Laser point line module with points at line tails on two sides

Abstract

The utility model discloses a laser point line module with points at line tails on two sides. The laser point line module comprises a laser point light source assembly and a cylindrical mirror assembly which are coaxially connected, a beam splitter prism assembly is also coaxially arranged in the laser point light source assembly, and the laser point light source assembly is respectively provided with light outlet holes on two lateral beam splitting light paths of the beam splitter prism assembly; two third adjusting through holes are formed in one side of the circumferential contact face of the cylindrical mirror assembly and the laser point light source assembly, the axes of the two third adjusting through holes are located on the two sides of the axis of the laser point light source assembly, and limiting adjusting faces corresponding to the two third adjusting through holes in position are arranged on the periphery of the end of the laser point light source assembly. The device further comprises two first adjusting screws which penetrate into the two third adjusting through holes from outside to inside respectively. Through cooperation of the two first adjusting screws, the two third adjusting through holes and the two limiting adjusting faces, rotary fine adjustment of the cylindrical mirror assembly is achieved, two laser points accurately coincide with line tails on the two sides of the laser light curtain, the overall structure is easy to implement, the adjusting process is simple and rapid, and the adjusting precision is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of lasers, and particularly relates to a laser dot-line module with dots at both ends of the line. Background Art

[0002] Existing laser modules usually form lines or dots through a single beam, and it is difficult to simultaneously meet the composite requirements of line shape and dot positioning. Although some modules generate multiple points or lines through beam splitting technology, there are problems such as complex structure, difficult adjustment, and insufficient accuracy; traditional beam splitting modules are prone to optical path deviation due to component displacement during the adjustment process, and the assembly efficiency is low. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to provide a laser dot-line module with dots at both ends of the line, and solve the problems of adjustment accuracy, adjustment and assembly efficiency of the laser module.

[0004] To achieve the above purpose, the technical solutions adopted by the utility model include:

[0005] A laser dot-line module with dots at both ends of the line includes a coaxially connected laser dot light source assembly and a cylindrical lens assembly. The cylindrical lens assembly includes a cylindrical lens disposed perpendicular to its axis; a beam splitting prism assembly is also coaxially provided inside the laser dot light source assembly. Light output holes are respectively provided on the two-way lateral beam splitting optical paths of the laser dot light source assembly on both sides of the beam splitting prism assembly. The axes of the two light output holes coincide and are perpendicular to the axis of the cylindrical lens; the cylindrical lens assembly is axially limited and buckled on the outer periphery of the end of the laser dot light source assembly, and the circumferential contact surface between the cylindrical lens assembly and the laser dot light source assembly does not contact the light output holes. Two third adjustment through holes are provided on one side of the circumferential contact surface between the cylindrical lens assembly and the laser dot light source assembly. The axes of the two third adjustment through holes are located on both sides of the axis of the laser dot light source assembly. Limiting adjustment surfaces corresponding to the positions of the two third adjustment through holes are provided on the outer periphery of the end of the laser dot light source assembly. The laser dot line module also includes two first adjustment screws respectively penetrating into the two third adjustment through holes from the outside to the inside. Any one of the first adjustment screws is threadedly engaged with the corresponding third adjustment through hole and is in limiting contact with the corresponding limiting adjustment surface.

[0006] Preferably, the axes of the two third adjustment through holes are both perpendicular to the axis of the laser dot light source assembly.

[0007] Preferably, the laser dot light source assembly includes a light source emission section, an orthogonal precision adjustment section, and a limiting and fixing section coaxially connected in sequence along the main optical path direction. The cylindrical lens assembly coaxially includes a base and a cylindrical lens fixing seat along the main optical path direction in sequence; the limiting and fixing section is a hollow cylindrical structure with openings at both ends. The two limiting adjustment surfaces are located on the outer periphery of the limiting and fixing section. A limiting groove matching the structure of the limiting and fixing section is provided at the inner bottom of the base. The two third adjustment through holes are located on the side wall of the base.

[0008] Preferably, there are 2 third fixing through holes that are centrosymmetrically arranged on the base. The axis of the third fixing through hole is parallel to the axis of the cylindrical lens assembly. There are 2 first fixing holes on the limit fixing section that coincide with the axes of the 2 third fixing through holes respectively. There are also 2 second fixing screws. Any second fixing screw sequentially passes through any third fixing through hole and the first fixing hole. The second fixing screw is threadedly connected to the first fixing hole where it is located, and the second fixing screw has a clearance fit with the third fixing through hole where it is located.

