Collimator for adjusting parallelism of optical instrument

Abstract

The utility model discloses a collimator for optical instrument parallelism adjustment, which relates to the technical field of optical instrument detection equipment and comprises a laser generator and a cylinder fixedly connected to the output end of the laser generator, a frame is slidably connected to the inner arc wall of the cylinder, and a convex lens is coaxially arranged on the inner side of the frame. The outer arc wall of the convex lens is slidably connected with four fixing seats which are distributed in an annular array, and the ends, away from the convex lens, of the fixing seats are rotatably connected to the inner arc wall of the frame body; according to the utility model, the deflection angle of the lens is adjusted through the plurality of first adjusting knobs, the direction of a light beam output by the laser generator after being refracted by the lens can be finely adjusted, so that the light beam can more accurately point to a target position, and the second adjusting knob enables the lens to axially move so as to adjust the focusing position of the light beam. It is ensured that the light beam forms a clear focus at the target position, meanwhile, the adjustable lens can eliminate light beam deflection caused by manufacturing or assembling errors, and therefore the adjustment and calibration precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instrument detection equipment, in particular to a collimator used for parallel adjustment of optical instruments. Background Art

[0002] Optical instruments are composed of a single or multiple optical components, and use optical principles to achieve certain functions or serve certain purposes. In the process of parallelizing optical instruments, the collimator is a key measurement tool, and its performance directly affects the calibration accuracy of the optical system. In traditional collimator design, the light emitted by the laser generator forms parallel light after passing through the lens, which is used to adjust the parallelism of the optical system. However, different input waves need to be replaced under different detection environments or different detection requirements. When the frequency of the input wave (i.e., laser) changes, the refractive index of the lens will also change. This is caused by the dispersion effect of the lens material.

[0003] The dispersion effect refers to the fact that when light propagates through a medium, its propagation speed varies due to the different frequencies (or wavelengths) of the light, resulting in varying degrees of deflection of the light after passing through a lens. This deflection phenomenon is particularly significant in collimators, because collimators need to emit parallel light with high precision. When the frequency of the input wave changes, the refractive index of the lens changes, causing the deflection angle of the light to also change, so that the output light is no longer strictly parallel. This non-parallel light output can seriously affect the calibration accuracy of optical instruments, especially when calibrating high-precision optical systems. Small angular deviations can lead to significant errors in the calibration results. Therefore, the performance of traditional collimators is often limited when facing input waves of different frequencies, and they cannot meet the requirements of high-precision calibration.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The purpose of the present utility model is to provide a collimator for parallel adjustment of optical instruments, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides a collimator for adjusting the parallelism of optical instruments, including a laser generator and a cylinder fixedly connected to the output end of the laser generator, a frame is slidably connected to the inner arc wall of the cylinder, a convex lens is coaxially provided on the inner side of the frame, four fixing seats distributed in a circular array are slidably connected to the outer arc wall of the convex lens, one end of the fixing seat away from the convex lens is rotatably connected to the inner arc wall of the frame, and an adjustment knob 1 is rotatably connected at the positions of two adjacent fixing seats on the outer arc wall of the frame, and the adjustment knob 1 is fixedly connected to the fixing seat.

[0007] Furthermore, the adjustment knob 1 includes a fixing plate fixedly connected to the center of a side wall of the fixing seat away from the convex lens, and a channel 1 is opened on the outer arc wall of the frame at a position corresponding to the fixing seat and passing through the radial direction of the convex lens. The fixing plate rotates in the channel 1, and a limiting plate is fixedly connected to the side wall of the fixing plate away from the fixing seat. A spring is abutted on the side of the fixing plate away from the fixing seat, and the limiting plate is located between the two ends of the spring.

[0008] Furthermore, both ends of the spring are fixedly connected with elbows extending axially thereto, a limit block is sleeved on the inner side of the spring, a through slot is provided at the edge of a side wall of the limit block close to the fixed plate, the through slot is arranged to pass through the axial direction of the limit block, the end of the limit plate away from the fixed plate is passed through the through slot and the limit block does not contact the limit plate, and the elbows at both ends of the spring are respectively located between the side of the limit plate and the through slot close to each other.

[0009] Furthermore, an adjusting knob 1 is fixedly connected to a side wall of the limit block away from the fixed plate, the outer arc wall of the spring is rotatably abutted against the inner arc wall of the channel 1, and the end of the adjusting knob 1 away from the limit block passes through the outer arc wall of the cylinder, and a channel 2 is opened on the outer arc wall of the cylinder at a position corresponding to the adjusting knob 1. The channel 2 is arranged to pass through the cylinder radially and the length direction of the channel 2 is parallel to the axial direction of the cylinder.

