Galvanometer structure and projection ray machine
By using the design of stacking parallel conductors on the reed and magnetic blocks on the upper and lower layers in the galvanometer structure, the problems of many components, complex assembly and high cost in the traditional galvanometer structure are solved, and higher force and projected image resolution are achieved.
Patent Information
- Application Number
- CN202422381801.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The traditional galvanometer structural components are large, the assembly process is cumbersome, the cost is high, and the amplitude is difficult to meet the actual use needs.
The structure design is adopted in which the wires arranged parallelly on the reed are laminated up and down, and the driving current is transmitted through the wires to move the magnetic block under force, drive the light-transmitting parts to deflect, simplify the assembly process and reduce costs.
On the basis of increasing the force, the number of components is reduced, the assembly process is simplified, and the structural cost is reduced, while the resolution of the projected image is improved.
Smart Images
Figure CN223244891U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a galvanometer structure and a projection optical machine including the galvanometer structure. Background Art
[0002] The galvanometer is an important structure in the projection device, which is used to deflect when driven by a brake component to adjust the resolution of the projection device.
[0003] Traditional brake parts have many components, complicated assembly procedures, and high costs, which may make it difficult for the galvanometer's amplitude to meet actual usage requirements. Utility Model Content
[0004] The present application discloses a galvanometer structure and a projection optical machine including the galvanometer structure, which can improve the acting force while reducing the number of components, simplifying the assembly process and lowering the structural cost.
[0005] In a first aspect, the present disclosure relates to a galvanometer structure, comprising: a reed formed with an opening; a light-transmitting member fixed on the reed and corresponding to the position of the opening, for refracting image light; a magnet assembly, comprising a magnetic block fixedly connected to the reed; and a carrier, comprising a plurality of wires, the plurality of wires being located on a side of the magnet assembly away from the reed, the plurality of wires and the orthographic projection of the magnet assembly on the reed at least partially overlapping, and at least some of the plurality of wires being parallel; wherein the magnetic block is forced to move when the plurality of wires transmit a driving current, so as to drive the light-transmitting member to deflect around an axis, thereby adjusting the emission direction of the image light, and the movement direction of the magnetic block is perpendicular to the plane where the plurality of wires are located.
[0006] In which, the carrier includes at least one wire group, each of the wire groups includes at least part of the multiple wires, the magnet assembly includes at least one magnetic block, and the at least one wire group corresponds to the at least one magnetic block one by one; the positive projection of each wire group and the corresponding magnetic block on the spring sheet at least partially overlaps, and each magnetic block is subjected to force movement when the corresponding wire group transmits a driving current.
[0007] Wherein, when the at least one wire group is energized, the at least one magnetic block drives the light-transmitting member to deflect around the first axis and the second axis in a time-sharing manner, and the first axis and the second axis have a non-zero angle.
[0008] The light-transmitting element has a light-receiving surface for receiving image light, and the light-receiving surface has two diagonals; the at least one magnetic block drives the light-transmitting element to deflect around the two diagonals of the light-receiving surface in a time-sharing manner when the at least one wire group is energized.
[0009] In which, the carrier includes a first wire group and a second wire group, and the magnet assembly includes a first magnetic block and a second magnetic block; the first magnetic block is forced to move when the first wire group transmits a driving current, and the second magnetic block is forced to move when the second wire group transmits a driving current. When the first magnetic block and the second magnetic block are forced to move, they drive the light-transmitting element to deflect around the first axis and the second axis in a time-sharing manner.
[0010] Wherein, the magnetization direction of the magnetic block is perpendicular to the movement direction of the magnetic block.
[0011] Wherein, the carrier further comprises a substrate, and the light-transmitting member is fixedly connected to the substrate;
[0012] The plurality of wires are located on the surface of the substrate and between the substrate and the magnet assembly; or the plurality of wires are embedded in the substrate.
[0013] Wherein, the light-transmitting member is directly attached to the reed or fixed to the reed via a fixing member.
[0014] Wherein, at least part of the conductive wires are connected in parallel with each other; or the carrier includes a coil, a magnetoresistive element is formed in the coil, and at least part of the conductive wires are conductive wire segments in the same direction in the coil.
[0015] In a first aspect, the present disclosure relates to a projection optical machine, comprising any of the galvanometer structures described above.
