Camera module and electronic equipment
By designing a movable first lens and a second reflector, keeping the relative position of the lens group unchanged, the problem of optical axis deviation during the zooming process of the existing camera module is solved, and optical zoom and improved imaging effects are achieved.
Patent Information
- Application Number
- CN202421307029.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the zooming process of the existing camera module, the forward and backward movement of the lens group causes a change in the positional relationship in the direction of the optical axis, affecting the imaging effect.
A camera module is designed, including a first lens and a second reflector, the first lens includes a first lens group and a second lens group, and the optical axis directions are arranged in parallel and in a vertical direction. The first lens is movable in the optical axis direction, and the relative positional relationship between the first lens group and the second lens group remains unchanged.
The optical path length is changed through the movement of the first lens, the optical zoom of the camera module is realized, the zoom stroke is reduced, and the relative positional relationship of the lens group remains unchanged, avoid optical axis deviation, and improve the imaging effect.
Smart Images
Figure CN222638618U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of terminal technology, and in particular to a camera module and an electronic device. Background Art
[0002] At present, mainstream cameras installed in electronic devices on the market usually include multiple lens groups arranged along the optical axis, and zooming is achieved by moving two of the lens groups in the direction of the optical axis.
[0003] However, during the zooming process, the forward and backward movement of the two lens groups in the direction of the optical axis will inevitably cause a change in the positional relationship between the two in a direction perpendicular to the optical axis, such as a 5° deviation in the up and down direction, which affects the imaging effect. Utility Model Content
[0004] The present disclosure provides a camera module and an electronic device to solve the deficiencies in the related art.
[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a camera module, including:
[0006] a first reflective member;
[0007] a first lens, the first lens comprising a first lens group and a second lens group, the first lens group being arranged toward the light-emitting surface of the first reflector, the optical axes of the first lens group and the second lens group being parallel, and the first lens group and the second lens group being arranged in a direction perpendicular to the optical axis, the first lens being movable in the direction of the optical axis, and the relative positional relationship between the first lens group and the second lens group remaining unchanged;
[0008] A second reflector, wherein the first lens is located between the first reflector and the second reflector, and the second reflector is used for reflecting light from the first lens group to the second lens group.
[0009] Optionally, the second reflector is movably arranged in the direction of the optical axis, and during the movement of the second reflector, the relative position relationship between the second reflector and the first lens is maintained.
[0010] Optional, including:
[0011] Pedestal;
[0012] A carrier, wherein the carrier is slidably connected to the base in the direction of the optical axis, the carrier is slidably connected to the first lens in the direction of the optical axis, and the second reflector is fixedly connected to the carrier.
[0013] Optionally, the carrier includes at least one first slide groove, the base includes at least one second slide groove, the first slide groove and the second slide groove cooperate with each other to form a first ball rolling space, and the camera module further includes a first ball rolling space; and / or,
[0014] The carrier includes at least one third slide groove, the first lens includes at least one fourth slide groove, the third slide groove and the fourth slide groove cooperate with each other to form a second ball rolling space, and the camera module also includes a second ball rolling space arranged in the second ball rolling space.
[0015] Optionally, a base is included, and the second reflector and the first lens are both slidably connected to the base along the optical axis direction;
[0016] A driving assembly drives the second reflector and the first lens to slide synchronously relative to the base.
[0017] Optionally, the second reflective member includes a first reflective surface and a second reflective surface, the first reflective surface reflects light from the first lens group to the second reflective surface, and the second reflective surface reflects light reflected from the first reflective surface to the second lens group;
[0018] The first reflecting surface and the second reflecting surface are arranged at a cone angle, a first optical path is arranged between the light emitting surface of the first lens group and the first reflecting surface, a second optical path is arranged between the second reflecting surface and the second lens group, and the first optical path and the second optical path are parallel or substantially parallel to each other.
[0019] Optionally, also include:
[0020] The second lens is arranged between the first lens group and the first reflector, or the second lens is arranged between the second lens group and the image sensor of the camera module.
[0021] Optionally, any two of the first lens, the second lens and the second reflector are movably arranged in the direction of the optical axis;
[0022] And during the focusing process, the relative position relationship between the first lens and the second reflective element remains unchanged.
[0023] Optionally, the first lens group and the second lens group are connected to the same lens barrel.
