Camera module and electronic device

Abstract

The application provides a camera module and an electronic device. The camera module comprises: a lens; a motor comprising a fixed part and a movable part, the movable part being connected to the lens, and the movable part and the fixed part having a gap for movement of the movable part relative to the fixed part; a prism arranged on the light exit side of the lens, the lens and the gap being located on the same side of the prism, the prism being configured to receive light from the lens and reflect the light at least once; and a dust catching structure arranged on the side of the prism facing the lens, the dust catching structure being arranged opposite the exit of the gap extending to the side of the prism. The above technical solution can improve the black shadow problem of the folding module and improve the imaging quality of the image.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more specifically, to a camera module and an electronic device. Background Technology

[0002] With the continuous development of electronic device technology, the shooting function has become an important feature of electronic devices (such as mobile phones, tablets, etc.) and a major indicator for evaluating the performance of electronic devices. In order to meet the diverse needs of users, such as to achieve a camera-like shooting experience, electronic devices have gradually begun to be equipped with periscope camera modules.

[0003] Periscope camera modules incorporate optical folding elements, such as prisms and mirrors, to fold the light path, thus providing more powerful camera functions, such as high-magnification optical zoom, while maintaining a smaller size.

[0004] However, existing periscope camera modules have poor dust resistance, and dust can easily enter the module, causing shadow problems and affecting image quality. Summary of the Invention

[0005] This application provides a camera module and electronic device that can improve the shadow problem of the camera module and enhance the image quality.

[0006] In a first aspect, a camera module is provided, comprising: a lens; a motor including a fixed member and a movable member, the movable member being connected to the lens, and a gap between the movable member and the fixed member for the movable member to move relative to the fixed member; a prism disposed on the light-emitting side of the lens, the lens and the gap being located on the same side of the prism, the prism being used to receive light from the lens and reflect the light at least once; and a dust-collecting structure disposed on the side of the prism facing the lens, the dust-collecting structure being disposed opposite to an outlet of the gap extending to one side of the prism.

[0007] During the assembly or use of the camera module, if dust enters the gap between the moving and stationary parts, or if the moving part collides with the stationary part under the impact of external force and produces particulate dust, the dust-catching structure can capture the dust falling from the gap toward the exit at the prism end, preventing dust from entering the optical path and causing shadow problems, thereby improving image quality.

[0008] In conjunction with the first aspect, in one possible implementation, the dust-collecting structure includes a first adhesive layer disposed toward the outlet.

[0009] The dust collection method uses adhesive bonding, which makes the dust collection structure simple to assemble and provides good dust collection effect.

[0010] In conjunction with the first aspect, in one possible implementation, the dust-collecting structure further includes a support layer stacked with the first adhesive layer, the support layer being connected to the prism, and the first adhesive layer being disposed on the side of the support layer facing the outlet.

[0011] By setting a first adhesive layer for adhering dust in the support layer, the dust-collecting area of ​​the first adhesive layer can be better controlled, and the stress-stretching problem caused by the first adhesive layer being directly coated on the prism can be reduced or avoided, thereby ensuring the surface accuracy of the prism.

[0012] In conjunction with the first aspect, in one possible implementation, the support layer is a thin film deposited on the surface of the prism facing the lens.

[0013] The support layer formed by the coating method has strong adhesion, high stability, and low stress, which can minimize the impact of the dust collection structure on the prism performance (such as surface accuracy and reflection efficiency).

[0014] In conjunction with the first aspect, in one possible implementation, at least a portion of the support layer is bonded to the prism.

[0015] The support layer is fixed to the prism by adhesive bonding, which is a simple, flexible and low-cost process.

[0016] In conjunction with the first aspect, in one possible implementation, the location on the prism used for bonding with the support layer belongs to the optically ineffective region of the prism.

[0017] Since the optically ineffective region does not directly participate in light propagation, the optically ineffective region of the prism is bonded to the support layer, thus avoiding the influence of the adhesive material on the performance of the optically effective region of the prism, such as its reflection efficiency.

[0018] In conjunction with the first aspect, in one possible implementation, the support layer includes a first portion and a second portion, the first portion being bonded to the edge of a first facet of the prism, the second portion having a gap between it and the first facet, the first facet being the facet of the prism facing the lens.

[0019] The partial bonding of the support layer to the prism reduces the contact area between the adhesive material and the prism, thereby reducing the stress exerted by the adhesive material on the prism and thus minimizing its impact on the prism's surface accuracy. Furthermore, the edge of the first surface is typically an optically ineffective region; connecting the support layer to this region prevents the adhesive material from contacting the optically effective region and thus avoiding any adverse effects on its optical performance.

[0020] In conjunction with the first aspect, in one possible implementation, the first face of the prism includes an incident area for receiving light from the lens, the incident area being aligned with the dust-collecting structure along a first direction, and the first face being the face of the prism facing the lens; the prism also includes a second face and a third face, wherein the second face and the third face are located on opposite sides of the first face in a circumferential direction of rotation about the first direction; the opposite ends of the support layer are bent and bonded to the second face and the third face respectively, and the distance between the portion of the support layer disposed opposite to the first face and the first face is greater than or equal to zero.

[0021] By fixing the end of the support layer to the other surfaces of the prism besides the first surface, the adhesive material can be prevented from contacting the first surface, thereby avoiding the influence of the adhesive material on the optical performance of the first surface.

[0022] In conjunction with the first aspect, in one possible implementation, the second surface is an adjacent surface of the first surface, and / or the third surface is an adjacent surface of the first surface.

[0023] By connecting the support layer to the adjacent surface of the first surface, the size of the support layer can be reduced, thus saving costs.

[0024] In conjunction with the first aspect, in one possible implementation, the support layer is U-shaped.

[0025] In conjunction with the first aspect, in one possible implementation, the dust-collecting structure further includes a second adhesive layer disposed on the side of the support layer facing the prism, the second adhesive layer being used to bond with the prism.

[0026] The dust collection structure has a second adhesive layer for fixing, which facilitates installation.

[0027] In conjunction with the first aspect, in one possible implementation, the area of ​​the first adhesive layer is less than or equal to the area of ​​the support layer.

[0028] In conjunction with the first aspect, in one possible implementation, the projection of the outlet onto the prism's face facing the lens lies within the coverage area of ​​the first adhesive layer.

[0029] This allows dust falling through the gaps to be captured by the dust-catching structure, which helps improve the shadow problem.

[0030] In conjunction with the first aspect, in one possible implementation, the support layer is made of plastic and / or metal.

[0031] Using plastic materials reduces the weight of the support layer, resulting in lower costs. Using metal materials allows for a reduction in the thickness of the support layer due to the excellent ductility of metal, and also helps maintain the optical performance of the prism.

[0032] In conjunction with the first aspect, in one possible implementation, the support layer is a membrane or sheet.

[0033] When the support layer uses a film material, its thickness is smaller, which reduces the space occupied by the dust-catching structure in the lens autofocus direction, thereby reducing or avoiding adverse effects of the dust-catching structure on other components. Furthermore, the smaller thickness of the dust-catching structure allows for a larger dust-catching area without affecting motor movement, thus improving dust resistance.

[0034] When the support layer is made of sheet material, the support strength is high, which is beneficial for the installation and fixation of the dust collection structure.

[0035] In conjunction with the first aspect, in one possible implementation, the thickness of the first adhesive layer is greater than or equal to 5 micrometers and less than or equal to 200 micrometers.

[0036] The first adhesive layer should be of a suitable thickness to ensure strong dust collection capabilities without interfering with the layout of other components.

[0037] In conjunction with the first aspect, in one possible implementation, the area of ​​the dust-collecting structure covering the prism is located outside the optically effective area of ​​the prism.

[0038] The dust-collecting structure is located outside the optically effective area, which avoids the dust-collecting structure affecting the light propagation path, ensuring the intensity of light reaching the image sensor, and thus ensuring image quality.

[0039] In conjunction with the first aspect, in one possible implementation, the face of the prism facing the lens includes an incident area for receiving light from the lens, the incident area being aligned with the dust-collecting structure along a first direction, the actuator for moving the lens along the first direction, and the area of ​​the dust-collecting structure covering the prism and the range of movement of the actuator along the first direction not overlapping in the projection of the prism onto the face of the prism facing the lens.

[0040] The coverage area of ​​the dust collection structure does not overlap with the range of motion of the moving part of the motor when it moves along the first direction, thus avoiding any adverse effects of the dust collection structure on the movement of the moving part.

[0041] In conjunction with the first aspect, in one possible implementation, the camera module further includes: an image sensor for receiving light from the prism and forming an image, the image sensor being located on the same side of the prism as the lens; the surface of the prism facing the lens includes an incident area and an exit area, the incident area for receiving light from the lens, the exit area for emitting light toward the image sensor, and the dust-collecting structure being disposed between the incident area and the exit area.

[0042] The dust-collecting structure can block dust from entering and exiting the injection area, thus improving the shadow problem.

[0043] In conjunction with the first aspect, in one possible implementation, the face of the prism facing the lens also includes a reflective region for reversing the direction of light propagating inside the prism, and the area of ​​the dust-collecting structure covering the prism at least partially overlaps with the reflective region.

[0044] The facet of the prism facing the lens is also used to reflect light, which further enables the miniaturization of the module.

[0045] In conjunction with the first aspect, in one possible implementation, the motor further includes a housing and a base, the housing and the base being fastened together to form a receiving space in which the lens, the moving part and the fixed part are housed; a through hole is provided on the side of the housing opposite to the base, the through hole being used for light from the subject to enter the lens, the through hole being connected to the gap.

[0046] In conjunction with the first aspect, in one possible implementation, the base includes a receiving groove having an opening in the radial direction of the lens toward the gap, and the dust-catching structure extends into the receiving groove near the edge of the lens.

[0047] The inclusion of a receiving trough helps to increase the dust collection area of ​​the dust collection structure and improve the dust collection effect. In addition, since part of the dust collection structure is located inside the receiving trough, the receiving trough can also play a certain role in limiting its movement.

[0048] In conjunction with the first aspect, in one possible implementation, the dust inlet path formed by the through hole and the gap extends in a direction parallel to the center line of the lens.

[0049] In a second aspect, an electronic device is provided, including an image processor and a camera module as described in the first aspect and any implementation thereof, wherein the image processor is communicatively connected to the camera module and is used to receive and process images acquired by the camera module.

