CN111885293A

CN111885293A - Electronic equipment, optical acquisition module and reflection module

Info

Publication number: CN111885293A
Application number: CN202011038623.XA
Authority: CN
Inventors: 徐同明; 储著明; 李刚; 陈凯
Original assignee: Changzhou Ruitai Photoelectric Co Ltd
Current assignee: Changzhou Ruitai Photoelectric Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-11-03
Anticipated expiration: 2040-09-28
Also published as: WO2022062136A1; CN111885293B

Abstract

The invention relates to electronic equipment, an optical acquisition module and a reflection module. The reflection module comprises a base with an installation space, a support, a prism and an elastic connection, wherein the support is accommodated in the installation space, the prism and the elastic connection are fixed on the support, the support is reset by elasticity of the base and drives the support to be relative to a driving assembly of the base, the elastic reset piece is provided with a first axis and a second axis which are perpendicular to each other, and the driving assembly drives the support to rotate around the first axis and the second axis respectively. In the working process, the elastic resetting piece can guide the support fixed with the prism to rotate around the first axis and the second axis to realize the optical anti-shake function, and the support can be reset to a static state through the elastic force of the elastic resetting piece. The reflection module, the optical acquisition module comprising the reflection module and the electronic equipment are relatively simple in overall structure.

Description

Electronic equipment, optical acquisition module and reflection module

Technical Field

The invention relates to the technical field of optical imaging, in particular to electronic equipment, an optical acquisition module and a reflection module.

Background

With the development of Optical imaging technology, more and more electronic devices have Optical acquisition modules (such as a camera of a mobile phone, a camera of a camera, etc.), and the Optical acquisition modules of the Optical acquisition modules relate to an Optical Image Stabilization (OIS) technology. The OIS technique functions to adjust the camera field of view to facilitate compensation for user hand-trembling and is primarily achieved by "lens shift".

Conventionally, when the optical anti-shake function is realized through the reflection module, the optical collection module needs to adjust the angle of the incident light through the rotation of the prism in the reflection module. When in order to make the prism move stably, the overall structure of the traditional reflection module not only needs to be provided with a guide mechanism for guiding the prism to move, but also needs to be additionally provided with a reset mechanism for driving the prism to move and then adjusting the prism to reset to a static state, the structure of the optical acquisition module is relatively complex due to the guide mechanism and the reset mechanism, and the manufacturing cost and the occupied space of the device are increased.

Disclosure of Invention

Accordingly, there is a need to overcome the drawbacks of the prior art and to provide an electronic device, an optical pickup module and a reflection module, which can realize the movement of a prism with respect to a base while having a relatively simple overall structure.

The technical scheme is as follows: the utility model provides a reflective module, reflective module including have installation space the base, accept in installation space's support, be fixed in prism, the elastic connection of support the support with the elasticity of base resets and drives the support is relative the drive assembly of base motion, the elasticity resets and has the first axis and the second axis that mutually perpendicular set up, the drive assembly drive the support winds respectively first axis and the second axis rotates.

Preferably, drive assembly includes first drive assembly and second drive assembly, first drive assembly include along being on a parallel with first axial direction set up relatively in on the support with first coil and first magnet steel on the base, second drive assembly include along being on a parallel with second axial direction set up relatively in the support with second coil and second magnet steel on the base.

Preferably, the elastic reset piece comprises a first plate fixedly connected with the bracket, a second plate fixedly connected with the base, and a connecting piece connected with the first plate and the second plate, wherein the first plate rotates around the first axis and the second axis relative to the second plate respectively.

Preferably, the elastic restoring member further has a third axis perpendicular to the first axis and the second axis, and the elastic restoring member is symmetrically disposed about the third axis.

Preferably, the connecting pieces are two and are respectively connected with one end of the first plate and one end of the second plate, which are positioned on the same side of the third axis, one of the connecting pieces comprises a first connecting part connected with the first plate, a second connecting part connected with the second plate and an elastic part protruding towards the third axis and connected with the first connecting part and the second connecting part, and the first connecting part and the second connecting part are arranged at intervals relatively.

Preferably, the young's modulus of the material of the connector is greater than 350MPa and less than 750 MPa.

According to the reflection module, the elastic reset piece can guide the support fixed with the prism to rotate around the first axis and the second axis relative to the base, so that an optical anti-shake function is achieved, and meanwhile, the elastic reset piece is elastically connected with the support and the base, so that the support can be driven by the elastic force of the elastic reset piece to achieve a reset function.

The invention also provides an optical acquisition module, which comprises the reflection module.

The invention also provides electronic equipment comprising the optical acquisition module.

