A reflection module and an imaging module thereof

Abstract

The present invention discloses a reflection module and an imaging module thereof. The reflection module includes: a reflection element, including a reflection surface and a mating surface, the reflection surface being configured to reflect light propagating along a first optical axis to propagate along a second optical axis; a movable carrier for carrying the reflection element; a reinforcing member disposed between the reflection element and the movable carrier to fix the reflection element to the movable carrier. The reinforcing member includes an integrally formed first fixing portion, a second fixing portion, and a partition gap. The first fixing portion is used for fixedly connecting with the movable carrier, the second fixing portion is used for fixedly connecting with the mating 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 fixed connection area between the first fixing portion and the movable carrier and the projection of the fixed connection area between the second fixing portion and the mating surface are arranged in a staggered manner; the partition gap is located inside the first fixing portion to isolate the first fixing portion from the reflection element.

Description

Technical Field

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

[0002] A camera module is an essential part of a mobile electronic device. With the further development of camera module technology, users' requirements for camera modules have become increasingly refined. A periscope camera module usually needs to achieve complex light reflection and turning within a limited space to realize a high-magnification zoom function. Therefore, the stability and reliability of the reflection module are crucial for the performance of the entire periscope camera module. If the reflection element of the reflection module is deformed when subjected to an external force, it will cause light to be difficult to propagate along the expected path, resulting in an increase in aberration; uneven deformation will also cause light at different positions to deviate to different degrees, resulting in the bending of the image field.

[0003] In related technologies, the reflection element of a periscope camera module is usually fixed to a movable carrier by an adhesive bonding method. However, during the thermal curing process of the adhesive, the heat deformation of the movable carrier will affect the reflection element, causing the reflection surface of the reflection element to deform, resulting in a large deviation between the propagation path of light and the expected path, and further 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 beneficial to avoiding the deformation of the reflection element when it is fixed to the movable carrier, thereby improving the stability and reliability of the reflection module.

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

[0006] To achieve at least one of the above objects, the technical solution adopted by the present invention is as follows: A reflection module includes: a reflection element, the reflection element includes a reflection surface and a mating surface, the reflection surface is used to reflect the light propagating along the first optical axis to propagate along the second optical axis; a movable carrier for carrying the reflection element; a reinforcing member, the reinforcing member is disposed between the reflection element and the movable carrier, so that the reflection element is fixed to the movable carrier, the reinforcing member includes 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 mating surface of the reflection element, the first fixing portion is located on the outer peripheral side of the second fixing portion, in the thickness direction of the reflection element, the projection of the fixed connection area between the first fixing portion and the movable carrier and the projection of the fixed connection area between the second fixing portion and the mating surface are arranged in a dislocation manner; the partition gap is located inside the first fixing portion, so that the partition gap is arranged between the first fixing portion and the second fixing portion, or arranged on the second fixing portion, so as to isolate the first fixing portion from the reflection element.

[0007] As a preference, in the thickness direction of the reflection element, there is a first gap between the reinforcing member and the movable carrier, and there is a second gap between the reinforcing member and the mating surface, in the thickness direction of the reflection element, the projection of the first gap and the projection of the second gap are arranged in a dislocation manner.

[0008] As a preference, 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 bonding member, and the first gap is located in the middle of the first bonding member; the second fixing portion is bonded to the mating surface through a second bonding member, defining the second gap between the reinforcing member and the mating surface, and the second gap is located on the outer periphery of the second bonding member, so that the projection of the first gap and the projection of the second gap are arranged in a dislocation manner.

[0009] As a preference, the partition gap penetrates through the reinforcing member in the thickness direction of the reinforcing 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 adapted to be fixedly connected to the movable carrier, and the second fixing portion is adapted to be fixedly connected to the mating surface.

[0010] As a preference, the partition gap includes a plurality of partition regions arranged at intervals, and each of the partition regions is distributed at intervals on the outer periphery of the second fixing portion, so as to separate the first fixing portion and the second fixing portion.

[0011] As a preference, the partition gaps include a plurality of partition areas arranged at intervals, at least some of the partition areas are distributed on the second fixing part at intervals, in the thickness direction of the reflecting element, the central area is defined in the center of the projection area of the mating surface on the reinforcing member, the area of the central area is 20% - 30% of the total area of the projection area, and at least part of the central area overlaps with the partition areas.

[0012] As a preference, each of the partition areas extends in the second direction, and the partition areas are arranged at intervals in the first direction. The dimension of the partition area in the first direction is denoted as X. 1 The distance between two adjacent partition areas is denoted as X. 2 The distance from the partition area closest to the short side of the reinforcing member to the short side of the reinforcing member is denoted as X. 3 X 2 Satisfies: 3X 1 ≤ X 2 ≤ 6X 1 Or 0.5 mm ≤ X 2 ≤ 2 mm, or 0.05X ≤ X 2 ≤ 0.2X; X 3 Satisfies: X 3 ≥ X 2 ; Or, each of the partition areas extends in the first direction, and the partition areas are arranged at intervals in the second direction. The dimension of the partition area in the first direction is denoted as Y. 1 The distance between two adjacent partition areas is denoted as Y. 2 The distance from the partition area closest to the short side of the reinforcing member to the short side of the reinforcing member is denoted as Y. 3 Y 2 Satisfies: 3Y 1 ≤ Y 2 ≤ 6Y 1 Or 0.5 mm ≤ Y 2 ≤ 2 mm, or 0.06Y ≤ Y 2 ≤ 0.25Y; Y 3 Satisfies: Y 3 ≥ Y 2 ; Wherein, X is the dimension of the mating surface of the reflecting element in the first direction, Y is the dimension of the mating surface in the second direction, the first direction is parallel to the long side of the reinforcing member, and the second direction is parallel to the short side of the reinforcing member.

[0013] As a preference, each of the partition areas is circular, and at least some of the partition areas are distributed in an array on the second fixing part.

[0014] As a preference, the reinforcing member further includes a supporting portion, and the supporting portion is configured to connect the first fixing portion and the second fixing portion, such that the plane where the first fixing portion is located and the plane where the second fixing portion is located are skew and parallel to each other. In the thickness direction of the reinforcing member, the projection of the first fixing portion does not overlap with the projection of the second fixing portion, and the partition gap is disposed around the edge of the second fixing portion; the first fixing portion is adhered to the movable carrier by a first adhesive; the second fixing portion is adhered to the mating surface by a second adhesive.

[0015] As a preference, 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, defining a mounting surface on the surface of the carrier mounting wall facing the reflecting element. The mounting surface is adapted to be adhesively fixed to the first fixing portion. The first carrier side wall and the second carrier side wall are spaced apart from each other along a third axis on opposite sides of the carrier mounting wall. An accommodation cavity is formed among the first carrier side wall, the second carrier side wall, and the mounting surface, and the accommodation cavity is configured to accommodate the reflecting element.

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

[0017] As a preference, the reinforcing member further includes a fitting portion, and the fitting portion bends and extends from the first fixing portion toward the movable carrier and is embedded in the movable carrier. At least a part of the first fixing portion is embedded in the movable carrier, such that the first fixing portion and the movable carrier are fitted together, and the second fixing portion is adhered to the mating surface by a second adhesive.

[0018] As a preference, 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 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. The carrier back wall connects the first carrier side wall and the second carrier side wall; the reinforcing member is inclined between the first carrier side wall and the second carrier side wall. The second fixing portion of the reinforcing member is spaced apart from the carrier bottom wall along the first optical axis direction, and the second fixing portion of the reinforcing member is spaced apart from the carrier back wall along the second optical axis direction. The fitting portion of the reinforcing member 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 reflecting module satisfies at least one of the following conditions: the area of the first fixing portion is denoted as N1 The area of the second fixing part is denoted as N 2 , satisfying: N 1 ≥0.5N 2 ; The area of the mating surface of the reflecting element is denoted as M, and the area of the mating surface bonded to the second fixing part is denoted as M 1 , 0.3M ≤ M 1 ≤0.7M; The coefficient of thermal expansion of the reflecting element is denoted as C 1 , and the coefficient of thermal expansion of the reinforcing member is denoted as C 2 , 0.25C 2 ≤C 1 ≤0.75C 2 .