[0016] The galvanometer structure and projection light engine provided by the present disclosure utilizes roughly parallel conductors, stacked one above the other with magnetic blocks. This allows for a greater Ampere force generated by electromagnetic induction within the same space, enabling the driving of heavier structures. Furthermore, the galvanometer structure is simple overall and has relatively few components. Therefore, the galvanometer structure disclosed herein not only improves the force exerted on the magnetic blocks, but also reduces the number of components, simplifies the assembly process, and lowers structural costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 It is a three-dimensional diagram of a galvanometer structure in an embodiment provided by the present disclosure.
[0019] Figure 2 for Figure 1 Exploded diagram of the galvanometer structure.
[0020] Figure 3 for Figure 1 Cross-sectional structure diagram along III-III.
[0021] Figure 4 for Figure 2 Schematic diagram of the force applied to the first magnetic block when the driving current in the first conductor group is directed toward the paper.
[0022] Figure 5 for Figure 2 Schematic diagram of the force acting on the first magnetic block when the driving current in the first wire group is directed outward from the paper.
[0023] Figure 6 This is a schematic diagram of the module structure of the projection light engine provided by the present disclosure.
[0024] Description of main component symbols
[0025] Projection light machine 100
[0026] Galvanometer structure 1
[0027] Stage 10
[0028] Substrate 11
[0029] First opening 111
[0030] Wire 12
[0031] First wire group 121
[0032] Second wire group 122
[0033] The third wire group 123
[0034] Fourth wire group 124
[0035] Magnet assembly 20
[0036] First magnetic block 21
[0037] Second magnetic block 22
[0038] The third magnetic block 23
[0039] Fourth magnetic block 24
[0040] Reed 30
[0041] Main body 31
[0042] Second opening 311
[0043] Lever 32
[0044] Light-transmitting element 40
[0045] Light-receiving surface 41
[0046] Board stud 50
[0047] Image light generating component 2
[0048] Shot 3
[0049] Controller 4
[0050] First axis L1
[0051] Second axis L2
[0052] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0053] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.
[0054] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly attached to the other component or there may be a central component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.
[0055] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0056] In one type of projection equipment, a voice coil motor (VCM) is used as an actuator to drive the galvanometer deflection. A VCM primarily consists of a permanent magnet and a motor. For galvanometers that require two-axis rotation, a VCM typically employs a moving magnet and fixed circuit design.
[0057] One external circuit solution uses an aluminum alloy base as a carrier, pushing the galvanometer's lens body through the reaction force of the Lorentz force on the magnets on the reeds. This solution has a large Lorentz force, but the external circuitry results in a large number of components, a complicated assembly process, and high costs.
[0058] One onboard circuit solution uses a printed circuit board (PCB) as a base, embedding the circuitry within the PCB. Reeds are fixed to board-mounted studs. The reaction force from the Lorentz force on the circuitry, acting on four magnets on the reeds, propels the galvanometer lens. This solution offers advantages such as a small number of components, a simple assembly process, and low raw material costs. However, due to limitations such as the number of onboard circuit turns and the relative position of the magnets and circuitry, the reaction force from the Lorentz force on the magnets is relatively small, making the vibration amplitude difficult to meet practical requirements.
[0059] This disclosure provides a galvanometer structure for use in optical projection machines. Positioned along the image light's emission path, it modulates the light's emission angle to improve the resolution of the projected image. This galvanometer structure not only increases the applied force but also reduces the number of components, simplifies assembly processes, and lowers structural costs.
[0060] Please also refer to Figure 1 and Figure 2 The galvanometer structure 1 provided by the embodiment of the present disclosure includes a carrier 10, a magnet assembly 20, a reed 30 and a light-transmitting member 40. The reed 30 is fixed on the carrier 10, and the magnet assembly 20 and the light-transmitting member 40 are fixed on the reed 30.
[0061] A conductive element is embedded in the stage 10. When this conductor transmits a current signal, the magnet assembly 20 is vibrated by force, thereby causing the light-transmitting element 40 to deflect about its axis. The light-transmitting element 40 is located in the optical path of the image light. When the image light strikes the light-transmitting element 40 with different deflection angles, it experiences different refraction angles. Therefore, the deflection of the light-transmitting element 40 modulates the output angle of the image light.