[0009] Preferably, a set of first adjustment saw slots and a set of second adjustment saw slots are arranged along the main optical path direction on the orthogonal precision adjustment section. A set of first adjustment saw slots includes 2 first saw slots that are symmetrically distributed along the diameter of the orthogonal precision adjustment section. A set of second adjustment saw slots includes 2 second saw slots that are symmetrically distributed along the diameter of the orthogonal precision adjustment section. The symmetry axes of the 2 first saw slots and the symmetry axes of the 2 second saw slots are perpendicular to each other. There are also 2 second adjustment screws that are centrosymmetrically arranged. The second adjustment screw sequentially passes through the second saw slot and the first saw slot from the end of the limit fixing section. The extended end of the second adjustment screw is in limit contact with the support surface below the first saw slot. There are also 2 third adjustment screws that are centrosymmetrically arranged. The third adjustment screw passes through the second saw slot from the end of the limit fixing section. The extended end of the third adjustment screw is in limit contact with the support surface below the second saw slot.

[0010] Preferably, the beam splitting prism assembly includes a beam splitting support frame fixed inside the limit fixing section, and a Dove prism is fixedly arranged on the beam splitting support frame.

[0011] Preferably, there is also a first fixing screw that radially penetrates from the outside of the limit fixing section into the limit fixing section and the beam splitting support frame.

[0012] Preferably, a diaphragm is coaxially arranged in any light exit hole.

[0013] Preferably, the light source emission section includes a laser tube and a collimating lens that are coaxially arranged in sequence along the main optical path direction.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) For the laser dot-line module with dot-shaped line tails on both sides of the present utility model, through the cooperation of 2 first adjustment screws, 2 third adjustment through holes, and 2 limit adjustment surfaces, the rotational fine adjustment of the cylindrical lens assembly is realized, so that the 2 laser dots are accurately coincident with both sides of the laser light curtain. The overall structure is easy to implement, the adjustment process is simple and fast, with high efficiency and accurate adjustment precision.

[0016] (2) For the laser dot-line module with dot at both sides' line tails of the present utility model, the second fixing screw passes through the third fixing through-hole and is pre-connected to the first fixing hole, then the installation precision of the cylindrical lens assembly is adjusted by 2 first adjusting screws, and finally the second fixing screw is tightened to make the cylindrical lens assembly not rotate, ensuring the coincidence precision between the laser light curtain and the 2 laser dots.

[0017] (3) For the laser dot-line module with dot at both sides' line tails of the present utility model, through the cooperation of the second adjusting screw, the third adjusting screw, the first saw slot and the second saw slot, the adjustment of the orthogonality precision and the coplanarity precision between the middle laser beam and the 2-way split light beams is carried out first.

[0018] (4) For the laser dot-line module with dot at both sides' line tails of the present utility model, the accurate splitting of the light beam is realized through the Dove prism. The light beam in the middle part forms a laser light curtain through the cylindrical lens after being transmitted by the Dove prism, and the light beams on both sides form 2 symmetric laser dots through the diaphragm after being reflected by the Dove prism, and the 2 laser dots accurately coincide with both sides of the laser light curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is the perspective view of the laser dot-line module with dot at both sides' line tails of the present utility model;

[0021] Figure 2 is Figure 1 the sectional view of

[0022] Figure 3 is Figure 1 the exploded view of

[0023] Figure 4 is Figure 3 the rear view of the laser dot light source assembly in

[0024] Figure 5 is Figure 3 the rear view of the cylindrical lens assembly in

[0025] Figure 6 is Figure 5 the bottom view of

[0026] Figure 7 is the usage photo view of the laser dot-line module with dot at both sides' line tails of the present utility model.

