Camera module and electronic device

Abstract

The application provides a camera module and an electronic device. The camera module comprises, in sequence along a main optical axis direction, an optical lens, a light adjusting assembly and an image sensor. The light adjusting assembly comprises a first light folding member, a second light folding member and a light blocking member. The first light folding member and the second light folding member are arranged at intervals. The first light folding member is located between the optical lens and the image sensor. Light transmitted from the optical lens is transmitted to the image sensor through the first light folding member and the second light folding member. The light blocking member is located between the first light folding member and the second light folding member. The light blocking member is used to block stray light transmitted from the optical lens between the first light folding member and the second light folding member. The camera module of the application is used to improve the imaging quality of the camera module.

Description

Technical Field

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

[0002] With the development of technology, electronic devices are integrating more and more functions, such as photography. Users have increasingly higher demands for photography, such as higher quality images and higher optical zoom. Existing technology increases the zoom ratio of camera modules by adding structural components to lengthen the optical path. However, adding structural components makes the camera module structure more complex, resulting in more stray light and affecting the image quality of the camera module. Summary of the Invention

[0003] This application provides a camera module to improve the imaging quality of the camera module.

[0004] This application also provides an electronic device.

[0005] The camera module described in this application includes an optical lens, a light adjustment component, and an image sensor arranged sequentially along the main optical axis. The light adjustment component includes a first refracting element, a second refracting element, and a light-blocking element. The first refracting element and the second refracting element are spaced apart. The first refracting element is located between the optical lens and the image sensor. Light transmitted from the optical lens is transmitted to the image sensor through the first refracting element and the second refracting element. The light-blocking element is located between the first refracting element and the second refracting element and is used to block stray light transmitted from the optical lens to the area between the first refracting element and the second refracting element.

[0006] It is understood that in the camera module, the light used for imaging is the imaging light, and the light not used for imaging is stray light. The presence of stray light affects the imaging quality of the camera module. After entering the optical lens, external light exits from the image side of the optical lens, is adjusted by the light adjustment assembly (i.e., adjusted by the first and second refractive elements), and finally transmitted to the image sensor for imaging. This light can be understood as the imaging light. A small portion of stray light passes through the gap between the first and second refractive elements in the light adjustment assembly and is transmitted to the image sensor for imaging. This stray light also affects the transmission of the imaging light when passing through the gap between the first and second refractive elements, affecting the imaging quality. Furthermore, some of this stray light is transmitted to the image sensor, affecting the imaging quality of the camera module.

[0007] The camera module described in this application, by setting the light-blocking element between the first and second refractive elements of the light adjustment assembly, blocks stray light transmitted from the optical lens to the area between the first and second refractive elements. This effectively prevents stray light from passing through the first and second refractive elements and thus avoids it from reaching the image sensor, thereby improving the imaging quality of the camera module.

[0008] In one embodiment, the first refracting element includes a first reflective surface, and the second refracting element includes a second reflective surface. The first reflective surface and the second reflective surface are disposed opposite to each other. Light transmitted from the optical lens is reflected sequentially through the first reflective surface and the second reflective surface. The light-blocking element includes a first light-blocking element disposed on the first reflective surface and extending towards the second reflective surface. By folding and focusing the light transmitted from the optical lens to the image sensor through the first reflective surface and the second reflective surface, the total optical length of the camera module is increased while maintaining a certain size of the camera module, thereby increasing the zoom ratio of the camera module and ensuring the telephoto capability of the camera module.

[0009] In one embodiment, the first light-blocking member includes a first segment and a second segment connected together. The first segment is connected to the first reflective surface, and the second segment is bent relative to the first segment toward the light incident side. By bending the first light-blocking member to block stray light with a large deflection angle, stray light with a large deflection angle is effectively prevented from passing between the first and second refractive elements and reaching the image sensor, thereby effectively improving the imaging quality of the camera module.

[0010] In one embodiment, the angle between the first segment and the second segment is 90 to 180 degrees. By limiting the angle between the first segment and the second segment to 90 to 180 degrees, stray light with a large deflection angle can be effectively blocked, preventing stray light with a large deflection angle from passing between the first refractive element and the second refractive element and reaching the image sensor, thereby improving the imaging quality of the camera module.

[0011] In one embodiment, the area of ​​the portion where the first light-blocking member connects to the first reflective surface is one-third or more of the total area of ​​the first light-blocking member. By limiting the area of ​​the portion where the first light-blocking member connects to the first reflective surface, the first light-blocking member is more securely fixed.

[0012] In one embodiment, the first reflective surface includes a first surface and a second surface, which are arranged at an angle. The second reflective surface includes a third surface and a fourth surface, which are also arranged at an angle. The first surface and the third surface are opposite to each other, as are the second surface and the fourth surface. Light transmitted from the optical lens is reflected sequentially from the first surface to the third surface, the fourth surface, and the second surface. The first light-blocking element is disposed on either the first surface or the second surface. In summary, the light transmitted from the optical lens is reflected by the first reflective surface to the second reflective surface, and then reflected again by the second reflective surface to the first reflective surface to complete the folding of the light, effectively improving the zoom ratio of the camera module while also facilitating the miniaturization of the camera module.

[0013] In one embodiment, the light-blocking component includes a second light-blocking component. The second light-blocking component is disposed on the surface of the second light-reflecting component facing the first light-reflecting component, extends towards the first light-reflecting component, and is offset from the first light-blocking component. That is, the second light-blocking component and the first light-blocking component are not directly opposite each other. By setting the second light-blocking component so that it cooperates with the first light-blocking component to block stray light, stray light can be blocked more effectively, ensuring the imaging effect of the camera module. By offsetting the first light-blocking component and the second light-blocking component, when the distance between the first light-reflecting component and the second light-reflecting component decreases, the first light-blocking component and the second light-blocking component will not touch, thus blocking stray light without affecting the movement between the first light-reflecting component and the second light-reflecting component.

