Laser device, laser processing equipment and lens testing equipment

Abstract

The utility model discloses a laser device, laser processing equipment and lens testing equipment, the laser device comprises a laser emitter, a plurality of laser heads and a light path switching mechanism, main incident light emitted by the laser emitter can be emitted into a certain laser head through the light path switching mechanism, or the main incident light is emitted into the plurality of laser heads after being subjected to light splitting, in this way, a large machining breadth can be obtained, meanwhile, a plurality of laser heads can conduct synchronous machining, the machining efficiency is guaranteed, and the cost is lower when a single laser transmitter is used. Certainly, a beam expander is arranged in the laser head, so that the beam diameter of laser can be changed, and laser spots with different sizes can be obtained.

Description

Technical Field

[0001] The present application relates to the field of laser equipment, and in particular to a laser device, laser processing equipment and lens testing equipment. Background Art

[0002] At present, laser intelligent processing equipment pays more and more attention to the requirements of equipment cost, equipment space size, equipment processing efficiency, equipment stability, etc. In particular, in some laser marking machines, laser engraving machines, and 3D laser printing equipment, there is often a demand for larger processing formats. In the related technology, multiple laser emitters and multiple galvanometers are generally used, and the two are configured one-to-one, and the multiple processing formats obtained are spliced ​​together to obtain a larger processing format. This one-to-one configuration of galvanometer lenses and laser emitters will result in higher equipment costs. Utility Model Content

[0003] The present application proposes a laser device, laser processing equipment and lens testing equipment, aiming to solve the problem of high cost of current large-format laser equipment.

[0004] The present application proposes a laser device, comprising

[0005] A laser transmitter, used for generating a main incident light;

[0006] A plurality of laser heads, each of which includes a galvanometer and a beam expander;

[0007] An optical path switching mechanism, used to allow the main incident light to enter any of the laser heads;

[0008] Alternatively, the optical path switching mechanism is further used to split the main incident light to form at least two secondary incident lights, and to allow at least one of the secondary incident lights to be emitted into the laser head;

[0009] The beam expander is located between the optical path switching mechanism and the galvanometer, and is used to adjust the diameter of the laser beam.

[0010] In some embodiments, the galvanometer includes an emitting end, and the laser device further includes a mounting portion disposed at the emitting end, wherein the mounting portion is used to mount a focusing mirror.

[0011] In some embodiments, the laser heads are arranged side by side, and the optical path switching mechanism includes reflective elements arranged one-to-one with the laser heads, and a flip motor driven and connected to the reflective elements; the reflective elements are arranged along a first direction, and the flip motor is used to drive the reflective elements to rotate to reflect the main incident light or avoid the main incident light.

[0012] In some embodiments, the reflective element includes a beam splitter, which is used to split the primary incident light and form the secondary incident light; the secondary incident light can be respectively emitted into the laser head and another reflective element.

[0013] In some embodiments, the laser device further comprises:

[0014] A mounting base, used for mounting the laser transmitter;

[0015] A first refractive cavity, disposed on the mounting seat, one end of which is connected to the laser emitter;

[0016] A spectroscopic cavity is provided on the mounting base and is located on one side of the laser emitter, wherein the spectroscopic cavity is connected to an end of the first refractive cavity away from the laser emitter;

[0017] The reflective element is arranged in the light splitting cavity.

[0018] In some embodiments, the laser device further comprises an adjusting member disposed on the mounting seat, and the adjusting member is used to adjust a mounting angle of the mounting seat.

[0019] In some embodiments, the laser beam passes through the optical path switching mechanism, the beam expander and the galvanometer in sequence to form a secondary optical path. The laser device also includes a preview component, which includes a beam combiner provided in the secondary optical path and a preview light emitter provided on one side of the beam combiner. The beam combiner is used to combine the preview light with the laser in the secondary optical path.

[0020] In some embodiments, the laser device includes three laser heads.

[0021] The present application also proposes a laser processing device, which includes the above-mentioned laser device and a driving mechanism connected to the laser device.

[0022] The present application also proposes a lens testing device, which includes the above-mentioned laser device and a frame for installing the laser device.

