Reflection module

Abstract

The utility model relates to the technical field of optical equipment, and discloses a reflection module, which comprises a fixing piece, a reflection piece, a magnet group, a coil group and an optical module, the reflecting piece is movably connected to the fixing piece, and the reflecting piece is provided with a reflecting surface; the magnet group is connected to the fixing piece; the coil group is connected to the reflecting piece and is arranged opposite to the magnet group; the optical module is connected to the fixing piece, the optical module is provided with an optical axis, and the optical axis and the reflecting surface intersect to form an included angle a; the control circuit board is connected to the fixing piece, and the control circuit board is electrically connected with the coil assembly; when the coil group is electrified, the magnet group drives the reflecting part to move through the coil group so as to change the included angle a; according to the utility model, the magnet group and the coil group can directly drive the reflection piece to move so as to adjust the light refraction angle of the optical module, the structure is simple, and the structural size is small.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a reflection module. Background Art

[0002] Most of the existing optical devices change the light refraction angle by driving a mirror to rotate through a motor. This way of changing the light refraction angle has a complex structure and a large structural size. For example, a galvanometer housing, a galvanometer stator, an installation method and a galvanometer motor disclosed in the patent No. CN115912746A provide a galvanometer motor that can be used to drive a mirror to rotate to change the light refraction angle. The structure of this galvanometer motor is complex and the structural size is large. Another example is an angle magnification MEMS galvanometer and a lidar emission system disclosed in the patent No. CN217820834U. This patent adjusts the incident angle of the light beam by driving a rotating shaft to rotate through a driver, so that the rotating shaft drives a reflective metasurface to rotate. The structure is complex and the structural size is large. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a reflection module with a simple structure and a small structural size.

[0004] To achieve the above purpose, the utility model provides a reflection module, which includes a fixing member, a reflecting member, a magnet group, a coil group and an optical module; the reflecting member is movably connected to the fixing member, and the reflecting member has a reflecting surface; the magnet group is connected to the fixing member; the coil group is connected to the reflecting member and is disposed opposite to the magnet group; the optical module is connected to the fixing member, the optical module has an optical axis, and the optical axis and the reflecting surface intersect to form an included angle a; the control circuit board is connected to the fixing member, and the control circuit board is electrically connected to the coil group; wherein, when the coil group is powered on, the magnet group drives the reflecting member to move through the coil group to change the included angle a.

[0005] In some embodiments, the reflecting member includes a bracket, the bracket is movably connected to the fixing member, and the reflecting surface is disposed on the bracket.

[0006] In some embodiments, the reflecting member includes a bracket and a reflecting mirror, the bracket is movably connected to the fixing member, the reflecting mirror is fixedly connected to the reflecting mirror, and the reflecting surface is disposed on the reflecting mirror.

[0007] In some embodiments, the magnet group includes a first magnet and a second magnet. The first magnet is connected to one side of the fixing member, and the second magnet is connected to the other side of the fixing member. The coil group includes a first coil and a second coil. The first coil is connected to one side of the reflecting member and is disposed opposite to the first magnet, and the second coil is connected to the other side of the reflecting member and is disposed opposite to the second magnet.

[0008] In some embodiments, there is a gap between the fixing member and the reflecting member.

[0009] In some embodiments, an elastic member is further included, and the reflecting member is movably connected to the fixing member through the elastic member.

[0010] In some embodiments, a position sensor and an induction magnet are further included. The position sensor is connected to the fixing member, the position sensor is electrically connected to the control circuit board, and the induction magnet is connected to the reflecting member and is disposed opposite to the position sensor.

[0011] In some embodiments, the fixing member includes a fixing base and a first housing. The fixing base is connected to the first housing, and the reflecting member is movably connected to the fixing base.

[0012] In some embodiments, the optical module includes a second housing and an optical transmitter. The second housing is connected to the fixing member, the optical transmitter is disposed in the second housing, and the optical transmitter has the optical axis.

[0013] In some embodiments, the second housing is provided with an optical path avoidance window.

