Lens module and electronic equipment

Abstract

The invention provides a lens module and electronic equipment, the lens module at least comprises a first lens group, a second lens group, a first reflection element and a photosensitive element, light is incident from the first lens group, is reflected by the first reflection element, then is incident to the second lens group, and is projected to the photosensitive element after passing through the second lens group. The first lens group can move in a plane perpendicular to the optical axis of the first lens group, and the anti-shake function of the lens module is achieved. The second lens group can be close to or far away from the first reflecting element along the first direction, so that the focal length and the distance of the lens module are adjusted, the distance adjustment range of the lens module is expanded, the lens module and the electronic equipment can shoot farther objects and closer objects clearly, namely, the functions of long-focus shooting and macro shooting are realized, and the shooting efficiency is improved. On the basis, the anti-shake function of the first lens group is also beneficial for improving the imaging quality of the lens module to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of terminal device hardware, and specifically, to a lens module and an electronic device. Background Art

[0002] The size and weight of portable electronic devices, such as mobile phones and tablets, are important factors affecting their portability and operability. In order to enhance the user's shooting experience, more and larger lens modules are installed in electronic devices with limited storage space, which to a certain extent limits the thinness of electronic devices. How to achieve more shooting functions on the same lens module, improve the imaging quality of a single lens module, and on this basis, reduce the size of the lens module as much as possible and reduce the space occupied by the lens module in the electronic device are issues worth considering. Summary of the invention

[0003] The present application provides a lens module, which includes at least two lens groups, wherein a lens group close to the object to be photographed can move in a plane perpendicular to its optical axis, so as to adjust the position of the incident point of the incident light on the lens module, thereby realizing the anti-shake function of the lens module; the other lens group close to the photosensitive element can approach or move away from the photosensitive element along the optical axis direction, and during the movement of the lens group, the focal length and distance of the lens module will change accordingly, so that the object distance of the lens module has a wider adjustment range, and the lens module can clearly take pictures of both distant objects and nearby objects.

[0004] In the first aspect, a lens module is provided, comprising: a first lens group, a first reflecting element, a second lens group and a photosensitive element, wherein the first lens group comprises one or more lenses, the distance between the first lens group and the first reflecting element in a first direction is fixed, the first direction is the axial direction of the first lens group, the first lens group is configured to be movable in a first plane, and the first plane is perpendicular to the first direction; the second lens group comprises one or more lenses, the second lens group is configured to be able to approach or move away from the first reflecting element along a second direction, and the second direction is the axial direction of the second lens group; the first reflecting element is relatively fixed to the photosensitive element; wherein the incident light passes through the first lens group and is incident on the first reflecting element, is reflected by the first reflecting element and is incident on the second lens group, and passes through the second lens group and is incident on the photosensitive element.

[0005] In some scenarios, the relative positional relationship between the first lens group, the first reflective element and the second lens group can also be understood as that the first lens group and the second lens group are distributed on both sides of the normal of the reflective surface of the first reflective element.

[0006] The second lens group is configured to be able to move closer to or farther away from the first reflective element along the second direction. It can also be understood that the second lens group is configured to be able to move away from or closer to the photosensitive element along the second direction.

[0007] In some scenarios, this technical solution can be understood as the first plane being parallel to the focal plane of the first lens group.

[0008] The first lens group can move within the first plane, which can be understood as the first lens group being able to adjust the position of the incident point of the incident light on the first lens group. In other words, the lens head module can have an anti-shake function. Compared with a lens module that uses an image sensor to implement the anti-shake function of the lens module, in the lens module provided by this technical solution, there can be more space between the first reflection element and the photosensitive element for accommodating the second lens group for focusing. There is a greater adjustment space for the number of lenses, the thickness of the lenses, the distance between the lenses, etc. within the second lens group. The implementation of this technical solution is beneficial to enhancing the adjustment ability of the second lens group for imaging light and improving the imaging quality of the lens module. In addition, since there are fewer components provided between the first reflection element and the photosensitive element, this technical solution also helps to reduce the volume of the lens module to a certain extent.

[0009] When the second lens group approaches or moves away from the first reflection element, the distance between the second lens group and the first lens group also changes accordingly. In other words, if the first lens group and the second lens group are regarded as a whole, the overall focal length of these two lens groups will change as the second lens group moves. In addition, the image distance of the lens module will also change during the movement of the second lens group. The simultaneous change of the focal length and the image distance is beneficial to expanding the change range of the object distance, thereby facilitating the lens module to clearly photograph objects farther away and closer.

[0010] In addition, compared with a solution that uses the movement of the first lens group to achieve the focusing function, the lens module provided by this technical solution is smaller in size in the light incident direction, or rather, the thickness of the lens module is thinner. When this lens module is installed on an electronic device, it is beneficial to reduce the size of the electronic device in the thickness direction.

[0011] Combined with the first aspect, in some implementation manners of the first aspect, the lens module further includes a first platform. The first lens group is fixedly connected to the first platform, and the first platform is used to drive the first lens group to move within the first plane.

[0012] Fixing the lens group on the moving platform and driving the lens group to move through the movement of the platform is beneficial to improving the stability of the lens group during movement and the reliability of the anti-shake performance of the lens module.

[0013] Combined with the first aspect, in some implementation manners of the first aspect, the focal length of the first lens group is G1, and the maximum stroke of the first lens group within the first plane is 2×Ld. G1 and Ld satisfy:

[0014] In some scenarios, the maximum travel of the first lens group can be understood as the distance between the two farthest points during the movement of the first lens group in the first plane. Here, the maximum travel of the first lens group can be understood as twice the anti-shake travel of the first lens group.

[0015] The greater the maximum travel of the first lens group, the stronger the anti-shake performance of the lens module. The maximum travel of the first lens group provided by this technical solution can meet the requirements for the anti-shake performance of the lens module during shooting.

[0016] Combined with the first aspect, in some implementation manners of the first aspect, the lens module further includes a second platform. The second lens group is fixedly connected to the second platform, and the second platform is used to drive the second lens group to approach or move away from the first reflecting element along the second direction.

[0017] In a possible implementation manner, the first platform can be an electromagnetic driving platform, such as a voice coil motor, etc.

[0018] Fixing the lens group on the moving platform and driving the lens group to move through the movement of the platform is beneficial to improving the stability of the movement process of the lens group and the reliability of the shooting performance of the lens module.

[0019] Combined with the first aspect, in some implementation manners of the first aspect, the total track length of the lens module is Lt, and the maximum travel of the second lens group in the second direction is Mv. Lt and Mv satisfy:

[0020] The greater the maximum travel of the second lens group, the greater the adjustable range of the focal length, distance, and object distance of the lens module. However, a larger travel often means a larger accommodation space is required. The maximum travel of the second lens group provided by this technical solution is beneficial to taking into account the good shooting performance of the lens module and the small volume of the lens module.

[0021] Combined with the first aspect, in some implementation manners of the first aspect, the first lens group has a positive optical power.

[0022] The first lens group having a positive optical power means that the size of the image formed by the object after passing through the first lens group is smaller than the size of the object. In other words, the incident light rays are converged first after entering the lens module and then an image is formed. In this way, more incident light rays can finally be projected onto the photosensitive element, or rather, more information of the object being photographed can be captured by the lens module. The implementation of this technical solution is beneficial to improving the imaging quality of the lens module.

[0023] Combined with the first aspect, in some implementation manners of the first aspect, the optical axis of the first lens group is perpendicular to the optical axis of the second lens group.

[0024] In this technical solution, the incident light that is horizontally incident on the first lens group will be vertically incident on the second lens group and then projected onto the photosensitive element. The implementation of this technical solution is conducive to more reasonably arranging other optical devices in the lens module, etc., and is conducive to improving the utilization efficiency of the internal space of the lens module.

[0025] In combination with the first aspect, in some implementation manners of the first aspect, the lens module further includes a third lens group, the third lens group includes one or more lenses, the third lens group is located on a side of the second lens group close to the first reflecting element, and the third lens group is relatively fixed to the first reflecting element.

[0026] In combination with the first aspect, in some implementation manners of the first aspect, the lens module further includes a fourth lens group, the fourth lens group includes one or more lenses, the fourth lens group is located on a side of the second lens group away from the first reflecting element, and the fourth lens group is relatively fixed to the first reflecting element.

[0027] The setting of the third lens group and / or the fourth lens group increases adjustable dimensions such as the propagation path and optical path of the light incident on the lens module, which is conducive to making the imaging of the lens module on the photosensitive element clearer and improving the imaging quality.

[0028] In combination with the first aspect, in some implementation manners of the first aspect, the lens module further includes a second reflecting element, the second reflecting element is located on a side of the second lens group away from the first reflecting element, and the second reflecting element is arranged close to the photosensitive element.

[0029] The setting of the second reflecting element can make the position of the photosensitive element more flexible in the lens module, which is more conducive to improving the utilization rate of the space occupied by the lens module, and to a certain extent is conducive to reducing the space occupied by the lens module in the optical axis direction of the second lens group.

[0030] In a second aspect, an electronic device is provided, the electronic device includes a middle frame and the lens module in the first aspect and any possible implementation manners thereof, and the lens module is fixedly connected to the middle frame.

[0031] Compared with the solution that uses the movement of the first lens group to achieve the focusing function, the lens module provided by this technical solution is smaller in size in the light incident direction, or rather, the thickness of the lens module is thinner, and the electronic device equipped with this lens module is smaller in size in the thickness direction, or rather, the electronic device is thinner. Description of the Drawings

[0032] Figure 1 is a schematic diagram of an electronic device provided by an embodiment of the present application.

[0033] Figure 2 is a schematic diagram of a lens module provided by an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of another lens module provided by an embodiment of the present application.

[0035] Figure 4 It is a schematic diagram of several lens forms provided by an embodiment of the present application.

[0036] Figure 5 It is a schematic diagram of yet another lens module provided by an embodiment of the present application.

[0037] Figure 6 It is a schematic diagram of yet another lens module provided by an embodiment of the present application.

[0038] Figure 7 It is a schematic diagram of yet another lens module provided by an embodiment of the present application.

[0039] Figure 8 It is a schematic diagram of yet another lens module provided by an embodiment of the present application.

[0040] Figure 9 It is a schematic diagram of yet another lens module provided by an embodiment of the present application.

[0041] Figure 10 It is a schematic diagram of the imaging process of a lens module provided by an embodiment of the present application.

[0042] Figure 11 It is a schematic diagram of the imaging process of another lens module provided by an embodiment of the present application. Detailed implementation manners

[0043] The embodiments of the present application will be described in detail below. The examples of the embodiments of the present application are shown in the accompanying drawings. In the accompanying drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0044] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the technical field to which the present application belongs. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0045] References to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear at different places in this specification, do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants mean "including but not limited to", unless otherwise specifically emphasized.

[0046] Before formally introducing the embodiments of the present application, the following terms that may be used are first explained.

[0047] The F-number / aperture, or F#, F-number, is a relative value obtained by dividing the focal length of the lens by the lens aperture diameter (the reciprocal of the relative aperture). The smaller the aperture F-value, the more light enters in the same unit time. The larger the aperture F-value, the smaller the depth of field, and the background content of the photo will be blurred. Similar to the effect of a telephoto lens.

[0048] The diaphragm refers to an entity that restricts the light beam in an optical system, which can be the edge of a lens, a frame, or a specially set perforated barrier.

[0049] The focal length or focal length is the distance from the center of the lens to the focus where the light is focused. For a system composed of a rear lens or multiple lenses or mirrors, the focal length is usually expressed as the effective focal length (EFL).

[0050] The total track length (TTL) generally refers to the distance from the surface of the image sensor to the top of the lens. TTL is the main factor in forming the height of the lens module.

[0051] The image height (IH) is the radius of the imaging circle, the semi-image height.

[0052] The field of view (FOV), also known as the field of vision or field of view, is the range of the "observable world" that can be seen via vision or a device at any given moment. In an optical instrument, the angle formed by the two edges of the maximum range through which the image of the measured target can pass through the lens with the vertex of the lens of the optical instrument is called the field of view angle.

