Camera module, electronic device, and lens foreign matter detection method and apparatus

Abstract

The application discloses a camera module, an electronic device, and a lens foreign matter detection method and device, and belongs to the technical field of electronic devices. The camera module comprises a lens protection assembly and a lens. The lens protection assembly is located on the light-emitting side of the lens. The lens protection assembly comprises a transparent assembly, a light-uniformizing liquid, and a driving piece. The transparent assembly comprises oppositely arranged first and second parts, and the first and second parts each have a light-transmitting area. The light-transmitting area at least partially overlaps with the light-emitting area of the lens. The first and second parts are relatively movable. The light-uniformizing liquid is located in a cavity formed by the first and second parts. When the camera module is in a foreign matter detection working state, the driving piece controls the first and second parts to move away from each other, and the light-uniformizing liquid is distributed between the first and second parts. When the camera module is not in the foreign matter detection working state, the driving piece controls the first and second parts to abut.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, specifically relating to a camera module, electronic equipment, and a method and apparatus for detecting foreign objects in a lens. Background Technology

[0002] With the development and widespread use of smartphones, people's demands for their functions are also increasing. Photography is a crucial feature of smartphones, and people have ever higher expectations for the image quality. However, the presence of foreign objects such as dust or debris inside the camera module can cause a "black blotch" phenomenon in the output image, affecting the shooting quality. This "black blotch" phenomenon refers to a situation where, even when the brightness of all areas in the shooting scene is uniform, one area in the output image is significantly darker than the other areas.

[0003] Currently, foreign object detection for the "black spot" phenomenon in smartphones is typically tested before the smartphone leaves the factory. The process involves taking a picture of a uniformly bright white background with the smartphone. An image recognition algorithm is then used to detect the presence of a "black spot" area in the captured image.

[0004] However, this method for detecting foreign objects in a camera lens requires a high degree of brightness uniformity from the whiteboard. Users may find it difficult to find a whiteboard that meets these uniformity requirements, preventing them from using current smartphones for this purpose. This results in the inability to detect black spots in real-time on smartphones. Summary of the Invention

[0005] The purpose of this application is to provide a method and apparatus for detecting foreign objects in a camera module, electronic device, and lens, which can solve the problem that real-time black spot detection cannot be achieved on current smartphones.

[0006] In a first aspect, embodiments of this application provide a camera module, the camera module comprising:

[0007] A lens protection assembly and a lens, wherein the lens protection assembly is located on the light-emitting side of the lens, and the lens protection assembly includes: a transparent component, a light-diffusing liquid, and a driving component;

[0008] The transparent component includes a first part and a second part disposed opposite to each other, and both the first part and the second part have light-transmitting areas. The light-transmitting areas at least partially overlap with the light-emitting area of ​​the lens. The first part and the second part are movable relative to each other. The light-diffusing liquid is located in the cavity formed by the first part and the second part. The first part and / or the second part are connected to the driving component.

[0009] When the camera module is in the foreign object detection working state, the driving component controls the first part and the second part to move away from each other, and the light-diffusing liquid is distributed between the first part and the second part;

[0010] When the camera module is not in the foreign object detection working state, the driving component controls the first part and the second part to abut.

[0011] Secondly, embodiments of this application provide an electronic device, the electronic device including: any of the camera modules described in the first aspect above.

[0012] Thirdly, embodiments of this application provide a lens foreign object detection method, applied to the controller of an electronic device, the electronic device including any of the camera modules described in the first aspect above, the method comprising:

[0013] Receive trigger input for foreign object detection;

[0014] In response to the trigger input, the first part and the second part are controlled to move away from each other via the drive;

[0015] With the light-diffusing liquid distributed between the first part and the second part, the target image captured by the camera module is obtained;

[0016] The target image is subjected to abnormally dark or bright areas for detection, and the detection results are used to indicate whether there are foreign objects inside the camera module.

[0017] Fourthly, embodiments of this application provide a lens foreign object detection device, applied to the controller of an electronic device, the electronic device including any of the camera modules described in the first aspect above, the device comprising:

[0018] The receiving module is used to receive trigger inputs for foreign object detection;

[0019] A control module is configured to, in response to the trigger input, control the first part and the second part to move away from each other via the drive element;

[0020] The acquisition module is used to acquire the target image captured by the camera module when the light-diffusing liquid is distributed between the first part and the second part;

[0021] The detection module is used to detect abnormally dark or bright areas in the target image and obtain detection results, which are used to indicate whether there are foreign objects inside the camera module.

[0022] Fifthly, embodiments of this application provide an electronic device including a camera module, a processor, and a memory as described in any of the first aspects above. The memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, they implement the steps of the method described in the third aspect.

[0023] In a sixth aspect, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the third aspect.

[0024] In a seventh aspect, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method described in the third aspect.

[0025] Eighthly, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method described in the third aspect.