[0014] Compared with the prior art, the reflection module provided by the embodiment of the present invention has the following beneficial effects: (1) By respectively arranging the magnet group and the coil group on the fixing member and the reflecting member, when the coil group is powered by the control circuit board to make the coil group energized, the coil group generates an electromagnetic field that interacts with the magnet group, so that the magnet group can drive the reflecting member to move through the coil group to change the included angle a, achieving the purpose of changing the refraction angle of the light of the optical module; compared with the prior art method of driving the mirror to rotate by a motor, the present reflection module can save components such as the motor rotor and the motor stator by directly driving the reflecting member to rotate through the magnet group and the coil group, has a simpler structure, a smaller structural size, and lower production costs.

[0015] (2) By respectively arranging the magnet group and the coil group on the fixing member and the reflecting member, when the control circuit board disconnects the current of the coil group to de-energize the coil group, the coil group will lose the electromagnetic field and no longer interact with the magnet group, thereby avoiding magnetic interference of the magnet group on the reflecting member and being beneficial to improving the accuracy of controlling the light refraction angle of the optical module. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of a reflection module provided by an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of the intersection of the reflecting surface and the optical axis provided by an embodiment of the present invention;

[0018] Figure 3 is an exploded view of a reflection module provided by an embodiment of the present invention;

[0019] Figure 4 is a partial exploded view of a reflection module provided by an embodiment of the present invention;

[0020] Figure 5 is a side view of a reflection module provided by an embodiment of the present invention after ignoring the first housing;

[0021] Figure 6 is a partial cross-sectional view of a reflection module provided by an embodiment of the present invention;

[0022] Figure 7 is Figure 5 the A-A cross-sectional view of;

[0023] Figure 8 is a structural diagram of a fixing base provided by an embodiment of the present invention;

[0024] Figure 9 is a structural diagram of a bracket provided by an embodiment of the present invention.

[0025] In the figure, 1, fixing member; 11, fixing base; 12, first housing; 110, interval; 111, second connection groove;

[0026] 2, reflecting member; 20, reflecting surface; 21, bracket; 22, reflecting mirror; 211, first connection groove; 212, first surface;

[0027] 3, magnet group; 31, first magnet; 32, second magnet;

[0028] 4, coil group; 41, first coil; 42, second coil;

[0029] 5. Optical module; 50. Optical axis; 51. Second housing; 52. Optical transmitter; 511. Optical path avoidance window;

[0030] 6. Position sensor;

[0031] 7. Inductive magnet;

[0032] 8. Control circuit board;

[0033] 9. Elastic member; 91. Connecting spring;

[0034] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0035] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 therefore cannot be understood as a limitation to the present utility model.

[0037] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0038] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0040] As Figure 1-9 shown, a preferred reflection module according to an embodiment of the present utility model includes a fixing member 1, a reflecting member 2, a magnet group 3, a coil group 4, an optical module 5, and a control circuit board 8; the reflecting member 2 is movably connected to the fixing member 1, and the reflecting member 2 has a reflecting surface 20; the magnet group 3 is connected to the fixing member 1; the coil group 4 is connected to the reflecting member 2 and is disposed opposite to the magnet group 3; the optical module 5 is connected to the fixing member 1, the optical module 5 has an optical axis 50, and the optical axis 50 intersects with the reflecting surface 20 to form an included angle a; the control circuit board 8 is connected to the fixing member 1, and the control circuit board 8 is electrically connected to the coil group 4; wherein, when the coil group 4 is powered on, the magnet group 3 drives the reflecting member 2 to move through the coil group 4 to change the included angle a.

[0041] Based on the above technical solution, when the control circuit board 8 supplies power to the coil group 4 to make the coil group 4 powered on, the coil group 4 generates an electromagnetic field to interact with the magnet group 3, so that the magnet group 3 can drive the reflecting member 2 to move through the coil group 4 to change the included angle a, achieving the purpose of changing the refraction angle of the light emitted by the optical module 5; compared with the prior art method of driving a reflecting mirror to rotate by a motor, the present reflection module can save components such as a motor rotor and a motor stator by directly driving the reflecting member 2 to rotate through the magnet group 3 and the coil group 4, has a simpler structure, a smaller structural size, and a lower production cost.

[0042] By respectively arranging the magnet group 3 and the coil group 4 on the fixing member 1 and the reflecting member 2, when the control circuit board 8 disconnects the current of the coil group 4 to make the coil group 4 powered off, the coil group 4 will lose the electromagnetic field and no longer interact with the magnet group 3, thereby avoiding magnetic interference of the magnet group 3 on the reflecting member 2, which is beneficial to improving the accuracy of controlling the refraction angle of the light of the optical module 5.