[0020] As a preference, the reflection module further includes a bracket, a first lens and a second lens. The bracket is fixed to the movable carrier to be adapted to move synchronously with the movable carrier. The first lens is carried by the bracket to be disposed opposite to the reflecting element along a first optical axis. The second lens is carried by the bracket to be disposed opposite to the reflecting element along a second optical axis.

[0021] To achieve at least one of the above objects, the technical solution adopted by the present invention is: An imaging module, comprising: the 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 receiving cavity, the reflection module and the lens module are disposed in the receiving cavity; a housing, the housing covers the base.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The first fixing part of the reinforcing member is fixedly connected to the movable carrier, and the second fixing part is fixedly connected to the mating surface of the reflecting element. The partition gap is located inside the first fixing part. That is to say, the partition gap is provided between the first fixing part and the second fixing part, or provided on the second fixing part, so as to play a role in isolating the first fixing part and the reflecting element. Further, when the movable carrier is heated, the force generated by the deformation of the movable carrier will be applied to the first fixing part. Further, stress can be absorbed through the first fixing part and the second fixing part, and the partition gap is beneficial to further avoid stress transmission to the reflecting element, thereby reducing the influence of the force generated by the deformation of the movable carrier on the reflecting element, and being beneficial to improving the reliability and stability of the reflection module.

[0024] (2) Especially when the first fixing part is fixedly connected to the movable carrier through an adhesive, and the second fixing part is fixedly connected to the mating surface of the reflecting element through an adhesive, the projection of the fixed connection area between the first fixing part and the movable carrier and the projection of the fixed connection area between the second fixing part and the mating surface are arranged in a dislocation manner. That is to say, the projection of the fixed connection area between the first fixing part and the movable carrier and the projection of the fixed connection area between the second fixing part and the mating surface do not overlap, which is conducive to avoiding the accumulation of the curing stress of the adhesive in the thickness direction of the reflecting element. Further, in the direction parallel to the mating surface, the curing stress of the adhesive is dispersed by the partition gap, which is also conducive to avoiding the accumulation of the curing stress, and further improving the reliability and stability of the reflection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded view of a reflection module according to some embodiments of the present application.

[0026] Figure 2 is a bonding schematic diagram of a reflecting element, a reinforcing member and a movable carrier according to some embodiments of the present application.

[0027] Figure 3 is a cross-sectional view of a reflection module according to some embodiments of the present application.

[0028] Figure 4 is a three-dimensional structural schematic diagram of a reinforcing member according to some embodiments of the present application.

[0029] Figure 5 is a three-dimensional structural schematic diagram of a reinforcing member according to some other embodiments of the present application.

[0030] Figure 6 is a three-dimensional structural schematic diagram of a reinforcing member according to some other embodiments of the present application.

[0031] Figure 7 is a schematic diagram of the partition area setting of the reinforcing member according to Embodiment 1 of the present application.

[0032] Figure 8 is a schematic diagram of the partition area setting of the reinforcing member according to Embodiment 2 of the present application.

[0033] Figure 9 is a schematic diagram of the partition area setting of the reinforcing member according to Embodiment 3 of the present application.

[0034] Figure 10 is a schematic diagram of the partition area setting of the reinforcing member according to Embodiment 4 of the present application.

[0035] Figure 11 is a schematic diagram of the partition area setting of the reinforcing member according to Embodiment 5 of the present application.

[0036] Figure 12 Schematic diagram of another partition area of the reinforcement member according to Embodiment 5 of the present application.

[0037] Figure 13 Schematic diagram of the partition area of the reinforcement member according to Embodiment 6 of the present application.

[0038] Figure 14 Schematic diagram of the partition area of the reinforcement member according to Embodiment 7 of the present application.

[0039] Figure 15 Schematic diagram of another partition area of the reinforcement member according to Embodiment 7 of the present application.

[0040] Figure 16 Schematic diagram of the partition area of the reinforcement member according to Embodiment 8 of the present application.

[0041] Figure 17 Schematic diagram of the partition area of the reinforcement member according to Embodiment 9 of the present application.

[0042] Figure 18 Schematic diagram of another partition area of the reinforcement member according to Embodiment 9 of the present application.

[0043] Figure 19 Schematic diagram of the partition area of the reinforcement member according to Embodiment 10 of the present application.

[0044] Figure 20 Schematic diagram of the partition area of the reinforcement member according to Embodiment 11 of the present application.

[0045] Figure 21 Schematic diagram of the partition area of the reinforcement member according to Embodiment 12 of the present application.

[0046] Figure 22 Schematic diagram of the three-dimensional structure of the reinforcement member according to Embodiment 13 of the present application.

[0047] Figure 23 Schematic diagram of the three-dimensional structure of the reinforcement member according to Embodiment 14 of the present application.

[0048] Figure 24 Schematic diagram of the three-dimensional structure of the reinforcement member according to Embodiment 15 of the present application.

[0049] Figure 25 Schematic diagram of the three-dimensional structure of another reinforcement member according to Embodiment 15 of the present application.

[0050] Figure 26 Cross-sectional view of the camera module according to some embodiments of the present application.

[0051] In the figure: 1. Reflection module; 10. Reflection element; 11. Reflecting surface; 12. Fitting 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. Accommodation cavity; 30. Reinforcing member; 31. First fixing portion; 32. Second fixing portion; 33. Partition gap; 331. Partition area; 34. Support portion; 35. Fitting portion; 351. First fitting portion; 352. Second fitting portion; 353. Third fitting portion; 41. First gap; 42. Second gap; 51. First adhesive; 52. Second adhesive; 60. Bracket; 71. First lens; 72. Second lens; 2. Camera module; 81. Lens module; 811. First lens group; 812. Second lens group; 82. Imaging module; 91. Base; 911. Accommodation cavity; 92. Housing. Detailed implementation manners

[0052] Next, in combination with the detailed implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0053] In the description of the present invention, it should be noted that for orientation terms, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0054] 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 do not necessarily have to be used to describe a specific order or sequence.

[0055] The terms "comprising" and "having" and any variations thereof in the description and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0056] A reflection module 1, such as Figures 1 - 25As shown in the figure, it includes: a reflection element 10, a movable carrier 20, and a reinforcement member 30. The reflection element 10 includes a reflection surface 11 and a mating surface 12. The reflection 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 reflection element 10 to drive the reflection element 10 to rotate around an axis parallel to the first optical axis OA1, or rotate around an axis parallel to the second optical axis OA2, or rotate around a third axis A3, where the third axis A3 is perpendicular to the first optical axis OA1 and the second optical axis OA2. The reinforcement member 30 is disposed between the reflection element 10 and the movable carrier 20 to fix the reflection element 10 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 reflection element 10. The first fixing portion 31 is located on the outer peripheral side of the second fixing portion 32. In the thickness direction of the reflection element 10, the projection of the fixed connection area between the first fixing portion 31 and the movable carrier 20 is arranged in a staggered manner with the projection of the fixed connection area between the second fixing portion 32 and the mating surface 12; the partition gap 33 is located inside the first fixing portion 31 so that the partition gap 33 is disposed between the first fixing portion 31 and the second fixing portion 32, or disposed on the second fixing portion 32 to isolate the first fixing portion 31 from the reflection element 10.

[0057] Specifically, during the manufacturing and use of the reflection module 1, the reflection element 10 and the movable carrier 20 may expand and contract due to heat. For example, when the reflection element 10 is fixed to the movable carrier 20 using an adhesive, if an ultraviolet light-curing glue is used, the reflection surface 11 of the reflection element 10 will reflect the ultraviolet light, making it difficult for the ultraviolet light to irradiate between the reflection element 10 and the movable carrier 20. Moreover, the bonding strength of the ultraviolet light-curing glue is relatively low. Therefore, a heat-curing glue is usually used to bond the reflection element 10 to the movable carrier 20. It should be understood that during the heat-curing process, the movable carrier 20 needs to be heated, thereby causing the movable carrier 20 and the reflection element 10 to expand and contract. Another example is that the drive coil in the drive assembly for driving the movement of the movable carrier 20 generates heat when energized, and this heat will also be transferred to the movable carrier 20, thereby causing the movable carrier 20 and the reflection element 10 to expand and contract.

