Camera module

Abstract

The utility model discloses a camera module, and the module comprises a lens assembly which comprises a lens barrel and a lens accommodated in the lens barrel, the lens barrel is provided with a first glue accommodating part, and the first glue accommodating part is annularly disposed at the peripheral side of the lens barrel in a direction perpendicular to an optical axis; the upper shell support is provided with a bearing surface, a containing cavity and a second glue containing part, the containing cavity is suitable for containing the lens barrel in the optical axis direction, the bearing surface is located on the inner surface of the upper shell support and annularly attached to the peripheral side of the lens barrel, and the second glue containing part is annularly arranged at the upper end of the bearing surface and faces the first glue containing part in the direction perpendicular to the optical axis; a glue accommodating space is formed between the first glue accommodating part and the second glue accommodating part; the first rubber material is filled in the rubber containing space, so that the lens assembly and the upper shell support are fixed, displacement or falling caused by looseness of the lens assembly is avoided, and the imaging effect of the camera module is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical technology, in particular to a camera module. BACKGROUND

[0002] At present, with the tide of automobile intelligence sweeping, the vehicle-mounted camera as the "eyes" of the automatic driving system is of great importance in stability and reliability. However, the existing vehicle-mounted camera generally adopts the way of fixing the lens by screw thread and nut cooperation. This traditional fixing method exposes many drawbacks in practical application. In northern China, the outdoor temperature in winter can reach-20℃ or even lower, while the temperature in the closed environment of the car in summer can soar above 35℃. Such significant temperature changes make the vehicle-mounted camera long-term in the harsh environment of high and low temperature alternation. Because the material such as metal used to make the screw thread has the characteristics of thermal expansion and contraction, the fitting gap between the screw threads will change constantly when the temperature changes repeatedly, and the lens will be prone to displacement or falling off over a long period of time. Once the lens position deviates, the image will be blurred, deformed, and the imaging clarity will be greatly reduced, which undoubtedly brings great challenges to the image recognition and analysis of the automatic driving system.

[0003] From the perspective of production and manufacturing, the machining precision of the screw thread structure is extremely high, and it needs to rely on high-precision machining equipment and exquisite technology to realize. In the actual production process, even the slightest machining error will lead to poor screw thread cooperation, resulting in a low product yield. In order to ensure a certain shipment volume, enterprises have to invest more raw materials, manpower and time cost for production and selection, which ultimately leads to high processing cost.

[0004] More seriously, the instability of the lens and the decline of the imaging quality may lead to misjudgment of the automatic driving system. For example, in complex road conditions, if the automatic driving system cannot accurately identify the road markings, traffic signal lights, and surrounding vehicles and pedestrians due to lens deviation, it is likely to make wrong decisions, such as incorrect judgment of the distance between vehicles leading to sudden braking or collision, which seriously threatens the safety of the passengers. Therefore, it has become a key problem for the automotive industry to develop a low-cost and high-reliability camera module, which not only relates to the performance improvement of the vehicle-mounted camera, but also directly affects the safe application and long-term development of the automatic driving technology. SUMMARY

[0005] One object of the present application is to provide a camera module with low cost and high stability, which avoids lens displacement or falling off caused by lens assembly loosening and ensures the imaging effect of the camera module.

[0006] To achieve the above object, the technical scheme adopted by the present application is as follows: a camera module, comprising: a lens assembly, comprising a lens barrel and a lens accommodated in the lens barrel, the lens barrel is provided with a first glue accommodating portion, the first glue accommodating portion is annularly arranged on the outer circumferential side of the lens barrel in a direction perpendicular to the optical axis; an upper shell support provided with a bearing surface, an accommodating cavity and a second glue accommodating portion, the accommodating cavity is suitable for accommodating the lens barrel in the direction of the optical axis, the bearing surface is located on the inner surface of the upper shell support, the bearing surface is annularly attached to the outer circumferential side of the lens barrel, the second glue accommodating portion is annularly arranged on the upper end of the bearing surface and faces the first glue accommodating portion in a direction perpendicular to the optical axis, so that a glue accommodating space is formed between the first glue accommodating portion and the second glue accommodating portion; a first glue material, the first glue material is filled in the glue accommodating space, so as to fix the lens assembly and the upper shell support; a photosensitive assembly, the photosensitive assembly is oppositely arranged with the lens assembly along the optical axis, the photosensitive assembly comprises a filter, a circuit board and a photosensitive chip, the photosensitive chip is electrically connected with the circuit board, the filter is arranged on the photosensitive path of the photosensitive chip, and the filter is arranged between the lens assembly and the photosensitive chip.

