Laser

Abstract

The utility model is suitable for the technical field of lasers, and provides a laser which comprises a shell, a first pumping source, a first driving unit, a second driving unit, a first galvanometer and a second galvanometer, and the first pumping source, the first driving unit and the second driving unit are all arranged in the shell; the first galvanometer is arranged at the output end of the first driving unit, the first driving unit is used for driving the first galvanometer to rotate, and the first galvanometer is located on a light path of the laser beam; the rotation center line of the first galvanometer and the plane where the first direction and the second direction are located form an angle of 13-17 degrees. The second galvanometer is arranged at the output end of the second driving unit, the second driving unit is used for driving the second galvanometer to rotate, the second galvanometer is located on the light path of the laser beam, and the rotating center line of the second galvanometer is parallel to the first direction; the first direction is perpendicular to the second direction. According to the embodiment of the invention, the distance between the first galvanometer and the second galvanometer can be reduced, so that the size of the laser is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of lasers, and in particular to a laser. Background Art

[0002] Printed patterns in the fields of logistics, advertising, household manual production, education, etc. often need to be customized. In order to facilitate the printing of these patterns through laser marking, handheld lasers have gradually appeared on the market.

[0003] At present, the handheld lasers on the market are large in size and inconvenient for users to use. Utility Model Content

[0004] The embodiment of the present application provides a laser that can reduce the size of a handheld laser.

[0005] In a first aspect, an embodiment of the present application provides a laser, the laser comprising:

[0006] shell;

[0007] a first pump source, the first pump source being disposed in the housing and being used for emitting a laser beam;

[0008] a first driving unit, wherein the first driving unit is disposed in the housing;

[0009] A first galvanometer, wherein the first galvanometer is disposed at an output end of the first driving unit, the first driving unit is used to drive the first galvanometer to rotate, the first galvanometer is located on the optical path of the laser beam, and a rotation center line of the first galvanometer forms an angle of 13°-17° with a plane where the first direction and the second direction are located;

[0010] a second driving unit, the second driving unit being disposed in the housing;

[0011] a second galvanometer, wherein the second galvanometer is disposed at an output end of the second driving unit, the second driving unit is used to drive the second galvanometer to rotate, the second galvanometer is located on an optical path of the laser beam, and a rotation center line of the second galvanometer is parallel to the first direction;

[0012] The laser beam is reflected by the first galvanometer and the second galvanometer and then emitted from the housing along a second direction, and the first direction is perpendicular to the second direction.

[0013] In some possible implementations of the first aspect, the first pump source includes:

[0014] a semiconductor crystal, wherein the semiconductor crystal is disposed in the housing;

[0015] A full-reflection lens, wherein the full-reflection lens is arranged in the housing;

[0016] a saturable absorber, the saturable absorber being disposed in the housing;

[0017] A half-reflective mirror is arranged in the shell, and the semiconductor crystal, the full-reflective mirror, the saturable absorber and the half-reflective mirror are arranged in sequence along the same direction.

[0018] In some possible implementations of the first aspect, the laser further includes:

[0019] a second pump source, the second pump source being disposed in the housing, the second pump source being used to emit a laser beam, the wavelength of the laser beam emitted by the second pump source being smaller than the wavelength of the laser beam emitted by the first pump source;

[0020] A reflector group is arranged in the housing and is used to reflect the laser beams emitted by the first pump source and the second pump source onto the same optical path.

[0021] In some possible implementations of the first aspect, the position of the reflector group is adjustable to adjust the direction of the laser beam reflected by the reflector group.

[0022] In some possible implementations of the first aspect, the reflector assembly includes:

[0023] A first mirror seat, wherein the first mirror seat is disposed in the housing, and a position of the first mirror seat is adjustable along the first direction;

[0024] a first reflector, wherein the first reflector is rotatably disposed on the first mirror seat, a rotation center line of the first reflector is parallel to the second direction, and a light emitting end of the first pump source faces the first reflector;

[0025] A second mirror seat, the second mirror seat is disposed in the housing, and the position of the second mirror seat is adjustable along the second direction;

[0026] A second reflector, wherein the second reflector is rotatably disposed on the second mirror seat, a rotation center line of the second reflector is parallel to the second direction, a light output end of the second pump source faces the second reflector, and a reflection surface of the second reflector faces the first reflector.