[0014] In one embodiment, the sum of the distance from the first light-blocking element to the first light-refracting element and the distance from the second light-blocking element to the second light-refracting element is greater than or equal to the distance between the first light-refracting element and the second light-refracting element, so that stray light cannot pass through the gap between the first light-refracting element and the second light-refracting element, thus better ensuring the imaging effect of the camera module.

[0015] In one embodiment, the second refracting element includes a fifth surface connecting the third surface and the fourth surface, the fifth surface facing the first refracting element, and the second light-blocking element disposed on the fifth surface. That is, the second refracting element is a prism, and the second light-blocking element is disposed on the prism.

[0016] In one embodiment, the second light-blocking member is positioned at an angle to the fifth surface. This prevents the second light-blocking member from contacting and scratching the surface of the first light-blocking member during the focusing process when the first reflective surface moves in a direction perpendicular to the principal optical axis.

[0017] In one embodiment, the angle between the second light-blocking element and the fifth surface is 45 to 90 degrees. By limiting the angle between the second light-blocking element and the fifth surface to 45 to 90 degrees, the second light-blocking element is effectively prevented from contacting and scratching the surface of the first light-blocking element during the focusing process when the first reflective surface moves in a direction perpendicular to the principal optical axis. At the same time, it also ensures that the first and second light-blocking elements cooperate to effectively block stray light.

[0018] In one embodiment, the second light-blocking member includes a fixing part and a light-shielding part connected to each other. The fixing part is fixed to the fifth surface, and the light-shielding part is arranged at an angle to the fifth surface via the fixing part. That is, the fixing part is bent, while the light-shielding part is not bent. Of course, in other embodiments, the second light-blocking member is a one-piece structure, and the second light-blocking member is bent to be arranged at an angle to the fifth surface.

[0019] In one embodiment, the fifth surface includes an extinction area and a light-transmitting area. The extinction area blocks stray light, and the light-transmitting area allows light transmitted from the optical lens to pass through. The second light-blocking element is located in the extinction area. By providing an extinction area on the fifth surface, stray light is blocked from being reflected or transmitted through the extinction area, thereby improving the imaging quality of the camera module. Simultaneously, by placing the second light-blocking element in the extinction area, the propagation of the imaging light is prevented from being affected, ensuring the imaging quality of the camera module.

[0020] In one embodiment, the second refracting element includes a chamfered surface disposed opposite to the fifth surface. The dimension of the chamfered surface in the principal optical axis direction is smaller than the dimension of the fifth surface in the principal optical axis direction, to ensure that the chamfered surface does not affect the propagation of light. The chamfered surface is formed by cutting off the corner of the second refracting element facing away from the fifth surface. It is understood that cutting off a corner of the second refracting element will not affect the propagation of light. By cutting off the corner of the second refracting element facing away from the fifth surface, the volume of the second refracting element can be reduced, which is beneficial to the miniaturization of the camera module.

[0021] In one embodiment, the angle between the chamfered surface and the fifth surface is greater than 5 degrees. By limiting the angle between the chamfered surface and the fifth surface to greater than 5 degrees, it is possible to effectively prevent light incident on the second refractive element from being reflected by the chamfered surface and then exiting from the light-transmitting area.

[0022] The electronic device described in this application includes an image processor and the aforementioned camera module. The image processor is communicatively connected to the camera module. The camera module is used to acquire image data and input the image data into the image processor. The image processor is used to process the output image data. The electronic device including the aforementioned camera module has excellent imaging quality, and at the same time, the electronic device can achieve a thinner design.

[0023] The camera module described in this application, by setting a first light-blocking element between the first and second refracting elements of the light adjustment assembly, blocks stray light transmitted from the optical lens to the area between the first and second refracting elements. This effectively prevents stray light from passing through the first and second refracting elements and thus avoids it from reaching the image sensor, thereby improving the imaging quality of the camera module. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0025] Figure 1 This is a schematic diagram of the back of an electronic device according to one embodiment of this application;

[0026] Figure 2 yes Figure 1 A schematic diagram of the camera module of the electronic device shown;

[0027] Figure 3 This is a structural diagram of a camera module based on related technologies;

[0028] Figure 4 yes Figure 2 A schematic diagram of the light adjustment component of the camera module shown;

[0029] Figure 5 yes Figure 4 A schematic diagram of the structure of the second refracting element of the light adjustment assembly shown;

[0030] Figure 6 yes Figure 4 The diagram shows the structure of the light adjustment component when the camera module is shooting a distant scene.

[0031] Figure 7 yes Figure 4 The diagram shows the structure of the light adjustment component when the camera module is shooting close-up shots.

[0032] Figure 8This is a schematic diagram of the structure of the second embodiment of the camera module provided in this application;

[0033] Figure 9 yes Figure 8 A schematic diagram of the light adjustment component of the camera module shown;

[0034] Figure 10 This is a schematic diagram of the structure of the third embodiment of the camera module provided in this application;

[0035] Figure 11 yes Figure 10 A schematic diagram of the light adjustment component of the camera module shown;

[0036] Figure 12 This is a schematic diagram of the structure of the fourth embodiment of the camera module provided in this application;

[0037] Figure 13 yes Figure 12 A schematic diagram of the light adjustment component of the camera module shown. Detailed Implementation

[0038] The embodiments of this application are described below with reference to the accompanying drawings.

