Beam combining device and laser equipment

Abstract

The utility model discloses a beam combining device and laser equipment, relates to the laser application technical field, the beam combining device comprises a base body, an indication module and a fixing module, the base body is provided with a first channel and a second channel which are vertically arranged, the first channel is used for directly facing the light outlet of a laser, and the second channel is used for directly facing the light outlet of the laser. At least part of the side wall surface of the second channel is arranged to be a first curved surface, and a beam combiner is arranged at the junction of the first channel and the second channel; the indication module is inserted into the second channel, the end face, facing the beam combiner, of the indication module is arranged to be a second curved surface, the second curved surface is in contact with and abuts against the first curved surface, and the second curved surface and the first curved surface intersect at a circle; the fixing module is arranged on the peripheral side of the indicating module in a sleeving mode and used for locking the indicating module. According to the technical scheme, the light beam of the invisible laser and the light beam of the indicating light can be rapidly adjusted to coincide by rotating the indicating module.

Description

Technical Field

[0001] The utility model relates to the technical field of laser application, in particular to a beam combining device and laser equipment. Background Art

[0002] At present, the lasers output by the commonly used carbon dioxide lasers and fiber lasers in the market are mostly invisible lasers. Inaccurate positioning can easily cause accidental injuries to the human body and other safety issues. Therefore, a beam combining device is needed to overlap the invisible laser with the visible indicator light. Common beam combining devices are usually equipped with multiple optical adjustment frames, and the indicator light and the invisible laser are combined by loosening or tightening the screws of each optical adjustment frame. The adjustment process requires delicate operation, which not only requires skilled operating skills, but also takes a long time to adjust. Utility Model Content

[0003] The main purpose of the utility model is to provide a beam combining device, aiming to simplify the structure of the beam combining device, conveniently and quickly adjust the overlap of the indicator light and the invisible laser, thereby shortening the adjustment time.

[0004] To achieve the above-mentioned purpose, the beam combining device proposed in the utility model includes a base, an indication module and a fixing module, the base is provided with a first channel and a second channel arranged vertically, the first channel is used to be arranged opposite to the light outlet of the laser, at least part of the side wall surface of the second channel is set as a first curved surface, and a beam combining mirror is arranged at the intersection of the first channel and the second channel; the indication module is plugged into the second channel, the end surface of the indication module facing the beam combining mirror is set as a second curved surface, the second curved surface is in contact with the first curved surface, and the second curved surface intersects with the first curved surface in a circle; the fixing module is sleeved on the peripheral side of the indication module and is used to lock the indication module.

[0005] In one embodiment, the second channel is arranged with a straight wall, and the beam combining device further comprises a beam combining fixing block, which is detachably inserted into the second channel, and the peripheral side wall of the beam combining fixing block is arranged in close contact with the inner side wall of the second channel, and the beam combining fixing block is provided with a beam combining channel along the length direction of the second channel, and at least part of the side wall surface of the beam combining channel is arranged as a first curved surface, the beam combining mirror covers the light outlet of the beam combining channel and is arranged tilted toward the first channel, and the indication module is inserted into the beam combining channel.

[0006] In one embodiment, the beam combining channel includes a plug-in channel and a light output channel which are connected to each other, the beam combining mirror covers the light output port of the light output channel and is inclined toward the first channel, the cross-sectional size of the light output channel is smaller than the cross-sectional size of the plug-in channel, and the side wall surface at the connection between the plug-in channel and the light output channel is set as a first curved surface.

[0007] In one embodiment, the indication module includes an indication light emitter and an indication light adjustment block, the indication light adjustment block is inserted into the insertion channel, the end face of the indication light adjustment block facing the beam combiner is set as a second curved surface, the second curved surface contacts and abuts against the first curved surface so that the indication light adjustment block can rotate in the insertion channel, the indication light emitter is set in the hollow channel of the indication light adjustment block, and the indication light emitter rotates with the indication light adjustment block to adjust the indication light to coincide with the laser emitted by the laser.

[0008] In one embodiment, the fixing module includes a pressure ring and a fixing ring, the pressure ring is sleeved on the circumference of the second curved surface, the fixing ring is sleeved on the circumference of the indicator light adjustment block and abuts against the pressure ring, and the fixing ring is fixedly connected to the beam combining fixing block.

