Galvanometer and ray machine
By setting two or three driving components in the galvanometer on both sides of the lens adjacent to each other, the problem of complex driving components in the prior art is solved, the effect of reducing processing difficulty and cost is achieved, and stability is improved.
Patent Information
- Application Number
- CN202422384047.4
- 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 driving components of existing galvanometers are complex in structure, resulting in high processing difficulty and high cost.
Two or three driving components are respectively arranged on both sides adjacent to the lens, and the drive slides are inclined about the first axis or the second axis by applying force in different directions, thereby reducing the number of configurations of the driving components.
It reduces processing difficulty and complexity, saves costs, and improves the stability of the galvanometer.
Smart Images
Figure CN223244892U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of projection display technology, and in particular includes a galvanometer and an optical machine including the galvanometer. Background Art
[0002] Common galvanometers are usually configured to tilt the lens around two intersecting axes, that is, the lens can tilt in four different directions. In order to drive the lens to tilt in four positions, four pairs of magnets and coils are usually configured. The four magnets are set opposite each other in pairs around the lens, and the coils are used to generate a magnetic field to attract or repel the magnets, thereby driving the lens to deflect. However, in actual use, the structure of the four magnets is relatively complicated. Utility Model Content
[0003] The present application discloses a galvanometer and an optical machine, which are beneficial to reducing the complexity of components and thus reducing costs.
[0004] In a first aspect, the present application relates to a galvanometer, comprising:
[0005] carrier;
[0006] a slide, arranged to overlap the stage in a first direction, the slide being configured to be tiltable relative to the stage about a first axis and a second axis;
[0007] a lens fixed on the slide, for receiving and refracting the outgoing light; the lens can be tilted around the first axis or the second axis driven by the slide; and
[0008] A plurality of driving components, for driving the slide to tilt around the first axis or the second axis;
[0009] There are two or three driving components, each of which is disposed on one side of the lens, and at least two driving components are disposed on two adjacent sides of the lens.
[0010] The galvanometer provided in the present application is configured with two or three drive components, and the drive components are configured at least on two adjacent sides of the lens. By applying forces in different directions to the carrier, the carrier can be driven to rotate around the first axis or the second axis. Therefore, compared with the existing design that requires drive components to be installed on all four sides of the lens, the number of drive components can be reduced to two or three, which is beneficial to reducing processing difficulty and complexity and saving costs.
[0011] In one embodiment, each of the driving components includes at least one magnet and at least one driving wire group, the magnet is arranged on the carrier, and the driving wire group is arranged on the carrier, for conducting current to generate a reaction force to drive the magnet to move.
[0012] In one embodiment, the magnet is located on one side of the driving wire group along the first direction.
[0013] In one embodiment, the magnet is aligned with the driving wire set in the first direction.
[0014] In one embodiment, the angle between the magnetization direction of the magnet and the direction of the current in the corresponding driving wire group is 70°-110°.
[0015] In one embodiment, the driving wire set includes a coil, and the magnetic poles of the magnet are perpendicular to a surface of the coil.
[0016] In one embodiment, the driving wire group includes a coil, and the coil includes a plurality of current wires close to the magnet and a conductive wire away from the magnet; the current wire is used to generate a reaction force acting on the magnet, and the conductive wire is spaced apart from the current wire.
[0017] In one embodiment, the driving line group includes a plurality of current lines arranged in parallel, and the plurality of current lines are connected in parallel.
[0018] In one embodiment, the driving wire group is disposed on a side surface of the carrier or embedded inside the carrier.
[0019] In a second aspect, the present application also relates to an optical machine, comprising:
[0020] The light source module is used to emit image light; and the galvanometer is used to receive and refract the image light.
[0021] The optical machine provided in the present application can reduce the number of drive component configurations to two or three by adopting the galvanometer in the above embodiment, which is beneficial to reducing the difficulty and complexity of processing and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0023] Figure 1 This is a schematic structural diagram of a galvanometer in an embodiment provided in this application.
[0024] Figure 2 for Figure 1 Schematic diagram of the explosion structure.
[0025] Figure 3 A schematic diagram of the exploded structure of a galvanometer in another embodiment provided in this application.
[0026] Figure 4 This is a schematic diagram of the positions of magnets and coils in an embodiment provided in this application.
[0027] Figure 5 This is a schematic diagram of the positions of magnets and coils in another embodiment provided in this application.
[0028] Figure 6 This is a schematic diagram of the positions of magnets and coils in another embodiment provided by the present application.
[0029] Figure 7 This is a schematic diagram of a first driving state of a driving component in an embodiment provided in the present application.