[0007] As another preferred, the first glue accommodating portion comprises an upper groove end, a first inner groove surface, a second inner groove surface and a lower groove end, the upper groove end, the first inner groove surface, the second inner groove surface and the lower groove end are connected in sequence, the upper groove end and the lower groove end are arranged in the direction of the optical axis, the first inner groove surface and the second inner groove surface are inclinedly connected, and a first included angle is present between the first inner groove surface and the second inner groove surface in a direction perpendicular to the optical axis.

[0008] As a preferred, the opening of the first glue accommodating portion and the opening of the second glue accommodating portion opposite thereto are at least partially misaligned.

[0009] Further preferably, the second glue accommodating portion is provided with a support upper surface, an inclined section and a gentle section connected in sequence, the inclined section and the gentle section are inclinedly connected, a second included angle is present between the inclined section and the gentle section in a direction perpendicular to the optical axis, the support upper surface is higher than the upper groove end in a direction perpendicular to the optical axis, and the gentle section is higher than the lower groove end in a direction perpendicular to the optical axis.

[0010] Further preferably, the glue accommodating space is used for accommodating at least a part of the first glue material, the depth of the glue accommodating space is 0.4mm-1.3mm, and the width of the glue accommodating space is 0.2mm-0.9mm.

[0011] Further preferably, the camera module further comprises a photosensitive assembly, the photosensitive assembly is arranged opposite to the lens assembly along the optical axis direction, a cavity is formed between the photosensitive assembly and the lens assembly, and an escape hole is arranged on the photosensitive assembly, the escape hole is used for gas exchange between the cavity and the external environment.

[0012] Further preferably, the escape hole has a diameter of 0.05mm-0.5mm.

[0013] Further preferably, the escape hole comprises a first escape hole and a second escape hole in communication with the first escape hole, the escape hole is used for accommodating at least part of the second adhesive material, and the first escape hole has a smaller diameter than the second escape hole.

[0014] Further preferably, the photosensitive assembly further comprises a reinforcing plate, the reinforcing plate is attached to the lower surface of the circuit board, the reinforcing plate is provided with an air duct and a gap, the gap is opened on the side of the reinforcing plate close to the circuit board along a direction perpendicular to the optical axis, the circuit board shields at least part of the gap, the circuit board is provided with a third escape hole, the third escape hole and the air duct are respectively in communication with the two ends of the gap through bending, and the air duct passes through the reinforcing plate along the optical axis direction, the third escape hole, the gap and the air duct form a bent escape channel.

[0015] Further preferably, the first adhesive material is glue or solder, the first adhesive material continuously fills the adhesive space, or the first adhesive material is discontinuously filled in the adhesive space, the second adhesive material is glue, the first included angle is not greater than 90°, and the second included angle is not less than 90°.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] (1) The first adhesive space and the second adhesive space form an adhesive space for filling the first adhesive material, thereby fixing the lens assembly and the upper shell support to each other, compared with the threaded fixing mode, the loosening problem caused by thermal expansion and contraction in high and low temperature environments is greatly avoided, the risk of lens barrel displacement or falling is reduced, the stability of imaging clarity is ensured, and the mechanical stability of the camera module in complex environments is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a camera module according to some embodiments of the present application;

[0019] Figure 2 is Figure 1 is an enlarged view of the area A in

[0020] Figure 3 isFigure 1 Enlarged view of the middle region B;

[0021] Figure 4 is a structural schematic diagram of a camera module according to another embodiment of the application;

[0022] Figure 5 is a structural schematic diagram of a camera module according to another embodiment of the application;

[0023] Figure 6 is Figure 5 Enlarged view of the middle region C.

[0024] In the figure: 1, camera module; 10, lens assembly; 11, lens barrel; 111, first glue accommodating part; 1111, first inner groove surface; 1112, second inner groove surface; 1113, upper groove end; 1114, lower groove end; 20, upper shell support; 21, second glue accommodating part; 211, inclined section; 212, flat section; 213, support upper surface; 22, accommodating cavity; 23, bearing surface; 30, photosensitive assembly; 31, circuit board; 32, escape hole; 321, first escape hole; 322, second escape hole; 323, third escape hole; 33, reinforcing plate; 331, air channel; 332, gap; 41, first glue material; 42, second glue material; 2, glue accommodating space. DETAILED DESCRIPTION

[0025] Hereinafter, the application will be further described in conjunction with specific embodiments. It should be noted that, under the premise of no conflict, each embodiment described below or each technical feature can be combined with any other embodiment or technical feature to form a new embodiment.