[0026] In this embodiment, the camera module includes a lens protection assembly and a lens. The lens protection assembly is located on the light-emitting side of the lens and includes a transparent component, a light-diffusing liquid, and a driving component. The transparent component includes a first part and a second part disposed opposite to each other, both having light-transmitting areas. The light-transmitting areas at least partially overlap with the light-emitting area of ​​the lens, and the first and second parts are relatively movable. The light-diffusing liquid is located within the cavity formed by the first and second parts, and the first and / or second parts are connected to the driving component. In this technical solution, when the camera module is in foreign object detection mode, the driving component can control the first and second parts to move away from each other, so that the light-diffusing liquid is distributed between the first and second parts. The light-diffusing liquid allows light entering its interior to undergo multiple scatterings, resulting in output light with relatively uniform brightness. At this time, the light-diffusing liquid distributed between the first and second parts resembles a uniformly emitting whiteboard. Therefore, when using a camera module in foreign object detection mode to take pictures for lens foreign object detection, the requirement for brightness uniformity of the shooting scene is reduced. This means that the lens foreign object detection processing of smartphones equipped with this camera module is no longer limited by white boards with high brightness uniformity requirements, ensuring real-time detection of black spots on smartphones. Furthermore, because the camera module in this technical solution has lower requirements for brightness uniformity of the shooting scene when performing lens foreign object detection, the impact of the brightness uniformity of the shooting scene on the lens foreign object detection results is also reduced, improving the accuracy of the lens foreign object detection results. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a transparent component provided in this application;

[0029] Figure 3 This is a schematic diagram of another transparent component provided in this application.

[0030] Figure 4 This is a structural schematic diagram of yet another transparent component provided in this application;

[0031] Figure 5 This is a schematic diagram of the structure of a transparent component provided in another embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of another transparent component provided in another embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the structure of yet another transparent component provided in another embodiment of this application;

[0034] Figure 8 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the structure of a driving component provided in an embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the structure of another camera module provided in the embodiments of this application;

[0037] Figure 11 This is a schematic diagram of another camera module provided in the embodiments of this application;

[0038] Figure 12 This is a flowchart of a lens foreign object detection method provided in an embodiment of this application;

[0039] Figure 13 This is a schematic diagram of an image provided in an embodiment of this application, showing a scenario where no black spots are present.

[0040] Figure 14 This is a schematic diagram of a screen showing a black patch phenomenon provided in an embodiment of this application;

[0041] Figure 15 This is a block diagram of a lens foreign object detection device provided in an embodiment of this application;

[0042] Figure 16 This is a block diagram of an electronic device provided in an embodiment of this application;

[0043] Figure 17 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0046] The camera module, electronic device, and lens foreign object detection method and apparatus provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0047] Please refer to Figure 1 This illustrates a structural schematic diagram of a camera module provided in an embodiment of this application. Figure 1 As shown, the camera module 100 includes a lens protection assembly 101 and a lens 102. The lens protection assembly 101 is located on the light-emitting side of the lens 102. The lens protection assembly 101 includes a transparent component 1011, a light-diffusing liquid 1012, and a driving component 1013. The light-diffusing liquid 1012 is... Figure 1 Components marked with a line in the middle.

[0048] The transparent component 1011 includes a first part and a second part disposed opposite to each other, and both the first and second parts have light-transmitting areas, which at least partially overlap with the light-emitting area of ​​the lens 102. The first and second parts are movable relative to each other. The first part and / or the second part is connected to a drive member 1013. A light-diffusing liquid 1012 is located in the cavity formed by the first and second parts. The cavity can be referred to as a liquid storage cavity. The volume of the cavity can change with the relative movement of the first and second parts. Optionally, the light-diffusing liquid 1012 can be an opaque, turbid liquid with light-diffusing properties. For example, the light-diffusing liquid 1012 is a white, opaque, turbid liquid.

[0049] When the camera module 100 is in foreign object detection mode, the driving component 1013 controls the first and second parts to move away from each other, and the light-diffusing liquid 1012 is distributed between the first and second parts. When the camera module 100 is not in foreign object detection mode, the driving component 1013 controls the first and second parts to come into contact. In this embodiment, when the light-diffusing liquid 1012 is a white, opaque, turbid liquid, when the camera module 100 is in foreign object detection mode, the light-transmitting area of ​​the transparent component 1011 is opaque because the light-diffusing liquid 1012 is distributed between the first and second parts. When the camera module 100 is not in foreign object detection mode, the light-diffusing liquid 1012 is not present between the first and second parts because the first and second parts are in contact, thus the light-transmitting area of ​​the transparent component 1011 is transparent. Based on this, the lens protection component 101 can also be called a transparent adjustable CG component.

[0050] In an optional configuration, the second part is connected to the drive unit 1013. When the camera module 100 is in foreign object detection mode, the drive unit 1013 provides a force from the first part to the second part, causing the second part to move away from the first part, thus distancing the first and second parts. With the first and second parts distancing themselves, a space exists between them, and a homogenizing liquid is distributed within this space. In this state, when a terminal with the camera module takes a picture using the camera module, the light entering the camera module undergoes multiple scatterings as it passes through the homogenizing liquid, resulting in a relatively uniform light output. The terminal can use the captured image to perform lens foreign object detection, determining the lens foreign object detection result by detecting the presence of "black spots" in the image.

[0051] Similarly, when the camera module 100 is not in foreign object detection mode, the drive unit 1013 provides a force from the second part to the first part, causing the second part to move closer to the first part, so that the first and second parts come into contact. When the first and second parts are in contact, there is no space between them, and no light-diffusing liquid exists between them. In this state, the first and second parts merge into one, forming a single component with a specific light-transmitting function, without affecting the normal shooting function of the camera module.

[0052] In another alternative configuration, similar to the aforementioned configuration, the first portion is connected to the drive member 1013. When the camera module 100 is in foreign object detection mode, the drive member 1013 provides a force from the second portion toward the first portion, causing the first portion to move away from the second portion, so that the first and second portions move away from each other. When the camera module 100 is not in foreign object detection mode, the drive member 1013 provides a force from the first portion toward the second portion, causing the first portion to move toward the second portion, so that the first and second portions come into contact.