[0030] Figure 8 This is a schematic diagram of the second driving state of a driving component in an embodiment provided in the present application.
[0031] Figure 9 A schematic diagram of the exploded structure of a galvanometer in another embodiment provided in this application.
[0032] Figure 10 This is a schematic diagram of the structure of an optical machine in an embodiment provided in this application.
[0033] Description of main component symbols
[0034] Galvanometer 100
[0035] Stage 10
[0036] Accommodation hole 11
[0037] Lens 20
[0038] Slide 30
[0039] Deflection unit 31
[0040] Connecting arm 33
[0041] Fixing portion 35
[0042] Drive assembly 50
[0043] Magnet 51
[0044] Magnetic Pole 511
[0045] Drive line group 53
[0046] Current line 531
[0047] Gap 532
[0048] Conductive line 533
[0049] Optical Machine 200
[0050] Light source module 210
[0051] First direction X
[0052] Second direction Y
[0053] The third direction Z
[0054] Magnetization direction M
[0055] First axis O1
[0056] Second axis O2
[0057] Image light L1
[0058] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0059] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0060] 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.
[0061] It should be noted that the concepts of "first" and "second" mentioned in this application 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.
[0062] Please also refer to Figure 1 and Figure 2The galvanometer 100 provided in an embodiment of the present application includes a stage 10, a lens 20, a carrier 30, and a plurality of drive assemblies 50. The carrier 30 is arranged to overlap with the stage 10 in the first direction X, and the carrier 30 is configured to be able to tilt relative to the stage 10 around the first axis O1 and the second axis O2. The lens 20 is fixed on the carrier 30 and is used to receive and refract the outgoing light. The lens 20 can be driven by the carrier 30 to tilt relative to the stage 10 around the first axis O1 or the second axis O2. The drive assembly 50 is used to drive the carrier 30 to tilt around the first axis O1 or the second axis O2.
[0063] Specifically, the carrier 10 is a plate for supporting the carrier 30. In this embodiment, the carrier 10 may be a printed circuit board and may be configured with circuitry for controlling the drive assembly 50. The carrier 10 is provided with a receiving hole 11, so that when the carrier 30 is secured to the carrier 10, the lens 20 can be received in the receiving hole 11, and light can pass through the receiving hole 11 and be incident on the lens 20.
[0064] The slide 30 includes a deflection unit 31, a connecting arm 33, and a fixing unit 35. The deflection unit 31 is connected to the lens 20, and the fixing unit 35 is disposed around the deflection unit 31 for fixed connection to the stage 10. The connecting arm 33 is disposed between the deflection unit 31 and the fixing unit 35, so that the deflection unit 31 is configured to be tiltable relative to the fixing unit 35 about a first axis O1 and a second axis O2. This allows the lens 20 fixed to the deflection unit 31 to be tilted relative to the stage 10 about the first axis O1 and the second axis O2. The first axis O1 and the second axis O2 are perpendicular to each other and are both perpendicular to the first direction X.
[0065] In this embodiment, the galvanometer 100 further defines a second direction Y and a third direction Z. The second direction Y and the third direction Z are both perpendicular to the first direction X. The slide 30 is a quadrilateral, and the sides of the slide 30 are parallel to the second direction Y and the third direction Z, respectively.
[0066] In this embodiment, the carrier 30 and the carrier 10 can be directly connected by silicone, or directly connected by other adhesives, or connected by studs, and this application does not impose any restrictions on this.
[0067] In this embodiment, there are two driving components 50, each driving component 50 includes a magnet 51 and a driving wire group 53 corresponding to the magnet 51. The magnet 51 is fixed on the carrier 30, and the driving wire group 53 is set on the carrier 10. The driving wire group 53 is used to conduct current to generate a reaction force acting on the magnet 51, thereby driving the magnet 51 to move, and then driving the deflection part 31 to deflect.
[0068] In another embodiment, see Figure 3 Each driving assembly 50 includes two magnets 51 and two driving wire groups 53, and each driving wire group 53 corresponds to one magnet 51. In other embodiments, each driving assembly 50 may also include more than two magnets 51, and the number of driving wire groups 53 may not correspond to the number of magnets 51. For example, the driving assembly 50 may include only one magnet 51 and multiple driving wire groups 53 corresponding to the magnet 51, or the driving assembly 50 may include multiple magnets 51 and one driving wire group 53 corresponding to multiple magnets 51. The present application does not limit the specific number of magnets 51 and driving wire groups 53 in each driving assembly 50.
