Camera modules and terminal equipment

Abstract

The present application relates to a camera module and a terminal device. The camera module includes a structural member, a lens assembly and a driving member. The lens assembly includes a first lens and a second lens, and the first lens is fixed to the structural member. The second lens is arranged on the driving member, and at least a part of the driving member is configured to be able to move in a direction close to or away from the structural member. The above-mentioned camera module can reduce the weight of the lens assembly carried by the driving member, which is beneficial to reducing the load of the driving member, and further beneficial to reducing the volume of the driving member and improving the operating reliability of the driving member.

Description

Technical Field

[0001] The present application relates to the field of photography, and in particular to a camera module and a terminal device. Background Art

[0002] With the rapid development of camera technology, camera modules are increasingly used in terminal devices such as smartphones, tablets, and e-readers. Among them, camera modules equipped with motors to drive the lens to move and achieve focus have emerged. However, with the development of the trend of wide-angle lenses and large image surfaces, the motors in current camera modules are too large and have low operating reliability. Summary of the invention

[0003] The embodiments of the present application provide a camera module and a terminal device to solve the problems of excessively large motor size and low operational reliability in current camera modules.

[0004] A camera module, comprising:

[0005] Structural parts;

[0006] A lens assembly, comprising a first lens and a second lens, wherein the first lens is fixed on the structural member; and

[0007] A driving member, wherein the second lens is disposed on the driving member, and at least a portion of the driving member is configured to be movable toward or away from the structural member.

[0008] In the above-mentioned camera module, the weight of the first lens part of the lens assembly is borne by the structural member, and the weight of the second lens part is borne by the driving member, which is conducive to reducing the weight of the driving part of the driving member, reducing the load of the driving member, thereby reducing the power and structural requirements of the camera module for the driving member, and then helping to reduce the volume of the driving member to compress the overall volume of the camera module. At the same time, the overall weight of the driving member and the second lens is reduced, and the inertia of movement is reduced, which is conducive to avoiding the risk of the driving member and the second lens sinking or even falling during movement, thereby helping to improve the operational reliability of the camera module. Therefore, in the above-mentioned camera module, even if the lens assembly has a large volume and weight due to the wide-angle and large image surface design, the load of the driving member will not be too large, so that the camera module can have a small volume and high operational reliability, so the camera module provided by the present application can be more suitable for wide-angle and large image surface lens assemblies.

[0009] A terminal device comprises a housing and a camera module as described in any of the above embodiments, wherein a structural component of the camera module is connected to the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic diagram of the structure of a camera module in some embodiments;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the camera module in which the second lens is in another position;

[0013] Figure 3 A schematic diagram of the structure of a protective cover plate, a structural member and a first lens in some embodiments;

[0014] Figure 4 Schematic diagram of the structure of terminal equipment in some embodiments.

[0015] Reference numerals:

[0016] 10. Camera module; 110. Lens assembly; 1110. First lens; 1111. First lens barrel; 1112. First body; 1113. Second step portion; 1114. First lens group; 1115. First lens; 1116. Second lens; 1117. Stop portion; 1120. Second lens; 1121. Second lens barrel; 1122. Second body; 1123. Fifth step portion; 1124. Second lens group; 1125. Optical axis; 120. Photosensitive chip; 130. Driving member; 1310. Second body; 1311. Transmission member; 140. Structural member; 1410. First body; 1411. First step portion; 1412. Third step portion; 1413. Fourth step portion; 1414. Light hole; 150. Protective cover; 160. Filter; 20. Terminal device; 210. Shell. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0018] See also Figure 1 and Figure 2 , Figure 1 and Figure 2Schematic diagram of the structure of the lens assembly 110 of the camera module 10 in different focal length states in some embodiments. In some embodiments, the camera module 10 includes a lens assembly 110 and a photosensitive chip 120. The lens assembly 110 includes multiple lenses with optical focal lengths, such as multiple convex lenses and concave lenses. In other words, the lens assembly 110 has the ability to adjust the light from the object side. The surface of the photosensitive chip 120 facing the lens assembly 110 coincides with the imaging surface of the lens assembly 110. The light from the object side can be incident on the photosensitive chip 120 to form an image after being adjusted by the multiple lenses in the lens assembly 110, so that the camera module 10 has an imaging function.