[0050] The beneficial effects of the device in the second aspect mentioned above are similar to those described in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0051] Figure 1 This is a schematic structural diagram of an electronic device to which this application embodiment applies.

[0052] Figure 2 This is a schematic assembly diagram of a camera module provided in an embodiment of this application.

[0053] Figure 3 This is a schematic exploded view of a camera module provided in an embodiment of this application.

[0054] Figure 4This is a schematic cross-sectional view of a camera module provided in an embodiment of this application.

[0055] Figure 5 This is a partial top view of a camera module provided in an embodiment of this application.

[0056] Figure 6 This is a schematic diagram of a dust collection structure provided in an embodiment of this application.

[0057] Figure 7 This is a schematic diagram of another dust collection structure provided in an embodiment of this application.

[0058] Figure 8 This is a schematic diagram of another dust collection structure provided in an embodiment of this application.

[0059] Figure 9 This is a schematic diagram of another dust collection structure provided in the embodiments of this application.

[0060] Figure 10 This is a schematic diagram of another dust collection structure provided in the embodiments of this application.

[0061] Figure 11 This is a schematic diagram of another dust collection structure provided in the embodiments of this application.

[0062] Figure 12 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application.

[0063] Figure 13 This is a schematic diagram of another camera module provided in an embodiment of this application.

[0064] Figure 14 This is a schematic diagram of another camera module provided in an embodiment of this application.

[0065] Figure 15 This is a schematic diagram of the structure of another camera module provided in the embodiments of this application.

[0066] Figure 16 This is a schematic diagram of the structure of another camera module provided in the embodiments of this application. Detailed Implementation

[0067] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0068] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0069] In the embodiments of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more, and "at least one" and "one or more" refer to one, two, or more than two. The singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context explicitly indicates otherwise.

[0070] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0071] In the description of the embodiments of this application, the terms "upper," "lower," "inner," "outer," "vertical," and "horizontal," etc., indicate orientations or positional relationships relative to the orientations or positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and not to indicate or imply a specific orientation that the device or component must have, or that it must be constructed and operated in a specific orientation. They can change accordingly depending on the orientation of the components in the accompanying drawings, and therefore should not be construed as limiting this application. Furthermore, "vertical" in this application is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Additionally, in the embodiments of this application, descriptions such as "when," "in the case of," "if," and "if" all refer to the device taking corresponding actions under certain objective circumstances, not to limiting the time, nor to requiring the device to perform a judgment action during implementation, nor implying any other limitations.

[0072] In the embodiments of this application, the same reference numerals are used to denote the same component or part. Furthermore, the parts in the drawings are not drawn to scale, and the dimensions and sizes of the parts shown are merely exemplary and should not be construed as limiting the scope of this application.

[0073] To facilitate understanding, the technical terms used in this application will be explained and described below.

[0074] The optical axis is an imaginary line in an optical system, which can be understood as the direction in which light rays are transmitted through the optical system. Specifically, the optical axis can be considered as an axis perpendicular to the center of each lens in a lens. For a symmetrical transmission system, its optical axis generally coincides with the rotation center line of the optical system.

[0075] The principal ray is the ray that passes through the center of the entrance pupil and exit pupil of the system.

[0076] Auto focus (AF) is a technique that uses the principle of light reflection from the subject. The light reflected from the subject passes through the lens and is imaged and received on the image sensor. After being processed by a computer, the image sensor drives the focusing device to focus.

[0077] Optical image stabilization (OIS) refers to the use of optical components in imaging instruments such as mobile phones or cameras to avoid or reduce camera shake during the capture of optical signals, thereby improving image quality. A common approach is to use a gyroscope for shake detection, and then use an OIS motor to translate or rotate the entire lens in the opposite direction to compensate for image blur caused by camera shake during exposure.

[0078] It should be noted that the above-described terms and concepts are for illustrative purposes only and should not be construed as limiting the embodiments of this application.

[0079] Figure 1 A schematic structural diagram of an electronic device to which embodiments of this application are applicable is shown.

[0080] In this application, the electronic devices involved are those with imaging capabilities, such as mobile phones, personal digital assistants (PDAs), tablet computers, laptop computers, cameras, video recorders, smartwatches, smart bracelets, point-of-sale (POS) terminals, in-vehicle infotainment systems, televisions (e.g., smart screens), wearable devices, virtual reality (VR) devices, and augmented reality (AR) devices. This application does not impose any special limitations on the specific form of the electronic device. For ease of explanation and understanding, the following description uses a mobile phone as an example.

[0081] For example, Figure 1 Images (a) and (b) schematically show the front and back of the electronic device 100, respectively. Figure 1 As shown, the electronic device 100 may include a housing 101, a display panel (DP) 102, and a camera compact module (CCM) 103.

[0082] The housing 101 has a receiving space for accommodating the components of the electronic device 100. The housing 101 also serves to protect the electronic device 100 and support the entire device. The display screen 102 and the camera module 103 are disposed within the receiving space of the housing 101 and connected to the housing 101. In some embodiments, the housing 101 may include a back cover opposite to the display screen 102 and a mid-frame disposed between the back cover and the display screen 102; the display screen 102 and the camera module 103 may be fixed to the mid-frame. The housing 101 may be made of metal, plastic, ceramic, or glass, etc.

[0083] The display screen 102 is used to display images, such as images captured by the camera module 103. The display screen 102 can be a liquid crystal display (LCD) screen, an organic light-emitting diode (OLED) screen, etc. The display screen 102 can be a regular screen, or an irregularly shaped screen, a foldable screen, etc. The display screen 102 can be located on the front and / or back of the electronic device 100. Here, the front of the electronic device 100 can be understood as the side facing the user when using the electronic device 100, and the back of the electronic device 100 can be understood as the side facing away from the user when using the electronic device 100.

[0084] The camera module 103 is used to capture still images or videos. The camera module 103 can be located on the front or back of the electronic device 100. A front-mounted camera module 103 can also be called a front-facing camera, and a rear-mounted camera module 103 can also be called a rear-facing camera. During shooting, the user can select the appropriate camera module according to their shooting needs. In some embodiments, when the display screen 102 can be folded, the camera module 103 can function as either a front-facing or rear-facing camera as the display screen 102 folds.

[0085] It is understandable that the placement of the camera module 103 can be determined based on actual needs. Figure 1 The installation locations shown are merely illustrative. For example, when the camera module 103 is used as a front-facing camera, it can be positioned at the top of the display screen 102 (e.g., near the earpiece). Similarly, when the camera module 103 is used as a rear-facing camera, it can be positioned at the upper left corner, upper right corner, or the center of the upper half of the back of the electronic device 100. Furthermore, the camera module 103 can be mounted on a component that is movable or rotatable relative to the display screen 102, allowing the camera module 103 to retract or rotate relative to the main body of the electronic device 100.

[0086] In some embodiments, the camera module 103 may be a telephoto module, a wide-angle module, an ultra-wide-angle module, or a depth-of-field module.

[0087] This application embodiment does not limit the number of camera modules 103; it can be one, two, four, or even more. When multiple camera modules 103 are set, these multiple camera modules 103 can be different, for example, they may have different lens optical parameters, different lens placement positions, different lens shapes, etc. This application embodiment does not limit the relative positions of the multiple camera modules; for example, the multiple camera modules can be arranged in a straight line or in a ring. In some embodiments, one or more of the multiple camera modules 103 can serve as the main camera module. Typically, the main camera module is responsible for the main shooting task, usually has the highest pixel count, and can provide higher resolution and a more powerful sensor, thereby meeting the user's photography needs in different scenarios.

[0088] In some embodiments, the electronic device 100 may further include a protective lens 104 for protecting the camera module 103. The protective lens 104 is disposed on the housing 101 and covers the camera module 103. In some embodiments, the protective lens 104 may also cover the display screen 102 of the electronic device 100 or the back of the electronic device 100.

[0089] The protective lens 104 can be made of glass, sapphire, ceramic, etc., and this application does not impose any special limitations on it. For example, the protective lens 104 is transparent or partially transparent, and light from outside the electronic device 100 can enter the camera module 103 through the protective lens 104.

[0090] In some embodiments, the electronic device 100 may further include an image processor 105, which is located within the receiving space formed by the housing 101 and is communicatively connected to the camera module 103. The image processor 105 is used to acquire image data from the camera module 103 and process the image data. The communication connection between the image processor 105 and the camera module 103 may include data transmission via electrical connections such as wiring, or data transmission via coupling or other methods. It is understood that the image processor 105 and the camera module 103 may also be connected via other methods capable of data transmission.

[0091] The image processor 105 optimizes the digital image signal and transmits the processed signal to the display screen 102. The image processor 105 can be an image processing chip or a digital signal processing chip. Its function is to transmit the data obtained by the photosensitive chip to the central processing unit in a timely and fast manner and refresh the photosensitive chip. Therefore, the quality of the image processor 105 directly affects the image quality (such as color saturation, sharpness, etc.).

[0092] In some embodiments, the electronic device 100 may further include a circuit board located within a receiving space formed by the housing 101, and an image processor 105 fixed to and electrically connected to the circuit board. The circuit board may be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. For example, the circuit board may be an FR-4 dielectric substrate, a Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc.

[0093] In some embodiments, the electronic device 100 may further include an analog-to-digital converter (also called an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 103 and the image processor 105. The analog-to-digital converter is used to convert the signal generated by the camera module 103 into a digital signal and transmit it to the image processor 105. After being processed by the image processor 105, the digital image signal can be transmitted to the display module, and finally displayed as an image or video on the display screen 102.

[0094] In some embodiments, the electronic device 100 may further include a memory (not shown) that is communicatively connected to the image processor 105. The image processor 105 processes the digital image signal before transmitting the image to the memory, so that the image can be retrieved from the memory and displayed on the display screen 102 at any time when it is needed to view the image later. In some embodiments, the image processor 105 may also compress the processed digital image signal before storing it in the memory to save storage space.

[0095] It should be understood that Figure 1 The structure shown in the diagram does not constitute a specific limitation on the electronic device 100. The electronic device 100 may include more or fewer components than shown in the diagram. For example, the electronic device 100 may also include one or more of the following components: battery, flash, earpiece, buttons, sensors, etc. Or the electronic device 100 may not include the display screen 102, or the electronic device 100 may have a different component arrangement than shown in the diagram.