[0069] See also Figure 4 In this embodiment, the magnet 51 is positioned on one side of the drive wire assembly 53 along the first direction X. The angle between the magnetization direction M of the magnet 51 and the direction of the current flowing in the corresponding drive wire assembly 53 is 70°-110°. That is, the magnetic pole 511 of the magnet 51 is positioned toward the carrier 10, and the magnetization direction M of the magnet 51 is substantially parallel to the first direction X, thereby making the magnetization direction M of the magnet 51 substantially perpendicular to the direction of the current flowing in the drive wire assembly 53. According to the left-hand rule, when the magnetization direction M of the magnet 51 is perpendicular to the direction of the current flowing in the drive wire assembly 53, the Lorentz force exerted on the drive wire assembly 53 after power is applied is maximized. Therefore, by setting the angle between the magnetization direction M of the magnet 51 and the direction of the current flowing in the corresponding drive wire assembly 53 to 70°-110°, the Lorentz force exerted on the drive wire assembly 53 is more effective, and the reaction force exerted on the magnet 51 is also more effective, thereby increasing the movement amplitude of the magnet 51 and, in turn, the tilt amplitude of the lens 20.
[0070] In this embodiment, the drive line group 53 is a coil structure, which includes multiple current lines 531. The plane of the coil formed by the multiple current lines 531 is perpendicular to the first direction X. The magnetic pole 511 of the magnet 51 is set toward the surface of the coil, so that the Lorentz force exerted on the current line 531 when current is conducted is parallel to the first direction X, thereby causing the magnet 51 to be subjected to a reaction force in the first direction X.
[0071] In this embodiment, the driving wire group 53 may be embedded in the interior of the carrier 10 or may be disposed on the surface of the carrier 10 , and this application does not impose any limitation on this.
[0072] In another embodiment, see Figure 5The magnet 51 is aligned with the drive wire group 53 in the first direction X, so that the drive wire group 53 passes through the magnetic flux lines of the magnetic field generated by the magnet 51. That is, the magnetic poles 511 of the magnet 51 are arranged corresponding to the drive wire group 53 in the first direction X, so that the magnetic flux lines emanating from the magnetic poles 511 can cover as much of the drive wire group 53 as possible, thereby allowing the reaction force generated by the drive wire group 53 to fully act on the magnet 51. The drive wire group 53 includes a plurality of parallel current lines 531. The plurality of current lines 531 are arranged in parallel so that the current in each current line 531 flows in the same direction, thereby causing the magnet 51 to be subjected to a reaction force along the first direction X.
[0073] In yet another embodiment, see Figure 6 The driving wire group 53 may further include a coil, which includes a plurality of current wires 531 on a side close to the magnet 51 and a plurality of conductive wires 533 on a side away from the magnet 51, with the current wires 531 and the conductive wires 533 spaced apart. Specifically, when the magnet 51 is aligned with the driving wire group 53 in the first direction X, the magnet 51 may also be driven by the coil. By providing a gap 532 between the current wires 531 and the conductive wires 533, the conductive wires 533 may be kept away from the magnet 51, thereby preventing the conductive wires 533 from affecting the magnet 51, and further ensuring that the magnet 51 is primarily affected by the plurality of current wires 531 arranged in parallel. In other embodiments, a magnetic resistance element (not shown) may also be provided between the conductive wires 533 and the current wires 531, the magnetic resistance element being used to block the conductive wires 533, thereby further preventing the conductive wires 533 and the current wires 531 from interfering with each other.
[0074] See also Figure 7 In this embodiment, the two magnets 51 are respectively disposed on two adjacent sides of the lens 20, that is, the two magnets 51 are respectively located on one side of the lens 20 along the second direction Y and the third direction Z. By adjusting the direction of the current flowing in the drive wire group 53, Lorentz forces in different directions can be generated, so that the magnets 51 move closer to or farther away from the carrier 10 under the action of the reaction force of the Lorentz force, thereby achieving tilting around the first axis O1 or the second axis O2.
[0075] For example, when the two magnets 51 are simultaneously subjected to a force in a direction away from the carrier 10, the two magnets 51 move in a direction away from the carrier 10, thereby driving the lens 20 to tilt around the first axis O1. Figure 8 As shown, when the magnet 51 located on the side of the lens 20 along the second direction Y is subjected to a force in the direction close to the carrier 10, and the magnet 51 located on the side of the lens 20 along the third direction Z is subjected to a force in the direction away from the carrier 10, the two magnets 51 move in different directions, thereby driving the lens 20 to tilt around the second axis O2.