[0019] In some embodiments, the camera module 10 further includes a driving member 130, and the lens assembly 110 includes a first lens 1110 and a second lens 1120 in sequence from the object side to the image side along the optical axis 1125, and the lenses of the lens assembly 110 are distributed in the first lens 1110 and the second lens 1120. The second lens 1120 is transmission-set on the driving member 130, and the driving member 130 can drive the second lens 1120 to move toward or away from the first lens 1110, thereby changing the focal length of the lens assembly 110 and realizing the focusing function, so that the camera module 10 can adapt to objects at different object distances, and can have good imaging quality for objects at different object distances. For example, Figure 2 The camera module 10 shown is relative to Figure 1 For the camera module 10 shown, the driving member 130 drives the second lens 1120 to move toward the direction close to the first lens 1110 .

[0020] In some embodiments, the lenses with optical power in the lens assembly 110 are coaxially arranged, and the common axis of the lenses can be regarded as the optical axis 1125 of the lens assembly 110, that is, the optical axis 1125 of the camera module 10. It should be noted that the side of the first lens 1110 facing away from the second lens 1120 can be understood as the object side of the lens assembly 110, and the side of the second lens 1120 facing away from the first lens 1110 can be understood as the image side of the lens assembly 110, and the direction from the first lens 1110 to the second lens 1120 along the optical axis 1125 can be regarded as the direction from the object side to the image side.

[0021] The specific setting of the driving member 130 is not limited, and it can be any driving structure such as a motor or an electric motor that can drive the second lens 1120 to move. The driving member 130 can contact part of the second lens 1120 to drive the second lens 1120 to move. The driving member 130 can also be set circumferentially around the second lens 1120.

[0022] Furthermore, in some embodiments, the camera module 10 further includes a structural member 140, the first lens 1110 is fixedly disposed on the structural member 140, and the driving member 130 can drive the second lens 1120 to move toward or away from the first lens 1110. In other words, the structural member 140 can fix and carry the first lens 1110 of the lens assembly 110, and the driving member 130 can fix, carry and drive the second lens 1120.

[0023] The camera module 10 described above divides the lens assembly 110 into two parts, namely, the first lens 1110 and the second lens 1120, wherein the weight of the first lens 1110 is borne by the structural member 140, and the driving member 130 bears the weight of the second lens 1120. Thus, the weight of the part driven by the driving member 130 can be reduced, thereby reducing the load of the driving member 130, reducing the power and structural requirements of the camera module 10 for the driving member 130, and further helping to reduce the volume of the driving member 130, so as to compress the overall volume of the camera module 10. At the same time, the overall weight of the driving member 130 and the second lens 1120 is reduced, and the motion inertia is reduced, which helps to avoid the risk of the driving member 130 and the second lens 1120 sinking or even falling during movement, thereby helping to improve the operational reliability of the camera module 10. It can be understood that by reducing the load of the driving member 130, even if the lens assembly 110 has a larger volume and weight due to the wide-angle and large image surface design, the load of the driving member 130 will not be too large, so that the camera module 10 can have a small volume and high operational reliability when configured with a wide-angle and large image surface lens assembly 110. Therefore, the camera module 10 provided in the present application can be more adaptable to the wide-angle and large image surface lens assembly 110.

