CN214185718U - Light path correcting unit - Google Patents

Abstract

The utility model discloses a light path correcting unit relates to the laser beam machining device field. The scheme comprises a hollow base body, wherein a correction reference part and a correction adjusting part are arranged on the base body, a first light passing through hole is formed in the correction reference part, at least two first correction edges which extend towards the center direction of the first light passing through hole and are mutually connected are arranged on the correction reference part, and a first correction through hole is formed in each first correction edge; the correction adjusting part is movably connected with the base body and is fixed through a fixing component; the correcting and adjusting part is provided with a second light passing through hole, a second correcting edge is arranged on the correcting and adjusting part corresponding to the first correcting edge, and a second correcting through hole is arranged on the second correcting edge corresponding to the first correcting through hole. The light path correcting device has the advantages of portability and convenience in correction.

Description

Light path correcting unit

Technical Field

The utility model relates to a laser beam machining device field, concretely relates to light path correcting unit.

Background

The laser processing technology is a one-step processing technology for cutting, welding, surface processing, punching, micro-processing and the like of materials (including metals and non-metals) by utilizing the interaction characteristic of a laser beam and a substance.

As an advanced manufacturing technology, laser processing has been widely applied to national economic important departments such as automobiles, electronics, electrical appliances, aviation, metallurgy, mechanical manufacturing and the like, and plays an increasingly important role in improving product quality, labor productivity, automation, no pollution, reducing material consumption and the like.

In the application of the optical path of the laser head, most of laser cutting, welding, marking and the like use a multi-mirror group structure.

The laser has high requirement on the concentricity of the optical path, most of the existing optical path adjusting modes are to check the concentricity of the optical path by using an advanced instrument, the equipment cost is high, and the field maintenance is not facilitated.

In the prior art, chinese patent application No. 201611154566.5 discloses a laser path adjusting apparatus and method. The device comprises a position adjusting seat, a swinging base, a first aligner, a mounting seat, a light aligning seat and a second aligner; the position adjusting seat is used for connecting a laser, and the position of the laser on the position adjusting seat is adjustable; the first aligner is provided with a first cross-shaped hole and is detachably arranged at the first aligning hole; the position of the laser on the position adjusting seat is adjusted, so that laser emitted by the laser can pass through the center of the first cross-shaped hole; a second cross-shaped hole is formed in the second aligner, the second aligner is detachably arranged at the second aligning hole, the swinging base is swung, and laser emitted by the laser can pass through the center of the second cross-shaped hole.

When the device is utilized, the laser is installed on the position adjusting seat, the optical axis of the laser approximately passes through the axis of the first cross-shaped hole, then the laser is accurately adjusted through the position adjusting seat, the optical axis is aligned to the center of the first cross-shaped hole, after the laser is aligned, the position of the laser relative to the center of the first cross-shaped hole is unchanged, the optical axis keeps an aligned state relative to the first cross-shaped hole, then the angle of the optical axis is adjusted through adjusting the swinging base, the optical axis is aligned to the center of the second cross-shaped hole, and therefore accurate light alignment is achieved.

However, since the laser needs to be mounted on the position adjustment base to be debugged, the adjustment device has a limited application range, and is not suitable for field debugging of laser processing equipment.

Therefore, a new optical path correction apparatus needs to be proposed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, a first object of the present invention is to provide an optical path calibration apparatus, which comprises a base, a calibration reference portion and a calibration adjustment portion, wherein the optical path calibration apparatus is connected to an optical path system to be calibrated through the base, and the optical path system is conveniently calibrated. The light path correcting device has the advantages of portability and convenient correction, greatly improves the convenience and correction efficiency of light path correction, has a simple structure and low manufacturing cost, and is favorable for market application and popularization.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

an optical path correcting device comprises a hollow base body, wherein a correcting reference part and a correcting adjusting part are arranged on the base body, and are positioned on a straight line and positioned at two ends of the base body respectively;

the correcting reference part is provided with a first light passing through hole, at least two first correcting edges which extend towards the center direction of the first light passing through hole and are connected with each other are arranged on the correcting reference part, and the first correcting edges are provided with first correcting through holes;

the correction adjusting part is movably connected with the base body and is fixed through a fixing component;

the correcting and adjusting part is provided with a second light passing through hole, a second correcting edge is arranged on the correcting and adjusting part corresponding to the first correcting edge, and a second correcting through hole is formed on the second correcting edge corresponding to the first correcting through hole.

