An optical device position adjustment device

Abstract

The present invention aims to provide an optical device position adjustment device with a simple structure, high adjustment precision, capable of realizing online fine adjustment, thereby improving the adjustment efficiency. The present invention includes a lens barrel, a first spring, a retaining ring, a carrier, and an XY-axis fine adjustment module. The carrier is arranged on the XY-axis fine adjustment module, the XY-axis adjustment module is arranged inside the lens barrel, a limiting boss is arranged on the inner wall of the lens barrel, the first spring is arranged between the limiting boss and the XY-axis fine adjustment module, the retaining ring is in threaded cooperation with the lens barrel, and the retaining ring abuts against the XY-axis fine adjustment module. The present invention is applied to the technical field of optical detection equipment or optical measuring instruments.

Description

Technical Field

[0001] The present invention is applied to the technical field of optical detection devices or optical measuring instruments, and particularly relates to an optical device position adjusting device. Background Art

[0002] In the field of precision manufacturing, optical detection devices and optical measuring instruments play an important role, effectively promoting the improvement of the precision manufacturing production process level. Especially with the development of the 3C electronics and semiconductor industries, high-precision optical detection devices effectively drive the upgrading of semiconductor process levels. Optical path debugging plays a decisive role in the performance of optical instruments. The quality of optomechanical assembly directly affects the performance of the optical path. Especially in high-precision detection instruments or devices, the quality of optomechanical assembly determines the resolution and accuracy of the instruments.

[0003] In high-precision optical detection instruments, most optical paths require good positioning accuracy of optical devices so that the optical system can perform optical path detection according to the design requirements. For example, in the field of fiber optic coupling alignment and confocal pinhole or slit alignment, the positioning accuracy of optical devices needs to reach the micron level. At this time, it is difficult to ensure the positioning accuracy through the machining accuracy of mechanical parts. Therefore, optomechanical assembly is required to position the optical device at the specified design position through optomechanical assembly.

[0004] For the alignment and pose adjustment of precision optical components in high-precision optomechanical assembly (especially the alignment of optical fibers, pinholes, and slits), the positioning accuracy of such optical components often needs to reach the micron level. At this time, it cannot be guaranteed by machining and assembly accuracy. Therefore, manual adjustment of this component is required to meet the usage requirements of the system. Based on the above problems, three-dimensional precision displacement workbenches or six-dimensional precision displacement workbenches are generally used in the industry for external auxiliary adjustment. After the adjustment purpose is achieved, glue dispensing or screw locking is required. However, this adjustment can only be carried out offline. If the optical system deteriorates due to stress or other reasons, it cannot be corrected in a timely manner.

[0005] When using a six-axis stage for fiber optic alignment and coupling, first, the fiber optic needs to be connected to the six-axis stage through a jig. Second, in an optical system with limited space, the six-axis stage may not be able to be placed. Moreover, after the fiber optic is adjusted to the appropriate position by the six-axis stage, glue needs to be applied for fixation, and problems such as position deviation may occur during the glue application process. After the glue cures, position deviation may also occur due to stress and other reasons. If the performance of the optical system deteriorates due to reasons such as system stress and temperature changes after curing, the fiber optic cannot be recoupled by adjusting its position, resulting in poor stability. Adjusting a pinhole or slit in the prior art also has great adjustment difficulties. Usually, a mechanical fixture is used for manual fine-tuning. Since the adjustment accuracy of the pinhole or slit needs to reach the micron level to meet the requirements of optical system assembly and adjustment, this method has low adjustment efficiency and accuracy. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an optical device position adjustment device with a simple structure, high adjustment accuracy, and the ability to achieve online fine-tuning, thereby improving the adjustment efficiency, which can well solve the above problems.

[0007] The technical solution adopted by the present invention is as follows: The present invention includes a lens barrel, a first spring, a retaining ring, a carrier, and an XY-axis fine-tuning module. The carrier is arranged on the XY-axis fine-tuning module, the XY-axis adjustment module is arranged inside the lens barrel, a limiting boss is arranged on the inner wall of the lens barrel, the first spring is arranged between the limiting boss and the XY-axis fine-tuning module, the retaining ring is in threaded cooperation with the lens barrel, and the retaining ring abuts against the XY-axis fine-tuning module.

