.

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

3. The optical lens according to claim 2, characterized in that, The rear lens group includes a third lens group (30) and a fourth lens group (40) arranged sequentially along the object side to the image side, and at least one of the third lens group (30) and the fourth lens group (40) is a focusing lens group that can move along the optical axis.

4. The optical lens according to claim 3, characterized in that, In the third lens group (30) and the fourth lens group (40), the focal length of one lens group is positive and the focal length of the other lens group is negative.

5. The optical lens according to claim 3, characterized in that, The optical lens also includes a second reflector (60) located on the image side of the fourth lens group (40), the second reflector (60) being used to reflect light from the fourth lens group (40) to the image sensor (120).

6. The optical lens according to claim 5, characterized in that, The second reflector (60) includes a prism (61) having 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 fourth lens group (40) enters the interior of the prism (61) through the incident surface (613), and then exits from the first reflecting surface (611) to the image sensor (120) after being reflected by the first reflecting surface (611) and the second reflecting surface (612) in sequence.

7. The optical lens according to any one of claims 1-6, characterized in that, The focal lengths of the first lens group (10) and the second lens group (20) are different.

8. The optical lens according to any one of claims 1-6, characterized in that, In the first imaging mode, the equivalent focal length of the optical lens is F1, and in the second imaging mode, the equivalent focal length of the optical lens is F2. F1 and F2 satisfy the following relationship: 1 < F2 / F1 < 10.

9. The optical lens according to any one of claims 1-6, characterized in that, The light guide module (50) includes: The movable reflector (52) can move between a first position and a second position. When it is in the first position, the movable reflector (52) is used to reflect the first light to the image sensor (120). When it is in the second position, the movable reflector (52) is used to reflect the second light to the image sensor (120). The movable reflector (52) is also used for jitter compensation to achieve optical image stabilization.

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

11. The optical lens according to any one of claims 1-6, characterized in that, The light guide module (50) includes a first reflector (51) and a movable reflector (52), wherein, The first reflector (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 it is in the first position, the movable reflector (52) reflects the first light to the image sensor (120) and blocks the second light. When it is in the second position, the movable reflector (52) avoids the second light. The first reflector (51) and the movable reflector (52) are also used for shake compensation to achieve optical image stabilization.

12. The optical lens according to any one of claims 1-6, characterized in that, The light guide module (50) includes a first reflector (51) and a controllable reflective mirror (53), wherein, The first reflector (51) is used to reflect the second light to the image sensor (120); The controllable reflective mirror (53) is located between the first reflector (51) and the image sensor (120). The controllable reflective mirror (53) has a transmission mode and a reflection mode. When in the reflection mode, the controllable reflective mirror (53) reflects the first light to the image sensor (120) and blocks the second light. When in the transmission mode, the second light passes through the controllable reflective mirror (53) and is directed to the image sensor (120). The first reflector (51) and the controllable reflector (53) are also used for shake compensation to achieve optical image stabilization.

13. A camera module, characterized in that, It includes an image sensor (120) and an optical lens as claimed in any one of claims 1-12, the optical lens being used to project light onto the image sensor (120).

14. A camera module, characterized in that, include: The rear lens assembly, prism (61), and 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 enters the interior of the prism (61) through the incident surface (613), and then exits from the first reflecting surface (611) to the image sensor (120) after being reflected by the first reflecting surface (611) and the second reflecting surface (612) in sequence. 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 shake compensation to achieve optical image stabilization. The camera module further includes: a first lens group (10), a second lens group (20), and a light guide module (50). The camera module includes a first imaging mode and a second imaging mode, wherein... The first lens group (10) and the second lens group (20) are disposed 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. 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 a different effective focal length in the first imaging mode and in the second imaging mode. 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. ELFG1, ELFG2, ELF1 and ELF2 satisfy the following relationship: EFLG1 / EFL1>0.5, EFLG2 / EFL2>1.0, and EFL1<EFL2.

15. The camera module according to claim 14, characterized in that, The angle between the photosensitive surface (122) and the third optical axis (OA3) is θ, where 15°≤θ<45°.

16. The camera module according to claim 14 or 15, characterized in that, The second reflecting surface (612) is parallel to the third optical axis (OA3), the angle between the first reflecting surface (611) and the incident surface (613) is α, and the angle between the first reflecting surface (611) and the second reflecting surface (612) is β, wherein 0°≤|α-2β|≤10°.

17. The camera module according to claim 14 or 15, characterized in that, The rear lens group includes a third lens group (30) and a fourth lens group (40) arranged sequentially along the third optical axis (OA3), and at least one of the third lens group (30) and the fourth lens group (40) is a focusing lens group that can move along the third optical axis (OA3).

18. An electronic device, characterized in that, The electronic device includes a camera module as described in any one of claims 13-17.

Images