[0053] In this embodiment, when the camera module is in foreign object detection mode, the driving component can control the first and second parts to move away from each other, so that the homogenizing liquid is distributed between the first and second parts. The homogenizing liquid allows light entering it to undergo multiple scattering processes, resulting in output light with relatively uniform brightness. At this time, the homogenizing liquid distributed between the first and second parts resembles a uniformly emitting whiteboard. Therefore, when using the camera module in foreign object detection mode to take pictures for lens foreign object detection, the brightness uniformity requirement of the shooting scene is reduced. This allows the lens foreign object detection processing of smartphones with this camera module to no longer be limited by a whiteboard with high brightness uniformity requirements, ensuring real-time black spot detection on smartphones. Furthermore, because the brightness uniformity requirement of the shooting scene is reduced when the camera module performs lens foreign object detection under this technical solution, the impact of the brightness uniformity of the shooting scene on the lens foreign object detection results is also reduced, improving the accuracy of the lens foreign object detection results.

[0054] Alternatively, please refer to Figure 2 The present application provides a schematic diagram of the structure of a transparent component in foreign object detection operation. Figure 2 As shown, the transparent component 1011 may include: a thin film 10113 and a first light-transmitting sheet 10111 and a second light-transmitting sheet 10112 disposed opposite to each other. The first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 are connected by the thin film 10113. The first light-transmitting sheet 10111, the second light-transmitting sheet 10112, and the thin film 10113 constitute a sealed cavity. Figure 3As shown, the first portion of the first light-transmitting sheet 10111 has a protruding structure facing the second light-transmitting sheet 10112 on its light-transmitting area α, and the second portion of the second light-transmitting sheet 10112 has a protruding structure facing the first light-transmitting sheet 10111 on its light-transmitting area α. Optionally, the first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 can be glass sheets with light-transmitting areas. The first light-transmitting sheet is also called the upper glass sheet. The second light-transmitting sheet is also called the lower glass sheet. The lens protection assembly is also called camera protective glass lenses (CG). For example, the first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 can be transparent glass sheets. In this case, the entire first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 belong to the light-transmitting area.

[0055] Please continue to refer to this. Figure 2 With the first and second parts far apart, the first light-transmitting sheet 10111, the second light-transmitting sheet 10112, and the thin film 10113 constitute a cavity β. The homogenizing liquid 1012 is distributed within this cavity β. Please refer to [reference needed]. Figure 4 This illustrates a structural schematic diagram of a transparent component provided in this application that is not in a foreign object detection working state. Figure 4 As shown, when the first part and the second part abut, that is, when the convex surfaces of the protruding structures of the first part and the second part abut, the thin film 10113 protrudes in a direction away from the light-transmitting area. The first light-transmitting sheet 10111, the second light-transmitting sheet 10112, and the protruding thin film 10113 constitute a convex cavity γ. The homogenizing liquid 1012 is distributed within the convex cavity γ.

[0056] Optionally, the film 10113 can be a flexible film with a certain elastic deformation capability. When the first part and the second part are in contact, the homogenizing liquid 1012 is subjected to the pressure of the first part and the second part, squeezing the film 10113, causing the film 10113 to bulge away from the light-transmitting area. After the first part and the second part begin to move away from each other under the control of the driving member, a space is formed between the first part and the second part, and the homogenizing liquid 1012 flows into this space, reducing the squeezing of the film 10113, so that the bulge of the film 10113 away from the light-transmitting area gradually decreases.

[0057] Further optionally, the first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 also include a non-transparent region δ. The non-transparent region δ is located on at least one side of the light-transmitting region α. ​​In one optional case, such as Figure 5 As shown ，The non-transparent region δ is located on one side of the transparent region α. ​​The first transparent sheet 10111 has a protruding structure on its transparent region α facing the second transparent sheet 10112, and the second transparent sheet 10112 has a protruding structure on its transparent region α facing the first transparent sheet 10111. When the protruding structures of the first transparent sheet 10111 and the second transparent sheet 10112 are far apart, such as... Figure 6 As shown, the first light-transmitting sheet 10111, the second light-transmitting sheet 10112, and the thin film 10113 constitute a cavity β. When the protruding structures of the first light-transmitting sheet 10111 and the second light-transmitting sheet 10112 abut against each other, as... Figure 7 As shown, the portions of the first transparent sheet 10111 and the second transparent sheet 10112 located in the non-transparent region δ, together with the raised film 10113, form a convex cavity γ. The homogenizing liquid 1012 is distributed within this convex cavity γ. Based on this, the non-transparent region δ is also called the liquid storage region.

[0058] For example, such as Figure 3 As shown, the non-transparent region δ surrounds the transparent region α. ​​In an alternative configuration, when the protruding structures of the first transparent sheet 10111 and the second transparent sheet 10112 abut against each other, as... Figure 4 As shown, the portions of the first transparent sheet 10111 and the second transparent sheet 10112 located in the non-transparent region δ, together with the thin film 10113, form a convex cavity γ surrounding the raised structure. The homogenizing liquid 1012 is distributed within the two cavities γ. Based on this, the non-transparent region δ is also called the liquid storage region.

[0059] In some embodiments of this application, the transparent component 1011 located in the non-transparent area on the first light-transmitting sheet 10111 and / or the second light-transmitting sheet 10112 is connected to the driving component 1013. This avoids the driving component blocking the light incident on the lens, thus affecting the imaging effect of the camera module.

