Indicating light leading-in laser output device

Abstract

The utility model relates to the field of laser output devices, in particular to an indicating light introduction laser output device. The utility model provides an indicating light guiding-in laser output device. The indicating light guiding-in laser output device comprises a first laser output module and a second laser output module. The first laser output module comprises a first laser generation unit and a first shell, and the first laser generation unit generates first laser; the second laser module comprises a second laser generating unit, a second shell, a laser adjusting unit and an output optical fiber. The second laser generating unit generates second laser. And the first shell is detachably connected with the second shell through a bolt or an optical fiber patch cord, so that the first laser module or the second laser module can be conveniently replaced according to requirements, and the maintenance cost of the laser output device is reduced. The first laser and the second laser are adjusted by the laser adjusting unit and then coupled into the output optical fiber, optical fiber beam combination is not needed, and the manufacturing cost of the laser output device is reduced.

Description

Technical Field

[0001] The utility model relates to the field of laser output devices, in particular to a laser output device for introducing indication light. Background Art

[0002] Infrared lasers can be used for laser marking, laser surface roughening, laser surface modification, etc. They are the most widely used lasers in the field of material processing. The wavelength of infrared lasers is outside the visible light band. When using infrared lasers to perform surface treatment on materials, the trajectory of the laser cannot be identified by the human eye. In the prior art, visible light is introduced into the optical path as an indicator light to facilitate the human eye to identify the trajectory of the laser. Currently, fiber beam combining technology is used or a red light chip is packaged in a laser to obtain a laser beam containing red light. However, the fiber beam combining method has a high manufacturing cost, and the red light chip packaging method makes it difficult to replace the red light output module inside the laser, and the maintenance cost is high. Utility Model Content

[0003] In order to solve the above problems, it is necessary to provide an indicator light introduction laser output device to facilitate the replacement of the indicator light output module and reduce the manufacturing and maintenance costs of the device.

[0004] The present application provides an indication light introduction laser output device, including a first laser output module and a second laser output module, the first laser output module including a first laser generating unit and a first shell, the first laser generating unit is arranged in the first shell, the first laser generating unit generates red light, the second laser output module including a second laser generating unit and a second shell, the second laser generating unit is arranged in the second shell, and is used to generate infrared laser, the side wall of the first shell is provided with a first light exit hole, the second shell is provided with a through hole and a second light exit hole, the infrared laser is emitted from the laser output device through the second light exit hole, the red light passes through the first light exit hole and the through hole in turn into the second shell, and then is emitted from the laser output device through the second light exit hole. Both the red light and the infrared laser are emitted from the laser output device from the second light exit hole, without the need for optical fiber beam combining, which effectively reduces the manufacturing cost.

[0005] In some embodiments, the first shell includes a main shell, a first protrusion and a second protrusion, the first light exit hole is located on a side wall of the main shell, the first protrusion and the second protrusion are formed by extending the side wall provided with the first light exit hole in two opposite directions, the first protrusion and the second protrusion are both provided with bolt holes, the bolts are passed through the bolt holes, and the first protrusion and the second protrusion are pressed against the second shell, so that the first shell and the second shell are connected to each other and the first light exit hole and the through hole are connected to each other, the first shell and the second shell can be separated or connected according to needs, so as to facilitate the replacement of the second laser module and reduce maintenance costs.

[0006] In some embodiments, the first housing is connected to a fiber jumper, which includes a first connector, a fiber segment, and a second connector. One end of the fiber segment is connected to the first end of the first connector, and the other end is connected to the first end of the second connector. The second end of the first connector is aligned with the first light exit hole and is detachably connected to the first housing. The second end of the second connector is aligned with the through hole and is detachably connected to the second housing. The first housing and the second housing are connected by a fiber jumper, and red light is introduced into the second housing through the fiber jumper. The position of the first housing can be flexibly placed according to needs.

[0007] In some embodiments, the second light exit hole and the through hole are respectively located on two opposite side walls of the second shell, and the line connecting the centers of the through hole and the second light exit hole is perpendicular to the two side walls where the through hole and the second light exit hole are located, so as to facilitate the passage of red light.

