Reflection module and camera module thereof

Abstract

The invention discloses a reflection module and a camera module thereof, and the reflection module comprises a reflection element which comprises a reflection surface and a matching surface, and the reflection surface is used for reflecting light transmitted along a first optical axis to be transmitted along a second optical axis; the movable carrier is used for bearing the reflecting element; the reinforcing piece is arranged between the reflecting element and the movable carrier so that the reflecting element can be fixed to the movable carrier, the reinforcing piece comprises a first fixing part, a second fixing part and a partition gap which are integrally formed, the first fixing part is used for being fixedly connected with the movable carrier, and the second fixing part is used for being fixedly connected with the matching face of the reflecting element; the first fixing part is located on the peripheral side of the second fixing part, and in the thickness direction of the reflection element, the projection of the fixed connection area of the first fixing part and the movable carrier and the projection of the fixed connection area of the second fixing part and the matching face are arranged in a staggered mode. The partition gap is located on the inner side of the first fixing part so as to isolate the first fixing part from the reflecting element.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, and in particular to a reflection module and a camera module thereof. Background Art

[0002] The camera module is an indispensable part of mobile electronic devices. With the further development of camera module technology, users' demands for camera modules have become more and more refined. Periscope camera modules usually need to realize complex light reflection and turning in a limited space to achieve high-magnification zoom function. Therefore, the stability and reliability of the reflection module are crucial to the performance of the entire periscope camera module. If the reflective element of the reflection module is deformed when subjected to external force, it will make it difficult for the light to propagate along the expected path, resulting in increased aberrations; uneven deformation will also cause light at different positions to shift to varying degrees, resulting in bending of the image field.

[0003] In the related art, the reflective element of the periscope camera module is usually fixed to the movable carrier by bonding. However, during the thermal curing process of the adhesive, the thermal deformation of the movable carrier will affect the reflective element, causing the reflective surface of the reflective element to deform, resulting in a large deviation between the propagation path of the light and the expected path, thereby reducing the imaging quality of the camera module. Summary of the invention

[0004] An object of the present invention is to provide a reflection module, which is helpful to avoid deformation of the reflection element when it is fixed to a movable carrier, so as to improve the stability and reliability of the reflection module.

[0005] Another object of the present invention is to provide a camera module having the above-mentioned reflection module.

[0006] To achieve at least one of the above purposes, the technical solution adopted by the present invention is: a reflection module, comprising: a reflection element, the reflection element comprising a reflection surface and a matching surface, the reflection surface is used to reflect light propagating along a first optical axis to propagate along a second optical axis; a movable carrier, used to carry the reflection element; a reinforcement member, the reinforcement member is arranged between the reflection element and the movable carrier, so that the reflection element is fixed to the movable carrier, the reinforcement member comprises an integrally formed first fixing portion, a second fixing portion and a partition gap, the first fixing portion is used to be fixedly connected to the movable carrier, the second fixing portion is used to be fixedly connected to the matching surface of the reflection element, the first fixing portion is located on the outer peripheral side of the second fixing portion, and in the thickness direction of the reflection element, the projection of the fixing area of ​​the first fixing portion and the movable carrier and the projection of the fixing area of ​​the second fixing portion and the matching surface are staggered; the partition gap is located on the inner side of the first fixing portion, so that the partition gap is arranged between the first fixing portion and the second fixing portion, or is arranged on the second fixing portion, so as to isolate the first fixing portion from the reflection element.

[0007] Preferably, along the thickness direction of the reflective element, a first gap is provided between the reinforcement and the movable carrier, and a second gap is provided between the reinforcement and the mating surface, and along the thickness direction of the reflective element, a projection of the first gap and a projection of the second gap are staggered.

[0008] Preferably, the first fixing portion and the second fixing portion extend in the same plane, the first fixing portion is bonded to the movable carrier via a first adhesive, and the first gap is located in the middle of the first adhesive; the second fixing portion is bonded to the mating surface via a second adhesive, defining the second gap between the reinforcement and the mating surface, and the second gap is located at the periphery of the second adhesive, so that the projection of the first gap and the projection of the second gap are staggered.

[0009] Preferably, the partition gap penetrates the reinforcement member along the thickness direction of the reinforcement member, the partition gap is arranged around the second fixing portion, and is located between the first fixing portion and the second fixing portion; the first fixing portion is suitable for being fixedly connected to the movable carrier, and the second fixing portion is suitable for being fixedly connected to the mating surface.

[0010] Preferably, the partition gap includes a plurality of partition areas arranged at intervals, and the partition areas are distributed at intervals on the periphery of the second fixing portion to separate the first fixing portion from the second fixing portion.

[0011] Preferably, the partition gap comprises a plurality of partition areas arranged at intervals, at least some of the partition areas are distributed at intervals on the second fixed portion, and along the thickness direction of the reflective element, the center of the projection area of ​​the mating surface on the reinforcement is defined as a central area, the area of ​​the central area is 20% to 30% of the total area of ​​the projection area, and the central area at least partially overlaps with the partition area.

[0012] As a preferred embodiment, each of the partition areas extends along the second direction, and each of the partition areas is spaced apart along the first direction. The size of the partition area along the first direction is recorded as X1, the distance between two adjacent partition areas is recorded as X2, and the distance from the partition area closest to the short side of the reinforcement to the short side of the reinforcement is recorded as X3, X2 satisfies: 3X1≤X2≤6X1, or 0.5mm≤X2≤2mm, or 0.05X≤X2≤0.2X; X3 satisfies: X3≥X2; or, each of the partition areas extends along the first direction, and each of the partition areas is spaced apart along the second direction, The size of the partition area along the first direction is recorded as Y1, the distance between two adjacent partition areas is recorded as Y2, and the distance from the partition area closest to the short side of the reinforcement to the short side of the reinforcement is recorded as Y3, Y2 satisfies: 3Y1≤Y2≤6Y1, or 0.5mm≤Y2≤2mm, or 0.06Y≤Y2≤0.25Y; Y3 satisfies: Y3≥Y2; wherein X is the size of the mating surface of the reflective element along the first direction, Y is the size of the mating surface along the second direction, the first direction is parallel to the long side of the reinforcement, and the second direction is parallel to the short side of the reinforcement.

[0013] As a preference, each of the partition areas is circular, and at least a portion of the partition areas are arrayed on the second fixing portion.

[0014] Preferably, the reinforcement member further includes a supporting portion, which is capable of connecting the first fixing portion and the second fixing portion so that the plane where the first fixing portion is located is skewed and parallel to the plane where the second fixing portion is located, and in the thickness direction of the reinforcement member, the projection of the first fixing portion and the projection of the second fixing portion do not overlap, and the partition gap is arranged around the edge of the second fixing portion; the first fixing portion is bonded to the movable carrier through a first adhesive; and the second fixing portion is bonded to the mating surface through a second adhesive.

[0015] As a preferred embodiment, the movable carrier includes a carrier mounting wall, a first carrier side wall and a second carrier side wall, the carrier mounting wall is inclined to define a mounting surface on the surface of the carrier mounting wall facing the reflective element, the mounting surface is suitable for being bonded and fixed to the first fixing portion, the first carrier side wall and the second carrier side wall are located on opposite sides of the carrier mounting wall at intervals along a third axis direction, and a accommodating cavity is formed between the first carrier side wall, the second carrier side wall and the mounting surface, and the accommodating cavity is used to accommodate the reflective element.

[0016] As a preference, the thickness of the reinforcement is denoted as H, the thickness of the carrier mounting wall is denoted as L, and the thickness of the reflective element is denoted as T, satisfying: L≤H≤T.

[0017] Preferably, the reinforcement member also includes an interlocking portion, which is bent and extended from the first fixed portion toward the movable carrier and embedded in the movable carrier, and at least part of the first fixed portion is embedded in the movable carrier so that the first fixed portion and the movable carrier are interlocked, and the second fixed portion is bonded to the mating surface via a second adhesive.

[0018] As a preferred embodiment, the movable carrier includes a carrier bottom wall, a first carrier side wall, a second carrier side wall and a carrier back wall, the carrier bottom wall is arranged perpendicular to the first optical axis, the first carrier side wall and the second carrier side wall are located on opposite sides of the carrier bottom wall along the third axis direction, and the carrier back wall connects the first carrier side wall and the second carrier side wall; the reinforcement is obliquely arranged between the first carrier side wall and the second carrier side wall, the second fixing portion of the reinforcement is spaced apart from the carrier bottom wall along the first optical axis direction, the second fixing portion of the reinforcement is spaced apart from the carrier back wall along the second optical axis direction, and the engaging portion of the reinforcement is embedded in at least one of the carrier bottom wall, the first carrier side wall, the second carrier side wall and the carrier back wall, wherein the third axis is perpendicular to the first optical axis and the second optical axis.

[0019] As a preference, the reflective module satisfies at least one of the following conditions: the area of ​​the first fixed part is denoted as N1, the area of ​​the second fixed part is denoted as N2, and the following conditions are satisfied: N1≥0.5N2; the area of ​​the mating surface of the reflective element is denoted as M, the area of ​​the mating surface bonded to the second fixed part is denoted as M1, 0.3M≤M1≤0.7M; the thermal expansion coefficient of the reflective element is denoted as C1, the thermal expansion coefficient of the reinforcement is denoted as C2, 0.25C2≤C1≤0.75C2.

[0020] Preferably, the reflection module further comprises a bracket, a first lens and a second lens, the bracket being fixed to the movable carrier so as to be suitable for moving synchronously with the movable carrier, the first lens being carried by the bracket so as to be arranged opposite to the reflection element along the first optical axis, and the second lens being carried by the bracket so as to be arranged opposite to the reflection element along the second optical axis.

[0021] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: a camera module, comprising: a reflection module as described in any one of the above; a lens module, the lens module is held on the light reflection path of the reflection module; and an imaging module, the imaging module receives the light emitted by the lens module for imaging; a base, the base has a accommodating cavity, the reflection module and the lens module are arranged in the accommodating cavity; a shell, the shell cover is arranged on the base.