[0060] The number of driving components 1013 can be one or more. When there are multiple driving components 1013, the connection positions between the first part and / or the second part and the multiple driving components 1013 can be distributed along the circumferential direction of the first part. Specifically, the connection positions between the first part and / or the second part and the multiple driving components 1013 can be evenly distributed along the circumferential direction of the first part. In this way, when the driving component controls the first part and the second part to move away from or abut against each other, it provides a relatively uniform force to each position of the first part and / or the second part connected to it, that is, the first part and / or the second part connected to the driving component are subjected to uniform force, ensuring the stability of the first part and / or the second part during the movement process.

[0061] Optionally, the connection positions of the first part and / or the second part with the plurality of driving members 1013 can be uniformly distributed along the circumferential direction y of the protruding structure. For example, as shown... Figure 8 As shown, taking the connection between the driving component 1013 and the second light-transmitting sheet 10112 as an example, the second light-transmitting sheet 10112 is square in shape. The driving component 1013 is connected to the four corners of the second light-transmitting sheet 10112.

[0062] Further optionally, the drive unit 1013 can be a drive unit employing a voice coil motor (VCM) or a shape memory alloy (SMA). Taking a VCM as an example, for instance... Figure 9 As shown, the drive unit 1013 may include a magnet 10131, an iron core 10132, and a coil 10133 surrounding the iron core 10132.

[0063] The following explanation takes the connection between the driving component 1013 and the second light-transmitting sheet 10112 as an example. In one optional configuration, such as... Figure 9 and Figure 10 As shown, magnet 10131 is connected to the second light-transmitting sheet 10112, and iron core 10132 is connected to the housing of camera module 100. When coil 10133 is energized, it drives the magnet to move, thereby moving the second light-transmitting sheet 10112 connected to the magnet. In another alternative configuration, iron core 10132 is connected to the second light-transmitting sheet 10112, and magnet 10131 is connected to the housing of camera module 100. When coil 10133 is energized, it drives the iron core 10132 to move, thereby moving the second light-transmitting sheet 10112 connected to iron core 10132. It is easy to understand that when driving member 1013 is connected to the first light-transmitting sheet 10111, it is also possible that magnet 10131 of driving member 1013 is connected to the first light-transmitting sheet 10111, or that iron core 10132 of driving member 1013 is connected to the first light-transmitting sheet 10111.

[0064] For example, consider a case where magnet 10131 is connected to the second light-transmitting sheet 10112, and iron core 10132 is connected to the housing of camera module 100. When the camera module is in foreign object detection mode, energizing coil 10133 causes the magnet to move away from the first light-transmitting sheet 10111, which in turn causes the second light-transmitting sheet 10112 to move away from the first light-transmitting sheet 10111, causing the raised surfaces of the raised structures of the first and second light-transmitting sheets 10111 to move away from each other. When the camera module is not in foreign object detection mode, energizing coil 10133 causes the magnet to move closer to the first light-transmitting sheet 10111, which in turn causes the second light-transmitting sheet 10112 to move closer to the first light-transmitting sheet 10111, causing the raised surfaces of the raised structures of the first and second light-transmitting sheets 10111 to abut.

[0065] In some embodiments of this application, such as Figure 11 As shown, the lens protection assembly 101 may further include an elastic element 1014. The number of elastic elements 1014 may be one or more.

[0066] In an alternative configuration, one end of the elastic member 1014 is connected to the first part, and the other end of the elastic member 1014 is connected to the housing of the camera module. The elastic member 1014 provides a force from the first part to the second part to the first part connected thereto, such that the first part and the second part abut against each other when the camera module is not in the foreign object detection working state.

[0067] In another alternative configuration, one end of the elastic member 1014 is connected to the second part, and the other end is connected to the housing of the camera module. The elastic member 1014 provides a force from the second part to the first part to the second part, so that when the camera module is not in foreign object detection mode, the first and second parts abut against each other. For example, if both the driving member 1013 and the elastic member 1014 are connected to the second transparent component 10112, when the camera module is not in foreign object detection mode, the driving member 1013 can stop providing driving force, allowing the second transparent component 10112 to move towards and abut against the first transparent component 10111 under the force provided by the elastic member 1014. Compared to the method where the driving member 1013 drives the second transparent component 10112 towards and abuts against the first transparent component 10111, the power consumption of the driving member 1013 is reduced. For example, when the camera module is not in the foreign object detection working state, the coil of the driving component 1013 can be de-energized so that the second transparent component 10112 abuts against the first transparent component 10111 under the force provided by the elastic component 1014.

[0068] Optionally, one end of the elastic member 1014 is connected to the non-transparent area of ​​the first light-transmitting sheet 10111 and / or the second light-transmitting sheet 10112. This prevents the elastic member from blocking the light incident on the lens and affecting the imaging effect of the camera module. For example, when there are multiple elastic members 1014, the connection positions of the first part and / or the second part with the multiple elastic members 1014 can be distributed along the circumferential direction of the first part. Specifically, for example, the connection positions of the first part and / or the second part with the multiple elastic members 1014 can be evenly distributed along the circumferential direction of the first part. In this way, during the process of controlling the first part and the second part to abut, the elastic member provides a more uniform force to each position of the first part and / or the second part connected to it, that is, the first part and / or the second part connected to the elastic member are subjected to uniform force, ensuring the stability of the first part and / or the second part during the movement process.