[0096] With the continuous development of electronic device technology, the shooting function has become an important feature of electronic devices (such as mobile phones, tablets, etc.) and a major indicator for evaluating the performance of electronic devices. In order to meet the diverse needs of users, such as achieving a camera-like shooting experience or meeting shooting needs in different scenarios, electronic devices have gradually begun to be equipped with periscope camera modules.

[0097] Periscope camera modules incorporate optical folding elements, such as prisms and mirrors, to fold the light path, thus providing more powerful imaging capabilities, such as high-magnification optical zoom, while maintaining a smaller size. However, existing periscope camera modules have poor dust resistance, allowing dust to easily enter the module and cause shadows, thereby affecting image quality.

[0098] In view of this, this application provides a periscope camera module that can be applied to electronic devices to improve dust resistance, reduce shadow problems, and thus improve image quality.

[0099] Figures 2 to 4 A schematic structural diagram of a camera module provided in an embodiment of this application is shown. Figure 2 This is a schematic assembly diagram of camera module 200. Figure 3 This is a schematic exploded view of camera module 200. Figure 4 This is a schematic cross-sectional view of the camera module 200. Figures 2 to 4 The camera module 200 in the middle can be applied to Figure 1 The electronic device 100 shown can be, for example, a Figure 1 An exemplary structure of the camera module 103 is shown below. (The following is in conjunction with...) Figures 2 to 4 The structure of camera module 200 is described below.

[0100] In this embodiment, the camera module 200 is a foldable module, or a periscope module. A foldable module utilizes a special optical design (such as a mirror, lens, or prism) to fold the light path. The folded light is then focused onto the image sensor for imaging, which can reduce the module's size and / or achieve a greater optical zoom. Here, the light path refers to the path of light rays, i.e., the path of light propagation. Light path folding, also known as light path reversal, refers to changing the transmission path of light. In this embodiment, the light beam formed by the light incident on the camera module 200 is also called the imaging beam, and the transmission direction of the imaging beam is represented by the transmission direction of the principal ray.

[0101] like Figure 2 As shown, the camera module 200 may include a lens 210, a motor 220, an optical path folding assembly 230, and a photosensitive assembly 240. The lens 210 receives light from the subject and transmits it to the optical path folding assembly 230. The motor 220 is connected to the lens 210 and drives the lens 210 for autofocus and / or optical image stabilization. The optical path folding assembly 230 is connected to the motor 220, with the motor 220 and lens 210 located on the same side of the assembly. The optical path folding assembly 230 receives light from the lens 210 and folds the light path before transmitting it to the photosensitive assembly 240. The photosensitive assembly 240 receives the light from the optical path folding assembly 230 and forms an image.

[0102] Since the camera module 200 is a periscope module, it has a folded optical axis. For ease of description, the side closer to the subject along the optical axis is defined as the front side, and the side opposite to the subject is defined as the rear side. Additionally, for ease of description, the axis containing the optical axis portion of the lens 210 (or the center line of the lens 210, or the direction of light emitted from the lens 210) is defined as the Z-axis; the transmission direction of light after it enters the optical path folding assembly 230 and is first folded by the optical path folding assembly 230 is in the same plane as the X-axis, and the X-axis is perpendicular to the Z-axis; the axis perpendicular to both the Z-axis and the X-axis is defined as the Y-axis.

[0103] Similarly, the definitions of the X, Y, and Z axes also apply to the accompanying drawings described below. It should be noted that the above definitions of the X, Y, and Z axes are merely for the convenience of describing the positional and connection relationships between the components in the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0104] refer to Figure 3 and Figure 4 The lens 210 mainly includes a lens group 211 and a lens barrel 212, with the lens group 211 housed within the receiving space formed by the lens barrel 212. The lens 210 is used to image an object-side scene onto an image-side imaging plane. In some embodiments, the lens 210 can also perform certain processing on the received imaging beam, such as aberration correction and chromatic aberration elimination. In this application, the optical axis portion corresponding to the lens 210 is a straight line.

[0105] Lens group 211 may include at least one lens. The at least one lens may be different or at least partially the same. This application embodiment does not specifically limit the number of lenses and lens materials included in lens group 211. Those skilled in the art can determine the number of lenses and lens materials according to actual needs, or set a combination of solid lenses (lenses with fixed optical parameters) and / or liquid lenses (lenses with dynamically adjustable optical parameters), etc., which will not be described further here.

[0106] The focal length of lens group 211 can be fixed, and correspondingly, lens 210 is a prime lens. Alternatively, the focal length of lens group 211 can be adjusted, and correspondingly, lens 210 is a zoom lens. For example, the focal length of lens 210 can be adjusted by changing the relative positions of the lenses in lens group 211.

[0107] The lens barrel 212 has a receiving space, primarily for accommodating the lens assembly 211. In some embodiments, the lens barrel 212 can be a single unit, with the lens assembly 211 housed within this single unit. In other embodiments, the lens barrel 212 may also comprise multiple lens barrel sections, with the lens groups included in the lens assembly 211 disposed within these multiple lens barrel sections. Exemplarily, the relative positions between these multiple lens barrel sections can be adjusted, thereby enabling adjustment of the relative positions between the lenses to achieve optical zoom.

[0108] Understandable. Figure 3 and Figure 4 The structure of the lens assembly 211, the structure of the lens barrel 212, and the connection method between the lens assembly 211 and the lens barrel 212 shown are merely exemplary and do not limit the embodiments of this application.

[0109] In some embodiments, light from the object being photographed can be incident on the lens 210 along the Z-axis. For example, when the camera module 200 is applied in an electronic device, the thickness direction of the electronic device can be parallel to the Z-axis.

[0110] In other embodiments, the front end of the lens 210 may also be provided with other optical elements, such as a reflector or a prism, which can receive light from the object being photographed and fold the light path before incident on the lens 210 along the Z-axis.

[0111] The motor 220 may include a housing 221, a base 222, and a drive assembly. The housing 221 and the base 222 are fastened together to form a receiving space, and the drive assembly is housed in this receiving space and arranged around the lens 210. That is, the lens 210 is also housed in the receiving space formed by the fastening of the housing 221 and the base 222.

[0112] The housing 221 is generally a semi-enclosed hollow cover, with a through hole 2211 at the end away from the base 222. This through hole 2211 is used to avoid the lens 210 and allow light from the subject to enter the lens 210. The housing 221 can serve as a protective and dustproof cover.

[0113] The base 222 is the foundation for mounting and securing the motor 220. It is generally square or other shapes and is mainly used to support components located in the receiving space formed by the housing 221 and the base 222. In some embodiments, the housing 221 and the base 222 may also be collectively referred to as the motor housing.

[0114] Understandable. Figure 3 and Figure 4 The structures of the outer shell 221 and the base 222 shown are merely exemplary and do not constitute any limitation on this application. Those skilled in the art can design the structure and shape of the outer shell 221 and the base 222 according to actual needs.

[0115] The drive assembly may include a fixed member 223 and a movable member 224, the movable member 224 (and the lens 210) being disposed in the space enclosed by the fixed member 223. The fixed member 223 is connected to and fixed relative to the motor housing (e.g., housing 221 or base 222), and the movable member 224 is connected to the lens 210 and movable relative to the fixed member 223.

[0116] The driving assembly is used to move the lens 210 along the Z-axis for autofocus and / or to move the lens 210 in a direction perpendicular to the Z-axis for optical image stabilization. In some embodiments, the driving assembly may include an AF assembly and an OIS assembly, wherein the AF assembly drives the lens 210 for autofocus and the OIS assembly drives the lens 210 for optical image stabilization, that is, the motor 220 achieves autofocus and optical image stabilization of the lens 210 through different components. In other embodiments, the AF assembly and the OIS assembly may be integrated into one unit, that is, the motor 220 can achieve both autofocus and optical image stabilization through the same component.

[0117] In some embodiments, the drive component can be used to move the entire lens 210, or to move a portion of the lens 210. For example, if one part of the lens 210 is relatively fixed and another part is movable, the drive component can drive the movable part to move in order to change the optical path and thus achieve the desired function.

[0118] In some embodiments, the motor 220 may be a voice coil motor (VCM), a shape memory alloy (SMA) motor, a stepping motor, a piezoelectric motor, etc. It should be understood that the specific structure of the motor 220 can be designed and selected according to the chosen driving method, and the embodiments of this application do not limit this.

[0119] For example, taking a voice coil motor as an example, the fixed component 223 may include a coil, and the moving component 224 may include a magnet, or the fixed component 223 may include a magnet, and the moving component 224 may include a coil.

[0120] In some embodiments, if the driving assembly is used to drive the autofocus and optical image stabilization of the lens 210, the actuator 224 may include an AF actuator and an OIS actuator. The AF actuator is used to drive the lens 210 to move relative to the fixed member 223 along the Z-axis, and the OIS actuator is used to drive the lens 210 to move relative to the fixed member 223 in a direction perpendicular to the Z-axis. For example, the AF actuator may be disposed between the lens 210 and the OIS actuator, that is, the AF actuator is connected to the lens 210, and the OIS actuator is connected to the AF actuator.

[0121] Understandable. Figure 3 and Figure 4 The structure and arrangement of the fixed component 223 and the movable component 224 shown are merely exemplary and do not constitute any limitation on this application. Those skilled in the art can design the structure and connection method of the fixed component 223 and the movable component 224 according to actual needs.

[0122] In some embodiments, the drive assembly may further include an elastic member for connecting the stationary member 223 and the moving member 224. The elastic member can undergo elastic deformation to elastically support the moving member 224.

[0123] The optical path folding assembly 230 is located behind the lens 210, i.e., on the light-emitting side of the lens 210, in the optical axis direction. It receives the imaging beam from the lens 210 and folds the optical path of the imaging beam before transmitting it to the photosensitive assembly 240. In this application, the optical path folding assembly 230 includes a prism 231, which is the component that actually performs the optical path folding. Exemplarily, the prism 231 can reflect the light from the lens 210 at least once.

[0124] In this application, the shape of prism 231 can be determined according to actual needs, and this application does not impose any special limitations on it. However, for ease of understanding, examples will be provided below with reference to the accompanying drawings, and will not be described in detail here.

