Dimming mechanism and light source device

Abstract

The utility model discloses a dimming mechanism, which is arranged on a substrate and comprises a collimating lens assembly, a light source assembly and a light source assembly, the mounting bracket assembly is arranged on the substrate and is rotationally connected with the lens bracket through a deflection connecting assembly; the deflection connecting assembly is rotationally connected with the mounting bracket assembly and the lens bracket, and a rotating shaft, rotationally connected with the mounting bracket assembly, of the deflection connecting assembly and a rotating shaft, rotationally connected with the lens bracket, of the deflection connecting assembly are arranged in a non-coaxial mode; and the driving assembly is used for driving the deflection connecting assembly to enable the lens bracket to eccentrically rotate. Different light emitting effects can be achieved without replacing the light source assembly, the switching speed of different light effect modes is high, the response speed is high, and switching is convenient and fast; meanwhile, by adjusting the relative position relation of the luminous body and the collimating lens, the collimating lens is always aligned with the optical center of the luminous body needing to emit light for optimal light receiving, the optical expansion amount is almost free of loss, and the light emitting efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, and more specifically to a dimming mechanism and a light source device. Background Art

[0002] Because LED light sources have the advantages of long life, low energy consumption and high light efficiency, LED illuminants are usually used as light sources in various lighting fields. When the stage light source structure collimates the LED illuminant, it usually aligns the optical center of the LED illuminant through a collimating lens to achieve the best collimation effect. However, the light spot effect of a single LED illuminant is a single effect. If it is necessary to achieve a light spot effect of different color temperatures, different colors or different shapes, the conventional practice is to replace different light sources and then install them, which is time-consuming and labor-intensive and cannot meet current needs well. If two different LED light sources are collimated by a fixed collimating lens, and one of the LED illuminants is switched and lit separately to achieve different light spot effects, the collimating lens cannot be aligned with the optical center of each LED illuminant, the utilization rate of the collimating lens is low, the light output effect is poor, and the light output efficiency is low. Therefore, the LED light source module of the prior art cannot take into account both achieving different light spot effects and maintaining a high light output efficiency. Utility Model Content

[0003] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a dimming mechanism and a light source device for solving the problem that the existing LED light source cannot achieve different light spot effects and maintain high light output efficiency at the same time, and the dimming mechanism and the light source system are small in size and have good stability.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A dimming mechanism is arranged on a substrate, comprising:

[0006] A collimating lens assembly, comprising a lens holder and a collimating lens mounted on the lens holder;

[0007] A mounting bracket assembly is disposed on the substrate and is rotationally connected to the lens bracket via a deflection connection assembly;

[0008] A deflection connection assembly is rotatably connected to both the mounting bracket assembly and the lens bracket, and the rotation shaft of the deflection connection assembly rotatably connected to the mounting bracket assembly and the rotation shaft of the lens bracket rotatably connected are non-coaxially arranged;

[0009] The driving assembly is used to drive the deflection connection assembly to make the lens bracket rotate eccentrically.

[0010] In one embodiment, the deflection connection assembly includes a deflection connection member having a first rotating shaft and a second rotating shaft, wherein the first rotating shaft is rotatably connected to the mounting bracket assembly via a first bearing, and the second rotating shaft is rotatably connected to the lens bracket via a second bearing; wherein the first rotating shaft and the second rotating shaft are non-coaxially arranged.

[0011] In one of the embodiments, it also includes a positioning member that cooperates with the mounting bracket assembly and is used to position the rotational position of the lens bracket; the second rotating shaft is rotatably connected to the positioning member through a second bearing, and the positioning member is connected to the lens bracket.

[0012] In one embodiment, the positioning member is provided with a bearing hole for accommodating a second bearing, and a first abutting surface for abutting against the mounting bracket assembly for positioning; the mounting bracket assembly is provided with a second abutting surface that cooperates with the first abutting surface.

[0013] In one embodiment, the first abutting surface is a plane; and / or the second abutting surface is a plane.

[0014] In one embodiment, the driving assembly is a solenoid valve assembly, and the iron core of the solenoid valve assembly is connected to the deflection connection assembly.

[0015] In one embodiment, there are two mounting bracket assemblies, the two mounting bracket assemblies are arranged at two opposite sides of the lens bracket, and the deflection connection assembly and the driving assembly are respectively arranged in one-to-one correspondence with the two mounting bracket assemblies.