Through the arrangement, when the optical path correcting device is used, the optical path correcting device is connected with an optical path system to be corrected, parallel optical paths of the optical path system sequentially pass through the correcting reference part and the correcting adjusting part, the optical path enables the first correcting edge and the first correcting through hole on the correcting reference part to form a shadow, the second correcting edge on the correcting reference part is superposed with the shadow formed by the first correcting edge through adjusting the correcting part, the second correcting through hole and the second correcting through hole form a shadow to be superposed to complete the reference setting of the correcting device, and then the optical path system can be further corrected.

Preferably, the calibration reference part and/or the calibration adjustment part are detachably connected to the base body.

Through setting up like this, the assembly can be assembled again in the independent manufacturing of correction benchmark portion, correction regulation portion and base member three, and convenient processing reduces the manufacturing degree of difficulty.

Preferably, a connection end is arranged at one end of the base body, where the correction reference portion is located, and the connection end is provided with an external thread or a connection clamping groove.

Through setting up like this, when using this light path correcting unit to rectify, be convenient for be connected the light path correcting unit with the light path system who treats the correction fixedly through the link.

Preferably, the substrate is cylindrical.

Through such setting, be convenient for processing production.

Preferably, two first correcting edges and two second correcting edges are provided, two first correcting edges are orthogonally distributed, and two second correcting edges are orthogonally distributed.

Through setting up like this, under the prerequisite that realizes the calibration function, have the advantage that the structure is simple and convenient.

Preferably, the number of the first correcting edge and the number of the second correcting edge are 4, two of the first correcting edge and two of the second correcting edge are provided in pairs, two of the pairs of the first correcting edge and two of the pairs of the second correcting edge are provided along a straight line, two pairs of the first correcting edges are orthogonally distributed, and two pairs of the second correcting edges are orthogonally distributed.

Through setting up like this, have stable in structure, the difficult advantage that takes place to warp is favorable to keeping the reliability of rectifying.

Preferably, the correction regulation portion includes rotation regulating plate and level adjustment board, rotation regulating plate with the base member is rotationally connected, fixed subassembly includes first screw thread mounting and second screw thread mounting, first screw thread mounting will rotation regulating plate is fixed in on the base member, the horizontal activity of level adjustment board set up in on the rotation regulating plate, second screw thread mounting will level adjustment board with on the rotation regulating plate.

Through setting up like this, rotatory regulating plate rotates with the base member and is connected, level adjusting plate and the horizontal swing joint of rotatory regulating plate to can make correction adjusting part have the degree of freedom of level adjustment and the degree of freedom of rotation regulation, realize the function of rectifying.

Preferably, the tip of base member has been seted up and has been rotated the groove, rotatory regulating plate with rotate groove rotatable fit, the global butt groove that is provided with of rotatory regulating plate, the base member side is along the perpendicular to the rotation axis direction of rotatory regulating plate is provided with first screw hole, first screw thread mounting passes first screw hole and butt in the butt groove.

Through setting up like this, simple structure, the processing and the assembly of being convenient for, through adjusting the elasticity of first screw thread mounting butt in butt groove, and then adjustable rotation regulating plate is rotatory or fixed for the base member.

Preferably, a second threaded hole is formed in the rotary adjusting plate, a through groove is formed in the horizontal adjusting plate, and the second threaded fixing piece penetrates through the through groove and is in threaded connection with the second threaded hole.

Through setting up like this, simple structure, the regulation of being convenient for, through the elasticity of adjusting second screw thread mounting, and then adjustable level adjusting plate for rotatory regulating plate horizontal migration or fixed.

Preferably, the through groove is long, and the length extending direction of the through groove is located on a straight line where the paired second correcting edges are located.

Through setting up like this, through setting up logical groove into rectangular shape to enlarge the home range of level adjustment board, be convenient for rectify.