[0024] In some embodiments, the first lens 1110 includes a first lens barrel 1111 and a first lens group 1114 disposed in the first lens barrel 1111. For example, the first lens barrel 1111 is roughly in the shape of a hollow cylinder, and the first lens group 1114 is accommodated in the hollow space of the first lens barrel 1111. The first lens group 1114 may include one or more lenses with optical power, and the first lens barrel 1111 is fixedly connected to the structural member 140. The second lens 1120 includes a second lens barrel 1121 and a second lens group 1124 disposed in the second lens barrel 1121. For example, the second lens barrel 1121 is roughly in the shape of a hollow cylinder, and the second lens group 1124 is accommodated in the hollow space of the second lens barrel 1121. The second lens group 1124 may include one or more lenses with optical power, and the second lens barrel 1121 is fixedly connected to the driving member 130. The arrangement of the first lens barrel 1111 and the second lens barrel 1121 can improve the structural strength of the lens assembly 110, thereby improving the structural strength of the camera module 10. At the same time, the first lens barrel 1111 and the second lens barrel 1121 can also provide fixing and protection for the first lens group 1114 and the second lens group 1124, respectively.

[0025] In some embodiments, the number of lenses in the first lens group 1114 is greater than or equal to 1 and less than or equal to 4. The number of lenses in the first lens group 1114 is less than or equal to 4, which is conducive to reducing the load-bearing of the structural member 140, thereby reducing the volume of the camera module 10 and improving the structural strength of the camera module 10. In some embodiments, the number of lenses in the second lens group 1124 is greater than or equal to 1 and less than or equal to 7, which can reduce the load of the driving member 130, thereby reducing the volume of the camera module 10, improving the operating stability of the camera module 10, and improving the imaging quality of the camera module 10.

[0026] It should be noted that in this embodiment and other embodiments, the number of lenses in the first lens group 1114 and the second lens group 1124 is not limited and can be adjusted according to actual needs. For example, when it is necessary to achieve a better light adjustment function, thereby improving the imaging quality of the lens assembly 110, the number of lenses in the first lens group 1114 and / or the second lens group 1124 can be increased; when it is necessary to reduce the load-bearing capacity of the structural member 140 and the driving member 130, thereby further reducing the volume of the camera module 10, improving the structural strength of the camera module 10 and the operating reliability of the driving member 130, the number of lenses in the first lens group 1114 and / or the second lens group 1124 can be reduced.

[0027] Further, in some embodiments, the number of lenses in the second lens group 1124 is greater than the number of lenses in the first lens group 1114. Thus, while reducing the load of the driving member 130, by moving a greater number of lenses to achieve focusing, the focusing difficulty of the lens assembly 110 can also be reduced, thereby facilitating the improvement of imaging quality; and, while configuring a greater number of lenses to improve imaging quality, the axial size of the first lens 1110 can also be limited, thereby avoiding excessive increase in the size of the structural member 140 and causing an increase in the volume of the camera module 10. For example, the first lens group 1114 may include two lenses, and the second lens group 1124 may include five lenses; or, the first lens group 1114 may include three lenses, and the second lens group 1124 may include four lenses. According to different actual needs, the number of lenses in the lens assembly 110 may also have other configurations, which will not be repeated here.

[0028] In some embodiments, the structural member 140 includes a first body 1410 and a first step portion 1411 protruding from the first body 1410 toward the first lens 1110, and the first step portion 1411 is connected to the inner side of the first body 1410. The first lens barrel 1111 includes a first body 1112 and a second step portion 1113 protruding from the first body 1112 toward the structural member 140, and the second step portion 1113 is connected to the outer side of the first body 1112. The first step portion 1411 is fixedly connected to the second step portion 1113, for example, the surfaces opposite to the first step portion 1411 and the second step portion 1113 are connected to each other. Specifically, in some embodiments, the surface of the first step portion 1411 perpendicular to the optical axis 1125 and facing the object side is connected to the surface of the second step portion 1113 perpendicular to the optical axis 1125 and facing the image side. The surface connection setting is conducive to increasing the connection area between the first lens barrel 1111 and the structural member 140, thereby improving the connection strength between the first lens barrel 1111 and the structural member 140. Of course, the connection method between the first step portion 1411 and the second step portion 1113 includes but is not limited to optical adhesive bonding, welding, etc.