[0010] Furthermore, a slide groove 1 is provided at the center of one side wall of the fixing seat close to the convex lens, the length direction of the slide groove 1 is parallel to the axial direction of the cylinder, a slider is slidably connected in the slide groove 1, and a telescopic rod is rotatably connected to the side wall of the slider away from the slide groove 1, and the end of the telescopic rod away from the slider is fixedly connected to the convex lens.

[0011] Furthermore, a rack plate is fixedly connected to the center of the bottom of the frame, and a horizontally arranged tooth column is meshedly connected to the side of the rack plate away from the frame. One end of the tooth column is fixedly connected to an adjusting knob 2, and the end of the adjusting knob 2 away from the tooth column passes through the cylinder.

[0012] Furthermore, the axial direction of the gear column is perpendicular to the axial direction of the cylinder, the teeth on the rack plate are evenly spaced along the axial direction of the cylinder, and the adjustment knob 2 has the same structure as the adjustment knob 1.

[0013] Furthermore, the cylinder is a hollow structure, and the cylinder is coaxially arranged with the output end of the laser generator.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By adjusting the deflection angle of the lens through multiple adjustment knobs one, the direction of the light beam output by the laser generator after refraction through the lens can be fine-tuned to make it point to the target position more accurately. Adjustment knob two allows the lens to move axially to adjust the focus position of the light beam, ensuring that the light beam forms a clear focus at the target position. At the same time, the adjustable lens can eliminate beam deflection caused by manufacturing or assembly errors, thereby improving the adjustment accuracy.

[0016] 2. The limit blocks, springs and limit plates inside adjustment knobs 1 and 2 make the lens self-locking in both directions, thus preventing calibration failure caused by lens deflection due to external interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a cylinder in a collimator used for parallel adjustment of optical instruments;

[0018] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0019] Figure 3 This is an exploded view of the internal structure of the adjustment knob 1 in a collimator used for parallel adjustment of optical instruments;

[0020] Figure 4 This is a schematic diagram of the structure of a collimator used for parallel adjustment of optical instruments, with the frame viewed from an upward angle;

[0021] Figure 5 The figure is a schematic diagram of the overall structure of a collimator used for parallel adjustment of optical instruments.

[0022] In the picture:

[0023] 10. Laser generator; 11. Cylinder;

[0024] 20. Adjustment knob 1; 21. Adjustment knob 2; 22. Gear column; 23. Limit block; 24. Spring; 25. Limit plate; 26. Fixed plate;

[0025] 30. Frame; 31. Lens; 32. Fixed seat; 33. Slider; 34. Telescopic rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 The utility model provides a technical solution: it includes a laser generator 10 and a cylinder 11 fixedly connected to the output end of the laser generator 10, a frame 30 is slidably connected to the inner arc wall of the cylinder 11, a convex lens 31 is coaxially provided on the inner side of the frame 30, four fixing seats 32 distributed in a ring array are slidably connected to the outer arc wall of the convex lens 31, one end of the fixing seat 32 away from the convex lens 31 is rotatably connected to the inner arc wall of the frame 30, and an adjusting knob 20 is rotatably connected to the position of two adjacent fixing seats 32 on the outer arc wall of the frame 30, and the adjusting knob 20 is fixedly connected to the fixing seat 32.

[0028] It should be noted that the external power supply of the laser generator 10 is used to emit a light beam, which is converted into a parallel light beam through multiple convex lenses 31 (the type and number of the convex lenses 31 here can be changed according to the specific usage) and emitted. In a possible embodiment, four fixing seats 32 are respectively located on the left and right sides and the upper and lower sides of the convex lens 31, which is convenient for the user to operate and record the adjustment data.

[0029] See also Figure 1-5 The present utility model provides a technical solution: the adjusting knob 20 includes a fixing plate 26 fixedly connected to the center of a side wall of a fixing seat 32 away from the convex lens 31, and a channel 1 is opened on the outer arc wall of the frame 30 at a position corresponding to the fixing seat 32 and radially penetrating the convex lens 31. The fixing plate 26 rotates in the channel 1, and a limiting plate 25 is fixedly connected to a side wall of the fixing plate 26 away from the fixing seat 32. A spring 24 is abutted on the side of the fixing plate 26 away from the fixing seat 32, and the limiting plate 25 is located between the two ends of the spring 24.

[0030] It should be noted that: anti-slip grooves are provided on the outer arc wall of the adjustment knob 20. In a possible embodiment, the cross-section of the limit plate 25 is fan-shaped, and the axis of the inner arc wall of the limit plate 25 is coaxially arranged with the fixed plate 26. The length of the limit plate 25 is equal to the axial length of the spring 24.