[0027] Each label in the figure represents:

[0028] Laser light curtain A, laser dot B;

[0029] 1 Laser point light source assembly, 2 Cylindrical lens assembly, 3 Beam splitting prism assembly;

[0030] 1-1 Light source emission section; 1-2 Orthogonal precision adjustment section, 1-21 First saw slot, 1-22 Second saw slot, 1-23 Light exit hole, 1-230 Diaphragm; 1-3 Limit fixing section; 1-31 First fixing hole, 1-32 First adjustment through hole, 1-320 Third adjustment screw, 1-33 Second adjustment through hole, 1-330 Second adjustment screw, 1-34 Second fixing through hole, 1-340 First fixing screw, 1-35 Limit adjustment surface, 1-1a Laser tube, 1-1b Collimating lens;

[0031] 2-1 Base, 2-10 Limit groove, 2-11 Third fixing through hole, 2-110 Second fixing screw, 2-12 Third adjustment through hole, 2-120 First adjustment screw; 2-2 Cylindrical lens fixing seat, 2-21 Cylindrical lens;

[0032] 3-0 Beam splitting support frame, 3-1 Dove prism; 3-2 Positioning groove. Detailed implementation mode

[0033] The utility model is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solution of this application fall within the protection scope of the utility model.

[0034] It should be noted that the directional terms mentioned in this article, such as "inner cavity", "inner circumference", "inner wall", "outer side" and "up and down", etc., are all consistent with the specific direction on the paper of the specification drawings or the corresponding direction in the space shown in the drawings; all components and devices in the utility model, unless otherwise specified, are all components and devices known in the prior art.

[0035] Embodiment

[0036] As Figures 1-6 , this embodiment discloses a laser dot-line module with dots at both side wire tails, including a coaxially connected laser point light source assembly 1 and a cylindrical lens assembly 2. The cylindrical lens assembly 2 includes a cylindrical lens 2-21 arranged perpendicular to its axis;

[0037] A beam splitting prism assembly 3 is also coaxially arranged inside the laser point light source assembly 1. Light exit holes 1-23 are respectively arranged on the 2-way splitting light paths on the side of the beam splitting prism assembly 3 where the laser point light source assembly 1 is located. The axes of the two light exit holes 1-23 coincide and are perpendicular to the axis of the cylindrical lens 2-21;

[0038] The cylindrical lens assembly 2 is axially limited and buckled on the outer periphery of the end of the laser point light source assembly 1, and the circumferential contact surface between the cylindrical lens assembly 2 and the laser point light source assembly 1 does not contact the light outlet hole 1-23. On one side of the circumferential contact surface between the cylindrical lens assembly 2 and the laser point light source assembly 1, there are 2 third adjustment through holes 2-12. The axes of the 2 third adjustment through holes 2-12 are located on both sides of the axis of the laser point light source assembly 1. On the outer periphery of the end of the laser point light source assembly 1, there is a limit adjustment surface 1-35 corresponding to the positions of the 2 third adjustment through holes 2-12. It also includes 2 first adjustment screws 2-120 that respectively penetrate into the 2 third adjustment through holes 2-12 from the outside to the inside. Any first adjustment screw 2-120 is threadedly engaged with the corresponding third adjustment through hole 2-12 and is in limit contact with the corresponding limit adjustment surface 1-35;

[0039] Its function is as follows: The laser point light source assembly 1 emits a laser beam. After the laser beam irradiates on the beam splitting prism assembly 3, it is divided into three partial beams. Among them, the middle laser beam continues to irradiate on the cylindrical lens 2-21 along the main optical path after transmission. After passing through the transmission, refraction and reflection of the cylindrical lens 2-21, a laser light curtain A is formed. The other 2 split light beams after being reflected by the beam splitting prism assembly 3 are perpendicular to the main optical path and have coincident axes with each other. The 2 split light beams are respectively emitted from the 2 light outlet holes 1-23 to form 2 laser points, obtaining Figure 2 and Figure 7 the laser light curtain A shown in and the 2 laser points B located on both sides of the laser light curtain A;

[0040] During use, the cylindrical lens assembly 2 is axially limited and arranged on the outer periphery of the end of the laser point light source assembly 1. The laser point light source assembly 1 is turned on to emit a laser beam. After the preliminary precision adjustment of the installation position of the cylindrical lens assembly 2 is completed, the 2 first adjustment screws 2-120 respectively penetrate into the 2 third adjustment through holes 2-12 and respectively abut against the 2 limit adjustment surfaces 1-35. According to the positions of the laser light curtain A and the 2 laser points B, the first adjustment screws 2-120 are slightly rotated and adjusted, so that the cylindrical lens assembly 2 realizes rotational fine adjustment until the 2 laser points B are accurately coincident with both sides of the laser light curtain A. At this time, the first adjustment screws 2-120 are tightly abutted against the corresponding limit adjustment surfaces 1-35, and then the laser point light source assembly 1 and the cylindrical lens assembly 2 are axially locked to ensure that the cylindrical lens assembly 2 will not rotate and ensure the coincidence accuracy between the laser light curtain A and the 2 laser points B; The overall structure is easy to implement, the adjustment process is simple and fast, with high efficiency and accurate adjustment accuracy.