[0029] Further, in some embodiments, the outer circumference of the first body 1112 is adapted to the inner circumference of the first step portion 1411, for example, the radial dimension of the inner circumference of the first step portion 1411 is slightly larger than the outer circumference of the first body 1112, or the outer circumference of the first body 1112 just abuts against the inner circumference of the first step portion 1411. In other words, the inner circumference of the first step portion 1411 is located outside the outer circumference of the first body 1112, and the outer circumference of the first body 1112 is located at the inner circumference of the first step portion 1411 at the upper limit of the radial direction. Thus, the first step portion 1411 can also limit the first lens barrel 1111 in the radial direction, preventing the first lens barrel 1111 from swinging or even detaching from the structural member 140, thereby further improving the structural strength of the camera module 10.

[0030] It should be noted that, in the present application, description of the inner side of an element can be understood as the side of the element facing the optical axis 1125, description of the outer side of an element can be understood as the side of the element facing away from the optical axis 1125, description of the inner circumferential surface of an element can be understood as the surface of the element facing the optical axis 1125, and description of the outer circumferential surface of an element can be understood as the surface of the element facing away from the optical axis 1125.

[0031] In some embodiments, the structural member 140 may further include a third step portion 1412 protruding from the first body 1410 toward the driving member 130, and the third step portion 1412 is located on the object side of the first step portion 1411. The camera module 10 may further include a protective cover 150, which is disposed on the structural member 140 and fixedly connected to the third step portion 1412, and the protective cover 150 may be located on the side of the first lens 1110 that is away from the second lens 1120. The protective cover 150 may be a glass plate, and the protective cover 150 is disposed on the object side of the lens assembly 110, which can protect the lens in the lens assembly 110 and prevent the lens in the lens assembly 110 from being damaged due to collision. Of course, the protective cover 150 can also cooperate with the first step portion 1411 to limit the first lens 1110 in the axial direction to prevent the first lens 1110 from being separated from the structural member 140, thereby further improving the structural stability of the camera module 10.

[0032] In some embodiments, the surface of the protective cover 150 facing away from the first lens 1110 is flush with the structural member 140 , which helps to shorten the axial size of the camera module 10 , thereby further compressing the volume of the camera module 10 .

[0033] In some embodiments, the structural member 140 is provided with a light-through hole 1414, and the first lens 1110 is at least partially accommodated in the light-through hole 1414. It can be understood that during the assembly process of the first lens 1110, the structural member 140 and the protective cover plate 150, the first lens 1110 can be first placed in the light-through hole 1414 so that the first step portion 1411 is connected to the second step portion 1113, and then the protective cover plate 150 is placed in the light-through hole 1414 so that the protective cover plate 150 is connected to the third step portion 1412. Therefore, through the reasonable design of the structure of the structural member 140, the assembly of the first lens 1110, the structural member 140 and the protective cover plate 150 is carried out in an orderly manner without interfering with each other. After the assembly is completed, the protective cover plate 150 and the structural member 140 can also provide effective bearing and limiting effects for the first lens 1110.

[0034] Combination Figure 1 and Figure 3 As shown, in some embodiments, the shortest distance from the first lens 1110 to the protective cover 150 is greater than or equal to 0.04 mm, that is, Figure 3 The dimension A shown is ≥ 0.04 mm, and the shortest distance from the first lens group 1114 to the protective cover 150 is also greater than or equal to 0.04 mm, that is, Figure 3 The dimension B shown is ≥ 0.04 mm, in other words, the shortest distance from the first lens 1110 to the protective cover 150 is greater than or equal to 0.04 mm. Therefore, there is a sufficient gap between the protective cover 150 and the first lens 1110, and the first lens 1110 and the protective cover 150 are not easy to collide during the assembly process of the protective cover 150, thereby effectively avoiding damage to the first lens 1110 and the protective cover 150.