Compared with the prior art, the utility model discloses profitable technological effect has been obtained:

the light path correcting device has the advantages of portability and convenience in correction, greatly improves convenience and correction efficiency of light path correction, is simple in structure and low in manufacturing cost, is beneficial to market application and popularization, and is particularly suitable for correcting a light path system in currently-used laser processing equipment.

Drawings

Fig. 1 is an explosion schematic diagram of the whole structure of embodiment 1 of the present invention;

fig. 2 is a front view of embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view taken along the plane A-A in FIG. 2;

fig. 4 is a plan view of embodiment 1 of the present invention;

fig. 5 is a schematic diagram of the calibration process in embodiment 2 of the present invention;

fig. 6 is a schematic diagram of the calibration process in embodiment 3 of the present invention.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a substrate; 101. a connecting end; 102. a rotating groove; 103. a first threaded hole; 2. a correction reference part; 201. a first light passing through hole; 202. a first correcting edge; 2021. a first correction through hole; 3. a correction adjustment section; 301. a second light passing through hole; 302. a second correcting edge; 3021. a second correction via; 4. a fixing assembly; 401. a first threaded fastener; 5. rotating the adjusting plate; 501. a butt joint groove; 502. a second threaded hole; 6. a level adjustment plate; 601. a through groove; 7. a light source; 8. a lens; 9. a collimating lens; 10. a mirror; 11. a rotating shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

Example 1

Referring to fig. 1 to 4, the present embodiment discloses an optical path calibration apparatus, including a hollow base 1, a calibration reference part 2 and a calibration adjustment part 3 are disposed on the base 1, the calibration reference part 2 and the calibration adjustment part 3 are located on a straight line and located at two ends of the base 1 respectively;

the first light passing through hole 201 is formed in the correction reference part 2, at least two first correction edges 202 which extend towards the center direction of the first light passing through hole 201 and are connected with each other are arranged on the correction reference part 2, and a first correction through hole 2021 is formed in each first correction edge 202;

the correction adjusting part 3 is movably connected with the base body 1 and is fixed through a fixing component 4;

the adjusting portion 3 is provided with a second light passing through hole 301, the adjusting portion 3 is provided with a second correcting rib 302 corresponding to the first correcting rib 202, and the second correcting rib 302 is provided with a second correcting through hole 3021 corresponding to the first correcting through hole 2021.

The first correcting through hole 2021 can be formed at any position of the first correcting ridge 202, and it is only necessary to ensure that the forming direction of the first correcting ridge 202 is consistent with the forming direction of the first light passing through hole 201;

in a preferred embodiment, the first aligning through hole 2021 is opened at a position where the first aligning ribs 202 are connected to each other, and is disposed concentrically with the first light passing through hole 201.

Similarly, the second correcting through hole 3021 can be formed at any position of the second correcting ridge 302, and it is only necessary to ensure that the forming direction of the second correcting hole is the same as the forming direction of the second light passing through hole 301;

in a preferred embodiment, the second correction through hole 3021 is opened at a position where the second correction ridges 302 are connected to each other, and is disposed concentrically with the second light passing through hole 301.

In a preferred embodiment, the calibration reference part 2 and/or the calibration adjustment part 3 are detachably connected to the base body 1.

In this embodiment, the calibration reference part 2 is fixedly connected or integrally formed with the base 1, and the calibration adjustment part 3 is detachably connected with the base 1.

As a more preferable embodiment, a connection end 101 is arranged at one end of the base body 1 where the calibration reference part 2 is located, and the connection end 101 is provided with an external thread or a connection clamping groove, so that the optical path calibration device can be connected with a system to be calibrated in a threaded connection or clamping connection mode, and the connection is convenient.

In other embodiments, a connection interface adapted to the optical path system to be corrected may be further disposed at the connection end 101, so as to be suitable for the correction of a specific optical path system.

In a preferred embodiment, the base 1 is cylindrical, and the calibration reference part 2 and the calibration adjustment part 3 are located at both ends of the base 1 in the axial direction.

In other embodiments, the substrate 1 may also be an elongated cylinder with a central line and a symmetrical or asymmetrical cross-section, for example: a cylinder with a square cross section, a cylinder with a diamond cross section, etc.

In one embodiment, two first correction ridges 202 and two second correction ridges 302 are provided, two first correction ridges 202 are orthogonally arranged, and two second correction ridges 302 are orthogonally arranged.