[0039] This application provides an electronic device, which is a mobile phone, tablet computer, laptop computer, camcorder, video recorder, camera, or other device with photographing or video recording functions. The terminal includes at least one optical lens, including a zoom lens, thereby enabling the terminal to achieve zoom shooting effects. Please refer to... Figure 1 , Figure 1 This is a schematic diagram of the back of an electronic device according to one embodiment of this application. In this embodiment, the electronic device 1000 is a mobile phone. This application describes the embodiment of the electronic device 1000 as a mobile phone.

[0040] Electronic device 1000 includes a camera module 100 and an image processor 200. The image processor 200 is communicatively connected to the camera module 100. The camera module 100 acquires image data and inputs it into the image processor 200, which then processes the output image data. The communication connection between the camera module 100 and the image processor 200 can include data transmission via electrical connections such as wiring, or via coupling. It is understood that the camera module 100 and the image processor 200 can also be connected through other methods capable of data transmission. The electronic device 1000, including the camera module 100, has excellent imaging quality and can also achieve a thin profile.

[0041] The image processor 200 optimizes digital image signals through a series of complex mathematical algorithms and then transmits the processed signals to the display. The image processor 200 can be a standalone image processing chip or a digital signal processing (DSP) chip. Its role is to transmit data obtained by the image sensor to the central processing unit (CPU) in a timely and rapid manner and refresh the image sensor. Therefore, the quality of the DSP chip directly affects image quality (such as color saturation and sharpness). The image processor 200 can also be integrated into other chips (such as a CPU chip).

[0042] Figure 1 In the illustrated embodiment, the camera module 100 is located on the back of the electronic device 1000 and serves as the rear camera of the electronic device 1000. It is understood that in some embodiments, the camera module 100 may also be located on the front of the electronic device 1000, serving as the front camera of the electronic device 1000. Both the front and rear cameras can be used for selfies or for the photographer to capture images of other objects.

[0043] In some embodiments, there are multiple camera modules 100, where "multiple" means two or more. Different camera modules 100 may have different functions to meet the needs of different shooting scenarios. For example, in some embodiments, the multiple camera modules 100 include zoom lens modules or fixed-focus lens modules to respectively achieve zoom shooting and fixed-focus shooting. Figure 1 In the illustrated embodiment, the electronic device 1000 has two rear cameras: a standard lens module and a zoom lens module. The standard lens module is used for everyday shooting, while the zoom lens module is used in scenarios requiring zoom shooting. In some embodiments, multiple different camera modules 100 can be communicatively connected to the image processor 200, allowing the image processor 200 to process the image data captured by each camera module 100.

[0044] It should be understood that Figure 1 The installation position of the camera module 100 in the illustrated embodiment of the electronic device 1000 is merely illustrative. In some other embodiments, the camera module 100 may also be installed in other locations on the phone, such as the upper center or upper right corner of the back of the phone. Alternatively, the camera module 100 may not be mounted on the main body of the phone, but on a component that is movable or rotatable relative to the phone, such as a component that can extend outward, retract, or rotate from the main body of the phone. This application does not impose any limitation on the installation position of the camera module 100.

[0045] Please see Figure 2 , Figure 2 yes Figure 1 The diagram shows the structure of the camera module 100 of the electronic device 1000. The camera module 100 includes an optical lens 10, a light adjustment component 20, and an image sensor 30 arranged sequentially along the main optical axis G. It can be understood that the main optical axis G is the direction of the main optical axis G of the optical lens 10. That is, the light adjustment component 20 and the image sensor 30 are both located on the image side of the optical lens 10 and are arranged sequentially along the main optical axis G of the optical lens 10. The light adjustment assembly 20 includes a first refracting element 21, a second refracting element 22, and a light blocking element 23. The first refracting element 21 and the second refracting element 22 are spaced apart and located between the optical lens 10 and the image sensor 30. Light transmitted from the optical lens 10 is transmitted to the image sensor 30 through the first refracting element 21 and the second refracting element 22. The light blocking element 23 is located between the first refracting element 21 and the second refracting element 22 and is used to block stray light transmitted from the optical lens 10 to the space between the first refracting element 21 and the second refracting element 22.

[0046] It is understandable that in the camera module 100, the light used for imaging is called imaging light P, and the light not used for imaging is called stray light L (such as...). Figure 3 The presence of stray light affects the imaging quality of the camera module 100. When external light enters the optical lens 10, it exits from the image side of the lens 10, is adjusted by the light adjustment assembly 20 (i.e., by the first refractive element 21 and the second refractive element 22), and finally reaches the image sensor 30 for imaging. This light can be understood as the imaging light P. A small portion of stray light L passes through the gap between the first refractive element 21 and the second refractive element 22 in the light adjustment assembly 20 and finally reaches the image sensor 30 for imaging. The stray light passing through the gap between the first refractive element 21 and the second refractive element 22 also affects the transmission of the imaging light, thus affecting the imaging quality. Furthermore, some stray light is transmitted to the image sensor 30, affecting the imaging quality of the camera module 100.

[0047] The camera module 100 provides a light-blocking member 23 between the first refracting element 21 and the second refracting element 22 of the light adjustment assembly 20. The light-blocking member 23 blocks stray light transmitted from the optical lens 10 to the first refracting element 21 and the second refracting element 22, effectively preventing stray light from passing through the first refracting element 21 and the second refracting element 22 and preventing stray light from being transmitted to the image sensor 30, thereby improving the imaging quality of the camera module 100.

[0048] In this embodiment, the optical lens 10 includes a first lens 11 and a second lens 12 arranged sequentially from the object side to the image side. Both the first lens 11 and the second lens 12 have positive refractive power. That is, both the first lens 11 and the second lens 12 are convex lenses. The convex lens can be any one of a biconvex lens, a plano-convex lens, or a convex-concave lens.