[0008] As can be seen from the above solution, the optical device is positioned on the carrier. During the use of the optical device, when its position needs to be adjusted, the retaining ring is screwed clockwise. Since the retaining ring is in threaded cooperation with the lens barrel, under the pressing of the retaining ring, the XY-axis fine-tuning module can move along the Z-axis direction. A limiting boss is arranged on the inner wall of the lens barrel, and the first spring is arranged between the limiting boss and the XY-axis fine-tuning module. When the retaining ring is screwed counterclockwise, the XY-axis fine-tuning module can be retracted under the reaction force of the first spring to adjust the position of the optical device in the Z-axis direction. At the same time, under the action of the XY-axis fine-tuning module, the position of the optical device in the X-axis and Y-axis directions can also be adjusted. Therefore, the present invention not only has a simple structure but also is easy to operate. After the adjustment is completed, there is no need for glue fixation or screw locking, avoiding the problem of position deviation, greatly improving the adjustment accuracy, having high reliability, realizing the online fine-tuning of the optical device in the actual use environment, thereby greatly improving the adjustment efficiency and ensuring the maximization of the optical system efficiency.

[0009] Furthermore, the XY-axis fine-tuning module includes an X-axis fine-tuning component and a Y-axis fine-tuning component. The X-axis fine-tuning component includes an X-axis adjustment frame, a first fine-tuning screw, and several second springs. The X-axis adjustment frame is disposed around the Y-axis fine-tuning component. The carrier is disposed on the Y-axis fine-tuning component. The X-axis adjustment frame is connected to the Y-axis fine-tuning component by several second springs. The second springs are arranged in the X-axis direction. The first fine-tuning screw passes through the lens barrel in the X-axis direction and is threadedly connected to the X-axis adjustment frame. The first fine-tuning screw abuts against the Y-axis fine-tuning component. Thus, the carrier is disposed on the Y-axis fine-tuning component. When the first fine-tuning screw is screwed clockwise, the Y-axis fine-tuning component will move along the X-axis direction under the pressing of the first fine-tuning screw. When the first fine-tuning screw is screwed counterclockwise, the Y-axis fine-tuning component will be retracted under the reaction force of the second springs, so as to adjust the position of the optical device in the X-axis direction online.

[0010] Furthermore, the Y-axis fine-tuning component includes a Y-axis adjustment frame, a second fine-tuning screw, and several third springs. The X-axis adjustment frame is disposed around the Y-axis adjustment frame. The Y-axis adjustment frame is disposed around the carrier. The X-axis adjustment frame is connected to the Y-axis adjustment frame by several second springs. The first fine-tuning screw abuts against the Y-axis adjustment frame. The Y-axis adjustment frame is connected to the carrier by several third springs. The third springs are arranged in the Y-axis direction. The second fine-tuning screw passes through the lens barrel and the X-axis adjustment frame in the Y-axis direction and is threadedly connected to the Y-axis adjustment frame. The second fine-tuning screw abuts against the carrier. Thus, when the second fine-tuning screw is screwed clockwise, the carrier will move along the Y-axis direction under the pressing of the second fine-tuning screw. When the second fine-tuning screw is screwed counterclockwise, the carrier will be retracted under the reaction force of the third springs, so as to adjust the position of the optical device in the Y-axis direction online.