[0008] In some embodiments, the second laser output module also includes a laser adjustment unit and an output optical fiber. The laser adjustment unit is located in the second shell body and connected to the second shell body. The laser adjustment unit is arranged on a first axis, and the first axis is a line connecting the center of the through hole and the center of the second light output hole, so that the laser adjustment unit is located on the propagation path of the red light and the infrared laser, thereby guiding the red light and the infrared laser to the second light output hole; the output optical fiber is arranged in the second light output hole, spaced apart from the laser adjustment unit, and the output optical fiber has a receiving end face at one end close to the laser adjustment unit for receiving the red light and the infrared laser.

[0009] In some embodiments, the laser adjustment unit includes a dichroic mirror, a fast-axis focusing lens, and a slow-axis focusing lens. The dichroic mirror, the fast-axis focusing lens, and the slow-axis focusing lens are sequentially arranged at intervals along the direction from the through hole to the second light exit hole. The dichroic mirror is used to transmit red light and reflect infrared laser light, thereby changing the propagation direction of the infrared laser light and guiding the infrared laser light to propagate toward the second light exit hole. The red light is transmitted through the dichroic mirror and propagates toward the second light exit hole. The fast-axis focusing lens and the slow-axis focusing lens are used to focus the red light and the infrared laser light to form a light spot of uniform size.

[0010] In some embodiments, the infrared laser is emitted toward the dichroic mirror along the incident axis, and after being reflected by the dichroic mirror, it propagates along the exit axis. The incident axis has an angle with the first axis. The reflecting surface of the dichroic mirror is set according to the angle between the incident axis and the first axis so that the exit axis of the infrared laser coincides with the first axis, thereby allowing the infrared laser to propagate in the direction of the second light output hole.

[0011] In some embodiments, the focal points of the fast-axis focusing lens and the slow-axis focusing lens are both located on the receiving end surface of the output optical fiber, so that the focused light spot can be coupled into the optical fiber.

[0012] In some embodiments, the volume of the second shell is larger than that of the first shell, so as to facilitate the placement of more infrared laser chips, thereby increasing the power of the infrared laser and improving the efficiency of material surface treatment.

[0013] According to one or more embodiments of the present application, the indicator light is introduced into the laser output device, including a first laser output module and a second laser output module. The first laser output module includes a first laser generating unit and a first shell. The first laser generating unit outputs red light. The second laser output module includes a second laser generating unit, a laser adjustment unit and a second shell. The second laser generating unit outputs infrared laser. The first shell is provided with a first light output hole, the second shell is provided with a through hole and a second light output hole, and an output optical fiber is provided in the second light output hole. The red light passes through the first light output hole and the through hole, and is adjusted by the laser adjustment unit together with the infrared laser, and then coupled into the output optical fiber. There is no need to perform optical fiber combination on the red light and the infrared laser. The second laser output module that emits red light is detachably connected to the outside of the second shell through an optical fiber jumper or direct contact, so that it is easy to replace according to needs, thereby reducing manufacturing costs and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 A three-dimensional diagram of a laser output device for introducing indication light into an embodiment of the present application;

[0016] Figure 2 A cross-sectional schematic diagram of a device for introducing indicator light into a laser output according to an embodiment of the present application;

[0017] Figure 3 A schematic diagram of the positional relationship between a first housing, a second housing and an output optical fiber according to an embodiment of the present application;

[0018] Figure 4 A schematic diagram of a first shell of an embodiment of the present application;

[0019] Figure 5 This is a schematic diagram of an optical fiber jumper connecting a first shell and a second shell according to an embodiment of the present application.

[0020] Description of main components:

[0021] 1. First laser output module; 11. First laser generating unit; 12. First housing; 121. Main housing; 122. First convex block; 123. Second convex block; 13. Optical fiber jumper; 131. First connector; 132. Optical fiber segment; 133. Second connector; 2. Second laser output module; 21. Second laser generating unit; 22. Second housing; 23. Laser adjustment unit; 231. Dichroic mirror; 232. Fast axis focusing lens; 233. Slow axis focusing lens; 24. Output optical fiber; 241. Receiving end face;

[0022] 3. First light exit hole; 4. Through hole; 5. Second light exit hole; 6. Bolt hole;

[0023] A. First axis; B. Incident axis; C. Exit axis. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the purpose, technical solution and advantages of the utility model, hereinafter, the present application describes the embodiments of the utility model with reference to the accompanying drawings, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. It should be understood that these embodiments are used to explain the technical principles of the utility model, which are only exemplary and cannot be understood as limiting the technology disclosed in this application or the application and use of the technology.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of this application are only used to distinguish different objects, and do not imply or require a specific relationship or order between these objects. In addition, the term "vertical" is used to describe an ideal state between two objects. In actual production or use, the two objects may be in a state that is approximately vertical.