[0125] In some embodiments, the optical path folding assembly 230 may further include a first support member 232, which is used to fix and support the prism 231. In some embodiments, the first support member 232 is also used to connect with other components of the camera module 200 (e.g., motor housing, photosensitive component 240, etc.). The structure of the first support member 232 can be designed according to the structure of the prism 231, and is not specifically limited herein.

[0126] In some embodiments, the optical path folding assembly 230 may further include a reflector, which can also be used to refract the optical path. For example, the reflector may be disposed at the front end of the prism 231 in the optical axis direction to transmit light from the lens 210 to the prism 231; or the reflector may be disposed at the rear end of the prism 231 in the optical axis direction to transmit light from the prism 231 to the photosensitive assembly 240.

[0127] The photosensitive component 240 is disposed on the rear side of the optical path folding component 230, that is, the light-emitting side of the optical path folding component 230, and is mainly used for imaging. For example, the photosensitive component 240 may include an image sensor 241 and a circuit board 242.

[0128] Image sensor 241 is a semiconductor chip used to convert collected external light signals into electrical signals. Specifically, the surface of image sensor 241 contains hundreds of thousands to millions of photodiodes. These photodiodes generate charges when illuminated, thereby converting the light signals captured by lens 210 into electrical signals. For example, image sensor 241 may be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) device.

[0129] Circuit board 242 is used to transmit electrical signals. It can be a flexible printed circuit (FPC), a printed circuit board (PCB), or a rigid-flex PCB. Image sensor 241 is electrically connected to circuit board 242. Thus, after image sensor 241 collects ambient light, it generates a signal based on the ambient light and transmits the signal to circuit board 242 for signal extraction.

[0130] In some embodiments, the photosensitive component 240 may further include a filter 243 disposed in the optical path, for example, between the prism 231 and the image sensor 241. The filter 243 can be used to eliminate unwanted light projected onto the image sensor 241, preventing problems such as ghosting, stray light, or color cast from occurring during image formation.

[0131] For example, filter 243 can be an infrared cut-off filter, a dual-pass filter, or a variable bandpass filter. An infrared cut-off filter allows visible light to pass through while blocking infrared light. A dual-pass filter allows both visible and infrared light from ambient light to pass through simultaneously, or allows visible light from ambient light and other specific wavelengths of light (e.g., ultraviolet light) to pass through simultaneously, or allows infrared light and other specific wavelengths of light (e.g., ultraviolet light) to pass through simultaneously. A variable bandpass filter allows the passband to be adjusted, for example, selectively allowing light of a specific wavelength (e.g., infrared light) to pass through.

[0132] In some embodiments, the photosensitive assembly 240 may further include a second support 244 for fixing and supporting the filter 243. The position of the second support 244 can be determined according to the position of the filter 243; for example, the second support 244 may be located between the prism 231 and the image sensor 241. The second support 244 may be connected to the optical path folding assembly 230 or the motor 220 to achieve relative fixation.

[0133] In some embodiments, reference Figure 4 The filter 243 can be disposed on the side of the second support 244 facing the prism 231 or on the side away from the prism 231. A through hole 2441 is provided on the second support 244 in the area corresponding to the image sensor 241 so that the light emitted from the prism 231 can smoothly enter the image sensor 241.

[0134] For example, when the filter 243 is disposed on the side of the second support member 244 facing the prism 231, a first countersunk hole 2442 may be provided on the side of the second support member 244 facing the prism 231. The diameter of the first countersunk hole 2442 may be slightly larger than the diameter of the through hole 2441. In this way, a stepped structure can be formed between the first countersunk hole 2442 and the through hole 2441. The filter 243 may be disposed on the stepped structure to reduce the thickness of the filter 243 after it is assembled with the second support member 244.

[0135] In some embodiments, the circuit board 242 can be fixedly connected to the second support member 244, for example, by bonding or snapping. Exemplarily, the circuit board 242 can be fixed to the side of the second support member 244 facing away from the prism 231. A second countersunk hole 2443 can be formed on the side of the second support member 244 facing away from the prism 231, and the receiving space formed by the second countersunk hole 2443 can be used to accommodate the image sensor 241. For example, the image sensor 241 is located in the second countersunk hole 2443 and fixedly connected to the circuit board 242, while the filter 243 is disposed on the side of the second support member 244 near the prism 231 and opposite to the image sensor 241.

[0136] In some embodiments, the photosensitive component 240 may further include a microelectromechanical system (MEMS) actuator, which drives the image sensor 241 to move along and / or perpendicular to the optical axis, thereby achieving autofocus and / or optical image stabilization. The MEMS actuator can be driven by electrostatic force, magnetoelectric force, piezoelectric force, thermoelectric force, etc. It should be understood that the specific structure of the MEMS actuator can be designed and selected according to the chosen driving method, and this application does not limit this.

[0137] from Figure 3 and Figure 4 As can be seen, the lens 210, prism 231, and image sensor 241 are arranged sequentially along the optical path. The imaging principle of the camera module 200 is as follows: the lens 210 receives light from the object being photographed and transmits it to the prism 231. The prism 231 refracts the light received from the lens 210, and the refracted beam exits the prism 231 and is projected onto the image sensor 241, thus achieving an image of the object being photographed.

[0138] refer to Figure 4 Since the moving member 224 needs to move within the motor housing, there must be a gap 201 between the moving member 224 and the stationary member 223 for the moving member 224 to move relative to the stationary member 223. A through hole 2211 is provided on the motor housing to avoid the lens 210 and the moving member 224. The gap 201 is connected to the through hole 2211 at one end, for example, the first end 202.

[0139] In this application, the motor 220 and the lens 210 are located on the same side of the prism 231. To ensure that the light emitted from the lens 210 does not interfere with the light entering the prism 231, the face of the prism 231 facing the lens 210 extends at least to the periphery of the motor housing. Thus, the other end of the gap 201, such as the second end 203, leads to the face of the prism 231 facing the lens 210. Consequently, a dust ingress path is formed by the through hole 2211 and the gap 201, allowing external dust to reach the prism 231 through this dust ingress path.

[0140] In some embodiments, the dust entry path can be tortuous. For example, if the distance between the periphery of the moving member 224 and the center line of the lens 210 is greater than the diameter of the through hole 2211, after the dust enters the through hole 2211, it needs to move away from the center line of the lens 210 and then enter the gap 201 to move towards the prism 231.

[0141] In other embodiments, the dust inlet path may extend in a direction parallel to the center line of lens 210. This can be understood as the gap 201 directly connecting to the through hole 2211 and the prism 231. For example, if the distance between the periphery of the moving member 224 and the center line of lens 210 is less than the diameter of the through hole 2211, dust enters the through hole 2211 and directly enters the gap 201, moving towards the prism 231 in a direction parallel to the center line of lens 210.

[0142] If dust reaches the prism 231 through the aforementioned dust entry path, and there is no interception, the dust will enter the light path along the surface of the prism 231, for example, reaching the area on the prism 231 used to receive light from the lens 210, thereby causing shadow problems and affecting the image quality.

[0143] To improve the problem of shadows caused by dust entering the module, in this embodiment of the application, the camera module 200 further includes a dust-collecting structure 250. The dust-collecting structure 250 is disposed on the side of the prism 231 facing the lens 210, and the dust-collecting structure 250 is disposed opposite to the outlet (i.e., the second end 203) of the gap 201 extending to the side of the prism 231.

[0144] The dust-catching structure 250 is used to adhere to dust inside the module. Thus, during the assembly or use of the camera module 200, if dust enters the gap 201 between the moving part 224 and the stationary part 223 through the through-hole 2211, or if the moving part 224 collides with the stationary part 223 under external impact, generating particulate dust, the dust-catching structure 250 can capture the dust falling from the exit end of the gap 201 towards the prism 231, preventing dust from entering the optical path and causing shadow problems, thereby improving image quality.

[0145] It should be understood that Figures 2 to 4 The structure shown in the diagram does not constitute a specific limitation on the camera module 200. The camera module 200 may include more or fewer components than shown in the diagram. For example, the camera module 200 may also include connectors and peripheral electronic components, which will not be described in detail here.

[0146] In this application, the dust-collecting structure 250 is fixed to the prism 231, as described below. Figure 5 The specific location of the dust collection structure 250 is described.

[0147] Figure 5 A partial top view of the camera module 200 after the lens 210, motor 220, and photosensitive component 240 have been removed is shown. Without removing these components, the lens 210 and motor 220 should be positioned on the side of the prism 231 perpendicular to the paper and facing outwards. Figure 5 The area enclosed by the dashed lines schematically represents the projection area (or projection range, projection) 204 of the second end 203 of the gap 201 on the surface 2301 of the prism 231 facing the lens 210 (hereinafter referred to as the first surface 2301 for ease of description). The area filled with diagonal lines schematically represents the area 231a on the first surface 2301 used to receive the light emitted from the lens 210, which is referred to as the incident area 231a of the prism 231 for ease of description. The dotted area schematically represents the dust-collecting structure 250.

[0148] In some embodiments, the dust-collecting structure 250 at least covers the projection area 204 of the second end 203 on the first surface 2301. In other words, the area covered by the dust-collecting structure 250 on the first surface 2301 is greater than or equal to the projection area 204 of the second end 203 on the first surface 2301, or the projection 204 of the second end 203 on the first surface 2301 is located within the coverage area of ​​the dust-collecting structure 250.

[0149] In this way, most of the dust 205 falling from the gap 201 can be captured by the dust-catching structure 250, which helps to improve the shadow problem.

[0150] In some embodiments, the area of ​​the dust-collecting structure 250 covering the prism 231 is outside the optically effective area of ​​the prism 231. Alternatively, the area of ​​the dust-collecting structure 250 covering the prism 231 does not overlap with the optically effective area of ​​the prism 231. Here, the optically effective area is the region on the prism 231 that participates in light propagation, such as the region for transmitting light and the region for reflecting light.

[0151] The dust-collecting structure 250 is located outside the optically effective area, which can avoid the influence of the dust-collecting structure 250 on the light propagation path, ensure the light intensity reaching the image sensor 241, and thus ensure image quality.

[0152] In some embodiments, the area covered by the dust-catching structure 250 is outside the optically effective area of ​​the first surface 2301. For example, the coverage area of ​​the dust-catching structure 250 does not overlap with the incident area 231a of the prism 231. In this way, the dust-catching structure 250 does not affect the intensity of the light incident on the prism 231, which is beneficial to ensuring the imaging quality of the image.