[0035] In some embodiments, the first lens barrel 1111 further includes a stopper 1117 connected to the first body 1112, and the stopper 1117 is located on a side of the first lens group 1114 away from the second lens 1120, so as to axially stop the first lens group 1114. For example, the surface of the stopper 1117 facing the image side abuts against the first lens group 1114, thereby preventing the first lens group 1114 from being separated from the first lens barrel 1111 from the object side.

[0036] In some embodiments, the thickness of the stopper 1117 is greater than or equal to 0.15 mm. Figure 3 The dimension C shown is ≥ 0.15 mm, and the thickness of the second step portion 1113 is greater than or equal to 0.3 mm, that is, Figure 3 The dimension F shown is ≥ 0.3 mm, and the thickness of the first step portion 1411 is greater than or equal to 0.2 mm, that is, Figure 3 The dimension C shown is ≥ 0.2 mm. Therefore, the first lens barrel 1111 has sufficient structural strength to fix and protect the first lens group 1114, and the structural member 140 also has sufficient structural strength to bear the weight of the first lens 1110, thereby effectively improving the structural strength of the camera module 10.

[0037] In some embodiments, the first step portion 1411 and the second step portion 1113 are bonded together by optical glue or opaque glue, and the width of the bonded portion of the first step portion 1411 and the second step portion 1113 is greater than or equal to 0.2 mm, that is, Figure 3 The dimension D shown is ≥ 0.2 mm. When the shape of the adhesion portion of the first step portion 1411 and the second step portion 1113 is irregular, the minimum width of the adhesion portion of the first step portion 1411 and the second step portion 1113 is greater than or equal to 0.2 mm. As a result, there is enough adhesion area between the first step portion 1411 and the second step portion 1113, which can improve the connection strength between the first lens 1110 and the structural member 140, thereby improving the structural strength of the camera module 10.

[0038] Please see again Figure 1In some embodiments, the structural member 140 further includes a fourth step portion 1413 protruding from the first body 1410 toward the driving member 130, and the fourth step portion 1413 is connected to the image side of the first body 1410. The driving member 130 is located on the inner side of the fourth step portion 1413, and the inner circumference of the fourth step portion 1413 is adapted to the outer circumference of the driving member 130, for example, the inner circumference of the fourth step portion 1413 is slightly larger in radial dimension than the outer circumference of the driving member 130, or, when the driving member 130 moves along the optical axis 1125 to the position of being embedded in the structural member 140, the outer circumference of the driving member 130 is just fitted with the inner circumference of the fourth step portion 1413. In other words, the outer circumference of the driving member 130 is located at the inner circumference of the fourth step portion 1413 at the upper limit of the radial direction. Therefore, the structural member 140 can also limit the driving member 130 in the radial direction to prevent the driving member 130 from deviating from the optical axis 1125, thereby further improving the operating stability of the camera module 10.

[0039] It should be noted that, in the present application, the axial direction of a certain element may be understood as a direction parallel to the optical axis 1125 , and the radial direction of a certain element may be understood as a direction perpendicular to the optical axis 1125 .

[0040] Further, in Figure 1 In the illustrated embodiment, the first lens group 1114 includes a first lens 1115 and a second lens 1116 in sequence from the object side to the image side along the optical axis 1125, and the aperture of the first lens 1115 is smaller than the aperture of the second lens 1116. In other embodiments, the first lens 1115 is the lens closest to the object side in the first lens group 1114, and the first lens 1115 has a negative optical power, and the aperture of the first lens 1115 is larger than the apertures of the remaining lenses in the lens assembly 110. It can be understood that when the lens assembly 110 achieves a wide-angle and large-image effect, the first lens 1115 needs to have a sufficiently strong light collection ability, so the aperture of the first lens 1115 in the wide-angle and large-image lens assembly 110 is usually the largest, resulting in a large volume and weight of the first lens 1115. The camera module 10 of the present application carries the weight of the first lens 1115 through the structural member 140. Even if the volume and weight of the first lens 1115 increase, the volume and load of the driving member 130 will not increase, so that the camera module 10 can adapt to the wide-angle and large-image-surface lens assembly 110, and can also have a small volume and high operating stability when configuring the wide-angle and large-image-surface lens assembly 110.