[0009] In one embodiment, the inner surface of the pressure ring is configured as a third curved surface, and the third curved surface is configured to fit the second curved surface.

[0010] In one embodiment, the outer side wall of the fixing ring is provided with an external thread, and the side wall of the insertion channel is provided with an internal thread matching the external thread. The fixing ring is sleeved on the circumference of the indicator light adjustment block and is tightened with the beam combining fixing block, thereby achieving the fixation of the indicator light adjustment block and the beam combining fixing block.

[0011] In one embodiment, one of the first curved surface and the second curved surface is a conical surface, and the other curved surface is a spherical surface.

[0012] In one embodiment, both the first curved surface and the second curved surface are spherical curved surfaces.

[0013] The utility model also provides a laser device, which includes a machine platform, a laser and the above-mentioned beam combining device, wherein the laser and the beam combining device are both installed on the table of the machine platform.

[0014] The beam combining device sets a first channel and a second channel perpendicular to each other in the base, sets at least part of the side wall surface of the second channel as the first curved surface, sets the end surface of the indicator module as the second curved surface, and then inserts the indicator module into the second channel, so that the second curved surface contacts and abuts the first curved surface, and the second curved surface can fit the first curved surface and rotate relative to it, thereby quickly adjusting the angle of the indicator light by rotating the indicator module, so as to quickly adjust the overlap of the invisible laser beam and the indicator light beam. Compared with the traditional beam combining device that uses an optical adjustment frame for angle adjustment, the beam combining device of the utility model has a simple structure, convenient and quick angle adjustment, and can greatly shorten the adjustment time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 An exploded view of an embodiment of a beam combining device of the utility model;

[0017] Figure 2 It is a cross-sectional view of an embodiment of the beam combining device of the utility model;

[0018] Figure 3 It is a cross-sectional view of another embodiment of the beam combining device of the utility model;

[0019] Figure 4 It is a cross-sectional view of another embodiment of the beam combining device of the utility model;

[0020] Figure 5 This is a state diagram of an embodiment of the beam combining device of the utility model before adjustment;

[0021] Figure 6 This is a state diagram of an embodiment of the beam combining device of the utility model after adjustment.

[0022] Description of Figure Numbers:

[0023] Label name Label name 10 Matrix 225 Connection segment 11 First Channel 30 Indicator module 12 Second channel 31 Indicator light transmitter 21 Beam Combiner 32 Indicator light adjustment block 22 Beam fixing block 321 Second surface 221 First Surface 40 Fixed module 222 Plug channel 41 Retaining ring 223 light channel 42 Pressure ring 224 Bundle section 50 Laser

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] At present, the lasers output by the commonly used carbon dioxide lasers and fiber lasers in the market are mostly invisible lasers. Inaccurate positioning can easily cause accidental injuries to the human body and other safety issues. Therefore, a beam combining device is needed to overlap the invisible laser with the visible indicator light. Common beam combining devices are usually equipped with multiple optical adjustment frames, and the indicator light and the invisible laser are combined by loosening or tightening the screws of each optical adjustment frame. The adjustment process requires delicate operation, which not only requires skilled operating skills, but also takes a long time to adjust.

[0029] To this end, the utility model proposes a beam combining device, which aims to simplify the structure of the beam combining device and reduce the number of parts of the beam combining device, so as to conveniently and quickly adjust the overlap of the indicator light and the invisible laser.

[0030] Reference Figure 1 to Figure 2 The beam combining device of the utility model includes a base body 10, an indication module 30 and a fixing module 40. The base body 10 is provided with a first channel 11 and a second channel 12 which are arranged vertically. The first channel 11 is used to be arranged opposite to the light outlet of the laser 50. At least part of the side wall surface of the second channel 12 is set as a first curved surface. A beam combining mirror is arranged at the intersection of the first channel and the second channel. The indication module 30 is plugged into the second channel 12. The end surface of the indication module 30 facing the beam combining mirror 21 is set as a second curved surface 321. The second curved surface 321 contacts and abuts against the first curved surface 221, and the second curved surface 321 intersects with the first curved surface 221 in a circle. The fixing module 40 is sleeved on the peripheral side of the indication module 30 and is used to lock the indication module 30.