[0026] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0028] The terms "comprise" and "have" and any variations thereof in the specification and claims of this application are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to those listed steps or units but can include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0029] The present application provides a camera module 1, the structure of the camera module 1 is as shown in Figure 1 The camera module 1 includes a lens assembly 10, an upper shell support 20, and a first adhesive material 41, the lens assembly 10 includes a lens barrel 11 and a lens contained in the lens barrel 11, the lens barrel 11 is provided with a first adhesive containing portion 111, the first adhesive containing portion 111 is annularly arranged on the outer circumferential side of the lens barrel 11 along the direction perpendicular to the optical axis C; the upper shell support 20 is provided with a second adhesive containing portion 21, a containing cavity 22, and an abutting surface 23, as shown in Figure 1 The containing cavity 22 is used to contain the lens barrel 11 along the direction of the optical axis C, as shown in Figure 3 Wherein, Figure 3 is Figure 1 An enlarged view of the region B in The abutting surface 23 is arranged on the inner surface of the upper shell support 20, the abutting surface 23 is annularly attached to the outer circumferential side of the lens barrel 11, the second adhesive containing portion 21 is annularly arranged on the upper end of the abutting surface 23 and faces the first adhesive containing portion 111 along the direction perpendicular to the optical axis C, so that the first adhesive containing portion 111 and the second adhesive containing portion 21 form an adhesive containing space 2, the first adhesive material 41 is filled in the adhesive containing space 2, so as to fix the lens assembly 10 and the upper shell support 20 to each other.

[0030] Specifically, the first adhesive material 41 is filled in the adhesive containing space 2 to fix the lens assembly 10 and the upper shell support 20, compared with the fixing method by thread and nut interlocking in the prior art, the loosening problem caused by the thermal expansion and contraction characteristics of the material itself under high and low temperature environment is greatly avoided, the displacement or falling risk of the lens barrel 11 is reduced, the stability of the imaging clarity is ensured, compared with the fixing method by thread and nut interlocking, the fixing method by the first adhesive material 41 can effectively increase the tensile strength and improve the mechanical stability of the camera module 1 in complex environment.

[0031] In some embodiments, the opening of the first adhesive containing portion 111 and the opening of the second adhesive containing portion 21 opposite thereto are at least partially misaligned, as shown in Figure 3As shown, the opening of the first glue accommodating portion 111 is lower than the opening of the second glue accommodating portion 21. First, in the process of filling the first glue material 41, the first glue material 41 can be guided to flow from high to low, forming a specific flow path of the first glue material 41, avoiding overflow of the first glue material 41, so that the first glue material 41 can be more evenly distributed in the entire glue accommodating space 2; second, the contact area of the first glue material 41 and the bearing surface 23 is increased. If the opening of the first glue accommodating portion 111 is consistent with the opening of the second glue accommodating portion 21, the area that the first glue material 41 can contact with the upper shell support 20 is only the second glue accommodating portion 21. If the opening of the first glue accommodating portion 111 is lower than the opening of the second glue accommodating portion 21, at least a part of the bearing surface 23 can correspond to the opening of the first glue accommodating portion 111, so that the first glue material 41 can not only contact the second glue accommodating portion 21, but also contact at least a part of the bearing surface 23, thereby increasing the stability of the camera module 1.

[0032] In some embodiments, the first glue accommodating portion 111 includes an upper groove end 1113, a first inner groove surface 1111, a second inner groove surface 1112, and a lower groove end 1114, which are connected in sequence. The upper groove end 1113 and the lower groove end 1114 are arranged along the optical axis C direction. The first inner groove surface 1111 and the second inner groove surface 1112 are inclinedly connected. A first included angle is present between the first inner groove surface 1111 and the second inner groove surface 1112 in a direction perpendicular to the optical axis C. The first included angle is not greater than 90°.