[0076] The galvanometer 100 provided in the embodiment of the present application sets the number of drive components 50 to two, and the two drive components 50 are respectively arranged on two adjacent sides of the lens 20. This can drive the lens 20 to tilt around the first axis O1 or the second axis O2 by applying forces in different directions to the carrier 30. Compared with the existing design that requires the installation of drive components 50 on all four sides of the lens 20, the number of drive components 50 configurations can be reduced, which is beneficial to reducing the processing difficulty and complexity and saving costs.
[0077] In another embodiment, see Figure 9 The number of drive assemblies 50 is three. At least two drive assemblies 50 are disposed on two adjacent sides of the lens 20. Specifically, in this embodiment, two drive assemblies 50 are disposed at opposite ends of the lens 20 in the third direction Z, and one drive assembly 50 is disposed on one side of the lens 20 in the second direction Y. By adjusting the direction of the current flowing in the drive wire assembly 53, the direction of the reaction force of the Lorentz force on each magnet 51 can be controlled, thereby controlling the tilt of the lens 20 about the first axis O1 or the second axis O2.
[0078] In other embodiments, two driving components 50 may be located at opposite ends of the lens 20 in the second direction Y, and one driving component 50 may be located on one side of the lens 20 in the third direction Z. This application does not impose any limitation on this.
[0079] The galvanometer mirror 100 provided in the embodiment of the present application has three drive assemblies 50, with at least two drive assemblies 50 disposed on adjacent sides of the lens 20. This eliminates the need for four drive assemblies 50 to tilt the lens 20 about the first axis O1 or the second axis O2, thereby reducing processing difficulty and complexity and saving costs. Furthermore, compared to the case of having two drive assemblies 50, having three drive assemblies 50 improves fault tolerance, preventing the galvanometer mirror 100 from malfunctioning if one drive assembly 50 malfunctions, thereby improving the stability of the galvanometer mirror 100.
[0080] See also Figure 10 The present invention also provides an optical engine 200, which includes a light source module 210 and the galvanometer mirror 100 of the above embodiment. The light source module 210 is used to emit image light L1, and the galvanometer mirror 100 is used to receive and refract the emitted image light L1. The galvanometer mirror 100 can emit the image light L1 in different directions by tilting the lens 20.
[0081] The optical machine 200 provided in the embodiment of the present application can reduce the number of drive components 50 configured to two or three by setting the galvanometer 100 in the above embodiment, which is beneficial to reducing the difficulty and complexity of processing and saving costs.
[0082] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A galvanometer, characterized in that: include: carrier; a slide, arranged to overlap the stage in a first direction, the slide being configured to be tiltable relative to the stage about a first axis and a second axis; a lens fixed on the slide, for receiving and refracting the outgoing light; the lens can be tilted around the first axis or the second axis driven by the slide; and A plurality of driving components, for driving the slide to tilt around the first axis or the second axis; There are two or three driving components, each of which is disposed on one side of the lens, and at least two driving components are disposed on two adjacent sides of the lens.
2. The galvanometer according to claim 1, characterized in that Each of the driving components includes at least one magnet and at least one driving wire group. The magnet is arranged on the carrier, and the driving wire group is arranged on the carrier for conducting current to generate a reaction force to drive the magnet to move.
3. The galvanometer according to claim 2, characterized in that The magnet is located on one side of the driving wire group along the first direction.
4. The galvanometer according to claim 2, characterized in that The magnet is aligned with the driving wire set in the first direction.
5. The galvanometer according to claim 2 or 3, characterized in that: The angle between the magnetization direction of the magnet and the direction of the current in the corresponding driving wire group is 70°-110°.
6. The galvanometer according to claim 2 or 3, characterized in that: The driving wire group includes a coil, and the magnetic poles of the magnet are arranged toward the surface of the coil.
7. The galvanometer according to claim 2 or 3, characterized in that: The driving wire group includes a coil, which includes multiple current wires on a side close to the magnet and a conductive wire on a side away from the magnet; the current wires are used to generate a reaction force acting on the magnet, and the conductive wires are spaced apart from the current wires.
8. The galvanometer according to claim 2 or 3, characterized in that: The driving line group includes a plurality of current lines arranged in parallel, and the plurality of current lines are connected in parallel.
9. The galvanometer according to claim 2 or 3, characterized in that: The driving wire group is arranged on a side surface of the carrier and / or embedded in the carrier.
10. An optical machine, characterized in that: include: A light source module, used for emitting image light; The galvanometer according to any one of claims 1 to 9, configured to receive and refract the image light.