[0011] Furthermore, the carrier includes a mounting block, a positioning block, a plurality of third fine-tuning screws, and a plurality of fourth springs. The Y-axis adjustment frame is disposed around the mounting block. The Y-axis adjustment frame is connected to the mounting block by a plurality of the third springs. The second fine-tuning screw abuts against the mounting block. The mounting block is provided with a profiling groove. The positioning block is fitted in the profiling groove. The positioning block is connected to the mounting block by a plurality of the fourth springs. The fourth springs are arranged in the Z-axis direction. The positioning block is provided with a positioning groove adapted to the optical device. The third fine-tuning screw passes through the positioning block in the Z-axis direction and is threadedly connected to the mounting block. Thus, the positioning block is connected to the mounting block by a plurality of the fourth springs, and the third fine-tuning screw passes through the positioning block in the Z-axis direction and is threadedly connected to the mounting block. Therefore, when the third fine-tuning screw is turned, the angle between the optical device and the XY-axis plane can be adjusted. Among them, the fourth springs provide a reaction force and can play a reset role for the optical device.

[0012] Furthermore, the carrier includes three of the third fine-tuning screws and three of the fourth springs. The three fourth springs are arranged around between the mounting block and the positioning block. The three third fine-tuning screws are arranged around the mounting block. Thus, turning any one of the third fine-tuning screws can achieve the on-line adjustment of the angle between the optical device and the XY-axis plane.

[0013] Furthermore, at least two first kidney-shaped holes are provided on the lens barrel. The first fine-tuning screw and the second fine-tuning screw respectively pass through the two first kidney-shaped holes. Thus, when adjusting the position of the optical device in the Z-axis direction, by providing the two first kidney-shaped holes, it is ensured that the first fine-tuning screw and the second fine-tuning screw have sufficient space for movement.

[0014] Furthermore, the X-axis fine-tuning assembly further includes a plurality of first positioning pins. The first positioning pins are fixed on the Y-axis adjustment frame. A plurality of first positioning holes are provided on the X-axis adjustment frame. The first positioning pins are fitted in the first positioning holes. The second spring is sleeved on the first positioning pins. The Y-axis fine-tuning assembly further includes a plurality of second positioning pins. The second positioning pins are fixed on the mounting block. A plurality of second positioning holes are provided on the Y-axis adjustment frame. The second positioning pins are fitted in the second positioning holes. The third spring is sleeved on the second positioning pins. Thus, the first positioning pins and the second positioning pins respectively play a role in positioning and guiding the displacement adjustment in the X-axis and Y-axis directions, greatly improving the adjustment accuracy.

[0015] Further, a second oblong hole is provided on the X-axis adjustment frame, and the second fine adjustment screw sequentially passes through the first oblong hole and the second oblong hole. Thus, when adjusting the position of the optical device in the X-axis direction, the provision of the second oblong hole ensures that the second fine adjustment screw has sufficient space for movement.

[0016] Further, a plurality of guiding grooves are provided on the inner wall of the lens barrel, and a plurality of guiding pins are provided on the outer wall of the X-axis adjustment frame. The guiding pins are fitted in the guiding grooves, and the X-axis adjustment frame is slidably fitted on the lens barrel in the Z-axis direction. Thus, the guiding pins being fitted in the guiding grooves play a role of positioning and guiding in adjusting the position of the optical device in the Z-axis direction, preventing the optical device from changing its angle as the retaining ring rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 is an exploded view of the present invention;

[0020] Figure 4 is a front view of the XY-axis fine adjustment module;

[0021] Figure 5 is an exploded view of the XY-axis fine adjustment module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figures 1 to 5 shown, in this embodiment, the present invention includes a lens barrel 1, a first spring 2, a retaining ring 3, a carrier 4, and an XY-axis fine adjustment module 5. The carrier 4 is disposed on the XY-axis fine adjustment module 5. The XY-axis adjustment module is disposed inside the lens barrel 1. A limiting boss 6 is provided on the inner wall of the lens barrel 1. The first spring 2 is disposed between the limiting boss 6 and the XY-axis fine adjustment module 5. The retaining ring 3 is in threaded fit with the lens barrel 1, and the retaining ring 3 abuts against the XY-axis fine adjustment module 5. Among them, the limiting boss 6 is annular.