[0041] The light source emission section 1-1 of this embodiment includes a laser tube 1-1a and a collimating lens 1-1b that are coaxially arranged in sequence along the main optical path direction. In any light outlet hole 1-23 of this embodiment, a diaphragm 1-230 is coaxially arranged. The axes of the 2 third adjustment through holes 2-12 are both perpendicular to the axis of the laser point light source assembly 1. The first adjustment screw 2-120 can be selected as a screw.

[0042] Specifically, the laser point light source assembly 1 includes a light source emission section 1-1, an orthogonal precision adjustment section 1-2, and a limit fixing section 1-3 that are coaxially connected in sequence along the main optical path direction. The cylindrical mirror assembly 2 coaxially includes a base 2-1 and a cylindrical mirror fixing base 2-2 in sequence along the main optical path direction. The limit fixing section 1-3 is a hollow cylindrical structure with openings at both ends. Two limit adjustment surfaces 1-35 are located on the outer periphery of the limit fixing section 1-3. A limit groove 2-10 matching the structure of the limit fixing section 1-3 is provided on the inner bottom of the base 2-1, and two third adjustment through holes 2-12 are located on the side wall of the base 2-1.

[0043] Its function is: through the cooperation of the limit groove 2-10 and the limit fixing section 1-3, the cylindrical mirror assembly 2 is axially and radially limited and buckled on the outer periphery of the end of the laser point light source assembly 1.

[0044] Specifically, two centrally symmetric third fixing through holes 2-11 are provided on the base 2-1. The axes of the third fixing through holes 2-11 are parallel to the axis of the cylindrical mirror assembly 2. Two first fixing holes 1-31 that coincide with the axes of the two third fixing through holes 2-11 are provided on the limit fixing section 1-3. It also includes two second fixing screws 2-110. Any one of the second fixing screws 2-110 sequentially passes through any one of the third fixing through holes 2-11 and the first fixing hole 1-31. The second fixing screw 2-110 is threadedly connected to the first fixing hole 1-31 where it is located, and the second fixing screw 2-110 has a clearance fit with the third fixing through hole 2-11 where it is located.

[0045] Its function is: to buckle the cylindrical mirror assembly 2 on the end of the laser point light source assembly 1. The two second fixing screws 2-110 are respectively passed through the two third fixing through holes 2-11 and pre-connected to the two first fixing holes 1-31 respectively. The second fixing screw 2-110 has a clearance fit with the third fixing through hole 2-11 where it is located, so that when the first adjustment screw 2-120 is slightly rotated and adjusted, the cylindrical mirror assembly 2 can be slightly rotated until the two laser points B are accurately coincident with both sides of the laser light curtain A. Then, the two second fixing screws 2-110 are tightened to completely lock the laser point light source assembly 1 and the cylindrical mirror assembly 2, ensuring that the cylindrical mirror assembly 2 will not rotate and ensuring the coincidence accuracy between the laser light curtain A and the two laser points B.

[0046] The second fixing screw 2-110 in this embodiment can be selected as a screw.

[0047] On the orthogonal precision adjustment section 1-2 of this embodiment, a set of first adjustment saw slots and a set of second adjustment saw slots are provided along the main optical path direction; a set of first adjustment saw slots includes 2 first saw slots 1-21 symmetrically distributed along the diameter of the orthogonal precision adjustment section 1-2, and a set of second adjustment saw slots includes 2 second saw slots 1-22 symmetrically distributed along the diameter of the orthogonal precision adjustment section 1-2, and the symmetry axes of the 2 first saw slots 1-21 are perpendicular to the symmetry axes of the 2 second saw slots 1-22; it also includes 2 second adjustment screws 1-330 symmetrically arranged along the center. The second adjustment screws 1-330 pass through the second adjustment through holes 1-33 and sequentially pass through the second saw slots 1-22 and the first saw slots 1-21. There are also 2 threaded holes respectively thread-matched with the 2 second adjustment screws 1-330 between the second saw slots 1-22 and the first saw slots 1-21. The second adjustment screws 1-330 are thread-mated with the second adjustment through holes 1-33, and the extended ends of the second adjustment screws 1-330 are in limit contact with the supporting surface below the first saw slots 1-21;