[0027] In some possible implementations of the first aspect, the laser further includes:

[0028] A fixed focus frame is arranged on the housing.

[0029] In some possible implementations of the first aspect, the fixed focus frame is cylindrical in shape, the diameter of the fixed focus frame gradually increases, the smaller diameter end of the fixed focus frame is detachably disposed on the housing, and the laser beams reflected by the first galvanometer and the second galvanometer are emitted from the fixed focus frame.

[0030] In some possible implementations of the first aspect, the laser further includes:

[0031] A gasket, the gasket being arranged on an end surface of an end with a larger diameter of the fixed focus frame;

[0032] A fixing piece is detachably arranged on an end surface of the end with a larger diameter of the fixed focus frame to fix the gasket to the fixed focus frame.

[0033] In some possible implementations of the first aspect, a threaded hole is provided on the end face of the larger diameter end of the fixed focus frame, a through hole is provided on the gasket, and the fixing piece is passed through the through hole and the threaded hole to fix the gasket to the fixed focus frame.

[0034] In some possible implementations of the first aspect, the laser further includes:

[0035] A dust extraction unit is arranged on the fixed focus frame.

[0036] In some possible implementations of the first aspect, the laser further includes:

[0037] A detection sensor, the detection sensor is arranged on the housing, and the detection sensor is used to detect whether there is a workpiece in the light emitting direction of the housing; and / or

[0038] A display screen is arranged on the housing.

[0039] In some possible implementations of the first aspect, a handle is formed on the shell.

[0040] In some possible implementations of the first aspect, a rotation centerline of the first galvanometer forms an angle of 15° with a plane where the first direction and the second direction are located.

[0041] In the laser provided in the embodiment of the present application, the first pump source is used to emit a laser beam, and the first galvanometer and the second galvanometer are both located on the optical path of the laser beam, so that the laser beam emitted by the first pump source can reach the first galvanometer and the second galvanometer; the laser beam is emitted from the housing after being reflected by the first galvanometer and the second galvanometer, thereby marking the workpiece; the first galvanometer is arranged at the output end of the first driving unit to drive the first galvanometer to rotate through the first driving unit, and the second galvanometer is arranged at the output end of the second driving unit to drive the second galvanometer to rotate through the second driving unit, thereby adjusting the angle at which the laser beam is emitted from the housing; since the rotation center line of the first galvanometer forms an angle of 13°-17° with the plane where the first direction and the second direction are located, and the rotation center line of the second galvanometer is parallel to the first direction, the distance between the first galvanometer and the second galvanometer can be reduced on the basis of satisfying the adjustment of the angle at which the laser beam is emitted from the housing, thereby reducing the volume of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 This is a schematic diagram of the structure of an embodiment of the laser of the present application;

[0044] Figure 2 This is a schematic diagram of the structure of another embodiment of the laser of the present application;

[0045] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0046] Description of Figure Numbers:

[0047] 1. Housing; 2. First pump source; 3. First driving unit; 4. First galvanometer; 5. Second driving unit; 6. Second galvanometer; 7. Second pump source; 8. Reflector group; 81. First mirror holder; 82. First reflector; 83. Second mirror holder; 84. Second reflector; 9. Focusing frame; 10. Gasket; 20. Fixing ring; 30. Dust extraction unit; 40. Display screen; 50. Handle; 60. Detection sensor.

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0051] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] It should be understood that the term “and / or” used in the specification and appended claims of this application refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] The embodiment of the present application provides a laser for solving the technical problem of large size of handheld lasers.