[0041] In some embodiments, the second lens barrel 1121 includes a second body 1122 and a fifth step portion 1123 protruding from the second body 1122 to the driving member 130, and the fifth step portion 1123 is connected to the outer side of the second body 1122. The driving member 130 includes a second body 1310 and a transmission portion 1311 arranged inside the second body 1310, and the fifth step portion 1123 is fixedly connected to the transmission portion 1311. For example, the fifth step portion 1123 is connected to the surface opposite to the transmission portion 1311. Specifically, in some embodiments, the surface of the fifth step portion 1123 perpendicular to the optical axis 1125 and facing the image side is connected to the surface of the transmission portion 1311 perpendicular to the optical axis 1125 and facing the object side. The surface connection setting can also increase the connection strength between the second lens barrel 1121 and the driving member 130, thereby further improving the structural strength and operation reliability of the camera module 10. Of course, the connection method of the fifth step portion 1123 and the transmission portion 1311 includes but is not limited to gluing, welding, etc.

[0042] It should be noted that the description of the transmission part 1311 being arranged on the second body 1310 can be understood as the transmission part 1311 being able to move relative to the second body 1310. For example, the transmission part 1311 can move along the optical axis 1125 under the drive of the second body 1310, thereby driving the second lens 1120 to move toward or away from the first lens 1110.

[0043] In some embodiments, the inner circumference of the transmission part 1311 is adapted to the outer circumference of the second body 1122. For example, the radial dimension of the inner circumference of the transmission part 1311 is slightly larger than the radial dimension of the outer circumference of the second body 1122, or the outer circumference of the second body 1122 just abuts against the inner circumference of the transmission part 1311. In other words, the inner circumference of the transmission part 1311 is located outside the outer circumference of the second body 1122, and the outer circumference of the second body 1122 is located at the inner circumference of the transmission part 1311 at the upper limit of the radial direction. Thus, the driving member 130 can limit the second lens 1120 in the radial direction, and cooperate with the mutual limiting effect of the fifth step portion 1123 and the transmission part 1311 in the axial direction, which is conducive to preventing the second lens 1120 from deviating in the driving member 130 or even detaching from the driving member 130, thereby further improving the structural strength and operation reliability of the camera module 10.

[0044] In some embodiments, the photosensitive chip 120 is disposed on the side of the second lens 1120 facing away from the first lens 1110, and the photosensitive chip 120 is relatively fixed to the first lens 1110. In other words, during the use or focusing process of the camera module 10, the imaging surface of the first lens 1110 and the lens assembly 110 is relatively fixed, and the driving member 130 drives the second lens 1120 to move between the first lens 1110 and the photosensitive chip 120 to achieve the focusing function of the lens assembly 110. Thus, while reducing the load of the driving member 130, the lens assembly 110 can also be combined with the internal focusing function, and the distance between the first lens 1110 and the photosensitive chip 120 will not change during the focusing process. In other words, the total optical length of the lens assembly 110 will not change, and the position of the first lens 1110 does not need to be adjusted during the focusing process, and there is no need to reserve a moving space for the first lens 1110 at the structural member 140, which is conducive to further shortening the volume of the camera module 10 and avoiding the mutual influence between the first lens 1110 and the structural member 140 during the focusing process. At the same time, the focusing process occurs inside the camera module 10, which can also prevent the first lens 1110 from protruding out of the structural member 140 and interfering with the external structure during the focusing process. It should be noted that the total optical length of the lens assembly 110 is the distance from the object side of the first lens 1115 to the imaging surface of the lens assembly 110 on the optical axis 1125.