[0043] The reflection module provided by the present utility model can be applied to any device that needs to change the refraction angle of light, such as a camera device, a lighting device, a light beam reflection device, a laser reflection device, a laser scanning device, a laser printing device, a laser welding device, a laser galvanometer device, etc., and is not limited herein.

[0044] In some embodiments, the control circuit board 8 is electrically connected to the optical module 5.

[0045] The fixing member 1 includes a fixing base 11 and a first outer shell 12. The fixing base 11 is connected to the first outer shell 12, and the reflecting member 2 is movably connected to the fixing base 11.

[0046] In this embodiment, the first outer shell 12 includes a first half shell 121 and a second half shell 122 detachably connected to the first half shell 121. The detachable first half shell 121 and the second half shell 122 are assembled to form the first outer shell 12, facilitating the disassembly and assembly of the components of the reflection module.

[0047] The optical module 5 includes a second outer shell 51 and an optical transmitter 52. The second outer shell 51 is connected to the fixing member 1, and the optical transmitter 52 is disposed inside the second outer shell 51. The optical transmitter 52 has an optical axis 50.

[0048] The optical transmitter 52 can be a laser transmitter 52, an LED light transmitter 52, or any other optical transmitter 52 capable of emitting light, which is not limited herein.

[0049] The second outer shell 51 is provided with an optical path avoidance window 511. The optical path avoidance window 511 is used to ensure that the refraction range of the reflection surface 20 is not blocked during the operation of the reflection module, so that the reflection surface 20 can obtain a larger reflection angle range.

[0050] In this embodiment, the reflecting member 2 includes a bracket 21 and a reflecting mirror 22. The bracket 21 is movably connected to the fixing member 1, and the reflecting mirror 22 is fixedly connected to the bracket 21. The reflection surface 20 is disposed on the reflecting mirror 22.

[0051] In some other embodiments, the reflecting member 2 includes a bracket 21. The bracket 21 is movably connected to the fixing member 1, and the reflection surface 20 is disposed on the bracket 21. The bracket 21 has a first surface 212, and the first surface 212 is set as a mirror surface to form the reflection surface 20. The first surface 212 can reflect light, and there is no need to additionally install a reflecting mirror 22 to reflect light. The first surface 212 can be set as a mirror surface on the bracket 21 by any method such as polishing or coating.

[0052] The magnet group 3 includes a first magnet 31 and a second magnet 32. The first magnet 31 is connected to one side of the fixing member 1, and the second magnet 32 is connected to the other side of the fixing member 1. The coil group 4 includes a first coil 41 and a second coil 42. The first coil 41 is connected to one side of the bracket 21 and is disposed opposite to the first magnet 31, and the second coil 42 is connected to the other side of the bracket 21 and is disposed opposite to the second magnet 32.

[0053] There is a gap 110 between the fixing member 1 and the reflecting member 2. The gap 110 is used to avoid the risk of interference between the reflecting member 2 and the fixing member 1 when the reflecting member 2 moves.

[0054] Specifically, the spacer 110 is disposed between the fixing seat 11 and the bracket 21 .

[0055] A reflective module provided in an embodiment of the utility model further includes an elastic member 9, and the reflective member 2 is movably connected to the fixing member 1 through the elastic member 9. The elastic member 9 is used to connect the reflective member 2 and the fixing member 1 respectively, so that the reflective member 2 and the fixing member 1 can be movably connected, and when the coil group 4 loses power, the reflective member 2 can be driven back to the initial position by the elastic force of the elastic member 9.

[0056] Optionally, the elastic member 9 includes one or more connecting springs 91. Two ends of the connecting spring 91 are respectively connected to the fixing member and the reflecting member.

[0057] In this embodiment, the elastic member 9 includes a plurality of connecting springs.

[0058] In some embodiments, a conductive spring is further included, and the control circuit board 8 is electrically connected to the coil group 4 through the conductive spring. The conductive spring can realize the movable connection and electrical connection between the control circuit board 8 and the coil, which has the advantage of simple structure and process, and reduces production cost.