[0053] Image circle (IC), the cross-section of the light cone formed by the transmission of light through a single lens or a series of lenses onto the image plane. For a system with an adjustable image circle, the maximum image circle (MIC) is the one with the largest diameter among multiple image circles.

[0054] Back focal length (BFL), the distance between the vertex of the last optical surface in an optical system and the rear focal point.

[0055] Modulation transfer function (MTF), modulation contrast, a measure for evaluating the imaging quality of a system.

[0056] Chief ray, the ray passing through the centers of the entrance pupil and the exit pupil of the system.

[0057] Chief ray angle (CRA), the incident angle of the chief ray on the image plane.

[0058] Positive optical power: A lens or a lens group has a positive focal length and the effect of focusing light rays.

[0059] Negative optical power: A lens or a lens group has a negative focal length and the effect of diverging light rays.

[0060] Focusing distance: The distance from the object to be photographed to the image-side focal plane. The closest focusing distance refers to the shortest distance at which the lens can focus on the object to be photographed. When the distance between the focal plane of the object to be photographed and the focal plane of the lens module is less than the closest focusing distance, the lens cannot focus. When the distance between the focal plane of the object to be photographed and the focal plane of the lens module is greater than or equal to the closest focusing distance, the lens can focus.

[0061] Image sensor, also known as an image transducer, is a device that converts optical images into electrical signals and is widely used in digital cameras and other electro-optical devices. Early image sensors used analog signals, such as the videocamera tube. Nowadays, image sensors are mainly divided into two types: charge-coupled device (CCD) and complementary metal-oxide semiconductor (CMOS) active pixel sensors.

[0062] An infrared cut-off filter, also known as an infrared filter or heat-absorbing filter, is a filter used to filter the infrared band. For example, when installed on equipment with incandescent lamps (such as slides and projectors), it can prevent unnecessary heat from burning the lens. When installed on a camera with solid-state electronic devices (CCD or CMOS), it can prevent infrared rays from passing through the camera lens and causing image distortion.

[0063] The Abbe number is used to measure the degree of light dispersion of a medium. It was originally used to measure the properties of optical glass, and other transparent materials such as common polyester resins and polycarbonates for spectacle lenses are also applicable.

[0064] The refractive index refers to the ratio of the speed of light in a vacuum (the speed of light) to the phase velocity after it enters a medium. The refractive index determines the degree of bending or refraction of the light path when it enters the material.

[0065] Distant-view shooting and macro shooting are two shooting methods frequently used by imaging devices such as electronic devices or cameras. To make the objects captured in the distant-view shooting state (hereinafter referred to as the first shooting state or the telephoto shooting mode) clear enough, the lens module needs to have a long object distance. To make the objects captured in the macro shooting state (hereinafter referred to as the second shooting state or the macro shooting mode) clear enough, the lens module needs a short minimum focusing distance. Thin and light is a development direction of portable electronic devices such as mobile phones. The volume of the lens module is often an important factor restricting the size factors such as the volume and thickness of electronic devices. To simultaneously realize the functions of distant-view shooting and macro shooting on the basis of reducing the volume of the lens module, the embodiments of the present application provide a lens module and an electronic device, which are introduced as follows.

[0066] As Figure 1 Shown is an electronic device 1000 provided by an embodiment of the present application. The electronic device 1000 may include a front camera module 1100 and / or a rear camera module 1200. The lens module provided by the present application can be applied to both the front camera module 1100 and the rear camera module 1200. In some examples, the electronic device 1000 includes a middle frame, and the front camera module 1100 and / or the rear camera module 1200 can be fixedly connected to the middle frame and thus installed in the electronic device 1000.

[0067] As Figure 2Shown is a first lens module 2000 provided by an embodiment of the present application. The first lens module 2000 may be the aforementioned front camera module 1100 or rear camera module 1200. The first lens module 2000 may include a plurality of lens groups and at least one reflecting element. One of the plurality of lens groups may implement the anti-shake function of the first lens module 2000, and another lens group may implement the focusing function of the first lens module 2000. At least one reflecting element may be used to adjust the propagation path of light within the first lens module 2000.

[0068] In some examples, the first lens module 2000 may include a first lens group 100, a second lens group 300, a first reflecting element 200, and an image sensor 400. Light incident on the first lens module 2000 passes through the first lens group 100 and then enters the first reflecting element 200. After being reflected by the first reflecting element 200, it enters the second lens group 300 and is projected onto the image sensor 400 after passing through the second lens group 300.

[0069] In some examples, the first lens module 2000 further includes an infrared cut-off filter 500. The infrared cut-off filter 500 is located between the second lens group 300 and the image sensor 400 and is disposed close to the image sensor 400. The light emitted from the second lens group 300 is filtered by the infrared cut-off filter 500 and then projected onto the image sensor 400.

[0070] In some examples, the first lens module 2000 further includes a diaphragm. The diaphragm may be disposed on a side of the first lens group 100 away from the first reflecting element 200, and the diaphragm may be used to adjust the size of the light beam incident on the first lens group 100.

[0071] As Figure 2 shown, the first reflecting element 200 may be located between the first lens group 100 and the second lens group 300, and the second lens group 300 may be located between the first reflecting element 200 and the image sensor 400.

[0072] In some examples, the second lens group 300 may move closer to or away from the first reflecting element 200 along a first direction 2001. Or rather, the second lens group 300 may move away from or closer to the image sensor 400 along the first direction 2001.

[0073] Exemplarily, the first direction 2001 may be the second axis O 2 O 2 , and in some scenarios, the first direction 2001 may also be referred to as the second axis O 2 O 2 .

[0074] By way of example and not limitation, the first lens module 2000 may include a first platform (not shown in the figure). The second lens group 300 may be fixedly connected to the first platform. The first platform may be a movable platform, and the movable platform may be used to drive the second lens group 300 to move closer to or away from the first reflecting element 200 along the aforementioned first direction 2001.

[0075] There should be a certain moving distance or movable space between the first reflecting element 200 and the photosensitive element 400, so that the second lens group 300 can move along the first direction 2001 in this movable space.

[0076] If the first lens group 100 and the second lens group 300 are regarded as a whole, during the movement of the second lens group 300 along the first direction 2001, the focal length of the whole of the first lens group 100 and the second lens group 300 will change, and the distance between the first lens group 100 and the second lens group 300 as a whole will also change. The focal length, object distance, and image distance satisfy the imaging relationship. Therefore, the changes in the focal length and image distance provide an adjustment space for the object distance of the first lens module 2000. In other words, the object distance of the first lens module 2000 has a wider adjustment range.

[0077] Compared with the solution of using the movement of the first lens group to achieve the focusing function, the lens module provided by this technical solution is smaller in size in the light incident direction, or rather, the thickness of the lens module is thinner. When this lens module is installed on an electronic device, it is beneficial to reduce the size of the electronic device in the thickness direction.

[0078] The greater the moving stroke of the second lens group 300 along the first direction 2001, the wider the adjustable range of the focal length, object distance, and image distance of the first lens module 2000. The wider the adjustable range of the object distance, the wider the distance range from far to near of the objects that the first lens module 2000 can clearly photograph. In other words, the first lens module 2000 can clearly photograph farther and closer objects.

[0079] In some examples, the maximum moving stroke of the second lens group 300 along the first direction 2001 is Mv, and the total track length of the first lens module 2000 is Lt. Lt and Mv may satisfy: Exemplarily, Mv may be 0.05Lt, 0.1Lt, 0.2Lt, or 0.3Lt, etc.

[0080] In some examples, the magnification of the lens module in the second shooting state is β, and 0.1 ≤ β ≤ 0.5.

[0081] In some examples, the first lens group 100 is configured to be movable in the first plane 2002. Exemplarily, the first plane 2002 may be parallel to the first axis O of the first lens group 100 1O 1 Vertical. Or rather, the first plane 2002 is parallel to the focal plane of the first lens group 100.

[0082] Exemplarily, the first lens module 2000 may include a second platform (not shown in the figure). The first lens group 100 may be fixedly connected to the second platform. The second platform may be a movable platform, and this movable platform may be used to drive the first lens group 100 to move within the first plane 2002.

[0083] The first lens group 100 can move from the initial position (or the displacement zero point) to other positions within the first plane 2002. If the distance between the farthest point that the first lens group 100 can move within the first plane 2002 and the initial position is denoted as Ld, then the maximum travel of the first lens group 100 within the first plane 2002 can be denoted as 2×Ld. The larger the maximum travel corresponding to the first lens group 100, the larger the range of the position of the incident point where the light is incident on the first lens group 100 can be adjusted. It can be understood that the stronger the anti-shake performance of the first lens module 2000.

[0084] In some examples, the focal length of the first lens group 100 can be denoted as G1, and G1 and Ld can satisfy: Exemplarily, G1 can be 60Ld, 80Ld, 100Ld, or 120Ld, etc.

[0085] In some examples, in the anti-shake characteristic of the lens module, the anti-shake angle is γ, and 0.5° < γ < 3.0°.

[0086] In some examples, the first lens group 100 has a positive optical power. Or rather, after the incident light is incident on the first lens group 100 and then exits, the exiting light is more convergent relative to the incident light.

[0087] The first lens group 100 may include one or more lenses. The adjustment of the first lens group 100 for the incident light can be determined according to the combined result of the adjustment of this one or more lenses for the incident light respectively.

[0088] For the same lens, the properties of the two surfaces of the lens, the thickness of the lens, and the material of the lens, etc. jointly determine the propagation path and propagation optical path of the incident light within the lens. The properties of the lens surface may include the type of the surface, the radius of curvature of the surface (or the degree of concavity and convexity of the surface), etc. Different lens materials may correspond to different light refractive indices. By adjusting the material and thickness of the lens, the deflection of the incident light in the direction perpendicular to the optical axis of the lens can be adjusted, thereby adjusting the position of the exiting point of the light on the lens.

[0089] For a lens group including multiple lenses, the adjustment effect of the lens group on the incident light is also related to the distance between two adjacent lenses among the multiple lenses.

[0090] Therefore, by adjusting one or more of the following in the first lens group 100 and / or the second lens group 300, the propagation path and / or the propagation optical path of the incident light in the first lens module 2000 can be adjusted, thereby adjusting the final imaging effect of the first lens module 2000.

[0091] The number of lenses in the lens group, the distance between two adjacent lenses in the lens group including multiple lenses, the thickness of each lens in the lens group, the surface property of each lens in the lens group, or the material of each lens in the lens group.

[0092] In some examples, the lens module further includes a third lens group, the third lens group includes one or more lenses, the third lens group is located on the side of the second lens group close to the first reflection element, and the third lens group is relatively fixed to the first reflection element.

[0093] In some examples, the lens module further includes a fourth lens group, the fourth lens group includes one or more lenses, the fourth lens group is located on the side of the second lens group away from the first reflection element, and the fourth lens group is relatively fixed to the first reflection element.

[0094] The setting of the third lens group and / or the fourth lens group increases the adjustable dimensions such as the propagation path and the optical path of the light incident on the lens module, which is beneficial to making the imaging of the lens module on the photosensitive element clearer and improving the imaging quality.

[0095] In some examples, the lens module further includes a second reflection element, the second reflection element is located on the side of the second lens group away from the first reflection element, and the second reflection element is disposed close to the photosensitive element.

[0096] The setting of the second reflection element can make the position of the photosensitive element in the lens module more flexible, which is more beneficial to improving the utilization rate of the space occupied by the lens module, and is beneficial to reducing the space occupied by the lens module in the optical axis direction of the second lens group to a certain extent.

[0097] As Figure 3 shown is a second lens module 3000 provided by an embodiment of the present application. The second lens module 3000 may include the first lens group 100, the first reflection element 200, the second lens group 300, and the photosensitive element 400 in the foregoing first lens module 2000. The light passes through the first lens group 100 and is incident on the surface of the first reflection element 200, and after being reflected by the first reflection element 200, it is incident on the second lens group 300 and is projected onto the photosensitive element 400 after passing through the second lens group 300.