The electronic device comprises the optical acquisition module, and the technical effect of the optical acquisition module is brought by the reflection module, so that the beneficial effects are the same as those of reflection, and the description is omitted herein.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded schematic view of an optical pickup module according to an embodiment of the present invention;

fig. 2 is a schematic view of an optical pickup module according to an embodiment of the present invention;

FIG. 3 is a schematic view of another optical pickup module according to an embodiment of the present invention;

FIG. 4 is a schematic top view of an optical pickup module according to an embodiment of the present invention;

FIG. 5 is a view of FIG. 4 taken at A-A from a perspective thereof;

FIG. 6 is a view from a perspective of the cross-section of FIG. 4 taken at B-B;

fig. 7 is a schematic structural diagram of the optical acquisition module according to an embodiment of the present invention, in which the flexible printed circuit board and the base are hidden;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a side view of FIG. 7;

fig. 10 is a schematic structural diagram of an elastic reset element of an optical pickup module according to an embodiment of the present invention;

FIG. 11 is a view structure diagram of a bracket of an optical pickup module according to an embodiment of the present invention;

FIG. 12 is a schematic view of another embodiment of a bracket of an optical pick-up module according to the present invention;

FIG. 13 is a view structure diagram of a base of an optical pickup module according to an embodiment of the present invention;

fig. 14 is a structural view of another perspective of the base of the optical pickup module according to an embodiment of the invention.

10. A base; 11. a first bottom panel; 111. a second opening; 12. a first back panel; 121. a window; 122. a cover plate; 13. a first side panel; 131. a first opening; 20. a support; 21. a first mounting plate; 211. a first mounting groove; 22. a second mounting plate; 221. a second mounting groove; 30. an elastic reset member; 31. a first plate; 32. a second plate; 33. a connecting member; 331. a first connection portion; 332. a second connecting portion; 333. an elastic part; 40. a prism; 51. a first magnetic steel plate; 52. a first coil; 53. a second magnetic steel plate; 54. a second coil; 60. a flexible circuit board; 61. a first circuit board; 62. a second circuit board; 63. and a third circuit board.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 3, fig. 1 illustrates an exploded structure diagram of an optical acquisition module according to an embodiment of the present invention, fig. 2 illustrates a view angle structure diagram of the optical acquisition module according to an embodiment of the present invention, and fig. 3 illustrates another view angle structure diagram of the optical acquisition module according to an embodiment of the present invention. In an embodiment of the invention, the reflective module includes a base 10 having an installation space, a bracket 20 accommodated in the installation space, a prism 40 fixed to the bracket 20, an elastic reset member 30 elastically connecting the bracket 20 and the base 10, and a driving assembly driving the bracket 20 to move relative to the base 10. The elastic reset element 30 has a first axis N (the first axis N is shown in fig. 9 or 10), a second axis M (the second axis M is shown in fig. 8 or 10), and a third axis O (the third axis O is shown in fig. 10) disposed perpendicular to each other, and the driving assembly drives the bracket 20 to rotate around the first axis N and the second axis M, respectively, so as to achieve the optical anti-shake function.

In the reflective module, during the operation, if the driving assembly drives the bracket 20 to rotate around the first axis N to achieve the optical anti-shake function, and meanwhile, the elastic reset member 30 is compressed when the bracket 20 rotates, so that the elastic reset member 30 can achieve the reset of the bracket 20 when the reflective module finishes the operation; similarly, if the driving assembly drives the support frame 20 to rotate around the second axis M, the support frame 20 will also compress the elastic restoring member 30 during the rotation, so that the elastic restoring member 30 can also restore the support frame 20. It can be seen that, the support 20 drives the prism 40 to move synchronously when rotating around the first axis N and the second axis M of the elastic reset piece 30 respectively, so that the angle of incident light is adjusted to realize the function of optical anti-shake, and meanwhile, the elastic reset piece 30 can realize the reset action of the support 20 after rotating along two axial directions, so that the whole structure is relatively simple, the occupied space is small, and the manufacturing cost is low.

In an embodiment, please refer to fig. 1, 4 to 6, fig. 4 illustrates a schematic top view of an optical pickup module according to an embodiment of the present invention, fig. 5 illustrates a view of the optical pickup module in a cut-away position of fig. 4 at a-a, and fig. 6 illustrates a view of the optical pickup module in a cut-away position of fig. 4 at B-B. The base 10 includes a first bottom panel 11, a first back panel 12, and two first side panels 13 disposed opposite to each other. The first bottom panel 11, the first back panel 12, and the two first side panels 13 enclose an installation space. The bracket 20 is movably disposed in the installation space, the bracket 20 is used for installing the prism 40, two opposite sides of the bracket 20 are disposed in one-to-one correspondence with the two first side panels 13 and are both provided with a first movable interval, and the back of the bracket 20 and the first back panel 12 are provided with a second movable interval. The elastic restoring member 30 is disposed in the second movable interval. The back of the bracket 20 is connected to the first back panel 12 by a resilient return member 30 and a drive assembly is provided for driving the movement of the bracket 20.