[0022] Compared with the prior art, the present invention has the following beneficial effects: (1) The first fixing portion of the reinforcement is fixedly connected to the movable carrier, and the second fixing portion is fixedly connected to the mating surface of the reflective element. The partition gap is located on the inner side of the first fixing portion, that is, the partition gap is arranged between the first fixing portion and the second fixing portion, or is arranged on the second fixing portion, so as to isolate the first fixing portion and the reflective element. When the movable carrier is heated, the force generated by the deformation of the movable carrier will be applied to the first fixing portion. Furthermore, the stress can be absorbed by the first fixing portion and the second fixing portion. The partition gap is helpful to further avoid the stress from being transmitted to the reflective element, thereby reducing the influence of the force generated by the deformation of the movable carrier on the reflective element, which is helpful to improve the reliability and stability of the reflective module.

[0023] (2) In particular, when the first fixing part is fixedly connected to the movable carrier by an adhesive, and the second fixing part is fixedly connected to the matching surface of the reflective element by an adhesive, the projection of the fixing area of ​​the first fixing part and the movable carrier and the projection of the fixing area of ​​the second fixing part and the matching surface are staggered, that is, the projection of the fixing area of ​​the first fixing part and the movable carrier and the projection of the fixing area of ​​the second fixing part and the matching surface do not overlap, which is conducive to avoiding the accumulation of curing stress of the adhesive in the thickness direction of the reflective element. Furthermore, in the direction parallel to the matching surface, the curing stress of the adhesive can be dispersed by the partition gap, which is also conducive to avoiding the accumulation of curing stress, so as to further improve the reliability and stability of the reflective module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an exploded diagram of a reflection module according to some embodiments of the present application.

[0025] Figure 2It is a schematic diagram of bonding the reflective element, the reinforcement and the movable carrier according to some embodiments of the present application.

[0026] Figure 3 is a cross-sectional view of a reflection module according to some embodiments of the present application.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of a reinforcement member according to some embodiments of the present application.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of reinforcement members according to other embodiments of the present application.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of reinforcement members according to other embodiments of the present application.

[0030] Figure 7 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 1 of the present application.

[0031] Figure 8 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 2 of the present application.

[0032] Fig. 9 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 3 of the present application.

[0033] Fig.10 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 4 of the present application.

[0034] Fig.11 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 5 of the present application.

[0035] Fig.12 It is a schematic diagram of another partition area setting of the reinforcement member according to Example 5 of the present application.

[0036] Fig.13 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 6 of the present application.

[0037] Fig.14 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 7 of the present application.

[0038] Fig.15 It is a schematic diagram of another partition area setting of the reinforcement member according to Example 7 of the present application.

[0039] Fig.16 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 8 of the present application.

[0040] Fig.17 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 9 of the present application.

[0041] Fig.18 It is a schematic diagram of another partition area setting of the reinforcement member according to Example 9 of the present application.

[0042] Fig.19 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 10 of the present application.

[0043] Fig. 20 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 11 of the present application.

[0044] Fig.21 It is a schematic diagram of the partition area setting of the reinforcement member according to Example 12 of the present application.

[0045] Fig. 22 It is a schematic diagram of the three-dimensional structure of the reinforcement according to Example 13 of the present application.

[0046] Fig.23 It is a schematic diagram of the three-dimensional structure of the reinforcement according to Example 14 of the present application.

[0047] Fig.24 It is a schematic diagram of the three-dimensional structure of the reinforcement according to Example 15 of the present application.

[0048] Fig.25 It is a schematic diagram of the three-dimensional structure of another reinforcement member according to Example 15 of the present application.

[0049] Fig.26 is a cross-sectional view of a camera module according to some embodiments of the present application.

[0050] In the figure: 1, reflection module; 10, reflection element; 11, reflection surface; 12, matching surface; 20, movable carrier; 21, carrier mounting wall; 211, mounting surface; 22, first carrier side wall; 23, second carrier side wall; 24, carrier bottom wall; 25, carrier back wall; 26, accommodating cavity; 30, reinforcement; 31, first fixing part; 32, second fixing part; 33, partition gap; 331, partition area; 34, support part; 35, embedding 1. a first engaging portion; 351. a first engaging portion; 352. a second engaging portion; 353. a third engaging portion; 41. a first gap; 42. a second gap; 51. a first adhesive member; 52. a second adhesive member; 60. a bracket; 71. a first lens; 72. a second lens; 2. a camera module; 81. a lens module; 811. a first lens group; 812. a second lens group; 82. an imaging module; 91. a base; 911. a receiving cavity; 92. a shell. DETAILED DESCRIPTION

[0051] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0052] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0054] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0055] A reflection module 1, such as Figure 1-Figure 25As shown, it includes: a reflective element 10, a movable carrier 20 and a reinforcement member 30. The reflective element 10 includes a reflective surface 11 and a mating surface 12, and the reflective surface 11 is used to reflect the light propagating along the first optical axis OA1 to propagate along the second optical axis OA2. The movable carrier 20 is used to carry the reflective element 10 to drive the reflective element 10 to rotate around an axis parallel to the first optical axis OA1, or around an axis parallel to the second optical axis OA2, or around a third axis A3, wherein the third axis A3 is perpendicular to the first optical axis OA1 and the second optical axis OA2. The reinforcement member 30 is arranged between the reflective element 10 and the movable carrier 20, so that the reflective element 10 is fixed to the movable carrier 20. The reinforcement member 30 includes an integrally formed first fixing portion 31, a second fixing portion 32 and a partition gap 33. The first fixing portion 31 is used to be fixedly connected to the movable carrier 20, and the second fixing portion 32 is used to be fixedly connected to the mating surface 12 of the reflective element 10. The first fixing portion 31 is located on the outer peripheral side of the second fixing portion 32, and in the thickness direction of the reflective element 10, the projection of the fixing area of ​​the first fixing portion 31 and the movable carrier 20 and the projection of the fixing area of ​​the second fixing portion 32 and the mating surface 12 are staggered; the partition gap 33 is located on the inner side of the first fixing portion 31, so that the partition gap 33 is arranged between the first fixing portion 31 and the second fixing portion 32, or is arranged on the second fixing portion 32, so as to isolate the first fixing portion 31 from the reflective element 10.

[0056] Specifically, during the manufacture and use of the reflective module 1, the reflective element 10 and the movable carrier 20 may expand and contract due to heat. For example, when the reflective element 10 is fixed to the movable carrier 20 by an adhesive, if ultraviolet light curing glue is used, the reflective surface 11 of the reflective element 10 will reflect the ultraviolet light, making it difficult for the ultraviolet light to irradiate between the reflective element 10 and the movable carrier 20, and the bonding strength of the ultraviolet light curing glue is low. Therefore, a heat curing glue is usually used to bond the reflective element 10 to the movable carrier 20. It should be understood that the movable carrier 20 needs to be heated during the heat curing process, thereby causing the movable carrier 20 and the reflective element 10 to expand and contract. For another example, the drive coil in the drive assembly used to drive the movable carrier 20 to move will generate heat when energized, and the heat will also be transferred to the movable carrier 20, thereby causing the movable carrier 20 and the reflective element 10 to expand and contract.

[0057] Furthermore, since the reflective element 10 and the movable carrier 20 have different thermal expansion coefficients, the degree of deformation of the reflective element 10 and the movable carrier 20 is also different during the heating and cooling process, that is, when the temperature changes. If the reflective element 10 is directly bonded to the movable carrier 20, stress may be generated between the reflective element 10 and the movable carrier 20, thereby causing the reflective surface 11 of the reflective element 10 to deform, such as the reflective surface 11 being convex, concave, or unevenly deformed, making it difficult for the light reflected by the reflective surface 11 to propagate along the expected path, resulting in a reduction in the imaging quality of the camera module 2.

[0058] In this embodiment, the first fixing portion 31 of the reinforcement member 30 is fixedly connected to the movable carrier 20, the second fixing portion 32 is fixedly connected to the mating surface 12 of the reflective element 10, and the partition gap 33 is located on the inner side of the first fixing portion 31, that is, the partition gap 33 is arranged between the first fixing portion 31 and the second fixing portion 32, or arranged on the second fixing portion 32, so as to play the role of isolating the first fixing portion 31 and the reflective element 10, and then when the movable carrier 20 is heated, the force generated by the deformation of the movable carrier 20 will be applied to the first fixing portion 31. Further, the stress can be absorbed by the first fixing portion 31 and the second fixing portion 32, and the partition gap 33 is conducive to further avoiding the stress from being transmitted to the reflective element 10, so as to reduce the influence of the force generated by the deformation of the movable carrier 20 on the reflective element 10, and reduce the deformation of the reflective surface 11, so as to keep the reflective surface 11 in the expected surface shape, and thus to improve the reliability and stability of the reflective module 1.

[0059] In particular, when the first fixing portion 31 is fixedly connected to the movable carrier 20 by an adhesive, and the second fixing portion 32 is fixedly connected to the mating surface 12 of the reflective element 10 by an adhesive, the projection of the fixing area of ​​the first fixing portion 31 and the movable carrier 20 and the projection of the fixing area of ​​the second fixing portion 32 and the mating surface 12 are staggered. In other words, the projection of the fixing area of ​​the first fixing portion 31 and the movable carrier 20 and the projection of the fixing area of ​​the second fixing portion 32 and the mating surface 12 do not overlap, which is conducive to avoiding the accumulation of the curing stress of the adhesive in the thickness direction of the reinforcement 30. Furthermore, in the direction parallel to the mating surface 12, the curing stress of the adhesive can be dispersed by the partition gap 33, which is also conducive to avoiding the accumulation of curing stress, so as to further improve the reliability and stability of the reflective module 1.

[0060] It should be understood that the first fixing portion 31 is located on the outer peripheral side of the second fixing portion 32, which is beneficial to increasing the area of ​​the first fixing portion 31, that is, it is beneficial to increase the area on the first fixing portion 31 used for fixing to the movable carrier 20, thereby improving the connection strength and connection reliability between the reinforcement 30 and the movable carrier 20.