[0049] It should be noted that the surface of the incident light beam from the first lens 11 towards the subject is convex; it can be a biconvex lens, a plano-convex lens, or a convex-concave lens with a central portion thicker than its edge. The surface of the second lens 12 towards the subject is also convex; it can be a biconvex lens, a plano-convex lens, or a convex-concave lens with a central portion thinner than its edge. Figure 2 The following example illustrates the use of a first lens 11 as a plano-convex lens and a second lens 12 as a convex-concave lens. Of course, in other embodiments, the optical lens 1010 may also include multiple lenses, arranged sequentially from the object side to the image side.

[0050] The image sensor 30 is specifically a photosensitive chip. A photosensitive element is a semiconductor chip containing hundreds of thousands to millions of photodiodes on its surface. When illuminated by light, these photodiodes generate electrical charges, which are then converted into digital signals by an analog-to-digital converter (ADC) chip. A photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) device. A CCD is made using a highly sensitive semiconductor material that converts light into electrical charges, which are then converted into digital signals by the ADC chip. A CCD consists of many photosensitive units, typically measured in megapixels. When the CCD surface is illuminated, each photosensitive unit reflects a charge onto its component. The signals generated by all the photosensitive units are added together to form a complete image. CMOS primarily utilizes semiconductors made of silicon and germanium, allowing N-type (negatively charged) and P-type (positively charged) semiconductors to coexist on the CMOS. The current generated by these complementary effects can be recorded and interpreted by the processing chip as an image.

[0051] The camera module 100 also includes an infrared filter (not shown), located between the optical lens 10 and the image sensor 30. Light passing through the optical lens 10 illuminates the infrared filter and is transmitted to the image sensor 30 via the infrared filter. The infrared filter eliminates unwanted light projected onto the image sensor 30, preventing false colors or ripples from appearing on the image sensor 30, thereby improving its effective resolution and color reproduction. In some embodiments, the infrared filter may also be fixed to the image-side end of the optical lens 10. Other components included in the camera module 100 will not be described in detail here.

[0052] The camera module 100 also includes a driving component, which includes a first driving unit 51 and a second driving unit 52. The first driving unit 51 and the second driving unit 52 are respectively used to drive the light adjustment assembly 20 and related components of other components. Each of the first driving unit 51 and the second driving unit 52 includes one or more driving parts, capable of driving the light adjustment assembly 20 and related components of other components for focusing and / or optical image stabilization. When the first driving unit 51 drives the light adjustment assembly 20 for focusing, it drives the light adjustment assembly 20 to move along the principal optical axis G of the optical lens 10 to achieve focusing. When the first driving unit 51 drives the light adjustment assembly 20 for image stabilization, it drives the light adjustment assembly 20 to move or rotate relative to the image sensor 30, and / or drives the light adjustment assembly 20 to move or rotate relative to it to achieve optical image stabilization. The first driving unit 51 and the second driving unit 52 can be driving structures such as motors or electric motors.

[0053] like Figure 2 The camera module 100 also includes an image stabilization compensation component 60, which is positioned in front of the optical lens 10 along the principal optical axis G. Alternatively, the image stabilization compensation component 60 can be understood as being positioned between the object being photographed and the optical lens 10. The image stabilization compensation component 60 includes a third refractive element 61, which can be a reflector, specifically a front reflector. The second drive unit 52 is used to rotate the third refractive element 61 to compensate for shake in the light beam emitted from the object being photographed. Specifically, the second drive unit 52 can rotate the third refractive element 61 in a plane parallel to the principal optical axis G. For example, the second drive unit 52 can tilt the third refractive element 61 at a small angle to compensate for shake in the plane parallel to the principal optical axis G. Optionally, the reflector of the third refractive element 61 can be the same as or different from the reflector of the first refractive element 21. Optionally, the second drive unit 52 can also be an optical image stabilization motor, servo motor, or other drive device.

[0054] Of course, the camera module 100 may also include a shake detector and a processor, wherein the shake detector may be a gyroscope. Specifically, the shake detector may detect minute movements and transmit the signal to the processor, which calculates the required compensation amount and then controls the second drive unit 52 to adjust the position and angle of the third refractive element 61 based on the calculated compensation amount. Of course, in other embodiments, the camera module 100 does not include a shake stabilization compensation element 60, and the camera module 100 compensates for shake by driving the light adjustment component 20 to compensate for the light beam emitted from the object being photographed.

[0055] Please see Figure 2 and Figure 4 , Figure 4 yes Figure 2 The diagram shows the structure of the light adjustment component 20 of the camera module 100. The light adjustment component 20 is used to fold the light of the camera module 100, ensuring the miniaturization of the camera module 100 while increasing its zoom ratio. In this embodiment, the light adjustment component 20 folds the light path through the first refracting element 21 and the second refracting element 22. The first driving unit 51 focuses by driving the first refracting element 21 to move along a direction perpendicular to the principal optical axis G of the optical lens 10; that is, the first driving unit 51 focuses by driving the first refracting element 21 closer to or further away from the second refracting element 22. Specifically, the first refracting element 21 is a reflector, and the second refracting element 22 is a prism. Of course, in other embodiments, the first refracting element 21 is a reflector, and the second refracting element 22 is a reflector. Alternatively, the first refracting element 21 is a prism, and the second refracting element 22 is a prism. Alternatively, the first refracting element 21 is a prism, and the second refracting element 22 is a reflector. The light adjustment component 20 can also fold the light path through multiple refracting elements, and the arrangement structure of the multiple refracting elements can be designed according to the actual light path.