[0098] In some examples, the second lens module 3000 may further include an infrared cut-off filter 500. The infrared cut-off filter 500 is located between the second lens group 300 and the photosensitive element 400 and is disposed close to the photosensitive element 400. The light emitted from the second lens group 300 is incident on the photosensitive element 400 after being filtered by the infrared cut-off filter 500. The setting of the infrared cut-off filter 500 helps to prevent infrared rays in the incident light from being incident on the photosensitive element 400, which is beneficial to improving the imaging quality of the second lens module 3000.

[0099] In some examples, the second lens module 3000 further includes a diaphragm, which may be disposed on a side of the first lens group 100 away from the first reflecting element 200. The diaphragm can be used to adjust the size of the light beam incident on the first lens group 100.

[0100] In some examples, the first optical axis O 1 O 1 of the first lens group 100 may be inclined to the reflecting surface RP1 of the first reflecting element 200, and the second optical axis O 2 O 2 of the second lens group 300 may be inclined to the reflecting surface RP1 of the first reflecting element 200. The light emitted from the first lens group 100 can be incident on the second lens group 300 after being reflected by the first reflecting element 200. Exemplarily, the first optical axis O 1 O 1 of the first lens group 100 and the second optical axis O 2 O 2 of the second lens group 300 may be perpendicular to each other.

[0101] In some examples, the first reflecting element 200 may be one or more of a plane mirror, a right-angled prism mirror, an off-axis parabolic mirror, a hollow roof prism mirror, etc. Exemplarily, the first reflecting element 200 may be a right-angled prism reflecting element.

[0102] The shape, size, the distance between the first reflecting element 200 and the first lens group 100, and the distance between the first reflecting element 200 and the second lens group 300 may all affect the propagation path of the incident light in the second lens module 3000, thereby affecting the imaging quality of the lens module.

[0103] Taking the first reflecting element 200 as a right-angled prism reflecting element as an example, the thickness of the first reflecting element 200 may be denoted as hr1, and hr1 may satisfy: 1.00 mm ≤ hr1 ≤ 10.00 mm. For example, hr1 may be 3.00 mm, 5.00 mm, 6.00 mm, 6.50 mm, 7.00 mm, 8.00 mm, or 9.00 mm, etc.

[0104] Taking the first reflecting element 200 as a diameter prism reflecting element as an example, the distances between the first reflecting element 200 and the first lens group 100 and between the first reflecting element 200 and the second lens group 300 can be denoted as Dr1 and Dr2 respectively.

[0105] In some examples, Dr1 can satisfy: 0.01 mm ≤ Dr1 ≤ 3.0 mm. For example, Dr1 can be 0.02 mm, 0.03 mm, 0.60 mm, 0.09 mm, 0.12 mm, 0.50 mm, 1.20 mm, 1.80 mm, or 2.40 mm, etc.

[0106] In some examples, Dr2 can satisfy: 1.0 mm ≤ Dr2 ≤ 4.0 mm. For example, Dr2 can be 1.50 mm, 1.80 mm, 2.10 mm, 2.40 mm, 3.20 mm, 3.60 mm, or 3.80 mm, etc.

[0107] By adjusting the light propagation path in the lens module through the reflecting element, when the lens module is installed in an electronic device with limited accommodation space, the setting of the reflecting element is beneficial to reasonably arrange the positions of components such as lens groups in the lens module, which is beneficial to improving the space utilization efficiency inside the electronic device.

[0108] In some examples, the first lens group 100 can move within the anti-shake plane. Or rather, one or more lenses in the first lens group 100 can move within the anti-shake plane, and this anti-shake plane can be perpendicular to the first optical axis O of the first lens group 100. 1 O 1 Taking the Figure 3 shown coordinate axes as an example, the first optical axis O 1 O 1 is parallel to the x-axis, and one or more lenses in the first lens group 100 can move within the y-z plane. Or rather, the anti-shake plane is the y-z plane.

[0109] In some examples, the second lens module 3000 further includes a first driving platform. The lenses in the aforementioned first lens group 100 can be fixedly connected to (such as installed on) the first driving platform. During the movement of the first driving platform, it can drive the first lens group 100 to move within the aforementioned driving plane. Exemplarily, the first driving platform can include a voice coil motor (VCM). When the magnitude of the current input to the voice coil motor changes, the moving distance of the first driving platform or the first lens group 100 in the moving direction can be adjusted accordingly, thereby realizing the anti-shake function.

[0110] In some examples, the first lens group 100 may have a positive optical power. That is to say, after light rays are incident on the first lens group 100, the emerging light rays are more convergent relative to the incident light rays. The number of lenses included in the first lens group 100 may be one or more.

[0111] In the case where only one lens is included in the first lens group 100, the lens has a positive optical power, and the optical axis of the lens is the first optical axis O of the first lens group 100 1 O 1 。

[0112] In the case where multiple lenses may be included in the first lens group 100, the multiple lenses have the same first optical axis O 1 O 1 。The multiple lenses may be arranged along the first optical axis O 1 O 1 When the incident light rays emerge after passing through the multiple lenses, the emerging light rays are more convergent relative to the incident light rays. Or rather, if the multiple lenses are regarded as a whole, the multiple lenses as a whole have a positive optical power.

[0113] Compared with only setting one lens in the first lens group 100, including a larger number of lenses in the first lens group 100 is beneficial to increasing the adjustment dimension of the first lens group 100 for the incident light rays, beneficial to improving the modulation effect of the first lens group 100 on the incident light rays, and beneficial to improving the imaging quality of the lens module. However, a larger number of lenses will increase the volume of the first lens group 100 to a certain extent and will increase the occupied space of the lens module.

[0114] In some examples, two coaxial lenses may be included in the first lens group 100, and by adjusting the spacing between the two lenses and the attributes of each of the two lenses, the adjustment of the first lens group 100 for the incident light rays can be achieved.

[0115] For the case where multiple lenses are included in the first lens group 100, the converging or diverging effect of each lens on the light rays may be different.

[0116] Exemplarily, as Figure 3 shown, the first lens group 100 may include a first lens 110 and a second lens 120. The first lens 110 may have a positive optical power, and the second lens 120 may have a negative optical power. Here, the first lens 110 may be disposed away from the first reflection element 200, and the second lens 120 may be disposed close to the first reflection element 200.

[0117] Similarly, by way of example, the first lens group 100 may include a first lens, a second lens, and a third lens. The first lens may have a positive optical power, the second lens may have a negative optical power, and the third lens may have a positive or negative optical power. Here, the first lens, the second lens, and the third lens are arranged in sequence along the first optical axis O 1 O 1 in a direction approaching the first reflecting element 200.

[0118] The ability of a lens to converge or diverge light is related to the surface shape of the lens, the thickness of the lens, the material of the lens, etc.

[0119] In some examples, the surface shape of one or more lenses in the first lens group 100 may be spherical or aspherical.

[0120] By way of example, for the case where the first lens group 100 includes the first lens 110 and the second lens 120, both surfaces on either side of any one of the first lens 110 and the second lens 120 may be spherical or both may be aspherical, or one side of the two surfaces is spherical and the other side is aspherical. For example, both surfaces of the first lens 110 and the second lens 120 may be aspherical.

[0121] Similarly, by way of example, for the case where the first lens group 100 includes more than two lenses, the two opposite surfaces of each lens may be spherical or aspherical, and the present application places no restrictions thereon.

[0122] In some examples, for an aspherical lens, its surface may be determined according to the following formula:

[0123]

[0124] where the parameter c = 1 / R, that is, the curvature corresponding to the radius; r is the distance from a point on the optical surface to the optical axis; z represents the sagittal height of the point along the optical axis direction; k is the conic coefficient of the surface, I is the aspherical coefficient term, and by way of example, I may take 30; A I is the aspherical coefficient.

[0125] By changing the concavity and convexity of the two surfaces of the lens, the divergence or convergence effect of the lens on the same beam of light can be changed. As Figure 4 shown are lenses with different surface properties provided by an embodiment of the present application. The concavity and convexity of the lenses in the first lens group 100 may be specifically designed according to the performance of the first lens group 100, and the present application places no restrictions thereon.

[0126] Figure 4Among them, the lens 41, the lens 42, and the lens 43 all have positive optical power, and the lens 44, the lens 45, the lens 46, and the lens 47 all have negative optical power. Taking the positive direction of the x-axis as the positive curvature when the curved surface opening faces the positive direction of the x-axis, and the negative direction of the x-axis as the negative curvature when the curved surface opening faces the negative direction of the x-axis. Both sides of the lens 41 are positive curvature surfaces, the left side of the lens 42 is a positive curvature surface, and the right side is a negative curvature surface, and both sides of the lens 43 are negative curvature surfaces. Both sides of the lens 44 and the lens 46 are positive curvature surfaces, both sides of the lens 45 are negative curvature surfaces, the left side of the lens 47 is a negative curvature surface, and the right side is a positive curvature surface.

[0127] In other words, for a lens with positive optical power, the surfaces on both sides thereof can both be positive curvature surfaces, negative curvature surfaces, or one side is a positive curvature surface and the other side is a negative curvature surface. Similarly, for a lens with negative optical power, the surfaces on both sides thereof can both be positive curvature surfaces, negative curvature surfaces, or one side is a positive curvature surface and the other side is a negative curvature surface.

[0128] Figure 4 Only some types of lenses applicable to the lenses in the first lens group 100 are provided by way of example. It should be understood that there are more types of lenses that are also applicable to the first lens group 100, and the embodiments of the present application do not limit this.

[0129] By adjusting the magnitudes of the radii of curvature of the surfaces on both sides of the lens, the diverging or converging effect of the lens on the incident light can be changed. The magnitudes of the radii of curvature of the lenses in the first lens group 100 can be specifically designed according to the performance of the first lens group 100, and the present application does not limit this.

[0130] In some examples, with reference to Figure 3 , taking the case where the first lens group 100 includes the first lens 110 and the second lens 120 as an example, the four surfaces from the side far from the first reflecting element 200 to the side close to the first reflecting element 200 can be respectively referred to as the first surface SF1, the second surface SF2, the third surface SF3, and the fourth surface SF4.

[0131] Exemplarily, the radii of curvature of the first surface SF1, the second surface SF2, the third surface SF3, and the fourth surface SF4 can be approximately: 9 mm, 90 mm, 15 mm, and 8 mm, respectively.

[0132] Exemplarily, the radii of curvature of the first surface SF1, the second surface SF2, the third surface SF3, and the fourth surface SF4 can be approximately: 11 mm, 1600 mm, 21 mm, and 10 mm, respectively.

[0133] Exemplarily, the radii of curvature of the first surface SF1, the second surface SF2, the third surface SF3, and the fourth surface SF4 can be approximately: -22 mm, -9 mm, -10 mm, and -11 mm, respectively, where a negative value of the radius of curvature indicates that the surface is a negative curvature surface.

[0134] Exemplarily, the radii of curvature of the first surface SF1, the second surface SF2, the third surface SF3, and the fourth surface SF4 can be approximately: 15 mm, -100 mm, 33 mm, and 13 mm, respectively, where a negative value of the radius of curvature indicates that the surface is a negative curvature surface.

[0135] By adjusting the thickness of the lens, the offset distance of the incident light in the direction perpendicular to the optical axis can be changed, so that the position of the exit point of the incident light on the lens can be changed, and further the propagation path of the light in the first lens group 100 can be adjusted. The thickness of the lens in the first lens group 100 can be specifically designed according to the performance of the first lens group 100, and the present application does not limit this.

[0136] Taking the first lens group 100 including the first lens 110 and the second lens 120 as an example.

[0137] Exemplarily, the thickness of the aforementioned first lens 110 is denoted as h1, and h1 can satisfy: 1.0 mm ≤ h2 ≤ 4.0 mm. For example, h1 can be 1.50 mm, 2.00 mm, 2.50 mm, or 3.00 mm, etc. The thickness of the aforementioned second lens 120 is denoted as h2, and h2 can satisfy: 0.1 mm ≤ h2 ≤ 0.6 mm. For example, h2 can be 0.20 mm, 0.25 mm, 0.30 mm, 0.45 mm, or 0.55 mm, etc.