[0069] Further optionally, the connection positions of the first part and / or the second part with the plurality of elastic members 1014 can be uniformly distributed along the circumferential direction y of the protruding structure. For example, as... Figure 8 As shown, taking the connection between the elastic element 1014 and the second light-transmitting sheet 10112 as an example, the second light-transmitting sheet 10112 is square in shape. The elastic element 1014 is connected to the midpoint of two sides of the second light-transmitting sheet 10112.

[0070] In summary, the camera module provided in this application includes a lens protection assembly and a lens. The lens protection assembly is located on the light-emitting side of the lens and includes a transparent component, a light-diffusing liquid, and a driving component. The transparent component includes a first part and a second part disposed opposite to each other, and both the first and second parts have light-transmitting areas. The light-transmitting areas at least partially overlap with the light-emitting area of ​​the lens, and the first and second parts are relatively movable. The light-diffusing liquid is located within the cavity formed by the first and second parts, and the first and / or second parts are connected to the driving component. In this technical solution, when the camera module is in foreign object detection mode, the driving component can control the first and second parts to move away from each other, so that the light-diffusing liquid is distributed between the first and second parts. The light-diffusing liquid allows light entering its interior to undergo multiple scatterings, resulting in output light with relatively uniform brightness. At this time, the light-diffusing liquid distributed between the first and second parts resembles a uniformly emitting whiteboard. Therefore, when using a camera module in foreign object detection mode to take pictures for lens foreign object detection, the requirement for brightness uniformity of the shooting scene is reduced. This means that the lens foreign object detection processing of smartphones equipped with this camera module is no longer limited by white boards with high brightness uniformity requirements, ensuring real-time detection of black spots on smartphones. Furthermore, because the camera module in this technical solution has lower requirements for brightness uniformity of the shooting scene when performing lens foreign object detection, the impact of the brightness uniformity of the shooting scene on the lens foreign object detection results is also reduced, improving the accuracy of the lens foreign object detection results.

[0071] Please refer to Figure 12 This document illustrates a flowchart of a lens foreign object detection method provided in an embodiment of this application. The lens foreign object detection method is applied to an electronic device, which includes a camera module as provided in an embodiment of this application. Optionally, the electronic device includes, for example,... Figures 1 to 11 Any of the aforementioned camera modules. For example, the lens foreign object detection method is executed by the processor of an electronic device. The electronic device can be a terminal, computer, or wearable device, etc. Figure 12 As shown, the lens foreign object detection method includes:

[0072] Step 1201: Receive the trigger input for foreign object detection.

[0073] In this embodiment, the trigger input is used to trigger the electronic device to perform lens foreign object detection processing, i.e., black spot detection. Optionally, the trigger input can be in the form of clicking, long-pressing, swiping, or voice input to the foreign object detection icon. For example, if a user wants to perform black spot detection, they can click the foreign object detection icon displayed on the electronic device to make the electronic device receive the trigger input for foreign object detection.

[0074] Step 1202: In response to the trigger input, control the first part and the second part to move away from each other via the drive.

[0075] Optionally, when the driving element is an electronically controlled device, the electronic device can control the driving element to power on in response to a trigger input, so that the driving element controls the first and second parts of the camera module to move away from each other. For example, the driving element is a VCM. The electronic device can control the coil of the VCM to power on in response to a trigger input, so that the magnet moves, causing the second light-transmitting sheet connected to the magnet to move, thus controlling the first and second light-transmitting sheets to move away from each other.

[0076] Step 1203: With the homogenizing liquid distributed between the first part and the second part, acquire the target image captured by the camera module.

[0077] In this embodiment, the driving component controls the first and second parts to move away from each other, causing the light-diffusing liquid to distribute between the first and second parts, thereby controlling the camera module to capture the target image. Optionally, the user controls the camera module to point the lens at objects with relatively uniform brightness, such as the sky or ceiling, to capture the target image.

[0078] Step 1204: Detect abnormally dark or bright areas in the target image and obtain the detection results. The detection results are used to indicate whether there are foreign objects inside the camera module.

[0079] In this embodiment, the abnormally dark brightness region, also known as the black patch region, refers to an area in the captured image whose brightness is significantly lower than other areas. Optionally, the abnormally dark brightness region refers to an area in the captured image whose brightness is lower than a target brightness threshold. The target brightness threshold can be the average or mode of the brightness of each pixel in the captured image. Where there are no abnormally dark brightness regions in the target image, i.e., no black patches, the light is uniform after passing through the light-diffusing liquid. Therefore, the brightness of the entire image captured by the camera module is relatively uniform, for example... Figure 13 The image shown illustrates this. When there are abnormally dark areas in the target image, i.e., when there are black patches, the image captured by the camera module will have noticeably small areas of lower brightness, for example... Figure 14 The image shown.

[0080] In one optional implementation, the electronic device can input the target image into an abnormally dark / bright area detection model to detect abnormally dark / bright areas in the target image and obtain a detection result. The abnormally dark / bright area detection model is used to detect whether abnormally dark / bright areas exist in the target image. The detection result indicates whether abnormally dark / bright areas exist in the target image. If the detection result indicates the presence of abnormally dark / bright areas in the target image, the detection result indicates the presence of foreign objects within the camera module. If the detection result indicates the absence of abnormally dark / bright areas in the target image, the detection result indicates the absence of foreign objects within the camera module.

