An off-axis reflective collimator and its alignment device

Abstract

The utility model discloses a kind of off-axis reflection type collimator's mounting and adjusting device, including Y-axis rotation adjusting component, Y-axis rotation adjusting component below is provided with Y-Z direction two-dimensional adjusting component, Y-axis rotation adjusting component is detachably connected with off-axis parabolic reflector, the front side of Y-axis rotation adjusting component is provided with collimator sinking and leaning tool, the rear of collimator sinking and leaning tool is provided with X direction one-dimensional adjusting component, the front side of collimator sinking and leaning tool is provided with X-Z direction two-dimensional adjusting component, optical fiber is provided on X-Z direction two-dimensional adjusting component, and optical fiber connector is detachably connected on optical fiber.The utility model provides mounting and adjusting device, in collimator assembly process, it can meet off-axis parabolic reflector along Y-axis direction rotation adjustment, Y direction and Z direction movement adjustment, collimator lens barrel along X direction movement adjustment, optical fiber connector along X axis and Z axis direction movement adjustment, realize the function of three elements simultaneous adjustment, can greatly improve the mounting and adjusting efficiency of reflection type collimator.

Description

Technical Field

[0001] This utility model relates to an assembly and adjustment device for an off-axis reflective collimator. Background Technology

[0002] The reflective collimator is precisely positioned and packaged from an off-axis parabolic mirror. Compared to lenses, using an off-axis parabolic mirror eliminates spherical aberration and chromatic aberration, and does not introduce phase delay or absorption loss, making it ideal for femtosecond pulsed lasers.

[0003] However, to achieve a collimated beam with an ideal divergence angle, the focal point of the off-axis parabolic mirror must be precisely aligned with the laser's output point during assembly and adjustment. Any slight positional shift or rotation angle will cause the collimated beam to deviate. Traditional transmission-type collimator assembly and testing devices can only perform one-dimensional adjustment and are not suitable for the multi-dimensional adjustment of reflection-type collimators. Utility Model Content

[0004] The main purpose of this invention is to provide an assembly and adjustment device for an off-axis reflective collimator to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution: An off-axis reflective collimator assembly and adjustment device includes a Y-axis rotation adjustment assembly, a YZ-direction two-dimensional adjustment assembly disposed below the Y-axis rotation adjustment assembly, the Y-axis rotation adjustment assembly being detachably connected to an off-axis parabolic reflector, a collimator mounting fixture disposed on the front side of the Y-axis rotation adjustment assembly, a collimator tube placed on the collimator mounting fixture, an optical fiber connector connecting cylinder communicating with the front side wall of the collimator tube, an X-direction one-dimensional adjustment assembly disposed behind the collimator mounting fixture, an XZ-direction two-dimensional adjustment assembly disposed on the front side of the collimator mounting fixture, an optical fiber disposed on the XZ-direction two-dimensional adjustment assembly, and an optical fiber connector detachably connected to the optical fiber.

[0006] Preferably, the Y-axis rotation adjustment assembly includes a mounting plate, a turntable is disposed within the mounting plate, and a fixing head is disposed on the turntable.

[0007] Preferably, the mounting plate is fixed on the two-dimensional adjustment component in the YZ direction, and the fixing head is detachably connected to the off-axis parabolic reflector.

[0008] Preferably, the fixing head is provided with a groove for inserting one end of the off-axis parabolic reflector, and the groove is provided with a threaded hole through which it passes.

[0009] Preferably, a lens barrel fixing assembly is provided on the rear side of the collimator resting against the tooling.

[0010] Preferably, the lens barrel fixing assembly includes a fixing frame, a fixing bolt is threaded to the front end of the fixing frame, a fixing block is rotatably connected to the lower part of the fixing bolt, and an elastic element is provided between the top surface of the fixing block and the bottom surface of the fixing frame around the fixing bolt.

[0011] Preferably, the collimator mounting fixture has a stepped structure, with the collimator lens barrel and the fiber optic connector connecting barrel respectively resting on different steps.