[0138] For a lens group including multiple lenses, the divergence or convergence ability of the lens group as a whole for incident light is related not only to the attributes of each lens in the lens group (such as the surface type, radius of curvature, etc. of the lens) but also to the arrangement of the multiple lenses in the lens group. Specifically, for the form in which multiple lenses in the lens group are arranged along the optical axis, the divergence or convergence ability of the lens group as a whole for incident light is related to the distance between adjacent two lenses. By adjusting the distance between adjacent two lenses, to a certain extent, the overall focal length of the lens group can be adjusted. In addition, by adjusting the distance between the lenses located on both sides in the lens group, to a certain extent, it can also affect the propagation path of the incident light in the lens group and the position of the exit point of the incident light after passing through the lens group.

[0139] Taking the first lens group 100 including the first lens 110 and the second lens 120 as an example.

[0140] Exemplarily, the distance between the first lens 110 and the second lens 120 is denoted as D1, and D1 can satisfy: 0.01 mm ≤ D1 ≤ 2.00 mm. Exemplarily, D1 can be 0.03 mm, 0.06 mm, 0.10 mm, 1.00 mm, 1.50 mm, etc.

[0141] Changing the material of the lens can change the refractive index of the lens for light, and the refraction angle of the incident light in the lens will thus be different. Therefore, changing the material of the lens can also play a role in adjusting the propagation path of the incident light in the lens to a certain extent. The material or refractive index of the lenses in the first lens group 100 can be specifically designed according to the performance of the first lens group 100, and this application does not limit it.

[0142] In some examples, the first lens group 100 includes multiple lenses, and the multiple lenses can be made of glass or plastic. For example, polymethyl methacrylate, polycarbonate, or cycloolefin polymer, etc.

[0143] By selecting lens materials with different refractive indices and Abbe numbers, factors such as the propagation path of the incident light in the lens can be adjusted, thereby affecting the imaging effect of the lens module.

[0144] In some examples, the refractive index of one or more lenses included in the first lens group 100 is n1, and n1 satisfies: 1.5000 ≤ n1 ≤ 1.80000. For example, n1 can take values such as 1.55000, 1.60000, 1.65000, 1.70000, or 1.80000, etc.

[0145] In some examples, the Abbe number of one or more lenses included in the first lens group 100 is V1, and V1 satisfies: 15.00 ≤ V1 ≤ 60.00. For example, V1 can take values such as 20.00, 25.00, 30.00, 40.00, 50.00, or 55.00, etc.

[0146] The second lens group 300 can move along the focusing direction. Or rather, one or more lenses in the second lens group 300 can move along the focusing direction. This focusing direction can be the same as the direction of the second optical axis O 2 O 2 of the second lens group 300. In this case, the above solution can also be understood as: the second lens group 300 or the lenses in the second lens group 300 can move along the second optical axis O 2 O 2 towards or away from the first reflection element 200, or the second lens group 300 can move along the second optical axis O 2 O 2 towards or away from the photosensitive element 400.

[0147] During the process of the second lens group 300 moving along the second optical axis O 2 O 2 On the one hand, during this process, the incident position of the light rays emitted by the first reflecting element 200 on the second lens group 300 will change, and the position of the exit point of the light rays on the side of the second lens group 300 close to the photosensitive element 400 will change. On the other hand, the optical path of the light rays propagating from the second lens group 300 to the photosensitive element 400 will change, or rather, the imaging distance of the second lens module 3000 will change, and the position of the incident point of the light rays on the photosensitive element 400 will also change accordingly. Thus, by moving the second lens group 300 along the second optical axis O 2 O 2 the focusing function of the second lens module 3000 can be achieved.

[0148] In some examples, the second lens module 3000 may further include a second driving platform, and this second driving platform can drive the aforementioned second lens group 300 to move along the second optical axis O 2 O 2 Exemplarily, the lenses in the second lens group 300 may be fixedly connected to the second driving platform (for example, mounted on the second driving platform), and when the second driving platform moves along the second optical axis O 2 O 2 it can drive the lenses in the second lens group 300 to move along the second optical axis O 2 O 2 For example, the second driving platform may include a voice coil motor, and under the drive of the voice coil motor, the second driving platform moves along the second optical axis O 2 O 2

[0149] There should be a certain accommodation space between the first reflecting element 200 and the photosensitive element 400 in the direction of the second optical axis O 2 O 2 and the distance of this accommodation space on the second optical axis O 2 O 2 should be greater than the distance between the lens on the side of the second lens group 300 close to the first reflecting element 200 and the lens on the side close to the photosensitive element 400, so that the second lens group 300 has a certain moving space in the direction of the second optical axis O 2 O 2 The larger this moving space is, the wider the focusing range that the second lens group 300 or the second lens module 3000 can achieve.

[0150] In some examples, the second lens group 300 may have a positive optical power, or rather, when the light rays incident on the second lens group 300 exit from the second lens group 300, the exit light rays are more convergent relative to the incident light rays. ​

[0151] When the second lens group 300 includes one lens, the one lens has a positive optical power, and the optical axis of the lens is the second optical axis O of the second lens group 300 2 O 2 .

[0152] When the second lens group 300 includes multiple lenses, the multiple lenses have the same second optical axis O 2 O 2 . The multiple lenses can be arranged along the second optical axis O 2 O 2 When the incident light passes through the multiple lenses and exits, the exiting light is more convergent relative to the incident light. Or, if these multiple lenses are regarded as a whole, the multiple lenses as a whole have a positive optical power.

[0153] In some examples, the second lens group 300 can have a negative optical power. Or, when the light incident on the second lens group 300 exits from the second lens group 300, the exiting light is more divergent relative to the incident light.

[0154] When the second lens group 300 includes one lens, the one lens has a negative optical power, and the optical axis of the lens is the second optical axis O of the second lens group 300 2 O 2 .

[0155] When the second lens group 300 includes multiple lenses, the multiple lenses have the same second optical axis O 2 O 2 . The multiple lenses can be arranged along the second optical axis O 2 O 2 When the incident light passes through the multiple lenses and exits, the exiting light is more divergent relative to the incident light. Or, if these multiple lenses are regarded as a whole, the multiple lenses as a whole have a negative optical power.

[0156] For the case where the second lens group 300 includes multiple lenses, the divergence or convergence effect of each lens in the multiple lenses on the light can be different.

[0157] In some examples, as Figure 3 shown, the second lens group 300 can include five lenses, namely, the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350. The divergence or convergence effect of these five lenses on the incident light can be different.

[0158] Exemplarily, the fourth lens 310, the seventh lens 340, and the eighth lens 350 can have a positive optical power, and the fifth lens 320 and the sixth lens 330 can have a negative optical power.

[0159] Similarly, by way of example, the fourth lens 310 and the eighth lens 350 may have positive optical power, and the fifth lens 320, the sixth lens 330, and the seventh lens 340 may have negative optical power.

[0160] In some examples, the second lens group 300 may include two lenses, three lenses, four lenses, or more than five lenses, etc., and the embodiments of the present application do not limit this. For the second lens group 300 with different numbers of lenses, the setting of the positive or negative optical power of each lens can also be designed according to the overall performance requirements of the second lens module 3000, and their combinations are also diverse, and the embodiments of the present application do not limit this either.

[0161] Compared with only setting one lens in the second lens group 300, including more lenses in the second lens group 300 is beneficial to increasing the adjustment dimension of the second lens group 300 for incident light, beneficial to improving the modulation effect of the second lens group 300 on incident light, and beneficial to improving the imaging quality of the lens module. However, a larger number of lenses will increase the volume of the second lens group 300 to a certain extent and increase the occupied space of the lens module.

[0162] In some examples, the second lens group 300 may include five coaxial lenses, and the adjustment of the second lens group 300 for incident light can be achieved by adjusting the distance between two lenses and the properties of each of the two lenses.

[0163] The ability of a lens to converge or diverge light is related to the surface shape of the lens, the thickness of the lens, the material of the lens, etc.

[0164] In some examples, the surface shape of one or more lenses in the second lens group 300 may be spherical or aspherical.

[0165] By way of example, for the case where the second lens group 300 includes 5 lenses as described above, the surfaces on both sides of each of the 5 lenses may both be spherical, aspherical, or one side surface of the two side surfaces is spherical and the other side is aspherical.

[0166] Similarly, by way of example, for the case where the second lens group 300 includes 1 lens, 2 lenses, 3 lenses, 4 lenses, or more than 5 lenses, the two opposite surfaces of each lens may be spherical or aspherical, and the present application does not limit this.

[0167] In some examples, for an aspherical lens, its surface can also be determined according to the above formula (1).

[0168] By changing the concave and convex conditions of the two side surfaces of the lens, the divergence or convergence effect of the lens on the same beam of light can be changed. For example, Figure 4The figure shows lenses with different surface properties provided by the embodiments of the present application. For Figure 4 the descriptions of different types of lenses in Figure 4 will not be elaborated here. For detailed descriptions, reference can be made to the previous text. It should be noted that Figure 4 the different types of lenses shown in

[0169] and more types of lenses not shown in

[0170] can all be applied to the second lens group 300. Figure 3 By adjusting the magnitudes of the curvature radii of the two surfaces on both sides of the lens, the divergence or convergence effect of the lens on incident light can be changed.

[0171] Exemplarily, for the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 in the second lens group 300, the curvature radii of the two relatively arranged surfaces can be approximately: 6 mm, 7 mm, 12 mm, 31 mm, 8 mm, 5 mm, 5 mm, 12 mm, 100 mm, and 8 mm respectively.

[0172] Exemplarily, for the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 in the second lens group 300, the curvature radii of the two relatively arranged surfaces can be approximately: 6 mm, 8 mm, 11 mm, 18 mm, 8 mm, 5 mm, 4 mm, 9 mm, 373 mm, and 9 mm respectively.

[0173] Exemplarily, for the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 in the second lens group 300, the curvature radii of the two relatively arranged surfaces can be approximately: 6 mm, 10 mm, 8 mm, 9 mm, 7 mm, 3 mm, 4 mm, 10 mm, 26 mm, and 7 mm respectively.

[0174] Exemplarily, for the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 in the second lens group 300, the curvature radii of the two relatively arranged surfaces can be approximately: 7 mm, 12 mm, 7 mm, 8 mm, 15 mm, 10 mm, 8 mm, 23 mm, 10 mm, and 6 mm respectively.

[0175] By adjusting the thickness of the lens, the offset distance of the incident light in the direction perpendicular to the optical axis can be changed, so that the position of the exit point of the incident light on the lens can be changed, and further the propagation path of the light in the second lens group 300 can be adjusted. The thickness of the lenses in the second lens group 300 can be specifically designed according to the performance of the second lens module 3000, and the present application does not limit this.

[0176] Taking the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 included in the second lens group 300 as an example. The thicknesses of the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 can be respectively denoted as: h4, h5, h6, h7, and h8.

[0177] Exemplarily, the thickness h4 of the fourth lens 310 can satisfy: 0.1 mm ≤ h4 ≤ 3.0 mm. For example, h4 can be 0.2 mm, 0.4 mm, 0.6 mm, 1.0 mm, 1.5 mm, or 2.5 mm, etc.

[0178] Exemplarily, the thickness h5 of the fifth lens 320 can satisfy: 0.3 mm ≤ h5 ≤ 3.0 mm. For example, h5 can be 0.4 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, or 2.5 mm, etc.

[0179] Exemplarily, the thickness h6 of the sixth lens 330 can satisfy: 0.3 mm ≤ h6 ≤ 3.0 mm. For example, h6 can be 0.4 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, or 2.5 mm, etc.

[0180] Exemplarily, the thickness h7 of the seventh lens 340 can satisfy: 0.3 mm ≤ h7 ≤ 3.0 mm. For example, h7 can be 0.4 mm, 0.8 mm, 1.0 mm, 1.5 mm, 2.0 mm, or 2.5 mm, etc.