[0061] It is worth mentioning that Figure 2 As shown, the area of ​​the mating surface 12 of the reflective element 10 can be larger than the area of ​​the second fixing portion 32, that is, in the height direction of the reflective element 10, the projection of the mating surface 12 can extend to the first fixing portion 31 of the reinforcement 30, so as to make full use of the space in the reflective module 1, so that the structure between the reflective element 10, the reinforcement 30 and the movable carrier 20 is more compact, and the volume of the reflective element 10 is increased while ensuring that the overall size of the reflective module 1 is small, which is beneficial to increase the area of ​​the reflective surface 11, increase the amount of light entering the camera module 2, and reduce light loss.

[0062] In some embodiments, Figure 2 As shown, along the thickness direction of the reflective element 10, there is a first gap 41 between the reinforcement 30 and the movable carrier 20, and there is a second gap 42 between the reinforcement 30 and the mating surface 12. Along the thickness direction of the reflective element 10, the projection of the first gap 41 and the projection of the second gap 42 are staggered.

[0063] It should be understood that the first gap 41 provides deformation space for the reinforcement member 30 and the movable carrier 20. Specifically, on the reinforcement member 30, except for the portion of the first fixing portion 31 that is fixedly connected to the movable carrier 20, the first gap 41 is provided between the other portions of the reinforcement member 30 and the movable carrier 20, so that when the reinforcement member 30 and the movable carrier 20 are deformed due to temperature changes, it is helpful to avoid contact between the reinforcement member 30 and the movable carrier 20 to cause stress transfer.

[0064] Similarly, the second gap 42 provides deformation space for the reinforcement member 30 and the reflective element 10. Specifically, on the reinforcement member 30, except for the portion of the second fixing portion 32 fixedly connected to the mating surface 12, the second gap 42 is provided between the other portions of the reinforcement member 30 and the reflective element 10, so that when the reinforcement member 30 and the reflective element 10 are deformed due to temperature changes, it is helpful to avoid the stress transfer caused by contact between the reinforcement member 30 and the reflective element 10.

[0065] Furthermore, along the thickness direction of the reflective element 10, the projection of the fixing area between the first fixing portion 31 and the movable carrier 20 and the projection of the fixing area between the second fixing portion 32 and the mating surface 12 do not overlap, so that the projections of the first gap 41 and the second gap 42 are staggered. In other words, the projection positions of the first gap 41 and the second gap 42 do not completely overlap, which is conducive to making the stress on the reinforcement 30 more dispersed, reducing stress concentration, and preventing fatigue damage of the reinforcement 30, thereby extending the service life of the reinforcement 30.

[0066] In some embodiments, Figure 1 and Figure 2 As shown, the first fixing portion 31 and the second fixing portion 32 extend in the same plane, the first fixing portion 31 is bonded to the movable carrier 20 through the first adhesive 51, and the first gap 41 is located in the middle of the first adhesive 51; the second fixing portion 32 is bonded to the mating surface 12 through the second adhesive 52, defining the second gap 42 between the reinforcement 30 and the mating surface 12, and the second gap 42 is located at the periphery of the second adhesive 52, so that the projection of the first gap 41 and the projection of the second gap 42 are staggered.

[0067] Specifically, the first fixing portion 31 is bonded to the movable carrier 20 by adhesive, thereby forming a first adhesive member 51 between the first fixing portion 31 and the movable carrier 20; the second fixing portion 32 is bonded to the mating surface 12 by adhesive, thereby forming a second adhesive member 52 between the second fixing portion 32 and the mating surface 12.

[0068] It should be understood that the first adhesive member 51 has a certain height, so that the first gap 41 is formed between the reinforcing member 30 and the movable carrier 20. In combination with the above, the first fixing portion 31 is located on the outer peripheral side of the second fixing portion 32, and thus, the second gap 42 is located in the middle of the first adhesive member 51. That is to say, along the thickness direction of the reflective element 10, the projection of the second fixing portion 32 falls within the area surrounded by the projection of the first adhesive member 51, and the projection of the second fixing portion 32 does not overlap with the projection of the first adhesive member 51, defining the first gap 41 between the second fixing portion 32 and the movable carrier 20. It is worth mentioning that the first gap 41 is also formed between the part of the first fixing portion 31 where the first adhesive member 51 is not provided and the movable carrier 20.

[0069] Furthermore, in combination with the foregoing, the second fixing portion 32 is used to bond with the mating surface 12 of the reflective element 10. When the reinforcement 30 and the movable carrier 20 are deformed due to temperature changes, the first gap 41 is conducive to avoiding contact between the reinforcement 30 and the movable carrier 20. In other words, it is conducive to avoiding the deformation of the movable carrier 20 from being transmitted to the reflective element 10 in turn through the second fixing portion 32 and the second adhesive 52 that touch the movable carrier 20, thereby helping to reduce the deformation of the reflective surface 11 of the reflective element 10, thereby improving the stability and reliability of the reflective module 1.

[0070] It should be understood that the second adhesive member 52 has a certain height, so that the second gap 42 is formed between the reinforcement member 30 and the reflective element 10. In combination with the above, the area of ​​the mating surface 12 of the reflective element 10 is larger than the area of ​​the second fixing portion 32, that is, at least part of the reflective element 10 is arranged opposite to the first fixing portion 31, defining the second gap 42 between the first fixing portion 31 and the reflective element 10. It is worth mentioning that the second fixing portion 32 without the second adhesive member 52 is also formed with the reflective element 10.

[0071] Furthermore, in combination with the foregoing, the first fixing portion 31 is used to bond with the movable carrier 20. When the reinforcement 30 and the reflective element 10 are deformed due to temperature changes, the second gap 42 is conducive to avoiding contact between the reinforcement 30 and the reflective element 10. In other words, it is conducive to avoiding the stress generated by the deformation of the reinforcement 30 from being transmitted to the reflective element 10 through parts other than the second adhesive 52, thereby helping to reduce the deformation of the reflective surface 11 of the reflective element 10, thereby improving the stability and reliability of the reflective module 1.

[0072] In some embodiments, Figure 4-Figure 23 As shown, the partition gap 33 penetrates the reinforcement member 30 along the thickness direction of the reinforcement member 30, and the partition gap 33 is arranged around the second fixing portion 32 and is located between the first fixing portion 31 and the second fixing portion 32; the first fixing portion 31 is suitable for being fixedly connected to the movable carrier 20, and the second fixing portion 32 is suitable for being fixedly connected to the matching surface 12. In other words, the adhesive is arranged between the matching surface 12 and the second fixing portion 32, so that the reflective element 10 is connected to the reinforcement member 30, and no adhesive is arranged between the matching surface 12 and the first fixing portion 31, that is, the reflective element 10 and the first fixing portion 31 are not directly connected, which is conducive to avoiding the deformation and stress of the first fixing portion 31 from being transmitted to the reflective module 1.

[0073] It should be understood that the partition gap 33 is arranged around the second fixed portion 32, which is conducive to isolating the second fixed portion 32 and the first fixed portion 31 in multiple directions, and further conducive to avoiding the stress of the first fixed portion 31 from being transmitted to the second fixed portion 32 from multiple directions, thereby reducing the influence of the stress on the movable carrier 20 and the first fixed portion 31 on the second fixed portion 32 and the reflective element 10, and is conducive to reducing or even avoiding deformation of the reflective surface 11 of the reflective element 10, thereby improving the reliability and stability of the reflective module 1.

[0074] In some embodiments, Figure 7-Figure 21As shown, the partition gap 33 includes a plurality of partition areas 331 arranged at intervals, and each partition area 331 is distributed at intervals on the outer periphery of the second fixing portion 32, so as to separate the first fixing portion 31 from the second fixing portion 32. Specifically, the arrangement of each partition area 331 is rotationally symmetrical relative to the geometric center of the reinforcement member 30, or the arrangement of each partition area 331 is symmetrical relative to the midline of the reinforcement member 30 parallel to the long side direction, or the arrangement of each partition area 331 is symmetrical relative to the midline of the reinforcement member 30 parallel to the short side direction, so that the force on the reinforcement member 30 is more balanced, which is conducive to avoiding stress concentration.

[0075] Several embodiments are provided below to further understand the technology of the present application. In the following embodiments, the reinforcing member 30 has two long sides arranged opposite to each other, which are recorded as the first side and the second side for ease of description; the reinforcing member 30 has two short sides arranged opposite to each other, which are recorded as the third side and the fourth side for ease of description.

[0076] [Example 1] like Figure 7 As shown, the reinforcement member 30 has four "I"-shaped partition areas 331, each of which is arranged in parallel with one of the first to fourth sides, a first fixing portion 31 is defined between the partition area 331 and the corresponding side, and a second fixing portion 32 is defined in the middle area between the four partition areas 331. It should be understood that the first fixing portion 31 and the second fixing portion 32 are isolated by the four partition areas 331, which is conducive to reducing the influence of the stress on the first fixing portion 31 located on the four sides on the second fixing portion 32 located in the middle area, and reducing the influence on the reflecting surface 11 of the reflecting element 10.

[0077] [Example 2] like Figure 8 As shown, the difference between Example 2 and Example 1 is that the first to fourth sides each correspond to two partition areas 331 of equal length and spaced apart in a direction perpendicular to the extension direction of the side, which can increase the isolation distance between the first fixing portion 31 and the second fixing portion 32 on the basis of ensuring the structural strength of the reinforcement 30, which is conducive to further reducing the influence of the stress on the first fixing portion 31 on the second fixing portion 32, and reducing the influence on the reflecting surface 11 of the reflecting element 10. It is worth mentioning that by opening two spaced apart areas 331 near each side, it is conducive to increasing the elastic coefficient of the second fixing portion 32, thereby reducing the stress deformation of the second fixing portion 32.

[0078] It should be understood that each side may also correspond to three or more partition areas 331 arranged at intervals, and the present application does not impose any specific limitation on this.