[0045] Those skilled in the art will understand that Figure 1 and Figure 2 The structure of the camera module 10 shown in the figure does not constitute a limitation on the camera module 10. The camera module 10 may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. For example, in some embodiments, a spacer, a spacer ring or the like may be provided between the lenses of the first lens group 1114 and between the lenses of the second lens group 1124 to separate the lenses and prevent the lenses from colliding with each other and being damaged. In some embodiments, the first lens group 1114 and / or the second lens group 1124 may also be provided with elements such as a diaphragm and an aperture to limit the light aperture of the lens assembly 110. In some embodiments, the camera module 10 may also include a filter 160, which may be provided between the second lens 1120 and the photosensitive chip 120. The filter 160 is used to filter out interference light to prevent interference light from entering the photosensitive chip 120 and affecting normal imaging. Specifically, when the camera module 10 is used for visible light imaging, the filter 160 can be an infrared cutoff filter. When the camera module 10 is used for infrared light imaging, such as in the security field or three-dimensional detection field, the filter 160 can be an infrared bandpass filter.

[0046] For reference Figure 1 and Figure 4 , Figure 4A schematic diagram of the structure of a terminal device 20 provided in some embodiments of the present application. In some embodiments, the terminal device 20 may include a housing 210 and the camera module 10 described in any of the above embodiments, and the structural member 140 of the camera module 10 is connected to the housing 210, so that the camera module 10 is installed on the housing 210. Specifically, when the camera module 10 is applied to the rear camera of the terminal device 20, the housing 210 may be the back cover of the terminal device 20. The structural member 140 may be a decorative element of the terminal device 20, for example, the structural member 140 achieves a decorative effect of the housing 210 by being different from the color, shape or pattern of the housing 210. Combining the structural member 140 of the camera module 10 with the decorative element of the terminal device 20 is conducive to compressing the volume of the terminal device 20. At the same time, when the above-mentioned camera module 10 is adopted in the terminal device 20 and a wide-angle, large-image-surface lens assembly 110 is configured, the camera module 10 can also have the advantages of small size and high operational reliability, thereby reducing the space occupied by the camera module 10 in the terminal device 20 and avoiding the focusing of the lens assembly 110 from affecting the operational reliability of the terminal device 20.

[0047] Further, in some embodiments, the fourth step portion 1413 of the structural member 140 is fixedly connected to the housing 210 to achieve relative fixation of the structural member 140 and the housing 210. For example, the fourth step portion 1413 is connected to the surface opposite to the housing 210. Specifically, in some embodiments, the surface of the fourth step portion 1413 perpendicular to the optical axis 1125 and facing the object side is connected to the surface of the housing 210 perpendicular to the optical axis 1125 and facing the image side. Thus, the connection strength between the structural member 140 and the housing 210 can be improved, thereby improving the structural strength of the camera module 10. At the same time, it can be seen that the above-mentioned camera module 10 integrates the structure of the structural member 140 for limiting the first lens 1110 in the axial and radial directions on the first step portion 1411, and integrates the limiting structure of the driving member 130 and the connection structure of the housing 210 on the fourth step portion 1413. The structure has a high degree of integration and can effectively compress the volume of the camera module 10.

[0048] In some embodiments, the outer circumference of the first body 1410 of the structural member 140 is adapted to the inner circumference of the housing 210. For example, the radial dimension of the inner circumference of the housing 210 is slightly larger than the outer circumference of the first body 1410, or the outer circumference of the first body 1410 just abuts against the inner circumference of the housing 210. In other words, the inner circumference of the housing 210 is located outside the outer circumference of the first body 1410, and the outer circumference of the first body 1410 is located at the inner circumference of the housing 210 at the upper limit of the radial direction. Thus, the housing 210 can also limit the structural member 140 in the radial direction, thereby further improving the structural stability of the camera module 10.

[0049] In some embodiments, the photosensitive chip 120 of the camera module 10 can be a charge coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS sensor). The terminal device 20 may also include a display panel, and the photosensitive chip 120 is electrically connected to the display panel, so that the image collected by the camera module 10 is displayed on the display panel.