[0058] Furthermore, due to the different coefficients of thermal expansion of the reflecting element 10 and the movable carrier 20, during the heating and cooling processes, that is, when the temperature changes, the degrees of deformation of the reflecting element 10 and the movable carrier 20 are also different. If the reflecting element 10 is directly bonded to the movable carrier 20, stress may be generated between the reflecting element 10 and the movable carrier 20, which may cause the reflecting surface 11 of the reflecting element 10 to deform. For example, the reflecting surface 11 bulges, sags, or deforms unevenly, making it difficult for the light reflected by the reflecting surface 11 to propagate along the expected path, resulting in a decrease in the imaging quality of the imaging module 2.

[0059] In this embodiment, the first fixing portion 31 of the reinforcing member 30 is fixedly connected to the movable carrier 20, and the second fixing portion 32 is fixedly connected to the mating surface 12 of the reflecting element 10. The partition gap 33 is located inside the first fixing portion 31. That is to say, the partition gap 33 is provided between the first fixing portion 31 and the second fixing portion 32, or provided on the second fixing portion 32, which can play a role in isolating the first fixing portion 31 and the reflecting element 10. Further, when the movable carrier 20 is heated, the acting force generated by the deformation of the movable carrier 20 will be applied to the first fixing portion 31. Further, stress can be absorbed through the first fixing portion 31 and the second fixing portion 32, and the partition gap 33 is beneficial to further prevent stress from being transmitted to the reflecting element 10, thereby reducing the influence of the acting force generated by the deformation of the movable carrier 20 on the reflecting element 10, reducing the deformation of the reflecting surface 11, and being beneficial to keeping the reflecting surface 11 in the expected surface shape, which is beneficial to improving the reliability and stability of the reflecting module 1.

[0060] Especially when the first fixing portion 31 is fixedly connected to the movable carrier 20 through an adhesive, and the second fixing portion 32 is fixedly connected to the mating surface 12 of the reflecting element 10 through an adhesive, the projection of the fixed connection area between the first fixing portion 31 and the movable carrier 20 is arranged in a staggered manner with the projection of the fixed connection area between the second fixing portion 32 and the mating surface 12. That is to say, the projection of the fixed connection area between the first fixing portion 31 and the movable carrier 20 does not overlap with the projection of the fixed connection area between the second fixing portion 32 and the mating surface 12, which is beneficial to avoiding the accumulation of the curing stress of the adhesive in the thickness direction of the reinforcing member 30. Further, in the direction parallel to the mating surface 12, the curing stress of the adhesive is dispersed by the partition gap 33, which is also beneficial to avoiding the accumulation of the curing stress, and further improving the reliability and stability of the reflecting module 1.

[0061] 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, beneficial to increasing the area of the first fixing portion 31 for fixedly connecting with the movable carrier 20, thereby improving the connection strength and connection reliability between the reinforcing member 30 and the movable carrier 20.

[0062] It is worth mentioning that, as Figure 2 shown, the area of the mating surface 12 of the reflecting element 10 can be larger than the area of the second fixing portion 32. That is to say, along the height direction of the reflecting element 10, the projection of the mating surface 12 can extend to the first fixing portion 31 of the reinforcing member 30, thereby making full use of the space inside the reflecting module 1, making the structure between the reflecting element 10, the reinforcing member 30 and the movable carrier 20 more compact, and on the basis of ensuring that the overall size of the reflecting module 1 is smaller, increasing the volume of the reflecting element 10, which is conducive to increasing the area of the reflecting surface 11, improving the light incident amount of the imaging module 2, and reducing light loss.

[0063] In some embodiments, as Figure 2 shown, along the thickness direction of the reflecting element 10, there is a first gap 41 between the reinforcing member 30 and the movable carrier 20, and there is a second gap 42 between the reinforcing member 30 and the mating surface 12. Along the thickness direction of the reflecting element 10, the projections of the first gap 41 and the second gap 42 are arranged in a staggered manner.

[0064] It should be understood that the first gap 41 can provide a space for deformation for the reinforcing member 30 and the movable carrier 20. Specifically, on the reinforcing member 30, except for the part of the first fixing portion 31 that is fixedly connected to the movable carrier 20, there is a first gap 41 between the other parts of the reinforcing member 30 and the movable carrier 20. Therefore, in the case where the reinforcing member 30 and the movable carrier 20 deform due to temperature change, it is beneficial to avoid the transmission of stress caused by the contact between the reinforcing member 30 and the movable carrier 20.

[0065] Similarly, the second gap 42 can provide a space for deformation for the reinforcing member 30 and the reflecting element 10. Specifically, on the reinforcing member 30, except for the part of the second fixing portion 32 that is fixedly connected to the mating surface 12, there is a second gap 42 between the other parts of the reinforcing member 30 and the reflecting element 10. Therefore, in the case where the reinforcing member 30 and the reflecting element 10 deform due to temperature change, it is beneficial to avoid the transmission of stress caused by the contact between the reinforcing member 30 and the reflecting element 10.

[0066] Furthermore, along the thickness direction of the reflecting element 10, the projections of the fixed connection areas of the first fixing portion 31 and the movable carrier 20 do not overlap with the projections of the fixed connection areas of the second fixing portion 32 and the mating surface 12, so that the projections of the first gap 41 and the second gap 42 are arranged in a staggered manner. That is to say, the projection positions of the first gap 41 and the second gap 42 do not completely overlap, which is beneficial to making the stress on the reinforcing member 30 more dispersed, reducing stress concentration, avoiding fatigue damage of the reinforcing member 30, and prolonging the service life of the reinforcing member 30.

[0067] In some embodiments, asFigure 1 and Figure 2 As shown in Figure 2 , the first fixing part 31 and the second fixing part 32 extend in the same plane. The first fixing part 31 is bonded to the movable carrier 20 through the first bonding member 51, and the first gap 41 is located in the middle of the first bonding member 51. The second fixing part 32 is bonded to the mating surface 12 through the second bonding member 52, and the second gap 42 is defined between the reinforcing member 30 and the mating surface 12. The second gap 42 is located on the outer periphery of the second bonding member 52, so that the projections of the first gap 41 and the second gap 42 are arranged in a staggered manner.

[0068] Specifically, the first fixing part 31 is bonded to the movable carrier 20 through an adhesive, and thus the first bonding member 51 is formed between the first fixing part 31 and the movable carrier 20. The second fixing part 32 is bonded to the mating surface 12 through an adhesive, and thus the second bonding member 52 is formed between the second fixing part 32 and the mating surface 12.

[0069] It should be understood that the first bonding member 51 has a certain height, and thus the first gap 41 is formed between the reinforcing member 30 and the movable carrier 20. Combining the foregoing, the first fixing part 31 is located on the outer peripheral side of the second fixing part 32. Therefore, the second gap 42 is located in the middle of the first bonding member 51. That is to say, in the thickness direction of the reflecting element 10, the projection of the second fixing part 32 falls within the area enclosed by the projection of the first bonding member 51, and the projection of the second fixing part 32 does not coincide with the projection of the first bonding member 51, and the first gap 41 is defined between the second fixing part 32 and the movable carrier 20. It is worth mentioning that a first gap 41 is also formed between the part of the first fixing part 31 where the first bonding member 51 is not provided and the movable carrier 20.

[0070] Furthermore, combining the foregoing, the second fixing part 32 is used to bond to the mating surface 12 of the reflecting element 10. In the case where the reinforcing member 30 and the movable carrier 20 are deformed due to temperature change, the first gap 41 is beneficial to avoid contact between the reinforcing member 30 and the movable carrier 20. That is to say, it is beneficial to avoid the deformation of the movable carrier 20 being transmitted to the reflecting element 10 through the second fixing part 32 and the second bonding member 52 that are in contact with the movable carrier 20 in sequence. Furthermore, it is beneficial to reduce the deformation of the reflecting surface 11 of the reflecting element 10, and the stability and reliability of the reflecting module 1 can be improved.

[0071] It should be understood that the second bonding member 52 has a certain height, so as to form a second gap 42 between the reinforcing member 30 and the reflecting element 10. As described above, the area of the mating surface 12 of the reflecting element 10 is larger than the area of the second fixing portion 32. That is to say, at least part of the reflecting element 10 is disposed opposite to the first fixing portion 31, and the second gap 42 is defined between the first fixing portion 31 and the reflecting element 10. It is worth mentioning that a second gap 42 is also formed between the portion of the second fixing portion 32 without the second bonding member 52 and the reflecting element 10.