[0181] Exemplarily, the thickness h8 of the eighth lens 350 can satisfy: 0.1 mm ≤ h8 ≤ 5.0 mm. For example, h8 can be 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, or 3.5 mm, etc.

[0182] For a lens group including multiple lenses, the diverging or converging ability of the entire lens group for incident light is related not only to the properties of each lens in the lens group (such as the surface shape, radius of curvature, etc. of the lens) but also to the arrangement of multiple lenses in the lens group. Specifically, for the form in which multiple lenses in the lens group are arranged along the optical axis, the diverging or converging ability of the entire lens group for incident light is related to the distance between adjacent two lenses. By adjusting the spacing between adjacent two lenses, to a certain extent, the overall focal length of the lens group can be adjusted. In addition, by adjusting the distance between the lenses located on both sides in the lens group, to a certain extent, it can also affect the propagation path of incident light within the lens group and the position of the exit point of the incident light after passing through the lens group.

[0183] Taking the second lens group 300 including the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 as an example. The distances between adjacent two of the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 can be respectively denoted as: D4, D5, D6, and D7.

[0184] Exemplarily, the spacing D4 between the fourth lens 310 and the fifth lens 320 can satisfy: 0.01 mm ≤ D4 ≤ 3.0 mm. For example, D4 can be 0.03 mm, 0.10 mm, 0.50 mm, 1.00 mm, 1.50 mm, 2.50 mm, etc.

[0185] Exemplarily, the spacing D5 between the fifth lens 320 and the sixth lens 330 can satisfy: 0.2 mm ≤ D5 ≤ 5.0 mm. For example, D5 can be 0.3 mm, 0.8 mm, 1.0 mm, 2.0 mm, 3.0 mm, 4.0 mm, etc.

[0186] Exemplarily, the spacing D6 between the sixth lens 330 and the seventh lens 340 can satisfy: 0.2 mm ≤ D6 ≤ 3.0 mm. For example, D6 can be 0.3 mm, 0.9 mm, 1.5 mm, 2.0 mm, etc.

[0187] Exemplarily, the spacing D7 between the seventh lens 340 and the eighth lens 350 can satisfy: 0.2 mm ≤ D7 ≤ 10.0 mm. For example, D7 can be 0.3 mm, 0.5 mm, 2.0 mm, 4.0 mm, 6.0 mm, 8.0 mm, etc.

[0188] Changing the material of the lens can change the refractive index of the lens for light, and the refraction angle of the incident light in the lens will thus be different. Therefore, changing the material of the lens can also play a role in adjusting the propagation path of the incident light in the lens to a certain extent. The material or refractive index of the lens in the second lens group 300 can be specifically designed according to the performance of the second lens group 300, and this application does not limit it.

[0189] In some examples, the lenses in the second lens group 300 can be made of plastic or glass, such as: polymethyl methacrylate, polycarbonate, or cycloolefin polymer, etc.

[0190] By selecting lens materials with different refractive indices and Abbe numbers, factors such as the propagation path of the incident light in the lens can be adjusted, thereby affecting the imaging effect of the lens module.

[0191] In some examples, the refractive index of one or more lenses included in the first lens group 100 is n2, and n2 satisfies: 1.3000 ≤ n2 ≤ 1.70000. For example, n2 can take values such as 1.35000, 1.40000, 1.50000, 1.60000, or 1.65000, etc.

[0192] In some examples, the Abbe number of one or more lenses included in the first lens group 100 is V2, and V2 satisfies: 15.00 ≤ V2 ≤ 70.00. For example, V2 can take values such as 20.00, 25.00, 40.00, 50.00, 55.00, or 60.00, etc.

[0193] By adjusting factors such as the number of lenses, the type of lenses, and the size of the lenses in the first lens group 100 and the second lens group 300, as well as the spacing between adjacent lenses in the lens group and the arrangement of the first lens group 100, the first reflection element 200, the second lens group 300, and the photosensitive element 400, a lens module with a certain anti-shake performance and both telephoto and macro shooting capabilities can be achieved.

[0194] Taking Figure 3 the second lens module 3000 shown as an example, G1 represents the focal length of the first lens group 100, and G2 represents the focal length of the second lens group 300. F#(1) represents the aperture size of the lens module in the first shooting state, and F#(2) represents the aperture size of the lens module in the second shooting state. EFL(1) represents the effective focal length of the lens module in the first shooting state, and EFL(2) represents the effective focal length of the lens module in the second shooting state.

[0195] H 0.5 represents half of the diagonal length of the photosensitive element 400. ΔL represents the distance that the second lens group 300 moves along the second optical axis O when the second lens module 3000 switches from the first shooting state to the second shooting state.2 O 2 The moving distance of O, that is, the auto focus stroke of the lens module. S1 represents the distance from the farthest point on the lens on the side of the first lens group 100 away from the first reflecting element 200 to the edge of the first reflecting element 200 on the side away from the first lens group 100. S2 represents the distance that the first lens group 100 moves along the direction perpendicular to the first optical axis O 1 O 1 (or the anti-shake stroke).

[0196] In some examples, the value of F#(1) satisfies: 2.00 ≤ F#(1) ≤ 3.50. Exemplarily, F#(1) can take values such as 2.02, 2.55, 2.97, 3.20, or 3.32, etc.

[0197] In some examples, the value of F#(2) satisfies: 2.00 ≤ F#(2) ≤ 3.50. Exemplarily, F#(1) can take values such as 2.03, 2.51, 2.92, 3.12, or 3.19, etc.

[0198] In some examples, the values of F#(1) and the value of F#(2) have a certain corresponding relationship. Exemplarily, the values of F#(1) and F#(2) can be (3.20, 3.12) or (2.97, 2.92) or (2.07, 2.03) or (3.32, 3.19), etc.

[0199] In some examples, the value of EFL(1) satisfies: 15 ≤ EFL(1) ≤ 30. Exemplarily, EFL(1) can take values such as 19.00, 25.00, or 29.00, etc.

[0200] In some examples, the value of EFL(2) satisfies: 12 ≤ EFL(2) ≤ 30. Exemplarily, EFL(2) can take values such as 14.00, 20.00, 25.00, or 29.00, etc.

[0201] In some examples, the values of EFL(1) and the value of EFL(2) have a certain corresponding relationship. Exemplarily, the values of EFL(1) and EFL(2) can be (19.00, 14.48) or (29.50, 28.54) or (29.49, 22.20), etc.

[0202] In some examples, the magnification factor of the lens module in the second shooting state is β, 0.01 ≤ β ≤ 0.5. Exemplarily, β can take values such as 0.03, 0.1, or 0.3, etc.

[0203] In some examples, for the anti-shake feature of the lens module, the anti-shake angle is γ, where 0.5° ≤ γ ≤ 3.0°. Exemplarily, γ can be 0.8°, 1.0°, 2.0°, etc.

[0204] In some examples, for half of the diagonal length H of the photosensitive element 400 0.5 the value can satisfy: 3.00 mm ≤ H 0.5 ≤ 6.00 mm. Exemplarily, H 0.5 can be 3.70 mm, 4.00 mm, 4.50 mm, 5.00 mm, 5.50 mm, etc.

[0205] In some examples, in the second shooting state, the object distance v(2) of the lens module satisfies: 60 mm ≤ v(2) ≤ 1000 mm. Exemplarily, v(2) can be 65.00 mm, 90.00 mm, 100.00 mm, 400.00 mm, 600.00 mm, 800.00 mm, etc.

[0206] In some examples, for the auto focus stroke ΔL of the lens module, the value satisfies: 1.00 mm ≤ ΔL ≤ 3.00 mm. Exemplarily, ΔL can be 1.40 mm, 1.80 mm, 2.00 mm, 2.40 mm, 2.60 mm, 2.80 mm, etc.

[0207] In some examples, for the total track length S1 of the lens module, the value satisfies: 20.00 mm ≤ S1 ≤ 30.00 mm. Exemplarily, S1 can be 22.00 mm, 24.00 mm, 26.00 mm, 28.00 mm, etc.

[0208] In some examples, for the anti-shake stroke S2 of the lens module, the value satisfies: 0.20 mm ≤ S1 ≤ 0.40 mm. Exemplarily, S1 can be 0.22 mm, 0.24 mm, 0.28 mm, 0.30 mm, 0.35 mm, etc.

[0209] In some examples, for the focal length G1 of the first lens group 100, the value satisfies: 20.00 mm ≤ G1 ≤ 40.00 mm. Exemplarily, G1 can be 24.00 mm, 28.00 mm, 32.00 mm, 36.00 mm, 38.00 mm, etc.

[0210] In some examples, for the focal length G1 of the first lens group 100, G1 and S2 can satisfy: Exemplarily, G1 can be 60 × S2, 80 × S2, 100 × S2, or 120 × S2, etc.

[0211] In some examples, the maximum travel distance of the second lens group 300 moving along the first direction 2001 is ΔL, the total track length of the first lens module 2000 is S1, and S1 and ΔL can satisfy: Exemplarily, ΔL can be 0.05×S1, 0.1×S1, 0.2×S1, 0.3×S1, etc.

[0212] In some examples, the parameters of the lens module can also satisfy the following relationship: And

[0213] Let f1 and f2 represent the focal lengths of the lens in the first lens group 100 that is far from the first reflecting element 200 and the lens that is close to the first reflecting element 200 respectively, and f3 to f7 represent the focal lengths of the 5 lenses in the second lens group 300 from the side close to the first reflecting element 200 to the side far from the first reflecting element 200.

[0214] In some examples, the value of f1 can satisfy: 10.00mm ≤ f1 ≤ 25.00mm. Exemplarily, f1 can be 12.47mm, 16.40mm, 19.68mm, 20.60mm, etc.

[0215] In some examples, the value of f2 can satisfy: -80.00mm ≤ f2 ≤ -20.00mm. Exemplarily, f2 can be -78.68mm, -38.97mm, -31.01mm, -22.31mm, etc.

[0216] In some examples, the value of f3 can satisfy: -100.00mm ≤ f3 ≤ 30.00mm. Exemplarily, f3 can be -82.70mm, -60.00mm, 14.62mm, 18.02mm, 23.16mm, etc.

[0217] In some examples, the value of f4 can satisfy: -60.00mm ≤ f4 ≤ -10.00mm. Exemplarily, f4 can be -53.45mm, -32.73mm, -26.27mm, -15.11mm, -12.48mm, etc.

[0218] In some examples, the value of f5 can satisfy: -5.00mm ≤ f5 ≤ 15.00mm. Exemplarily, f5 can be -11.15mm, -8.56mm, 7.63mm, 8.20mm, 8.91mm, etc.

[0219] In some examples, the value of f6 can satisfy: -150 mm ≤ f6 ≤ 80.00 mm. Exemplarily, f6 can be -144.06 mm, -67.15 mm, -26.08 mm, 5.05 mm, 68.5 mm, etc.

[0220] In some examples, the value of f7 can satisfy: -20.00 mm ≤ f7 ≤ 25.00 mm. Exemplarily, f7 can be -24.67 mm, -15.06 mm, 13.84 mm, 15.66 mm, 20.18 mm, etc.

[0221] Figure 5 FIG. is a schematic structural diagram of a third lens module 4000 provided by an embodiment of the present application. The third lens module 4000 may include a first lens group 100, a first reflection element 200, a second lens group 300, and a photosensitive element 400 in the aforementioned second lens module 3000. The third lens module 4000 further includes at least one extended lens group, and the extended lens group can be used to adjust the light incident on the second lens group 300 or the third lens group can be used to adjust the light exiting from the second lens group 300.

[0222] In some examples, the third lens module 4000 may include a third lens group 4100. The third lens group 4100 is located between the first reflection element 200 and the second lens group 300. The light exiting from the first reflection element 200 can be incident on the second lens group 300 after passing through the third lens group 4100 and finally projected onto the photosensitive element 400.

[0223] In some examples, the third lens module 4000 may include a third lens group 4100. The third lens group 4100 is located between the second lens group 300 and the photosensitive element 400. The light exiting from the second lens group 300 is incident on the photosensitive element 400 after passing through the third lens group 4100.