[0079] [Example 3] like Fig. 9As shown, the difference between Example 3 and Example 1 is that the first side and the second side each correspond to two partition areas 331 of equal length and spaced apart, and the third side and the fourth side each correspond to one partition area 331, which is conducive to playing a role in targeted compensation of stress concentration areas. Specifically, the stress concentration point on the reinforcement 30 may be close to the side with a smaller area of ​​the partition area 331, that is, the stress concentration point on the reinforcement 30 will be close to the third side and the fourth side, which is conducive to reducing the influence of stress on the area close to the first side and the second side on the second fixing portion 32, thereby reducing the influence of stress on the long side of the reflective element 10, and thereby helping to reduce the field curvature of the long side of the reflective element 10. In addition, by adjusting the stress concentration position, the shape or position of the reflective element 10 can also be adjusted so that the optical center of the reflective element 10 coincides with or approaches to coincide with the expected optical center of the camera module 2, which is conducive to improving the eccentricity problem.

[0080] It should be understood that, according to actual applications, the first side and the second side each correspond to a partition area 331, and the third side and the fourth side each correspond to two partition areas 331 of equal length and spaced apart, and the present application does not impose any specific limitation on this.

[0081] [Example 4] like Fig.10 As shown, the difference between Example 4 and Example 1 lies in that the first side to the fourth side respectively correspond to a number of partition areas 331 of equal length and spaced apart in a direction parallel to the side extension direction, and the partition areas 331 arranged on the reinforcement 30 are symmetrical with respect to the midline of the reinforcement 30 parallel to the long side direction, and symmetrical with respect to the midline of the reinforcement 30 parallel to the long side direction, so that the stress transmitted from the first fixing portion 31 to the second fixing portion 32 is symmetrical along the two midlines, which is beneficial to avoid non-centering deformation of the second fixing portion 32, and is beneficial to reduce the uneven deformation of the reflecting surface 11 of the reflecting element 10 and cause astigmatism, thereby improving the imaging quality of the camera module 2.

[0082] [Example 5] like Fig.11 As shown, the difference between Example 5 and Example 4 is that each partition area 331 is trapezoidal, and the long side direction of the trapezoid is arranged close to the first fixed part 31, so that the first fixed part 31 is suitable for generating a larger deformation to release stress, and the short side direction of the trapezoid is arranged toward the second fixed part 32, so that the second fixed part 32 has a greater rigidity to resist deformation, that is, the second fixed part 32 is less likely to deform, which is beneficial to avoid deformation of the reflective element 10 connected to the second fixed part 32.

[0083] It is worth mentioning that Fig.12As shown, the partition area 331 may also be in a "V" shape, a "W" shape, etc. to achieve the above-mentioned effect, and the present application does not impose any specific limitation on this.

[0084] [Example 6] like Fig.13 As shown, the reinforcement 30 has four "L"-shaped partition areas 331, each of which is located at the four corners of the reinforcement 30 and extends to the middle section from the first side to the fourth side. On the basis of isolating the first fixing portion 31 and the second fixing portion 32, it is beneficial to reduce the deformation of the four corners of the second fixing portion 32, thereby reducing the influence of stress on the corners of the reflective element 10, and is beneficial to reducing the field curvature of the corners of the reflective element 10, thereby improving the reliability and stability of the reflective module 1, and improving the imaging quality of the camera module 2.

[0085] Furthermore, the four "L"-shaped partition areas 331 are symmetrical with respect to the midline of the reinforcement 30 parallel to the long side direction, and symmetrical with respect to the midline of the reinforcement 30 parallel to the long side direction, so that the stress transmitted from the first fixing portion 31 to the second fixing portion 32 is symmetrical along the two midlines, which is beneficial to avoid non-central deformation of the second fixing portion 32, and is beneficial to reduce the uneven deformation of the reflecting surface 11 of the reflecting element 10 and cause astigmatism, thereby improving the imaging quality of the camera module 2.

[0086] [Example 7] like Fig.14 As shown, Example 7 combines Example 4 and Example 6, which is beneficial to avoiding the non-centering deformation of the second fixing portion 32, thereby reducing the uneven deformation of the reflecting surface 11 of the reflecting element 10 and causing astigmatism, and is also beneficial to reducing the influence of stress on the corners of the reflecting element 10, thereby reducing the field curvature of the corners of the reflecting element 10, which is beneficial to improving the reliability and stability of the reflecting module 1, and improving the imaging quality of the camera module 2.

[0087] Further, such as Fig.15 As shown, a closed-loop path can also be formed between each partition area 331, which is beneficial to further isolate the first fixing part 31 and the second fixing part 32, reduce the area of ​​the stress concentration area on the reinforcement 30, and thereby reduce the deformation of the second fixing part 32 and the reflective element 10 connected to the second fixing part 32, which is beneficial to improve the reliability and stability of the reflective module 1.

[0088] [Example 8] like Fig.16As shown, Example 8 combines Example 2 and Example 6, which is beneficial to increasing the elastic coefficient of the second fixing portion 32, thereby reducing the force deformation of the second fixing portion 32, and avoiding the second fixing portion 32 from producing non-centering deformation, thereby reducing the uneven deformation of the reflecting surface 11 of the reflecting element 10 and causing astigmatism, and is also beneficial to reducing the influence of stress on the corners of the reflecting element 10, thereby reducing the field curvature of the corners of the reflecting element 10, which is beneficial to improving the reliability and stability of the reflecting module 1, and improving the imaging quality of the camera module 2.

[0089] [Example 9] like Fig.17 As shown, the reinforcement member 30 has two arc-shaped partition areas 331, each of which is arranged corresponding to the third side and the fourth side, and a first fixing portion 31 is defined between the partition area 331 and the corresponding side, and a second fixing portion 32 is defined in the central area between the two partition areas 331. It should be understood that when the outer contour of the reflective element 10 is a circular, elliptical or D-Cut shape, the arc-shaped partition area 331 enables the outer contour of the second fixing portion 32 to be more adapted to the outer contour of the reflective element 10, which is conducive to the uniform distribution of stress. In addition, for the reflective element 10 with a non-rotationally symmetrical outer contour, the strain generated during the molding or cutting process will be greater than that of the reflective element 10 with a rotationally symmetrical outer contour. Taking the D-Cut-shaped reflective element 10 as an example, due to the cutting process at the two straight edges, the stress at the two straight edges of the reflective element 10 will be more concentrated, thereby causing the optical center to deviate toward the straight edge of the reflective element 10. By setting the arc-shaped partition area 331, it is conducive to compensating for the offset of the optical center.

[0090] It is worth mentioning that Fig.18 As shown, the arc-shaped partition area 331 may also be arranged corresponding to the first side edge and the second side edge according to actual application, and the present application does not impose any specific limitation on this.

[0091] [Example 10] like Fig.19 As shown, the reinforcement 30 has four arc-shaped partition areas 331, all of which are located on the same imaginary circle and are evenly distributed along the circumferential direction. Each partition area 331 is respectively arranged corresponding to one of the first side to the fourth side, which is beneficial to making the stress transfer between the first fixed part 31 and the second fixed part 32 approach rotational symmetry, and is beneficial to avoiding the generation of uneven stress and causing uneven deformation of the reflecting surface 11 of the reflecting element 10 connected to the second fixed part 32.

[0092] Especially when a lens is provided on the object side or the image side of the reflective element 10, the stress of the reflective surface 11 of the reflective element 10 is closer to rotational symmetry relative to the optical axis, so that the surface shape of the reflective surface 11 is closer to the expected state, which is beneficial to making the optical performance of the reflective surface 11 more uniform, and reducing the distortion of light during the reflection process. The light near the optical axis and the light at the edge are more likely to maintain the original direction of propagation, which is beneficial to reduce the separation phenomenon, and further helps to avoid defects such as coma, astigmatism and distortion in the imaging of the camera module 2.

[0093] It should be understood that the number of the arc-shaped partition areas 331 may also be two, six, eight, etc., and the present application does not impose any specific limitation on this.

[0094] [Example 11] like Fig. 20 As shown, the difference between Example 11 and Example 10 is that the two partition areas 331 corresponding to the first side and the second side are located on an imaginary circle with a radius of R1, and the two partition areas 331 corresponding to the third side and the fourth side are located on an imaginary circle with a radius of R2, wherein R1<R2. It should be understood that when the mating surface 12 of the reflective element 10 is a rectangle, in order to ensure the bonding strength between the reflective element 10 and the second fixing portion 32 of the reinforcement 30, the area of ​​the first adhesive 51 located between the first side and the partition area 331, and on the first fixing portion 31 located between the second side and the partition area 331 is large, so the stress generated by curing shrinkage is also large, and it is necessary to use the partition area 331 corresponding to the first side and the second side to release it. Furthermore, it is more difficult for the second fixing portion 32 to release stress by utilizing the partition area 331 corresponding to the first side edge and the second side edge. By having R1<R2, the second fixing portion 32 can have a larger size in the direction parallel to the long side, which is beneficial for bearing the stress generated by the second adhesive 52 during curing and shrinkage, thereby helping to reduce the deformation of the second fixing portion 32 and the impact on the reflective element 10 connected to the second fixing portion 32, thereby helping to improve the reliability and stability of the reflective module 1.

[0095] [Example 12] like Fig.21As shown, the difference between Example 12 and Example 10 is that the widths of the two partition areas 331 corresponding to the first side and the second side are larger, and the widths of the two partition areas 331 corresponding to the third side and the fourth side are smaller. It should be understood that when the mating surface 12 of the reflective element 10 is rectangular, in order to ensure the bonding strength between the reflective element 10 and the second fixing portion 32 of the reinforcement 30, the area of ​​the first adhesive 51 on the first fixing portion 31 between the first side and the partition area 331 and between the second side and the partition area 331 is larger, so the stress generated by curing shrinkage is also larger. The provision of the partition area 331 with a larger width is conducive to releasing the stress, so as to reduce the influence on the second fixing portion 32 and the reflective element 10 connected to the second fixing portion 32, which is conducive to improving the reliability and stability of the reflective module 1.