[0016] In one embodiment, the deflection connecting member includes a connecting member bracket, and a driving connecting portion arranged on the connecting member bracket, and the driving connecting portion is connected to the driving assembly; and the first rotating shaft is arranged on the first side of the connecting member bracket, and the second rotating shaft and the driving connecting portion are both arranged on the second side of the connecting member bracket; wherein the second side of the connecting member bracket is the side opposite to the first side of the connecting member bracket.

[0017] In one embodiment, a first internal thread is disposed inside the first rotating shaft; and / or a second internal thread is disposed inside the second rotating shaft.

[0018] The present technical solution also provides a light source device, including a light source assembly, and a dimming mechanism, a light homogenizing mechanism and a converging mechanism arranged in sequence along the light emitting direction of the light source assembly; wherein the dimming mechanism is a dimming mechanism as described in any one of the above items; the light source assembly includes a substrate and a plurality of light-emitting body groups arranged on the substrate, the light-emitting body groups include two light-emitting bodies with different light effects, the two different light-emitting bodies are arranged in a common arc, and the arc radius r of the common arc is the same as the axis spacing L between the first rotating shaft and the second rotating shaft, and the driving assembly drives the deflection connection assembly so that the collimating lens on the lens bracket can be aligned with different light-emitting bodies.

[0019] Compared with the prior art, the beneficial effects of the present invention include at least:

[0020] The dimming mechanism of the present technical solution can be used in conjunction with a light source assembly provided with different luminous bodies. The collimating lens assembly and the mounting bracket assembly of the present technical solution are rotationally connected through a deflection connection assembly, and the rotating shaft of the deflection connection assembly rotationally connected to the mounting bracket assembly and the rotating shaft rotationally connected to the lens bracket are non-coaxially arranged, so that when the driving assembly drives the deflection connection assembly to rotate, the lens bracket can rotate eccentrically, so that the collimating lens on the lens bracket can rotate relative to the light source assembly provided with different luminous bodies, so that the collimating lens can collimate and collect light at different luminous bodies, thereby achieving different light spot effects. The present technical solution can achieve different light-emitting effects without replacing the light source assembly, and the switching speed and response speed of different light effect modes are fast, and the switching is convenient; at the same time, by adjusting the relative position relationship between the luminous body and the collimating lens, the collimating lens is always aligned with the optical center of the luminous body that needs to emit light for the best light collection, thereby ensuring the light emission efficiency. In addition, the present technical solution drives the lens bracket to rotate through an eccentric rotation driving mode so as to move relative to the light source assembly. Compared with other driving modes, its movement is more stable and the overall structure is smaller.

[0021] The light source device of the present technical solution includes a light source assembly, and the light-emitting body group on the light source assembly includes two light-emitting bodies with different light effects. The two different light-emitting bodies are arranged in a common arc, and the arc radius r of the common arc is the same as the axial spacing L between the first rotating shaft and the second rotating shaft, so that when the driving assembly drives the deflection connection assembly to rotate, the lens bracket rotates eccentrically, and the collimating lens on the lens bracket can align different light-emitting bodies to collimate and collect light, thereby achieving different light-emitting effects. The present technical solution can achieve different light-emitting effects without replacing the light source assembly, and the switching speed and response speed of different light effect modes are fast, and the switching is convenient; at the same time, by adjusting the relative position relationship between the light-emitting body and the collimating lens, the collimating lens is always aligned with the optical center of the light-emitting body that needs to emit light for the best light collection, and the optical expansion amount is almost lossless, thereby ensuring the light-emitting efficiency. In addition, the present technical solution drives the lens bracket to rotate through an eccentric rotation driving mode to move relative to the light source assembly. Compared with other driving modes, its movement is smoother and the overall structure is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the dimming mechanism described in the embodiment of the utility model is shown in FIG. Figure 1 .

[0023] Figure 2 The structure of the dimming mechanism described in the embodiment of the utility model is shown in FIG. Figure 2 .

[0024] Figure 3 It is an exploded view of the dimming mechanism described in the embodiment of the utility model.

[0025] Figure 4 The structure of the deflection connecting member described in the embodiment of the utility model is schematically shown. Figure 1 .

[0026] Figure 5 The structure of the deflection connecting member described in the embodiment of the utility model is schematically shown. Figure 2 .

[0027] Figure 6 This is a schematic structural diagram of a positioning member according to an embodiment of the utility model.