[0023] In this embodiment, the XY-axis fine adjustment module 5 includes an X-axis fine adjustment component and a Y-axis fine adjustment component. The X-axis fine adjustment component includes an X-axis adjustment frame 51, a first fine adjustment screw 52, and several second springs 53. The X-axis adjustment frame 51 is disposed around the Y-axis fine adjustment component. The carrier 4 is disposed on the Y-axis fine adjustment component. The X-axis adjustment frame 51 is connected to the Y-axis fine adjustment component by several second springs 53. The second springs 53 are arranged in the X-axis direction. The first fine adjustment screw 52 passes through the lens barrel 1 in the X-axis direction and is threadedly connected to the X-axis adjustment frame 51. The first fine adjustment screw 52 abuts against the Y-axis fine adjustment component.

[0024] In this embodiment, the Y-axis fine adjustment component includes a Y-axis adjustment frame 54, a second fine adjustment screw 55, and several third springs 56. The X-axis adjustment frame 51 is disposed around the Y-axis adjustment frame 54. The Y-axis adjustment frame 54 is disposed around the carrier 4. The X-axis adjustment frame 51 is connected to the Y-axis adjustment frame 54 by several second springs 53. The first fine adjustment screw 52 abuts against the Y-axis adjustment frame 54. The Y-axis adjustment frame 54 is connected to the carrier 4 by several third springs 56. The third springs 56 are arranged in the Y-axis direction. The second fine adjustment screw 55 passes through the lens barrel 1 and the X-axis adjustment frame 51 in the Y-axis direction and is threadedly connected to the Y-axis adjustment frame 54. The second fine adjustment screw 55 abuts against the carrier 4.

[0025] In this embodiment, the carrier 4 includes a mounting block 41, a positioning block 42, several third fine adjustment screws 43, and several fourth springs 44. The Y-axis adjustment frame 54 is disposed around the mounting block 41. The Y-axis adjustment frame 54 is connected to the mounting block 41 by several third springs 56. The second fine adjustment screw 55 abuts against the mounting block 41. The mounting block 41 is provided with a profiling groove 7. The positioning block 42 is fitted in the profiling groove 7. The positioning block 42 is connected to the mounting block 41 by several fourth springs 44. The fourth springs 44 are arranged in the Z-axis direction. The positioning block 42 is provided with a positioning groove 9 adapted to the optical device 8. The third fine adjustment screw 43 passes through the positioning block 42 in the Z-axis direction and is threadedly connected to the mounting block 41.

[0026] In this embodiment, the vehicle 4 includes three of the third fine-tuning screws 43 and three of the fourth springs 44. The three fourth springs 44 are arranged in a surrounding manner between the mounting block 41 and the positioning block 42, and the three third fine-tuning screws 43 are arranged in a surrounding manner on the mounting block 41. Among them, the connection lines between the three third fine-tuning screws 43 form an equilateral triangle, and the connection lines between the three fourth springs 44 also form an equilateral triangle.

[0027] In this embodiment, at least two first kidney-shaped holes 10 are provided on the lens barrel 1, and the first fine-tuning screw 52 and the second fine-tuning screw 55 respectively pass through the two first kidney-shaped holes 10.

[0028] In this embodiment, the X-axis fine-tuning assembly further includes a plurality of first positioning pins 57. The first positioning pins 57 are fixed on the Y-axis adjustment frame 54. A plurality of first positioning holes 11 are provided on the X-axis adjustment frame 51. The first positioning pins 57 are fitted in the first positioning holes 11. The second spring 53 is sleeved on the first positioning pins 57. The Y-axis fine-tuning assembly further includes a plurality of second positioning pins 58. The second positioning pins 58 are fixed on the mounting block 41. A plurality of second positioning holes 12 are provided on the Y-axis adjustment frame 54. The second positioning pins 58 are fitted in the second positioning holes 12. The third spring 56 is sleeved on the second positioning pins 58.

[0029] In this embodiment, a second kidney-shaped hole 13 is provided on the X-axis adjustment frame 51, and the second fine-tuning screw 55 sequentially passes through the first kidney-shaped hole 10 and the second kidney-shaped hole 13.