[0062] In this embodiment, the stage 10 includes a substrate 11. The substrate 11 is an insulating substrate having a rectangular outer contour and a first rectangular opening 111 at its center. The galvanometer structure 1 also includes a plurality of board-mounted studs 50, through which the reed 30 is fixed at the four corners of the substrate 11.
[0063] The carrier 10 also includes a plurality of wires 12. Each wire 12 is embedded in the substrate 11. In this embodiment, the carrier 10 as a whole is a printed circuit board with a multi-layer wiring structure, and the wires 12 are the wiring of each layer in the circuit board. Among the wires 12, at least some of the wires 12 are arranged in parallel and connected in parallel with each other. The parallel wires transmit driving currents in the same direction at the same time. In the present disclosure, "parallel" does not require strict parallelism in the mathematical sense, and a certain error is allowed. For example, in some cases, due to processing errors, etc., an angle close to 0 degrees can be allowed between the wires, so that the wires are approximately parallel or roughly parallel, within a smaller error angle range.
[0064] In this embodiment, all wires 12 are divided into a first wire group 121, a second wire group 122, a third wire group 123, and a fourth wire group 124. The first wire group 121, the second wire group 122, the third wire group 123, and the fourth wire group 124 each include multiple wires 12. The first wire group 121, the second wire group 122, the third wire group 123, and the fourth wire group 124 are each arranged along one edge of the substrate 11.
[0065] The wires 12 in the first wire group 121 are arranged in the same direction and receive driving currents in the same direction at the same time. The wires 12 in the second wire group 122 are arranged in the same direction and receive driving currents in the same direction at the same time. The wires 12 in the third wire group 123 are arranged in the same direction and receive driving currents in the same direction at the same time. The wires 12 in the fourth wire group 124 are arranged in the same direction and receive driving currents in the same direction at the same time.
[0066] The magnet assembly 20 includes a first magnetic block 21, a second magnetic block 22, a third magnetic block 23, and a fourth magnetic block 24. The first magnetic block 21, the second magnetic block 22, the third magnetic block 23, and the fourth magnetic block 24 are spaced apart and located at four edges of the substrate 11. In this embodiment, the first magnetic block 21, the second magnetic block 22, the third magnetic block 23, and the fourth magnetic block 24 are all elongated, and their lengths extend parallel to the edges of the substrate 11 on which they are located.
[0067] The number of wire groups within carrier 10 is identical to the number of magnetic blocks within magnet assembly 20, and they correspond one-to-one. The orthographic projections of corresponding wire groups and magnetic blocks on reed 30 at least partially overlap, ensuring that each wire group is within the magnetic field generated by its corresponding magnetic block. Each magnetic block is designed to be forced to move when its corresponding wire group transmits a drive signal.
[0068] In this embodiment, the first conductor group 121 corresponds to the first magnetic block 21. The first conductor group 121 and the first magnetic block 21 are located on the same side of the substrate 11. The orthographic projections of the first conductor group 121 and the first magnetic block 21 on the reed 30 at least partially overlap. The first conductor group 121 is located within the magnetic field of the first magnetic block 21. When each conductor 12 in the first conductor group 121 transmits a driving current, the first magnetic block 21 is forced to move.
[0069] The second conductor group 122 corresponds to the second magnetic block 22. The second conductor group 122 and the second magnetic block 22 are located on the same side of the substrate 11. The orthographic projections of the second conductor group 122 and the second magnetic block 22 on the reed 30 at least partially overlap. The second conductor group 122 is located within the magnetic field of the second magnetic block 22. When each conductor 12 in the second conductor group 122 transmits a driving current, the second magnetic block 22 is forced to move.
[0070] The third wire group 123 corresponds to the third magnetic block 23 , and the fourth wire group 124 corresponds to the fourth magnetic block 24 . The corresponding relationship will not be further described.
[0071] In at least one alternative embodiment of the present disclosure, to repurpose legacy materials and reduce costs, the number of wire groups within carrier 10 may differ from the number of magnetic blocks within magnet assembly 20. That is, in this alternative embodiment, redundant individual wire groups or individual magnets may exist. For example, in one alternative embodiment, there are n+1 wire groups and n magnetic blocks. There is a one-to-one correspondence between the n wire groups and the n magnetic blocks, but there is one redundant wire group that does not correspond to a magnetic block. In this case, no signal transmission occurs within this redundant wire group.