[0055] In the embodiments of the present application, Figure 1 and Figure 2As shown, the laser includes a housing 1, a first pump source 2, a first drive unit 3, a second drive unit 5, a first galvanometer 4, and a second galvanometer 6. The first pump source 2, the first drive unit 3, and the second drive unit 5 are all arranged in the housing 1. The first pump source 2 is used to emit a laser beam. The first galvanometer 4 is arranged at the output end of the first drive unit 3, and the first drive unit 3 is used to drive the first galvanometer 4 to rotate, and the first galvanometer 4 is located on the optical path of the laser beam. The rotation center line of the first galvanometer 4 forms an angle of 13°-17° with the plane where the first direction and the second direction are located. The second galvanometer 6 is arranged at the output end of the second drive unit 5, and the second drive unit 5 is used to drive the second galvanometer 6 to rotate, and the second galvanometer 6 is located on the optical path of the laser beam, and the rotation center line of the second galvanometer 6 is parallel to the first direction.

[0056] The laser beam is reflected by the first galvanometer 4 and the second galvanometer 6 and then emitted from the housing 1 along the second direction, and the first direction is perpendicular to the second direction.

[0057] like Figure 2 As shown, the first direction is parallel to the X direction, and the second direction is parallel to the Y direction.

[0058] In this embodiment, if Figure 1 and Figure 2 As shown, a handle 50 is formed on the housing 1 to facilitate the user to hold it with his hand, so that the user can carry the laser to mark workpieces such as posters and plastic signs.

[0059] A focusing mirror may also be provided on the housing 1 , so that the laser beam reflected by the first galvanometer mirror 4 and the second galvanometer mirror 6 can pass through the focusing mirror along the second direction, thereby focusing the laser beam through the focusing mirror.

[0060] The first pump source 2 of the embodiment of the present application is used to emit a laser beam, and the first galvanometer 4 and the second galvanometer 6 are both located on the optical path of the laser beam, so the laser beam emitted by the first pump source 2 can reach the first galvanometer 4 and the second galvanometer 6; the laser beam is emitted from the housing 1 after being reflected by the first galvanometer 4 and the second galvanometer 6, thereby marking the workpiece; the first galvanometer 4 is arranged at the output end of the first driving unit 3 to drive the first galvanometer 4 to rotate through the first driving unit 3, and the second galvanometer 6 is arranged at the output end of the second driving unit 5 to drive the second galvanometer 6 to rotate through the second driving unit 5, thereby adjusting the angle at which the laser beam is emitted from the housing 1; since the rotation center line of the first galvanometer 4 is at an angle of 13°-17° to the plane where the first direction and the second direction are located, and the rotation center line of the second galvanometer 6 is parallel to the first direction, the distance between the first galvanometer 4 and the second galvanometer 6 can be reduced on the basis of satisfying the adjustment of the angle at which the laser beam is emitted from the housing 1, thereby reducing the volume of the laser.

[0061] In one embodiment, the first pump source 2 includes a semiconductor crystal, a full reflection mirror, a saturable absorber and a half reflection mirror, and the semiconductor crystal, the full reflection mirror, the saturable absorber and the half reflection mirror are all arranged in the housing 1. The semiconductor crystal, the full reflection mirror, the saturable absorber and the half reflection mirror are arranged in sequence along the same direction.

[0062] The semiconductor crystal is used to emit electrons to the full-reflection mirror, and the full-reflection mirror and the half-reflection mirror can form a resonant cavity, so that the electrons emitted by the semiconductor crystal are constantly reflected in the resonant cavity, and the electrons are also passing through the saturable absorber. In the process of electrons passing through the saturable absorber, more electrons can be generated. After the saturable absorber absorbs enough electrons and reaches the threshold, the electron activity in the resonant cavity is greatly amplified, thereby generating a pulsed laser.

[0063] By amplifying the laser power through a full reflection mirror, a saturable absorber and a half reflection mirror, the volume of the first pump source 2 can be reduced.

[0064] In one embodiment, if Figure 2 As shown, the laser further includes a second pump source 7 and a reflector group 8, both of which are disposed in the housing 1. The second pump source 7 is used to emit a laser beam, and the wavelength of the laser beam emitted by the second pump source 7 is smaller than the wavelength of the laser beam emitted by the first pump source 2. The reflector group 8 is used to reflect the laser beams emitted by the first pump source 2 and the second pump source 7 onto the same optical path.