[0028] Figure 7 It is a structural schematic diagram of the mounting bracket assembly described in an embodiment of the utility model.

[0029] Figure 8 It is an exploded view of the light source device according to an embodiment of the present utility model.

[0030] Fig. 9 It is a structural schematic diagram of a light source assembly according to an embodiment of the utility model.

[0031] Fig.10 It is a structural schematic diagram of the light-emitting body group described in an embodiment of the utility model.

[0032] Fig.11 It is a schematic structural diagram of the light-emitting body group described in other embodiments of the utility model.

[0033] Fig.12 This is a schematic diagram of the initial state of the dimming mechanism described in the embodiment of the utility model.

[0034] Fig.13 The following is a schematic diagram of the use of the dimming mechanism described in the embodiment of the utility model. Figure 1 .

[0035] Fig.14 The following is a schematic diagram of the use of the dimming mechanism described in the embodiment of the utility model. Figure 2 .

[0036] : Reference numerals: 100, dimming mechanism; 10, collimating lens assembly; 11, lens bracket; 12, collimating lens; 13, positioning member; 131, first abutting surface; 20, mounting bracket assembly; 21, second abutting surface; 30, deflection connection assembly; 31, deflection connection member; 311, first rotating shaft; 312, second rotating shaft; 313, first bearing; 314, second bearing; 315, connection member bracket; 316, driving connection part; 40, driving assembly; 200, substrate; 300, light source assembly; 310, light-emitting body group; 400, light uniforming mechanism; 410, compound eye bracket; 420, first compound eye lens; 430, second compound eye lens; 500, convergence mechanism. DETAILED DESCRIPTION

[0037] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0038] like Figure 1-Figure 3 A dimming mechanism 100 is shown, which is disposed on a substrate 200 and includes:

[0039] The collimating lens assembly 10 comprises a lens holder 11 and a collimating lens 12 mounted on the lens holder 11;

[0040] The mounting bracket assembly 20 is disposed on the substrate 200 and is rotatably connected to the lens bracket 11 via a deflection connection assembly 30;

[0041] The deflection connection assembly 30 is rotatably connected to the mounting bracket assembly 20 and the lens bracket 11, and the rotation axis of the deflection connection assembly 30 rotatably connected to the mounting bracket assembly 20 and the rotation axis rotatably connected to the lens bracket 11 are non-coaxially arranged;

[0042] The driving assembly 40 is used to drive the deflection connection assembly 30 to make the lens holder 11 rotate eccentrically.

[0043] The dimming mechanism 100 of the present embodiment can be used in conjunction with a light source assembly 300 provided with different light-emitting bodies. The collimating lens assembly 10 and the mounting bracket assembly 20 of the present embodiment are rotationally connected via a deflection connection assembly 30, and the rotating shaft of the deflection connection assembly 30 rotationally connected to the mounting bracket assembly 20 and the rotating shaft rotationally connected to the lens bracket 11 are non-coaxially arranged, so that when the driving assembly 40 drives the deflection connection assembly 30 to rotate, the lens bracket 11 can rotate eccentrically relative to the mounting bracket assembly 20 (that is, the lens bracket 11 can rotate around the rotating shaft rotationally connected to the mounting bracket assembly 20), so that the collimating lens 12 on the lens bracket 11 can rotate relative to the light source assembly 300 provided with different light-emitting bodies, so that the collimating lens 12 can be aligned with different light-emitting bodies to collimate and collect light, thereby achieving different light-emitting effects. This embodiment can achieve different light-emitting effects without replacing the light source assembly 300, and the switching speed and response speed of different light effect modes are fast, and the switching is convenient; at the same time, by adjusting the relative position relationship between the light emitter and the collimating lens 12, the collimating lens 12 is always aligned with the optical center of the light emitter that needs to emit light for optimal light collection, thereby ensuring the light-emitting efficiency. In addition, this technical solution drives the lens bracket to rotate through an eccentric rotation driving mode to move relative to the light source assembly. Compared with other driving modes, its movement is more stable and the overall structure is smaller.