[0081] In another alternative implementation, the electronic device performs abnormally dark or bright areas detection on the target screen, and the process of obtaining the detection result may include the following steps 12041 to 12043.

[0082] In step 12041, abnormal dark and bright areas are detected in the target image.

[0083] In this embodiment, the electronic device detects abnormally dark or bright areas in a target image and obtains a detection result. The detection result can be a first detection result or a second detection result. The second detection result indicates that there are no abnormally dark or bright areas in the target image. The first detection result indicates that there are abnormally dark or bright areas in the target image. Specifically, the first detection result includes: the brightness value corresponding to the non-dark areas in the target image, the brightness value corresponding to the dark areas, and the location of the dark areas.

[0084] The non-dark brightness areas, also known as white, unaffected areas, can have their brightness values ​​include at least one of the following: the brightness value of each pixel in the non-dark brightness area, the average pixel brightness value, and the mode of pixel brightness. The dark brightness areas, also known as black patch affected areas, can have their brightness values ​​include at least one of the following: the brightness value of each pixel in the dark brightness area, the average pixel brightness value, and the mode of pixel brightness.

[0085] Optionally, the electronic device can input the target image into the abnormal dark / brightness region detection model and output the detection results. The abnormal dark / brightness region detection model is used to detect whether there are abnormal dark / brightness regions in the target image, and outputs the brightness values ​​corresponding to the non-dark / brightness regions, the brightness values ​​corresponding to the dark / brightness regions, and the positions of the dark / brightness regions in the target image. The detection results can be either a first detection result or a second detection result.

[0086] In step 12042, if it is determined that there are dark and light areas in the target image, the first detection result is output.

[0087] Optionally, the electronic device can output and display the first detection result to remind the user that the camera module of the electronic device has a black spot problem. In one optional implementation, after outputting the first detection result, the electronic device can also display a maintenance prompt message. The maintenance prompt message is used to remind the user that the current electronic device has a camera black spot problem and reminds the user that the camera module needs to be replaced. In another optional case, after outputting the first detection result, the electronic device can also perform black spot compensation processing based on the first detection result to repair the black spot phenomenon in the image captured by the electronic device and improve the shooting effect. The black spot compensation processing is described in detail below. After outputting the first detection result in step 12042, the lens foreign object detection method further includes the following steps S1 to S2.

[0088] In step S1, the image captured by the camera module is obtained.

[0089] After each shot is taken by the camera module, the electronic device acquires the captured image and performs black spot compensation processing on each captured image.

[0090] In step S2, when the first detection result is output, the image is subjected to brightness compensation processing based on the brightness value corresponding to the non-dark brightness area, the brightness value corresponding to the dark brightness area, and the position of the dark brightness area, so as to obtain and output the processed image.

[0091] Optionally, the electronic device can determine the brightness difference information between the non-dark and dark brightness areas based on the brightness values ​​corresponding to the non-dark brightness areas and the dark brightness areas. The electronic device then quantitatively calculates a brightness compensation amount based on this brightness difference information. Based on the brightness compensation amount, the electronic device performs brightness compensation processing on the pixels at the locations of the dark brightness areas in the image, obtaining and outputting the processed image.

[0092] For example, the brightness value corresponding to a non-dark brightness area is the first pixel average brightness value of each pixel in that area, and the brightness value corresponding to a dark brightness area is the second pixel average brightness value of each pixel in that area. The electronic device calculates the difference between the first and second pixel average brightness values ​​to obtain a brightness compensation amount. The electronic device then calculates the sum of the brightness value and the brightness compensation amount for each pixel at the location of the dark brightness area in the image, obtaining the target brightness value for each pixel at that location. Finally, the brightness value of each pixel at the location of the dark brightness area in the image is updated to the target brightness value corresponding to that pixel, resulting in and outputting the processed image.

[0093] In step 12043, if it is determined that there are no dark or light areas in the target image, a second detection result is output.

[0094] Optionally, the electronic device can output and display a second detection result to remind the user that the camera module of the electronic device does not have a black spot problem.

[0095] In summary, the lens foreign object detection method provided in this application, after receiving the trigger input for foreign object detection, controls the first part and the second part to move away from each other through the driving component, so that when the light-diffusing liquid is distributed between the first part and the second part, the target image captured by the camera module is acquired, and the abnormal dark brightness area of ​​the target image is detected to obtain the detection result, thereby realizing the detection and processing of foreign objects in the mobile phone lens of the electronic device, so as to realize the real-time detection of black spots in the electronic device.

[0096] The lens foreign object detection method provided in this application can be executed by a lens foreign object detection device. This application uses the lens foreign object detection device executing the lens foreign object detection method as an example to illustrate the lens foreign object detection device provided in this application.

[0097] Please refer to Figure 15 This diagram illustrates a block diagram of a lens foreign object detection device according to an embodiment of this application. The lens foreign object detection device is applied to an electronic device, which includes the camera module provided in this embodiment. Optionally, the electronic device includes, for example,... Figures 1 to 11 Any of the aforementioned camera modules. For example, the lens foreign object detection method is executed by the processor of an electronic device. The electronic device can be a terminal, computer, or wearable device, etc. Figure 15 As shown, the lens foreign object detection device 1500 includes: a receiving module 1501, a control module 1502, an acquisition module 1503, and a detection module 1504.

[0098] The receiving module 1501 is used to receive the trigger input for foreign object detection;

[0099] Control module 1502 is used to control the first part and the second part to move away from each other via a drive element in response to a trigger input;

[0100] The acquisition module 1503 is used to acquire the target image captured by the camera module when the homogenizing liquid is distributed between the first part and the second part.