[0048] It also includes 2 third adjustment screws 1-320 symmetrically arranged along the center. The third adjustment screws 1-320 pass through the first adjustment through holes 1-32 and pass through the second saw slots 1-22. The third adjustment screws 1-320 are thread-mated with the first adjustment through holes 1-32, and the extended ends of the third adjustment screws 1-320 are in limit contact with the supporting surface below the second saw slots 1-22;

[0049] Its function is: through the cooperation of the second adjustment screws 1-330, the third adjustment screws 1-320, the first saw slots 1-21 and the second saw slots 1-22, the adjustment of the orthogonal precision and coplanar precision between the middle laser beam and the 2 split light beams is realized. After the orthogonal precision and coplanar precision are adjusted, the extended ends of the 2 second adjustment screws 1-330 are pressed against the supporting surface below the first saw slots 1-21, and at the same time, the extended ends of the 2 third adjustment screws 1-320 are pressed against the supporting surface below the second saw slots 1-22.

[0050] The second adjustment screws 1-330 and the third adjustment screws 1-320 of this embodiment can both be selected as screws.

[0051] The beam splitting prism assembly 3 of this embodiment includes a beam splitting support frame 3-0 fixed within the limit fixing section 1-3. A Dove prism 3-1 is fixedly installed on the beam splitting support frame 3-0. After the laser beam irradiates on the Dove prism 3-1, it is divided into three partial beams. Among them, the beam in the middle continues to irradiate on the cylindrical mirror 2-21 along the main optical path, and after passing through the transmission, refraction, and reflection of the cylindrical mirror 2-21, a laser light curtain is formed. In addition, the two split beams reflected by the Dove prism 3-1 are perpendicular to the main optical path and their axes coincide with each other. A second fixing through hole 1-34 is provided on the side wall of the orthogonal precision adjustment section 1-2. A positioning groove 3-2 is provided at the corresponding position of the side wall of the beam splitting support frame 3-0 and the second fixing through hole 1-34. The first fixing screw 1-340 passes through the second fixing through hole 1-34 in sequence and abuts against the positioning groove 3-2. Moreover, the fixing screw 1-340 is threadedly connected to the second fixing through hole 1-34. The end of the first fixing screw 1-340 is correspondingly locked and fixed with the positioning groove 3-2 on the circumferential surface of the beam splitting support frame 3-0, so that the beam splitting support frame 3-0 is fixed within the limit fixing section 1-3. The first fixing screw 1-340 can be selected as a screw.

[0052] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0053] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0054] Furthermore, any combination can be made among the various different embodiments disclosed in this solution, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content invented by the present disclosure.

Claims

1. A laser dot line module with dots at both ends of the line, characterized in that, It includes a laser point light source assembly (1) and a cylindrical lens assembly (2) connected coaxially. The cylindrical lens assembly (2) includes a cylindrical lens (2-21) arranged perpendicular to its axis. A beam splitting prism assembly (3) is also coaxially arranged inside the laser point light source assembly (1). The laser point light source assembly (1) is provided with light output holes (1-23) on the two-way side beam splitting optical paths of the beam splitting prism assembly (3). The axes of the two light output holes (1-23) coincide and are perpendicular to the axis of the cylindrical lens (2-21). The cylindrical lens assembly (2) is axially limited and buckled on the outer periphery of the end of the laser point light source assembly (1). The circumferential contact surface between the cylindrical lens assembly (2) and the laser point light source assembly (1) does not contact the light output hole (1-23). Two third adjustment through holes (2-12) are provided on one side of the circumferential contact surface between the cylindrical lens assembly (2) and the laser point light source assembly (1). The axes of the two third adjustment through holes (2-12) are located on both sides of the axis of the laser point light source assembly (1). The outer periphery of the end of the laser point light source assembly (1) is provided with a limit adjustment surface (1-35) corresponding to the positions of the two third adjustment through holes (2-12). It also includes two first adjustment screws (2-120) respectively penetrating into the two third adjustment through holes (2-12) from the outside to the inside. Any one of the first adjustment screws (2-120) is threadedly engaged with the corresponding third adjustment through hole (2-12) and is in limit contact with the corresponding limit adjustment surface (1-35).