[0012] The beneficial technical effects of this utility model are as follows: The assembly and adjustment device provided by this utility model can simultaneously adjust the off-axis parabolic mirror by rotation along the Y-axis and by movement along the Y and Z axes, the collimator tube by movement along the X-axis, and the fiber optic connector by movement along the X and Z axes during the collimator assembly process, achieving simultaneous adjustment of three components. This assembly and adjustment device is highly precise and practical, significantly improving the assembly and adjustment efficiency of reflective collimators, meeting both laboratory assembly and adjustment applications and the high-efficiency requirements of mass production assembly and adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembly and adjustment device structure according to an embodiment of the present utility model; Figure 2 This is a front view of the right side of the assembly and adjustment device according to an embodiment of the present invention; Figure 3 This is a front view of the assembly and adjustment device according to an embodiment of the present invention; Figure 4 This is a top front view of the assembly and adjustment device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the Y-axis rotation adjustment component structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the off-axis parabolic reflector and fixed head structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the collimator backing fixture and lens barrel fixing assembly according to an embodiment of the present invention; Figure 8 This is an exploded view of the off-axis reflective collimator structure according to an embodiment of the present invention.

[0014] In the diagram: 1. Y-axis rotation adjustment assembly; 2. YZ direction two-dimensional adjustment assembly; 3. Off-axis parabolic reflector; 4. Collimator mounting fixture; 5. Collimator tube; 6. Fiber optic connector connecting tube; 7. X direction one-dimensional adjustment assembly; 8. XZ direction two-dimensional adjustment assembly; 9. Fiber optic cable; 10. Fiber optic connector; 11. Mounting plate; 12. Turntable; 13. Fixing head; 14. Groove; 15. Threaded hole; 16. Tube fixing assembly; 17. Fixing bracket; 18. Fixing bolt; 19. Fixing pressure block; 20. Elastic element. Detailed Implementation

[0015] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0016] like Figures 1-8 As shown, an off-axis reflective collimator assembly and adjustment device includes a Y-axis rotation adjustment component 1, a YZ direction two-dimensional adjustment component 2 disposed below the Y-axis rotation adjustment component 1, the Y-axis rotation adjustment component 1 being detachably connected to an off-axis parabolic reflector 3, a collimator mounting fixture 4 disposed on the front side of the Y-axis rotation adjustment component 1, a collimator tube 5 placed on the collimator mounting fixture 4, an optical fiber connector connecting tube 6 communicating with the front side wall of the collimator tube 5, an X-direction one-dimensional adjustment component 7 disposed behind the collimator mounting fixture 4, an XZ direction two-dimensional adjustment component 8 disposed on the front side of the collimator mounting fixture 4, an optical fiber 9 disposed on the XZ direction two-dimensional adjustment component 8, and an optical fiber connector 10 detachably connected to the optical fiber 9.

[0017] In this application, the XYZ directions are defined according to the attached drawings. The X direction refers to the height direction, the Y direction refers to the left and right direction, and the Z direction refers to the front and back direction.

[0018] The two-dimensional adjustment component 2 in the YZ direction, the one-dimensional adjustment component 7 in the X direction, and the two-dimensional adjustment component 8 in the XY direction all use standard parts. Therefore, only their positions are shown in the attached drawings; please refer to the following for the specific structure: The standard part used in the YZ direction two-dimensional adjustment component 2 is model number: YZ two-dimensional Soleb LX20; The standard part used in the X-direction one-dimensional adjustment component 7 is model number: X-direction one-dimensional adjustment Soleb LX10; The standard part used in the XY direction two-dimensional adjustment component 8 is model number: XZ direction Soleb LX20YZ.