[0059] In some other embodiments, the control circuit board 8 may also be electrically connected to the coil assembly 4 through any elastic conductive member capable of conducting current, such as wires and connecting terminals.

[0060] In this embodiment, the control circuit board 8 is a flexible control circuit board 8 .

[0061] A first connecting groove 211 recessed inwardly is provided on the side of the reflector 2 facing away from the reflective surface 20, a second connecting groove 111 recessed inwardly is provided on the side of the fixing member 1 facing away from the reflector 2, a through hole is provided at the bottom of the second connecting groove 111, one end of the elastic component is connected to the groove wall of the first connecting groove 211, and the other end passes through the through hole and is connected to the groove wall of the second connecting groove 111. The first connecting groove 211, the through hole, and the second connecting groove 111 are used, and the two ends of the elastic component are connected to the first connecting groove 211 and the second connecting groove 111 respectively, which can play a role of avoiding air during the movement of the reflector 2, so as to avoid interference between the fixing member 1 and the reflector 2.

[0062] The embodiment of the utility model also provides a position sensor 6 and an induction magnet 7. The position sensor 6 is connected to the fixing member 1. The position sensor 6 is electrically connected to the control circuit board 8. The induction magnet 7 is connected to the reflecting member 2 and is arranged opposite to the position sensor 6.

[0063] In this embodiment, the position sensor 6 is mounted on the control circuit board 8, and the induction magnet 7 is mounted on the bracket 21.

[0064] In this embodiment, the number of the induction magnets 7 is two, and the two induction magnets 7 are respectively connected to both sides of the bracket 21. The number of the position sensors 6 is two, and the two position sensors 6 are used to respectively detect the magnetic field changes of the two induction magnets 7.

[0065] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A reflection module, characterized in that Comprising: A fixing member; A reflecting member, the reflecting member is movably connected to the fixing member, and the reflecting member has a reflecting surface; A magnet group, the magnet group is connected to the fixing member; A coil group, the coil group is connected to the reflecting member and is arranged opposite to the magnet group; An optical module, the optical module is connected to the fixing member, the optical module has an optical axis, and the optical axis and the reflecting surface intersect to form an included angle a; A control circuit board, the control circuit board is connected to the fixing member, and the control circuit board is electrically connected to the coil group; Wherein, when the coil group is powered on, the magnet group drives the reflecting member to move through the coil group to change the included angle a.

2. The reflection module according to claim 1, characterized in that, The reflecting member includes a bracket, the bracket is movably connected to the fixing member, and the reflecting surface is arranged on the bracket.

3. The reflection module according to claim 1, characterized in that, The reflecting member includes a bracket and a reflecting mirror, the bracket is movably connected to the fixing member, the reflecting mirror is fixedly connected to the reflecting mirror, and the reflecting surface is arranged on the reflecting mirror.

4. The reflection module according to claim 1, wherein The magnet group includes a first magnet and a second magnet, the first magnet is connected to one side of the fixing member, and the second magnet is connected to the other side of the fixing member; The coil group includes a first coil and a second coil, the first coil is connected to one side of the reflecting member and is arranged opposite to the first magnet, and the second coil is connected to the other side of the reflecting member and is arranged opposite to the second magnet.

5. The reflection module according to claim 1, wherein, There is a gap between the fixing member and the reflecting member.

6. The reflection module according to claim 1, wherein Further comprising an elastic member, and the reflecting member is movably connected to the fixing member through the elastic member.

7. The reflection module according to claim 1, wherein Further comprising a position sensor and an induction magnet, the position sensor is connected to the fixing member, the position sensor is electrically connected to the control circuit board, and the induction magnet is connected to the reflecting member and is arranged opposite to the position sensor.

8. The reflection module according to any one of claims 1-7, characterized in that, The fixing member includes a fixing base and a first housing, the fixing base is connected to the first housing, and the reflecting member is movably connected to the fixing base.

9. The reflection module according to any one of claims 1-7, characterized in that, The optical module includes a second housing and an optical transmitter, the second housing is connected to the fixing member, the optical transmitter is arranged in the second housing, and the optical transmitter has the optical axis.

10. The reflection module according to claim 9, wherein The second housing is provided with an optical path avoidance window.

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