[0031] In the beam combining device, the base 10 is provided with a first channel 11 along the first direction, and a second channel 12 along the second direction, and the first channel 11 and the second channel 12 are arranged perpendicular to each other and connected, and a beam combining mirror 21 is arranged at the intersection of the first channel and the second channel. The first channel is used to be arranged opposite to the light outlet of the laser 50, and the second channel 12 is used to be plugged with the indication module 30. The indication module 30 and the second channel 12 can be plugged in or out, such as in Figure 2 and Figure 4In the embodiment shown, the indicator module 30 is inserted into the second channel 12. Figure 3 In the illustrated embodiment, the indicator module 30 is plugged into the outside of the second channel 12, and can emit visible indicator light toward the beam combiner 21. The mirror surface of the beam combiner 21 is tilted toward the first channel, and the tilt angle is preferably 45°. At this time, the angle between the incident light and the reflected light of the invisible laser is exactly 90°, and the reflected light will be emitted parallel to the second channel 12. Among them, the beam combiner 21 can be a dichroic beam combiner (having different transmission / reflection characteristics for light of different wavelengths), or a polarization beam combiner (laser is naturally linearly polarized light, and the long and short axis directions of the laser output surface can be adjusted by a polarization beam combiner to control the polarization direction of the light, thereby combining light using polarization states, such as transmitting P light and reflecting S light).

[0032] In particular, at least part of the side wall surface of the second channel 12 is set as the first curved surface, and the end surface of the indicator module 30 facing the beam combiner 21 is set as the second curved surface 321. When the indicator module is inserted into the second channel, the second curved surface contacts and abuts against the first curved surface, and the second curved surface 321 intersects with the first curved surface 221 in a circle, that is, the second curved surface can be attached to the first curved surface and rotate relative to it, so that the indicator module 30 can rotate in the second channel 12. For example, in Figure 2 In the embodiment shown, the first curved surface 221 is a conical curved surface, and the second curved surface 321 is a spherical curved surface; Figure 3 In the embodiment shown, the first curved surface 221 is a spherical curved surface, and the second curved surface 321 is a conical curved surface. Figure 4 In the illustrated embodiment, both the first curved surface 221 and the second curved surface 321 are spherical curved surfaces, that is, the connection between the insertion channel 222 and the light outlet channel 223 is set as the spherical first curved surface 221 .

[0033] Reference Figure 5 and Figure 6 When in use, the carbon dioxide laser 50 or the fiber laser 50 emits laser toward the first channel 11 of the base 10. The laser emitted by the laser 50 is reflected by the beam combiner 21 and irradiated onto the receiving plate arranged opposite to the second channel 12 to form a light spot. Then, the indicating module 30 is rotated up and down, left and right, so that the visible indicating light emitted by the indicating module 30 coincides with the light spot on the receiving plate. At this time, the beam of the invisible laser coincides with the beam of the indicating light, and the angle of the indicating module 30 is determined. Then, the fixing module 40 is locked, and the indicating light adjustment block 32 can be locked at a fixed angle.

[0034] In summary, the beam combining device sets a first channel and a second channel perpendicular to each other in the base, sets at least part of the side wall surface of the second channel as the first curved surface, sets the end surface of the indicator module as the second curved surface, and then inserts the indicator module into the second channel, so that the second curved surface contacts and abuts the first curved surface, and the second curved surface can fit the first curved surface to rotate relative to each other, thereby quickly adjusting the angle of the indicator light by rotating the indicator module, thereby quickly adjusting the overlap of the invisible laser beam and the indicator light beam. Compared with the traditional beam combining device that uses an optical adjustment frame for angle adjustment, the beam combining device of the utility model has a simple structure, convenient and quick angle adjustment, and can greatly shorten the adjustment time.

[0035] exist Figure 2 and Figure 4 In the embodiment, the second channel 12 of the base 10 is straight-walled, and the beam combining device also includes a beam combining fixing block 22, which is detachably inserted in the second channel 12, and the peripheral side walls of the beam combining fixing block 22 are fitted with the inner side walls of the second channel 12, and the beam combining fixing block 22 is provided with a beam combining channel along the length direction of the second channel 12, and at least part of the side wall surface of the beam combining channel is provided as a first curved surface 221, and the beam combining mirror 21 covers the light exit port of the beam combining channel and is tilted toward the first channel 11, and the indication module 30 is inserted in the beam combining channel.