[0056] The first refracting element 21 includes a first reflecting surface 211, and the second refracting element 22 includes a second reflecting surface 221. The first reflecting surface 211 and the second reflecting surface 221 are arranged opposite to each other. The light transmitted from the optical lens 10 is reflected sequentially through the first reflecting surface 211 and the second reflecting surface 221. The light transmitted from the optical lens 10 to the image sensor 30 is folded and focused by the first reflecting surface 211 and the second reflecting surface 221, thereby increasing the total optical length of the camera module 100 while ensuring a certain size of the camera module 100, thereby increasing the zoom ratio of the camera module 100 and ensuring the telephoto capability of the camera module 100.

[0057] Specifically, the first reflective surface 211 includes a first surface 2111 and a second surface 2112, which are arranged at an angle. The first surface 2111 faces the optical lens 10. The second reflective surface 221 includes a third surface 2211 and a fourth surface 2212. The second refractive element 22 also includes a fifth surface 222 connected between the third surface 2211 and the fourth surface 2212. The third surface 2211 and the fourth surface 2212 are arranged at an angle. The first surface 2111 and the third surface 2211 are arranged opposite each other, and the second surface 2112 and the fourth surface 2212 are arranged opposite each other. The light transmitted from the optical lens 10 passes through the first reflective surface 2111, then through the fifth reflective surface 222 to the third reflective surface 2211. After being reflected by the third reflective surface 2211 and the fourth reflective surface 2212, the light is transmitted through the fifth reflective surface 222 to the second reflective surface 2112. In summary, the light transmitted from the optical lens 10 is reflected by the first reflective surface 211 to the second reflective surface 221, and then reflected by the second reflective surface 221 back to the first reflective surface 211 to complete the folding of the light. This effectively improves the zoom ratio of the camera module 100 and is conducive to the miniaturization of the camera module 100.

[0058] In this embodiment, the first surface 2111 and the second surface 2112 are arranged at right angles, as are the third surface 2211 and the fourth surface 2212. The first refracting element 21 is formed by two reflectors joined at an angle, with the first surface 2111 and the second surface 2112 serving as the reflecting surfaces of the two reflectors, respectively. The second refracting element 22 is a single triangular prism. Of course, in other embodiments, the angles between the first surface 2111 and the second surface 2112, and between the third surface 2211 and the fourth surface 2212, can be set according to actual needs. The first refracting element 21 is an integral angled reflector, or a triangular prism or a multi-prism. The second refracting element 22 can also be formed by two reflectors joined at an angle.

[0059] Please see Figure 5 , Figure 5 yes Figure 4The diagram shows the structure of the second refractive element 22 of the light adjustment assembly 20. The fifth surface 222 includes an ablation zone a and a light-transmitting zone b. The light-transmitting zone b allows light transmitted from the optical lens 10 to pass through. In this embodiment, there are two light-transmitting zones b: one is an incident light-transmitting zone, allowing light reflected from the first surface 2111 to pass through and be transmitted to the third surface 2211; the other is an outgoing light-transmitting zone, allowing light reflected from the fourth surface 2212 to pass through and be transmitted to the second surface 2112. The ablation zone a blocks stray light, preventing stray light reflected from the first refractive element 21 from entering the second refractive element 22, and preventing stray light reflected from inside the second refractive element 22 from passing through the second refractive element 22 and out to the first refractive element 21. By providing an ablation zone a on the fifth surface 222, stray light is blocked from being reflected or transmitted from the ablation zone a, thus improving the imaging quality of the camera module 100.

[0060] like Figure 4 The light-blocking component 23 includes a first light-blocking component 231 and a second light-blocking component 232. The first light-blocking component 231 is disposed on the first reflective surface 211 and extends toward the second reflective surface 221. Specifically, the first light-blocking component 231 is connected to the first surface 2111 of the first reflective surface 211 and is located near the second surface 2112 of the first surface 2111, and is fixed to the first surface 2111 by adhesive. The second light-blocking component 232 is disposed on the surface of the second refractive element 22 facing the first refractive element 21 and extends toward the first refractive element 21, and is offset from the first light-blocking component 231, that is, the second light-blocking component 232 and the first light-blocking component 231 are not directly opposite each other. Specifically, the second light-blocking component 232 is disposed on the fifth surface 222 and is located in the extinction zone a. By disposing of the second light-blocking component 232 in the extinction zone a, the propagation of the imaging light is avoided, thus ensuring the imaging quality of the camera module 100. Of course, in other embodiments, the first light-blocking member 231 is disposed on the second surface 2112, or the first light-blocking member 231 may also be disposed on both the first surface 2111 and the second surface 2112. Alternatively, the first light-blocking member 231 and the second light-blocking member 232 may also be disposed on other structures, such as on the component that fixes the first light-reflecting member 21 and the second light-reflecting member 22.

[0061] Meanwhile, by setting the first light-blocking element 231 and the second light-blocking element 232, the second light-blocking element 232 cooperates with the first light-blocking element 231 to block stray light, which can better block stray light and ensure the imaging effect of the camera module 100. By setting the first light-blocking element 231 and the second light-blocking element 232 in a staggered relative arrangement, when the first driving unit 51 drives the first refractive element 21 to reduce the distance between the first refractive element 21 and the second refractive element 22, the first light-blocking element 231 and the second light-blocking element 232 will not touch each other. Therefore, the first light-blocking element 231 and the second light-blocking element 232 can block stray light without affecting the movement between the first refractive element 21 and the second refractive element 22.

[0062] The first light-blocking element 231 is sheet-shaped, and the area of ​​the portion where the first light-blocking element 231 connects to the first surface 2111 of the first reflective surface 211 is one-third or more of the total area of ​​the first light-blocking element 231. By limiting the area of ​​the portion where the first light-blocking element 231 connects to the first reflective surface 211, the first light-blocking element 231 is fixed more securely.