[0072] The reed 30 is in the shape of a thin sheet. In this embodiment, the reed 30 includes a main body 31. The main body 31 has a generally rectangular outer contour and a rectangular second opening 311 is formed in the center.
[0073] The spring 30 also includes four force arms 32 extending outward from the main body 31. Each force arm 32 extends from one of the four edges of the main body 31 in a direction away from the second opening 311. Each force arm 32 has a generally thin, strip-shaped structure and has a gap between it and the main body 31, allowing the spring 30 to exert a certain elastic force on the position of the force arm.
[0074] The first magnetic block 21, the second magnetic block 22, the third magnetic block 23, and the fourth magnetic block 24 are respectively fixedly connected to the four force arms 32 of the spring 30. The light-transmitting member 40 is fixedly connected to the spring 30 and is located within the second opening 311. The light-transmitting member 40 can be directly attached to the inner wall of the second opening 311 using glue, or it can be fixed to the spring 30 using additional fixing members (not shown).
[0075] The light-transmitting member 40 can be made of a translucent material such as glass or plastic, and is used to refract received image light. In this embodiment, the light-receiving surface 41 of the light-transmitting member 40, which receives image light, is rectangular and has a first axis L1 and a second axis L2. The first axis L1 and the second axis L2 are straight lines corresponding to the two diagonals of the light-receiving surface 41. When the first, second, third, and fourth magnetic blocks 21, 22, 23, and 24 move, the light-transmitting member 40 can deflect around the first and second axes L1 and L2 in a time-sharing manner.
[0076] In at least one alternative embodiment of the present disclosure, the light-transmitting member 40 can deflect only about the first axis L1 or the second axis L2. In at least one alternative embodiment of the present disclosure, the light-receiving surface 41 can be circular or another polygonal shape, and the light-transmitting member 40 can deflect about another axis. For example, when the light-receiving surface 41 is circular, the light-transmitting member 40 deflects about a line defining its diameter. When the light-receiving surface 41 is another polygonal shape, the light-transmitting member 40 deflects about at least one axis of symmetry.
[0077] The force between the magnetic block and the wire group will be described below by taking the first magnetic block 21 and the first wire group 121 as an example.
[0078] Please also refer to Figure 3 and Figure 4 In the vertical direction (regardless of the orientation of the galvanometer structure 1, it is defined as the direction perpendicular to the substrate 11), the substrate 11, the first magnetic block 21 and the reed 30 are stacked in sequence. The wires 12 in the first wire group 121 are embedded in the substrate 11 and are parallel to each other. The magnetic pole direction of the first magnetic block 21 is parallel to the substrate 11 and perpendicular to the first wire group 121. That is, Figure 4 In the shown orientation, the magnetic pole direction of the first magnetic block 21 is horizontal.
[0079] In this embodiment, Figure 4 The left side is the S pole and the right side is the N pole. The magnetic flux lines in the magnetic field of the first magnetic block 21 can pass through Figure 4 The dashed line indicates that Figure 4 It can be seen that at the position where each wire 12 in the first wire group 121 is located, the magnetic field direction of the first magnetic block 21 is approximately horizontal and facing left.
[0080] When each conductor 12 transmits a driving current toward the inside of the paper ( Figure 4 (indicated by the symbol "×"), according to the left-hand rule, the Ampere force F acting on the wire 12 is vertically upward. While the carrier 10 is fixed in position, the first magnetic block 21 is subjected to a reaction force that moves vertically upward. This vertical upward movement of the first magnetic block 21 lifts the reed 30 and the light-transmitting element 40 on the side closest to the first magnetic block 21 upward, while the reed 30 and light-transmitting element 40 on the side away from the first magnetic block 21 remain in place. Therefore, the light-transmitting element 40 can be considered to be deflected to one side.
[0081] See also Figure 5 , when each conductor 12 transmits a driving current out of the paper ( Figure 4 When the left-hand rule indicates that the Ampere force F acting on the wire 12 is vertically downward, the left-hand rule indicates that the Ampere force F acting on the wire 12 is vertically downward. The carrier 10 is fixed in position, and the first magnetic block 21 is subjected to a reaction force that moves vertically downward. This downward movement of the first magnetic block 21 pulls the reed 30 and the light-transmitting member 40 closer to the first magnetic block 21 downward, while the reed 30 and light-transmitting member 40 farther from the first magnetic block 21 remain in place. Therefore, the light-transmitting member 40 can be considered to be deflected in the opposite direction.