[0050] Those skilled in the art will understand that Figure 4 The structure of the terminal device 20 shown in the figure does not constitute a limitation on the terminal device 20, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0051] As used herein, the term "terminal device 20" refers to a device capable of receiving and / or sending communication signals, including but not limited to a device connected via any one or more of the following connection modes:

[0052] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0053] (2) Via wireless interfaces, such as cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

[0054] The terminal device 20 configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0055] (1) Satellite phone or cellular phone;

[0056] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0057] (3) Radiotelephone, pager, Internet / intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0058] (4) conventional laptop and / or palmtop receivers;

[0059] (5) Conventional laptop and / or palmtop radio telephone transceivers, etc.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A camera module, characterized in that: include: Structural parts; A lens assembly, comprising a first lens and a second lens, wherein the first lens is fixed to the structural member, the second lens comprises a second lens barrel and a second lens group disposed in the second lens barrel, the first lens comprises a first lens barrel and a first lens group disposed in the first lens barrel, the number of lenses in the second lens group is greater than the number of lenses in the first lens group, the first lens group comprises a first lens closest to the object side, the first lens has a negative optical power, and the aperture of the first lens is greater than the aperture of the remaining lenses in the lens assembly; A driving member, the driving member comprising a second body and a transmission part disposed on the second body, the second lens barrel being connected to the transmission part, and the transmission part being able to move relative to the second body along the optical axis toward or away from the structural member; and The photosensitive chip is arranged on a side of the second lens facing away from the first lens, and the photosensitive chip is relatively fixed to the first lens.

2. The camera module according to claim 1, characterized in that: The structural member is provided with a first body and a first step portion protruding from the first body toward the first lens, the first lens barrel includes a first main body and a second step portion protruding from the first main body toward the structural member, and the first step portion is connected to the second step portion.

3. The camera module according to claim 2, characterized in that: It also includes a protective cover, and the structural member also includes a third step portion protruding from the first body back to the driving member, and the protective cover is connected to the third step portion and is located on the side of the first lens back to the second lens.

4. The camera module according to claim 3, characterized in that: The distance from the first lens barrel to the protective cover is greater than or equal to 0.04 mm; The distance from the first lens group to the protective cover is greater than or equal to 0.04 mm.

5. The camera module according to claim 3, characterized in that: The surface of the protection cover facing away from the first lens is flush with the structural component.

6. The camera module according to claim 2, characterized in that: The first lens barrel further includes a limiting portion connected to the first main body, the limiting portion is located on a side of the first lens group away from the second lens, and a thickness of the limiting portion is greater than or equal to 0.15 mm.

7. The camera module according to claim 2, characterized in that: The thickness of the second step portion is greater than or equal to 0.3 mm; The thickness of the first step portion is greater than or equal to 0.2 mm.

8. The camera module according to claim 2, characterized in that: The first step portion is adhered to the second step portion.

9. The camera module according to claim 2, characterized in that: A width of a bonding portion between the first step portion and the second step portion is greater than or equal to 0.2 mm.

10. The camera module according to claim 2, characterized in that: The inner circumferential surface of the first step portion is located outside the outer circumferential surface of the first body, and the outer circumferential surface of the first body is located at the inner circumferential surface of the first step portion at the upper limit in the radial direction.

11. The camera module according to claim 1, characterized in that: The number of lenses in the first lens group is greater than or equal to 1 and less than or equal to 4.

12. The camera module according to claim 2, characterized in that: The structural member further includes a fourth step portion protruding from the first body toward the driving member, the driving member is located inside the fourth step portion, and the outer circumferential surface of the driving member is located at the inner circumferential surface of the fourth step portion at a radial upper limit.

13. The camera module according to claim 1, characterized in that: The number of lenses in the second lens group is greater than or equal to 1 and less than or equal to 7.

14. A terminal device, characterized in that: It comprises a shell and a camera module as described in any one of claims 1 to 13, wherein the structural parts of the camera module are connected to the shell.

15. The terminal device according to claim 14, characterized in that: The structural component is at least partially exposed from the shell, and the color, shape and / or surface pattern of the structural component are different from those of the shell.

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