The side surface of the rack 20 refers to a surface of the rack 20 facing the first side plate 13, and the back surface of the rack 20 refers to a surface of the rack 20 facing the first back plate 12.

The installation space defined by the first bottom panel 11, the first back panel 12, and the two first side panels 13 is not a closed installation space. Further, the first bottom panel 11 is connected to the first back panel 12 and the two first side panels 13, respectively, and/or the first back panel 12 is connected to the first bottom panel 11 and the two first side panels 13, respectively.

In this way, during operation, if the driving assembly drives the bracket 20 to rotate on the panel surface of the first bottom panel 11, the elastic restoring member 30 is compressed when the bracket 20 rotates on the panel surface of the first bottom panel 11, so that the elastic restoring member 30 can restore the bracket 20; if the driving assembly drives the bracket 20 to rotate by using the axis parallel to both the back surface of the bracket 20 and the plate surface of the first bottom plate 11 as the central axis of the rotating shaft, the bracket 20 will also compress the elastic restoring member 30 during the rotation, so that the elastic restoring member 30 can also realize the restoration of the bracket 20. Therefore, when the support 20 moves, the prism 40 is synchronously driven to move, so that the prism 40 can move relative to the base 10, meanwhile, the elastic resetting piece 30 arranged in the second movable interval can realize the resetting action of the support 20, and the overall structure is relatively simple.

Referring to fig. 1, 7 to 9, fig. 7 is a schematic structural diagram of an optical acquisition module according to an embodiment of the present invention, in which a flexible printed circuit and a base 10 are hidden, fig. 8 is a top view of fig. 7, and fig. 9 is a side view of fig. 7. In one embodiment, the drive assembly includes a first drive assembly and a second drive assembly. The first driving assembly includes a first coil 52 and a first magnetic steel, which are oppositely disposed on the bracket 20 and the base 10 along a direction parallel to the first axis N. The second driving assembly includes a second coil 54 and a second magnetic steel, which are oppositely disposed on the bracket 20 and the base 10 along a direction parallel to the second axis M.

In a particular embodiment, the drive assembly includes a first drive assembly. The first driving assembly includes two first magnetic steel plates 51 and two first coils 52. The two first coils 52 are arranged opposite to the first magnetic steel plates 51 one by one, and the two first magnetic steel plates 51 are arranged on two opposite side surfaces of the bracket 20 one by one. The two first coils 52 are disposed in one-to-one correspondence with the two first side panels 13, and the first coils 52 are fixed to the first side panels 13. In this way, when the first driving assembly is operated, the two first coils 52 are both energized, one first coil 52 acts on the first magnetic steel plate 51 opposite to the other first coil, and the first magnetic steel plate 51 moves under the action of magnetic force to realize the rotation of the bracket 20 on the first bottom panel 11 around the first axis N (the first axis N is shown in fig. 9 or fig. 10).

Furthermore, further, the drive assembly further comprises a second drive assembly. The second driving assembly includes two second magnetic steel plates 53 and two second coils 54. The two second coils 54 are arranged opposite to the second magnetic steel plates 53 one by one, the two second magnetic steel plates 53 are arranged on the back of the bracket 20 at intervals, and the second coils 54 are fixed relative to the base 10. In this way, when the second driving assembly is in operation, the two second coils 54 are both energized, one second coil 54 acts on the second magnetic steel plate 53 which is opposite to the other second coil, and the second magnetic steel plate 53 moves under the action of magnetic force to realize the rotation of the bracket 20 around the second axis M (the second axis M is shown in fig. 8 or fig. 10).

As shown in fig. 10, in one embodiment, the elastic restoring member 30 is symmetrical about the second axis M and the third axis O. Thus, the operation effect is stable when the driving assembly drives the bracket 20 to rotate around the first axis N; similarly, the driving assembly drives the bracket 20 to rotate around the second axis M with a stable operation effect.

In this embodiment, the first axis N is perpendicular to the horizontal plane, and the elastic restoring member 30 rotates around the first axis N in the horizontal plane; the second axis M is parallel to the horizontal plane, and the elastic restoring member 30 performs a turning motion around the second axis M.