[0082] By repeatedly switching the direction of the drive current in the first conductor group 121, the first magnetic block 21 can be controlled to vibrate repeatedly in the up and down directions. Therefore, each corresponding conductor group and magnetic block can be considered a brake element. In this embodiment, the galvanometer structure 1 is equivalent to comprising four independently operating brake elements located at the four edges of the spring 30. By coordinating the operation of these four independently operating brake elements, the light-transmitting element 40 can be deflected along two diagonals in a time-sharing manner.
[0083] In this embodiment, at the same time, two adjacent magnetic blocks among the four magnetic blocks move synchronously (move upward or downward at the same time, and with the same displacement), and the other two also move synchronously.
[0084] When the first and second magnetic blocks 21 and 22 move upward and the third and fourth magnetic blocks 23 and 24 move downward, or when the first and second magnetic blocks 21 and 22 move downward and the third and fourth magnetic blocks 23 and 24 move up and down, the light-transmitting member 40 deflects about the first axis. When the first and fourth magnetic blocks 21 and 24 move upward and the second and third magnetic blocks 22 and 23 move downward, or when the first and fourth magnetic blocks 21 and 24 move downward and the second and third magnetic blocks 22 and 23 move upward, the light-transmitting member 40 deflects about the second axis.
[0085] In this embodiment, based on the left-hand rule, the directions of the drive currents transmitted through the first, second, third, and fourth conductor groups 121, 122, 123, and 124 are controlled to control the movement directions of the first, second, third, and fourth magnetic blocks 21, 22, 23, and 24, respectively. By modulating the switching frequency of the drive current transmission direction, the deflection frequency of the light-transmitting member 40 can be modulated.
[0086] The galvanometer structure 1 disclosed herein, by providing parallel wires 12 and stacking the wires 12 with the magnetic block 21, the second magnetic block 22, the third magnetic block 23, and the fourth magnetic block 24, achieves a greater Ampere force generated by electromagnetic induction within the same space, enabling the driving of heavier structures. Furthermore, the galvanometer structure 1 is simple in overall structure and has relatively few components. Therefore, the galvanometer structure 1 disclosed herein can not only improve the force exerted on the magnetic blocks, but also reduce the number of components, simplify the assembly process, and lower the cost of the structure.
[0087] In addition, the reed 30 of the present disclosure reduces the stiffness of the reed 30 by providing the force arm 32 , and the reed 30 can be driven by a smaller force, which is beneficial to reducing the amplitude of the driving current, thereby reducing energy consumption.
[0088] In other embodiments of the present disclosure, the number of wire groups in the carrier 10 and the number of magnetic blocks in the magnet assembly 20 may vary, as long as the number of wire groups and magnetic blocks are consistent. For example, in at least one alternative embodiment of the present disclosure, one wire group and one magnetic block may be included, and the magnetic block vibrates up and down under the influence of the driving current in the wire group. In this embodiment, the light-transmitting member 40 can only deflect about a single axis. For example, in other alternative embodiments of the present disclosure, two wire groups and two magnetic blocks may be provided in a one-to-one correspondence, or three wire groups and three magnetic blocks may be provided in a one-to-one correspondence, etc.
[0089] In other modified embodiments of the present disclosure, if the magnet assembly 20 includes one, two or three magnetic blocks, it may further include a counterweight block disposed on the edge of the substrate 11 where no magnetic blocks are disposed to balance the weight of the magnetic blocks.
[0090] In at least one modified embodiment of the present disclosure, each wire 12 in the same wire group can be a plurality of wire segments arranged in the same direction in a complete coil. Providing a magnetic resistance element in the coil can prevent the influence of other wires in the coil on the magnetic block.
[0091] In at least one modified embodiment of the present disclosure, the shape of the substrate 11, the shape of the reed 30, the shapes of the first opening 111 and the second opening 311 may not be rectangular. The shapes of the first opening 111 and the second opening 311 may be consistent with the shape of the light-transmitting member 40.
[0092] In at least one modified embodiment of the present disclosure, each wire 12 may be located on the same surface of the substrate 11 rather than being embedded in the substrate 11. That is, in this modified embodiment, each wire 12 is located between the substrate 11 and the magnetic assembly 20.