[0030] In this embodiment, a plurality of guide grooves 14 are provided on the inner wall of the lens barrel 1, and a plurality of guide pins 15 are provided on the outer wall of the X-axis adjustment frame 51. The guide pins 15 are fitted in the guide grooves 14, and the X-axis adjustment frame 51 is slidably engaged with the lens barrel 1 in the Z-axis direction.

[0031] In this embodiment, the optical device 8 is a slit plate, and the slit plate is positioned and fitted in the positioning groove 9, and the slit plate can be fixed on the positioning block 42 by using glue.

[0032] In this embodiment, the working principle of the present invention is as follows:

[0033] When it is necessary to adjust the position of the optical device 8 in the X-axis direction, turn the first fine-tuning screw 52 clockwise. The Y-axis adjustment frame 54 will move along the X-axis direction under the pressing of the first fine-tuning screw 52, thereby driving the optical device 8 to move. When the first fine-tuning screw 52 is turned counterclockwise, the Y-axis adjustment frame 54 will be retracted under the reaction force of the second spring 53, so as to adjust the position of the optical device 8 in the X-axis direction.

[0034] When it is necessary to adjust the position of the optical device 8 in the Y-axis direction, turn the second fine-tuning screw 55 clockwise. The mounting block 41 will move along the Y-axis direction under the pressing of the second fine-tuning screw 55, thereby driving the optical device 8 to move. When the second fine-tuning screw 55 is turned counterclockwise, the mounting block 41 will be retracted under the reaction force of the third spring 56, so as to adjust the position of the optical device 8 in the Y-axis direction.

[0035] When it is necessary to adjust the position of the optical device 8 in the Z-axis direction, turn the snap ring 3 clockwise. Since the snap ring 3 is in threaded cooperation with the lens barrel 1, the XY-axis fine-tuning module 5 can move along the Z-axis direction under the pressing of the snap ring 3, thereby driving the optical device 8 to move. When the snap ring 3 is turned counterclockwise, the XY-axis fine-tuning module 5 can be retracted under the reaction force of the first spring 2, so as to adjust the position of the optical device 8 in the Z-axis direction.

[0036] When one of the third fine-tuning screws 53 is turned, the angle between the optical device 8 and the XY-axis plane can be adjusted. Among them, the fourth spring 44 provides a reaction force, which can play a reset role for the optical device 8.

[0037] Therefore, the present invention not only has a simple structure and is easy to operate, but also does not require glue fixing or screw locking after adjustment, avoiding the problem of position deviation, greatly improving the adjustment accuracy, having high reliability, realizing the on-line fine-tuning of the optical device in the actual use environment, thereby greatly improving the adjustment efficiency and ensuring the maximization of the optical system efficiency.

Claims

1. An optical device position adjusting device, characterized in that: It includes a lens barrel (1), a first spring (2), a retaining ring (3), a carrier (4), and an XY-axis fine-tuning module (5). The carrier (4) is arranged on the XY-axis fine-tuning module (5), the XY-axis fine-tuning module (5) is arranged inside the lens barrel (1), a limiting boss (6) is arranged on the inner wall of the lens barrel (1), the first spring (2) is arranged between the limiting boss (6) and the XY-axis fine-tuning module (5), the retaining ring (3) is in threaded cooperation with the lens barrel (1), and the retaining ring (3) abuts against the XY-axis fine-tuning module (5); the XY-axis fine-tuning module (5) includes an X-axis fine-tuning component and a Y-axis fine-tuning component. The X-axis fine-tuning component includes an X-axis adjusting frame (51), a first fine-tuning screw (52), and a plurality of second springs (53). The X-axis adjusting frame (51) is arranged on the periphery of the Y-axis fine-tuning component, the carrier (4) is arranged on the Y-axis fine-tuning component, the X-axis adjusting frame (51) is connected to the Y-axis fine-tuning component through a plurality of the second springs (53), the second springs (53) are arranged in the X-axis direction, the first fine-tuning screw (52) passes through the lens barrel (1) along the X-axis direction and is in threaded connection with the X-axis adjusting frame (51), and the first fine-tuning screw (52) abuts against the Y-axis fine-tuning component.