[0096] In some embodiments, Fig. 22 and Fig.23 As shown, the partition gap 33 includes a plurality of partition areas 331 arranged at intervals, and at least part of the partition areas 331 are distributed at intervals on the second fixing portion 32, which is conducive to releasing stress of the reinforcement member 30 to reduce deformation of the reinforcement member 30. Further, along the thickness direction of the reflective element 10, the center of the projection area of ​​the mating surface 12 on the reinforcement member 30 is defined as the central area, and the area of ​​the central area is 20% to 30% of the total area of ​​the projection area. The central area overlaps at least part of the partition area 331, thereby reducing the strain of the middle area of ​​the reflective surface 11 of the reflective element 10, making the surface shape of the reflective surface 11, especially the surface shape of the middle area, closer to the expected state, reducing the distortion of light during the reflection process, and helping to improve the imaging quality of the camera module 2. Several embodiments are provided below to further understand the technology of the present application.

[0097] [Example 13] like Fig. 22 As shown, each partition area 331 extends along the second direction, each partition area 331 is spaced apart along the first direction, the size of the partition area 331 along the first direction is recorded as X1, the distance between two adjacent partition areas 331 is recorded as X2, and the distance from the partition area 331 closest to the short side of the reinforcement 30 to the short side of the reinforcement 30 is recorded as X3. X is the size of the matching surface 12 of the reflective element 10 along the first direction, the first direction is parallel to the long side of the reinforcement 30, and the second direction is parallel to the short side of the reinforcement 30.

[0098] X2 satisfies: 3X1≤X2≤6X1, or 0.5mm≤X2≤2mm, or 0.05X≤X2≤0.2X, so that there is enough area between two adjacent partition areas 331 for bonding with the movable carrier 20 and the reflective element 10, thereby enabling reliable bonding between the movable carrier 20, the reinforcement 30 and the reflective element 10. Furthermore, the stress of each part of the reinforcement 30 can be isolated by the partition area 331, so that the stress distribution is more dispersed, which is conducive to avoiding stress concentration, thereby reducing the influence of the stress of the reinforcement 30 on the reflective element 10 connected to the second fixing portion 32, reducing the deformation of the reflective surface 11 of the reflective element 10, and making the surface shape of the reflective surface 11, especially the surface shape of the middle area, closer to the expected state.

[0099] In one specific example, X1=0.4mm, X2=1.3mm. In one specific example, X1=0.3mm, X2=1.8mm. In one specific example, X1=0.3mm, X2=1.2mm.

[0100] X3 satisfies: X3 ≥ X2, so that the rigidity of the peripheral area of ​​the reinforcement member 30 is greater than the rigidity of the middle area of ​​the reinforcement member 30. It should be understood that the peripheral area of ​​the reinforcement member 30 is defined as the first fixing portion 31, which is used to bond with the movable carrier 20. The first fixing portion 31 has a large rigidity, which is conducive to resisting the stress generated by the curing shrinkage of the first adhesive member 51, so as to reduce the deformation of the first fixing portion 31.

[0101] Furthermore, at least part of the partition area 331 is located in the second fixed portion 32, so that the stress on the second fixed portion 32 is more dispersed, which is beneficial to avoid stress concentration, making the reinforcement 30 smoother, thereby improving the flatness of the reinforcement 30, and thereby reducing the impact of the deformation of the reinforcement 30 on the reflective element 10, so that the surface shape of the reflective surface 11 of the reflective element 10 is closer to the expected state, thereby improving the reliability and stability of the reflective module 1.

[0102] Furthermore, a partial partition area 331 may be located between the first fixing portion 31 and the second fixing portion 32 to isolate the first fixing portion 31 and the second fixing portion 32 , thereby preventing the stress of the first fixing portion 31 from being transferred to the second fixing portion 32 .

[0103] It is worth mentioning that the setting of each partition area 331 is symmetrical with respect to the midline of the reinforcement 30 parallel to the first direction, and symmetrical with respect to the midline of the reinforcement 30 parallel to the second direction, which is beneficial to make the force on the reinforcement 30 more balanced and reduce the risk of deviation of the light center of the reflective element 10.

[0104] [Example 14] like Fig.23As shown, each partition area 331 extends along the first direction, each partition area 331 is spaced apart along the second direction, the size of the partition area 331 along the first direction is recorded as Y1, the distance between two adjacent partition areas 331 is recorded as Y2, and the distance from the partition area 331 closest to the short side of the reinforcement 30 to the short side of the reinforcement 30 is recorded as Y3. Y is the size of the mating surface 12 along the second direction, the first direction is parallel to the long side of the reinforcement 30, and the second direction is parallel to the short side of the reinforcement 30.

[0105] Y2 satisfies: 3Y1≤Y2≤6Y1, or 0.5mm≤Y2≤2mm, or 0.06Y≤Y2≤0.25Y, so that there is enough area between two adjacent partition areas 331 for bonding with the movable carrier 20 and the reflective element 10, thereby enabling reliable bonding between the movable carrier 20, the reinforcement 30 and the reflective element 10. Furthermore, the stress of each part of the reinforcement 30 can be isolated by the partition area 331, so that the stress distribution is more dispersed, which is conducive to avoiding stress concentration, thereby reducing the influence of the stress of the reinforcement 30 on the reflective element 10 connected to the second fixing portion 32, reducing the deformation of the reflective surface 11 of the reflective element 10, and making the surface shape of the reflective surface 11, especially the surface shape of the middle area, closer to the expected state.

[0106] In one specific example, Y1=0.4mm, Y2=1.3mm. In one specific example, Y1=0.3mm, Y2=1.8mm. In one specific example, Y1=0.3mm, Y2=1.2mm.

[0107] Y3 satisfies: Y3 ≥ Y2, so that the rigidity of the peripheral area of ​​the reinforcing member 30 is greater than the rigidity of the middle area of ​​the reinforcing member 30. It should be understood that the peripheral area of ​​the reinforcing member 30 is defined as the first fixing portion 31, which is used to bond with the movable carrier 20. The first fixing portion 31 has a large rigidity, which is conducive to resisting the stress generated by the curing shrinkage of the first adhesive 51, so as to reduce the deformation of the first fixing portion 31.

[0108] Furthermore, at least part of the partition area 331 is located in the second fixed portion 32, so that the stress on the second fixed portion 32 can be more dispersed, which is beneficial to avoid stress concentration, making the reinforcement 30 more flat, thereby improving the flatness of the reinforcement 30, and further reducing the influence of the deformation of the reinforcement 30 on the reflective element 10, so that the surface shape of the reflective surface 11 of the reflective element 10 is closer to the expected state, thereby improving the reliability and stability of the reflective module 1.

[0109] Furthermore, a partial partition area 331 may be located between the first fixing portion 31 and the second fixing portion 32 to isolate the first fixing portion 31 and the second fixing portion 32 , thereby preventing the stress of the first fixing portion 31 from being transferred to the second fixing portion 32 .

[0110] It is worth mentioning that the arrangement of each partition area 331 is symmetrical with respect to the midline of the reinforcement 30 parallel to the first direction, and symmetrical with respect to the midline of the reinforcement 30 parallel to the second direction, which is beneficial to make the force on the reinforcement 30 more balanced and reduce the risk of deviation of the light center of the reflective element 10.

[0111] [Example 15] like Fig.24 and Fig.25 As shown, each of the partition areas 331 is circular, and at least part of the partition areas 331 are distributed in an array on the second fixing portion 32. It should be understood that the circular partition area 331 can reduce the stress concentration of the reinforcement 30, so that the stress distribution of the reinforcement 30 is more uniform, which is conducive to reducing the risk of the light center of the reflective element 10 being offset. It is worth mentioning that the circular partition area 331 has a smaller impact on the overall structural strength of the reinforcement 30, which is conducive to maintaining the integrity of the structure, thereby reducing the impact of the partition area 331 on the local strength of the second fixing portion 32. In addition, the circular partition area 331 can release stress more effectively, which is conducive to reducing the impact of the deformation of the first fixing portion 31 on the reflective element 10, so that the surface shape of the reflective surface 11 of the reflective element 10 is closer to the expected state, thereby improving the reliability and stability of the reflective module 1.

[0112] In a specific example, if Fig.24 As shown, a plurality of second adhesive members 52 extend along the second direction and are arranged between the partition areas 331 at intervals along the first direction, so that the second fixing portion 32 and the reflective element 10 can be reliably bonded. It is worth mentioning that the arrangement of each second adhesive member 52 is symmetrical with respect to the center line of the reinforcement member 30 parallel to the first direction, and is symmetrical with respect to the center line of the reinforcement member 30 parallel to the second direction, so as to make the force of the reflective element 10 more balanced and reduce the risk of the light center of the reflective element 10 being offset.

[0113] In another specific example, Fig.25As shown, a portion of the second adhesive 52 extends along the second direction and is arranged between the partition areas 331 at intervals along the first direction, and another portion of the second adhesive 52 extends along the first direction and is distributed in an array between the partition areas 331. It should be understood that the criss-cross arrangement of the second adhesive 52 is conducive to increasing the bonding area between the second fixing portion 32 and the reflective element 10, thereby improving the bonding reliability between the reinforcement 30 and the reflective element 10. In addition, the second adhesive 52 extending along the second direction and the second adhesive 52 extending along the first direction are arranged at intervals, thereby helping to avoid a large accumulation of the curing stress of the second adhesive 52, thereby further reducing the influence of the curing stress of the second adhesive 52 on the reflective element 10, thereby making the surface shape of the reflective surface 11 of the reflective element 10 closer to the expected state, and improving the reliability and stability of the reflective module 1.

[0114] In some embodiments, Figure 3-Figure 5 As shown, the reinforcement 30 also includes a supporting portion 34, which is capable of connecting the first fixing portion 31 and the second fixing portion 32 so that the plane where the first fixing portion 31 is located and the plane where the second fixing portion 32 is located are skewed and parallel, and in the thickness direction of the reinforcement 30, the projection of the first fixing portion 31 and the projection of the second fixing portion 32 do not overlap, and the partition gap 33 is arranged around the edge of the second fixing portion 32; the first fixing portion 31 is bonded to the movable carrier 20 through the first adhesive 51, defining a first gap 41 between the first fixing portion 31, the supporting portion 34 and the movable carrier 20; the second fixing portion 32 is bonded to the mating surface 12 through the second adhesive 52, defining a second gap 42 between the second fixing portion 32 and the mating surface 12, and the second gap 42 is located at the outer periphery of the second adhesive 52.