As a more preferable embodiment, in this embodiment, referring to fig. 1, 4 first correction edges 202 and 4 second correction edges 302 are provided, each of the first correction edges 202 and the second correction edges 302 are provided in pairs, two first correction edges 202 in a pair and two second correction edges 302 in a pair are provided along a straight line, two pairs of first correction edges 202 are orthogonally distributed, and two pairs of second correction edges 302 are orthogonally distributed.

In a preferred embodiment, the first and second correcting ribs 202, 302 have the same width; the first correction through hole 2021 and the second correction through hole 3021 have the same diameter.

In a preferred embodiment, the adjusting unit 3 includes a rotary adjusting plate 5 and a level adjusting plate 6, the rotary adjusting plate 5 is rotatably connected to the base 1, the fixing assembly 4 includes a first screw-thread fixing member 401 and a second screw-thread fixing member (not shown), the first screw-thread fixing member 401 fixes the rotary adjusting plate 5 to the base 1, the level adjusting plate 6 is horizontally movably disposed on the rotary adjusting plate 5, and the second screw-thread fixing member fixes the level adjusting plate 6 to the rotary adjusting plate 5.

As a more preferable embodiment, in this embodiment, a rotation groove 102 is formed at an end of the base body 1, the rotation adjusting plate 5 is rotatably fitted with the rotation groove 102, and a rotation axis of the rotation adjusting plate 5 coincides with an axis of the base body 1 itself;

the circumferential surface of the rotation adjusting plate 5 is provided with a butting groove 501, the side surface of the base body 1 is provided with a first threaded hole 103 along the direction perpendicular to the rotation axis 11 of the rotation adjusting plate 5, and the first threaded fastener 401 passes through the first threaded hole 103 and butts against the butting groove 501.

In other implementations, it may also be provided that: the rotary adjusting plate is provided with a rotary adjusting plate 5, the rotary adjusting plate 5 is sleeved on the periphery of the base body 1, a butt joint groove 501 is formed in the outer wall of the base body 1, a first threaded hole 103 is formed in the peripheral surface of the rotary adjusting plate 5, the first threaded fixing piece 401 penetrates through the rotary adjusting plate 5 and abuts against the butt joint groove 501, and the rotary adjusting plate 5 can be adjusted to rotate or be fixed relative to the base body 1 by adjusting the tightness of the first threaded fixing piece 401 abutting against the butt joint groove 501.

In the present embodiment, a second threaded hole 502 is formed in the rotary adjusting plate 5, a through groove 601 is formed in the horizontal adjusting plate 6, and the second threaded fastener passes through the through groove 601 and is in threaded connection with the second threaded hole 502.

In this embodiment, the second through-groove 601 is a circular through-hole, and the diameter of the circular through-hole is larger than that of the second threaded fastener, so that the second threaded fastener has a certain adjustment amount after being unscrewed.

In a more preferred embodiment, the through-groove 601 is elongated, and the longitudinal extension direction of the through-groove 601 is located on a straight line where the pair of second correcting ribs 302 are located.

The first and second threaded fasteners 401, 401 are conventional screws.

Example 2

Referring to fig. 5, the present embodiment discloses a multi-mirror-group optical path correction method, using the optical path correction device in embodiment 1, the multi-mirror-group optical path system corrected by using the multi-mirror-group correction method includes a light source 7 and a plurality of lenses 8, the lenses 8 are distributed along the light emitting direction of the light source 7, and the multi-mirror-group correction method includes the following steps:

s101: setting a reference:

connecting the light path correcting device in the multi-lens group light path system to enable parallel light paths to vertically pass through a correcting reference part 2 and a correcting and adjusting part 3 in sequence;

adjusting the position of the correcting and adjusting part 3 to make the second correcting through hole 3021 and the first correcting through hole 2021 coincide in shadow, and make the second correcting edge 302 and the first correcting edge 202 coincide in shadow, and then fixing the correcting and adjusting part 3 and the base 1 by the fixing component 4;