[0033] In some embodiments, as shown in Figure 3 The upper groove end 1113 and the lower groove end 1114 are arranged along the extension direction of the optical axis C. The first inner groove surface 1111 and the second inner groove surface 1112 are bently connected, so that a first included angle is present between them in a direction perpendicular to the optical axis C. Not only can the space for accommodating the first glue material 41 be increased, but also the contact area between the first glue material 41 and the lens barrel 11 can be increased. If the lens barrel 11 is not provided with the first glue accommodating portion 111, the first glue material 41 can only contact the outer side surface of the lens barrel 11, and the contact area between them is small, which reduces the reliability of the connection between the lens barrel 11 and the upper shell support 20, and the risk of displacement or falling of the lens barrel 11 is high. Figure 3As shown, when the first adhesive material 41 is filled in the adhesive space 2, the first included angle is no greater than 90°. The positions where the first adhesive material 41 can contact the lens barrel 11 are at least a portion of the first inner groove surface 1111, the second inner groove surface 1112, and the outer periphery of the lens barrel 11. Furthermore, the smaller the degree of the first included angle, the more it can limit the overflow of the first adhesive material 41, thereby confining the first adhesive material 41 within the adhesive space 2 and increasing the reliability of the connection. If the first included angle is greater than 90°, the area that the first adhesive material 41 can contact with the lens barrel 11 decreases. That is to say, when the angle of the first included angle increases, although the area of ​​the first inner groove surface 1111 will increase, the first adhesive material 41 cannot contact the outer periphery of the lens barrel 11, resulting in a decrease in the sum of the areas that the first adhesive material 41 and the lens barrel 11 can contact. Therefore, the first included angle is no greater than 90°, which greatly increases the area that the first adhesive material 41 can contact with the lens barrel 11, ensuring the effectiveness of the connection of the first adhesive material 41.

[0034] In some embodiments, the first included angle is preferably 75°.

[0035] In some embodiments, the second adhesive portion 21 is provided with a bracket upper surface 213, an inclined section 211, and a smooth section 212 connected in sequence. The inclined section 211 and the smooth section 212 are inclinedly connected, and there is a second included angle between the inclined section 211 and the smooth section 212 in the direction perpendicular to the optical axis C. The bracket upper surface 213 is higher than the upper groove end 1113 in the direction perpendicular to the optical axis C, and the smooth section 212 is higher than the lower groove end 1114 in the direction perpendicular to the optical axis C. The second included angle is not less than 90°.

[0036] Specifically, such as Figure 3 As shown, the upper surface 213 of the bracket, the inclined section 211, and the flat section 212 are connected in sequence to form the second adhesive receiving part 21. When the first adhesive 41 is filled into the adhesive receiving space 2, the first adhesive 41 can flow along the inclined section 211 to the flat section 212, which improves the fluidity of the first adhesive 41. Secondly, there is a second included angle between the inclined section 211 and the flat section 212, which is not less than 90°, which increases the contact area between the first adhesive 41 and the upper shell bracket 20, and also increases the space of the second adhesive receiving part 21, thereby increasing the adhesive receiving space 2 to accommodate more first adhesive 41.

[0037] In some embodiments, the second included angle is preferably 115°.

[0038] In some embodiments, the openings of the first glue accommodating portion 111 and the second glue accommodating portion 21 are arranged in a staggered manner, thereby forming a glue accommodating space 2 to limit the amount of glue in the glue accommodating space 2; if a large amount of glue is filled into the glue accommodating space 2, the glue and the expansion and contraction deformation of the lens barrel 11 will be different under high and low temperature impact, thereby generating stress between the lens barrel 11 and the glue, and the stress acts on the lens barrel 11 to deform the lens barrel 11, which will also cause the lens mounting hole inside the lens assembly 10 for mounting the lens to deform. Therefore, by limiting the filling amount of the first glue material 41, on the one hand, the lens assembly 10 and the upper shell support 20 can be fixed to each other to avoid the problem that the lens assembly 10 and the upper shell support 20 are separated from each other, and on the other hand, the problem of stress concentration and deformation of the lens barrel 11 and the mounting hole for mounting the lens during the solidification of the first glue material 41 is avoided, so as to enhance the stability of the camera module 1 and ensure the imaging effect of the camera module 1.

[0039] In some embodiments, the surface of the inclined section 211 and the gentle section 212 is provided with a sawtooth texture to increase the adhesion of the first glue material 41.