[0024] According to a second aspect of the embodiments of the present disclosure, there is provided an electronic device, comprising a camera module as described in any one of the above embodiments.
[0025] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:
[0026] It can be seen from the above embodiments that the present invention changes the optical path length of the first lens group-the second reflector-the second lens group by moving the first lens, which is equivalent to changing the focal length of the first lens, and can achieve optical zoom of the camera module. Compared with the solution in which the first lens group and the second lens group are arranged along the optical axis, it is beneficial to reduce the zoom stroke, and the relative position relationship between the first lens group and the second lens group remains unchanged, and no relative optical axis deviation will be generated due to zooming, which is beneficial to improving the imaging effect.
[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0029] Figure 1 The figure is a schematic structural diagram of a camera module according to an exemplary embodiment.
[0030] Figure 2 yes Figure 1 A partial schematic diagram of the camera module in FIG.
[0031] Figure 3 The figure is a schematic diagram of a camera module according to an exemplary embodiment.
[0032] Figure 4 is a schematic diagram of another camera module according to an exemplary embodiment.
[0033] Figure 5 is a schematic diagram of yet another camera module according to an exemplary embodiment. DETAILED DESCRIPTION
[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0035] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0036] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".
[0037] For ease of understanding, the technical terms involved in the embodiments of the present disclosure are first explained and described below.
[0038] The optical axis is the direction in which the optical system transmits light, referring to the principal ray of the central field of view. For symmetrical transmission systems, it generally coincides with the centerline of rotation of the optical system.
[0039] Focus is the point where light rays parallel to the optical axis converge after being refracted by the lens.
[0040] Focal length, also known as focal length, is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the optical center of the lens to the focus when an infinitely distant scene forms a clear image on the focal plane through the lens. For a fixed-focus lens, the position of its optical center is fixed, so the focal length is fixed; for a zoom lens, the change of the optical center of the lens brings about the change of the lens focal length, so the focal length can be adjusted.
[0041] Focusing, also known as light alignment or focusing. The process of changing the image distance through the focusing component in the camera module to make the image of the subject clear. Specifically, such as adjusting the distance between the image sensor and the lens assembly to make the image acquired by the image sensor clear, thereby completing the focusing. In addition, focusing includes automatic focus and manual focus, among which automatic focus (autofocus) is a method of using the principle of light reflection from an object, in which the reflected light is received by the photosensitive element on the camera module, and is processed by a computer to drive the driving device to focus. For example, the camera module emits an infrared ray (or other ray), determines the distance of the subject based on the reflection of the subject, and then adjusts the image distance based on the measured result to achieve automatic focus.
[0042] Zooming is changing the focal length of the lens, that is, changing the viewing angle of the lens, to enlarge or reduce the subject so that the image forms a clear image on the imaging surface.
[0043] Figure 1 is a structural diagram of a camera module according to an exemplary embodiment. Figure 2 yes Figure 1 A partial schematic diagram of the camera module in FIG. Figure 1 and Figure 2 As shown, the camera module includes a first reflector 1, a first lens 2 and a second reflector 3, and the first lens 2 is located between the first reflector 1 and the second reflector 3. The first reflector 1 is provided with a light incident surface and a light emitting surface, and after the incident light enters the first reflector 1 through the light incident surface, it is turned 90° or other angles and then emitted from the light emitting surface, and the light enters the second reflector 3 after passing through the first lens 2. Among them, the first lens 2 includes a first lens group 21 and a second lens group 22, and the first lens group 21 is arranged toward the first reflector 1, and the light can be input into the second reflector 3 after passing through the first lens group 21, and the second reflector 3 can be used to reflect the light from the first lens group 21 to the second lens group 22.
[0044] The optical axis direction of the second lens group 22 is parallel to the optical axis direction of the first lens group 21, and the first lens group 21 and the second lens group 22 are arranged in a direction perpendicular to the optical axis direction, such as Figure 3 As shown, the optical axis direction of the first lens group 21 and the second lens group 22 is the left-right direction, and the arrangement direction of the first lens group 21 and the second lens group 22 is the up-down direction. Of course, in other embodiments, the arrangement direction of the first lens group 21 and the second lens group 22 can also be the left-right direction. The first lens 2 is movable in the optical axis direction, and during the movement of the first lens 2 in the optical axis direction, the relative position relationship between the first lens group 21 and the second lens group 22 remains unchanged. In other words, when the first lens 2 moves, the first lens group 21 and the second lens group 22 move synchronously in the optical axis direction.