[0044] like Figure 3-Figure 4 As shown, the deflection connection assembly 30 of this embodiment includes a deflection connection member 31 provided with a first rotation axis 311 and a second rotation axis 312, wherein the first rotation axis 311 is rotationally connected to the mounting bracket assembly 20 via a first bearing 313, and the second rotation axis 312 is rotationally connected to the lens bracket 11 via a second bearing 314; wherein the first rotation axis 311 and the second rotation axis 312 are non-coaxially arranged. Since the mounting bracket assembly 20 is arranged on the substrate 200, and the first rotation axis 311 is rotationally connected to the mounting bracket assembly 20, when the driving assembly 40 drives the deflection connection member 31 to rotate, the second rotation axis 312 rotates around the first rotation axis 311, driving the lens bracket 11 to rotate eccentrically around the first rotation axis 311, thereby enabling the collimating lens 12 to align with different light sources.

[0045] In this embodiment, there are two mounting bracket assemblies 20, which are arranged at two opposite sides of the lens bracket 11, and the deflection connection assembly 30 and the driving assembly 40 are respectively arranged in one-to-one correspondence with the two mounting bracket assemblies 20. By arranging the driving assembly 40 at two opposite sides, the movement of the lens bracket 11 is more stable and smooth, and no tilt occurs, thereby improving the light extraction efficiency.

[0046] This embodiment also includes a positioning member 13 that cooperates with the mounting bracket assembly 20 and is used to position the rotation position of the lens bracket 11; the second rotating shaft 312 is rotatably connected to the positioning member 13 through the second bearing 314, and the positioning member 13 is connected to the lens bracket 11. That is, the second rotating shaft 312 is connected to the lens bracket 11 through the positioning member 13, and the positioning member 13 is provided with a bearing hole for installing the second bearing 314. Through this arrangement, the positioning member 13 can rotate around the first rotating shaft 311, and when the collimating lens 12 is aligned with a certain light source, the positioning member 13 can position the current position to prevent the lens bracket 11 from shaking or offsetting, thereby ensuring the light output effect.

[0047] In this embodiment, the positioning member 13 and the lens holder 11 are separately provided. In other embodiments, the positioning member 13 and the lens holder 11 may also be integrally formed.

[0048] like Figure 6-Figure 7 As shown, the positioning member 13 of this embodiment is provided with a first abutting surface 131 for abutting against the mounting bracket assembly 20 for positioning; the mounting bracket assembly 20 is provided with a second abutting surface 21 that matches the first abutting surface 131. When the collimating lens 12 is aligned with a certain light source, the first abutting surface 131 abuts against the second abutting surface 21, so that the positioning member 13 no longer rotates, and thus the lens bracket 11 no longer rotates, and the collimating lens 12 remains aligned with the optical center of the light source.

[0049] Since the number of the mounting bracket assembly 20, the deflection connection assembly 30 and the driving assembly 40 in this embodiment is two, and they are respectively arranged on two opposite sides of the lens bracket 11, this embodiment is designed so that when the collimating lens 12 is aligned with one of the light emitters, the first abutting surface 131 on one side abuts against the second abutting surface 21 to achieve positioning. Figure 2 Taking the example shown, when the collimating lens 12 is aligned with the light-emitting body on the left, the first abutting surface 131 of the positioning member 13 on the left abuts against the second abutting surface 21 of the mounting bracket assembly 20 on the left; similarly, when the collimating lens 12 is aligned with the light-emitting body on the right, the first abutting surface 131 of the positioning member 13 on the right abuts against the second abutting surface 21 of the mounting bracket assembly 20 on the right.

[0050] For ease of processing, in this embodiment, the first abutting surface 131 and the second abutting surface 21 are both planes. In other embodiments, the first abutting surface 131 and / or the second abutting surface 21 can also be designed as a curved surface, as long as the collimating lens 12 can be aligned with the light source when the first abutting surface 131 and the second abutting surface 21 abut, that is, the optical axis can coincide with the optical center of the light source.

[0051] In this embodiment, the driving assembly 40 is a solenoid valve assembly, and the iron core of the solenoid valve assembly is connected to the deflection connection assembly 30. Compared with other driving modes, the solenoid valve assembly is simple to operate and switches quickly, and the spring of the solenoid valve assembly can also play a buffering and protective role for the alignment assembly during product transportation. In other embodiments, a stepper motor or other driving components can also be used as the driving assembly 40.

[0052] like Figure 4-Figure 5 As shown, the deflection connecting member 31 in this embodiment includes a connecting member bracket 315, and a driving connecting part 316 arranged on the connecting member bracket 315, and the driving connecting part 316 is connected to the driving component 40. Specifically, the driving connecting part 316 is arranged in a columnar shape, and the driving connecting part 316 is clamped with the iron core of the solenoid valve.