[0101] The detection module 1504 is used to detect abnormally dark or bright areas in the target image and obtain detection results. The detection results are used to indicate whether there are foreign objects inside the camera module.

[0102] Optionally, the detection module 1504 is also used for:

[0103] Detect abnormally dark or bright areas in the target image;

[0104] If the detection determines that there are dark and bright areas in the target image, the first detection result is output. The first detection result includes: the brightness value corresponding to the non-dark and bright areas in the target image, the brightness value corresponding to the dark and bright areas, and the position of the dark and bright areas.

[0105] If the detection determines that there are no dark or light areas in the target image, output the second detection result;

[0106] The acquisition module 1503 is also used to acquire images captured by the camera module;

[0107] The lens foreign object detection device 1500 may further include: a compensation module, which, when outputting the first detection result, performs brightness compensation processing on the image based on the brightness value corresponding to the non-dark brightness area, the brightness value corresponding to the dark brightness area, and the position of the dark brightness area, to obtain and output the processed image.

[0108] In summary, the lens foreign object detection device provided in this application embodiment, after receiving the trigger input for foreign object detection, controls the first part and the second part to move away from each other through the driving component, so that when the light-diffusing liquid is distributed between the first part and the second part, the target image captured by the camera module is acquired, and the abnormal dark brightness area of ​​the target image is detected to obtain the detection result, thereby realizing the detection and processing of foreign objects in the mobile phone lens of the electronic device, so as to realize the real-time detection of black spots in the electronic device.

[0109] The lens foreign object detection device in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific type of device.

[0110] The lens foreign object detection device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit it.

[0111] The lens foreign object detection device provided in this application embodiment can achieve... Figure 12 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0112] Optionally, embodiments of this application also provide an electronic device. This electronic device includes the camera module provided in embodiments of this application. Optionally, the electronic device may include, for example... Figures 1 to 11 Any of the aforementioned camera modules.

[0113] Optionally, such as Figure 16 As shown, this application embodiment also provides an electronic device 1600, including a processor 1601 and a memory 1602. The memory 1602 stores a program or instructions that can run on the processor 1601. When the program or instructions are executed by the processor 1601, they implement the various steps of the above-described lens foreign object detection method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0114] The electronic device 1600 also includes the camera module provided in the embodiments of this application. Optionally, the electronic device may include, for example... Figures 1 to 11 Any of the aforementioned camera modules.

[0115] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0116] Figure 17 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application. The electronic device 1700 includes, but is not limited to, components such as: a radio frequency unit 1701, a network module 1702, an audio output unit 1703, an input unit 17014, a sensor 1705, a display unit 1706, a user input unit 1707, an interface unit 1708, a memory 1709, and a processor 1710. The electronic device includes the camera module provided in this embodiment. Optionally, the electronic device may include, for example... Figures 1 to 11 Any of the aforementioned camera modules.

[0117] Those skilled in the art will understand that the electronic device 1700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 17The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0118] The user input unit 1707 is used to receive trigger input for foreign object detection.

[0119] Processor 1710 is configured to, in response to the trigger input, control the first portion and the second portion to move away from each other via the driver;

[0120] The processor 1710 is also configured to acquire the target image captured by the camera module when the light-diffusing liquid is distributed between the first part and the second part;

[0121] The processor 1710 is also used to detect abnormally dark or bright areas in the target image and obtain a detection result, which is used to indicate whether there are foreign objects in the camera module.

[0122] In this embodiment of the application, after receiving the trigger input for foreign object detection, the first part and the second part are controlled to move away from each other by the driving component, so that when the light-monopolating liquid is distributed between the first part and the second part, the target image captured by the camera module is obtained, and the abnormal dark brightness area of ​​the target image is detected to obtain the detection result, thereby realizing the detection and processing of foreign objects in the mobile phone lens of the electronic device, so as to realize the real-time detection of black spots in the electronic device.

[0123] Optionally, the processor 1710 is also used for:

[0124] Perform abnormally dark / bright areas detection on the target image;

[0125] If the target image is determined to have dark and bright areas, a first detection result is output. The first detection result includes: the brightness value corresponding to the non-dark and bright areas in the target image, the brightness value corresponding to the dark and bright areas, and the position of the dark and bright areas.

[0126] If the detection determines that the target image does not contain the dark / bright area, a second detection result is output;

[0127] Acquire the images captured by the camera module;

[0128] When the first detection result is output, the image is subjected to brightness compensation processing based on the brightness value corresponding to the non-dark brightness area, the brightness value corresponding to the dark brightness area, and the position of the dark brightness area, so as to obtain and output the processed image.

[0129] In this embodiment of the application, after receiving the trigger input for foreign object detection, the first part and the second part are controlled to move away from each other by the driving component, so that when the light-monopolating liquid is distributed between the first part and the second part, the target image captured by the camera module is obtained, and the abnormal dark brightness area of ​​the target image is detected to obtain the detection result, thereby realizing the detection and processing of foreign objects in the mobile phone lens of the electronic device, so as to realize the real-time detection of black spots in the electronic device.