[0045] Based on this, during the zooming process, the optical path length of the first lens group 21-the second reflector 3-the second lens group 22 can be changed by moving the first lens 2, which is equivalent to changing the lens focal length of the first lens 2, thereby achieving optical zooming. Compared with the solution in which the first lens group 21 and the second lens group 22 are arranged along the optical axis, the zooming stroke is reduced, and the relative position relationship between the first lens group 21 and the second lens group 22 remains unchanged, and no relative optical axis deviation will be generated due to zooming, which is beneficial to improving the imaging effect. In order to maintain the relative position relationship between the first lens group 21 and the second lens group 22 of the first lens 2, in some embodiments, such as Figure 3As shown, the first lens group 21 and the second lens group 22 can be connected to the same lens barrel to achieve the integration of the first lens group 21 and the second lens group 22; in other embodiments, the first lens group 21 and the second lens group 22 can be connected to different lens barrels, and the first lens group 21 and the second lens group 22 move synchronously in the optical axis direction.
[0046] The light can be turned to 90°, 180° or other angles by the second reflector 3, and can be adaptively designed according to actual needs. For example, the second reflector 3 includes a first reflective surface 31 and a second reflective surface 32, the first reflective surface 31 reflects the light from the first lens group 21 to the second reflective surface 32, and the second reflective surface 32 reflects the light reflected from the first reflective surface 31 to the second lens group 22, so that the light emitted from the second lens group 22 enters the image sensor for imaging.
[0047] The first reflection surface 31 and the second reflection surface 32 are arranged at a cone angle, and a first optical path is provided between the first lens group 21 and the first reflection surface 31, and a second optical path is provided between the second reflection surface 32 and the second lens group 22, and the first optical path and the second optical path are parallel to each other or substantially parallel to each other. In this way, the first reflection surface 31 and the second reflection surface 32 are arranged at a cone angle, so that the light reflected by the first reflection surface 31 can be directly reflected to the second reflection surface 32, which is conducive to reducing the cost of the second reflection member 3. At the same time, the first optical path and the second optical path are made parallel to each other, so that a regular optical path can be formed, and the actual optical distance between the first lens group 21 and the second lens group 22 can be obtained by adding the length of the first optical path to the length of the second optical path, which is convenient for control.
[0048] Furthermore, in some embodiments, the length of the first optical path is equal to or approximately equal to the length of the second optical path. In this way, when adjusting the second reflector 3 or the first lens 2, the second reflector 3 or the first lens 2 moves a distance of 1, which is equal to the optical distance between the first lens group 21 and the second lens group 22 being adjusted by two distances or approximately two distances. Compared with the solution in which the moving distance of the lens is equal to the change in the optical distance in the traditional method, in this solution, when the second reflector 3 or the first lens can move a distance x along the optical axis, a 2x or approximately 2x back focus distance change can be achieved. The shorter the moving distance, the faster the focusing speed, and the faster the autofocus speed can be.
[0049] In the above-mentioned embodiments, the second reflector 3 can also be movably arranged in the optical axis direction of the camera module, and during the movement of the second reflector 3, the relative position relationship between the second reflector 3 and the first lens 2 remains unchanged. That is, during the movement of the second reflector 3, the first lens 2 and the second reflector 3 keep moving synchronously, so that the optical path length from the first lens group 21 to the second lens group 22 remains unchanged. Based on this, the zoom of the camera module can be achieved by moving the first lens 2 in the optical axis direction, and the focusing can be achieved by moving the second reflector 3 and the first lens 2 in the optical axis direction, and the optical path length will not be changed during the focusing process, that is, the zoom length that has been adjusted in place before will not be affected.