Referring to fig. 11 and 12, fig. 11 illustrates a view structural diagram of a bracket 20 of an optical pickup module according to an embodiment of the invention, and fig. 12 illustrates another view structural diagram of the bracket 20 of the optical pickup module according to an embodiment of the invention. In one embodiment, the side of the bracket 20 is provided with a first mounting plate 21. The first mounting plate 21 is provided with a first mounting groove 211 corresponding to the first magnetic steel plate 51, and the first magnetic steel plate 51 is mounted in the first mounting groove 211.

It should be noted that the "first mounting plate 21" may be a "part of the bracket 20", that is, the "first mounting plate 21" and "the other part of the bracket 20" are integrally formed; or it may be a separate member that is separable from the rest of the bracket 20, i.e., the first mounting plate 21 may be manufactured separately and then integrated with the rest of the bracket 20. As shown in fig. 11 or 12, in one embodiment, the "first mounting plate 21" is a part of the "bracket 20" that is integrally formed.

Referring to fig. 1, 11 and 12, in one embodiment, two second mounting plates 22 are disposed on the back of the bracket 20 at intervals. The second mounting plate 22 is provided with a second mounting groove 221 adapted to the second magnetic steel plate 53, and the second magnetic steel plate 53 is mounted in the second mounting groove 221. Furthermore, the elastic return element 30 is located in the space between the two second mounting plates 22. So set up, effectively reduced reflection module's occupation space.

The first coil 52 is fixed to the first side panel 13, and the first coil 52 may be directly fixed to the first side panel 13 or indirectly fixed to the first side panel 13.

Referring to fig. 13 and 14, fig. 13 is a view structural diagram of a base 10 of an optical pickup module according to an embodiment of the invention, and fig. 14 is a view structural diagram of the base 10 of the optical pickup module according to another embodiment of the invention. Further, a window 121 is provided on the first back panel 12. An openable cover plate 122 is disposed at the window 121, and the cover plate 122 is opened to facilitate the installation of the elastic restoring member 30 in the second movable interval.

Referring to fig. 1 and 10, fig. 10 is a schematic structural diagram illustrating an elastic reset element 30 of an optical acquisition module according to an embodiment of the present invention. In one embodiment, the elastic restoring member 30 includes a first plate 31 fixedly coupled to the bracket 20, a second plate 32 fixedly coupled to the base 10, and a coupling member 33 coupling the first plate 31 and the second plate 32. The first plate 31 of the fixed link bracket 20 rotates about the first axis N and the second axis M with respect to the second plate 32 of the fixed link base 10, respectively.

As shown in fig. 10, the two connecting members 33 are symmetrically disposed about the third axis O, the two connecting members 33 are respectively connected to one ends of the first plate 31 and the second plate 32 on the same side of the third axis O, one of the connecting members 33 includes a first connecting portion 331 connected to the first plate 31, a second connecting portion 332 connected to the second plate 32, and an elastic portion 333 protruding toward the third axis O and connecting the first connecting portion 331 and the second connecting portion 332, the first connecting portion 331 and the second connecting portion 332 are disposed at an interval, which is more beneficial for the elastic restoring member 30 to elastically deform when being stressed, so as to provide an acting force for restoring the reflective module, and when the first plate 31 rotates about the first axis N and the second axis M relative to the second plate 32, respectively, the elastic portion 333 elastically deforms correspondingly, so as to provide an acting force for restoring the reflective module.

Specifically, the first plate 31 is bonded, riveted, welded or otherwise secured to the back of the bracket 20 using mounting members (e.g., screws, bolts, pins, etc.), and the second plate 32 is attached to the first back surface plate 12 of the base 10 in a similar manner, which will not be described in detail.

Further, the young's modulus of the material of the connection member 33 is greater than 350MPa and less than 750 MPa. So set up, on the one hand, under first drive assembly's exogenic action, elasticity resets and can be convenient for rotate around first axis N by piece 30, and on the other hand, under second drive assembly's exogenic action, is favorable to elasticity to reset and rotates around second axis M by piece 30.

In other alternative embodiments, the elastic restoring member 30 may be provided in other shapes, for example, the projection of the elastic restoring member 30 on the first bottom panel 11 is "i" shaped or "wang" shaped. So, the both sides that elasticity reset piece 30 is hollow out construction, and the lateral part is easy to be compression deformation during the atress to can realize that support 20 easily rotates the adjustment position on the face of first bottom surface board 11, and support 20 rotates the in-process compression elasticity and resets piece 30 and can realize that support 20 resets.

As an example, the projection of the elastic restoring member 30 on the first bottom panel 11 is in the shape of an "i" character outline or an "wang" character outline.