[0072] Furthermore, as described above, the first fixing portion 31 is used for bonding with the movable carrier 20. In the case where the reinforcing member 30 and the reflecting element 10 are deformed due to temperature changes, the second gap 42 is beneficial to avoid contact between the reinforcing member 30 and the reflecting element 10. That is to say, it is beneficial to avoid the stress generated by the deformation of the reinforcing member 30 being transmitted to the reflecting element 10 through parts other than the second bonding member 52, and thus it is beneficial to reduce the deformation of the reflecting surface 11 of the reflecting element 10, so as to improve the stability and reliability of the reflecting module 1.

[0073] In some embodiments, as Figures 4 - 23 shown, the partition gap 33 penetrates through the reinforcing member 30 along the thickness direction of the reinforcing member 30. The partition gap 33 is disposed 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 adapted to be fixedly connected to the movable carrier 20, and the second fixing portion 32 is adapted to be fixedly connected to the mating surface 12. That is to say, the adhesive is disposed between the mating surface 12 and the second fixing portion 32, so that the reflecting element 10 is connected to the reinforcing member 30, and there is no adhesive between the mating surface 12 and the first fixing portion 31, that is, the reflecting element 10 and the first fixing portion 31 are not directly connected, which is beneficial to avoid the deformation and stress of the first fixing portion 31 being transmitted to the reflecting module 1.

[0074] It should be understood that the partition gap 33 is disposed around the second fixing portion 32, which is beneficial to isolate the second fixing portion 32 and the first fixing portion 31 in multiple directions. Furthermore, it is beneficial to avoid the stress of the first fixing portion 31 being transmitted to the second fixing portion 32 from multiple directions, so as to reduce the influence of the stress on the movable carrier 20 and the first fixing portion 31 on the second fixing portion 32 and the reflecting element 10, and is beneficial to reducing or even avoiding the deformation of the reflecting surface 11 of the reflecting element 10, so as to improve the reliability and stability of the reflecting module 1.

[0075] In some embodiments, as Figures 7 - 21As shown, the partition gap 33 includes a plurality of partition areas 331 arranged at intervals. Each partition area 331 is distributed at intervals on the outer periphery of the second fixing part 32, so as to separate the first fixing part 31 and the second fixing part 32. Specifically, the arrangement of each partition area 331 is rotationally symmetric with respect to the geometric center of the reinforcing member 30, or the arrangement of each partition area 331 is symmetric with respect to the median line parallel to the long side direction of the reinforcing member 30, or the arrangement of each partition area 331 is symmetric with respect to the median line parallel to the short side direction of the reinforcing member 30. Thus, the force on the reinforcing member 30 is more balanced, which is beneficial to avoiding stress concentration.

[0076] Several embodiments are provided below for further understanding of the technology of the present application. In the following embodiments, the reinforcing member 30 has two opposite long sides, which are denoted as the first side and the second side for convenience of description; the reinforcing member 30 has two opposite short sides, which are denoted as the third side and the fourth side for convenience of description.

[0077]

Embodiment 1

[0078] As Figure 7 shown, the reinforcing member 30 has four "one"-shaped partition areas 331. Each partition area 331 is respectively arranged parallel to one of the first side to the fourth side. A first fixing part 31 is defined between the partition area 331 and the corresponding side, and a second fixing part 32 is defined in the middle area between the four partition areas 331. It should be understood that the first fixing part 31 and the second fixing part 32 can be isolated by the four partition areas 331, which is beneficial to reducing the influence of the stress on the first fixing part 31 on the four sides on the second fixing part 32 in the middle area, and reducing the influence on the reflecting surface 11 of the reflecting element 10.

[0079]

Embodiment 2

[0080] As Figure 8 shown, the difference between Embodiment 2 and Embodiment 1 is that each of the first side to the fourth side corresponds to two equally long partition areas 331 arranged at intervals along the direction perpendicular to the extension direction of the side. On the basis of ensuring the structural strength of the reinforcing member 30, the isolation distance between the first fixing part 31 and the second fixing part 32 can be increased, which is beneficial to further reducing the influence of the stress on the first fixing part 31 on the second fixing part 32, and reducing the influence on the reflecting surface 11 of the reflecting element 10. It is worth mentioning that by arranging two spaced partition areas 331 near each side, it is beneficial to increase the elastic coefficient of the second fixing part 32, and thus the force deformation of the second fixing part 32 can be reduced.

[0081] It should be understood that each side can also correspond to three or more spaced partition areas 331, and the present application does not make specific restrictions on this.

[0082]

Embodiment 3

[0083] As shown in Figure 9 , the difference between Embodiment 3 and Embodiment 1 is that each of the first side and the second side corresponds to two partition areas 331 that are of equal length and spaced apart, and each of the third side and the fourth side corresponds to one partition area 331, which is conducive to playing a role in specifically compensating the stress concentration area. Specifically, the stress concentration points on the reinforcing member 30 may be close to the side with a smaller area of the partition area 331, that is to say, the stress concentration points on the reinforcing member 30 will be close to the third side and the fourth side, which is conducive to reducing the influence of stress on the areas of the second fixing portion 32 close to the first side and the second side, so as to reduce the influence of stress on the long side of the reflecting element 10, and further conducive to reducing the field curvature of the long side of the reflecting element 10. In addition, by adjusting the stress concentration position, the shape or position of the reflecting element 10 can also be adjusted to make the optical center of the reflecting element 10 coincide with or approach the expected optical center of the imaging module 2, which is conducive to improving the eccentricity problem.

[0084] It should be understood that according to the actual application, each of the first side and the second side may also correspond to one partition area 331, and each of the third side and the fourth side may correspond to two partition areas 331 that are of equal length and spaced apart. The present application does not make specific limitations on this.

[0085]

Embodiment 4

[0086] As shown in Figure 10 , the difference between Embodiment 4 and Embodiment 1 is that each of the first side to the fourth side corresponds to a plurality of partition areas 331 that are of equal length and spaced apart along the extending direction parallel to the side, and the partition areas 331 provided on the reinforcing member 30 are symmetric with respect to the median line of the reinforcing member 30 parallel to the long side direction, and symmetric with respect to the median line of the reinforcing member 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 symmetric along the two median lines, which is conducive to avoiding non-centered deformation of the second fixing portion 32, and further conducive to reducing astigmatism caused by uneven deformation of the reflecting surface 11 of the reflecting element 10, so as to improve the imaging quality of the imaging module 2.

[0087]

Embodiment 5

[0088] As shown in Figure 11 , the difference between Embodiment 5 and Embodiment 4 is that each partition area 331 is trapezoidal, the long side direction of the trapezoid is close to the first fixing portion 31, so that the first fixing portion 31 is adapted to generate a large deformation to release stress, and the short side direction of the trapezoid faces the second fixing portion 32, so that the second fixing portion 32 has a large stiffness to resist deformation, that is to say, the second fixing portion 32 is less likely to generate deformation, which is conducive to avoiding deformation of the reflecting element 10 connected to the second fixing portion 32.

[0089] It is worth mentioning that, as Figure 12 shown, the partition area 331 can also be in a "V" shape, "W" shape, etc., to achieve the above effects, and the present application does not make specific limitations on this.

[0090]

Embodiment 6

[0091] As Figure 13 shown, the reinforcing member 30 has four "L"-shaped partition areas 331, and each partition area 331 is located at the four corners of the reinforcing member 30 and extends to the middle section of 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, and further reduce the influence of stress on the corners of the reflecting element 10, which is beneficial to reduce the field curvature of the corners of the reflecting element 10, improve the reliability and stability of the reflection module 1, and improve the imaging quality of the imaging module 2.

[0092] Furthermore, the four "L"-shaped partition areas 331 are symmetric with respect to the midline of the reinforcing member 30 parallel to the long side direction, and symmetric with respect to the midline of the reinforcing member 30 parallel to the long side direction. Thus, the stress transmitted from the first fixing portion 31 to the second fixing portion 32 is symmetric along the two midlines, which is beneficial to avoid non-centered deformation of the second fixing portion 32, and further beneficial to reduce astigmatism caused by non-uniform deformation of the reflecting surface 11 of the reflecting element 10, and improve the imaging quality of the imaging module 2.