[0224] In some examples, the third lens module 4000 may include two extended lens groups, or rather, the third lens module 4000 may include a third lens group 4100 and a fourth lens group 4200. Among them, the third lens group 4100 is located between the first reflection element 200 and the second lens group 300, and the fourth lens group 4200 is located between the second lens group 300 and the photosensitive element 400. The light exiting from the first reflection element 200 is incident on the second lens group 300 after passing through the third lens group 4100, and is incident on the fourth lens group 4200 after passing through the second lens group 300. The light exiting from the fourth lens group 4200 can be incident on the photosensitive element 400.

[0225] The extended lens groups in the above different cases may each include one or more lenses. Exemplarily, as Figure 5 shown, the third lens group 4100 may include two lenses, and the fourth lens group 4200 may include one lens.

[0226] The surface shape of the lenses included in the extended lens group may be spherical or aspherical. Exemplarily, as Figure 5 shown, the surface shapes of the two lenses in the third lens group 4100 are both aspherical, and the surface of the lens in the fourth lens group 4200 that is away from the photosensitive element 400 is aspherical, while the surface that is close to the photosensitive element 400 is spherical.

[0227] The extended lens group may have a positive optical power or a negative optical power. In the case where the extended lens group includes multiple lenses, the different lenses may have a positive optical power or a negative optical power, and the present application does not limit this. Specifically, the positive and negative optical powers of the different lenses may be determined according to the design performance of the extended lens group. Corresponding descriptions can refer to the descriptions of the design of the positive and negative optical powers of each lens in the case where the first lens group 100 or the second lens group 300 includes multiple lenses in the foregoing text. For the sake of brevity, no further elaboration is provided here.

[0228] For the case where the extended lens group includes multiple lenses, factors such as the selection of the surface shape of each lens, the setting of the surface curvature radius, the thickness of the lens, the distance between two adjacent lenses, and the material for preparing the lens will all affect the divergence or convergence effect of the extended lens group on the incident light, thereby affecting the propagation of the incident light within the third lens module 4000 and the imaging quality of the lens module. The setting methods for these control factors are similar to the relevant descriptions of the first lens group 100 and the second lens group 300 in the foregoing text. Specifically, reference can be made to the descriptions in the foregoing text. For the sake of brevity, no further elaboration is provided here.

[0229] In some examples, the position of the extended lens group in the third lens module 4000 is relatively fixed, or rather, the position of the extended lens group relative to the photosensitive element 400 is relatively fixed. During the movement of the second lens group 300 along the second optical axis O 2 O 2 in the third lens module 4000, the distance between the second lens group 300 and the extended lens group will change, and the position of the incident point of the light on the second lens group 300 and / or the position of the incident point of the light on the photosensitive element 400 will change accordingly. Thus, the movement of the second lens group 300 along the second optical axis O 2 O 2 can achieve the zoom function of the third lens module 4000.

[0230] The extended lens group can adjust the propagation path of the light incident on the second lens group 300, or the extended lens group can adjust the propagation path of the light emitted from the second lens group 300, or the simultaneous setting of multiple extended lens groups can adjust both the propagation path of the light incident on the second lens group 300 and the propagation path of the light emitted from the second lens group 300. The setting of the extended lens group increases the adjustable dimension of the propagation path of the light incident on the third lens module 4000, which is beneficial to making the imaging of the third lens module 4000 on the photosensitive element 400 clearer and improving the imaging quality.

[0231] Figure 6 FIG. 4 is a schematic structural diagram of a fourth lens module 5000 provided by an embodiment of the present application. The fourth lens module 5000 may include the first lens group 100, the first reflecting element 200, the second lens group 300, and the photosensitive element 400 in the foregoing second lens module 3000. The fourth lens module 5000 may further include a second reflecting element, and the second reflecting element may be used to adjust the propagation path of the light emitted from the second lens group 300.

[0232] In some examples, as Figure 6 shown, in the fourth lens module 5000, the second reflecting element 5100 is located between the second lens group 300 and the photosensitive element 400. Or, the light emitted from the second lens group 300 can be incident on the photosensitive element 400 after being reflected by the second reflecting element 5100. The second reflecting element 5100 may include a second reflecting surface, and the second reflecting surface may be inclined with respect to the second optical axis O 2 O 2 The plane where the photosensitive element 400 is located is inclined with respect to the second optical axis O 2 O 2 The light emitted from the second lens group 300 is incident on the photosensitive element 400 after being reflected by the second reflecting surface.

[0233] Exemplarily, the plane where the photosensitive element 400 is located may be parallel to the second optical axis O 2 O 2 That is, the normal line of the plane where the photosensitive element 400 is located is parallel to the second optical axis O 2 O 2 parallel.

[0234] In some examples, the second reflecting element 5100 may be one or more of a plane mirror, a right-angle prism mirror, an off-axis paraboloid mirror, a hollow roof prism mirror, etc. Exemplarily, the second reflecting element 5100 may be a right-angle prism reflecting element. Exemplarily, Figure 6 in the second reflecting element 5100 is an aspherical mirror.

[0235] The setting of the second reflecting element 5100 can adjust the propagation path of the light incident on the photosensitive element 400. For example, the light originally propagating along the second optical axis O 2 O 2 is adjusted to propagate in a direction perpendicular to the second optical axis O 2 O 2 . The setting of the second reflecting element 5100 can make the position of the photosensitive element 400 in the fourth lens module 5000 more flexible, which is more conducive to improving the utilization rate of the space occupied by the fourth lens module 5000, and is conducive to reducing the space occupied by the lens module 5000 in the direction of the second optical axis O 2 O 2 . In addition, the second reflecting element 5100 can also increase the propagation optical path of the light incident on the photosensitive element 400, which is conducive to increasing the amount of light that the photosensitive element 400 can capture to a certain extent and is conducive to improving the imaging quality.

[0236] Similar to the first reflecting element 200 included in the second lens module 3000, the shape, size, the distance between the second reflecting element 5100 and the second lens group 300, and the distance between the second reflecting element 5100 and the photosensitive element 400 can all affect the propagation path of the incident light in the fourth lens module 5000, etc., thereby affecting the imaging quality of the lens module.

[0237] Taking the second reflecting element 5100 as a diameter prism reflecting element as an example, the thickness of the second reflecting element 5100 can be denoted as hr2, and hr2 can satisfy: 1.00 mm ≤ hr2 ≤ 10.0 mm. For example, hr2 can be 3.00 mm, 5.00 mm, 6.00 mm, 6.50 mm, 7.00 mm, 8.00 mm, or 9.00 mm, etc.

[0238] Taking the second reflecting element 5100 as a diameter prism reflecting element as an example, the distance between the second reflecting element 5100 and the second lens group 300 and the distance between the second reflecting element 5100 and the photosensitive element 400 can be adjusted according to the performance requirements of the lens module and in combination with the layout of each element.

[0239] In some examples, the fourth lens module 5000 may further include the extended lens group included in the foregoing third lens module 4000, and this extended lens group can be used to adjust the propagation path of the incident light incident on the second lens group 300 and / or the propagation path of the outgoing light exiting from the second lens group 300.

[0240] Exemplarily, this extended lens group can be disposed between the first reflecting element 200 and the second lens group 300 and is used to adjust the propagation path of the incident light incident on the second lens group 300.

[0241] Similarly, by way of example, the extended lens group can be disposed between the second lens group 300 and the second reflecting element 5100, and is used to adjust the propagation path of the outgoing light emitted by the second lens group 300.

[0242] Still by way of example, the number of the extended lens groups can be two, and they are respectively disposed between the first reflecting element 200 and the second lens group 300, and between the second lens group 300 and the second reflecting element 5100. Thus, the extended lens groups adjust the propagation paths of both the incident light and the outgoing light of the second lens group 300.

[0243] Figure 7 This is the fifth lens module 6000 provided by an embodiment of the present application. The fifth lens module 6000 includes the first lens group 100, the first reflecting element 200, the second lens group 300, the infrared cut-off filter 500, and the photosensitive element 400 in the foregoing first lens module 2000.

[0244] The first lens group 100 has a positive optical power. The first lens group 100 includes a first lens 110 and a second lens 120. The first lens 110 has a positive optical power, and the second lens 120 has a negative optical power.

[0245] In some examples, the thickness of the first lens 110 is about 2.18 mm, the thickness of the second lens 120 is about 0.46 mm, and the distance between the first lens 110 and the second lens 120 is about 0.03 mm.

[0246] In some examples, the Abbe number of the first lens 110 is about 74.54, and the refractive index is about 1.5021. The Abbe number of the second lens 120 is about 67.05, and the refractive index is about 1.1922.

[0247] In some examples, the first lens 110 includes a first mirror surface and a second mirror surface which are oppositely arranged, the second lens 120 includes a third mirror surface and a fourth mirror surface which are oppositely arranged, and the first mirror surface, the second mirror surface, the third mirror surface, and the fourth mirror surface are all aspherical surfaces. The shape of the aspherical surface can be determined according to the foregoing formula (1).

[0248] Exemplarily, as Figure 7 shown, the first mirror surface bulges towards the negative x-axis direction, the radius of curvature of the first mirror surface is about 22.05 mm, the second mirror surface bulges towards the positive x-axis direction, and the radius of curvature of the second mirror surface is about 43.69 mm.

[0249] The third mirror surface bulges towards the positive x-axis direction, the radius of curvature of the third mirror surface is about 95.39 mm, the fourth mirror surface bulges towards the negative x-axis direction, and the radius of curvature of the fourth mirror surface is about 32.35 mm.

[0250] The first lens 110 and the second lens 120 are relatively fixed, and the first lens group 100 can move in a plane perpendicular to its optical axis, thereby realizing the anti-shake function of the lens module.

[0251] The second lens group 300 includes a fourth lens 310, a fifth lens 320, a sixth lens 330, a seventh lens 340, and an eighth lens 350. The fourth lens 310 has a positive optical power, the fifth lens 320 has a negative optical power, the sixth lens 330 has a negative optical power, the seventh lens 340 has a negative optical power, and the eighth lens has a positive optical power.

[0252] The second lens group 300 has a positive optical power. The positions of the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 included in the second lens group 300 are relatively fixed, and the second lens group 300 can move closer to or farther away from the photosensitive element 400 along its optical axis. In the macro shooting mode, the second lens group 300 can move away from the photosensitive element 400 along the optical axis. In the telephoto shooting mode, the second lens group 300 can move closer to the photosensitive element 400 along the optical axis.

[0253] In some examples, the thickness of the fourth lens 310 is about 2.37 mm, the thicknesses of the fifth lens 320, the sixth lens 330, and the seventh lens 340 are all about 0.40 mm, and the thickness of the eighth lens 350 is about 2.48 mm. The distance between the fourth lens 310 and the fifth lens 320 is about 1.43 mm, the distance between the fifth lens 320 and the sixth lens 330 is about 3.91 mm, the distance between the sixth lens 330 and the seventh lens 340 is about 0.89 mm, and the distance between the seventh lens 340 and the eighth lens 350 is about 2.96 mm.

[0254] In some examples, the Abbe number of the fourth lens 310 is about 53.45, and the refractive index is about 1.5604. The Abbe number of the fifth lens 320 is about 53.45, and the refractive index is about 1.5604. The Abbe number of the sixth lens 330 is about 53.45, and the refractive index is about 1.5604. The Abbe number of the seventh lens 340 is about 67.05, and the refractive index is about 1.1922. The Abbe number of the eighth lens 350 is about 57.47, and the refractive index is about 1.3375.

[0255] In some examples, the fourth lens 310 includes a fifth mirror surface and a sixth mirror surface that are oppositely arranged, the fifth lens 320 includes a seventh mirror surface and an eighth mirror surface that are oppositely arranged, the sixth lens 330 includes a ninth mirror surface and a tenth mirror surface that are oppositely arranged, the seventh lens 340 includes an eleventh mirror surface and a twelfth mirror surface that are oppositely arranged, and the eighth lens 350 includes a thirteenth mirror surface and a fourteenth mirror surface that are oppositely arranged. All of the above mirror surfaces are aspherical, and the shape of the aspherical surface can be determined according to the foregoing formula (1).