[0019] A light spot receiving device is installed after the light exit port of the collimator tube 5. Then, the off-axis reflective collimator is assembled and adjusted. The specific assembly and adjustment process is as follows: (1) Fix the off-axis parabolic reflector 3 to the Y-axis rotation adjustment assembly 1 with bolts; (2) Place the collimator tube 5 on the collimator sinking fixture 4, so that the fiber optic connector tube 6 is in the Z direction. Then adjust the X-direction one-dimensional adjustment component 7 to adjust the height of the collimator tube 5. Adjust the Z direction of the off-axis parabolic mirror 3 by the YZ-direction two-dimensional adjustment component 2 so that the off-axis parabolic mirror 3 and the collimator tube 5 are coaxially set along the Y direction, so that the off-axis parabolic mirror 3 can be inserted into the collimator tube 5, and the adjustment of the off-axis parabolic mirror 3 in the Z direction is completed. Then use the tube fixing component 16 to fix the position of the collimator tube 5, and complete the position adjustment of the collimator tube 5. (3) Adjust the angle of the off-axis parabolic reflector 3 by the Y-axis rotation adjustment component 1 to make the ellipticity of the light spot the best, and then adjust the position of the off-axis parabolic reflector 3 in the Y direction by the YZ direction two-dimensional adjustment component 2 to make the light spot centered on the detector. (4) Adjust the position of the optical fiber 9 and the optical fiber connector 10 in the Y direction by using the two-dimensional adjustment component 8 in the XZ direction so that the optical fiber 9 and the optical fiber connector 10 can be coaxially set with the optical fiber connector connecting cylinder 6 in the Z direction. Then adjust the position of the optical fiber 9 and the optical fiber connector 10 in the Z direction by using the two-dimensional adjustment component 8 in the XZ direction so that the optical fiber connector 10 can be inserted into the optical fiber connector connecting cylinder 6. Adjust the position of the optical fiber connector 10 in the Z direction in the optical fiber connector connecting cylinder 6 to minimize the light spot radius. At this time, it is the optimal working distance from the optical fiber emitted light to the off-axis parabolic reflector 3, thus completing the beam collimation adjustment.

[0020] After all adjustments are completed, fix the off-axis parabolic reflector 3 to the collimator tube 5, fix the fiber optic connector 10 to the fiber optic connector connecting cylinder 6, remove the fiber optic 9 from the fiber optic connector 10, loosen the tube fixing assembly 16, remove the off-axis parabolic reflector 3 from the Y-axis rotation adjustment assembly 1, and remove the off-axis parabolic reflector 3, collimator tube 5, fiber optic connector connecting cylinder 6 and fiber optic connector 10 together from the collimator sink fixture 4 to complete the assembly and adjustment of the off-axis reflective collimator.

[0021] In this embodiment, as Figure 5 As shown, the Y-axis rotation adjustment assembly 1 includes a mounting plate 11, a turntable 12 disposed within the mounting plate 11, and a fixing head 13 disposed on the turntable 12. The fixing head 13 is fixedly connected to the turntable 12 by bolts. The turntable 12 uses a standard part, model Newport RSP-1T, has an adjustment scale, and is self-locking.

[0022] In this embodiment, as Figure 5 and Figure 6As shown, the mounting plate 11 is fixed on the two-dimensional adjustment component 2 in the YZ direction, and the fixing head 13 is fixedly connected to the off-axis parabolic reflector 3. The fixing head 13 is provided with a groove 14 for inserting one end of the off-axis parabolic reflector 3, and a threaded hole 15 is provided in the groove 14 for passing through it.

[0023] The off-axis parabolic reflector 3 has a threaded connection hole on its back corresponding to the position of the threaded hole 15. A bolt is screwed into the threaded hole 15 from the outer bottom of the groove 14 until it is screwed into the threaded connection hole of the off-axis parabolic reflector 3, thus fixing the off-axis parabolic reflector 3.

[0024] When disassembling the off-axis parabolic reflector 3, simply unscrew the bolts from the bottom surface of the groove 14.

[0025] In this embodiment, as Figure 1 As shown, a lens barrel fixing assembly 16 is provided on the rear side of the collimator resting against the fixture 4. After the position of the collimator lens barrel 5 is adjusted, the lens barrel fixing assembly 16 is used to fix it to prevent movement.