[0040] In some embodiments, the glue accommodating space 2 is used to accommodate at least part of the first glue material 41, the depth of the glue accommodating space 2 ranges from 0.4mm to 1.3mm, or the depth of the glue accommodating space 2 satisfies the numerical range of 0.5mm to 1.2mm, and specifically can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.1mm, 1.15mm, 1.2mm, the width of the glue accommodating space 2 ranges from 0.2mm to 0.9mm, or the width of the glue accommodating space 2 satisfies the numerical range of 0.3mm to 0.8mm, and specifically can be 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm.

[0041] In some embodiments, the camera module 1 can be arranged in the cabin or outside the cabin. Due to the large difference between the environments in the cabin and outside the cabin, the specific structure of the camera module 1 is slightly different. The following will be divided into two embodiments to describe the specific structure of the camera module 1 under different installation environments.

[0042] In some embodiments, for the camera module 1 arranged in the cabin, the camera module 1 further comprises a photosensitive assembly 30 arranged opposite to the lens assembly 10 along the optical axis C direction, the photosensitive assembly 30 comprises a filter, a filter support for fixing the filter, a photosensitive chip and a circuit board 31, the photosensitive chip is electrically connected with the circuit board 31, the filter is arranged on the photosensitive path of the photosensitive chip, and the filter is arranged between the lens assembly 10 and the photosensitive chip, and a cavity is formed between the photosensitive assembly 30 and the lens assembly 10. The photosensitive assembly 30 further comprises an escape hole 32 and a reinforcing plate 33, the reinforcing plate 33 is attached to the lower surface of the circuit board 31, that is, the reinforcing plate 33 is attached to the side of the circuit board 31 away from the cavity, providing mechanical support for the circuit board 31, making the circuit board 31 more solid and not easy to deform, and at the same time improving the heat dissipation effect of the circuit board 31 to avoid heat concentration of the circuit board 31; as shown in Figure 2 The escape hole 32 comprises a third escape hole 323 arranged on the circuit board 31, an air channel 331 and a gap 332 arranged on the reinforcing plate 33, the gap 332 is opened on the side of the reinforcing plate 33 close to the circuit board 31, that is, the gap 332 is equivalent to a groove arranged on the reinforcing plate 33, the air channel 331 is arranged along the optical axis C direction, and the third escape hole 323 and the air channel 331 are respectively bent and communicated with both ends of the gap 332 to form the escape hole 32, the escape hole 32 is implemented as a bent escape passage, so that the gas inside the cavity can flow to the outside through the escape hole 32, avoiding damage to the photosensitive assembly 30 due to pressure imbalance. Since the camera module 1 is installed in the cabin, the dust content in the cabin air is lower than that in the air outside the cabin, so the escape hole 32 of the camera module 1 installed in the cabin does not need to be sealed with glue. In order to avoid a large amount of dust entering the cavity, the bent escape hole 32 is arranged; when the air in the external environment enters the inside of the cavity through the bent escape hole 32, the dust and impurities in the air are retained in the bent escape passage due to the bending extension of the escape hole 32, and the gas enters the inside of the cavity, thereby achieving the purpose of filtering dust and impurities, preventing dust and impurities from entering the cavity and affecting the imaging of the camera module 1, and ensuring the imaging effect of the camera module 1.

[0043] In some embodiments, the opening of the end of the air channel 331 away from the gap 332 is covered with a waterproof and breathable film, which can on the one hand ensure the exchange of gas between the cavity and the external environment, making the air pressure inside the cavity more stable, and on the other hand, the waterproof and breathable film can prevent water vapor in the air from entering the cavity, avoid the internal environment of the cavity being humid, affect the imaging effect, and also can block the impurities in the air, ensure the imaging effect of the camera module 1.

[0044] Specifically, the waterproof and breathable film can be selected from a PTFE (polytetrafluoroethylene) waterproof and breathable film, a TPU (thermoplastic polyurethane elastomer) waterproof and breathable film, a silica gel waterproof and breathable film, or a polyester fiber waterproof and breathable film, without limitation on the type of the waterproof and breathable film.

[0045] In some embodiments, for the camera module 1 installed outside the cabin, the temperature difference of the cabin environment is large, and the dust and impurities in the air are also more. The dust will affect the imaging effect of the camera module 1. Therefore, the sealing of the camera module 1 needs to be improved to prevent dust and impurities from entering.