2. The optical device position adjusting device according to claim 1, characterized in that: The Y-axis fine-tuning component includes a Y-axis adjusting frame (54), a second fine-tuning screw (55), and a plurality of third springs (56). The X-axis adjusting frame (51) is arranged on the periphery of the Y-axis adjusting frame (54), the Y-axis adjusting frame (54) is arranged on the periphery of the carrier (4), the X-axis adjusting frame (51) is connected to the Y-axis adjusting frame (54) through a plurality of the second springs (53), the first fine-tuning screw (52) abuts against the Y-axis adjusting frame (54), the Y-axis adjusting frame (54) is connected to the carrier (4) through a plurality of the third springs (56), the third springs (56) are arranged in the Y-axis direction, the second fine-tuning screw (55) passes through the lens barrel (1) and the X-axis adjusting frame (51) in sequence along the Y-axis direction and is in threaded connection with the Y-axis adjusting frame (54), and the second fine-tuning screw (55) abuts against the carrier (4).

3. An optical device position adjustment device according to claim 2, characterized in that: The vehicle (4) includes a mounting block (41), a positioning block (42), a plurality of third fine-tuning screws (43) and a plurality of fourth springs (44). The Y-axis adjustment frame (54) is arranged around the mounting block (41). The Y-axis adjustment frame (54) is connected to the mounting block (41) through a plurality of the third springs (56). The second fine-tuning screw (55) abuts against the mounting block (41). A profiling groove (7) is provided on the mounting block (41). The positioning block (42) is fitted in the profiling groove (7). The positioning block (42) is connected to the mounting block (41) through a plurality of the fourth springs (44). The fourth springs (44) are arranged in the Z-axis direction. A positioning groove (9) adapted to the optical device (8) is provided on the positioning block (42). The third fine-tuning screw (43) passes through the positioning block (42) in the Z-axis direction and is threadedly connected to the mounting block (41).

4. The optical device position adjusting device according to claim 3, wherein: The vehicle (4) includes three of the third fine-tuning screws (43) and three of the fourth springs (44). The three fourth springs (44) are arranged around between the mounting block (41) and the positioning block (42). The three third fine-tuning screws (43) are arranged around on the mounting block (41).

5. The optical device position adjusting device according to claim 2, characterized in that: At least two first kidney-shaped holes (10) are provided on the lens barrel (1). The first fine-tuning screw (52) and the second fine-tuning screw (55) respectively pass through the two first kidney-shaped holes (10).

6. The optical device position adjusting device according to claim 3, characterized in that: The X-axis fine-tuning assembly further includes a plurality of first positioning pins (57). The first positioning pins (57) are fixed on the Y-axis adjustment frame (54). A plurality of first positioning holes (11) are provided on the X-axis adjustment frame (51). The first positioning pins (57) are fitted in the first positioning holes (11). The second spring (53) is sleeved on the first positioning pins (57). The Y-axis fine-tuning assembly further includes a plurality of second positioning pins (58). The second positioning pins (58) are fixed on the mounting block (41). A plurality of second positioning holes (12) are provided on the Y-axis adjustment frame (54). The second positioning pins (58) are fitted in the second positioning holes (12). The third spring (56) is sleeved on the second positioning pins (58).

7. An optical device position adjusting device according to claim 5, characterized in that: A second kidney-shaped hole (13) is provided on the X-axis adjustment frame (51). The second fine-tuning screw (55) sequentially passes through the first kidney-shaped hole (10) and the second kidney-shaped hole (13).

8. The position adjusting device for an optical device according to claim 1, characterized in that: A plurality of guide grooves (14) are provided on the inner wall of the lens barrel (1). A plurality of guide pins (15) are arranged on the outer wall of the X-axis adjustment frame (51). The guide pins (15) are fitted in the guide grooves (14). The X-axis adjustment frame (51) is slidably fitted on the lens barrel (1) in the Z-axis direction.

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