[0026] In this embodiment, as Figure 7 As shown, the lens barrel fixing assembly 16 includes a fixing frame 17. A fixing bolt 18 is threadedly connected to the front end of the fixing frame 17. A fixing block 19 is rotatably connected below the fixing bolt 18. An elastic element 20 is provided between the top surface of the fixing block 19 and the bottom surface of the fixing frame 17, around the fixing bolt 18. Rotating the fixing bolt 18 downwards will press the fixing block 19 onto the collimator lens barrel 5, preventing the collimator lens barrel 5 from moving. The two ends of the elastic element 20 are respectively fixed to the bottom surface of the fixing block 19 and the bottom surface of the fixing frame 17, preventing the fixing block 19 from rotating with the fixing bolt 18. The elastic element 20 uses a stretchable part, such as a spring.

[0027] In this embodiment, as Figure 1 As shown, the collimator mounting fixture 4 has a stepped structure, with the collimator lens tube 5 and the fiber optic connector connecting tube 6 resting on different steps. This provides corresponding placement surfaces for components of different diameters, resulting in more stable placement.

[0028] In summary, the assembly and adjustment device provided in this embodiment can simultaneously adjust the off-axis parabolic mirror 3 by rotation along the Y-axis and by movement along the Y and Z axes, the collimator tube 5 by movement along the X-axis, and the fiber optic connector 10 by movement along the X and Z axes during the collimator assembly process, achieving simultaneous adjustment of all three components. This assembly and adjustment device is highly accurate and practical, significantly improving the assembly and adjustment efficiency of reflective collimators, meeting both laboratory assembly and adjustment applications and the high-efficiency requirements of mass production assembly and adjustment.

[0029] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An adjustment device for an off-axis reflective collimator, characterized in that: The device includes a Y-axis rotation adjustment assembly (1), a YZ direction two-dimensional adjustment assembly (2) is provided below the Y-axis rotation adjustment assembly (1), the Y-axis rotation adjustment assembly (1) is detachably connected to an off-axis parabolic reflector (3), a collimator mounting fixture (4) is provided on the front side of the Y-axis rotation adjustment assembly (1), a collimator tube (5) is placed on the collimator mounting fixture (4), an optical fiber connector connecting tube (6) is provided on the front side wall of the collimator tube (5), an X direction one-dimensional adjustment assembly (7) is provided behind the collimator mounting fixture (4), an XZ direction two-dimensional adjustment assembly (8) is provided on the front side of the collimator mounting fixture (4), an optical fiber (9) is provided on the XZ direction two-dimensional adjustment assembly (8), and an optical fiber connector (10) is detachably connected to the optical fiber (9).

2. The mounting and adjusting device for an off-axis reflective collimator according to claim 1, characterized in that: The Y-axis rotation adjustment assembly (1) includes a mounting plate (11), a turntable (12) is provided inside the mounting plate (11), and a fixing head (13) is provided on the turntable (12).

3. The mounting and adjusting device for an off-axis reflective collimator according to claim 2, characterized in that: The mounting plate (11) is fixed on the two-dimensional adjustment component (2) in the YZ direction, and the fixing head (13) is detachably connected to the off-axis parabolic reflector (3).

4. The mounting and adjusting device for an off-axis reflective collimator according to claim 3, characterized in that: The fixing head (13) is provided with a groove (14) for inserting one end of the off-axis parabolic reflector (3), and a threaded hole (15) is provided in the groove (14) for passing through it.

5. The mounting and adjusting device for an off-axis reflective collimator according to claim 1, characterized in that: The collimator resting fixture (4) is provided with a lens barrel fixing assembly (16) on the rear side.

6. The mounting and adjusting device for an off-axis reflective collimator according to claim 5, characterized in that: The lens barrel fixing assembly (16) includes a fixing frame (17), the front end of the fixing frame (17) is threaded with a fixing bolt (18), a fixing block (19) is rotatably connected below the fixing bolt (18), and an elastic element (20) is provided between the top surface of the fixing block (19) and the bottom surface of the fixing frame (17) around the fixing bolt (18).

7. The mounting and adjusting device for an off-axis reflective collimator according to claim 1, characterized in that: The collimator mounting fixture (4) has a stepped structure, and the collimator lens tube (5) and the fiber optic connector tube (6) are respectively mounted on different steps.

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