[0046] In some embodiments, the escape hole 32 includes a first escape hole 321 and a second escape hole 322 in communication with the first escape hole 321. The escape hole 32 is used to accommodate at least a portion of the second glue material 42. The aperture of the first escape hole 321 is smaller than the aperture of the second escape hole 322.

[0047] Specifically, as shown in Figure 5 and Figure 6 , wherein, Figure 6 is Figure 5 an enlarged view of the region C in , the cavity between the light sensing assembly 30 and the lens assembly 10 is baked to exhaust the humid air in the cavity. The air in the cavity can be exhausted through the escape hole 32, so that the cavity remains dry, preventing water vapor from affecting the imaging effect of the camera module 1.

[0048] As shown in Figure 6 , the first escape hole 321 and the second escape hole 322 are arranged along a direction parallel to the optical axis C. After baking and exhausting, the escape hole 32 needs to be plugged by the second glue material 42, as shown in Figure 4 , to avoid air containing water vapor or dust impurities from the outside entering the cavity, so that the cavity always maintains a dry and sealed environment, ensuring the imaging effect of the camera module 1.

[0049] In some embodiments, as shown in Figure 6 , the aperture of the first escape hole 321 is smaller than the aperture of the second escape hole 322, that is, the escape hole 32 is in a stepped shape. During the filling of the second glue material 42, the change in the aperture allows the glue to stay in the escape hole 32, enabling precise control of the filling position and amount of the second glue material 42, avoiding the problem of excessive glue filling or inaccurate filling position. In addition, the second escape hole 322 facilitates the immersion of the glue, and the first escape hole 321 can prevent the glue from dripping onto the lens, preventing the glue from contaminating the lens.

[0050] In some embodiments, the hole diameter of the escape hole 32 is 0.05mm-0.5mm, and can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, for example, the hole diameter of the first escape hole 321 can be 0.08mm, and the hole diameter of the second escape hole 322 can be 0.3mm, as long as the hole diameter of the first escape hole 321 is smaller than that of the second escape hole 322, which is not limited herein.

[0051] In some embodiments, after filling the second glue material 42, the second glue material 42 needs to be baked to solidify.

[0052] In some embodiments, the material of the first glue material 41 is glue or solder, the first glue material 41 continuously fills the glue space 2, or the first glue material 41 discontinuously fills the glue space 2, and the material of the second glue material 42 is glue.

[0053] In some embodiments, if the material of the first glue material 41 is glue, one or more of ultraviolet curing glue, epoxy resin, curing glue and hot melt glue can be selected to bond the lens assembly 10 and the upper shell support 20 and provide good bonding performance, further improve the reliability of the camera module 1, and thus enhance the imaging quality of the camera module 1. If epoxy resin is used, flexibility and weather resistance can be considered, the temperature resistance should be-40℃-150℃, which can adapt to the high and low temperature impact of vehicle-mounted. According to the actual use requirement, the selection can be made, which is not limited herein.

[0054] In some embodiments, if the material of the first glue material 41 is solder, low-temperature lead-free solder can be selected, and the melting point of the low-temperature lead-free solder is ≤200℃, which can effectively avoid high-temperature damage to the camera module 1, and make the camera module 1 more beautiful.

[0055] In some embodiments, if the material of the second glue material 42 is glue, one or more of ultraviolet curing glue, epoxy resin, curing glue and hot melt glue can be selected according to the actual use requirement, which is not limited herein.

[0056] In some embodiments, the first adhesive material 41 continuously fills the adhesive space 2, so that the contact area between the first adhesive material 41 and the lens assembly 10 and the upper shell support 20 is increased, thereby increasing the reliability of fixing the lens assembly 10 inside the upper shell support 20, avoiding displacement or falling of the lens assembly 10, so that the camera module 1 is more suitable for environments with more vibration, such as vehicle-mounted cameras, action cameras, and other application scenarios. During use, the device will often be subjected to vibration and impact. By increasing the contact area between the first adhesive material 41 and the lens assembly 10 and the upper shell support 20, the camera module 1 improves the reliability of fixing the lens assembly 10, better resists vibration and impact, prevents displacement or falling of the lens assembly 10, and ensures that the shooting quality is not affected.