[0053] The first rotating shaft 311 is arranged on the first side of the connector bracket 315, and the second rotating shaft 312 and the driving connecting part 316 are arranged on the second side of the connector bracket 315; wherein the second side of the connector bracket 315 is the side opposite to the first side of the connector bracket 315. The advantage of such an arrangement is that the volume of the connecting component can be made smaller. Furthermore, it is preferred that the second rotating shaft is arranged between the first rotating shaft and the driving connecting part. Under the condition that the connectors have the same length, the driving component can drive the connecting component to rotate with a larger torque, and the driving force is stronger.

[0054] In this embodiment, the first rotating shaft 311 is provided with a first internal thread, specifically, the first internal thread is provided at the top position of the first rotating shaft 311, so that the first bearing 313 can be installed on the first rotating shaft 311 by bolts; similarly, the second rotating shaft 312 is provided with a second internal thread, and the second internal thread is provided at the top position of the second rotating shaft 312.

[0055] like Figure 8As shown, this embodiment also provides a light source device, including a light source assembly 300, and a dimming mechanism 100, a uniform light mechanism 400 and a convergence mechanism 500 arranged in sequence along the light emitting direction of the light source assembly 300; wherein the dimming mechanism 100 is the dimming mechanism 100 as described above; the light source assembly 300 includes a substrate 200 and a plurality of light-emitting body groups 310 arranged on the substrate 200, the light-emitting body groups 310 include two light-emitting bodies with different light effects, the two different light-emitting bodies are arranged in a common arc, and the arc radius r of the common arc is the same as the axial spacing L between the first rotating shaft 311 and the second rotating shaft 312, and the driving assembly 40 drives the deflection connection assembly 30 so that the collimating lens 12 on the lens bracket 11 can be aligned with different light-emitting bodies.

[0056] The light homogenizing mechanism 400 described in this embodiment is used to homogenize the light after being collimated by the collimating lens assembly 10 and project it to the converging mechanism 500, and the converging mechanism 500 is used to converge the homogenized light and emit it.

[0057] The light homogenizing mechanism 400 described in this embodiment may be a fly-eye lens group, that is, it includes a fly-eye bracket 410, and a first fly-eye lens 420 and a second fly-eye lens 430 disposed on the fly-eye bracket 410 and arranged in sequence along the light path direction.

[0058] like Figure 8-Figure 10 Combination Figure 5 As shown, the light source device of this embodiment includes a light source assembly 300, and the light-emitting body group 310 on the light source assembly 300 includes two light-emitting bodies with different light effects. The two different light-emitting bodies are arranged in a common arc, and the arc radius r of the common arc is the same as the axial spacing L between the first rotating shaft 311 and the second rotating shaft 312, so that when the driving assembly 40 drives the deflection connection assembly 30 to rotate, the lens bracket 11 rotates eccentrically, and the collimating lens 12 on the lens bracket 11 can align with different light-emitting bodies to collimate and collect light, thereby achieving different light-emitting effects. This embodiment can achieve different light spot effects without replacing the light source assembly 300, and the switching speed and response speed of different light effect modes are fast, and the switching is convenient; at the same time, by adjusting the relative position relationship between the light-emitting body and the collimating lens 12, the collimating lens 12 is always aligned with the optical center of the light-emitting body that needs to emit light for optimal light collection, and the optical extension is almost lossless, ensuring the light-emitting efficiency. In addition, the present technical solution drives the lens bracket to rotate and move relative to the light source assembly through an eccentric rotation driving mode. Compared with other driving modes, its movement is more stable and the overall structure is smaller. The different light effects described in this application can be different color temperatures, different display indexes, different colors, different spot sizes, different spot shapes or different beam effects, etc. As long as the optical parameters or optical effects of the light emitted by the luminous body are different, they can be identified as different light effects.

[0059] like Fig.10 As shown, this embodiment is described by taking the example that the arc length of the common arc of two different light-emitting bodies is less than the semicircle of the circle where the common arc is located. In other embodiments, the arc length of the common arc of two different light-emitting bodies can be set to be equal to the semicircle of the circle where the common arc is located, that is, the line connecting the optical centers of the two different light-emitting bodies is the diameter of the circle where the common arc is located, such as Fig.11 shown.