[0093] See also Figure 6 The optical projection machine 100 provided by the embodiment of the present disclosure includes a galvanometer structure 1, an image light generating component 2, a lens 3 and a controller 4. The controller 4 is electrically connected to the galvanometer structure 1 and the image light generating component 2. The controller 4 is used to control the modulation of the image light generating component 2 to emit image light. The galvanometer structure 1 is located between the image light generating component 2 and the lens 3. And the light-transmitting element (see Figure 2-5 ) is located on the optical path of the image light. The controller 4 outputs the driving current to each wire in the galvanometer structure 1 (see Figure 2-5 ), controlling the deflection of the light-transmitting element 40 so that the image light is emitted at different refraction angles after passing through the light-transmitting element 40.
[0094] Based on the time-sharing deflection of the light-transmitting element 40 around two diagonals, for each pixel of image light, the light-transmitting element 40 can expand the middle pixel area to four pixel areas in succession, utilizing the residual vision of the human eye, which is equivalent to improving the resolution of the projected image.
[0095] The projection optical engine 100 disclosed in the present invention can achieve all the beneficial effects of the above-mentioned galvanometer structure 1 .
[0096] The above descriptions are merely embodiments of the present disclosure and are not intended to limit the patent scope of the present disclosure. Any equivalent structures or equivalent process transformations made using the contents of the present disclosure and the drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present disclosure.
Claims
1. A galvanometer structure, characterized in that: include: a reed formed with an opening; a light-transmitting member fixed on the reed and corresponding to the opening position, for refracting image light; a magnet assembly, comprising a magnetic block fixedly connected to the reed; as well as The carrier comprises a plurality of wires, the plurality of wires being located on a side of the magnet assembly away from the reed, the plurality of wires and an orthographic projection of the magnet assembly on the reed at least partially overlapping, and at least some of the plurality of wires being parallel; The magnetic block is forced to move when the multiple wires transmit driving current, so as to drive the light-transmitting member to deflect around the axis, thereby adjusting the emission direction of the image light, and the movement direction of the magnetic block is perpendicular to the plane where the multiple wires are located.
2. The galvanometer structure according to claim 1, wherein: The carrier includes at least one wire group, each of the wire groups includes at least part of the plurality of wires, the magnet assembly includes at least one magnetic block, and the at least one wire group corresponds to the at least one magnetic block in a one-to-one manner; The orthographic projection of each of the conductive wire groups and its corresponding magnetic block on the spring sheet at least partially overlaps, and each of the magnetic blocks is forced to move when the corresponding conductive wire group transmits a driving current.
3. The galvanometer structure according to claim 2, wherein: When the at least one wire group is energized, the at least one magnetic block drives the light-transmitting member to deflect around a first axis and a second axis in a time-sharing manner, and the first axis and the second axis have a non-zero angle.
4. The galvanometer structure according to claim 3, wherein: The light-transmitting member has a light-receiving surface for receiving image light, and the light-receiving surface has two diagonal lines; When the at least one wire group is energized, the at least one magnetic block drives the light-transmitting element to deflect around the two diagonals of the light-receiving surface in a time-sharing manner.
5. The galvanometer structure according to claim 3, wherein: The carrier includes a first wire group and a second wire group, and the magnet assembly includes a first magnetic block and a second magnetic block; The first magnetic block moves under force when the first wire group transmits a driving current, and the second magnetic block moves under force when the second wire group transmits a driving current. When the first magnetic block and the second magnetic block move under force, the light-transmitting element is driven to deflect around the first axis and the second axis in a time-sharing manner.
6. The galvanometer structure according to claim 1, wherein: The magnetization direction of the magnetic block is perpendicular to the movement direction of the magnetic block.
7. The galvanometer structure according to claim 1, wherein: The carrier further includes a substrate, and the light-transmitting member is fixedly connected to the substrate; The plurality of wires are located on the surface of the substrate and between the substrate and the magnet assembly; or the plurality of wires are embedded in the substrate.
8. The galvanometer structure according to claim 1, wherein: The light-transmitting member is directly attached to the reed or fixed to the reed via a fixing member.
9. The galvanometer structure according to claim 1, wherein: At least some of the conductive wires are connected in parallel; or The carrier includes a coil, a magnetoresistive element is formed in the coil, and at least part of the conductive wires are conductive wire segments in the same direction in the coil.
10. A projection light machine, characterized in that: The invention comprises a galvanometer structure as claimed in any one of claims 1 to 9.