[0050] For example, the camera module includes a base 4 and a carrier 5, the carrier 5 is slidably connected to the base 4 in the direction of the optical axis, the carrier 5 is slidably connected to the first lens 2 in the direction of the optical axis, and the second reflector 3 is fixedly connected to the carrier 5. Based on this, when the carrier 5 slides along the optical axis relative to the base 4, the second reflector 3 and the first lens 2 can both slide synchronously with the carrier 5 in the direction of the optical axis to achieve focusing, and zooming can be achieved by sliding the first lens 2 in the direction of the optical axis relative to the carrier 5. The synchronous movement between the second reflector 3 and the first lens 2 is achieved through a mechanical structure, which is conducive to reducing the control difficulty of the camera module.
[0051] like Figure 2 As shown, the carrier 5 includes at least one first slide groove 51, the base 4 includes at least one second slide groove 41, the first slide groove 51 and the second slide groove 41 can be matched one by one to form a first ball space, and the camera module also includes a first ball 6 arranged in the first ball space. Through the setting of the first ball 6, the base 4 and the carrier 5 can be converted into rolling friction, which is conducive to reducing friction, thereby reducing the requirements for the drive component. Similarly, in some embodiments, the carrier 5 also includes at least one third slide groove 52, the first lens 2 includes at least one fourth slide groove 23, the third slide groove 52 and the fourth slide groove 23 are matched one by one to form a second ball space, and the camera module also includes a second ball 7 arranged in the second ball space. Through the setting of the second ball 7, the carrier 5 and the first lens can be converted into rolling friction, which reduces friction, thereby reducing the requirements for the drive component.
[0052] Among them, the driving component between the driving carrier 5 and the base 4 may include a magnet and a coil, and the interaction between the magnet and the coil generates a force for driving the carrier 5 and the base 4 to move relative to each other. Similarly, the driving member between the carrier 5 and the first lens 2 may also adopt a method of generating a driving force by the interaction between the magnet and the coil. Of course, the magnet and the coil as the driving component are only used as an exemplary description. In other embodiments, it can also be realized by a motor or other driving member. Moreover, in order to maintain the relative position relationship between the carrier 5 and the base 4 after the driving member stops outputting the driving force, a mutually adsorbed magnet component may be set between the carrier 5 and the base 4, and the subsequent driving component can overcome the friction force and the adsorption force to drive the carrier 5 and the base 4 to move relative to each other; similarly, a mutually adsorbed magnet component may also be set between the carrier 5 and the first lens 2. The magnet component may be adsorption between magnets, or adsorption between magnets and metal parts.
[0053] In the above embodiments, the synchronous movement of the first lens 2 and the second reflector 3 in the direction of the optical axis is realized by a mechanical structure as an example. In some embodiments, the second reflector 3 and the first lens are both connected to the base 4 in a sliding manner along the optical axis, and the driving assembly can drive the second reflector 3 and the first lens 2 to slide synchronously in the direction of the optical axis, so that during the focusing process, the relative position relationship between the second reflector 3 and the first lens 2 can be maintained, and the optical path length between the first lens group 21 and the second lens group 22 can be maintained.
[0054] In the above embodiments, Figure 4 As shown, the camera module further includes a second lens 8, which is disposed between the first lens group 21 and the second lens group 8; or Figure 5 As shown, the second lens 8 is disposed between the second lens group 22 and the image sensor. Based on this, the second lens 8 is disposed to enrich the shooting modes of the camera module. Figure 3-Figure 5 In the illustrated embodiment, the direction indicated by arrow A represents the reciprocating translation of the first lens 2 in the direction of the optical axis, the direction indicated by arrow B represents the reciprocating translation of the first lens 2 and the second reflector 3 in the direction of the optical axis, and the direction indicated by arrow C represents the reciprocating translation of the second lens 8 in the direction of the optical axis.
[0055] Any two of the first lens 2, the second lens 8 and the second reflector 3 can be movably arranged in the direction of the optical axis, and during the focusing process, the relative position relationship between the first lens 2 and the second reflector 3 remains unchanged. Figure 4 As shown, the second lens 8 is fixedly arranged, the first lens 2 is slidable in the direction of the optical axis to achieve zooming, and the first lens 2 and the second reflector 3 are slidable in the direction of the optical axis to achieve focusing; for another example, Figure 5As shown, the second reflector 3 is fixedly arranged, zooming is achieved by sliding the first lens 2 in the direction of the optical axis, and focusing is achieved by sliding the second lens 8 in the direction of the optical axis.