[0115] It should be understood that the support portion 34 is helpful to increase the distance between the second fixing portion 32 and the movable carrier 20, that is, the first gap 41 is increased, and when the reinforcing member 30 and the movable carrier 20 are deformed due to temperature changes, the reinforcing member 30 and the movable carrier 20 are further prevented from touching each other. In particular, when the reflective module 1 or the camera module 2 falls, the movable carrier 20 and the reinforcing member 30 may be greatly deformed. By increasing the first gap 41, a buffer distance is provided, which is helpful to avoid impact and collision between the movable carrier 20 and the reinforcing member 30, thereby better protecting the reflective element 10, the reinforcing member 30 and the movable carrier 20, and improving the reliability and impact resistance of the reflective module 1.

[0116] It is worth mentioning that the support portion 34 can release stress through deformation, which is conducive to further reducing the impact of the curing shrinkage of the first adhesive 51 on the second fixing portion 32, and is conducive to reducing the impact on the reflective element 10 connected to the second fixing portion 32, so as to further reduce the risk of deformation of the reflective surface 11. In addition, by increasing the first gap 41, it is also beneficial to the heat dissipation of the movable carrier 20 and the reinforcement member 30, and further reducing the deformation and stress of the movable carrier 20 and the reinforcement member 30.

[0117] In at least one embodiment, Figure 4 As shown, the first fixing portion 31 is disposed on two opposite sides of the second fixing portion 32, and the supporting portion 34 is also located on two opposite sides of the second fixing portion 32, so as to connect the first fixing portion 31 and the second fixing portion 32. It should be understood that only arranging the supporting portion 34 and the first fixing portion 31 on two opposite sides of the second fixing portion 32 is conducive to reducing the processing difficulty of the reinforcement member 30, thereby reducing the production cost of the reinforcement member 30 and improving the production efficiency; it is also conducive to reducing the overall size of the reflection module 1.

[0118] In at least one other embodiment, Figure 5 As shown, the first fixing portion 31 is arranged on the four sides of the second fixing portion 32, and the supporting portion is also located on the four sides of the second fixing portion 32, so as to connect the first fixing portion 31 and the second fixing portion 32. It should be understood that the supporting portion 34 and the first fixing portion 31 are arranged on the four sides of the second fixing portion 32, which is conducive to increasing the bonding area between the first fixing portion 31 and the movable carrier 20, and improving the connection strength and connection reliability between the reinforcing member 30 and the movable carrier 20.

[0119] In some embodiments, Figure 1 and Figure 3 As shown, the movable carrier 20 includes a carrier mounting wall 21, a first carrier side wall 22 and a second carrier side wall 23. The carrier mounting wall 21 is inclined to define a mounting surface 211 on the surface of the carrier mounting wall 21 facing the reflective element 10. The mounting surface 211 is suitable for being bonded and fixed to the first fixing portion 31. The first carrier side wall 22 and the second carrier side wall 23 are located at opposite sides of the carrier mounting wall 21 at intervals along the direction of the third axis A3. A accommodating cavity 26 is formed between the first carrier side wall 22, the second carrier side wall 23 and the mounting surface 211, and the accommodating cavity 26 is used to accommodate the reflective element 10.

[0120] That is, the reinforcing member 30 and the reflective element 10 are both placed in the accommodating cavity 26, the reinforcing member 30 is located between the reflective element 10 and the carrier mounting wall 21, at least a portion of the first fixing portion 31 of the reinforcing member 30 is connected to the carrier mounting wall 21 via the first adhesive 51, and at least a portion of the second fixing portion 32 is connected to the carrier mounting wall 21 via the second adhesive 52. It should be understood that the first carrier side wall 22 and the second carrier side wall 23 can play a role in assisting the positioning of the reflective element 10 and protecting the reflective element 10.

[0121] In some embodiments, Figure 1 and Figure 3 As shown, the movable carrier 20 further includes a carrier back wall 25, which is located between the first carrier side wall 22 and the second carrier side wall 23, and is connected to the first carrier side wall 22, the second carrier side wall 23 and the carrier mounting wall 21, which is beneficial to improving the structural strength and structural reliability of the movable carrier 20, and also plays a role in protecting the reflective element 10. Further, the carrier back wall 25 and the carrier mounting wall 21 are spaced apart along the second optical axis OA2 direction, which is beneficial to avoid the force of the carrier back wall 25 being transmitted to the carrier mounting wall 21 and affecting the reflective element 10.

[0122] In some embodiments, the thickness of the reinforcement member 30 is recorded as H, the thickness of the carrier mounting wall 21 is recorded as L, and the thickness of the reflective element 10 is recorded as T, satisfying: L≤H≤T. It should be understood that, under the condition that the movable carrier 20 meets the minimum wall thickness of injection molding, the smaller the wall thickness of the movable carrier 20, the smaller the stress and strain generated when heated. In other words, by reducing the thickness L of the carrier mounting wall 21, it is helpful to reduce the stress and strain generated by the carrier mounting wall 21 when heated, thereby reducing the impact on the reinforcement member 30 and the reflective element 10.

[0123] Furthermore, the reinforcement member 30 is made of metal, and the thickness H of the reinforcement member 30 is greater than or equal to the thickness L of the carrier mounting wall 21, which is conducive to compensating the structural strength of the carrier mounting wall 21, thereby improving the impact resistance of the carrier mounting wall 21. Furthermore, since the reinforcement member 30 is made of metal, its thermal expansion coefficient is higher than that of the reflective element 10, and by making the thickness H of the reinforcement member 30 less than or equal to the thickness T of the reflective element 10, it is conducive to reducing the influence of the deformation of the reinforcement member 30 caused by temperature on the reflective element 10, thereby helping to reduce the deformation of the reflective surface 11 of the reflective element 10, thereby improving the stability and reliability of the reflective module 1.

[0124] In some embodiments, the area of ​​the first fixing portion 31 is recorded as N1, and the area of ​​the second fixing portion 32 is recorded as N2, satisfying: N1 ≥ 0.5N2. It should be understood that by making N1 ≥ 0.5N2, it is helpful to ensure that the first fixing portion 31 has a larger area for bonding with the movable carrier 20, thereby improving the connection strength and connection reliability of the reinforcement 30 and the movable carrier 20. In addition, it is also helpful to improve the isolation effect of the partition gap 33, thereby reducing the stress transmitted from the first fixing portion 31 to the second fixing portion 32, and then helping to reduce or even avoid deformation of the reflective surface 11 of the reflective element 10, thereby improving the reliability and stability of the reflective module 1.

[0125] In some embodiments, the area of ​​the mating surface 12 of the reflective element 10 is recorded as M, and the area of ​​the mating surface 12 bonded to the second fixing portion 32 is recorded as M1, which satisfies: 0.3M≤M1≤0.7M. It should be understood that the area of ​​the mating surface 12 bonded to the second fixing portion 32 is also the area of ​​the second adhesive 52. By making 0.3M≤M1≤0.7M, it is helpful to reduce the amount of adhesive, thereby reducing the production cost of the reflective module 1. In addition, on the basis of ensuring that the reflective element 10 and the reinforcement 30 are reliably fixedly connected, it is also helpful to reduce the stress transfer between the reinforcement 30, the second adhesive 52 and the reflective element 10. In addition, the area of ​​the second gap 42 on the periphery of the second adhesive 52 is increased, thereby reducing the risk of the reinforcement 30 and the reflective element 10 touching each other after being deformed by heat.

[0126] In other embodiments, the reflective element 10 may also be connected to the second fixing portion 32 of the reinforcement 30 by welding, thereby shortening the heating time of the reflective element 10 and the reinforcement 30 and reducing the stress and strain of the reflective element 10 and the reinforcement 30 .

[0127] In some embodiments, the thermal expansion coefficient of the reflective element 10 is recorded as C1, and the thermal expansion coefficient of the reinforcing member 30 is recorded as C2, which satisfies: 0.25C2≤C1≤0.75C2. It should be understood that by making 0.25C2≤C1≤0.75C2, the forces on the upper and lower surfaces of the second adhesive member 52 are more balanced, which helps to avoid the risk of delamination or surface cracking of the second adhesive member 52.

[0128] Specifically, if the thermal expansion coefficient C1 of the reflective element 10 and the thermal expansion coefficient C2 of the reinforcement 30 differ too much, then during the process of thermal curing of the adhesive to form the second adhesive 52, the stress on one surface of the second adhesive 52 may be too great compared to the stress on the other surface, thereby causing stress concentration, resulting in delamination or surface fragmentation of the second adhesive 52. In this embodiment, by satisfying 0.25C2≤C1≤0.75C2, it is beneficial to make the force on the second adhesive 52 more balanced, reduce or even avoid stress concentration, and improve the bonding strength and bonding reliability between the reinforcement 30 and the reflective element 10. In other words, although the area of ​​the second adhesive 52 is small because 0.3M≤M1≤0.7M needs to be satisfied, by satisfying 0.25C2≤C1≤0.75C2, the reinforcement 30 and the reflective element 10 can still be reliably fixedly connected.

[0129] In some embodiments, Figure 6 As shown, the reinforcement 30 also includes an interlocking portion 35, which is bent and extended from the first fixing portion 31 toward the movable carrier 20 and embedded in the movable carrier 20. At least a portion of the first fixing portion 31 is embedded in the movable carrier 20, so that the first fixing portion 31 and the movable carrier 20 are interlocked, defining a first gap 41 between the reinforcement 30 and the movable carrier 20; the second fixing portion 32 is bonded to the mating surface 12 through the second adhesive 52, defining a second gap 42 between the reinforcement 30 and the mating surface 12, and the second gap 42 is located at the outer periphery of the second adhesive 52.