[0023] The laser device in this application includes a laser transmitter, multiple laser heads and an optical path switching mechanism. The main incident light emitted by the laser transmitter can be emitted into a certain laser head through the optical path switching mechanism, or emitted into multiple laser heads after being split, so that a larger processing area can be obtained, and multiple laser heads can be processed synchronously, the processing efficiency is also guaranteed, and the cost of using a single laser transmitter is also lower. Of course, a beam expander is configured in the laser head to change the laser beam diameter to obtain laser spots of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a schematic diagram of the structure of a laser device in one embodiment of the present application;

[0025] Figure 2 for Figure 1 Schematic diagram of the optical path structure of the laser device in the embodiment;

[0026] Figure 3 for Figure 1 A schematic structural diagram of the laser device from another perspective in the embodiment.

[0027] Description of labels:

[0028] 10. Mounting seat; 11. Laser emitter; 12. First refractive cavity; 13. Spectral cavity; 14. Second refractive cavity; 15. Adjustment member; 20. Optical path switching mechanism; 21. Reflective element; 22. Flip motor; 23. Reflector; 31. Vibrating mirror; 32. Beam expander; 33. Mounting part; 40. Focusing mirror; 50. Preview assembly; 51. Preview light emitter; 52. Beam combiner.

[0029] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the scheme in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments in 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.

[0031] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] In addition, the descriptions of "first", "second", etc. in this application are only 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 combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] This application proposes a laser device, referring to Figures 1 to 3 The laser device includes: a laser emitter 11, which is used to generate a main incident light; a plurality of laser heads, each of which includes a galvanometer 31 and a beam expander 32; an optical path switching mechanism 20, which is used to allow the main incident light to enter any laser head; or, the optical path switching mechanism 20 is also used to split the main incident light to form at least two secondary incident lights, and allow at least one secondary incident light to enter the laser head; the beam expander 32 is located between the optical path switching mechanism 20 and the galvanometer 31, and is used to adjust the diameter of the laser beam.

[0035] The laser device in the present application includes a laser emitter 11, multiple laser heads and an optical path switching mechanism 20. The main incident light emitted by the laser emitter 11 can be emitted into a certain laser head through the optical path switching mechanism 20, or emitted into multiple laser heads after being split, so that a larger processing format can be obtained, and multiple laser heads can be processed synchronously, the processing efficiency is also guaranteed, and the cost of using a single laser emitter 11 is also lower. Of course, a beam expander 32 is configured in the laser head to change the beam diameter of the laser to obtain laser spots of different sizes.

[0036] In some embodiments, reference Figures 1 to 3 , the galvanometer 31 includes an emission end, and the laser device also includes a mounting portion 33 disposed at the emission end, and the mounting portion 33 is used to mount the focusing lens 40. In this embodiment, the mounting portion 33 can be a snap-on lens interface or a threaded screwing interface. Mounting portions 33 of different calibers can be respectively provided on multiple galvanometers 31 to adapt to different focusing lenses 40 heads, so as to test the lens and avoid frequent replacement of mechanical and optical structures such as the beam expander 32 and the galvanometer 31 during testing.

[0037] In some embodiments, reference Figures 1 to 3, the laser heads are arranged side by side, the optical path switching mechanism 20 includes a reflective element 21 arranged one by one with the laser heads, and a flip motor 22 connected to the reflective element 21; the reflective element 21 is arranged along the first direction, and the flip motor 22 is used to drive the reflective element 21 to rotate to reflect the main incident light, or avoid the main incident light. In this embodiment, the optical path switching mechanism 20 also includes a limiter for limiting the rotation angle of the reflective element 21, and the limiter can reduce the angle error of the reflective element 21 under the drive of the motor. The reflective element 21 can be a reflector, and the reflector in the first posture can be used to reflect the main incident light and allow the main incident light to enter the laser head. When the reflector is driven by the motor and is in the second posture, the main incident light can be avoided. When any laser head needs to be marked, the reflector corresponding to the laser head is in the first posture, and the other reflectors located at the front end of the optical path are in the second posture to avoid blocking the main incident light.