[0093]

Embodiment 7

[0094] As Figure 14 shown, Embodiment 7 combines Embodiment 4 and Embodiment 6. It is beneficial to avoid non-centered deformation of the second fixing portion 32, and further reduce astigmatism caused by non-uniform deformation of the reflecting surface 11 of the reflecting element 10. It is also beneficial to reduce the influence of stress on the corners of the reflecting element 10, and further reduce the field curvature of the corners of the reflecting element 10, which is beneficial to improve the reliability and stability of the reflection module 1, and improve the imaging quality of the imaging module 2.

[0095] Furthermore, as Figure 15 shown, a closed-loop path can also be formed between the partition areas 331, which is beneficial to further isolate the first fixing portion 31 and the second fixing portion 32, reduce the area of the stress concentration region on the reinforcing member 30, and further reduce the deformation of the second fixing portion 32 and the reflecting element 10 connected to the second fixing portion 32, which is beneficial to improve the reliability and stability of the reflection module 1.

[0096]

Embodiment 8

[0097] As Figure 16As shown, Embodiment 8 combines Embodiment 2 and Embodiment 6, which is beneficial to increasing the elastic coefficient of the second fixing portion 32, thereby being beneficial to reducing the force-induced deformation of the second fixing portion 32. It is also beneficial to avoiding non-centered deformation of the second fixing portion 32, thereby reducing astigmatism caused by non-uniform deformation of the reflecting surface 11 of the reflecting element 10. It is also beneficial to reducing the influence of stress on the corners of the reflecting element 10, thereby reducing the field curvature at the corners of the reflecting element 10, being beneficial to improving the reliability and stability of the reflecting module 1 and the imaging quality of the imaging module 2.

[0098]

Embodiment 9

[0099] As Figure 17 shown, the reinforcing member 30 has two arc-shaped partition regions 331, and each partition region 331 is correspondingly arranged with the third side and the fourth side respectively. A first fixing portion 31 is defined between the partition region 331 and the corresponding side, and a second fixing portion 32 is defined in the central region between the two partition regions 331. It should be understood that when the outer contour of the reflecting element 10 is circular, elliptical or D-Cut, etc., the arc-shaped partition region 331 enables the outer contour of the second fixing portion 32 to better fit the outer contour of the reflecting element 10, which is beneficial to the uniform distribution of stress. In addition, for the reflecting element 10 with a non-rotationally symmetric outer contour, the strain generated during the forming or cutting process will be greater than that of the reflecting element 10 with a rotationally symmetric outer contour. Taking the D-Cut-shaped reflecting element 10 as an example, due to the cutting process at the two straight edges, the stress at the two straight edges of the reflecting element 10 will be more concentrated, thereby causing the optical center to deviate towards the straight edges of the reflecting element 10. By providing the arc-shaped partition region 331, it is beneficial to compensate for the deviation of the optical center.

[0100] It is worth mentioning that, as Figure 18 shown, according to the actual application, the arc-shaped partition region 331 can also be correspondingly arranged with the first side and the second side. The present application does not make specific restrictions on this.

[0101]

Embodiment 10

[0102] As Figure 19 shown, the reinforcing member 30 has four arc-shaped partition regions 331. All the partition regions 331 are located on the same imaginary circle and are evenly distributed in the circumferential direction. Each partition region 331 is correspondingly arranged with one of the first side to the fourth side respectively, which is beneficial to making the stress transfer between the first fixing portion 31 and the second fixing portion 32 approach rotational symmetry, and is beneficial to avoiding the generation of non-uniform stress, which may cause non-uniform deformation of the reflecting surface 11 of the reflecting element 10 connected to the second fixing portion 32.

[0103] Especially under the condition that a lens is provided on the object side or the image side of the reflection element 10, the stress of the reflection surface 11 of the reflection element 10 is more rotationally symmetric relative to the optical axis, enabling the surface shape of the reflection surface 11 to be closer to the expected state, which is beneficial to making the optical performance of the reflection surface 11 more uniform, reducing the distortion of light during the reflection process, making it easier for the light near the optical axis and the light at the edge to maintain the original direction of propagation, reducing the separation phenomenon, and further avoiding defects such as coma, astigmatism, and distortion in the imaging of the camera module 2.

[0104] It should be understood that the number of the arc-shaped partition areas 331 can also be two, six, eight, etc., and the present application does not make specific limitations on this.

[0105]

Embodiment 11

[0106] As Figure 20 shown, the difference between Embodiment 11 and Embodiment 10 is that the two partition areas 331 corresponding to the first side and the second side are located on a hypothetical circle with a radius of R 1 and the two partition areas 331 corresponding to the third side and the fourth side are located on a hypothetical circle with a radius of R 2 , where R 1 <R 2 . It should be understood that when the mating surface 12 of the reflection element 10 is rectangular, in order to ensure the bonding strength between the reflection element 10 and the second fixing portion 32 of the reinforcing member 30, the area of the first bonding member 51 on the first fixing portion 31 located between the first side and the partition area 331 and between the second side and the partition area 331 is relatively large, so the stress generated by curing shrinkage is also relatively large, and the partition area 331 corresponding to the first side and the second side is needed to release the stress. Further, it is difficult to release the stress of the second fixing portion 32 by using the partition area 331 corresponding to the first side and the second side. By R 1 <R 2 , the second fixing portion 32 has a relatively large dimension in the direction parallel to the long side, which is beneficial to bearing the stress generated by the curing shrinkage of the second bonding member 52, thereby being beneficial to reducing the deformation of the second fixing portion 32 and the influence on the reflection element 10 connected to the second fixing portion 32, and improving the reliability and stability of the reflection module 1.

[0107]

Embodiment 12

[0108] As Figure 21As shown, the difference between Embodiment 12 and Embodiment 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 reflecting element 10 is rectangular, in order to ensure the bonding strength between the reflecting element 10 and the second fixing portion 32 of the reinforcing member 30, the area of the first bonding member 51 on the first fixing portion 31 near 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. By providing partition areas 331 with larger widths, it is beneficial to release stress, so as to reduce the influence on the second fixing portion 32 and the influence on the reflecting element 10 connected to the second fixing portion 32, which is beneficial to improving the reliability and stability of the reflection module 1.

[0109] In some embodiments, as Figure 22 and Figure 23 shown, the partition gap 33 includes a plurality of partition areas 331 arranged at intervals, and at least some of the partition areas 331 are distributed on the second fixing portion 32 at intervals, which is beneficial for the reinforcing member 30 to release stress, so as to reduce the deformation of the reinforcing member 30. Further, in the thickness direction of the reflecting element 10, the center of the projection area of the mating surface 12 on the reinforcing member 30 is defined as the central area, and the area of the central area is 20% - 30% of the total area of the projection area. The central area overlaps at least partially with the partition area 331, so as to reduce the strain in the middle area of the reflecting surface 11 of the reflecting element 10, make the surface shape of the reflecting surface 11, especially the surface shape of the middle area, closer to the expected state, reduce the distortion of light during the reflection process, and is beneficial to improving the imaging quality of the imaging module 2. The following provides several embodiments for further understanding the technology of the present application.

[0110]

Embodiment 13

[0111] As Figure 22 shown, each partition area 331 extends in the second direction, and each partition area 331 is arranged at intervals in the first direction. The dimension of the partition area 331 in the first direction is denoted as X 1 , the distance between two adjacent partition areas 331 is denoted as X 2 , and the distance from the partition area 331 closest to the short side of the reinforcing member 30 to the short side of the reinforcing member 30 is denoted as X 3 . X is the dimension of the mating surface 12 of the reflecting element 10 in the first direction, the first direction is parallel to the long side of the reinforcing member 30, and the second direction is parallel to the short side of the reinforcing member 30.

[0112] X 2 satisfies: 3X 1 ≤X 2 ≤6X 1 , or 0.5mm ≤ X2 ≤2 mm, or 0.05X ≤ X 2 ≤0.2X, so that there is sufficient 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 reinforcing member 30, and the reflective element 10. Further, through the partition area 331, the stress on each part of the reinforcing member 30 can be isolated, making the stress distribution more dispersed, which is beneficial to avoiding stress concentration, and thus reducing the influence of the stress of the reinforcing member 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 being beneficial to making the surface shape of the reflective surface 11, especially the surface shape of the middle area, closer to the expected state.

[0113] In a specific example, X 1 = 0.4 mm, X 2 = 1.3 mm. In a specific example, X 1 = 0.3 mm, X 2 = 1.8 mm. In a specific example, X 1 = 0.3 mm, X 2 = 1.2 mm.