[0065] Since the wavelength of the laser beam emitted by the second pump source 7 is smaller than the wavelength of the laser beam emitted by the first pump source 2, laser beams with different wavelengths can be emitted from the housing 1, thereby marking workpieces of different materials, thereby improving the applicability of the laser. The reflector group 8 is used to reflect the laser beams emitted by the first pump source 2 and the second pump source 7 onto the same optical path, so that the laser beam reflected by the reflector group 8 can reach the first galvanometer 4 and the second galvanometer 6, and then be emitted from the housing 1 after being reflected by the first galvanometer 4 and the second galvanometer 6.

[0066] In one embodiment, the first pump source 2 may emit a laser beam with a wavelength of 1064 nm, and the second pump source 7 may emit a laser beam with a wavelength of 455 nm.

[0067] In one embodiment, if Figure 2 As shown, the position of the reflector group 8 can be adjusted to adjust the direction of the laser beam reflected by the reflector group 8. By adjusting the position of the reflector group 8, the laser beams emitted by the first pump source 2 and the second pump source 7 can be located on the same optical path after passing through the reflector group 8, so as to reach the first galvanometer 4 and the second galvanometer 6. Then, the laser beams are reflected by the first galvanometer 4 and the second galvanometer 6 and emitted from the housing 1.

[0068] In one embodiment, if Figure 2 and Figure 3 As shown, the reflector group 8 includes a first mirror seat 81, a first reflector 82, a second mirror seat 83 and a second reflector 84, and the first mirror seat 81 and the second mirror seat 83 are both arranged in the housing 1. The position of the first mirror seat 81 can be adjusted along the first direction, and the first reflector 82 is rotatably arranged on the first mirror seat 81. The rotation center line of the first reflector 82 is parallel to the second direction, and the light-emitting end of the first pump source 2 faces the first reflector 82. The position of the second mirror seat 83 is adjustable along the second direction, and the second reflector 84 is rotatably arranged on the second mirror seat 83. The rotation center line of the second reflector 84 is parallel to the second direction, and the light-emitting end of the second pump source 7 faces the second reflector 84, and the reflection surface of the second reflector 84 faces the first reflector 82.

[0069] The position of the first mirror seat 81 can be adjusted along the first direction, and the first reflector 82 is rotatably disposed on the first mirror seat 81, and the rotation center line of the first reflector 82 is parallel to the second direction. Therefore, the first reflector 82 can rotate around the second direction, and the position of the first reflector 82 can also be adjusted along the first direction, so as to be used to adjust the direction of the laser beam passing through the first reflector 82.

[0070] The position of the second mirror seat 83 can be adjusted along the second direction, and the second reflector 84 is rotatably disposed on the second mirror seat 83, and the rotation center line of the second reflector 84 is parallel to the second direction. Therefore, the second reflector 84 can rotate around the second direction, and the position of the second reflector 84 can also be adjusted along the second direction, so as to be used to adjust the direction of the laser beam passing through the first reflector 82.

[0071] The light emitting end of the first pump source 2 faces the first reflector 82, so that the laser beam emitted by the first pump source 2 can pass through the first reflector 82. The light emitting end of the second pump source 7 faces the second reflector 84, so that the laser beam emitted by the second pump source 7 can be reflected by the second reflector 84.

[0072] The reflective surface of the second reflector 84 faces the first reflector 82, so that the laser beam emitted by the second pump source 7 can reach the first reflector 82 after being reflected by the second reflector 84, and then be reflected by the first reflector 82. By adjusting the positions of the first reflector 82 and the second reflector 84, the laser beam emitted by the first pump source 2 after passing through the first reflector 82 can overlap with the laser beam emitted by the second pump source 7 after being reflected by the first reflector 82 and the second reflector 84.

[0073] In one embodiment, if Figure 1 and Figure 2As shown, the laser also includes a focus frame 9, which is arranged on the housing 1. By arranging the focus frame 9, the stability of the distance between the laser and the workpiece can be improved when the user uses the laser, so that the focus of the laser beam is irradiated on the workpiece, thereby marking the workpiece.