2. The laser dot line module with dot-shaped ends on both sides as described in claim 1, wherein, The axes of the two third adjustment through holes (2-12) are both perpendicular to the axis of the laser point light source assembly (1).

3. The laser dot line module with dotting at both side line ends as claimed in claim 1 or 2, wherein, The laser point light source assembly (1) includes a light source emission section (1-1), an orthogonal precision adjustment section (1-2), and a limit fixing section (1-3) coaxially connected in sequence along the main optical path direction. The cylindrical lens assembly (2) coaxially includes a base (2-1) and a cylindrical lens fixing seat (2-2) in sequence along the main optical path direction. The limit fixing section (1-3) is a hollow cylindrical structure with openings at both ends. Two limit adjustment surfaces (1-35) are located on the outer periphery of the limit fixing section (1-3). The inner bottom of the base (2-1) is provided with a limit groove (2-10) matching the structure of the limit fixing section (1-3). Two third adjustment through holes (2-12) are located on the side wall of the base (2-1).

4. The laser dot line module with dot-shaped ends on both sides as described in claim 3, characterized in that, Two third fixing through holes (2-11) that are centrosymmetric are provided on the base (2-1). The axes of the third fixing through holes (2-11) are parallel to the axis of the cylindrical lens assembly (2). Two first fixing holes (1-31) that coincide with the axes of the two third fixing through holes (2-11) are provided on the limit fixing section (1-3). It also includes two second fixing screws (2-110). Any one of the second fixing screws (2-110) sequentially penetrates into any one of the third fixing through holes (2-11) and the first fixing hole (1-31). The second fixing screw (2-110) is threadedly connected to the corresponding first fixing hole (1-31), and the second fixing screw (2-110) has a clearance fit with the corresponding third fixing through hole (2-11).

5. The laser dot-line module with dot-shaped ends on both sides as described in claim 4, wherein On the orthogonal precision adjustment section (1-2), a set of first adjustment saw slots and a set of second adjustment saw slots are provided along the main optical path direction; the set of first adjustment saw slots includes 2 first saw slots (1-21) symmetrically distributed along the diameter of the orthogonal precision adjustment section (1-2), the set of second adjustment saw slots includes 2 second saw slots (1-22) symmetrically distributed along the diameter of the orthogonal precision adjustment section (1-2), and the symmetry axes of the 2 first saw slots (1-21) are perpendicular to the symmetry axes of the 2 second saw slots (1-22); It further includes 2 second adjustment screws (1-330) that are centrosymmetric. The second adjustment screws (1-330) sequentially pass through the second saw slots (1-22) and the first saw slots (1-21) from the end of the limit fixing section (1-3), and the extended ends of the second adjustment screws (1-330) are in limit contact with the support surface below the first saw slots (1-21); It further includes 2 third adjustment screws (1-320) that are centrosymmetric. The third adjustment screws (1-320) pass through the second saw slots (1-22) from the end of the limit fixing section (1-3), and the extended ends of the third adjustment screws (1-320) are in limit contact with the support surface below the second saw slots (1-22).

6. The laser dot line module with dotting at both side line tails according to claim 4, wherein The beam splitting prism assembly (3) includes a beam splitting support frame (3-0) fixed in the limit fixing section (1-3), and a Dove prism (3-1) is fixedly arranged on the beam splitting support frame (3-0).

7. The laser dot line module with dot-shaped ends on both sides as described in claim 6, wherein, It further includes a first fixing screw (1-340) that radially penetrates into the limit fixing section (1-3) and the beam splitting support frame (3-0) from the outside of the limit fixing section (1-3).

8. The laser dot line module with dotting at both side line ends as claimed in claim 4, wherein, A diaphragm (1-230) is coaxially arranged in any of the light output holes (1-23).

9. The laser dot line module with dot at both sides of the line tail as claimed in claim 3, wherein, The light source emission section (1-1) includes a laser tube (1-1a) and a collimating lens (1-1b) that are coaxially arranged in sequence along the main optical path direction.

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