[0063] In this embodiment, the first light-blocking element 231 is a Soma film, a type of PET polyester film. It is a black film with high light-blocking performance and no reflection. Because its thickness can be made thin, it balances thickness and light-absorbing properties. In other words, the Soma film is thin enough while still having excellent light-blocking performance, effectively blocking stray light and improving the imaging quality of the camera module 100. Of course, in other embodiments, the first light-blocking element 231 can also be a film made of other materials with light-absorbing properties, such as Mylar film, ordinary PC film, or foam.

[0064] like Figure 4 and Figure 5 The second light-blocking member 232 includes a fixing part 2321 and a light-shielding part 2322 connected to each other. The fixing part 2321 is fixed to the fifth surface 222, and the light-shielding part 2322 is fixed to the fifth surface 222 through the fixing part 2321. Specifically, the second light-blocking member 232 is arranged perpendicular to the fifth surface 222.

[0065] In this embodiment, the fixing part 2321 and the light-shielding part 2322 are made of different materials. The light-shielding part 2322 can be the same Soma sheet as the first light-blocking member 231, and the fixing part 2321 can be plastic. The fixing part 2321 and the light-shielding part 2322 are connected by snap-fit, adhesive, or other connection methods. The fixing part 2321 has light-shielding properties due to a matte finish treatment. Of course, in other embodiments, the light-shielding part 2322 can also be a film made of other materials with matte finish properties, such as Mylar sheet, ordinary PC film, or foam. The fixing part 2321 can be made of materials such as metal or rubber. The fixing part 2321 and the light-shielding part 2322 can also be made of the same material, and the fixing part 2321 and the light-shielding part 2322 can also be integrally formed by injection molding. Alternatively, the second light-blocking member 232 can also only have the light-shielding part 2322, which can be connected to the fifth surface 222 by snap-fit, adhesive, or other connection methods.

[0066] In this embodiment, the sum of the distance from the first light-blocking element 231 to the first light-refracting element 21 and the distance from the second light-blocking element 232 to the second light-refracting element 22 is greater than or equal to the distance between the first light-refracting element 21 and the second light-refracting element 22. It is understandable that... Figure 6 and Figure 7As shown, during the process of the camera module 100 switching from shooting a distant scene to shooting a close-up scene, the first driving unit 51 drives the first refracting element 21 to move relative to the second refracting element. During this zooming process, the lengths h1 and h2 of the overlapping portion of the first light blocking element 231 and the second light blocking element 232 in the direction perpendicular to the optical axis are both greater than zero. Of course, the lengths h1 and h2 of the overlapping portion of the first light blocking element 231 and the second light blocking element 232 in the direction perpendicular to the optical axis can also be equal to zero. As a result, stray light cannot pass through the gap between the first refracting element 21 and the second refracting element 22, thus better ensuring the imaging effect of the camera module 100.

[0067] Please see Figure 8 and Figure 9 , Figure 8 This is a structural schematic diagram of the second embodiment of the camera module 100 provided in this application. Figure 9 yes Figure 8 The diagram shows the structure of the light adjustment component 20 of the camera module 100. This embodiment is largely the same as the previous embodiment, except that the three corners of the second refracting element 22 are cut off and treated with a light-reducing process. It is understood that cutting off the three corners of the second refracting element 22 will not affect the propagation of light. Cutting off the three corners of the second refracting element 22 reduces its volume, which is beneficial for miniaturizing the camera module 100. The second refracting element 22 includes a chamfered surface 223 disposed opposite to the fifth surface 222. It is understood that the chamfered surface 223 is formed by cutting off the corners of the second refracting element 22 that are opposite to the fifth surface 222. In this embodiment, the dimension of the chamfered surface 223 in the direction of the principal optical axis G is smaller than the dimension of the fifth surface 222 in the direction of the principal optical axis G, to ensure that the chamfered surface 223 will not affect the propagation of light. The angle θ between the chamfered surface 223 and the fifth surface 222 is greater than 5 degrees. By limiting the angle θ between the chamfered surface 223 and the fifth surface 222 to greater than 5 degrees, it can effectively prevent the light incident on the second refracting element 22 from being reflected by the chamfered surface 223 and then exiting from the light-transmitting area, effectively avoiding stray light and improving the imaging quality of the camera module 100.

[0068] Of course, in other embodiments, the included angle θ between the chamfered face 223 and the fifth face 222 can also be less than or equal to 5 degrees. At least one of the three corners of the second refracting element 22 is cut off and treated to remove light, which can reduce the volume of the second refracting element 22 and is beneficial for miniaturization of the camera module 100. For example, the corner of the second refracting element 22 that is opposite to the fifth face 222 is cut off.

[0069] The second light-blocking element 232 includes a fixing part 2321 and a light-shielding part 2322 connected to each other. The fixing part 2321 is fixed to the fifth surface 222, and the light-shielding part 2322 is set at an angle to the fifth surface 222 via the fixing part 2321. That is, the fixing part 2321 is bent, while the light-shielding part 2322 is not bent. In this embodiment, the fixing part 2321 and the light-shielding part 2322 are made of different materials. The fixing part 2321 is a bent metal sheet, with one part fixed to the fifth surface 222 and the other part connected to the light-shielding part 2322. The two parts of the fixing part 2321 are set at an angle, and the size of this angle determines the size of the angle between the light-shielding part 2322 and the fifth surface 222. The light-shielding part 2322 can be the same Soma sheet as the first light-blocking element 231. Of course, in other embodiments, the light-shielding part 2322 can also be a film made of other materials with light-absorbing properties, such as Mylar film, ordinary PC film, or foam. The fixing part 2321 and the light-shielding part 2322 can be made of the same material. The second light-blocking member 232 is an integral structure and is bent to be set at an angle with the fifth surface 222.