[0256] Exemplarily, as Figure 7 shown, the fifth mirror surface bulges in the positive y-axis direction, and the radius of curvature is about 7.44 mm. The sixth mirror surface bulges in the positive y-axis direction, and the radius of curvature is about 11.86 mm.

[0257] The seventh mirror surface bulges in the positive y-axis direction, and the radius of curvature is about 6.82 mm. The eighth mirror surface bulges in the positive y-axis direction, and the radius of curvature is about 8.00 mm.

[0258] The ninth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 14.72 mm. The tenth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 10.11 mm.

[0259] The eleventh mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 7.69 mm. The twelfth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 22.92 mm.

[0260] The thirteenth mirror surface bulges in the positive y-axis direction, and the radius of curvature is about 9.97 mm. The fourteenth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 5.94 mm.

[0261] Light from the object to be photographed is incident on the first reflecting element 200 successively through the first lens 110 and the second lens 120 of the first lens group 100. After being turned by 90°, it is incident on the second lens group 300, and successively passes through the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350, and then passes through the infrared cut-off filter 500 and is incident on the photosensitive element 400.

[0262] In some examples, the distance between the first lens group 100 and the first reflecting element 200 is about 0.63 mm, the distance between the first reflecting element 200 and the second lens group 300 is about 2.57 mm, and the distance between the second lens group 300 and the photosensitive element 400 is about 1.04 mm.

[0263] In some examples, the surfaces of the multiple lenses included in the first lens group 100 and the second lens group 300 can all be aspherical, and the specific shape of the lens surface can be determined according to the foregoing formula (1). Exemplarily, the aspheric coefficients of the multiple lenses are shown in the following table.

[0264] Table 1

[0265] s2 s3 s4 s5 s8 s9 s10 k 0 0 0 0 0 0 0 A4 -0.00004 -0.000618 -0.000618 0.0023692 0.0002001 0.0011891 0.0093907 A6 -0.000005 0.0001029 0.0001029 -0.00012 -0.000026 -0.000061 -0.001772 A8 3.60E-07 -0.000011 -0.000011 0.000005 0.000004 -0.00004 0.0001915 A10 -6.25E-09 1.00E-06 1.00E-06 -1.10E-07 -1.00E-06 1.00E-05 -1.40E-05 A12 -7.66E-10 -2.66E-08 -2.66E-08 1.59E-09 1.39E-07 -6.21E-08 1.00E-06 A14 5.29E-11 6.87E-10 6.87E-10 -1.26E-11 -9.45E-09 1.93E-09 -3.03E-08 A16 -1.39E-12 -1.11E-11 -1.11E-11 4.36E-14 3.23E-10 -3.09E-11 4.19E-10 A18 1.63E-14 1.00E-13 1.00E-13 0.00E+00 -5.04E-12 2.12E-13 7.70E-12 A20 -7.00E-17 -3.89E-16 -3.89E-16 0.00E+00 2.30E-14 0.00E+00 -2.14E-13 A22 0 0 0 0 0 0 0 A24 0 0 0 0 0 0 0 A26 0 0 0 0 0 0 0 A28 0 0 0 0 0 0 0 A30 0 0 0 0 0 0 0 s11 s12 s13 s14 s15 s16 s17 k 0 0 0 0 0 0 0 A4 0.0083188 -0.008357 -0.009748 -0.001415 0.0057281 0.0022156 -0.000063 A6 -0.001867 -0.001694 -0.00367 -0.002548 -0.000066 -0.000027 -0.000034 A8 0.0001833 0.0005817 0.0002479 -0.000998 -0.007389 1.62E-07 4.00E-06 A10 -1.00E-05 -2.40E-05 -4.00E-05 -8.00E-06 5.00E-05 -5.42E-10 -8.11E-08 A12 3.32E-07 -1.00E-05 1.70E-05 7.20E-05 1.05E-04 1.03E-12 8.40E-10 A14 -6.80E-09 2.00E-06 -2.00E-06 -1.20E-05 -3.10E-05 0.00E+00 -1.14E-12 A16 8.29E-11 -1.12E-07 1.36E-07 1.00E-06 4.00E-06 0.00E+00 0.00E+00 A18 -4.92E-13 2.77E-09 -3.05E-09 -2.40E-08 -2.31E-07 0.00E+00 0.00E+00 A20 0.00E+00 0.00E+00 0.00E+00 2.16E-10 4.95E-09 0.00E+00 0.00E+00 A22 0 0 0 0.00E+00 3.21E-11 0.00E+00 0 A24 0 0 0 0 0 0 0 A26 0 0 0 0 0 0 0 A28 0 0 0 0 0 0 0 A30 0 0 0 0 0 0 0

[0266] By setting the lens parameters and the arrangement of the lens groups in the lens module, the optical parameters of the fifth lens module 6000 can be obtained as shown in Table 2 below. Among them, the focal length of the first lens group 100 is 39.98 mm, and its anti-shake stroke is 0.35 mm, and the ratio of the two is about 114. The distance ΔL that the second lens group 300 can be adjusted along the optical axis is 1.77 mm, and the total track length of the lens module is 26.00 mm, and the ratio of the two is about 0.07. In the macro shooting mode of this lens module, the magnification can be taken from 0.1 to 0.5, and the anti-shake angle can be taken from 0.5° to 3.0°.

[0267] Table 2

[0268]

[0269] Figure 8 The sixth lens module 7000 provided by the embodiment of the present application, the sixth lens module 7000 includes the first lens group 100, the first reflection element 200, the second lens group 300, the second reflection element 5100, the infrared cut-off filter 500, and the photosensitive element 400 in the foregoing first lens module 2000.

[0270] The first lens group 100 includes a first lens 110 and a second lens 120. The first lens 110 has a positive optical power, and the second lens 120 has a negative optical power.

[0271] In some examples, the thickness of the first lens 110 is about 2.87 mm, the thickness of the second lens 120 is about 0.29 mm, and the distance between the first lens 110 and the second lens 120 is about 0.03 mm.

[0272] In some examples, the Abbe number of the first lens 110 is about 75.03, and the refractive index is about 1.4999. The Abbe number of the second lens 120 is about 67.05, and the refractive index is about 1.1922.

[0273] In some examples, the first lens 110 includes a first mirror surface and a second mirror surface arranged oppositely, the second lens 120 includes a third mirror surface and a fourth mirror surface arranged oppositely, and the first mirror surface, the second mirror surface, the third mirror surface, and the fourth mirror surface are all aspherical, and the shape of the aspherical surface can be determined according to the foregoing formula (1).

[0274] Exemplarily, as Figure 8 shown, the first mirror surface protrudes in the positive x-axis direction, and the radius of curvature of the first mirror surface is about 22.29 mm. The second mirror surface protrudes in the positive x-axis direction, and the radius of curvature of the second mirror surface is about 9.36 mm.

[0275] The third mirror surface protrudes in the positive x-axis direction, and the radius of curvature of the third mirror surface is about 10.33 mm. The fourth mirror surface protrudes in the positive x-axis direction, and the radius of curvature of the fourth mirror surface is about 11.24 mm.

[0276] The second lens group 300 includes a fourth lens 310, a fifth lens 320, a sixth lens 330, a seventh lens 340, and an eighth lens 350. The fourth lens 310 has a negative optical power, the fifth lens 320 has a negative optical power, the sixth lens 330 has a positive optical power, the seventh lens 340 has a negative optical power, and the eighth lens has a negative optical power.

[0277] In some examples, the thickness of the fourth lens 310 is about 0.28 mm, the thickness of the fifth lens 320 is about 1.26 mm, the thickness of the sixth lens 330 is about 2.84 mm, the thickness of the seventh lens 340 is about 2.70 mm, and the thickness of the eighth lens 350 is about 0.69 mm. The distance between the fourth lens 310 and the fifth lens 320 is about 0.03 mm, the distance between the fifth lens 320 and the sixth lens 330 is about 0.60 mm, the distance between the sixth lens 330 and the seventh lens 340 is about 0.67 mm, and the distance between the seventh lens 340 and the eighth lens 350 is about 0.27 mm.

[0278] In some examples, the Abbe number of the fourth lens 310 is about 56.97, and the refractive index is about 1.3538. The Abbe number of the fifth lens 320 is about 63.40, and the refractive index is about 1.2263. The Abbe numbers of the sixth lens 330, the seventh lens 340, and the eighth lens 350 are all about 53.45, and the refractive indices are all about 1.5604.

[0279] In some examples, the fourth lens 310 includes a fifth mirror surface and a sixth mirror surface that are oppositely arranged, the fifth lens 320 includes a seventh mirror surface and an eighth mirror surface that are oppositely arranged, the sixth lens 330 includes a ninth mirror surface and a tenth mirror surface that are oppositely arranged, the seventh lens 340 includes an eleventh mirror surface and a twelfth mirror surface that are oppositely arranged, the eighth lens 350 includes a thirteenth mirror surface and a fourteenth mirror surface that are oppositely arranged. All of the above-mentioned mirror surfaces are aspherical, and the shape of the aspherical surface can be determined according to the foregoing formula (1).

[0280] Exemplarily, as Figure 8As shown, the fifth mirror bulges in the negative y-axis direction with a curvature radius of about 18.93 mm, and the sixth mirror bulges in the negative y-axis direction with a curvature radius of about 23.62 mm.

[0281] The seventh mirror bulges in the positive y-axis direction with a curvature radius of about 7.19 mm, and the eighth mirror bulges in the positive y-axis direction with a curvature radius of about 5.05 mm.

[0282] The ninth mirror bulges in the positive y-axis direction with a curvature radius of about 8.12 mm, and the tenth mirror bulges in the negative y-axis direction with a curvature radius of about 10.80 mm.

[0283] The eleventh mirror bulges in the negative y-axis direction with a curvature radius of about 18.83 mm, and the twelfth mirror bulges in the positive y-axis direction with a curvature radius of about 22.04 mm.

[0284] The thirteenth mirror bulges in the positive y-axis direction with a curvature radius of about 12.37 mm, and the fourteenth mirror bulges in the positive y-axis direction with a curvature radius of about 25.19 mm.

[0285] Light from the object to be photographed sequentially passes through the first lens 110 and the second lens 120 of the first lens group 100 and is incident on the first reflection element 200. After a 90° turn, it is incident on the second lens group 300, and sequentially passes through the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350 and then is incident on the second reflection element 5100. After a 90° turn, it passes through the infrared cut-off filter 500 and is incident on the photosensitive element 400.

[0286] In some examples, the distance between the first lens group 100 and the first reflection element 200 is about 0.41 mm, the distance between the first reflection element 200 and the second lens group 300 is about 3.01 mm, and the distance between the second lens group 300 and the photosensitive element 400 is about 0.95 mm.

[0287] In some examples, the surfaces of multiple lenses included in the first lens group 100 and the second lens group 300 can all be aspherical, and the specific shape of the lens surface can be determined according to the aforementioned formula (1). Exemplarily, the aspherical coefficients of multiple lenses are shown in the following table.

[0288] Table 3

[0289]

[0290] By setting the lens parameters and the arrangement of lens groups in the lens module, the optical parameters of the sixth lens module 7000 can be obtained as shown in Table 4 below. Among them, the focal length of the first lens group 100 is 28.51 mm, and its anti-shake stroke is 0.30 mm, and the ratio of the two is about 95. The distance ΔL that the second lens group 300 can be adjusted along the optical axis is 2.60 mm, and the total track length of the lens module is 28.98 mm, and the ratio of the two is about 0.09. In the macro shooting mode of this lens module, the magnification can be taken from 0.1 to 0.5, and the anti-shake angle can be taken from 0.5° to 3.0°.

[0291] Table 4

[0292]

[0293] Figure 9 It is the seventh lens module 8000 provided by the embodiment of the present application. The seventh lens module 8000 includes the first lens group 100, the first reflecting element 200, the second lens group 300, the infrared cut-off filter 500, and the photosensitive element 400 in the foregoing first lens module 2000.