[0153] In some embodiments, reference Figure 5 If the first surface 2301 is also used to emit light to the photosensitive element 240, then the first surface 2301 also includes a region 231b for emitting light to the photosensitive element 240 (e.g., Figure 5 The grid-like filling area shown is referred to as the exit region 231b of the prism 231 for ease of description. Both the incident region 231a and the exit region 231b of the prism 231 are optically effective regions. Therefore, the coverage area of ​​the dust-catching structure 250 is outside the optically effective region on the first surface 2301. It can be understood that the coverage area of ​​the dust-catching structure 250 does not overlap with either the incident region 231a or the exit region 231b of the prism 231. For example, the dust-catching structure 250 is located between the incident region 231a and the exit region 231b. Thus, the dust-catching structure 250 does not affect the intensity of light incident on the prism 231 or the intensity of light incident on the photosensitive component 240, which helps to ensure image quality.

[0154] In some embodiments, if the first surface 2301 is also used to deflect the direction of light transmitted inside the prism 231, the first surface further includes a reflective region for deflecting the light, the reflective region being part of the optically effective region of the prism 231. Since no light is emitted from the reflective region, the area of ​​the dust-catching structure 250 covering the prism 231 can at least partially overlap with the reflective region. For example, see reference... Figure 5 The portion of the first surface 2301 that is blocked by the dust-collecting structure 250 can be a reflective area.

[0155] In some embodiments, the incident region 231a of the prism 231 and the dust-collecting structure 250 are along a first direction (e.g., Figure 5 The dust collection structure 250 is arranged along the second direction (e.g., the X-axis shown), and its coverage area can be along the second direction (e.g., the X-axis is shown). Figure 5 The Y-axis (as shown) extends to the edge of the first surface 2301, and the second direction is perpendicular to the first direction.

[0156] The edge of the first surface 2301 is typically an optically ineffective region, meaning it is an area that does not directly participate in light propagation or plays a major role. After the dust-collecting structure 250 extends into the optically ineffective region, it can be fixed to the prism 231 through the optically ineffective region, thus avoiding any adverse effects of the fixed dust-collecting structure 250 on the optically effective region on the first surface 2301, such as reducing the reflection efficiency of the prism 231, thereby ensuring image quality.

[0157] Generally, the optically ineffective areas of the prism 231 are coated with an ink layer 233, which is used to reduce stray light and improve the performance of the optical system. In some embodiments, the dust-catching structure 250 is partially connected to the prism 231, and the connection point can be located in the area where the ink layer 233 is located. This avoids the impact of fixing the dust-catching structure 250 on the performance of the prism 231.

[0158] In some embodiments, if the motor 220 can drive the lens 210 along a first direction (e.g.) Figure 5 (As shown in the X-axis direction) movement, for example, for optical image stabilization, the coverage area of ​​the dust-collecting structure 250 is outside the stroke of the motor 220 used for optical image stabilization, that is, the coverage area of ​​the dust-collecting structure 250 does not overlap with the stroke of the motor 220 used for optical image stabilization.

[0159] Generally, when the motor 220 drives the lens 210 to move, it is mainly the moving member 224 that drives the lens 210 to move. Therefore, the travel range of the motor 220 for optical image stabilization can be considered as the range of motion of the moving member 224. Therefore, the area of ​​the dust-collecting structure 250 covering the prism 231 does not overlap with the projection of the range of motion of the moving member 224 along the first direction onto the first surface 2301.

[0160] The coverage area of ​​the dust collection structure 250 does not overlap with the movement range of the moving part 224 of the motor 220 when it moves along the first direction, thus avoiding adverse effects of the dust collection structure 250 on the movement of the moving part 224, such as the dust collection structure 250 jamming the moving part 224 and causing optical image stabilization to stall.

[0161] For example, the coverage area of ​​the dust-collecting structure 250 extends beyond the travel range of the motor 220 for optical image stabilization. This can be understood as the dust-collecting structure 250 extending along the first direction towards the incident region 231a, reaching as far as the closest point to the moving member 224 when it moves along the first direction—that is, the position where the moving member travels the furthest along the first direction. Thus, the dust-collecting structure 250 neither affects the movement of the moving member 224 nor hinders its movement, while also providing a larger dust-collecting area and enhanced dust-collecting capability.

[0162] In other embodiments, if the distance between the actuator 224 and the first surface 2301 of the prism 231 is large enough that the actuator 224 will not come into contact with the dust-collecting structure 250 when moving in the first direction, the coverage area of ​​the dust-collecting structure 250 can also extend in the first direction into the optical image stabilization stroke of the actuator 224. For example, when the actuator 224 is not in operation, its projection on the first surface 2301 (specifically, the edge of the projection) partially overlaps with the coverage area of ​​the dust-collecting structure 250.

[0163] The coverage area of ​​the dust-collecting structure 250 extends to the range of motion of the moving member 224 when it moves along the first direction. The dust-collecting structure 250 has a larger dust-collecting area and enhanced dust-collecting ability, which can better improve the shadow problem.

[0164] In some embodiments, the thickness of the dust-collecting structure 250 is less than or equal to the distance between the moving member 224 and the first surface 2301. The smaller the thickness of the dust-collecting structure 250, the less or no interference it causes to the movement of the moving member 224.

[0165] It is understood that if there is a gap between the portion of the motor housing (e.g., base 222) above the first surface 2301 and the first surface 2301, the dust collection structure 250 can extend into the motor housing through the gap, for example, into the range of motion of the actuator 224.

[0166] In some embodiments, reference Figure 4 In the enlarged view, at least a portion of the motor housing (e.g., base 222 or outer casing 221) is located above the first surface 2301 of the prism 231. This portion of the motor housing may be provided with a receiving groove 222a, which has an opening radially toward the gap 201 of the lens 210. The dust-collecting structure 250, near the edge of the lens 210, can extend into the receiving groove 222a through this opening. That is, the motor housing may be provided with a receiving groove 222a opening toward the gap 201, and this receiving groove 222a can accommodate a portion of the dust-collecting structure 250.

[0167] In this application, the radial direction of lens 210 is the diameter direction of the lens element in lens 210, which is perpendicular to the center line of lens 210.

[0168] The inclusion groove 222a increases the dust collection area of ​​the dust collection structure 250, thus improving the dust collection effect. Furthermore, since a portion of the dust collection structure 250 is located within the inclusion groove 222a, the groove can provide a certain degree of restraint. For example, the dust collection structure 250 can be fixed not by adhesive bonding, but by a slot, restraining component, etc., in which case the surface of the inclusion groove 222a facing the dust collection structure 250 can restrain the dust collection structure 250.

[0169] The above combination Figure 5 This section mainly introduces the location of the dust collection structure 250, and will be combined with... Figures 6 to 11 The specific structure of the dust collection structure 250 is described below.

[0170] As an example, see reference Figure 6 The dust-collecting structure 250 can be an adhesive layer 251 adhered to the first surface 2301. For example, the adhesive layer 251 can be provided at the outlet on the side of the prism 231 extending toward the gap 201. When the adhesive layer 251 is used as the dust-collecting structure 250, it can be directly bonded to the first surface 2301, which simplifies the process.

[0171] As another example, see Figure 7 The dust collection structure 250 may include a laminated adhesive layer 251 and a support layer 252. The support layer 252 is used to connect to the prism 231, and the adhesive layer 251 is located on the side of the support layer 252 away from the prism 231 (that is, the side of the support layer 252 facing the second end 203). For example, the adhesive layer 251 is positioned facing the second end 203.

[0172] By setting an adhesive layer 251 for adhering dust in the support layer 252, the dust-collecting area of ​​the adhesive layer 251 can be better controlled, and the stress tension problem caused by the adhesive layer 251 being directly coated on the prism 231 can be reduced or avoided, thereby ensuring the surface accuracy of the prism.

[0173] In some cases, if a portion of the first surface 2301 is also used as a reflective area, the presence of a support layer 252 can reduce or eliminate the influence of the adhesive on the reflective area, such as reducing the impact of the adhesive on the reflection efficiency. This is because directly applying adhesive to the reflective area may disrupt its total internal reflection characteristics; for example, light may enter the adhesive material and fail to propagate along the designed light path, leading to a decrease in the reflection efficiency of the prism 231. The support layer 252, however, can prevent direct contact between the adhesive layer 251 and the reflective area as needed.

[0174] In some embodiments, the material of the support layer 252 may include plastic and / or metal.

[0175] Using plastic material reduces the weight of the support layer 252, resulting in lower costs. Using metal material allows for a reduction in the thickness of the support layer 252 by utilizing the excellent ductility of metal, and also helps maintain the optical performance of the prism 231. For example, when the dust-collecting structure 250 is located in the reflective area of ​​the prism 231, the metal support layer 252, even in direct contact with the prism 231, can achieve total internal reflection of light by utilizing the high reflectivity of metal, ensuring light intensity and reducing stray light.

[0176] For example, plastic materials include, but are not limited to: polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyimide (PI), thermoplastic elastomer (TPE), acrylonitrile butadiene styrene copolymer (ABS), etc.

[0177] For example, metallic materials include, but are not limited to: gold, silver, copper, aluminum, stainless steel, aluminum alloys, etc.

[0178] In some embodiments, the support layer 252 may be a thin film (or membrane material) or a sheet (or sheet material).

[0179] Generally, the thickness of the membrane material is less than that of the sheet material. For example, if the support layer 252 is a thin film, it can be a metal film or a polyester film, etc. As another example, if the support layer 252 is in sheet form, it can be a plastic sheet or a metal sheet, etc.

[0180] For example, the support layer 252 can be made of Mylar. Mylar is a polyester film formed from dimethyl terephthalate and ethylene glycol under the action of a specific catalyst through heating, transesterification, vacuum polycondensation, and biaxial stretching. It possesses dimensional stability, excellent tear strength, heat and cold resistance, moisture and water resistance, chemical corrosion resistance, and superior insulation properties. The adhesive layer 251 is applied to the Mylar; the stable performance of the Mylar ensures a long service life for the dust-collecting structure 250.