specifically, referring to fig. 1, the optical path calibration device is fixed to an optical path system to be calibrated, for example, the light emitting end of a laser, through a connecting end 101, and then the laser is tested to emit an indication light, which is converted into parallel light by a prior art means, such as a collimating lens 98, so that the parallel light path vertically passes through the calibration reference portion 2 and the calibration adjustment portion 3 in sequence to form a shadow on a plane perpendicular to the light, and for convenience of adjustment, a paper sheet, a flat plate or other planar platform may be used to assist in observing the shadow formation of the calibration reference portion 2 and the calibration adjustment portion 3;

the process of adjusting the correction adjustment section 3 is: firstly, unscrewing the first threaded fixing part 401, enabling the rotary adjusting plate 5 to rotate relative to the base body 1, adjusting the rotary adjusting plate 5, enabling the second correcting edge 302 to coincide with the shadow of the first correcting edge 202, and screwing the first threaded fixing part 401;

next, the second screw fastener is unscrewed, so that the leveling plate 6 can move horizontally relative to the rotation adjustment plate 5, the leveling plate is adjusted, the shadows of the second correction through hole 3021 and the first correction through hole 2021 are overlapped, and the first screw fastener 401 is screwed down, thereby completing the reference setting process.

S102: lens 8 addition:

adding the lens 8 individually into the optical path;

s103: and (3) optical path correction:

adjusting the angle and position of the collimating lens group of the optical path to make the second correcting through hole 3021 coincide with the imaging of the first correcting through hole 2021, and the second correcting edge 302 coincide with the imaging of the first correcting edge 202;

s104: repeating the steps S102 and S103 in sequence, and adding the plurality of lenses 8 one by one into the optical path and performing correction;

s105: and removing the optical path correcting device from the corrected multi-lens group optical path system.

The correction method is convenient and fast, and the corrected multi-lens-group optical path system can work normally.

Example 3

Referring to fig. 6, the present embodiment discloses a method for correcting a rotational optical path, which uses the optical path correction apparatus in embodiment 1, and a rotational optical path system corrected by using the method for correcting a rotational optical path includes a light source 7, a collimating lens 98, a plurality of reflectors 10 and a plurality of rotating shafts 11, wherein each rotating shaft 11 is correspondingly provided with a reflector 10; the light source 7 passes through the collimating lens 98 and then is converted into parallel light to form a parallel light path.

The rotating optical path correcting method comprises the following steps:

s201: each action rotating shaft 11 of the reset rotating light path; for example, each rotation axis 11 is adjusted to a position of 0 °.

S202: setting a reference:

connecting the light path correcting device to the light path system, adjusting the reflector 10 to make the parallel light path vertically pass through the correcting reference part 2 and the correcting adjusting part 3 in sequence;

referring to fig. 1, the position of the correcting and adjusting part 3 is adjusted so that the second correcting through hole 3021 coincides with the imaging of the first correcting through hole 2021 and the second correcting edge 302 coincides with the imaging of the first correcting edge 202, and then the correcting and adjusting part 3 is fixed to the base 1 by the fixing member 4;

the correction adjusting section 3 in the reference setting of this step adjusts the reference setting of step S101 in reference example 2.

S203: single rotation axis 11 correction:

s2031: rotating the rotating shaft 11 to be corrected by 180 degrees, and recording the imaging deviation value of the second correcting edge 302 and the first correcting edge 202 as X;

s2032: adjusting the reflector 10 on the rotation axis 11 to make the imaging offset value between the second correction edge 302 and the first correction edge 202 be X/2;

s2033: the position of the correcting and adjusting part 3 is adjusted so that the shadow of the second correcting through hole 3021 and the shadow of the first correcting through hole 2021 are overlapped and the shadow of the second correcting edge 302 and the shadow of the first correcting edge 202 are overlapped while keeping the angle of the rotating shaft 11 inconvenient, and the correcting and adjusting part 3 and the base 1 are fixed by the fixing means 4; the process of adjusting the correction adjustment section 3 at this step is the same as the adjustment process at step S202.