[0026] See also Figure 1 and Figure 2The present application provides an indication light introduction laser output device, comprising a first laser output module 1 and a second laser output module 2. The first laser output module 1 comprises a first laser generating unit 11 and a first shell 12. The first laser generating unit 11 is arranged in the first shell 12 for generating a first laser. A first light exit hole 3 is arranged on the side wall of the first shell 12. The second laser output module 2 comprises a second laser generating unit 21 and a second shell 22. The second laser generating unit 21 is arranged in the second shell 22 for generating a second laser. The second shell 22 is provided with a through hole 4 and a second light exit hole 5. The second laser is emitted from the laser output device from the second light exit hole 5. The first laser passes through the first light exit hole 3 and the through hole 4 in sequence to enter the second shell 22, and then is emitted from the laser output device through the second light exit hole 5. Both the first laser and the second laser are emitted from the laser output device from the second light exit hole 5, without the need for optical fiber beam combining, which effectively reduces the manufacturing cost. The first shell 12 and the second shell 22 are detachably connected and can be separated or assembled according to needs, which is convenient for replacing the second laser output module 2 and reduces maintenance costs.

[0027] The first laser is used as an indicator light, which is visible light visible to the human eye, and the second laser is used to process materials, which is visible light or invisible light. In order to facilitate the illustration of the implementation method, this application uses red light as the first laser and infrared laser as the second laser. It should be understood that the first laser is not limited to red light, but can also be other visible light that can be used for indication, such as green light, and the second laser is not limited to infrared laser, but can also be other lasers that can be used for surface treatment of materials, such as ultraviolet laser.

[0028] See also Figure 3 and Figure 4 In some embodiments, the first shell 12 includes a main shell 121, a first protrusion 122 and a second protrusion 123. The first light exit hole 3 is located on a side wall of the main shell 121. The side wall provided with the first light exit hole 3 extends to opposite sides to form the first protrusion 122 and the second protrusion 123 respectively. The first protrusion 122 and the second protrusion 123 are respectively provided with bolt holes 6. Bolts are passed through the bolt holes 6. The first protrusion 122 and the second protrusion 123 are pressed against the second shell 22, so that the first shell 12 and the second shell 22 are directly connected. The first light exit hole 3 and the through hole 4 are interconnected, which can increase the integrity and connection stability of the laser output device and reduce the number of parts for lightweight. Optionally, the first protrusion 122 and the second protrusion 123 are respectively provided with two bolt holes 6, a total of four bolt holes 6, and bolts are respectively passed through the four bolt holes 6, so that the connection between the first shell 12 and the second shell 22 is more stable, and the misalignment of the first light exit hole 3 and the through hole 4 is prevented.

[0029] In other embodiments, the first housing 12 and the second housing 22 may be directly connected or indirectly connected to increase the flexibility of the first housing 12. Figure 5 The first housing 12 is connected to the second housing 22 through the optical fiber jumper 13. The optical fiber jumper 13 includes a first connector 131, an optical fiber segment 132, and a second connector 133. The first connector 131 and the second connector 133 both have a first end and a second end opposite to each other. One end of the optical fiber segment 132 is connected to the first end of the first connector 131, and the other end is connected to the first end of the second connector 133. The second end of the first connector 131 is aligned with the first light exit hole 3 and plugged or screwed to the first housing 12. The second end of the second connector 133 is aligned with the through hole 4 and plugged or screwed to the second housing 22. The red light is introduced into the second housing 22 through the optical fiber jumper 13. Since the optical fiber segment 132 can be bent within a certain angle range, and the length of the optical fiber segment 132 can be set according to specific needs, the first housing 12 is not limited to one position, and the first housing 12 can be flexibly placed according to needs.