[0181] In some embodiments, if the support layer 252 is made of a membrane material, its thickness may be less than 0.2 millimeters (mm), for example, 0.01mm-0.1mm.

[0182] When the support layer 252 is made of a film material, its thickness is small, which reduces the space occupied by the dust-catching structure 250 in the autofocus direction of the lens 210, thereby reducing or avoiding the adverse effects of the dust-catching structure 250 on other components. In addition, the small thickness of the dust-catching structure 250 allows for a larger dust-catching area without affecting the movement of the motor 220, thus improving dust prevention capabilities.

[0183] In some embodiments, if the support layer 252 is made of sheet material, its thickness may be greater than or equal to 0.2 mm, for example, 0.2 mm to 0.7 mm.

[0184] When the support layer 252 is made of sheet material, the support strength is high, which is beneficial to the installation and fixation of the dust collection structure 250.

[0185] In this embodiment, there are multiple ways in which the support layer 252 is connected to the prism 231, which will be described below with reference to the accompanying drawings.

[0186] In one example, refer to Figure 7 The support layer 252 can be fixed to the prism 231 by a coating process, that is, the support layer 252 is a thin film coated on the surface of the prism 231 facing the lens 210. For example, the support layer 252 can be formed on the first surface 2301 by a coating process.

[0187] The coating process involves transferring gaseous, liquid, or solid materials to the surface of a substrate using various physical or chemical methods to form a uniform, dense, and strongly adherent thin film layer. The support layer 252 formed by the coating method has strong adhesion, high stability, and low stress, which can minimize the impact of the dust-collecting structure 250 on the performance of the prism 231 (such as surface accuracy and reflection efficiency).

[0188] In some embodiments, a support layer 252 may be formed on the first surface 2301 by processes such as physical vapor deposition (PVD) (e.g., sputtering, evaporation, ion plating), chemical vapor deposition (CVD), electroplating, solution deposition, spraying, laser-assisted coating, or molecular beam epitaxy (MBE).

[0189] For example, the support layer 252 can be a metal film formed by a coating process. In this way, if a portion of the first surface 2301 is also used to reflect light and the support layer 252 is disposed in the reflective area, the metal film can perform total internal reflection of the light, thereby ensuring the reflection efficiency of the prism 231.

[0190] In another example, refer to Figure 8 The support layer 252 can be fixed to the prism 231 by an adhesive process. For example, at least a portion of the support layer 252 can be bonded to the prism 231. Fixing the support layer 252 to the prism 231 by adhesive is a simple, flexible, and low-cost process.

[0191] In some embodiments, at least a portion of the support layer 252 is bonded to the first surface 2301 by an adhesive 253. In other words, part or all of the face of the support layer 252 facing the prism 231 is bonded to the first surface 2301 by the adhesive 253. When a portion of the support layer 252 is bonded to the first surface 2301, a gap exists between the remaining portion of the support layer 252 and the first surface 2301, except for the bonded portion.

[0192] For example, refer to Figure 8 An adhesive 253 is provided on the side of the support layer 252 facing the prism 231. The adhesive 253 is used to bond the support layer 252 to the prism 231 (e.g., the first surface 2301). The adhesive 253 is in contact with the first portion 2521 of the support layer 252, and the second portion 2522 of the support layer 252 is not covered by the adhesive 253. There is a gap between the second portion 2522 and the prism 231 (e.g., the first surface 2301).

[0193] The support layer 252 is partially bonded by adhesive material 253, which reduces the contact area between adhesive material 253 and prism 231, reduces the stress generated by adhesive material 253 on prism 231, and thus reduces the impact of adhesive material 253 on the surface accuracy of prism 231.

[0194] In some embodiments, the support layer 252 includes a first portion 2521 and a second portion 2522, the first portion 2521 being bonded to the edge of the first surface 2301 of the prism 231, and the second portion 2522 having a gap with the first surface 2301.

[0195] As mentioned above, the edge of the first surface 2301 is usually an optically ineffective area. The support layer 252 is connected to the optically ineffective area of ​​the prism 231, which can prevent the adhesive material from contacting the optically effective area and causing adverse effects on the optical performance of the optically effective area.

[0196] For example, adhesive material 253 is disposed at both ends of support layer 252 in the second direction (Y-axis direction as shown in the figure) to form a bridge-like adhesion. Correspondingly, the positions where adhesive material 253 contacts prism 231 are also at the two ends of prism 231 (specifically, the first surface 2301) in the second direction, reducing the influence of adhesive material 253 on the optically effective area of ​​prism 231.

[0197] In some embodiments, the location on the prism 231 where it is bonded to the support layer 252 (i.e., the location where the prism 231 contacts the adhesive material 253) is an optically ineffective region of the prism 231. Since the optically ineffective region does not directly participate in light propagation, the adhesive material 253 is disposed in the optically ineffective region to avoid the influence of the adhesive material 253 on the reflection efficiency of the prism 231.

[0198] In other embodiments, a portion of the support layer 252 is bonded to the surfaces of the prism 231 other than the first surface 2301 by an adhesive material 253. In this way, the adhesive material 253 does not directly act on the first surface 2301, thus avoiding the influence of the dust-collecting structure 250 on the optical performance of the first surface 2301.

[0199] For example, a portion of the support layer 252 is bonded to the optically ineffective surface of the prism 231 using an adhesive. The optically ineffective surface referred to here can be understood as a surface whose entire surface is an optically ineffective region.

[0200] In some embodiments, combined with Figure 5 and Figure 9 The first surface 2301 of the prism 231 includes an incident region 231a for receiving light from the lens 210, the incident region 231a being aligned with the dust-collecting structure 250 along a first direction (e.g., Figure 5 Arranged along the X-axis (as shown). Figure 9 The prism 231 also includes a second surface 2302 and a third surface 2303, wherein the second surface 2302 and the third surface 2303 are located on opposite sides of the first surface 2301 in a circumferential direction of rotation about a first direction (such as the X-axis). The opposite ends of the support layer 252 (e.g., the two first portions 2521) are bent and bonded to the second surface 2302 and the third surface 2303, respectively.

[0201] For example, the second surface 2302 and the third surface 2303 are respectively provided with adhesive material 253, and the two ends of the support layer 252 in the second direction (e.g., the Y-axis direction) are bent and bonded to the adhesive layer 253. Alternatively, the two ends of the support layer 252 (i.e., the two first portions 2521) are provided with adhesive material 253, and the first portions 2521 are bent relative to the main body of the support layer 252 and bonded to the second surface 2302 and the third surface 2303 respectively. The portion of the support layer 252 not covered by adhesive material 253 is the second portion 2522.

[0202] By fixing the end of the support layer 252 to the other surfaces of the prism 231 except for the first surface 2301, the adhesive material 253 can be prevented from contacting the first surface 2301, thereby avoiding the influence of the adhesive material 253 on the optical performance of the first surface 2301.

[0203] In some embodiments, the distance between the portion of the support layer 252 disposed opposite to the first surface 2301 (e.g., the second portion 2522) and the first surface 2301 is greater than or equal to zero.

[0204] The adhesive material 253 can be omitted between the support layer 252 and the first surface 2301, thus avoiding the influence of the adhesive material 253 on the first surface 2301. In addition, the distance between the support layer 252 and the first surface 2301 can be adjusted according to actual needs, thereby minimizing the space occupied by the dust collection structure 250 in the optical axis direction of the lens 210 (Z axis as shown in the figure).

[0205] In some embodiments, the second surface 2302 and the third surface 2303 are disposed opposite to each other. For example, the plane containing the second surface 2302 and the plane containing the third surface 2303 may be parallel to each other or intersect each other. Furthermore, the projection of the second surface 2302 along a second direction (e.g., the Y-axis direction) at least partially overlaps the projection of the third surface 2303 along the second direction.

[0206] In this embodiment of the application, the second surface 2302 is directly or indirectly connected to the first surface 2301, and the third surface 2303 is directly or indirectly connected to the first surface 2301.

[0207] For example, refer to Figure 9 The second surface 2302 is an adjacent surface of the first surface 2301, and / or the third surface 2303 is an adjacent surface of the first surface 2301. In this application, if two surfaces intersect, that is, have the same edge line, the two surfaces can be called adjacent surfaces of each other. By connecting the support layer 252 to the adjacent surface of the first surface 2301, the size of the support layer 252 can be reduced, saving costs.

[0208] For example, refer to Figure 10 The second surface 2302 is connected to the first surface 2301 via the fourth surface 2304, and / or the third surface 2303 is connected to the first surface 2301 via the fifth surface 2305.

[0209] In some embodiments, the second surface 2302 and / or the third surface 2303 are optically ineffective surfaces of the prism 231. The support layer 252 is bonded to the optically ineffective surfaces of the prism 231, reducing the impact of the adhesive material on the optical performance of the prism 231.

[0210] In some embodiments, the support layer 252 is generally U-shaped.

[0211] In some other embodiments, reference is made to Figure 11 One end of the support layer 252 is bent in the second direction (such as the Y-axis direction) and bonded to the second surface 2302 or the third surface 2303 by adhesive material 253. The other end of the support layer 252 in the second direction is bonded to the first surface 2301 by adhesive material 253.

[0212] In practical applications, those skilled in the art can determine the bonding position between the support layer 252 and the prism 231 according to actual needs; the above is merely an illustrative example. For instance, in some other embodiments, the support layer 252 may not be connected to the prism 231, but rather to the first support member 232 used to fix the prism 231. For example, the first support member 232 may have a groove for placing the prism 231, the depth of which is greater than or equal to the dimension of the prism 231 in the extension direction of the center line of the lens 210, and the dust-catching structure 250 may be fixed to the end face of the groove facing the lens 210.

[0213] The above mainly introduced the setting method of the support layer 252. The adhesive layer 251 will be described in detail below.

[0214] In some embodiments, reference Figures 7 to 11 The adhesive layer 251 covers at least a portion of the surface of the support layer 252 facing the adhesive layer 251. That is, the area of ​​the adhesive layer 251 covering the support layer 252 is less than or equal to the area of ​​the support layer 252 covering the prism 231. For example, the ratio of the area of ​​the adhesive layer 251 to the area of ​​the support layer 252 is greater than or equal to 10% and less than or equal to 90%. In practical applications, the size of the coverage area of ​​the adhesive layer 251 can be designed according to needs (e.g., the area of ​​the support layer 252, the area of ​​the outlet of the gap 201 on one side of the prism 231, etc.). The larger the coverage area of ​​the adhesive layer 251, the stronger the dust collection capability of the dust collection structure 250.