[0070] Specifically, the included angle α between the second light-blocking element 232 and the fifth surface 222 is 45 to 90 degrees (inclusive). That is, the included angle between the two parts of the fixing part 2321 is 90 to 135 degrees. By limiting the included angle α between the second light-blocking element 232 and the fifth surface 222 to 45 to 90 degrees, during the focusing process when the first reflecting surface 211 moves in a direction perpendicular to the principal optical axis G, the second light-blocking element 232 avoids the first light-blocking element 231, effectively preventing the second light-blocking element 232 from contacting the surface of the first light-blocking element 231 and causing scratches. At the same time, it also ensures that the first light-blocking element 231 and the second light-blocking element 232 cooperate to effectively block stray light.

[0071] Please see Figure 10 and Figure 11 , Figure 10 This is a structural schematic diagram of the third embodiment of the camera module 100 provided in this application. Figure 11 yes Figure 10The diagram shows the structure of the light adjustment component 20 of the camera module 100. This embodiment is largely the same as the second embodiment, except that in this embodiment, the first light-blocking element 231 includes a first segment 2311 and a second segment 2312 connected together. The first segment 2311 and the second segment 2312 are an integral structure. The first segment 2311 is connected to the first surface 2111 of the first reflective surface 211. The second segment 2312 is bent relative to the first segment 2311 towards the light incident side; that is, the second segment 2312 is bent towards the second light-blocking element 232. The first light-blocking element 231 is made of rubber to facilitate its bent shape. Simultaneously, the rubber material has a certain degree of flexibility, preventing scratches or impacts that could damage the second light-reflecting element 22 during reliability testing or focusing of the camera module 100. By bending the first light-blocking element 231, the gap between the first light-blocking element 231 and the second light-blocking element 232 is reduced, thus blocking stray light with a large deflection angle. This effectively prevents stray light with a large deflection angle from passing through the space between the first refractive element 21 and the second refractive element 22 and reaching the image sensor 30, thereby effectively improving the imaging quality of the camera module 100. Of course, in other embodiments, the first light-blocking element 231 can also be made of metal or other materials, as long as the first light-blocking element 231 can be bent.

[0072] Specifically, the included angle β between the first segment 2311 and the second segment 2312 is 90 to 180 degrees (inclusive). By limiting the included angle β between the first segment 2311 and the second segment 2312 to 90 to 180 degrees, for example, limiting the included angle β to 135 degrees, stray light with a large deflection angle can be effectively blocked, preventing stray light with a large deflection angle from passing between the first refractive element 21 and the second refractive element 22 and reaching the image sensor 30, thereby improving the imaging quality of the camera module 100. Of course, in other embodiments, the included angle β between the first segment 2311 and the second segment 2312 can also be other degrees.

[0073] Please see Figure 12 and Figure 13 , Figure 12 This is a structural schematic diagram of the fourth embodiment of the camera module 100 provided in this application. Figure 13 yes Figure 12This is a schematic diagram of the structure of the light adjustment component 20 of the camera module 100. This embodiment is largely the same as the first embodiment, except that in this embodiment, both the first refracting element 21 and the second refracting element 22 are reflectors. The first refracting element 21 includes a first reflecting surface 211, and the second refracting element 22 includes a second reflecting surface 221. The first reflecting surface 211 and the second reflecting surface 221 are arranged opposite to each other. Specifically, the first reflecting surface 211 includes a first surface 2111 and a second surface 2112, which are arranged at an angle. The first surface 2111 faces the optical lens 10. The second reflecting surface 221 includes a third surface 2211 and a fourth surface 2212, which are arranged at an angle. The first surface 2111 and the third surface 2211 are arranged opposite to each other, and the second surface 2112 and the fourth surface 2212 are arranged opposite to each other. The light transmitted from the optical lens 10... Light is reflected sequentially from the first surface 2111 to the third surface 2211, the fourth surface 2212, and the second surface 2112, and finally transmitted from the second surface 2112 to the image sensor 30. In summary, the light transmitted by the optical lens 10 is reflected by the first reflective surface 211 to the second reflective surface 221, and then reflected by the second reflective surface 221 back to the first reflective surface 211 to complete the folding of the light, which effectively improves the zoom ratio of the camera module 100 and is conducive to the miniaturization of the camera module 100.

[0074] In this embodiment, the first surface 2111 and the second surface 2112 are arranged at right angles, as are the third surface 2211 and the fourth surface 2212. The first refracting element 21 is formed by two reflectors joined at an included angle, with the first surface 2111 and the second surface 2112 serving as the reflecting surfaces of the two reflectors, respectively. The second refracting element 22 is formed by two reflectors joined at an included angle, with the third surface 2211 and the fourth surface 2212 serving as the reflecting surfaces of the two reflectors, respectively. Of course, in other embodiments, the included angles between the first surface 2111 and the second surface 2112, and between the third surface 2211 and the fourth surface 2212, can be set according to actual needs. Both the first refracting element 21 and the second refracting element 22 are integral included angled reflectors. Both the first refracting element 21 and the second refracting element 22 can also be triangular prisms.

[0075] The light-blocking member 23 of this application may only include a first light-blocking member 231. The first light-blocking member 21 is provided with the first light-blocking member 231, while the second light-blocking member 22 is not provided with a light-blocking member. The first light-blocking member 231 is sheet-shaped, disposed on the first reflective surface 211 and extending towards the second reflective surface 221. Specifically, the first light-blocking member 231 is connected to the second surface 2112 of the first reflective surface 211 and is located on the second surface 2112 near the first surface 2111. Of course, in other embodiments, the first light-blocking member 231 is disposed on the first surface 2111, or the first light-blocking member 231 may also be disposed on both the first surface 2111 and the second surface 2112. The end of the first light-blocking member 231 facing away from the first light-blocking member 21 may also be bent towards the light incident side.