[0056] Of course, it should be noted that Figure 4 In the embodiment shown, the second reflector 3 may be fixedly arranged, and zooming is achieved by sliding the first lens 2 in the direction of the optical axis, and focusing is achieved by sliding the second lens 8 in the direction of the optical axis. Figure 5 In the embodiment shown, the second lens 8 may be fixed, the first lens 2 may slide in the direction of the optical axis to achieve zooming, and the first lens 2 and the second reflector 3 may slide synchronously in the direction of the optical axis to achieve focusing. Figure 4 and Figure 5 In the illustrated embodiment, when the second lens 8 is fixedly arranged, the synchronous sliding between the second reflector 3 and the first lens 2 can be achieved by relative sliding between the base 4 and the carrier 5, or the second reflector 3 and the first lens 2 can be synchronously driven to slide in the direction of the optical axis by a driving assembly.
[0057] Based on the technical solution of the present disclosure, an electronic device is also provided, which may include the camera module described in any of the above embodiments. The light incident surface of the first reflector 1 of the camera module may be arranged toward the light incident hole of the electronic device, and the optical axis direction of the first lens 2 may be arranged along the length direction or width direction of the electronic device. Among them, the electronic device may include a handheld device, a vehicle-mounted device, a wearable device, a monitoring device, a cellular phone, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a camcorder, a video recorder, a camera, a smart watch, a smart wristband, a vehicle-mounted computer, and other electronic devices 10 with imaging functions.
[0058] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.
[0059] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A camera module, characterized in that: include: a first reflective member; a first lens, the first lens comprising a first lens group and a second lens group, the first lens group being arranged toward the light-emitting surface of the first reflector, the optical axes of the first lens group and the second lens group being parallel, and the first lens group and the second lens group being arranged in a direction perpendicular to the optical axis, the first lens being movable in the direction of the optical axis, and the relative positional relationship between the first lens group and the second lens group remaining unchanged; A second reflector, wherein the first lens is located between the first reflector and the second reflector, and the second reflector is used for reflecting light from the first lens group to the second lens group.
2. The camera module according to claim 1, characterized in that: The second reflector is movably arranged in the direction of the optical axis, and during the movement of the second reflector, the relative position relationship between the second reflector and the first lens is maintained.
3. The camera module according to claim 2, characterized in that: include: Pedestal; A carrier, wherein the carrier is slidably connected to the base in the direction of the optical axis, the carrier is slidably connected to the first lens in the direction of the optical axis, and the second reflector is fixedly connected to the carrier.
4. The camera module according to claim 3, characterized in that: The carrier includes at least one first slide groove, the base includes at least one second slide groove, the first slide groove and the second slide groove cooperate with each other to form a first ball rolling space, and the camera module also includes a first ball rolling space; and / or, The carrier includes at least one third slide groove, the first lens includes at least one fourth slide groove, the third slide groove and the fourth slide groove cooperate with each other to form a second ball rolling space, and the camera module also includes a second ball rolling space arranged in the second ball rolling space.
5. The camera module according to claim 2, characterized in that: It comprises a base, and the second reflector and the first lens are both slidably connected to the base along the optical axis direction; A driving assembly drives the second reflector and the first lens to slide synchronously relative to the base.
6. The camera module according to claim 1, characterized in that: The second reflective element includes a first reflective surface and a second reflective surface, the first reflective surface reflects the light from the first lens group to the second reflective surface, and the second reflective surface reflects the light reflected from the first reflective surface to the second lens group; The first reflecting surface and the second reflecting surface are arranged at a cone angle, a first optical path is arranged between the light emitting surface of the first lens group and the first reflecting surface, a second optical path is arranged between the second reflecting surface and the second lens group, and the first optical path and the second optical path are parallel or substantially parallel to each other.
7. The camera module according to claim 1, characterized in that: Also includes: The second lens is arranged between the first lens group and the first reflector, or the second lens is arranged between the second lens group and the image sensor of the camera module.
8. The camera module according to claim 7, characterized in that: Any two of the first lens, the second lens and the second reflector are movably arranged in the direction of the optical axis; And during the focusing process, the relative position relationship between the first lens and the second reflective element remains unchanged.
9. The camera module according to claim 1, characterized in that: The first lens group and the second lens group are connected to the same lens barrel.
10. An electronic device, characterized in that: Comprising a camera module as described in any one of claims 1-9.