[0114] X 3 satisfies: X 3 ≥ X 2 , so that the stiffness of the outer peripheral region of the reinforcing member 30 is greater than that of the middle region of the reinforcing member 30. It should be understood that the outer peripheral region of the reinforcing member 30 is defined as the first fixing portion 31 for bonding with the movable carrier 20, and the first fixing portion 31 has a greater stiffness, which is beneficial to resisting the stress generated by the curing shrinkage of the first bonding member 51, and reducing the deformation of the first fixing portion 31.

[0115] Further, at least part of the partition area 331 is located within the second fixing portion 32, so that the stress on the second fixing portion 32 is more dispersed, which is beneficial to avoiding stress concentration, making the reinforcing member 30 flatter, improving the flatness of the reinforcing member 30, and further reducing the influence of the deformation of the reinforcing member 30 on the reflective element 10, enabling the surface shape of the reflective surface 11 of the reflective element 10 to be closer to the expected state, and improving the reliability and stability of the reflective module 1.

[0116] Furthermore, part of the partition area 331 can also be located between the first fixing portion 31 and the second fixing portion 32, which can isolate the first fixing portion 31 and the second fixing portion 32, and is beneficial to avoiding the stress of the first fixing portion 31 from being transmitted to the second fixing portion 32.

[0117] It is worth mentioning that the arrangement of each partition area 331 is symmetric with respect to the median line of the reinforcing member 30 parallel to the first direction and symmetric with respect to the median line of the reinforcing member 30 parallel to the second direction. This is conducive to making the force on the reinforcing member 30 more balanced and reducing the risk of the light center of the reflecting element 10 shifting.

[0118]

Embodiment 14

[0119] As Figure 23 shown, each partition area 331 extends in the first direction, and the partition areas 331 are arranged at intervals in the second direction. The dimension of the partition area 331 in the first direction is denoted as Y 1 , the distance between two adjacent partition areas 331 is denoted as Y 2 , and the distance from the partition area 331 closest to the short side of the reinforcing member 30 to the short side of the reinforcing member 30 is denoted as Y 3 . Y is the dimension of the mating surface 12 in the second direction. The first direction is parallel to the long side of the reinforcing member 30, and the second direction is parallel to the short side of the reinforcing member 30.

[0120] Y 2 satisfies: 3Y 1 ≤Y 2 ≤6Y 1 , or 0.5 mm ≤ Y 2 ≤2 mm, or 0.06Y ≤ Y 2 ≤0.25Y, so that there is enough area between two adjacent partition areas 331 for bonding with the movable carrier 20 and the reflecting element 10, thereby enabling reliable bonding between the movable carrier 20, the reinforcing member 30, and the reflecting element 10. Further, the stress on each part of the reinforcing member 30 is isolated through the partition area 331, so that the stress distribution is more dispersed, which is conducive to avoiding stress concentration, and further reducing the influence of the stress of the reinforcing member 30 on the reflecting element 10 connected to the second fixing portion 32, reducing the deformation of the reflecting surface 11 of the reflecting element 10, and making the surface shape of the reflecting surface 11, especially the surface shape of the middle region, closer to the expected state.

[0121] In a specific example, Y 1 = 0.4 mm, Y 2 = 1.3 mm. In a specific example, Y 1 = 0.3 mm, Y 2 = 1.8 mm. In a specific example, Y 1 = 0.3 mm, Y 2 = 1.2 mm.

[0122] Y 3 satisfies: Y 3 ≥Y 2, so that the stiffness of the outer peripheral region of the reinforcing member 30 is greater than that of the middle region of the reinforcing member 30. It should be understood that the outer peripheral region of the reinforcing member 30 is defined as the first fixing portion 31 for bonding with the movable carrier 20. The first fixing portion 31 has a relatively large stiffness, which is beneficial to resisting the stress generated by the curing shrinkage of the first bonding member 51, and thus reducing the deformation of the first fixing portion 31.

[0123] Furthermore, at least part of the partition area 331 is located within the second fixing portion 32, so that the stress on the second fixing portion 32 is more dispersed, which is beneficial to avoiding stress concentration, making the reinforcing member 30 flatter, improving the flatness of the reinforcing member 30, and further reducing the influence of the deformation of the reinforcing member 30 on the reflecting element 10, so that the surface shape of the reflecting surface 11 of the reflecting element 10 is closer to the expected state, and improving the reliability and stability of the reflecting module 1.

[0124] Furthermore, part of the partition area 331 can also be located between the first fixing portion 31 and the second fixing portion 32, which can isolate the first fixing portion 31 and the second fixing portion 32, and is beneficial to preventing the stress of the first fixing portion 31 from being transmitted to the second fixing portion 32.

[0125] It is worth mentioning that the arrangement of each partition area 331 is symmetric with respect to the median line of the reinforcing member 30 parallel to the first direction and symmetric with respect to the median line of the reinforcing member 30 parallel to the second direction. Furthermore, it is beneficial to make the force on the reinforcing member 30 more balanced and reduce the risk of the light center of the reflecting element 10 shifting.

[0126]

Embodiment 15

[0127] As Figure 24 and Figure 25 shown, each of the partition areas 331 is circular, and at least part of the partition areas 331 are arranged 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 reinforcing member 30, make the stress distribution of the reinforcing member 30 more uniform, and further be beneficial to reducing the risk of the light center of the reflecting element 10 shifting. It is worth mentioning that the circular partition area 331 has a relatively small impact on the overall structural strength of the reinforcing member 30, which is beneficial to maintaining the structural integrity, and further reducing the impact of setting the partition area 331 on the local strength of the second fixing portion 32. In addition, the circular partition area 331 can more effectively release stress, and further be beneficial to reducing the influence of the deformation of the first fixing portion 31 on the reflecting element 10, so that the surface shape of the reflecting surface 11 of the reflecting element 10 is closer to the expected state, and improving the reliability and stability of the reflecting module 1.

[0128] In a specific example, as Figure 24As shown, a plurality of second bonding members 52 extend along a second direction and are spaced along a first direction between partition areas 331, so as to reliably bond the second fixing portion 32 and the reflecting element 10. It is worth mentioning that the arrangement of each second bonding member 52 is symmetric with respect to the median line of the reinforcing member 30 parallel to the first direction and with respect to the median line of the reinforcing member 30 parallel to the second direction, which is beneficial to making the force on the reflecting element 10 more balanced and reducing the risk of the light center of the reflecting element 10 shifting.

[0129] In another specific example, as Figure 25 shown, a part of the second bonding members 52 extend along the second direction and are spaced along the first direction between partition areas 331, and another part of the second bonding members 52 extend along the first direction and are arranged in an array between partition areas 331. It should be understood that the second bonding members 52 arranged in a crisscross manner are beneficial to increasing the bonding area between the second fixing portion 32 and the reflecting element 10, thereby improving the bonding reliability between the reinforcing member 30 and the reflecting element 10. In addition, the second bonding members 52 extending along the second direction and the second bonding members 52 extending along the first direction are spaced apart, which is beneficial to avoiding large accumulation of the curing stress of the second bonding members 52, further reducing the influence of the curing stress of the second bonding members 52 on the reflecting element 10, making the surface shape of the reflecting surface 11 of the reflecting element 10 closer to the expected state, and improving the reliability and stability of the reflecting module 1.

[0130] In some embodiments, as Figures 3 - 5 shown, the reinforcing member 30 further includes a supporting portion 34, and the supporting portion 34 can connect 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 skew and parallel to each other. In the thickness direction of the reinforcing member 30, the projection of the first fixing portion 31 does not overlap with the projection of the second fixing portion 32, 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 a first bonding member 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 a second bonding member 52, defining a second gap 42 between the second fixing portion 32 and the mating surface 12, and the second gap 42 is located outside the second bonding member 52.

[0131] It should be understood that through the supporting portion 34, it is beneficial to increase the distance between the second fixing portion 32 and the movable carrier 20. That is to say, the first gap 41 can be increased. In the case where the reinforcing member 30 and the movable carrier 20 are deformed due to temperature changes, it is possible to further prevent contact between the reinforcing member 30 and the movable carrier 20. Especially when the reflection module 1 or the camera module 2 drops, the movable carrier 20 and the reinforcing member 30 may undergo large deformations. By increasing the first gap 41, a buffer distance can be provided, which is beneficial to preventing impact collision between the movable carrier 20 and the reinforcing member 30, and thus better protecting the reflection element 10, the reinforcing member 30 and the movable carrier 20, and improving the reliability and impact resistance of the reflection module 1.