[0030] The laser output by the first laser output module 1 enters the through hole 4 after passing through the optical fiber jumper 13 or the laser output by the first laser output module 1 directly enters the through hole 4. Figure 2 The relative diameters of the first light exit hole 3, the through hole 4 and the second light exit hole 5 are not limited, but the cross-sectional areas of the three in the laser emission direction are larger than the spot areas of the red light and the infrared laser.

[0031] The second laser output module 2 also includes a laser adjustment unit 23 and an output optical fiber 24. The laser adjustment unit 23 is located in the second shell 22 and is connected to the second shell 22. The laser adjustment unit 23 is arranged on the first axis A. The first axis A is a line connecting the center of the through hole 4 and the center of the second light exit hole 5. The through hole 4 and the second light exit hole 5 are respectively located on two opposite side walls of the second shell 22. The first axis A is perpendicular to the two side walls where the through hole 4 and the second light exit hole 5 are located. The laser adjustment unit 23 is located on the propagation path of the red light and the infrared laser, so as to guide the red light and the infrared laser to the second light exit hole 5. The output optical fiber 24 is located in the second light exit hole 5 and is spaced apart from the laser adjustment unit 23. The output optical fiber 24 has a receiving end face 241 at one end close to the laser adjustment unit 23 for receiving the red light and the infrared laser.

[0032] The laser adjustment unit 23 includes a dichroic mirror 231, a fast-axis focusing lens 232, and a slow-axis focusing lens 233. The dichroic mirror 231, the fast-axis focusing lens 232, and the slow-axis focusing lens 233 are arranged in sequence along the direction from the through hole 4 to the second light exit hole 5. The dichroic mirror 231 can transmit red light, and the red light propagates toward the fast-axis focusing lens 232 after passing through the dichroic mirror 231. The infrared laser is emitted toward the dichroic mirror 231 along the incident axis B, and there is an angle between the incident axis B and the first axis A. After being reflected by the dichroic mirror 231, the infrared laser propagates toward the fast-axis focusing lens 232 along the exit axis C. The fast-axis focusing lens 232 performs fast-axis focusing on the infrared laser and the red light, and the slow-axis focusing lens 233 performs slow-axis focusing on the infrared laser and the red light, thereby forming infrared laser and red light focused light spots of uniform size.

[0033] In some embodiments, the angle between the incident axis B and the first axis A is n, and the angle between the reflection surface of the dichroic mirror 231 and the first axis A is n / 2. Optionally, the incident axis B and the first axis A are 90°, and the angle between the reflection surface of the dichroic mirror 231 and the first axis A is 45°, so as to improve space utilization and reduce the volume of the second housing 22.

[0034] In some embodiments, the focal points of the fast-axis focusing lens 232 and the slow-axis focusing lens 233 are both located on the receiving end surface 241 of the output optical fiber 24 , so that the focused light spot can be coupled into the output optical fiber 24 .

[0035] In some embodiments, red light is used as an indicator light, and its power is relatively small, and the number of red light chips corresponding to the first laser generating unit 11 is small. Infrared laser is used for material surface treatment, and its power is relatively large, and the number of infrared laser chips corresponding to the second laser generating unit 21 is large. A laser adjustment unit 23 is provided in the second housing 22, and the volume of the corresponding second housing 22 is larger than that of the first housing 12. It should be noted that the laser adjustment unit 23 is not limited to being provided in the second housing 22, and can also be provided in the first housing 12.

[0036] In summary, the present application provides an indication light introduction laser output device, including a first laser output module 1 and a second laser output module 2. The first laser module 1 includes a first laser generating unit 11 and a first shell 12. The first laser generating unit 11 outputs red light; the second laser output module 2 includes a second laser generating unit 21, a second shell 22, a laser adjustment unit 23 and an output optical fiber 24. The second laser generating unit 21 outputs infrared laser. The first shell 12 is provided with a first light exit hole 3, the second shell 22 is provided with a through hole 4 and a second light exit hole 5, and the second light exit is provided with an output optical fiber 24. The red light enters the second shell 22 from the first light exit hole 3 and the through hole 4. After the red light and the infrared laser are adjusted by the laser adjustment unit 23, they are coupled into the output optical fiber 24. The first shell 12 is pressed on the second shell 22 by bolts, or the first shell 12 is detachably connected to the second shell 22 through an optical fiber jumper 13. First, the red light and infrared laser are directly coupled into the output optical fiber 24 without the need for optical fiber combining. Second, the first shell 12 is detachably connected to the second shell 22 via an optical fiber jumper 13 or direct contact, making it easy to replace the first laser output module 1 as needed, effectively reducing the manufacturing and maintenance costs of the laser output device.