[0036] Specifically, a plug-in channel 222 and a light output channel 223 are connected to each other in the beam combining fixing block 22, and the plug-in channel 222 and the light output channel 223 together constitute a beam combining channel. The beam combining mirror 21 covers the light output port of the light output channel 223 and is tilted toward the first channel 11, and the cross-sectional size of the light output channel 223 is smaller than the cross-sectional size of the plug-in channel 222, and the side wall surface at the connection between the plug-in channel 222 and the light output channel 223 is set as the first curved surface 221.

[0037] The indication module 30 includes an indication light emitter 31 and an indication light adjustment block 32. The indication light adjustment block 32 is inserted into the insertion channel 222. The end surface of the indication light adjustment block 32 facing the beam combiner 21 is set as a second curved surface 321. The second curved surface 321 contacts and abuts against the first curved surface 221 so that the indication light adjustment block 32 can rotate in the insertion channel 222. The indication light emitter 31 is set in the hollow channel of the indication light adjustment block 32. The indication light emitter 31 rotates with the indication light adjustment block 32 to adjust the indication light to coincide with the laser light emitted by the laser 50.

[0038] The beam-combining fixing block 22 includes a beam-combining section 224 and a connecting section 225 connected to each other. The cross-sectional area of ​​the connecting section 225 perpendicular to the light-exiting channel 223 is larger than the cross-sectional area of ​​the beam-combining section 224 perpendicular to the light-exiting channel 223. When the beam-combining section 224 and the connecting section 225 are both cylindrical, the diameter of the connecting section 225 is larger than the diameter of the beam-combining section 224. The light-exiting channel 223 is arranged in the beam-combining section 224, the plug-in channel 222 is arranged in the connecting section 225, the beam-combining section 224 is inserted in the second channel 12 of the base 10, and the connecting section 225 is detachably connected to the base 10 through a fastener. When the beam-combining fixing block 22 is assembled with the base 10, the beam-combining section 224 is inserted into the second channel 12 of the base 10, and the end wall of the connecting section 225 abuts against the side wall of the base 10. A corresponding number of connecting holes are provided on the connecting section 225 and the base 10, and then the beam-combining fixing block 22 and the base 10 can be fixed by fasteners such as screws, thereby realizing a detachable connection between the beam-combining fixing block 22 and the base 10.

[0039] In this embodiment, after the indication module 30 and the beam combining mirror 21 are installed on the beam combining fixing block 22 to form a whole, the beam combining fixing block 22 is inserted into the second channel 12. On the one hand, it can simplify the internal structure of the base 10 and reduce the production difficulty of the base 10. On the other hand, it is convenient for the disassembly and assembly of the beam combining mirror 21.

[0040] Reference Figure 1 and Figure 2 The fixing module 40 includes a pressure ring 42 and a fixing ring 41. The pressure ring 42 is sleeved on the circumference of the second curved surface 321. The fixing ring 41 is sleeved on the circumference of the indicator light adjustment block 32 and abuts against the pressure ring 42. The fixing ring 41 is fixedly connected to the beam combining fixing block 22.

[0041] For example, the outer wall of the fixing ring 41 is provided with an external thread, and the side wall of the insertion channel 222 is provided with an internal thread matching the external thread. The fixing ring 41 is sleeved on the circumference of the indicator light adjustment block 32 and is tightened with the beam combining fixing block 22, thereby achieving the fixation of the indicator light adjustment block 32 and the beam combining fixing block 22.

[0042] During the adjustment of the indicator light adjustment block 32, the fixing ring 41 is in a non-locked state, the indicator light adjustment block 32 can rotate freely, and the pressure ring 42 is made of rubber material, so that the pressure ring 42 can be elastically deformed to adapt to the angle adjustment of the indicator light adjustment block 32. After the angle of the indicator light adjustment block 32 is determined, the fixing ring 41 is tightened to fix the indicator module 30 and the beam combining module. Of course, in actual application, the fixing ring 41 can also be locked with the beam combining fixing block 22 by fasteners such as screws or screws.