[0132] It is worth mentioning that the supporting portion 34 can release stress through deformation, which is beneficial to further reducing the influence of the curing shrinkage of the first adhesive 51 on the second fixing portion 32, and is beneficial to reducing the influence on the reflection element 10 connected to the second fixing portion 32, and further reducing the risk of deformation of the reflection 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 reinforcing member 30, and further reducing the deformation and stress of the movable carrier 20 and the reinforcing member 30.

[0133] In at least one embodiment, as Figure 4 shown, the first fixing portion 31 is arranged on the opposite side edges of the second fixing portion 32, and the supporting portion 34 is also located on the 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 the opposite sides of the second fixing portion 32 is beneficial to reducing the processing difficulty of the reinforcing member 30, reducing the production cost of the reinforcing member 30, and improving the production efficiency; it is also beneficial to reducing the overall size of the reflection module 1.

[0134] In another at least one embodiment, as Figure 5 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 arranging the supporting portion 34 and the first fixing portion 31 on the four sides of the second fixing portion 32 is beneficial 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.

[0135] In some embodiments, as Figure 1 and Figure 3As 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, defining a mounting surface 211 on the surface of the carrier mounting wall 21 facing the reflection element 10. The mounting surface 211 is adapted to be adhesively fixed to the first fixing portion 31. The first carrier side wall 22 and the second carrier side wall 23 are spaced apart along the third axis A3 on opposite sides of the carrier mounting wall 21. A receiving cavity 26 is formed among the first carrier side wall 22, the second carrier side wall 23, and the mounting surface 211. The receiving cavity 26 is used to accommodate the reflection element 10.

[0136] That is to say, both the reinforcing member 30 and the reflection element 10 are disposed in the receiving cavity 26. The reinforcing member 30 is located between the reflection element 10 and the carrier mounting wall 21. At least part of the first fixing portion 31 of the reinforcing member 30 is connected to the carrier mounting wall 21 through a first adhesive member 51, and at least part of the second fixing portion 32 is connected to the carrier mounting wall 21 through a second adhesive member 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 in positioning the reflection element 10 and protecting the reflection element 10.

[0137] In some embodiments, as Figure 1 and Figure 3 shown, the movable carrier 20 further includes a carrier back wall 25. The carrier back wall 25 is located between the first carrier side wall 22 and the second carrier side wall 23, connecting 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 reflection element 10. Further, the carrier back wall 25 is spaced apart from the carrier mounting wall 21 along the second optical axis OA2, which is beneficial to preventing the force on the carrier back wall 25 from being transmitted to the carrier mounting wall 21 and affecting the reflection element 10.

[0138] In some embodiments, the thickness of the reinforcing member 30 is denoted as H, the thickness of the carrier mounting wall 21 is denoted as L, and the thickness of the reflection element 10 is denoted as T, satisfying: L ≤ H ≤ T. It should be understood that under the condition that the movable carrier 20 meets the minimum wall thickness for injection molding, the smaller the wall thickness of the movable carrier 20, the smaller the stress and strain generated when heated. That is to say, by reducing the thickness L of the carrier mounting wall 21, it is beneficial to reduce the stress and strain generated by the carrier mounting wall 21 when heated, and thus reduce the influence on the reinforcing member 30 and the reflection element 10.

[0139] Further, the reinforcing member 30 is made of metal, and the thickness H of the reinforcing member 30 is greater than or equal to the thickness L of the carrier mounting wall 21, which is beneficial to compensating for the structural strength of the carrier mounting wall 21 and improving the impact resistance of the carrier mounting wall 21. Further still, since the reinforcing member 30 is made of metal and has a higher coefficient of thermal expansion than the reflective element 10, by making the thickness H of the reinforcing member 30 less than or equal to the thickness T of the reflective element 10, it is beneficial to reduce the influence of the deformation of the reinforcing member 30 caused by temperature on the reflective element 10, and further beneficial to reducing the deformation of the reflective surface 11 of the reflective element 10, thereby improving the stability and reliability of the reflective module 1.

[0140] In some embodiments, the area of the first fixing portion 31 is denoted as N 1 , and the area of the second fixing portion 32 is denoted as N 2 , satisfying: N 1 ≥0.5N 2 . It should be understood that by making N 1 ≥0.5N 2 , it is beneficial to ensure that the first fixing portion 31 has a large area for bonding with the movable carrier 20, thereby improving the connection strength and reliability between the reinforcing member 30 and the movable carrier 20. In addition, it is also beneficial to improve the isolation effect of the partition gap 33, reduce the stress transmitted from the first fixing portion 31 to the second fixing portion 32, and further beneficial to reducing or even avoiding the deformation of the reflective surface 11 of the reflective element 10, thereby improving the reliability and stability of the reflective module 1.

[0141] In some embodiments, the area of the mating surface 12 of the reflective element 10 is denoted as M, and the area of the mating surface 12 bonded to the second fixing portion 32 is denoted as M 1 , satisfying: 0.3M ≤ M 1 ≤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 bonding member 52. By making 0.3M ≤ M 1 ≤0.7M, it is beneficial to reduce the amount of adhesive used, and thereby reduce the production cost of the reflective module 1. And, on the basis of ensuring the reliable fixed connection between the reflective element 10 and the reinforcing member 30, it is also beneficial to reduce the stress transmission between the reinforcing member 30, the second bonding member 52 and the reflective element 10. In addition, it is also possible to increase the area of the second gap 42 outside the second bonding member 52, and further reduce the risk of the reinforcing member 30 and the reflective element 10 touching each other after thermal deformation.

[0142] In other embodiments, the reflective element 10 can also be connected to the second fixing portion 32 of the reinforcing member 30 by welding, which is beneficial to shortening the heating time of the reflective element 10 and the reinforcing member 30 and reducing the stress and strain of the reflective element 10 and the reinforcing member 30.

[0143] In some embodiments, the coefficient of thermal expansion of the reflective element 10 is denoted as C 1 , and the coefficient of thermal expansion of the reinforcing member 30 is denoted as C 2 , satisfying: 0.25C 2 ≤C 1 ≤0.75C 2 . It should be understood that by making 0.25C 2 ≤C 1 ≤0.75C 2 , the forces on the upper and lower surfaces of the second bonding member 52 are made more balanced, which is beneficial to avoiding the risk of delamination or surface cracking of the second bonding member 52.

[0144] Specifically, if the coefficient of thermal expansion C of the reflective element 10 1 and the coefficient of thermal expansion C of the reinforcing member 30 2 differ too much, during the process of thermally curing the adhesive to form the second bonding member 52, it may cause the stress on one surface of the second bonding member 52 to be much greater than the stress on the other surface, thereby resulting in stress concentration, leading to delamination or surface cracking of the second bonding member 52. In this embodiment, satisfying 0.25C 2 ≤C 1 ≤0.75C 2 is beneficial to making the force on the second bonding member 52 more balanced, reducing or even avoiding stress concentration, and is beneficial to improving the bonding strength and bonding reliability between the reinforcing member 30 and the reflective element 10. That is to say, although the area of the second bonding member 52 is small because 0.3M≤M 1 ≤0.7M needs to be satisfied, by satisfying 0.25C 2 ≤C 1 ≤0.75C 2 , the reliable fixed connection between the reinforcing member 30 and the reflective element 10 can still be achieved.

[0145] In some embodiments, as Figure 6 shown, the reinforcing member 30 further includes a fitting portion 35. The fitting portion 35 extends by bending from the first fixing portion 31 towards the movable carrier 20 and is embedded in the movable carrier 20. At least a part 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 fitted together, defining a first gap 41 between the reinforcing member 30 and the movable carrier 20; the second fixing portion 32 is bonded to the mating surface 12 through the second bonding member 52, defining a second gap 42 between the reinforcing member 30 and the mating surface 12, and the second gap 42 is located on the outer periphery of the second bonding member 52.

[0146] Specifically, the reinforcement member 30 is formed on the movable carrier 20 by insert injection molding, which is conducive to avoiding the setting of an adhesive between the first fixing portion 31 of the reinforcement member 30 and the movable carrier 20, and thus conducive to avoiding the shrinkage stress during the thermal curing of the adhesive to form the first bonding member 51. That is to say, replacing the bonding with insert injection molding is conducive to reducing the stress between the first fixing portion 31 and the movable carrier 20, and thus conducive to reducing the influence on the second fixing portion 32 and the reflecting element 10 connected to the second fixing portion 32.