[0215] For example, the projection of the exit (i.e., the second end 203) of the gap 201 on one side of the prism 231 onto the first surface 2301 lies within the coverage area of ​​the adhesive layer 251. In this way, dust falling from the gap 201 can be captured by the dust-catching structure 250, which helps to improve the shadow problem.

[0216] In this embodiment, the adhesive layer 251 includes an adhesive. For example, the adhesive layer 251 can be a backing adhesive (or pressure-sensitive adhesive), double-sided adhesive, or dust-proof adhesive, etc.

[0217] Pressure-sensitive adhesive (PSA) is a type of adhesive with special properties. It forms a bond under pressure without requiring any additional activators or moisture, maintains its tackiness over long-term use, and can be easily peeled off. For example, the material of a PSA may include at least one of the following: polymer, resin, or rubber. When the adhesive layer 251 is a backing adhesive, the backing adhesive can be directly applied to the support layer 252.

[0218] Double-sided tape is an adhesive tape with pressure-sensitive adhesive coated on the surface of a substrate (such as paper, cloth, plastic film, etc.), and both sides of the substrate are adhesive. When the adhesive layer 251 is double-sided tape, the adhesive layer 251 is bonded to the support layer 252 through the pressure-sensitive adhesive on one side of the substrate, and dust is captured through the pressure-sensitive adhesive on the other side of the substrate.

[0219] Dust-proof adhesive (or dust-catching adhesive) is a special adhesive for dust collection. It is usually made of acrylic polyurethane material, which has high dust collection efficiency and adhesion, and has an autonomous intelligent absorption enhancement mechanism.

[0220] In some embodiments, the thickness of adhesive layer 251 is greater than or equal to 5 micrometers and less than or equal to 200 micrometers. For example, the thickness of adhesive layer 251 is less than or equal to 30 micrometers.

[0221] The adhesive layer 251 is selected with an appropriate thickness so that it can have a strong dust collection ability without interfering with the layout of other components.

[0222] The adhesive material 253 mentioned in the foregoing embodiments is made of a similar material to the adhesive layer 251. In some embodiments, the adhesive material 253 may be a backing adhesive (or pressure-sensitive adhesive), double-sided adhesive, dustproof adhesive, or dispensing adhesive, etc.

[0223] Here, the adhesive material is in a fluid state during the bonding process. Using adhesive material as an adhesive allows for real-time adjustment of the thickness of the adhesive 253 according to the available space, thereby meeting both bonding effect and space requirements. Examples of adhesive materials include, but are not limited to, silver glue, red glue, hot melt adhesive, silicone, quick-drying adhesive, and epoxy adhesive.

[0224] In some embodiments, the adhesive material 253 and the dust-collecting structure 250 can be relatively independent components. It can be assumed that the adhesive material 253 is only used when assembling the dust-collecting structure 250. In this way, in practical applications, the bonding position of the adhesive material 253 can be determined according to the specific installation position of the dust-collecting structure 250, which provides high flexibility.

[0225] In other embodiments, the adhesive material 253 can be part of the dust-collecting structure 250, meaning the dust-collecting structure 250 also has the adhesive material 253 in its unassembled state. Specifically, the dust-collecting structure 250 may include a stacked adhesive material 253, a support layer 252, and an adhesive layer 251. For ease of description, this application refers to the adhesive layer 251 as the first adhesive layer 251 and the adhesive material 253 as the second adhesive layer 253. The support layer 252 is disposed between the first adhesive layer 251 and the second adhesive layer 253, wherein the first adhesive layer 251 is close to the lens 210 and is used for dust collection, and the second adhesive layer 253 is close to the prism 231 and is used to fix the dust-collecting structure 250. The dust-collecting structure 250 has a second adhesive layer 253 for fixation, which facilitates installation.

[0226] The dust-collecting structure 250 described in the foregoing embodiments mainly achieves dust collection through adhesives. In other embodiments, the dust-collecting structure 250 can also achieve dust collection through other means, such as electrostatic adsorption dust collection, negative pressure dust collection, etc. For example, in the foregoing embodiments, the adhesive layer 251 can be replaced with an electrostatic adsorption layer to attract dust through electrostatic adsorption.

[0227] As mentioned earlier, prism 231 can reflect light from lens 210 at least once. The following section combines... Figures 12 to 16 The structure of Prism 231 and the layout of the corresponding camera module are introduced.

[0228] As an example, see reference Figure 12 The prism 231 includes an incident surface 2311, an exit surface 2312, and a reflecting surface 2313 (hereinafter referred to as the first reflecting surface for ease of description). The incident surface 2311 is used to receive light rays emitted from the lens 210, for example, the incident surface 2311 is arranged opposite to the lens 210. The exit surface 2312 is used to emit light rays from the prism 231, for example, the exit surface 2312 is arranged opposite to the image sensor 241. The incident surface 2311 and the exit surface 2312 are perpendicular. The first reflecting surface 2313 forms an angle of 45° with the incident surface 2311. Thus, light rays emitted from the lens 210 pass through the incident surface 2311 and are directed towards the first reflecting surface 2313 in a third direction. The first reflecting surface 2313 refracts the direction of the light by 90° and directs it towards the exit surface 2312 in a fourth direction, which is perpendicular to the third direction. For example, the fourth direction is parallel to the first direction, as shown in the X-axis direction in the figure.

[0229] In this embodiment, the first surface 2301 of the prism 231 facing the lens 210 is used only to receive incident light. The prism 231 is, for example, a right-angled triangular prism or a right-angled trapezoidal prism. The first surface 2301 can be the inclined surface of a right-angled triangular prism or a right-angled trapezoidal prism.

[0230] For example, the dust collection structure 250 may be disposed on the incident surface 2311. The centerline of the lens 210 is perpendicular to and coplanar with the centerline of the image sensor 241.

[0231] As another example, see Figure 13 The prism 231 includes an incident surface 2311, an exit surface 2312, and two reflecting surfaces (hereinafter referred to as the first reflecting surface 2313 and the second reflecting surface 2314, respectively, for ease of description). The incident surface 2311 is parallel to the exit surface 2312, and the second reflecting surface 2314 is parallel to the first reflecting surface 2313. The angle between the first reflecting surface 2313 and the incident surface 2311 is 45°. Thus, light rays emitted from the lens 210 pass through the incident surface 2311 and are directed along a third direction to the first reflecting surface 2313. The first reflecting surface 2313 deflects the direction of the light by 90° and directs it along a fourth direction to the second reflecting surface 2314. The second reflecting surface 2314 deflects the direction of the light by another 90° and directs it along a fifth direction to the exit surface 2312. The direction of light transmission from the second reflecting surface 2314 to the exiting surface 2312 (i.e., the fifth direction) is the same as the direction of light transmission from the incident surface 2311 to the first reflecting surface 2313 (i.e., the third direction). The fourth direction is parallel to the aforementioned first direction.

[0232] In this embodiment, the first surface 2301 of the prism 231 facing the lens 210 is used only to receive incident light. For example, the prism 231 can be a parallelogram prism.

[0233] For example, the dust collection structure 250 may be disposed on the incident surface 2311. The centerline of the lens 210 is parallel to the centerline of the image sensor 241, and the lens 210 and the image sensor 241 are disposed on opposite sides of the prism 231.

[0234] As another example, see Figure 14 The prism 231 includes an incident surface 2311, an exit surface 2312, and two reflecting surfaces (hereinafter referred to as the first reflecting surface 2313 and the second reflecting surface 2314, respectively, for ease of description). The incident surface 2311 is parallel to the exit surface 2312. The angle between the first reflecting surface 2313 and the incident surface 2311 is 45°, and the angle between the second reflecting surface 2314 and the exit surface 2312 is 45°. The plane containing the first reflecting surface 2313 is perpendicular to the plane containing the second reflecting surface 2314. Thus, light rays emitted from the lens 210 pass through the incident surface 2311 and travel along a third direction to the first reflecting surface 2313. The first reflecting surface 2313 deflects the light by 90° and then travels along a fourth direction to the second reflecting surface 2314. The second reflecting surface 2314 deflects the light by another 90° and then travels along a fifth direction to the exit surface 2312. The fifth direction is opposite to the third direction. The fourth direction is parallel to the first direction mentioned above.

[0235] In some embodiments, the incident surface 2311 and the exit surface 2312 are located in the same plane. Accordingly, a portion of the first surface 2301 of the prism 231 facing the lens 210 is used to receive incident light rays, and a portion of the first surface 2301 is used to emit light rays. For example, the prism 231 can be an isosceles trapezoidal prism or an isosceles triangular prism.

[0236] For example, the dust-collecting structure 250 may be disposed on the first surface 2301, for example, between the incident surface 2311 and the exit surface 2312. The centerline of the lens 210 is parallel to the centerline of the image sensor 241, and the lens 210 and the image sensor 241 are disposed on the same side of the prism 231.

[0237] As yet another example, see reference Figure 15 The prism 231 includes an incident surface 2311, an exit surface 2312, and two reflecting surfaces (hereinafter referred to as the first reflecting surface 2313 and the second reflecting surface 2314, respectively, for ease of description). The incident surface 2311 is perpendicular to the exit surface 2312. The angle between the first reflecting surface 2313 and the incident surface 2311 is 45°, and the angle between the second reflecting surface 2314 and the exit surface 2312 is 45°. Thus, light rays emitted from the lens 210 pass through the incident surface 2311 and are directed along a third direction to the first reflecting surface 2313. The first reflecting surface 2313 deflects the direction of the light by 90° and directs it along a fourth direction to the second reflecting surface 2314. The second reflecting surface 2314 deflects the direction of the light by another 90° and directs it along a fifth direction to the exit surface 2312. The fifth direction is perpendicular to the third direction.

[0238] In this embodiment, the first surface 2301 of the prism 231 facing the lens 210 is used only to receive incident light. For example, the prism 231 can be an irregularly shaped prism.

[0239] For example, the dust collection structure 250 may be disposed on the incident surface 2311. The centerline of the lens 210 is perpendicular to and out of plane with the centerline of the image sensor 241, and the lens 210 and the image sensor 241 are disposed on adjacent sides of the prism 231.