[0130] Specifically, the reinforcing member 30 is formed on the movable carrier 20 by insert injection molding, which is conducive to avoiding the provision of adhesive between the first fixing portion 31 of the reinforcing member 30 and the movable carrier 20, and is conducive to avoiding the shrinkage stress during the process of thermal curing of the adhesive to form the first adhesive member 51. In other words, the insert injection molding process is used instead of bonding, which is conducive to reducing the stress between the first fixing portion 31 and the movable carrier 20, and is conducive to reducing the influence on the second fixing portion 32 and the reflective element 10 connected to the second fixing portion 32.

[0131] In some embodiments, Figure 1 and Figure 3As shown, the movable carrier 20 includes a carrier bottom wall 24, a first carrier side wall 22, a second carrier side wall 23 and a carrier back wall 25. The carrier bottom wall 24 is arranged perpendicular to the first optical axis OA1, the first carrier side wall 22 and the second carrier side wall 23 are located on opposite sides of the carrier bottom wall 24 along the third axis A3 direction, and the carrier back wall 25 connects the first carrier side wall 22 and the second carrier side wall 23; the reinforcement member 30 is arranged obliquely between the first carrier side wall 22 and the second carrier side wall 23, the second fixing portion 32 of the reinforcement member 30 is arranged spaced apart from the carrier bottom wall 24 along the first optical axis OA1 direction, and the second fixing portion 32 of the reinforcement member 30 is arranged spaced apart from the carrier back wall 25 along the second optical axis OA2 direction, that is, the reinforcement member 30 is arranged in the air. Further, the engaging portion 35 of the reinforcement member 30 is embedded in at least one of the carrier bottom wall 24, the first carrier side wall 22, the second carrier side wall 23 and the carrier back wall 25, so as to improve the connection strength and connection reliability of the reinforcement member 30 and the movable carrier 20.

[0132] In at least one embodiment, Figure 6 As shown, the embedding portion 35 includes a first embedding portion 351. When the reinforcing member 30 is embedded in the movable carrier 20, the first embedding portion 351 bends and extends along the first optical axis OA1 to be embedded in the carrier back wall 25. In at least one embodiment, Figure 6 As shown, the embedding portion 35 includes a second embedding portion 352. When the reinforcing member 30 is embedded in the movable carrier 20, the second embedding portion 352 is bent and extended along the second optical axis OA2 to be embedded in the carrier bottom wall 24. In at least one embodiment, Figure 6 As shown, the embedding portion 35 includes a third embedding portion 353 . When the reinforcement member 30 is embedded in the movable carrier 20 , the third embedding portion 353 extends along the third axis A3 to embed into the first carrier side wall 22 and the second carrier side portion.

[0133] In some embodiments, Figure 1 and Figure 3 As shown, the reflection module 1 also includes a bracket 60, a first lens 71 and a second lens 72. The bracket 60 is fixed to the movable carrier 20 so as to be suitable for moving synchronously with the movable carrier 20. The first lens 71 is carried by the bracket 60 to be arranged relative to the reflection element 10 along the first optical axis OA1. The second lens 72 is carried by the bracket 60 to be arranged relative to the reflection element 10 along the second optical axis OA2.

[0134] In some embodiments, the first lens 71 of the reflective module 1 has at least one convex surface, so that the first lens 71 has positive optical power for converging light; the second lens 72 has at least one concave surface, so that the second lens 72 has negative optical power for expanding light. It is worth mentioning that the first lens 71 defines a first optical axis OA1, and the second lens 72 defines a second optical axis OA2, the first optical axis OA1 is parallel to the first direction, and the second optical axis OA2 is parallel to the second direction.

[0135] That is to say, the first lens 71 has positive optical power, and is able to converge light, so that the light along the first optical axis OA1 is converged after passing through the first lens 71, thereby increasing the amount of light entering without changing the physical aperture of the camera module 2. In other words, it is equivalent to increasing the effective aperture of the camera module 2, thereby improving the imaging quality of the camera module 2 in a low-light environment.

[0136] Furthermore, the light rays converged by the first lens 71 remain converged after being reflected by the reflective element 10, and thus the required size of the second lens 72 is also smaller, which is beneficial to reducing the size of the second lens 72 along the first direction, and is beneficial to reducing the optical effective diameter of each optical lens in the lens module 81 along the first direction, thereby reducing the shoulder height of the camera module 2, which is beneficial to meeting the development trend of lighter and thinner electronic devices.

[0137] As mentioned above, the second lens 72 has a negative optical power, which can expand the light, so that the light along the second optical axis OA2 is expanded after passing through the second lens 72, increasing the coverage area of ​​the light reaching the lens module 81. The reflective element 10 moves during the optical image stabilization operation. Since the light coverage area increases, the movement of the reflective element 10 has a relatively small effect on the position of the light on the lens module 81, which is conducive to improving image stability and making the picture more stable during shooting.

[0138] It should be understood that since the first lens 71 has a convergence effect and the second lens 72 has a beam expansion effect, the surface shape of the reflective surface 11 of the reflective element 10 is particularly important. If the reflective surface 11 has a large protrusion or depression, the light converged by the first lens 71 will not be accurately converged to the predetermined focal position on the second lens 72 after being reflected by the reflective element 10, thereby generating aberrations. Furthermore, the beam expansion effect of the second lens 72 may further amplify the aberration, resulting in blurred final imaging of the camera module 2 and loss of details. Large protrusions or depressions on the reflective surface 11 will also scatter the light and form stray light, or the light will enter the imaging system after multiple reflections, resulting in an increase in the final imaging noise of the camera module 2, and even the formation of ghosting or other abnormal light spots, affecting the readability and aesthetics of the image. In addition, if the stress distribution of the reflective surface 11 is uneven, resulting in uneven protrusions or depressions on the reflective surface 11, the light at different positions will be offset to varying degrees, causing the image field to bend, resulting in inconsistent imaging quality at the center and edge of the image.

[0139] In this embodiment, as described above, the first fixing portion 31 of the reinforcement member 30 is fixedly connected to the movable carrier 20, the second fixing portion 32 is fixedly connected to the mating surface 12 of the reflective element 10, and the partition gap 33 is located between the first fixing portion 31 and the second fixing portion 32, or is arranged on the second fixing portion 32, so as to isolate the first fixing portion 31 from the reflective element 10, and then when the movable carrier 20 is heated, the force generated by the deformation of the movable carrier 20 will be applied to the first fixing portion 31. Furthermore, the stress can be absorbed by the first fixing portion 31 and the second fixing portion 32, and the partition gap 33 is conducive to further avoiding the stress from being transmitted to the reflective element 10, so as to reduce the influence of the force generated by the deformation of the movable carrier 20 on the reflective element 10, which is conducive to improving the reliability and stability of the reflective module 1.

[0140] That is to say, by providing the reinforcement member 30, it is helpful to improve the flatness of the reflecting surface 11, or make the surface shape of the reflecting surface 11 approach the expected surface shape, so that the propagation path of the light coincides with or approaches to coincide with the expected path, which is helpful to keep the light propagating along the path after being focused by the first lens 71, and reduce the deviation of the propagation path of the light after being expanded by the second lens 72, thereby improving the final imaging quality of the camera module 2.

[0141] It is worth mentioning that, through the assembly of the bracket 60 and the movable carrier 20, the relative position and relative angle between the first lens 71 and the second lens 72 of the reflective element 10 can be kept fixed, and then when the first lens 71, the reflective element 10 and the second lens 72 are driven to rotate together, the light is incident on the reflective element 10 through the first lens 71, and then reflected to the second lens 72 by the reflective element 10. In the process, the propagation path and propagation angle are maintained relatively stable, which not only improves the clarity of the imaging, but also enhances the overall quality of the image. In addition, the relative position and relative angle between the first lens 71 and the second lens 72 of the reflective element 10 are kept fixed, which is also conducive to avoiding the setting of additional structures or algorithms to optimize the propagation path and angle of the light, which is conducive to reducing the design difficulty and manufacturing difficulty of the reflective module 1 and the camera module 2, and is conducive to simplifying the driving structure and improving the reliability and stability of the reflective module 1.

[0142] Furthermore, the first lens 71 and the second lens 72 are carried on the bracket 60. Since the size of the bracket 60 is smaller than the base 91 of the camera module 2, compared with the first lens 71 and the second lens 72 being fixed to the base 91, in this embodiment, the first lens 71 and the second lens 72 are installed on the bracket 60, which is conducive to reducing the size of the first lens 71 and the second lens 72, and reducing the weight of the first lens 71 and the second lens 72. In addition, the gap between the first lens 71, the reflective element 10 and the second lens 72 is smaller, which is conducive to making the structure of the reflective module 1 more compact.

[0143] A camera module 2, such as Fig.26 As shown, it includes: the above-mentioned reflection module 1, lens module 81, imaging module 82, base 91 and shell 92. The lens module 81 is held on the light reflection path of the reflection module 1. The imaging module 82 receives the light emitted by the lens module 81 for imaging. The base 91 has a receiving cavity 911, and the reflection module 1 and the lens module 81 are arranged in the receiving cavity 911. The shell 92 is covered on the base 91 to protect the reflection module 1 and the lens module 81 in the receiving cavity 911.

[0144] In some embodiments, the lens module 81 includes a plurality of lenses, and the lens module 81 is used to image light on an imaging surface of the imaging module 82. Specifically, the lens module 81 includes a first lens group 811 and a second lens group 812, and the first lens group 811 and the second lens group 812 are sequentially arranged along the optical axis direction.

[0145] In a specific embodiment, the first lens group 811 is a fixed lens group, and the second lens group 812 is a focusing lens group, that is, the first lens group 811 is fixed to the base 91, and the second lens group 812 is carried on the movable lens carrier, and the movable lens carrier is driven by the focusing drive component to carry the second lens group 812 to move along the second direction, and then the optical focusing function of the camera module 2 is realized by adjusting the relative position of the first lens group 811 and the second lens group 812. In addition, the relative position of the second lens group 812 and the imaging surface of the imaging module 82 can also be adjusted to switch the imaging mode of the camera module 2.