[0147] In some embodiments, as Figure 1 and Figure 3 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. The carrier back wall 25 connects the first carrier side wall 22 and the second carrier side wall 23. The reinforcement member 30 is inclined and arranged 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 spaced 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 spaced from the carrier back wall 25 along the second optical axis OA2 direction. That is to say, the reinforcement member 30 is suspended. Further, the fitting 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 between the reinforcement member 30 and the movable carrier 20.

[0148] In at least one embodiment, as Figure 6 shown, the fitting portion 35 includes a first fitting portion 351. Under the condition that the reinforcement member 30 is fitted to the movable carrier 20, the first fitting portion 351 bends and extends along the first optical axis OA1 direction to be embedded in the carrier back wall 25. In at least one embodiment, as Figure 6 shown, the fitting portion 35 includes a second fitting portion 352. Under the condition that the reinforcement member 30 is fitted to the movable carrier 20, the second fitting portion 352 bends and extends along the second optical axis OA2 direction to be embedded in the carrier bottom wall 24. In at least one embodiment, as Figure 6 shown, the fitting portion 35 includes a third fitting portion 353. Under the condition that the reinforcement member 30 is fitted to the movable carrier 20, the third fitting portion 353 extends along the third axis A3 direction to be embedded in the first carrier side wall 22 and the second carrier side wall.

[0149] In some embodiments, as Figure 1 and Figure 3As shown, the reflection module 1 further includes a bracket 60, a first lens 71, and a second lens 72. The bracket 60 is fixed to the movable carrier 20 to be adapted to move synchronously with the movable carrier 20. The first lens 71 is carried by the bracket 60 and is disposed opposite to the reflection element 10 along the first optical axis OA1. The second lens 72 is carried by the bracket 60 and is disposed opposite to the reflection element 10 along the second optical axis OA2.

[0150] In some embodiments, the first lens 71 of the reflection module 1 has at least one convex surface, so that the first lens 71 has a positive optical power for converging light rays; the second lens 72 has at least one concave surface, so that the second lens 72 has a negative optical power for diverging light rays. It is worth mentioning that the first lens 71 defines the first optical axis OA1, the second lens 72 defines the 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.

[0151] That is to say, the first lens 71 has a positive optical power to converge light rays, so that the light rays along the first optical axis OA1 are converged after passing through the first lens 71, which can increase the amount of incident light without changing the physical aperture of the imaging module 2. That is to say, it is equivalent to increasing the effective aperture of the imaging module 2, and thus the imaging quality of the imaging module 2 in low-light environments can be improved.

[0152] Furthermore, the light rays converged by the first lens 71 remain converged after being reflected by the reflection element 10. Therefore, 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. Furthermore, the shoulder height of the imaging module 2 can be reduced, which is beneficial to meeting the development trend of the thinning of electronic devices.

[0153] As described above, the second lens 72 has a negative optical power to diverge light rays, so that the light rays along the second optical axis OA2 are diverged after passing through the second lens 72, increasing the coverage area of the light rays reaching the lens module 81. When the reflection element 10 performs optical image stabilization operations, it moves. Since the light ray coverage area increases, the influence of the movement stroke of the reflection element 10 on the position of the light rays on the lens module 81 is relatively small, which is beneficial to improving image stability and making the picture more stable during shooting.

[0154] It should be understood that since the first lens 71 has a converging effect and the second lens 72 has a beam expanding effect, the surface shape of the reflecting surface 11 of the reflecting element 10 is particularly important. If there are large protrusions or depressions on the reflecting surface 11, the light converged by the first lens 71 cannot accurately converge to the predetermined focal position on the second lens 72 after being reflected by the reflecting element 10, resulting in aberration. Further, the beam expanding effect of the second lens 72 may further magnify the aberration, resulting in blurred final imaging and loss of details of the imaging module 2. Large protrusions or depressions on the reflecting surface 11 will also cause light scattering to form stray light, or the light enters the imaging system after multiple reflections, resulting in an increase in the final imaging noise of the imaging module 2, and even forming ghosts or other abnormal light spots, affecting the readability and aesthetics of the image. In addition, if the stress distribution on the reflecting surface 11 is uneven, resulting in uneven protrusions or depressions on the reflecting surface 11, light at different positions will be offset to different degrees, causing the image field to bend and resulting in inconsistent imaging quality between the central and edge parts of the image.

[0155] In this embodiment, as described above, the first fixing portion 31 of the reinforcing 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 reflecting element 10, and the partition gap 33 is located between the first fixing portion 31 and the second fixing portion 32, or is provided on the second fixing portion 32, so as to isolate the first fixing portion 31 from the reflecting element 10. Further, 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, stress can be absorbed through the first fixing portion 31 and the second fixing portion 32, and the partition gap 33 is beneficial to further prevent stress from being transmitted to the reflecting element 10, thereby reducing the influence of the force generated by the deformation of the movable carrier 20 on the reflecting element 10, and being beneficial to improving the reliability and stability of the reflecting module 1.

[0156] That is to say, by providing the reinforcing member 30, it is beneficial to improve the flatness of the reflecting surface 11, or to 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 coincidence with the expected path, which is beneficial to keeping the light propagating along the path after being converged by the first lens 71, and reducing 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 imaging module 2.

[0157] 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 reflection element 10 can be kept fixed. Furthermore, when the first lens 71, the reflection element 10 and the second lens 72 are driven to rotate together, during the process that light passes through the first lens 71 and is incident on the reflection element 10, and then is reflected by the reflection element 10 to the second lens 72, a relatively stable propagation path and propagation angle can be maintained, which not only improves the clarity of imaging, but also enhances the overall quality of the image. In addition, keeping the relative position and relative angle between the first lens 71, the reflection element 10 and the second lens 72 fixed is also beneficial to avoiding setting additional structures or algorithms to optimize the propagation path and angle of light, which is conducive to reducing the design and manufacturing difficulties of the reflection module 1 and the camera module 2, and is also conducive to simplifying the driving structure and improving the reliability and stability of the reflection module 1.

[0158] Furthermore, the first lens 71 and the second lens 72 are carried by 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 mounted on the bracket 60, which is beneficial 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 reflection element 10 and the second lens 72 can be made smaller, which is beneficial to making the structure of the reflection module 1 more compact.

[0159] A camera module 2, as Figure 26 shown, includes: the above-mentioned reflection module 1, a lens module 81, an imaging module 82, a base 91 and a housing 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 disposed in the receiving cavity 911. The housing 92 covers the base 91 to protect the reflection module 1 and the lens module 81 in the receiving cavity 911.

[0160] In some embodiments, the lens module 81 includes a plurality of lenses, and the lens module 81 is used to image light on the 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 arranged in sequence along the optical axis direction.

[0161] 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 to say, the first lens group 811 is fixed to the base 91, and the second lens group 812 is carried by the lens moving carrier. The lens moving carrier carrying the second lens group 812 is driven to move along the second direction by the focusing drive assembly. Furthermore, the optical focusing function of the imaging module 2 is achieved by adjusting the relative positions of the first lens group 811 and the second lens group 812. In addition, the relative position between 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 imaging module 2.

[0162] It should be understood that the lens module 81 may further include a third lens group and / or a fourth lens group. The third lens group and / or the fourth lens group can move along the second direction to achieve the optical zoom function, and the present application does not make specific limitations thereon.

[0163] 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. 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 driving chips, storage chips, etc.

[0164] Furthermore, the imaging module 82 further includes a filter assembly. The filter assembly includes a filter element. The filter element is held on the light-sensitive 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 the unwanted stray light such as infrared light in the incident light.

[0165] Even further, the filter assembly further includes a filter element mounting frame. The filter element is mounted and fixed to the filter element mounting frame and corresponds to at least the light-sensitive area of the photosensitive chip. Specifically, the filter element mounting frame has a light-passing hole. The incident light passing through the lens module 81 enters the photosensitive chip through the light-passing hole. The filter element can be directly attached or inversely attached to the filter element mounting frame.

[0166] 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 the present application does not make specific limitations thereon.

[0167] The basic principles, main features and advantages of the present invention have been described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended 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 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