[0031] See also Figure 1-5 The present utility model provides a technical solution: both ends of the spring 24 are fixedly connected with elbows extending axially thereof, and a limit block 23 is sleeved on the inner side of the spring 24. A through groove 1 is opened at the edge of the side wall of the limit block 23 close to the fixed plate 26. The through groove 1 is arranged to pass through the axial direction of the limit block 23, and the end of the limit plate 25 away from the fixed plate 26 is arranged in the through groove 1 and the limit block 23 does not contact the limit plate 25. The elbows at both ends of the spring 24 are respectively located between the side of the limit plate 25 and the through groove 1 close to each other.

[0032] It should be noted that the two inner side walls of the through-slot 1 on the limit block 23 respectively abut against the inner walls of the elbows at both ends of the spring 24, and the two ends of the limit plate 25 respectively abut against the outer walls of the elbows at both ends of the spring 24. When the limit block 23 actively rotates, the through-slot 1 on the limit block 23 abuts against the spring 24. At this time, since the force is applied from the inside of the spring 24, the spring 24 is in a retracted state, and the spring 24 no longer abuts against the inner arc wall of the channel 1, so it can rotate freely.

[0033] However, when the limit block 23 stops and the limit plate 25 and the fixed plate 26 rotate actively, the spring 24 is in an expanded state because the force is applied from the outside of the spring 24. The friction between the spring 24 and the inner arc wall of the channel 1 will increase, thereby preventing the fixed plate 26 from rotating, thereby preventing the convex lens 31 from rotating, and self-locking the convex lens 31 in both directions.

[0034] See also Figure 1-5 The present utility model provides a technical solution: an adjusting knob 20 is fixedly connected to a side wall of the limit block 23 away from the fixed plate 26, the outer arc wall of the spring 24 is rotatably abutted against the inner arc wall of the channel 1, and the end of the adjusting knob 20 away from the limit block 23 passes through the outer arc wall of the cylinder 11, and a channel 2 is opened on the outer arc wall of the cylinder 11 at a position corresponding to the adjusting knob 20, and the channel 2 is arranged to penetrate the cylinder 11 radially and the length direction of the channel 2 is parallel to the axial direction of the cylinder 11.

[0035] It should be noted that the adjusting knob 1 20 and the limit block 23 are fixedly connected via a rotating shaft, and the rotating shaft is slidably connected in the channel 2 to accommodate the displacement generated when the adjusting knob 2 21 adjusts the frame 30 .

[0036] See also Figure 1-5 The present invention provides a technical solution: a slide groove 1 is opened at the center of one side wall of the fixing seat 32 close to the convex lens 31, the length direction of the slide groove 1 is parallel to the axial direction of the cylinder 11, a slider 33 is slidably connected in the slide groove 1, and a telescopic rod 34 is rotatably connected to the side wall of the slider 33 away from the slide groove 1, and the end of the telescopic rod 34 away from the slider 33 is fixedly connected to the convex lens 31.

[0037] It should be noted that: in order to ensure the sliding stability of the slider 33, in a possible embodiment, the longitudinal section of the slide groove 1 is "T"-shaped, the slider 33 and the telescopic rod 34 are rotatably connected to each other through a fixed ear seat, and the axial direction of the rotation axis of the rotation connection between the telescopic rod 34 and the slider 33 is tangent to the outer arc wall of the convex lens 31. For example, when adjusting the adjustment knob 20 located in the vertical direction of the convex lens 31, the convex lens 31 will rotate along the vertical axis of symmetry as the axis center. At this time, the telescopic rods 34 located on both sides of the convex lens 31 in the horizontal direction will drive the slider 33 to slide in the slide groove 1 to adapt to the adjustment of the convex lens 31.

[0038] See also Figure 1-5 The utility model provides a technical solution: a rack plate is fixedly connected to the center of the bottom of the frame 30, and a horizontally arranged tooth column 22 is meshedly connected to the side of the rack plate away from the frame 30. One end of the tooth column 22 is fixedly connected to an adjusting knob 21, and the end of the adjusting knob 21 away from the tooth column 22 passes through the cylinder 11.

[0039] It should be noted that the adjustment knob 21 drives the gear column 22 to engage with the rack plate, thereby moving the frame 30 axially in the cylinder 11 , thereby changing the focal position of the convex lens 31 to adapt to different types of light emitted by the laser generator 10 .

[0040] See also Figure 1-5 The present invention provides a technical solution: the axial direction of the tooth column 22 is perpendicular to the axial direction of the cylinder 11, the teeth on the rack plate are evenly spaced along the axial direction of the cylinder 11, and the adjusting knob 21 and the adjusting knob 1 20 have the same structure;

[0041] The cylinder 11 is a hollow structure, and the cylinder 11 is coaxially arranged with the output end of the laser generator 10 .

[0042] It should be noted that the gear column 22 is used to drive the frame 30 to slide in the cylinder 11 .