[0076] The area of ​​the portion where the first light-blocking element 231 connects to the second surface 2112 of the first reflective surface 211 is one-third or more of the total area of ​​the first light-blocking element 231. By limiting the area of ​​the portion where the first light-blocking element 231 connects to the first reflective surface 211, the first light-blocking element 231 can be firmly fixed to the first reflective surface 211, thereby making the first light-blocking element 231 more securely fixed.

[0077] In this embodiment, the first light-blocking element 231 is a Soma film, a type of PET polyester film. It is a black film with high light-blocking performance and no reflection. Because its thickness can be made thin, it balances thickness and light-absorbing properties. In other words, the Soma film is thin enough while still having excellent light-blocking performance, effectively blocking stray light and improving the imaging quality of the camera module 100. Of course, in other embodiments, the first light-blocking element 231 can also be a film made of other materials with light-absorbing properties, such as Mylar film, ordinary PC film, or foam.

[0078] The scope of protection in this application is not limited to the above embodiments one to four. Any combination of embodiments one to four is also within the scope of protection of this application. That is to say, the multiple embodiments described above can be arbitrarily combined according to actual needs.

[0079] The camera module 100 of this application provides a first light-blocking element 231 between the first refracting element 21 and the second refracting element 22 of the light adjustment assembly 20. The first light-blocking element 231 blocks stray light transmitted from the optical lens 10 to the first refracting element 21 and the second refracting element 22, which can effectively prevent stray light transmitted from the optical lens 10 to the first refracting element 21 and the second refracting element 22 from passing through the first refracting element 21 and the second refracting element 22, and prevent stray light from being transmitted to the image sensor 30, thereby improving the imaging quality of the camera module 100.

[0080] The above are merely some embodiments and implementation methods of this application. 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, characterized in that, The camera module includes an optical lens, a light adjustment assembly, and an image sensor arranged sequentially along the main optical axis. The optical lens includes at least two lenses, and the light adjustment assembly includes a first refracting element, a second refracting element, and a light-blocking element. The first refracting element and the second refracting element are spaced apart. The first refracting element is located between the optical lens and the image sensor. Light transmitted from the optical lens is transmitted to the image sensor through the first refracting element and the second refracting element. The light-blocking element is located between the first refracting element and the second refracting element and is used to block stray light transmitted from the optical lens to the area between the first refracting element and the second refracting element. The first refracting element includes a first reflective surface, and the second refracting element includes a second reflective surface. The first reflective surface and the second reflective surface are disposed opposite to each other. Light transmitted from the optical lens is reflected sequentially through the first reflective surface and the second reflective surface. The light blocking element includes a first light blocking element, which is disposed on the first reflective surface and extends toward the second reflective surface.

2. The camera module according to claim 1, characterized in that, The first light-blocking component includes a first segment and a second segment connected together. The first segment is connected to the first reflective surface, and the second segment is bent relative to the first segment toward the light incident side.

3. The camera module according to claim 2, characterized in that, The angle between the first segment and the second segment is 90 to 180 degrees.

4. The camera module according to claim 1 or 2, characterized in that, The area of ​​the portion where the first light-blocking element connects to the first reflective surface is more than 1 / 3 of the total area of ​​the first light-blocking element.

5. The camera module according to claim 2 or 3, characterized in that, The first reflective surface includes a first surface and a second surface, which are arranged at an angle. The second reflective surface includes a third surface and a fourth surface, which are arranged at an angle. The first surface and the third surface are opposite to each other, and the second surface and the fourth surface are opposite to each other. Light transmitted from the optical lens is reflected sequentially from the first surface to the third surface, the fourth surface and the second surface. The first light-blocking member is disposed on the first surface or on the second surface.

6. The camera module according to claim 5, characterized in that, The light-blocking component includes a second light-blocking component, which is disposed on the surface of the second light-reflecting component facing the first light-reflecting component, extends toward the first light-reflecting component, and is offset from the first light-blocking component.

7. The camera module according to claim 6, characterized in that, Along a direction perpendicular to the main optical axis, the length of the overlapping portion of the first light-blocking member and the second light-blocking member is greater than or equal to zero.

8. The camera module according to claim 7, characterized in that, The second light-reflecting element includes a fifth surface connecting the third surface and the fourth surface, the fifth surface facing the first light-reflecting element, and the second light-blocking element disposed on the fifth surface.

9. The camera module according to claim 8, characterized in that, The second light-blocking component is set at an angle to the fifth surface.

10. The camera module according to claim 9, characterized in that, The angle between the second light-blocking component and the fifth surface is 45 to 90 degrees.

11. The camera module according to claim 9, characterized in that, The second light-blocking component includes a fixing part and a light-shielding part that are connected to each other. The fixing part is fixed to the fifth surface, and the light-shielding part is arranged at an angle to the fifth surface through the fixing part.

12. The camera module according to any one of claims 8-11, characterized in that, The fifth surface includes an extinction zone and a light-transmitting zone. The extinction zone is used to block stray light, and the light-transmitting zone is used to allow light transmitted from the optical lens to pass through. The second light-blocking element is located in the extinction zone.

13. The camera module according to any one of claims 8-11, characterized in that, The second refracting element includes a chamfered surface disposed opposite to the fifth surface, wherein the dimension of the chamfered surface in the direction of the principal optical axis is smaller than the dimension of the fifth surface in the direction of the principal optical axis.

14. The camera module according to claim 13, characterized in that, The angle between the chamfered face and the fifth face is greater than 5 degrees.

15. An electronic device, characterized in that, The electronic device includes an image processor and a camera module as described in any one of claims 1-14, wherein the image processor is communicatively connected to the camera module, the camera module is used to acquire image data and input the image data into the image processor, and the image processor is used to process the image data output therefrom.

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