[0038] In some embodiments, reference Figures 1 to 3 , the reflective element 21 includes a beam splitter, which is used to split the main incident light and form secondary incident light; the secondary incident light can be respectively emitted into the laser head and another reflective element 21. In this embodiment, the reflective element 21 can be provided with a beam splitter, which can not only reflect light but also transmit laser light to achieve the effect of beam splitting. The split laser can be directly emitted into the laser head, or it can be split multiple times so that each laser head can be emitted with laser light, or multiple laser heads can be emitted with laser light for synchronous processing.

[0039] In some embodiments, reference Figures 1 to 3The laser device further includes: a mounting seat 10 for mounting a laser emitter 11; a first refractive cavity 12, which is disposed on the mounting seat 10 and connected to the laser emitter at one end; a splitting cavity 13, which is disposed on the mounting seat 10 and located on one side of the laser emitter 11, and the splitting cavity 13 is connected to one end of the first refractive cavity 12 away from the laser emitter 11; and a reflective element 21 is disposed in the splitting cavity 13. In this embodiment, three laser heads can be disposed on one side of the mounting seat 10, and the laser emitter 11, the splitting cavity 13 and the galvanometer 31 are disposed side by side along the first direction, and a plurality of galvanometers 31 are disposed side by side along the second direction. The first refractive cavity 12 is disposed to make the main incident light turn 180 degrees and enter the splitting cavity 13. The main incident light is reflected and / or split by the reflective element 21, and then enters the laser head. The arrangement of the splitting cavity 13 and the first refractive cavity 12 makes the arrangement of the components in the laser device more compact, and at the same time seals and protects the laser optical path. It is worth noting that when the laser beam hits the reflective element 21 at the tail end, there is no need to continue splitting the beam and there is no need to avoid it. The reflective element 21 can be set as a reflector 23, and there is no need to set a flip motor 22. Among the three laser heads, at least two of the beam expanders have different beam expansion ratios, so the diameters of the laser beams emitted from different laser heads are different. Of course, the beam expansion ratios of the three beam expanders can also be different. At the same time, three different types of galvanometers and focusing mirrors are used to obtain light spots of different sizes, which can be used by lens manufacturers to test lenses, avoiding frequent replacement of mechanical and optical structures such as beam expanders and galvanometers during testing.

[0040] In some embodiments, reference Figures 1 to 3 The laser device further includes an adjustment member 15 disposed on the mounting seat 10, and the adjustment member 15 is used to adjust the mounting angle of the mounting seat 10. In this embodiment, one side of the mounting seat 10 can be mounted with optical components of the laser device, and the other side can be mounted on the machine platform of the laser device. The adjustment member 15 can be an adjustment screw disposed on the mounting seat 10, and the parallelism between the mounting seat 10 and the machine platform can be adjusted by adjusting the extension length of the adjustment screw to ensure that the marking plane is parallel to the table surface of the machine platform. Avoid the occurrence of defocus and ghosting during marking.

[0041] In some embodiments, reference Figures 1 to 3 The laser device also includes a second refractive cavity 14 arranged on one side of the spectroscopic cavity 13 close to the galvanometer 31. Due to the size limitation of the galvanometer 31, the incident end of the galvanometer 31 and the reflective element 21 cannot correspond one to one in the first direction. By setting the second refractive cavity 14, the secondary incident light is offset by a certain distance in the second direction so as to be incident on the incident end of the galvanometer 31.

[0042] Furthermore, the laser beam passes through the optical path switching mechanism 20, the beam expander 32 and the galvanometer 31 in sequence to form a secondary optical path. The laser device also includes a preview component 50, which includes a beam combiner 52 disposed in the secondary optical path, and a preview light emitter 51 disposed on one side of the beam combiner 52. The beam combiner 52 is used to combine the preview light with the laser in the secondary optical path. The preview component 50 in this embodiment can be arranged between the beam expander 32 and the second refractive cavity 14, or between the beam expander 32 and the galvanometer 31. The laser can directly pass through the beam combiner 52, and the preview light beam is combined with the laser after being reflected by the beam combiner 52. The preview light emitter 51 can emit a red light beam, and the preview light can be used for auxiliary positioning before the laser emitter 11 is turned on.