S2034: rotating the rotating shaft 11 to be corrected by 180 degrees, and observing whether the shadows of the second correcting edge 302 and the first correcting edge 202 are overlapped;

if the rotation axes 11 coincide with each other, the correction is completed, and S203 is repeated to continue the correction of other rotation axes 11 until all the rotation axes 11 are corrected;

otherwise, recording the shading offset values of the second correcting edge 302 and the first correcting edge 202, and repeating the steps S2032, S2033 and S2034 until the correction is successful;

s204: after the correction is completed, the optical path correction device is removed from the corrected rotating optical path system.

By adopting the correction method, the correction is convenient and fast, and the corrected rotary optical path system can work normally. The multi-axis laser cutting head optical path correction device is particularly suitable for optical path correction of a multi-axis laser cutting head which is commonly used at present.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (10)

1. An optical path correcting device is characterized by comprising a hollow base body (1), wherein a correcting reference part (2) and a correcting adjusting part (3) are arranged on the base body (1), and the correcting reference part (2) and the correcting adjusting part (3) are positioned on the same straight line and are respectively positioned at two ends of the base body (1);

the correcting reference part (2) is provided with a first light passing through hole (201), the correcting reference part (2) is provided with at least two first correcting edges (202) which extend towards the center direction of the first light passing through hole (201) and are connected with each other, and the first correcting edges (202) are provided with first correcting through holes (2021);

the correction adjusting part (3) is movably connected with the base body (1) and is fixed through a fixing component (4);

the correcting and adjusting part (3) is provided with a second light passing through hole (301), the correcting and adjusting part (3) is provided with a second correcting edge (302) corresponding to the first correcting edge (202), and the second correcting edge (302) is provided with a second correcting through hole (3021) corresponding to the first correcting through hole (2021).

2. The optical path correction apparatus according to claim 1, characterized in that the base body (1) is cylindrical.

3. The optical path correction device according to claim 1 or 2, wherein two first correction ribs (202) and two second correction ribs (302) are provided, two first correction ribs (202) are orthogonally arranged, and two second correction ribs (302) are orthogonally arranged.

4. The optical path correction device according to claim 1 or 2, wherein 4 of the first correction edges (202) and 4 of the second correction edges (302) are provided, each of the first correction edges (202) and the second correction edges (302) are provided in pairs, two of the first correction edges (202) in a pair and two of the second correction edges (302) in a pair are provided along a straight line, two pairs of the first correction edges (202) are orthogonally distributed, and two pairs of the second correction edges (302) are orthogonally distributed.

5. The optical path correction apparatus according to claim 4, characterized in that the correction reference portion (2) and/or the correction adjustment portion (3) are detachably connected to the base body (1).

6. The optical path correction apparatus according to claim 5, wherein the correction adjustment portion (3) comprises a rotation adjustment plate (5) and a level adjustment plate (6), the rotation adjustment plate (5) is rotatably connected to the base body (1), the fixing member (4) comprises a first screw fixing member (401) and a second screw fixing member, the first screw fixing member (401) fixes the rotation adjustment plate (5) to the base body (1), the level adjustment plate (6) is horizontally movably disposed on the rotation adjustment plate (5), and the second screw fixing member fixes the level adjustment plate (6) to the rotation adjustment plate (5).

7. The optical path correction device according to claim 6, wherein a rotation groove (102) is formed at an end of the base body (1), the rotation adjusting plate (5) is rotatably matched with the rotation groove (102), a butt groove (501) is formed on a circumferential surface of the rotation adjusting plate (5), a first threaded hole (103) is formed in a side surface of the base body (1) along a direction perpendicular to a rotation axis (11) of the rotation adjusting plate (5), and the first threaded fixing member (401) penetrates through the first threaded hole (103) and abuts against the butt groove (501).

8. The optical path correction device according to claim 6 or 7, wherein the rotary adjustment plate (5) is provided with a second threaded hole (502), the level adjustment plate (6) is provided with a through slot (601), and the second threaded fixing member passes through the through slot (601) and is in threaded connection with the second threaded hole (502).

9. The optical path correction apparatus according to claim 8, wherein the through groove (601) is elongated, and a length extending direction of the through groove (601) is located on a straight line where the pair of second correction ribs (302) are located.

10. The optical path correction device according to claim 1, 2, 5, 6, 7 or 9, wherein a connection end (101) is provided at an end of the base body (1) where the correction reference portion (2) is located, and the connection end (101) is provided with an external thread or a connection slot.

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