[0146] It should be understood that the lens module 81 may also include a third lens group and / or a fourth lens group, and the third lens group and / or the fourth lens group may move along the second direction to achieve an optical zoom function, and the present application does not impose any specific restrictions on this.

[0147] In some embodiments, the imaging module 82 includes a chip circuit board, a photosensitive chip and a plurality of electronic components. Specifically, the photosensitive chip and the plurality of electronic components are electrically connected to the chip circuit board, and the photosensitive chip is used to receive the external light collected by the reflection module 1 for imaging, and is electrically connected to an external electronic device through the chip circuit board. It should be understood that the plurality of electronic components include but are not limited to passive electronic devices such as resistors and capacitors, and driver chips, storage chips, etc.

[0148] Furthermore, the imaging module 82 also includes a filter assembly, which includes a filter element, which is held on the light sensing path of the photosensitive chip and is disposed between the lens module 81 and the photosensitive chip. It should be understood that the filter element is used to filter the incident light entering the photosensitive chip to filter out stray light such as infrared light that is not necessary for imaging in the incident light.

[0149] Furthermore, the filter assembly also includes a filter element mounting frame, and the filter element is mounted and fixed on the filter element mounting frame and corresponds to at least the photosensitive area of ​​the photosensitive chip. Specifically, the filter element mounting frame has a light hole, and the incident light passing through the lens module 81 is incident on the photosensitive chip through the light hole. The filter element can be attached to the filter element mounting frame positively or invertedly.

[0150] In a specific embodiment, the filter element mounting frame is fixed to the chip circuit board. It is worth mentioning that the imaging module 82 is fixed to the image side of the filter element through the filter element mounting frame; the imaging module 82 can also be fixed to the image side of the filter element through the chip circuit board, and this application does not make specific restrictions on this.

[0151] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A reflection module, characterized in that: include: A reflective element, the reflective element comprising a reflective surface and a matching surface, the reflective surface being used to reflect light propagating along the first optical axis to propagate along the second optical axis; A movable carrier, used for carrying a reflective element; a reinforcement member, the reinforcement member being arranged between the reflective element and the movable carrier so as to fix the reflective element to the movable carrier, the reinforcement member comprising an integrally formed first fixing portion, a second fixing portion and a partition gap, the first fixing portion being used for fixing to the movable carrier, the second fixing portion being used for fixing to the matching surface of the reflective element, the first fixing portion being located at an outer peripheral side of the second fixing portion, and a projection of a fixing area of ​​the first fixing portion and the movable carrier and a projection of a fixing area of ​​the second fixing portion and the matching surface being staggered in a thickness direction of the reflective element; The partition gap is located at the inner side of the first fixing part, so that the partition gap is arranged between the first fixing part and the second fixing part, or is arranged on the second fixing part, so as to isolate the first fixing part from the reflective element.

2. The reflection module according to claim 1, characterized in that: Along the thickness direction of the reflective element, there is a first gap between the reinforcement and the movable carrier, and a second gap between the reinforcement and the mating surface. Along the thickness direction of the reflective element, the projection of the first gap and the projection of the second gap are staggered.

3. The reflection module according to claim 2, characterized in that: The first fixing portion and the second fixing portion extend in the same plane, the first fixing portion is bonded to the movable carrier through a first adhesive, and the first gap is located in the middle of the first adhesive; the second fixing portion is bonded to the mating surface through a second adhesive, defining the second gap between the reinforcement and the mating surface, and the second gap is located at the periphery of the second adhesive, so that the projection of the first gap and the projection of the second gap are staggered.

4. The reflection module according to claim 1, characterized in that: The partition gap penetrates the reinforcement member along the thickness direction of the reinforcement member, the partition gap is arranged around the second fixing portion, and is located between the first fixing portion and the second fixing portion; the first fixing portion is suitable for being fixedly connected to the movable carrier, and the second fixing portion is suitable for being fixedly connected to the mating surface.

5. The reflection module according to claim 4, characterized in that: The partition gap includes a plurality of partition areas arranged at intervals, and each of the partition areas is distributed at intervals on the outer periphery of the second fixing portion to separate the first fixing portion from the second fixing portion.

6. The reflection module according to claim 1, characterized in that: The partition gap includes a plurality of partition areas arranged at intervals, at least some of the partition areas are distributed at intervals on the second fixed portion, and along the thickness direction of the reflective element, the center of the projection area of ​​the mating surface on the reinforcement is defined as a central area, the area of ​​the central area is 20% to 30% of the total area of ​​the projection area, and the central area at least partially overlaps with the partition area.

7. The reflection module according to claim 6, characterized in that: Each of the partition areas extends along the second direction, and each of the partition areas is spaced apart along the first direction. The size of the partition area along the first direction is recorded as X1, the distance between two adjacent partition areas is recorded as X2, and the distance from the partition area closest to the short side of the reinforcement to the short side of the reinforcement is recorded as X3, and X2 satisfies: 3X1≤X2≤6X1, or 0.5mm≤X2≤2mm, or 0.05X≤X2≤0.2X; X3 satisfies: X3≥X2; Alternatively, each of the partition areas extends along the first direction, and each of the partition areas is spaced apart along the second direction. The size of the partition area along the first direction is recorded as Y1, the distance between two adjacent partition areas is recorded as Y2, and the distance from the partition area closest to the short side of the reinforcement to the short side of the reinforcement is recorded as Y3, and Y2 satisfies: 3Y1≤Y2≤6Y1, or 0.5mm≤Y2≤2mm, or 0.06Y≤Y2≤0.25Y; Y3 satisfies: Y3≥Y2; Wherein, X is the dimension of the matching surface of the reflective element along the first direction, and Y is the dimension of the matching surface along the second direction. The first direction is parallel to the long side of the reinforcement, and the second direction is parallel to the short side of the reinforcement.

8. The reflection module according to claim 6, characterized in that: Each of the partition areas is circular, and at least a portion of the partition areas are distributed in an array on the second fixing portion.

9. The reflection module according to any one of claims 1 to 8, characterized in that: The reinforcement also includes a supporting portion, which is capable of connecting the first fixing portion and the second fixing portion so that the plane where the first fixing portion is located is skewed and parallel to the plane where the second fixing portion is located, and in the thickness direction of the reinforcement, the projection of the first fixing portion and the projection of the second fixing portion do not overlap, and the partition gap is arranged around the edge of the second fixing portion; the first fixing portion is bonded to the movable carrier through a first adhesive; and the second fixing portion is bonded to the mating surface through a second adhesive.

10. The reflection module according to any one of claims 1 to 8, characterized in that: The movable carrier includes a carrier mounting wall, a first carrier side wall and a second carrier side wall. The carrier mounting wall is arranged at an angle to define a mounting surface on the surface of the carrier mounting wall facing the reflective element. The mounting surface is suitable for being bonded and fixed to the first fixing portion. The first carrier side wall and the second carrier side wall are located on opposite sides of the carrier mounting wall at intervals along a third axis direction. An accommodating cavity is formed between the first carrier side wall, the second carrier side wall and the mounting surface, and the accommodating cavity is used to accommodate the reflective element.

11. The reflection module according to claim 10, characterized in that: The thickness of the reinforcement member is denoted as H, the thickness of the carrier mounting wall is denoted as L, and the thickness of the reflective element is denoted as T, satisfying: L≤H≤T.

12. The reflection module according to any one of claims 1 to 8, characterized in that: The reinforcement also includes an embedding portion, which is bent and extended from the first fixing portion toward the movable carrier and embedded in the movable carrier. At least part of the first fixing portion is embedded in the movable carrier so that the first fixing portion and the movable carrier are embedded, and the second fixing portion is bonded to the mating surface via a second adhesive.

13. The reflection module according to claim 12, characterized in that: The movable carrier includes a carrier bottom wall, a first carrier side wall, a second carrier side wall and a carrier back wall, the carrier bottom wall is arranged perpendicular to the first optical axis, the first carrier side wall and the second carrier side wall are located on opposite sides of the carrier bottom wall along a third axis direction, and the carrier back wall connects the first carrier side wall and the second carrier side wall; the reinforcement is obliquely arranged between the first carrier side wall and the second carrier side wall, the second fixing portion of the reinforcement is spaced apart from the carrier bottom wall along the first optical axis direction, the second fixing portion of the reinforcement is spaced apart from the carrier back wall along the second optical axis direction, and the engaging portion of the reinforcement is embedded in at least one of the carrier bottom wall, the first carrier side wall, the second carrier side wall and the carrier back wall, wherein the third axis is perpendicular to the first optical axis and the second optical axis.

14. The reflection module according to any one of claims 1 to 8, characterized in that: At least one of the following conditions is met: The area of ​​the first fixing portion is recorded as N1, and the area of ​​the second fixing portion is recorded as N2, satisfying: N1≥0.5N2; The area of ​​the matching surface of the reflective element is denoted as M, and the area of ​​the matching surface bonded to the second fixing portion is denoted as M1, 0.3M≤M1≤0.7M; The thermal expansion coefficient of the reflective element is denoted as C1, the thermal expansion coefficient of the reinforcement is denoted as C2, and 0.25C2≤C1≤0.75C2.

15. The reflection module according to any one of claims 1 to 8, characterized in that: The reflection module also includes a bracket, a first lens and a second lens. The bracket is fixed to the movable carrier so as to be suitable for moving synchronously with the movable carrier. The first lens is carried by the bracket to be arranged opposite to the reflection element along the first optical axis. The second lens is carried by the bracket to be arranged opposite to the reflection element along the second optical axis.

16. A camera module, characterized in that: include: The reflection module as claimed in any one of claims 1 to 15; a lens module, wherein the lens module is held on a light reflection path of the reflection module; as well as An imaging module, which receives the light emitted by the lens module to perform imaging; A base, wherein the base has a containing cavity, and the reflection module and the lens module are arranged in the containing cavity; A shell is covered on the base.

Images