[0043] This application also proposes a laser processing device, referring to Figures 1 to 3 , which includes the above-mentioned laser device and a driving mechanism connected to the laser device. In this embodiment, the driving mechanism can be an articulated manipulator or an orthogonal manipulator, and the mounting seat 10 can be set at the free end of the driving mechanism to achieve laser processing in a wider range. It is worth noting that the above-mentioned laser processing equipment is not limited to laser marking applications, but can also be used in 3D laser printing, laser laser engraving and other processes.

[0044] The present application also proposes a lens testing device, referring to Figures 1 to 3 , which includes the above-mentioned laser device and a frame for mounting the laser device. In this embodiment, the laser head test equipment is mainly used to test the focusing lens 40. When the manufacturer performs lens testing, mounting parts 33 of different calibers can be respectively provided on multiple galvanometer mirrors 31 to adapt to different focusing lenses 40 heads, so as to avoid frequent replacement of mechanical and optical structures such as the beam expander 32 and the galvanometer mirror 31 during testing.

[0045] Working principle of the laser device in this application:

[0046] The laser device in the present application includes a laser emitter 11, multiple laser heads and an optical path switching mechanism 20. The main incident light emitted by the laser emitter 11 can be emitted into a certain laser head through the optical path switching mechanism 20, or emitted into multiple laser heads after being split, so that a larger processing format can be obtained, and multiple laser heads can be processed synchronously, the processing efficiency is also guaranteed, and the cost of using a single laser emitter 11 is also lower. Of course, a beam expander 32 is configured in the laser head to change the beam diameter of the laser to obtain laser spots of different sizes.

[0047] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A laser device, characterized in that: include: A laser transmitter, used for generating a main incident light; A plurality of laser heads, each of which includes a galvanometer and a beam expander; An optical path switching mechanism, used to allow the main incident light to enter any of the laser heads; Alternatively, the optical path switching mechanism is further used to split the main incident light to form at least two secondary incident lights, and to allow at least one of the secondary incident lights to be emitted into the laser head; The beam expander is located between the optical path switching mechanism and the galvanometer, and is used to adjust the diameter of the laser beam.

2. The laser device according to claim 1, characterized in that The galvanometer includes an emission end, and the laser device also includes a mounting portion arranged at the emission end, and the mounting portion is used to mount a focusing mirror.

3. The laser device according to claim 1, characterized in that The laser heads are arranged side by side, and the optical path switching mechanism includes reflective elements arranged in a one-to-one correspondence with the laser heads, and a flip motor driven and connected to the reflective elements; the reflective elements are arranged along a first direction, and the flip motor is used to drive the reflective elements to rotate to reflect the main incident light or avoid the main incident light.

4. The laser device according to claim 3, characterized in that The reflective element comprises a beam splitter, which is used to split the main incident light and form the secondary incident light; the secondary incident light can be respectively incident on the laser head and another reflective element.

5. The laser device according to claim 3, characterized in that: The laser device also includes: A mounting base, used for mounting the laser transmitter; A first refractive cavity, disposed on the mounting seat, one end of which is connected to the laser emitter; A spectroscopic cavity is provided on the mounting base and is located on one side of the laser emitter, wherein the spectroscopic cavity is connected to an end of the first refractive cavity away from the laser emitter; The reflective element is arranged in the light splitting cavity.

6. The laser device according to claim 5, characterized in that The laser device further comprises an adjusting member arranged on the mounting seat, and the adjusting member is used for adjusting the mounting angle of the mounting seat.

7. The laser device according to claim 5, characterized in that The laser beam passes through the optical path switching mechanism, the beam expander and the galvanometer in sequence to form a secondary optical path. The laser device also includes a preview component, which includes a beam combiner provided in the secondary optical path and a preview light emitter provided on one side of the beam combiner. The beam combiner is used to combine the preview light with the laser in the secondary optical path.

8. The laser device according to any one of claims 1 to 7, characterized in that: The laser device comprises three laser heads.

9. A laser processing device, characterized in that: The invention comprises the laser device according to any one of claims 1 to 8 and a driving mechanism connected to the laser device.

10. A lens testing device, characterized in that: The invention comprises the laser device according to any one of claims 1 to 8 and a frame for mounting the laser device.

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