[0043] Furthermore, the inner surface of the pressing ring 42 is set as a third curved surface, and the third curved surface is set in close contact with the second curved surface 321. That is, the outer surface of the end of the indicator light adjustment block 32 facing the light outlet channel 223 is set as a spherical curved surface, and the inner surface of the pressing ring 42 is also set as a spherical curved surface, and the curvature of the two curved surfaces is consistent, so that the pressing ring 42 can tightly embrace the second curved surface 321 to achieve a tight fit.

[0044] Figure 3 The specific connection method of the indication module 30 in the embodiment can refer to the above technical concept. Based on the technical concept of this application, it is not difficult for those skilled in the art to obtain the structural form and connection method of the indication module 30 and the fixing module 40, which will not be described in detail here.

[0045] The utility model also proposes a laser device, which includes a machine platform, a laser 50 and a beam combining device. The specific structure of the beam combining device refers to the above embodiment. Since the laser device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the laser 50 and the beam combining device are both installed on the table of the machine platform.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A beam combining device, characterized in that: include: A substrate, wherein a first channel and a second channel are vertically arranged on the substrate, the first channel is used to be arranged opposite to the light outlet of the laser, at least a part of the side wall surface of the second channel is arranged as a first curved surface, and a beam combiner is arranged at the intersection of the first channel and the second channel; An indication module, the indication module is plugged into the second channel, an end surface of the indication module facing the beam combiner is set as a second curved surface, the second curved surface is in contact with the first curved surface, and the second curved surface intersects with the first curved surface in a circle; A fixing module is sleeved on the peripheral side of the indicating module and is used to lock the indicating module.

2. The beam combining device according to claim 1, characterized in that: The second channel is arranged with a straight wall, and the beam combining device also includes a beam combining fixing block, which is detachably inserted in the second channel, and the peripheral side wall of the beam combining fixing block is arranged in close contact with the inner side wall of the second channel, and the beam combining fixing block is provided with a beam combining channel along the length direction of the second channel, and at least part of the side wall surface of the beam combining channel is arranged as a first curved surface, the beam combining mirror covers the light outlet of the beam combining channel and is arranged tilted toward the first channel, and the indication module is inserted in the beam combining channel.

3. The beam combining device according to claim 2, characterized in that: The beam combining channel includes a plug-in channel and a light output channel which are connected to each other. The beam combining mirror covers the light output port of the light output channel and is tilted toward the first channel. The cross-sectional size of the light output channel is smaller than the cross-sectional size of the plug-in channel. The side wall surface at the connection between the plug-in channel and the light output channel is set to a first curved surface.

4. The beam combining device according to claim 3, characterized in that: The indication module includes an indication light emitter and an indication light adjustment block, the indication light adjustment block is plugged into the insertion channel, the end face of the indication light adjustment block facing the beam combiner is set as a second curved surface, the second curved surface contacts and abuts against the first curved surface so that the indication light adjustment block can rotate in the insertion channel, the indication light emitter is set in the hollow channel of the indication light adjustment block, the indication light emitter rotates with the indication light adjustment block to adjust the indication light to coincide with the laser emitted by the laser.

5. The beam combining device according to claim 4, characterized in that: The fixing module comprises: A pressure ring, the pressure ring is sleeved on the peripheral side of the second curved surface; A fixing ring is sleeved on the peripheral side of the indicator light adjustment block and abuts against the pressure ring, and the fixing ring is fixedly connected to the beam combining fixing block.

6. The beam combining device according to claim 5, characterized in that: The inner surface of the pressure ring is arranged as a third curved surface, and the third curved surface is arranged to fit the second curved surface.

7. The beam combining device according to claim 5, characterized in that: The outer side wall of the fixing ring is provided with an external thread, and the side wall of the insertion channel is provided with an internal thread matching the external thread. The fixing ring is sleeved on the circumference of the indicator light adjustment block and is tightened with the beam combining fixing block, thereby achieving the fixation of the indicator light adjustment block and the beam combining fixing block.

8. The beam combining device according to claim 1 or 2, characterized in that: One of the first curved surface and the second curved surface is a conical curved surface, and the other curved surface is a spherical curved surface.

9. The beam combining device according to claim 1 or 2, characterized in that: The first curved surface and the second curved surface are both spherical curved surfaces.

10. A laser device, characterized in that: It comprises a machine platform, a laser and a beam combining device as claimed in any one of claims 1 to 9, wherein the laser and the beam combining device are both installed on the table of the machine platform.

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