[0294] The first lens group 100 includes a first lens 110 and a second lens 120. The first lens 110 has a positive optical power, and the second lens 120 has a negative optical power.

[0295] In some examples, the thickness of the first lens 110 is about 1.68 mm, the thickness of the second lens 120 is about 0.26 mm, and the distance between the first lens 110 and the second lens 120 is about 0.03 mm.

[0296] In some examples, the Abbe number of the first lens 110 is about 70.87, and the refractive index is about 1.5201. The Abbe number of the second lens 120 is about 61.57, and the refractive index is about 1.2521.

[0297] In some examples, the first lens 110 includes a first mirror surface and a second mirror surface arranged oppositely, the second lens 120 includes a third mirror surface and a fourth mirror surface arranged oppositely, and the first mirror surface, the second mirror surface, the third mirror surface, and the fourth mirror surface are all aspherical surfaces, and the shape of the aspherical surface can be determined according to the foregoing formula (1).

[0298] Exemplarily, as Figure 9 shown, the first mirror surface bulges in the negative x-axis direction, the radius of curvature of the first mirror surface is about 8.60 mm, the second mirror surface bulges in the negative x-axis direction, and the radius of curvature of the second mirror surface is about 391.94 mm.

[0299] The third mirror surface bulges in the negative x-axis direction, and the radius of curvature of the third mirror surface is about 14.50 mm. The fourth mirror surface bulges in the negative x-axis direction, and the radius of curvature of the fourth mirror surface is about 6.86 mm.

[0300] The second lens group 300 includes a fourth lens 310, a fifth lens 320, a sixth lens 330, a seventh lens 340, and an eighth lens 350. The fourth lens 310 has a positive optical power, the fifth lens 320 has a negative optical power, the sixth lens 330 has a positive optical power, the seventh lens 340 has a negative optical power, and the eighth lens has a positive optical power.

[0301] In some examples, the thickness of the fourth lens 310 is about 0.30 mm, the thickness of the fifth lens 320 is about 0.28 mm, the thickness of the sixth lens 330 is about 0.97 mm, the thickness of the seventh lens 340 is about 0.52 mm, and the thickness of the eighth lens 350 is about 3.43 mm. The distance between the fourth lens 310 and the fifth lens 320 is about 0.03 mm, the distance between the fifth lens 320 and the sixth lens 330 is about 1.26 mm, the distance between the sixth lens 330 and the seventh lens 340 is about 1.57 mm, and the distance between the seventh lens 340 and the eighth lens 350 is about 6.51 mm.

[0302] In some examples, the Abbe number of the fourth lens 310 is about 62.76, and the refractive index is about 1.2351. The Abbe number of the fifth lens 320 is about 63.31, and the refractive index is about 1.2281. The Abbe numbers of the sixth lens 330 and the seventh lens 340 are both about 53.45, and the refractive indices are both about 1.5604. The Abbe number of the eighth lens 350 is about 60.60, and the refractive index is about 1.2651.

[0303] In some examples, the fourth lens 310 includes a fifth mirror surface and a sixth mirror surface that are oppositely arranged, the fifth lens 320 includes a seventh mirror surface and an eighth mirror surface that are oppositely arranged, the sixth lens 330 includes a ninth mirror surface and a tenth mirror surface that are oppositely arranged, the seventh lens 340 includes an eleventh mirror surface and a twelfth mirror surface that are oppositely arranged, and the eighth lens 350 includes a thirteenth mirror surface and a fourteenth mirror surface that are oppositely arranged. These mirror surfaces are all aspherical, and the shape of the aspherical surface can be determined according to the foregoing formula (1).

[0304] Exemplarily, as Figure 9 shown, the fifth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 12.13 mm. The sixth mirror surface bulges in the negative y-axis direction, and the radius of curvature is about 63.40 mm.

[0305] The seventh mirror surface protrudes in the positive y-axis direction with a curvature radius of about 6.63 mm, and the eighth mirror surface protrudes in the positive y-axis direction with a curvature radius of about 8.29 mm.

[0306] The ninth mirror surface protrudes in the positive y-axis direction with a curvature radius of about 14.24 mm, and the tenth mirror surface protrudes in the negative y-axis direction with a curvature radius of about 7.02 mm.

[0307] The eleventh mirror surface protrudes in the positive y-axis direction with a curvature radius of about 38.29 mm, and the twelfth mirror surface protrudes in the positive y-axis direction with a curvature radius of about 5.71 mm.

[0308] The thirteenth mirror surface protrudes in the negative y-axis direction with a curvature radius of about 4.52 mm, and the fourteenth mirror surface protrudes in the negative y-axis direction with a curvature radius of about 12.62 mm.

[0309] Light from the object to be photographed sequentially passes through the first lens 110 and the second lens 120 of the first lens group 100 and is incident on the first reflection element 200. After a 90° turn, it is incident on the second lens group 300 and sequentially passes through the fourth lens 310, the fifth lens 320, the sixth lens 330, the seventh lens 340, and the eighth lens 350, and then passes through the infrared cut-off filter 500 and is incident on the photosensitive element 400.

[0310] In some examples, the distance between the first lens group 100 and the first reflection element 200 is about 0.41 mm, the distance between the first reflection element 200 and the second lens group 300 is about 3.01 mm, and the distance between the second lens group 300 and the photosensitive element 400 is about 0.95 mm.

[0311] In some examples, the surfaces of multiple lenses included in the first lens group 100 and the second lens group 300 can all be aspherical, and the specific shape of the lens surface can be determined according to the aforementioned formula (1). Exemplarily, the aspherical coefficients of multiple lenses are shown in the following table.

[0312] Table 5

[0313]

[0314] By setting the lens parameters and the arrangement of lens groups in the lens module, the optical parameters of the seventh lens module 8000 can be obtained as shown in Table 6 below. Among them, the focal length of the first lens group 100 is 24.68 mm, and its anti-shake stroke is 0.216 mm, and the ratio of the two is about 114. The adjustable distance ΔL of the second lens group 300 along the optical axis is 1.43 mm, and the total track length of the lens module is 24.00 mm, and the ratio of the two is about 0.06. In the macro shooting mode of this lens module, the magnification can range from 0.1 to 0.5, and the anti-shake angle can range from 0.5° to 3.0°.

[0315] Table 6

[0316]

[0317] Figure 10 and Figure 11 The following shows the schematic diagrams of the first lens module 2000 provided by this application in the first shooting state and the second shooting state. For the convenience of explanation, the first reflection element 200 is not shown in the figure. The position of the first lens group 100 is relatively fixed in the optical axis direction, and the second lens group 300 can move closer to or away from the photosensitive element 400 along the optical axis. The following combines Figure 10 and Figure 11 to further illustrate the focusing function of the lens module provided by the embodiments of this application.

[0318] Let EFL represent the effective focal length of the first lens module 2000, G1 and G2 represent the focal lengths of the first lens group 100 and the second lens group 300 respectively, u and v represent the image distance and object distance of the first lens module 2000 respectively, and d represents the distance between the first lens group 100 and the second lens group 300.

[0319] According to the imaging formula, both u and v are positively correlated with EFL, and u and v are negatively correlated with each other. Also according to the imaging principle, for the focal length EFL of the first lens module 2000 composed of multiple lenses, it is positively correlated with the distance d between the first lens group 100 and the second lens group 300.

[0320] In Figure 10 the first shooting state shown, the second lens group can move in the direction closer to the photosensitive element 400. After adjustment, the distance between the first lens group and the second lens group is denoted as d1, then the adjusted distance d1 is greater than the initial distance d0. Since d is positively correlated with EFL, when d = d1, EFL increases from the initial value EFL(0) to EFL(1), that is: EFL(1) > EFL(0).

[0321] During the process of the first lens group approaching the photosensitive element, the distance u between the lenses of the lens module gradually decreases. After adjustment, the distance is denoted as u1. Then, the adjusted distance u1 is less than the initial value u0 of the distance.

[0322] The increase in the focal length of the first lens module 2000 and the decrease in the distance between the lenses can both increase its object distance. In other words, adjusting the distance between the second lens group and the first lens group allows for a greater adjustment range of the object distance of the first lens module 2000. Thus, the first lens module 2000 can capture objects that are farther away.

[0323] In Figure 11 In the second shooting state shown, the second lens group 300 can move away from the photosensitive element 400. After adjustment, the distance between the first lens group and the second lens group is denoted as d2. Then, the adjusted distance d2 is less than the initial value d0 of the distance. Since d is positively correlated with EFL, when d = d2, EFL decreases from the initial value EFL(0) to EFL(2), that is: EFL(2) < EFL(0).

[0324] During the process of the second lens group 300 approaching the photosensitive element, the distance u between the lenses of the first lens module 2000 gradually decreases. After adjustment, the distance is denoted as u2. Then, the adjusted distance u2 is greater than the initial value u0 of the distance.

[0325] The decrease in the focal length of the first lens module 2000 and the increase in the distance between the lenses can both decrease its object distance. In other words, adjusting the distance between the second lens group 300 and the first lens group 100 allows for a greater adjustment range of the object distance of the first lens module 2000. Thus, the first lens module 2000 can capture objects that are closer.

[0326] As described above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A lens module, characterized in that, comprising: a first lens group, a first reflection element, a second lens group, and a photosensitive element, the first lens group includes one or more lenses, the distance between the first lens group and the first reflection element in a first direction is fixed, the first direction is the axis of the first lens group, the first lens group is configured to be movable in a first plane, and the first plane is perpendicular to the first direction; the second lens group includes one or more lenses, the second lens group is configured to be movable closer to or farther away from the first reflection element along a second direction, and the second direction is the axis of the second lens group; the first reflection element and the photosensitive element are relatively fixed; wherein, incident light passes through the first lens group and is incident on the first reflection element, is reflected by the first reflection element and then is incident on the second lens group, and passes through the second lens group and then is incident on the photosensitive element.

2. The lens module according to claim 1, characterized in that, the lens module further includes a first platform, the first lens group is fixedly connected to the first platform, and the first platform is used to drive the first lens group to move in the first plane.

3. The lens module according to claim 1 or 2, characterized in that, the focal length of the first lens group is G1, the maximum travel of the first lens group in the first plane is 2×Ld, and G1 and Ld satisfy:

4. The lens module according to any one of claims 1 to 3, characterized in that, the lens module further includes a second platform, the second lens group is fixedly connected to the second platform, and the second platform is used to drive the second lens group to move closer to or farther away from the first reflection element along the second direction.

5. The lens module according to any one of claims 1 to 4, characterized in that, the total track length of the lens module is Lt, the maximum travel of the second lens group in the second direction is Mv, and Lt and Mv satisfy:

6. The lens module according to any one of claims 1 to 5, characterized in that, the first lens group has a positive optical power.

7. The lens module according to any one of claims 1 to 6, characterized in that, the optical axis of the first lens group is perpendicular to the optical axis of the second lens group.

8. The lens module according to any one of claims 1 to 7, characterized in that, the lens module further includes a third lens group, the third lens group includes one or more lenses, the third lens group is located on the side of the second lens group close to the first reflection element, and the third lens group is relatively fixed to the first reflection element.

9. The lens module according to any one of claims 1 to 8, characterized in that, the lens module further includes a fourth lens group, the fourth lens group includes one or more lenses, the fourth lens group is located on the side of the second lens group far from the first reflection element, and the fourth lens group is relatively fixed to the first reflection element.

10. The lens module according to any one of claims 1 to 9, characterized in that, The lens module further includes a second reflecting element, which is located on a side of the second lens group away from the first reflecting element, and the second reflecting element is disposed close to the photosensitive element.

11. The lens module according to any one of claims 1 to 10, wherein, the lens module further includes an infrared cut-off filter, which is located on a side of the second lens group away from the first reflecting element, and the infrared cut-off filter is disposed close to the photosensitive element.

12. An electronic device, wherein, it includes a middle frame and the lens module according to any one of claims 1 to 11, and the lens module is fixedly connected to the middle frame.

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