[0074] When marking a workpiece, the focus holder 9 can be placed on a support such as the ground or a stage to maintain the high stability of the laser so that the focus of the laser beam can be fixed on the workpiece for marking.

[0075] In one embodiment, if Figure 1 and Figure 2 As shown, the focus frame 9 is in the shape of a cylinder, and the diameter of the focus frame 9 gradually increases. The end with a smaller diameter of the focus frame 9 is detachably arranged on the housing 1, and the laser beam reflected by the first galvanometer 4 and the second galvanometer 6 is emitted from the focus frame 9. The focus frame 9 is in the shape of a cylinder, which can isolate the laser beam to prevent the laser beam from damaging foreign objects. When marking a workpiece, the focus frame 9 can be installed on the housing 1. When marking is not required, the focus frame 9 can be removed from the housing 1 to reduce the volume occupied by the laser.

[0076] In one embodiment, if Figure 1 and Figure 2 As shown, the laser further includes a gasket 10 and a fixing member, wherein the gasket 10 is arranged on the end surface of the larger diameter end of the focus frame 9. The fixing member is detachably arranged on the end surface of the larger diameter end of the focus frame 9 to fix the gasket 10 to the focus frame 9.

[0077] When the focus frame 9 is mounted on the housing 1, errors may occur. Therefore, the height of the focus frame 9 can be adjusted by stacking a gasket 10 on the end surface of the larger diameter end of the focus frame 9 so that the focus of the laser beam can be fixed on the workpiece. Then, the gasket 10 is fixed to the focus frame 9 by a fixing member to prevent the gasket 10 from being displaced relative to the focus frame 9 and affecting the height of the focus frame 9.

[0078] In one embodiment, a threaded hole is provided on the end surface of the larger diameter end of the focus frame 9, a through hole is provided on the gasket 10, and a fixing member is passed through the through hole and the threaded hole to fix the gasket 10 to the focus frame 9. By passing the fixing member through the through hole and the threaded hole to fix the gasket 10 to the focus frame 9, the stability of fixing the gasket 10 can be improved. The fixing member can be a screw.

[0079] In one embodiment, if Figure 1 and Figure 2As shown, the laser further includes a fixing ring 20, which is provided with a fixing hole. The fixing ring 20 is provided on the side of the gasket 10 away from the fixed focus frame 9, and the fixing parts are sequentially penetrated through the fixing hole, the through hole and the threaded hole to fix the gasket 10 to the fixed focus frame 9. By providing the fixing ring 20, the stability of the fixed focus frame 9 when placed on a support can be improved.

[0080] In one embodiment, the laser further includes an anti-skid pad, which is disposed on a side of the fixing ring 20 away from the gasket 10 to prevent slipping when the focusing frame 9 is placed on a support.

[0081] In one embodiment, if Figure 1 and Figure 2 As shown, the laser further includes a dust extraction unit 30, which is disposed on the focus frame 9, and is used to extract dust from the focus frame 9. The dust extraction unit 30 may include a fan.

[0082] In one embodiment, if Figure 2 As shown, the laser also includes a detection sensor 60, which is arranged on the housing 1. The detection sensor 60 is used to detect whether there is a workpiece in the light emitting direction of the housing 1. When the detection sensor 60 detects the workpiece, the laser emits light normally to mark the workpiece. When the detection sensor 60 does not detect the workpiece, the laser stops emitting light to avoid the risk of accidental exposure of the laser to the user.

[0083] In one embodiment, if Figure 1 As shown, the laser further includes a display screen 40 , which is disposed on the housing 1 , and can be used to display data such as laser parameters.

[0084] In one embodiment, if Figure 1 As shown, the rotation center line of the first galvanometer 4 forms an angle of 15° with the plane where the first direction and the second direction are located, so as to further reduce the distance between the first galvanometer 4 and the second galvanometer 6 .