[0240] As another example, see [reference] Figure 16The prism 231 includes an incident surface 2311, an exit surface 2312, and three reflecting surfaces (hereinafter referred to as the first reflecting surface 2313, the second reflecting surface 2314, and the third reflecting surface 2315, respectively, for ease of description). The incident surface 2311, the exit surface 2312, and the second reflecting surface 2314 are parallel to each other, and the third reflecting surface 2315 is positioned opposite to the first reflecting surface 2313. The angle between the plane containing the first reflecting surface 2313 and the plane containing the third reflecting surface 2315 is 120°. The incident surface 2311, the exit surface 2312, and the second reflecting surface 2314 are located on the same side of the first reflecting surface 2313 and the third reflecting surface 2315. Thus, the light emitted from lens 210 passes through incident surface 2311 and travels along a third direction to the first reflecting surface 2313. The first reflecting surface 2313 deflects the light by 60° and then travels along a fourth direction to the second reflecting surface 2314. The second reflecting surface 2314 deflects the light by 120° and then travels along a fifth direction to the third reflecting surface 2315. The third reflecting surface 2315 then deflects the light by 60° and then travels along a sixth direction to the exit surface 2312. The sixth direction is opposite to the third direction. The angle between the fourth and fifth directions is 120°.

[0241] In some embodiments, the incident surface 2311, the exit surface 2312, and the second reflecting surface 2314 are located in the same plane. Accordingly, a portion of the first surface 2301 of the prism 231 facing the lens 210 (i.e., the incident region 231a) is used to receive incident light, a portion is used to reflect light, and a portion (i.e., the exit region 231b) is used to emit light. The prism 231 can be, for example, an isosceles trapezoidal prism or an isosceles triangular prism.

[0242] For example, the dust-catching structure 250 can be disposed on the first surface 2301, such as in the area of ​​the second reflective surface 2314. The dust-catching structure 250 is capable of preventing dust falling from the gap 201 from entering the incident area 231a and the exit area 231b. The centerline of the lens 210 is parallel to the centerline of the image sensor 241, and the lens 210 and the image sensor 241 are disposed on the same side of the prism 231.

[0243] against Figure 14 or Figure 16In the module layout shown, the image sensor 241 and lens 210 are located on the same side of the prism 231, and the distance between the center of the image sensor 241 and the center of the lens 210 must meet certain conditions. Therefore, the space between the image sensor 241 and the lens 210 is very limited, and the components between them need to be arranged as reasonably as possible. To adapt to the space requirements, the motor component located in front of the image sensor 241 and the lens 210 will be structurally optimized or its position adjusted. This will result in the gap 201 described above passing directly through the through hole 2211 and the prism 231, causing dust to pass directly through the through hole 2211 to the surface of the prism 231 and then enter the incident or exit area, forming a shadow and causing product failure. The dust-catching structure 250 provided in this embodiment can provide a dust-blocking solution for the multi-refractive prism, trapping dust on the dust ingress path and preventing dust from entering the optically effective area.

[0244] Understandable. Figures 12 to 16 The direction of light propagation and the shape of prism 231 are merely exemplary. In other embodiments, prism 231 may reflect light from lens 210 more than three times, and the shape of prism 231 may be designed according to actual needs.

[0245] It should also be understood that Figures 12 to 16 The light propagation path shown is merely exemplary, and those skilled in the art can design the optical path according to actual needs. For example, in other examples, the first surface 2301 of the prism 231 facing the lens 210 can be used to receive incident light and reflect light propagating inside the prism 231, but not for emitting light. Whether the first surface 2301 is used only to receive light from the lens 210, or to simultaneously reflect and / or emit light, can be determined according to actual needs, and this application does not impose further limitations in this regard.

[0246] It should be noted that, Figures 12 to 16 The propagation path of light is described using the principal ray in the central field of view as an example. Therefore, the third, fourth, fifth, and sixth directions mentioned in the above description all refer to the propagation direction of the principal ray.

[0247] This application also provides an electronic device, which includes an image processor and the camera module described in the foregoing embodiments. The image processor is used to receive and process images acquired by the camera module. For example, the image processor can be... Figure 1 Image processor 105 in the image processor.

[0248] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0249] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A camera module (200), characterized in that, include: Lens (210); The motor (220) includes a stationary component (223) and a moving component (224), the moving component (224) being connected to the lens (210), and the moving component (224) having a gap (201) between the stationary component (223) for the moving component (224) to move relative to the stationary component (223); A prism (231) is disposed on the light-emitting side of the lens (210), the lens (210) and the gap (201) are located on the same side of the prism (231), and the prism (231) is used to receive light from the lens (210) and reflect the light at least once; A dust-collecting structure (250) is disposed on the side of the prism (231) facing the lens (210), and the dust-collecting structure (250) is disposed opposite to the outlet of the gap (201) extending to the side of the prism (231).

2. The camera module (200) according to claim 1, characterized in that, The dust collection structure (250) includes a first adhesive layer (251) disposed toward the outlet.

3. The camera module (200) according to claim 2, characterized in that, The dust collection structure (250) further includes a support layer (252) stacked with the first adhesive layer (251), the support layer (252) being connected to the prism (231), and the first adhesive layer (251) being disposed on the side of the support layer (252) facing the outlet.

4. The camera module (200) according to claim 3, characterized in that, The support layer (252) is a thin film deposited on the surface of the prism (231) facing the lens (210).

5. The camera module (200) according to claim 3, characterized in that, At least a portion of the support layer (252) is bonded to the prism (231), and the position on the prism (231) for bonding with the support layer (252) is in the optically ineffective region of the prism (231).

6. The camera module (200) according to claim 5, characterized in that, The support layer (252) includes a first part (2521) and a second part (2522). The first part (2521) is bonded to the edge of the first surface (2301) of the prism (231). The second part (2522) has a gap with the first surface (2301). The first surface (2301) is the surface of the prism (231) facing the lens (210).

7. The camera module (200) according to claim 5, characterized in that, The first surface (2301) of the prism (231) includes an incident area (231a) for receiving light from the lens (210), the incident area (231a) and the dust-collecting structure (250) being arranged along a first direction, the first surface (2301) being the surface of the prism (231) facing the lens (210); The prism (231) further includes a second surface (2302) and a third surface (2303), wherein the second surface (2302) and the third surface (2303) are located on opposite sides of the first surface (2301) in a circumferential direction of rotation about the first direction; The two ends of the support layer (252) are bent and bonded to the second surface (2302) and the third surface (2303) respectively. The distance between the part of the support layer (252) that is opposite to the first surface (2301) and the first surface (2301) is greater than or equal to zero.

8. The camera module (200) according to claim 7, characterized in that, The second surface (2302) is adjacent to the first surface (2301), and / or the third surface (2303) is adjacent to the first surface (2301).

9. The camera module (200) according to any one of claims 6 to 8, characterized in that, The support layer (252) is U-shaped.

10. The camera module (200) according to any one of claims 5 to 9, characterized in that, The dust-collecting structure (250) further includes a second adhesive layer (253), which is disposed on the side of the support layer (252) facing the prism (231) and is used to bond with the prism (231).

11. The camera module (200) according to any one of claims 3 to 10, characterized in that, The area of ​​the first adhesive layer (251) is less than or equal to the area of ​​the support layer (252).

12. The camera module (200) according to any one of claims 2 to 11, characterized in that, The projection of the outlet onto the surface of the prism (231) facing the lens (210) lies within the coverage area of ​​the first adhesive layer (251).

13. The camera module (200) according to any one of claims 2 to 12, characterized in that, The thickness of the first adhesive layer (251) is greater than or equal to 5 micrometers and less than or equal to 200 micrometers.

14. The camera module (200) according to any one of claims 1 to 13, characterized in that, The area of ​​the dust-collecting structure (250) covering the prism (231) is outside the optically effective area of ​​the prism (231).

15. The camera module (200) according to any one of claims 1 to 14, characterized in that, The surface of the prism (231) facing the lens (210) includes an incident area (231a) for receiving light from the lens (210). The incident area (231a) and the dust-collecting structure (250) are arranged along a first direction. The actuator (224) is used to drive the lens (210) to move along the first direction. The area of ​​the dust-collecting structure (250) covering the prism (231) and the range of movement of the actuator (224) along the first direction do not overlap in projection onto the surface of the prism (231) facing the lens (210).

16. The camera module (200) according to any one of claims 1 to 15, characterized in that, The camera module also includes: An image sensor (241) is used to receive light from the prism (231) and form an image. The image sensor (241) and the lens (210) are located on the same side of the prism (231). The surface of the prism (231) facing the lens (210) includes an incident area (231a) and an exit area (231b). The incident area (231a) is used to receive light from the lens (210), and the exit area (231b) is used to emit light to the image sensor (241). The dust-collecting structure (250) is disposed between the incident area (231a) and the exit area (231b).

17. The camera module (200) according to any one of claims 1 to 16, characterized in that, The surface of the prism (231) facing the lens (210) also includes a reflective region for reversing the direction of light propagating inside the prism (231), and the area of ​​the dust-collecting structure (250) covering the prism (231) at least partially overlaps with the reflective region.

18. The camera module (200) according to any one of claims 1 to 17, characterized in that, The motor (220) also includes a housing (221) and a base (222), the housing (221) and the base (222) being fastened together to form a receiving space, and the lens (210), the moving part (224) and the fixed part (223) being housed in the receiving space; The outer casing (221) has a through hole (2211) on the side opposite to the base (222). The through hole (2211) is used for light from the subject to enter the lens (210). The through hole (2211) is connected to the gap (201).

19. The camera module (200) according to claim 18, characterized in that, The base (222) includes a receiving groove (222a) having an opening in the radial direction of the lens (210) toward the gap (201), and the dust-collecting structure (250) extending into the receiving groove (222a) near the edge of the lens (210).

20. The camera module (200) according to claim 18 or 19, characterized in that, The dust inlet path formed by the through hole (2211) and the gap (201) extends in a direction parallel to the center line of the lens (210).

21. An electronic device (100), characterized in that, The system includes an image processor (105) and a camera module (200) as described in any one of claims 1 to 20, wherein the image processor (105) is communicatively connected to the camera module (200) and the image processor (105) is used to receive and process images acquired by the camera module (200).

Images