[0057] In some embodiments, the first adhesive material 41 is discontinuously filled in the adhesive space 2, that is, the first adhesive material 41 is filled in the adhesive space 2 by adopting a point coating method. The point coating method can accurately place an appropriate amount of the first adhesive material 41 at the required position, avoid waste of the first adhesive material 41, and prevent the first adhesive material 41 from overflowing due to excessive amount, affecting the appearance of the product or causing pollution to other components. In addition, the point coating method can more quickly complete the filling of the first adhesive material 41 in the adhesive space 2, reduce the coating time, help improve the overall production efficiency, and facilitate the realization of automation of the point coating equipment, further improve the consistency and efficiency of production, so that the camera module 1 is more suitable for the consumer electronics field, such as mobile phones or tablet computers. The discontinuous filling method can accurately control the amount and position of the first adhesive material 41, adapt to the compact space layout inside the mobile phone or tablet computer, and help realize the miniaturization and thinness design of the camera module 1.

[0058] In the prior art, the lens assembly 10 and the upper shell support 20 are generally fixed by thread engagement, but due to the thermal expansion and contraction characteristics of the material itself, the lens assembly 10 and the upper shell support 20 are prone to looseness, causing the lens assembly 10 to fall off, and therefore some technical solutions have appeared to fix the lens assembly 10 on the upper shell support 20 by glue. When the lens assembly 10 and the upper shell support 20 are fixed by glue, a relatively complex space for accommodating glue is usually designed, and then a large amount of glue is filled in the complex space to fix the lens and the support together. Although filling a large amount of glue can increase the reliability of the fixation, it will also face new problems, such as the space for accommodating glue is too complex, and for some glue with poor fluidity, it cannot completely fill the space, resulting in the existence of space without glue filling, that is, the poor fluidity of the glue will cause part of the space to be not filled with glue, which is prone to cause the lens to loosen. Therefore, in order to fully fill the space, it is necessary to select glue with strong fluidity, which will limit the selection of glue. Secondly, the space for accommodating glue is large, and in order to fill the space, more glue needs to be used, which not only increases the production cost, but also causes the lens assembly 10 to be deformed due to extrusion. Moreover, the more glue, the greater the degree of deformation of the lens assembly 10, and the glue will have a risk of variation when solidifying, which can easily cause the lens mounting hole inside the lens barrel 11 to be deformed when the glue attached to the outer peripheral wall of the lens assembly 10 solidifies, thereby causing the edge of the lens installed in the lens mounting hole to be deformed due to extrusion, ultimately affecting the imaging performance of the camera module 1. Furthermore, due to the difference in the coefficient of thermal expansion (CTE) between the glue and the lens barrel 11, the expansion and contraction of the glue and the lens barrel 11 will be different under high and low temperature impact, thereby generating stress between the lens barrel 11 and the glue. The stress acting on the lens barrel 11 causes the lens barrel 11 to be deformed, which also causes the lens mounting hole inside the lens assembly 10 for mounting the lens to be deformed, thereby causing the edge of the lens installed in the lens mounting hole to be deformed due to extrusion, ultimately affecting the imaging performance of the camera module 1. Finally, the design of a relatively complex space will increase the production cost due to the complex processing technology.

[0059] Based on the above analysis, the present application provides a camera module 1, a first glue accommodating part 111 provided on the lens assembly 10 and a second glue accommodating part 21 provided on the upper shell support 20 together form a glue accommodating space 2 for accommodating a first glue material 41, such as Figure 1 and Figure 3As shown, the first glue accommodating part 111 is arranged on the outer circumferential side of the lens assembly 10, and the second glue accommodating part 21 is arranged on the upper end of the bearing surface 23 of the upper shell support 20, that is, the second glue accommodating part 21 is arranged on the upper end of the upper shell support 20 and is arranged in a staggered manner with the first glue accommodating part 111, so that the first glue material 41 is arranged in the glue accommodating space 2, and the first glue material 41 forms mechanical interlocking after solidification, and the tensile strength is far greater than that of the threaded fixing, thereby avoiding displacement or falling of the lens assembly 10. First, the structure of the glue accommodating space 2 is relatively simple, facilitating the flow of glue to fill the glue accommodating space 2, so that the selection of glue is not limited by the flowability of glue, and even glue with poor flowability can also fill the glue accommodating space 2, and the selection range of glue is wider. Secondly, the glue filling amount of the glue accommodating space 2 is reasonable, and the glue filling amount is limited to avoid the problem of deformation of the lens mounting hole in the lens barrel 11 caused by the solidification of glue, and to avoid the problem of stress concentration, thereby ensuring the imaging performance of the camera module 1 and improving the stability of the camera module 1. Finally, the glue accommodating space 2 provided by the present application has a simpler processing process, lower processing cost, is more suitable for large-scale automatic production, and has higher product consistency.