[0085] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A laser, characterized in that: The laser comprises: shell; a first pump source, the first pump source being disposed in the housing and being used for emitting a laser beam; a first driving unit, wherein the first driving unit is disposed in the housing; A first galvanometer, wherein the first galvanometer is disposed at an output end of the first driving unit, the first driving unit is used to drive the first galvanometer to rotate, the first galvanometer is located on the optical path of the laser beam, and a rotation center line of the first galvanometer forms an angle of 13°-17° with a plane where the first direction and the second direction are located; a second driving unit, the second driving unit being disposed in the housing; a second galvanometer, wherein the second galvanometer is disposed at an output end of the second driving unit, the second driving unit is used to drive the second galvanometer to rotate, the second galvanometer is located on an optical path of the laser beam, and a rotation center line of the second galvanometer is parallel to the first direction; The laser beam is reflected by the first galvanometer and the second galvanometer and then emitted from the housing along a second direction, and the first direction is perpendicular to the second direction.

2. The laser according to claim 1, characterized in that The first pump source comprises: a semiconductor crystal, wherein the semiconductor crystal is disposed in the housing; A full-reflection lens, wherein the full-reflection lens is arranged in the housing; a saturable absorber, the saturable absorber being disposed in the housing; A half-reflective mirror is arranged in the shell, and the semiconductor crystal, the full-reflective mirror, the saturable absorber and the half-reflective mirror are arranged in sequence along the same direction.

3. The laser according to claim 1, characterized in that The laser also includes: a second pump source, the second pump source being disposed in the housing, the second pump source being used to emit a laser beam, the wavelength of the laser beam emitted by the second pump source being smaller than the wavelength of the laser beam emitted by the first pump source; A reflector group is arranged in the housing and is used to reflect the laser beams emitted by the first pump source and the second pump source onto the same optical path.

4. The laser according to claim 3, characterized in that The position of the reflector group is adjustable to adjust the direction of the laser beam reflected by the reflector group.

5. The laser according to claim 4, characterized in that The reflector assembly comprises: A first mirror seat, wherein the first mirror seat is disposed in the housing, and a position of the first mirror seat is adjustable along the first direction; a first reflector, wherein the first reflector is rotatably disposed on the first mirror seat, a rotation center line of the first reflector is parallel to the second direction, and a light emitting end of the first pump source faces the first reflector; A second mirror seat, the second mirror seat is disposed in the housing, and the position of the second mirror seat is adjustable along the second direction; A second reflector, wherein the second reflector is rotatably disposed on the second mirror seat, a rotation center line of the second reflector is parallel to the second direction, a light output end of the second pump source faces the second reflector, and a reflection surface of the second reflector faces the first reflector.

6. The laser according to claim 1, characterized in that The laser also includes: A fixed focus frame is arranged on the housing.

7. The laser according to claim 6, characterized in that The focus frame is cylindrical in shape, the diameter of the focus frame gradually increases, the end of the focus frame with a smaller diameter is detachably arranged on the housing, and the laser beams reflected by the first galvanometer and the second galvanometer are emitted from the focus frame.

8. The laser according to claim 7, characterized in that The laser also includes: A gasket, the gasket being arranged on an end surface of an end with a larger diameter of the fixed focus frame; A fixing piece is detachably arranged on an end surface of the end with a larger diameter of the fixed focus frame to fix the gasket to the fixed focus frame.

9. The laser according to claim 8, characterized in that A threaded hole is arranged on the end surface of the larger diameter end of the fixed focus frame, a through hole is arranged on the gasket, and the fixing member is passed through the through hole and the threaded hole to fix the gasket to the fixed focus frame.

10. The laser according to claim 7, characterized in that The laser also includes: A dust extraction unit is arranged on the fixed focus frame.

11. The laser according to claim 1, characterized in that The laser also includes: A detection sensor, the detection sensor is arranged on the housing, and the detection sensor is used to detect whether there is a workpiece in the light emitting direction of the housing; and / or A display screen is arranged on the housing.

12. The laser according to claim 1, characterized in that A handle is formed on the shell.

13. The laser according to claim 1, characterized in that A rotation center line of the first galvanometer forms an angle of 15° with a plane where the first direction and the second direction are located.

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