[0060] like Fig.12 As shown, in the initial state, the collimating lens 12 of the collimating lens assembly 10 is aligned with the middle position of the two light sources. Fig.13 As shown, when the collimating lens 12 of the collimating lens assembly 10 needs to be aligned with the light source on the left, the iron core of the solenoid valve on the left is energized and retracted, and the solenoid valve on the right is de-energized, and its iron core passively extends outward, so that the first abutting surface 131 of the positioning member 13 on the left abuts against the second abutting surface 21 of the mounting bracket assembly 20 on the left. Fig.14 As shown, when the collimating lens 12 of the collimating lens assembly 10 needs to be aligned with the light-emitting body located on the right, the iron core of the solenoid valve located on the right is energized and contracted, and the solenoid valve located on the left is de-energized, and its iron core passively extends outward, so that the first abutting surface 131 of the positioning member 13 located on the right abuts against the second abutting surface 21 of the mounting bracket assembly 20 located on the right.

[0061] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A dimming mechanism, arranged on a substrate, characterized in that: include: A collimating lens assembly, comprising a lens holder and a collimating lens mounted on the lens holder; A mounting bracket assembly is disposed on the substrate and is rotationally connected to the lens bracket via a deflection connection assembly; A deflection connection assembly is rotatably connected to both the mounting bracket assembly and the lens bracket, and the rotation shaft of the deflection connection assembly rotatably connected to the mounting bracket assembly and the rotation shaft of the lens bracket rotatably connected are non-coaxially arranged; The driving assembly is used to drive the deflection connection assembly to make the lens bracket rotate eccentrically.

2. The dimming mechanism according to claim 1, characterized in that: The deflection connection assembly includes a deflection connection member having a first rotating shaft and a second rotating shaft, wherein the first rotating shaft is rotatably connected to the mounting bracket assembly via a first bearing, and the second rotating shaft is rotatably connected to the lens bracket assembly via a second bearing; wherein the first rotating shaft and the second rotating shaft are non-coaxially arranged.

3. The dimming mechanism according to claim 2, characterized in that: It also includes a positioning member that cooperates with the mounting bracket assembly and is used to position the rotation position of the lens bracket; the second rotating shaft is rotatably connected to the positioning member through a second bearing, and the positioning member is connected to the lens bracket.

4. The dimming mechanism according to claim 3, characterized in that: The positioning member is provided with a bearing hole for accommodating a second bearing, and a first abutting surface for abutting against the mounting bracket assembly for positioning; the mounting bracket assembly is provided with a second abutting surface that matches the first abutting surface.

5. The dimming mechanism according to claim 4, characterized in that: The first abutting surface is a plane; and / or the second abutting surface is a plane.

6. The dimming mechanism according to claim 1, characterized in that: The driving component is a solenoid valve component, and the iron core of the solenoid valve component is connected to the deflection connection component.

7. The dimming mechanism according to claim 1, characterized in that: The number of the mounting bracket assemblies is two, and the two mounting bracket assemblies are arranged at two opposite sides of the lens bracket, and the deflection connection assembly and the driving assembly are respectively arranged in a one-to-one correspondence with the two mounting bracket assemblies.

8. The dimming mechanism according to any one of claims 2 to 5, characterized in that: The deflection connecting member includes a connecting member bracket, and a driving connecting portion arranged on the connecting member bracket, and the driving connecting portion is connected to the driving assembly; and the first rotating shaft is arranged on the first side of the connecting member bracket, and the second rotating shaft and the driving connecting portion are both arranged on the second side of the connecting member bracket; wherein the second side of the connecting member bracket is the side opposite to the first side of the connecting member bracket.

9. The dimming mechanism according to any one of claims 2 to 5, characterized in that: The first rotating shaft has a first internal thread disposed inside; and / or the second rotating shaft has a second internal thread disposed inside.

10. A light source device, characterized in that: It includes a light source assembly, and a dimming mechanism, a light homogenizing mechanism and a converging mechanism arranged in sequence along the light emitting direction of the light source assembly; wherein the dimming mechanism is the dimming mechanism as described in any one of claims 1 to 7; the light source assembly includes a substrate and a plurality of light-emitting body groups arranged on the substrate, the light-emitting body groups include two light-emitting bodies with different light effects, the two different light-emitting bodies are arranged in a common arc, and the arc radius r of the common arc is the same as the axis spacing L between the first rotating shaft and the second rotating shaft, and the driving assembly drives the deflection connection assembly so that the collimating lens on the lens bracket can be aligned with different light-emitting bodies.

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