[0060] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An image capturing module, comprising: The lens assembly comprises a lens barrel and a lens accommodated in the lens barrel, and the lens barrel is provided with a first glue accommodating portion arranged annularly on the outer circumferential side of the lens barrel in a direction perpendicular to the optical axis. The upper shell support is provided with a bearing surface, an accommodating cavity and a second glue accommodating portion, the accommodating cavity is adapted to accommodate the lens barrel in the direction of the optical axis, the bearing surface is located on the inner surface of the upper shell support, the bearing surface is annularly attached to the outer circumferential side of the lens barrel, and the second glue accommodating portion is annularly arranged on the upper end of the bearing surface and faces the first glue accommodating portion in a direction perpendicular to the optical axis, so that a glue accommodating space is formed between the first glue accommodating portion and the second glue accommodating portion. A first glue material is filled in the glue accommodating space to fix the lens assembly and the upper shell support. The light sensing assembly is arranged opposite to the lens assembly along the optical axis, and comprises a filter, a circuit board and a light sensing chip, the light sensing chip is electrically connected with the circuit board, the filter is arranged on the light sensing path of the light sensing chip, and the filter is arranged between the lens assembly and the light sensing chip. The first glue accommodating portion comprises an upper groove end, a first inner groove surface, a second inner groove surface and a lower groove end, the upper groove end, the first inner groove surface, the second inner groove surface and the lower groove end are connected in sequence, the upper groove end and the lower groove end are arranged in the direction of the optical axis, the first inner groove surface and the second inner groove surface are connected at an angle, and a first included angle is formed between the first inner groove surface and the second inner groove surface in a direction perpendicular to the optical axis.

2. The camera module of claim 1, wherein, The opening of the first glue accommodating portion and the opening of the second glue accommodating portion opposite thereto are at least partially misaligned.

3. The camera module of claim 1, wherein, The second glue accommodating portion is provided with a support upper surface, an inclined section and a flat section connected in sequence, the inclined section and the flat section are connected at an angle, a second included angle is formed between the inclined section and the flat section in a direction perpendicular to the optical axis, the support upper surface is higher than the upper groove end in a direction perpendicular to the optical axis, and the flat section is higher than the lower groove end in a direction perpendicular to the optical axis.

4. The camera module of claim 2, wherein, The glue accommodating space is used for accommodating at least part of the first glue material, the depth of the glue accommodating space is 0.4mm-1.3mm, and the width of the glue accommodating space is 0.2mm-0.9mm.

5. The camera module of claim 4, wherein the lens is disposed on the substrate. A cavity is formed between the light sensing assembly and the lens assembly, and an escape hole is arranged on the light sensing assembly, which is used for gas exchange between the cavity and the external environment.

6. The camera module of claim 5, wherein the lens barrel is configured to move the lens assembly along the optical axis. The aperture of the escape hole is 0.05mm-0.5mm.

7. The camera module of claim 6, wherein the lens is disposed on the substrate. The escape hole comprises a first escape hole and a second escape hole in communication with the first escape hole, the escape hole is used for accommodating at least part of the second glue material, and the aperture of the first escape hole is smaller than the aperture of the second escape hole.

8. The camera module of claim 7, wherein the lens is disposed on the substrate. ​ 9. The camera module of claim 6, wherein, The light-sensing assembly further comprises a reinforcing plate attached to the lower surface of the circuit board, the reinforcing plate is provided with an air passage and a gap, the gap is opened on the side of the reinforcing plate close to the circuit board along a direction perpendicular to the optical axis, the circuit board shields at least part of the gap, the circuit board is provided with a third escape hole, the third escape hole and the air passage are respectively bent and communicated with two ends of the gap, and the air passage passes through the reinforcing plate along the optical axis direction, the third escape hole, the gap and the air passage form a bent escape passage.

10. The camera module of claim 8, wherein, The material of the first adhesive is glue or solder, the first adhesive continuously fills the adhesive space, or the first adhesive discontinuously fills the adhesive space, the material of the second adhesive is glue, the first included angle is not greater than 90°, and the second included angle is not less than 90°.

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