[0037] It should be understood that the above-mentioned embodiments disclosed in this application are only for the convenience of description and example, and the technical solutions obtained by those skilled in the art by simple modification or equivalent substitution of the above-mentioned embodiments should fall within the scope of protection required by this application.

Claims

1. A device for guiding light into a laser output, characterized in that: The laser output device comprises: A first laser output module, the first laser output module comprising a first laser generating unit and a first shell, the first laser generating unit is disposed in the first shell and is used to output a first laser, and a first light exit hole is disposed on a side wall of the first shell; A second laser output module, the second laser output module comprises a second laser generating unit and a second shell, the second laser generating unit is disposed in the second shell and is used to output a second laser, the wavelength of the second laser is inconsistent with that of the first laser, the second shell is detachably connected to the first shell, and a through hole and a second light exit hole are disposed on a side wall of the second shell; The first laser sequentially passes through the first light exit hole and the through hole to enter the second housing, and the first laser and the second laser are output from the second light exit hole.

2. The indicator light introduction laser output device according to claim 1, characterized in that: The first shell includes a main shell, a first protrusion and a second protrusion, the first light exit hole is located on a side wall of the main shell, the first protrusion and the second protrusion are formed by extending the side wall in two opposite directions, the first protrusion and the second protrusion are respectively provided with bolt holes, the bolt holes are used for bolts to pass through, and the bolts press the first protrusion and the second protrusion onto the second shell so that the first shell and the second shell are connected to each other and the first light exit hole and the through hole are connected to each other.

3. The indicator light introduction laser output device according to claim 1, characterized in that: The first shell is connected to a fiber optic jumper, which includes a first connector, a fiber segment, and a second connector. One end of the fiber segment is connected to the first end of the first connector, and the other end is connected to the first end of the second connector. The second end of the first connector is aligned with the first light exit hole and is detachably connected to the first shell. The second end of the second connector is aligned with the through hole and is detachably connected to the second shell.

4. The indication light introduction laser output device according to claim 2 or 3, characterized in that: The through hole and the second light exit hole are respectively located on two opposite side walls of the second housing, and a line connecting the centers of the through hole and the second light exit hole is perpendicular to the two side walls where the through hole and the second light exit hole are located.

5. The indicator light introduction laser output device according to claim 4, characterized in that: The second laser output module also includes: a laser adjustment unit, the laser adjustment unit being located in the second housing and connected to the second housing, the laser adjustment unit being arranged on a first axis, the first axis being a line connecting the center of the through hole and the center of the second light exit hole, the laser adjustment unit being used to guide the first laser and the second laser to emit toward the second light exit hole; An output optical fiber is arranged in the second light output hole and is spaced apart from the laser adjustment unit. An end of the output optical fiber close to the laser adjustment unit has a receiving end face, and the receiving end face is used to receive the first laser and the second laser.

6. The indicator light introduction laser output device according to claim 5, characterized in that: The laser adjustment unit includes a dichroic mirror, a fast-axis focusing lens and a slow-axis focusing lens. Along the direction from the through hole to the second light exit hole, the dichroic mirror, the fast-axis focusing lens and the slow-axis focusing lens are arranged in sequence at intervals. The dichroic mirror is used to transmit the first laser and reflect the second laser, and the fast-axis focusing lens and the slow-axis focusing lens are used to focus the first laser and the second laser.

7. The indicator light introduction laser output device according to claim 6, characterized in that: The second laser is emitted toward the dichroic mirror along an incident axis. After being reflected by the dichroic mirror, the second laser propagates along an emission axis. The incident axis has an angle with the first axis, and the emission axis coincides with the first axis.

8. The indicator light introduction laser output device according to claim 6, characterized in that: The focal points of the fast-axis focusing lens and the slow-axis focusing lens are both located on the receiving end surface of the output optical fiber.

9. The indicator light introduction laser output device according to claim 1, characterized in that: The first laser is red light, the second laser is infrared laser, and the volume of the first shell is smaller than that of the second shell.

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