[0043] Working principle:

[0044] By turning one of the adjustment knobs 20, the convex lens 31 can be adjusted in angle with the axis of the adjustment knob 20 as the rotation axis, and by turning the other adjustment knob 20, the convex lens 31 can be deflected in angle in another perpendicular plane, thereby achieving all-round adjustment within a certain range. At the same time, the adjustment knob 21 drives the tooth column 22 to engage the rack plate, thereby driving the frame 30 to slide axially along the barrel 11 in the barrel 11, so that the position of the convex lens 31 is changed, thereby changing the focal position of the convex lens 31.

Claims

1. A collimator for calibrating parallelism of an optical instrument, comprising a laser generator (10) and a barrel (11) fixedly connected to the output end of the laser generator (10), a frame (30) being slidably connected to the inner arc wall of the barrel (11), and a convex lens (31) being coaxially provided on the inner side of the frame (30), characterized in that: Four fixing seats (32) distributed in a ring array are slidably connected to the outer arc wall of the convex lens (31); one end of the fixing seat (32) away from the convex lens (31) is rotatably connected to the inner arc wall of the frame (30); and an adjusting knob (20) is rotatably connected at positions on the outer arc wall of the frame (30) corresponding to two adjacent fixing seats (32); and the adjusting knob (20) is fixedly connected to the fixing seat (32).

2. A collimator for parallel alignment of optical instruments according to claim 1, characterized in that: The adjusting knob (20) includes a fixing plate (26) fixedly connected to the center of a side wall of the fixing seat (32) away from the convex lens (31); a channel (26) is provided on the outer arc wall of the frame (30) at a position corresponding to the fixing seat (32) and passing through the convex lens (31) in a radial direction; the fixing plate (26) rotates in the channel; a limiting plate (25) is fixedly connected to a side wall of the fixing plate (26) away from the fixing seat (32); a spring (24) is abutted on one side of the fixing plate (26) away from the fixing seat (32); and the limiting plate (25) is located between the two ends of the spring (24).

3. A collimator for parallel alignment of optical instruments according to claim 2, characterized in that: Both ends of the spring (24) are fixedly connected with elbows extending axially therefrom. A limit block (23) is sleeved on the inner side of the spring (24). A through groove 1 is provided at an edge of a side wall of the limit block (23) close to the fixed plate (26). The through groove 1 is provided along the axial direction of the limit block (23). An end of the limit plate (25) away from the fixed plate (26) is passed through the through groove 1 and the limit block (23) does not contact the limit plate (25). The elbows at both ends of the spring (24) are respectively located between the side of the limit plate (25) and the through groove 1 close to each other.

4. A collimator for parallel adjustment of optical instruments according to claim 3, characterized in that: An adjusting knob 1 (20) is fixedly connected to a side wall of the limit block (23) away from the fixed plate (26), and the outer arc wall of the spring (24) is rotatably abutted against the inner arc wall of the channel 1. An end of the adjusting knob 1 (20) away from the limit block (23) passes through the outer arc wall of the cylinder (11), and a channel 2 is opened on the outer arc wall of the cylinder (11) at a position corresponding to the adjusting knob 1 (20). The channel 2 is radially penetrated by the cylinder (11) and the length direction of the channel 2 is parallel to the axial direction of the cylinder (11).

5. The collimator for parallel adjustment of optical instruments according to claim 1, characterized in that: A slide groove 1 is provided at the center of a side wall of the fixing seat (32) close to the convex lens (31). The length direction of the slide groove 1 is parallel to the axial direction of the cylinder (11). A slider (33) is slidably connected in the slide groove 1. A telescopic rod (34) is rotatably connected to a side wall of the slider (33) away from the slide groove 1. One end of the telescopic rod (34) away from the slider (33) is fixedly connected to the convex lens (31).

6. A collimator for parallel adjustment of optical instruments according to claim 1, characterized in that: A rack plate is fixedly connected to the center of the bottom of the frame (30), and a horizontally arranged tooth column (22) is meshedly connected to the side of the rack plate away from the frame (30). One end of the tooth column (22) is fixedly connected to the second adjusting knob (21), and the end of the second adjusting knob (21) away from the tooth column (22) passes through the cylinder (11).

7. A collimator for parallel adjustment of optical instruments according to claim 6, characterized in that: The axial direction of the tooth column (22) is perpendicular to the axial direction of the cylinder (11), the teeth on the rack plate are evenly spaced along the axial direction of the cylinder (11), and the adjusting knob 2 (21) and the adjusting knob 1 (20) have the same structure.

8. The collimator for parallel adjustment of an optical instrument according to claim 1, characterized in that: The cylinder (11) is a hollow structure, and the cylinder (11) and the output end of the laser generator (10) are coaxially arranged.

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