[0130] It should be understood that, in this embodiment, the input unit 17014 may include a graphics processing unit (GPU) 170141 and a microphone 170142. The GPU 170141 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1706 may include a display panel 17061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1707 includes at least one of a touch panel 17071 and other input devices 17072. The touch panel 17071 is also called a touch screen. The touch panel 17071 may include a touch detection device and a touch controller. Other input devices 17072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0131] The memory 1709 can be used to store software programs and various data. The memory 1709 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1709 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1709 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0132] Processor 1710 may include one or more processing units; optionally, processor 1710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1710.

[0133] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described lens foreign object detection method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0134] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0135] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described lens foreign object detection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0136] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0137] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described lens foreign object detection method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0138] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0139] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0140] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A camera module, characterized in that, The camera module includes: A lens protection assembly and a lens, wherein the lens protection assembly is located on the light-emitting side of the lens, and the lens protection assembly includes: a transparent component, a light-diffusing liquid, and a driving component; The transparent component includes a first part and a second part disposed opposite to each other, and both the first part and the second part have light-transmitting areas. The light-transmitting areas at least partially overlap with the light-emitting area of ​​the lens. The first part and the second part are movable relative to each other. The light-diffusing liquid is located in the cavity formed by the first part and the second part. The first part and / or the second part are connected to the driving component. When the camera module is in the foreign object detection working state, the driving component controls the first part and the second part to move away from each other, and the light-diffusing liquid is distributed between the first part and the second part; When the camera module is not in the foreign object detection working state, the driving component controls the first part and the second part to abut.

2. The camera module according to claim 1, characterized in that, The transparent component includes: a thin film and a first light-transmitting sheet and a second light-transmitting sheet disposed opposite to each other. The first light-transmitting sheet and the second light-transmitting sheet are connected by the thin film. The first light-transmitting sheet, the second light-transmitting sheet and the thin film constitute a sealed cavity. The first part of the light-transmitting area of ​​the first light-transmitting sheet has a protrusion structure facing the second light-transmitting sheet, and the second part of the light-transmitting area of ​​the second light-transmitting sheet has a protrusion structure facing the first light-transmitting sheet. When the first part and the second part are far apart, the first light-transmitting sheet, the second light-transmitting sheet and the film constitute a cavity, and the light-monopolizing liquid is distributed in the cavity; When the first part and the second part are in contact, the film bulges out in a direction away from the light-transmitting area, and the first light-transmitting sheet, the second light-transmitting sheet and the bulging film form a convex cavity, in which the light-diffusing liquid is distributed.

3. The camera module according to claim 2, characterized in that, The first and second light-transmitting sheets also include non-light-transmitting areas, which surround the light-transmitting areas; The portion of the first and / or second light-transmitting sheet located in the non-light-transmitting area is connected to the driving component.

4. The camera module according to claim 1, characterized in that, The number of driving components is multiple, and the connection positions of the first part and / or the second part with the multiple driving components are distributed along the circumferential direction of the first part.

5. The camera module according to claim 1, characterized in that, The lens protection assembly also includes: an elastic element; One end of the elastic element is connected to the first part, and the other end of the elastic element is connected to the transparent component of the camera module. The elastic element is used to provide a force from the first part to the second part to the first part connected to it. Alternatively, one end of the elastic element is connected to the second part, and the other end of the elastic element is connected to the transparent component of the camera module. The elastic element is used to provide a force from the second part to the first part to the second part connected thereto, so that the first part and the second part abut against each other when the camera module is not in the foreign object detection working state.

6. An electronic device, characterized in that, The electronic device includes: the camera module according to any one of claims 1 to 5.

7. A method for detecting foreign objects in a lens, characterized in that, Applied to an electronic device, the electronic device including the camera module according to any one of claims 1 to 5, the method includes: Receive trigger input for foreign object detection; In response to the trigger input, the first part and the second part are controlled to move away from each other via the drive; With the light-diffusing liquid distributed between the first part and the second part, the target image captured by the camera module is obtained; The target image is subjected to abnormally dark or bright areas for detection, and the detection results are used to indicate whether there are foreign objects inside the camera module.

8. The method according to claim 7, characterized in that, The step of detecting abnormally dark or bright areas in the target image and obtaining the detection results includes: Perform abnormally dark / bright areas detection on the target image; If the target image is determined to have dark and bright areas, a first detection result is output. The first detection result includes: the brightness value corresponding to the non-dark and bright areas in the target image, the brightness value corresponding to the dark and bright areas, and the position of the dark and bright areas. If the detection determines that the target image does not contain the dark / bright area, a second detection result is output; The method further includes: Acquire the images captured by the camera module; When the first detection result is output, the image is subjected to brightness compensation processing based on the brightness value corresponding to the non-dark brightness area, the brightness value corresponding to the dark brightness area, and the position of the dark brightness area, so as to obtain and output the processed image.

9. A lens foreign object detection device, characterized in that, Applied to an electronic device, the electronic device including the camera module according to any one of claims 1 to 5, the device comprising: The receiving module is used to receive trigger inputs for foreign object detection; A control module is configured to, in response to the trigger input, control the first part and the second part to move away from each other via the drive element; The acquisition module is used to acquire the target image captured by the camera module when the light-diffusing liquid is distributed between the first part and the second part; The detection module is used to detect abnormally dark or bright areas in the target image and obtain detection results, which are used to indicate whether there are foreign objects inside the camera module.

10. An electronic device, characterized in that, The electronic device includes: a camera module as described in any one of claims 1 to 5, a processor, and a memory, wherein the memory stores a program or instructions that can run on the processor, and the program or instructions, when executed by the processor, implement the steps of the lens foreign object detection method as described in claim 7 or 8.

Images