The elastic restoring member 30 may be an elastic member made of plastic, a metal, or a silicone, and is not limited herein.

It should be noted that the first plate 31, the second plate 32, and the connecting member 33 are manufactured independently and then connected to each other, but may be integrally manufactured by injection molding, and are not limited thereto.

Referring to fig. 1 again, in one embodiment, the reflective module further includes a flexible circuit board 60. The flexible circuit board 60 is disposed on the base 10, and the flexible circuit board 60 is electrically connected to the first coil 52 and the second coil 54, respectively.

Further, the flexible circuit board 60 includes a first circuit board 61, two second circuit boards 62 disposed opposite to each other, and two third circuit boards 63 disposed opposite to each other. The first circuit board 61 is electrically connected to the second circuit board 62 and the third circuit board 63, respectively. The first circuit board 61 is stacked on the first back panel 12, the two second circuit boards 62 are correspondingly stacked on the two first side panels 13, and the two third circuit boards 63 are respectively located on the top surface and the bottom surface of the base 10. The two first coils 52 are electrically connected to the two second circuit boards 62 one by one, and the two second coils 54 are electrically connected to the two third circuit boards 63 one by one.

Specifically, the two second circuit boards 62 are located outside the base 10, the first side panel 13 is provided with a first opening 131 corresponding to the first coil 52, and the first coil 52 is disposed in the first opening 131. In addition, the first bottom panel 11 is provided with a second opening 111. One of the third circuit boards 63 is located on the bottom side of the first bottom panel 11, and one of the second coils 54 is located in the second opening 111 and electrically connected to the third circuit board 63.

In one embodiment, an optical collection module includes the reflection module of any of the above embodiments, and further includes a prism 40, wherein the prism 40 is mounted on the bracket 20.

In the working process of the optical acquisition module, if the driving assembly drives the bracket 20 to rotate around the first axis N, the elastic resetting piece 30 is compressed when the bracket 20 rotates, so that the elastic resetting piece 30 can reset the bracket 20; if the driving assembly drives the support frame 20 to rotate around the second axis M, the support frame 20 will also compress the elastic restoring member 30 when rotating, so that the elastic restoring member 30 can also restore the support frame 20. Therefore, when the support 20 moves, the prism 40 is synchronously driven to move, so that the prism 40 can move relative to the base 10, meanwhile, the elastic resetting piece 30 can realize the resetting action of the support 20, and the overall structure is relatively simple.

In one embodiment, an electronic device includes the optical pickup module of any one of the above embodiments.

The electronic equipment comprises the optical acquisition module, and the technical effect of the electronic equipment is brought by the optical acquisition module, so that the beneficial effect of the electronic equipment is the same as that of the optical acquisition module, and the details are not repeated herein.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. The utility model provides a reflection module, its characterized in that, reflection module including have installation space the base, accept in installation space's support, be fixed in prism, the elastic connection of support with the elasticity of base resets and drives the support is relative the drive assembly of base motion, the elasticity resets first axis and the second axis that has mutually perpendicular setting, the drive assembly drive the support winds respectively first axis and the second axis rotates.

2. The reflection module according to claim 1, wherein the driving assembly comprises a first driving assembly and a second driving assembly, the first driving assembly comprises a first coil and a first magnetic steel which are oppositely disposed on the bracket and the base along a direction parallel to a first axis, and the second driving assembly comprises a second coil and a second magnetic steel which are oppositely disposed on the bracket and the base along a direction parallel to a second axis.

3. The reflective module of claim 1, wherein the resilient return element comprises a first plate fixedly coupled to the bracket, a second plate fixedly coupled to the base, and a connector coupling the first plate and the second plate, wherein the first plate rotates about the first axis and the second axis relative to the second plate, respectively.

4. The reflective module of claim 3, wherein said resilient return member further has a third axis, said third axis being perpendicular to said first axis and said second axis, said resilient return member being symmetrically disposed about said third axis.

5. The reflection module according to claim 4, wherein the two connection members are respectively connected to the ends of the first board and the second board on the same side of the third axis, one of the connection members includes a first connection portion connected to the first board, a second connection portion connected to the second board, and an elastic portion protruding toward the third axis and connecting the first connection portion and the second connection portion, and the first connection portion and the second connection portion are spaced apart from each other.

6. A reflective module according to any of claims 3-5, characterized in that the Young's modulus of the material of said connection member is larger than 350MPa and smaller than 750 MPa.

7. An optical collection module comprising a reflective module according to any of claims 1 to 6.

8. An electronic device comprising the optical collection module of claim 7.